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-exception 6// 7//===----------------------------------------------------------------------===// 8 9#ifndef _LIBCPP___ATOMIC_ALIASES_H 10#define _LIBCPP___ATOMIC_ALIASES_H 11 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 <__type_traits/conditional.h> 18#include <__type_traits/make_unsigned.h> 19#include <cstddef> 20#include <cstdint> 21#include <cstdlib> 22 23#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 24# pragma GCC system_header 25#endif 26 27_LIBCPP_BEGIN_NAMESPACE_STD 28 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#ifndef _LIBCPP_HAS_NO_CHAR8_T 42using atomic_char8_t = atomic<char8_t>; 43#endif 44using atomic_char16_t = atomic<char16_t>; 45using atomic_char32_t = atomic<char32_t>; 46#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 47using atomic_wchar_t = atomic<wchar_t>; 48#endif 49 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 type 85#if _LIBCPP_STD_VER >= 20 86# if ATOMIC_LLONG_LOCK_FREE == 2 87using __largest_lock_free_type = long long; 88# elif ATOMIC_INT_LOCK_FREE == 2 89using __largest_lock_free_type = int; 90# elif ATOMIC_SHORT_LOCK_FREE == 2 91using __largest_lock_free_type = short; 92# elif ATOMIC_CHAR_LOCK_FREE == 2 93using __largest_lock_free_type = char; 94# else 95# define _LIBCPP_NO_LOCK_FREE_TYPES // There are no lockfree types (this can happen in freestanding) 96# endif 97 98# ifndef _LIBCPP_NO_LOCK_FREE_TYPES 99using __contention_t_or_largest = 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_TYPES 107#endif // C++20 108 109_LIBCPP_END_NAMESPACE_STD 110 111#endif // _LIBCPP___ATOMIC_ALIASES_H 112