hodu_cuda_kernels 0.2.4

hodu cuda kernels
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use crate::compat::*;

// Re-export cudarc types
pub use cudarc::driver::{
    CudaContext, CudaFunction, CudaModule, CudaSlice, CudaStream, DeviceRepr, LaunchConfig, PushKernelArg,
};
pub use cudarc::nvrtc::Ptx;

// Extension trait for launching kernels with backwards compatibility
pub trait CudaFunctionExt {
    /// Launch a CUDA kernel function.
    ///
    /// # Safety
    ///
    /// The caller must ensure that:
    /// - The kernel function is valid and compiled correctly
    /// - All kernel arguments passed via `args` match the kernel's expected signature
    /// - The launch configuration is appropriate for the device
    /// - All pointers passed to the kernel are valid and properly aligned
    unsafe fn launch<'a, Args>(
        &'a self,
        stream: &'a Arc<CudaStream>,
        cfg: LaunchConfig,
        args: Args,
    ) -> Result<(), cudarc::driver::DriverError>
    where
        Args: FnOnce(&mut cudarc::driver::LaunchArgs<'a>);
}

impl CudaFunctionExt for CudaFunction {
    unsafe fn launch<'a, Args>(
        &'a self,
        stream: &'a Arc<CudaStream>,
        cfg: LaunchConfig,
        args: Args,
    ) -> Result<(), cudarc::driver::DriverError>
    where
        Args: FnOnce(&mut cudarc::driver::LaunchArgs<'a>),
    {
        let mut launch_args = stream.launch_builder(self);
        args(&mut launch_args);
        launch_args.launch(cfg).map(|_| ())
    }
}