__host__ __device__
cudaError_t triple_chevrons(void* kernel, ::dim3 grid_dim, ::dim3 block_dim, int shared_memory_size, cudaStream_t stream, const Args&... args)
{
// reference the kernel to encourage the compiler not to optimize it away
workaround_unused_variable_warning(kernel);
#if __cuda_lib_has_cudart
# ifndef __CUDA_ARCH__
cudaConfigureCall(grid_dim, block_dim, shared_memory_size, stream);
setup_kernel_arguments(0, args...);
return cudaLaunch(kernel);
# else
// XXX generalize to multiple arguments
if(sizeof...(Args) != 1)
{
return cudaErrorNotSupported;
}
using Arg = typename first_type<Args...>::type;
void *param_buffer = cudaGetParameterBuffer(std::alignment_of<Arg>::value, sizeof(Arg));
std::memcpy(param_buffer, &first_parameter(args...), sizeof(Arg));
return cudaLaunchDevice(kernel, param_buffer, grid_dim, block_dim, shared_memory_size, stream);
# endif // __CUDA_ARCH__
#else // __cuda_lib_has_cudart
return cudaErrorNotSupported;
#endif
}
__host__ __device__
static void supported_path(unsigned int num_blocks, unsigned int block_size, size_t num_dynamic_smem_bytes, cudaStream_t stream, task_type task)
{
#if __BULK_HAS_CUDART__
# ifndef __CUDA_ARCH__
cudaConfigureCall(dim3(num_blocks), dim3(block_size), num_dynamic_smem_bytes, stream);
cudaSetupArgument(task, 0);
bulk::detail::throw_on_error(cudaLaunch(super_t::global_function_pointer()), "after cudaLaunch in triple_chevron_launcher::launch()");
# else
void *param_buffer = cudaGetParameterBuffer(alignment_of<task_type>::value, sizeof(task_type));
std::memcpy(param_buffer, &task, sizeof(task_type));
bulk::detail::throw_on_error(cudaLaunchDevice(reinterpret_cast<void*>(super_t::global_function_pointer()), param_buffer, dim3(num_blocks), dim3(block_size), num_dynamic_smem_bytes, stream),
"after cudaLaunchDevice in triple_chevron_launcher::launch()");
# endif // __CUDA_ARCH__
#endif // __BULK_HAS_CUDART__
}