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|
//===----------------------------------------------------------------------===//
//
// 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 <__memory/addressof.h>
#include <__type_traits/is_function.h>
#include <__type_traits/is_same.h>
#include <__type_traits/remove_pointer.h>
#include <cstddef>
#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>
{
using __base = __atomic_base<_Tp>;
using value_type = _Tp;
using difference_type = value_type;
#if _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI
atomic() = default;
#else
_LIBCPP_HIDE_FROM_ABI
atomic() _NOEXCEPT = default;
#endif
_LIBCPP_HIDE_FROM_ABI
_LIBCPP_CONSTEXPR atomic(_Tp __d) _NOEXCEPT : __base(__d) {}
_LIBCPP_HIDE_FROM_ABI
_Tp operator=(_Tp __d) volatile _NOEXCEPT
{__base::store(__d); return __d;}
_LIBCPP_HIDE_FROM_ABI
_Tp operator=(_Tp __d) _NOEXCEPT
{__base::store(__d); return __d;}
atomic& operator=(const atomic&) = delete;
atomic& operator=(const atomic&) volatile = delete;
};
// atomic<T*>
template <class _Tp>
struct atomic<_Tp*>
: public __atomic_base<_Tp*>
{
using __base = __atomic_base<_Tp*>;
using value_type = _Tp*;
using difference_type = ptrdiff_t;
_LIBCPP_HIDE_FROM_ABI
atomic() _NOEXCEPT = default;
_LIBCPP_HIDE_FROM_ABI
_LIBCPP_CONSTEXPR atomic(_Tp* __d) _NOEXCEPT : __base(__d) {}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator=(_Tp* __d) volatile _NOEXCEPT
{__base::store(__d); return __d;}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator=(_Tp* __d) _NOEXCEPT
{__base::store(__d); return __d;}
_LIBCPP_HIDE_FROM_ABI
_Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT {
// __atomic_fetch_add accepts function pointers, guard against them.
static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
return std::__cxx_atomic_fetch_add(std::addressof(this->__a_), __op, __m);
}
_LIBCPP_HIDE_FROM_ABI
_Tp* fetch_add(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT {
// __atomic_fetch_add accepts function pointers, guard against them.
static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
return std::__cxx_atomic_fetch_add(std::addressof(this->__a_), __op, __m);
}
_LIBCPP_HIDE_FROM_ABI
_Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) volatile _NOEXCEPT {
// __atomic_fetch_add accepts function pointers, guard against them.
static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
return std::__cxx_atomic_fetch_sub(std::addressof(this->__a_), __op, __m);
}
_LIBCPP_HIDE_FROM_ABI
_Tp* fetch_sub(ptrdiff_t __op, memory_order __m = memory_order_seq_cst) _NOEXCEPT {
// __atomic_fetch_add accepts function pointers, guard against them.
static_assert(!is_function<__remove_pointer_t<_Tp> >::value, "Pointer to function isn't allowed");
return std::__cxx_atomic_fetch_sub(std::addressof(this->__a_), __op, __m);
}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator++(int) volatile _NOEXCEPT {return fetch_add(1);}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator++(int) _NOEXCEPT {return fetch_add(1);}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator--(int) volatile _NOEXCEPT {return fetch_sub(1);}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator--(int) _NOEXCEPT {return fetch_sub(1);}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator++() volatile _NOEXCEPT {return fetch_add(1) + 1;}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator++() _NOEXCEPT {return fetch_add(1) + 1;}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator--() volatile _NOEXCEPT {return fetch_sub(1) - 1;}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator--() _NOEXCEPT {return fetch_sub(1) - 1;}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator+=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_add(__op) + __op;}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator+=(ptrdiff_t __op) _NOEXCEPT {return fetch_add(__op) + __op;}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator-=(ptrdiff_t __op) volatile _NOEXCEPT {return fetch_sub(__op) - __op;}
_LIBCPP_HIDE_FROM_ABI
_Tp* operator-=(ptrdiff_t __op) _NOEXCEPT {return fetch_sub(__op) - __op;}
atomic& operator=(const atomic&) = delete;
atomic& operator=(const atomic&) volatile = delete;
};
// atomic_is_lock_free
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
bool
atomic_is_lock_free(const volatile atomic<_Tp>* __o) _NOEXCEPT
{
return __o->is_lock_free();
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
bool
atomic_is_lock_free(const atomic<_Tp>* __o) _NOEXCEPT
{
return __o->is_lock_free();
}
// 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
{
std::__cxx_atomic_init(std::addressof(__o->__a_), __d);
}
template <class _Tp>
_LIBCPP_DEPRECATED_IN_CXX20 _LIBCPP_HIDE_FROM_ABI
void
atomic_init(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
{
std::__cxx_atomic_init(std::addressof(__o->__a_), __d);
}
// atomic_store
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
void
atomic_store(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
{
__o->store(__d);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
void
atomic_store(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
{
__o->store(__d);
}
// 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)
{
__o->store(__d, __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)
{
__o->store(__d, __m);
}
// atomic_load
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
_Tp
atomic_load(const volatile atomic<_Tp>* __o) _NOEXCEPT
{
return __o->load();
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
_Tp
atomic_load(const atomic<_Tp>* __o) _NOEXCEPT
{
return __o->load();
}
// 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)
{
return __o->load(__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)
{
return __o->load(__m);
}
// atomic_exchange
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
_Tp
atomic_exchange(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
{
return __o->exchange(__d);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
_Tp
atomic_exchange(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d) _NOEXCEPT
{
return __o->exchange(__d);
}
// 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
{
return __o->exchange(__d, __m);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
_Tp
atomic_exchange_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __d, memory_order __m) _NOEXCEPT
{
return __o->exchange(__d, __m);
}
// 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
{
return __o->compare_exchange_weak(*__e, __d);
}
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
{
return __o->compare_exchange_weak(*__e, __d);
}
// 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
{
return __o->compare_exchange_strong(*__e, __d);
}
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
{
return __o->compare_exchange_strong(*__e, __d);
}
// 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)
{
return __o->compare_exchange_weak(*__e, __d, __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)
{
return __o->compare_exchange_weak(*__e, __d, __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)
{
return __o->compare_exchange_strong(*__e, __d, __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)
{
return __o->compare_exchange_strong(*__e, __d, __s, __f);
}
// 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
{
return __o->wait(__v);
}
template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI
void atomic_wait(const atomic<_Tp>* __o,
typename atomic<_Tp>::value_type __v) _NOEXCEPT
{
return __o->wait(__v);
}
// 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)
{
return __o->wait(__v, __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)
{
return __o->wait(__v, __m);
}
// atomic_notify_one
template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI
void atomic_notify_one(volatile atomic<_Tp>* __o) _NOEXCEPT
{
__o->notify_one();
}
template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI
void atomic_notify_one(atomic<_Tp>* __o) _NOEXCEPT
{
__o->notify_one();
}
// atomic_notify_all
template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI
void atomic_notify_all(volatile atomic<_Tp>* __o) _NOEXCEPT
{
__o->notify_all();
}
template <class _Tp>
_LIBCPP_AVAILABILITY_SYNC _LIBCPP_HIDE_FROM_ABI
void atomic_notify_all(atomic<_Tp>* __o) _NOEXCEPT
{
__o->notify_all();
}
// 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
{
return __o->fetch_add(__op);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
_Tp
atomic_fetch_add(atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op) _NOEXCEPT
{
return __o->fetch_add(__op);
}
// 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
{
return __o->fetch_add(__op, __m);
}
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
{
return __o->fetch_add(__op, __m);
}
// 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
{
return __o->fetch_sub(__op);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
_Tp atomic_fetch_sub(atomic<_Tp>* __o, typename atomic<_Tp>::difference_type __op) _NOEXCEPT
{
return __o->fetch_sub(__op);
}
// 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
{
return __o->fetch_sub(__op, __m);
}
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
{
return __o->fetch_sub(__op, __m);
}
// atomic_fetch_and
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_and(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
{
return __o->fetch_and(__op);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_and(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
{
return __o->fetch_and(__op);
}
// atomic_fetch_and_explicit
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_and_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
{
return __o->fetch_and(__op, __m);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_and_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
{
return __o->fetch_and(__op, __m);
}
// atomic_fetch_or
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_or(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
{
return __o->fetch_or(__op);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_or(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
{
return __o->fetch_or(__op);
}
// atomic_fetch_or_explicit
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_or_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
{
return __o->fetch_or(__op, __m);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_or_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
{
return __o->fetch_or(__op, __m);
}
// atomic_fetch_xor
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_xor(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
{
return __o->fetch_xor(__op);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_xor(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op) _NOEXCEPT
{
return __o->fetch_xor(__op);
}
// atomic_fetch_xor_explicit
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_xor_explicit(volatile atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
{
return __o->fetch_xor(__op, __m);
}
template <class _Tp>
_LIBCPP_HIDE_FROM_ABI
typename enable_if
<
is_integral<_Tp>::value && !is_same<_Tp, bool>::value,
_Tp
>::type
atomic_fetch_xor_explicit(atomic<_Tp>* __o, typename atomic<_Tp>::value_type __op, memory_order __m) _NOEXCEPT
{
return __o->fetch_xor(__op, __m);
}
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP___ATOMIC_ATOMIC_H
|
