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/*
* Copyright 2008-2013 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <thrust/detail/config.h>
#include <thrust/detail/preprocessor.h>
// TODO: Enable this or remove this file once nvGRAPH/CUSP migrates off of it.
//#if THRUST_HOST_COMPILER == THRUST_HOST_COMPILER_MSVC
// #pragma message("warning: The functionality in this header is unsafe, deprecated, and will soon be removed. Use C++11 or C11 atomics instead.")
//#else
// #warning The functionality in this header is unsafe, deprecated, and will soon be removed. Use C++11 or C11 atomics instead.
//#endif
// msvc case
#if THRUST_HOST_COMPILER == THRUST_HOST_COMPILER_MSVC
#ifndef _DEBUG
#include <intrin.h>
#pragma intrinsic(_ReadWriteBarrier)
#define __thrust_compiler_fence() _ReadWriteBarrier()
#else
#define __thrust_compiler_fence() do {} while (0)
#endif // _DEBUG
// gcc case
#elif THRUST_HOST_COMPILER == THRUST_HOST_COMPILER_GCC
#if THRUST_GCC_VERSION >= 40200 // atomic built-ins were introduced ~4.2
#define __thrust_compiler_fence() __sync_synchronize()
#else
// allow the code to compile without any guarantees
#define __thrust_compiler_fence() do {} while (0)
#endif // THRUST_GCC_VERSION
// unknown case
#elif THRUST_HOST_COMPILER == THRUST_HOST_COMPILER_CLANG
#define __thrust_compiler_fence() __sync_synchronize()
#elif THRUST_HOST_COMPILER == THRUST_HOST_COMPILER_UNKNOWN
// allow the code to compile without any guarantees
#define __thrust_compiler_fence() do {} while (0)
#endif
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