chromium/third_party/libc++/src/include/__atomic/atomic.h

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, 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
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP___ATOMIC_ATOMIC_H
#define _LIBCPP___ATOMIC_ATOMIC_H

#include <__atomic/atomic_base.h>
#include <__atomic/check_memory_order.h>
#include <__atomic/cxx_atomic_impl.h>
#include <__atomic/memory_order.h>
#include <__config>
#include <__functional/operations.h>
#include <__memory/addressof.h>
#include <__type_traits/is_floating_point.h>
#include <__type_traits/is_function.h>
#include <__type_traits/is_same.h>
#include <__type_traits/remove_const.h>
#include <__type_traits/remove_pointer.h>
#include <__type_traits/remove_volatile.h>
#include <__utility/forward.h>
#include <cstddef>
#include <cstring>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

template <class _Tp>
struct atomic : public __atomic_base<_Tp> { … };

// atomic<T*>

atomic<_Tp *>;

#if _LIBCPP_STD_VER >= 20
atomic<_Tp>;

#endif // _LIBCPP_STD_VER >= 20

// atomic_is_lock_free

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI bool atomic_is_lock_free(const volatile atomic<_Tp>* __o) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI bool atomic_is_lock_free(const atomic<_Tp>* __o) _NOEXCEPT { … }

// atomic_init

template <class _Tp>
_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_HIDE_FROM_ABI void
atomic_init(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_HIDE_FROM_ABI void
atomic_init(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT { … }

// atomic_store

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI void atomic_store(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI void atomic_store(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT { … }

// atomic_store_explicit

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI void
atomic_store_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
    _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI void
atomic_store_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
    _LIBCPP_CHECK_STORE_MEMORY_ORDER(__m) { … }

// atomic_load

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_load(const volatile atomic<_Tp>* __o) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_load(const atomic<_Tp>* __o) _NOEXCEPT { … }

// atomic_load_explicit

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_load_explicit(const volatile atomic<_Tp>* __o, memory_order __m) _NOEXCEPT
    _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_load_explicit(const atomic<_Tp>* __o, memory_order __m) _NOEXCEPT
    _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) { … }

// atomic_exchange

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_exchange(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_exchange(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT { … }

// atomic_exchange_explicit

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp
atomic_exchange_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp
atomic_exchange_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT { … }

// atomic_compare_exchange_weak

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI bool atomic_compare_exchange_weak(
    volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI bool atomic_compare_exchange_weak(
    atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT { … }

// atomic_compare_exchange_strong

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI bool atomic_compare_exchange_strong(
    volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI bool atomic_compare_exchange_strong(
    atomic<_Tp>* __o, typename atomic<_Tp>::value_type* __e, typename atomic<_Tp>::value_type __d) _NOEXCEPT { … }

// atomic_compare_exchange_weak_explicit

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI bool atomic_compare_exchange_weak_explicit(
    volatile atomic<_Tp>* __o,
    typename atomic<_Tp>::value_type* __e,
    typename atomic<_Tp>::value_type __d,
    memory_order __s,
    memory_order __f) _NOEXCEPT _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI bool atomic_compare_exchange_weak_explicit(
    atomic<_Tp>* __o,
    typename atomic<_Tp>::value_type* __e,
    typename atomic<_Tp>::value_type __d,
    memory_order __s,
    memory_order __f) _NOEXCEPT _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) { … }

// atomic_compare_exchange_strong_explicit

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI bool atomic_compare_exchange_strong_explicit(
    volatile atomic<_Tp>* __o,
    typename atomic<_Tp>::value_type* __e,
    typename atomic<_Tp>::value_type __d,
    memory_order __s,
    memory_order __f) _NOEXCEPT _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI bool atomic_compare_exchange_strong_explicit(
    atomic<_Tp>* __o,
    typename atomic<_Tp>::value_type* __e,
    typename atomic<_Tp>::value_type __d,
    memory_order __s,
    memory_order __f) _NOEXCEPT _LIBCPP_CHECK_EXCHANGE_MEMORY_ORDER(__s, __f) { … }

#if _LIBCPP_STD_VER >= 20

// atomic_wait

template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void
atomic_wait(const volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __v) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void
atomic_wait(const atomic<_Tp>* __o, typename atomic<_Tp>::value_type __v) _NOEXCEPT { … }

// atomic_wait_explicit

template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void
atomic_wait_explicit(const volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __v, memory_order __m) _NOEXCEPT
    _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) { … }

template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void
atomic_wait_explicit(const atomic<_Tp>* __o, typename atomic<_Tp>::value_type __v, memory_order __m) _NOEXCEPT
    _LIBCPP_CHECK_LOAD_MEMORY_ORDER(__m) { … }

// atomic_notify_one

template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void atomic_notify_one(volatile atomic<_Tp>* __o) _NOEXCEPT { … }
template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void atomic_notify_one(atomic<_Tp>* __o) _NOEXCEPT { … }

// atomic_notify_all

template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void atomic_notify_all(volatile atomic<_Tp>* __o) _NOEXCEPT { … }
template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI void atomic_notify_all(atomic<_Tp>* __o) _NOEXCEPT { … }

#endif // _LIBCPP_STD_VER >= 20

// atomic_fetch_add

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp
atomic_fetch_add(volatile atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_add(atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op) _NOEXCEPT { … }

// atomic_fetch_add_explicit

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_add_explicit(
    volatile atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op, memory_order __m) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp
atomic_fetch_add_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op, memory_order __m) _NOEXCEPT { … }

// atomic_fetch_sub

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp
atomic_fetch_sub(volatile atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_sub(atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op) _NOEXCEPT { … }

// atomic_fetch_sub_explicit

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_sub_explicit(
    volatile atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op, memory_order __m) _NOEXCEPT { … }

template <class _Tp>
_LIBCPP_HIDE_FROM_ABI _Tp
atomic_fetch_sub_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op, memory_order __m) _NOEXCEPT { … }

// atomic_fetch_and

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_and(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT { … }

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_and(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT { … }

// atomic_fetch_and_explicit

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_and_explicit(
    volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT { … }

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp
atomic_fetch_and_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT { … }

// atomic_fetch_or

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_or(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT { … }

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_or(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT { … }

// atomic_fetch_or_explicit

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp
atomic_fetch_or_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT { … }

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp
atomic_fetch_or_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT { … }

// atomic_fetch_xor

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_xor(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT { … }

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_xor(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT { … }

// atomic_fetch_xor_explicit

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp atomic_fetch_xor_explicit(
    volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT { … }

template <class _Tp, __enable_if_t<is_integral<_Tp>::value && !is_same<_Tp, bool>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp
atomic_fetch_xor_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT { … }

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP___ATOMIC_ATOMIC_H