check_randomx_flags.rs

// Check what RandomX flags we're getting
use std::os::raw::c_int;

#[link(name = "randomx", kind = "dylib")]
extern "C" {
    fn randomx_get_flags() -> c_int;
}

const RANDOMX_FLAG_DEFAULT: c_int = 0;
const RANDOMX_FLAG_LARGE_PAGES: c_int = 1;
const RANDOMX_FLAG_HARD_AES: c_int = 2;
const RANDOMX_FLAG_FULL_MEM: c_int = 4;
const RANDOMX_FLAG_JIT: c_int = 8;
const RANDOMX_FLAG_SECURE: c_int = 16;
const RANDOMX_FLAG_ARGON2_SSSE3: c_int = 32;
const RANDOMX_FLAG_ARGON2_AVX2: c_int = 64;
const RANDOMX_FLAG_ARGON2: c_int = 96;

fn main() {
    let flags = unsafe { randomx_get_flags() };
    
    println!("RandomX Recommended Flags: {}", flags);
    println!();
    println!("Flag breakdown:");
    
    if flags & RANDOMX_FLAG_LARGE_PAGES != 0 {
        println!("  ✓ LARGE_PAGES (1) - Huge pages support");
    }
    if flags & RANDOMX_FLAG_HARD_AES != 0 {
        println!("  ✓ HARD_AES (2) - Hardware AES-NI");
    }
    if flags & RANDOMX_FLAG_FULL_MEM != 0 {
        println!("  ✓ FULL_MEM (4) - 2GB dataset mode");
    }
    if flags & RANDOMX_FLAG_JIT != 0 {
        println!("  ✓ JIT (8) - Just-In-Time compilation");
    }
    if flags & RANDOMX_FLAG_SECURE != 0 {
        println!("  ✓ SECURE (16) - W^X policy");
    }
    if flags & RANDOMX_FLAG_ARGON2_SSSE3 != 0 {
        println!("  ✓ ARGON2_SSSE3 (32)");
    }
    if flags & RANDOMX_FLAG_ARGON2_AVX2 != 0 {
        println!("  ✓ ARGON2_AVX2 (64)");
    }
    
    println!();
    println!("What we're using:");
    let our_flags = flags | RANDOMX_FLAG_FULL_MEM;
    let our_flags = our_flags & !RANDOMX_FLAG_LARGE_PAGES;
    println!("  Flags value: {}", our_flags);
    
    if our_flags & RANDOMX_FLAG_JIT != 0 {
        println!("  ✓ JIT enabled");
    } else {
        println!("  ✗ JIT DISABLED - This would kill performance!");
    }
    
    if our_flags & RANDOMX_FLAG_HARD_AES != 0 {
        println!("  ✓ Hardware AES enabled");
    } else {
        println!("  ✗ Hardware AES DISABLED - This would kill performance!");
    }
    
    if our_flags & RANDOMX_FLAG_FULL_MEM != 0 {
        println!("  ✓ Full dataset mode");
    } else {
        println!("  ✗ Cache-only mode (1000× slower)");
    }
}