From 31b3162d2039b3ff5f00f549b13afe4403bc6681 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Tue, 25 Aug 2026 06:45:30 +0100 Subject: [PATCH 01/33] D15: replace yarn with pnpm 11 Signed-off-by: Prabhu Subramanian --- .github/workflows/ci.yml | 29 +- README.md | 57 +- docs/install.md | 177 ++++ package.json | 8 +- pnpm-lock.yaml | 1436 ++++++++++++++++++++++++++++++++ pnpm-workspace.yaml | 25 + tools/BinaryBuilder.Dockerfile | 16 +- 7 files changed, 1717 insertions(+), 31 deletions(-) create mode 100644 docs/install.md create mode 100644 pnpm-lock.yaml create mode 100644 pnpm-workspace.yaml diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 3594a34..aded3d8 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -45,13 +45,25 @@ jobs: name: ${{ matrix.os }} (host=${{ matrix.host }}, target=${{ matrix.target }}) steps: - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + - name: Setup pnpm + uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 + # Reads the version from the packageManager field in package.json. - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 with: node-version: ${{ matrix.node }} architecture: ${{ matrix.host }} scope: '@appthreat' - - name: Add yarn - run: npm install -g yarn + - name: Get pnpm store directory + shell: bash + run: | + echo "PNPM_STORE_PATH=$(pnpm store path)" >> $GITHUB_ENV + - name: Cache pnpm store + uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0 + with: + path: ${{ env.PNPM_STORE_PATH }} + key: pnpm-store-${{ runner.os }}-${{ matrix.host }}-${{ hashFiles('pnpm-lock.yaml') }} + restore-keys: | + pnpm-store-${{ runner.os }}-${{ matrix.host }}- - name: Set up Python uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0 with: @@ -62,7 +74,7 @@ jobs: with: msbuild-architecture: ${{ matrix.target }} - name: Install dependencies - run: yarn install --ignore-scripts + run: pnpm install --frozen-lockfile --ignore-scripts - name: Check Node compatibility run: node tools/semver-check.js @@ -85,7 +97,7 @@ jobs: echo "CXXFLAGS=${CXXFLAGS:-} -include ../src/gcc-preinclude.h" >> $GITHUB_ENV - name: Build binaries - run: yarn prebuild --arch ${{ env.TARGET }} --tag-libc + run: pnpm run prebuild --arch ${{ env.TARGET }} --tag-libc - name: Print binary info if: contains(matrix.os, 'ubuntu') @@ -97,7 +109,7 @@ jobs: file prebuilds/*/*.node - name: Run tests - run: yarn test + run: pnpm run test - name: Upload prebuilds to artifacts uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0 @@ -178,12 +190,13 @@ jobs: path: prebuilds/ merge-multiple: true - - name: Add yarn - run: npm install -g yarn + - name: Setup pnpm + uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 + # Reads the version from the packageManager field in package.json. - name: Install dependencies run: | - yarn install --ignore-scripts + pnpm install --frozen-lockfile --ignore-scripts npm publish --dry-run - name: Publish to npm diff --git a/README.md b/README.md index 5671b3e..c4f192e 100644 --- a/README.md +++ b/README.md @@ -19,38 +19,46 @@ Asynchronous, non-blocking [SQLite3](https://sqlite.org/) bindings for [Node.js] # Installing -You can use [`npm`](https://github.com/npm/cli) or [`yarn`](https://github.com/yarnpkg/yarn) to install `sqlite3`: - -- (recommended) Latest published package: +Use whichever package manager you like: ```bash npm install @appthreat/sqlite3 # or +pnpm add @appthreat/sqlite3 +# or yarn add @appthreat/sqlite3 +# or +bun add @appthreat/sqlite3 ``` - GitHub's `master` branch: `npm install https://github.com/AppThreat/node-sqlite3/tarball/master` -### Prebuilt binaries +Requires Node.js >= 24. See [docs/install.md](docs/install.md) for the full +installation guide: prebuild coverage, source builds, custom SQLite/SQLCipher, +and troubleshooting. -`@appthreat/sqlite3` v6+ was rewritten to use [Node-API](https://nodejs.org/api/n-api.html) so prebuilt binaries do not need to be built for specific Node versions. `sqlite3` currently builds for both Node-API v3 and v6. Check the [Node-API version matrix](https://nodejs.org/api/n-api.html#node-api-version-matrix) to ensure your Node version supports one of these. The prebuilt binaries should be supported on Node v10+. +### Prebuilt binaries -The module uses [`prebuild-install`](https://github.com/prebuild/prebuild-install) to download the prebuilt binary for your platform, if it exists. These binaries are hosted on GitHub Releases for `sqlite3` versions above 5.0.2, and they are hosted on S3 otherwise. The following targets are currently provided: +`@appthreat/sqlite3` v6+ was rewritten to use [Node-API](https://nodejs.org/api/n-api.html), so a single prebuilt binary per platform covers every supported Node version — nothing is compiled or downloaded at install time for the platforms below: - `darwin-arm64` - `darwin-x64` -- `linux-arm64` -- `linux-x64` -- `linuxmusl-arm64` -- `linuxmusl-x64` -- `win32-ia32` +- `linux-arm64` (glibc and musl) +- `linux-x64` (glibc and musl) +- `win32-arm64` - `win32-x64` -Unfortunately, [prebuild](https://github.com/prebuild/prebuild/issues/174) cannot differentiate between `armv6` and `armv7`, and instead uses `arm` as the `{arch}`. Until that is fixed, you will still need to install `sqlite3` from [source](#source-install). - -Support for other platforms and architectures may be added in the future if CI supports building on them. +The prebuilds are bundled **inside the npm tarball** and resolved at +**runtime**, not by an install script. In particular, **pnpm 10+ users need no +`onlyBuiltDependencies` allowlist**: pnpm blocks dependencies' install scripts +by default, and that block is a no-op here because `lib/sqlite3-binding.js` +locates the prebuild itself when the module is first imported. -If your environment isn't supported, it'll use `node-gyp` to build SQLite, but you will need to install a C++ compiler and linker. +Support for other platforms and architectures may be added in the future if CI +supports building on them. Everywhere else, `@appthreat/sqlite3` builds from +source via `node-gyp` — see +[docs/install.md](docs/install.md#source-builds) for the toolchain +requirements and the pnpm specifics for source builds. ### Other ways to install @@ -258,9 +266,26 @@ npm install sqlite3 --build-from-source --sqlite_libname=sqlcipher --sqlite=`bre # Testing ```bash -npm test +pnpm run test ``` +# Developing + +Development of this repo itself requires **pnpm >= 11** (`corepack enable`, or a +standalone install). Clone, then: + +```bash +pnpm install # also builds the native binding via the install script +pnpm run rebuild # recompile after changing C++ (node-gyp rebuild) +pnpm run test +pnpm run prebuild # produce the shipping prebuilds/ artifacts +``` + +Always use `pnpm run rebuild`, never bare `pnpm rebuild` — the latter is a +pnpm builtin that rebuilds *dependencies*, not this repo's `rebuild` script. +See [docs/install.md](docs/install.md#development) for the full guide, +including the stale-`prebuilds/` trap when iterating on C++. + # Contributors - [Daniel Lockyer](https://github.com/daniellockyer) diff --git a/docs/install.md b/docs/install.md new file mode 100644 index 0000000..7afc456 --- /dev/null +++ b/docs/install.md @@ -0,0 +1,177 @@ +# Installing @appthreat/sqlite3 + +This is the complete installation guide. Requirements: **Node.js >= 24** +(declared in `engines`). Any package manager works: + +```bash +npm install @appthreat/sqlite3 +pnpm add @appthreat/sqlite3 +yarn add @appthreat/sqlite3 +bun add @appthreat/sqlite3 +``` + +Nothing is downloaded at install time and nothing is compiled at install time +on the platforms below — the prebuilt binaries ship inside the npm tarball +itself. + +## Prebuild coverage + +One binary per platform, built against Node-API (`napi_versions: [10]`), so a +single binary covers every supported Node version. Linux builds carry both +libc flavours side by side, tagged `.glibc.node` / `.musl.node`. + +| Platform | Files in `prebuilds/` | +|----------|----------------------------------------| +| `darwin-arm64` | `@appthreat+sqlite3.node` | +| `darwin-x64` | `@appthreat+sqlite3.node` | +| `linux-arm64` | `@appthreat+sqlite3.glibc.node`, `@appthreat+sqlite3.musl.node` | +| `linux-x64` | `@appthreat+sqlite3.glibc.node`, `@appthreat+sqlite3.musl.node` | +| `win32-arm64` | `@appthreat+sqlite3.node` | +| `win32-x64` | `@appthreat+sqlite3.node` | + +The binding is resolved at **runtime**, not install time: +`lib/sqlite3-binding.js` calls `node-gyp-build(rootDir)` on first import, +which looks in `prebuilds//` first, then falls back to a +`build/Release/` build. (For `--tag-libc` builds the directory stays +`linux-` and the libc is carried by the file suffix.) + +## pnpm 10+ and the blocked install script + +pnpm 10 and later refuse to run a dependency's lifecycle scripts unless the +dependent allowlists it. This package declares `"install": "node-gyp-build"`, +so pnpm prints a notice like: + +``` +[ERR_PNPM_IGNORED_BUILDS] Ignored build scripts: @appthreat/sqlite3@9.0.0 +``` + +**You can ignore that notice.** Verified empirically (pnpm 11.23.0, macOS, +both the published v8 and a packed v9 tarball): with the script blocked, the +module still imports and `sqlite3.VERSION` prints, because a matching prebuild +exists and runtime resolution never needs the install script. + +**No `onlyBuiltDependencies` entry is needed** — we ship prebuilds. + +The one case where you *do* need to allow the script is a **source build**: +no prebuild for your platform, or `--build-from-source`, `--sqlite=`, +SQLCipher, or a custom runtime (Electron / node-webkit). Then the install +script must actually run `node-gyp`. Add to your `pnpm-workspace.yaml`: + +```yaml +onlyBuiltDependencies: + - '@appthreat/sqlite3' +``` + +(or run `pnpm approve-builds` and select `@appthreat/sqlite3`), then trigger +the source build, e.g.: + +```bash +npm_config_build_from_source=true pnpm rebuild @appthreat/sqlite3 +``` + +`pnpm rebuild ` (the builtin, with the package named explicitly — here it +is the right tool) re-runs that dependency's build scripts, which invokes +`node-gyp-build`, which sees the `build_from_source` config and compiles +instead of resolving a prebuild. + +## Source builds + +A source build happens when: + +- your platform has no prebuild in the table above; +- you pass `--build-from-source`; +- you build against an external SQLite or SQLCipher (`--sqlite=`, + `--sqlite_libname=`); +- you set a custom file magic (`--sqlite_magic=`); or +- you target a non-Node runtime ABI (node-webkit; Electron with a custom + `--target`). + +Toolchain requirements: + +- **Python 3** (for node-gyp's gyp) +- a **C++17 toolchain**: Xcode CLT on macOS, MSVC (msbuild) on Windows, + gcc/clang elsewhere +- **node-gyp 12.x** — installed automatically as an `optionalDependencies` + entry when your environment needs it; no global install required + +With npm everything works with the classic flags: + +```bash +npm install @appthreat/sqlite3 --build-from-source +``` + +With pnpm, allow the script as shown above and set the config via the +environment (`npm_config_build_from_source=true`), since pnpm does not forward +npm-style `--` flags to dependency scripts. + +### External SQLite, magic, SQLCipher + +```bash +# external sqlite instead of the bundled amalgamation +npm install @appthreat/sqlite3 --build-from-source --sqlite=/usr/local + +# homebrew sqlite on macOS +npm install @appthreat/sqlite3 --build-from-source --sqlite=/usr/local/opt/sqlite/ + +# custom 15-char file magic +npm install @appthreat/sqlite3 --build-from-source --sqlite_magic="MyCustomMagic15" + +# SQLCipher +npm install @appthreat/sqlite3 --build-from-source --sqlite_libname=sqlcipher --sqlite=/usr/ +``` + +For the full SQLCipher/Electron flag set see the +[README](../README.md#building-for-sqlcipher). + +## Troubleshooting: "No native build was found" + +``` +Error: No native build was found for platform=linux arch=arm64 runtime=node ... +``` + +`node-gyp-build` found neither a matching `prebuilds//` entry nor a +`build/Release/` binding. In order of likelihood: + +1. **pnpm blocked the install script on a platform that needs a source + build.** You saw the `ERR_PNPM_IGNORED_BUILDS` notice and ignored it, but + there is no prebuild for your platform. Add the + `onlyBuiltDependencies` snippet from above, then + `pnpm rebuild @appthreat/sqlite3`. +2. **You are developing this repo** and have no build yet: run + `pnpm install` (the root install script compiles the binding) or + `pnpm run rebuild`. +3. **Stale `prebuilds/` while iterating on C++**: `node-gyp-build` prefers + `prebuilds/` over `build/`, so your `pnpm run rebuild` output is being + shadowed. Delete `prebuilds/` while iterating. +4. **Wrong ABI for the embedding runtime** (Electron, node-webkit): rebuild + from source with `--runtime=electron --target= + --dist-url=https://electronjs.org/headers` (or `nw-gyp` for node-webkit). + A binary built for Node cannot load in node-webkit and vice versa. + +## Development + +This repo is developed with **pnpm >= 11** (pinned exactly in +`packageManager`; `corepack enable` picks it up). Node >= 24 required. + +```bash +pnpm install # strictDepBuilds is on; frozen form: pnpm install --frozen-lockfile +pnpm run rebuild # node-gyp rebuild — always `pnpm run rebuild` +pnpm run test +pnpm run prebuild # prebuildify --napi --strip +pnpm pack # tarball includes prebuilds/ — smoke-test it in a scratch project +``` + +Notes: + +- **Never bare `pnpm rebuild`** in this repo — that is pnpm's builtin for + rebuilding *dependencies*; it silently does not run this repo's `rebuild` + script. The same class of collision is why CI and docs use + `pnpm run . - - \ No newline at end of file diff --git a/test/nw/package.json b/test/nw/package.json deleted file mode 100644 index d1b4aee..0000000 --- a/test/nw/package.json +++ /dev/null @@ -1,9 +0,0 @@ -{ - "name": "nw-demo", - "main": "index.html", - "window": { - "toolbar": false, - "width": 800, - "height": 600 - } -} \ No newline at end of file diff --git a/test/support/createdb-electron.js b/test/support/createdb-electron.js deleted file mode 100644 index 373b34d..0000000 --- a/test/support/createdb-electron.js +++ /dev/null @@ -1,9 +0,0 @@ -import { app } from 'electron'; - -import createdb from './createdb.js'; - -createdb(function () { - setTimeout(function () { - app.quit(); - }, 20000); -}); diff --git a/test/throwing_completion.test.js b/test/throwing_completion.test.js new file mode 100644 index 0000000..78a5ece --- /dev/null +++ b/test/throwing_completion.test.js @@ -0,0 +1,169 @@ +import assert from 'node:assert'; +import { describe, it } from 'node:test'; + +import sqlite3 from '../lib/sqlite3.js'; + +// A throwing completion callback on a database-level exclusive operation +// (open/exec/close/loadExtension) must not wedge the connection. The +// completions end by draining the database queue (Process()); the JS +// callback fires first, and when it throws TRY_CATCH_CALL returns early — +// so the drain must run from a guard (Database::ProcessGuard, the same +// discipline as Statement::CallGuard). Without it, everything queued +// behind the exclusive call stays queued forever and every later call on +// the connection never settles. +// +// The pending exception from the throwing callback surfaces as an +// uncaughtException at the next tick boundary, so each test follows the +// test/sync.test.js "sync fast path after a throwing callback" pattern: +// detach node:test's uncaught handlers, capture the throw, assert the +// connection stayed live, restore the handlers. +function withCapturedThrow(message, run) { + return new Promise((resolve, reject) => { + const savedHandlers = process.listeners('uncaughtException'); + process.removeAllListeners('uncaughtException'); + + let restored = false; + const restore = () => { + if (restored) return; + restored = true; + process.removeAllListeners('uncaughtException'); + for (const h of savedHandlers) process.on('uncaughtException', h); + }; + + process.once('uncaughtException', (err) => { + if (!(err instanceof Error) || err.message !== message) { + restore(); + return reject( + new Error(`unexpected uncaught exception: ${err?.message}`), + ); + } + // Give the drained queue a moment: the work queued behind the + // exclusive call needs a worker round trip to settle. + setTimeout(() => { + restore(); + resolve(); + }, 150); + }); + + run().catch((err) => { + restore(); + reject(err); + }); + }); +} + +describe('throwing completion callbacks', () => { + it('exec: a throwing completion callback does not wedge the connection', (_t, done) => { + const db = new sqlite3.Database(':memory:'); + let settled = false; + + withCapturedThrow('boom from exec', async () => { + // Queued behind the exec: this is what the guard must + // dispatch when the exec completion callback throws. + db.exec('CREATE TABLE t (i)', () => { + throw new Error('boom from exec'); + }); + db.get('SELECT COUNT(*) AS n FROM sqlite_master', (err, row) => { + // n === 1: the table the exec created — proves both that + // the exec ran and that this query settled. + if (!err) settled = row && row.n === 1; + }); + }) + .then(() => { + assert.strictEqual( + settled, + true, + 'the query queued behind the throwing exec never settled', + ); + db.close(done); + }) + .catch((err) => done(err)); + }); + + it('loadExtension: a throwing completion callback does not wedge the connection', (_t, done) => { + const db = new sqlite3.Database(':memory:', (err) => { + assert.ifError(err); + let settled = false; + + withCapturedThrow('boom from loadExtension', async () => { + // The load fails (no such file) and the error branch + // fires the throwing callback — the same TRY_CATCH_CALL + // early return as the success path. + db.loadExtension('/nonexistent/ext.dylib', () => { + throw new Error('boom from loadExtension'); + }); + db.get('SELECT 1 AS v', (err2, row) => { + if (!err2) settled = row && row.v === 1; + }); + }) + .then(() => { + assert.strictEqual( + settled, + true, + 'the query queued behind the throwing loadExtension never settled', + ); + db.close(done); + }) + .catch((err3) => done(err3)); + }); + }); + + it('open: a throwing open callback does not wedge the connection', (_t, done) => { + let settled = false; + + withCapturedThrow('boom from open', async () => { + const db = new sqlite3.Database(':memory:', () => { + throw new Error('boom from open'); + }); + // Queued behind the open by construction: it was scheduled + // while the connection was still Opening. + db.get('SELECT 1 AS v', (err, row) => { + if (!err) settled = row && row.v === 1; + }); + setTimeout(() => { + db.close(() => { + // nothing to assert; just release the handle + }); + }, 100); + }) + .then(() => { + assert.strictEqual( + settled, + true, + 'the query queued behind the throwing open never settled', + ); + done(); + }) + .catch((err) => done(err)); + }); + + it('close: a throwing close callback fails the work queued behind it', (_t, done) => { + const db = new sqlite3.Database(':memory:', (err) => { + assert.ifError(err); + let settled = false; + + withCapturedThrow('boom from close', async () => { + // Queued behind the close: scheduled while the close is + // still Closing, so it can only be failed by the drain + // after the close completes. + db.close(() => { + throw new Error('boom from close'); + }); + db.get('SELECT 1 AS v', (err2) => { + // The connection is closed: the call must settle + // with the closed-database error, not hang forever. + settled = err2 && err2.code === 'SQLITE_MISUSE'; + }); + }) + .then(() => { + assert.strictEqual( + settled, + true, + 'the query queued behind the throwing close never settled', + ); + done(); + }) + .catch((err3) => done(err3)); + }); + }); +}); From 5efb6ed8ec8c9d5f68a9a035d98ef4a4ecd9c131 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Thu, 27 Aug 2026 10:08:29 +0100 Subject: [PATCH 17/33] Electron test harness: watchdogs and signal handling so no Electron is left running Signed-off-by: Prabhu Subramanian --- test/electron/asar.mjs | 12 +++++++++ test/electron/main.mjs | 46 ++++++++++++++++++++++++++++++++++- test/electron/run.mjs | 55 +++++++++++++++++++++++++++++++++++++++++- 3 files changed, 111 insertions(+), 2 deletions(-) diff --git a/test/electron/asar.mjs b/test/electron/asar.mjs index fea5a90..6f943cd 100644 --- a/test/electron/asar.mjs +++ b/test/electron/asar.mjs @@ -100,6 +100,13 @@ process.dlopen = function (m, f, ...rest) { return realDlopen.call(process, m, f, ...rest); }; +// This app has no window, so a hang here would be invisible: force it +// down rather than leaving an unresponsive Electron on the desktop. +setTimeout(() => { + console.log('FIXTURE_TIMEOUT'); + process.exit(4); +}, 45000).unref?.(); + try { const sqlite3 = (await import('@appthreat/sqlite3')).default; const db = new sqlite3.Database(join(app.getPath('userData'), 'asar-probe.db')); @@ -181,6 +188,11 @@ function runPackaged(outDir) { const out = execFileSync(binary, { encoding: 'utf8', timeout: 60000, + // SIGKILL rather than the default SIGTERM: a packaged + // Electron app with no window is invisible on the desktop, + // so one that ignores a polite signal would be left running + // with nothing for the user to close. + killSignal: 'SIGKILL', }); return { code: 0, out }; } catch (err) { diff --git a/test/electron/main.mjs b/test/electron/main.mjs index a30d6f1..b49a26d 100644 --- a/test/electron/main.mjs +++ b/test/electron/main.mjs @@ -28,6 +28,49 @@ import { app, utilityProcess } from 'electron'; const here = dirname(fileURLToPath(import.meta.url)); const root = join(here, '..', '..'); +// Force the process down on every path, including the ones where +// Electron would otherwise sit forever. A main process with no window +// is invisible: when this harness hung once (app.whenReady never +// resolving, the deadlock described above), it left an unresponsive +// Electron running for hours with nothing on screen to close. Anything +// that can hang here must be on a timer. +function hardExit(code) { + try { + app.exit(code); + } catch { + // app may not exist yet, or may already be tearing down. + } + // app.exit is a no-op before the app is ready, which is exactly the + // deadlock case — so always follow it with a real process exit. + setTimeout(() => process.exit(code), 500).unref?.(); +} + +// Armed at module scope, deliberately not inside whenReady().then(): +// the failure this exists for is whenReady() never resolving, so a +// watchdog installed in that callback would never be armed at all. +const HARNESS_TIMEOUT_MS = Number( + process.env.ELECTRON_HARNESS_TIMEOUT_MS ?? 120000, +); +const watchdog = setTimeout(() => { + console.error( + `FAIL harness watchdog — no result after ${HARNESS_TIMEOUT_MS} ms; ` + + 'forcing exit (app.whenReady() may never have resolved)', + ); + hardExit(1); +}, HARNESS_TIMEOUT_MS); +// unref so the watchdog never itself keeps an otherwise-finished process +// alive; Electron's own event loop keeps us running, so it still fires. +watchdog.unref?.(); + +process.on('uncaughtException', (err) => { + console.error(`FAIL uncaught exception — ${err?.stack ?? String(err)}`); + hardExit(1); +}); +process.on('unhandledRejection', (err) => { + console.error(`FAIL unhandled rejection — ${err?.stack ?? String(err)}`); + hardExit(1); +}); + const failures = []; const passes = []; function check(name, ok, detail = '') { @@ -136,8 +179,9 @@ app.whenReady().then(async () => { } catch (err) { check('harness ran without throwing', false, err?.stack ?? String(err)); } + clearTimeout(watchdog); console.log( `\n${passes.length} passed, ${failures.length} failed${failures.length ? `: ${failures.join('; ')}` : ''}`, ); - app.exit(failures.length === 0 ? 0 : 1); + hardExit(failures.length === 0 ? 0 : 1); }); diff --git a/test/electron/run.mjs b/test/electron/run.mjs index ab7b76c..13bc792 100644 --- a/test/electron/run.mjs +++ b/test/electron/run.mjs @@ -56,10 +56,63 @@ const args = : [join(here, 'main.mjs')]; const child = spawn(electronBin, args, { cwd: root, env, stdio: 'inherit' }); + +// Never leave an Electron process behind. A main process with no window +// is invisible on the desktop, so a hung child is not something the user +// can see or close — it just sits there consuming a core. Three ways it +// gets cleaned up: a watchdog here (in case the child's own watchdog is +// the thing that failed), forwarding the signals that stop us, and a +// last-chance kill on parent exit. +let settled = false; + +function stopChild(signal = 'SIGTERM') { + if (child.exitCode !== null || child.signalCode !== null) return; + child.kill(signal); + // SIGKILL anything that ignores the polite request. + setTimeout(() => { + if (child.exitCode === null && child.signalCode === null) { + child.kill('SIGKILL'); + } + }, 5000).unref?.(); +} + +const TIMEOUT_MS = Number( + process.env.ELECTRON_RUN_TIMEOUT_MS ?? (mode === 'suite' ? 900000 : 180000), +); +const watchdog = setTimeout(() => { + console.error( + `electron ${mode} exceeded ${TIMEOUT_MS} ms — terminating the child`, + ); + stopChild(); + // Give the kill a moment to land, then fail loudly rather than + // inheriting the hang we were trying to prevent. + setTimeout(() => { + if (!settled) process.exit(1); + }, 8000).unref?.(); +}, TIMEOUT_MS); +watchdog.unref?.(); + +for (const sig of ['SIGINT', 'SIGTERM', 'SIGHUP']) { + process.on(sig, () => { + stopChild(sig === 'SIGHUP' ? 'SIGTERM' : sig); + }); +} +process.on('exit', () => stopChild('SIGKILL')); + child.on('error', (err) => { + settled = true; + clearTimeout(watchdog); console.error( `failed to launch electron at ${electronBin}: ${err.message}`, ); process.exit(2); }); -child.on('close', (code) => process.exit(code ?? 1)); +child.on('close', (code, signal) => { + settled = true; + clearTimeout(watchdog); + if (code === null) { + console.error(`electron ${mode} terminated by ${signal}`); + process.exit(1); + } + process.exit(code); +}); From 41808fc4e764dda19abd558d59d6bb28dfe29769 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Thu, 27 Aug 2026 11:05:29 +0100 Subject: [PATCH 18/33] Fix a load-sensitive race in the backup test helper; add a local container test matrix Signed-off-by: Prabhu Subramanian --- package.json | 3 +- test/support/throwing_backup_child.mjs | 16 +- tools/test-matrix.mjs | 247 +++++++++++++++++++++++++ 3 files changed, 264 insertions(+), 2 deletions(-) create mode 100644 tools/test-matrix.mjs diff --git a/package.json b/package.json index 49ed31d..0e7da7f 100644 --- a/package.json +++ b/package.json @@ -66,7 +66,8 @@ "test:electron:asar": "node test/electron/asar.mjs", "bench": "node bench/bench.js", "gen-types": "node tools/gen-types.js", - "test:types": "tsd && tsc --noEmit -p tsconfig.check.json" + "test:types": "tsd && tsc --noEmit -p tsconfig.check.json", + "test:matrix": "node tools/test-matrix.mjs" }, "license": "BSD-3-Clause", "keywords": [ diff --git a/test/support/throwing_backup_child.mjs b/test/support/throwing_backup_child.mjs index 38fcd5b..94f221f 100644 --- a/test/support/throwing_backup_child.mjs +++ b/test/support/throwing_backup_child.mjs @@ -12,7 +12,9 @@ import path from 'node:path'; import sqlite3 from '../../lib/sqlite3.js'; +let sawThrow = false; process.on('uncaughtException', (err) => { + sawThrow = true; console.log(`UNCAUGHT:${err.message}`); }); @@ -37,7 +39,19 @@ backup.step(-1, function () { throw new Error('step callback boom'); }); -await new Promise((resolve) => setTimeout(resolve, 100)); +// Wait for the backup step to actually finish, rather than assuming it +// fits in a fixed sleep. The point of this scenario is what the *next* +// call sees after a throwing step callback, so the step's async work has +// to have landed first — otherwise getSync legitimately reports "database +// is busy" and the test fails for a reason that has nothing to do with +// the call guard it exists to check. A fixed 100 ms raced on loaded +// machines: on a CPU-starved ubuntu-22.04 runner (and reproducibly in a +// 1-CPU container under load) the step was still running at 100 ms, +// failing ~15 runs in 20 on this commit and on its parent alike. +const deadline = Date.now() + 10000; +while (Date.now() < deadline && !(sawThrow && db.state.pending === 0)) { + await new Promise((resolve) => setTimeout(resolve, 10)); +} try { const row = db.getSync('SELECT 1 AS x'); diff --git a/tools/test-matrix.mjs b/tools/test-matrix.mjs new file mode 100644 index 0000000..5d643c8 --- /dev/null +++ b/tools/test-matrix.mjs @@ -0,0 +1,247 @@ +// Runs the test suite across a matrix of container targets locally, so a +// platform-specific or load-sensitive failure can be reproduced without +// pushing and waiting for CI. +// +// This exists because CI failures have repeatedly not reproduced on a +// developer machine: the D08 segfault was musl-only, and an +// ubuntu-22.04 flake in D10 needed glibc *and* Node 26 *and* a starved +// CPU before it showed up at all. +// +// node tools/test-matrix.mjs # every target, full suite +// node tools/test-matrix.mjs --only=ubuntu22-node26 +// node tools/test-matrix.mjs --cpus=1 --load=6 # reproduce a slow runner +// node tools/test-matrix.mjs --repeat=20 --cmd='node test/support/foo.mjs' +// node tools/test-matrix.mjs --list +// +// Notes on fidelity: +// * The working tree is copied in, but node_modules/, build/, +// prebuilds/ and test/tmp/ are left behind and the addon is rebuilt +// inside the container. Copying those in silently changes results — +// a stale test/tmp made a backup fixture fail fast and hid a race +// that only appeared once the directory existed. +// * Fixtures are generated inside the container (test/support/createdb.js), +// not copied, for the same reason. +import { execFileSync, spawnSync } from 'node:child_process'; +import { mkdtempSync, writeFileSync } from 'node:fs'; +import { tmpdir } from 'node:os'; +import { dirname, join } from 'node:path'; +import { fileURLToPath } from 'node:url'; + +const root = join(dirname(fileURLToPath(import.meta.url)), '..'); + +// `node: null` means the base image already ships Node. +const TARGETS = { + // Mirrors the CI ubuntu-22.04 job, which builds against Node 26. + 'ubuntu22-node26': { + base: 'ubuntu:22.04', + node: '26.0.0', + pkg: 'apt', + note: 'glibc 2.35, matches the CI ubuntu-22.04 job', + }, + 'ubuntu22-node24': { + base: 'ubuntu:22.04', + node: '24.19.0', + pkg: 'apt', + note: 'glibc 2.35, the engines floor', + }, + 'alpine-node24': { + base: 'node:24-alpine', + node: null, + pkg: 'apk', + note: 'musl — the D08 segfault was musl-only', + }, + 'debian-node24': { + base: 'node:24', + node: null, + pkg: 'apt', + note: 'glibc 2.36+', + }, +}; + +function parseArgs(argv) { + const opts = { + only: null, + cpus: null, + load: 0, + repeat: 1, + cmd: 'pnpm run test', + platform: 'linux/amd64', + list: false, + keepGoing: true, + }; + for (const arg of argv) { + const [key, ...rest] = arg.replace(/^--/, '').split('='); + const value = rest.join('='); + if (key === 'list') opts.list = true; + else if (key === 'only') opts.only = value.split(',').filter(Boolean); + else if (key === 'cpus') opts.cpus = value; + else if (key === 'load') opts.load = Number(value); + else if (key === 'repeat') opts.repeat = Number(value); + else if (key === 'cmd') opts.cmd = value; + else if (key === 'platform') opts.platform = value; + else { + console.error(`unknown option: ${arg}`); + process.exit(2); + } + } + return opts; +} + +const opts = parseArgs(process.argv.slice(2)); + +if (opts.list) { + for (const [name, t] of Object.entries(TARGETS)) { + console.log(`${name.padEnd(18)} ${t.base.padEnd(16)} ${t.note}`); + } + process.exit(0); +} + +const selected = opts.only ?? Object.keys(TARGETS); +for (const name of selected) { + if (!TARGETS[name]) { + console.error( + `unknown target: ${name}\nknown: ${Object.keys(TARGETS).join(', ')}`, + ); + process.exit(2); + } +} + +// The pinned pnpm, so the container matches the repo rather than +// whatever npm's dist-tag happens to be today. +const packageManager = + JSON.parse( + execFileSync( + 'node', + ['-p', 'JSON.stringify(require("./package.json"))'], + { + cwd: root, + encoding: 'utf8', + }, + ), + ).packageManager ?? 'pnpm@11'; + +function dockerfileFor(target) { + const lines = [`FROM ${target.base}`]; + if (target.pkg === 'apt') { + lines.push( + 'ENV DEBIAN_FRONTEND=noninteractive', + 'RUN apt-get update && apt-get install -y --no-install-recommends ' + + 'curl python3 make g++ xz-utils ca-certificates ' + + '>/dev/null 2>&1 && rm -rf /var/lib/apt/lists/*', + ); + } else { + lines.push('RUN apk add --no-cache python3 make g++ >/dev/null 2>&1'); + } + if (target.node) { + lines.push( + `RUN curl -fsSL https://nodejs.org/dist/v${target.node}/node-v${target.node}-linux-x64.tar.xz -o /n.tar.xz \\ + && tar -xJf /n.tar.xz -C /usr/local --strip-components=1 && rm /n.tar.xz`, + ); + } + // Node 26 no longer bundles corepack, so install pnpm outright. + lines.push(`RUN npm i -g ${packageManager} >/dev/null 2>&1`); + return lines.join('\n'); +} + +function buildImage(name, target) { + const tag = `sq3-matrix-${name}`; + const dir = mkdtempSync(join(tmpdir(), 'sq3-matrix-')); + writeFileSync(join(dir, 'Dockerfile'), dockerfileFor(target)); + const res = spawnSync( + 'docker', + ['build', '--platform', opts.platform, '-t', tag, dir], + { stdio: ['ignore', 'ignore', 'pipe'], encoding: 'utf8' }, + ); + if (res.status !== 0) { + throw new Error( + `docker build failed for ${name}:\n${res.stderr?.slice(-1500)}`, + ); + } + return tag; +} + +// Everything volatile is rebuilt inside the container; see the header. +const SETUP = [ + 'cp -R /src /work', + 'cd /work', + 'rm -rf node_modules prebuilds build test/tmp', + 'pnpm install --ignore-scripts >/dev/null 2>&1', + 'pnpm run rebuild >/dev/null 2>&1 || { echo "REBUILD FAILED"; exit 90; }', + 'mkdir -p test/tmp', + 'node test/support/createdb.js >/dev/null 2>&1', +].join('; '); + +function runTarget(name, target) { + const tag = buildImage(name, target); + const spinners = + opts.load > 0 + ? `for i in $(seq 1 ${opts.load}); do (while :; do :; done) & done; ` + : ''; + const body = + opts.repeat > 1 + ? `F=0; for i in $(seq 1 ${opts.repeat}); do ${opts.cmd} >/dev/null 2>&1 || F=$((F+1)); done; ` + + `echo "REPEAT_FAILURES=$F/${opts.repeat}"; [ "$F" = "0" ]` + : opts.cmd; + const args = ['run', '--rm', '--platform', opts.platform]; + if (opts.cpus) args.push(`--cpus=${opts.cpus}`); + args.push( + '-v', + `${root}:/src:ro`, + tag, + 'sh', + '-c', + `${SETUP}; ${spinners}${body}`, + ); + + const started = Date.now(); + const res = spawnSync('docker', args, { encoding: 'utf8' }); + const out = `${res.stdout ?? ''}${res.stderr ?? ''}`; + process.stdout.write(out); + return { + name, + status: res.status, + seconds: Math.round((Date.now() - started) / 1000), + summary: summarise(out, res.status), + }; +} + +function summarise(out, status) { + const repeat = out.match(/REPEAT_FAILURES=(\S+)/)?.[1]; + if (repeat) return `failures ${repeat}`; + if (out.includes('REBUILD FAILED')) return 'native build failed'; + const pass = out.match(/^ℹ pass (\d+)$/m)?.[1]; + const fail = out.match(/^ℹ fail (\d+)$/m)?.[1]; + if (pass !== undefined) return `pass ${pass}, fail ${fail ?? '?'}`; + return status === 0 ? 'ok' : `exit ${status}`; +} + +const results = []; +for (const name of selected) { + console.log(`\n=== ${name} (${TARGETS[name].base}) ===`); + try { + results.push(runTarget(name, TARGETS[name])); + } catch (err) { + console.error(err.message); + results.push({ + name, + status: 1, + seconds: 0, + summary: 'image build failed', + }); + } +} + +console.log('\n──────── matrix summary ────────'); +for (const r of results) { + const mark = r.status === 0 ? 'PASS' : 'FAIL'; + console.log( + `${mark} ${r.name.padEnd(18)} ${r.summary.padEnd(22)} ${r.seconds}s`, + ); +} +const failed = results.filter((r) => r.status !== 0); +console.log( + failed.length + ? `\n${failed.length} of ${results.length} targets failed` + : `\nall ${results.length} targets passed`, +); +process.exit(failed.length ? 1 : 0); From eabbe35c7782b094d2860b3ade592def8932647c Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Thu, 27 Aug 2026 11:15:37 +0100 Subject: [PATCH 19/33] Document the local container test matrix Signed-off-by: Prabhu Subramanian --- README.md | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/README.md b/README.md index 1de0b9a..2a4f3a6 100644 --- a/README.md +++ b/README.md @@ -702,8 +702,23 @@ pnpm run lint # biome check --write (autofix; CI runs lint:check) pnpm run test # node:test, 20s per-test timeout, files run in parallel pnpm run prebuild # produce the shipping prebuilds/ artifacts pnpm run test:electron # the full suite + app-env harness inside Electron +pnpm run test:matrix # the suite across glibc/musl containers (needs Docker) ``` +`test:matrix` exists for the failures that do not reproduce on a developer +machine — a musl-only segfault, or a race that needs an older glibc, a +specific Node and a busy CPU before it shows up at all: + +```bash +node tools/test-matrix.mjs --list # the targets and why each exists +node tools/test-matrix.mjs --cpus=1 --load=6 # simulate a slow CI runner +node tools/test-matrix.mjs --repeat=20 --cmd='node --test test/foo.test.js' +``` + +It rebuilds the addon and regenerates fixtures inside each container, +ignoring your local `node_modules/`, `build/`, `prebuilds/` and `test/tmp/`, +so a result does not depend on working-tree leftovers. + Always use `pnpm run rebuild`, never bare `pnpm rebuild` — the latter is a pnpm builtin that rebuilds *dependencies*, not this repo's `rebuild` script. See [docs/install.md](docs/install.md#development) for the full guide, From f0b0bf8e6dbef1eec27c04dc433d7872b3bacc72 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Thu, 27 Aug 2026 11:44:35 +0100 Subject: [PATCH 20/33] Fix a Windows-only path bug in the backup guard test; run the suite on Windows in CI Signed-off-by: Prabhu Subramanian --- .github/workflows/ci.yml | 5 +++++ test/state_machine.test.js | 11 +++++++++-- 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 2decb03..49d8a62 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -75,6 +75,11 @@ jobs: os: - ubuntu-22.04 - macos-latest + # Added after a Windows-only path bug (a /\/test$/ strip that + # never matches a backslash path) survived five deliverables + # because the suite ran on Linux and macOS only — the Electron + # job was the first thing ever to run it on Windows. + - windows-latest name: test (${{ matrix.os }}) steps: - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 diff --git a/test/state_machine.test.js b/test/state_machine.test.js index 00341e5..93a19bc 100644 --- a/test/state_machine.test.js +++ b/test/state_machine.test.js @@ -4,6 +4,7 @@ import assert from 'node:assert'; import { spawn } from 'node:child_process'; +import { join } from 'node:path'; import { describe, it } from 'node:test'; import sqlite3 from '../lib/sqlite3.js'; @@ -14,10 +15,16 @@ describe('backup call guard', function () { it('a throwing step callback does not wedge the connection', { timeout: 30000, }, async function () { + // Absolute path and a joined cwd, both built with node:path: the + // previous form stripped the trailing directory with /\/test$/, + // which never matches a Windows path, leaving cwd inside test/ so + // the relative argument resolved to test\test\support\… and the + // child died with MODULE_NOT_FOUND. Nothing caught it because the + // suite does not run on Windows in CI — only the Electron job does. const child = spawn( process.execPath, - ['test/support/throwing_backup_child.mjs'], - { cwd: import.meta.dirname.replace(/\/test$/, '') }, + [join(import.meta.dirname, 'support', 'throwing_backup_child.mjs')], + { cwd: join(import.meta.dirname, '..') }, ); let out = ''; child.stdout.on('data', (chunk) => { From 8a2442bc07ddec5fa1a3e6027f4c2584f54f2468 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Thu, 27 Aug 2026 12:31:44 +0100 Subject: [PATCH 21/33] Run tests without shell globbing, refuse empty runs, and gate publish on every check Signed-off-by: Prabhu Subramanian --- .github/workflows/ci.yml | 30 +++++++++++++++++++-- package.json | 2 +- test/electron/run.mjs | 11 ++++---- tools/run-tests.mjs | 58 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 92 insertions(+), 9 deletions(-) create mode 100644 tools/run-tests.mjs diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 49d8a62..475376a 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -307,7 +307,13 @@ jobs: # post-merge on release/v9 and on demand. electron-asar: needs: build - if: github.event_name == 'workflow_dispatch' || (github.event_name == 'push' && startsWith(github.ref, 'refs/heads/release/')) + # Tags included: publish depends on this job, so it has to actually + # run on the event that publishes rather than being skipped past. + if: >- + github.event_name == 'workflow_dispatch' + || (github.event_name == 'push' + && (startsWith(github.ref, 'refs/heads/release/') + || startsWith(github.ref, 'refs/tags/'))) runs-on: ubuntu-latest timeout-minutes: 30 steps: @@ -333,7 +339,27 @@ jobs: run: xvfb-run -a pnpm run test:electron:asar publish: - needs: [build, build-qemu] + # Everything that can prove the package works gates publishing — + # previously only [build, build-qemu] did, so a tag could publish to + # npm with the suite, the types, the lint and every Electron job red. + # + # always() with an explicit failure/cancellation check, rather than a + # bare needs list, because electron-asar does not run on every event: + # a skipped dependency would otherwise skip publish too, including + # the pull-request dry run. Skipped is tolerated here; failed and + # cancelled are not. + needs: + - lint + - types + - test + - build + - build-qemu + - electron + - electron-asar + if: >- + always() + && !contains(needs.*.result, 'failure') + && !contains(needs.*.result, 'cancelled') runs-on: ubuntu-22.04 permissions: contents: write diff --git a/package.json b/package.json index 0e7da7f..995017a 100644 --- a/package.json +++ b/package.json @@ -61,7 +61,7 @@ "lint:check": "biome check", "lint:errors": "biome check --diagnostic-level=error", "lint:jsdoc": "node contrib/check-jsdoc.js", - "test": "node test/support/createdb.js && node tools/check-no-only.js && node --test --test-reporter=spec --test-timeout=20000 'test/*.test.js'", + "test": "node test/support/createdb.js && node tools/check-no-only.js && node tools/run-tests.mjs", "test:electron": "node test/support/createdb.js && node tools/check-no-only.js && node test/electron/run.mjs suite && node test/electron/run.mjs main", "test:electron:asar": "node test/electron/asar.mjs", "bench": "node bench/bench.js", diff --git a/test/electron/run.mjs b/test/electron/run.mjs index 13bc792..a8053e3 100644 --- a/test/electron/run.mjs +++ b/test/electron/run.mjs @@ -45,14 +45,13 @@ const env = { ...(mode === 'suite' ? { ELECTRON_RUN_AS_NODE: '1' } : {}), }; +// suite mode goes through the same runner as `pnpm run test`, so the +// file list and the "refuse to pass on zero tests" guard are shared +// rather than duplicated here. run-tests.mjs re-spawns process.execPath, +// which under ELECTRON_RUN_AS_NODE is this Electron binary. const args = mode === 'suite' - ? [ - '--test', - '--test-reporter=spec', - '--test-timeout=20000', - 'test/*.test.js', - ] + ? [join(root, 'tools', 'run-tests.mjs')] : [join(here, 'main.mjs')]; const child = spawn(electronBin, args, { cwd: root, env, stdio: 'inherit' }); diff --git a/tools/run-tests.mjs b/tools/run-tests.mjs new file mode 100644 index 0000000..2049edb --- /dev/null +++ b/tools/run-tests.mjs @@ -0,0 +1,58 @@ +// Resolves the test files in Node and runs them, instead of handing a +// glob to the shell. +// +// `node --test 'test/*.test.js'` looks portable and is not: POSIX sh +// strips the single quotes and Node expands the glob, but cmd.exe treats +// them as ordinary characters, so Node receives a pattern with quotes in +// it, matches nothing, reports "tests 0" and **exits 0**. Every Windows +// CI job was green on zero tests for months. A silently empty test run +// is worse than a failing one, so this script also refuses to pass when +// it finds implausibly few files. +// +// node tools/run-tests.mjs # the whole suite +// node tools/run-tests.mjs test/pool.test.js … # explicit files +import { spawnSync } from 'node:child_process'; +import { globSync } from 'node:fs'; +import { dirname, join, relative } from 'node:path'; +import { fileURLToPath } from 'node:url'; + +const root = join(dirname(fileURLToPath(import.meta.url)), '..'); + +// A floor, not an exact count, so adding tests never edits this. It only +// has to be high enough that "the glob broke" cannot slip through. +const MINIMUM_TEST_FILES = 30; + +const explicit = process.argv.slice(2).filter((a) => !a.startsWith('-')); +const passthrough = process.argv.slice(2).filter((a) => a.startsWith('-')); + +const files = explicit.length + ? explicit + : globSync('test/*.test.js', { cwd: root }) + .map((f) => relative(root, join(root, f))) + .sort(); + +if (!explicit.length && files.length < MINIMUM_TEST_FILES) { + console.error( + `run-tests: found only ${files.length} test file(s) under test/, expected at least ` + + `${MINIMUM_TEST_FILES}. Refusing to report success on an empty or truncated run — ` + + 'this is the failure mode where a broken glob makes CI green on zero tests.', + ); + process.exit(1); +} + +const args = [ + '--test', + '--test-reporter=spec', + '--test-timeout=20000', + ...passthrough, + ...files, +]; + +// process.execPath, so this follows whichever runtime invoked it — plain +// Node, or Electron's Node build under ELECTRON_RUN_AS_NODE. +const res = spawnSync(process.execPath, args, { cwd: root, stdio: 'inherit' }); +if (res.error) { + console.error(`run-tests: failed to start: ${res.error.message}`); + process.exit(1); +} +process.exit(res.status ?? 1); From 3ec7c5139b4af0815c3e660d6e8cacd0eecee1b6 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Thu, 27 Aug 2026 13:02:59 +0100 Subject: [PATCH 22/33] fix windows arm timeout Signed-off-by: Prabhu Subramanian --- test/parallel_insert.test.js | 30 +++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-) diff --git a/test/parallel_insert.test.js b/test/parallel_insert.test.js index ba710a3..81825bb 100644 --- a/test/parallel_insert.test.js +++ b/test/parallel_insert.test.js @@ -20,17 +20,29 @@ describe('parallel', function () { db.run(`CREATE TABLE foo (${columns})`, done); }); - it('should insert in parallel', function (_t, done) { - for (let i = 0; i < 1000; i++) { - const values = []; - for (let j = 0; j < columns.length; j++) { - values.push(i * j); + // 1000 file-backed INSERTs, each its own implicit transaction (journal + // file created and deleted per row). Measured at 38s on GitHub's + // windows-11-arm runner — about 2x over the 20s suite-wide ceiling that + // tools/run-tests.mjs applies, while every other runner finishes in + // single-digit seconds. The override lifts the ceiling for this test + // only; the hang detector still guards the rest of the suite. + it( + 'should insert in parallel', + { + timeout: 180000, + }, + function (_t, done) { + for (let i = 0; i < 1000; i++) { + const values = []; + for (let j = 0; j < columns.length; j++) { + values.push(i * j); + } + db.run(`INSERT INTO foo VALUES (${values})`); } - db.run(`INSERT INTO foo VALUES (${values})`); - } - db.wait(done); - }); + db.wait(done); + }, + ); it('should close the database', function (_t, done) { db.close(done); From 64b6a52bfabebdce90b3784f5907969bb18f9bae Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Thu, 27 Aug 2026 13:15:38 +0100 Subject: [PATCH 23/33] CI: test Node 24 and 26; consume the shipped prebuilds under Node 26 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Node availability was checked per target before adding combinations: - setup-node delivers 26 on every hosted runner (linux/darwin/win, x64 and arm64), so the fast `test` job now runs os x node with {24, 26} and gains ubuntu-22.04-arm (arm64 Linux was previously suite-tested only inside the slower `build` matrix). - alpine3.20 — the musl build variant — has no Node 26 image (node:26-alpine tags start at 3.22), so build-qemu stays on 24 and the Node-major musl coverage comes from a consumer: the new prebuild-consumer-musl job runs the suite against the alpine3.20-built artifact inside node:26-alpine3.22. - prebuild-consumer (glibc/darwin/win, node 26) downloads the build artifacts and runs the suite with PREBUILDS_ONLY=1 — no compile, so green means the shipped binary itself passed, proving the napi one-build-many-Nodes promise the package is sold on. - Electron is unaffected: 43.4.1 embeds Node 24.18.1 (measured), so those jobs add a different runtime, not a different Node major. Deliberately not added: node 26 on windows-11-arm and macos-15-intel (slow runners, napi-identical to covered pairs), musl arm64 x 26 (arch covered by build-qemu), and any change to the musl build floor (alpine3.20 went EOL 2026-04-01 — bumping the floor is its own decision). publish gates on both new jobs. Verified locally: full suite in node:26-alpine3.22 against a musl prebuild built in-container (750/748/0/2, same as darwin/node 26); PREBUILDS_ONLY=1 suite green on this machine; actionlint reports no new findings. --- .github/workflows/ci.yml | 89 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 87 insertions(+), 2 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 475376a..b48c6ca 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -74,20 +74,31 @@ jobs: matrix: os: - ubuntu-22.04 + # Arm64 Linux was previously covered only by the slower `build` + # matrix, which is about producing the artifact; the suite now + # runs here on every push too. + - ubuntu-22.04-arm - macos-latest # Added after a Windows-only path bug (a /\/test$/ strip that # never matches a backslash path) survived five deliverables # because the suite ran on Linux and macOS only — the Electron # job was the first thing ever to run it on Windows. - windows-latest - name: test (${{ matrix.os }}) + # 24 is the engines floor and the LTS line; 26 is Current (and the + # local dev Node). napi means one binary serves both majors, but + # the C++ still compiles against each major's headers and the JS + # surface still meets each major's runtime changes. + node: + - 24 + - 26 + name: test (${{ matrix.os }}, node=${{ matrix.node }}) steps: - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 - name: Setup pnpm uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 with: - node-version: 24 + node-version: ${{ matrix.node }} scope: '@appthreat' - name: Set up Python uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0 @@ -338,6 +349,78 @@ jobs: ELECTRON_DISABLE_SANDBOX: '1' run: xvfb-run -a pnpm run test:electron:asar + # The Node-API promise, end to end: the binary built once under Node 24 + # by the `build` matrix must run unmodified under every supported Node. + # This job never compiles — no rebuild step, and PREBUILDS_ONLY makes + # node-gyp-build refuse build/Release — so green here means the shipped + # artifact itself passed the suite, not a fresh build of it. (The `test` + # matrix compiles from source per Node major; this one consumes.) + prebuild-consumer: + needs: build + runs-on: ${{ matrix.os }} + timeout-minutes: 20 + strategy: + fail-fast: false + matrix: + include: + - os: ubuntu-22.04 + artifact: prebuilds-ubuntu-22.04-x64-x64-24 + - os: macos-latest + artifact: prebuilds-macos-latest-arm64-arm64-24 + - os: windows-latest + artifact: prebuilds-windows-latest-x64-x64-24 + name: prebuild-consumer (${{ matrix.os }}, node=26) + steps: + - uses: actions/checkout@de0fac2e4500dabe0009c67214ff5f5447ce83dd # v6.0.2 + - name: Setup pnpm + uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 + - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 + with: + node-version: 26 + scope: '@appthreat' + - name: Install dependencies + run: pnpm install --frozen-lockfile --ignore-scripts + - name: Download the shipped prebuilds + uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1 + with: + name: ${{ matrix.artifact }} + path: prebuilds/ + - name: Run tests against the prebuilt binary + env: + PREBUILDS_ONLY: '1' + run: pnpm run test + + # The musl half of the same promise. alpine3.20 — the variant the musl + # prebuild is built on — has no Node 26 image (node:26-alpine tags start + # at 3.22), so rather than moving the build floor this job *consumes* + # the alpine3.20-built artifact inside a node:26-alpine3.22 container. + # Same pnpm trick as tools/BinaryBuilder.Dockerfile: pnpm 11 ships + # static musl-safe binaries. x64 only — the arm64 musl artifact is built + # and suite-tested by build-qemu; this adds the Node-major dimension, + # not the arch one. + prebuild-consumer-musl: + needs: build-qemu + runs-on: ubuntu-latest + timeout-minutes: 20 + steps: + - uses: actions/checkout@de0fac2e4500dabe0009c67214ff5f5447ce83dd # v6.0.2 + - name: Setup pnpm + uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 + # Only to resolve the exact packageManager version; the container + # installs its own copy. + - name: Download the shipped musl prebuilds + uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1 + with: + name: prebuilds-qemu-alpine3.20-linux-amd64-24 + path: prebuilds/ + - name: Suite against the musl prebuild under Node 26 + run: | + docker run --rm -v "$PWD:/ws" -w /ws -e PREBUILDS_ONLY=1 node:26-alpine3.22 sh -c " + npm install --global pnpm@$(pnpm --version) && + pnpm install --frozen-lockfile --ignore-scripts && + pnpm run test + " + publish: # Everything that can prove the package works gates publishing — # previously only [build, build-qemu] did, so a tag could publish to @@ -356,6 +439,8 @@ jobs: - build-qemu - electron - electron-asar + - prebuild-consumer + - prebuild-consumer-musl if: >- always() && !contains(needs.*.result, 'failure') From be47b44eea6eb50ff8ff94b8036cad16535f15d6 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Thu, 27 Aug 2026 13:53:22 +0100 Subject: [PATCH 24/33] Fix Windows Node 26 source builds: node-gyp 12 -> 13; refresh action pins MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit test (windows-latest, node=26) failed at link: LNK1117 syntax error in option 'opt:lldltojobs=2', with -flto=thin D9002/LNK4044 warnings on every project. Chain: node-gyp builds build/config.gypi from the RUNNING node's process.config (not the headers' config.gypi — that is only read with --nodedir/--dist-url); the official Windows Node 26 builds are clang-cl/ThinLTO, so process.config carries enable_thin_lto="true" and lto_jobs="2"; Node 26's common.gypi (new since 24) turns those into -flto=thin and /opt:lldltojobs=2 AdditionalOptions on Windows; MSVC link.exe is not lld-link and the latter is a hard LNK1117. Linux/macOS and Node 24 are unaffected (headers config and official 24 builds say false), which is exactly the observed matrix. Fixed upstream in node-gyp 13.0.0 ("disable LTO for addon builds on Windows", nodejs/node-gyp#3331; 13.0.1 adds a VS2026 fix), so the pin moves 12.x -> 13.x and resolves to 13.0.1 — 13.0.2 is 23h old and inside the pnpm minimumReleaseAge gate. The only 13.0.0 breaking change is the node engine range ^22.22.2 || ^24.15.0 || >=26, above our >=24 floor in practice. The three prebuild-consumer failures were transient: all died at "Set up job" with "Unable to resolve action actions/checkout@" before any step, while the same SHA resolved in every other job of the same run — a GitHub action-resolution blip, not a workflow bug. All 24 action pins refreshed with gh actlock -u (SHAs spot-verified against the git refs API): checkout v7.0.1, setup-node v7.0.0, setup-python v7.0.0, upload-artifact v7.0.1; the rest were already latest. Verified locally through node-gyp 13.0.1: full rebuild + suite (750/748/0/2), and the prebuildify -> PREBUILDS_ONLY=1 path the build matrix uses (750/748/0). Windows itself can only be proven in CI. --- .github/workflows/ci.yml | 48 ++++++++++++++--------------- package.json | 4 +-- pnpm-lock.yaml | 66 ++++++++++++++++++++-------------------- 3 files changed, 59 insertions(+), 59 deletions(-) diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index b48c6ca..7276929 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -22,10 +22,10 @@ jobs: runs-on: ubuntu-22.04 timeout-minutes: 10 steps: - - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - name: Setup pnpm uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 - - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 + - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0 with: node-version: 24 scope: '@appthreat' @@ -44,10 +44,10 @@ jobs: runs-on: ubuntu-22.04 timeout-minutes: 10 steps: - - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - name: Setup pnpm uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 - - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 + - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0 with: node-version: 24 scope: '@appthreat' @@ -93,15 +93,15 @@ jobs: - 26 name: test (${{ matrix.os }}, node=${{ matrix.node }}) steps: - - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - name: Setup pnpm uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 - - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 + - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0 with: node-version: ${{ matrix.node }} scope: '@appthreat' - name: Set up Python - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0 + uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0 with: python-version: '3.12' - name: Install dependencies @@ -142,11 +142,11 @@ jobs: name: ${{ matrix.os }} (host=${{ matrix.host }}, target=${{ matrix.target }}) steps: - - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - name: Setup pnpm uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 # Reads the version from the packageManager field in package.json. - - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 + - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0 with: node-version: ${{ matrix.node }} architecture: ${{ matrix.host }} @@ -163,7 +163,7 @@ jobs: restore-keys: | pnpm-store-${{ runner.os }}-${{ matrix.host }}- - name: Set up Python - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0 + uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0 with: python-version: 3.12 - name: Add msbuild to PATH @@ -210,7 +210,7 @@ jobs: run: pnpm run test - name: Upload prebuilds to artifacts - uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0 + uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1 with: name: prebuilds-${{ matrix.os }}-${{ matrix.host }}-${{ matrix.target }}-${{ matrix.node }} path: prebuilds/ @@ -233,13 +233,13 @@ jobs: node: 24 name: ${{ matrix.variant }} (node=${{ matrix.node }}, target=${{ matrix.target }}) steps: - - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - name: Set up QEMU - uses: docker/setup-qemu-action@ce360397dd3f832beb865e1373c09c0e9f86d70a # v4.0.0 + uses: docker/setup-qemu-action@96fe6ef7f33517b61c61be40b68a1882f3264fb8 # v4.2.0 - name: Setup Docker Buildx - uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4.0.0 + uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4.3.0 - name: Build binaries and test run: | @@ -259,7 +259,7 @@ jobs: SAFE_TARGET=$(echo "${{ matrix.target }}" | tr '/' '-') echo "SAFE_TARGET=$SAFE_TARGET" >> $GITHUB_ENV - name: Upload QEMU prebuilds to artifacts - uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7.0.0 + uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1 with: name: prebuilds-qemu-${{ matrix.variant }}-${{ env.SAFE_TARGET }}-${{ matrix.node }} path: prebuilds/ @@ -287,10 +287,10 @@ jobs: artifact: prebuilds-windows-latest-x64-x64-24 name: electron (${{ matrix.os }}) steps: - - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - name: Setup pnpm uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 - - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 + - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0 with: node-version: 24 scope: '@appthreat' @@ -328,10 +328,10 @@ jobs: runs-on: ubuntu-latest timeout-minutes: 30 steps: - - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - name: Setup pnpm uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 - - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 + - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0 with: node-version: 24 scope: '@appthreat' @@ -371,10 +371,10 @@ jobs: artifact: prebuilds-windows-latest-x64-x64-24 name: prebuild-consumer (${{ matrix.os }}, node=26) steps: - - uses: actions/checkout@de0fac2e4500dabe0009c67214ff5f5447ce83dd # v6.0.2 + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - name: Setup pnpm uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 - - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 + - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0 with: node-version: 26 scope: '@appthreat' @@ -403,7 +403,7 @@ jobs: runs-on: ubuntu-latest timeout-minutes: 20 steps: - - uses: actions/checkout@de0fac2e4500dabe0009c67214ff5f5447ce83dd # v6.0.2 + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - name: Setup pnpm uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 # Only to resolve the exact packageManager version; the container @@ -451,9 +451,9 @@ jobs: packages: write id-token: write steps: - - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0 + - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0 with: node-version: 24 scope: '@appthreat' diff --git a/package.json b/package.json index 995017a..4774a35 100644 --- a/package.json +++ b/package.json @@ -36,7 +36,7 @@ "typescript": "~5.9.3" }, "peerDependencies": { - "node-gyp": "12.x" + "node-gyp": "13.x" }, "peerDependenciesMeta": { "node-gyp": { @@ -44,7 +44,7 @@ } }, "optionalDependencies": { - "node-gyp": "12.x" + "node-gyp": "13.x" }, "engines": { "node": ">=24", diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml index c4dad79..c6f74fa 100644 --- a/pnpm-lock.yaml +++ b/pnpm-lock.yaml @@ -41,8 +41,8 @@ importers: version: 5.9.3 optionalDependencies: node-gyp: - specifier: 12.x - version: 12.4.0 + specifier: 13.x + version: 13.0.1 packages: @@ -200,9 +200,9 @@ packages: resolution: {integrity: sha512-5AXjrcMClTryPe9LgZrygpB1lj7s0S9E0+W+AHaVKAVyHanafK86iPSvG5xHVSp/jC+VH1UXu0TAEmY279xH7A==, tarball: https://registry.npmjs.org/@xmldom/xmldom/-/xmldom-0.9.12.tgz} engines: {node: '>=14.6'} - abbrev@4.0.0: - resolution: {integrity: sha512-a1wflyaL0tHtJSmLSOVybYhy22vRih4eduhhrkcjgrWGnRfrZtovJ2FRjxuTtkkj47O/baf0R86QU5OuYpz8fA==, tarball: https://registry.npmjs.org/abbrev/-/abbrev-4.0.0.tgz} - engines: {node: ^20.17.0 || >=22.9.0} + abbrev@5.0.0: + resolution: {integrity: sha512-/XrFJgzQQQHpti1raDJC6m4ws6aNktmjBlhk8Fdlk7LwCEuDoieEJJY9OFHjfiFJFFRM2tK+Ky/IsfbbmlMu1w==, tarball: https://registry.npmjs.org/abbrev/-/abbrev-5.0.0.tgz} + engines: {node: ^22.22.2 || ^24.15.0 || >=26.0.0} ansi-escapes@4.3.2: resolution: {integrity: sha512-gKXj5ALrKWQLsYG9jlTRmR/xKluxHV+Z9QEwNIgCfM1/uwPMCuzVVnh5mwTd+OuBZcwSIMbqssNWRm1lE51QaQ==, tarball: https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-4.3.2.tgz} @@ -589,14 +589,14 @@ packages: resolution: {integrity: sha512-LA4ZjwlnUblHVgq0oBF3Jl/6h/Nvs5fzBLwdEF4nuxnFdsfajde4WfxtJr3CaiH+F6ewcIB/q4jQ4UzPyid+CQ==, tarball: https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.8.4.tgz} hasBin: true - node-gyp@12.4.0: - resolution: {integrity: sha512-OMcPNvqTCFUnNaBlmdgq+lfNqY7gTiSmNRDjY3uAXRyudeKZEZxu3CLtjMQrx4zZxCX2b/mpNqTtwuCJgXhHkw==, tarball: https://registry.npmjs.org/node-gyp/-/node-gyp-12.4.0.tgz} - engines: {node: ^20.17.0 || >=22.9.0} + node-gyp@13.0.1: + resolution: {integrity: sha512-piOr0S10qy5THB+q5BdqkoOx65XL/tjTMUAit3vciPNp+snTOBnGunWH1Rz7XZUxf2T9uFrfT/Ty4+aC3yPeyg==, tarball: https://registry.npmjs.org/node-gyp/-/node-gyp-13.0.1.tgz} + engines: {node: ^22.22.2 || ^24.15.0 || >=26.0.0} hasBin: true - nopt@9.0.0: - resolution: {integrity: sha512-Zhq3a+yFKrYwSBluL4H9XP3m3y5uvQkB/09CwDruCiRmR/UJYnn9W4R48ry0uGC70aeTPKLynBtscP9efFFcPw==, tarball: https://registry.npmjs.org/nopt/-/nopt-9.0.0.tgz} - engines: {node: ^20.17.0 || >=22.9.0} + nopt@10.0.1: + resolution: {integrity: sha512-df3sBr/6ax9hSGuC3CspvLlbnX8cP5L5nZwXF8cGN8l0zSWR6BvzmQ6jPUKjvo6+/xdpkNvEcucBNUdBeeV13g==, tarball: https://registry.npmjs.org/nopt/-/nopt-10.0.1.tgz} + engines: {node: ^22.22.2 || ^24.15.0 || >=26.0.0} hasBin: true normalize-package-data@2.5.0: @@ -684,9 +684,9 @@ packages: resolution: {integrity: sha512-Pdlw/oPxN+aXdmM9R00JVC9WVFoCLTKJvDVLgmJ+qAffBMxsV85l/Lu7sNx4zSzPyoL2euImuEwHhOXdEgNFZQ==, tarball: https://registry.npmjs.org/pretty-format/-/pretty-format-29.7.0.tgz} engines: {node: ^14.15.0 || ^16.10.0 || >=18.0.0} - 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abbrev@4.0.0: + abbrev@5.0.0: optional: true ansi-escapes@4.3.2: @@ -1427,23 +1427,23 @@ snapshots: node-gyp-build@4.8.4: {} - node-gyp@12.4.0: + node-gyp@13.0.1: dependencies: env-paths: 2.2.1 exponential-backoff: 3.1.3 graceful-fs: 4.2.11 - nopt: 9.0.0 - proc-log: 6.1.0 + nopt: 10.0.1 + proc-log: 7.0.0 semver: 7.8.5 tar: 7.5.22 tinyglobby: 0.2.17 - undici: 6.28.0 - which: 6.0.1 + undici: 8.10.0 + which: 7.0.0 optional: true - nopt@9.0.0: + nopt@10.0.1: dependencies: - abbrev: 4.0.0 + abbrev: 5.0.0 optional: true normalize-package-data@2.5.0: @@ -1536,7 +1536,7 @@ snapshots: ansi-styles: 5.2.0 react-is: 18.3.1 - proc-log@6.1.0: + proc-log@7.0.0: optional: true progress@2.0.3: {} @@ -1721,10 +1721,10 @@ snapshots: undici-types@7.18.2: {} - undici@6.28.0: + undici@7.29.0: optional: true - undici@7.29.0: + undici@8.10.0: optional: true util-deprecate@1.0.2: {} @@ -1738,7 +1738,7 @@ snapshots: dependencies: isexe: 2.0.0 - which@6.0.1: + which@7.0.0: dependencies: isexe: 4.0.0 optional: true From e966505d2c35ca00833d14fc173f355ba03d2197 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Thu, 27 Aug 2026 14:34:09 +0100 Subject: [PATCH 25/33] Fix marshalling test race: sync bind paths need a drained connection MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On the ubuntu-22.04-arm build job (run 33074153055), 'round-trips function' failed with "database is busy: sync methods require a fully idle database" instead of the expected bind TypeError — once, in the first integer mode, with the same test green 100ms later in the next mode. Mechanism, reproduced deterministically on the local prebuild: a bind-rejected value throws synchronously out of the db-level wrappers (established v9 semantics), and that throw skips their trailing finalize — the call's async prepare is abandoned in flight, so db.pending stays elevated past the point where the driver's await resolved. Instrumenting the exact 15-path sequence showed +1 pending accumulated per rejected db-level path (5 after db.run). On a fast machine the four awaited stmt paths that follow always drain the stragglers before db.getSync; on a slow, preempted runner one can still be in flight, and the first sync path meets a busy gate. The async paths cannot promise idleness at await-resolution (their internal prepare/finalize round trips are deliberately not part of the awaited op), so the sync drivers in test/support/bindpaths.js now await db.wait() first — an exclusive call that runs only at pending == 0, the same drain discipline the stmt drivers already apply by resolving from inside stmt.finalize's callback. No assertion changed: the sync paths must still produce the bind TypeError. Evidence: PREBUILDS_ONLY node repro shows pending=1 after a sync-throwing db.get, getSync busy, then wait -> 0 -> getSync OK; marshalling 20/20 clean; full suite 750/748/0/2. --- test/support/bindpaths.js | 128 +++++++++++++++++++++----------------- 1 file changed, 70 insertions(+), 58 deletions(-) diff --git a/test/support/bindpaths.js b/test/support/bindpaths.js index 0b270a8..c361d5b 100644 --- a/test/support/bindpaths.js +++ b/test/support/bindpaths.js @@ -34,6 +34,18 @@ function captureSyncThrow(fn) { export function bindPaths(db) { const select = 'SELECT ? AS v'; + // The sync paths below require a fully idle connection, and the + // async paths above cannot promise that at the moment their await + // resolves: a bind-rejected value throws synchronously out of the + // db-level wrappers, abandoning that call's in-flight async + // prepare (db.pending stays elevated for another turn), and those + // wrappers' internal finalize is deliberately fire-and-forget. + // db.wait() schedules an exclusive call that runs only once + // pending == 0, so awaiting it puts every sync path on the idle + // side of the gate — the same discipline the stmt drivers apply + // by resolving from inside stmt.finalize's callback. + const whenIdle = () => new Promise((resolve) => db.wait(resolve)); + const paths = [ { name: 'db.get', @@ -246,84 +258,84 @@ export function bindPaths(db) { { name: 'db.getSync', reads: true, - run: (value) => - new Promise((resolve) => { - try { - resolve({ v: db.getSync(select, [value])?.v }); - } catch (err) { - resolve({ threw: err }); - } - }), + run: async (value) => { + await whenIdle(); + try { + return { v: db.getSync(select, [value])?.v }; + } catch (err) { + return { threw: err }; + } + }, }, { name: 'db.allSync', reads: true, - run: (value) => - new Promise((resolve) => { - try { - resolve({ v: db.allSync(select, [value])[0]?.v }); - } catch (err) { - resolve({ threw: err }); - } - }), + run: async (value) => { + await whenIdle(); + try { + return { v: db.allSync(select, [value])[0]?.v }; + } catch (err) { + return { threw: err }; + } + }, }, { name: 'db.runSync', reads: false, - run: (value) => - new Promise((resolve) => { - try { - db.runSync(select, [value]); - resolve({}); - } catch (err) { - resolve({ threw: err }); - } - }), + run: async (value) => { + await whenIdle(); + try { + db.runSync(select, [value]); + return {}; + } catch (err) { + return { threw: err }; + } + }, }, { name: 'stmt.getSync', reads: true, - run: (value) => - new Promise((resolve) => { - try { - const stmt = db.prepareSync(select); - const out = { v: stmt.getSync([value])?.v }; - stmt.finalize(); - resolve(out); - } catch (err) { - resolve({ threw: err }); - } - }), + run: async (value) => { + await whenIdle(); + try { + const stmt = db.prepareSync(select); + const out = { v: stmt.getSync([value])?.v }; + stmt.finalize(); + return out; + } catch (err) { + return { threw: err }; + } + }, }, { name: 'stmt.allSync', reads: true, - run: (value) => - new Promise((resolve) => { - try { - const stmt = db.prepareSync(select); - const out = { v: stmt.allSync([value])[0]?.v }; - stmt.finalize(); - resolve(out); - } catch (err) { - resolve({ threw: err }); - } - }), + run: async (value) => { + await whenIdle(); + try { + const stmt = db.prepareSync(select); + const out = { v: stmt.allSync([value])[0]?.v }; + stmt.finalize(); + return out; + } catch (err) { + return { threw: err }; + } + }, }, { name: 'stmt.runSync', reads: false, - run: (value) => - new Promise((resolve) => { - try { - const stmt = db.prepareSync(select); - stmt.runSync([value]); - stmt.finalize(); - resolve({}); - } catch (err) { - resolve({ threw: err }); - } - }), + run: async (value) => { + await whenIdle(); + try { + const stmt = db.prepareSync(select); + stmt.runSync([value]); + stmt.finalize(); + return {}; + } catch (err) { + return { threw: err }; + } + }, }, ]; From ab99a868756fdf5d72913cb1774b07f06d97c269 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Thu, 27 Aug 2026 14:55:23 +0100 Subject: [PATCH 26/33] Make ensureExists race-safe: recursive mkdir instead of check-then-create MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit electron (ubuntu-latest) on run 33078211871 failed its whole backup suite: the describe's before-hook threw EEXIST on mkdir 'test/tmp', cancelling all 14 tests. node --test runs each file in its own process, and test/support/helper.js's ensureExists did existsSync-then-mkdirSync — two before-hooks creating test/tmp in the same instant race the check, and the loser gets EEXIST. Electron child processes start slower than plain Node's, which widened the window enough to hit it; the same latent race existed for every plain-Node run. mkdirSync(recursive) has mkdir -p semantics: race-free, and an existing directory is fine. Proven with a 6-process concurrent probe on a fresh directory, 40 rounds: the old form threw EEXIST in 40/40 rounds, recursive in 0/40. Every other mkdir in test/ and tools/ already used recursive; this was the only holdout. No assertion changed. Verified: backup.test.js 14/14, full suite 750/748/0/2, lint clean. --- test/support/helper.js | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/test/support/helper.js b/test/support/helper.js index c675c1d..c64c68c 100644 --- a/test/support/helper.js +++ b/test/support/helper.js @@ -15,9 +15,11 @@ export function deleteFile(name) { } export function ensureExists(name, _cb) { - if (!fs.existsSync(name)) { - fs.mkdirSync(name); - } + // recursive, not existsSync-then-mkdir: node --test runs each file in + // its own process, and two before-hooks creating test/tmp at the same + // moment raced the check (EEXIST cancelled a whole suite once). mkdir + // -p semantics are race-free and tolerate the existing directory. + fs.mkdirSync(name, { recursive: true }); } export function fileDoesNotExist(name) { From 5bc8e4aad1285180acecc9065ad75f83293adc42 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Fri, 28 Aug 2026 01:24:54 +0100 Subject: [PATCH 27/33] Enforce the Node permission model across every open, ATTACH and extension load Signed-off-by: Prabhu Subramanian --- .github/workflows/ci.yml | 60 ++ MIGRATING-TO-V9.md | 37 ++ README.md | 45 +- SECURITY.md | 51 ++ bench/bench.js | 16 + contrib/check-jsdoc.js | 5 + docs/security.md | 231 ++++++++ lib/native.d.ts | 52 ++ lib/promises.d.ts | 10 +- lib/promises.js | 47 +- lib/sqlite3.d.ts | 92 ++- lib/sqlite3.js | 894 ++++++++++++++++++++++++++++-- src/database.cc | 285 +++++++++- src/database.h | 51 ++ src/session.cc | 13 + test/failed_open.test.js | 82 +++ test/permission.test.js | 417 ++++++++++++++ test/support/permission_child.mjs | 330 +++++++++++ test/untrusted.test.js | 344 ++++++++++++ types/consumer.check.ts | 33 ++ 20 files changed, 2986 insertions(+), 109 deletions(-) create mode 100644 SECURITY.md create mode 100644 docs/security.md create mode 100644 test/failed_open.test.js create mode 100644 test/permission.test.js create mode 100644 test/support/permission_child.mjs create mode 100644 test/untrusted.test.js diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 7276929..3ac4404 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -349,6 +349,66 @@ jobs: ELECTRON_DISABLE_SANDBOX: '1' run: xvfb-run -a pnpm run test:electron:asar + # SQLCipher source build (Deliverable 11 §2.4): the --sqlite_libname + # option must keep working, and the smoke test proves the link really + # is SQLCipher (a wrong key must fail), not the vendored plain SQLite. + # Build-only against the distro package; like electron-asar it runs + # post-merge on release/ branches, on tags and on demand, so an apt + # hiccup cannot gate every push. + sqlcipher: + if: >- + github.event_name == 'workflow_dispatch' + || (github.event_name == 'push' + && (startsWith(github.ref, 'refs/heads/release/') + || startsWith(github.ref, 'refs/tags/'))) + runs-on: ubuntu-22.04 + timeout-minutes: 30 + steps: + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 + - name: Setup pnpm + uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 + - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0 + with: + node-version: 24 + scope: '@appthreat' + - name: Install dependencies + run: pnpm install --frozen-lockfile --ignore-scripts + - name: Install SQLCipher + run: sudo apt-get update && sudo apt-get install -y libsqlcipher-dev + - name: Build against the system SQLCipher + env: + # binding.gyp adds <(sqlite)/include; Debian keeps the SQLCipher + # headers under /usr/include/sqlcipher, so point the compiler at + # them too (the same CPPFLAGS dance as docs/security.md). + CPPFLAGS: '-I/usr/include/sqlcipher' + LDFLAGS: '-lsqlcipher' + run: pnpm run rebuild -- --sqlite=/usr --sqlite_libname=sqlcipher + - name: 'Smoke: encrypted database round trip' + run: | + node --input-type=module -e " + import sqlite3 from './lib/sqlite3.js'; + const file = '/tmp/sqlcipher-smoke.db'; + const good = 'correct horse battery staple'; + const db = await sqlite3.open(file); + await db.exec(\`PRAGMA key = '\${good}'; CREATE TABLE t (x); INSERT INTO t VALUES (42)\`); + await db.close(); + const reopen = await sqlite3.open(file); + await reopen.exec(\`PRAGMA key = '\${good}'\`); + const row = await reopen.get('SELECT x FROM t'); + if (row?.x !== 42) throw new Error('encrypted round trip lost the row'); + await reopen.close(); + const wrong = await sqlite3.open(file); + await wrong.exec(\`PRAGMA key = 'wrong key'\`); + try { + await wrong.get('SELECT x FROM t'); + throw new Error('wrong key read the table: this is NOT a SQLCipher build'); + } catch (err) { + if (!/not a database|file is not a database/.test(err.message)) throw err; + } + await wrong.close(); + console.log('SQLCIPHER_OK'); + " + # The Node-API promise, end to end: the binary built once under Node 24 # by the `build` matrix must run unmodified under every supported Node. # This job never compiles — no rebuild step, and PREBUILDS_ONLY makes diff --git a/MIGRATING-TO-V9.md b/MIGRATING-TO-V9.md index 13034f1..488e818 100644 --- a/MIGRATING-TO-V9.md +++ b/MIGRATING-TO-V9.md @@ -358,6 +358,43 @@ removed. See [docs/electron.md](docs/electron.md). before the first run, and `JSON.stringify` of a statement no longer includes them. +## Node permission model, extension policy, untrusted files + +Under Node's `--permission` flag (with `--allow-addons`, which this +package requires to load at all), every open path now checks the target +against the process's fs allowances and refuses with an +`ERR_ACCESS_DENIED`-shaped error that names the path and the flag that +permits it. A writable open needs `fs.write` for the file **and its +directory** (SQLite writes `-journal`/`-wal`/`-shm` beside it — grant +`--allow-fs-write="/*"`). `ATTACH` and `VACUUM INTO` are denied +unless their target is allowlisted with +`db.configure('attachPaths', [...])`, `db.backup()` destinations are +checked like opens, and `loadExtension` is refused unless allowlisted +with `db.configure('extensionPolicy', { allow: [...] })`. With the +permission model off — the overwhelmingly common case — behaviour is +unchanged and the checks cost one property read. Full details and the +explicit list of what remains open: +[docs/security.md](docs/security.md). + +New in the same delivery: + +- `sqlite3.open(filename, { mode, untrusted })` (and the same options + object in the `Database` constructor): `untrusted: true` applies the + hostile-file hardening recipe (defensive mode, untrusted schema, + `writable_schema` off, extension loading permanently disabled, + conservative run-time limits, deny-all ATTACH gate). +- `db.configure('extensionPolicy', { allow } | { deny: true })` — + restrict or permanently disable `loadExtension` on one connection. +- `db.configure('attachPaths', [...] | null)` — the ATTACH-gate + allowlist (works without the permission model too, as defence in + depth). +- Behaviour change at the margins: work queued behind a **failed open** + used to sit stranded forever (the connection stayed in the Opening + state); it now settles with the open's own error, and the connection + behaves as closed (a later `close()` reports the usual `SQLITE_MISUSE`). +- `new Database(filename, )` now + throws a `TypeError` instead of silently ignoring the argument. + ## TypeScript consumers The type declarations are now generated (`pnpm run gen-types`) from the diff --git a/README.md b/README.md index 2a4f3a6..be8d6b7 100644 --- a/README.md +++ b/README.md @@ -630,38 +630,12 @@ npm install --build-from-source --sqlite_magic=”MyCustomMagic15” Note that the magic _must_ be exactly 15 characters long (16 bytes including null terminator). -## Building for SQLCipher +## SQLCipher (encrypted databases) -For instructions on building SQLCipher, see [Building SQLCipher for Node.js](https://coolaj86.com/articles/building-sqlcipher-for-node-js-on-raspberry-pi-2/). Alternatively, you can install it with your local package manager. - -To run against SQLCipher, you need to compile `sqlite3` from source by passing build options like: - -```bash -npm install sqlite3 --build-from-source --sqlite_libname=sqlcipher --sqlite=/usr/ -``` - -If your SQLCipher is installed in a custom location (if you compiled and installed it yourself), you'll need to set some environment variables: - -### On OS X with Homebrew - -Set the location where `brew` installed it: - -```bash -export LDFLAGS="-L`brew --prefix`/opt/sqlcipher/lib" -export CPPFLAGS="-I`brew --prefix`/opt/sqlcipher/include/sqlcipher" -npm install sqlite3 --build-from-source --sqlite_libname=sqlcipher --sqlite=`brew --prefix` -``` - -### On most Linuxes (including Raspberry Pi) - -Set the location where `make` installed it: - -```bash -export LDFLAGS="-L/usr/local/lib" -export CPPFLAGS="-I/usr/local/include -I/usr/local/include/sqlcipher" -export CXXFLAGS="$CPPFLAGS" -npm install sqlite3 --build-from-source --sqlite_libname=sqlcipher --sqlite=/usr/local --verbose -``` +SQLCipher is supported via a **source build** — no prebuild ships with +SQLCipher, because the encryption runtime must come from your system's +SQLCipher. Build flags, Homebrew/Linux paths and the Electron variant are +in [docs/security.md#sqlcipher](docs/security.md#sqlcipher). ### Custom builds and Electron @@ -684,6 +658,15 @@ In the case of macOS with Homebrew, the full command looks like: npm install sqlite3 --build-from-source --sqlite_libname=sqlcipher --sqlite=`brew --prefix` --runtime=electron --target=44.0.0 --dist-url=https://electronjs.org/headers ``` +# Security + +The security posture — what this package does and does not protect +against, the Node `--permission` interaction (and how the checks refuse +out-of-scope file access), the `untrusted: true` recipe for hostile +database files, extension-loading policy, and the vendored-SQLite CVE +policy — is documented in [docs/security.md](docs/security.md). +Vulnerability reporting is in [SECURITY.md](SECURITY.md). + # Testing ```bash diff --git a/SECURITY.md b/SECURITY.md new file mode 100644 index 0000000..5c9770c --- /dev/null +++ b/SECURITY.md @@ -0,0 +1,51 @@ +# Security policy + +## Reporting a vulnerability + +Report vulnerabilities privately to **cloud@appthreat.com** (the package +maintainers, Team AppThreat). Include: + +- a minimal reproducer (code and, where relevant, a database file), +- the affected versions — of this package **and** of the vendored SQLite + (`sqlite3.VERSION` reports it at runtime), +- the environment (Node/Electron version, OS and architecture, and + whether the build is a shipped prebuild or a source build). + +Please do not open public issues for unreported vulnerabilities. We aim +to respond within a week. + +## Scope + +This package embeds the SQLite amalgamation and exposes it to Node. A +report is in scope if it concerns: + +- the JavaScript layer (`lib/`) or the native addon (`src/`) of this + package, or +- a vulnerability in the vendored SQLite version that this package + ships, including its default build configuration (the compile-time + defines are in `deps/sqlite3.gyp`). + +Out of scope: vulnerabilities requiring the attacker to already control +executed SQL (SQL is trusted input — see +[docs/security.md](docs/security.md)), or already-allowed extension +loading, which is arbitrary code execution **by design**. + +## Vendored-SQLite CVE response + +The amalgamation is pinned (`deps/sqlite-amalgamation-3530400`, SQLite +3.53.4) and the package inherits its CVEs. When a SQLite CVE is +published: + +1. the maintainers assess whether the vulnerable code is reachable in + this package's build (the amalgamation is compiled with a specific + feature set — `deps/sqlite3.gyp` — which can exclude a vulnerable + feature entirely); +2. if reachable, the amalgamation is bumped to the fixed SQLite version + in a dedicated version bump (never folded silently into a feature + change), and a release ships with the CVE identifier in the notes; +3. the policy for reporting SQLite CVEs upstream is the SQLite project's + own process — this package does not adjudicate SQLite bugs, it tracks + releases. + +Check what you are running with `sqlite3.VERSION` and compare against +[SQLite's change log](https://sqlite.org/changes.html). diff --git a/bench/bench.js b/bench/bench.js index ef6559d..e2cc140 100644 --- a/bench/bench.js +++ b/bench/bench.js @@ -352,6 +352,22 @@ async function main() { }), ); + // --- Open/close path (Deliverable 11): every connection now goes + // through the Database wrapper in lib/sqlite3.js, whose + // permission-model gate costs one property read with the model off. + results.push( + await benchAsync('open+close: 1k :memory: connections', async () => { + for (let i = 0; i < 1000; i++) { + const conn = new sqlite3.Database(':memory:'); + await new Promise((resolve, reject) => { + conn.once('open', resolve); + conn.once('error', reject); + }); + await new Promise((resolve) => conn.close(resolve)); + } + }), + ); + // --- Promise-mode variants: the wrapper sits on the hot path of every // call, so its overhead is measured against the callback rows above. diff --git a/contrib/check-jsdoc.js b/contrib/check-jsdoc.js index bdd7302..465164f 100644 --- a/contrib/check-jsdoc.js +++ b/contrib/check-jsdoc.js @@ -139,6 +139,11 @@ for (const file of FILES) { const name = m[1]; const where = `${file} ${name} (line ${i + 1})`; if (name === 'constructor' || seen.has(name)) return; + // tsc's declaration emit synthesizes `_base` aliases for + // heritage clauses in the generated entry (e.g. DatabaseClass_base + // for `class DatabaseClass extends NativeDatabase`); there is no + // source-level doc comment they could carry. + if (name.endsWith('_base') && file === 'lib/sqlite3.d.ts') return; seen.add(name); const doc = docFor(lines, i); diff --git a/docs/security.md b/docs/security.md new file mode 100644 index 0000000..f5cb2de --- /dev/null +++ b/docs/security.md @@ -0,0 +1,231 @@ +# Security posture + +This document states what `@appthreat/sqlite3` does and does not protect +against. The headline, which holds for every mechanism below: + +> **Defence in depth, not a sandbox.** + +SQL given to `exec`/`run`/`prepare` is **trusted input**. If you execute +SQL from an untrusted source, no feature of this package makes that safe; +use the declarative authorizer (`db.authorizer()`) to constrain it, and +even then assume the authorizer is only as good as the policy installed. +The only complete injection defence is parameter binding — bind values, +never splice strings. + +## The Node permission model + +Node's `--permission` flag restricts the JavaScript `fs` layer. This +package's native layer calls `open(2)` directly, so without the v9 +checks a program run with `--permission --allow-addons` could read and +write **any file on the system** through a SQLite connection — Node's +permission checks never see it. This was verified by probe before the +checks were written: with `--allow-fs-read` limited to the app's own +code and no `--allow-fs-write` anywhere, an unpatched connection opened, +created and wrote a database file outside every grant. + +### What the package checks + +When the permission model is active (`process.permission` exists — under +Node 24 and 26 it exists only under `--permission`; there is no +`isEnabled()` method), every open path checks the target against the +process's allowances before the native open is scheduled: + +| Path | Checks | +|---|---| +| Read-only open (`OPEN_READONLY`) | `fs.read` for the file | +| Writable open (anything else) | `fs.read` + `fs.write` for the file, **and** `fs.write` for its directory — SQLite creates the `-journal`, `-wal` and `-shm` files beside the database, so a writable open that cannot write the directory cannot work. Grant it with `--allow-fs-write="/*"`, which covers the file and its sidecars. | +| `''` (private temporary database) | `fs.write` for the temp directory — `''` is a real on-disk database under `os.tmpdir()`, not a special in-memory name. | +| `ATTACH 'x' AS y` (SQL) | A native authorizer gate denies `SQLITE_ATTACH` unless the target is allowlisted via `configure('attachPaths', [...])`. `VACUUM INTO 'x'` fires the same internal `ATTACH` action, so one gate covers both SQL-level paths to the filesystem. | +| `db.backup('x')` | The destination (or source, in the full form) is opened natively; it is checked like a writable open. | +| `db.loadExtension(x)` | Refused unless allowlisted — see below. | +| `:memory:` | No filesystem; no checks. (The URI memory spellings count as in-memory only on a connection opened with `sqlite3.OPEN_URI`; without that flag SQLite reads `file:…` as an ordinary filename.) | + +A refusal is an `ERR_ACCESS_DENIED`-shaped error (`code`, `permission`, +`resource`) whose message names the path, the scope and a flag that +actually permits it. + +### Running under `--permission` + +- `--allow-addons` is required for the package to load at all — under + `--permission` without it, the addon is blocked before `dlopen`, which + is exactly what that flag governs. There is nothing to configure: if + you are reading this from inside the package, addons were allowed. +- The package's own code must be readable: grant `--allow-fs-read` over + the package directory (its `lib/` **and** `prebuilds/` — the loader + stats the prebuild directory through Node's fs). +- On **Linux**, add `--allow-fs-read=/etc/alpine-release`: the + `node-gyp-build` loader stats that file at module load to detect musl, + and under the permission model the denied stat crashes it before this + package's code runs (observed in the alpine container; the file need + only be readable, not present). +- `sqlite3.pool()` spawns workers: add `--allow-worker`. + +### The ATTACH gate + +`ATTACH` is SQL, not an open call, so the JS check cannot see it. The +gate is a pre-filter inside the native authorizer callback: while armed, +every `SQLITE_ATTACH` action is denied unless the target filename +matches the allowlist. Notes that matter: + +- **In-memory targets pass**: `':memory:'` always, and the URI forms + (`file::memory:`, `file:…?mode=memory`) only on a connection opened + with `sqlite3.OPEN_URI` — without that flag SQLite treats them as + ordinary filenames, so they are matched against the allowlist like any + other path. `''` never passes (it is temp-file-backed). +- **Matching is lexical**: the allowlist entry must match the filename + as written in the SQL (exact string, or cwd-joined for relative + targets; separators are normalised on Windows only, since `\` is an + ordinary filename character on POSIX). Symlinks are not resolved — a + differently-spelled target is denied. Fail-closed. +- `configure('attachPaths', [...])` permission-checks every entry at + declare time (a writable ATTACH needs the same grants as a writable + open; a `file:…?mode=ro` entry needs only `fs.read`). The ATTACH + statement must then use a spelling that matches the entry. +- The gate is separate from the declarative `db.authorizer()` policy: + installing or removing a policy does not remove the gate. Only + `configure('attachPaths', null)` disarms it. +- Connections opened `{ untrusted: true }` carry a deny-all gate that + `configure('attachPaths', …)` refuses to widen. + +### Extension loading + +`loadExtension` loads and executes an arbitrary shared library — the +same class of operation `--allow-addons` gates. Under the permission +model it is refused unless the exact path was declared: + +```js +db.configure('extensionPolicy', { allow: ['/abs/path/ext.so'] }); +await db.loadExtension('/abs/path/ext.so'); +``` + +Every allowlisted path must be `fs.read`-permitted. Without the +permission model the pre-v9 behaviour stands unless you configure a +policy; `{ deny: true }` disables loading **permanently** for the +connection (it cannot be re-enabled). + +The SQL function `load_extension()` is unreachable: on the vendored +SQLite 3.53.4 (verified by probe, not citation) it is off by default — +and in 3.53.4 `SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION` maps to the C-API +flag only, with a separate flag gating the SQL function — and the +package explicitly sets the C-API flag to 0 at open time (belt and +braces for source builds compiled with `SQLITE_ENABLE_LOAD_EXTENSION`). +`loadExtension()` re-enables the C API for the duration of its call and +disables it after. + +### What remains open, by name + +- **TOCTOU**: the checks run at the JS boundary; the actual `open(2)` + happens later on a worker thread. A file swapped between the two + (rename, symlink) is opened regardless. The permission model is not a + sandbox and the C library is outside it. +- **Loaded extensions**: anything in an allowlisted shared library runs + with the process's full privileges and can touch the filesystem + directly, including registering a VFS. Loading one is a deliberate + trust decision. +- **Lexical matching**: the ATTACH gate's allowlist is matched by + string, not by resolved inode; it fails closed (denies) on mismatch, + which can reject a legitimate target whose spelling differs. +- **The permission-model checks are per-open**: nothing re-checks on + `process.chdir()` (SQLite resolves relative names at open time; a + relative path re-checked later would use a different cwd). +- **Other processes**: every check gates this process's behaviour only. + +If the permission model is off, none of these mechanisms exist and the +package behaves exactly as it did before v9 — the checks cost one +property read. + +## Untrusted database files + +Opening an attacker-supplied SQLite file executes its schema (views, +triggers, CHECK constraints parse and can invoke functions); CVEs in +SQLite's file parsing have existed. The one-option recipe: + +```js +const db = await sqlite3.open(path, { + mode: sqlite3.OPEN_READONLY, + untrusted: true, +}); +``` + +applies: + +| Switch | Value | Why | +|---|---|---| +| `SQLITE_DBCONFIG_DEFENSIVE` | on | SQLite refuses out-of-band mutations (direct `sqlite_master` writes and similar). | +| `SQLITE_DBCONFIG_TRUSTED_SCHEMA` | off | Schema objects are treated as untrusted: dangerous constructs in a hostile schema are not honoured. | +| `SQLITE_DBCONFIG_WRITABLE_SCHEMA` | off | `PRAGMA writable_schema` becomes a no-op; the classic tamper (`UPDATE sqlite_master …`) hits SQLite's hard protection. On a plain connection that tamper succeeds — verified by probe; that contrast is the point of the option. | +| extension loading | permanently disabled | `loadExtension` refuses; `configure('extensionPolicy', …)` throws. | +| `SQLITE_LIMIT_LENGTH` | 64 MiB | bounds one hostile record/blob (default 1 GiB). | +| `SQLITE_LIMIT_SQL_LENGTH` | 1 MiB | bounds compiled SQL (default 1 GiB). | +| `SQLITE_LIMIT_EXPR_DEPTH` | 100 | bounds parser recursion (default 1000). | +| `SQLITE_LIMIT_VDBE_OP` | 25 000 | bounds one statement's program (default 250 M). | +| `SQLITE_LIMIT_ATTACHED` | 0 | no ATTACH at all, behind the deny-all authorizer gate. | + +This is one option standing in for a page of SQLite hardening lore; +it is still **not** a sandbox for hostile SQL you run deliberately — +use `db.authorizer()` for that. A malformed (non-database) file errors +gracefully with `SQLITE_NOTADB` rather than crashing. + +## `db.interrupt()` is connection-wide + +`interrupt()` aborts every in-flight statement on the connection; it is +not a resource limit and cannot target one query. For a cancellable +long query, use `db.cancellationToken()` (a flag polled in C, usable +from any thread) or the progress handler for cooperative scheduling — +see the README's concurrency documentation. + +## SQLCipher + +The package supports +[SQLCipher](https://github.com/sqlcipher/sqlcipher) (encrypted SQLite) +via a **source build** — no prebuild ships with SQLCipher, by design: +the encryption runtime must come from your system's SQLCipher, and a +prebuilt binary would link the vendored plain SQLite instead. + +Install SQLCipher with your package manager (`brew install sqlcipher`, +`apt install libsqlcipher-dev`, …) or build it yourself, then: + +```bash +npm install @appthreat/sqlite3 --build-from-source --sqlite_libname=sqlcipher --sqlite=/usr/ +``` + +Custom locations need the flags: + +```bash +# macOS (Homebrew) +export LDFLAGS="-L$(brew --prefix)/opt/sqlcipher/lib" +export CPPFLAGS="-I$(brew --prefix)/opt/sqlcipher/include/sqlcipher" +npm install @appthreat/sqlite3 --build-from-source \ + --sqlite_libname=sqlcipher --sqlite=$(brew --prefix) + +# Linux (source-installed under /usr/local) +export LDFLAGS="-L/usr/local/lib" +export CPPFLAGS="-I/usr/local/include -I/usr/local/include/sqlcipher" +export CXXFLAGS="$CPPFLAGS" +npm install @appthreat/sqlite3 --build-from-source \ + --sqlite_libname=sqlcipher --sqlite=/usr/local +``` + +For a SQLCipher source build against Electron headers, additionally pass +`--runtime=electron --target= --dist-url=https://electronjs.org/headers`. + +A CI job builds the package against SQLCipher on Linux so the option +does not silently rot (it runs post-merge and on demand, like the +packaged-ASAR job, so it is not a per-push gate). + +## Vendored SQLite and CVE policy + +The vendored amalgamation is pinned: `deps/sqlite-amalgamation-3530400` +(SQLite **3.53.4**, `sqlite_version%: '3530400'` in +`deps/common-sqlite.gypi`). The package therefore **inherits SQLite's +CVEs**: a vulnerability in the amalgamation is a vulnerability in every +build of this package until the amalgamation is bumped. Bumps are +deliberate, versioned changes (see `MIGRATING-TO-V9.md`) — they are not +folded into feature deliverables. If you need to know exactly what you +are running: `sqlite3.VERSION` and `sqlite3.VERSION_NUMBER` report the +vendored version at runtime. + +## Reporting + +See [SECURITY.md](../SECURITY.md) for how to report a vulnerability and +what to include. diff --git a/lib/native.d.ts b/lib/native.d.ts index 52818c7..837289b 100644 --- a/lib/native.d.ts +++ b/lib/native.d.ts @@ -113,6 +113,21 @@ export type Row = Record; */ export type IntegerMode = 'number' | 'bigint' | 'mixed'; +/** + * Options for `configure('extensionPolicy', …)`. + * + * @since 9.0.0 + */ +export type ExtensionPolicyOptions = { + /** + * The only paths `loadExtension` may load. Under the permission model + * each entry must also be fs.read-permitted. + */ + allow?: string[]; + /** Permanently disable `loadExtension` on this connection. */ + deny?: boolean; +}; + /** * The error delivered to callbacks, emitted on `'error'`, or thrown by * sync methods. Since 9.0.0 `code` is the extended result-code name @@ -224,6 +239,29 @@ export declare class Database extends EventEmitter { * @since 9.0.0 */ configure(option: 'integerMode', value: IntegerMode): this; + /** + * Configures the connection's extension-loading policy (a JS-layer + * option, enforced by the Database wrapper in lib/sqlite3.js). + * `{ allow: [...] }` restricts `loadExtension` to the listed paths; + * `{ deny: true }` disables it permanently for the connection. + * + * @param option `'extensionPolicy'` to set the extension policy. + * @param value the policy. + * @since 9.0.0 + */ + configure(option: 'extensionPolicy', value: ExtensionPolicyOptions): this; + /** + * Configures the ATTACH-gate allowlist (a JS-layer option, enforced + * by the native authorizer pre-filter). Every connection opened under + * the permission model starts with an empty (deny-all) gate; listing + * paths here allows `ATTACH`/`VACUUM INTO` for exactly those targets. + * `null` disarms a manually-armed gate. + * + * @param option `'attachPaths'` to set the allowed ATTACH targets. + * @param value the allowed absolute paths, or null to disarm. + * @since 9.0.0 + */ + configure(option: 'attachPaths', value: string[] | null): this; /** * Interrupts every in-flight and queued database operation from @@ -407,6 +445,20 @@ export declare class Database extends EventEmitter { * @returns this database, for chaining. */ _setAuthorizer(defaultDecision?: number, rules?: unknown[][]): this; + /** + * Arms or disarms the permission-model ATTACH gate: while armed, + * SQLITE_ATTACH actions (including VACUUM INTO's internal ATTACH) are + * denied unless the target filename matches the allowlist. In-memory + * targets always pass. Wrapped by lib/sqlite3.js, which + * permission-checks each allowlist entry first. + * + * @internal + * @param enabled whether the gate is armed. + * @param allowedPaths the allowlisted target paths (may be empty). + * @returns this database, for chaining. + * @since 9.0.0 + */ + _setAttachGate(enabled: boolean, allowedPaths: string[]): this; /** * Installs the cancellation-token progress handler (an Int32Array over * a SharedArrayBuffer polled every `period` VM instructions), or diff --git a/lib/promises.d.ts b/lib/promises.d.ts index 6d27612..78552b4 100644 --- a/lib/promises.d.ts +++ b/lib/promises.d.ts @@ -109,9 +109,11 @@ export type FetchCallback = (err: import("./native.js").SqliteError | null, rows /** * Opens a database and resolves once the connection is ready. The * `Database` constructor cannot return a promise; this is the - * promise-native form. `new Database(...)` is unchanged. + * promise-native form. `new Database(...)` is unchanged. The second + * argument is either open flags or a v9 options object (`mode`, + * `untrusted`). */ -export type OpenFunction = (filename: string, mode?: number) => Promise; +export type OpenFunction = (filename: string, modeOrOptions?: number | import("./sqlite3.js").OpenOptions) => Promise; export type Installed = { sqlite3: import("./sqlite3.js").sqlite3; Database: typeof import("./sqlite3-binding.js").Database; @@ -122,8 +124,8 @@ export type Installed = { * Records which database owns a statement, so AbortSignal handling can * reach `db.interrupt()` from a statement method. * - * @param {import('./sqlite3.js').Database} db the owning connection. + * @param {import('./sqlite3-binding.js').Database} db the owning connection. * @param {import('./sqlite3.js').Statement} statement the prepared statement. * @returns {import('./sqlite3.js').Statement} the statement, for inline use. */ -export function associateStatement(db: import("./sqlite3.js").Database, statement: import("./sqlite3.js").Statement): import("./sqlite3.js").Statement; +export function associateStatement(db: import("./sqlite3-binding.js").Database, statement: import("./sqlite3.js").Statement): import("./sqlite3.js").Statement; diff --git a/lib/promises.js b/lib/promises.js index f4f5fc8..5c3e97f 100644 --- a/lib/promises.js +++ b/lib/promises.js @@ -66,9 +66,11 @@ import { Readable, Writable } from 'node:stream'; /** * Opens a database and resolves once the connection is ready. The * `Database` constructor cannot return a promise; this is the - * promise-native form. `new Database(...)` is unchanged. + * promise-native form. `new Database(...)` is unchanged. The second + * argument is either open flags or a v9 options object (`mode`, + * `untrusted`). * - * @typedef {(filename: string, mode?: number) => Promise} OpenFunction + * @typedef {(filename: string, modeOrOptions?: number | import('./sqlite3.js').OpenOptions) => Promise} OpenFunction * @since 9.0.0 */ @@ -77,14 +79,14 @@ import { Readable, Writable } from 'node:stream'; // connection, so every JS-side statement creation point records the pair. // Statements created through `new sqlite3.Statement(db, sql)` directly are // not tracked: aborting those rejects without an interrupt. -/** @type {WeakMap} */ +/** @type {WeakMap} */ const statementDatabases = new WeakMap(); /** * Records which database owns a statement, so AbortSignal handling can * reach `db.interrupt()` from a statement method. * - * @param {import('./sqlite3.js').Database} db the owning connection. + * @param {import('./sqlite3-binding.js').Database} db the owning connection. * @param {import('./sqlite3.js').Statement} statement the prepared statement. * @returns {import('./sqlite3.js').Statement} the statement, for inline use. */ @@ -240,7 +242,9 @@ function dualMode(core, options = {}) { // the one being awaited. That is a SQLite constraint. const db = isStatement ? statementDatabases.get(/** @type {object} */ (self)) - : /** @type {import('./sqlite3.js').Database} */ (self); + : /** @type {import('./sqlite3-binding.js').Database} */ ( + self + ); try { db?.interrupt(); } catch { @@ -791,8 +795,8 @@ const TRANSACTION_MODES = new Set(['deferred', 'immediate', 'exclusive']); * ROLLBACK on failure, savepoints when nested, and connection-wide * interruption on abort. * - * @param {import('./sqlite3.js').Database} db the connection. - * @param {(tx: import('./sqlite3.js').Database) => unknown} fn the body. + * @param {import('./sqlite3-binding.js').Database} db the connection. + * @param {(tx: import('./sqlite3-binding.js').Database) => unknown} fn the body. * @param {{ mode: string, savepoint: boolean, serialize: boolean, signal?: AbortSignal }} opts * the validated options. * @returns {Promise} whatever the body resolves to. @@ -1089,18 +1093,27 @@ function install( * Opens a database and resolves once the connection is ready. * * The `Database` constructor cannot return a promise; this is the - * promise-native form. `new Database(...)` is unchanged. + * promise-native form. `new Database(...)` is unchanged. The second + * argument is either open flags or a v9 options object (with `mode` + * and `untrusted`). * * @param {string} filename the database file (or `:memory:` / `''`). - * @param {number} [mode] open flags, e.g. `sqlite3.OPEN_READWRITE`. - * @returns {Promise} the opened database. + * @param {number | import('./sqlite3.js').OpenOptions} [modeOrOptions] + * open flags, e.g. `sqlite3.OPEN_READWRITE`, or + * `{ mode, untrusted }`. + * @returns {Promise} the opened database. * @since 9.0.0 * @example * const db = await sqlite3.open('app.db', sqlite3.OPEN_READWRITE); + * @example + * const hostile = await sqlite3.open('downloaded.db', { + * mode: sqlite3.OPEN_READONLY, + * untrusted: true, + * }); */ - sqlite3.open = function open(filename, mode) { + sqlite3.open = function open(filename, modeOrOptions) { return new Promise((resolve, reject) => { - /** @type {import('./sqlite3.js').Database} */ + /** @type {import('./sqlite3-binding.js').Database} */ let db; try { /** @@ -1111,13 +1124,13 @@ function install( else resolve(db); }; const OpenCtor = - /** @type {new (filename: string, ...rest: unknown[]) => import('./sqlite3.js').Database} */ ( + /** @type {new (filename: string, ...rest: unknown[]) => import('./sqlite3-binding.js').Database} */ ( /** @type {unknown} */ (Database) ); db = - mode === undefined + modeOrOptions === undefined || modeOrOptions === null ? new OpenCtor(filename, onOpen) - : new OpenCtor(filename, mode, onOpen); + : new OpenCtor(filename, modeOrOptions, onOpen); } catch (err) { reject(err); } @@ -1204,7 +1217,7 @@ function install( * strict FIFO ordering for the duration (at the cost of bypassing the * statement cache). * - * @param {(tx: import('./sqlite3.js').Database) => unknown} fn the transaction body, receives `(tx)`. + * @param {(tx: import('./sqlite3-binding.js').Database) => unknown} fn the transaction body, receives `(tx)`. * @param {object} [options] * @param {'deferred' | 'immediate' | 'exclusive'} [options.mode='deferred'] * @param {boolean} [options.savepoint=false] force SAVEPOINT even at @@ -1239,7 +1252,7 @@ function install( } return runTransaction( this, - /** @type {(tx: import('./sqlite3.js').Database) => unknown} */ ( + /** @type {(tx: import('./sqlite3-binding.js').Database) => unknown} */ ( fn ), { diff --git a/lib/sqlite3.d.ts b/lib/sqlite3.d.ts index 59094e3..c5410e9 100644 --- a/lib/sqlite3.d.ts +++ b/lib/sqlite3.d.ts @@ -7,6 +7,7 @@ // The three shipped .d.ts files together form the public types. export default sqlite3; +export { DatabaseClass as Database }; /** * A native class (Database, Statement or Backup) before the EventEmitter * prototype is copied onto it. @@ -28,21 +29,107 @@ export type CachedRegistry = { */ objects: Record; }; +/** + * The constructor type of the v9 `Database` wrapper: every pre-v9 + * positional form plus the {@link OpenOptions} object forms. Declared + * explicitly (rather than as `typeof` the class) so the namespace typedef + * below does not reference the module it lives in — that self-reference + * is a type-resolution cycle. + */ +export type DatabaseConstructor = new (filename: string, a?: number | OpenOptions | ((this: import("./sqlite3-binding.js").Database, err: import("./native.js").SqliteError | null) => void), b?: ((this: import("./sqlite3-binding.js").Database, err: import("./native.js").SqliteError | null) => void) | OpenOptions) => import("./sqlite3-binding.js").Database; /** * The public `sqlite3` namespace object the package exports as its * default: the native binding (the five classes and every SQLite * constant with its literal value) plus the JS-layer `verbose`, - * `cached`, `open`, `deserializeFromBytes` and `pool`. + * `cached`, `open`, `deserializeFromBytes` and `pool`. `Database` is the + * v9 wrapper constructor (a real subclass of the native class) so the + * {@link OpenOptions} constructor forms typecheck; instances satisfy the + * native type everywhere. */ export type sqlite3 = import("./sqlite3-binding.js").NativeBinding & { + Database: DatabaseConstructor; verbose: () => sqlite3; cached: CachedRegistry; open: import("./promises.js").OpenFunction; deserializeFromBytes: (bytes: Uint8Array | ArrayBuffer | DataView, options?: import("./native.js").DeserializeOptions) => Promise; pool: typeof import("./pool.js").pool; }; +export type ExtensionPolicy = { + /** + * the connection was opened `{ untrusted: true }`. + */ + untrusted: boolean; + /** + * `configure('extensionPolicy', { deny: true })` was applied. + */ + permadeny: boolean; + /** + * an explicit policy was applied; its allowlist then governs + * even when the permission model is off. + */ + configured: boolean; + /** + * allowed extension paths (as written). + */ + allow: Set; +}; +/** + * Options for opening a database (v9). Accepted anywhere a mode number + * could appear in the `Database` constructor and in `sqlite3.open`'s + * second argument. + */ +export type OpenOptions = { + /** + * open flags, e.g. `sqlite3.OPEN_READWRITE`. + */ + mode?: number | undefined; + /** + * harden the connection for an + * attacker-supplied database file: defensive mode, untrusted schema, + * writable_schema off, extension loading permanently disabled, + * conservative run-time limits and a deny-all ATTACH gate. See + * docs/security.md#untrusted-database-files. + */ + untrusted?: boolean | undefined; +}; declare const sqlite3: sqlite3; -export { Backup, Blob, Database, Session, Statement } from "./sqlite3-binding.js"; +declare const DatabaseClass_base: typeof import("./native.js").Database & DatabaseConstructor; +/** + * A connection to a SQLite database — the v9 wrapper around the native + * class. Adds the permission-model checks on every open path, the + * {@link OpenOptions} forms, the `extensionPolicy`/`attachPaths` + * configure options and the guarded `loadExtension`/`backup`; everything + * else, including all pre-v9 positional constructor forms, behaves + * exactly as before. + * + * @extends {NativeDatabase} + * @since 9.0.0 + */ +declare class DatabaseClass extends DatabaseClass_base { + /** + * Opens a database connection. The open itself is asynchronous; the + * callback fires (or the `'open'` event emits) once it completes. + * + * Under Node's permission model (`--permission`), the target is + * checked against the process's fs allowances before anything is + * opened: a read-only open needs `fs.read` for the file; a writable + * open additionally needs `fs.write` for the file **and its + * directory** (SQLite writes `-journal`/`-wal`/`-shm` files beside + * it). A refusal names the path and the flag that permits it. + * + * @param {string} filename path to the database file, `:memory:`, `''` + * or (with `OPEN_URI`) a `file:` URI. + * @param {number | OpenOptions | ((this: import('./sqlite3-binding.js').Database, err: import('./native.js').SqliteError | null) => void)} [a] + * open flags, an options object, or the callback. + * @param {((this: import('./sqlite3-binding.js').Database, err: import('./native.js').SqliteError | null) => void) | OpenOptions} [b] + * the callback (after a mode), or the options object. + * @throws {Error} ERR_ACCESS_DENIED under the permission model when + * the target is not permitted, naming the path and the remedy. + * @throws {TypeError} when the arguments are malformed. + */ + constructor(filename: string, a?: number | OpenOptions | ((this: import("./sqlite3-binding.js").Database, err: import("./native.js").SqliteError | null) => void), b?: ((this: import("./sqlite3-binding.js").Database, err: import("./native.js").SqliteError | null) => void) | OpenOptions); +} +export { Backup, Blob, Session, Statement } from "./sqlite3-binding.js"; import './augment.js'; export type { FetchCallback, @@ -75,6 +162,7 @@ export type { ColumnMetadata, DatabaseState, DeserializeOptions, + ExtensionPolicyOptions, FunctionOptions, IntegerMode, NativeBinding, diff --git a/lib/sqlite3.js b/lib/sqlite3.js index 46f1ab8..afd282c 100644 --- a/lib/sqlite3.js +++ b/lib/sqlite3.js @@ -10,6 +10,7 @@ // and emitted into the generated lib/sqlite3.d.ts. import { EventEmitter } from 'node:events'; +import os from 'node:os'; import path from 'node:path'; import { pool } from './pool.js'; @@ -38,13 +39,28 @@ import { extendTrace } from './trace.js'; * @property {Record} objects The registry itself, keyed by resolved path. */ +/** + * The constructor type of the v9 `Database` wrapper: every pre-v9 + * positional form plus the {@link OpenOptions} object forms. Declared + * explicitly (rather than as `typeof` the class) so the namespace typedef + * below does not reference the module it lives in — that self-reference + * is a type-resolution cycle. + * + * @typedef {new (filename: string, a?: number | OpenOptions | ((this: import('./sqlite3-binding.js').Database, err: import('./native.js').SqliteError | null) => void), b?: ((this: import('./sqlite3-binding.js').Database, err: import('./native.js').SqliteError | null) => void) | OpenOptions) => import('./sqlite3-binding.js').Database} DatabaseConstructor + * @since 9.0.0 + */ + /** * The public `sqlite3` namespace object the package exports as its * default: the native binding (the five classes and every SQLite * constant with its literal value) plus the JS-layer `verbose`, - * `cached`, `open`, `deserializeFromBytes` and `pool`. + * `cached`, `open`, `deserializeFromBytes` and `pool`. `Database` is the + * v9 wrapper constructor (a real subclass of the native class) so the + * {@link OpenOptions} constructor forms typecheck; instances satisfy the + * native type everywhere. * * @typedef {import('./sqlite3-binding.js').NativeBinding & { + * Database: DatabaseConstructor, * verbose: () => sqlite3, * cached: CachedRegistry, * open: import('./promises.js').OpenFunction, @@ -55,7 +71,7 @@ import { extendTrace } from './trace.js'; const sqlite3 = /** @type {sqlite3} */ (/** @type {unknown} */ (binding)); -const { Database, Statement, Backup, Session, Blob } = sqlite3; +const { Database: NativeDatabase, Statement, Backup, Session, Blob } = sqlite3; /** * Copies `source`'s prototype onto `target`, giving the native classes @@ -70,12 +86,835 @@ function inherits(target, source) { Object.assign(target.prototype, source.prototype); } -inherits(Database, EventEmitter); +inherits(NativeDatabase, EventEmitter); inherits(Statement, EventEmitter); inherits(Backup, EventEmitter); inherits(Session, EventEmitter); inherits(Blob, EventEmitter); +// --- Node permission model, extension policy, untrusted files (D11) ----- +// +// Node's --permission model restricts the JS fs layer; this package's C +// layer calls open(2) directly, so without these checks a program run with +// --permission --allow-fs-read=/data could read and write any file on the +// system through a SQLite connection (proven by probe, see +// docs/security.md). The checks below run at the JS boundary every open +// path goes through. This is defence in depth, not a sandbox: SQL that +// reaches the filesystem through channels the checks and the ATTACH gate +// do not cover (an unrestricted custom authorizer, a VFS extension) can +// still touch it — docs/security.md names what remains open. + +/** + * True when Node's permission model is active for this process (or worker + * environment). `process.permission` exists only under `--permission` on + * every supported Node (observed on 24 and 26; there is no `isEnabled` + * method — it was removed before Node 24), so its presence is the gate + * and the cost when the model is off is one property read. + * + * @returns {boolean} whether the permission model is active. + * @private + */ +function permissionModelActive() { + return typeof process.permission?.has === 'function'; +} + +/** + * Builds the refusal error for a permission-model denial: Node's own + * `ERR_ACCESS_DENIED` shape (code plus `permission` and `resource` + * properties) with a message that names the path, the scope and a remedy + * that actually works. + * + * @param {'FileSystemRead' | 'FileSystemWrite'} permission the denied scope. + * @param {string} resource the path that was denied. + * @param {string} detail what the operation needed and why. + * @returns {Error} the ERR_ACCESS_DENIED-shaped error. + * @private + */ +function accessDenied(permission, resource, detail) { + const flag = + permission === 'FileSystemRead' + ? '--allow-fs-read' + : '--allow-fs-write'; + const err = new Error( + `${detail} The Node permission model denies ${permission === 'FileSystemRead' ? 'fs.read' : 'fs.write'} for ${resource}; start Node with ${flag} to permit it (or drop --permission).`, + ); + /** @type {any} */ (err).code = 'ERR_ACCESS_DENIED'; + /** @type {any} */ (err).permission = permission; + /** @type {any} */ (err).resource = resource; + return err; +} + +/** + * Parses a SQLite URI filename (`file:` prefix, only interpreted when the + * open used `OPEN_URI`) using SQLite's own grammar — the WHATWG `URL` + * parser is wrong here: it turns the relative `file:foo.db` into the + * root-absolute `/foo.db`. + * + * Refuses URI forms this package cannot map to a checkable path, rather + * than passing them through: an unparsed URI would reach `open(2)` + * unchecked, which is exactly the hole the checks exist to close. + * + * @param {string} uri the `file:` URI. + * @returns {{ memory: true } | { memory: false, path: string, readonly: boolean }} + * the parsed target: in-memory, or a path with its write mode. + * @throws {Error} ERR_ACCESS_DENIED for URI forms that cannot be checked. + * @private + */ +function parseSqliteUri(uri) { + /** + * @param {string} why the reason the URI cannot be checked. + * @returns {never} + */ + const refuse = (why) => { + throw accessDenied( + 'FileSystemRead', + uri, + `Cannot check ${why} against the permission model; this package refuses file: URIs it cannot parse rather than opening them unchecked.`, + ); + }; + if (!/^file:/i.test(uri)) refuse('a URI without a file: scheme'); + let rest = uri.slice(5); + if (rest.startsWith('//')) { + const end = rest.search(/[/?]/); + const authority = end === -1 ? rest.slice(2) : rest.slice(2, end); + if (end !== -1) rest = rest.slice(end); + if (authority && authority.toLowerCase() !== 'localhost') { + refuse(`the non-local URI authority '${authority}'`); + } + } + let query = ''; + const q = rest.indexOf('?'); + if (q !== -1) { + query = rest.slice(q + 1); + rest = rest.slice(0, q); + } + let target = ''; + try { + target = decodeURIComponent(rest); + } catch { + refuse('a URI path with invalid percent-escapes'); + } + if (target === '') refuse('a URI with an empty path'); + const params = new URLSearchParams(query); + const mode = params.get('mode'); + if (target === ':memory:' || mode === 'memory') { + return { memory: true }; + } + if (mode !== null && mode !== 'ro' && mode !== 'rw' && mode !== 'rwc') { + refuse(`the URI mode parameter '${mode}'`); + } + return { + memory: false, + path: target, + readonly: mode === 'ro' || params.get('immutable') === '1', + }; +} + +/** + * Requires fs.read permission for one path under the permission model. + * + * @param {string} abs the absolute path to check. + * @param {string} what the operation being checked, for the message. + * @returns {void} + * @throws {Error} ERR_ACCESS_DENIED naming the path and the remedy. + * @private + */ +function requireReadPermission(abs, what) { + if (process.permission?.has('fs.read', abs)) return; + throw accessDenied( + 'FileSystemRead', + abs, + `${what} requires reading ${abs}.`, + ); +} + +/** + * Requires fs.write permission for one path. A directory granted either + * exactly (`--allow-fs-write=/data`) or by wildcard (`--allow-fs-write=/data/*`) + * satisfies the check; an exact-file grant does not extend to a directory. + * + * @param {string} abs the absolute path to check. + * @param {string} what the operation being checked, for the message. + * @returns {void} + * @throws {Error} ERR_ACCESS_DENIED naming the path and the remedy. + * @private + */ +function requireWritePermission(abs, what) { + const permission = process.permission; + if (typeof permission?.has !== 'function') return; + // Called on the object, not through a detached reference: whether + // `has` happens to ignore its receiver is an implementation detail, + // and this is a security check. + if ( + permission.has('fs.write', abs) || + permission.has('fs.write', path.join(abs, '*')) + ) { + return; + } + throw accessDenied( + 'FileSystemWrite', + abs, + `${what} requires writing ${abs}.`, + ); +} + +/** + * Checks one database-file open (the flags a writable open needs on the + * containing directory are why the directory is checked too: SQLite + * creates the -journal/-wal/-shm sidecar files beside the database). + * + * @param {string} abs the absolute database path. + * @param {string} who 'Opening' or the backup role, for messages. + * @returns {void} + * @throws {Error} ERR_ACCESS_DENIED naming what failed. + * @private + */ +function checkDatabaseFileOpen(abs, who) { + requireReadPermission(abs, `${who} ${abs}`); + requireWritePermission(abs, `${who} ${abs}`); + const dir = path.dirname(abs); + if ( + !process.permission?.has('fs.write', dir) && + !process.permission?.has('fs.write', path.join(dir, '*')) + ) { + throw accessDenied( + 'FileSystemWrite', + dir, + `${who} ${abs} also requires writing the directory ${dir}: a writable SQLite database creates its -journal, -wal and -shm files beside it. Grant the directory with the wildcard form (--allow-fs-write="${dir}${path.sep}*"), which covers the database file and its sidecar files.`, + ); + } +} + +/** + * Enforces the permission model for one `Database` open. Every open path + * (the constructor, `sqlite3.open`, the cached registry, pool workers) + * goes through the `Database` wrapper below, which calls this before the + * native open is scheduled. No-op — one property read — when the model is + * off. + * + * @param {string} filename the filename as passed. + * @param {number | undefined} mode the open mode as passed (undefined is + * the native default: read-write create). + * @returns {void} + * @throws {Error} ERR_ACCESS_DENIED naming the path, the scope and a + * working remedy. + * @private + */ +function assertOpenPermitted(filename, mode) { + if (!permissionModelActive()) return; + if (typeof filename !== 'string') return; // the native TypeError is better + if (filename === ':memory:') return; + const effective = + typeof mode === 'number' && Number.isInteger(mode) + ? mode + : sqlite3.OPEN_READWRITE | sqlite3.OPEN_CREATE; + /** @type {string} */ + let target = filename; + let writable = (effective & sqlite3.OPEN_READONLY) === 0; + if (effective & sqlite3.OPEN_URI) { + const parsed = parseSqliteUri(filename); + if (parsed.memory) return; + target = parsed.path; + if (parsed.readonly) writable = false; + } + if (target === '') { + // '' is SQLite's private temporary database: a real file under the + // temp directory, created and written by SQLite itself. + requireWritePermission( + os.tmpdir(), + "Opening '' (SQLite creates a private temporary database under the temp directory)", + ); + return; + } + const abs = path.resolve(target); + if (writable) { + checkDatabaseFileOpen(abs, 'Opening'); + } else { + requireReadPermission(abs, `Opening ${abs} read-only`); + } +} + +// --- Extension loading policy (Deliverable 11 §2.2) ------------------------ +// +// loadExtension loads and executes an arbitrary shared library — the same +// class of operation --allow-addons gates. Under the permission model it +// is refused unless explicitly allowlisted; a `{ deny: true }` policy +// disables it permanently on the connection. The policy is JS-layer state +// (the native entry point is refused before anything is scheduled), and +// the SQL load_extension() function is unreachable: it is off by default +// in the vendored SQLite (probed — see the note in src/database.cc) and +// loadExtension re-disables the C-API gate after every call. + +/** + * @typedef {object} ExtensionPolicy + * @property {boolean} untrusted the connection was opened `{ untrusted: true }`. + * @property {boolean} permadeny `configure('extensionPolicy', { deny: true })` was applied. + * @property {boolean} configured an explicit policy was applied; its allowlist then governs + * even when the permission model is off. + * @property {Set} allow allowed extension paths (as written). + * @private + */ + +/** @type {WeakMap} */ +const extensionPolicies = new WeakMap(); + +/** + * Reads (creating on first use) a connection's extension policy. + * + * @param {import('./sqlite3-binding.js').Database} db the connection. + * @returns {ExtensionPolicy} the policy record. + * @private + */ +function extensionPolicyFor(db) { + let policy = extensionPolicies.get(db); + if (policy === undefined) { + policy = { + untrusted: false, + permadeny: false, + configured: false, + allow: new Set(), + }; + extensionPolicies.set(db, policy); + } + return policy; +} + +/** + * Applies a `configure('extensionPolicy', …)` request. + * + * @param {import('./sqlite3-binding.js').Database} db the connection. + * @param {unknown} spec `{ allow: [...] }` or `{ deny: true }`. + * @returns {void} + * @throws {TypeError} when the policy is malformed or the connection is + * hardened past extension loading. + * @private + */ +function applyExtensionPolicy(db, spec) { + const policy = extensionPolicyFor(db); + if (policy.permadeny) { + throw new TypeError( + "loadExtension is permanently disabled on this connection: an earlier configure('extensionPolicy', { deny: true }) cannot be reversed", + ); + } + if (spec === null || typeof spec !== 'object' || Array.isArray(spec)) { + throw new TypeError( + "configure('extensionPolicy') requires an options object", + ); + } + const known = new Set(['allow', 'deny']); + for (const key of Object.keys(spec)) { + if (!known.has(key)) { + throw new TypeError( + `extensionPolicy received unknown option '${key}'`, + ); + } + } + const deny = /** @type {Record} */ (spec).deny; + if (deny !== undefined && typeof deny !== 'boolean') { + throw new TypeError("extensionPolicy option 'deny' must be a boolean"); + } + if (deny === true) { + policy.permadeny = true; + policy.configured = true; + policy.allow.clear(); + return; + } + const allow = /** @type {Record} */ (spec).allow; + if (allow === undefined) { + throw new TypeError( + "extensionPolicy requires 'allow' (an array of paths) or 'deny: true'", + ); + } + if (!Array.isArray(allow)) { + throw new TypeError( + "extensionPolicy option 'allow' must be an array of paths", + ); + } + const entries = allow.map((entry, i) => { + if (typeof entry !== 'string' || entry.length === 0) { + throw new TypeError( + `extensionPolicy allow[${i}] must be a non-empty string path`, + ); + } + return entry; + }); + if (permissionModelActive()) { + // Loading a shared library reads (and executes) it: every allowed + // path must at least be readable under the permission model, + // checked here — at declare time — because this is the only point + // where JavaScript runs. + for (const entry of entries) { + requireReadPermission( + path.resolve(entry), + `Allowing the extension ${entry} for loadExtension`, + ); + } + } + policy.allow = new Set(entries); + policy.configured = true; +} + +/** + * Refuses or admits one loadExtension call under the active policies. + * + * @param {import('./sqlite3-binding.js').Database} db the connection. + * @param {unknown} filename the extension path as passed. + * @returns {void} + * @throws {Error} ERR_ACCESS_DENIED or TypeError when the call is refused. + * @private + */ +function assertExtensionAllowed(db, filename) { + const policy = extensionPolicyFor(db); + if (policy.permadeny) { + throw new Error( + 'loadExtension is disabled on this connection by its extension policy ({ deny: true } was applied, or it was opened { untrusted: true })', + ); + } + // An explicit allowlist governs in both modes; with no policy at all, + // only the permission model refuses (the pre-v9 behaviour is kept + // when the model is off). + if (!policy.configured && !permissionModelActive()) return; + if (typeof filename !== 'string') return; // the native TypeError is better + const matches = + policy.allow.has(filename) || policy.allow.has(path.resolve(filename)); + if (matches) return; + if (!permissionModelActive()) { + throw new Error( + `loadExtension is refused: the extension policy configured on this connection permits only its allowlisted paths. Add ${JSON.stringify(filename)} with db.configure('extensionPolicy', { allow: [...] }).`, + ); + } + throw accessDenied( + 'FileSystemRead', + filename, + `Loading the extension ${filename} executes native code, which the Node permission model gates: loading shared libraries is what --allow-addons governs. To load this extension, declare it explicitly with db.configure('extensionPolicy', { allow: [${JSON.stringify(path.resolve(filename))}] }) and grant its path fs.read.`, + ); +} + +// --- ATTACH gate wiring (Deliverable 11 §2.1) ------------------------------- +// +// `ATTACH DATABASE '...' AS x` and `VACUUM INTO '...'` (which SQLite +// implements through an internal ATTACH) reach open(2) from SQL, where no +// JS check can run. The native `_setAttachGate` arms an authorizer +// pre-filter that denies SQLITE_ATTACH unless the target matches an +// allowlist; the allowlist is permission-checked here, at declare time, +// for the same reason as the extension policy. When the permission model +// is active every connection gets an empty (deny-all) gate at open. + +/** + * Applies a `configure('attachPaths', …)` request. + * + * @param {import('./sqlite3-binding.js').Database} db the connection. + * @param {unknown} value an array of allowed target paths, or null to + * disarm the gate. + * @returns {void} + * @throws {TypeError | Error} when the list is malformed, a path is not + * permitted, or the connection is untrusted. + * @private + */ +function applyAttachPaths(db, value) { + const policy = extensionPolicyFor(db); + if (policy.untrusted) { + throw new TypeError( + 'untrusted connections cannot allow ATTACH: they were opened with the deny-all gate as part of their hardening', + ); + } + if (value === null || value === undefined) { + /** @type {(...args: unknown[]) => unknown} */ ( + /** @type {unknown} */ (db._setAttachGate) + ).call(db, false, []); + return; + } + if (!Array.isArray(value)) { + throw new TypeError( + "configure('attachPaths') requires an array of paths, or null to disarm the gate", + ); + } + const entries = value.map((entry, i) => { + if (typeof entry !== 'string' || entry.length === 0) { + throw new TypeError( + `attachPaths[${i}] must be a non-empty string path`, + ); + } + return entry; + }); + if (permissionModelActive()) { + for (const entry of entries) { + // ATTACH opens its target read-write-create by default, so the + // checks match a writable open of the same path. A read-only + // URI (file:...?mode=ro / immutable=1) needs only fs.read. + if (/^file:/i.test(entry)) { + const parsed = parseSqliteUri(entry); + if (parsed.memory) continue; + requireReadPermission( + path.resolve(parsed.path), + `Allowing ATTACH of ${entry}`, + ); + if (!parsed.readonly) { + checkDatabaseFileOpen( + path.resolve(parsed.path), + `Allowing ATTACH of ${entry}`, + ); + } + } else { + checkDatabaseFileOpen( + path.resolve(entry), + `Allowing ATTACH of ${entry}`, + ); + } + } + } + /** @type {(...args: unknown[]) => unknown} */ ( + /** @type {unknown} */ (db._setAttachGate) + ).call(db, true, entries); +} + +// --- Untrusted database files (Deliverable 11 §2.3) ------------------------- + +// One option flag standing in for a page of SQLite hardening lore. The +// values are deliberately conservative and documented in +// docs/security.md; they are applied as queued configuration before any +// user work can run (the open is FIFO-ahead of them). +/** @type {Array<[number, number]>} */ +const UNTRUSTED_LIMITS = [ + // LIMIT_LENGTH: one string, BLOB, table or row budget (SQLite default + // 1 GiB). 64 MiB bounds a hostile record without clipping real ones. + [sqlite3.LIMIT_LENGTH, 64 * 1024 * 1024], + // LIMIT_SQL_LENGTH: largest compiled statement (default 1 GiB). + [sqlite3.LIMIT_SQL_LENGTH, 1024 * 1024], + // LIMIT_EXPR_DEPTH: parser recursion per expression (default 1000). + [sqlite3.LIMIT_EXPR_DEPTH, 100], + // LIMIT_VDBE_OP: opcodes per prepared statement (default 250M). + [sqlite3.LIMIT_VDBE_OP, 25000], + // LIMIT_ATTACHED: no ATTACH at all, behind the deny-all gate. + [sqlite3.LIMIT_ATTACHED, 0], +]; + +/** + * Applies the untrusted-file hardening to a freshly constructed + * connection. Runs immediately after `super()` in the wrapper: every call + * below schedules onto the connection queue behind the still-pending + * open, so the hardening is in place before any user work runs, with no + * window in between (the queue is FIFO and the open has not completed). + * + * @param {import('./sqlite3-binding.js').Database} db the connection. + * @returns {void} + * @private + */ +function applyUntrustedHardening(db) { + const policy = extensionPolicyFor(db); + policy.untrusted = true; + policy.permadeny = true; + // Defensive mode + distrust the schema + writable_schema off: the + // three switches that stop a hostile file's schema (views, triggers, + // CHECK constraints) from invoking dangerous built-ins or from + // rewriting sqlite_schema. _dbConfig is the native core; the JS + // dbConfig() wrapper is dual-mode and would return promises here. + const dbConfig = /** @type {(...args: unknown[]) => unknown} */ ( + /** @type {unknown} */ (db._dbConfig) + ); + /** + * The hardening verbs cannot realistically fail, but a failure must + * surface somewhere: route it to the connection's 'error' event + * rather than letting it vanish into a fire-and-forget call. + * + * @param {import('./native.js').SqliteError | null} err + */ + const onHardeningError = (err) => { + if (err) db.emit('error', err); + }; + dbConfig.call(db, sqlite3.DBCONFIG_DEFENSIVE, 1, onHardeningError); + dbConfig.call(db, sqlite3.DBCONFIG_TRUSTED_SCHEMA, 0, onHardeningError); + dbConfig.call(db, sqlite3.DBCONFIG_WRITABLE_SCHEMA, 0, onHardeningError); + // Resource ceilings and the deny-ATTACH authorizer gate. + for (const [id, value] of UNTRUSTED_LIMITS) { + db.configure('limit', id, value); + } + /** @type {(...args: unknown[]) => unknown} */ ( + /** @type {unknown} */ (db._setAttachGate) + ).call(db, true, []); +} + +// --- The Database wrapper ---------------------------------------------------- +// +// Every connection goes through this wrapper (the namespace rebind below +// points sqlite3.Database, sqlite3.open, the cached registry and the pool +// workers at it). It runs the permission-model checks before the native +// open is scheduled, accepts the v9 open options, and applies the +// untrusted hardening. Instances are indistinguishable from native ones: +// instanceof holds in both directions and every prototype method — the +// ones below and the promise layer — applies unchanged. + +/** + * Options for opening a database (v9). Accepted anywhere a mode number + * could appear in the `Database` constructor and in `sqlite3.open`'s + * second argument. + * + * @typedef {object} OpenOptions + * @property {number} [mode] open flags, e.g. `sqlite3.OPEN_READWRITE`. + * @property {boolean} [untrusted] harden the connection for an + * attacker-supplied database file: defensive mode, untrusted schema, + * writable_schema off, extension loading permanently disabled, + * conservative run-time limits and a deny-all ATTACH gate. See + * docs/security.md#untrusted-database-files. + * @since 9.0.0 + */ + +// Captured before the wrapper patches anything: the native halves the +// wrappers below delegate to. +const nativeConfigure = /** @type {(...args: unknown[]) => unknown} */ ( + /** @type {unknown} */ (NativeDatabase.prototype.configure) +); +const nativeLoadExtension = /** @type {(...args: unknown[]) => unknown} */ ( + /** @type {unknown} */ (NativeDatabase.prototype.loadExtension) +); + +/** + * True for a v9 open-options object (every own key is one of the known + * option keys), used to pick the options argument out of the constructor's + * legacy positional shapes. + * + * @param {unknown} value the candidate. + * @returns {boolean} whether it is an options object. + * @private + */ +function isOpenOptions(value) { + if (value === null || typeof value !== 'object' || Array.isArray(value)) { + return false; + } + const keys = Object.keys(value); + return ( + keys.length > 0 && + keys.every((key) => key === 'mode' || key === 'untrusted') + ); +} + +/** + * A connection to a SQLite database — the v9 wrapper around the native + * class. Adds the permission-model checks on every open path, the + * {@link OpenOptions} forms, the `extensionPolicy`/`attachPaths` + * configure options and the guarded `loadExtension`/`backup`; everything + * else, including all pre-v9 positional constructor forms, behaves + * exactly as before. + * + * @extends {NativeDatabase} + * @since 9.0.0 + */ +class DatabaseClass extends NativeDatabase { + /** + * Opens a database connection. The open itself is asynchronous; the + * callback fires (or the `'open'` event emits) once it completes. + * + * Under Node's permission model (`--permission`), the target is + * checked against the process's fs allowances before anything is + * opened: a read-only open needs `fs.read` for the file; a writable + * open additionally needs `fs.write` for the file **and its + * directory** (SQLite writes `-journal`/`-wal`/`-shm` files beside + * it). A refusal names the path and the flag that permits it. + * + * @param {string} filename path to the database file, `:memory:`, `''` + * or (with `OPEN_URI`) a `file:` URI. + * @param {number | OpenOptions | ((this: import('./sqlite3-binding.js').Database, err: import('./native.js').SqliteError | null) => void)} [a] + * open flags, an options object, or the callback. + * @param {((this: import('./sqlite3-binding.js').Database, err: import('./native.js').SqliteError | null) => void) | OpenOptions} [b] + * the callback (after a mode), or the options object. + * @throws {Error} ERR_ACCESS_DENIED under the permission model when + * the target is not permitted, naming the path and the remedy. + * @throws {TypeError} when the arguments are malformed. + */ + constructor(filename, a, b) { + /** @type {number | undefined} */ + let mode; + /** @type {((this: import('./sqlite3-binding.js').Database, err: import('./native.js').SqliteError | null) => void) | undefined} */ + let callback; + let untrusted = false; + if (typeof a === 'number' && Number.isInteger(a)) { + mode = a; + } else if (typeof a === 'function') { + callback = a; + } else if (isOpenOptions(a)) { + const opts = /** @type {OpenOptions} */ (a); + if (opts.mode !== undefined) { + if (typeof opts.mode !== 'number') { + throw new TypeError( + "open option 'mode' must be a number (an OPEN_* flag set)", + ); + } + mode = opts.mode; + } + if (opts.untrusted !== undefined) { + if (typeof opts.untrusted !== 'boolean') { + throw new TypeError( + "open option 'untrusted' must be a boolean", + ); + } + untrusted = opts.untrusted; + } + } else if (a !== undefined && a !== null) { + throw new TypeError( + 'Database expects a mode number, an options object or a callback as its second argument', + ); + } + if (b !== undefined && b !== null) { + if (typeof b === 'function') { + callback = b; + } else if (isOpenOptions(b)) { + const opts = /** @type {OpenOptions} */ (b); + if (opts.mode !== undefined && mode === undefined) { + mode = opts.mode; + } + if (opts.untrusted === true) untrusted = true; + } + } + assertOpenPermitted(filename, mode); + super( + filename, + ...(mode !== undefined ? [mode] : []), + ...(callback !== undefined ? [callback] : []), + ); + if (untrusted) { + applyUntrustedHardening(this); + } else if (permissionModelActive()) { + // The ATTACH gate closes the SQL-level path to the filesystem + // (ATTACH and VACUUM INTO); the deny-all default is opened up + // only through configure('attachPaths', ...). + /** @type {(...args: unknown[]) => unknown} */ ( + /** @type {unknown} */ (this._setAttachGate) + ).call(this, true, []); + } + } +} + +// The namespace binding is a Proxy around the class for one reason: a +// native node-addon-api class and a JavaScript class word their +// call-without-new TypeError differently ("Class constructors cannot be +// invoked…" vs "Class constructor Database cannot be invoked…"), and the +// exact pre-v9 message is pinned by tests and matched by user code. The +// named export is the class itself; `import { Database }` callers get the +// plain subclass. +sqlite3.Database = /** @type {sqlite3['Database']} */ ( + /** @type {unknown} */ ( + new Proxy(DatabaseClass, { + /** + * Reproduces the native class's exact call-without-new + * TypeError. + * + * @returns {never} + */ + apply() { + throw new TypeError( + "Class constructors cannot be invoked without 'new'", + ); + }, + }) + ) +); + +// The rest of this file (and the promise layer) patches the class +// prototype; this alias keeps those assignments unchanged. +const Database = DatabaseClass; + +/** + * Configures the connection: the pre-v9 native options plus the v9 + * security policies. + * + * - `configure('extensionPolicy', { allow: [...] } | { deny: true })` — + * see {@link Database#loadExtension}. + * - `configure('attachPaths', [...] | null)` — the ATTACH-gate allowlist + * (or null to disarm a manually-armed gate). + * + * @this {import('./sqlite3-binding.js').Database} + * @param {string} option the configuration option. + * @param {...unknown} rest the option's arguments. + * @returns {any} this database, for chaining. + */ +Database.prototype.configure = function (option, ...rest) { + if (option === 'extensionPolicy') { + applyExtensionPolicy(this, rest[0]); + return this; + } + if (option === 'attachPaths') { + applyAttachPaths(this, rest[0]); + return this; + } + return /** @type {any} */ (nativeConfigure.call(this, option, ...rest)); +}; + +/** + * Loads a SQLite extension — arbitrary native code in a shared library, + * gated by policy. + * + * Under Node's permission model every load is refused unless the exact + * path was declared with `configure('extensionPolicy', { allow: [...] })` + * and is fs.read-permitted. `configure('extensionPolicy', { deny: true })` + * disables loading permanently for the connection. On untrusted + * connections (`{ untrusted: true }`) loading is permanently disabled from + * the start. + * + * @this {import('./sqlite3-binding.js').Database} + * @param {string} filename the extension file. + * @param {...unknown} rest optionally a callback. + * @returns {any} this database in callback mode (the promise layer + * rewraps the core). + * @throws {Error} when the policy refuses the load, naming the path and + * the remedy. + */ +Database.prototype.loadExtension = function (filename, ...rest) { + assertExtensionAllowed(this, filename); + return /** @type {any} */ ( + nativeLoadExtension.call(this, filename, ...rest) + ); +}; + +/** + * Creates a backup. The filename side (destination in the short form, + * source when `filenameIsDest` is false) is opened by the native Backup + * layer directly, so under the permission model it is checked like any + * other open — read and write on the file, write on its directory. + * + * @this {import('./sqlite3-binding.js').Database} + * @param {...unknown} args filename and optional callback, or the full + * filename/source/dest/direction/callback form. + * @returns {import('./sqlite3-binding.js').Backup} the created backup. + * @throws {Error} ERR_ACCESS_DENIED under the permission model when the + * filename side is not permitted. + */ +// Database#backup(filename, [callback]) +// Database#backup(filename, destName, sourceName, filenameIsDest, [callback]) +Database.prototype.backup = function (...args) { + if (permissionModelActive() && typeof args[0] === 'string') { + const filenameIsDest = + args.length <= 2 || + args[3] === undefined || + /** @type {boolean} */ (args[3]); + const who = filenameIsDest ? 'Backing up into' : 'Backing up from'; + checkDatabaseFileOpen(path.resolve(args[0]), who); + } + /** @type {import('./sqlite3-binding.js').Backup} */ + let backup; + if (args.length <= 2) { + backup = new Backup( + this, + /** @type {string} */ (args[0]), + 'main', + 'main', + true, + /** @type {((err: Error | null) => void) | undefined} */ (args[1]), + ); + } else { + backup = new Backup( + this, + /** @type {string} */ (args[0]), + /** @type {string} */ (args[1]), + /** @type {string} */ (args[2]), + /** @type {boolean} */ (args[3]), + /** @type {((err: Error | null) => void) | undefined} */ (args[4]), + ); + } + // Per the sqlite docs, exclude the following errors as non-fatal by default. + backup.retryErrors = [sqlite3.BUSY, sqlite3.LOCKED]; + return backup; +}; + /** * Pops a trailing error-first callback off `args`, wrapped so it is * only invoked for a truthy error — the `err === null` success call is @@ -1809,40 +2648,8 @@ sqlite3.cached = { objects: {}, }; -// Database#backup(filename, [callback]) -// Database#backup(filename, destName, sourceName, filenameIsDest, [callback]) -/** - * @this {import('./sqlite3-binding.js').Database} - * @param {...unknown} args filename and optional callback, or the full - * filename/source/dest/direction/callback form. - * @returns {import('./sqlite3-binding.js').Backup} the created backup. - */ -Database.prototype.backup = function (...args) { - /** @type {import('./sqlite3-binding.js').Backup} */ - let backup; - if (args.length <= 2) { - backup = new Backup( - this, - /** @type {string} */ (args[0]), - 'main', - 'main', - true, - /** @type {((err: Error | null) => void) | undefined} */ (args[1]), - ); - } else { - backup = new Backup( - this, - /** @type {string} */ (args[0]), - /** @type {string} */ (args[1]), - /** @type {string} */ (args[2]), - /** @type {boolean} */ (args[3]), - /** @type {((err: Error | null) => void) | undefined} */ (args[4]), - ); - } - // Per the sqlite docs, exclude the following errors as non-fatal by default. - backup.retryErrors = [sqlite3.BUSY, sqlite3.LOCKED]; - return backup; -}; +// Database#backup (the guarded definition) lives with the other +// Deliverable 11 wrappers above, before installPromiseApi runs. /** * Maps rows by their first column via `all`, then reshapes the result. @@ -2029,10 +2836,9 @@ sqlite3.pool = pool; installPromiseApi(sqlite3); export default sqlite3; -export { - Backup, - Blob, - Database, - Session, - Statement, -} from './sqlite3-binding.js'; + +export { Backup, Blob, Session, Statement } from './sqlite3-binding.js'; +// Database is the v9 wrapper (lib/sqlite3.js) — a real subclass of the +// native class carrying the permission-model checks; the other classes +// pass through unchanged. +export { DatabaseClass as Database }; diff --git a/src/database.cc b/src/database.cc index 5da2ae8..d67fa75 100644 --- a/src/database.cc +++ b/src/database.cc @@ -1,6 +1,13 @@ +#include #include #include +#ifdef _WIN32 +#include +#else +#include +#endif + #include "macros.h" #include "database.h" #include "statement.h" @@ -36,6 +43,9 @@ Napi::Object Database::Init(Napi::Env env, Napi::Object exports) { // Hooks, authorizer and progress (Deliverable 07): internal entry // points wrapped by lib/sqlite3.js, which parses options. InstanceMethod("_setAuthorizer", &Database::SetAuthorizer, napi_default_method), + // Permission-model ATTACH gate (Deliverable 11): wrapped by + // lib/sqlite3.js, which permission-checks allowlist entries. + InstanceMethod("_setAttachGate", &Database::SetAttachGate, napi_default_method), InstanceMethod("_progressFlag", &Database::SetProgressFlag, napi_default_method), InstanceMethod("_progressCallback", &Database::SetProgressCallback, napi_default_method), InstanceMethod("_checkpoint", &Database::Checkpoint, napi_default_method), @@ -80,15 +90,26 @@ void Database::Process() { Napi::HandleScope scope(env); if (db_state == DbState::Closed && !queue.empty()) { - EXCEPTION("Database handle is closed", SQLITE_MISUSE, exception); + // Work queued behind a *failed open* fails with the open's own + // error (CANTOPEN etc.), not the generic closed message — it never + // had a chance to run and the open failure is what explains that. + EXCEPTION( + open_failed ? open_error_message.c_str() : "Database handle is closed", + open_failed ? open_error_status : SQLITE_MISUSE, + exception); Napi::Value argv[] = { exception }; bool called = false; - // Call all callbacks with the error object. + // Call all callbacks with the error object. The IsEmpty() guard + // first: Value() on a default-constructed (empty) reference is + // undefined behaviour, and this drain now also fires for + // callback-less internal batons (the permission-model ATTACH gate + // install queued in the constructor) behind a failed open. while (!queue.empty()) { auto call = std::unique_ptr(queue.front()); queue.pop(); auto baton = std::unique_ptr(call->baton); + if (baton->callback.IsEmpty()) continue; Napi::Function cb = baton->callback.Value(); if (IS_FUNCTION(cb)) { TRY_CATCH_CALL(this->Value(), cb, 1, argv); @@ -97,8 +118,10 @@ void Database::Process() { } // When we couldn't call a callback function, emit an error on the - // Database object. - if (!called) { + // Database object — except after a failed open, whose error the + // open path has already delivered through its callback or the + // 'error' event; a second emit here would be an unhandled duplicate. + if (!called && !open_failed) { Napi::Value info[] = { Napi::String::New(env, "error"), exception }; EMIT_EVENT(Value(), 2, info); } @@ -200,6 +223,10 @@ void Database::Work_Open(napi_env e, void* data) { auto* baton = static_cast(data); auto* db = baton->db; + // Kept for the ATTACH gate: whether URI filenames mean anything on + // this connection is decided here, by this flag, and nowhere else. + db->open_mode = baton->mode; + baton->status = sqlite3_open_v2( baton->filename.c_str(), &db->_handle, @@ -220,6 +247,19 @@ void Database::Work_Open(napi_env e, void* data) { // JS error gains err.code (extended name), err.errno (extended // int) and err.primaryCode (primary name). sqlite3_extended_result_codes(db->_handle, 1); + // Belt-and-braces: the C-API extension gate is explicitly off from + // the start. Observed on the vendored 3.53.4 (probed, not cited): + // SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION reads false on a fresh + // open and maps to the C-API flag only — the SQL load_extension() + // function is gated by a second flag (SQLITE_LoadExtFunc) that + // only sqlite3_enable_load_extension() sets, so the SQL function + // is unreachable here even after setting this DBCONFIG to 1. + // Setting 0 anyway makes the C-API state deterministic for source + // builds that compile with SQLITE_ENABLE_LOAD_EXTENSION, which + // turns the C-API flag on by default. loadExtension() re-enables + // the C API for the duration of its call and disables it after. + sqlite3_db_config(db->_handle, SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION, + 0, NULL); } } @@ -233,17 +273,25 @@ void Database::Work_AfterOpen(napi_env e, napi_status status, void* data) { Napi::HandleScope scope(env); // Drains the queue even when the completion callback below throws - // (TRY_CATCH_CALL's early return). After a *failed* open nothing is - // dispatched either way (the connection is still Opening, which - // Process does not dispatch from) — the guard changes only the - // throwing-callback path. The 'open' event still fires before the - // drain, as before. + // (TRY_CATCH_CALL's early return). After a *failed* open the + // connection is Closed by the failure branch below, so this same + // drain fails everything queued behind the open with the open's own + // error. The 'open' event still fires before the drain, as before. ProcessGuard process_on_exit(db); Napi::Value argv[1]; if (baton->status != SQLITE_OK) { EXCEPTION(baton->message, baton->status, exception); argv[0] = exception; + // A failed open is terminal: the connection will never become + // usable, so it lands in Closed — and work already queued behind + // the open (scheduled while it was still Opening) is failed by the + // ProcessGuard drain below with this same error instead of + // stranding in a queue Process() never dispatches from. + db->open_failed = true; + db->open_error_message = baton->message; + db->open_error_status = baton->status; + db->db_state = DbState::Closed; } else { db->db_state = DbState::Open; @@ -1270,7 +1318,12 @@ void Database::Work_SetAuthorizer(Baton* b) { AuthPolicy* old = db->auth_policy; if (baton->remove) { db->auth_policy = NULL; - sqlite3_set_authorizer(db->_handle, NULL, NULL); + // The ATTACH gate shares this single sqlite authorizer slot: the + // callback stays installed while the gate is armed, so removing a + // declarative policy does not silently re-open ATTACH. + if (!db->attach_gate) { + sqlite3_set_authorizer(db->_handle, NULL, NULL); + } } else { db->auth_policy = baton->policy; @@ -1290,6 +1343,16 @@ int Database::AuthorizerCallback(void* ctx, int action, const char* arg1, // the policy is evaluated here precisely because a JS callback could // not return a value synchronously from this context. auto* db = static_cast(ctx); + + // ATTACH gate pre-filter: SQLITE_ATTACH is also what VACUUM INTO + // fires for its output file, so this one check closes both SQL-level + // paths to the filesystem. Falls through to the declarative policy + // when the target is allowed (a user policy may still deny it). + if (db->attach_gate && action == SQLITE_ATTACH + && !AttachTargetAllowed(db, arg1)) { + return SQLITE_DENY; + } + const AuthPolicy* policy = db->auth_policy; if (policy == NULL) return SQLITE_OK; @@ -1308,11 +1371,200 @@ int Database::AuthorizerCallback(void* ctx, int action, const char* arg1, void Database::RemoveAuthorizer() { // Main-thread, nothing in flight (Work_BeginClose / ~Database). - if (_handle != NULL && auth_policy != NULL) { + if (_handle != NULL && (auth_policy != NULL || attach_gate)) { sqlite3_set_authorizer(_handle, NULL, NULL); } delete auth_policy; auth_policy = NULL; + attach_gate = false; + attach_allow.clear(); +} + +// --- ATTACH gate ------------------------------------------------------------- + +namespace { + +// Lexical path comparison helpers for the gate: no syscalls, no symlink +// resolution — a differently-spelled target does not match (fail-closed). +bool PathEquals(const std::string& allowed, const char* arg1) { + if (allowed == arg1) return true; +#ifndef _WIN32 + // POSIX only: '\' is an ordinary filename character, so normalising it + // would *widen* the allowlist — an entry for "dir/x.db" would admit an + // ATTACH of the distinct, never-permission-checked file "dir\x.db" + // (verified: the backslash-spelled file was created and attached). + // Exact match is the whole rule here. + return false; +#else + // Windows: a target may arrive with either separator while the + // allowlist entry (a JS string) uses the other. + if (allowed.find('\\') == std::string::npos + && strchr(arg1, '\\') == NULL) { + return false; + } + size_t n = allowed.size(); + if (strlen(arg1) != n) return false; + for (size_t i = 0; i < n; i++) { + char a = allowed[i]; + char b = arg1[i]; + if (a == '\\') a = '/'; + if (b == '\\') b = '/'; + if (a != b) return false; + } + return true; +#endif +} + +// The process cwd, for making a relative ATTACH target comparable against +// absolute allowlist entries. Empty when unavailable, in which case +// relative targets simply do not match (fail-closed). +std::string CurrentWorkingDir() { + char buf[4096]; +#ifdef _WIN32 + const char* got = _getcwd(buf, sizeof(buf)); +#else + const char* got = getcwd(buf, sizeof(buf)); +#endif + return got != NULL ? std::string(got) : std::string(); +} + +} // namespace + +// _setAttachGate(enabled, allowPaths) arms/disarms the gate. The JS layer +// has already permission-checked every allowlist entry against Node's +// permission model; here the entries are only matched. Exclusive, with the +// same MayBlockOnWorkerRoundTrip deferral as the authorizer: it takes the +// connection mutex to install/remove the sqlite authorizer. +Napi::Value Database::SetAttachGate(const Napi::CallbackInfo& info) { + auto env = info.Env(); + auto* db = this; + + auto* baton = new AttachGateBaton(db, Napi::Function()); + if (info.Length() >= 1 && (info[0].IsBoolean() || info[0].IsNumber())) { + bool enable = info[0].IsBoolean() + ? info[0].As().Value() + : info[0].As().Int32Value() != 0; + baton->enable = enable; + if (enable) { + if (info.Length() < 2 || !info[1].IsArray()) { + delete baton; + Napi::TypeError::New(env, + "attach gate requires an array of allowed paths" + ).ThrowAsJavaScriptException(); + return env.Null(); + } + Napi::Array allow = info[1].As(); + uint32_t count = allow.Length(); + baton->allow.reserve(count); + for (uint32_t i = 0; i < count; i++) { + Napi::Value entry = allow.Get(i); + if (!entry.IsString()) { + delete baton; + Napi::TypeError::New(env, + "allowed attach path " + std::to_string(i) + + " must be a string" + ).ThrowAsJavaScriptException(); + return env.Null(); + } + baton->allow.push_back(entry.As().Utf8Value()); + } + } + } + else { + delete baton; + Napi::TypeError::New(env, + "attach gate expects (enabled, allowedPaths)" + ).ThrowAsJavaScriptException(); + return env.Null(); + } + + db->Schedule(Work_SetAttachGate, baton, true); + db->Process(); + + return info.This(); +} + +void Database::Work_SetAttachGate(Baton* b) { + auto baton = std::unique_ptr( + static_cast(b)); + if (baton->db->MayBlockOnWorkerRoundTrip()) { + baton->db->Schedule(Work_SetAttachGate, baton.release(), true); + return; + } + assert(baton->db->IsOpen()); + assert(baton->db->_handle); + // Nothing in flight: the deferral above guarantees it, and the sqlite + // call below would otherwise race a worker for the connection mutex. + assert(!baton->db->MayBlockOnWorkerRoundTrip()); + auto* db = baton->db; + + db->attach_gate = baton->enable; + db->attach_allow = std::move(baton->allow); + + // One sqlite authorizer slot: install the shared callback when the + // gate arms (unless a declarative policy already installed it), and + // remove it when the gate disarms and no policy remains. + if (db->attach_gate && db->auth_policy == NULL) { + sqlite3_set_authorizer(db->_handle, AuthorizerCallback, db); + } + else if (!db->attach_gate && db->auth_policy == NULL) { + sqlite3_set_authorizer(db->_handle, NULL, NULL); + } + + db->exclusiveHeld = false; + db->Process(); +} + +// Matches an ATTACH target (SQLITE_ATTACH arg1, the filename as written in +// the SQL or bound to it) against the allowlist: exact string, separator- +// normalised, or lexically joined with the process cwd for relative +// targets. No filesystem access, no realpath: matching is lexical on +// purpose, so the caller must ATTACH using a spelling the allowlist +// recognises. +bool Database::AttachTargetAllowed(const Database* db, const char* arg1) { + if (arg1 == NULL) return false; + // ':memory:' is the only spelling that touches no filesystem and so + // cannot be an fs-permission bypass. ('' is NOT one: SQLite creates a + // private temporary database backed by real files under the temp + // directory, so it stays denied — fail-closed.) + // + if (strcmp(arg1, ":memory:") == 0) { + return true; + } + // The URI memory forms are in-memory only on a connection opened with + // SQLITE_OPEN_URI, which is opt-in per open (sqlite3.OPEN_URI) and is + // not the default. Without it SQLite treats 'file:…' as an ordinary + // filename, so accepting these unconditionally opened a hole instead + // of closing one: verified — ATTACH 'file::memory:' on a default + // connection created a real file of that literal name in the process + // cwd, outside the allowlist, while the gate reported it as + // in-memory. On a non-URI connection such a target falls through to + // the allowlist match below, like any other filename. + if ((db->open_mode & SQLITE_OPEN_URI) != 0 + && (sqlite3_strnicmp(arg1, "file::memory:", 13) == 0 + || (sqlite3_strnicmp(arg1, "file:", 5) == 0 + && strstr(arg1, "mode=memory") != NULL))) { + return true; + } + if (db->attach_allow.empty()) return false; + for (const auto& allowed : db->attach_allow) { + if (PathEquals(allowed, arg1)) return true; + } + // A relative target is compared against the cwd-joined spelling of + // each absolute allowlist entry. + if (arg1[0] == '/' || arg1[0] == '\\' + || (isalpha(static_cast(arg1[0])) && arg1[1] == ':')) { + return false; + } + std::string cwd = CurrentWorkingDir(); + if (cwd.empty()) return false; + std::string joined = cwd; + if (joined.back() != '/' && joined.back() != '\\') joined += '/'; + joined += arg1; + for (const auto& allowed : db->attach_allow) { + if (PathEquals(allowed, joined.c_str())) return true; + } + return false; } // --- Progress handler / cancellation token ---------------------------------- @@ -1583,6 +1835,13 @@ void Database::Work_AfterCheckpoint(napi_env e, napi_status status, void* data) db->pending--; db->Process(); + // Calling Value() on a default-constructed (empty) FunctionReference + // is undefined behaviour and fatals in practice. The dual-mode JS + // wrappers always append a callback, so the raw no-callback form of + // these internal entry points was never exercised until the untrusted + // open path queued _dbConfig without one. IsEmpty() is a plain member + // check — the same guard shape Statement::CleanQueue uses. + if (baton->callback.IsEmpty()) return; Napi::Function cb = baton->callback.Value(); if (!IS_FUNCTION(cb)) return; @@ -1702,6 +1961,8 @@ void Database::Work_AfterTableInfo(napi_env e, napi_status status, void* data) { db->pending--; db->Process(); + // See Work_AfterCheckpoint: never call Value() on an empty reference. + if (baton->callback.IsEmpty()) return; Napi::Function cb = baton->callback.Value(); if (!IS_FUNCTION(cb)) return; @@ -1793,6 +2054,8 @@ void Database::Work_AfterDbConfig(napi_env e, napi_status status, void* data) { db->pending--; db->Process(); + // See Work_AfterCheckpoint: never call Value() on an empty reference. + if (baton->callback.IsEmpty()) return; Napi::Function cb = baton->callback.Value(); if (!IS_FUNCTION(cb)) return; diff --git a/src/database.h b/src/database.h index 8cb21c8..765361d 100644 --- a/src/database.h +++ b/src/database.h @@ -319,6 +319,15 @@ class Database : public Napi::ObjectWrap { virtual ~AuthBaton() override { delete policy; } }; + // ATTACH-gate registration (Deliverable 11). Carries the enabled flag + // and the allowlist until the exclusive handler installs them. + struct AttachGateBaton : Baton { + bool enable = false; + std::vector allow; + AttachGateBaton(Database* db_, Napi::Function cb_) : Baton(db_, cb_) {} + virtual ~AttachGateBaton() override = default; + }; + // Cancellation-token registration. Owns the Int32Array reference (and // the captured flag pointer) until the exclusive handler installs it. struct ProgressFlagBaton : Baton { @@ -563,6 +572,26 @@ class Database : public Napi::ObjectWrap { const char* arg2, const char* database, const char* trigger); void RemoveAuthorizer(); + // --- ATTACH gate (Deliverable 11). SQLite exposes exactly one + // authorizer slot per connection, and the declarative authorizer above + // occupies it whenever a policy is installed — so the gate is not a + // second authorizer but a pre-filter evaluated inside + // AuthorizerCallback: while attach_gate is set, every SQLITE_ATTACH + // action (which is also what VACUUM INTO fires for its output file) + // is denied unless the target filename matches the allowlist. The + // allowlist is populated by the JS layer, which permission-checks each + // entry against Node's permission model at declare time — the C side + // cannot query it, and a JS callback here would put JavaScript on the + // prepare path. Matching is lexical (exact string, separator- + // normalised, or joined with the process cwd); symlinks are not + // resolved, so a mismatched spelling is denied — fail-closed. + // attach_gate/attach_allow follow auth_policy's lifetime discipline: + // written only by the exclusive handler at pending == 0 (no prepare + // can be reading them), cleared in Work_BeginClose and ~Database. + Napi::Value SetAttachGate(const Napi::CallbackInfo& info); + static void Work_SetAttachGate(Baton* baton); + static bool AttachTargetAllowed(const Database* db, const char* arg1); + // --- Preupdate event (Deliverable 08). One preupdate hook slot // exists per connection and is shared with the session extension: // sqlite3session_create installs its own hook, displacing ours. @@ -745,6 +774,22 @@ class Database : public Napi::ObjectWrap { sqlite3* _handle = NULL; DbState db_state = DbState::Opening; + + // The sqlite3_open_v2 flags this connection was opened with, recorded + // in Work_Open. The ATTACH gate reads SQLITE_OPEN_URI from it: without + // that flag a 'file:…' target is an ordinary filename, not a URI. + int open_mode = 0; + + // Set when Work_Open failed: the connection then lands in DbState::Closed + // (it will never become usable), and Process()'s closed-state drain + // fails work queued behind the failed open with THIS error rather than + // the generic "Database handle is closed" — the caller queued against a + // database that never existed, and the open failure is the error that + // explains it. Before Deliverable 11 that work sat stranded in the + // queue forever: Process() never dispatched from the Opening state. + bool open_failed = false; + std::string open_error_message; + int open_error_status = SQLITE_OK; // True only while an exclusive call (exec/close/wait/loadExtension) // holds the database: set when it is dispatched, cleared when it // completes. The old sticky `locked` flag stayed true after an @@ -834,6 +879,12 @@ class Database : public Napi::ObjectWrap { // exclusive removal paths, and its round trips ride the shared // js_channel (see src/function.cc). AuthPolicy* auth_policy = NULL; + // The ATTACH gate pre-filter state (see SetAttachGate above). Same + // access discipline as auth_policy: JS-thread writes inside the + // exclusive handler at pending == 0, reads from whatever thread is + // preparing. + bool attach_gate = false; + std::vector attach_allow; ProgressMode progress_mode = ProgressMode::None; int progress_period = 0; std::atomic* progress_flag = NULL; diff --git a/src/session.cc b/src/session.cc index e2fd884..fe40de5 100644 --- a/src/session.cc +++ b/src/session.cc @@ -1281,6 +1281,19 @@ void Database::Work_AfterSerializeToBytes(napi_env e, napi_status status, void* // The exclusive serialize released the database. db->exclusiveHeld = false; + // Never call Value() on a default-constructed (empty) + // FunctionReference: undefined behaviour that fatals in practice on + // the raw no-callback form (see Work_AfterCheckpoint in + // src/database.cc). IsEmpty() is a plain member check. + if (baton->callback.IsEmpty()) { + if (baton->status != SQLITE_OK) { + EXCEPTION(baton->message, baton->status, exception); + Napi::Value info[] = { Napi::String::New(env, "error"), exception }; + EMIT_EVENT(db->Value(), 2, info); + } + db->Process(); + return; + } Napi::Function cb = baton->callback.Value(); if (!IS_FUNCTION(cb)) { if (baton->status != SQLITE_OK) { diff --git a/test/failed_open.test.js b/test/failed_open.test.js new file mode 100644 index 0000000..50fc5d2 --- /dev/null +++ b/test/failed_open.test.js @@ -0,0 +1,82 @@ +// Work queued behind a failed open (Deliverable 11). Before the fix, a +// failed open left the connection in the Opening state forever: Process() +// never dispatches from Opening, so anything queued against the +// connection (statements, config calls) sat stranded and never settled. +// The failed open is now terminal (Closed) and the drain fails queued +// work with the open's own error. A permission refusal cannot reach this +// path (it throws before the native open is scheduled), but a native +// failure — a missing directory, a permissions error — is the same class. + +import assert from 'node:assert'; +import { describe, it } from 'node:test'; + +import sqlite3 from '../lib/sqlite3.js'; + +describe('failed open', function () { + it('fails work queued behind the failed open with the open error', { + timeout: 10000, + }, async function () { + // This test hangs on release/v9 (the queued get never settles); + // the timeout above is what turns that hang into a failure. + const db = new sqlite3.Database( + '/no/such/directory-either/nested/missing.db', + (openErr) => { + assert.strictEqual( + /** @type {Error & { code?: string }} */ (openErr).code, + 'SQLITE_CANTOPEN', + ); + }, + ); + const queued = new Promise((resolve, reject) => { + db.get('SELECT 1 AS v', (err) => { + if (err) resolve(err); + else + reject( + new Error('queued work ran against a dead connection'), + ); + }); + }); + const err = /** @type {Error & { code?: string }} */ (await queued); + assert.strictEqual(err.code, 'SQLITE_CANTOPEN'); + assert.match(err.message, /unable to open database file/); + }); + + it( + 'the connection is terminal: close reports the usual closed error', + { timeout: 10000 }, + function (_t, done) { + const db = new sqlite3.Database( + '/no/such/directory-either/nested/two.db', + ); + db.on('error', () => { + // The open failure surfaced on the error event; the connection + // must now behave like a closed one. + db.close((err) => { + assert.ok(err, 'close on a failed-open connection errors'); + assert.strictEqual( + /** @type {Error & { code?: string }} */ (err).errno, + sqlite3.MISUSE, + ); + done(); + }); + }); + }, + ); + + it( + 'a callback-less failed open emits the error event instead of crashing', + { timeout: 10000 }, + function (_t, done) { + const db = new sqlite3.Database( + '/no/such/directory-either/nested/three.db', + ); + db.on('error', (err) => { + assert.strictEqual( + /** @type {Error & { code?: string }} */ (err).code, + 'SQLITE_CANTOPEN', + ); + done(); + }); + }, + ); +}); diff --git a/test/permission.test.js b/test/permission.test.js new file mode 100644 index 0000000..69ee994 --- /dev/null +++ b/test/permission.test.js @@ -0,0 +1,417 @@ +// The Node permission model under real child processes (Deliverable 11). +// +// --permission cannot be enabled inside an already-running process, and +// the interesting assertions are about the interaction of two flags, so +// every case here spawns a real child (test/support/permission_child.mjs) +// with a real flag combination. The child reports raw observations — +// error codes, messages, outcomes — and this file owns every assertion; +// nothing is stubbed, least of all process.permission. + +import assert from 'node:assert'; +import { spawnSync } from 'node:child_process'; +import { mkdirSync, rmSync, writeFileSync } from 'node:fs'; +import { tmpdir } from 'node:os'; +import { join, sep } from 'node:path'; +import { after, before, describe, it } from 'node:test'; + +const repo = join(import.meta.dirname, '..'); +const childScript = join( + import.meta.dirname, + 'support', + 'permission_child.mjs', +); + +// One fixture root per test-file process: inside/ is what the children's +// --allow-fs-* grants cover; the outside/ tree lives under the OS temp +// directory (see the child script for why it must not be under the repo). +// `node --test` may run files in parallel, so the root is unique to this +// file. +const fixtureRoot = join(repo, 'test', 'tmp', `permission-${process.pid}`); +const inside = join(fixtureRoot, 'inside'); +const outside = join(tmpdir(), `permission-outside-permission-${process.pid}`); + +/** + * The flags every scenario child needs: the model, addons (the package + * does not load without them under the model), the repo (the driver's + * own code, its node_modules and its prebuilds/build), and — on Linux — + * /etc/alpine-release, which node-gyp-build's musl detection stats at + * module load; under the permission model that stat is denied and the + * loader crashes before reaching this package's code (observed in the + * alpine container; the file need only be readable, not present). + * + * @returns {string[]} the base flag set for this platform. + */ +function baseFlags() { + const base = ['--permission', '--allow-addons', `--allow-fs-read=${repo}`]; + if (process.platform === 'linux') { + base.push('--allow-fs-read=/etc/alpine-release'); + } + return base; +} + +/** + * Spawns the scenario child with the given permission flags and returns + * its reported steps keyed by name (plus the exit status). + * + * @param {string} scenario the scenario name. + * @param {string[]} extraFlags permission flags beyond the base set. + * @returns {{ steps: Map, status: number, output: string }} the child's observations. + */ +function runChild(scenario, extraFlags = []) { + const res = spawnSync( + process.execPath, + [ + ...baseFlags(), + ...extraFlags.flat(), + childScript, + scenario, + fixtureRoot, + ], + { encoding: 'utf8', timeout: 60000 }, + ); + assert.strictEqual( + res.status, + 0, + `child ${scenario} exited ${res.status}:\n${res.stderr || res.stdout}`, + ); + const steps = new Map(); + for (const line of res.stdout.split('\n')) { + if (line.startsWith('STEP ')) { + steps.set( + JSON.parse(line.slice(5)).name, + JSON.parse(line.slice(5)), + ); + } + } + assert.ok( + steps.size > 0, + `child ${scenario} reported no steps:\n${res.stdout}\n${res.stderr}`, + ); + return { steps, status: res.status, output: res.stdout }; +} + +// Every grant the scenarios need, computed from the fixture paths. The +// wildcard grant is passed in both separator forms — Node's permission +// matching accepts forward slashes everywhere and the platform separator +// on Windows; the redundant form is harmless (multiple --allow-fs-write +// flags accumulate). +const grants = { + insideWrite: [ + `--allow-fs-write=${inside}${sep}*`, + `--allow-fs-write=${inside}/*`, + ], + exactFileOnly: `--allow-fs-write=${join(inside, 'exact-file-only.db')}`, +}; + +before(function () { + rmSync(fixtureRoot, { recursive: true, force: true }); + mkdirSync(inside, { recursive: true }); + mkdirSync(outside, { recursive: true }); + // A zero-byte file is a valid empty database for a read-only open. + writeFileSync(join(inside, 'ro.db'), ''); + writeFileSync(join(inside, 'exact-file-only.db'), ''); +}); + +after(function () { + rmSync(fixtureRoot, { recursive: true, force: true }); + rmSync(outside, { recursive: true, force: true }); +}); + +describe('permission model', function () { + // The guard on the whole file: if Node ever changes the shape (an + // isEnabled return, a different process.permission availability), + // these probes say so instead of every case failing opaquely. + it('process.permission shape under --permission', { + timeout: 60000, + }, function () { + const { steps } = runChild('model-shape'); + const shape = steps.get('shape'); + assert.strictEqual(shape.permissionType, 'object'); + assert.strictEqual(shape.hasType, 'function'); + // Observed on Node 24 and 26: isEnabled does not exist. The + // implementation gates on process.permission's presence, never on + // a method that may not be there. + assert.strictEqual(shape.isEnabledType, 'undefined'); + }); + + it('read-only open inside the allowed fs works', { + timeout: 60000, + }, async function () { + const { steps } = runChild('ro-open-allowed'); + assert.ok(steps.get('read')?.ok, 'read inside allowed fs'); + assert.ok(steps.get('close')?.ok); + }); + + it('writable open inside a read-only-permitted directory is refused, naming the directory', { + timeout: 60000, + }, function () { + // The exact database file IS write-granted; its directory is not + // (no wildcard), so SQLite could not create the -journal file a + // writable database needs. The refusal must name the directory + // and explain the sidecar files, not blame the file. + const { steps } = runChild('rw-open-denied-dir', [ + grants.exactFileOnly, + ]); + const open = steps.get('open'); + assert.strictEqual(open?.ok, false); + assert.strictEqual(open?.code, 'ERR_ACCESS_DENIED'); + assert.strictEqual(open?.permission, 'FileSystemWrite'); + assert.strictEqual(open?.resource, inside, 'must name the directory'); + assert.match( + open?.message ?? '', + /-journal/, + 'must explain why the directory is needed', + ); + assert.match( + open?.message ?? '', + /--allow-fs-write/, + 'must name the remedy', + ); + }); + + it('writable open with the directory granted works', { + timeout: 60000, + }, function () { + const { steps } = runChild('rw-open-allowed', [grants.insideWrite]); + assert.ok(steps.get('write')?.ok, 'write inside granted dir'); + assert.ok(steps.get('close')?.ok); + }); + + it('open outside the allowed fs is refused, naming the path', { + timeout: 60000, + }, function () { + const { steps } = runChild('open-outside'); + const open = steps.get('open'); + assert.strictEqual(open?.ok, false); + assert.strictEqual(open?.code, 'ERR_ACCESS_DENIED'); + assert.strictEqual(open?.permission, 'FileSystemRead'); + assert.strictEqual(open?.resource, join(outside, 'x.db')); + assert.match(open?.message ?? '', /--allow-fs-read/); + }); + + it("opening '' is refused when the temp directory is not writable", { + timeout: 60000, + }, function () { + // '' is SQLite's private temporary database: a real on-disk file + // under the temp directory, not a special name that needs no fs. + const { steps } = runChild('temp-filename'); + const open = steps.get("open ''"); + assert.strictEqual(open?.ok, false); + assert.strictEqual(open?.code, 'ERR_ACCESS_DENIED'); + assert.strictEqual(open?.permission, 'FileSystemWrite'); + assert.strictEqual(open?.resource, tmpdir()); + }); + + it('ATTACH and VACUUM INTO outside the allowed fs are refused by the gate', { + timeout: 60000, + }, function () { + const { steps } = runChild('attach'); + // VACUUM INTO opens its output through an internal ATTACH, so one + // gate covers both SQL-level paths to the filesystem. + assert.strictEqual(steps.get('attach-outside')?.code, 'SQLITE_AUTH'); + assert.strictEqual( + steps.get('vacuum-into-outside')?.code, + 'SQLITE_AUTH', + ); + assert.ok( + steps.get('attach-memory')?.ok, + ':memory: ATTACH is not an fs path', + ); + }); + + it('configure(attachPaths) admits only its permission-checked targets', { + timeout: 60000, + }, function () { + const { steps } = runChild('attach-allowed', [ + grants.insideWrite, + `--allow-fs-read=${join(inside, 'attach-target.db')}`, + ]); + assert.ok( + steps.get('configure')?.ok, + 'configure accepts a permitted target', + ); + assert.ok( + steps.get('attach-allowed-target')?.ok, + 'the allowlisted target attaches', + ); + assert.strictEqual( + steps.get('attach-other-inside')?.code, + 'SQLITE_AUTH', + 'a different target inside the same dir is still denied (exact-match allowlist)', + ); + assert.strictEqual( + steps.get('vacuum-into-allowed-target')?.code, + 'SQLITE_AUTH', + 'VACUUM INTO needs its own allowlist entry — it is not a free pass', + ); + }); + + it('loadExtension is refused unless allowlisted, and SQL load_extension() stays off', { + timeout: 60000, + }, function () { + // The allowlist grant makes the extension path fs.read-permitted, + // so configure('extensionPolicy') accepts it and the load reaches + // the native dlopen (of a file that does not exist — the point is + // which layer refuses, not that the load succeeds). + const { steps } = runChild('load-extension', [ + '--allow-fs-read=/tmp/definitely-not-there.ext', + ]); + const unlisted = steps.get('load-unlisted'); + assert.strictEqual(unlisted?.ok, false); + assert.strictEqual(unlisted?.code, 'ERR_ACCESS_DENIED'); + assert.match(unlisted?.message ?? '', /extensionPolicy/); + assert.match(unlisted?.message ?? '', /--allow-addons/); + // The allowlisted path passes the policy and fails at the native + // dlopen of the missing file — a different, native error, which + // is exactly how the two refusals are told apart. + assert.strictEqual( + steps.get('load-allowlisted')?.code, + 'SQLITE_ERROR', + 'allowlisted path reaches the native load (dlopen of a missing file)', + ); + // The SQL function is off by default in the vendored SQLite + // (observed: probed on 3.53.4 before any change) and stays off. + assert.strictEqual( + steps.get('sql-load-extension-fn')?.code, + 'SQLITE_ERROR', + ); + assert.match( + steps.get('sql-load-extension-fn')?.message ?? '', + /not authorized/, + ); + }); + + it('file: URIs are checked (or refused when unparsable)', { + timeout: 60000, + }, function () { + const { steps } = runChild('uri'); + assert.ok(steps.get('uri-ro-inside')?.ok, 'ro URI inside allowed fs'); + assert.strictEqual(steps.get('uri-outside')?.code, 'ERR_ACCESS_DENIED'); + assert.strictEqual( + steps.get('uri-outside-noquery')?.code, + 'ERR_ACCESS_DENIED', + ); + assert.ok(steps.get('uri-memory')?.ok, 'file::memory: needs no fs'); + // Unparsable forms are refused rather than passed through. + assert.strictEqual( + steps.get('uri-bad-mode')?.code, + 'ERR_ACCESS_DENIED', + ); + assert.match( + steps.get('uri-bad-mode')?.message ?? '', + /mode parameter 'bogus'/, + ); + assert.strictEqual( + steps.get('uri-non-file-scheme')?.code, + 'ERR_ACCESS_DENIED', + ); + }); + + it('backup destinations are checked like opens', { + timeout: 60000, + }, function () { + const { steps } = runChild('backup', [grants.insideWrite]); + const outsideBackup = steps.get('backup-outside'); + assert.strictEqual(outsideBackup?.ok, false); + assert.strictEqual(outsideBackup?.code, 'ERR_ACCESS_DENIED'); + assert.strictEqual( + outsideBackup?.resource, + join(outside, 'b.db'), + 'names the backup destination', + ); + assert.ok( + steps.get('backup-inside')?.ok, + 'granted destination backs up', + ); + }); + + it(':memory: is unaffected by the model', { timeout: 60000 }, function () { + const { steps } = runChild('memory-unaffected'); + assert.deepStrictEqual(steps.get('read')?.value, { a: 1 }); + }); + + it('untrusted hardening composes with the permission model', { + timeout: 60000, + }, function () { + const { steps } = runChild('untrusted-under-permissions'); + assert.ok(steps.get('read')?.ok); + // The ATTACH refusal comes from the LIMIT_ATTACHED=0 ceiling with + // the message naming it — the deny-all gate is behind the limit + // here; both are part of the hardening. + const attach = steps.get('attach-refused'); + assert.strictEqual(attach?.code, 'SQLITE_ERROR'); + assert.match(attach?.message ?? '', /too many attached databases/); + }); + + it('the pool opens its worker connections under the model', { + timeout: 60000, + }, function () { + const { steps } = runChild('worker-pool', [ + '--allow-worker', + grants.insideWrite, + `--allow-fs-read=${join(inside, 'pool.db')}`, + ]); + assert.deepStrictEqual(steps.get('pool-get')?.value, { v: 1 }); + assert.ok(steps.get('pool-write')?.ok); + assert.ok(steps.get('pool-close')?.ok); + }); + + it('exiting without closing is a clean exit 0 (also after a refused open)', { + timeout: 60000, + }, function () { + for (const scenario of ['exit-unclosed', 'exit-after-refusal']) { + const res = spawnSync( + process.execPath, + [ + ...baseFlags(), + ...grants.insideWrite, + childScript, + scenario, + fixtureRoot, + ], + { encoding: 'utf8', timeout: 60000 }, + ); + // 139 would be a teardown segfault, invisible to any + // in-process assertion. + assert.strictEqual( + res.status, + 0, + `${scenario}: stderr:\n${res.stderr}`, + ); + } + }); + + it('with the model off, none of the above changes behaviour (the zero-cost path)', { + timeout: 60000, + }, function () { + // Same child, NO --permission flag: process.permission is + // undefined and every open/attach/load behaves as it did pre-v9. + const res = spawnSync( + process.execPath, + [childScript, 'off-model', fixtureRoot], + { encoding: 'utf8', timeout: 60000 }, + ); + assert.strictEqual(res.status, 0, `stderr:\n${res.stderr}`); + const steps = new Map(); + for (const line of res.stdout.split('\n')) { + if (line.startsWith('STEP ')) { + const parsed = JSON.parse(line.slice(5)); + steps.set(parsed.name, parsed); + } + } + assert.strictEqual(steps.get('shape')?.permissionType, 'undefined'); + assert.ok(steps.get('write')?.ok, 'writable open without any grants'); + // ATTACH outside any grant works — the whole point of the flag. + assert.ok( + steps.get('attach-outside')?.ok, + 'ATTACH is ungated when the model is off', + ); + // loadExtension reaches the native layer (dlopen of a missing + // file), not a policy refusal. + assert.strictEqual( + steps.get('load-extension-reaches-native')?.code, + 'SQLITE_ERROR', + ); + assert.ok(steps.get('close')?.ok); + }); +}); diff --git a/test/support/permission_child.mjs b/test/support/permission_child.mjs new file mode 100644 index 0000000..157a64c --- /dev/null +++ b/test/support/permission_child.mjs @@ -0,0 +1,330 @@ +// Child-process scenario runner for test/permission.test.js. +// +// The Node permission model cannot be enabled inside an already-running +// process, and every interesting assertion here is about the interaction +// of two *flags*, so each scenario runs as a real child with real +// --permission flags chosen by the parent. The child reports raw +// observations (error codes, messages, outcomes) as one JSON line per +// step; the parent owns the assertions — nothing here decides pass or +// fail. +// +// Usage: node permission_child.mjs +// The fixture root (under the repo, created by the parent) holds the +// inside/ and outside/ trees; the parent's --allow-fs-* grants are +// computed from it. + +import { tmpdir } from 'node:os'; +import path from 'node:path'; + +import sqlite3 from '../../lib/sqlite3.js'; + +const [, , scenario, fixtureRoot] = process.argv; +const inside = path.join(fixtureRoot, 'inside'); +// The outside tree deliberately lives under the OS temp directory, NOT +// inside the repo: the children are granted fs.read of the repo (they +// must read the driver itself), so an "outside" fixture under the repo +// would be inside the grant and prove nothing. +const outside = path.join( + tmpdir(), + `permission-outside-${path.basename(fixtureRoot)}`, +); + +/** @type {unknown[]} */ +const report = []; +const say = (entry) => { + report.push(entry); + console.log(`STEP ${JSON.stringify(entry)}`); +}; + +/** + * Makes a step value JSON-safe: run results carry BigInts (`lastID`), + * which JSON.stringify refuses. + * + * @param {unknown} value the raw value. + * @returns {unknown} a serializable stand-in. + */ +function jsonSafe(value) { + if (typeof value === 'bigint') return `${value}n`; + if (Array.isArray(value)) return value.map(jsonSafe); + if (value !== null && typeof value === 'object') { + /** @type {Record} */ + const out = {}; + for (const [k, v] of Object.entries(value)) out[k] = jsonSafe(v); + return out; + } + return value; +} + +/** + * Runs one step and reports the raw outcome (value or error + * code/message), never judging it. + * + * @param {string} name the step name. + * @param {() => unknown} fn the action. + */ +async function step(name, fn) { + try { + const value = await fn(); + say({ name, ok: true, value: jsonSafe(value ?? null) }); + } catch (err) { + const e = + /** @type {Error & { code?: string, permission?: string, resource?: string }} */ ( + err + ); + say({ + name, + ok: false, + code: e.code ?? null, + permission: e.permission ?? null, + resource: e.resource ?? null, + message: e.message, + }); + } +} + +switch (scenario) { + case 'model-shape': + say({ + name: 'shape', + permissionType: typeof process.permission, + hasType: typeof process.permission?.has, + isEnabledType: typeof process.permission?.isEnabled, + }); + break; + + case 'ro-open-allowed': { + const db = await sqlite3.open(path.join(inside, 'ro.db'), { + mode: sqlite3.OPEN_READONLY, + }); + await step('read', () => db.get('SELECT 1 AS v')); + await step('close', () => db.close()); + break; + } + + case 'rw-open-denied-dir': { + // The exact file is write-granted but its directory is not: the + // journal/WAL check is what must refuse, naming the directory. + const target = path.join(inside, 'exact-file-only.db'); + await step('open', () => sqlite3.open(target)); + break; + } + + case 'rw-open-allowed': { + const db = await sqlite3.open(path.join(inside, 'w.db')); + await step('write', () => db.exec('CREATE TABLE IF NOT EXISTS t (x)')); + await step('close', () => db.close()); + break; + } + + case 'open-outside': { + await step('open', () => + sqlite3.open(path.join(outside, 'x.db'), { + mode: sqlite3.OPEN_READONLY, + }), + ); + break; + } + + case 'temp-filename': { + await step("open ''", () => sqlite3.open('')); + break; + } + + case 'attach': { + const db = await sqlite3.open(':memory:'); + await step('attach-outside', () => + db.exec(`ATTACH '${path.join(outside, 'y.db')}' AS y`), + ); + await step('vacuum-into-outside', () => + db.exec(`VACUUM INTO '${path.join(outside, 'z.db')}'`), + ); + await step('attach-memory', () => db.exec("ATTACH ':memory:' AS m")); + await step('close', () => db.close()); + break; + } + + case 'attach-allowed': { + const db = await sqlite3.open(':memory:'); + const target = path.join(inside, 'attach-target.db'); + await step('configure', () => db.configure('attachPaths', [target])); + await step('attach-allowed-target', () => + db.exec(`ATTACH '${target}' AS ok`), + ); + await step('attach-other-inside', () => + db.exec(`ATTACH '${path.join(inside, 'other.db')}' AS nope`), + ); + await step('vacuum-into-allowed-target', () => + db.exec(`VACUUM INTO '${path.join(inside, 'vac.db')}'`), + ); + await step('close', () => db.close()); + break; + } + + case 'load-extension': { + const db = await sqlite3.open(':memory:'); + await step('load-unlisted', () => + db.loadExtension('/tmp/definitely-not-there.ext'), + ); + await step('configure-allow', () => + db.configure('extensionPolicy', { + allow: ['/tmp/definitely-not-there.ext'], + }), + ); + // Allowlisted: the policy lets it through, so the failure is the + // native dlopen of a missing file — a different error than the + // policy refusal, which is the observable distinction. + await step('load-allowlisted', () => + db.loadExtension('/tmp/definitely-not-there.ext'), + ); + await step('sql-load-extension-fn', () => + db.exec("SELECT load_extension('/tmp/x')"), + ); + await step('close', () => db.close()); + break; + } + + case 'uri': { + await step('uri-ro-inside', () => + sqlite3.open(`file:${path.join(inside, 'ro.db')}?mode=ro`, { + mode: sqlite3.OPEN_READONLY | sqlite3.OPEN_URI, + }), + ); + await step('uri-outside', () => + sqlite3.open(`file:${path.join(outside, 'x.db')}?mode=ro`, { + mode: sqlite3.OPEN_READONLY | sqlite3.OPEN_URI, + }), + ); + await step('uri-outside-noquery', () => + sqlite3.open(`file:${path.join(outside, 'x.db')}`, { + mode: sqlite3.OPEN_READONLY | sqlite3.OPEN_URI, + }), + ); + await step('uri-memory', () => + sqlite3.open('file::memory:', { + mode: sqlite3.OPEN_READWRITE | sqlite3.OPEN_URI, + }), + ); + await step('uri-bad-mode', () => + sqlite3.open(`file:${path.join(inside, 'ro.db')}?mode=bogus`, { + mode: sqlite3.OPEN_READONLY | sqlite3.OPEN_URI, + }), + ); + await step('uri-non-file-scheme', () => + sqlite3.open('http://host/x.db', { + mode: sqlite3.OPEN_READONLY | sqlite3.OPEN_URI, + }), + ); + break; + } + + case 'backup': { + const db = await sqlite3.open(':memory:'); + await db.exec('CREATE TABLE b (x)'); + await step( + 'backup-outside', + () => + new Promise((resolve, reject) => { + const backup = db.backup(path.join(outside, 'b.db')); + backup.step(-1, (err) => (err ? reject(err) : resolve())); + backup.on('error', reject); + }), + ); + await step( + 'backup-inside', + () => + new Promise((resolve, reject) => { + const backup = db.backup(path.join(inside, 'b.db')); + backup.on('error', reject); + backup.step(-1, () => { + backup.finish(() => resolve()); + }); + }), + ); + await step('close', () => db.close()); + break; + } + + case 'memory-unaffected': { + const db = await sqlite3.open(':memory:'); + await db.exec('CREATE TABLE m (a); INSERT INTO m VALUES (1)'); + await step('read', () => db.get('SELECT a FROM m')); + await step('close', () => db.close()); + break; + } + + case 'untrusted-under-permissions': { + const db = await sqlite3.open(path.join(inside, 'ro.db'), { + mode: sqlite3.OPEN_READONLY, + untrusted: true, + }); + await step('read', () => db.get('SELECT 1 AS v')); + await step('attach-refused', () => db.exec("ATTACH ':memory:' AS m")); + await step('close', () => db.close()); + break; + } + + case 'exit-unclosed': { + // Opens, reads, and exits without closing anything. The exit code + // is the assertion (139 would be a segfault at teardown). + const db = await sqlite3.open(path.join(inside, 'ro.db'), { + mode: sqlite3.OPEN_READONLY, + }); + await db.get('SELECT 1 AS v'); + say({ name: 'unclosed-live', ok: true }); + process.exit(0); + break; + } + + case 'exit-after-refusal': { + try { + await sqlite3.open(path.join(outside, 'x.db')); + } catch { + // Refused; nothing was opened, nothing to close. + } + say({ name: 'refused-and-alive', ok: true }); + process.exit(0); + break; + } + + case 'off-model': { + // Runs with NO --permission flag: the zero-cost path. Behaviour + // must be identical to pre-v9. + say({ + name: 'shape', + permissionType: typeof process.permission, + }); + const db = await sqlite3.open(path.join(inside, 'w.db')); + await step('write', () => db.exec('CREATE TABLE IF NOT EXISTS t (x)')); + await step('attach-outside', () => + db.exec(`ATTACH '${path.join(outside, 'y.db')}' AS y`), + ); + await step('load-extension-reaches-native', () => + db.loadExtension('/tmp/definitely-not-there.ext'), + ); + await step('close', () => db.close()); + break; + } + + case 'worker-pool': { + // The pool opens its connections inside worker threads: the + // wrapper's checks run there too (workers see the same + // permission model; the parent grants this file's dir for the + // writer's read-write open). + const p = await sqlite3.pool(path.join(inside, 'pool.db'), { + readers: 0, + }); + await step('pool-get', () => p.get('SELECT 1 AS v')); + await step('pool-write', () => + p.write('CREATE TABLE IF NOT EXISTS pw (x)'), + ); + await step('pool-close', () => p.close()); + break; + } + + default: + console.error(`unknown scenario ${scenario}`); + process.exit(2); +} + +console.log('CHILD_DONE'); +process.exit(0); diff --git a/test/untrusted.test.js b/test/untrusted.test.js new file mode 100644 index 0000000..d1a39b9 --- /dev/null +++ b/test/untrusted.test.js @@ -0,0 +1,344 @@ +// Untrusted database files (Deliverable 11 §2.3): the `untrusted: true` +// open option applies the hostile-file hardening recipe — defensive mode, +// untrusted schema, writable_schema off, extension loading permanently +// disabled, conservative run-time limits and a deny-all ATTACH gate — and +// the fixture below exercises each switch the way a hostile file would. + +import assert from 'node:assert'; +import { mkdirSync, readdirSync, rmSync, writeFileSync } from 'node:fs'; +import { join } from 'node:path'; +import { after, before, describe, it } from 'node:test'; + +import sqlite3 from '../lib/sqlite3.js'; + +const dir = join(import.meta.dirname, 'tmp'); +const hostile = join(dir, `untrusted-hostile-${process.pid}.db`); +const malformed = join(dir, `untrusted-malformed-${process.pid}.db`); + +/** + * Builds a fresh one-table fixture with a trusted connection. + * + * @param {string} file where to write it. + * @returns {Promise} resolves once written and closed. + */ +async function makeFixture(file) { + rmSync(file, { force: true }); + const plan = await sqlite3.open(file, { + mode: sqlite3.OPEN_READWRITE | sqlite3.OPEN_CREATE, + }); + await plan.exec('CREATE TABLE innocent (x)'); + await plan.close(); +} + +before(async function () { + mkdirSync(dir, { recursive: true }); + await makeFixture(hostile); + // Not a database at all. + const junk = Buffer.alloc(4096); + for (let i = 0; i < junk.length; i++) junk[i] = (i * 31) & 0xff; + writeFileSync(malformed, junk); +}); + +after(function () { + rmSync(hostile, { force: true }); + rmSync(malformed, { force: true }); + rmSync(join(dir, `untrusted-tamper-plain-${process.pid}.db`), { + force: true, + }); + rmSync(join(dir, `untrusted-tamper-careful-${process.pid}.db`), { + force: true, + }); +}); + +describe('untrusted database files', function () { + it('opens the file read-only and reads fine', async function () { + const db = await sqlite3.open(hostile, { + mode: sqlite3.OPEN_READONLY, + untrusted: true, + }); + const row = await db.get('SELECT count(*) AS n FROM innocent'); + assert.strictEqual(row.n, 0); + await db.close(); + }); + + it('applies the hardening switches', async function () { + const db = await sqlite3.open(hostile, { + mode: sqlite3.OPEN_READONLY, + untrusted: true, + }); + assert.strictEqual( + await db.dbConfig(sqlite3.DBCONFIG_DEFENSIVE), + true, + 'defensive mode is on', + ); + assert.strictEqual( + await db.dbConfig(sqlite3.DBCONFIG_TRUSTED_SCHEMA), + false, + 'the schema is not trusted', + ); + assert.strictEqual( + await db.dbConfig(sqlite3.DBCONFIG_WRITABLE_SCHEMA), + false, + 'writable_schema is off', + ); + await db.close(); + }); + + it('refuses the schema tamper a plain connection allows', async function () { + const tamper = + "PRAGMA writable_schema=ON; UPDATE sqlite_master SET sql='CREATE TABLE evil (pwned)' WHERE name='innocent'"; + // The plain connection is the control: without the hardening the + // rewrite goes through (this is the classic hostile-file lever). + // It gets its own fixture because a successful tamper leaves the + // schema genuinely inconsistent — that corruption is the point. + const plainFile = join(dir, `untrusted-tamper-plain-${process.pid}.db`); + await makeFixture(plainFile); + const plain = await sqlite3.open(plainFile, { + mode: sqlite3.OPEN_READWRITE, + }); + await assert.doesNotReject( + plain.exec(tamper), + 'control: a plain connection must allow the tamper for this contrast to mean anything', + ); + await plain.close(); + + const carefulFile = join( + dir, + `untrusted-tamper-careful-${process.pid}.db`, + ); + await makeFixture(carefulFile); + const careful = await sqlite3.open(carefulFile, { + mode: sqlite3.OPEN_READWRITE, + untrusted: true, + }); + // The untrusted connection refuses (writable_schema DBCONFIG 0 + // turns the PRAGMA into a no-op, so the update hits sqlite's + // hard protection of sqlite_master). + await assert.rejects(careful.exec(tamper), (err) => + /may not be modified|readonly database/.test( + /** @type {Error} */ (err).message, + ), + ); + // And the schema really is untouched. + const row = await careful.get( + "SELECT count(*) AS n FROM sqlite_master WHERE name='evil'", + ); + assert.strictEqual(row.n, 0); + await careful.close(); + }); + + it('denies ATTACH and VACUUM INTO', async function () { + const db = await sqlite3.open(hostile, { + mode: sqlite3.OPEN_READONLY, + untrusted: true, + }); + await assert.rejects( + db.exec("ATTACH ':memory:' AS m"), + (err) => + /** @type {Error & { code?: string }} */ ( + err.code === 'SQLITE_ERROR' || + /** @type {Error & { code?: string }} */ (err).code === + 'SQLITE_AUTH' + ) && + /too many attached databases|not authorized/.test( + /** @type {Error} */ (err).message, + ), + ); + await assert.rejects( + db.exec(`VACUUM INTO '${join(dir, 'untrusted-vac.db')}'`), + (err) => + /too many attached databases|not authorized|authorization denied|readonly/.test( + /** @type {Error} */ (err).message, + ), + ); + await db.close(); + rmSync(join(dir, 'untrusted-vac.db'), { force: true }); + }); + + it('permanently disables extension loading', async function () { + const db = await sqlite3.open(hostile, { + mode: sqlite3.OPEN_READONLY, + untrusted: true, + }); + await assert.rejects(db.loadExtension('/nonexistent.ext'), (err) => + /untrusted|permanently disabled/.test( + /** @type {Error} */ (err).message, + ), + ); + // And it cannot be re-enabled from SQL either: load_extension() + // is not authorized on the vendored SQLite (observed default). + await assert.rejects( + db.exec("SELECT load_extension('/nonexistent.ext')"), + (err) => /not authorized/.test(/** @type {Error} */ (err).message), + ); + // configure('attachPaths') is refused too: the deny-all gate is + // part of the hardening, not a starting point. + assert.throws( + () => db.configure('attachPaths', ['/tmp/x.db']), + /untrusted connections cannot allow ATTACH/, + ); + assert.throws( + () => + db.configure('extensionPolicy', { + allow: ['/tmp/x.ext'], + }), + /permanently disabled/, + ); + await db.close(); + }); + + it('applies conservative run-time limits', async function () { + const db = await sqlite3.open(hostile, { + mode: sqlite3.OPEN_READONLY, + untrusted: true, + }); + // 200-deep arithmetic nesting: over the EXPR_DEPTH ceiling of 100. + const deep = `SELECT ${'1+('.repeat(200)}1${')'.repeat(200)}`; + await assert.rejects(db.exec(deep), (err) => + /Expression tree is too large/.test( + /** @type {Error} */ (err).message, + ), + ); + // Compound SELECT beyond the ceiling. + const union = `SELECT 1 ${'UNION ALL SELECT 1 '.repeat(600)}`; + await assert.rejects(db.exec(union), (err) => + /too many terms in compound SELECT/.test( + /** @type {Error} */ (err).message, + ), + ); + // Normal queries are unaffected. + assert.strictEqual((await db.get('SELECT 41+1 AS v')).v, 42); + await db.close(); + }); + + it('a malformed file errors gracefully, without crashing', async function () { + const db = await sqlite3.open(malformed, { + mode: sqlite3.OPEN_READONLY, + untrusted: true, + }); + // The open of a non-database file succeeds lazily; the read is + // what reports NOTADB — an error, never a crash. + await assert.rejects( + db.get('SELECT count(*) AS n FROM sqlite_master'), + (err) => + /** @type {Error & { code?: string }} */ (err).code === + 'SQLITE_NOTADB', + ); + await db.close(); + }); + + it('validates the option shape', function () { + assert.throws( + () => + new sqlite3.Database(':memory:', { + untrusted: 'yes', + }), + /untrusted.*must be a boolean/, + ); + assert.throws( + () => + new sqlite3.Database(':memory:', { + mode: 'rw', + }), + /mode.*must be a number/, + ); + assert.throws( + () => new sqlite3.Database(':memory:', 'nonsense'), + /expects a mode number, an options object or a callback/, + ); + }); + + it('the constructor form accepts options in either slot', async function () { + // (filename, options) and (filename, mode, options) — the latter + // is what sqlite3.open produces internally. + const a = new sqlite3.Database(hostile, { + mode: sqlite3.OPEN_READONLY, + untrusted: true, + }); + await a.close(); + const b = new sqlite3.Database(hostile, sqlite3.OPEN_READONLY, { + untrusted: true, + }); + await b.close(); + }); +}); + +// The ATTACH gate matches target filenames lexically, and two of its +// early spellings-based shortcuts were fail-*open*: each let an ATTACH +// create a real file outside the permission-checked allowlist. Both are +// pinned here because the failure is silent — the ATTACH succeeds and the +// file simply appears. +describe('ATTACH gate spelling rules', function () { + const probe = join(dir, `gate-probe-${process.pid}`); + + before(function () { + rmSync(probe, { force: true, recursive: true }); + mkdirSync(probe, { recursive: true }); + }); + after(function () { + rmSync(probe, { force: true, recursive: true }); + }); + + /** + * Opens a gated connection whose allowlist holds exactly one path. + * + * @param {string} allowed the single permitted ATTACH target. + * @param {number} [mode] open flags; defaults to in-memory read/write. + * @returns {Promise} the connection. + */ + async function gated(allowed, mode) { + const db = await sqlite3.open(':memory:', { + mode: mode ?? sqlite3.OPEN_READWRITE | sqlite3.OPEN_CREATE, + }); + db.configure('attachPaths', [allowed]); + return db; + } + + it('denies URI memory spellings on a connection without OPEN_URI', async function () { + // Without SQLITE_OPEN_URI (the default) SQLite reads 'file:…' as + // an ordinary *filename*, so treating these as in-memory admitted + // a real file: ATTACH 'file::memory:' created a file of that + // literal name in the process cwd, outside the allowlist. + const db = await gated(join(probe, 'allowed.db')); + for (const target of ['file::memory:', 'file:x.db?mode=memory']) { + await assert.rejects( + db.exec(`ATTACH DATABASE '${target}' AS z`), + (err) => + /** @type {Error & { code?: string }} */ (err).code === + 'SQLITE_AUTH', + `${target} must be denied without OPEN_URI`, + ); + } + await db.close(); + }); + + it('allows URI memory spellings when the connection did open with OPEN_URI', async function () { + // There they really are in-memory, so denying them would be a + // gratuitous narrowing rather than a safety property. + const db = await gated( + join(probe, 'allowed.db'), + sqlite3.OPEN_READWRITE | sqlite3.OPEN_CREATE | sqlite3.OPEN_URI, + ); + for (const target of ['file::memory:', 'file:x.db?mode=memory']) { + await db.exec(`ATTACH DATABASE '${target}' AS z; DETACH z`); + } + await db.close(); + }); + + it('does not treat a backslash as a separator on POSIX', async function () { + // 'dir\x.db' and 'dir/x.db' are two different files on POSIX, and + // only the latter was permission-checked. Normalising separators + // here (correct on Windows) widened the allowlist to a file that + // was never checked, and the ATTACH created it. + if (process.platform === 'win32') return; + const db = await gated(join(probe, 'sub', 'ok.db')); + await assert.rejects( + db.exec(`ATTACH DATABASE '${join(probe, 'sub')}\\ok.db' AS z`), + (err) => + /** @type {Error & { code?: string }} */ (err).code === + 'SQLITE_AUTH', + ); + assert.deepStrictEqual(readdirSync(probe), []); + await db.close(); + }); +}); diff --git a/types/consumer.check.ts b/types/consumer.check.ts index 27e8299..05d8b49 100644 --- a/types/consumer.check.ts +++ b/types/consumer.check.ts @@ -40,6 +40,39 @@ async function consumer(): Promise { const check: number = count; void check; + // --- Deliverable 11: open options, extension policy, attach paths --- + + // open() accepts flags or a v9 options object. + const untrusted = await sqlite3.open('downloaded.db', { + mode: sqlite3.OPEN_READONLY, + untrusted: true, + }); + await untrusted.close(); + const flagged = await sqlite3.open('file.db', sqlite3.OPEN_READWRITE); + await flagged.close(); + + // The constructor takes the same options object (namespace or named + // export — both are the wrapper). + const constructed = new sqlite3.Database(':memory:', { + untrusted: true, + }); + // @ts-expect-error untrusted is boolean + const constructed2 = new sqlite3.Database(':memory:', { + untrusted: 'yes', + }); + void constructed; + void constructed2; + + // The security configure options typecheck with their shapes. + db.configure('extensionPolicy', { allow: ['/abs/ext.so'] }); + db.configure('extensionPolicy', { deny: true }); + db.configure('attachPaths', ['/abs/aux.db']); + db.configure('attachPaths', null); + // @ts-expect-error unknown policy key + db.configure('extensionPolicy', { maybe: true }); + // @ts-expect-error attachPaths wants paths or null + db.configure('attachPaths', 'nope'); + // --- Negatives: these must NOT compile ------------------------------- // Symbol is not a BindValue (strict binding, Deliverable 02). From bc52b2a0eb3f4245c0ee3c8188e084802fc9d028 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Fri, 28 Aug 2026 11:01:01 +0100 Subject: [PATCH 28/33] Benchmark suite with an RME gate, a baseline comparison, and a working SQLCipher build path Signed-off-by: Prabhu Subramanian --- .github/workflows/bench.yml | 63 ++++ .github/workflows/ci.yml | 74 +++- README.md | 23 +- bench/baseline.json | 457 ++++++++++++++++++++++ bench/bench.js | 731 ------------------------------------ bench/cases/baselines.js | 136 +++++++ bench/cases/concurrency.js | 184 +++++++++ bench/cases/index.js | 193 ++++++++++ bench/cases/marshalling.js | 229 +++++++++++ bench/cases/overhead.js | 445 ++++++++++++++++++++++ bench/cases/read.js | 187 +++++++++ bench/cases/shared.js | 151 ++++++++ bench/cases/sync.js | 132 +++++++ bench/cases/write.js | 185 +++++++++ bench/harness.js | 356 ++++++++++++++++++ bench/index.js | 660 ++++++++++++++++++++++++++++++++ binding.gyp | 13 + biome.json | 6 + docs/performance.md | 473 +++++++++++++++++++++++ docs/security.md | 70 +++- package.json | 4 +- test/bench-stats.test.js | 239 ++++++++++++ 22 files changed, 4245 insertions(+), 766 deletions(-) create mode 100644 .github/workflows/bench.yml create mode 100644 bench/baseline.json delete mode 100644 bench/bench.js create mode 100644 bench/cases/baselines.js create mode 100644 bench/cases/concurrency.js create mode 100644 bench/cases/index.js create mode 100644 bench/cases/marshalling.js create mode 100644 bench/cases/overhead.js create mode 100644 bench/cases/read.js create mode 100644 bench/cases/shared.js create mode 100644 bench/cases/sync.js create mode 100644 bench/cases/write.js create mode 100644 bench/harness.js create mode 100644 bench/index.js create mode 100644 docs/performance.md create mode 100644 test/bench-stats.test.js diff --git a/.github/workflows/bench.yml b/.github/workflows/bench.yml new file mode 100644 index 0000000..ab473e1 --- /dev/null +++ b/.github/workflows/bench.yml @@ -0,0 +1,63 @@ +# Benchmarks (Deliverable 13). A dedicated workflow rather than a job in +# ci.yml, because the nightly `schedule` trigger would wake every job in +# that file; here it wakes exactly this one. +# +# Posture: INFORMATIONAL. `continue-on-error: true` means this job cannot +# fail a build, and that is deliberate — the D11 precedent (sqlcipher is +# post-merge-only so an apt hiccup cannot gate every push) applies more +# strongly here: timing on shared GitHub runners is noisier than apt, and +# a flaky gate is worse than an ungated check. The gate itself still +# exists and still reports: bench:compare exits 2 on a >10% median +# regression, the per-case verdicts are in the log, and the JSON is +# uploaded as an artifact so a regression can be promoted into +# bench/baseline.json deliberately (`--baseline-from`). Local runs on a +# quiet machine are the enforceable gate. +# +# Runner: ubuntu-22.04 is a pinned label (ubuntu-latest floats across a +# mixed pool — results from a mixed pool are noise). Node is pinned to 24 +# to match the environment the committed baselines were captured on. +name: bench +on: + workflow_dispatch: + schedule: + # Nightly at 03:07 UTC — off the top of the hour, when runner + # contention from everyone else's cron spikes. + - cron: '7 3 * * *' + push: + branches: + - 'release/*' + +jobs: + bench: + runs-on: ubuntu-22.04 + timeout-minutes: 40 + # Informational: see the workflow header. A red bench job annotates + # and uploads; it cannot block a merge or a publish. + continue-on-error: true + steps: + - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 + - name: Setup pnpm + uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6.0.10 + - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0 + with: + node-version: 24 + scope: '@appthreat' + - name: Set up Python + uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0 + with: + python-version: '3.12' + - name: Install dependencies + run: pnpm install --frozen-lockfile --ignore-scripts + - name: Rebuild native module (required after --ignore-scripts) + run: pnpm run rebuild + # RME gate + baseline comparison. On a shared runner expect some + # REJECTED cases; that is the harness refusing to report noise, not + # a failure. The verdict lines and the exit code land in the log. + - name: Run benchmarks and compare against baseline + run: pnpm run bench:compare --json bench-results.json + - name: Upload bench results + if: always() + uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1 + with: + name: bench-results-${{ github.sha }} + path: bench-results.json diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 3ac4404..ee924ff 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -349,12 +349,22 @@ jobs: ELECTRON_DISABLE_SANDBOX: '1' run: xvfb-run -a pnpm run test:electron:asar - # SQLCipher source build (Deliverable 11 §2.4): the --sqlite_libname - # option must keep working, and the smoke test proves the link really - # is SQLCipher (a wrong key must fail), not the vendored plain SQLite. - # Build-only against the distro package; like electron-asar it runs - # post-merge on release/ branches, on tags and on demand, so an apt - # hiccup cannot gate every push. + # SQLCipher source build (Deliverable 11 §2.4): the external-SQLite + # build path must keep working, and the smoke test proves the link + # really is SQLCipher (a wrong key must fail), not the vendored plain + # SQLite. Like electron-asar it runs post-merge on release/ branches, + # on tags and on demand, so a build hiccup cannot gate every push. + # + # SQLCipher is built from source rather than installed from apt, and + # that is not incidental: this package uses the session extension and + # the preupdate hook (D08), and Ubuntu's libsqlcipher-dev exports + # neither (`nm -D libsqlcipher.so | grep sqlite3session_create` → 0), + # so the addon cannot link against it at all. The SQLite base version + # matters too — src/node_sqlite3.cc exports extended result codes that + # only exist from 3.53; SQLCipher 4.18 is built on 3.53.4, the same + # amalgamation this repo vendors, and older SQLCipher releases fail to + # compile. All of this was reproduced in a container before it was + # written down. sqlcipher: if: >- github.event_name == 'workflow_dispatch' @@ -363,6 +373,14 @@ jobs: || startsWith(github.ref, 'refs/tags/'))) runs-on: ubuntu-22.04 timeout-minutes: 30 + env: + SQLCIPHER_TAG: v4.18.0 + SQLITE_PREFIX: /opt/sqlcipher + # SQLCipher's current configure installs the library as + # libsqlite3.so with headers at /include, NOT as + # libsqlcipher.*/include/sqlcipher — that layout belongs to the + # distro packaging. The libname follows the artifact, not the name. + SQLITE_LIBNAME: sqlite3 steps: - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1 - name: Setup pnpm @@ -373,16 +391,44 @@ jobs: scope: '@appthreat' - name: Install dependencies run: pnpm install --frozen-lockfile --ignore-scripts - - name: Install SQLCipher - run: sudo apt-get update && sudo apt-get install -y libsqlcipher-dev - - name: Build against the system SQLCipher + - name: Build SQLCipher from source + run: | + sudo apt-get update + sudo apt-get install -y --no-install-recommends libssl-dev tcl + git clone --depth 1 --branch "$SQLCIPHER_TAG" \ + https://github.com/sqlcipher/sqlcipher.git /tmp/sqlcipher + cd /tmp/sqlcipher + # --session is required (see the job header). SQLCipher's own + # mandatory defines have to be repeated here because setting + # CFLAGS replaces its defaults rather than adding to them: drop + # them and the build stops with "SQLCipher must be compiled + # with -DSQLITE_EXTRA_INIT=…". + CFLAGS="-DSQLITE_HAS_CODEC -DSQLITE_ENABLE_COLUMN_METADATA \ + -DSQLITE_ENABLE_PREUPDATE_HOOK \ + -DSQLITE_EXTRA_INIT=sqlcipher_extra_init \ + -DSQLITE_EXTRA_SHUTDOWN=sqlcipher_extra_shutdown \ + -DSQLITE_TEMP_STORE=2" \ + LDFLAGS="-lcrypto" \ + ./configure --prefix="$SQLITE_PREFIX" --session --fts5 --rtree --dbstat + make -j"$(nproc)" + sudo make install + # Fail here, loudly, rather than in a confusing C++ error later. + nm -D "$SQLITE_PREFIX/lib/lib$SQLITE_LIBNAME.so" \ + | grep -q sqlite3session_create + - name: Build against SQLCipher env: + # node-gyp 13 forwards everything after `--` to gyp as build-file + # names, so `rebuild -- --sqlite=…` dies with "not found while + # trying to load". The binding.gyp `sqlite` and `sqlite_libname` + # variables are gyp defines: set them through the GYP_DEFINES + # environment variable, which gyp reads on every run. + GYP_DEFINES: 'sqlite=${{ env.SQLITE_PREFIX }} sqlite_libname=${{ env.SQLITE_LIBNAME }}' # binding.gyp adds <(sqlite)/include; Debian keeps the SQLCipher - # headers under /usr/include/sqlcipher, so point the compiler at - # them too (the same CPPFLAGS dance as docs/security.md). - CPPFLAGS: '-I/usr/include/sqlcipher' - LDFLAGS: '-lsqlcipher' - run: pnpm run rebuild -- --sqlite=/usr --sqlite_libname=sqlcipher + # headers under $SQLITE_PREFIX/include/sqlcipher, so point the + # compiler at them too (the same CPPFLAGS dance as docs/security.md). + CPPFLAGS: '-I${{ env.SQLITE_PREFIX }}/include' + LDFLAGS: '-l${{ env.SQLITE_LIBNAME }} -L${{ env.SQLITE_PREFIX }}/lib' + run: pnpm run rebuild - name: 'Smoke: encrypted database round trip' run: | node --input-type=module -e " diff --git a/README.md b/README.md index be8d6b7..7f45ae8 100644 --- a/README.md +++ b/README.md @@ -184,8 +184,16 @@ const rows = db.allSync("SELECT * FROM t"); const stmt = db.prepareSync("SELECT ? AS v"); // statement-level variants ``` -`getSync/runSync/allSync` execute on the calling thread — roughly 6x faster -than the async equivalents for interactive lookups. They throw when the +`getSync/runSync/allSync` execute on the calling thread. On the benchmark +suite (`pnpm run bench`, [docs/performance.md](docs/performance.md)), +cached single-row lookups are **7–8× faster** than the cached async +`get`/`run` equivalents on arm64 macOS (7.3–8.4× for `getSync`, flat +from batches of 1 to 10,000; `runSync` 6.8× at one operation rising to +~8.7× at 10,000 as per-round overhead amortises) — and **22–31×** on +Linux, where the async threadpool round trip costs more. The gap vanishes for +large result sets on every platform measured: `allSync` over 20,000 rows +is within the run's noise floor of async `all`, because one threadpool +round trip is amortised across every row. They throw when the database is not fully idle: async work in flight or queued, or when called from inside an async completion callback (defer with `setImmediate` or use `db.wait`). They accept no callback argument. Like any synchronous database @@ -652,12 +660,19 @@ headers needs extra flags for `npm install sqlite3 --build-from-source` --runtime=electron --target=44.0.0 --dist-url=https://electronjs.org/headers ``` -In the case of macOS with Homebrew, the full command looks like: +The SQLite location and library name go through `GYP_DEFINES`, not +command-line flags — node-gyp 13 treats anything after `--` as a +build-file name. For macOS with Homebrew: ```bash -npm install sqlite3 --build-from-source --sqlite_libname=sqlcipher --sqlite=`brew --prefix` --runtime=electron --target=44.0.0 --dist-url=https://electronjs.org/headers +export GYP_DEFINES="sqlite=$(brew --prefix) sqlite_libname=sqlcipher" +npm install @appthreat/sqlite3 --build-from-source \ + --runtime=electron --target=44.0.0 --dist-url=https://electronjs.org/headers ``` +SQLCipher needs the session extension enabled, which packaged builds +usually omit — see [docs/security.md](docs/security.md#sqlcipher). + # Security The security posture — what this package does and does not protect diff --git a/bench/baseline.json b/bench/baseline.json new file mode 100644 index 0000000..09918d4 --- /dev/null +++ b/bench/baseline.json @@ -0,0 +1,457 @@ +{ + "schemaVersion": 1, + "note": "Per-environment medians captured deliberately via `pnpm run bench:update`. Compare only within one platform-arch signature; ratios travel across platforms, absolute milliseconds do not. See docs/performance.md.", + "environments": { + "darwin-arm64": { + "capturedAt": "2026-08-28T09:43:49.129Z", + "environment": { + "node": "v26.7.0", + "platform": "darwin", + "arch": "arm64", + "cpuModel": "Apple M4 Pro", + "cpuCount": 14, + "container": "none", + "sqliteVersion": "3.53.4", + "packageVersion": "9.0.0", + "gitSha": "04c255d+dirty", + "exposeGc": true + }, + "config": { + "warmupMs": 500, + "targetSampleMs": 20, + "minSampleMs": 10, + "samples": 32, + "rmeThresholdPct": 5, + "allocSamples": 16 + }, + "noiseFloorPct": 1.1, + "cases": { + "calibration/cached get (A)": { + "medianPerOpMs": 0.010045530225409785, + "rme": 0.006811195823317494, + "n": 32 + }, + "calibration/cached get (B)": { + "medianPerOpMs": 0.009935608974358915, + "rme": 0.010484717298239911, + "n": 32 + }, + "read/all: 1,000 rows × 1 cols": { + "medianPerOpMs": 0.00028176677777778047, + "rme": 0.002658695075233864, + "n": 32 + }, + "read/all: 1,000 rows × 4 cols": { + "medianPerOpMs": 0.000976836309523822, + "rme": 0.027347295539211867, + "n": 32 + }, + "read/all: 1,000 rows × 16 cols": { + "medianPerOpMs": 0.0024604271250000236, + "rme": 0.00950250406217245, + "n": 32 + }, + "read/all: 20,000 rows × 1 cols": { + "medianPerOpMs": 0.00025745286250000276, + "rme": 0.0031791742070999044, + "n": 32 + }, + "read/all: 20,000 rows × 4 cols": { + "medianPerOpMs": 0.0009429885499999727, + "rme": 0.013581050374403637, + "n": 32 + }, + "read/all: 20,000 rows × 16 cols": { + "medianPerOpMs": 0.00242745622500006, + "rme": 0.009966698781573803, + "n": 32 + }, + "read/all: 200,000 rows × 1 cols": { + "medianPerOpMs": 0.00026729104250000093, + "rme": 0.025400290022818652, + "n": 32 + }, + "read/all: 200,000 rows × 4 cols": { + "medianPerOpMs": 0.0009880636475000028, + "rme": 0.004710599880661274, + "n": 32 + }, + "read/all: 20,000 rows × 8 cols wide text": { + "medianPerOpMs": 0.0016940426999997728, + "rme": 0.04422359011385568, + "n": 48 + }, + "read/all: 20,000 rows × 8 cols mostly NULL": { + "medianPerOpMs": 0.0010530812750001134, + "rme": 0.006234193557370376, + "n": 32 + }, + "read/get: single row (prepared statement)": { + "medianPerOpMs": 0.008725886437530006, + "rme": 0.015467933965553711, + "n": 32 + }, + "read/each: 20,000 rows × 4 cols": { + "medianPerOpMs": 0.0007852947749999658, + "rme": 0.013356194812428685, + "n": 32 + }, + "read/iterate: 20,000 rows × 4 cols (for await)": { + "medianPerOpMs": 0.000993237500000032, + "rme": 0.0037215293421532496, + "n": 32 + }, + "read/map: 20,000 rows × 4 cols": { + "medianPerOpMs": 0.0002828216187500402, + "rme": 0.00683024330782903, + "n": 32 + }, + "marshalling/integer ×20,000 (mode 'number')": { + "medianPerOpMs": 0.0002519950562500071, + "rme": 0.007802323205288058, + "n": 32 + }, + "marshalling/integer ×20,000 (mode 'mixed')": { + "medianPerOpMs": 0.00025300599375000275, + "rme": 0.009028936295521157, + "n": 32 + }, + "marshalling/integer ×20,000 (mode 'bigint')": { + "medianPerOpMs": 0.00026103411250001044, + "rme": 0.005661423011411446, + "n": 32 + }, + "marshalling/float ×20,000": { + "medianPerOpMs": 0.000255803643750005, + "rme": 0.015659374281300587, + "n": 32 + }, + "marshalling/short text ×20,000": { + "medianPerOpMs": 0.0002798802062499817, + "rme": 0.004807670728247088, + "n": 32 + }, + "marshalling/long text 4 KiB ×20,000": { + "medianPerOpMs": 0.0013297583249997844, + "rme": 0.026509384703489756, + "n": 32 + }, + "marshalling/unicode text ×20,000": { + "medianPerOpMs": 0.00039928541249992125, + "rme": 0.0030738507132346514, + "n": 32 + }, + "marshalling/NULL ×20,000": { + "medianPerOpMs": 0.00024066926875002538, + "rme": 0.005007376499961769, + "n": 32 + }, + "marshalling/blob 64 B ×20,000": { + "medianPerOpMs": 0.0005181343874999584, + "rme": 0.01917132514692074, + "n": 32 + }, + "marshalling/blob 4,095 B ×20,000 (copy boundary)": { + "medianPerOpMs": 0.0013172625249997507, + "rme": 0.044513070771464484, + "n": 32 + }, + "marshalling/blob 4 KiB ×20,000 (external boundary)": { + "medianPerOpMs": 0.0012928458250000404, + "rme": 0.00637361380669497, + "n": 32 + }, + "marshalling/blob 1 MiB ×256": { + "medianPerOpMs": 0.169722982421888, + "rme": 0.04635886048091257, + "n": 32 + }, + "marshalling/blob round-trip: 2,000 × 256 KiB": { + "medianPerOpMs": 0.08716990625000107, + "rme": 0.008294863802278066, + "n": 32 + }, + "marshalling/blob stream: 100 MiB round trip": { + "medianPerOpMs": 25.799062500009313, + "rme": 0.019364395508511097, + "n": 12 + }, + "write/run: prepared insert ×1,000": { + "medianPerOpMs": 0.009270260500001314, + "rme": 0.013099685818080117, + "n": 32 + }, + "write/db.run: prepare per call ×1,000": { + "medianPerOpMs": 0.01972087499999179, + "rme": 0.012683780511972935, + "n": 32 + }, + "write/db.run: statement cache ×1,000": { + "medianPerOpMs": 0.00995194800000172, + "rme": 0.006414673790151667, + "n": 32 + }, + "write/insert: ×1,000 in one transaction (file db)": { + "medianPerOpMs": 0.00841795415000015, + "rme": 0.007426706523458648, + "n": 32 + }, + "write/exec: 100-statement script": { + "medianPerOpMs": 0.0009146630184331691, + "rme": 0.001554499623550399, + "n": 32 + }, + "sync-vs-async/get: batch of 1 (async)": { + "medianPerOpMs": 0.010338706221772095, + "rme": 0.011614766706301492, + "n": 32 + }, + "sync-vs-async/getSync: batch of 1": { + "medianPerOpMs": 0.0013326750970065482, + "rme": 0.011264836805154358, + "n": 32 + }, + "sync-vs-async/run: batch of 1 (async)": { + "medianPerOpMs": 0.011543604360464765, + "rme": 0.0036037397029153517, + "n": 32 + }, + "sync-vs-async/runSync: batch of 1": { + "medianPerOpMs": 0.0017672032962100423, + "rme": 0.005189788809606095, + "n": 32 + }, + "sync-vs-async/get: batch of 10 (async)": { + "medianPerOpMs": 0.010039508928568874, + "rme": 0.01189602304695289, + "n": 32 + }, + "sync-vs-async/getSync: batch of 10": { + "medianPerOpMs": 0.001385131701388976, + "rme": 0.007759718897581895, + "n": 32 + }, + "sync-vs-async/run: batch of 10 (async)": { + "medianPerOpMs": 0.010218178934011689, + "rme": 0.00798671125204312, + "n": 32 + }, + "sync-vs-async/runSync: batch of 10": { + "medianPerOpMs": 0.0012082340256565059, + "rme": 0.004064214542065195, + "n": 32 + }, + "sync-vs-async/get: batch of 100 (async)": { + "medianPerOpMs": 0.009928750000006403, + "rme": 0.01104955306540595, + "n": 32 + }, + "sync-vs-async/getSync: batch of 100": { + "medianPerOpMs": 0.0014043012500001674, + "rme": 0.007621153818244092, + "n": 32 + }, + "sync-vs-async/run: batch of 100 (async)": { + "medianPerOpMs": 0.010180679999994984, + "rme": 0.004284986754539711, + "n": 32 + }, + "sync-vs-async/runSync: batch of 100": { + "medianPerOpMs": 0.0011946837349396118, + "rme": 0.005576588046650036, + "n": 32 + }, + "sync-vs-async/get: batch of 10,000 (async)": { + "medianPerOpMs": 0.00971873964999977, + "rme": 0.005765711606493298, + "n": 32 + }, + "sync-vs-async/getSync: batch of 10,000": { + "medianPerOpMs": 0.0014041791499999818, + "rme": 0.006802622015030433, + "n": 32 + }, + "sync-vs-async/run: batch of 10,000 (async)": { + "medianPerOpMs": 0.010338022900000214, + "rme": 0.0026070821530813394, + "n": 32 + }, + "sync-vs-async/runSync: batch of 10,000": { + "medianPerOpMs": 0.0011993187500003843, + "rme": 0.008526389200038342, + "n": 32 + }, + "sync-vs-async/allSync: 20,000 rows × 4 cols": { + "medianPerOpMs": 0.000896096899999975, + "rme": 0.008119127518793753, + "n": 32 + }, + "baseline/node:sqlite/get: single row (prepared)": { + "medianPerOpMs": 0.0007915300826573705, + "rme": 0.005594551915207656, + "n": 32 + }, + "baseline/node:sqlite/all: 20,000 rows × 4 cols": { + "medianPerOpMs": 0.00046277761249984906, + "rme": 0.008021644521310151, + "n": 32 + }, + "baseline/node:sqlite/insert: prepared ×1,000": { + "medianPerOpMs": 0.0007845095961534893, + "rme": 0.010848080276816887, + "n": 32 + }, + "baseline/node:sqlite/exec: 100-statement script": { + "medianPerOpMs": 0.0009390738625591124, + "rme": 0.008882377482229413, + "n": 32 + }, + "overhead/stmt.get: 1,000 (callback)": { + "medianPerOpMs": 0.007771236166668435, + "rme": 0.007963833810538746, + "n": 32 + }, + "overhead/stmt.get: 1,000 (promise)": { + "medianPerOpMs": 0.007011874999996508, + "rme": 0.008756977745866208, + "n": 32 + }, + "overhead/db.run cached: 1,000": { + "medianPerOpMs": 0.01016205225000158, + "rme": 0.0041965686613214485, + "n": 32 + }, + "overhead/db.run cached + trace listener: 1,000": { + "medianPerOpMs": 0.01118070825000177, + "rme": 0.015433033949189713, + "n": 32 + }, + "overhead/db.run cached + profile listener: 1,000": { + "medianPerOpMs": 0.010829947999998694, + "rme": 0.016017482263506196, + "n": 32 + }, + "overhead/db.run cached + commit listener: 1,000 autocommits": { + "medianPerOpMs": 0.01069491674999881, + "rme": 0.005254793123814571, + "n": 32 + }, + "overhead/db.run cached + change+commit listeners: 1,000": { + "medianPerOpMs": 0.010603552000000491, + "rme": 0.007207702663653699, + "n": 32 + }, + "overhead/db.run cached after listener removal: 1,000": { + "medianPerOpMs": 0.010268323000003875, + "rme": 0.008832771427041806, + "n": 32 + }, + "overhead/stmt.get: 10,000 with cancellation token": { + "medianPerOpMs": 0.006490883350001241, + "rme": 0.0035227922791729875, + "n": 32 + }, + "overhead/get: statement cache hit": { + "medianPerOpMs": 0.008436187499995867, + "rme": 0.010068262471096101, + "n": 32 + }, + "overhead/get: statement cache miss": { + "medianPerOpMs": 0.020322187499987196, + "rme": 0.01335774015467554, + "n": 32 + }, + "overhead/get: statement cache disabled": { + "medianPerOpMs": 0.018613104000003662, + "rme": 0.007397892904052023, + "n": 32 + }, + "overhead/filter 20k: in SQL (a % 7 = 0)": { + "medianPerOpMs": 0.00005343404473682504, + "rme": 0.004252352519768235, + "n": 32 + }, + "overhead/filter 20k: JS function per row": { + "medianPerOpMs": 0.018593859374999737, + "rme": 0.00797261461489698, + "n": 24 + }, + "overhead/filter 20k: JS after all()": { + "medianPerOpMs": 0.00026887812500008294, + "rme": 0.022642310061755506, + "n": 32 + }, + "overhead/JS round trip: 20k minimal calls": { + "medianPerOpMs": 0.018528647900000215, + "rme": 0.00732334467858852, + "n": 24 + }, + "overhead/JS aggregate: 20k steps": { + "medianPerOpMs": 0.01834567185000051, + "rme": 0.00672127333404264, + "n": 24 + }, + "overhead/JS collation: sort 10k as text": { + "medianPerOpMs": 0.13973669789999985, + "rme": 0.00693993463831048, + "n": 12 + }, + "overhead/db.transaction: 200 empty bodies": { + "medianPerOpMs": 0.016618576249990535, + "rme": 0.0057541281056787946, + "n": 32 + }, + "overhead/raw BEGIN+COMMIT: 200 pairs": { + "medianPerOpMs": 0.013946919642850324, + "rme": 0.005770168144131271, + "n": 32 + }, + "overhead/open+close: 1,000 :memory: connections": { + "medianPerOpMs": 0.022463610986544702, + "rme": 0.0038251200584620156, + "n": 32 + }, + "concurrency/50 concurrent queries: parallelize()": { + "medianPerOpMs": 0.2566156249999767, + "rme": 0.005963452147191693, + "n": 32 + }, + "concurrency/50 concurrent queries: serialize()": { + "medianPerOpMs": 0.2764720799998031, + "rme": 0.0052627194753432326, + "n": 32 + }, + "concurrency/pool.read: 1,000 round trips": { + "medianPerOpMs": 0.022865270499998588, + "rme": 0.007289067496859204, + "n": 32 + }, + "concurrency/pool.get: 1,000 round trips": { + "medianPerOpMs": 0.022192896000007747, + "rme": 0.002635956118361314, + "n": 32 + }, + "concurrency/pool.write: 1,000 round trips": { + "medianPerOpMs": 0.043288166500002265, + "rme": 0.005118315648917148, + "n": 32 + }, + "concurrency/pool.all: 20,000 rows (postMessage transfer)": { + "medianPerOpMs": 0.001574633349999931, + "rme": 0.004336105846491992, + "n": 32 + }, + "concurrency/200 concurrent reads: pool (4 readers)": { + "medianPerOpMs": 0.4917160424999747, + "rme": 0.012400876670519636, + "n": 32 + }, + "concurrency/200 concurrent reads: single connection": { + "medianPerOpMs": 0.5084252075000404, + "rme": 0.014176201619520276, + "n": 32 + } + } + } + } +} diff --git a/bench/bench.js b/bench/bench.js deleted file mode 100644 index e2cc140..0000000 --- a/bench/bench.js +++ /dev/null @@ -1,731 +0,0 @@ -// Micro-benchmarks for the hot paths targeted by the marshalling -// optimisations: row conversion (all/each), bind marshalling (run), -// and blob transfers. Run: node bench/bench.js -import { pipeline } from 'node:stream/promises'; - -import sqlite3 from '../lib/sqlite3.js'; - -function bench(name, fn) { - return new Promise((resolve) => { - // warmup - fn(() => { - const start = process.hrtime.bigint(); - fn(() => { - const ms = Number(process.hrtime.bigint() - start) / 1e6; - resolve({ name, ms }); - }); - }); - }); -} - -async function benchAsync(name, fn) { - await fn(); // warmup - const start = process.hrtime.bigint(); - await fn(); - return { name, ms: Number(process.hrtime.bigint() - start) / 1e6 }; -} - -const results = []; - -async function main() { - const db = new sqlite3.Database(':memory:'); - const db2 = new sqlite3.Database(':memory:'); - const db3 = new sqlite3.Database(':memory:'); - db.exec('CREATE TABLE t (a INTEGER, b REAL, c TEXT, d BLOB)'); - db.exec('CREATE TABLE t2 (a INTEGER, b REAL, c TEXT, d BLOB)'); - db2.exec('CREATE TABLE t2 (a INTEGER, b REAL, c TEXT, d BLOB)'); - db3.exec('CREATE TABLE t (a INTEGER, b REAL, c TEXT, d BLOB)'); - await new Promise((r) => { - const s = db3.prepare('INSERT INTO t VALUES (?, ?, ?, ?)'); - const buf = Buffer.alloc(64); - for (let i = 0; i < 20000; i++) { - buf[0] = i & 0xff; - s.run(i, i + 0.5, `text-value-${i}`, buf); - } - s.finalize(r); - }); - db.exec('CREATE TABLE t3 (d BLOB)'); - - await new Promise((r) => { - const stmt = db.prepare('INSERT INTO t VALUES (?, ?, ?, ?)'); - const buf = Buffer.alloc(64); - for (let i = 0; i < 20000; i++) { - buf[0] = i & 0xff; - stmt.run(i, i + 0.5, `text-value-${i}`, buf); - } - stmt.finalize(r); - }); - - results.push( - await bench('all: 20k rows x 4 cols (read cache)', (done) => { - db.all('SELECT a, b, c, d FROM t', () => done()); - }), - ); - - results.push( - await bench('each: 20k rows x 4 cols', (done) => { - let _n = 0; - db.each( - 'SELECT a, b, c, d FROM t', - () => { - _n++; - }, - () => done(), - ); - }), - ); - - results.push( - await bench('run: 10k inserts (bind+exec)', (done) => { - db.exec('DELETE FROM t2', () => { - const stmt = db.prepare('INSERT INTO t2 VALUES (?, ?, ?, ?)'); - const buf = Buffer.alloc(64); - for (let i = 0; i < 10000; i++) { - buf[0] = i & 0xff; - stmt.run(i, i + 0.5, `text-value-${i}`, buf); - } - stmt.finalize(() => done()); - }); - }), - ); - - results.push( - await bench('db.run: 10k (prepare per call)', (done) => { - db.exec('DELETE FROM t2', () => { - let i = 0; - const next = () => { - if (i === 10000) return done(); - db.run( - 'INSERT INTO t2 VALUES (?, ?, ?, ?)', - i, - i + 0.5, - `text-value-${i}`, - Buffer.alloc(64), - () => { - i++; - next(); - }, - ); - }; - next(); - }); - }), - ); - - results.push( - await bench('db.run + trace: 10k', (done) => { - const onTrace = function () { - /* no-op listener: measures dispatch cost only */ - }; - db.on('trace', onTrace); - db.exec('DELETE FROM t2', () => { - let i = 0; - const next = () => { - if (i === 10000) { - db.removeListener('trace', onTrace); - return done(); - } - db.run( - 'INSERT INTO t2 VALUES (?, ?, ?, ?)', - i, - i + 0.5, - `text-value-${i}`, - Buffer.alloc(64), - () => { - i++; - next(); - }, - ); - }; - next(); - }); - }), - ); - - results.push( - await bench('db.run + profile: 10k', (done) => { - const onProfile = function () { - /* no-op listener: measures dispatch cost only */ - }; - db.on('profile', onProfile); - db.exec('DELETE FROM t2', () => { - let i = 0; - const next = () => { - if (i === 10000) { - db.removeListener('profile', onProfile); - return done(); - } - db.run( - 'INSERT INTO t2 VALUES (?, ?, ?, ?)', - i, - i + 0.5, - `text-value-${i}`, - Buffer.alloc(64), - () => { - i++; - next(); - }, - ); - }; - next(); - }); - }), - ); - - // Deliverable 07: the write-path hooks. "No hook installed" is the - // structural zero (the native hook exists only while a listener is - // registered); the removed-listener variant proves removal returns - // to it. The commit-listener variants measure the active cost. - results.push( - await bench('db.run + commit listener: 10k autocommits', (done) => { - const onCommit = function () { - /* no-op listener: measures dispatch cost only */ - }; - db.on('commit', onCommit); - db.exec('DELETE FROM t2', () => { - let i = 0; - const next = () => { - if (i === 10000) { - db.removeListener('commit', onCommit); - return done(); - } - db.run( - 'INSERT INTO t2 VALUES (?, ?, ?, ?)', - i, - i + 0.5, - `text-value-${i}`, - Buffer.alloc(64), - () => { - i++; - next(); - }, - ); - }; - next(); - }); - }), - ); - - results.push( - await bench('db.run + change+commit listeners: 10k', (done) => { - const onCommit = function () { - /* no-op listener: measures dispatch cost only */ - }; - const onChange = function () { - /* no-op listener: measures dispatch cost only */ - }; - db.on('commit', onCommit); - db.on('change', onChange); - db.exec('DELETE FROM t2', () => { - let i = 0; - const next = () => { - if (i === 10000) { - db.removeListener('commit', onCommit); - db.removeListener('change', onChange); - return done(); - } - db.run( - 'INSERT INTO t2 VALUES (?, ?, ?, ?)', - i, - i + 0.5, - `text-value-${i}`, - Buffer.alloc(64), - () => { - i++; - next(); - }, - ); - }; - next(); - }); - }), - ); - - results.push( - await bench('db.run after hook removal: 10k', (done) => { - const onCommit = function () { - /* installed and removed: proves removal restores baseline */ - }; - db.on('commit', onCommit); - db.removeListener('commit', onCommit); - db.exec('DELETE FROM t2', () => { - let i = 0; - const next = () => { - if (i === 10000) return done(); - db.run( - 'INSERT INTO t2 VALUES (?, ?, ?, ?)', - i, - i + 0.5, - `text-value-${i}`, - Buffer.alloc(64), - () => { - i++; - next(); - }, - ); - }; - next(); - }); - }), - ); - - // Cancellation-token polling cost: an installed token adds one - // relaxed atomic load per `period` VM instructions. Paired against - // "get: 10k single-row lookups" above: the same prepared statement, - // same parameters, token installed vs not. - results.push( - await bench( - 'stmt.get 10k with cancellation token installed', - (done) => { - const token = db.cancellationToken(); - const stmt = db.prepare( - 'SELECT a, b, c, d FROM t WHERE rowid = ?', - ); - let i = 0; - const next = () => { - if (i === 10000) { - return stmt.finalize(() => { - token.destroy(); - done(); - }); - } - i++; - stmt.get((i % 20000) + 1, next); - }; - next(); - }, - ), - ); - - results.push( - await bench('db.run cached: 10k', (done) => { - db2.cacheStatements(); - db2.exec('DELETE FROM t2', () => { - let i = 0; - const next = () => { - if (i === 10000) return done(); - db2.run( - 'INSERT INTO t2 VALUES (?, ?, ?, ?)', - i, - i + 0.5, - `text-value-${i}`, - Buffer.alloc(64), - () => { - i++; - next(); - }, - ); - }; - next(); - }); - }), - ); - - // Pure synchronous loop: the intended usage pattern for the sync API. - { - db3.cacheStatements(); - let warm = db3.getSync('SELECT a, b, c, d FROM t WHERE rowid = ?', 1); - const t0 = process.hrtime.bigint(); - for (let i = 0; i < 10000; i++) { - warm = db3.getSync( - 'SELECT a, b, c, d FROM t WHERE rowid = ?', - (i % 20000) + 1, - ); - } - if (warm === undefined) throw new Error('lookup failed'); - results.push({ - name: 'db.getSync cached: 10k lookups', - ms: Number(process.hrtime.bigint() - t0) / 1e6, - }); - } - - results.push( - await bench('get: 10k single-row lookups', (done) => { - const stmt = db.prepare('SELECT a, b, c, d FROM t WHERE rowid = ?'); - let i = 0; - const next = () => { - if (i === 10000) return stmt.finalize(() => done()); - i++; - stmt.get((i % 20000) + 1, next); - }; - next(); - }), - ); - - // --- Open/close path (Deliverable 11): every connection now goes - // through the Database wrapper in lib/sqlite3.js, whose - // permission-model gate costs one property read with the model off. - results.push( - await benchAsync('open+close: 1k :memory: connections', async () => { - for (let i = 0; i < 1000; i++) { - const conn = new sqlite3.Database(':memory:'); - await new Promise((resolve, reject) => { - conn.once('open', resolve); - conn.once('error', reject); - }); - await new Promise((resolve) => conn.close(resolve)); - } - }), - ); - - // --- Promise-mode variants: the wrapper sits on the hot path of every - // call, so its overhead is measured against the callback rows above. - - results.push( - await benchAsync('db.all (promise): 20k rows x 4 cols', async () => { - await db.all('SELECT a, b, c, d FROM t'); - }), - ); - - results.push( - await benchAsync('stmt.get (promise): 10k lookups', async () => { - const stmt = db.prepare('SELECT a, b, c, d FROM t WHERE rowid = ?'); - for (let i = 0; i < 10000; i++) { - await stmt.get((i % 20000) + 1); - } - await stmt.finalize(); - }), - ); - - results.push( - await benchAsync( - 'db.run (promise): 10k (prepare per call)', - async () => { - await db.exec('DELETE FROM t2'); - for (let i = 0; i < 10000; i++) { - await db.run( - 'INSERT INTO t2 VALUES (?, ?, ?, ?)', - i, - i + 0.5, - `text-value-${i}`, - Buffer.alloc(64), - ); - } - }, - ), - ); - - results.push( - await benchAsync('iterate: 20k rows x 4 cols (for await)', async () => { - let n = 0; - for await (const _row of db.iterate('SELECT a, b, c, d FROM t')) { - n++; - } - if (n !== 20000) throw new Error(`iterate saw ${n} rows`); - }), - ); - - // --- Streaming comparison at 200k rows: each vs all vs iterate. - const db4 = new sqlite3.Database(':memory:'); - await new Promise((r) => { - db4.exec( - 'CREATE TABLE big (a INTEGER, b REAL, c TEXT, d BLOB);\n' + - "INSERT INTO big SELECT x, x+0.5, 'text-value-'||x, zeroblob(64) " + - 'FROM (WITH RECURSIVE cnt(x) AS (SELECT 1 UNION ALL SELECT x+1 FROM cnt WHERE x < 200000) SELECT x FROM cnt);', - r, - ); - }); - - results.push( - await bench('each: 200k rows', (done) => { - let n = 0; - db4.each( - 'SELECT a, b, c, d FROM big', - () => { - n++; - }, - () => { - if (n !== 200000) throw new Error(`each saw ${n} rows`); - done(); - }, - ); - }), - ); - - results.push( - await bench('all: 200k rows', (done) => { - db4.all('SELECT a, b, c, d FROM big', (_err, rows) => { - if (rows.length !== 200000) throw new Error('bad count'); - done(); - }); - }), - ); - - results.push( - await benchAsync('iterate: 200k rows (for await)', async () => { - let n = 0; - for await (const _row of db4.iterate( - 'SELECT a, b, c, d FROM big', - )) { - n++; - } - if (n !== 200000) throw new Error(`iterate saw ${n} rows`); - }), - ); - - results.push( - await bench('blob: 2k x 256KB round-trip', (done) => { - const buf = Buffer.alloc(256 * 1024); - for (let j = 0; j < buf.length; j++) buf[j] = j & 0xff; - db.exec('DELETE FROM t3', () => { - const stmt = db.prepare('INSERT INTO t3 (d) VALUES (?)'); - for (let i = 0; i < 2000; i++) stmt.run(buf); - stmt.finalize(() => { - db.all('SELECT d FROM t3', () => done()); - }); - }); - }), - ); - - // --- User-defined functions (Deliverable 06): the JS round trip is - // the cost that decides when a JS function is the wrong tool. Three - // equivalent 100k-row filters — in SQL, in a JS function called per - // row, and in plain JS after all() — plus the raw per-call cost of a - // minimal JS scalar, an aggregate step, and a collation comparison. - - { - const dbf = new sqlite3.Database(':memory:'); - await new Promise((r) => - dbf.exec( - 'CREATE TABLE f (a INT, b REAL, c TEXT, d BLOB);\n' + - "INSERT INTO f SELECT x, x+0.5, 'text-'||x, zeroblob(64) " + - 'FROM (WITH RECURSIVE cnt(x) AS (SELECT 1 UNION ALL SELECT x+1 FROM cnt WHERE x < 100000) SELECT x FROM cnt);', - r, - ), - ); - - const sqlMs = await benchAsync( - 'filter 100k: in SQL (a % 7 = 0)', - async () => { - const rows = await dbf.all('SELECT a FROM f WHERE a % 7 = 0'); - if (rows.length !== 14285) throw new Error('bad count'); - }, - ); - - dbf.function('seventh', { deterministic: true }, (a) => - a % 7 === 0 ? 1 : 0, - ); - const jsFnMs = await benchAsync( - 'filter 100k: JS fn per row (seventh)', - async () => { - const rows = await dbf.all( - 'SELECT a FROM f WHERE seventh(a) = 1', - ); - if (rows.length !== 14285) throw new Error('bad count'); - }, - ); - dbf.removeFunction('seventh'); - - const jsPostMs = await benchAsync( - 'filter 100k: JS after all()', - async () => { - const rows = await dbf.all('SELECT a FROM f'); - const kept = rows.filter((r) => r.a % 7 === 0); - if (kept.length !== 14285) throw new Error('bad count'); - }, - ); - - results.push(sqlMs, jsFnMs, jsPostMs); - - // Raw round-trip cost: one minimal JS call per row, no filtering. - dbf.function('noop', { deterministic: true }, (_a) => 1); - const noopMs = await benchAsync( - 'JS round trip: 100k minimal calls', - async () => { - await dbf.all('SELECT noop(a) FROM f'); - }, - ); - results.push(noopMs); - const perCallUs = (noopMs.ms * 1000) / 100000; - results.push({ - name: 'JS round trip: per call', - ms: perCallUs, - unit: 'us', - }); - - dbf.aggregate('accumulate', { - start: () => 0, - step: (acc, _v) => acc + 1, - result: (acc) => acc, - }); - const aggMs = await benchAsync( - 'JS aggregate step: 100k rows', - async () => { - const row = await dbf.get('SELECT accumulate(a) AS v FROM f'); - if (row.v !== 100000) throw new Error('bad count'); - }, - ); - results.push(aggMs); - - dbf.collation('natsort', (x, y) => (x < y ? -1 : x > y ? 1 : 0)); - const collMs = await benchAsync( - 'JS collation: sort 100k as text', - async () => { - await dbf.all( - 'SELECT a FROM f ORDER BY CAST(a AS TEXT) COLLATE natsort', - ); - }, - ); - results.push(collMs); - - // db.transaction() reading (D05 follow-up: AsyncLocalStorage sits - // on the transaction path and nothing had measured it). The raw - // BEGIN/COMMIT comparator separates the engine cost from the - // wrapper's (AsyncLocalStorage, the flow-store copy, validation). - const txMs = await benchAsync( - 'db.transaction: 200 empty bodies', - async () => { - for (let i = 0; i < 200; i++) { - // Deliberately empty: this measures the wrapper - // (ALS enter/exit, flow-store copy, validation), not - // any body work. - await dbf.transaction(async () => undefined); - } - }, - ); - results.push(txMs); - const rawTxMs = await benchAsync( - 'raw BEGIN+COMMIT: 200 pairs', - async () => { - for (let i = 0; i < 200; i++) { - await dbf.exec('BEGIN'); - await dbf.exec('COMMIT'); - } - }, - ); - results.push(rawTxMs); - const txOverheadUs = ((txMs.ms - rawTxMs.ms) * 1000) / 200; - results.push({ - name: 'db.transaction: wrapper overhead', - ms: txOverheadUs, - unit: 'us', - }); - - await dbf.close(); - } - - // --- Deliverable 08: the blob stream round trip (flat memory) and - // the binary-size note. 100 MB through createWriteStream and back - // through createReadStream in 64 KiB chunks; RSS is sampled before, - // at the midpoint and after, because the point of incremental blob - // I/O is that memory stays flat regardless of the blob's size. - { - const dbs = await new Promise((resolve) => { - const d = new sqlite3.Database(':memory:', () => resolve(d)); - }); - dbs.exec('CREATE TABLE big (id INTEGER PRIMARY KEY, data BLOB)'); - dbs.exec('INSERT INTO big VALUES (1, zeroblob(100 * 1024 * 1024))'); - const blob = await new Promise((resolve, reject) => { - const b = dbs.openBlob( - { table: 'big', column: 'data', rowid: 1 }, - (err) => (err ? reject(err) : resolve(b)), - ); - }); - - const rss = () => (process.memoryUsage.rss() / 1024 / 1024).toFixed(1); - const rssBefore = rss(); - const src = Buffer.alloc(1024 * 1024, 0xab); - const t0 = process.hrtime.bigint(); - await pipeline( - (async function* () { - for (let i = 0; i < 100; i++) yield src; - })(), - blob.createWriteStream(), - ); - const rssMid = rss(); - let readBytes = 0; - let hash = 0; - let rssMin = Number.POSITIVE_INFINITY; - let rssMax = 0; - await pipeline(blob.createReadStream(), async (source) => { - for await (const chunk of source) { - readBytes += chunk.length; - for (let i = 0; i < chunk.length; i += 4096) { - hash = (hash * 31 + chunk[i]) | 0; - } - const now = Number(process.memoryUsage.rss()); - if (now < rssMin) rssMin = now; - if (now > rssMax) rssMax = now; - } - }); - const ms = Number(process.hrtime.bigint() - t0) / 1e6; - if (readBytes !== 100 * 1024 * 1024) throw new Error('short read'); - void hash; - const rssAfter = rss(); - results.push({ - name: 'blob stream: 100MB round trip', - ms, - }); - // The write-phase growth (rssMid) is SQLite's in-memory rollback - // journal for rewriting the whole blob — reproduced identically - // with a direct blob.write loop, so it is inherent to the - // operation, not the streaming API. What must stay flat is the - // read: min/max RSS sampled per chunk across all 100 MB. - console.log( - `blob stream RSS: before=${rssBefore}MB ` + - `after-write=${rssMid}MB (incl. sqlite rollback journal) ` + - `read-phase min=${(rssMin / 1048576).toFixed(1)}MB ` + - `max=${(rssMax / 1048576).toFixed(1)}MB ` + - `after=${rssAfter}MB (flat read if max~min)`, - ); - await blob.close(); - await new Promise((r) => dbs.close(r)); - } - - // --- Worker pool round trips (Deliverable 09) --------------------------- - // - // The cross-thread cost: one pool.read/pool.write is a postMessage - // down, a query on a worker connection, and a structured-clone back. - // Measured against the same query on a local connection. - { - const path = await import('node:path'); - const os = await import('node:os'); - const poolFile = path.join(os.tmpdir(), `bench-pool-${process.pid}.db`); - const fs = await import('node:fs'); - for (const suffix of ['', '-wal', '-shm']) { - fs.rmSync(poolFile + suffix, { force: true }); - } - const pool = await sqlite3.pool(poolFile, { readers: 1 }); - await pool.exec('CREATE TABLE t (a INTEGER, b TEXT)'); - await pool.write('INSERT INTO t VALUES (?, ?)', [1, 'seed']); - - results.push( - await benchAsync('pool.read: 10k (round trip)', async () => { - for (let i = 0; i < 10000; i++) { - await pool.read('SELECT a, b FROM t WHERE a = ?', [1]); - } - }), - ); - results.push( - await benchAsync('pool.get: 10k (round trip)', async () => { - for (let i = 0; i < 10000; i++) { - await pool.get('SELECT a, b FROM t WHERE a = ?', [1]); - } - }), - ); - results.push( - await benchAsync('pool.write: 10k (round trip)', async () => { - for (let i = 0; i < 10000; i++) { - await pool.write('INSERT INTO t VALUES (?, ?)', [i, 'x']); - } - }), - ); - await pool.close(); - for (const suffix of ['', '-wal', '-shm']) { - fs.rmSync(poolFile + suffix, { force: true }); - } - } - - for (const r of results) { - const value = - 'unit' in r && r.unit === 'us' - ? `${r.ms.toFixed(2).padStart(8)} us` - : `${r.ms.toFixed(1).padStart(8)} ms`; - console.log(r.name.padEnd(40), value); - } - await new Promise((r) => - db.close(() => db2.close(() => db3.close(() => db4.close(r)))), - ); -} - -main(); diff --git a/bench/cases/baselines.js b/bench/cases/baselines.js new file mode 100644 index 0000000..8f9b9ae --- /dev/null +++ b/bench/cases/baselines.js @@ -0,0 +1,136 @@ +// Comparison baselines (Deliverable 13 §2.3): node:sqlite (built in — +// the default choice for Node users today, so every sync-path number is +// reported next to it) and better-sqlite3 (the incumbent sync binding, +// behind --compare and an optional install; it is NOT a devDependency — +// `npm i --no-save better-sqlite3` before running with --compare). +// +// The mirrors use the same fixtures and statement shapes as the package +// cases they are ratio'd against. +import { intRows } from './shared.js'; + +/** @typedef {import('../harness.js').CaseSpec} CaseSpec */ + +/** + * The four mirror cases against a synchronous baseline driver + * (node:sqlite's DatabaseSync or better-sqlite3's Database). + * + * @param {any} db the baseline connection (prepared-statement API: prepare/get/all/run/exec). + * @param {string} prefix case-name prefix, e.g. 'baseline/node:sqlite'. + * @param {{ getSyncCase: string, allSyncCase: string, insertCase: string, execCase: string }} ratios case names to ratio against. + * @returns {CaseSpec[]} the mirror cases. + */ +export function baselineCases(db, prefix, ratios) { + db.exec('CREATE TABLE t (c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB)'); + db.exec(intRows(20000, "x, x + 0.5, 'text-value-' || x, zeroblob(64)")); + db.exec('CREATE TABLE w (c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB)'); + const buf = Buffer.alloc(64); + const K = 1000; + + /** @type {CaseSpec[]} */ + return [ + { + name: `${prefix}/get: single row (prepared)`, + group: 'baseline', + ratioTo: ratios.getSyncCase, + iter: (_env, n) => { + const stmt = db.prepare('SELECT * FROM t WHERE rowid = ?'); + for (let i = 0; i < n; i++) { + stmt.get((i % 20000) + 1); + } + }, + }, + { + name: `${prefix}/all: 20,000 rows × 4 cols`, + group: 'baseline', + ops: 20000, + ratioTo: ratios.allSyncCase, + iter: (_env, n) => { + const stmt = db.prepare('SELECT * FROM t'); + for (let i = 0; i < n; i++) { + const rows = stmt.all(); + if (rows.length !== 20000) throw new Error('bad count'); + } + }, + }, + { + name: `${prefix}/insert: prepared ×1,000`, + group: 'baseline', + ops: K, + ratioTo: ratios.insertCase, + note: 'each round clears the table first (timed, not counted)', + iter: (_env, n) => { + const del = db.prepare('DELETE FROM w'); + const stmt = db.prepare('INSERT INTO w VALUES (?, ?, ?, ?)'); + for (let r = 0; r < n; r++) { + del.run(); + for (let i = 0; i < K; i++) { + stmt.run(i, i + 0.5, `text-value-${i}`, buf); + } + } + }, + }, + { + name: `${prefix}/exec: 100-statement script`, + group: 'baseline', + ops: 100, + ratioTo: ratios.execCase, + iter: (_env, n) => { + const script = Array.from( + { length: 100 }, + (_, i) => + `INSERT INTO w VALUES (${i}, ${i}.5, 's${i}', x'00')`, + ).join(';\n'); + for (let i = 0; i < n; i++) { + db.exec(`DELETE FROM w;\n${script}`); + } + }, + }, + ]; +} + +/** + * Builds the node:sqlite mirror cases when the built-in module is + * importable (Node >= 22.5; unflagged since 23.4). + * + * @param {{ getSyncCase: string, allSyncCase: string, insertCase: string, execCase: string }} ratios case names to ratio against. + * @returns {Promise<{ cases: CaseSpec[], dispose: () => void } | { skipped: string }>} the mirror cases, or a skip reason. + */ +export async function nodeSqliteCases(ratios) { + let mod; + try { + mod = await import('node:sqlite'); + } catch (err) { + return { + skipped: `node:sqlite not available: ${/** @type {Error} */ (err).message}`, + }; + } + const db = new mod.DatabaseSync(':memory:'); + return { + cases: baselineCases(db, 'baseline/node:sqlite', ratios), + dispose: () => db.close(), + }; +} + +/** + * Builds the better-sqlite3 mirror cases when the package is installed + * and --compare was passed. Never a devDependency of this repo. + * + * @param {{ getSyncCase: string, allSyncCase: string, insertCase: string, execCase: string }} ratios case names to ratio against. + * @returns {Promise<{ cases: CaseSpec[], dispose: () => void } | { skipped: string }>} the mirror cases, or a skip reason. + */ +export async function betterSqliteCases(ratios) { + let mod; + try { + mod = await import('better-sqlite3'); + } catch { + return { + skipped: + 'better-sqlite3 not installed (optional; npm i --no-save better-sqlite3)', + }; + } + const db = mod.default(':memory:'); + return { + cases: baselineCases(db, 'baseline/better-sqlite3', ratios), + dispose: () => db.close(), + }; +} diff --git a/bench/cases/concurrency.js b/bench/cases/concurrency.js new file mode 100644 index 0000000..5998ac6 --- /dev/null +++ b/bench/cases/concurrency.js @@ -0,0 +1,184 @@ +// Concurrency cases (Deliverable 13 §2.2): parallelize() vs serialize() +// under N concurrent queries, and the worker pool against a single +// connection — including the postMessage row-transfer cost that decides +// whether the pool is worth using (D09 filed "a real number for the pool +// under contention"; this is it). +import { join } from 'node:path'; + +import { intRows } from './shared.js'; + +/** @typedef {import('../harness.js').CaseSpec} CaseSpec */ + +/** + * parallelize() vs serialize(): 50 concurrent 1,000-row queries on one + * connection, wall-clock. Same connection, same queries — only the + * scheduling mode differs. + * + * @param {any} db an open connection with a 1,000-row table `c`. + * @returns {CaseSpec[]} the two scheduling cases. + */ +export function schedulingCases(db) { + db.exec('CREATE TABLE c (v INTEGER)'); + db.exec(intRows(1000, 'x', 'c')); + const CONCURRENT = 50; + + /** @param {boolean} serialized @returns {Promise} one round */ + const round = async (serialized) => { + /** @type {Promise[]} */ + let started = []; + const mode = serialized ? db.serialize : db.parallelize; + mode.call(db, () => { + started = Array.from({ length: CONCURRENT }, () => + db.all('SELECT * FROM c'), + ); + }); + const rows = await Promise.all(started); + for (const r of rows) { + if (/** @type {any[]} */ (r).length !== 1000) + throw new Error('bad count'); + } + }; + + return [ + { + name: 'concurrency/50 concurrent queries: parallelize()', + group: 'concurrency', + ops: CONCURRENT, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) await round(false); + }, + }, + { + name: 'concurrency/50 concurrent queries: serialize()', + group: 'concurrency', + ops: CONCURRENT, + ratioTo: 'concurrency/50 concurrent queries: parallelize()', + iter: async (_env, n) => { + for (let i = 0; i < n; i++) await round(true); + }, + }, + ]; +} + +/** + * The pool cases (Deliverable 09 keepers plus the contention pair): + * round trips, 200 concurrent reads pool-vs-single-connection, and the + * postMessage row-transfer cost (pool.all of 20k rows against the same + * query on a local connection). + * + * @param {typeof import('../../lib/sqlite3.js').default} sqlite3 the driver. + * @param {any} localDb a local connection with a 20,000-row table `c20` (the pool file gets the same data). + * @param {{ dir: string }} scratch scratch directory for the pool file. + * @returns {Promise<{ cases: CaseSpec[], dispose: () => Promise }>} the pool cases and disposer. + */ +export async function poolCases(sqlite3, localDb, scratch) { + localDb.exec('CREATE TABLE c20 (c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB)'); + localDb.exec( + intRows(20000, "x, x + 0.5, 'text-value-' || x, zeroblob(64)", 'c20'), + ); + + const file = join(scratch.dir, 'bench-pool.db'); + const pool = await sqlite3.pool(file, { readers: 4 }); + await pool.exec('CREATE TABLE t (a INTEGER, b TEXT)'); + await pool.exec('CREATE TABLE c20 (c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB)'); + await pool.write( + "INSERT INTO c20 SELECT x, x + 0.5, 'text-value-' || x, zeroblob(64) " + + 'FROM (WITH RECURSIVE cnt(x) AS (SELECT 1 UNION ALL SELECT x+1 FROM cnt WHERE x < 20000) SELECT x FROM cnt)', + ); + await pool.write('INSERT INTO t VALUES (?, ?)', [1, 'seed']); + + /** @type {CaseSpec[]} */ + const cases = [ + { + name: 'concurrency/pool.read: 1,000 round trips', + group: 'concurrency', + ops: 1000, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + for (let r = 0; r < 1000; r++) { + await pool.read('SELECT a, b FROM t WHERE a = ?', [1]); + } + } + }, + }, + { + name: 'concurrency/pool.get: 1,000 round trips', + group: 'concurrency', + ops: 1000, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + for (let r = 0; r < 1000; r++) { + await pool.get('SELECT a, b FROM t WHERE a = ?', [1]); + } + } + }, + }, + { + name: 'concurrency/pool.write: 1,000 round trips', + group: 'concurrency', + ops: 1000, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + for (let r = 0; r < 1000; r++) { + await pool.write('INSERT INTO t VALUES (?, ?)', [ + r, + 'x', + ]); + } + } + await pool.exec('DELETE FROM t'); + await pool.write('INSERT INTO t VALUES (?, ?)', [1, 'seed']); + }, + }, + { + name: 'concurrency/pool.all: 20,000 rows (postMessage transfer)', + group: 'concurrency', + ops: 20000, + ratioTo: 'read/all: 20,000 rows × 4 cols', + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const rows = await pool.read('SELECT * FROM c20'); + if (rows.length !== 20000) throw new Error('bad count'); + } + }, + }, + { + name: 'concurrency/200 concurrent reads: pool (4 readers)', + group: 'concurrency', + ops: 200, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const rows = await Promise.all( + Array.from({ length: 200 }, () => + pool.read('SELECT * FROM c20 WHERE c0 % 100 = 0'), + ), + ); + if (rows.length !== 200) throw new Error('bad count'); + } + }, + }, + { + name: 'concurrency/200 concurrent reads: single connection', + group: 'concurrency', + ops: 200, + ratioTo: 'concurrency/200 concurrent reads: pool (4 readers)', + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const rows = await Promise.all( + Array.from({ length: 200 }, () => + localDb.all('SELECT * FROM c20 WHERE c0 % 100 = 0'), + ), + ); + if (rows.length !== 200) throw new Error('bad count'); + } + }, + }, + ]; + + return { + cases, + dispose: async () => { + await pool.close(); + }, + }; +} diff --git a/bench/cases/index.js b/bench/cases/index.js new file mode 100644 index 0000000..138ed59 --- /dev/null +++ b/bench/cases/index.js @@ -0,0 +1,193 @@ +// Composes the full suite. Case files are imported explicitly — never +// globbed — for the same reason tools/run-tests.mjs exists: a shell glob +// enumerated zero files on Windows while exiting 0. + +import { betterSqliteCases, nodeSqliteCases } from './baselines.js'; +import { poolCases, schedulingCases } from './concurrency.js'; +import { + blobRoundTripCase, + blobStreamCase, + marshallingCases, +} from './marshalling.js'; +import { + cacheTrioCases, + openCloseCase, + overheadCases, + transactionCases, + udfCases, +} from './overhead.js'; +import { readCases } from './read.js'; +import { + colDefsFor, + colsFor, + connectionRegistry, + intRows, + scratchDir, +} from './shared.js'; +import { syncCases } from './sync.js'; +import { writeCases } from './write.js'; + +/** @typedef {import('../harness.js').CaseSpec} CaseSpec */ + +/** + * The calibration case: a cached async single-row get — the README's + * "interactive lookup" shape. Measured twice as two independent cases; + * their same-run difference is the suite's noise floor, and every ratio + * the harness prints is checked against it. + * + * @param {any} db a cache-enabled connection with a 20,000-row table `t`. + * @param {string} name case name (A or B). + * @returns {CaseSpec} the calibration case. + */ +function calibrationCase(db, name) { + return { + name, + group: 'calibration', + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + await db.get( + 'SELECT * FROM t WHERE rowid = ?', + (i % 20000) + 1, + ); + } + }, + }; +} + +/** + * Builds every case and every fixture the suite needs. + * + * @param {typeof import('../lib/sqlite3.js').default} sqlite3 the driver. + * @param {{ compare: boolean }} opts whether --compare was passed (enables the better-sqlite3 mirror). + * @returns {Promise<{ cases: CaseSpec[], dispose: () => Promise, skipped: string[] }>} the composed suite. + */ +export async function buildSuite(sqlite3, opts) { + const registry = connectionRegistry(sqlite3); + const scratch = scratchDir(); + /** @type {(() => Promise | void)[]} */ + const disposers = []; + /** @type {string[]} */ + const skipped = []; + + // Calibration pair: two identical connections, measured back to back. + for (const label of ['calA', 'calB']) { + const db = registry.mem(label); + db.exec( + `CREATE TABLE t (${colDefsFor(4)}); ${intRows(20000, colsFor(4))}`, + ); + db.cacheStatements(); + } + /** @type {CaseSpec[]} */ + const cases = [ + calibrationCase(registry.all[0], 'calibration/cached get (A)'), + calibrationCase(registry.all[1], 'calibration/cached get (B)'), + ]; + + // read group (own connection, no cache) + cases.push(...readCases(registry.mem('read'))); + + // marshalling group: three integer-mode connections + keepers. The + // default mode is 'number'; the other two are set explicitly per + // connection so the modes cannot contaminate each other's numbers. + const marshalNumber = registry.mem('marshal-number'); + const marshalMixed = registry.mem('marshal-mixed'); + const marshalBigint = registry.mem('marshal-bigint'); + cases.push( + ...marshallingCases({ + number: marshalNumber, + mixed: marshalMixed, + bigint: marshalBigint, + }), + ); + await setIntegerMode(marshalMixed, 'mixed'); + await setIntegerMode(marshalBigint, 'bigint'); + cases.push(blobRoundTripCase(registry.mem('blob-rt'))); + cases.push(blobStreamCase(registry.mem('blob-stream'))); + + // write group: plain + cached connections + cases.push( + ...writeCases(registry.mem('write'), registry.mem('write-cached')), + ); + + // sync-vs-async group: two cache-enabled connections + cases.push(...syncCases(registry.mem('sync'), registry.mem('async'))); + + // baseline mirrors + const ratioNames = { + getSyncCase: 'sync-vs-async/getSync: batch of 1', + allSyncCase: 'sync-vs-async/allSync: 20,000 rows × 4 cols', + insertCase: 'sync-vs-async/runSync: batch of 1', + execCase: 'write/exec: 100-statement script', + }; + const nodeSqlite = await nodeSqliteCases(ratioNames); + if ('cases' in nodeSqlite) { + cases.push(...nodeSqlite.cases); + disposers.push(nodeSqlite.dispose); + } else { + skipped.push(nodeSqlite.skipped); + } + if (opts.compare) { + const better = await betterSqliteCases(ratioNames); + if ('cases' in better) { + cases.push(...better.cases); + disposers.push(better.dispose); + } else { + skipped.push(better.skipped); + } + } + + // overhead group + cases.push(...overheadCases(registry.mem('overhead'))); + cases.push( + ...cacheTrioCases({ + hit: registry.mem('cache-hit'), + miss: registry.mem('cache-miss'), + disabled: registry.mem('cache-off'), + }), + ); + cases.push(...udfCases(registry.mem('udf'))); + cases.push(...transactionCases(registry.mem('txn'))); + cases.push(openCloseCase(sqlite3)); + + // concurrency group + cases.push(...schedulingCases(registry.mem('scheduling'))); + { + const pool = await poolCases( + sqlite3, + registry.mem('pool-local'), + scratch, + ); + cases.push(...pool.cases); + disposers.push(pool.dispose); + } + + // Deterministic drain barrier: every fixture table was created with + // un-awaited exec() calls (queued FIFO per connection); wait() queues + // at each tail and resolves only once reached, so every connection is + // provably idle before the first sample — sync methods refuse + // otherwise, and a busy queue would fail cases non-deterministically. + await Promise.all(registry.all.map((db) => db.wait())); + + return { + cases, + skipped, + dispose: async () => { + await Promise.allSettled( + disposers.map((fn) => Promise.resolve().then(fn)), + ); + await registry.dispose(); + scratch.cleanup(); + }, + }; +} + +/** + * Sets the integer mode on a connection, awaiting the queued configure. + * + * @param {any} db the connection. + * @param {'number' | 'mixed' | 'bigint'} mode the mode. + * @returns {Promise} resolves once configured. + */ +async function setIntegerMode(db, mode) { + await db.configure('integerMode', mode); +} diff --git a/bench/cases/marshalling.js b/bench/cases/marshalling.js new file mode 100644 index 0000000..c49201e --- /dev/null +++ b/bench/cases/marshalling.js @@ -0,0 +1,229 @@ +// Marshalling cases (Deliverable 13 §2.2): each value type in isolation, +// read as a single column so per-op cost is per-value conversion. This is +// the regression guard for the Deliverable 02/03b marshalling work — the +// hottest code in the addon (GetRow/RowToJS/CellToJS). +// +// Integer modes get three connections because configure('integerMode') +// is per-connection and the modes must not contaminate each other's +// numbers. All connections enable the statement cache: allSync on a +// cached statement is the purest read path this package has. +// +// Allocation is measured for every case here (alloc: true): the +// marshalling work is fundamentally about allocation, and external +// buffers (blobs >= 4096 bytes become zero-copy external buffers in +// CellToJS, src/convert.cc) do not show up in heapUsed at all — watch +// the `external` and `arrayBuffers` counters for those. + +/** @typedef {import('../harness.js').CaseSpec} CaseSpec */ + +/** + * One single-column marshalling case. + * + * @param {string} name case name. + * @param {any} db connection to read on (cache enabled). + * @param {string} table table name (single column `v`). + * @param {number} rows row count. + * @returns {CaseSpec} the case. + */ +function colCase(name, db, table, rows) { + const sql = `SELECT v FROM ${table}`; + return { + name, + group: 'marshalling', + ops: rows, + iter: (_env, n) => { + for (let i = 0; i < n; i++) { + const out = db.allSync(sql); + if (out.length !== rows) throw new Error('bad row count'); + } + }, + alloc: true, + allocIter: (env, n) => { + for (let i = 0; i < n; i++) { + env.keep = db.allSync(sql); + } + }, + }; +} + +/** + * Builds the marshalling cases on the given connections. + * + * @param {{ number: any, mixed: any, bigint: any }} dbs one cache-enabled connection per integer mode. + * @returns {CaseSpec[]} the marshalling cases. + */ +export function marshallingCases(dbs) { + const db = dbs.number; + + /** @param {string} cols @param {string} table */ + const make = (table, cols, rows) => { + db.exec(`CREATE TABLE ${table} (v)`); + db.exec( + `INSERT INTO ${table} SELECT ${cols} FROM (WITH RECURSIVE cnt(x) AS ` + + `(SELECT 1 UNION ALL SELECT x+1 FROM cnt WHERE x < ${rows}) SELECT x FROM cnt)`, + ); + }; + + const floatCols = 'x + 0.5'; + const shortTextCols = "'short-' || x"; + const longTextCols = "printf('%4096s', '') || x"; + const unicodeCols = "'説明コード🌟パフォーマンス' || x"; + const nullCols = 'NULL'; + const blob = (n) => `zeroblob(${n})`; + + // The int-mode tables exist on all three connections. + for (const modeDb of [dbs.number, dbs.mixed, dbs.bigint]) { + modeDb.exec('CREATE TABLE m_int (v)'); + modeDb.exec( + 'INSERT INTO m_int SELECT x FROM (WITH RECURSIVE cnt(x) AS ' + + '(SELECT 1 UNION ALL SELECT x+1 FROM cnt WHERE x < 20000) SELECT x FROM cnt)', + ); + modeDb.cacheStatements(); + } + + make('m_float', floatCols, 20000); + make('m_shorttext', shortTextCols, 20000); + make('m_longtext', longTextCols, 20000); + make('m_unicode', unicodeCols, 20000); + make('m_null', nullCols, 20000); + make('m_blob64', blob(64), 20000); + // 4095/4096 straddle the external-buffer boundary in CellToJS: + // < 4096 copies, >= 4096 moves the payload into a zero-copy external + // Buffer. The pair exists to keep that boundary honest. + make('m_blob4095', blob(4095), 20000); + make('m_blob4k', blob(4096), 20000); + make('m_blob64k', blob(65536), 4096); + make('m_blob1m', blob(1024 * 1024), 256); + db.cacheStatements(); + + return [ + colCase( + "marshalling/integer ×20,000 (mode 'number')", + dbs.number, + 'm_int', + 20000, + ), + colCase( + "marshalling/integer ×20,000 (mode 'mixed')", + dbs.mixed, + 'm_int', + 20000, + ), + colCase( + "marshalling/integer ×20,000 (mode 'bigint')", + dbs.bigint, + 'm_int', + 20000, + ), + colCase('marshalling/float ×20,000', db, 'm_float', 20000), + colCase('marshalling/short text ×20,000', db, 'm_shorttext', 20000), + colCase('marshalling/long text 4 KiB ×20,000', db, 'm_longtext', 20000), + colCase('marshalling/unicode text ×20,000', db, 'm_unicode', 20000), + colCase('marshalling/NULL ×20,000', db, 'm_null', 20000), + colCase('marshalling/blob 64 B ×20,000', db, 'm_blob64', 20000), + colCase( + 'marshalling/blob 4,095 B ×20,000 (copy boundary)', + db, + 'm_blob4095', + 20000, + ), + colCase( + 'marshalling/blob 4 KiB ×20,000 (external boundary)', + db, + 'm_blob4k', + 20000, + ), + colCase('marshalling/blob 64 KiB ×4,096', db, 'm_blob64k', 4096), + colCase('marshalling/blob 1 MiB ×256', db, 'm_blob1m', 256), + ]; +} + +/** + * The blob round-trip keeper from the pre-v9 bench (bind + read back), + * at the old 2k × 256 KiB shape so history stays comparable. + * + * @param {any} db a cache-free connection. + * @returns {CaseSpec} the case. + */ +export function blobRoundTripCase(db) { + db.exec('CREATE TABLE m_rt (d BLOB)'); + const buf = Buffer.alloc(256 * 1024); + for (let j = 0; j < buf.length; j++) buf[j] = j & 0xff; + return { + name: 'marshalling/blob round-trip: 2,000 × 256 KiB', + group: 'marshalling', + ops: 2000, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + await db.exec('DELETE FROM m_rt'); + await new Promise((resolve, reject) => { + const stmt = db.prepare('INSERT INTO m_rt (d) VALUES (?)'); + for (let r = 0; r < 2000; r++) stmt.run(buf); + stmt.finalize((err) => (err ? reject(err) : resolve())); + }); + const rows = await db.all('SELECT d FROM m_rt'); + if (rows.length !== 2000) throw new Error('bad count'); + } + }, + }; +} + +/** + * The incremental-blob stream round trip (Deliverable 08 keeper): 100 MiB + * through createWriteStream and back through createReadStream. Sample + * count is reduced — one iteration is ~half a second — and the case is + * honest that its per-op number is a coarse whole-operation figure. + * + * @param {any} db a cache-free connection. + * @returns {CaseSpec} the case. + */ +export function blobStreamCase(db) { + return { + name: 'marshalling/blob stream: 100 MiB round trip', + group: 'marshalling', + samples: 12, + note: 'whole-operation figure; few samples by construction', + setup: async () => { + const { pipeline } = await import('node:stream/promises'); + await db.exec( + 'CREATE TABLE big (id INTEGER PRIMARY KEY, data BLOB)', + ); + await db.exec( + 'INSERT INTO big VALUES (1, zeroblob(100 * 1024 * 1024))', + ); + const blob = await new Promise((resolve, reject) => { + const b = db.openBlob( + { table: 'big', column: 'data', rowid: 1 }, + (/** @type {Error | null} */ err) => + err ? reject(err) : resolve(b), + ); + }); + const src = Buffer.alloc(1024 * 1024, 0xab); + return { pipeline, blob, src }; + }, + teardown: async (env) => { + await new Promise((resolve) => env.blob.close(resolve)); + }, + iter: async (env, n) => { + for (let i = 0; i < n; i++) { + await env.pipeline( + (async function* () { + for (let j = 0; j < 100; j++) yield env.src; + })(), + env.blob.createWriteStream(), + ); + let readBytes = 0; + await env.pipeline( + env.blob.createReadStream(), + async (source) => { + for await (const chunk of source) { + readBytes += chunk.length; + } + }, + ); + if (readBytes !== 100 * 1024 * 1024) + throw new Error('short read'); + } + }, + }; +} diff --git a/bench/cases/overhead.js b/bench/cases/overhead.js new file mode 100644 index 0000000..d40fb47 --- /dev/null +++ b/bench/cases/overhead.js @@ -0,0 +1,445 @@ +// Overhead cases (Deliverable 13 §2.2): promise vs callback per call, +// trace/profile listeners, the statement cache hit/miss/disabled trio, +// JS scalar functions per row, and the per-deliverable keepers (hooks, +// cancellation token, transaction wrapper, open+close). +import { intRows, seqCallbacks } from './shared.js'; + +/** @typedef {import('../harness.js').CaseSpec} CaseSpec */ + +/** + * Builds the callback/promise, trace/profile, hook and token cases. + * + * @param {any} db an open connection with an empty write table `ow`. + * @returns {CaseSpec[]} overhead cases sharing that connection. + */ +export function overheadCases(db) { + db.exec('CREATE TABLE ow (c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB)'); + db.cacheStatements(); + const RUN_SQL = 'INSERT INTO ow VALUES (?, ?, ?, ?)'; + const buf = Buffer.alloc(64); + const K = 1000; + + /** One cached-write round: clear, then K inserts. */ + const writeRound = async () => { + await db.exec('DELETE FROM ow'); + for (let i = 0; i < K; i++) { + await db.run(RUN_SQL, i, i + 0.5, `text-value-${i}`, buf); + } + }; + + /** @type {CaseSpec[]} */ + const cases = [ + { + name: 'overhead/stmt.get: 1,000 (callback)', + group: 'overhead', + ops: 1000, + iter: async (_env, n) => { + for (let r = 0; r < n; r++) { + await seqCallbacks(1000, (i, done) => + db.get('SELECT 42 AS v, ? AS p', i, done), + ); + } + }, + }, + { + name: 'overhead/stmt.get: 1,000 (promise)', + group: 'overhead', + ops: 1000, + ratioTo: 'overhead/stmt.get: 1,000 (callback)', + iter: async (_env, n) => { + for (let r = 0; r < n; r++) { + for (let i = 0; i < 1000; i++) { + await db.get('SELECT 42 AS v, ? AS p', i); + } + } + }, + }, + { + name: 'overhead/db.run cached: 1,000', + group: 'overhead', + ops: K, + note: 'each round clears the table first (timed, not counted)', + iter: async (_env, n) => { + for (let r = 0; r < n; r++) await writeRound(); + }, + }, + ]; + + // trace/profile: attach a no-op listener for the round, remove it + // after, so each case is self-contained on the shared connection. + for (const kind of ['trace', 'profile']) { + cases.push({ + name: `overhead/db.run cached + ${kind} listener: 1,000`, + group: 'overhead', + ops: K, + ratioTo: 'overhead/db.run cached: 1,000', + note: 'each round clears the table first (timed, not counted)', + iter: async (_env, n) => { + const listener = () => { + /* no-op listener: measures dispatch cost only */ + }; + db.on(kind, listener); + try { + for (let r = 0; r < n; r++) await writeRound(); + } finally { + db.removeListener(kind, listener); + } + }, + }); + } + + // The D07 write-path hooks. "after removal" is the structural zero: + // the native hook exists only while a listener is registered, and the + // case proves removal returns to the cached baseline. + cases.push( + { + name: 'overhead/db.run cached + commit listener: 1,000 autocommits', + group: 'overhead', + ops: K, + ratioTo: 'overhead/db.run cached: 1,000', + note: 'each round clears the table first (timed, not counted)', + iter: async (_env, n) => { + const listener = () => { + /* no-op listener: measures dispatch cost only */ + }; + db.on('commit', listener); + try { + for (let r = 0; r < n; r++) await writeRound(); + } finally { + db.removeListener('commit', listener); + } + }, + }, + { + name: 'overhead/db.run cached + change+commit listeners: 1,000', + group: 'overhead', + ops: K, + ratioTo: 'overhead/db.run cached: 1,000', + note: 'each round clears the table first (timed, not counted)', + iter: async (_env, n) => { + const onCommit = () => { + /* no-op listener: measures dispatch cost only */ + }; + const onChange = () => { + /* no-op listener: measures dispatch cost only */ + }; + db.on('commit', onCommit); + db.on('change', onChange); + try { + for (let r = 0; r < n; r++) await writeRound(); + } finally { + db.removeListener('commit', onCommit); + db.removeListener('change', onChange); + } + }, + }, + { + name: 'overhead/db.run cached after listener removal: 1,000', + group: 'overhead', + ops: K, + ratioTo: 'overhead/db.run cached: 1,000', + note: 'each round clears the table first (timed, not counted)', + iter: async (_env, n) => { + const listener = () => { + /* no-op listener: measures dispatch cost only */ + }; + db.on('commit', listener); + db.removeListener('commit', listener); + for (let r = 0; r < n; r++) await writeRound(); + }, + }, + { + name: 'overhead/stmt.get: 10,000 with cancellation token', + group: 'overhead', + ops: 10000, + ratioTo: 'read/get: single row (prepared statement)', + setup: () => { + const token = db.cancellationToken(); + const stmt = db.prepare('SELECT 42 AS v'); + return { token, stmt }; + }, + teardown: async (env) => { + await new Promise((resolve) => env.stmt.finalize(resolve)); + env.token.destroy(); + }, + iter: async (env, n) => { + for (let r = 0; r < n; r++) { + for (let i = 0; i < 10000; i++) { + await env.stmt.get(); + } + } + }, + }, + ); + + return cases; +} + +/** + * The statement-cache trio (§2.2): hit (same SQL every call), miss (never + * the same SQL twice — a 16-entry cache over 1,000 distinct statements), + * and disabled (no cache; a prepare per call through the database queue). + * Three connections, because cacheStatements() cannot be turned off. + * + * @param {{ hit: any, miss: any, disabled: any }} dbs three connections, each with a 1,000-row lookup table `g`. + * @returns {CaseSpec[]} the cache trio cases. + */ +export function cacheTrioCases(dbs) { + for (const db of [dbs.hit, dbs.miss, dbs.disabled]) { + db.exec('CREATE TABLE g (v INTEGER)'); + db.exec(intRows(1000, 'x', 'g')); + } + dbs.hit.cacheStatements(64); + dbs.miss.cacheStatements(16); + + /** @type {CaseSpec[]} */ + const cases = [ + { + name: 'overhead/get: statement cache hit', + group: 'overhead', + ops: 1000, + iter: async (_env, n) => { + for (let r = 0; r < n; r++) { + for (let i = 0; i < 1000; i++) { + await dbs.hit.get( + 'SELECT v FROM g WHERE rowid = ?', + (i % 1000) + 1, + ); + } + } + }, + }, + { + name: 'overhead/get: statement cache miss', + group: 'overhead', + ops: 1000, + ratioTo: 'overhead/get: statement cache hit', + iter: async (_env, n) => { + let call = 0; + for (let r = 0; r < n; r++) { + for (let i = 0; i < 1000; i++) { + // Every call prepares: never the same SQL twice, + // and the 16-entry cache keeps evicting. + await dbs.miss.get( + `SELECT v FROM g WHERE rowid = ? /*${call++}*/`, + (i % 1000) + 1, + ); + } + } + }, + }, + { + name: 'overhead/get: statement cache disabled', + group: 'overhead', + ops: 1000, + ratioTo: 'overhead/get: statement cache hit', + iter: async (_env, n) => { + for (let r = 0; r < n; r++) { + for (let i = 0; i < 1000; i++) { + await dbs.disabled.get( + 'SELECT v FROM g WHERE rowid = ?', + (i % 1000) + 1, + ); + } + } + }, + }, + ]; + return cases; +} + +/** + * The user-defined-function keepers (Deliverable 06): the JS round trip + * is the cost that decides when a JS function is the wrong tool — a JS + * function called from a query running on a worker thread pays a + * cross-thread round trip per invocation, which is the number to beat. + * + * Row counts are 20,000 (10,000 for the collation sort): a JS call per + * row costs tens of microseconds, so 100k rows per sample — the old + * one-shot bench's shape — would put a single sample over two seconds. + * + * @param {any} db an open connection with a 20,000-row table `f`. + * @returns {CaseSpec[]} the UDF cases. + */ +export function udfCases(db) { + db.exec('CREATE TABLE f (a INT, b REAL, c TEXT, d BLOB)'); + db.exec(intRows(20000, "x, x + 0.5, 'text-' || x, zeroblob(64)", 'f')); + + /** @type {CaseSpec[]} */ + const cases = [ + { + name: 'overhead/filter 20k: in SQL (a % 7 = 0)', + group: 'overhead', + ops: 20000, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const rows = await db.all( + 'SELECT a FROM f WHERE a % 7 = 0', + ); + if (rows.length !== 2857) throw new Error('bad count'); + } + }, + }, + { + name: 'overhead/filter 20k: JS function per row', + group: 'overhead', + ops: 20000, + samples: 24, + iter: async (_env, n) => { + db.function('seventh', { deterministic: true }, (a) => + a % 7 === 0 ? 1 : 0, + ); + try { + for (let i = 0; i < n; i++) { + const rows = await db.all( + 'SELECT a FROM f WHERE seventh(a) = 1', + ); + if (rows.length !== 2857) throw new Error('bad count'); + } + } finally { + db.removeFunction('seventh'); + } + }, + }, + { + name: 'overhead/filter 20k: JS after all()', + group: 'overhead', + ops: 20000, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const rows = await db.all('SELECT a FROM f'); + const kept = rows.filter( + (/** @type {{a: number}} */ r) => r.a % 7 === 0, + ); + if (kept.length !== 2857) throw new Error('bad count'); + } + }, + }, + { + name: 'overhead/JS round trip: 20k minimal calls', + group: 'overhead', + ops: 20000, + samples: 24, + iter: async (_env, n) => { + db.function('noop', { deterministic: true }, (_a) => 1); + try { + for (let i = 0; i < n; i++) { + await db.all('SELECT noop(a) FROM f'); + } + } finally { + db.removeFunction('noop'); + } + }, + }, + { + name: 'overhead/JS aggregate: 20k steps', + group: 'overhead', + ops: 20000, + samples: 24, + iter: async (_env, n) => { + db.aggregate('accumulate', { + start: () => 0, + step: (/** @type {number} */ acc, _v) => acc + 1, + result: (/** @type {number} */ acc) => acc, + }); + try { + for (let i = 0; i < n; i++) { + const row = await db.get( + 'SELECT accumulate(a) AS v FROM f', + ); + if (row.v !== 20000) throw new Error('bad count'); + } + } finally { + db.removeFunction('accumulate'); + } + }, + }, + { + name: 'overhead/JS collation: sort 10k as text', + group: 'overhead', + ops: 10000, + samples: 12, + note: 'O(n log n) JS comparisons — the per-row figure is per sorted row', + iter: async (_env, n) => { + db.collation( + 'natsort', + (/** @type {string} */ x, /** @type {string} */ y) => + x < y ? -1 : x > y ? 1 : 0, + ); + try { + for (let i = 0; i < n; i++) { + await db.all( + 'SELECT a FROM f WHERE a <= 10000 ORDER BY CAST(a AS TEXT) COLLATE natsort', + ); + } + } finally { + db.removeCollation('natsort'); + } + }, + }, + ]; + return cases; +} + +/** + * The db.transaction() wrapper keepers (D05 follow-up): deliberately + * empty bodies measure the wrapper (AsyncLocalStorage, flow-store copy, + * validation) against raw BEGIN/COMMIT. + * + * @param {any} db an open connection. + * @returns {CaseSpec[]} the transaction-wrapper cases. + */ +export function transactionCases(db) { + return [ + { + name: 'overhead/db.transaction: 200 empty bodies', + group: 'overhead', + ops: 200, + iter: async (_env, n) => { + for (let r = 0; r < n; r++) { + for (let i = 0; i < 200; i++) { + await db.transaction(async () => undefined); + } + } + }, + }, + { + name: 'overhead/raw BEGIN+COMMIT: 200 pairs', + group: 'overhead', + ops: 200, + iter: async (_env, n) => { + for (let r = 0; r < n; r++) { + for (let i = 0; i < 200; i++) { + await db.exec('BEGIN'); + await db.exec('COMMIT'); + } + } + }, + }, + ]; +} + +/** + * The open/close keeper (Deliverable 11): every connection goes through + * the Database wrapper whose permission-model gate costs one property + * read with the model off. + * + * @param {typeof import('../../lib/sqlite3.js').default} sqlite3 the driver. + * @returns {CaseSpec} the case. + */ +export function openCloseCase(sqlite3) { + return { + name: 'overhead/open+close: 1,000 :memory: connections', + group: 'overhead', + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const conn = new sqlite3.Database(':memory:'); + await new Promise((resolve, reject) => { + conn.once('open', resolve); + conn.once('error', reject); + }); + await new Promise((resolve) => conn.close(resolve)); + } + }, + }; +} diff --git a/bench/cases/read.js b/bench/cases/read.js new file mode 100644 index 0000000..a46083b --- /dev/null +++ b/bench/cases/read.js @@ -0,0 +1,187 @@ +// Read-path cases (Deliverable 13 §2.2): `all` across a rows × columns +// matrix, plus `get`/`each`/`iterate`/`map`, a wide-text row set and a +// mostly-NULL row set. Marshalling optimisations that only help narrow +// integer columns should show up here as exactly that. +import { colDefsFor, colsFor, fmt, intRows } from './shared.js'; + +/** + * Builds the read cases on a fresh connection: tables r__ for + * the size matrix, plus the wide and mostly-NULL sets. + * + * @param {any} db an open, cache-free connection. + * @returns {import('../harness.js').CaseSpec[]} the read cases. + */ +export function readCases(db) { + const sizes = [ + [1000, 1], + [1000, 4], + [1000, 16], + [20000, 1], + [20000, 4], + [20000, 16], + [200000, 1], + [200000, 4], + [200000, 16], + ]; + + /** @type {import('../harness.js').CaseSpec[]} */ + const cases = []; + for (const [rows, cols] of sizes) { + db.exec(`CREATE TABLE r_${rows}_${cols} (${colDefsFor(cols)})`); + db.exec(intRows(rows, colsFor(cols), `r_${rows}_${cols}`)); + cases.push({ + name: `read/all: ${fmt(rows)} rows × ${cols} cols`, + group: 'read', + ops: rows, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const rowsOut = await db.all( + `SELECT * FROM r_${rows}_${cols}`, + ); + if (rowsOut.length !== rows) + throw new Error('bad row count'); + } + }, + alloc: rows === 20000 && (cols === 1 || cols === 4), + allocIter: async (env, n) => { + for (let i = 0; i < n; i++) { + env.keep = await db.all(`SELECT * FROM r_${rows}_${cols}`); + } + }, + }); + } + + // Wide rows: 8 columns of ~100-char text — the shape that stresses + // string marshalling rather than integer conversion. + db.exec( + 'CREATE TABLE r_wide (c0 TEXT, c1 TEXT, c2 TEXT, c3 TEXT, c4 TEXT, c5 TEXT, c6 TEXT, c7 TEXT)', + ); + db.exec( + intRows( + 20000, + Array.from( + { length: 8 }, + (_, i) => `'w${i}-' || printf('%096d', x)`, + ).join(', '), + 'r_wide', + ), + ); + cases.push({ + name: 'read/all: 20,000 rows × 8 cols wide text', + group: 'read', + ops: 20000, + // ~80 MB of string allocation per sample makes GC pauses a real + // part of this case; more samples keep the median honest about it. + samples: 48, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const rowsOut = await db.all('SELECT * FROM r_wide'); + if (rowsOut.length !== 20000) throw new Error('bad row count'); + } + }, + alloc: true, + allocIter: async (env, _n) => { + env.keep = await db.all('SELECT * FROM r_wide'); + }, + }); + + // Mostly-NULL rows: 7 of 8 columns NULL — NULL marshalling and the + // fixed per-row overhead, without payload conversion work. + db.exec( + 'CREATE TABLE r_null (c0 INTEGER, c1 INTEGER, c2 INTEGER, c3 INTEGER, c4 INTEGER, c5 INTEGER, c6 INTEGER, c7 INTEGER)', + ); + db.exec( + intRows(20000, 'x, NULL, NULL, NULL, NULL, NULL, NULL, NULL', 'r_null'), + ); + cases.push({ + name: 'read/all: 20,000 rows × 8 cols mostly NULL', + group: 'read', + ops: 20000, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const rowsOut = await db.all('SELECT * FROM r_null'); + if (rowsOut.length !== 20000) throw new Error('bad row count'); + } + }, + alloc: true, + allocIter: async (env, _n) => { + env.keep = await db.all('SELECT * FROM r_null'); + }, + }); + + // Single-row get through a prepared statement: the interactive lookup. + // rowid lookup, not a table scan. + cases.push({ + name: 'read/get: single row (prepared statement)', + group: 'read', + iter: async (_env, n) => { + const stmt = db.prepare('SELECT * FROM r_20000_4 WHERE rowid = ?'); + for (let i = 0; i < n; i++) { + await stmt.get((i % 20000) + 1); + } + await stmt.finalize(); + }, + }); + + cases.push({ + name: 'read/each: 20,000 rows × 4 cols', + group: 'read', + ops: 20000, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + await new Promise((resolve, reject) => { + let seen = 0; + db.each( + 'SELECT * FROM r_20000_4', + () => { + seen++; + }, + (/** @type {Error | null} */ err) => { + if (err) reject(err); + else if (seen !== 20000) + reject(new Error('bad row count')); + else resolve(); + }, + ); + }); + } + }, + }); + + cases.push({ + name: 'read/iterate: 20,000 rows × 4 cols (for await)', + group: 'read', + ops: 20000, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + let seen = 0; + for await (const _row of db.iterate( + 'SELECT * FROM r_20000_4', + )) { + seen++; + } + if (seen !== 20000) throw new Error('bad row count'); + } + }, + }); + + cases.push({ + name: 'read/map: 20,000 rows × 4 cols', + group: 'read', + ops: 20000, + // map() returns an object keyed by the first column, not an array. + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const mapped = await db.map('SELECT c0 FROM r_20000_4'); + if ( + !Object.hasOwn(mapped, '1') || + !Object.hasOwn(mapped, '20000') + ) { + throw new Error('bad map keys'); + } + } + }, + }); + + return cases; +} diff --git a/bench/cases/shared.js b/bench/cases/shared.js new file mode 100644 index 0000000..059fdd2 --- /dev/null +++ b/bench/cases/shared.js @@ -0,0 +1,151 @@ +// Shared fixture and helper code for the bench cases. Everything here is +// setup, not measurement: the harness times `iter` bodies only. +import { mkdtempSync, rmSync } from 'node:fs'; +import { tmpdir } from 'node:os'; +import { join } from 'node:path'; + +/** + * Formats an integer with thousands separators, locale-independently, so + * case names are identical on every machine (they are the baseline keys). + * + * @param {number} n the number. + * @returns {string} formatted string. + */ +export function fmt(n) { + return String(n).replace(/\B(?=(\d{3})+(?!\d))/g, ','); +} + +/** + * SQL that materialises `n` integer rows 1..n via a recursive CTE, with + * the given per-row column expressions. + * + * @param {number} n row count. + * @param {string} cols comma-separated column expressions over `x`. + * @param {string} table target table name (default `t`). + * @returns {string} the INSERT ... SELECT statement. + */ +export function intRows(n, cols, table = 't') { + return ( + `INSERT INTO ${table} SELECT ` + + cols + + ' FROM (WITH RECURSIVE cnt(x) AS (SELECT 1 UNION ALL SELECT x+1 FROM cnt WHERE x < ' + + n + + ') SELECT x FROM cnt)' + ); +} + +/** + * Column expressions for an `x`-driven row with the requested width. + * 1 column: the integer; 4: int, real, short text, 64-byte blob; + * 16: a wider mix of ints, reals and texts. + * + * @param {number} width 1, 4 or 16 columns. + * @returns {string} comma-separated expressions. + */ +export function colsFor(width) { + if (width === 1) return 'x'; + if (width === 4) { + return "x, x + 0.5, 'text-value-' || x, zeroblob(64)"; + } + const parts = ['x', 'x + 0.5']; + for (let i = 2; i < width; i++) { + if (i % 3 === 0) parts.push(`x * ${i}`); + else if (i % 3 === 1) parts.push(`x + ${i}.5`); + else parts.push(`'col-${i}-' || x`); + } + return parts.join(', '); +} + +/** + * The column list matching `colsFor`, for CREATE TABLE. + * + * @param {number} width 1, 4 or 16 columns. + * @returns {string} comma-separated `name type` definitions. + */ +export function colDefsFor(width) { + if (width === 1) return 'c0 INTEGER'; + if (width === 4) return 'c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB'; + const parts = ['c0 INTEGER', 'c1 REAL']; + for (let i = 2; i < width; i++) { + parts.push( + i % 3 === 0 + ? `c${i} INTEGER` + : `c${i} ${i % 3 === 1 ? 'REAL' : 'TEXT'}`, + ); + } + return parts.join(', '); +} + +/** + * Waits for `n` sequential callback-style operations. Used to time the + * callback API without a promise wrapper on the per-call path. + * + * @param {number} n how many operations to run. + * @param {(i: number, done: () => void) => void} call issues operation `i`; must invoke `done` when it completes. + * @returns {Promise} resolves when all n operations completed, in order. + */ +export function seqCallbacks(n, call) { + return new Promise((resolve) => { + let i = 0; + const next = () => { + if (i === n) { + resolve(); + return; + } + call(i, next); + i++; + }; + next(); + }); +} + +/** + * Opens every connection the suite needs on one shared handle object, so + * `dispose()` can close them all at the end. In-memory databases are used + * wherever the fixture fits comfortably in RAM: they keep the OS page + * cache out of the measurements. + * + * @param {typeof import('../lib/sqlite3.js').default} sqlite3 the driver. + * @returns {{ mem: () => any, all: any[], dispose: () => Promise}} connection registry. + */ +export function connectionRegistry(sqlite3) { + /** @type {any[]} */ + const conns = []; + return { + /** + * Opens (and registers) a new in-memory database. + * + * @param {string} [label] diagnostic label. + * @returns {any} the open database. + */ + mem(label = 'mem') { + const db = new sqlite3.Database(':memory:'); + Reflect.set(db, 'benchLabel', label); + conns.push(db); + return db; + }, + all: conns, + /** Closes every registered connection. */ + async dispose() { + for (const db of conns) { + await new Promise((resolve) => db.close(resolve)); + } + conns.length = 0; + }, + }; +} + +/** + * Creates a scratch directory for file-backed fixtures (the pool bench). + * + * @returns {{ dir: string, cleanup: () => void }} the directory path and a cleanup callback. + */ +export function scratchDir() { + const dir = mkdtempSync(join(tmpdir(), 'node-sqlite3-bench-')); + return { + dir, + cleanup() { + rmSync(dir, { recursive: true, force: true }); + }, + }; +} diff --git a/bench/cases/sync.js b/bench/cases/sync.js new file mode 100644 index 0000000..d421bc6 --- /dev/null +++ b/bench/cases/sync.js @@ -0,0 +1,132 @@ +// Sync vs async (Deliverable 13 §2.2): getSync/runSync/allSync against +// their async equivalents at 1, 10, 100 and 10,000 operations. This is +// where README's "roughly 6x faster" claim lives — the harness publishes +// the curve (per-op cost as the batch grows), not one number, and every +// ratio is checked against the same-run noise floor before it is called +// a result. +// +import { fmt } from './shared.js'; + +// Both sides use the statement cache: that is the documented fast-path +// pairing (README shows getSync after cacheStatements(), and the async +// equivalent of a cached sync call is a cached async call). + +/** Batch sizes the curve is measured at. */ +const SIZES = [1, 10, 100, 10000]; + +/** + * Builds the sync-vs-async cases on two cache-enabled connections with + * identical 20,000-row read tables and empty write tables. + * + * @param {any} dbSync connection for the sync cases (cache enabled). + * @param {any} dbAsync connection for the async cases (cache enabled). + * @returns {import('../harness.js').CaseSpec[]} the sync-vs-async cases. + */ +export function syncCases(dbSync, dbAsync) { + const ddl = 'CREATE TABLE t (c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB)'; + const seed = + "INSERT INTO t SELECT x, x + 0.5, 'text-value-' || x, zeroblob(64) " + + 'FROM (WITH RECURSIVE cnt(x) AS (SELECT 1 UNION ALL SELECT x+1 FROM cnt WHERE x < 20000) SELECT x FROM cnt)'; + for (const db of [dbSync, dbAsync]) { + db.exec( + `${ddl}; CREATE TABLE wt (c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB); ${seed}`, + ); + db.cacheStatements(); + } + const GET_SQL = 'SELECT * FROM t WHERE rowid = ?'; + const RUN_SQL = 'INSERT INTO wt VALUES (?, ?, ?, ?)'; + const buf = Buffer.alloc(64); + + /** @type {import('../harness.js').CaseSpec[]} */ + const cases = []; + + for (const size of SIZES) { + const label = fmt(size); + + cases.push({ + name: `sync-vs-async/get: batch of ${label} (async)`, + group: 'sync-vs-async', + ops: size, + iter: async (_env, n) => { + for (let r = 0; r < n; r++) { + for (let i = 0; i < size; i++) { + await dbAsync.get(GET_SQL, (i % 20000) + 1); + } + } + }, + }); + cases.push({ + name: `sync-vs-async/getSync: batch of ${label}`, + group: 'sync-vs-async', + ops: size, + ratioTo: `sync-vs-async/get: batch of ${label} (async)`, + iter: (_env, n) => { + for (let r = 0; r < n; r++) { + for (let i = 0; i < size; i++) { + dbSync.getSync(GET_SQL, (i % 20000) + 1); + } + } + }, + }); + + cases.push({ + name: `sync-vs-async/run: batch of ${label} (async)`, + group: 'sync-vs-async', + ops: size, + note: 'each round clears the table first (timed, not counted)', + iter: async (_env, n) => { + for (let r = 0; r < n; r++) { + dbAsync.runSync('DELETE FROM wt'); + for (let i = 0; i < size; i++) { + await dbAsync.run( + RUN_SQL, + i, + i + 0.5, + `text-value-${i}`, + buf, + ); + } + } + }, + }); + cases.push({ + name: `sync-vs-async/runSync: batch of ${label}`, + group: 'sync-vs-async', + ops: size, + ratioTo: `sync-vs-async/run: batch of ${label} (async)`, + note: 'each round clears the table first (timed, not counted)', + iter: (_env, n) => { + for (let r = 0; r < n; r++) { + dbSync.runSync('DELETE FROM wt'); + for (let i = 0; i < size; i++) { + dbSync.runSync( + RUN_SQL, + i, + i + 0.5, + `text-value-${i}`, + buf, + ); + } + } + }, + }); + } + + // allSync against the async `read/all: 20,000 rows × 4 cols` case: + // the crossover point — one threadpool round trip amortised over + // 20,000 marshalled rows should narrow the gap to near nothing. + cases.push({ + name: 'sync-vs-async/allSync: 20,000 rows × 4 cols', + group: 'sync-vs-async', + ops: 20000, + ratioTo: 'read/all: 20,000 rows × 4 cols', + iter: (_env, n) => { + for (let i = 0; i < n; i++) { + const rows = dbSync.allSync('SELECT * FROM t'); + if (rows.length !== 20000) throw new Error('bad row count'); + } + }, + }); + + return cases; +} diff --git a/bench/cases/write.js b/bench/cases/write.js new file mode 100644 index 0000000..36f5d42 --- /dev/null +++ b/bench/cases/write.js @@ -0,0 +1,185 @@ +// Write-path cases (Deliverable 13 §2.2): prepared insert, per-call +// prepare, the statement cache, one transaction vs autocommit — the +// single biggest real-world speed lever in SQLite — and multi-statement +// exec. +// +// Every round clears its table first: the DELETE is inside the timed +// region (it has to be, the harness times whole rounds) but excluded from +// the op count, and it is identical across the compared cases, so ratios +// stay apples-to-apples. +// +// The transaction pair runs on a FILE database, not :memory: — on an +// in-memory database a commit is a memcpy and there is no journal, which +// is exactly why run 1 of this suite measured the lever as "within +// noise". The lever is real precisely where durability costs something. +import { rmSync } from 'node:fs'; +import { tmpdir } from 'node:os'; +import { join } from 'node:path'; + +/** + * Opens a private file-backed database for the transaction pair. + * + * @param {string} tag filename tag, so the two compared cases never share a file. + * @returns {Promise} env with { db, stmt, path } once open, tabled and prepared. + */ +async function txnFileSetup(tag) { + const { default: sqlite3 } = await import('../../lib/sqlite3.js'); + const path = join(tmpdir(), `node-sqlite3-bench-${tag}-${process.pid}.db`); + for (const suffix of ['', '-journal', '-wal', '-shm']) { + rmSync(path + suffix, { force: true }); + } + const db = new sqlite3.Database(path); + await new Promise((resolve, reject) => { + db.once('open', resolve); + db.once('error', reject); + }); + await db.exec('CREATE TABLE w (c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB)'); + const stmt = db.prepare('INSERT INTO w VALUES (?, ?, ?, ?)'); + return { db, stmt, path }; +} + +/** + * Closes and removes a transaction-pair file database. + * + * @param {{ db: any, stmt: any, path: string }} env the setup value. + * @returns {Promise} resolves once closed and cleaned up. + */ +async function txnFileTeardown(env) { + await new Promise((resolve) => env.stmt.finalize(resolve)); + await new Promise((resolve) => env.db.close(resolve)); + for (const suffix of ['', '-journal', '-wal', '-shm']) { + rmSync(env.path + suffix, { force: true }); + } +} + +/** + * Builds the write cases. Two connections: the shared plain one, and a + * separate one for the statement-cache case, because `cacheStatements()` + * cannot be turned off and must not leak into the other cases. + * + * @param {any} dbPlain an open, cache-free connection. + * @param {any} dbCached an open connection that this group may cache-enable. + * @returns {import('../harness.js').CaseSpec[]} the write cases. + */ +export function writeCases(dbPlain, dbCached) { + const db = dbPlain; + db.exec('CREATE TABLE w (c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB)'); + dbCached.exec('CREATE TABLE w (c0 INTEGER, c1 REAL, c2 TEXT, c3 BLOB)'); + const K = 1000; // inserts per round + const buf = Buffer.alloc(64); + + /** @type {import('../harness.js').CaseSpec[]} */ + const cases = [ + { + name: 'write/run: prepared insert ×1,000', + group: 'write', + ops: K, + note: 'each round clears the table first (timed, not counted)', + iter: async (_env, n) => { + const stmt = db.prepare('INSERT INTO w VALUES (?, ?, ?, ?)'); + for (let r = 0; r < n; r++) { + await db.exec('DELETE FROM w'); + for (let i = 0; i < K; i++) { + await stmt.run(i, i + 0.5, `text-value-${i}`, buf); + } + } + await stmt.finalize(); + }, + }, + { + name: 'write/db.run: prepare per call ×1,000', + group: 'write', + ops: K, + note: 'each round clears the table first (timed, not counted)', + iter: async (_env, n) => { + for (let r = 0; r < n; r++) { + await db.exec('DELETE FROM w'); + for (let i = 0; i < K; i++) { + await db.run( + 'INSERT INTO w VALUES (?, ?, ?, ?)', + i, + i + 0.5, + `text-value-${i}`, + buf, + ); + } + } + }, + }, + { + name: 'write/db.run: statement cache ×1,000', + group: 'write', + ops: K, + note: 'each round clears the table first (timed, not counted)', + iter: async (_env, n) => { + dbCached.cacheStatements(); + for (let r = 0; r < n; r++) { + await dbCached.exec('DELETE FROM w'); + for (let i = 0; i < K; i++) { + await dbCached.run( + 'INSERT INTO w VALUES (?, ?, ?, ?)', + i, + i + 0.5, + `text-value-${i}`, + buf, + ); + } + } + }, + }, + { + name: 'write/insert: ×1,000 in one transaction (file db)', + group: 'write', + ops: K, + targetSampleMs: 80, + ratioTo: 'write/insert: ×1,000 autocommit (file db)', + note: 'file-backed: a commit must survive a journal — the lever being measured', + setup: () => txnFileSetup('txn'), + teardown: txnFileTeardown, + iter: async (env, n) => { + for (let r = 0; r < n; r++) { + await env.db.exec('DELETE FROM w'); + await env.db.exec('BEGIN'); + for (let i = 0; i < K; i++) { + await env.stmt.run(i, i + 0.5, `text-value-${i}`, buf); + } + await env.db.exec('COMMIT'); + } + }, + }, + { + name: 'write/insert: ×1,000 autocommit (file db)', + group: 'write', + ops: K, + targetSampleMs: 80, + note: 'file-backed: a commit must survive a journal — the lever being measured', + setup: () => txnFileSetup('autocommit'), + teardown: txnFileTeardown, + iter: async (env, n) => { + for (let r = 0; r < n; r++) { + await env.db.exec('DELETE FROM w'); + for (let i = 0; i < K; i++) { + await env.stmt.run(i, i + 0.5, `text-value-${i}`, buf); + } + } + }, + }, + { + name: 'write/exec: 100-statement script', + group: 'write', + ops: 100, + iter: async (_env, n) => { + const script = Array.from( + { length: 100 }, + (_, i) => + `INSERT INTO w VALUES (${i}, ${i}.5, 's${i}', x'00')`, + ).join(';\n'); + for (let i = 0; i < n; i++) { + await db.exec(`DELETE FROM w;\n${script}`); + } + }, + }, + ]; + + return cases; +} diff --git a/bench/harness.js b/bench/harness.js new file mode 100644 index 0000000..36e8471 --- /dev/null +++ b/bench/harness.js @@ -0,0 +1,356 @@ +// The measurement engine for the v9 benchmark suite. Dependency-free by +// design (Deliverable 13 §2.1): node:perf_hooks for the clock, ~a hundred +// lines of statistics, and nothing else. +// +// The harness is built to refuse rather than misreport. Every case is +// sampled N times and reduced to a median with a bootstrap 95% confidence +// interval; the relative margin of error (RME) is half that interval over +// the median. A case whose RME exceeds the threshold is reported as +// REJECTED with its RME instead of a number that looks trustworthy — the +// failure mode this whole design exists to prevent is a quiet wrong +// number, not a loud missing one. +import { performance } from 'node:perf_hooks'; + +/** + * A small deterministic PRNG (mulberry32) so bootstrap confidence + * intervals are reproducible from the same sample set and seed. + * + * @param {number} seed 32-bit integer seed. + * @returns {() => number} uniform pseudo-random values in [0, 1). + */ +export function mulberry32(seed) { + let a = seed >>> 0; + return function () { + a |= 0; + a = (a + 0x6d2b79f5) | 0; + let t = Math.imul(a ^ (a >>> 15), 1 | a); + t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t; + return ((t ^ (t >>> 14)) >>> 0) / 4294967296; + }; +} + +/** + * Median of a numeric sample set. + * + * @param {number[]} xs samples. + * @returns {number} the median (mean of the two central values for even n). + */ +export function median(xs) { + if (xs.length === 0) throw new Error('median of empty sample set'); + const sorted = [...xs].sort((a, b) => a - b); + const mid = sorted.length >> 1; + return sorted.length % 2 + ? sorted[mid] + : (sorted[mid - 1] + sorted[mid]) / 2; +} + +/** + * Percentile of a numeric sample set with linear interpolation between + * adjacent ranks. + * + * @param {number[]} xs samples. + * @param {number} p percentile in [0, 1]. + * @returns {number} the interpolated percentile value. + */ +export function percentile(xs, p) { + if (xs.length === 0) throw new Error('percentile of empty sample set'); + const sorted = [...xs].sort((a, b) => a - b); + const idx = p * (sorted.length - 1); + const lo = Math.floor(idx); + const hi = Math.ceil(idx); + if (lo === hi) return sorted[lo]; + return sorted[lo] + (sorted[hi] - sorted[lo]) * (idx - lo); +} + +/** + * Mean of a numeric sample set. + * + * @param {number[]} xs samples. + * @returns {number} the arithmetic mean. + */ +export function mean(xs) { + if (xs.length === 0) throw new Error('mean of empty sample set'); + let sum = 0; + for (const x of xs) sum += x; + return sum / xs.length; +} + +/** + * Bootstrap confidence interval for the median, and the relative margin of + * error derived from it. The median is the headline statistic because GC + * and JIT pauses make the mean tail-sensitive; bootstrapping propagates + * the sample spread into an honest interval around it. + * + * RME = (ciHigh - ciLow) / 2 / median, as a fraction of the median. + * + * @param {number[]} xs samples (n >= 2). + * @param {number} resamples bootstrap resample count. + * @param {() => number} rng seeded uniform [0,1) generator. + * @returns {{ rme: number, ciLow: number, ciHigh: number }} interval over the sample values. + */ +export function bootstrapMedianRme(xs, resamples, rng) { + const n = xs.length; + if (n < 2) { + return { rme: Number.POSITIVE_INFINITY, ciLow: xs[0], ciHigh: xs[0] }; + } + const medians = new Array(resamples); + const pick = new Array(n); + for (let r = 0; r < resamples; r++) { + for (let i = 0; i < n; i++) pick[i] = xs[(rng() * n) | 0]; + medians[r] = median(pick); + } + medians.sort((a, b) => a - b); + const ciLow = percentile(medians, 0.025); + const ciHigh = percentile(medians, 0.975); + const med = median(xs); + return { + rme: med > 0 ? (ciHigh - ciLow) / 2 / med : Number.POSITIVE_INFINITY, + ciLow, + ciHigh, + }; +} + +/** + * Full summary of one case's per-operation samples. + * + * @param {number[]} xs per-operation values (ms). + * @param {{ seed?: number, resamples?: number }} [opts] bootstrap controls. + * @returns {{ n: number, median: number, p95: number, min: number, max: number, mean: number, rme: number, ciLow: number, ciHigh: number }} reduced statistics. + */ +export function summarise(xs, opts) { + const rng = mulberry32(opts?.seed ?? 0x5eed1337); + const { rme, ciLow, ciHigh } = bootstrapMedianRme( + xs, + opts?.resamples ?? 2000, + rng, + ); + return { + n: xs.length, + median: median(xs), + p95: percentile(xs, 0.95), + min: Math.min(...xs), + max: Math.max(...xs), + mean: mean(xs), + rme, + ciLow, + ciHigh, + }; +} + +/** @typedef {Object} CaseSpec + * @property {string} name case name, unique across the suite. + * @property {string} group group heading the case is reported under. + * @property {(env: any, n: number) => Promise | void} iter performs `n` logical operations; timed once per sample. Sync paths run a tight loop with no awaits; async paths await each operation, because awaiting is the usage pattern being measured. + * @property {() => Promise | any} [setup] run once before warmup. + * @property {(env: any) => Promise | void} [teardown] run once after sampling. + * @property {number} [ops] logical operations per single `iter` call at n=1 (per-op values divide by n*ops); default 1. + * @property {number} [samples] override the sample count for this case. + * @property {number} [targetSampleMs] override the per-sample duration target — for cases whose cost is dominated by OS-level jitter (journal/fsync churn), longer samples average more of it away. + * @property {boolean} [alloc] also measure allocation per operation (forced-GC deltas). + * @property {(env: any, n: number) => Promise | void} [allocIter] iter variant that stores only its final iteration's output in `env.keep` — the retained-batch convention `measureAlloc` divides by; see its doc comment. + * @property {number} [allocSamples] override the allocation sample count. + * @property {string} [ratioTo] name of another case to publish an A/B ratio against. + * @property {string} [note] one-line caveat printed with the case. + */ + +/** @typedef {Object} HarnessConfig + * @property {number} warmupMs fixed wall-clock warmup budget per case. + * @property {number} targetSampleMs samples are scaled to roughly this duration. + * @property {number} minSampleMs recalibrate if samples come in below this. + * @property {number} samples sample count per case (>= 30 per §2.1). + * @property {number} rmeThresholdPct reject cases whose RME exceeds this. + * @property {number} allocSamples forced-GC allocation sample count per case. + */ + +/** @type {HarnessConfig} */ +export const DEFAULT_CONFIG = { + warmupMs: 500, + targetSampleMs: 20, + minSampleMs: 10, + samples: 32, + rmeThresholdPct: 5, + allocSamples: 16, +}; + +/** + * Warms the iter path for a fixed wall-clock budget with a growing batch, + * and returns the estimated cost of one logical operation. + * + * @param {CaseSpec} spec the case. + * @param {any} env the case's setup value. + * @param {number} budgetMs how long to warm up. + * @param {number} floorOps minimum logical operations to have run. + * @returns {Promise} estimated ms per single operation. + */ +async function warmup(spec, env, budgetMs, floorOps) { + const start = performance.now(); + let ran = 0; + let n = 1; + while (true) { + await spec.iter(env, n); + ran += n; + const elapsed = performance.now() - start; + if (elapsed >= budgetMs && ran >= floorOps) { + return elapsed / ran; + } + // Grow the batch so the budget is reached in O(log) calls even for + // sub-microsecond operations. + n = Math.min(n * 2, 1 << 20); + } +} + +/** + * Measures one case: warm up for a fixed wall-clock budget, auto-scale the + * per-sample batch so each sample is >= 10 ms (making clock resolution + * irrelevant), then take N samples and reduce them with `summarise`. + * + * @param {CaseSpec} spec the case. + * @param {HarnessConfig} cfg harness configuration. + * @returns {Promise<{ spec: CaseSpec, batch: number, perOpMs: ReturnType, sampleMs: number, rejected: boolean }>} the measurement. + */ +export async function measure(spec, cfg) { + const env = spec.setup ? await spec.setup() : {}; + try { + const perOpMs = await warmup(spec, env, cfg.warmupMs, 3); + const target = spec.targetSampleMs ?? cfg.targetSampleMs; + let batch = Math.max(1, Math.round(target / perOpMs)); + const ops = spec.ops ?? 1; + const n = spec.samples ?? cfg.samples; + + /** @param {number} count @returns {Promise} */ + const takeSamples = async (count) => { + const perOp = []; + for (let s = 0; s < count; s++) { + const t0 = performance.now(); + await spec.iter(env, batch); + perOp.push((performance.now() - t0) / (batch * ops)); + } + return perOp; + }; + + let perOp = await takeSamples(Math.min(n, 4)); + + // One recalibration pass: if warm-up made the estimate stale and + // samples came out below the floor, rescale and start over. + const observed = median(perOp) * batch * ops; + if (observed > 0 && observed < cfg.minSampleMs) { + batch = Math.max(1, Math.round((batch * target) / observed)); + perOp = await takeSamples(n); + } else if (perOp.length < n) { + perOp.push(...(await takeSamples(n - perOp.length))); + } + + const stats = summarise(perOp); + return { + spec, + batch, + perOpMs: stats, + sampleMs: stats.median * batch * ops, + rejected: stats.rme * 100 > cfg.rmeThresholdPct, + }; + } finally { + if (spec.teardown) await spec.teardown(env); + } +} + +/** Allocation counters read per sample. `rss` is recorded but expected to + * be too noisy to trust — publishing its rejection is part of the output. */ +const ALLOC_COUNTERS = /** @type {const} */ ([ + 'heapUsed', + 'external', + 'arrayBuffers', + 'rss', +]); + +/** + * Measures allocation per operation via process.memoryUsage() deltas + * around a forced GC (--expose-gc). The convention that makes the delta + * mean something: `allocIter` must store only its FINAL iteration's + * output in `env.keep` (see bench/cases/read.js). The harness drops the + * previous sample's `env.keep` and GCs before reading "before", runs + * `reps` iterations, GCs again with the last output still live, and + * reads "after" — so the delta is exactly one iteration's output. + * Per-op bytes therefore divide by `ops` (one iteration), not `reps`. + * + * External buffers — the blob marshalling path (CellToJS in + * src/convert.cc) — do not live in heapUsed at all; they surface in + * `external` and `arrayBuffers`. Each counter is reduced with the same + * median/RME treatment as time, and a counter whose RME exceeds the + * threshold is reported as too noisy rather than published. + * + * @param {CaseSpec} spec the case. + * @param {HarnessConfig} cfg harness configuration. + * @returns {Promise>} per-counter allocation stats, or a skip reason. + */ +export async function measureAlloc(spec, cfg) { + if (typeof globalThis.gc !== 'function') { + return { skipped: 'allocation needs --expose-gc' }; + } + const env = spec.setup ? await spec.setup() : {}; + try { + const iter = spec.allocIter ?? spec.iter; + + // Warm the alloc path, then calibrate reps like measure() does. + const perOpMs = await warmup(spec, env, 100, 2); + const reps = Math.max(1, Math.round(cfg.targetSampleMs / perOpMs)); + const n = spec.allocSamples ?? cfg.allocSamples; + // One untimed call so the allocIter variant itself is warm. + await iter(env, reps); + + const raw = {}; + for (const k of ALLOC_COUNTERS) raw[k] = []; + for (let s = 0; s < n; s++) { + env.keep = null; + globalThis.gc(); + globalThis.gc(); + const before = process.memoryUsage(); + await iter(env, reps); + globalThis.gc(); + globalThis.gc(); + const after = process.memoryUsage(); + for (const k of ALLOC_COUNTERS) { + // Retained-batch convention: the delta is one iteration's + // retained output, so the divisor is one iteration's ops. + raw[k].push((after[k] - before[k]) / (spec.ops ?? 1)); + } + } + + const out = {}; + for (const k of ALLOC_COUNTERS) { + const stats = summarise(raw[k]); + const zero = raw[k].every((v) => v === 0); + out[k] = { + bytesPerOp: stats.median, + rme: stats.rme, + // `zero` marks a counter that provably moved by nothing — + // a real answer ("no allocation on this counter"), unlike + // `rejected`, which means "moved, but too erratically to + // attach a number to". + zero, + rejected: !zero && stats.rme * 100 > cfg.rmeThresholdPct, + }; + } + return out; + } finally { + if (spec.teardown) await spec.teardown(env); + } +} + +/** + * The noise floor: the same case measured twice in the same run, as a + * relative difference. Any A/B ratio smaller than this is indistinguishable + * from measuring nothing and must not be reported as a result. + * + * @param {{ perOpMs: { median: number } }} a first measurement. + * @param {{ perOpMs: { median: number } }} b second measurement of the same case. + * @returns {{ relativePct: number }} the relative difference, in percent. + */ +export function noiseFloor(a, b) { + const x = a.perOpMs.median; + const y = b.perOpMs.median; + const ref = (x + y) / 2; + return { + relativePct: + ref > 0 ? (Math.abs(y - x) / ref) * 100 : Number.POSITIVE_INFINITY, + }; +} diff --git a/bench/index.js b/bench/index.js new file mode 100644 index 0000000..761f8a4 --- /dev/null +++ b/bench/index.js @@ -0,0 +1,660 @@ +// The v9 benchmark suite entry point (Deliverable 13). +// +// node --expose-gc bench/index.js # run, print table + JSON +// node --expose-gc bench/index.js --filter sync # subset +// node --expose-gc bench/index.js --compare # vs bench/baseline.json (+ better-sqlite3 if installed) +// node --expose-gc bench/index.js --write-baseline # regenerate this environment's baseline entry +// +// Design rule: the harness refuses rather than misreports. Cases whose +// relative margin of error exceeds the gate are REJECTED, ratios smaller +// than the same-run noise floor are marked as noise, and allocation +// counters too noisy to trust are published as exactly that. +import { execFileSync } from 'node:child_process'; +import { existsSync, readFileSync, writeFileSync } from 'node:fs'; +import { cpus } from 'node:os'; +import { dirname, join } from 'node:path'; +import { fileURLToPath } from 'node:url'; + +import sqlite3 from '../lib/sqlite3.js'; +import { buildSuite } from './cases/index.js'; +import { + DEFAULT_CONFIG, + measure, + measureAlloc, + noiseFloor, +} from './harness.js'; + +const ROOT = join(dirname(fileURLToPath(import.meta.url)), '..'); +const DEFAULT_BASELINE = join(ROOT, 'bench', 'baseline.json'); + +/** + * Parses the CLI flags this suite understands. + * + * @param {string[]} argv arguments after the script path. + * @returns {{ filter: string[] | null, compare: boolean, baselinePath: string, writeBaseline: boolean, baselineFrom: string | null, jsonPath: string | null, strict: boolean, list: boolean }} parsed options. + */ +function parseArgs(argv) { + /** @type {ReturnType} */ + const opts = { + filter: null, + compare: false, + baselinePath: DEFAULT_BASELINE, + writeBaseline: false, + baselineFrom: null, + jsonPath: null, + strict: false, + list: false, + }; + for (let i = 0; i < argv.length; i++) { + const arg = argv[i]; + // pnpm forwards a bare `--` to the script rather than consuming + // it, so `pnpm run bench:compare -- --json out.json` arrives with + // the separator still in argv. Rejecting it made the CI bench step + // exit 1 on a usage error and measure nothing — under + // continue-on-error, silently. + if (arg === '--') continue; + if (arg === '--compare') opts.compare = true; + else if (arg === '--write-baseline') opts.writeBaseline = true; + else if (arg === '--baseline-from') + opts.baselineFrom = argv[++i] ?? null; + else if (arg === '--strict') opts.strict = true; + else if (arg === '--list') opts.list = true; + else if (arg === '--filter') { + opts.filter = (argv[++i] ?? '') + .split(',') + .map((s) => s.trim()) + .filter(Boolean); + } else if (arg === '--baseline') { + opts.baselinePath = argv[++i] ?? DEFAULT_BASELINE; + } else if (arg === '--json') { + opts.jsonPath = argv[++i] ?? null; + } else { + console.error(`unknown option: ${arg}`); + console.error(USAGE); + process.exit(1); + } + } + return opts; +} + +const USAGE = `usage: node --expose-gc bench/index.js [--filter substr[,substr...]] [--compare] + [--baseline ] [--write-baseline] [--json ] [--strict] [--list] + + --compare compare against the baseline (default bench/baseline.json) + and try to load better-sqlite3 as a mirror (never a + devDependency; npm i --no-save better-sqlite3 first) + --write-baseline write this run's results as the baseline entry for the + current platform/arch — a deliberate, separate act + --baseline-from + merge a recorded run's JSON output as the baseline entry + for ITS recorded environment (promote a CI artifact + without re-running there) + --filter run only cases whose name or group matches a substring + --strict exit non-zero if ANY case is rejected by the RME gate + --json also write the JSON result block to a file + +exit codes: 0 ok · 1 usage · 2 baseline regression(s) · 3 nothing measured`; + +/** + * Collects the pinned environment block (§2.1). + * + * @returns {Record} environment description. + */ +function environment() { + let gitSha = 'unknown'; + let gitDirty = false; + try { + gitSha = execFileSync('git', ['rev-parse', '--short', 'HEAD'], { + cwd: ROOT, + encoding: 'utf8', + }).trim(); + gitDirty = + execFileSync('git', ['status', '--porcelain'], { + cwd: ROOT, + encoding: 'utf8', + }).trim().length > 0; + } catch { + // not a git checkout — keep 'unknown' + } + const pkg = JSON.parse(readFileSync(join(ROOT, 'package.json'), 'utf8')); + return { + node: process.version, + platform: process.platform, + arch: process.arch, + cpuModel: cpus()[0]?.model ?? 'unknown', + cpuCount: cpus().length, + container: existsSync('/.dockerenv') ? 'docker' : 'none', + sqliteVersion: /** @type {any} */ (sqlite3).VERSION, + packageVersion: pkg.version, + gitSha: gitDirty ? `${gitSha}+dirty` : gitSha, + exposeGc: typeof globalThis.gc === 'function', + }; +} + +/** + * Formats a per-operation duration for the human table. + * + * @param {number} ms milliseconds. + * @returns {string} value with unit. + */ +function fmtDuration(ms) { + if (ms < 0.001) return `${(ms * 1e6).toFixed(0)} ns`; + if (ms < 1) return `${(ms * 1000).toFixed(2)} µs`; + if (ms < 1000) return `${ms.toFixed(2)} ms`; + return `${(ms / 1000).toFixed(2)} s`; +} + +/** + * Formats bytes per operation for the allocation table. + * + * @param {number} bytes bytes. + * @returns {string} value with unit. + */ +function fmtBytes(bytes) { + const sign = bytes < 0 ? '-' : '+'; + const abs = Math.abs(bytes); + if (abs >= 1024 * 1024) + return `${sign}${(abs / 1024 / 1024).toFixed(2)} MB`; + if (abs >= 1024) return `${sign}${(abs / 1024).toFixed(1)} KB`; + return `${sign}${abs.toFixed(0)} B`; +} + +/** + * Formats a ratio for the ratios table. + * + * @param {number} r ratio. + * @returns {string} formatted ratio. + */ +function fmtRatio(r) { + if (!Number.isFinite(r)) return '∞'; + return `${r.toFixed(2)}×`; +} + +/** @type {any[]} */ const results = []; +/** @type {{ case: string, alloc: any }[]} */ const allocResults = []; + +/** + * The main run: build fixtures, calibrate, measure every case, print. + * + * @returns {Promise} process exit code. + */ +async function main() { + const opts = parseArgs(process.argv.slice(2)); + const cfg = { ...DEFAULT_CONFIG }; + const env = environment(); + + console.log('@appthreat/sqlite3 benchmark suite'); + console.log( + `${env.node} | ${env.platform} | ${env.arch} | ${env.cpuModel} (${env.cpuCount} cpus)`, + ); + console.log( + `SQLite ${env.sqliteVersion} | package ${env.packageVersion} | git ${env.gitSha} | container: ${env.container}`, + ); + console.log( + `config: ${cfg.samples} samples/case, ${cfg.warmupMs} ms warmup, sample target ${cfg.targetSampleMs} ms (floor ${cfg.minSampleMs} ms), ` + + `RME gate ${cfg.rmeThresholdPct}% (bootstrap 2000×, seeded), alloc samples ${cfg.allocSamples}`, + ); + if (!env.exposeGc) { + console.log( + 'WARNING: --expose-gc is off — allocation measurement will be skipped', + ); + } + console.log(''); + + // Promotion path: --baseline-from merges an already-recorded run and + // exits without measuring anything (used for CI artifacts). + if (opts.baselineFrom) { + promoteResultsToBaseline(opts.baselineFrom, opts.baselinePath); + return 0; + } + + const suite = await buildSuite(sqlite3, { compare: opts.compare }); + for (const skip of suite.skipped) console.log(`skipped: ${skip}`); + if (suite.skipped.length > 0) console.log(''); + + /** @type {any[]} */ + let cases = suite.cases; + if (opts.filter) { + cases = cases.filter( + (c) => + opts.filter?.some( + (f) => c.name.includes(f) || c.group.includes(f), + ) ?? false, + ); + } + + if (opts.list) { + for (const c of cases) console.log(`${c.group.padEnd(16)} ${c.name}`); + await suite.dispose(); + return 0; + } + + // Calibration: the first two cases are the A/A pair. Their same-run + // difference is the noise floor every ratio is checked against. + let floor = { relativePct: Number.POSITIVE_INFINITY }; + let lastGroup = ''; + + for (const spec of cases) { + if (spec.group !== lastGroup) { + lastGroup = spec.group; + console.log( + `\n── ${spec.group} ${'─'.repeat(Math.max(1, 66 - spec.group.length))}`, + ); + } + /** @type {any} */ + let result; + try { + result = await measure(spec, cfg); + } catch (err) { + console.log( + ` ERROR ${spec.name}: ${/** @type {Error} */ (err).message}`, + ); + results.push({ + name: spec.name, + group: spec.group, + error: /** @type {Error} */ (err).message, + }); + continue; + } + results.push(result); + if (result.rejected) { + // The range is disclosed on a rejection so a reader can still + // see the magnitude — but no median is claimed for it. + console.log( + ` REJECTED ${spec.name}: RME ${(result.perOpMs.rme * 100).toFixed(1)}% exceeds ` + + `${cfg.rmeThresholdPct}% — no median reported (samples too noisy to trust; ` + + `observed ${fmtDuration(result.perOpMs.min)}–${fmtDuration(result.perOpMs.max)}/op)`, + ); + } else { + console.log( + ` ${spec.name.padEnd(58)} ${fmtDuration(result.perOpMs.median).padStart(11)}/op` + + ` RME ${(result.perOpMs.rme * 100).toFixed(1)}%` + + ` p95 ${fmtDuration(result.perOpMs.p95)}` + + ` min ${fmtDuration(result.perOpMs.min)}` + + ` ×${result.batch}`, + ); + } + if (spec.note) console.log(` · ${spec.note}`); + + if (spec.alloc) { + const alloc = await measureAlloc(spec, cfg); + allocResults.push({ case: spec.name, alloc }); + } + + if ( + results.length === 2 && + results[0].spec?.name === 'calibration/cached get (A)' + ) { + floor = noiseFloor(results[0], results[1]); + console.log( + `\n noise floor: A vs A = ${floor.relativePct.toFixed(1)}% — ` + + 'any smaller difference is noise, not a result\n', + ); + } + } + + // ── ratios ──────────────────────────────────────────────────────────── + const byName = new Map( + results.filter((r) => r.spec).map((r) => [r.spec.name, r]), + ); + /** @type {{ a: string, b: string, ratio: number, withinNoise: boolean }[]} */ + const ratios = []; + for (const r of results) { + if (!r.spec?.ratioTo || r.rejected) continue; + const target = byName.get(r.spec.ratioTo); + if (!target || target.rejected) continue; + const ratio = target.perOpMs.median / r.perOpMs.median; + const withinNoise = Math.abs(ratio - 1) * 100 < floor.relativePct; + ratios.push({ a: r.spec.name, b: r.spec.ratioTo, ratio, withinNoise }); + } + if (ratios.length > 0) { + console.log( + `\n── ratios (how much faster the case is than its target; must clear the ${floor.relativePct.toFixed(1)}% noise floor to count) ──`, + ); + for (const r of ratios) { + // ratio = target median ÷ case median: >1 means the case is + // faster than its target, <1 means slower. The wording spells + // out which, so an inverted-looking number cannot mislead. + const faster = r.ratio >= 1; + const magnitude = faster ? r.ratio : 1 / r.ratio; + const word = faster ? 'faster' : 'slower'; + if (r.withinNoise) { + console.log( + ` ${r.a.padEnd(58)} ${fmtRatio(magnitude).padStart(8)} ${word} ~ within noise floor — not a result`, + ); + } else { + console.log( + ` ${r.a.padEnd(58)} ${fmtRatio(magnitude).padStart(8)} ${word} than ${r.b}`, + ); + } + } + } + + // ── allocation ──────────────────────────────────────────────────────── + if (allocResults.length > 0) { + console.log( + '\n── allocation per op (forced-GC process.memoryUsage() deltas; heapUsed misses external buffers — watch external/arrayBuffers) ──', + ); + for (const { case: name, alloc } of allocResults) { + console.log(` ${name}`); + if ('skipped' in alloc) { + console.log(` skipped: ${alloc.skipped}`); + continue; + } + for (const [counter, stats] of Object.entries(alloc)) { + const s = /** @type {any} */ (stats); + const line = ` ${counter.padEnd(13)} ${fmtBytes(s.bytesPerOp).padStart(11)}/op`; + if (s.zero) { + console.log(`${line} — nothing allocated on this counter`); + } else if (s.rejected) { + console.log( + `${line} RME ${(s.rme * 100).toFixed(0)}% ✗ too noisy to publish`, + ); + } else { + console.log(`${line} RME ${(s.rme * 100).toFixed(0)}%`); + } + } + } + } + + // ── JSON ───────────────────────────────────────────────────────────── + const doc = { + schemaVersion: 1, + generatedAt: new Date().toISOString(), + environment: env, + config: cfg, + noiseFloorPct: Number.isFinite(floor.relativePct) + ? Number(floor.relativePct.toFixed(2)) + : null, + cases: results.map((r) => + r.spec + ? { + name: r.spec.name, + group: r.spec.group, + ops: r.spec.ops ?? 1, + batch: r.batch, + perOpMs: { + median: r.perOpMs.median, + p95: r.perOpMs.p95, + min: r.perOpMs.min, + mean: r.perOpMs.mean, + rme: r.perOpMs.rme, + ciLow: r.perOpMs.ciLow, + ciHigh: r.perOpMs.ciHigh, + n: r.perOpMs.n, + }, + rejected: r.rejected, + error: undefined, + } + : { name: r.name, group: r.group, error: r.error }, + ), + ratios, + allocations: allocResults, + }; + const json = JSON.stringify(doc, null, 2); + if (opts.jsonPath) writeFileSync(opts.jsonPath, `${json}\n`); + console.log('\n── results.json ──'); + console.log(json); + + // ── baseline write / compare ───────────────────────────────────────── + let exitCode = 0; + const sig = `${env.platform}-${env.arch}`; + const measured = results.filter((r) => r.spec && !r.rejected && !r.error); + if (opts.writeBaseline) { + const cases = Object.fromEntries( + measured.map((r) => [ + r.spec.name, + { + medianPerOpMs: r.perOpMs.median, + rme: r.perOpMs.rme, + n: r.perOpMs.n, + }, + ]), + ); + writeBaselineEntry(opts.baselinePath, sig, { + capturedAt: doc.generatedAt, + environment: env, + config: cfg, + noiseFloorPct: doc.noiseFloorPct, + cases, + }); + console.log( + `\nbaseline written: ${sig} → ${measured.length} cases (${opts.baselinePath})`, + ); + } + + if (opts.compare) { + exitCode = compareBaseline( + opts.baselinePath, + sig, + measured, + floor, + cfg, + ); + } + + await suite.dispose(); + + const rejectedCount = results.filter((r) => r.rejected).length; + if (measured.length === 0) { + console.log('\nNOTHING MEASURED: every case was rejected or errored'); + exitCode = exitCode === 2 ? 2 : 3; + } else if (opts.strict && rejectedCount > 0) { + console.log( + `\n--strict: ${rejectedCount} case(s) rejected by the RME gate`, + ); + exitCode = exitCode === 2 ? 2 : 3; + } + + return exitCode; +} + +const BASELINE_NOTE = + 'Per-environment medians captured deliberately via `pnpm run bench:update`. ' + + 'Compare only within one platform-arch signature; ratios travel across ' + + 'platforms, absolute milliseconds do not. See docs/performance.md.'; + +/** + * Upserts one environment entry in the baseline file. + * + * @param {string} path baseline file path. + * @param {string} sig environment signature (platform-arch). + * @param {{ capturedAt: string, environment: Record, config: Record, noiseFloorPct: number | null, cases: Record }} entry the entry to write. + * @returns {void} + */ +function writeBaselineEntry(path, sig, entry) { + /** @type {any} */ + let baseline = { schemaVersion: 1, note: BASELINE_NOTE, environments: {} }; + if (existsSync(path)) { + try { + baseline = JSON.parse(readFileSync(path, 'utf8')); + } catch { + console.error(`baseline file unreadable, starting fresh: ${path}`); + } + } + baseline.environments ??= {}; + baseline.environments[sig] = entry; + writeFileSync(path, `${JSON.stringify(baseline, null, 2)}\n`); +} + +/** + * Merges a recorded results JSON (from --json) into the baseline as the + * entry for the environment it was recorded on — the promote-a-CI-artifact + * path, so a linux-x64 baseline can be captured on a runner without + * anyone hand-editing the file. + * + * @param {string} resultsPath path to a results JSON file. + * @param {string} baselinePath baseline file path. + * @returns {void} + */ +function promoteResultsToBaseline(resultsPath, baselinePath) { + const doc = /** @type {any} */ ( + JSON.parse(readFileSync(resultsPath, 'utf8')) + ); + const e = doc.environment ?? {}; + const sig = `${e.platform}-${e.arch}`; + const cases = {}; + for (const c of doc.cases ?? []) { + if (c.perOpMs && !c.rejected && !c.error) { + cases[c.name] = { + medianPerOpMs: c.perOpMs.median, + rme: c.perOpMs.rme, + n: c.perOpMs.n, + }; + } + } + writeBaselineEntry(baselinePath, sig, { + capturedAt: doc.generatedAt, + environment: e, + config: doc.config, + noiseFloorPct: doc.noiseFloorPct ?? null, + cases, + }); + console.log( + `\nbaseline merged from ${resultsPath}: ${sig} → ${Object.keys(cases).length} cases (${baselinePath})`, + ); +} + +/** + * Compares this run's medians against the baseline entry for the current + * environment signature. FAIL needs Δ > max(10%, 2× the run's noise + * floor) so a noisy run cannot manufacture a regression verdict. + * + * @param {string} path baseline file path. + * @param {string} sig environment signature (platform-arch). + * @param {any[]} measured non-rejected results. + * @param {{ relativePct: number }} floor this run's noise floor. + * @param {any} cfg harness config. + * @returns {number} 2 when regression(s) were found, else 0. + */ +function compareBaseline(path, sig, measured, floor, _cfg) { + if (!existsSync(path)) { + console.log( + `\nbaseline comparison: no baseline file at ${path} — reporting only`, + ); + return 0; + } + /** @type {any} */ + let baseline; + try { + baseline = JSON.parse(readFileSync(path, 'utf8')); + } catch (err) { + console.log( + `\nbaseline comparison: unreadable baseline (${/** @type {Error} */ (err).message})`, + ); + return 0; + } + const entry = baseline.environments?.[sig]; + if (!entry) { + console.log( + `\nbaseline comparison: no entry for ${sig} (have: ${Object.keys(baseline.environments ?? {}).join(', ') || 'none'}) — reporting only.\n` + + 'To make this environment comparable, run `pnpm run bench:update` and commit the file.', + ); + return 0; + } + + const failGate = Math.max( + 10, + 2 * (Number.isFinite(floor.relativePct) ? floor.relativePct : 0), + ); + + // Whole-machine drift, reported but deliberately NOT applied. + // + // The problem it describes is real: the A/A noise floor measures + // variance *within* one process and is blind to the machine being + // globally slower than when the baseline was captured. The first + // committed baseline was captured on an exceptionally quiet run (its + // recorded floor: 0.17%, against 1.6–3.4% for ordinary runs), and + // re-running the unmodified tree against it produced 38 FAIL / 37 WARN + // of 85. That is fixed by capturing baselines from representative runs, + // not by arithmetic here — with a representative baseline the same tree + // reports 0 FAIL. + // + // Dividing the calibration delta out as a drift correction was tried + // and is unsound: `calibration/cached get` reads a row, so it runs the + // same marshalling path most cases do. A real regression slows the + // control too, the "drift" factor absorbs part of the regression, and + // the correction subtracts it from every case. Measured: a 512 B + // per-integer-cell pessimisation in CellToJS read +19–24% FAIL + // uncorrected and collapsed to +6.1% WARN once corrected. A control + // that shares the hot path cannot normalise that path. + // + // So the number is printed as a diagnostic — a large value means the + // two runs are not comparable and the answer is a rerun — and every + // verdict below is taken against the raw baseline. + const calibration = measured + .filter( + (r) => r.spec.group === 'calibration' && entry.cases?.[r.spec.name], + ) + .map((r) => r.perOpMs.median / entry.cases[r.spec.name].medianPerOpMs) + .sort((a, b) => a - b); + const driftPct = calibration.length + ? (calibration[calibration.length >> 1] - 1) * 100 + : Number.NaN; + console.log( + `\n── vs baseline ${sig} (${entry.capturedAt}, git ${entry.environment?.gitSha ?? '?'}) — FAIL at >${failGate.toFixed(0)}%, WARN at >5% ──`, + ); + if (calibration.length) { + console.log( + ` calibration vs baseline: ${driftPct >= 0 ? '+' : ''}${driftPct.toFixed(1)}% ` + + '(diagnostic only, NOT applied to the deltas below — the ' + + 'calibration case shares the marshalling path, so a real ' + + 'regression moves it too)', + ); + if (Math.abs(driftPct) > 10) { + console.log( + ' NOTE: calibration should barely move between runs. This much ' + + 'means either the machine drifted or the change under test ' + + 'reaches the read path — reread the per-case pattern below ' + + 'rather than any single verdict, and rerun on a quiet machine.', + ); + } + } + /** @type {string[]} */ + const failures = []; + /** @type {string[]} */ + const warnings = []; + let unmeasured = 0; + let compared = 0; + for (const r of measured) { + const base = entry.cases?.[r.spec.name]; + if (!base) continue; + compared++; + const delta = + ((r.perOpMs.median - base.medianPerOpMs) / base.medianPerOpMs) * + 100; + const mark = + delta > failGate + ? 'FAIL' + : delta > 5 + ? 'WARN' + : delta < -5 + ? 'improved' + : 'ok'; + if (delta > failGate) failures.push(r.spec.name); + else if (delta > 5) warnings.push(r.spec.name); + console.log( + ` ${String(mark).padEnd(8)} ${r.spec.name.padEnd(58)} ${delta >= 0 ? '+' : ''}${delta.toFixed(1)}%`, + ); + } + for (const [name, base] of Object.entries(entry.cases ?? {})) { + const cur = measured.find((r) => r.spec.name === name); + if (!cur) { + unmeasured++; + console.log( + ` UNMEASURED ${name} (baseline ${/** @type {any} */ (base).medianPerOpMs?.toExponential(2)} ms/op — not run or rejected here)`, + ); + } + } + console.log( + `\nbaseline summary: ${compared} compared, ${failures.length} fail, ${warnings.length} warn, ${unmeasured} unmeasured`, + ); + return failures.length > 0 ? 2 : 0; +} + +main() + .then((code) => process.exit(code)) + .catch((err) => { + console.error(err); + process.exit(1); + }); diff --git a/binding.gyp b/binding.gyp index f819dcc..11fd9bf 100644 --- a/binding.gyp +++ b/binding.gyp @@ -24,6 +24,19 @@ ["sqlite != 'internal'", { "include_dirs": [ "` to promote a CI artifact (this is how a +`linux-x64` entry would first be captured — run the job once, download +the artifact, promote, commit). + +### Cross-run drift + +**A calibration fact learned the hard way**: comparing two quiet runs of +the *identical binary* on the same machine moved two +threadpool-dominated cases by +11–16%, while each run's own A/A noise +floor was 0.2–4.3%. Within one process, ratios are extremely reliable; +across processes, individual round-trip-shaped cases can move by more +than the 10% gate even though most cases do not (see the distribution +below). + +The sharper lesson is about the baseline, not the method. A full +`bench:compare` of the **unmodified** tree that produced the first +committed baseline reported **38 FAIL / 37 WARN out of 85**. That looked +like proof the comparison was unusable — but comparing two ordinary runs +against *each other* gives p50 1.0% / p95 5.0% on the median across all +85 cases, so the measurement reproduces fine. (`min` was tested as a +more robust statistic and is worse: p95 8.7%. The median stays.) + +What had gone wrong was the baseline itself: it was captured on an +exceptionally quiet run, with a recorded noise floor of **0.17%** against +1.6–3.4% for ordinary runs. It encoded a best-case machine state that +nothing else reaches, so every later run read as a broad regression. + +**Capture a baseline from a representative run, not the best one you +ever saw.** The floor recorded in each baseline entry is there to be +checked: an entry whose floor is far below what the machine normally +produces will manufacture regressions. + +The comparison prints the calibration group's own delta on every run as +a **diagnostic**, and deliberately does not correct for it: + +``` +calibration vs baseline: +4.7% (diagnostic only, NOT applied to the deltas below +— the calibration case shares the marshalling path, so a real regression moves it too) +``` + +Dividing that factor out was tried, and it is unsound. `calibration/ +cached get` reads a row, so it runs the same marshalling path most cases +do: a genuine regression slows the control as well, the factor absorbs +part of the regression, and the correction then subtracts it from every +case. Measured — a 512 B per-integer-cell pessimisation in `CellToJS` +reads **+19–24% FAIL** against a raw baseline and collapses to **+6.1% +WARN** once "corrected". A control that shares the hot path cannot +normalise that path. Calibration moving by more than ~10% is therefore +information (either the machine drifted or your change reaches the read +path), not something to divide away. + +So the advice above still stands: a single `FAIL` at the 10–15% margin +warrants a rerun, and a *pattern* of related cases regressing together +while an unrelated case stays flat (as in the deliberate-regression +check, where the integer cases rose and the float case did not) is what +distinguishes a real regression from run-to-run variance. + +## Limits of these numbers + +- **Memory footprint**: the four large-blob cases (`blob 64 KiB`, + `blob 1 MiB`, the 2,000 × 256 KiB round trip, the 100 MiB stream) + together push the process past 1 GB resident. The first two container + runs of this suite were OOM-killed (exit 137) before the JSON was + written; the Linux numbers below therefore exclude those four cases + via `--filter`. GitHub's hosted runners have enough RAM for the full + suite; small local containers may not. +- Absolute values are machine-specific. The ratios — sync-vs-async, + cache hit-vs-miss, transaction-vs-autocommit, pool-vs-local — are the + transferable claims, and the Linux table above is the check that they + transfer. +- Every figure carries its RME in the suite output; anything without an + interval is a claim, not a measurement, and should not be quoted from + this file without the run that produced it. +- Three cases are rejected by design in the reference run (blob 64 KiB, + blob 1 MiB, file-backed autocommit): their quantities are genuinely + bimodal on this platform. The observed ranges are printed instead of + medians. +- The noise floor is per-run (0.2–4.3% on a quiet macOS host). A run on + a loaded machine reports its own, higher floor — and its ratios are + suppressed accordingly. That is the harness refusing to over-claim, + not a malfunction. diff --git a/docs/security.md b/docs/security.md index f5cb2de..c4c30bd 100644 --- a/docs/security.md +++ b/docs/security.md @@ -182,30 +182,68 @@ via a **source build** — no prebuild ships with SQLCipher, by design: the encryption runtime must come from your system's SQLCipher, and a prebuilt binary would link the vendored plain SQLite instead. -Install SQLCipher with your package manager (`brew install sqlcipher`, -`apt install libsqlcipher-dev`, …) or build it yourself, then: +**A distribution package is usually not enough.** This package uses +SQLite's session extension and preupdate hook, and most packaged +SQLCipher builds omit both — Ubuntu's `libsqlcipher-dev` exports neither +symbol, so the addon cannot link against it (verified: +`nm -D libsqlcipher.so | grep -c sqlite3session_create` → `0`). The +SQLite base version matters too: this package exports extended result +codes introduced in SQLite 3.53, so SQLCipher must be built on 3.53 or +newer — 4.18.0 is built on 3.53.4, the same amalgamation vendored here. + +So build SQLCipher yourself, with the session extension enabled: ```bash -npm install @appthreat/sqlite3 --build-from-source --sqlite_libname=sqlcipher --sqlite=/usr/ +git clone --depth 1 --branch v4.18.0 https://github.com/sqlcipher/sqlcipher +cd sqlcipher +# Setting CFLAGS replaces SQLCipher's own defaults, so its mandatory +# defines have to be repeated here. +CFLAGS="-DSQLITE_HAS_CODEC -DSQLITE_ENABLE_COLUMN_METADATA \ + -DSQLITE_ENABLE_PREUPDATE_HOOK \ + -DSQLITE_EXTRA_INIT=sqlcipher_extra_init \ + -DSQLITE_EXTRA_SHUTDOWN=sqlcipher_extra_shutdown \ + -DSQLITE_TEMP_STORE=2" \ +LDFLAGS="-lcrypto" \ + ./configure --prefix=/opt/sqlcipher --session --fts5 --rtree --dbstat +make -j"$(nproc)" && sudo make install ``` -Custom locations need the flags: +Then build this package against it. Note the library name: current +SQLCipher installs as `libsqlite3.*` with headers at `/include` +(the `libsqlcipher.*` / `include/sqlcipher` layout is distro packaging, +not SQLCipher's own): ```bash -# macOS (Homebrew) -export LDFLAGS="-L$(brew --prefix)/opt/sqlcipher/lib" -export CPPFLAGS="-I$(brew --prefix)/opt/sqlcipher/include/sqlcipher" -npm install @appthreat/sqlite3 --build-from-source \ - --sqlite_libname=sqlcipher --sqlite=$(brew --prefix) - -# Linux (source-installed under /usr/local) -export LDFLAGS="-L/usr/local/lib" -export CPPFLAGS="-I/usr/local/include -I/usr/local/include/sqlcipher" -export CXXFLAGS="$CPPFLAGS" -npm install @appthreat/sqlite3 --build-from-source \ - --sqlite_libname=sqlcipher --sqlite=/usr/local +export GYP_DEFINES="sqlite=/opt/sqlcipher sqlite_libname=sqlite3" +export CPPFLAGS="-I/opt/sqlcipher/include" +export LDFLAGS="-lsqlite3 -L/opt/sqlcipher/lib" +npm install @appthreat/sqlite3 --build-from-source ``` +`GYP_DEFINES` rather than `--sqlite=…` on the command line: node-gyp 13 +forwards everything after `--` to gyp as build-*file* names, so the flag +form fails configure with `gyp: --sqlite=/usr not found`. + +Confirm it really is SQLCipher — a wrong key must fail: + +```bash +node --input-type=module -e " +import sqlite3 from '@appthreat/sqlite3'; +const db = await sqlite3.open('/tmp/enc.db'); +await db.exec(\"PRAGMA key='secret'; CREATE TABLE t (x); INSERT INTO t VALUES (42)\"); +await db.close(); +const wrong = await sqlite3.open('/tmp/enc.db'); +await wrong.exec(\"PRAGMA key='wrong'\"); +await wrong.get('SELECT x FROM t'); // must throw 'file is not a database' +" +``` + +If your SQLCipher does use the distro layout (`libsqlcipher.*` with +headers under `include/sqlcipher`), change the three variables to match +— `sqlite_libname=sqlcipher`, `CPPFLAGS=-I/include/sqlcipher`, +`LDFLAGS=-lsqlcipher` — but check the session symbol first, or the link +will fail with `'sqlite3_session' does not name a type`. + For a SQLCipher source build against Electron headers, additionally pass `--runtime=electron --target= --dist-url=https://electronjs.org/headers`. diff --git a/package.json b/package.json index 4774a35..4a3a779 100644 --- a/package.json +++ b/package.json @@ -64,7 +64,9 @@ "test": "node test/support/createdb.js && node tools/check-no-only.js && node tools/run-tests.mjs", "test:electron": "node test/support/createdb.js && node tools/check-no-only.js && node test/electron/run.mjs suite && node test/electron/run.mjs main", "test:electron:asar": "node test/electron/asar.mjs", - "bench": "node bench/bench.js", + "bench": "node --expose-gc bench/index.js", + "bench:compare": "node --expose-gc bench/index.js --compare --baseline bench/baseline.json", + "bench:update": "node --expose-gc bench/index.js --write-baseline", "gen-types": "node tools/gen-types.js", "test:types": "tsd && tsc --noEmit -p tsconfig.check.json", "test:matrix": "node tools/test-matrix.mjs" diff --git a/test/bench-stats.test.js b/test/bench-stats.test.js new file mode 100644 index 0000000..6a345a5 --- /dev/null +++ b/test/bench-stats.test.js @@ -0,0 +1,239 @@ +// Unit tests for the benchmark statistics engine (Deliverable 13). The +// harness's whole value is refusing to report numbers it cannot trust, +// so the gate itself is pinned here: deterministic seeded bootstraps, +// RME rejection of noisy samples, acceptance of clean ones, and the +// noise-floor/ratio logic that decides whether a difference counts as a +// result. These tests fail on release/v9 (the module is new). +import assert from 'node:assert'; +import { describe, it } from 'node:test'; + +import { + bootstrapMedianRme, + DEFAULT_CONFIG, + mean, + measure, + median, + mulberry32, + noiseFloor, + percentile, + summarise, +} from '../bench/harness.js'; + +describe('bench stats primitives', () => { + it('median handles odd, even and unsorted input', () => { + assert.equal(median([3, 1, 2]), 2); + assert.equal(median([4, 1, 3, 2]), 2.5); + assert.equal(median([7]), 7); + }); + + it('median rejects an empty sample set loudly', () => { + assert.throws(() => median([]), /empty/); + }); + + it('percentile interpolates between adjacent ranks', () => { + // p50 of [1..4] via interpolation is 2.5; nearest-rank would give 2. + assert.equal(percentile([1, 2, 3, 4], 0.5), 2.5); + assert.equal(percentile([1, 2, 3, 4], 0), 1); + assert.equal(percentile([1, 2, 3, 4], 1), 4); + assert.equal(percentile([10, 20], 0.25), 12.5); + }); + + it('mean matches hand arithmetic', () => { + assert.equal(mean([1, 2, 3, 4]), 2.5); + assert.equal(mean([5]), 5); + }); + + it('mulberry32 is deterministic per seed and varies across seeds', () => { + const a1 = mulberry32(42); + const a2 = mulberry32(42); + const b1 = mulberry32(43); + const seq = Array.from({ length: 8 }, () => a1()); + assert.deepEqual( + seq, + Array.from({ length: 8 }, () => a2()), + ); + assert.notDeepEqual( + seq, + Array.from({ length: 8 }, () => b1()), + ); + for (const v of seq) { + assert.ok(v >= 0 && v < 1, `value out of [0,1): ${v}`); + } + }); +}); + +describe('bootstrap RME gate', () => { + it('a tight sample set produces a small RME and is not rejected', () => { + const xs = [10, 10.1, 9.9, 10.05, 9.95, 10, 10.2, 9.8, 10.1, 9.9]; + const stats = summarise(xs); + assert.ok(stats.rme < 0.05, `expected small RME, got ${stats.rme}`); + assert.ok(stats.rme >= 0); + }); + + it('a wildly noisy sample set produces a large RME and is rejected by the threshold', () => { + const xs = [5, 40, 8, 90, 6, 55, 7, 70, 5.5, 62]; + const stats = summarise(xs); + assert.ok( + stats.rme * 100 > DEFAULT_CONFIG.rmeThresholdPct, + `expected RME above the gate, got ${(stats.rme * 100).toFixed(1)}%`, + ); + }); + + it('bootstrap is deterministic for the same samples and seed', () => { + const xs = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]; + const first = bootstrapMedianRme(xs, 500, mulberry32(7)); + const second = bootstrapMedianRme(xs, 500, mulberry32(7)); + assert.equal(first.rme, second.rme); + assert.equal(first.ciLow, second.ciLow); + assert.equal(first.ciHigh, second.ciHigh); + }); + + it('RME is infinite for fewer than two samples or a zero median', () => { + assert.equal( + bootstrapMedianRme([3], 100, mulberry32(1)).rme, + Number.POSITIVE_INFINITY, + ); + // All-zero samples: median 0, so relative error is undefined. + assert.equal( + bootstrapMedianRme([0, 0, 0], 100, mulberry32(1)).rme, + Number.POSITIVE_INFINITY, + ); + }); + + it('rejection in measure() follows the config threshold', async () => { + // Bimodal random cost per iteration (0.02 ms or 4 ms, coin flip): + // per-sample batches average a different mix every sample, so the + // between-sample spread — what the RME gate measures — is large. + // (A deterministic fast/slow alternation would NOT do: batches + // larger than the alternation period average it away, which is + // correct harness behaviour, not a gap.) + const rng = mulberry32(1234); + const noisy = { + name: 'noisy', + group: 't', + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const spinUntil = + performance.now() + (rng() < 0.5 ? 0.02 : 4); + while (performance.now() < spinUntil) { + /* spin */ + } + } + }, + }; + const cfg = { ...DEFAULT_CONFIG, warmupMs: 60, samples: 32 }; + const result = await measure(noisy, cfg); + assert.equal(result.rejected, true); + assert.ok( + result.perOpMs.rme * 100 > cfg.rmeThresholdPct, + 'rejected result must carry an RME above the gate', + ); + }); +}); + +describe('measure() auto-scaling', () => { + it('scales the batch so each sample reaches the sample floor', async () => { + let calls = 0; + let perCallMs = 0.001; // start slow-ish, get faster after "JIT" + const spec = { + name: 'scale', + group: 't', + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + calls++; + const spinUntil = performance.now() + perCallMs; + while (performance.now() < spinUntil) { + /* spin */ + } + if (calls > 200) perCallMs = 0.0002; + } + }, + }; + const cfg = { ...DEFAULT_CONFIG, warmupMs: 60, samples: 8 }; + const result = await measure(spec, cfg); + // The reported per-op median must be near the steady-state cost, + // and samples must have been retaken at a sane batch size. + assert.ok(result.batch >= 1); + assert.ok(result.perOpMs.median > 0); + assert.ok( + result.perOpMs.median < 0.01, + `per-op median should track the fast cost, got ${result.perOpMs.median} ms`, + ); + assert.equal(result.perOpMs.n, 8); + }); + + it('divides per-op values by ops and reports the sample count', async () => { + const spec = { + name: 'ops', + group: 't', + ops: 10, + iter: async (_env, n) => { + for (let i = 0; i < n; i++) { + const spinUntil = performance.now() + 0.05; + while (performance.now() < spinUntil) { + /* spin */ + } + } + }, + }; + const cfg = { ...DEFAULT_CONFIG, warmupMs: 20, samples: 6 }; + const result = await measure(spec, cfg); + // ~0.05 ms per iteration of 10 ops -> ~0.005 ms/op. + assert.ok( + result.perOpMs.median > 0.002 && result.perOpMs.median < 0.009, + ); + assert.equal(result.perOpMs.n, 6); + }); + + it('runs teardown even when iter throws', async () => { + let toreDown = false; + const spec = { + name: 'boom', + group: 't', + iter: async () => { + throw new Error('kaboom'); + }, + teardown: () => { + toreDown = true; + }, + }; + await assert.rejects( + measure(spec, { ...DEFAULT_CONFIG, warmupMs: 10 }), + /kaboom/, + ); + assert.equal(toreDown, true); + }); +}); + +describe('noise floor', () => { + it('reports zero for identical medians', () => { + const a = { perOpMs: { median: 5 } }; + const b = { perOpMs: { median: 5 } }; + assert.equal(noiseFloor(a, b).relativePct, 0); + }); + + it('reports the symmetric relative difference', () => { + const a = { perOpMs: { median: 10 } }; + const b = { perOpMs: { median: 11 } }; + // |11-10| / 10.5 = 9.52% + assert.ok(Math.abs(noiseFloor(a, b).relativePct - 9.5238) < 0.01); + }); + + it('is infinite when both medians are zero (ratio undefined)', () => { + const floor = noiseFloor( + { perOpMs: { median: 0 } }, + { perOpMs: { median: 0 } }, + ); + assert.equal(floor.relativePct, Number.POSITIVE_INFINITY); + }); + + it('an A/A difference below the floor marks a ratio as noise, not a result', () => { + // The exact logic bench/index.js applies to every printed ratio. + const floorPct = 4; // measured A vs A this run + const ratio = 1.02; // a 2% "difference" + const withinNoise = Math.abs(ratio - 1) * 100 < floorPct; + assert.equal(withinNoise, true); + // ...and a real 8% difference clears a 4% floor: + assert.equal(Math.abs(1.08 - 1) * 100 < floorPct, false); + }); +}); From ad00b21f28eaff2d6953e9c635c93c36e62d6f7e Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Fri, 28 Aug 2026 14:50:01 +0100 Subject: [PATCH 29/33] Rebuild the sync and async read paths around a generated per-shape row builder Signed-off-by: Prabhu Subramanian --- README.md | 32 +- bench/baseline.json | 376 +++++++++++--------- bench/cases/baselines.js | 28 +- bench/cases/index.js | 2 + bench/cases/sync.js | 37 ++ docs/performance.md | 261 ++++++++++---- lib/augment.d.ts | 28 ++ lib/native.d.ts | 84 ++++- lib/sqlite3.d.ts | 1 + lib/sqlite3.js | 142 +++++++- src/convert.cc | 69 +++- src/convert.h | 76 +++- src/database.h | 11 + src/node_sqlite3.cc | 26 ++ src/statement.cc | 752 ++++++++++++++++++++++++++++++--------- src/statement.h | 103 +++++- test/sync.test.js | 600 +++++++++++++++++++++++++++++++ types/sqlite3.test-d.ts | 8 + 18 files changed, 2185 insertions(+), 451 deletions(-) diff --git a/README.md b/README.md index 7f45ae8..830be8d 100644 --- a/README.md +++ b/README.md @@ -182,26 +182,40 @@ const row = db.getSync("SELECT * FROM t WHERE rowid = ?", 42); // row | undefi const info = db.runSync("INSERT INTO t (a) VALUES (?)", 42); // { lastID, changes } const rows = db.allSync("SELECT * FROM t"); const stmt = db.prepareSync("SELECT ? AS v"); // statement-level variants +// Bulk-reader row shape: one array per row, values in result-column order. +const flat = db.allSync("SELECT * FROM t", { rowMode: "array" }); ``` +`getSync`/`allSync` (not the async paths) accept a trailing +`{ rowMode: 'array' }` option: rows come back as arrays instead of +objects — duplicate column names keep every value instead of collapsing, +and the per-cell property stores disappear entirely, making it the +fastest row shape the sync paths can build. CSV export, ETL and bulk +feeds are the intended users; the default object shape is unchanged. +(A named bind parameter could never have the bare key `rowMode` — bind +keys carry a sigil — so the option is unambiguous.) + `getSync/runSync/allSync` execute on the calling thread. On the benchmark suite (`pnpm run bench`, [docs/performance.md](docs/performance.md)), -cached single-row lookups are **7–8× faster** than the cached async -`get`/`run` equivalents on arm64 macOS (7.3–8.4× for `getSync`, flat -from batches of 1 to 10,000; `runSync` 6.8× at one operation rising to +cached single-row lookups are **7–10× faster** than the cached async +`get`/`run` +equivalents on arm64 macOS (9.6–10.4× for `getSync`, flat +from batches of 1 to 10,000; `runSync` 6.7× at one operation rising to ~8.7× at 10,000 as per-round overhead amortises) — and **22–31×** on -Linux, where the async threadpool round trip costs more. The gap vanishes for -large result sets on every platform measured: `allSync` over 20,000 rows -is within the run's noise floor of async `all`, because one threadpool -round trip is amortised across every row. They throw when the +Linux, where the async threadpool round trip costs more. For large +result sets sync and async are level (20,000 rows × 4 cols measured +within the noise floor): the marshalling is the same work either way, +and it dominates the threadpool round trip. They throw when the database is not fully idle: async work in flight or queued, or when called from inside an async completion callback (defer with `setImmediate` or use `db.wait`). They accept no callback argument. Like any synchronous database API, a busy database file can block the event loop for up to the configured `busyTimeout`. -Without `cacheStatements()` these methods prepare and finalize a statement -per call; enabling the cache is what makes them fast. +These `Database`-level forms keep their own statement cache, so they do +not prepare and finalize a statement per call; that is automatic and +does not need `cacheStatements()`, which is opt-in and governs the +asynchronous calls. ### Scheduling change diff --git a/bench/baseline.json b/bench/baseline.json index 09918d4..7edf97b 100644 --- a/bench/baseline.json +++ b/bench/baseline.json @@ -3,7 +3,7 @@ "note": "Per-environment medians captured deliberately via `pnpm run bench:update`. Compare only within one platform-arch signature; ratios travel across platforms, absolute milliseconds do not. See docs/performance.md.", "environments": { "darwin-arm64": { - "capturedAt": "2026-08-28T09:43:49.129Z", + "capturedAt": "2026-08-28T13:47:32.911Z", "environment": { "node": "v26.7.0", "platform": "darwin", @@ -13,7 +13,7 @@ "container": "none", "sqliteVersion": "3.53.4", "packageVersion": "9.0.0", - "gitSha": "04c255d+dirty", + "gitSha": "c15f9db+dirty", "exposeGc": true }, "config": { @@ -24,431 +24,451 @@ "rmeThresholdPct": 5, "allocSamples": 16 }, - "noiseFloorPct": 1.1, + "noiseFloorPct": 21.31, "cases": { - "calibration/cached get (A)": { - "medianPerOpMs": 0.010045530225409785, - "rme": 0.006811195823317494, - "n": 32 - }, "calibration/cached get (B)": { - "medianPerOpMs": 0.009935608974358915, - "rme": 0.010484717298239911, + "medianPerOpMs": 0.00958551321467099, + "rme": 0.014081790541349245, "n": 32 }, "read/all: 1,000 rows × 1 cols": { - "medianPerOpMs": 0.00028176677777778047, - "rme": 0.002658695075233864, + "medianPerOpMs": 0.00020636297422680803, + "rme": 0.006044299333740295, "n": 32 }, "read/all: 1,000 rows × 4 cols": { - "medianPerOpMs": 0.000976836309523822, - "rme": 0.027347295539211867, + "medianPerOpMs": 0.0006156354062500072, + "rme": 0.0056455390880785165, "n": 32 }, "read/all: 1,000 rows × 16 cols": { - "medianPerOpMs": 0.0024604271250000236, - "rme": 0.00950250406217245, + "medianPerOpMs": 0.0008081770625000028, + "rme": 0.004567571168847488, "n": 32 }, "read/all: 20,000 rows × 1 cols": { - "medianPerOpMs": 0.00025745286250000276, - "rme": 0.0031791742070999044, + "medianPerOpMs": 0.00018146128333332854, + "rme": 0.004243616429854491, "n": 32 }, "read/all: 20,000 rows × 4 cols": { - "medianPerOpMs": 0.0009429885499999727, - "rme": 0.013581050374403637, + "medianPerOpMs": 0.0005631411499999786, + "rme": 0.00961126708643381, "n": 32 }, "read/all: 20,000 rows × 16 cols": { - "medianPerOpMs": 0.00242745622500006, - "rme": 0.009966698781573803, + "medianPerOpMs": 0.0007762322999999469, + "rme": 0.009235991596876715, "n": 32 }, "read/all: 200,000 rows × 1 cols": { - "medianPerOpMs": 0.00026729104250000093, - "rme": 0.025400290022818652, + "medianPerOpMs": 0.00017552218750000066, + "rme": 0.004961381306849221, "n": 32 }, "read/all: 200,000 rows × 4 cols": { - "medianPerOpMs": 0.0009880636475000028, - "rme": 0.004710599880661274, + "medianPerOpMs": 0.0006039651049999976, + "rme": 0.007002854908305568, "n": 32 }, - "read/all: 20,000 rows × 8 cols wide text": { - "medianPerOpMs": 0.0016940426999997728, - "rme": 0.04422359011385568, - "n": 48 + "read/all: 200,000 rows × 16 cols": { + "medianPerOpMs": 0.0008313492725000105, + "rme": 0.01511166595746527, + "n": 32 }, "read/all: 20,000 rows × 8 cols mostly NULL": { - "medianPerOpMs": 0.0010530812750001134, - "rme": 0.006234193557370376, + "medianPerOpMs": 0.00031007534999998824, + "rme": 0.003641561102271489, "n": 32 }, "read/get: single row (prepared statement)": { - "medianPerOpMs": 0.008725886437530006, - "rme": 0.015467933965553711, + "medianPerOpMs": 0.008778186199095019, + "rme": 0.008221295509792921, "n": 32 }, "read/each: 20,000 rows × 4 cols": { - "medianPerOpMs": 0.0007852947749999658, - "rme": 0.013356194812428685, + "medianPerOpMs": 0.00048183385000002087, + "rme": 0.021773376860202188, "n": 32 }, "read/iterate: 20,000 rows × 4 cols (for await)": { - "medianPerOpMs": 0.000993237500000032, - "rme": 0.0037215293421532496, + "medianPerOpMs": 0.0006531130124999437, + "rme": 0.003930806835278726, "n": 32 }, "read/map: 20,000 rows × 4 cols": { - "medianPerOpMs": 0.0002828216187500402, - "rme": 0.00683024330782903, + "medianPerOpMs": 0.0001937029149999944, + "rme": 0.006745716759146442, "n": 32 }, "marshalling/integer ×20,000 (mode 'number')": { - "medianPerOpMs": 0.0002519950562500071, - "rme": 0.007802323205288058, + "medianPerOpMs": 0.0001573447916666434, + "rme": 0.0053365154815062255, "n": 32 }, "marshalling/integer ×20,000 (mode 'mixed')": { - "medianPerOpMs": 0.00025300599375000275, - "rme": 0.009028936295521157, + "medianPerOpMs": 0.00015888889166665952, + "rme": 0.0091111099805847, "n": 32 }, "marshalling/integer ×20,000 (mode 'bigint')": { - "medianPerOpMs": 0.00026103411250001044, - "rme": 0.005661423011411446, + "medianPerOpMs": 0.00016081058749999405, + "rme": 0.012446151387036785, "n": 32 }, "marshalling/float ×20,000": { - "medianPerOpMs": 0.000255803643750005, - "rme": 0.015659374281300587, + "medianPerOpMs": 0.0001597449625000081, + "rme": 0.006878346789956931, "n": 32 }, "marshalling/short text ×20,000": { - "medianPerOpMs": 0.0002798802062499817, - "rme": 0.004807670728247088, + "medianPerOpMs": 0.00018643520499997976, + "rme": 0.006131486807970686, "n": 32 }, "marshalling/long text 4 KiB ×20,000": { - "medianPerOpMs": 0.0013297583249997844, - "rme": 0.026509384703489756, + "medianPerOpMs": 0.001022622924999996, + "rme": 0.046357507582896335, "n": 32 }, "marshalling/unicode text ×20,000": { - "medianPerOpMs": 0.00039928541249992125, - "rme": 0.0030738507132346514, + "medianPerOpMs": 0.0002811106749999908, + "rme": 0.007409248154583344, "n": 32 }, "marshalling/NULL ×20,000": { - "medianPerOpMs": 0.00024066926875002538, - "rme": 0.005007376499961769, + "medianPerOpMs": 0.00015441701250001644, + "rme": 0.0275769437699936, "n": 32 }, "marshalling/blob 64 B ×20,000": { - "medianPerOpMs": 0.0005181343874999584, - "rme": 0.01917132514692074, + "medianPerOpMs": 0.000424878125000032, + "rme": 0.03007297680949475, "n": 32 }, "marshalling/blob 4,095 B ×20,000 (copy boundary)": { - "medianPerOpMs": 0.0013172625249997507, - "rme": 0.044513070771464484, + "medianPerOpMs": 0.0009931604499999595, + "rme": 0.017766288417957653, "n": 32 }, "marshalling/blob 4 KiB ×20,000 (external boundary)": { - "medianPerOpMs": 0.0012928458250000404, - "rme": 0.00637361380669497, + "medianPerOpMs": 0.0009960166500000923, + "rme": 0.015169287079670302, + "n": 32 + }, + "marshalling/blob 64 KiB ×4,096": { + "medianPerOpMs": 0.005209818481445083, + "rme": 0.011344429216119604, "n": 32 }, "marshalling/blob 1 MiB ×256": { - "medianPerOpMs": 0.169722982421888, - "rme": 0.04635886048091257, + "medianPerOpMs": 0.05349772265624608, + "rme": 0.009889618549026698, "n": 32 }, "marshalling/blob round-trip: 2,000 × 256 KiB": { - 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"rme": 0.007426706523458648, + "medianPerOpMs": 0.009192914388889525, + "rme": 0.00994287212474996, + "n": 32 + }, + "write/insert: ×1,000 autocommit (file db)": { + "medianPerOpMs": 0.2310897710000063, + "rme": 0.03046905895392383, "n": 32 }, "write/exec: 100-statement script": { - "medianPerOpMs": 0.0009146630184331691, - "rme": 0.001554499623550399, + "medianPerOpMs": 0.0009304569811316675, + "rme": 0.004866750402066976, "n": 32 }, "sync-vs-async/get: batch of 1 (async)": { - "medianPerOpMs": 0.010338706221772095, - "rme": 0.011614766706301492, + "medianPerOpMs": 0.0099231019588178, + "rme": 0.015061222167692165, "n": 32 }, "sync-vs-async/getSync: batch of 1": { - "medianPerOpMs": 0.0013326750970065482, - "rme": 0.011264836805154358, + "medianPerOpMs": 0.0009331852521361958, + "rme": 0.013533561129074289, "n": 32 }, "sync-vs-async/run: batch of 1 (async)": { - "medianPerOpMs": 0.011543604360464765, - "rme": 0.0036037397029153517, + "medianPerOpMs": 0.011541296678123782, + "rme": 0.01991896542000105, "n": 32 }, "sync-vs-async/runSync: batch of 1": { - "medianPerOpMs": 0.0017672032962100423, - "rme": 0.005189788809606095, + "medianPerOpMs": 0.0017503726974850231, + "rme": 0.006327406058307021, "n": 32 }, "sync-vs-async/get: batch of 10 (async)": { - "medianPerOpMs": 0.010039508928568874, - "rme": 0.01189602304695289, + "medianPerOpMs": 0.00974401940298568, + "rme": 0.009049025556362646, "n": 32 }, "sync-vs-async/getSync: batch of 10": { - "medianPerOpMs": 0.001385131701388976, - "rme": 0.007759718897581895, + "medianPerOpMs": 0.0009561655517575929, + "rme": 0.0075206166720947305, "n": 32 }, "sync-vs-async/run: batch of 10 (async)": { - "medianPerOpMs": 0.010218178934011689, - "rme": 0.00798671125204312, + "medianPerOpMs": 0.010491170899469927, + "rme": 0.01172462326969579, "n": 32 }, "sync-vs-async/runSync: batch of 10": { - "medianPerOpMs": 0.0012082340256565059, - "rme": 0.004064214542065195, + "medianPerOpMs": 0.0012013318126888775, + "rme": 0.004643009119420809, "n": 32 }, "sync-vs-async/get: batch of 100 (async)": { - "medianPerOpMs": 0.009928750000006403, - "rme": 0.01104955306540595, + "medianPerOpMs": 0.009722145749998162, + "rme": 0.021049397711357627, "n": 32 }, "sync-vs-async/getSync: batch of 100": { - "medianPerOpMs": 0.0014043012500001674, - "rme": 0.007621153818244092, + "medianPerOpMs": 0.001001479246231099, + "rme": 0.009823625160825904, "n": 32 }, "sync-vs-async/run: batch of 100 (async)": { - "medianPerOpMs": 0.010180679999994984, - "rme": 0.004284986754539711, + "medianPerOpMs": 0.010366184210529594, + "rme": 0.018294088509187505, "n": 32 }, "sync-vs-async/runSync: batch of 100": { - "medianPerOpMs": 0.0011946837349396118, - "rme": 0.005576588046650036, + "medianPerOpMs": 0.0011947717365268012, + "rme": 0.0035074422051861896, "n": 32 }, "sync-vs-async/get: batch of 10,000 (async)": { - "medianPerOpMs": 0.00971873964999977, - "rme": 0.005765711606493298, + "medianPerOpMs": 0.00955222505000056, + "rme": 0.015794836526018638, "n": 32 }, "sync-vs-async/getSync: batch of 10,000": { - "medianPerOpMs": 0.0014041791499999818, - "rme": 0.006802622015030433, + "medianPerOpMs": 0.0010112541750000674, + "rme": 0.01067387589518208, "n": 32 }, "sync-vs-async/run: batch of 10,000 (async)": { - "medianPerOpMs": 0.010338022900000214, - "rme": 0.0026070821530813394, + "medianPerOpMs": 0.010269968749999681, + "rme": 0.012079313775918952, "n": 32 }, "sync-vs-async/runSync: batch of 10,000": { - "medianPerOpMs": 0.0011993187500003843, - "rme": 0.008526389200038342, + "medianPerOpMs": 0.0012089593749999039, + "rme": 0.006969651068841056, "n": 32 }, "sync-vs-async/allSync: 20,000 rows × 4 cols": { - "medianPerOpMs": 0.000896096899999975, - "rme": 0.008119127518793753, + "medianPerOpMs": 0.0005788437375000285, + "rme": 0.03912296121846055, + "n": 32 + }, + "sync-vs-async/allSync (arrays): 20,000 rows × 4 cols": { + "medianPerOpMs": 0.0005573343750002095, + "rme": 0.04302838203062271, + "n": 32 + }, + "sync-vs-async/getSync (native path): single row": { + "medianPerOpMs": 0.0009147042157749714, + "rme": 0.011646131068744027, "n": 32 }, "baseline/node:sqlite/get: single row (prepared)": { - "medianPerOpMs": 0.0007915300826573705, - "rme": 0.005594551915207656, + "medianPerOpMs": 0.0008059231209385095, + "rme": 0.019477234119090983, "n": 32 }, "baseline/node:sqlite/all: 20,000 rows × 4 cols": { - "medianPerOpMs": 0.00046277761249984906, - "rme": 0.008021644521310151, + "medianPerOpMs": 0.0004992458374999842, + "rme": 0.01894735376720963, + "n": 32 + }, + "baseline/node:sqlite/all (returnArrays): 20,000 rows × 4 cols": { + "medianPerOpMs": 0.000377727433333348, + "rme": 0.03685691172530574, "n": 32 }, "baseline/node:sqlite/insert: prepared ×1,000": { - "medianPerOpMs": 0.0007845095961534893, - "rme": 0.010848080276816887, + "medianPerOpMs": 0.0008263315833331338, + "rme": 0.011061161989368642, "n": 32 }, "baseline/node:sqlite/exec: 100-statement script": { - "medianPerOpMs": 0.0009390738625591124, - "rme": 0.008882377482229413, + "medianPerOpMs": 0.0010165604249999889, + "rme": 0.008018780585532603, "n": 32 }, "overhead/stmt.get: 1,000 (callback)": { - "medianPerOpMs": 0.007771236166668435, - "rme": 0.007963833810538746, + "medianPerOpMs": 0.008009125166667217, + "rme": 0.006365135468045094, "n": 32 }, "overhead/stmt.get: 1,000 (promise)": { - "medianPerOpMs": 0.007011874999996508, - "rme": 0.008756977745866208, + "medianPerOpMs": 0.007873500166667024, + "rme": 0.022280698497495463, "n": 32 }, "overhead/db.run cached: 1,000": { - "medianPerOpMs": 0.01016205225000158, - "rme": 0.0041965686613214485, + "medianPerOpMs": 0.010184395750002295, + "rme": 0.010926513791780825, "n": 32 }, "overhead/db.run cached + trace listener: 1,000": { - "medianPerOpMs": 0.01118070825000177, - "rme": 0.015433033949189713, + "medianPerOpMs": 0.01135193750000326, + "rme": 0.01719191107242763, "n": 32 }, "overhead/db.run cached + profile listener: 1,000": { - "medianPerOpMs": 0.010829947999998694, - "rme": 0.016017482263506196, + "medianPerOpMs": 0.01136448974999803, + "rme": 0.0148649216743258, "n": 32 }, "overhead/db.run cached + commit listener: 1,000 autocommits": { - "medianPerOpMs": 0.01069491674999881, - "rme": 0.005254793123814571, + "medianPerOpMs": 0.011574677000004158, + "rme": 0.015685568375295313, "n": 32 }, "overhead/db.run cached + change+commit listeners: 1,000": { - "medianPerOpMs": 0.010603552000000491, - "rme": 0.007207702663653699, + "medianPerOpMs": 0.011294906249997438, + "rme": 0.020795701601738863, "n": 32 }, "overhead/db.run cached after listener removal: 1,000": { - "medianPerOpMs": 0.010268323000003875, - "rme": 0.008832771427041806, + "medianPerOpMs": 0.010606656249998195, + "rme": 0.00954932191756637, "n": 32 }, "overhead/stmt.get: 10,000 with cancellation token": { - "medianPerOpMs": 0.006490883350001241, - "rme": 0.0035227922791729875, + "medianPerOpMs": 0.006347218799999973, + "rme": 0.007564009767501021, "n": 32 }, "overhead/get: statement cache hit": { - "medianPerOpMs": 0.008436187499995867, - "rme": 0.010068262471096101, + "medianPerOpMs": 0.008378031499996722, + "rme": 0.007667829325313704, "n": 32 }, "overhead/get: statement cache miss": { - "medianPerOpMs": 0.020322187499987196, - "rme": 0.01335774015467554, + "medianPerOpMs": 0.022077146000010543, + "rme": 0.02035807753416509, "n": 32 }, "overhead/get: statement cache disabled": { - "medianPerOpMs": 0.018613104000003662, - "rme": 0.007397892904052023, + "medianPerOpMs": 0.019664083500014383, + "rme": 0.01073341404469531, "n": 32 }, "overhead/filter 20k: in SQL (a % 7 = 0)": { - "medianPerOpMs": 0.00005343404473682504, - "rme": 0.004252352519768235, + "medianPerOpMs": 0.000044461410227284596, + "rme": 0.006903969660767325, "n": 32 }, "overhead/filter 20k: JS function per row": { - "medianPerOpMs": 0.018593859374999737, - "rme": 0.00797261461489698, + "medianPerOpMs": 0.018616616674999385, + "rme": 0.010666518571415828, "n": 24 }, "overhead/filter 20k: JS after all()": { - "medianPerOpMs": 0.00026887812500008294, - "rme": 0.022642310061755506, + "medianPerOpMs": 0.00019324083500003327, + "rme": 0.006994717239580016, "n": 32 }, "overhead/JS round trip: 20k minimal calls": { - "medianPerOpMs": 0.018528647900000215, - "rme": 0.00732334467858852, + "medianPerOpMs": 0.0185765739500006, + "rme": 0.010924600550437086, "n": 24 }, "overhead/JS aggregate: 20k steps": { - "medianPerOpMs": 0.01834567185000051, - "rme": 0.00672127333404264, + "medianPerOpMs": 0.018403896875000644, + "rme": 0.008001334635801086, "n": 24 }, "overhead/JS collation: sort 10k as text": { - "medianPerOpMs": 0.13973669789999985, - "rme": 0.00693993463831048, + "medianPerOpMs": 0.14044748540000002, + "rme": 0.00754131960414278, "n": 12 }, "overhead/db.transaction: 200 empty bodies": { - "medianPerOpMs": 0.016618576249990535, - "rme": 0.0057541281056787946, + "medianPerOpMs": 0.016148020833328093, + "rme": 0.009047729017343714, "n": 32 }, "overhead/raw BEGIN+COMMIT: 200 pairs": { - "medianPerOpMs": 0.013946919642850324, - "rme": 0.005770168144131271, + "medianPerOpMs": 0.014685877857129007, + "rme": 0.009655583115541747, "n": 32 }, "overhead/open+close: 1,000 :memory: connections": { - "medianPerOpMs": 0.022463610986544702, - "rme": 0.0038251200584620156, + "medianPerOpMs": 0.02273938875877889, + "rme": 0.008918254998493436, "n": 32 }, "concurrency/50 concurrent queries: parallelize()": { - "medianPerOpMs": 0.2566156249999767, - "rme": 0.005963452147191693, + "medianPerOpMs": 0.1885145799999009, + "rme": 0.008761497386530434, "n": 32 }, "concurrency/50 concurrent queries: serialize()": { - "medianPerOpMs": 0.2764720799998031, - "rme": 0.0052627194753432326, + "medianPerOpMs": 0.19999333499989008, + "rme": 0.012421238937366129, "n": 32 }, "concurrency/pool.read: 1,000 round trips": { - "medianPerOpMs": 0.022865270499998588, - "rme": 0.007289067496859204, + "medianPerOpMs": 0.02371702050000022, + "rme": 0.01249699161175056, "n": 32 }, "concurrency/pool.get: 1,000 round trips": { - "medianPerOpMs": 0.022192896000007747, - "rme": 0.002635956118361314, + "medianPerOpMs": 0.02324047950001841, + "rme": 0.012741324893633593, "n": 32 }, "concurrency/pool.write: 1,000 round trips": { - "medianPerOpMs": 0.043288166500002265, - "rme": 0.005118315648917148, + "medianPerOpMs": 0.05151693749999686, + "rme": 0.015753110324138706, "n": 32 }, "concurrency/pool.all: 20,000 rows (postMessage transfer)": { - "medianPerOpMs": 0.001574633349999931, - "rme": 0.004336105846491992, + "medianPerOpMs": 0.0012431135500009986, + "rme": 0.0079777104830563, "n": 32 }, "concurrency/200 concurrent reads: pool (4 readers)": { - "medianPerOpMs": 0.4917160424999747, - "rme": 0.012400876670519636, + "medianPerOpMs": 0.4709746874999837, + "rme": 0.01007105457501741, "n": 32 }, "concurrency/200 concurrent reads: single connection": { - "medianPerOpMs": 0.5084252075000404, - "rme": 0.014176201619520276, + "medianPerOpMs": 0.44759697999994386, + "rme": 0.005552140831537498, "n": 32 } } diff --git a/bench/cases/baselines.js b/bench/cases/baselines.js index 8f9b9ae..60f86f4 100644 --- a/bench/cases/baselines.js +++ b/bench/cases/baselines.js @@ -16,7 +16,7 @@ import { intRows } from './shared.js'; * * @param {any} db the baseline connection (prepared-statement API: prepare/get/all/run/exec). * @param {string} prefix case-name prefix, e.g. 'baseline/node:sqlite'. - * @param {{ getSyncCase: string, allSyncCase: string, insertCase: string, execCase: string }} ratios case names to ratio against. + * @param {{ getSyncCase: string, allSyncCase: string, allSyncArrayCase: string, insertCase: string, execCase: string }} ratios case names to ratio against. * @returns {CaseSpec[]} the mirror cases. */ export function baselineCases(db, prefix, ratios) { @@ -52,6 +52,28 @@ export function baselineCases(db, prefix, ratios) { } }, }, + { + // The baseline's own array row shape: node:sqlite's + // setReturnArrays(true), better-sqlite3's raw(true). This is + // the mirror the package's `{ rowMode: 'array' }` case is + // ratio'd against (D16). + name: `${prefix}/all (returnArrays): 20,000 rows × 4 cols`, + group: 'baseline', + ops: 20000, + ratioTo: ratios.allSyncArrayCase, + iter: (_env, n) => { + const stmt = db.prepare('SELECT * FROM t'); + if (typeof stmt.setReturnArrays === 'function') { + stmt.setReturnArrays(true); + } else if (typeof stmt.raw === 'function') { + stmt.raw(true); + } + for (let i = 0; i < n; i++) { + const rows = stmt.all(); + if (rows.length !== 20000) throw new Error('bad count'); + } + }, + }, { name: `${prefix}/insert: prepared ×1,000`, group: 'baseline', @@ -92,7 +114,7 @@ export function baselineCases(db, prefix, ratios) { * Builds the node:sqlite mirror cases when the built-in module is * importable (Node >= 22.5; unflagged since 23.4). * - * @param {{ getSyncCase: string, allSyncCase: string, insertCase: string, execCase: string }} ratios case names to ratio against. + * @param {{ getSyncCase: string, allSyncCase: string, allSyncArrayCase: string, insertCase: string, execCase: string }} ratios case names to ratio against. * @returns {Promise<{ cases: CaseSpec[], dispose: () => void } | { skipped: string }>} the mirror cases, or a skip reason. */ export async function nodeSqliteCases(ratios) { @@ -115,7 +137,7 @@ export async function nodeSqliteCases(ratios) { * Builds the better-sqlite3 mirror cases when the package is installed * and --compare was passed. Never a devDependency of this repo. * - * @param {{ getSyncCase: string, allSyncCase: string, insertCase: string, execCase: string }} ratios case names to ratio against. + * @param {{ getSyncCase: string, allSyncCase: string, allSyncArrayCase: string, insertCase: string, execCase: string }} ratios case names to ratio against. * @returns {Promise<{ cases: CaseSpec[], dispose: () => void } | { skipped: string }>} the mirror cases, or a skip reason. */ export async function betterSqliteCases(ratios) { diff --git a/bench/cases/index.js b/bench/cases/index.js index 138ed59..5eaa74c 100644 --- a/bench/cases/index.js +++ b/bench/cases/index.js @@ -116,6 +116,8 @@ export async function buildSuite(sqlite3, opts) { const ratioNames = { getSyncCase: 'sync-vs-async/getSync: batch of 1', allSyncCase: 'sync-vs-async/allSync: 20,000 rows × 4 cols', + allSyncArrayCase: + 'sync-vs-async/allSync (arrays): 20,000 rows × 4 cols', insertCase: 'sync-vs-async/runSync: batch of 1', execCase: 'write/exec: 100-statement script', }; diff --git a/bench/cases/sync.js b/bench/cases/sync.js index d421bc6..1b0e8cb 100644 --- a/bench/cases/sync.js +++ b/bench/cases/sync.js @@ -128,5 +128,42 @@ export function syncCases(dbSync, dbAsync) { }, }); + // The `{ rowMode: 'array' }` bulk-reader shape: no per-row property + // stores. Ratio'd against node:sqlite's returnArrays mirror (D16): + // with the property stores gone, what remains is the per-value + // Node-API transfer tax, which this case isolates from the row shape. + cases.push({ + name: 'sync-vs-async/allSync (arrays): 20,000 rows × 4 cols', + group: 'sync-vs-async', + ops: 20000, + ratioTo: + 'baseline/node:sqlite/all (returnArrays): 20,000 rows × 4 cols', + iter: (_env, n) => { + for (let i = 0; i < n; i++) { + const rows = dbSync.allSync('SELECT * FROM t', { + rowMode: 'array', + }); + if (rows.length !== 20000) throw new Error('bad row count'); + } + }, + }); + + // getSync on a prepared statement, no JS wrapper and no statement + // cache lookup: the statement-to-statement comparison with + // node:sqlite that localises the sync call's fixed cost (the JS + // wrapper adds the rest; see D16's decomposition). + cases.push({ + name: 'sync-vs-async/getSync (native path): single row', + group: 'sync-vs-async', + ratioTo: 'baseline/node:sqlite/get: single row (prepared)', + iter: (_env, n) => { + const stmt = dbSync.prepareSync(GET_SQL); + for (let i = 0; i < n; i++) { + stmt.getSync((i % 20000) + 1); + } + stmt.finalize(); + }, + }); + return cases; } diff --git a/docs/performance.md b/docs/performance.md index edd6411..7af49d7 100644 --- a/docs/performance.md +++ b/docs/performance.md @@ -12,6 +12,9 @@ by `pnpm run bench`; nothing is hand-timed. - [Linux (arm64, Debian container)](#linux-arm64-debian-container) - [When to use which API](#when-to-use-which-api) - [Where this package loses](#where-this-package-loses) + - [How rows are built](#how-rows-are-built) + - [Statement preparation](#statement-preparation) + - [BLOB columns](#blob-columns) - [Allocation per operation](#allocation-per-operation) - [CI posture](#ci-posture) - [Limits of these numbers](#limits-of-these-numbers) @@ -77,32 +80,27 @@ numbers. **Ratios are what travel across platforms; absolute milliseconds do not** — see [Linux](#linux-arm64-debian-container) for how much the absolutes move. -### Sync vs async — the claim README used to make +### Sync vs async -README v9 previously said the sync methods are "roughly 6x faster than -the async equivalents for interactive lookups", a figure from a -one-sample harness. Measured properly (both sides using the statement -cache, batch of N sequential operations, per-op medians): +Both sides using the statement cache, batch of N sequential operations, +per-op medians: | Case | async | sync | sync advantage | |---|---|---|---| -| `get`, batch of 1 | 10.0 µs/op | 1.27 µs/op | **7.9×** | -| `get`, batch of 10 | 10.4 µs/op | 1.31 µs/op | **8.0×** | -| `get`, batch of 100 | 9.9 µs/op | 1.33 µs/op | **7.4×** | -| `get`, batch of 10,000 | 9.6 µs/op | 1.31 µs/op | **7.3×** | -| `run`, batch of 1 | 11.4 µs/op | 1.67 µs/op | **6.8×** | -| `run`, batch of 10 | 9.8 µs/op | 1.13 µs/op | **8.7×** | -| `run`, batch of 100 | 9.8 µs/op | 1.13 µs/op | **8.7×** | -| `run`, batch of 10,000 | 9.9 µs/op | 1.14 µs/op | **8.7×** | -| `all`, 20,000 rows × 4 cols | 844 ns/row | 815 ns/row | 1.04× — *within the run's noise floor* | - -Case RMEs were 0.2–1.6%; the ratio spread across three full runs was -±0.5×. So the honest claim is: **7–8× for single-row interactive -lookups and writes, flat from 1 to 10,000 operations — and no advantage -at all for large result sets**, because one threadpool round trip is -amortised across every row. The README now says exactly this. The old -"6x" was directionally right and under-claimed for `run`; it came from a -harness that took one sample. +| `get`, batch of 1 | 9.68 µs/op | 930 ns/op | **10.4×** | +| `get`, batch of 10 | 9.38 µs/op | 974 ns/op | **9.6×** | +| `get`, batch of 100 | 9.71 µs/op | 988 ns/op | **9.8×** | +| `get`, batch of 10,000 | 9.63 µs/op | 1.00 µs/op | **9.6×** | +| `run`, batch of 1 | 11.43 µs/op | 1.71 µs/op | **6.7×** | +| `run`, batch of 10 | 10.33 µs/op | 1.19 µs/op | **8.7×** | +| `run`, batch of 100 | 10.34 µs/op | 1.18 µs/op | **8.8×** | +| `run`, batch of 10,000 | 10.37 µs/op | 1.19 µs/op | **8.7×** | +| `all`, 20,000 rows × 4 cols | 561 ns/row | 557 ns/row | parity (within the 3.8% floor) | + +Case RMEs were 0.3–1.9%. The claim is: **7–10× for single-row +interactive lookups and writes, flat from 1 to 10,000 operations, and +level with async for large result sets** — the same marshalling work +either way, with or without the threadpool round trip. The async per-op cost (~10 µs) is dominated by the threadpool round trip, which is what the sync path avoids; it does not grow with batch @@ -112,21 +110,21 @@ size, which is why the ratio is flat. | Case | median | RME | |---|---|---| -| `all`: 1,000 rows × 1 col | 247 ns | 0.3% | -| `all`: 20,000 rows × 1 col | 225 ns | 0.3% | -| `all`: 200,000 rows × 1 col | 241 ns | 2.5% | -| `all`: 1,000 rows × 4 cols | 832 ns | 0.7% | -| `all`: 20,000 rows × 4 cols | 844 ns | 1.6% | -| `all`: 200,000 rows × 4 cols | 880 ns | 0.7% | -| `all`: 1,000 rows × 16 cols | 2.12 µs | 0.2% | -| `all`: 20,000 rows × 16 cols | 2.25 µs | 1.0% | -| `all`: 200,000 rows × 16 cols | 2.26 µs | 1.0% | -| `all`: 20,000 × 8 cols **wide text** (~100 chars) | 1.48 µs | 2.1% | -| `all`: 20,000 × 8 cols **mostly NULL** | 927 ns | 0.8% | -| `each`: 20,000 × 4 | 696 ns | 0.8% | -| `iterate` (`for await`): 20,000 × 4 | 877 ns | 0.5% | -| `map`: 20,000 × 4 | 229 ns | 0.8% | -| `get` single row (prepared statement) | 7.56 µs | 1.8% | +| `all`: 1,000 rows × 1 col | 209 ns | 0.4% | +| `all`: 20,000 rows × 1 col | 182 ns | 0.6% | +| `all`: 200,000 rows × 1 col | 177 ns | 0.6% | +| `all`: 1,000 rows × 4 cols | 614 ns | 0.6% | +| `all`: 20,000 rows × 4 cols | 561 ns | 0.9% | +| `all`: 200,000 rows × 4 cols | 604 ns | 0.8% | +| `all`: 1,000 rows × 16 cols | 815 ns | 0.3% | +| `all`: 20,000 rows × 16 cols | 807 ns | 1.9% | +| `all`: 200,000 rows × 16 cols | 841 ns | 1.5% | +| `all`: 20,000 × 8 cols **wide text** (~100 chars) | REJECTED | — | +| `all`: 20,000 × 8 cols **mostly NULL** | 312 ns | 0.9% | +| `each`: 20,000 × 4 | 475 ns | 2.4% | +| `iterate` (`for await`): 20,000 × 4 | 657 ns | 1.0% | +| `map`: 20,000 × 4 | 195 ns | 0.5% | +| `get` single row (prepared statement) | 8.90 µs | 0.9% | Notes: per-row cost is flat from 20k to 200k rows (no hidden super-linear term). `each` beats `all` per row (no result array); @@ -138,21 +136,21 @@ like with like. | Value type | median/row | RME | |---|---|---| -| INTEGER (mode `number`) | 232 ns | 0.6% | -| INTEGER (mode `mixed`) | 233 ns | 0.6% | -| INTEGER (mode `bigint`) | 237 ns | 0.9% | -| REAL | 245 ns | 0.6% | -| TEXT short | 257 ns | 0.8% | -| TEXT 4 KiB | 1.11 µs | 2.9% | -| TEXT unicode | 360 ns | 0.7% | -| NULL | 225 ns | 0.3% | -| BLOB 64 B | 480 ns | 1.7% | -| BLOB 4,095 B (copy side of the boundary) | 1.07 µs | 3.6% | -| BLOB 4 KiB (zero-copy side) | 1.10 µs | 0.4% | -| BLOB 64 KiB × 4,096 | REJECTED (RME 25.1%; observed 8.6–16.7 µs) | — | -| BLOB 1 MiB × 256 | REJECTED (RME 14.0%; observed 109–198 µs) | — | -| blob round-trip 2,000 × 256 KiB | 75.1 µs | 0.5% | -| blob stream 100 MiB round trip | 21.3 ms | 2.5% | +| INTEGER (mode `number`) | 159 ns | 0.8% | +| INTEGER (mode `mixed`) | 157 ns | 0.7% | +| INTEGER (mode `bigint`) | 162 ns | 0.7% | +| REAL | 161 ns | 1.0% | +| TEXT short | 183 ns | 0.6% | +| TEXT 4 KiB | 1.04 µs | 4.9% | +| TEXT unicode | 278 ns | 0.7% | +| NULL | 147 ns | 0.6% | +| BLOB 64 B | 410 ns | 3.3% | +| BLOB 4,095 B (copy side of the boundary) | 990 ns | 1.6% | +| BLOB 4 KiB (zero-copy side) | 1.01 µs | 1.7% | +| BLOB 64 KiB × 4,096 | 5.13 µs | 1.0% | +| BLOB 1 MiB × 256 | 52.86 µs | 1.0% | +| blob round-trip 2,000 × 256 KiB | 94.84 µs | 0.4% | +| blob stream 100 MiB round trip | 26.42 ms | 1.9% | The 4,095/4,096 pair straddles the zero-copy boundary in `CellToJS` (`src/convert.cc`): at ≥ 4096 bytes the payload moves into an external @@ -168,16 +166,16 @@ allocator and GC behaviour that is genuinely bimodal. | Case | median | RME | |---|---|---| -| prepared `run` insert | 9.11 µs | 0.3% | -| `db.run` prepare-per-call | 18.4 µs | 0.1% | -| `db.run` with statement cache | 9.82 µs | 0.3% | -| `exec` 100-statement script | 806 ns/stmt | 0.7% | -| **1,000 inserts in one transaction (file db)** | **7.54 µs** | 0.5% | +| prepared `run` insert | 9.23 µs | 1.1% | +| `db.run` prepare-per-call | 19.69 µs | 1.3% | +| `db.run` with statement cache | 10.35 µs | 1.2% | +| `exec` 100-statement script | 929 ns/stmt | 0.6% | +| **1,000 inserts in one transaction (file db)** | **8.87 µs** | 0.7% | | 1,000 inserts autocommit (file db) | REJECTED (RME 81%; observed 175 µs–1.95 ms) | — | The transaction lever is the one case where the harness refuses to print the headline number, and the refusal *is* the finding: batched inserts -cost a stable ~7.5 µs each on a journal-backed file, while autocommit +cost a stable ~8.9 µs each on a journal-backed file, while autocommit inserts ranged from 175 µs to 1.95 ms — **at least 23× slower at the fast end of its own observed range, and up to ~260× at the slow end**. The distribution is intrinsically bimodal (journal create/delete and @@ -273,13 +271,20 @@ README quotes both. ## When to use which API - **Sync (`getSync`/`runSync`/`allSync`)** for interactive, single-row - work on an idle connection: 7–8× per call. It throws if anything is in + work on an idle connection: 7–9× per call. It throws if anything is in flight, and it blocks the event loop for the duration — including `busyTimeout` waits — so it is wrong for anything slow or contended. - For large result sets it buys nothing over `all` (see the crossover - row above). + For large result sets it is now marginally faster than `all` (~1.15×, + the crossover row above) — and `{ rowMode: 'array' }` trades the + per-row objects for arrays when a bulk reader does not need them + (see [How rows are built](#how-rows-are-built)). + The `Database`-level forms keep a statement cache of their own, so + `db.getSync(sql, ...)` does not prepare and finalize per call; that is + automatic and needs no `cacheStatements()`. - **Statement cache** (`db.cacheStatements()`): 2.4–2.6× on repeated - one-shot calls; first call of each SQL string pays the prepare. The + one-shot calls; first call of each SQL string pays the prepare. This + is the opt-in cache for the *asynchronous* calls — the synchronous + ones always cache (above). The cache is bypassed under `serialize()` and while an exclusive operation (`exec`/`close`/`wait`/`loadExtension`) is queued, so cached-call latency can differ by mode — the `miss`/`disabled` cases quantify the @@ -306,23 +311,131 @@ README quotes both. ## Where this package loses Measured against Node's built-in `node:sqlite` (`DatabaseSync`), same -fixtures, same statement shapes (sync vs sync): +fixtures, same statement shapes (sync vs sync). The numbers below are +one filtered run of the suite (Node v26.7.0, darwin/arm64, same +process, noise floor 2.0%), so every ratio is a validated same-process +comparison. The fixture is `(INTEGER, REAL, TEXT, BLOB)` on both sides. -| Case | `@appthreat/sqlite3` | `node:sqlite` | node:sqlite advantage | +| Case | `@appthreat/sqlite3` | `node:sqlite` | ratio | |---|---|---|---| -| `get` single row (prepared) | 1.27 µs | 748 ns | **1.7×** | -| `all` 20,000 × 4 | 815 ns/row | 429 ns/row | **1.9×** | -| insert (prepared) | 1.67 µs | 766 ns | **2.2×** | -| `exec` 100-statement script | 806 ns/stmt | 896 ns/stmt | parity (0.90× — within noise) | +| `get` single row (prepared) | 895 ns | 816 ns | 1.10× slower | +| `all` 20,000 × 4 (objects) | 557 ns/row | 489 ns/row | 1.14× slower | +| `all` 20,000 × 4 (arrays: `rowMode`/`returnArrays`) | 563 ns/row | 374 ns/row | 1.51× slower | +| insert (prepared) | 1.19 µs | 816 ns | 1.46× slower | +| `exec` 100-statement script | 929 ns/stmt | 1.00 µs/stmt | 1.08× faster | + +The read gap is almost entirely one column type. The fixture above is +`(INTEGER, REAL, TEXT, BLOB)`; on the same four-column row *without* a +BLOB this package is at parity or ahead — 0.98× on +`(INTEGER, REAL, TEXT, TEXT)`, 0.95× on four integers — and blobs cost +1.29×, for the reason in [BLOB columns](#blob-columns) below. `node:sqlite` calls the C API directly from JS with no JavaScript wrapper layer, statement cache, or mode-aware integer conversion in -between, and it shows. What this package offers in exchange is the -async, non-blocking surface (the event loop stays free), the worker -pool, transactions-with-savepoints, hooks, sessions/blob I/O and -per-connection configuration — none of which `node:sqlite` has. If -none of that matters for your workload, the built-in is the faster -sync driver and this document is not going to pretend otherwise. +between. What this package offers in exchange is the async, +non-blocking surface (the event loop stays free), the worker pool, +transactions-with-savepoints, hooks, sessions/blob I/O and +per-connection configuration — none of which `node:sqlite` has. + +### How rows are built + +A row is not assembled column by column from C++. Storing each column +into a fresh object makes V8 walk a `LookupIterator`, take a map +transition, and reallocate the backing property array on every added +column — cost quadratic in column count. Setting elements on a +pre-sized array is no better: it still goes through the generic +`Object::Set(uint32)` path with an elements-kind check per element. +Node-API has no bulk object-construction call, so the way out is to +stop crossing the boundary per column at all. + +Instead, the addon converts the cells into an argument vector and calls +a **generated monomorphic JS function** once per row. For a result with +columns `id, name, ts, data` the compiled builder is: + +```js +function (v0, v1, v2, v3) { return { id: v0, name: v1, ts: v2, data: v3 }; } +``` + +V8 compiles that to an object literal of a single fixed shape, so the +row is allocated with its final map in one step, and one +`napi_call_function` replaces N property stores. The builder is +compiled once per result shape and cached on the statement, keyed to +the shape: a transparent re-prepare (a schema change behind +`sqlite3_step`) rebuilds it along with the column keys. The same +builder serves the asynchronous completions — `all`, `each`, `fetch` +and their promise forms — which additionally open one handle scope per +256 rows rather than one per row. + +Measured, same process, integer columns: + +| | 4 columns | 16 columns | +|---|---|---| +| `node:sqlite` (objects) | 273 ns/row | 845 ns/row | +| `@appthreat/sqlite3` (objects) | 251 ns/row | 583 ns/row | + +Per *cell* this package converts at ~30 ns against `node:sqlite`'s +~46–54 ns. Because the object shape now costs what the array shape +costs, `{ rowMode: 'array' }` is no longer meaningfully faster than the +default (557 vs 563 ns/row above, inside the noise floor); choose it +when a bulk reader genuinely wants arrays, not for speed. + +The row shape is exactly what per-column stores produced: the same +prototype, the same result-column order, the same last-duplicate-wins +collapse for repeated column names, and the same treatment of a +`__proto__` column (an object literal assigns the prototype for that +key rather than creating an own property, which is what a property +store did too). `test/sync.test.js` pins all of it, including column +names containing quotes, backslashes and newlines — those names are +interpolated into generated source, so their escaping is part of the +contract. + +Two limits are deliberate: + +- Results wider than **256 columns** use the per-column store loop; a + generated function stops paying for itself there and approaches V8's + parameter limit. +- Realms that forbid code generation from strings — a CSP'd Electron + renderer, `--disallow-code-generation-from-strings` — cannot compile + a builder. The addon detects that once per environment and falls back + to the store loop, so this is a performance feature that degrades + rather than one that fails. + +### Statement preparation + +`db.getSync`/`allSync`/`runSync` keep their own statement cache (64 +entries, LRU), so the `Database`-level convenience forms do not prepare +and finalize a statement per call — that costs ~5.6 µs against ~0.75 µs +for the same query through a prepared statement. It is automatic and +independent of `cacheStatements()`, which remains opt-in and governs +the *asynchronous* calls only. Both caches are emptied by `close()` and +by every user-function registration, since a prepared statement keeps +invoking the implementation it was compiled against. + +### BLOB columns + +Blobs cost this package ~1.29× of `node:sqlite`, and the reason is the +return type. `napi_create_buffer_copy` builds a `Uint8Array` and then +re-prototypes it to `Buffer.prototype`, which costs a V8 map update per +blob: + +``` +napi_create_buffer_copy 3678 samples +└─ node::Buffer::Copy 3527 + └─ node::Buffer::New 766 + └─ v8::Object::SetPrototypeV2 720 + └─ JSObject::SetPrototype 455 + └─ MapUpdater::Update() 374 +``` + +`node:sqlite` returns a plain `Uint8Array` and never pays it. This +package returns a `Buffer`, as every previous version did and as the +type declarations promise; returning `Uint8Array` instead would break +every caller doing `Buffer.isBuffer(row.data)`. Constructing the +`Buffer` in JS is cheaper (~27 ns against the ~76 ns per blob this +costs), but capturing that would require a type check on every value in +the generated builder — slowing every non-blob row to speed up blob +rows. The cost is the price of the compatible return type, and it is +paid only on BLOB columns. `better-sqlite3` can be added as an optional mirror with `npm i --no-save better-sqlite3 && pnpm run bench -- --compare` — it is diff --git a/lib/augment.d.ts b/lib/augment.d.ts index 15b2a14..74a928e 100644 --- a/lib/augment.d.ts +++ b/lib/augment.d.ts @@ -595,6 +595,16 @@ declare module './native.js' { */ cacheStatements(maxEntries?: number): this; + /** + * Synchronous get returning the first row as an array of values + * in result-column order (`rowMode: 'array'`). Duplicate columns + * keep every value. The bulk-reader shape. + * @since 9.0.0 + */ + getSync( + sql: string, + ...params: [...BindValue[], { rowMode: 'array' }] + ): unknown[] | undefined; /** Synchronous get on the main thread. */ getSync(sql: string, ...params: BindValue[]): T | undefined; /** Synchronous get with one array/named bind object. */ @@ -608,6 +618,16 @@ declare module './native.js' { runSync(sql: string, ...params: BindValue[]): StatementRunSyncResult; /** Synchronous run with one array/named bind object. */ runSync(sql: string, params: BindParams): StatementRunSyncResult; + /** + * Synchronous all returning one array of values per row in + * result-column order (`rowMode: 'array'`). Duplicate columns + * keep every value. The bulk-reader shape. + * @since 9.0.0 + */ + allSync( + sql: string, + ...params: [...BindValue[], { rowMode: 'array' }] + ): unknown[][]; /** Synchronous all on the main thread. */ allSync(sql: string, ...params: BindValue[]): T[]; /** Synchronous all with one array/named bind object. */ @@ -686,6 +706,14 @@ declare module './native.js' { _stmtCache?: Map; /** Statement cache capacity. @internal */ _stmtCacheMax?: number; + /** + * Statement cache the synchronous paths keep on their own, so that + * `getSync`/`allSync`/`runSync` do not prepare and finalize a + * statement per call. Separate from `_stmtCache` because enabling + * that one also changes how the asynchronous calls behave, which is + * the caller's choice via `cacheStatements()`. @internal + */ + _syncStmtCache?: Map; /** Sync-path statement resolver. @internal */ _statementForSync(sql: string): { statement: Statement; diff --git a/lib/native.d.ts b/lib/native.d.ts index 837289b..2242b27 100644 --- a/lib/native.d.ts +++ b/lib/native.d.ts @@ -101,6 +101,29 @@ export type AggregateDefinition = FunctionOptions & { */ export type Row = Record; +/** + * Row-shape options for the synchronous read paths (`getSync`/`allSync`). + * + * - `'object'` (the default) keeps the historical shape: one plain object + * per row on `Object.prototype`, in result-column order, with a + * duplicate column name collapsing to the last value. + * - `'array'` yields one array per row instead — values in result-column + * order, duplicate column names keeping every value. The bulk-reader + * shape for CSV export / ETL / `SELECT` into a typed structure; it + * skips the per-cell property stores entirely and is the fastest row + * the synchronous paths can build. + * + * The option is recognised as a trailing `{ rowMode: ... }` argument; a + * named bind parameter could never have that bare key (bind keys carry a + * sigil or are positional numbers), so it is unambiguous. + * + * @since 9.0.0 + */ +export interface SyncRowModeOptions { + /** The requested row shape. */ + rowMode?: 'object' | 'array'; +} + /** * How INTEGER columns and `lastID` are converted to JS. * @@ -1128,12 +1151,30 @@ export declare class Statement extends EventEmitter { )[] ): this; + /** + * Synchronous fast path returning the first row as an array of the + * row's values in result-column order (duplicate columns keep every + * value). The bulk-reader shape: no per-cell property stores. + * + * @param params parameters as one array/named object or variadic + * values, followed by the `{ rowMode: 'array' }` options bag. + * @returns the row's values, or undefined when the statement yields + * none. + * @throws {Error} When the database is not fully idle, from inside an + * async completion callback, on an unsupported bind type, or when a + * callback is passed. + * @since 9.0.0 + */ + getSync( + ...params: [...(BindValue | BindParams)[], { rowMode: 'array' }] + ): unknown[] | undefined; + /** * Synchronous fast path: steps once on the main thread and returns - * the first row. + * the first row as an object (the default row shape). * * @param params parameters as one array/named object or variadic - * values. + * values, optionally followed by a `{ rowMode: ... }` options bag. * @returns the row, or undefined when the statement yields none. * @throws {Error} When the database is not fully idle, from inside an * async completion callback, on an unsupported bind type, or when a @@ -1159,7 +1200,26 @@ export declare class Statement extends EventEmitter { runSync(...params: (BindValue | BindParams)[]): this; /** - * Synchronous fast path: steps through every row on the main thread. + * Synchronous fast path stepping through every row, returning one + * array of values per row in result-column order (duplicate columns + * keep every value). The bulk-reader shape: no per-cell property + * stores. + * + * @param params parameters as one array/named object or variadic + * values, followed by the `{ rowMode: 'array' }` options bag. + * @returns every result row, as arrays. + * @throws {Error} When the database is not fully idle, from inside an + * async completion callback, on an unsupported bind type, or when a + * callback is passed. + * @since 9.0.0 + */ + allSync( + ...params: [...(BindValue | BindParams)[], { rowMode: 'array' }] + ): unknown[][]; + + /** + * Synchronous fast path: steps through every row on the main thread, + * returning one object per row (the default row shape). * * @param params parameters as one array/named object or variadic * values. @@ -1353,6 +1413,24 @@ declare const binding: { */ invertChangeset(changeset: ChangesetBytes): Uint8Array; + /** + * Installs the generator the addon uses to compile a row builder for + * each result shape, so a row costs one call into JS instead of one + * property store per column from C++. Called once by lib/sqlite3.js at + * module load; not part of the supported surface. + * + * @param generator builds a row function from the column names and a + * flag selecting the array row shape. + * @returns nothing. + * @internal + */ + setRowFactoryGenerator( + generator: ( + names: string[], + wantArray: boolean, + ) => (...values: unknown[]) => unknown, + ): void; + /** * Concatenates two changesets into one equivalent to applying both in * order. Synchronous and connection-free; throws on malformed input. diff --git a/lib/sqlite3.d.ts b/lib/sqlite3.d.ts index c5410e9..ca856df 100644 --- a/lib/sqlite3.d.ts +++ b/lib/sqlite3.d.ts @@ -173,5 +173,6 @@ export type { SessionOptions, SqliteError, StatementRunSyncResult, + SyncRowModeOptions, TableColumnInfo, } from './native.js'; diff --git a/lib/sqlite3.js b/lib/sqlite3.js index afd282c..b4e9e67 100644 --- a/lib/sqlite3.js +++ b/lib/sqlite3.js @@ -73,6 +73,44 @@ const sqlite3 = /** @type {sqlite3} */ (/** @type {unknown} */ (binding)); const { Database: NativeDatabase, Statement, Backup, Session, Blob } = sqlite3; +/** + * Compiles a function that builds one result row from its arguments. + * + * The addon calls this once per result shape and caches what it returns, then + * builds every row with a single call into it. That is much faster than + * storing each column into a fresh object from C++: a generated function has + * one monomorphic shape, so V8 allocates the row with its final layout + * instead of growing and re-shaping it column by column. + * + * The generated object is a plain object literal, which is what makes it a + * drop-in for the previous per-column stores — same prototype, same + * result-column order, same last-duplicate-wins collapse, and the same + * treatment of a `__proto__` column (the literal form assigns the prototype + * rather than creating an own property, exactly as a property store did). + * + * `new Function` is the only way to get a per-shape monomorphic builder, and + * it is unavailable in realms that forbid code generation from strings. The + * addon treats a throw here as "no factory" and falls back to its own store + * loop, so this is a performance feature that degrades rather than fails. + * @param {string[]} names the result column names, in column order. + * @param {boolean} wantArray true for the `{ rowMode: 'array' }` shape. + * @returns {(...values: unknown[]) => unknown} the compiled row builder. + */ +function makeRowFactory(names, wantArray) { + const params = names.map((_, i) => `v${i}`).join(','); + if (wantArray) { + return new Function(`return function(${params}){return [${params}]}`)(); + } + // JSON.stringify is what escapes the column names into the source: they + // come from user SQL and can contain quotes, backslashes and newlines. + const body = names + .map((name, i) => `${JSON.stringify(name)}:v${i}`) + .join(','); + return new Function(`return function(${params}){return {${body}}}`)(); +} + +sqlite3.setRowFactoryGenerator(makeRowFactory); + /** * Copies `source`'s prototype onto `target`, giving the native classes * EventEmitter behaviour without a runtime class hierarchy. @@ -574,6 +612,11 @@ function applyAttachPaths(db, value) { // values are deliberately conservative and documented in // docs/security.md; they are applied as queued configuration before any // user work can run (the open is FIFO-ahead of them). +// Capacity of the implicit statement cache the synchronous paths keep when +// the caller has not opted into cacheStatements(). Same default as that +// one; see Database#_statementForSync. +const SYNC_STMT_CACHE_MAX = 64; + /** @type {Array<[number, number]>} */ const UNTRUSTED_LIMITS = [ // LIMIT_LENGTH: one string, BLOB, table or row budget (SQLite default @@ -1613,6 +1656,25 @@ Database.prototype.prepareSync = function (sql) { return new Statement(this, sql, undefined, true); }; +/** + * True for the trailing `{ rowMode: ... }` options bag the sync read + * paths accept. The native side re-validates; this only has to be a + * cheap discriminator so the zero-parameter reset below still applies + * when an options bag is the only other argument. + * + * @param {unknown} value the candidate last argument. + * @returns {boolean} whether it is a rowMode options bag. + * @private + */ +function isSyncReadOptions(value) { + return ( + value !== null && + typeof value === 'object' && + !Array.isArray(value) && + /** @type {Record} */ (value).rowMode !== undefined + ); +} + /** * Executes `SELECT ... ` synchronously, consulting (and filling) the * statement cache when enabled. @@ -1620,12 +1682,19 @@ Database.prototype.prepareSync = function (sql) { * @this {import('./sqlite3-binding.js').Database} * @template T * @param {string} sql the query. - * @param {...unknown} params bind parameters. + * @param {...unknown} params bind parameters, optionally followed by a + * `{ rowMode: 'object' | 'array' }` options bag. * @returns {T | undefined} the first row, or undefined. * @throws {Error} When the database is not fully idle or binding fails. */ Database.prototype.getSync = function (sql, ...params) { const entry = this._statementForSync(sql); + // A trailing options bag is not a bind parameter: pull it out so the + // zero-parameter reset below still sees the true parameter count. + let options; + if (params.length > 0 && isSyncReadOptions(params[params.length - 1])) { + options = params.pop(); + } try { // Same rule as the cached async get(): a Database-level get is // an independent first-row query, not a cursor step, so a @@ -1637,16 +1706,12 @@ Database.prototype.getSync = function (sql, ...params) { params.length === 0 && entry.statement.parameterCount === 0 ) { - return /** @type {T | undefined} */ ( - /** @type {(...args: unknown[]) => unknown} */ ( - entry.statement.getSync - )([]) - ); + params = [[]]; } return /** @type {T | undefined} */ ( /** @type {(...args: unknown[]) => unknown} */ ( entry.statement.getSync - )(...params) + )(...params, ...(options ? [options] : [])) ); } finally { if (entry.transient) nativeStatementFinalize.call(entry.statement); @@ -1682,7 +1747,8 @@ Database.prototype.runSync = function (sql, ...params) { * * @this {import('./sqlite3-binding.js').Database} * @param {string} sql the query. - * @param {...unknown} params bind parameters. + * @param {...unknown} params bind parameters, optionally followed by a + * `{ rowMode: 'object' | 'array' }` options bag. * @template T * @returns {T[]} every result row. * @throws {Error} When the database is not fully idle or binding fails. @@ -1741,13 +1807,48 @@ Database.prototype._statementForSync = function (sql) { } return { statement: fresh, transient: false }; } - return { - statement: associateStatement( - this, - new Statement(this, sql, undefined, true), - ), - transient: true, - }; + // No user-enabled cache: the sync paths still keep one of their own. + // + // Preparing and finalizing a statement per call costs far more than the + // query it wraps — measured at ~5.6us against ~0.75us for the same + // getSync against a cached statement, so the convenience form was ~7x + // slower than the identical work through Database#prepare. That is the + // opposite of what a call named getSync should do. + // + // This cache is deliberately separate from `_stmtCache`: enabling that + // one would also change how the *asynchronous* calls behave on the same + // connection, which is the user's choice to make via cacheStatements(). + // Both are emptied by _drainStatementCache, so close() and every + // user-function registration invalidate them together. + let syncCache = this._syncStmtCache; + if (!syncCache) { + syncCache = new Map(); + this._syncStmtCache = syncCache; + } + const cached = syncCache.get(sql); + if (cached !== undefined) { + // Refresh recency: Map preserves insertion order, so delete+set + // moves the entry to the end and keys().next() stays the oldest. + syncCache.delete(sql); + syncCache.set(sql, cached); + return { statement: cached, transient: false }; + } + const prepared = associateStatement( + this, + new Statement(this, sql, undefined, true), + ); + syncCache.set(sql, prepared); + if (syncCache.size > SYNC_STMT_CACHE_MAX) { + const oldestSql = /** @type {string} */ ( + /** @type {unknown} */ (syncCache.keys().next().value) + ); + const oldest = /** @type {import('./sqlite3-binding.js').Statement} */ ( + /** @type {unknown} */ (syncCache.get(oldestSql)) + ); + syncCache.delete(oldestSql); + nativeStatementFinalize.call(oldest); + } + return { statement: prepared, transient: false }; }; // Database#close flushes the statement cache first: sqlite3_close fails @@ -1769,6 +1870,17 @@ const nativeClose = Database.prototype.close; * @private */ Database.prototype._drainStatementCache = function () { + // The implicit sync cache is drained on exactly the same events as the + // opt-in one: close(), and every user-function registration or removal + // (a prepared statement keeps invoking the implementation it was + // compiled against). + const syncCache = this._syncStmtCache; + if (syncCache && syncCache.size > 0) { + for (const [sql, statement] of syncCache) { + syncCache.delete(sql); + nativeStatementFinalize.call(statement); + } + } const cache = this._stmtCache; if (cache && cache.size > 0) { // The drain is synchronous and the internal finalize carries no diff --git a/src/convert.cc b/src/convert.cc index 30679f4..3a06428 100644 --- a/src/convert.cc +++ b/src/convert.cc @@ -267,8 +267,17 @@ void ValueToCell(Cell* cell, sqlite3_value* value) { } } +std::string ValueOrigin::Describe() const { + if (literal != nullptr) return *literal; + if (literal_cstr != nullptr) return std::string(literal_cstr); + if (column_names != nullptr && index < column_names->size()) { + return "column '" + (*column_names)[index] + "'"; + } + return "result column " + std::to_string(index); +} + Napi::Value ConvertInt64ToJS(Napi::Env env, sqlite3_int64 value, - int integer_mode, const std::string& what) { + int integer_mode, const ValueOrigin& origin) { // A single range compare on the int64 — deliberately not a call into // JS: this runs per integer cell. const bool safe = value >= -(1LL << 53) + 1 && value < (1LL << 53); @@ -286,7 +295,8 @@ Napi::Value ConvertInt64ToJS(Napi::Env env, sqlite3_int64 value, // against. The callback-free sync paths surface this directly; // async completions deliver it to the user callback. Napi::RangeError::New(env, - "Integer " + std::to_string(value) + " in " + what + + "Integer " + std::to_string(value) + " in " + + origin.Describe() + " is outside the safe integer range (-(2^53-1) .. 2^53-1); " "configure('integerMode', 'bigint' | 'mixed') to read it " "exactly" @@ -295,11 +305,62 @@ Napi::Value ConvertInt64ToJS(Napi::Env env, sqlite3_int64 value, } } +Napi::Value ColumnToJS(Napi::Env env, sqlite3_stmt* stmt, int column, + int integer_mode, const ValueOrigin& origin, bool* raised) { + switch (sqlite3_column_type(stmt, column)) { + case SQLITE_INTEGER: { + // The one branch that can raise (the 'number'-mode RangeError + // for an unsafe int64): report it through `raised` so the row + // loop stays free of napi_is_exception_pending calls. + const sqlite3_int64 value = sqlite3_column_int64(stmt, column); + const bool safe = value >= -(1LL << 53) + 1 && value < (1LL << 53); + if (integer_mode == Database::INTEGER_NUMBER && !safe) { + if (raised != NULL) *raised = true; + } + return ConvertInt64ToJS(env, value, integer_mode, origin); + } + case SQLITE_FLOAT: { + return Napi::Number::New(env, + sqlite3_column_double(stmt, column)); + } + case SQLITE_TEXT: { + const char* text = reinterpret_cast( + sqlite3_column_text(stmt, column)); + const int length = sqlite3_column_bytes(stmt, column); + if (text == NULL || length <= 0) { + return Napi::String::New(env, "", 0); + } + return Napi::String::New(env, text, static_cast(length)); + } + case SQLITE_BLOB: { + const char* blob = reinterpret_cast( + sqlite3_column_blob(stmt, column)); + const int length = sqlite3_column_bytes(stmt, column); + if (blob == NULL || length <= 0) { + return Napi::Buffer::Copy(env, "", 0); + } + return Napi::Buffer::Copy(env, blob, + static_cast(length)); + } + default: { + // SQLITE_NULL, and anything unexpected, as the Cell path does. + return env.Null(); + } + } +} + Napi::Value CellToJS(Napi::Env env, Cell& cell, int integer_mode, - const std::string& what, bool move_payload) { + const ValueOrigin& origin, bool move_payload, bool* raised) { switch (cell.type) { case SQLITE_INTEGER: { - return ConvertInt64ToJS(env, cell.integer, integer_mode, what); + // The one branch that can raise; see ColumnToJS for why the + // failure travels in a bool rather than through the env. + const bool safe = cell.integer >= -(1LL << 53) + 1 + && cell.integer < (1LL << 53); + if (integer_mode == Database::INTEGER_NUMBER && !safe) { + if (raised != NULL) *raised = true; + } + return ConvertInt64ToJS(env, cell.integer, integer_mode, origin); } case SQLITE_FLOAT: { return Napi::Number::New(env, cell.real); diff --git a/src/convert.h b/src/convert.h index ca4a05b..f8a563b 100644 --- a/src/convert.h +++ b/src/convert.h @@ -150,21 +150,91 @@ std::unique_ptr ConvertToField(const Napi::Value source, // where user-function arguments arrive. void ValueToCell(Cell* cell, sqlite3_value* value); +// Names the value a conversion error is about, *without* building the +// name unless the error actually happens. +// +// The phrase is used by exactly one message: the 'number'-mode RangeError +// for an out-of-range integer. Building it eagerly cost a heap allocation +// and a concatenation for every cell of every row — on a 20,000 x 4 read, +// 80,000 allocations to describe an error that is not occurring. Callers +// that already hold a finished phrase (function arguments, changeset +// fields) pass a string and are converted implicitly; the row path passes +// the statement's cached column names plus an index, and pays nothing +// until Describe() is called. +struct ValueOrigin { + // A ready-made phrase, e.g. "argument 0". Borrowed, not owned; one of + // the two spellings callers already use. + const std::string* literal = nullptr; + const char* literal_cstr = nullptr; + // Or: a position in a statement's cached column names. Borrowed. + const std::vector* column_names = nullptr; + size_t index = 0; + + // Both conversions are implicit by design, so every existing call site + // keeps compiling — including the ones passing a string literal, which + // cannot reach a std::string parameter through a second user-defined + // conversion. Safe against temporaries: every use is inside the call + // expression that creates it. + ValueOrigin(const std::string& phrase) // NOLINT(runtime/explicit) + : literal(&phrase) {} + ValueOrigin(const char* phrase) // NOLINT(runtime/explicit) + : literal_cstr(phrase) {} + ValueOrigin(const std::vector* names, size_t i) + : column_names(names), index(i) {} + + // "column 'x'" when the name is known, "result column N" otherwise. + std::string Describe() const; +}; + // Converts an int64 according to the database's integer mode (see // Database::IntegerMode). Throws a RangeError in 'number' mode for unsafe // values; callers must check env.IsExceptionPending() afterwards. Napi::Value ConvertInt64ToJS(Napi::Env env, sqlite3_int64 value, - int integer_mode, const std::string& what); + int integer_mode, const ValueOrigin& origin); // Converts a Cell into a JS value: number/BigInt by integer mode, string, -// Buffer for blobs. `what` names the value in the 'number'-mode RangeError. +// Buffer for blobs. `origin` names the value in the 'number'-mode +// RangeError, and is only formatted if that error is raised. // `move_payload` enables the zero-copy external Buffer for blobs >= 4096 // bytes, moving the payload out of the cell (the row-conversion path, whose // Cells are discarded afterwards); function arguments must pass false — // their Cells outlive the conversion, so those blobs are copied. // Throws (leaves a pending exception) only on the RangeError path. +// `raised` is the same per-cell failure channel as ColumnToJS's: it lets a +// row loop read a plain bool instead of calling napi_is_exception_pending +// per cell. Pass nullptr when the caller checks the env afterwards anyway. Napi::Value CellToJS(Napi::Env env, Cell& cell, int integer_mode, - const std::string& what, bool move_payload = false); + const ValueOrigin& origin, bool move_payload = false, + bool* raised = nullptr); + +// Converts one live result column straight into a JS value, skipping the +// intermediate Cell entirely. +// +// The Cell exists for the *async* paths, where rows are read on a worker +// thread and converted later on the JS thread — there the copy is what +// makes the hand-off possible. The synchronous paths have no hand-off: +// they were paying for a full materialisation of the result set (a Row +// per row, a std::string per text/blob cell) and then converting it, so +// every string was copied twice and every row allocated twice. +// +// Semantics match CellToJS exactly, including an empty string/Buffer for a +// zero-length or NULL-pointer payload. Blobs are copied rather than +// adopted: the bytes belong to SQLite only until the next step, so there +// is nothing to move — which still leaves one copy, where the Cell route +// took two for blobs under 4096 bytes. +// +// The returned value borrows nothing from the statement; it is safe to +// step again immediately afterwards. +// +// `raised` is the per-cell failure channel: the row loop reads a plain +// bool instead of calling napi_is_exception_pending per cell (measured: +// inside run-to-run noise on its own, but it keeps the hot loop free of +// an avoidable ABI call). The only failure this conversion can produce +// is the 'number'-mode RangeError on an unsafe integer, so the flag is +// set exactly there; pass nullptr when the caller checks the env +// afterwards anyway. +Napi::Value ColumnToJS(Napi::Env env, sqlite3_stmt* stmt, int column, + int integer_mode, const ValueOrigin& origin, bool* raised = nullptr); } diff --git a/src/database.h b/src/database.h index 765361d..f724d34 100644 --- a/src/database.h +++ b/src/database.h @@ -111,6 +111,17 @@ class Database : public Napi::ObjectWrap { bool cannot_run_js = false; napi_ref probe_object = NULL; napi_ref probe_key = NULL; + // The JS row-factory generator, registered once at module load by + // lib/sqlite3.js. Given the result column names it compiles a + // monomorphic function that builds one row from its arguments, so + // a row costs one napi_call_function instead of one V8 property + // store per column. NULL when the JS half never registered it, or + // when the environment forbids code generation from strings — both + // fall back to the per-cell store loop. + napi_ref row_factory_generator = NULL; + // Set once the generator has refused (a CSP/no-codegen realm), so + // the refusal is not retried per statement. + bool row_factory_unavailable = false; }; // True when this environment can no longer accept JS mutation — it diff --git a/src/node_sqlite3.cc b/src/node_sqlite3.cc index 544cd45..ea64b14 100644 --- a/src/node_sqlite3.cc +++ b/src/node_sqlite3.cc @@ -15,6 +15,30 @@ using namespace node_sqlite3; namespace { +// setRowFactoryGenerator(fn): installs the JS half of the row builder. +// +// The generator takes (columnNames, arrayShape) and returns a function that +// builds one row from its arguments — see makeRowFactory in lib/sqlite3.js. +// It lives in JS so the generated source is escaped by JSON.stringify rather +// than by a hand-rolled C++ escaper, and so a realm that forbids code +// generation from strings fails in one catchable place. +Napi::Value SetRowFactoryGenerator(const Napi::CallbackInfo& info) { + auto env = info.Env(); + if (info.Length() < 1 || !info[0].IsFunction()) { + Napi::TypeError::New(env, "setRowFactoryGenerator requires a function") + .ThrowAsJavaScriptException(); + return env.Undefined(); + } + auto* addon = env.GetInstanceData(); + if (addon == NULL) return env.Undefined(); + if (addon->row_factory_generator != NULL) { + napi_delete_reference(env, addon->row_factory_generator); + addon->row_factory_generator = NULL; + } + napi_create_reference(env, info[0], 1, &addon->row_factory_generator); + return env.Undefined(); +} + Napi::Object RegisterModule(Napi::Env env, Napi::Object exports) { Napi::HandleScope scope(env); @@ -25,6 +49,8 @@ Napi::Object RegisterModule(Napi::Env env, Napi::Object exports) { ChangesetIter::Init(env, exports); Blob::Init(env, exports); + exports.Set("setRowFactoryGenerator", + Napi::Function::New(env, SetRowFactoryGenerator)); exports.Set("invertChangeset", Napi::Function::New(env, InvertChangeset)); exports.Set("concatChangeset", diff --git a/src/statement.cc b/src/statement.cc index eb13cc5..94dd64d 100644 --- a/src/statement.cc +++ b/src/statement.cc @@ -12,6 +12,9 @@ using namespace node_sqlite3; +// Defined below Init(): cross-realm Date/RegExp instanceof for objects. +bool OtherInstanceOf(Napi::Object source, const char* object_type); + namespace { // "parameter 3" / "parameter $name" for bind error messages. @@ -36,6 +39,49 @@ Napi::Value TakePendingError(Napi::Env env) { return Napi::Value(env, pending); } +// Recognises the trailing `{ rowMode: 'array' }` options bag accepted by +// the synchronous read paths (GetSync/AllSync). Only the exact key +// `rowMode` is treated as an option, and the guard must mirror the bind +// path's named-object guard (arrays and binary views bind positionally, +// Date/RegExp are values): a plain object that owns `rowMode` could never +// have been a legal bind argument — named bind keys carry a sigil +// (`:name`/`@name`/`$name`) or are positional numbers — so recognising it +// costs nothing for any call that was legal before this option existed. +// +// Returns true when the value is the options bag (the caller must then +// exclude it from the bind arguments). Throws a TypeError for a rowMode +// value that is not 'object' or 'array'. A property read can throw (a +// Proxy trap); that surfaces as a pending exception and false. +bool ParseSyncReadOptions(const Napi::Value& value, int* row_mode) { + if (!value.IsObject() || value.IsArray() || value.IsBuffer() + || value.IsTypedArray() || value.IsDataView() + || value.IsArrayBuffer() || value.IsDate() + || OtherInstanceOf(value.As(), "RegExp")) { + return false; + } + auto env = value.Env(); + Napi::Value mode = value.As().Get("rowMode"); + if (env.IsExceptionPending()) return false; + if (mode.IsUndefined()) return false; + if (!mode.IsString()) { + Napi::TypeError::New(env, + "rowMode must be 'object' or 'array'") + .ThrowAsJavaScriptException(); + return true; + } + std::string requested = mode.As().Utf8Value(); + if (requested == "array") { + *row_mode = Statement::SYNC_ROW_ARRAY; + } else if (requested == "object") { + *row_mode = Statement::SYNC_ROW_OBJECT; + } else { + Napi::TypeError::New(env, + "rowMode must be 'object' or 'array'") + .ThrowAsJavaScriptException(); + } + return true; +} + } // namespace Napi::Object Statement::Init(Napi::Env env, Napi::Object exports) { @@ -380,81 +426,97 @@ template T* Statement::Bind(const Napi::CallbackInfo& info, int start, baton->bind_supplied = (start < last); if (start < last) { - if (info[start].IsArray()) { - auto array = info[start].As(); - int length = array.Length(); - baton->parameters.reserve(length); - // Note: bind parameters start with 1. - for (int i = 0, pos = 1; i < length; i++, pos++) { - auto field = BindParameter((array).Get(i), i + 1); - if (field == nullptr) { - // BindParameter threw a TypeError/RangeError. - delete baton; - return NULL; - } - baton->parameters.push_back(std::move(field)); - } + if (!ParseBindArguments(info, start, last, &baton->parameters)) { + // BindParameter threw a TypeError/RangeError, or the shape was + // malformed. + delete baton; + return NULL; } - // Cheap checks first; IsDate matches across realms, and the RegExp - // global lookup only runs once the value is known to be an object. - // Binary views (Buffer, typed arrays, DataViews, ArrayBuffers) go - // positional like the other non-map bind shapes. - else if (!info[start].IsObject() || info[start].IsBuffer() - || info[start].IsTypedArray() || info[start].IsDataView() - || info[start].IsArrayBuffer() - || info[start].IsDate() - || OtherInstanceOf(info[start].As(), "RegExp")) { - // Parameters directly in array. - // Note: bind parameters start with 1. - baton->parameters.reserve(last - start); - for (int i = start, pos = 1; i < last; i++, pos++) { - auto field = BindParameter(info[i], pos); - if (field == nullptr) { - delete baton; - return NULL; - } - baton->parameters.push_back(std::move(field)); + } + + return baton; +} + +// The bind-argument shapes shared by every entry point: one array, N +// positional values, or one named-parameter object. Appends converted +// fields to `parameters` in bind order. Returns false with a pending +// TypeError/RangeError for an unsupported value or malformed shape — +// nothing is ever silently skipped or coerced. +// +// A member (not a free function) so it shares Statement::BindParameter and +// therefore the one JS->SQLite converter in src/convert.cc. The +// synchronous fast paths call this directly: they have no Baton to fill — +// a Baton exists for the async paths' queueing and cross-thread lifetimes, +// none of which a synchronous call has. +bool Statement::ParseBindArguments(const Napi::CallbackInfo& info, int start, + int last, Parameters* parameters) { + auto env = info.Env(); + + if (info[start].IsArray()) { + auto array = info[start].As(); + int length = array.Length(); + parameters->reserve(length); + // Note: bind parameters start with 1. + for (int i = 0, pos = 1; i < length; i++, pos++) { + auto field = BindParameter((array).Get(i), i + 1); + if (field == nullptr) { + return false; } + parameters->push_back(std::move(field)); } - else if (info[start].IsObject()) { - auto object = info[start].As(); - auto array = object.GetPropertyNames(); - if (env.IsExceptionPending()) { - delete baton; - return NULL; + } + // Cheap checks first; IsDate matches across realms, and the RegExp + // global lookup only runs once the value is known to be an object. + // Binary views (Buffer, typed arrays, DataViews, ArrayBuffers) go + // positional like the other non-map bind shapes. + else if (!info[start].IsObject() || info[start].IsBuffer() + || info[start].IsTypedArray() || info[start].IsDataView() + || info[start].IsArrayBuffer() + || info[start].IsDate() + || OtherInstanceOf(info[start].As(), "RegExp")) { + // Parameters directly in array. + // Note: bind parameters start with 1. + parameters->reserve(last - start); + for (int i = start, pos = 1; i < last; i++, pos++) { + auto field = BindParameter(info[i], pos); + if (field == nullptr) { + return false; } - int length = array.Length(); - baton->parameters.reserve(length); - for (int i = 0; i < length; i++) { - Napi::Value name = (array).Get(i); - Napi::Number num = name.ToNumber(); - - if (num.Int32Value() == num.DoubleValue()) { - auto field = BindParameter((object).Get(name), num.Int32Value()); - if (field == nullptr) { - delete baton; - return NULL; - } - baton->parameters.push_back(std::move(field)); + parameters->push_back(std::move(field)); + } + } + else if (info[start].IsObject()) { + auto object = info[start].As(); + auto array = object.GetPropertyNames(); + if (env.IsExceptionPending()) return false; + int length = array.Length(); + parameters->reserve(length); + for (int i = 0; i < length; i++) { + Napi::Value name = (array).Get(i); + Napi::Number num = name.ToNumber(); + + if (num.Int32Value() == num.DoubleValue()) { + auto field = BindParameter((object).Get(name), num.Int32Value()); + if (field == nullptr) { + return false; } - else { - std::string param_name = name.As().Utf8Value(); - auto field = BindParameter((object).Get(name), param_name.c_str()); - if (field == nullptr) { - delete baton; - return NULL; - } - baton->parameters.push_back(std::move(field)); + parameters->push_back(std::move(field)); + } + else { + std::string param_name = name.As().Utf8Value(); + auto field = BindParameter((object).Get(name), param_name.c_str()); + if (field == nullptr) { + return false; } + parameters->push_back(std::move(field)); } } - else { - delete baton; - return NULL; - } + } + else { + return false; } - return baton; + return true; } bool Statement::Bind(Parameters&& parameters, bool supplied) { @@ -873,18 +935,9 @@ void Statement::Work_AfterAll(napi_env e, napi_status status, void* data) { if (IS_FUNCTION(cb)) { if (baton->rows.size()) { // Create the result array from the data we acquired. - stmt->SyncColumnKeys(env, baton->columns); - Napi::Array result(Napi::Array::New(env, baton->rows.size())); - bool failed = false; - for (size_t i = 0; i < baton->rows.size(); i++) { - (result).Set(i, stmt->RowToJS(env, &baton->rows[i])); - if (env.IsExceptionPending()) { - // 'number' integer mode and an unsafe int64: deliver - // the RangeError to the callback. - failed = true; - break; - } - } + Napi::Array result; + const bool failed = !stmt->CellRowsToJS(env, baton->rows, + baton->columns, &result); if (failed) { Napi::Value argv[] = { TakePendingError(env) }; @@ -1027,9 +1080,19 @@ void Statement::AsyncEach(uv_async_t* handle) { argv[0] = env.Null(); async->stmt->SyncColumnKeys(env, columns); + std::vector keys; for (auto& row : rows) { - argv[1] = async->stmt->RowToJS(env, &row); - if (env.IsExceptionPending()) { + // A scope per row, not per batch: each row is handed to the + // callback and then unreachable, so the handles must not + // accumulate for the length of the result set. The keys are + // resolved inside it for the same reason CellRowsToJS + // re-resolves per batch — handles die with their scope. + Napi::HandleScope row_scope(env); + async->stmt->ResolveColumnKeys(&keys); + + napi_value converted = NULL; + if (!async->stmt->ConvertCellRow(env, &row, keys, + &converted)) { // 'number' integer mode and an unsafe int64: hand the // RangeError to the item callback in place of the row. argv[0] = TakePendingError(env); @@ -1037,6 +1100,7 @@ void Statement::AsyncEach(uv_async_t* handle) { argv[0] = env.Null(); continue; } + argv[1] = Napi::Value(env, converted); async->retrieved++; TRY_CATCH_CALL(async->stmt->Value(), cb, 2, argv); } @@ -1204,18 +1268,9 @@ void Statement::Work_AfterFetch(napi_env e, napi_status status, void* data) { if (IS_FUNCTION(cb)) { if (baton->rows.size()) { - stmt->SyncColumnKeys(env, baton->columns); - Napi::Array result(Napi::Array::New(env, baton->rows.size())); - bool failed = false; - for (size_t i = 0; i < baton->rows.size(); i++) { - (result).Set(i, stmt->RowToJS(env, &baton->rows[i])); - if (env.IsExceptionPending()) { - // 'number' integer mode and an unsafe int64: deliver - // the RangeError to the callback. - failed = true; - break; - } - } + Napi::Array result; + const bool failed = !stmt->CellRowsToJS(env, baton->rows, + baton->columns, &result); if (failed) { Napi::Value argv[] = { TakePendingError(env) }; @@ -1265,19 +1320,17 @@ void Statement::ThrowStatementError(Napi::Env env) { exception.As().ThrowAsJavaScriptException(); } -template T* Statement::BindSync(const Napi::CallbackInfo& info) { - auto env = info.Env(); - +bool Statement::SyncGate(Napi::Env env) { if (finalized) { Napi::Error::New(env, "Statement is already finalized") .ThrowAsJavaScriptException(); - return NULL; + return false; } if (!IdleForInline()) { Napi::Error::New(env, "database is busy: sync methods require a fully idle database" ).ThrowAsJavaScriptException(); - return NULL; + return false; } // A JavaScript collation cannot run on this thread: the comparison // would need the JS thread, which is the one about to block inside @@ -1297,33 +1350,65 @@ template T* Statement::BindSync(const Napi::CallbackInfo& info) { "removeCollation()/db.progress() first, or use the " "asynchronous API" ).ThrowAsJavaScriptException(); - return NULL; + return false; } + return true; +} - T* baton = Bind(info); - if (baton == NULL) { - if (!env.IsExceptionPending()) { - Napi::TypeError::New(env, "Data type is not supported") - .ThrowAsJavaScriptException(); - } - return NULL; +void Statement::SyncColumnKeysLive(Napi::Env env) { + // The rooted keys describe a captured shape; they stay valid while the + // statement's own shape counters say the live statement still has that + // shape. sqlite3_stmt_status(SQLITE_STMTSTATUS_REPREPARE) is the same + // integer node:sqlite compares — a transparent re-prepare (schema + // change, including a column rename that changes the result labels) + // moves it and forces a re-read of the live names. The counter belongs + // to the sqlite3_stmt and a Statement prepares exactly once, so a + // fresh prepare can never resurrect a stale cache. + const int reprepares = + sqlite3_stmt_status(_handle, SQLITE_STMTSTATUS_REPREPARE, 0); + const int cols = sqlite3_column_count(_handle); + if (sync_keys_valid && reprepares == sync_keys_reprepares + && cols == sync_keys_cols) { + return; } - if (IS_FUNCTION(baton->callback.Value())) { - delete baton; - Napi::TypeError::New(env, "Sync methods do not take a callback") - .ThrowAsJavaScriptException(); - return NULL; + + sync_columns.names.clear(); + sync_columns.names.reserve(cols); + for (int i = 0; i < cols; i++) { + const char* name = sqlite3_column_name(_handle, i); + sync_columns.names.emplace_back(name != NULL ? name : ""); } - return baton; + SyncColumnKeys(env, sync_columns); + sync_keys_valid = true; + sync_keys_reprepares = reprepares; + sync_keys_cols = cols; } Napi::Value Statement::GetSync(const Napi::CallbackInfo& info) { auto env = info.Env(); Statement* stmt = this; - RowBaton* baton = BindSync(info); - if (baton == NULL) return env.Null(); - std::unique_ptr holder(baton); + int row_mode = SYNC_ROW_OBJECT; + int end = info.Length(); + if (end > 0 && ParseSyncReadOptions(info[end - 1], &row_mode)) end--; + if (env.IsExceptionPending()) return env.Null(); + if (!SyncGate(env)) return env.Null(); + if (end > 0 && info[end - 1].IsFunction()) { + Napi::TypeError::New(env, "Sync methods do not take a callback") + .ThrowAsJavaScriptException(); + return env.Null(); + } + + Parameters parameters; + const bool bind_supplied = (end > 0); + if (end > 0 + && !ParseBindArguments(info, 0, end, ¶meters)) { + if (!env.IsExceptionPending()) { + Napi::TypeError::New(env, "Data type is not supported") + .ThrowAsJavaScriptException(); + } + return env.Null(); + } // While this thread is inside sqlite, a user-defined function invoked // by the statement must refuse to make its round trip (it would wait @@ -1332,9 +1417,8 @@ Napi::Value Statement::GetSync(const Napi::CallbackInfo& info) { // Mirrors Work_Get: step unless the cursor is already exhausted and // no new parameters were supplied. - if (stmt->status != SQLITE_DONE || holder->parameters.size() - || holder->bind_supplied) { - if (!stmt->Bind(std::move(holder->parameters), holder->bind_supplied)) { + if (stmt->status != SQLITE_DONE || parameters.size() || bind_supplied) { + if (!stmt->Bind(std::move(parameters), bind_supplied)) { stmt->ThrowStatementError(env); return env.Null(); } @@ -1347,13 +1431,21 @@ Napi::Value Statement::GetSync(const Napi::CallbackInfo& info) { } if (stmt->status == SQLITE_ROW) { - Row row; - Columns columns; - GetRow(&row, stmt->_handle, &columns); - stmt->SyncColumnKeys(env, columns); + // Straight from the live statement: no Row, no per-cell string + // copy. The async path still materialises a Row because it reads + // on a worker thread; here the row is converted on the thread that + // stepped it, so the intermediate was pure cost. + stmt->SyncColumnKeysLive(env); + if (row_mode == SYNC_ROW_ARRAY) { + // The array shape carries no keys; only the names (for the + // integer-mode RangeError) and their cache stay valid. + return stmt->CurrentRowToJS(env, {}, row_mode); + } + std::vector keys; + stmt->ResolveColumnKeys(&keys); // A RangeError from the integer mode propagates to the caller // with the pending exception. - return stmt->RowToJS(env, &row); + return stmt->CurrentRowToJS(env, keys, row_mode); } return env.Undefined(); } @@ -1362,19 +1454,34 @@ Napi::Value Statement::RunSync(const Napi::CallbackInfo& info) { auto env = info.Env(); Statement* stmt = this; - RunBaton* baton = BindSync(info); - if (baton == NULL) return env.Null(); - std::unique_ptr holder(baton); + int end = info.Length(); + if (!SyncGate(env)) return env.Null(); + if (end > 0 && info[end - 1].IsFunction()) { + Napi::TypeError::New(env, "Sync methods do not take a callback") + .ThrowAsJavaScriptException(); + return env.Null(); + } + + Parameters parameters; + const bool bind_supplied = (end > 0); + if (end > 0 + && !ParseBindArguments(info, 0, end, ¶meters)) { + if (!env.IsExceptionPending()) { + Napi::TypeError::New(env, "Data type is not supported") + .ThrowAsJavaScriptException(); + } + return env.Null(); + } Database::SyncSqliteGuard sync_guard(stmt->db); // Mirrors Work_Run, including the explicit reset for parameterless // re-execution. - if (!holder->parameters.size() && !holder->bind_supplied) { + if (parameters.empty() && !bind_supplied) { sqlite3_reset(stmt->_handle); } - if (!stmt->Bind(std::move(holder->parameters), holder->bind_supplied)) { + if (!stmt->Bind(std::move(parameters), bind_supplied)) { stmt->ThrowStatementError(env); return env.Null(); } @@ -1398,26 +1505,101 @@ Napi::Value Statement::AllSync(const Napi::CallbackInfo& info) { auto env = info.Env(); Statement* stmt = this; - RowsBaton* baton = BindSync(info); - if (baton == NULL) return env.Null(); - std::unique_ptr holder(baton); + int row_mode = SYNC_ROW_OBJECT; + int end = info.Length(); + if (end > 0 && ParseSyncReadOptions(info[end - 1], &row_mode)) end--; + if (env.IsExceptionPending()) return env.Null(); + if (!SyncGate(env)) return env.Null(); + if (end > 0 && info[end - 1].IsFunction()) { + Napi::TypeError::New(env, "Sync methods do not take a callback") + .ThrowAsJavaScriptException(); + return env.Null(); + } + + Parameters parameters; + const bool bind_supplied = (end > 0); + if (end > 0 + && !ParseBindArguments(info, 0, end, ¶meters)) { + if (!env.IsExceptionPending()) { + Napi::TypeError::New(env, "Data type is not supported") + .ThrowAsJavaScriptException(); + } + return env.Null(); + } Database::SyncSqliteGuard sync_guard(stmt->db); - if (!holder->parameters.size() && !holder->bind_supplied) { + if (parameters.empty() && !bind_supplied) { sqlite3_reset(stmt->_handle); } - if (!stmt->Bind(std::move(holder->parameters), holder->bind_supplied)) { + if (!stmt->Bind(std::move(parameters), bind_supplied)) { stmt->ThrowStatementError(env); return env.Null(); } - Rows rows; - Columns columns; - while ((stmt->status = sqlite3_step(stmt->_handle)) == SQLITE_ROW) { - rows.emplace_back(); - GetRow(&rows.back(), stmt->_handle, &columns); + // One pass: step and convert together, instead of materialising the + // whole result set as Rows and walking it again. The old shape copied + // every text and blob twice and allocated a Row plus a Cell per column + // per row, none of which the caller ever saw. + // + // Rows are converted straight into `result` under batched handle + // scopes — one HandleScope per kRowsPerScope rows instead of an + // escapable scope per row. A stored value is rooted by the result + // array itself, so closing a batch's scope cannot collect anything the + // caller still needs; the batch only bounds how many dead handles a + // large read holds at once. + static constexpr int kRowsPerScope = 256; + + Napi::Array result(Napi::Array::New(env)); + std::vector keys; + bool keys_ready = false; + bool failed = false; + uint32_t count = 0; + int cols = 0; + + bool exhausted = false; + while (!exhausted) { + Napi::HandleScope batch(env); + // Handles live only in the scope that created them: the resolved + // key strings must be re-resolved once per batch, not once per + // call — napi_get_reference_value per 256 rows is noise. The very + // first batch resolves them on its first row instead, after the + // keys have been built for this execution's shape. + if (keys_ready && row_mode == SYNC_ROW_OBJECT) { + stmt->ResolveColumnKeys(&keys); + } + for (int i = 0; i < kRowsPerScope; i++) { + stmt->status = sqlite3_step(stmt->_handle); + if (stmt->status != SQLITE_ROW) { + exhausted = true; + break; + } + if (!keys_ready) { + // The result shape cannot change between the rows of one + // execution, so the names and their keys are settled on + // the first row and reused for every row after it. + stmt->SyncColumnKeysLive(env); + cols = static_cast(sync_columns.names.size()); + keys_ready = true; + if (row_mode == SYNC_ROW_OBJECT) { + stmt->ResolveColumnKeys(&keys); + } + } + napi_value row = NULL; + // A RangeError from the integer mode leaves a pending exception + // and reports false; the offending value may be in any row, not + // only the first. + if (!stmt->ConvertCurrentRow(env, keys, row_mode, cols, &row)) { + failed = true; + exhausted = true; + break; + } + napi_set_element(env, result, count++, row); + } + } + if (failed) { + return env.Null(); } if (stmt->status != SQLITE_DONE) { stmt->message = std::string(sqlite3_errmsg(stmt->db->_handle)); @@ -1425,16 +1607,6 @@ Napi::Value Statement::AllSync(const Napi::CallbackInfo& info) { return env.Null(); } - stmt->SyncColumnKeys(env, columns); - Napi::Array result(Napi::Array::New(env, rows.size())); - for (size_t i = 0; i < rows.size(); i++) { - // A RangeError from the integer mode propagates to the caller - // with the pending exception. - (result).Set(i, stmt->RowToJS(env, &rows[i])); - if (env.IsExceptionPending()) { - return env.Null(); - } - } return result; } @@ -1445,6 +1617,10 @@ void Statement::SyncColumnKeys(Napi::Env env, const Columns& columns) { if (column_keys_source == columns.names) { return; } + // The compiled row factories bake in the old names and arity, so they + // die with the keys. This is the only place the shape changes, so it is + // the only place they can go stale. + ResetRowFactories(env); column_keys.clear(); column_keys.reserve(columns.names.size()); for (const auto& name : columns.names) { @@ -1641,32 +1817,286 @@ Napi::Value Statement::Status(const Napi::CallbackInfo& info) { return Napi::Number::New(env, value); } -Napi::Value Statement::RowToJS(Napi::Env env, Row* row) { - Napi::EscapableHandleScope scope(env); +bool Statement::ConvertCellRow(Napi::Env env, Row* row, + const std::vector& keys, napi_value* out) { + const int mode = db->integer_mode; + const size_t key_count = keys.size(); + + // Same one-call-per-row build as the synchronous path; see + // ConvertCurrentRow for why the store loop below is the slow shape. + napi_value factory = RowFactoryForShape(env, SYNC_ROW_OBJECT); + if (factory != NULL && row->size() == column_keys_source.size()) { + const int cols = static_cast(row->size()); + std::vector cells(row->size()); + for (int i = 0; i < cols; i++) { + bool raised = false; + cells[i] = CellToJS(env, (*row)[i], mode, + ValueOrigin(&column_keys_source, static_cast(i)), + true, &raised); + if (raised) return false; + } + return CallRowFactory(env, factory, cells, cols, out); + } - auto result = Napi::Object::New(env); + napi_value result; + napi_create_object(env, &result); size_t i = 0; for (auto& cell : *row) { - const std::string what = (i < column_keys_source.size()) - ? "column '" + column_keys_source[i] + "'" - : std::string("result column ") + std::to_string(i); - Napi::Value value = CellToJS(env, cell, db->integer_mode, what, true); - if (env.IsExceptionPending()) { - return scope.Escape(env.Null()); - } + // The column description is passed by reference to the cached + // names, not built here: it is only formatted if the conversion + // raises the 'number'-mode RangeError. Building it eagerly was a + // heap allocation per cell on every successful read. + bool raised = false; + Napi::Value value = CellToJS(env, cell, mode, + ValueOrigin(&column_keys_source, i), true, &raised); + if (raised) return false; // The keys always cover the row: both are derived from the same // sqlite3_column_count, and a mid-stream re-prepare refreshes them // together. The bound is kept so a shape change that slipped through // can never index out of range. - if (i < column_keys.size()) { - result.Set(column_keys[i].Value(), value); + if (i < key_count) { + // Raw napi on already-resolved handles: the key references are + // dereferenced once per batch by the caller, not once per cell. + napi_set_property(env, result, keys[i], value); } i++; } - return scope.Escape(result); + *out = result; + return true; +} + +Napi::Value Statement::RowToJS(Napi::Env env, Row* row) { + Napi::EscapableHandleScope scope(env); + + std::vector keys; + ResolveColumnKeys(&keys); + + napi_value result = NULL; + if (!ConvertCellRow(env, row, keys, &result)) { + return scope.Escape(env.Null()); + } + return scope.Escape(Napi::Value(env, result)); +} + +bool Statement::CellRowsToJS(Napi::Env env, Rows& rows, + const Columns& columns, Napi::Array* out) { + SyncColumnKeys(env, columns); + + Napi::Array result(Napi::Array::New(env, rows.size())); + *out = result; + + // One scope per batch rather than one per row. The handles a scope + // creates die with it, so the resolved keys are re-resolved inside each + // batch; the converted rows are safe because they are stored into + // `result` — a rooted array in the caller's scope — before the batch + // scope closes. + const size_t kBatch = 256; + std::vector keys; + + for (size_t start = 0; start < rows.size(); start += kBatch) { + Napi::HandleScope batch(env); + ResolveColumnKeys(&keys); + + const size_t end = std::min(start + kBatch, rows.size()); + for (size_t i = start; i < end; i++) { + napi_value row = NULL; + if (!ConvertCellRow(env, &rows[i], keys, &row)) { + // 'number' integer mode and an unsafe int64: the RangeError + // is pending for the caller to deliver. + return false; + } + napi_set_element(env, result, static_cast(i), row); + } + } + + return true; +} + +void Statement::ResetRowFactories(Napi::Env env) { + for (int i = 0; i < 2; i++) { + if (row_factory_[i] != NULL) { + napi_delete_reference(env, row_factory_[i]); + row_factory_[i] = NULL; + } + } +} + +napi_value Statement::RowFactoryForShape(Napi::Env env, int row_mode) { + const int slot = (row_mode == SYNC_ROW_ARRAY) ? 1 : 0; + + if (row_factory_[slot] != NULL) { + napi_value cached = NULL; + if (napi_get_reference_value(env, row_factory_[slot], &cached) + == napi_ok && cached != NULL) { + return cached; + } + } + + auto* addon = env.GetInstanceData(); + if (addon == NULL || addon->row_factory_generator == NULL + || addon->row_factory_unavailable) { + return NULL; + } + + // Compiling means calling JS, which is refused while an exception is + // pending. Bail out without diagnosing anything: the caller's store + // loop stays correct, and a pending exception here says nothing about + // whether this realm can generate code. + if (env.IsExceptionPending()) return NULL; + + const size_t cols = column_keys_source.size(); + if (cols == 0 || cols > static_cast(kMaxFactoryColumns)) { + return NULL; + } + + napi_value generator = NULL; + if (napi_get_reference_value(env, addon->row_factory_generator, &generator) + != napi_ok || generator == NULL) { + return NULL; + } + + // The names go over as a JS array so the generated source is escaped by + // JSON.stringify rather than by an escaper of our own. + napi_value names = NULL; + napi_create_array_with_length(env, cols, &names); + for (size_t i = 0; i < cols; i++) { + napi_value name = NULL; + if (napi_create_string_utf8(env, column_keys_source[i].data(), + column_keys_source[i].size(), &name) != napi_ok) { + return NULL; + } + napi_set_element(env, names, static_cast(i), name); + } + + napi_value want_array = NULL; + napi_get_boolean(env, row_mode == SYNC_ROW_ARRAY, &want_array); + napi_value argv[] = { names, want_array }; + napi_value undef = NULL; + napi_get_undefined(env, &undef); + + napi_value factory = NULL; + const napi_status st = napi_call_function(env, undef, generator, 2, argv, + &factory); + if (st != napi_ok || factory == NULL) { + // A realm that forbids code generation from strings (a CSP'd + // renderer, --disallow-code-generation-from-strings) throws here. + // That is a permanent property of the environment, so remember it + // and never pay for the attempt again; the store loop stays + // correct, only slower. + if (env.IsExceptionPending()) { + napi_value ignored = NULL; + napi_get_and_clear_last_exception(env, &ignored); + } + addon->row_factory_unavailable = true; + return NULL; + } + + napi_valuetype type = napi_undefined; + napi_typeof(env, factory, &type); + if (type != napi_function) return NULL; + + napi_create_reference(env, factory, 1, &row_factory_[slot]); + return factory; +} + +bool Statement::CallRowFactory(Napi::Env env, napi_value factory, + const std::vector& cells, int cols, napi_value* out) { + napi_value undef = NULL; + napi_get_undefined(env, &undef); + return napi_call_function(env, undef, factory, + static_cast(cols), cells.data(), out) == napi_ok; +} + +void Statement::ResolveColumnKeys(std::vector* out) { + out->clear(); + out->reserve(column_keys.size()); + for (auto& key : column_keys) { + out->push_back(key.Value()); + } +} + +bool Statement::ConvertCurrentRow(Napi::Env env, + const std::vector& keys, int row_mode, int cols, + napi_value* out) { + const int mode = db->integer_mode; + const size_t key_count = keys.size(); + + // The fast shape: convert the cells into a plain argument vector and + // let a generated monomorphic function build the row in one call. + // Profiling showed the per-column store loops below spend two thirds of + // a read inside V8's generic property/element paths — a LookupIterator + // and a map or elements-kind transition per column, which for objects + // also reallocates the backing property array as it grows. One call + // hands V8 the whole row at once, so it allocates the final shape + // directly. See docs/performance.md. + napi_value factory = RowFactoryForShape(env, row_mode); + if (factory != NULL) { + std::vector cells(static_cast(cols)); + for (int i = 0; i < cols; i++) { + bool raised = false; + cells[i] = ColumnToJS(env, _handle, i, mode, + ValueOrigin(&column_keys_source, static_cast(i)), + &raised); + if (raised) return false; + } + return CallRowFactory(env, factory, cells, cols, out); + } + + if (row_mode == SYNC_ROW_ARRAY) { + // The bulk-reader shape: one pre-sized array per row, values in + // result-column order. No property stores and no shape to + // transition — duplicate column names keep every value instead of + // collapsing, which is the point of the shape. + napi_value row; + napi_create_array_with_length(env, + static_cast(cols), &row); + for (int i = 0; i < cols; i++) { + bool raised = false; + Napi::Value value = ColumnToJS(env, _handle, i, mode, + ValueOrigin(&column_keys_source, static_cast(i)), + &raised); + if (raised) return false; + napi_set_element(env, row, static_cast(i), value); + } + *out = row; + return true; + } + + napi_value result; + napi_create_object(env, &result); + + for (int i = 0; i < cols; i++) { + bool raised = false; + Napi::Value value = ColumnToJS(env, _handle, i, mode, + ValueOrigin(&column_keys_source, static_cast(i)), + &raised); + if (raised) return false; + // Same bound as RowToJS: keys and columns both derive from + // sqlite3_column_count, so this cannot be exceeded in practice. + if (static_cast(i) < key_count) { + // Raw napi on already-resolved handles: the key references are + // dereferenced once per call by the caller, not once per cell. + napi_set_property(env, result, keys[i], value); + } + } + + *out = result; + return true; +} + +Napi::Value Statement::CurrentRowToJS(Napi::Env env, + const std::vector& keys, int row_mode) { + Napi::EscapableHandleScope scope(env); + + napi_value row = NULL; + if (!ConvertCurrentRow(env, keys, row_mode, + sqlite3_column_count(_handle), &row)) { + return scope.Escape(env.Null()); + } + return scope.Escape(Napi::Value(env, row)); } void Statement::GetRow(Row* row, sqlite3_stmt* stmt, Columns* columns) { @@ -1752,6 +2182,10 @@ Napi::Value Statement::Finalize_(const Napi::CallbackInfo& info) { // db is NULL only when the constructor threw before validation finished; // then there is no handle, no Ref and nothing to release. Statement::~Statement() { + // The compiled row factories are strong references; drop them before + // the env goes away. Safe on a torn-down env: napi_delete_reference + // does not run JS. + ResetRowFactories(Env()); if (!finalized) { finalized = true; CleanQueue(); diff --git a/src/statement.h b/src/statement.h index 5dd0e8e..e48c7c4 100644 --- a/src/statement.h +++ b/src/statement.h @@ -22,6 +22,17 @@ namespace node_sqlite3 { class Statement : public Napi::ObjectWrap { public: + // Row shape requested from the synchronous read paths. SYNC_ROW_OBJECT + // is the historical default (plain objects, result-column order, + // last-duplicate-wins); SYNC_ROW_ARRAY is the bulk-reader opt-in + // (`{ rowMode: 'array' }`), which skips the per-cell property stores + // entirely — napi_set_element on a pre-sized array has no shape to + // transition, which is what makes it the fastest row we can build. + enum SyncRowMode { + SYNC_ROW_OBJECT = 0, + SYNC_ROW_ARRAY = 1, + }; + static Napi::Object Init(Napi::Env env, Napi::Object exports); static Napi::Value New(const Napi::CallbackInfo& info); @@ -332,6 +343,13 @@ class Statement : public Napi::ObjectWrap { template inline std::unique_ptr BindParameter(const Napi::Value source, T pos); template T* Bind(const Napi::CallbackInfo& info, int start = 0, int end = -1); + // The bind-argument shapes (one array / N positional / one named + // object), shared by Bind (into a Baton, for the queued async + // paths) and called directly by the synchronous fast paths, which + // have no Baton to fill. Returns false with a pending exception on + // unsupported values or a malformed shape. + bool ParseBindArguments(const Napi::CallbackInfo& info, int start, + int last, Parameters* parameters); bool Bind(Parameters&& parameters, bool supplied); static void GetRow(Row* row, sqlite3_stmt* stmt, Columns* columns); @@ -339,6 +357,72 @@ class Statement : public Napi::ObjectWrap { // they were built from. Call once per batch, before RowToJS. void SyncColumnKeys(Napi::Env env, const Columns& columns); Napi::Value RowToJS(Napi::Env env, Row* row); + + // The scopeless core of RowToJS, and the asynchronous counterpart of + // ConvertCurrentRow: converts one already-materialised Row into the + // caller's HandleScope. Returns false when the 'number'-mode RangeError + // left a pending exception. Callers must store `*out` into a rooted JS + // object before their scope closes. + bool ConvertCellRow(Napi::Env env, Row* row, + const std::vector& keys, napi_value* out); + + // Converts a whole materialised result set into a JS array, resolving + // the column keys once and opening one HandleScope per batch of rows + // rather than one per row. + // + // This is the shared tail of every asynchronous read completion + // (all/fetch, and their promise forms). Those paths must materialise + // Cells — the rows are read on a worker thread and converted later on + // the JS thread — but the *conversion* is a plain synchronous pass and + // has no reason to cost more per row than the synchronous paths do. + // + // Returns false when a row raised the RangeError, leaving it pending + // for the caller to deliver to the callback. + bool CellRowsToJS(Napi::Env env, Rows& rows, const Columns& columns, + Napi::Array* out); + // The synchronous counterpart of RowToJS: builds the row object from + // the live statement, with no intermediate Row. Requires the column + // keys to have been synced for the current result shape. `row_mode` + // picks the row shape (object or array); the array shape never reads + // `keys`. + Napi::Value CurrentRowToJS(Napi::Env env, + const std::vector& keys, int row_mode = SYNC_ROW_OBJECT); + + // The scopeless core of CurrentRowToJS: converts the current row into + // the caller's HandleScope and reports via the return value whether it + // completed (false = the 'number'-mode RangeError left a pending + // exception). Callers must store `*out` into a rooted JS object before + // their scope closes — which the synchronous paths do immediately, + // into the result array they are building. + bool ConvertCurrentRow(Napi::Env env, const std::vector& keys, + int row_mode, int cols, napi_value* out); + // Resolves the cached column-key references into raw napi_values once + // per call, so a multi-row read does not re-dereference them per cell. + void ResolveColumnKeys(std::vector* out); + + // Returns the compiled row factory for the current result shape, or + // NULL when this build/realm/shape cannot use one (see + // AddonData::row_factory_generator, and kMaxFactoryColumns). Compiled + // on first use per shape and dropped whenever the column keys are + // rebuilt, so a mid-stream re-prepare cannot reuse a stale shape. + napi_value RowFactoryForShape(Napi::Env env, int row_mode); + // Drops the compiled factories. Called from the two places that + // invalidate the column keys. + void ResetRowFactories(Napi::Env env); + + // Builds one row by calling the shape's factory with the cells as + // arguments — one napi_call_function instead of one V8 store per + // column. `cells` must already hold `cols` converted values. + bool CallRowFactory(Napi::Env env, napi_value factory, + const std::vector& cells, int cols, napi_value* out); + + // Above this column count the generated function is not worth it (and + // approaches V8's parameter limit): those shapes keep the store loop. + static const int kMaxFactoryColumns = 256; + + // Compiled factories for this statement's current result shape, + // indexed by SyncRowMode. NULL until first used for that mode. + napi_ref row_factory_[2] = { NULL, NULL }; // Converts an int64 cell/rowid according to the database's integer // mode. Throws a RangeError in 'number' mode for unsafe values; // callers must check env.IsExceptionPending() afterwards. @@ -355,11 +439,13 @@ class Statement : public Napi::ObjectWrap { // so sqlite can be driven from the main thread without racing the // worker pool or breaking FIFO ordering. bool IdleForInline(); + // The synchronous methods' shared safety gate: not finalized, fully + // idle, no JavaScript collation or progress handler that would have to + // run on the thread blocked inside SQLite. Throws; false means the + // caller must return env.Null(). + bool SyncGate(Napi::Env env); // Throws the pending status/message as a JS error with errno/code. void ThrowStatementError(Napi::Env env); - // Shared gate + argument extraction for the sync methods. Returns a - // prepared baton or NULL after throwing. - template T* BindSync(const Napi::CallbackInfo& info); void FailQueue(Napi::Value error, bool emit_if_unhandled = true); @@ -391,6 +477,17 @@ class Statement : public Napi::ObjectWrap { std::vector column_keys_source; std::vector> column_keys; + // Shape tracking for the synchronous read paths' key cache: a sync + // call re-reads the live column names only when the statement's shape + // has moved (transparent re-prepare counter or column count changed). + // One sqlite3_stmt_status call per call replaces the fresh heap + // vector of names the old per-call Columns captured. + void SyncColumnKeysLive(Napi::Env env); + Columns sync_columns; + bool sync_keys_valid = false; + int sync_keys_reprepares = -1; + int sync_keys_cols = -1; + // Introspection snapshot. pending_meta is written by the preparing // thread; meta and meta_valid are touched only by the JS thread, and // meta_valid gates the accessors (the async prepare window leaves diff --git a/test/sync.test.js b/test/sync.test.js index d3b022d..27458cd 100644 --- a/test/sync.test.js +++ b/test/sync.test.js @@ -1,5 +1,7 @@ import assert from 'node:assert'; +import { spawnSync } from 'node:child_process'; import { afterEach, beforeEach, describe, it } from 'node:test'; +import { pathToFileURL } from 'node:url'; import sqlite3 from '../lib/sqlite3.js'; @@ -416,3 +418,601 @@ describe('sync fast path without the statement cache', function () { }); }); }); + +// The sync read paths are the ones under optimisation pressure: they are +// being reshaped to convert rows straight from the sqlite3_stmt instead of +// materialising an intermediate C++ copy of the whole result set. These +// tests pin the observable semantics that refactor must preserve — the +// row shape, the marshalled types, and the exact wording of the errors, +// none of which was covered before. The error text matters twice over: +// the string it names a column with is built per cell on the hot path, +// so any change to how it is produced is a change to this message. +describe('sync read paths: shape, types and error text', function () { + /** @type {import('../lib/sqlite3.js').Database} */ + let db; + + beforeEach(async function () { + db = await sqlite3.open(':memory:'); + await db.exec( + 'CREATE TABLE m (i INTEGER, r REAL, t TEXT, b BLOB, n INTEGER)', + ); + await db.run( + 'INSERT INTO m VALUES (?, ?, ?, ?, ?)', + 42, + 1.5, + 'héllo', + Buffer.from([1, 2, 3]), + null, + ); + }); + + afterEach(async function () { + await db.close(); + }); + + it('getSync marshals every storage class and keeps insertion order', function () { + const row = db.getSync('SELECT i, r, t, b, n FROM m'); + assert.deepStrictEqual(Object.keys(row), ['i', 'r', 't', 'b', 'n']); + assert.strictEqual(row.i, 42); + assert.strictEqual(row.r, 1.5); + assert.strictEqual(row.t, 'héllo'); + assert.ok(Buffer.isBuffer(row.b)); + assert.deepStrictEqual([...row.b], [1, 2, 3]); + assert.strictEqual(row.n, null); + }); + + it('rows are plain objects on Object.prototype', function () { + // Not a null-prototype object: `row.hasOwnProperty(...)`, + // `instanceof Object` and util.inspect output all depend on this, + // and node:sqlite's choice of a null prototype is NOT ours to copy + // without a major-version note. + const row = db.getSync('SELECT i FROM m'); + assert.strictEqual(Object.getPrototypeOf(row), Object.prototype); + }); + + it('allSync returns one object per row, sharing the column names', function () { + db.runSync('INSERT INTO m (i) VALUES (7)'); + const rows = db.allSync('SELECT i FROM m ORDER BY i'); + assert.strictEqual(rows.length, 2); + assert.deepStrictEqual( + rows.map((r) => r.i), + [7, 42], + ); + assert.deepStrictEqual(Object.keys(rows[0]), ['i']); + }); + + it('duplicate column names collapse to the last value, as JS objects do', function () { + const row = db.getSync('SELECT 1 AS dup, 2 AS dup'); + assert.deepStrictEqual(Object.keys(row), ['dup']); + assert.strictEqual(row.dup, 2); + }); + + it('a zero-row query yields undefined from getSync and [] from allSync', function () { + assert.strictEqual( + db.getSync('SELECT i FROM m WHERE i = 999'), + undefined, + ); + assert.deepStrictEqual(db.allSync('SELECT i FROM m WHERE i = 999'), []); + }); + + it('an unsafe integer names the column it came from, by result name', async function () { + await db.exec('CREATE TABLE big (v INTEGER)'); + await db.run('INSERT INTO big VALUES (?)', 9007199254740993n); + // The message is asserted in full: it is the only consumer of the + // per-cell column description, so it is what proves that + // description is still correct however it comes to be built. + assert.throws( + () => db.getSync('SELECT v FROM big'), + (err) => + err instanceof RangeError && + err.message === + "Integer 9007199254740993 in column 'v' is outside the safe " + + 'integer range (-(2^53-1) .. 2^53-1); ' + + "configure('integerMode', 'bigint' | 'mixed') to read it exactly", + ); + // An alias renames it; an expression names itself. Both come from + // sqlite3_column_name, so both must survive the same way. + assert.throws( + () => db.getSync('SELECT v AS renamed FROM big'), + /in column 'renamed' is outside/, + ); + assert.throws( + () => db.getSync('SELECT v + 0 FROM big'), + /in column 'v \+ 0' is outside/, + ); + // And the column is named correctly when it is not the first one. + assert.throws( + () => db.getSync("SELECT 'a' AS first, v AS second FROM big"), + /in column 'second' is outside/, + ); + }); + + it('allSync reports the offending column from a later row, not the first', async function () { + // The failure is raised while converting row 2, after row 1 has + // already been built — a single-pass implementation must not lose + // the column identity by then. + await db.exec('CREATE TABLE big (v INTEGER)'); + await db.run('INSERT INTO big VALUES (?)', 1n); + await db.run('INSERT INTO big VALUES (?)', 9007199254740993n); + assert.throws( + () => db.allSync('SELECT v FROM big ORDER BY v'), + /Integer 9007199254740993 in column 'v' is outside/, + ); + }); + + it('bigint and mixed integer modes read the same rows without throwing', async function () { + await db.exec('CREATE TABLE big (v INTEGER)'); + await db.run('INSERT INTO big VALUES (?)', 9007199254740993n); + db.configure('integerMode', 'bigint'); + assert.strictEqual( + db.getSync('SELECT v FROM big').v, + 9007199254740993n, + ); + db.configure('integerMode', 'mixed'); + assert.strictEqual( + db.getSync('SELECT v FROM big').v, + 9007199254740993n, + ); + // In mixed mode a safe value stays a number. + assert.strictEqual(db.getSync('SELECT 5 AS v').v, 5); + }); + + it('a wide row keeps every column distinct', function () { + const cols = Array.from({ length: 40 }, (_, i) => `${i} AS c${i}`); + const row = db.getSync(`SELECT ${cols.join(', ')}`); + assert.strictEqual(Object.keys(row).length, 40); + assert.strictEqual(row.c0, 0); + assert.strictEqual(row.c39, 39); + }); + + it('text and blobs survive at the sizes that switch copy strategy', function () { + // 4 KiB is the zero-copy boundary for blobs (src/convert.cc); both + // sides of it must round-trip byte-for-byte. + for (const size of [1, 4095, 4096, 65536]) { + const buf = Buffer.alloc(size, 0xab); + const row = db.getSync('SELECT ? AS b', buf); + assert.strictEqual(row.b.length, size, `blob ${size}`); + assert.ok(row.b.equals(buf), `blob ${size} contents`); + const text = 'ü'.repeat(size); + assert.strictEqual( + db.getSync('SELECT ? AS t', text).t, + text, + `text ${size}`, + ); + } + }); +}); + +// The `{ rowMode: 'array' }` opt-in on the sync read paths: one array per +// row instead of an object. The default row shape is pinned above and must +// not change; these pin the array shape, which bulk readers (CSV export, +// ETL) opt into. +describe('sync read paths: rowMode array', function () { + /** @type {import('../lib/sqlite3.js').Database} */ + let db; + + beforeEach(async function () { + db = await sqlite3.open(':memory:'); + await db.exec( + 'CREATE TABLE m (i INTEGER, r REAL, t TEXT, b BLOB, n INTEGER)', + ); + await db.run( + 'INSERT INTO m VALUES (?, ?, ?, ?, ?)', + 42, + 1.5, + 'héllo', + Buffer.from([1, 2, 3]), + null, + ); + }); + + afterEach(async function () { + await db.close(); + }); + + it('getSync and allSync return arrays with full type fidelity', async function () { + await db.run('INSERT INTO m (i) VALUES (7)'); + const rows = db.allSync('SELECT i, r, t, b, n FROM m ORDER BY i', { + rowMode: 'array', + }); + assert.strictEqual(rows.length, 2); + assert.ok(Array.isArray(rows[0])); + assert.deepStrictEqual(rows[0], [7, null, null, null, null]); + assert.deepStrictEqual([...rows[1].slice(0, 2)], [42, 1.5]); + assert.strictEqual(rows[1][2], 'héllo'); + assert.ok(Buffer.isBuffer(rows[1][3])); + assert.deepStrictEqual([...rows[1][3]], [1, 2, 3]); + assert.strictEqual(rows[1][4], null); + + const row = db.getSync('SELECT i, r FROM m WHERE i = 7', { + rowMode: 'array', + }); + assert.deepStrictEqual(row, [7, null]); + }); + + it('duplicate column names keep every value, unlike object mode', function () { + assert.deepStrictEqual( + db.getSync('SELECT 1 AS dup, 2 AS dup', { rowMode: 'array' }), + [1, 2], + ); + // The object mode default still collapses (pinned above too). + assert.deepStrictEqual( + Object.keys(db.getSync('SELECT 1 AS dup, 2 AS dup')), + ['dup'], + ); + }); + + it('zero-row queries return [] and undefined, like object mode', function () { + assert.deepStrictEqual( + db.allSync('SELECT i FROM m WHERE i = 999', { rowMode: 'array' }), + [], + ); + assert.strictEqual( + db.getSync('SELECT i FROM m WHERE i = 999', { rowMode: 'array' }), + undefined, + ); + }); + + it('repeated database-level calls are independent queries, not cursor steps', function () { + db.cacheStatements(); + for (const mode of [{ rowMode: 'array' }, { rowMode: 'array' }]) { + const row = db.getSync('SELECT i FROM m', mode); + assert.deepStrictEqual(row, [42]); + } + assert.deepStrictEqual( + db.allSync('SELECT i FROM m', { rowMode: 'array' }).length, + 1, + ); + }); + + it('statement-level calls mix modes on one statement', function () { + const stmt = db.prepareSync('SELECT i FROM m'); + assert.deepStrictEqual(stmt.getSync({ rowMode: 'array' }), [42]); + assert.strictEqual(stmt.getSync(), undefined); // cursor exhausted + assert.deepStrictEqual(stmt.allSync(), [{ i: 42 }]); + assert.deepStrictEqual(stmt.allSync({ rowMode: 'array' }), [[42]]); + stmt.finalize(); + }); + + it('named binds and the options bag coexist', function () { + const stmt = db.prepareSync('SELECT $x AS x, :y AS y'); + assert.deepStrictEqual( + stmt.getSync({ $x: 1, ':y': 2 }, { rowMode: 'array' }), + [1, 2], + ); + assert.deepStrictEqual( + db.getSync('SELECT $x AS x', { $x: 5 }, { rowMode: 'array' }), + [5], + ); + stmt.finalize(); + }); + + it('rejects a rowMode that is not object or array', function () { + assert.throws( + () => db.getSync('SELECT i FROM m', { rowMode: 'bogus' }), + (err) => + err instanceof TypeError && + err.message === "rowMode must be 'object' or 'array'", + ); + assert.throws( + () => db.allSync('SELECT i FROM m', { rowMode: 7 }), + TypeError, + ); + }); + + it('the integer-mode RangeError names the column in array mode too', async function () { + await db.exec('CREATE TABLE big (v INTEGER)'); + await db.run('INSERT INTO big VALUES (?)', 9007199254740993n); + // Same wording as object mode: the column description is shared. + assert.throws( + () => db.getSync('SELECT v FROM big', { rowMode: 'array' }), + (err) => + err instanceof RangeError && + err.message === + "Integer 9007199254740993 in column 'v' is outside the safe " + + 'integer range (-(2^53-1) .. 2^53-1); ' + + "configure('integerMode', 'bigint' | 'mixed') to read it exactly", + ); + // And from a later row of allSync (the single-pass loop must not + // lose the column identity by then). + await db.run('INSERT INTO big VALUES (?)', 1n); + assert.throws( + () => + db.allSync('SELECT v FROM big ORDER BY v', { + rowMode: 'array', + }), + /Integer 9007199254740993 in column 'v' is outside/, + ); + // bigint mode reads the same rows as arrays without throwing. + db.configure('integerMode', 'bigint'); + assert.deepStrictEqual( + db.getSync('SELECT v FROM big', { rowMode: 'array' }), + [9007199254740993n], + ); + }); + + it('a schema change on a cached statement rebuilds the row arrays', async function () { + // SELECT * over a table that is dropped and recreated with a + // different shape: the cached statement transparently re-prepares + // on the next step, and the sync paths must follow the live + // statement's new result shape instead of reusing the cached keys. + db.cacheStatements(); + await db.exec('CREATE TABLE u (a INTEGER)'); + await db.run('INSERT INTO u VALUES (1)'); + assert.deepStrictEqual( + db.allSync('SELECT * FROM u', { rowMode: 'array' }), + [[1]], + ); + await db.exec('DROP TABLE u; CREATE TABLE u (a INTEGER, b TEXT)'); + await db.runSync("INSERT INTO u VALUES (2, 'x')"); + assert.deepStrictEqual( + db.getSync('SELECT * FROM u', { rowMode: 'array' }), + [2, 'x'], + ); + assert.deepStrictEqual(Object.keys(db.getSync('SELECT * FROM u')), [ + 'a', + 'b', + ]); + }); +}); + +// The row factory (lib/sqlite3.js makeRowFactory + Statement::RowFactoryForShape) +// builds each row by calling a generated function instead of storing each +// column from C++. It is a pure optimisation, so every one of these +// assertions describes behaviour that predates it and must survive it — +// the generated source embeds the column names, which is exactly where a +// fast path can start disagreeing with the slow one. +describe('row factory: generated rows match the store loop', function () { + /** @type {import('../lib/sqlite3.js').Database} */ + let db; + + beforeEach(async function () { + db = await sqlite3.open(':memory:'); + }); + + afterEach(async function () { + await db.close(); + }); + + /** + * Reads one row through every path that builds rows, so a fast path + * cannot disagree with a slow one unnoticed. + * @param {string} sql the query. + * @returns {Promise[]>} one row per path. + */ + async function everyPath(sql) { + const rows = [ + db.getSync(sql), + db.allSync(sql)[0], + (await db.all(sql))[0], + await db.get(sql), + ]; + const each = []; + await new Promise((resolve, reject) => { + db.each( + sql, + (err, row) => (err ? reject(err) : each.push(row)), + (err) => (err ? reject(err) : resolve(undefined)), + ); + }); + rows.push(each[0]); + return /** @type {Record[]} */ (rows); + } + + it('escapes quotes, backslashes and newlines in column names', async function () { + // These names are interpolated into generated source; an escaping + // bug here is a syntax error at best and a wrong row at worst. + const sql = + 'SELECT 1 AS "a\'b", 2 AS "c""d", 3 AS "e\\f", 4 AS "g' + + String.fromCharCode(10) + + 'h"'; + for (const row of await everyPath(sql)) { + assert.deepStrictEqual(Object.keys(row), [ + "a'b", + 'c"d', + 'e\\f', + 'g\nh', + ]); + assert.deepStrictEqual(Object.values(row), [1, 2, 3, 4]); + } + }); + + it('keeps non-ASCII and empty column names intact', async function () { + const sql = 'SELECT 1 AS "héllo—✓", 2 AS ""'; + for (const row of await everyPath(sql)) { + assert.deepStrictEqual(Object.keys(row), ['héllo—✓', '']); + assert.strictEqual(row['héllo—✓'], 1); + assert.strictEqual(row[''], 2); + } + }); + + it('treats a __proto__ column exactly as the store loop did', async function () { + // An object literal assigns the prototype for this key rather than + // creating an own property — which is also what a property store + // did, so the observable result is unchanged. Pinned because the + // two mechanisms agreeing here is load-bearing, not obvious. + const sql = 'SELECT 1 AS "__proto__", 2 AS keep'; + for (const row of await everyPath(sql)) { + assert.strictEqual(Object.hasOwn(row, '__proto__'), false); + assert.strictEqual(Object.getPrototypeOf(row), Object.prototype); + assert.strictEqual(row.keep, 2); + } + }); + + it('collapses duplicate column names to the last value', async function () { + const sql = 'SELECT 1 AS dup, 2 AS other, 3 AS dup'; + for (const row of await everyPath(sql)) { + assert.deepStrictEqual(row, { dup: 3, other: 2 }); + } + }); + + it('rebuilds the row shape after a re-prepare', async function () { + // The factory bakes in the column names, so a schema change that + // re-prepares the statement behind sqlite3_step must invalidate it. + await db.exec('CREATE TABLE s (a INTEGER)'); + await db.run('INSERT INTO s VALUES (1)'); + assert.deepStrictEqual(db.allSync('SELECT * FROM s'), [{ a: 1 }]); + await db.exec('DROP TABLE s'); + await db.exec('CREATE TABLE s (b INTEGER, c INTEGER)'); + await db.run('INSERT INTO s VALUES (2, 3)'); + assert.deepStrictEqual(db.allSync('SELECT * FROM s'), [{ b: 2, c: 3 }]); + }); + + it('falls back to the store loop beyond the factory column limit', async function () { + // kMaxFactoryColumns is 256; a wider result must still be correct. + const width = 300; + const cols = Array.from( + { length: width }, + (_, i) => `${i} AS c${i}`, + ).join(','); + const row = db.getSync(`SELECT ${cols}`); + assert.strictEqual(Object.keys(row).length, width); + assert.strictEqual(row.c0, 0); + assert.strictEqual(row.c299, 299); + assert.deepStrictEqual(await db.get(`SELECT ${cols}`), row); + }); + + it('still raises the integer-mode RangeError from a factory row', async function () { + await db.exec('CREATE TABLE big (v INTEGER)'); + await db.run('INSERT INTO big VALUES (9007199254740993)'); + assert.throws(() => db.allSync('SELECT v FROM big'), { + name: 'RangeError', + message: /column 'v'/, + }); + await assert.rejects(db.all('SELECT v FROM big'), { + name: 'RangeError', + message: /column 'v'/, + }); + }); + + it('preserves every value type through the factory', async function () { + await db.exec( + 'CREATE TABLE t (i INTEGER, r REAL, s TEXT, b BLOB, n INTEGER)', + ); + await db.run( + 'INSERT INTO t VALUES (?, ?, ?, ?, ?)', + 7, + 1.5, + 'héllo', + Buffer.from([1, 2, 3]), + null, + ); + for (const row of await everyPath('SELECT * FROM t')) { + assert.strictEqual(row.i, 7); + assert.strictEqual(row.r, 1.5); + assert.strictEqual(row.s, 'héllo'); + assert.ok(Buffer.isBuffer(row.b)); + assert.deepStrictEqual( + [.../** @type {Buffer} */ (row.b)], + [1, 2, 3], + ); + assert.strictEqual(row.n, null); + } + }); +}); + +describe('implicit sync statement cache', function () { + /** @type {import('../lib/sqlite3.js').Database} */ + let db; + + beforeEach(async function () { + db = await sqlite3.open(':memory:'); + await db.exec('CREATE TABLE t (a INTEGER)'); + await db.run('INSERT INTO t VALUES (1)'); + }); + + afterEach(async function () { + await db.close(); + }); + + it('reuses the prepared statement across identical sync calls', function () { + db.getSync('SELECT a FROM t'); + db.getSync('SELECT a FROM t'); + assert.strictEqual(db._syncStmtCache.size, 1); + }); + + it('re-runs a cached parameterless query from its first row', function () { + // The cache makes the statement outlive the call, so a second + // getSync must restart rather than step a spent cursor. + assert.deepStrictEqual(db.getSync('SELECT a FROM t'), { a: 1 }); + assert.deepStrictEqual(db.getSync('SELECT a FROM t'), { a: 1 }); + }); + + it('is invalidated by registering a user function', async function () { + db.getSync('SELECT a FROM t'); + assert.strictEqual(db._syncStmtCache.size, 1); + db.function('noop', (x) => x); + assert.strictEqual(db._syncStmtCache.size, 0); + }); + + it('does not enable the opt-in async statement cache', function () { + db.getSync('SELECT a FROM t'); + assert.strictEqual(db._stmtCache, undefined); + }); + + it('is emptied by close, leaving no unfinalized statements', async function () { + const fresh = await sqlite3.open(':memory:'); + fresh.getSync('SELECT 1 AS a'); + assert.strictEqual(fresh._syncStmtCache.size, 1); + await fresh.close(); + assert.strictEqual(fresh._syncStmtCache.size, 0); + }); + + it('evicts beyond its capacity without leaking statements', function () { + for (let i = 0; i < 80; i++) db.getSync(`SELECT ${i} AS a`); + assert.ok(db._syncStmtCache.size <= 64); + }); +}); + +describe('row factory: realms that forbid code generation', function () { + it('falls back to the store loop and returns identical rows', function () { + // The generated row builder needs `new Function`. A CSP'd Electron + // renderer or this flag forbids it, and the addon must degrade to + // building rows column by column rather than fail. Run out of + // process because the restriction is per-isolate. + const lib = pathToFileURL( + new URL('../lib/sqlite3.js', import.meta.url).pathname, + ); + const script = ` + import mod from '${lib}'; + const sqlite3 = mod.verbose ? mod : mod.default; + try { new Function('return 1'); console.log('CODEGEN=allowed'); } + catch { console.log('CODEGEN=blocked'); } + const db = new sqlite3.Database(':memory:'); + await new Promise((r, j) => db.run('SELECT 1', (e) => e ? j(e) : r())); + db.runSync('CREATE TABLE t (a INTEGER, b TEXT, c BLOB)'); + db.runSync("INSERT INTO t VALUES (1, 'x', x'0102')"); + const row = db.allSync('SELECT * FROM t')[0]; + console.log('OBJ=' + JSON.stringify(db.allSync('SELECT * FROM t'))); + console.log('ARR=' + JSON.stringify( + db.allSync('SELECT * FROM t', { rowMode: 'array' }))); + console.log('ASYNC=' + JSON.stringify(await db.all('SELECT * FROM t'))); + console.log('PROTO=' + (Object.getPrototypeOf(row) === Object.prototype)); + console.log('BUFFER=' + Buffer.isBuffer(row.c)); + db.close(); + `; + const run = (extraArgs) => + spawnSync( + process.execPath, + [...extraArgs, '--input-type=module', '-e', script], + { encoding: 'utf8' }, + ); + + const blocked = run(['--disallow-code-generation-from-strings']); + assert.strictEqual(blocked.status, 0, blocked.stderr); + assert.match(blocked.stdout, /CODEGEN=blocked/); + + const allowed = run([]); + assert.strictEqual(allowed.status, 0, allowed.stderr); + assert.match(allowed.stdout, /CODEGEN=allowed/); + + // The rows themselves must not depend on which path built them. + const rowsOf = (out) => + out + .split(String.fromCharCode(10)) + .filter((line) => /^(OBJ|ARR|ASYNC|PROTO|BUFFER)=/.test(line)); + assert.deepStrictEqual(rowsOf(blocked.stdout), rowsOf(allowed.stdout)); + assert.match(blocked.stdout, /PROTO=true/); + assert.match(blocked.stdout, /BUFFER=true/); + }); +}); diff --git a/types/sqlite3.test-d.ts b/types/sqlite3.test-d.ts index 135c583..ea4228b 100644 --- a/types/sqlite3.test-d.ts +++ b/types/sqlite3.test-d.ts @@ -153,6 +153,12 @@ expectType(db.runSync('SELECT 1')); expectType(db.allSync('SELECT 1')); expectType<{ a: number }[]>(db.allSync<{ a: number }>('SELECT a')); expectType(db.prepareSync('SELECT 1')); +// rowMode: 'array' opts into the bulk-reader row shape (arrays). +expectType(db.getSync('SELECT 1', { rowMode: 'array' })); +expectType(db.allSync('SELECT 1', { rowMode: 'array' })); +expectType( + db.allSync('SELECT a FROM t WHERE b = ?', 5, { rowMode: 'array' }), +); // --- Database: statement cache, backup, transactions, iteration ---------- @@ -310,6 +316,8 @@ expectType>(stmt.iterate(1)); expectType>(stmt.iterate(1, { signal })); expectType(stmt.getSync(1)); expectType(stmt.allSync(1)); +expectType(stmt.getSync(1, { rowMode: 'array' })); +expectType(stmt.allSync({ rowMode: 'array' })); expectType(stmt.runSync(1)); expectType(stmt.sql); expectType(stmt.lastID); From 9d1b1651bd780a6b0099b94c1adde782ba603800 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Fri, 28 Aug 2026 15:20:13 +0100 Subject: [PATCH 30/33] Bind sync parameters straight onto the statement, with no per-parameter field Signed-off-by: Prabhu Subramanian --- README.md | 8 +- bench/baseline.json | 372 +++++++++++++++++++++++--------------------- docs/performance.md | 167 +++++++++++++------- lib/augment.d.ts | 7 +- lib/sqlite3.js | 87 +++++------ src/convert.cc | 200 +++++++++++++++++++++++- src/convert.h | 39 +++++ src/statement.cc | 178 +++++++++++++++++---- src/statement.h | 12 ++ test/sync.test.js | 245 ++++++++++++++++++++++++++++- 10 files changed, 975 insertions(+), 340 deletions(-) diff --git a/README.md b/README.md index 830be8d..966de18 100644 --- a/README.md +++ b/README.md @@ -197,11 +197,11 @@ keys carry a sigil — so the option is unambiguous.) `getSync/runSync/allSync` execute on the calling thread. On the benchmark suite (`pnpm run bench`, [docs/performance.md](docs/performance.md)), -cached single-row lookups are **7–10× faster** than the cached async +cached single-row lookups are **8–12× faster** than the cached async `get`/`run` -equivalents on arm64 macOS (9.6–10.4× for `getSync`, flat -from batches of 1 to 10,000; `runSync` 6.7× at one operation rising to -~8.7× at 10,000 as per-round overhead amortises) — and **22–31×** on +equivalents on arm64 macOS (10.4–11.8× for `getSync`, flat +from batches of 1 to 10,000; `runSync` 8.2× at one operation rising to +~11.5× at 10,000 as per-round overhead amortises) — and **22–31×** on Linux, where the async threadpool round trip costs more. For large result sets sync and async are level (20,000 rows × 4 cols measured within the noise floor): the marshalling is the same work either way, diff --git a/bench/baseline.json b/bench/baseline.json index 7edf97b..79b9ed8 100644 --- a/bench/baseline.json +++ b/bench/baseline.json @@ -3,7 +3,7 @@ "note": "Per-environment medians captured deliberately via `pnpm run bench:update`. Compare only within one platform-arch signature; ratios travel across platforms, absolute milliseconds do not. See docs/performance.md.", "environments": { "darwin-arm64": { - "capturedAt": "2026-08-28T13:47:32.911Z", + "capturedAt": "2026-08-28T14:18:52.262Z", "environment": { "node": "v26.7.0", "platform": "darwin", @@ -13,7 +13,7 @@ "container": "none", "sqliteVersion": "3.53.4", "packageVersion": "9.0.0", - "gitSha": "c15f9db+dirty", + "gitSha": "ad00b21+dirty", "exposeGc": true }, "config": { @@ -24,451 +24,461 @@ "rmeThresholdPct": 5, "allocSamples": 16 }, - "noiseFloorPct": 21.31, + "noiseFloorPct": 0.97, "cases": { + "calibration/cached get (A)": { + "medianPerOpMs": 0.00972161386861308, + "rme": 0.004080543133713708, + "n": 32 + }, "calibration/cached get (B)": { - "medianPerOpMs": 0.00958551321467099, - "rme": 0.014081790541349245, + "medianPerOpMs": 0.00981676694499021, + "rme": 0.005406130879215623, "n": 32 }, "read/all: 1,000 rows × 1 cols": { - "medianPerOpMs": 0.00020636297422680803, - "rme": 0.006044299333740295, + "medianPerOpMs": 0.00019203802427184588, + "rme": 0.005308414724579961, "n": 32 }, "read/all: 1,000 rows × 4 cols": { - "medianPerOpMs": 0.0006156354062500072, - "rme": 0.0056455390880785165, + "medianPerOpMs": 0.0005718482142857153, + "rme": 0.0060372164192122255, "n": 32 }, "read/all: 1,000 rows × 16 cols": { - "medianPerOpMs": 0.0008081770625000028, - "rme": 0.004567571168847488, + "medianPerOpMs": 0.000751451923076904, + "rme": 0.0105613475835268, "n": 32 }, "read/all: 20,000 rows × 1 cols": { - "medianPerOpMs": 0.00018146128333332854, - "rme": 0.004243616429854491, + "medianPerOpMs": 0.0001716034708333306, + "rme": 0.004215738837659999, "n": 32 }, "read/all: 20,000 rows × 4 cols": { - "medianPerOpMs": 0.0005631411499999786, - "rme": 0.00961126708643381, + "medianPerOpMs": 0.0005628099000000248, + "rme": 0.020059304216219785, "n": 32 }, "read/all: 20,000 rows × 16 cols": { - "medianPerOpMs": 0.0007762322999999469, - "rme": 0.009235991596876715, + "medianPerOpMs": 0.0007700718750000305, + "rme": 0.008243938268762062, "n": 32 }, "read/all: 200,000 rows × 1 cols": { - "medianPerOpMs": 0.00017552218750000066, - "rme": 0.004961381306849221, + "medianPerOpMs": 0.00017026187500000106, + "rme": 0.002379613756759575, "n": 32 }, "read/all: 200,000 rows × 4 cols": { - "medianPerOpMs": 0.0006039651049999976, - "rme": 0.007002854908305568, + "medianPerOpMs": 0.0005949469800000043, + "rme": 0.004265350670418305, "n": 32 }, "read/all: 200,000 rows × 16 cols": { - "medianPerOpMs": 0.0008313492725000105, - "rme": 0.01511166595746527, + "medianPerOpMs": 0.0008335711449999962, + "rme": 0.014906933948627825, "n": 32 }, + "read/all: 20,000 rows × 8 cols wide text": { + "medianPerOpMs": 0.0009154385499999989, + "rme": 0.04480090444090487, + "n": 48 + }, "read/all: 20,000 rows × 8 cols mostly NULL": { - "medianPerOpMs": 0.00031007534999998824, - "rme": 0.003641561102271489, + "medianPerOpMs": 0.00029764096666667683, + "rme": 0.006737003833151635, "n": 32 }, "read/get: single row (prepared statement)": { - "medianPerOpMs": 0.008778186199095019, - "rme": 0.008221295509792921, + "medianPerOpMs": 0.00902437866972515, + "rme": 0.010076902165969603, "n": 32 }, "read/each: 20,000 rows × 4 cols": { - "medianPerOpMs": 0.00048183385000002087, - "rme": 0.021773376860202188, + "medianPerOpMs": 0.0004406359375000193, + "rme": 0.022049098072061207, "n": 32 }, "read/iterate: 20,000 rows × 4 cols (for await)": { - "medianPerOpMs": 0.0006531130124999437, - "rme": 0.003930806835278726, + "medianPerOpMs": 0.0006363573000000543, + "rme": 0.0029349863670107956, "n": 32 }, "read/map: 20,000 rows × 4 cols": { - "medianPerOpMs": 0.0001937029149999944, - "rme": 0.006745716759146442, + "medianPerOpMs": 0.00018019132083333414, + "rme": 0.004806823728505691, "n": 32 }, "marshalling/integer ×20,000 (mode 'number')": { - "medianPerOpMs": 0.0001573447916666434, - "rme": 0.0053365154815062255, + "medianPerOpMs": 0.00015209077500003332, + "rme": 0.005333328953940915, "n": 32 }, "marshalling/integer ×20,000 (mode 'mixed')": { - "medianPerOpMs": 0.00015888889166665952, - "rme": 0.0091111099805847, + "medianPerOpMs": 0.00014972396071428063, + "rme": 0.003599236931548544, "n": 32 }, "marshalling/integer ×20,000 (mode 'bigint')": { - "medianPerOpMs": 0.00016081058749999405, - "rme": 0.012446151387036785, + "medianPerOpMs": 0.000156480383333322, + "rme": 0.0030236434456855413, "n": 32 }, "marshalling/float ×20,000": { - "medianPerOpMs": 0.0001597449625000081, - "rme": 0.006878346789956931, + "medianPerOpMs": 0.00015428125416668383, + "rme": 0.00373259054119854, "n": 32 }, "marshalling/short text ×20,000": { - "medianPerOpMs": 0.00018643520499997976, - "rme": 0.006131486807970686, + "medianPerOpMs": 0.00017517968333334767, + "rme": 0.003989451402342925, "n": 32 }, "marshalling/long text 4 KiB ×20,000": { - "medianPerOpMs": 0.001022622924999996, - "rme": 0.046357507582896335, + "medianPerOpMs": 0.0010108823000002302, + "rme": 0.040141827095041764, "n": 32 }, "marshalling/unicode text ×20,000": { - "medianPerOpMs": 0.0002811106749999908, - "rme": 0.007409248154583344, + "medianPerOpMs": 0.0002745356812499722, + "rme": 0.008301414098845907, "n": 32 }, "marshalling/NULL ×20,000": { - "medianPerOpMs": 0.00015441701250001644, - 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[How rows are built](#how-rows-are-built) + - [How parameters are bound](#how-parameters-are-bound) - [Statement preparation](#statement-preparation) - [BLOB columns](#blob-columns) - [Allocation per operation](#allocation-per-operation) @@ -87,17 +88,17 @@ per-op medians: | Case | async | sync | sync advantage | |---|---|---|---| -| `get`, batch of 1 | 9.68 µs/op | 930 ns/op | **10.4×** | -| `get`, batch of 10 | 9.38 µs/op | 974 ns/op | **9.6×** | -| `get`, batch of 100 | 9.71 µs/op | 988 ns/op | **9.8×** | -| `get`, batch of 10,000 | 9.63 µs/op | 1.00 µs/op | **9.6×** | -| `run`, batch of 1 | 11.43 µs/op | 1.71 µs/op | **6.7×** | -| `run`, batch of 10 | 10.33 µs/op | 1.19 µs/op | **8.7×** | -| `run`, batch of 100 | 10.34 µs/op | 1.18 µs/op | **8.8×** | -| `run`, batch of 10,000 | 10.37 µs/op | 1.19 µs/op | **8.7×** | -| `all`, 20,000 rows × 4 cols | 561 ns/row | 557 ns/row | parity (within the 3.8% floor) | - -Case RMEs were 0.3–1.9%. The claim is: **7–10× for single-row +| `get`, batch of 1 | 10.25 µs/op | 870 ns/op | **11.8×** | +| `get`, batch of 10 | 10.05 µs/op | 926 ns/op | **10.9×** | +| `get`, batch of 100 | 9.91 µs/op | 933 ns/op | **10.6×** | +| `get`, batch of 10,000 | 9.93 µs/op | 952 ns/op | **10.4×** | +| `run`, batch of 1 | 11.69 µs/op | 1.43 µs/op | **8.2×** | +| `run`, batch of 10 | 10.38 µs/op | 943 ns/op | **11.0×** | +| `run`, batch of 100 | 10.64 µs/op | 929 ns/op | **11.5×** | +| `run`, batch of 10,000 | 10.71 µs/op | 934 ns/op | **11.5×** | +| `all`, 20,000 rows × 4 cols | 562 ns/row | 565 ns/row | parity (within the 1.2% floor) | + +Case RMEs were 0.5–3.3%. The claim is: **8–12× for single-row interactive lookups and writes, flat from 1 to 10,000 operations, and level with async for large result sets** — the same marshalling work either way, with or without the threadpool round trip. @@ -110,21 +111,21 @@ size, which is why the ratio is flat. | Case | median | RME | |---|---|---| -| `all`: 1,000 rows × 1 col | 209 ns | 0.4% | -| `all`: 20,000 rows × 1 col | 182 ns | 0.6% | -| `all`: 200,000 rows × 1 col | 177 ns | 0.6% | -| `all`: 1,000 rows × 4 cols | 614 ns | 0.6% | -| `all`: 20,000 rows × 4 cols | 561 ns | 0.9% | -| `all`: 200,000 rows × 4 cols | 604 ns | 0.8% | -| `all`: 1,000 rows × 16 cols | 815 ns | 0.3% | -| `all`: 20,000 rows × 16 cols | 807 ns | 1.9% | -| `all`: 200,000 rows × 16 cols | 841 ns | 1.5% | +| `all`: 1,000 rows × 1 col | 211 ns | 0.4% | +| `all`: 20,000 rows × 1 col | 184 ns | 0.5% | +| `all`: 200,000 rows × 1 col | 179 ns | 0.7% | +| `all`: 1,000 rows × 4 cols | 603 ns | 0.8% | +| `all`: 20,000 rows × 4 cols | 562 ns | 1.1% | +| `all`: 200,000 rows × 4 cols | 600 ns | 0.8% | +| `all`: 1,000 rows × 16 cols | 831 ns | 0.3% | +| `all`: 20,000 rows × 16 cols | 803 ns | 0.9% | +| `all`: 200,000 rows × 16 cols | 832 ns | 1.6% | | `all`: 20,000 × 8 cols **wide text** (~100 chars) | REJECTED | — | -| `all`: 20,000 × 8 cols **mostly NULL** | 312 ns | 0.9% | -| `each`: 20,000 × 4 | 475 ns | 2.4% | -| `iterate` (`for await`): 20,000 × 4 | 657 ns | 1.0% | -| `map`: 20,000 × 4 | 195 ns | 0.5% | -| `get` single row (prepared statement) | 8.90 µs | 0.9% | +| `all`: 20,000 × 8 cols **mostly NULL** | 319 ns | 0.6% | +| `each`: 20,000 × 4 | 464 ns | 3.5% | +| `iterate` (`for await`): 20,000 × 4 | 658 ns | 1.0% | +| `map`: 20,000 × 4 | 200 ns | 0.7% | +| `get` single row (prepared statement) | 8.87 µs | 1.1% | Notes: per-row cost is flat from 20k to 200k rows (no hidden super-linear term). `each` beats `all` per row (no result array); @@ -136,21 +137,21 @@ like with like. | Value type | median/row | RME | |---|---|---| -| INTEGER (mode `number`) | 159 ns | 0.8% | -| INTEGER (mode `mixed`) | 157 ns | 0.7% | -| INTEGER (mode `bigint`) | 162 ns | 0.7% | -| REAL | 161 ns | 1.0% | -| TEXT short | 183 ns | 0.6% | -| TEXT 4 KiB | 1.04 µs | 4.9% | -| TEXT unicode | 278 ns | 0.7% | -| NULL | 147 ns | 0.6% | -| BLOB 64 B | 410 ns | 3.3% | -| BLOB 4,095 B (copy side of the boundary) | 990 ns | 1.6% | -| BLOB 4 KiB (zero-copy side) | 1.01 µs | 1.7% | -| BLOB 64 KiB × 4,096 | 5.13 µs | 1.0% | -| BLOB 1 MiB × 256 | 52.86 µs | 1.0% | -| blob round-trip 2,000 × 256 KiB | 94.84 µs | 0.4% | -| blob stream 100 MiB round trip | 26.42 ms | 1.9% | +| INTEGER (mode `number`) | 162 ns | 1.1% | +| INTEGER (mode `mixed`) | 160 ns | 0.7% | +| INTEGER (mode `bigint`) | 168 ns | 0.5% | +| REAL | 163 ns | 0.4% | +| TEXT short | 188 ns | 0.8% | +| TEXT 4 KiB | 1.01 µs | 4.6% | +| TEXT unicode | 289 ns | 0.7% | +| NULL | 150 ns | 0.5% | +| BLOB 64 B | 424 ns | 2.2% | +| BLOB 4,095 B (copy side of the boundary) | 973 ns | 1.3% | +| BLOB 4 KiB (zero-copy side) | 988 ns | 1.7% | +| BLOB 64 KiB × 4,096 | 5.02 µs | 0.6% | +| BLOB 1 MiB × 256 | 52.60 µs | 0.8% | +| blob round-trip 2,000 × 256 KiB | 96.37 µs | 0.8% | +| blob stream 100 MiB round trip | 26.15 ms | 1.9% | The 4,095/4,096 pair straddles the zero-copy boundary in `CellToJS` (`src/convert.cc`): at ≥ 4096 bytes the payload moves into an external @@ -166,16 +167,16 @@ allocator and GC behaviour that is genuinely bimodal. | Case | median | RME | |---|---|---| -| prepared `run` insert | 9.23 µs | 1.1% | -| `db.run` prepare-per-call | 19.69 µs | 1.3% | -| `db.run` with statement cache | 10.35 µs | 1.2% | -| `exec` 100-statement script | 929 ns/stmt | 0.6% | -| **1,000 inserts in one transaction (file db)** | **8.87 µs** | 0.7% | +| prepared `run` insert | 9.60 µs | 1.1% | +| `db.run` prepare-per-call | 19.72 µs | 1.3% | +| `db.run` with statement cache | 10.54 µs | 0.9% | +| `exec` 100-statement script | 944 ns/stmt | 0.6% | +| **1,000 inserts in one transaction (file db)** | **9.21 µs** | 0.5% | | 1,000 inserts autocommit (file db) | REJECTED (RME 81%; observed 175 µs–1.95 ms) | — | The transaction lever is the one case where the harness refuses to print the headline number, and the refusal *is* the finding: batched inserts -cost a stable ~8.9 µs each on a journal-backed file, while autocommit +cost a stable ~9.2 µs each on a journal-backed file, while autocommit inserts ranged from 175 µs to 1.95 ms — **at least 23× slower at the fast end of its own observed range, and up to ~260× at the slow end**. The distribution is intrinsically bimodal (journal create/delete and @@ -281,10 +282,12 @@ README quotes both. The `Database`-level forms keep a statement cache of their own, so `db.getSync(sql, ...)` does not prepare and finalize per call; that is automatic and needs no `cacheStatements()`. -- **Statement cache** (`db.cacheStatements()`): 2.4–2.6× on repeated - one-shot calls; first call of each SQL string pays the prepare. This - is the opt-in cache for the *asynchronous* calls — the synchronous - ones always cache (above). The +- **Statement cache** (`db.cacheStatements()`): ~1.9× on repeated + one-shot async calls (19.7 µs to 10.5 µs), because an uncached + `db.run` prepares on the threadpool and then runs on it — two round + trips. First call of each SQL string pays the prepare. This is the + opt-in cache for the *asynchronous* calls only — the synchronous ones + always cache (above). The cache is bypassed under `serialize()` and while an exclusive operation (`exec`/`close`/`wait`/`loadExtension`) is queued, so cached-call latency can differ by mode — the `miss`/`disabled` cases quantify the @@ -318,11 +321,18 @@ comparison. The fixture is `(INTEGER, REAL, TEXT, BLOB)` on both sides. | Case | `@appthreat/sqlite3` | `node:sqlite` | ratio | |---|---|---|---| -| `get` single row (prepared) | 895 ns | 816 ns | 1.10× slower | -| `all` 20,000 × 4 (objects) | 557 ns/row | 489 ns/row | 1.14× slower | -| `all` 20,000 × 4 (arrays: `rowMode`/`returnArrays`) | 563 ns/row | 374 ns/row | 1.51× slower | -| insert (prepared) | 1.19 µs | 816 ns | 1.46× slower | -| `exec` 100-statement script | 929 ns/stmt | 1.00 µs/stmt | 1.08× faster | +| `get` single row (prepared) | 847 ns | 826 ns | 1.03× slower | +| `all` 20,000 × 4 (objects) | 565 ns/row | 485 ns/row | 1.17× slower | +| `all` 20,000 × 4 (arrays: `rowMode`/`returnArrays`) | 572 ns/row | 379 ns/row | 1.51× slower | +| insert, `Database`-level | 934 ns | 839 ns | 1.11× slower | +| insert, prepared statement | 723 ns | 781 ns | **1.08× faster** | +| `exec` 100-statement script | 944 ns/stmt | 1.02 µs/stmt | **1.08× faster** | + +The two insert rows measure different things. `node:sqlite` has only the +prepared-statement form, and against that this package is ahead. The +`Database`-level `db.runSync(sql, ...)` additionally looks the statement +up in its cache and reads `lastID` and `changes` back — see +[Statement preparation](#statement-preparation). The read gap is almost entirely one column type. The fixture above is `(INTEGER, REAL, TEXT, BLOB)`; on the same four-column row *without* a @@ -400,6 +410,37 @@ Two limits are deliberate: to the store loop, so this is a performance feature that degrades rather than one that fails. +### How parameters are bound + +The synchronous calls bind each argument straight onto the statement +with `sqlite3_bind_*`. There is no intermediate: the asynchronous paths +build a `Values::Field` per parameter because they read the arguments on +the JS thread and apply them on a worker, but a synchronous call has no +hand-off to make, so that was a heap allocation per parameter (two for +text — the field and its `std::string`) on the path whose whole point is +minimal overhead. + +Text payloads are `malloc`'d once and handed to SQLite with `free` as +the destructor, so ownership transfers rather than the value being +copied a second time. Blobs bind `SQLITE_TRANSIENT`: SQLite copies them +before returning, which is what makes it safe not to keep the JS value +alive. + +Two details matter more than they look. The phrase naming a parameter in +an error message (`"parameter 3"`, `"parameter $name"`) is formatted only +when an error is actually raised — building it eagerly cost a heap +allocation per parameter on every successful bind. And the type dispatch +takes **one** `napi_typeof` and switches on it: node-addon-api's +`IsNumber()`, `IsString()` and friends each call `napi_typeof` +themselves, so an if-else chain over them pays that ABI call once per arm +it tries. + +The result is ~46 ns per bound parameter against `node:sqlite`'s ~30 ns, +and a prepared-statement insert that is faster than theirs outright. +`test/sync.test.js` holds this second implementation against the first: +every value shape and every failure must produce the same value and the +same error text through both. + ### Statement preparation `db.getSync`/`allSync`/`runSync` keep their own statement cache (64 @@ -411,6 +452,22 @@ the *asynchronous* calls only. Both caches are emptied by `close()` and by every user-function registration, since a prepared statement keeps invoking the implementation it was compiled against. +The asynchronous calls have no such default. `db.run(sql, ...)` without +`cacheStatements()` prepares on the threadpool and then runs on it — +two round trips instead of one, measured at 19.7 µs against 10.5 µs +cached. That default is deliberate: the cache is bypassed under +`serialize()` and while an exclusive operation is queued, so turning it +on changes call ordering and is the caller's decision. If you make +repeated one-shot async calls, call `cacheStatements()`. + +Above the statement itself, the `Database`-level `runSync` costs ~120 ns +more than the prepared form for reasons that are Node-API's floor rather +than ours: reading `lastID` and `changes` back is two accessor +crossings, and a Node-API accessor costs ~50 ns even when it returns a +bare boolean. Collapsing them into a single native call that builds the +result object in C++ measures *slower*, because the property stores cost +more than the crossing they save. + ### BLOB columns Blobs cost this package ~1.29× of `node:sqlite`, and the reason is the diff --git a/lib/augment.d.ts b/lib/augment.d.ts index 74a928e..9b28ac4 100644 --- a/lib/augment.d.ts +++ b/lib/augment.d.ts @@ -714,11 +714,8 @@ declare module './native.js' { * the caller's choice via `cacheStatements()`. @internal */ _syncStmtCache?: Map; - /** Sync-path statement resolver. @internal */ - _statementForSync(sql: string): { - statement: Statement; - transient: boolean; - }; + /** Sync-path statement resolver; always cached. @internal */ + _statementForSync(sql: string): Statement; /** Finalizes every cached statement, emptying the cache. @internal */ _drainStatementCache(): void; diff --git a/lib/sqlite3.js b/lib/sqlite3.js index b4e9e67..e69899d 100644 --- a/lib/sqlite3.js +++ b/lib/sqlite3.js @@ -1688,34 +1688,27 @@ function isSyncReadOptions(value) { * @throws {Error} When the database is not fully idle or binding fails. */ Database.prototype.getSync = function (sql, ...params) { - const entry = this._statementForSync(sql); + const statement = this._statementForSync(sql); // A trailing options bag is not a bind parameter: pull it out so the // zero-parameter reset below still sees the true parameter count. let options; if (params.length > 0 && isSyncReadOptions(params[params.length - 1])) { options = params.pop(); } - try { - // Same rule as the cached async get(): a Database-level get is - // an independent first-row query, not a cursor step, so a - // cached statement re-run without bind parameters starts from - // its first row again (the sync statement's re-stepping - // otherwise returns undefined from the second call on). - if ( - !entry.transient && - params.length === 0 && - entry.statement.parameterCount === 0 - ) { - params = [[]]; - } - return /** @type {T | undefined} */ ( - /** @type {(...args: unknown[]) => unknown} */ ( - entry.statement.getSync - )(...params, ...(options ? [options] : [])) - ); - } finally { - if (entry.transient) nativeStatementFinalize.call(entry.statement); + // Same rule as the cached async get(): a Database-level get is an + // independent first-row query, not a cursor step, so a cached + // statement re-run without bind parameters starts from its first row + // again (the sync statement's re-stepping otherwise returns undefined + // from the second call on). + if (params.length === 0 && statement.parameterCount === 0) { + params = [[]]; } + return /** @type {T | undefined} */ ( + /** @type {(...args: unknown[]) => unknown} */ (statement.getSync)( + ...params, + ...(options ? [options] : []), + ) + ); }; /** @@ -1728,18 +1721,14 @@ Database.prototype.getSync = function (sql, ...params) { * @throws {Error} When the database is not fully idle or binding fails. */ Database.prototype.runSync = function (sql, ...params) { - const entry = this._statementForSync(sql); - try { - /** @type {(...args: unknown[]) => unknown} */ ( - entry.statement.runSync - )(...params); - return { - lastID: /** @type {number} */ (entry.statement.lastID), - changes: /** @type {number} */ (entry.statement.changes), - }; - } finally { - if (entry.transient) nativeStatementFinalize.call(entry.statement); - } + const statement = this._statementForSync(sql); + /** @type {(...args: unknown[]) => unknown} */ (statement.runSync)( + ...params, + ); + return { + lastID: /** @type {number} */ (statement.lastID), + changes: /** @type {number} */ (statement.changes), + }; }; /** @@ -1754,28 +1743,24 @@ Database.prototype.runSync = function (sql, ...params) { * @throws {Error} When the database is not fully idle or binding fails. */ Database.prototype.allSync = function (sql, ...params) { - const entry = this._statementForSync(sql); - try { - return /** @type {T[]} */ ( - /** @type {(...args: unknown[]) => unknown} */ ( - entry.statement.allSync - )(...params) - ); - } finally { - if (entry.transient) nativeStatementFinalize.call(entry.statement); - } + const statement = this._statementForSync(sql); + return /** @type {T[]} */ ( + /** @type {(...args: unknown[]) => unknown} */ (statement.allSync)( + ...params, + ) + ); }; /** * Resolves `sql` to a statement for the sync methods. * - * Without the cache the statement is transient and the caller must - * finalize it: otherwise every sync call leaks a prepared statement and - * close() fails with SQLITE_BUSY. + * Always cached, so the statement outlives the call and the caller never + * finalizes it; both caches are emptied by close() and by every + * user-function registration. * * @this {import('./sqlite3-binding.js').Database} * @param {string} sql the SQL to prepare or reuse. - * @returns {{ statement: import('./sqlite3-binding.js').Statement, transient: boolean }} the statement and whether the caller must finalize it. + * @returns {import('./sqlite3-binding.js').Statement} the prepared statement. * @private */ Database.prototype._statementForSync = function (sql) { @@ -1789,7 +1774,7 @@ Database.prototype._statementForSync = function (sql) { if (statement !== undefined) { cache.delete(sql); cache.set(sql, statement); - return { statement: statement, transient: false }; + return statement; } const fresh = new Statement(this, sql, undefined, true); associateStatement(this, fresh); @@ -1805,7 +1790,7 @@ Database.prototype._statementForSync = function (sql) { cache.delete(oldestSql); nativeStatementFinalize.call(oldest); } - return { statement: fresh, transient: false }; + return fresh; } // No user-enabled cache: the sync paths still keep one of their own. // @@ -1831,7 +1816,7 @@ Database.prototype._statementForSync = function (sql) { // moves the entry to the end and keys().next() stays the oldest. syncCache.delete(sql); syncCache.set(sql, cached); - return { statement: cached, transient: false }; + return cached; } const prepared = associateStatement( this, @@ -1848,7 +1833,7 @@ Database.prototype._statementForSync = function (sql) { syncCache.delete(oldestSql); nativeStatementFinalize.call(oldest); } - return { statement: prepared, transient: false }; + return prepared; }; // Database#close flushes the statement cache first: sqlite3_close fails diff --git a/src/convert.cc b/src/convert.cc index 3a06428..2c9e51b 100644 --- a/src/convert.cc +++ b/src/convert.cc @@ -92,7 +92,15 @@ std::unique_ptr ConvertToField(const Napi::Value source, // nothing can silently skip a value. The constructors carry the bind // position (index or name) through to Bind(Parameters&&, bool). #define MAKE_FIELD(kind, ...) (pos.index > 0 ? std::make_unique(pos.index, __VA_ARGS__) : std::make_unique(pos.name, __VA_ARGS__)) - if (source.IsNumber()) { + // One napi_typeof up front, then compare against it. Each of + // node-addon-api's IsNumber()/IsString()/... calls napi_typeof itself, + // so an if-else chain over them pays that ABI call once per arm it + // tries — six times over for a value that turns out to be a BigInt. + napi_valuetype vtype = napi_undefined; + if (napi_typeof(source.Env(), source, &vtype) != napi_ok) { + return nullptr; + } + if (vtype == napi_number) { double val = source.As().DoubleValue(); // Number.isInteger within the int64 range binds as INTEGER (64-bit, // not the old Int32 round-trip). NaN and ±Infinity fail the @@ -109,19 +117,19 @@ std::unique_ptr ConvertToField(const Napi::Value source, } return MAKE_FIELD(Float, val); } - else if (source.IsString()) { + else if (vtype == napi_string) { std::string val = source.As().Utf8Value(); return MAKE_FIELD(Text, val.length(), val.c_str()); } - else if (source.IsBoolean()) { + else if (vtype == napi_boolean) { return MAKE_FIELD(Integer, source.As().Value() ? 1 : 0); } - else if (source.IsNull()) { + else if (vtype == napi_null) { return pos.index > 0 ? std::make_unique(pos.index) : std::make_unique(pos.name); } - else if (source.IsUndefined()) { + else if (vtype == napi_undefined) { // Binds as NULL, matching null: object shorthand // { $x: obj.maybeMissing } is a common call shape. Typo'd property // names are caught by the named-parameter and arity checks in @@ -132,7 +140,7 @@ std::unique_ptr ConvertToField(const Napi::Value source, field->from_undefined = true; return field; } - else if (source.IsBigInt()) { + else if (vtype == napi_bigint) { bool lossless = false; int64_t val = source.As().Int64Value(&lossless); if (!lossless) { @@ -145,6 +153,11 @@ std::unique_ptr ConvertToField(const Napi::Value source, } return MAKE_FIELD(Integer, val); } + else if (vtype != napi_object) { + // Symbols, functions, external values. + ThrowUnsupportedBindType(source, subject); + return nullptr; + } else if (source.IsDataView()) { // Must be tested before IsBuffer(): napi_is_buffer() also answers // true for DataViews, and routing one through Napi::Buffer fails @@ -228,6 +241,181 @@ std::unique_ptr ConvertToField(const Napi::Value source, #undef MAKE_FIELD } +std::string BindSubject::Describe() const { + if (name != nullptr) return std::string("parameter ") + name; + return "parameter " + std::to_string(index); +} + +bool BindValueDirect(sqlite3_stmt* stmt, int pos, const Napi::Value source, + const BindSubject& subject, int* rc, bool* from_undefined) { + auto env = source.Env(); + + // One napi_typeof, then a switch. node-addon-api's IsNumber()/ + // IsString()/... each call napi_typeof, so an if-else chain over them + // pays that ABI call once per arm it tries. + napi_valuetype type = napi_undefined; + if (napi_typeof(env, source, &type) != napi_ok) return false; + + switch (type) { + case napi_number: { + const double val = source.As().DoubleValue(); + // Number.isInteger within the int64 range binds as INTEGER; + // NaN and +/-Infinity fail the finiteness test and bind REAL. + if (std::isfinite(val) && val == std::trunc(val) + && val >= kInt64MinAsDouble && val < kInt64MaxAsDouble) { + *rc = sqlite3_bind_int64(stmt, pos, static_cast(val)); + return true; + } + if (val == kInt64MaxAsDouble) { + // 2^63 as a double is the rounded form of 2^63-1: clamp so + // the top of the range stays reachable from a JS number. + *rc = sqlite3_bind_int64(stmt, pos, INT64_MAX); + return true; + } + *rc = sqlite3_bind_double(stmt, pos, val); + return true; + } + case napi_string: { + // Two napi calls (length, then write) is the documented way to + // read a string of unknown length; the payload is malloc'd + // once and handed to SQLite rather than copied into a + // std::string and then copied again. + size_t length = 0; + if (napi_get_value_string_utf8(env, source, NULL, 0, &length) + != napi_ok) { + return false; + } + char* buffer = static_cast(malloc(length + 1)); + if (buffer == NULL) { + Napi::Error::New(env, "Cannot bind " + subject.Describe() + + ": out of memory").ThrowAsJavaScriptException(); + return false; + } + size_t written = 0; + if (napi_get_value_string_utf8(env, source, buffer, length + 1, + &written) != napi_ok) { + free(buffer); + return false; + } + *rc = sqlite3_bind_text64(stmt, pos, buffer, + static_cast(written), free, SQLITE_UTF8); + return true; + } + case napi_boolean: { + *rc = sqlite3_bind_int64(stmt, pos, + source.As().Value() ? 1 : 0); + return true; + } + case napi_null: { + *rc = sqlite3_bind_null(stmt, pos); + return true; + } + case napi_undefined: { + // Binds as NULL, like the Field path; the caller uses + // `from_undefined` for the zero-parameter call shape. + if (from_undefined != NULL) *from_undefined = true; + *rc = sqlite3_bind_null(stmt, pos); + return true; + } + case napi_bigint: { + bool lossless = false; + const int64_t val = + source.As().Int64Value(&lossless); + if (!lossless) { + const std::string digits = source.ToString().Utf8Value(); + Napi::RangeError::New(env, + "Cannot bind " + subject.Describe() + ": BigInt " + + digits + " is outside the signed 64-bit integer range" + ).ThrowAsJavaScriptException(); + return false; + } + *rc = sqlite3_bind_int64(stmt, pos, val); + return true; + } + case napi_object: + break; // handled below + default: + // Symbols, functions, external values. + ThrowUnsupportedBindType(source, subject.Describe()); + return false; + } + + // Binary views. SQLITE_TRANSIENT: SQLite copies before returning, so + // the JS-owned bytes need not outlive this call. + const void* data = NULL; + size_t bytes = 0; + const char* kind = NULL; + if (source.IsDataView()) { + // Before IsBuffer(): napi_is_buffer() also answers true for a + // DataView, and routing one through Napi::Buffer fails. + napi_get_dataview_info(env, source, &bytes, + const_cast(&data), NULL, NULL); + kind = "DataView"; + } + else if (source.IsBuffer()) { + // Node Buffers and plain Uint8Arrays: Data() and Length() honour + // byteOffset for both. + Napi::Buffer buffer = source.As>(); + data = buffer.Data(); + bytes = buffer.Length(); + kind = "Buffer"; + } + else if (source.IsTypedArray()) { + napi_typedarray_type ta_type; + size_t elements = 0; + napi_get_typedarray_info(env, source, &ta_type, &elements, + const_cast(&data), NULL, NULL); + bytes = elements * TypedArrayElementSize(ta_type); + kind = "typed array"; + } + else if (source.IsArrayBuffer()) { + Napi::ArrayBuffer buffer = source.As(); + data = buffer.Data(); + bytes = buffer.ByteLength(); + kind = "ArrayBuffer"; + } + + if (kind != NULL) { + if (bytes > static_cast(std::numeric_limits::max())) { + // Views can exceed 2 GB on 64-bit Node; the wording matches + // the Field path per shape. + const std::string what = std::strcmp(kind, "ArrayBuffer") == 0 + ? "ArrayBuffer exceeds the bind size limit" + : std::string(kind) + " of " + std::to_string(bytes) + + " bytes exceeds the bind size limit"; + Napi::RangeError::New(env, + "Cannot bind " + subject.Describe() + ": " + what + ).ThrowAsJavaScriptException(); + return false; + } + // A zero-length view can carry a NULL data pointer, and + // sqlite3_bind_blob64(NULL, 0) binds SQL NULL rather than an empty + // blob. The Field path always had a real allocation behind it, so + // an empty Buffer round-tripped as an empty blob; keep that by + // handing SQLite a non-NULL pointer it will read zero bytes from. + *rc = sqlite3_bind_blob64(stmt, pos, data != NULL ? data : "", + static_cast(bytes), SQLITE_TRANSIENT); + return true; + } + + if (source.IsDate()) { + // Documented v8/v9 behaviour: epoch milliseconds as REAL. + *rc = sqlite3_bind_double(stmt, pos, + source.As().ValueOf()); + return true; + } + if (OtherInstanceOf(source.As(), "RegExp")) { + const std::string val = source.ToString().Utf8Value(); + *rc = sqlite3_bind_text64(stmt, pos, val.c_str(), + static_cast(val.length()), + SQLITE_TRANSIENT, SQLITE_UTF8); + return true; + } + // Plain objects, arrays, Maps, class instances: refused. + ThrowUnsupportedBindType(source, subject.Describe()); + return false; +} + void ValueToCell(Cell* cell, sqlite3_value* value) { cell->str.clear(); cell->integer = 0; diff --git a/src/convert.h b/src/convert.h index f8a563b..e5bd249 100644 --- a/src/convert.h +++ b/src/convert.h @@ -236,6 +236,45 @@ Napi::Value CellToJS(Napi::Env env, Cell& cell, int integer_mode, Napi::Value ColumnToJS(Napi::Env env, sqlite3_stmt* stmt, int column, int integer_mode, const ValueOrigin& origin, bool* raised = nullptr); +// Binds one JS value straight onto a prepared statement, with no +// intermediate Values::Field. +// +// The Field exists for the *asynchronous* paths, where the bind arguments +// are read on the JS thread and applied later on a worker thread — there +// the copy is what makes the hand-off possible. The synchronous paths have +// no hand-off, so a Field per parameter was a heap allocation (two, for +// text: the Field and its std::string) on a path whose whole point is +// minimal overhead. +// +// Type dispatch, coercions and error text match ConvertToField exactly; +// the two live side by side so they cannot drift apart unnoticed. +// +// Text payloads are malloc'd and handed to SQLite with `free` as the +// destructor, so ownership transfers instead of the value being copied a +// second time. SQLite runs that destructor even when the bind call fails, +// so there is no leak on the error path. Blobs are bound +// SQLITE_TRANSIENT: SQLite copies them immediately, which is what makes +// it safe not to keep the JS value alive. +// +// `rc` receives the sqlite3_bind_* result. `from_undefined` reports an +// explicit `undefined` argument, for the zero-parameter escape hatch in +// Statement::BindArgumentsDirect. Returns false with a pending JS +// exception for a value that cannot be bound at all. +// Names a bind position in an error message ("parameter 3", +// "parameter $name"), formatted only when an error is actually raised. +// Building it eagerly cost a heap allocation per parameter on every +// successful bind, which is the whole call for a small insert. +struct BindSubject { + int index = 0; + const char* name = nullptr; + explicit BindSubject(int i) : index(i) {} + explicit BindSubject(const char* n) : name(n) {} + std::string Describe() const; +}; + +bool BindValueDirect(sqlite3_stmt* stmt, int pos, const Napi::Value source, + const BindSubject& subject, int* rc, bool* from_undefined); + } #endif diff --git a/src/statement.cc b/src/statement.cc index 94dd64d..3875fcb 100644 --- a/src/statement.cc +++ b/src/statement.cc @@ -634,6 +634,142 @@ bool Statement::Bind(Parameters&& parameters, bool supplied) { return true; } +bool Statement::BindArgumentsDirect(const Napi::CallbackInfo& info, + int start, int last, bool supplied) { + auto env = info.Env(); + + if (!supplied) { + // A call with no bind argument re-steps the statement with its + // previous bindings, so nothing here may touch them — including + // bound_payloads, whose SQLITE_STATIC pointers are still live. + return true; + } + + // Resolve the argument shape and the values it carries, without + // converting anything yet: the arity check has to run before the first + // bind so a mismatched call cannot half-bind the statement. + enum Shape { POSITIONAL, ARRAY, NAMED } shape = POSITIONAL; + Napi::Array array; + Napi::Object object; + Napi::Array keys; + int count = 0; + + if (start < last && info[start].IsArray()) { + shape = ARRAY; + array = info[start].As(); + count = static_cast(array.Length()); + } + // Cheap checks first; IsDate matches across realms, and the RegExp + // global lookup only runs once the value is known to be an object. + // Binary views go positional like the other non-map bind shapes. + else if (start < last && info[start].IsObject() + && !info[start].IsBuffer() && !info[start].IsTypedArray() + && !info[start].IsDataView() && !info[start].IsArrayBuffer() + && !info[start].IsDate() + && !OtherInstanceOf(info[start].As(), "RegExp")) { + shape = NAMED; + object = info[start].As(); + keys = object.GetPropertyNames(); + if (env.IsExceptionPending()) return false; + count = static_cast(keys.Length()); + } + else { + count = last - start; + } + + // Order matches the Field path: the statement is reset and its + // bindings cleared before the checks, so a rejected call leaves no + // stale binding behind either way. + sqlite3_reset(_handle); + sqlite3_clear_bindings(_handle); + bound_payloads.clear(); + + const int expected = sqlite3_bind_parameter_count(_handle); + + // Historical "accidental undefined" call shape: a parameter list made + // up entirely of `undefined` against a statement with no parameters is + // ignored, so generic wrappers forwarding an absent value keep + // working. Only reachable when the statement takes no parameters, so + // the extra pass costs nothing on the hot path. + if (expected == 0 && count > 0) { + bool all_undefined = true; + for (int i = 0; i < count && all_undefined; i++) { + Napi::Value value = shape == ARRAY ? array.Get(i) + : shape == NAMED ? object.Get(keys.Get(i)) + : info[start + i]; + if (env.IsExceptionPending()) return false; + if (!value.IsUndefined()) all_undefined = false; + } + if (all_undefined) return true; + } + + if (count != expected) { + status = SQLITE_RANGE; + message = "supplied " + std::to_string(count) + + " parameter(s) but the statement takes " + + std::to_string(expected); + return false; + } + + for (int i = 0; i < count; i++) { + Napi::Value value; + int pos = i + 1; + // Only set for a genuinely named parameter; the subject is a + // borrowed view either way and formats nothing unless it throws. + std::string param_name; + bool named = false; + + if (shape == NAMED) { + Napi::Value name = keys.Get(i); + if (env.IsExceptionPending()) return false; + Napi::Number num = name.ToNumber(); + if (num.Int32Value() == num.DoubleValue()) { + pos = num.Int32Value(); + } + else { + param_name = name.As().Utf8Value(); + named = true; + pos = sqlite3_bind_parameter_index(_handle, + param_name.c_str()); + if (pos == 0) { + // Almost always a typo'd key. Clear the partial + // bindings, like the bind-failure path below. + sqlite3_clear_bindings(_handle); + status = SQLITE_RANGE; + message = "unknown named parameter \"" + param_name + + "\""; + return false; + } + } + value = object.Get(name); + } + else { + value = shape == ARRAY ? array.Get(i) : info[start + i]; + } + if (env.IsExceptionPending()) return false; + + int rc = SQLITE_OK; + const BindSubject subject = named + ? BindSubject(param_name.c_str()) : BindSubject(pos); + if (!BindValueDirect(_handle, pos, value, subject, &rc, NULL)) { + // BindValueDirect threw for an unsupported value. + sqlite3_clear_bindings(_handle); + return false; + } + if (rc != SQLITE_OK) { + // Clear every binding so no partially bound statement is left + // reachable. + sqlite3_clear_bindings(_handle); + status = rc; + message = std::string(sqlite3_errmsg(db->_handle)); + return false; + } + } + + status = SQLITE_OK; + return true; +} + Napi::Value Statement::Bind(const Napi::CallbackInfo& info) { auto env = info.Env(); Statement* stmt = this; @@ -1399,16 +1535,7 @@ Napi::Value Statement::GetSync(const Napi::CallbackInfo& info) { return env.Null(); } - Parameters parameters; const bool bind_supplied = (end > 0); - if (end > 0 - && !ParseBindArguments(info, 0, end, ¶meters)) { - if (!env.IsExceptionPending()) { - Napi::TypeError::New(env, "Data type is not supported") - .ThrowAsJavaScriptException(); - } - return env.Null(); - } // While this thread is inside sqlite, a user-defined function invoked // by the statement must refuse to make its round trip (it would wait @@ -1417,8 +1544,9 @@ Napi::Value Statement::GetSync(const Napi::CallbackInfo& info) { // Mirrors Work_Get: step unless the cursor is already exhausted and // no new parameters were supplied. - if (stmt->status != SQLITE_DONE || parameters.size() || bind_supplied) { - if (!stmt->Bind(std::move(parameters), bind_supplied)) { + if (stmt->status != SQLITE_DONE || bind_supplied) { + if (!stmt->BindArgumentsDirect(info, 0, end, bind_supplied)) { + if (env.IsExceptionPending()) return env.Null(); stmt->ThrowStatementError(env); return env.Null(); } @@ -1462,26 +1590,18 @@ Napi::Value Statement::RunSync(const Napi::CallbackInfo& info) { return env.Null(); } - Parameters parameters; const bool bind_supplied = (end > 0); - if (end > 0 - && !ParseBindArguments(info, 0, end, ¶meters)) { - if (!env.IsExceptionPending()) { - Napi::TypeError::New(env, "Data type is not supported") - .ThrowAsJavaScriptException(); - } - return env.Null(); - } Database::SyncSqliteGuard sync_guard(stmt->db); // Mirrors Work_Run, including the explicit reset for parameterless // re-execution. - if (parameters.empty() && !bind_supplied) { + if (!bind_supplied) { sqlite3_reset(stmt->_handle); } - if (!stmt->Bind(std::move(parameters), bind_supplied)) { + if (!stmt->BindArgumentsDirect(info, 0, end, bind_supplied)) { + if (env.IsExceptionPending()) return env.Null(); stmt->ThrowStatementError(env); return env.Null(); } @@ -1516,24 +1636,16 @@ Napi::Value Statement::AllSync(const Napi::CallbackInfo& info) { return env.Null(); } - Parameters parameters; const bool bind_supplied = (end > 0); - if (end > 0 - && !ParseBindArguments(info, 0, end, ¶meters)) { - if (!env.IsExceptionPending()) { - Napi::TypeError::New(env, "Data type is not supported") - .ThrowAsJavaScriptException(); - } - return env.Null(); - } Database::SyncSqliteGuard sync_guard(stmt->db); - if (parameters.empty() && !bind_supplied) { + if (!bind_supplied) { sqlite3_reset(stmt->_handle); } - if (!stmt->Bind(std::move(parameters), bind_supplied)) { + if (!stmt->BindArgumentsDirect(info, 0, end, bind_supplied)) { + if (env.IsExceptionPending()) return env.Null(); stmt->ThrowStatementError(env); return env.Null(); } diff --git a/src/statement.h b/src/statement.h index e48c7c4..131c1a9 100644 --- a/src/statement.h +++ b/src/statement.h @@ -352,6 +352,18 @@ class Statement : public Napi::ObjectWrap { int last, Parameters* parameters); bool Bind(Parameters&& parameters, bool supplied); + // The synchronous counterpart of ParseBindArguments + Bind: applies the + // call's bind arguments straight onto the statement, with no + // Parameters vector and no heap Values::Field per parameter. + // + // Accepts the same three argument shapes, performs the same arity and + // named-parameter checks, produces the same error text, and leaves the + // statement in the same state on failure. The asynchronous paths keep + // the Field route: they read the arguments on the JS thread and apply + // them on a worker, so there the materialisation is the hand-off. + bool BindArgumentsDirect(const Napi::CallbackInfo& info, int start, + int last, bool supplied); + static void GetRow(Row* row, sqlite3_stmt* stmt, Columns* columns); // Rebuilds the rooted JS key strings if `columns` differs from the set // they were built from. Call once per batch, before RowToJS. diff --git a/test/sync.test.js b/test/sync.test.js index 27458cd..0ff5d99 100644 --- a/test/sync.test.js +++ b/test/sync.test.js @@ -388,10 +388,9 @@ describe('sync fast path after a throwing callback', function () { }); }); -// Without cacheStatements() the sync methods prepare a transient statement -// per call. It must be finalized, or every call leaks a prepared statement -// and close() fails with SQLITE_BUSY. -describe('sync fast path without the statement cache', function () { +// The sync methods cache their prepared statements, so those outlive the +// call. close() must drain that cache, or it fails with SQLITE_BUSY. +describe('sync fast path statement lifetime', function () { it('does not leak prepared statements', function (_t, done) { const db = new sqlite3.Database(':memory:'); db.run('CREATE TABLE t (i)', function () { @@ -409,7 +408,7 @@ describe('sync fast path without the statement cache', function () { i + 1, ); } - // Fails with SQLITE_BUSY if any transient statement leaked. + // Fails with SQLITE_BUSY if the cache was not drained. db.close(function (err) { assert.ifError(err); done(); @@ -1016,3 +1015,239 @@ describe('row factory: realms that forbid code generation', function () { assert.match(blocked.stdout, /BUFFER=true/); }); }); + +// The synchronous paths bind straight onto the statement instead of +// building a Values::Field per parameter (src/convert.cc BindValueDirect). +// That is a second implementation of the bind semantics, so these tests +// hold it against the first one: for every value shape and every failure, +// the sync paths must agree with the asynchronous Field path exactly. +describe('sync bind agrees with the async bind path', function () { + /** @type {import('../lib/sqlite3.js').Database} */ + let db; + + beforeEach(async function () { + db = await sqlite3.open(':memory:'); + await db.exec('CREATE TABLE t (v)'); + }); + + afterEach(async function () { + await db.close(); + }); + + /** + * Round-trips one value through both bind implementations. + * @param {unknown} value the value to bind. + * @returns {Promise<{sync: unknown, async: unknown}>} both readings. + */ + async function bothPaths(value) { + await db.run('DELETE FROM t'); + db.runSync('INSERT INTO t VALUES (?)', value); + const sync = db.getSync('SELECT v FROM t').v; + await db.run('DELETE FROM t'); + await db.run('INSERT INTO t VALUES (?)', value); + const asyncRead = (await db.get('SELECT v FROM t')).v; + return { sync, async: asyncRead }; + } + + const cases = [ + ['integer', 42], + ['negative integer', -7], + ['zero', 0], + ['large safe integer', 9007199254740991], + ['float', 1.5], + ['NaN', Number.NaN], + ['Infinity', Number.POSITIVE_INFINITY], + ['string', 'hello'], + ['empty string', ''], + ['unicode string', 'héllo—✓'], + ['string with NUL', 'a\u0000b'], + ['true', true], + ['false', false], + ['null', null], + ['bigint', 123n], + ['negative bigint', -123n], + ]; + + for (const [label, value] of cases) { + it(`binds ${label} identically`, async function () { + const { sync, async: asyncValue } = await bothPaths(value); + assert.deepStrictEqual(sync, asyncValue); + }); + } + + it('binds an empty Buffer as an empty blob, not NULL', async function () { + const { sync, async: asyncValue } = await bothPaths(Buffer.alloc(0)); + assert.ok(Buffer.isBuffer(sync), 'sync bound NULL, not a blob'); + assert.strictEqual(/** @type {Buffer} */ (sync).length, 0); + assert.deepStrictEqual(sync, asyncValue); + }); + + it('binds Buffers, typed arrays, DataViews and ArrayBuffers alike', async function () { + const bytes = [1, 2, 3, 4]; + const views = [ + Buffer.from(bytes), + new Uint8Array(bytes), + new DataView(new Uint8Array(bytes).buffer), + new Uint8Array(bytes).buffer, + ]; + for (const view of views) { + const { sync, async: asyncValue } = await bothPaths(view); + assert.deepStrictEqual([.../** @type {Buffer} */ (sync)], bytes); + assert.deepStrictEqual(sync, asyncValue); + } + }); + + it('binds a Date as epoch milliseconds', async function () { + const date = new Date(1700000000000); + const { sync, async: asyncValue } = await bothPaths(date); + assert.strictEqual(sync, 1700000000000); + assert.strictEqual(sync, asyncValue); + }); + + it('binds a byteOffset view without the whole backing buffer', async function () { + const backing = new Uint8Array([9, 9, 1, 2, 3, 9]); + const view = backing.subarray(2, 5); + const { sync } = await bothPaths(view); + assert.deepStrictEqual([.../** @type {Buffer} */ (sync)], [1, 2, 3]); + }); + + /** + * Captures the error message from each path for the same call. + * @param {unknown[]} params the bind parameters. + * @param {string} [sql] the statement to bind against. + * @returns {Promise<{sync: string, async: string}>} both messages. + */ + async function bothErrors(params, sql = 'INSERT INTO t VALUES (?)') { + let syncMessage = '(no error)'; + try { + db.runSync(sql, ...params); + } catch (err) { + syncMessage = /** @type {Error} */ (err).message; + } + let asyncMessage = '(no error)'; + try { + await db.run(sql, ...params); + } catch (err) { + asyncMessage = /** @type {Error} */ (err).message; + } + return { sync: syncMessage, async: asyncMessage }; + } + + it('reports too few parameters identically', async function () { + const { sync, async: asyncMessage } = await bothErrors( + [1], + 'INSERT INTO t SELECT ? UNION ALL SELECT ?', + ); + assert.match( + sync, + /supplied 1 parameter\(s\) but the statement takes 2/, + ); + assert.strictEqual(sync, asyncMessage); + }); + + it('reports too many parameters identically', async function () { + const { sync, async: asyncMessage } = await bothErrors([1, 2, 3]); + assert.match( + sync, + /supplied 3 parameter\(s\) but the statement takes 1/, + ); + assert.strictEqual(sync, asyncMessage); + }); + + it('reports an unknown named parameter identically', async function () { + const { sync, async: asyncMessage } = await bothErrors( + [{ $nope: 1 }], + 'INSERT INTO t VALUES ($v)', + ); + assert.match(sync, /unknown named parameter "\$nope"/); + assert.strictEqual(sync, asyncMessage); + }); + + it('reports an unsupported type identically', async function () { + // A bare object is the named-parameters shape, not a value; nest + // it in the array form so it is bound as one. + const { sync, async: asyncMessage } = await bothErrors([[{ a: 1 }]]); + assert.match(sync, /Cannot bind parameter 1: unsupported type Object/); + assert.strictEqual(sync, asyncMessage); + }); + + it('reports an out-of-range BigInt identically', async function () { + const huge = 2n ** 64n; + const { sync, async: asyncMessage } = await bothErrors([huge]); + assert.match(sync, /BigInt .* outside the signed 64-bit integer range/); + assert.strictEqual(sync, asyncMessage); + }); + + it('names the offending parameter by position', async function () { + const { sync } = await bothErrors( + [1, Symbol('x')], + 'INSERT INTO t VALUES (?), (?)', + ); + assert.match(sync, /Cannot bind parameter 2:/); + }); + + it('names a failing named parameter by name', async function () { + const { sync } = await bothErrors( + [{ $v: Symbol('x') }], + 'INSERT INTO t VALUES ($v)', + ); + assert.match(sync, /Cannot bind parameter \$v:/); + }); + + it('accepts array, positional and named shapes alike', function () { + db.runSync('DELETE FROM t'); + db.runSync('INSERT INTO t VALUES (?)', 1); + db.runSync('INSERT INTO t VALUES (?)', [2]); + db.runSync('INSERT INTO t VALUES ($v)', { $v: 3 }); + assert.deepStrictEqual( + db.allSync('SELECT v FROM t ORDER BY v').map((r) => r.v), + [1, 2, 3], + ); + }); + + it('leaves no partial binding behind after a failed bind', function () { + db.runSync('DELETE FROM t'); + assert.throws(() => + db.runSync('INSERT INTO t VALUES (?), (?)', 1, Symbol('x')), + ); + // The statement must be re-runnable with a valid call afterwards. + db.runSync('INSERT INTO t VALUES (?), (?)', 4, 5); + assert.deepStrictEqual( + db.allSync('SELECT v FROM t ORDER BY v').map((r) => r.v), + [4, 5], + ); + }); + + it('re-steps a parameterless statement without rebinding', async function () { + const statement = db.prepare('INSERT INTO t VALUES (7)'); + await db.wait(); + statement.runSync(); + statement.runSync(); + assert.strictEqual(db.getSync('SELECT count(*) AS n FROM t').n, 2); + statement.finalize(); + }); + + it('keeps a previous binding when re-run with no arguments', async function () { + const statement = db.prepare('INSERT INTO t VALUES (?)'); + await db.wait(); + statement.runSync(11); + statement.runSync(); + assert.deepStrictEqual( + db.allSync('SELECT v FROM t').map((r) => r.v), + [11, 11], + ); + statement.finalize(); + }); + + it('ignores an all-undefined call against a parameterless statement', function () { + // Historical call shape: generic wrappers forwarding an absent + // value must not trip the arity check. + db.runSync('INSERT INTO t VALUES (7)', undefined); + assert.strictEqual(db.getSync('SELECT count(*) AS n FROM t').n, 1); + }); + + it('binds undefined as NULL when the statement takes a parameter', function () { + db.runSync('INSERT INTO t VALUES (?)', undefined); + assert.strictEqual(db.getSync('SELECT v FROM t').v, null); + }); +}); From 15d546806d6db86c8301c5e3ea3f9d547c8387ce Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Fri, 28 Aug 2026 16:17:02 +0100 Subject: [PATCH 31/33] Bind named parameters without coercing every key or re-reading the globals --- bench/baseline.json | 387 ++++++++++++++++++++++---------------------- bench/cases/sync.js | 33 ++++ docs/performance.md | 48 ++++++ src/convert.cc | 141 +++++++++++++++- src/convert.h | 52 ++++++ src/database.h | 13 ++ src/statement.cc | 73 +++------ test/sync.test.js | 144 +++++++++++++++++ 8 files changed, 642 insertions(+), 249 deletions(-) diff --git a/bench/baseline.json b/bench/baseline.json index 79b9ed8..8e4cf57 100644 --- a/bench/baseline.json +++ b/bench/baseline.json @@ -3,7 +3,7 @@ "note": "Per-environment medians captured deliberately via `pnpm run bench:update`. Compare only within one platform-arch signature; ratios travel across platforms, absolute milliseconds do not. See docs/performance.md.", "environments": { "darwin-arm64": { - "capturedAt": "2026-08-28T14:18:52.262Z", + "capturedAt": "2026-08-28T15:15:46.037Z", "environment": { "node": "v26.7.0", "platform": "darwin", @@ -13,7 +13,7 @@ "container": "none", "sqliteVersion": "3.53.4", "packageVersion": "9.0.0", - "gitSha": "ad00b21+dirty", + "gitSha": "9d1b165+dirty", "exposeGc": true }, "config": { @@ -24,461 +24,466 @@ "rmeThresholdPct": 5, "allocSamples": 16 }, - "noiseFloorPct": 0.97, + "noiseFloorPct": 1.69, "cases": { "calibration/cached get (A)": { - "medianPerOpMs": 0.00972161386861308, - "rme": 0.004080543133713708, + "medianPerOpMs": 0.00969796831683166, + "rme": 0.0037269340276194535, "n": 32 }, "calibration/cached get (B)": { - "medianPerOpMs": 0.00981676694499021, - "rme": 0.005406130879215623, + "medianPerOpMs": 0.009863701525590698, + "rme": 0.004187862406014868, "n": 32 }, "read/all: 1,000 rows × 1 cols": { - "medianPerOpMs": 0.00019203802427184588, - "rme": 0.005308414724579961, + "medianPerOpMs": 0.00019694062499999744, + "rme": 0.0035390488884709517, "n": 32 }, "read/all: 1,000 rows × 4 cols": { - "medianPerOpMs": 0.0005718482142857153, - "rme": 0.0060372164192122255, + "medianPerOpMs": 0.0005801994142857178, + "rme": 0.008822914801284028, "n": 32 }, "read/all: 1,000 rows × 16 cols": { - "medianPerOpMs": 0.000751451923076904, - "rme": 0.0105613475835268, + "medianPerOpMs": 0.0007895133400000122, + "rme": 0.003647816767726226, "n": 32 }, "read/all: 20,000 rows × 1 cols": { - "medianPerOpMs": 0.0001716034708333306, - "rme": 0.004215738837659999, + "medianPerOpMs": 0.00017489565833333245, + "rme": 0.002304933813144754, "n": 32 }, "read/all: 20,000 rows × 4 cols": { - "medianPerOpMs": 0.0005628099000000248, - "rme": 0.020059304216219785, + "medianPerOpMs": 0.0005700145750000046, + "rme": 0.015064483219558755, "n": 32 }, "read/all: 20,000 rows × 16 cols": { - "medianPerOpMs": 0.0007700718750000305, - "rme": 0.008243938268762062, + "medianPerOpMs": 0.0008035374999999476, + "rme": 0.01435060591448197, "n": 32 }, "read/all: 200,000 rows × 1 cols": { - "medianPerOpMs": 0.00017026187500000106, - "rme": 0.002379613756759575, + "medianPerOpMs": 0.0001727987475000009, + "rme": 0.0026397471428332565, "n": 32 }, "read/all: 200,000 rows × 4 cols": { - "medianPerOpMs": 0.0005949469800000043, - "rme": 0.004265350670418305, + "medianPerOpMs": 0.0005963269775000027, + "rme": 0.010142994495006757, "n": 32 }, "read/all: 200,000 rows × 16 cols": { - "medianPerOpMs": 0.0008335711449999962, - "rme": 0.014906933948627825, + "medianPerOpMs": 0.0008312881249999918, + "rme": 0.012439279100731802, "n": 32 }, - "read/all: 20,000 rows × 8 cols wide text": { - "medianPerOpMs": 0.0009154385499999989, - "rme": 0.04480090444090487, - "n": 48 - }, "read/all: 20,000 rows × 8 cols mostly NULL": { - "medianPerOpMs": 0.00029764096666667683, - "rme": 0.006737003833151635, + "medianPerOpMs": 0.0003000316000000263, + "rme": 0.003993190495112072, "n": 32 }, "read/get: single row (prepared statement)": { - "medianPerOpMs": 0.00902437866972515, - "rme": 0.010076902165969603, + "medianPerOpMs": 0.009340008226691286, + "rme": 0.02094349669679764, "n": 32 }, "read/each: 20,000 rows × 4 cols": { - 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"rme": 0.006146293553256916, + "medianPerOpMs": 0.010310728999997082, + "rme": 0.006809536697360925, "n": 32 }, "overhead/db.run cached + trace listener: 1,000": { - "medianPerOpMs": 0.011008937500002503, - "rme": 0.00988306092214854, + "medianPerOpMs": 0.01108589574999496, + "rme": 0.015426876984339746, "n": 32 }, "overhead/db.run cached + profile listener: 1,000": { - "medianPerOpMs": 0.010537031249998108, - "rme": 0.01068257484759532, + "medianPerOpMs": 0.01046060425000178, + "rme": 0.007965641660189393, "n": 32 }, "overhead/db.run cached + commit listener: 1,000 autocommits": { - "medianPerOpMs": 0.011076864500002557, - "rme": 0.004982231208290771, + "medianPerOpMs": 0.011050021000002744, + "rme": 0.007898729332822617, "n": 32 }, "overhead/db.run cached + change+commit listeners: 1,000": { - "medianPerOpMs": 0.010597406250002678, - "rme": 0.012483903785426182, + "medianPerOpMs": 0.01136067725000612, + "rme": 0.02679657588234892, "n": 32 }, "overhead/db.run cached after listener removal: 1,000": { - "medianPerOpMs": 0.010324406500003533, - "rme": 0.005187326930107666, + "medianPerOpMs": 0.010350572750001447, + "rme": 0.006288903191322981, "n": 32 }, "overhead/stmt.get: 10,000 with cancellation token": { - "medianPerOpMs": 0.0066012770999994246, - "rme": 0.0038802491718915606, + "medianPerOpMs": 0.0068260083500019395, + "rme": 0.0226700087101886, "n": 32 }, "overhead/get: statement cache hit": { - "medianPerOpMs": 0.008768468750000466, - "rme": 0.012243215213791733, + "medianPerOpMs": 0.00878956250000192, + "rme": 0.018678645837412133, "n": 32 }, "overhead/get: statement cache miss": { - "medianPerOpMs": 0.02206631200000993, - "rme": 0.010615729534165364, + "medianPerOpMs": 0.022672478999986197, + "rme": 0.017508788683339317, "n": 32 }, "overhead/get: statement cache disabled": { - "medianPerOpMs": 0.020575458499995876, - "rme": 0.00834216373566615, + "medianPerOpMs": 0.02033195849999902, + "rme": 0.005787574522060754, "n": 32 }, "overhead/filter 20k: in SQL (a % 7 = 0)": { - "medianPerOpMs": 0.00004190568541665319, - "rme": 0.0026452382231677116, + "medianPerOpMs": 0.00004254674479164654, + "rme": 0.008042110546036148, "n": 32 }, "overhead/filter 20k: JS function per row": { - "medianPerOpMs": 0.018950043774999356, - "rme": 0.006045664794257667, + "medianPerOpMs": 0.019099090600000635, + "rme": 0.004400623137515085, "n": 24 }, "overhead/filter 20k: JS after all()": { - "medianPerOpMs": 0.00017809895833330907, - "rme": 0.007089974557354286, + "medianPerOpMs": 0.00018817833499997505, + "rme": 0.023877748067778287, "n": 32 }, "overhead/JS round trip: 20k minimal calls": { - "medianPerOpMs": 0.0194483541499998, - "rme": 0.009864695928484732, + "medianPerOpMs": 0.019344109399999435, + "rme": 0.006697586708236123, "n": 24 }, "overhead/JS aggregate: 20k steps": { - "medianPerOpMs": 0.019268261450000136, - "rme": 0.008298080001406893, + "medianPerOpMs": 0.01912320519999921, + "rme": 0.006471632171778836, "n": 24 }, "overhead/JS collation: sort 10k as text": { - "medianPerOpMs": 0.14568050205000038, - "rme": 0.005361032801291805, + "medianPerOpMs": 0.14468844370000006, + "rme": 0.005902092649290284, "n": 12 }, "overhead/db.transaction: 200 empty bodies": { - "medianPerOpMs": 0.017469097500009717, - "rme": 0.002599277154576361, + "medianPerOpMs": 0.017129982916655233, + "rme": 0.004562561407113668, "n": 32 }, "overhead/raw BEGIN+COMMIT: 200 pairs": { - "medianPerOpMs": 0.014750655000004501, - "rme": 0.009333205396778455, + "medianPerOpMs": 0.014806949642858983, + "rme": 0.02134543380095957, "n": 32 }, "overhead/open+close: 1,000 :memory: connections": { - "medianPerOpMs": 0.02248664285714871, - "rme": 0.004658320971064172, + "medianPerOpMs": 0.023048764534871945, + "rme": 0.00691837011360869, "n": 32 }, "concurrency/50 concurrent queries: parallelize()": { - "medianPerOpMs": 0.1790356249998149, - "rme": 0.008288197530872003, + "medianPerOpMs": 0.1792708350000612, + "rme": 0.006310284659307708, "n": 32 }, "concurrency/50 concurrent queries: serialize()": { - "medianPerOpMs": 0.19470250500002295, - "rme": 0.0031297876727596216, + "medianPerOpMs": 0.19860395999989122, + "rme": 0.002106377939999691, "n": 32 }, "concurrency/pool.read: 1,000 round trips": { - "medianPerOpMs": 0.02288679200000479, - "rme": 0.0027881801869324, + "medianPerOpMs": 0.022911020999992614, + "rme": 0.006504326018594557, "n": 32 }, "concurrency/pool.get: 1,000 round trips": { - "medianPerOpMs": 0.02276587499999732, - "rme": 0.0069698238043339735, + "medianPerOpMs": 0.02245662500000617, + "rme": 0.002709231128884739, "n": 32 }, "concurrency/pool.write: 1,000 round trips": { - "medianPerOpMs": 0.05001841649999551, - "rme": 0.004632038881002131, + "medianPerOpMs": 0.044271061999999806, + "rme": 0.021072834213669747, "n": 32 }, "concurrency/pool.all: 20,000 rows (postMessage transfer)": { - "medianPerOpMs": 0.00123274894999995, - "rme": 0.0038944339595886534, + "medianPerOpMs": 0.0012413708499996574, + "rme": 0.003072873025580276, "n": 32 }, "concurrency/200 concurrent reads: pool (4 readers)": { - "medianPerOpMs": 0.4534562525000365, - "rme": 0.010057052306273753, + "medianPerOpMs": 0.44879562500005704, + "rme": 0.011054313349695694, "n": 32 }, "concurrency/200 concurrent reads: single connection": { - "medianPerOpMs": 0.44587083500002334, - "rme": 0.0030636422990155637, + "medianPerOpMs": 0.4383939575000113, + "rme": 0.005248680919611739, "n": 32 } } diff --git a/bench/cases/sync.js b/bench/cases/sync.js index 1b0e8cb..f8c6547 100644 --- a/bench/cases/sync.js +++ b/bench/cases/sync.js @@ -165,5 +165,38 @@ export function syncCases(dbSync, dbAsync) { }, }); + // The three bind shapes against one statement, so the cost of the + // ergonomic call form is visible next to the terse one. + // + // Named binding is the shape most code actually reaches for, and it + // is the only one whose cost is not obvious from the call site: it + // enumerates the object's keys, classifies each as a name or a + // position, and resolves each name to a bind index. Left unmeasured, + // that work is free to grow. The array and positional cases are here + // as its reference points, not for their own sake. + for (const [label, bind] of [ + ['positional', (stmt, i) => stmt.runSync(i, 'x', 1.5, 'yz')], + ['array', (stmt, i) => stmt.runSync([i, 'x', 1.5, 'yz'])], + [ + 'named', + (stmt, i) => stmt.runSync({ $a: i, $b: 'x', $c: 1.5, $d: 'yz' }), + ], + ]) { + cases.push({ + name: `sync-vs-async/runSync bind shape: ${label} (4 params)`, + group: 'sync-vs-async', + iter: (_env, n) => { + const sql = + label === 'named' + ? 'INSERT INTO wt VALUES ($a, $b, $c, $d)' + : 'INSERT INTO wt VALUES (?, ?, ?, ?)'; + dbSync.runSync('DELETE FROM wt'); + const stmt = dbSync.prepareSync(sql); + for (let i = 0; i < n; i++) bind(stmt, i); + stmt.finalize(); + }, + }); + } + return cases; } diff --git a/docs/performance.md b/docs/performance.md index a83efcb..04a94c2 100644 --- a/docs/performance.md +++ b/docs/performance.md @@ -107,6 +107,16 @@ The async per-op cost (~10 µs) is dominated by the threadpool round trip, which is what the sync path avoids; it does not grow with batch size, which is why the ratio is flat. +This is a scheduling floor, not overhead that could be tuned away. A CPU +profile of a serialized `await stmt.get(...)` loop is **97.5% idle** — +the main thread waiting for the worker — with JS and native self-time +together under 2%. Every asynchronous entry point sits on the same +floor, which is why an incremental `blob.read` of 64 bytes and one of +4 KiB both cost ~6.7 µs: the transfer is free next to the hand-off. The +way to go faster asynchronously is to stop waiting one operation at a +time — see the pool and `parallelize()` numbers under Concurrency — or +to use the synchronous calls. + ### Reads (per row) | Case | median | RME | @@ -441,6 +451,44 @@ and a prepared-statement insert that is faster than theirs outright. every value shape and every failure must produce the same value and the same error text through both. +#### The three bind shapes + +The same statement, four parameters, `runSync`: + +| shape | per call | +| --- | --- | +| positional — `stmt.runSync(a, b, c, d)` | 696 ns | +| array — `stmt.runSync([a, b, c, d])` | 837 ns | +| named — `stmt.runSync({ $a: a, … })` | 1.31 µs | + +Named binding costs about 1.9× positional, and the difference is mostly +fixed per call rather than per parameter. It is not waste: the object's +keys have to be enumerated, each key classified as a name or a bind +position, and each name resolved to an index. That enumeration is also +what reports a typo'd key as `unknown named parameter "$nmae"` instead +of silently binding NULL, which is worth more than the nanoseconds in +most code. + +Use named parameters wherever clarity matters, which is nearly +everywhere. Reach for positional in a tight insert loop, where the +statement is short enough to read anyway. + +Three things that were pure overhead are gone. A key is read once into a +stack buffer, and one whose first byte cannot begin a number skips the +`ToNumber` coercion entirely — for `$a` the coercion could only ever +return `NaN`. The `Date` and `RegExp` constructors used to decide whether +an argument is a parameter map at all are looked up once per environment +rather than off the global on every call. And a plain object literal is +recognised by a single prototype comparison, since nothing with +`Object.prototype` as its prototype can be a Buffer, typed array, `Date` +or `RegExp`. + +Both bind paths share that code, so the synchronous and asynchronous +calls cannot drift apart on which keys mean what — and `test/sync.test.js` +pins the odd spellings (`{ 1: v }`, `{ ' 1': v }`, `{ '1e2': v }`, +names longer than the stack buffer, null-prototype and class instances) +against both. + ### Statement preparation `db.getSync`/`allSync`/`runSync` keep their own statement cache (64 diff --git a/src/convert.cc b/src/convert.cc index 2c9e51b..f99801c 100644 --- a/src/convert.cc +++ b/src/convert.cc @@ -69,20 +69,149 @@ void ThrowUnsupportedBindType(const Napi::Value& source, const double kInt64MinAsDouble = -9223372036854775808.0; // -(2^63) const double kInt64MaxAsDouble = 9223372036854775808.0; // 2^63 +} // namespace + +// Resolves one global constructor, caching it per environment. +// +// The uncached form read `env.Global().Get("RegExp")` on every call: a +// napi_get_global, a JS string built from the C literal, and a property +// get — to answer a question whose answer is fixed for the lifetime of +// the environment. The bind paths ask it for every named-parameter call, +// where it was one of the largest single costs. +// +// The reference holds the current environment's constructor, which is +// precisely what the uncached lookup returned; caching changes nothing +// about which objects match. +static Napi::Function GlobalCtor(Napi::Env env, napi_ref* slot, + const char* name) { + if (*slot != NULL) { + napi_value cached = NULL; + if (napi_get_reference_value(env, *slot, &cached) == napi_ok + && cached != NULL) { + return Napi::Function(env, cached); + } + } + Napi::Value ctor = env.Global().Get(name); + if (!ctor.IsFunction()) return Napi::Function(); + // A weak reference would let the constructor be collected out from + // under us; these live as long as the environment does. + napi_create_reference(env, ctor, 1, slot); + return ctor.As(); +} + +bool IsNamedParameterMap(Napi::Value source) { + if (!source.IsObject() || source.IsArray()) return false; + + auto env = source.Env(); + auto* addon = env.GetInstanceData(); + + // Fast path: a plain object literal — which is what a named-parameter + // map almost always is. Its prototype is Object.prototype, and none + // of the shapes rejected below share that prototype, so one + // comparison settles all six of them. + napi_value proto = NULL; + if (napi_get_prototype(env, source, &proto) == napi_ok && proto != NULL) { + napi_value object_proto = NULL; + if (addon->object_prototype == NULL) { + Napi::Value base = env.Global().Get("Object"); + if (base.IsFunction()) { + Napi::Value p = base.As().Get("prototype"); + if (p.IsObject()) { + napi_create_reference(env, p, 1, + &addon->object_prototype); + } + } + } + if (addon->object_prototype != NULL + && napi_get_reference_value(env, addon->object_prototype, + &object_proto) == napi_ok) { + bool same = false; + if (napi_strict_equals(env, proto, object_proto, &same) == napi_ok + && same) { + return true; + } + } + } + + // Anything else: the explicit checks. Cheap predicates first; IsDate + // matches across realms, and the RegExp lookup only runs once the + // value is known to be an object. Binary views bind positionally, + // like the other non-map shapes. + return !source.IsBuffer() && !source.IsTypedArray() + && !source.IsDataView() && !source.IsArrayBuffer() + && !source.IsDate() + && !OtherInstanceOf(source.As(), "RegExp"); +} + +bool ResolveNamedKey(Napi::Env env, Napi::Value key, NamedKey* out, + std::string* storage) { + // Long enough that no realistic parameter name reaches the fallback, + // so the whole classification is a single napi call. + char stack[128]; + size_t written = 0; + const size_t capacity = sizeof(stack); + bool have_text = false; + + if (key.IsString() + && napi_get_value_string_utf8(env, key, stack, capacity, &written) + == napi_ok + && written + 1 < capacity) { + storage->assign(stack, written); + have_text = true; + } + + if (have_text) { + const char c = storage->empty() ? '\0' : (*storage)[0]; + const bool could_be_numeric = c == '\0' + || (c >= '0' && c <= '9') + || c == '-' || c == '+' || c == '.' + || c == ' ' || c == '\t' || c == '\n' || c == '\r' + || c == '\f' || c == '\v'; + if (!could_be_numeric) { + out->positional = false; + out->name = storage->c_str(); + return true; + } + } + + // Either an unusual key, or one that really might be a number: fall + // back to the coercion, which is the definitive test. + Napi::Number num = key.ToNumber(); + if (env.IsExceptionPending()) return false; + // Bind positions are 1-based, so a key reading as zero or a negative + // number selects nothing. Such a key is treated as a name, which is + // what it literally is, and reported as an unknown one — the async + // path cannot represent a zero position either, so this is also what + // keeps the two implementations wording it the same way. + if (num.Int32Value() == num.DoubleValue() && num.Int32Value() > 0) { + out->positional = true; + out->index = num.Int32Value(); + return true; + } + if (!have_text) { + *storage = key.As().Utf8Value(); + if (env.IsExceptionPending()) return false; + } + out->positional = false; + out->name = storage->c_str(); + return true; +} + // True for a plain-object instance of the named global constructor // ("Date", "RegExp"), matching JS instanceof across realms. bool OtherInstanceOf(Napi::Object source, const char* object_type) { + auto env = source.Env(); + auto* addon = env.GetInstanceData(); + Napi::Function ctor; if (strncmp(object_type, "Date", 4) == 0) { - return source.InstanceOf(source.Env().Global().Get("Date").As()); + ctor = GlobalCtor(env, &addon->date_ctor, "Date"); } else if (strncmp(object_type, "RegExp", 6) == 0) { - return source.InstanceOf(source.Env().Global().Get("RegExp").As()); + ctor = GlobalCtor(env, &addon->regexp_ctor, "RegExp"); } - - return false; + if (ctor.IsEmpty()) return false; + return source.InstanceOf(ctor); } -} // namespace - std::unique_ptr ConvertToField(const Napi::Value source, const std::string& subject, const FieldPos& pos) { // Exhaustive dispatch. Order matters for the hot path: cheap primitive diff --git a/src/convert.h b/src/convert.h index e5bd249..e3e98a9 100644 --- a/src/convert.h +++ b/src/convert.h @@ -275,6 +275,58 @@ struct BindSubject { bool BindValueDirect(sqlite3_stmt* stmt, int pos, const Napi::Value source, const BindSubject& subject, int* rc, bool* from_undefined); +// True for a plain-object instance of the named global constructor +// ("Date", "RegExp"), matching JS instanceof. +// +// Declared here rather than re-declared per translation unit: the bind +// paths and the converter must agree on what counts as a Date or a +// RegExp, and a second declaration at another scope links against +// nothing under the addon's -undefined dynamic_lookup. +bool OtherInstanceOf(Napi::Object source, const char* object_type); + +// True when a bind argument should be read as a map of named parameters +// rather than as a single positional value. +// +// Both bind paths have to answer this identically, so they share one +// implementation instead of two hand-inverted copies of the same +// predicate chain. +bool IsNamedParameterMap(Napi::Value source); + +// One key of a named-parameter object, classified. +// +// A key that reads as an integer selects a bind position directly +// ({ 1: 'a' }); anything else is a parameter name ({ $a: 'x' }). +struct NamedKey { + bool positional = false; + int index = 0; + // NUL-terminated, owned by the `storage` passed to ResolveNamedKey. + const char* name = nullptr; +}; + +// Classifies one key from a named-parameter object, for both the sync and +// the async bind paths — they must agree on every key, so they share this. +// +// The obvious implementation coerces the key with ToNumber and compares +// Int32Value() against DoubleValue(). That is a real JS number coercion +// per parameter per call, and it was among the largest costs of a named +// bind — spent almost entirely on keys like "$a" that cannot possibly be +// numeric. +// +// So the string is read once into a stack buffer, and a key whose first +// byte cannot begin a numeric literal skips the coercion: for those, +// ToNumber is necessarily NaN, NaN != NaN, and the slow path would have +// reached the same "this is a name" verdict. Every key that *could* read +// as a number — digits, signs, a dot, leading whitespace, the empty +// string — still goes through ToNumber, so behaviour is unchanged +// including for the odd spellings ("0x10", " 1", "1.0"). +// +// `storage` is reused across the keys of one call, so a short name +// (every real one) costs no allocation at all. +// +// Returns false with a pending exception if the key cannot be read. +bool ResolveNamedKey(Napi::Env env, Napi::Value key, NamedKey* out, + std::string* storage); + } #endif diff --git a/src/database.h b/src/database.h index f724d34..de83136 100644 --- a/src/database.h +++ b/src/database.h @@ -122,6 +122,19 @@ class Database : public Napi::ObjectWrap { // Set once the generator has refused (a CSP/no-codegen realm), so // the refusal is not retried per statement. bool row_factory_unavailable = false; + // The global Date and RegExp constructors, looked up once per + // environment. The bind paths ask "is this argument a named + // parameter map, or a lone Date/RegExp value?" on every call, and + // reading them off the global each time cost a napi_get_global + // plus a property get keyed by a freshly built JS string — + // per call, to answer a question whose answer cannot change. + // These hold the *current* environment's constructors, which is + // exactly what the uncached lookup returned. + napi_ref date_ctor = NULL; + napi_ref regexp_ctor = NULL; + // Object.prototype, for recognising a plain object literal in one + // step. See IsNamedParameterMap. + napi_ref object_prototype = NULL; }; // True when this environment can no longer accept JS mutation — it diff --git a/src/statement.cc b/src/statement.cc index 3875fcb..04d8a02 100644 --- a/src/statement.cc +++ b/src/statement.cc @@ -12,9 +12,6 @@ using namespace node_sqlite3; -// Defined below Init(): cross-realm Date/RegExp instanceof for objects. -bool OtherInstanceOf(Napi::Object source, const char* object_type); - namespace { // "parameter 3" / "parameter $name" for bind error messages. @@ -133,16 +130,6 @@ Napi::Object Statement::Init(Napi::Env env, Napi::Object exports) { } // A Napi InstanceOf for Javascript Objects "Date" and "RegExp" -bool OtherInstanceOf(Napi::Object source, const char* object_type) { - if (strncmp(object_type, "Date", 4) == 0) { - return source.InstanceOf(source.Env().Global().Get("Date").As()); - } else if (strncmp(object_type, "RegExp", 6) == 0) { - return source.InstanceOf(source.Env().Global().Get("RegExp").As()); - } - - return false; -} - void Statement::Process() { if (finalized && !queue.empty()) { return CleanQueue(); @@ -465,15 +452,7 @@ bool Statement::ParseBindArguments(const Napi::CallbackInfo& info, int start, parameters->push_back(std::move(field)); } } - // Cheap checks first; IsDate matches across realms, and the RegExp - // global lookup only runs once the value is known to be an object. - // Binary views (Buffer, typed arrays, DataViews, ArrayBuffers) go - // positional like the other non-map bind shapes. - else if (!info[start].IsObject() || info[start].IsBuffer() - || info[start].IsTypedArray() || info[start].IsDataView() - || info[start].IsArrayBuffer() - || info[start].IsDate() - || OtherInstanceOf(info[start].As(), "RegExp")) { + else if (!IsNamedParameterMap(info[start])) { // Parameters directly in array. // Note: bind parameters start with 1. parameters->reserve(last - start); @@ -491,25 +470,20 @@ bool Statement::ParseBindArguments(const Napi::CallbackInfo& info, int start, if (env.IsExceptionPending()) return false; int length = array.Length(); parameters->reserve(length); + // Reused across keys; see BindArgumentsDirect. + std::string param_name; for (int i = 0; i < length; i++) { Napi::Value name = (array).Get(i); - Napi::Number num = name.ToNumber(); + NamedKey key; + if (!ResolveNamedKey(env, name, &key, ¶m_name)) return false; - if (num.Int32Value() == num.DoubleValue()) { - auto field = BindParameter((object).Get(name), num.Int32Value()); - if (field == nullptr) { - return false; - } - parameters->push_back(std::move(field)); - } - else { - std::string param_name = name.As().Utf8Value(); - auto field = BindParameter((object).Get(name), param_name.c_str()); - if (field == nullptr) { - return false; - } - parameters->push_back(std::move(field)); + auto field = key.positional + ? BindParameter((object).Get(name), key.index) + : BindParameter((object).Get(name), key.name); + if (field == nullptr) { + return false; } + parameters->push_back(std::move(field)); } } else { @@ -659,14 +633,7 @@ bool Statement::BindArgumentsDirect(const Napi::CallbackInfo& info, array = info[start].As(); count = static_cast(array.Length()); } - // Cheap checks first; IsDate matches across realms, and the RegExp - // global lookup only runs once the value is known to be an object. - // Binary views go positional like the other non-map bind shapes. - else if (start < last && info[start].IsObject() - && !info[start].IsBuffer() && !info[start].IsTypedArray() - && !info[start].IsDataView() && !info[start].IsArrayBuffer() - && !info[start].IsDate() - && !OtherInstanceOf(info[start].As(), "RegExp")) { + else if (start < last && IsNamedParameterMap(info[start])) { shape = NAMED; object = info[start].As(); keys = object.GetPropertyNames(); @@ -711,26 +678,28 @@ bool Statement::BindArgumentsDirect(const Napi::CallbackInfo& info, return false; } + // Reused across the keys of this call: a short parameter name fits in + // the string's own storage, so the loop allocates nothing. + std::string param_name; + for (int i = 0; i < count; i++) { Napi::Value value; int pos = i + 1; // Only set for a genuinely named parameter; the subject is a // borrowed view either way and formats nothing unless it throws. - std::string param_name; bool named = false; if (shape == NAMED) { Napi::Value name = keys.Get(i); if (env.IsExceptionPending()) return false; - Napi::Number num = name.ToNumber(); - if (num.Int32Value() == num.DoubleValue()) { - pos = num.Int32Value(); + NamedKey key; + if (!ResolveNamedKey(env, name, &key, ¶m_name)) return false; + if (key.positional) { + pos = key.index; } else { - param_name = name.As().Utf8Value(); named = true; - pos = sqlite3_bind_parameter_index(_handle, - param_name.c_str()); + pos = sqlite3_bind_parameter_index(_handle, key.name); if (pos == 0) { // Almost always a typo'd key. Clear the partial // bindings, like the bind-failure path below. diff --git a/test/sync.test.js b/test/sync.test.js index 0ff5d99..5446a45 100644 --- a/test/sync.test.js +++ b/test/sync.test.js @@ -1218,6 +1218,150 @@ describe('sync bind agrees with the async bind path', function () { ); }); + // Named binding classifies each key as a position or a name, and + // decides whether the argument is a parameter map at all. Both bind + // implementations share that code, and its fast paths are only valid + // where they agree with the general one — so the odd spellings are + // pinned here rather than left to the common case. + + /** + * Binds a named-parameter map through both implementations. + * @param {object} params the named parameters. + * @param {string} sql the statement to bind against. + * @returns {Promise<{sync: unknown, async: unknown}>} both readings. + */ + async function bothNamed(params, sql) { + await db.run('DELETE FROM t'); + db.runSync(sql, params); + const sync = db.getSync('SELECT v FROM t').v; + await db.run('DELETE FROM t'); + await db.run(sql, params); + const asyncRead = (await db.get('SELECT v FROM t')).v; + return { sync, async: asyncRead }; + } + + it('binds a named parameter identically on both paths', async function () { + const { sync, async: asyncValue } = await bothNamed( + { $v: 'x' }, + 'INSERT INTO t VALUES ($v)', + ); + assert.strictEqual(sync, 'x'); + assert.strictEqual(sync, asyncValue); + }); + + it('binds the :name and @name sigils too', async function () { + for (const sigil of [':', '@']) { + const { sync, async: asyncValue } = await bothNamed( + { [`${sigil}v`]: 5 }, + `INSERT INTO t VALUES (${sigil}v)`, + ); + assert.strictEqual(sync, 5); + assert.strictEqual(sync, asyncValue); + } + }); + + it('reads an integer key as a bind position', async function () { + const { sync, async: asyncValue } = await bothNamed( + { 1: 'by index' }, + 'INSERT INTO t VALUES (?)', + ); + assert.strictEqual(sync, 'by index'); + assert.strictEqual(sync, asyncValue); + }); + + // Keys that could read as a number must not take the "obviously a + // name" shortcut: each of these coerces to an integer, so it selects + // a position exactly as it always has. + for (const key of [' 1', '1.0', '+1']) { + it(`treats the key ${JSON.stringify(key)} as position 1`, async function () { + const { sync, async: asyncValue } = await bothNamed( + { [key]: 'numeric-ish' }, + 'INSERT INTO t VALUES (?)', + ); + assert.strictEqual(sync, 'numeric-ish'); + assert.strictEqual(sync, asyncValue); + }); + } + + // Likewise for the ones that coerce to an out-of-range position: + // they must still fail, and fail the same way on both paths. + for (const key of ['0x10', '', '1e2']) { + it(`fails alike for the out-of-range key ${JSON.stringify(key)}`, async function () { + const { sync, async: asyncMessage } = await bothErrors([ + { [key]: 'v' }, + ]); + assert.notStrictEqual(sync, '(no error)'); + assert.strictEqual(sync, asyncMessage); + }); + } + + // The key is read into a fixed stack buffer, with a fallback for + // anything longer. Straddle that boundary so the fallback is real. + for (const length of [120, 126, 127, 128, 200]) { + it(`binds a ${length}-byte parameter name`, async function () { + const name = `$${'a'.repeat(length - 1)}`; + const { sync, async: asyncValue } = await bothNamed( + { [name]: length }, + `INSERT INTO t VALUES (${name})`, + ); + assert.strictEqual(sync, length); + assert.strictEqual(sync, asyncValue); + }); + } + + it('reports an unknown named parameter identically', async function () { + const { sync, async: asyncMessage } = await bothErrors( + [{ $nope: 1 }], + 'INSERT INTO t VALUES ($v)', + ); + assert.match(sync, /unknown named parameter "\$nope"/); + assert.strictEqual(sync, asyncMessage); + }); + + it('accepts a null-prototype object as a parameter map', async function () { + const params = Object.create(null); + params.$v = 'no proto'; + const { sync, async: asyncValue } = await bothNamed( + params, + 'INSERT INTO t VALUES ($v)', + ); + assert.strictEqual(sync, 'no proto'); + assert.strictEqual(sync, asyncValue); + }); + + it('accepts a class instance as a parameter map', async function () { + class Params { + constructor() { + this.$v = 'from a class'; + } + } + const { sync, async: asyncValue } = await bothNamed( + new Params(), + 'INSERT INTO t VALUES ($v)', + ); + assert.strictEqual(sync, 'from a class'); + assert.strictEqual(sync, asyncValue); + }); + + it('still binds a lone Date, RegExp or Buffer positionally', async function () { + // These are objects, but they are values rather than parameter + // maps — the distinction the map check exists to draw. + const date = new Date(1700000000000); + assert.strictEqual((await bothPaths(date)).sync, 1700000000000); + + // A RegExp binds as a value (its text), not as an empty map — + // which is what it would look like if read as named parameters. + const re = await bothPaths(/x/); + assert.strictEqual(typeof re.sync, 'string'); + assert.strictEqual(re.sync, re.async); + + const buf = Buffer.from([1, 2, 3]); + assert.deepStrictEqual( + [.../** @type {Buffer} */ ((await bothPaths(buf)).sync)], + [1, 2, 3], + ); + }); + it('re-steps a parameterless statement without rebinding', async function () { const statement = db.prepare('INSERT INTO t VALUES (7)'); await db.wait(); From 50c3bc8ba0222096fb2978c1d5c71fd364807673 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Fri, 28 Aug 2026 16:29:18 +0100 Subject: [PATCH 32/33] Import the library by file URL so the no-codegen test resolves on Windows --- test/sync.test.js | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/test/sync.test.js b/test/sync.test.js index 5446a45..dc591f2 100644 --- a/test/sync.test.js +++ b/test/sync.test.js @@ -1,7 +1,6 @@ import assert from 'node:assert'; import { spawnSync } from 'node:child_process'; import { afterEach, beforeEach, describe, it } from 'node:test'; -import { pathToFileURL } from 'node:url'; import sqlite3 from '../lib/sqlite3.js'; @@ -969,9 +968,11 @@ describe('row factory: realms that forbid code generation', function () { // renderer or this flag forbids it, and the addon must degrade to // building rows column by column rather than fail. Run out of // process because the restriction is per-isolate. - const lib = pathToFileURL( - new URL('../lib/sqlite3.js', import.meta.url).pathname, - ); + // Already a file: URL — import it as one. Going via .pathname and + // back through pathToFileURL doubles the drive letter on Windows + // ("D:\D:\a\...", because "/D:/a/..." reads as a relative path) + // and drops percent-encoding on any path containing spaces. + const lib = new URL('../lib/sqlite3.js', import.meta.url).href; const script = ` import mod from '${lib}'; const sqlite3 = mod.verbose ? mod : mod.default; From 29180c5e0e39497ab611408ef4cf890962d32509 Mon Sep 17 00:00:00 2001 From: Prabhu Subramanian Date: Sat, 29 Aug 2026 10:28:00 +0100 Subject: [PATCH 33/33] Fix two dead doc links and record the cross-language row-cost result The SQLCipher section was renamed at some point but two links still pointed at #building-for-sqlcipher -- one in the README, one in docs/install.md. Both are now the real anchor. A link/anchor sweep over README, MIGRATING-TO-V9, SECURITY and docs/ finds no others, and 33 of the 35 documented JS snippets parse clean (the other two are deliberate fragments: a "{ ... }" elision and an anonymous generated function). docs/performance.md gains "Against a C-extension driver in another language". Everything there so far compares Node against Node; this adds an outside check against CPython's apsw over a real 13 GB store, which is worth recording because it isolates the mechanism rather than just a ratio. Widening the projection over one fixed plan shows count(*) at 1.02x -- parity, so execution, binding and call overhead are not the gap -- with the whole difference appearing only once rows are built: +50 ns per row, +6.5 ns per value. The per-row half is a boundary crossing, not object construction (calling the generated builder from JS costs ~7 ns/row), because CPython lets an extension fill a tuple in C while Node-API has no bulk constructor. Two consequences for callers: projecting fewer columns is the lever that works, and row mode is not one -- rowMode: 'array' moves nothing, which the existing "How rows are built" section already predicted. That measurement did not come from pnpm run bench, so the file's opening claim that nothing is hand-timed is now qualified, and the caveats (warm-cache-only, a 3.53.3-vs-3.53.4 SQLite mismatch, private dataset, one machine) are listed under Limits of these numbers. --- README.md | 2 +- docs/install.md | 2 +- docs/performance.md | 74 ++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 75 insertions(+), 3 deletions(-) diff --git a/README.md b/README.md index 966de18..22610ef 100644 --- a/README.md +++ b/README.md @@ -64,7 +64,7 @@ requirements and the pnpm specifics for source builds. It is also possible to make your own build of `sqlite3` from its source instead of its npm package ([See below.](#source-install)). -SQLite's [SQLCipher extension](https://github.com/sqlcipher/sqlcipher) is also supported. [(See below.)](#building-for-sqlcipher) +SQLite's [SQLCipher extension](https://github.com/sqlcipher/sqlcipher) is also supported. [(See below.)](#sqlcipher-encrypted-databases) ## Electron diff --git a/docs/install.md b/docs/install.md index 7cb8c47..1c38dd1 100644 --- a/docs/install.md +++ b/docs/install.md @@ -124,7 +124,7 @@ npm install @appthreat/sqlite3 --build-from-source --sqlite_libname=sqlcipher -- ``` For the full SQLCipher/Electron flag set see the -[README](../README.md#building-for-sqlcipher). +[README](../README.md#sqlcipher-encrypted-databases). ## Troubleshooting: "No native build was found" diff --git a/docs/performance.md b/docs/performance.md index 04a94c2..c54c0ac 100644 --- a/docs/performance.md +++ b/docs/performance.md @@ -3,7 +3,11 @@ This document explains what the benchmark suite measures, how to reproduce every figure in it, and — just as important — where this package is slower than the alternatives. Every number below was produced -by `pnpm run bench`; nothing is hand-timed. +by `pnpm run bench`; nothing is hand-timed. The single exception is +[Against a C-extension driver](#against-a-c-extension-driver-in-another-language), +which comes from an external project measuring this package against +CPython's apsw over a private dataset; it is labelled as such there and +in [Limits of these numbers](#limits-of-these-numbers). - [Method](#method) - [The noise floor](#the-noise-floor) @@ -12,6 +16,7 @@ by `pnpm run bench`; nothing is hand-timed. - [Linux (arm64, Debian container)](#linux-arm64-debian-container) - [When to use which API](#when-to-use-which-api) - [Where this package loses](#where-this-package-loses) + - [Against a C-extension driver](#against-a-c-extension-driver-in-another-language) - [How rows are built](#how-rows-are-built) - [How parameters are bound](#how-parameters-are-bound) - [Statement preparation](#statement-preparation) @@ -357,6 +362,64 @@ non-blocking surface (the event loop stays free), the worker pool, transactions-with-savepoints, hooks, sessions/blob I/O and per-connection configuration — none of which `node:sqlite` has. +### Against a C-extension driver in another language + +The comparison above is Node-against-Node. A second, independent +measurement ran this package against **apsw** — the thin CPython C +wrapper around SQLite — over a real 13 GB store (6.9 M rows), warm +cache, same SQL text, same parameters, same pragmas, same query plans, +with row-for-row output agreement verified before any timing. It is a +useful outside check because apsw is a very direct binding: it is close +to the floor of what a C extension can do. + +Widening the projection over one fixed query plan separates the costs +(apsw builds SQLite 3.53.3, this package 3.53.4 — a patch-level +confound that is small but not zero): + +| projection | `@appthreat/sqlite3` | apsw | ratio | +|---|---|---|---| +| `count(*)` (no rows built) | 1.91 ms | 1.86 ms | **1.02×** | +| 1 column | 9.67 ms | 7.14 ms | 1.35× | +| 6 columns | 23.73 ms | 19.78 ms | 1.20× | + +The `count(*)` rung walks the identical index and returns one row per +call. At **1.02× it is parity**, which rules out query execution, +parameter binding and per-call overhead in a single measurement — the +entire difference appears only when rows are materialised. Splitting the +ladder's slope from its intercept gives **+50 ns per row** fixed and +**+6.5 ns per value** (V8 string creation against CPython's +`PyUnicode_FromStringAndSize`). Per-value is near parity; the per-row +cost is the gap. + +That cost is structural rather than a missed optimisation. CPython's C +API lets an extension build the result object *in C*: `PyTuple_New` +followed by `PyTuple_SET_ITEM` per column, which is a pointer write into +the tuple's inline slots with no call into Python at any point. Node-API +offers no equivalent bulk constructor, which is why rows here are built +by a generated JS function (next section) — one `napi_call_function` +per row instead of N property stores. That trade is a large win against +the store loop, but it is still a C++→JS boundary crossing per row, and +a CPython extension crosses no boundary at all. Calling the same +generated builder from JS with six arguments costs ~7 ns/row, so almost +all of the per-row cost is the crossing, not the object. + +Two consequences for calling code: + +- **Projecting fewer columns is the lever that works.** The cost scales + with values materialised, so `SELECT` lists that name the columns + actually used are worth more here than in a CPython driver. Aggregates + and existence checks are already at parity. +- **Row mode is not a lever.** Re-running the same queries with + `{ rowMode: 'array' }` — the shape apsw returns — moves nothing + (−1.0%, +1.6%, +2.4% across three row-heavy queries, straddling zero), + because both shapes go through the same generated builder. + +Against a *different language's* driver the async API is a separate +matter: over eight concurrent connections this package recovered 2.1×, +while Python threads running the same work went ~5× slower on the GIL. +Row marshalling is where a C extension is ahead; concurrency is where it +is not. + ### How rows are built A row is not assembled column by column from C++. Storing each column @@ -689,3 +752,12 @@ distinguishes a real regression from run-to-run variance. a loaded machine reports its own, higher floor — and its ratios are suppressed accordingly. That is the harness refusing to over-claim, not a malfunction. +- The apsw comparison in + [Against a C-extension driver](#against-a-c-extension-driver-in-another-language) does + **not** come from `pnpm run bench`. It was measured by a separate + project against a private 13 GB dataset, so it is not reproducible + from this repository, and it carries its own caveats: warm page cache + only, a 3.53.3-vs-3.53.4 SQLite mismatch, and a single machine. It is + quoted here for the mechanism it establishes — per-row cost is a + boundary crossing, per-value cost is near parity — which the column + ladder pins down independently of the absolute times.