56fd68e7dd
CCCL (CUDA C++ Core Libraries) provides: - CUB: device/block/warp-level GPU primitives (reduce, scan, sort, topk) - Thrust: high-level parallel algorithms (transform_reduce, sort, scan) - libcudacxx: CUDA C++ standard library (atomics, barriers, memory) - cudax: experimental features (memory resources, allocators) - Tuning policies: per-SM hardware-specific algorithm parameters Competition optimization vectors mapped to CCCL: - Output TPS (83% weight): warp_reduce, block_reduce, device_topk - Input TPS (14% weight): device_scan, block_load, prefetch - Cache TPS (3% weight): prefix caching strategy patterns - Memory (0.9 util): pooled/cached/buddy allocators Source: https://github.com/NVIDIA/cccl (shallow clone, HEAD only) License: Apache-2.0
67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
//===----------------------------------------------------------------------===//
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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) 2024 NVIDIA CORPORATION & AFFILIATES.
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//
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//===----------------------------------------------------------------------===//
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#ifndef _CUDA___BARRIER_BARRIER_H
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#define _CUDA___BARRIER_BARRIER_H
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#include <cuda/std/detail/__config>
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#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
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# pragma GCC system_header
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#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
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# pragma clang system_header
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#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
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# pragma system_header
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#endif // no system header
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#include <cuda/__fwd/barrier.h>
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#include <cuda/std/__atomic/scopes.h>
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#include <cuda/std/__barrier/barrier.h>
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#include <cuda/std/__barrier/empty_completion.h>
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#include <cuda/std/__new/device_new.h>
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#include <cuda/std/cstdint>
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#include <cuda/std/__cccl/prologue.h>
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_CCCL_BEGIN_NAMESPACE_CUDA
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template <thread_scope _Sco, class _CompletionF>
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class barrier : public ::cuda::std::__barrier_base<_CompletionF, _Sco>
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{
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public:
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_CCCL_HIDE_FROM_ABI barrier() = default;
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barrier(const barrier&) = delete;
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barrier& operator=(const barrier&) = delete;
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_CCCL_HOST_DEVICE_API constexpr barrier(::cuda::std::ptrdiff_t __expected, _CompletionF __completion = _CompletionF())
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: ::cuda::std::__barrier_base<_CompletionF, _Sco>(__expected, __completion)
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{}
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_CCCL_HOST_DEVICE_API inline friend void init(barrier* __b, ::cuda::std::ptrdiff_t __expected)
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{
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_CCCL_ASSERT(__expected >= 0, "Cannot initialize barrier with negative arrival count");
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new (__b) barrier(__expected);
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}
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_CCCL_HOST_DEVICE_API inline friend void
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init(barrier* __b, ::cuda::std::ptrdiff_t __expected, _CompletionF __completion)
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{
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_CCCL_ASSERT(__expected >= 0, "Cannot initialize barrier with negative arrival count");
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new (__b) barrier(__expected, __completion);
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}
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};
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_CCCL_END_NAMESPACE_CUDA
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#include <cuda/std/__cccl/epilogue.h>
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#endif // _CUDA___BARRIER_BARRIER_H
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