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1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___ATOMIC_ALIASES_H10#define _LIBCPP___ATOMIC_ALIASES_H11 12#include <__atomic/atomic.h>13#include <__atomic/atomic_lock_free.h>14#include <__atomic/contention_t.h>15#include <__atomic/is_always_lock_free.h>16#include <__config>17#include <__cstddef/ptrdiff_t.h>18#include <__cstddef/size_t.h>19#include <__type_traits/conditional.h>20#include <__type_traits/make_unsigned.h>21#include <cstdint>22 23#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)24# pragma GCC system_header25#endif26 27_LIBCPP_BEGIN_NAMESPACE_STD28 29using atomic_bool = atomic<bool>;30using atomic_char = atomic<char>;31using atomic_schar = atomic<signed char>;32using atomic_uchar = atomic<unsigned char>;33using atomic_short = atomic<short>;34using atomic_ushort = atomic<unsigned short>;35using atomic_int = atomic<int>;36using atomic_uint = atomic<unsigned int>;37using atomic_long = atomic<long>;38using atomic_ulong = atomic<unsigned long>;39using atomic_llong = atomic<long long>;40using atomic_ullong = atomic<unsigned long long>;41#if _LIBCPP_HAS_CHAR8_T42using atomic_char8_t = atomic<char8_t>;43#endif44using atomic_char16_t = atomic<char16_t>;45using atomic_char32_t = atomic<char32_t>;46#if _LIBCPP_HAS_WIDE_CHARACTERS47using atomic_wchar_t = atomic<wchar_t>;48#endif49 50using atomic_int_least8_t = atomic<int_least8_t>;51using atomic_uint_least8_t = atomic<uint_least8_t>;52using atomic_int_least16_t = atomic<int_least16_t>;53using atomic_uint_least16_t = atomic<uint_least16_t>;54using atomic_int_least32_t = atomic<int_least32_t>;55using atomic_uint_least32_t = atomic<uint_least32_t>;56using atomic_int_least64_t = atomic<int_least64_t>;57using atomic_uint_least64_t = atomic<uint_least64_t>;58 59using atomic_int_fast8_t = atomic<int_fast8_t>;60using atomic_uint_fast8_t = atomic<uint_fast8_t>;61using atomic_int_fast16_t = atomic<int_fast16_t>;62using atomic_uint_fast16_t = atomic<uint_fast16_t>;63using atomic_int_fast32_t = atomic<int_fast32_t>;64using atomic_uint_fast32_t = atomic<uint_fast32_t>;65using atomic_int_fast64_t = atomic<int_fast64_t>;66using atomic_uint_fast64_t = atomic<uint_fast64_t>;67 68using atomic_int8_t = atomic< int8_t>;69using atomic_uint8_t = atomic<uint8_t>;70using atomic_int16_t = atomic< int16_t>;71using atomic_uint16_t = atomic<uint16_t>;72using atomic_int32_t = atomic< int32_t>;73using atomic_uint32_t = atomic<uint32_t>;74using atomic_int64_t = atomic< int64_t>;75using atomic_uint64_t = atomic<uint64_t>;76 77using atomic_intptr_t = atomic<intptr_t>;78using atomic_uintptr_t = atomic<uintptr_t>;79using atomic_size_t = atomic<size_t>;80using atomic_ptrdiff_t = atomic<ptrdiff_t>;81using atomic_intmax_t = atomic<intmax_t>;82using atomic_uintmax_t = atomic<uintmax_t>;83 84// C++20 atomic_{signed,unsigned}_lock_free: prefer the contention type most highly, then the largest lock-free type85#if _LIBCPP_STD_VER >= 2086# if ATOMIC_LLONG_LOCK_FREE == 287using __largest_lock_free_type _LIBCPP_NODEBUG = long long;88# elif ATOMIC_INT_LOCK_FREE == 289using __largest_lock_free_type _LIBCPP_NODEBUG = int;90# elif ATOMIC_SHORT_LOCK_FREE == 291using __largest_lock_free_type _LIBCPP_NODEBUG = short;92# elif ATOMIC_CHAR_LOCK_FREE == 293using __largest_lock_free_type _LIBCPP_NODEBUG = char;94# else95# define _LIBCPP_NO_LOCK_FREE_TYPES // There are no lockfree types (this can happen on unusual platforms)96# endif97 98# ifndef _LIBCPP_NO_LOCK_FREE_TYPES99using __contention_t_or_largest _LIBCPP_NODEBUG =100 __conditional_t<__libcpp_is_always_lock_free<__cxx_contention_t>::__value,101 __cxx_contention_t,102 __largest_lock_free_type>;103 104using atomic_signed_lock_free = atomic<__contention_t_or_largest>;105using atomic_unsigned_lock_free = atomic<make_unsigned_t<__contention_t_or_largest>>;106# endif // !_LIBCPP_NO_LOCK_FREE_TYPES107#endif // C++20108 109_LIBCPP_END_NAMESPACE_STD110 111#endif // _LIBCPP___ATOMIC_ALIASES_H112