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//===----------------------------------------------------------------------===//
//
// Part of libcu++, the C++ Standard Library for your entire system,
// under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
#ifndef __LIBCUDACXX___ATOMIC_PLATFORM_H
#define __LIBCUDACXX___ATOMIC_PLATFORM_H
#include <cuda/std/detail/__config>
#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
# pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
# pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
# pragma system_header
#endif // no system header
#if _CCCL_COMPILER(MSVC)
# include <cuda/std/__atomic/platform/msvc_to_builtins.h>
#endif
#if defined(__CLANG_ATOMIC_BOOL_LOCK_FREE)
# define LIBCUDACXX_ATOMIC_BOOL_LOCK_FREE __CLANG_ATOMIC_BOOL_LOCK_FREE
# define LIBCUDACXX_ATOMIC_CHAR_LOCK_FREE __CLANG_ATOMIC_CHAR_LOCK_FREE
# define LIBCUDACXX_ATOMIC_CHAR16_T_LOCK_FREE __CLANG_ATOMIC_CHAR16_T_LOCK_FREE
# define LIBCUDACXX_ATOMIC_CHAR32_T_LOCK_FREE __CLANG_ATOMIC_CHAR32_T_LOCK_FREE
# define LIBCUDACXX_ATOMIC_WCHAR_T_LOCK_FREE __CLANG_ATOMIC_WCHAR_T_LOCK_FREE
# define LIBCUDACXX_ATOMIC_SHORT_LOCK_FREE __CLANG_ATOMIC_SHORT_LOCK_FREE
# define LIBCUDACXX_ATOMIC_INT_LOCK_FREE __CLANG_ATOMIC_INT_LOCK_FREE
# define LIBCUDACXX_ATOMIC_LONG_LOCK_FREE __CLANG_ATOMIC_LONG_LOCK_FREE
# define LIBCUDACXX_ATOMIC_LLONG_LOCK_FREE __CLANG_ATOMIC_LLONG_LOCK_FREE
# define LIBCUDACXX_ATOMIC_POINTER_LOCK_FREE __CLANG_ATOMIC_POINTER_LOCK_FREE
#elif defined(__GCC_ATOMIC_BOOL_LOCK_FREE)
# define LIBCUDACXX_ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE
# define LIBCUDACXX_ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE
# define LIBCUDACXX_ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE
# define LIBCUDACXX_ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE
# define LIBCUDACXX_ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE
# define LIBCUDACXX_ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE
# define LIBCUDACXX_ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE
# define LIBCUDACXX_ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE
# define LIBCUDACXX_ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE
# define LIBCUDACXX_ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE
#else // !defined(__CLANG_ATOMIC_BOOL_LOCK_FREE) && !defined(__GCC_ATOMIC_BOOL_LOCK_FREE)
# define LIBCUDACXX_ATOMIC_BOOL_LOCK_FREE 2
# define LIBCUDACXX_ATOMIC_CHAR_LOCK_FREE 2
# define LIBCUDACXX_ATOMIC_CHAR16_T_LOCK_FREE 2
# define LIBCUDACXX_ATOMIC_CHAR32_T_LOCK_FREE 2
# define LIBCUDACXX_ATOMIC_WCHAR_T_LOCK_FREE 2
# define LIBCUDACXX_ATOMIC_SHORT_LOCK_FREE 2
# define LIBCUDACXX_ATOMIC_INT_LOCK_FREE 2
# define LIBCUDACXX_ATOMIC_LONG_LOCK_FREE 2
# define LIBCUDACXX_ATOMIC_LLONG_LOCK_FREE 2
# define LIBCUDACXX_ATOMIC_POINTER_LOCK_FREE 2
#endif
#define _LIBCUDACXX_ATOMIC_IS_LOCK_FREE(size) (size <= 8)
#include <cuda/std/__cccl/prologue.h>
_LIBCUDACXX_BEGIN_NAMESPACE_STD
#if defined(_LIBCUDACXX_ATOMIC_ALWAYS_LOCK_FREE)
template <typename _Tp>
struct __atomic_is_always_lock_free
{
enum
{
__value = _LIBCUDACXX_ATOMIC_ALWAYS_LOCK_FREE(sizeof(_Tp), 0)
};
};
#else
template <typename _Tp>
struct __atomic_is_always_lock_free
{
enum
{
__value = sizeof(_Tp) <= 8
};
};
#endif // defined(_LIBCUDACXX_ATOMIC_ALWAYS_LOCK_FREE)
_LIBCUDACXX_END_NAMESPACE_STD
#include <cuda/std/__cccl/epilogue.h>
#endif // __LIBCUDACXX___ATOMIC_PLATFORM_H
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