53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
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//===----------------------------------------------------------------------===//
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//
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// Part of libcu++, the C++ Standard Library for your entire system,
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// under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _CONCURRENT_AGENTS_H
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#define _CONCURRENT_AGENTS_H
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#ifndef __CUDA_ARCH__
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# include <thread>
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#endif
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#include <cuda/std/cassert>
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#include "test_macros.h"
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_CCCL_EXEC_CHECK_DISABLE
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template <class Fun>
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TEST_FUNC void execute_on_main_thread(Fun&& fun)
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{
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NV_IF_ELSE_TARGET(NV_IS_DEVICE, (if (threadIdx.x == 0) { fun(); } __syncthreads();), (fun();))
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}
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template <typename... Fs>
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TEST_FUNC void concurrent_agents_launch(Fs... fs)
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{
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NV_IF_ELSE_TARGET(
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NV_IS_DEVICE,
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(assert(blockDim.x == sizeof...(Fs)); using fptr = void (*)(void*);
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fptr device_threads[] = {[](void* data) {
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(*reinterpret_cast<Fs*>(data))();
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}...};
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void* device_thread_data[] = {reinterpret_cast<void*>(&fs)...};
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__syncthreads();
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device_threads[threadIdx.x](device_thread_data[threadIdx.x]);
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__syncthreads();),
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(std::thread threads[]{std::thread{std::forward<Fs>(fs)}...};
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for (auto&& thread : threads) { thread.join(); }))
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}
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#endif // _CONCURRENT_AGENTS_H
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