quantrs2_core/platform/

detector.rs

//! Platform detection implementation

use super::capabilities::*;
use std::env;

/// Detect comprehensive platform capabilities
pub fn detect_platform_capabilities() -> PlatformCapabilities {
    // Try to use SciRS2's platform detection if available
    // TODO: Use SciRS2's platform detection when available

    // Fallback to our own detection
    PlatformCapabilities {
        cpu: detect_cpu_capabilities(),
        gpu: detect_gpu_capabilities(),
        memory: detect_memory_capabilities(),
        platform_type: detect_platform_type(),
        os: detect_operating_system(),
        architecture: detect_architecture(),
    }
}

/// Detect CPU capabilities
fn detect_cpu_capabilities() -> CpuCapabilities {
    let logical_cores = num_cpus::get();
    let physical_cores = num_cpus::get_physical();

    CpuCapabilities {
        physical_cores,
        logical_cores,
        simd: detect_simd_capabilities(),
        cache: detect_cache_info(),
        base_clock_mhz: None, // TODO: Implement CPU clock detection
        vendor: detect_cpu_vendor(),
        model_name: detect_cpu_model(),
    }
}

/// Detect SIMD capabilities
fn detect_simd_capabilities() -> SimdCapabilities {
    // Try to use SciRS2's SIMD detection if available
    // TODO: Use SciRS2's SIMD capability detection when available

    #[cfg(target_arch = "x86_64")]
    {
        SimdCapabilities {
            sse: is_x86_feature_detected!("sse"),
            sse2: is_x86_feature_detected!("sse2"),
            sse3: is_x86_feature_detected!("sse3"),
            ssse3: is_x86_feature_detected!("ssse3"),
            sse4_1: is_x86_feature_detected!("sse4.1"),
            sse4_2: is_x86_feature_detected!("sse4.2"),
            avx: is_x86_feature_detected!("avx"),
            avx2: is_x86_feature_detected!("avx2"),
            avx512: cfg!(target_feature = "avx512f"),
            fma: is_x86_feature_detected!("fma"),
            neon: false,
            sve: false,
        }
    }

    #[cfg(target_arch = "aarch64")]
    {
        SimdCapabilities {
            sse: false,
            sse2: false,
            sse3: false,
            ssse3: false,
            sse4_1: false,
            sse4_2: false,
            avx: false,
            avx2: false,
            avx512: false,
            fma: false,
            neon: cfg!(target_feature = "neon"),
            sve: cfg!(target_feature = "sve"),
        }
    }

    #[cfg(not(any(target_arch = "x86_64", target_arch = "aarch64")))]
    {
        SimdCapabilities {
            sse: false,
            sse2: false,
            sse3: false,
            ssse3: false,
            sse4_1: false,
            sse4_2: false,
            avx: false,
            avx2: false,
            avx512: false,
            fma: false,
            neon: false,
            sve: false,
        }
    }
}

/// Detect cache information
fn detect_cache_info() -> CacheInfo {
    // Basic implementation - can be enhanced with platform-specific detection
    CacheInfo {
        l1_data: Some(32 * 1024),        // 32KB default
        l1_instruction: Some(32 * 1024), // 32KB default
        l2: Some(256 * 1024),            // 256KB default
        l3: Some(8 * 1024 * 1024),       // 8MB default
        line_size: Some(64),             // 64 byte cache line default
    }
}

/// Detect CPU vendor
fn detect_cpu_vendor() -> String {
    #[cfg(target_arch = "x86_64")]
    {
        // TODO: Use CPUID to get actual vendor
        "Unknown".to_string()
    }
    #[cfg(target_arch = "aarch64")]
    {
        "ARM".to_string()
    }
    #[cfg(not(any(target_arch = "x86_64", target_arch = "aarch64")))]
    {
        "Unknown".to_string()
    }
}

/// Detect CPU model
fn detect_cpu_model() -> String {
    // TODO: Implement actual CPU model detection
    "Unknown".to_string()
}

/// Detect GPU capabilities
fn detect_gpu_capabilities() -> GpuCapabilities {
    // Check for GPU availability
    let devices = Vec::new();

    // Try to detect WebGPU devices (cross-platform)
    // Note: This is a placeholder - actual implementation would use wgpu

    GpuCapabilities {
        available: false,
        devices,
        primary_device: None,
    }
}

/// Detect memory capabilities
fn detect_memory_capabilities() -> MemoryCapabilities {
    use sysinfo::System;

    let mut sys = System::new_all();
    sys.refresh_memory();

    MemoryCapabilities {
        total_memory: sys.total_memory() as usize,
        available_memory: sys.available_memory() as usize,
        bandwidth_gbps: None, // TODO: Implement bandwidth detection
        numa_nodes: 1,        // TODO: Implement NUMA detection
        hugepage_support: detect_hugepage_support(),
    }
}

/// Detect hugepage support
fn detect_hugepage_support() -> bool {
    #[cfg(target_os = "linux")]
    {
        std::path::Path::new("/sys/kernel/mm/hugepages").exists()
    }
    #[cfg(not(target_os = "linux"))]
    {
        false
    }
}

/// Detect platform type
fn detect_platform_type() -> PlatformType {
    // Basic heuristic based on environment
    if env::var("KUBERNETES_SERVICE_HOST").is_ok() || env::var("ECS_CONTAINER_METADATA_URI").is_ok()
    {
        PlatformType::Cloud
    } else if cfg!(target_os = "android") {
        PlatformType::Mobile
    } else {
        // TODO: Better detection logic
        PlatformType::Desktop
    }
}

/// Detect operating system
fn detect_operating_system() -> OperatingSystem {
    #[cfg(target_os = "linux")]
    {
        OperatingSystem::Linux
    }
    #[cfg(target_os = "windows")]
    {
        OperatingSystem::Windows
    }
    #[cfg(target_os = "macos")]
    {
        OperatingSystem::MacOS
    }
    #[cfg(target_os = "freebsd")]
    {
        OperatingSystem::FreeBSD
    }
    #[cfg(target_os = "android")]
    {
        OperatingSystem::Android
    }
    #[cfg(not(any(
        target_os = "linux",
        target_os = "windows",
        target_os = "macos",
        target_os = "freebsd",
        target_os = "android"
    )))]
    {
        OperatingSystem::Unknown
    }
}

/// Detect architecture
fn detect_architecture() -> Architecture {
    #[cfg(target_arch = "x86_64")]
    {
        Architecture::X86_64
    }
    #[cfg(target_arch = "aarch64")]
    {
        Architecture::Aarch64
    }
    #[cfg(target_arch = "riscv64")]
    {
        Architecture::Riscv64
    }
    #[cfg(target_arch = "wasm32")]
    {
        Architecture::Wasm32
    }
    #[cfg(not(any(
        target_arch = "x86_64",
        target_arch = "aarch64",
        target_arch = "riscv64",
        target_arch = "wasm32"
    )))]
    {
        Architecture::Unknown
    }
}