| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| #define _LIBCPP_ATOMIC |
| |
| /* |
| atomic synopsis |
| |
| namespace std |
| { |
| |
| // feature test macro [version.syn] |
| |
| #define __cpp_lib_atomic_is_always_lock_free |
| #define __cpp_lib_atomic_flag_test |
| #define __cpp_lib_atomic_lock_free_type_aliases |
| #define __cpp_lib_atomic_wait |
| |
| // order and consistency |
| |
| enum memory_order: unspecified // enum class in C++20 |
| { |
| relaxed, |
| consume, // load-consume |
| acquire, // load-acquire |
| release, // store-release |
| acq_rel, // store-release load-acquire |
| seq_cst // store-release load-acquire |
| }; |
| |
| inline constexpr auto memory_order_relaxed = memory_order::relaxed; |
| inline constexpr auto memory_order_consume = memory_order::consume; |
| inline constexpr auto memory_order_acquire = memory_order::acquire; |
| inline constexpr auto memory_order_release = memory_order::release; |
| inline constexpr auto memory_order_acq_rel = memory_order::acq_rel; |
| inline constexpr auto memory_order_seq_cst = memory_order::seq_cst; |
| |
| template <class T> T kill_dependency(T y) noexcept; |
| |
| // lock-free property |
| |
| #define ATOMIC_BOOL_LOCK_FREE unspecified |
| #define ATOMIC_CHAR_LOCK_FREE unspecified |
| #define ATOMIC_CHAR8_T_LOCK_FREE unspecified // C++20 |
| #define ATOMIC_CHAR16_T_LOCK_FREE unspecified |
| #define ATOMIC_CHAR32_T_LOCK_FREE unspecified |
| #define ATOMIC_WCHAR_T_LOCK_FREE unspecified |
| #define ATOMIC_SHORT_LOCK_FREE unspecified |
| #define ATOMIC_INT_LOCK_FREE unspecified |
| #define ATOMIC_LONG_LOCK_FREE unspecified |
| #define ATOMIC_LLONG_LOCK_FREE unspecified |
| #define ATOMIC_POINTER_LOCK_FREE unspecified |
| |
| template <class T> |
| struct atomic |
| { |
| using value_type = T; |
| |
| static constexpr bool is_always_lock_free; |
| bool is_lock_free() const volatile noexcept; |
| bool is_lock_free() const noexcept; |
| |
| atomic() noexcept = default; // until C++20 |
| constexpr atomic() noexcept(is_nothrow_default_constructible_v<T>); // since C++20 |
| constexpr atomic(T desr) noexcept; |
| atomic(const atomic&) = delete; |
| atomic& operator=(const atomic&) = delete; |
| atomic& operator=(const atomic&) volatile = delete; |
| |
| T load(memory_order m = memory_order_seq_cst) const volatile noexcept; |
| T load(memory_order m = memory_order_seq_cst) const noexcept; |
| operator T() const volatile noexcept; |
| operator T() const noexcept; |
| void store(T desr, memory_order m = memory_order_seq_cst) volatile noexcept; |
| void store(T desr, memory_order m = memory_order_seq_cst) noexcept; |
| T operator=(T) volatile noexcept; |
| T operator=(T) noexcept; |
| |
| T exchange(T desr, memory_order m = memory_order_seq_cst) volatile noexcept; |
| T exchange(T desr, memory_order m = memory_order_seq_cst) noexcept; |
| bool compare_exchange_weak(T& expc, T desr, |
| memory_order s, memory_order f) volatile noexcept; |
| bool compare_exchange_weak(T& expc, T desr, memory_order s, memory_order f) noexcept; |
| bool compare_exchange_strong(T& expc, T desr, |
| memory_order s, memory_order f) volatile noexcept; |
| bool compare_exchange_strong(T& expc, T desr, |
| memory_order s, memory_order f) noexcept; |
| bool compare_exchange_weak(T& expc, T desr, |
| memory_order m = memory_order_seq_cst) volatile noexcept; |
| bool compare_exchange_weak(T& expc, T desr, |
| memory_order m = memory_order_seq_cst) noexcept; |
| bool compare_exchange_strong(T& expc, T desr, |
| memory_order m = memory_order_seq_cst) volatile noexcept; |
| bool compare_exchange_strong(T& expc, T desr, |
| memory_order m = memory_order_seq_cst) noexcept; |
| |
| void wait(T, memory_order = memory_order::seq_cst) const volatile noexcept; // since C++20 |
| void wait(T, memory_order = memory_order::seq_cst) const noexcept; // since C++20 |
| void notify_one() volatile noexcept; // since C++20 |
| void notify_one() noexcept; // since C++20 |
| void notify_all() volatile noexcept; // since C++20 |
| void notify_all() noexcept; // since C++20 |
| }; |
| |
| template <> |
| struct atomic<integral> |
| { |
| using value_type = integral; |
| using difference_type = value_type; |
| |
| static constexpr bool is_always_lock_free; |
| bool is_lock_free() const volatile noexcept; |
| bool is_lock_free() const noexcept; |
| |
| atomic() noexcept = default; |
| constexpr atomic(integral desr) noexcept; |
| atomic(const atomic&) = delete; |
| atomic& operator=(const atomic&) = delete; |
| atomic& operator=(const atomic&) volatile = delete; |
| |
| integral load(memory_order m = memory_order_seq_cst) const volatile noexcept; |
| integral load(memory_order m = memory_order_seq_cst) const noexcept; |
| operator integral() const volatile noexcept; |
| operator integral() const noexcept; |
| void store(integral desr, memory_order m = memory_order_seq_cst) volatile noexcept; |
| void store(integral desr, memory_order m = memory_order_seq_cst) noexcept; |
| integral operator=(integral desr) volatile noexcept; |
| integral operator=(integral desr) noexcept; |
| |
| integral exchange(integral desr, |
| memory_order m = memory_order_seq_cst) volatile noexcept; |
| integral exchange(integral desr, memory_order m = memory_order_seq_cst) noexcept; |
| bool compare_exchange_weak(integral& expc, integral desr, |
| memory_order s, memory_order f) volatile noexcept; |
| bool compare_exchange_weak(integral& expc, integral desr, |
| memory_order s, memory_order f) noexcept; |
| bool compare_exchange_strong(integral& expc, integral desr, |
| memory_order s, memory_order f) volatile noexcept; |
| bool compare_exchange_strong(integral& expc, integral desr, |
| memory_order s, memory_order f) noexcept; |
| bool compare_exchange_weak(integral& expc, integral desr, |
| memory_order m = memory_order_seq_cst) volatile noexcept; |
| bool compare_exchange_weak(integral& expc, integral desr, |
| memory_order m = memory_order_seq_cst) noexcept; |
| bool compare_exchange_strong(integral& expc, integral desr, |
| memory_order m = memory_order_seq_cst) volatile noexcept; |
| bool compare_exchange_strong(integral& expc, integral desr, |
| memory_order m = memory_order_seq_cst) noexcept; |
| |
| integral fetch_add(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; |
| integral fetch_add(integral op, memory_order m = memory_order_seq_cst) noexcept; |
| integral fetch_sub(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; |
| integral fetch_sub(integral op, memory_order m = memory_order_seq_cst) noexcept; |
| integral fetch_and(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; |
| integral fetch_and(integral op, memory_order m = memory_order_seq_cst) noexcept; |
| integral fetch_or(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; |
| integral fetch_or(integral op, memory_order m = memory_order_seq_cst) noexcept; |
| integral fetch_xor(integral op, memory_order m = memory_order_seq_cst) volatile noexcept; |
| integral fetch_xor(integral op, memory_order m = memory_order_seq_cst) noexcept; |
| |
| integral operator++(int) volatile noexcept; |
| integral operator++(int) noexcept; |
| integral operator--(int) volatile noexcept; |
| integral operator--(int) noexcept; |
| integral operator++() volatile noexcept; |
| integral operator++() noexcept; |
| integral operator--() volatile noexcept; |
| integral operator--() noexcept; |
| integral operator+=(integral op) volatile noexcept; |
| integral operator+=(integral op) noexcept; |
| integral operator-=(integral op) volatile noexcept; |
| integral operator-=(integral op) noexcept; |
| integral operator&=(integral op) volatile noexcept; |
| integral operator&=(integral op) noexcept; |
| integral operator|=(integral op) volatile noexcept; |
| integral operator|=(integral op) noexcept; |
| integral operator^=(integral op) volatile noexcept; |
| integral operator^=(integral op) noexcept; |
| |
| void wait(integral, memory_order = memory_order::seq_cst) const volatile noexcept; // since C++20 |
| void wait(integral, memory_order = memory_order::seq_cst) const noexcept; // since C++20 |
| void notify_one() volatile noexcept; // since C++20 |
| void notify_one() noexcept; // since C++20 |
| void notify_all() volatile noexcept; // since C++20 |
| void notify_all() noexcept; // since C++20 |
| }; |
| |
| template <class T> |
| struct atomic<T*> |
| { |
| using value_type = T*; |
| using difference_type = ptrdiff_t; |
| |
| static constexpr bool is_always_lock_free; |
| bool is_lock_free() const volatile noexcept; |
| bool is_lock_free() const noexcept; |
| |
| atomic() noexcept = default; // until C++20 |
| constexpr atomic() noexcept; // since C++20 |
| constexpr atomic(T* desr) noexcept; |
| atomic(const atomic&) = delete; |
| atomic& operator=(const atomic&) = delete; |
| atomic& operator=(const atomic&) volatile = delete; |
| |
| T* load(memory_order m = memory_order_seq_cst) const volatile noexcept; |
| T* load(memory_order m = memory_order_seq_cst) const noexcept; |
| operator T*() const volatile noexcept; |
| operator T*() const noexcept; |
| void store(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept; |
| void store(T* desr, memory_order m = memory_order_seq_cst) noexcept; |
| T* operator=(T*) volatile noexcept; |
| T* operator=(T*) noexcept; |
| |
| T* exchange(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept; |
| T* exchange(T* desr, memory_order m = memory_order_seq_cst) noexcept; |
| bool compare_exchange_weak(T*& expc, T* desr, |
| memory_order s, memory_order f) volatile noexcept; |
| bool compare_exchange_weak(T*& expc, T* desr, |
| memory_order s, memory_order f) noexcept; |
| bool compare_exchange_strong(T*& expc, T* desr, |
| memory_order s, memory_order f) volatile noexcept; |
| bool compare_exchange_strong(T*& expc, T* desr, |
| memory_order s, memory_order f) noexcept; |
| bool compare_exchange_weak(T*& expc, T* desr, |
| memory_order m = memory_order_seq_cst) volatile noexcept; |
| bool compare_exchange_weak(T*& expc, T* desr, |
| memory_order m = memory_order_seq_cst) noexcept; |
| bool compare_exchange_strong(T*& expc, T* desr, |
| memory_order m = memory_order_seq_cst) volatile noexcept; |
| bool compare_exchange_strong(T*& expc, T* desr, |
| memory_order m = memory_order_seq_cst) noexcept; |
| T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile noexcept; |
| T* fetch_add(ptrdiff_t op, memory_order m = memory_order_seq_cst) noexcept; |
| T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) volatile noexcept; |
| T* fetch_sub(ptrdiff_t op, memory_order m = memory_order_seq_cst) noexcept; |
| |
| T* operator++(int) volatile noexcept; |
| T* operator++(int) noexcept; |
| T* operator--(int) volatile noexcept; |
| T* operator--(int) noexcept; |
| T* operator++() volatile noexcept; |
| T* operator++() noexcept; |
| T* operator--() volatile noexcept; |
| T* operator--() noexcept; |
| T* operator+=(ptrdiff_t op) volatile noexcept; |
| T* operator+=(ptrdiff_t op) noexcept; |
| T* operator-=(ptrdiff_t op) volatile noexcept; |
| T* operator-=(ptrdiff_t op) noexcept; |
| |
| void wait(T*, memory_order = memory_order::seq_cst) const volatile noexcept; // since C++20 |
| void wait(T*, memory_order = memory_order::seq_cst) const noexcept; // since C++20 |
| void notify_one() volatile noexcept; // since C++20 |
| void notify_one() noexcept; // since C++20 |
| void notify_all() volatile noexcept; // since C++20 |
| void notify_all() noexcept; // since C++20 |
| }; |
| |
| template<> |
| struct atomic<floating-point-type> { // since C++20 |
| using value_type = floating-point-type; |
| using difference_type = value_type; |
| |
| static constexpr bool is_always_lock_free = implementation-defined; |
| bool is_lock_free() const volatile noexcept; |
| bool is_lock_free() const noexcept; |
| |
| constexpr atomic() noexcept; |
| constexpr atomic(floating-point-type) noexcept; |
| atomic(const atomic&) = delete; |
| atomic& operator=(const atomic&) = delete; |
| atomic& operator=(const atomic&) volatile = delete; |
| |
| void store(floating-point-type, memory_order = memory_order::seq_cst) volatile noexcept; |
| void store(floating-point-type, memory_order = memory_order::seq_cst) noexcept; |
| floating-point-type operator=(floating-point-type) volatile noexcept; |
| floating-point-type operator=(floating-point-type) noexcept; |
| floating-point-type load(memory_order = memory_order::seq_cst) volatile noexcept; |
| floating-point-type load(memory_order = memory_order::seq_cst) noexcept; |
| operator floating-point-type() volatile noexcept; |
| operator floating-point-type() noexcept; |
| |
| floating-point-type exchange(floating-point-type, |
| memory_order = memory_order::seq_cst) volatile noexcept; |
| floating-point-type exchange(floating-point-type, |
| memory_order = memory_order::seq_cst) noexcept; |
| bool compare_exchange_weak(floating-point-type&, floating-point-type, |
| memory_order, memory_order) volatile noexcept; |
| bool compare_exchange_weak(floating-point-type&, floating-point-type, |
| memory_order, memory_order) noexcept; |
| bool compare_exchange_strong(floating-point-type&, floating-point-type, |
| memory_order, memory_order) volatile noexcept; |
| bool compare_exchange_strong(floating-point-type&, floating-point-type, |
| memory_order, memory_order) noexcept; |
| bool compare_exchange_weak(floating-point-type&, floating-point-type, |
| memory_order = memory_order::seq_cst) volatile noexcept; |
| bool compare_exchange_weak(floating-point-type&, floating-point-type, |
| memory_order = memory_order::seq_cst) noexcept; |
| bool compare_exchange_strong(floating-point-type&, floating-point-type, |
| memory_order = memory_order::seq_cst) volatile noexcept; |
| bool compare_exchange_strong(floating-point-type&, floating-point-type, |
| memory_order = memory_order::seq_cst) noexcept; |
| |
| floating-point-type fetch_add(floating-point-type, |
| memory_order = memory_order::seq_cst) volatile noexcept; |
| floating-point-type fetch_add(floating-point-type, |
| memory_order = memory_order::seq_cst) noexcept; |
| floating-point-type fetch_sub(floating-point-type, |
| memory_order = memory_order::seq_cst) volatile noexcept; |
| floating-point-type fetch_sub(floating-point-type, |
| memory_order = memory_order::seq_cst) noexcept; |
| |
| floating-point-type operator+=(floating-point-type) volatile noexcept; |
| floating-point-type operator+=(floating-point-type) noexcept; |
| floating-point-type operator-=(floating-point-type) volatile noexcept; |
| floating-point-type operator-=(floating-point-type) noexcept; |
| |
| void wait(floating-point-type, memory_order = memory_order::seq_cst) const volatile noexcept; // since C++20 |
| void wait(floating-point-type, memory_order = memory_order::seq_cst) const noexcept; // since C++20 |
| void notify_one() volatile noexcept; // since C++20 |
| void notify_one() noexcept; // since C++20 |
| void notify_all() volatile noexcept; // since C++20 |
| void notify_all() noexcept; // since C++20 |
| }; |
| |
| // [atomics.nonmembers], non-member functions |
| template<class T> |
| bool atomic_is_lock_free(const volatile atomic<T>*) noexcept; |
| template<class T> |
| bool atomic_is_lock_free(const atomic<T>*) noexcept; |
| template<class T> |
| void atomic_store(volatile atomic<T>*, atomic<T>::value_type) noexcept; |
| template<class T> |
| void atomic_store(atomic<T>*, atomic<T>::value_type) noexcept; |
| template<class T> |
| void atomic_store_explicit(volatile atomic<T>*, atomic<T>::value_type, |
| memory_order) noexcept; |
| template<class T> |
| void atomic_store_explicit(atomic<T>*, atomic<T>::value_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_load(const volatile atomic<T>*) noexcept; |
| template<class T> |
| T atomic_load(const atomic<T>*) noexcept; |
| template<class T> |
| T atomic_load_explicit(const volatile atomic<T>*, memory_order) noexcept; |
| template<class T> |
| T atomic_load_explicit(const atomic<T>*, memory_order) noexcept; |
| template<class T> |
| T atomic_exchange(volatile atomic<T>*, atomic<T>::value_type) noexcept; |
| template<class T> |
| T atomic_exchange(atomic<T>*, atomic<T>::value_type) noexcept; |
| template<class T> |
| T atomic_exchange_explicit(volatile atomic<T>*, atomic<T>::value_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_exchange_explicit(atomic<T>*, atomic<T>::value_type, |
| memory_order) noexcept; |
| template<class T> |
| bool atomic_compare_exchange_weak(volatile atomic<T>*, atomic<T>::value_type*, |
| atomic<T>::value_type) noexcept; |
| template<class T> |
| bool atomic_compare_exchange_weak(atomic<T>*, atomic<T>::value_type*, |
| atomic<T>::value_type) noexcept; |
| template<class T> |
| bool atomic_compare_exchange_strong(volatile atomic<T>*, atomic<T>::value_type*, |
| atomic<T>::value_type) noexcept; |
| template<class T> |
| bool atomic_compare_exchange_strong(atomic<T>*, atomic<T>::value_type*, |
| atomic<T>::value_type) noexcept; |
| template<class T> |
| bool atomic_compare_exchange_weak_explicit(volatile atomic<T>*, atomic<T>::value_type*, |
| atomic<T>::value_type, |
| memory_order, memory_order) noexcept; |
| template<class T> |
| bool atomic_compare_exchange_weak_explicit(atomic<T>*, atomic<T>::value_type*, |
| atomic<T>::value_type, |
| memory_order, memory_order) noexcept; |
| template<class T> |
| bool atomic_compare_exchange_strong_explicit(volatile atomic<T>*, atomic<T>::value_type*, |
| atomic<T>::value_type, |
| memory_order, memory_order) noexcept; |
| template<class T> |
| bool atomic_compare_exchange_strong_explicit(atomic<T>*, atomic<T>::value_type*, |
| atomic<T>::value_type, |
| memory_order, memory_order) noexcept; |
| |
| template<class T> |
| T atomic_fetch_add(volatile atomic<T>*, atomic<T>::difference_type) noexcept; |
| template<class T> |
| T atomic_fetch_add(atomic<T>*, atomic<T>::difference_type) noexcept; |
| template<class T> |
| T atomic_fetch_add_explicit(volatile atomic<T>*, atomic<T>::difference_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_fetch_add_explicit(atomic<T>*, atomic<T>::difference_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_fetch_sub(volatile atomic<T>*, atomic<T>::difference_type) noexcept; |
| template<class T> |
| T atomic_fetch_sub(atomic<T>*, atomic<T>::difference_type) noexcept; |
| template<class T> |
| T atomic_fetch_sub_explicit(volatile atomic<T>*, atomic<T>::difference_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_fetch_sub_explicit(atomic<T>*, atomic<T>::difference_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_fetch_and(volatile atomic<T>*, atomic<T>::value_type) noexcept; |
| template<class T> |
| T atomic_fetch_and(atomic<T>*, atomic<T>::value_type) noexcept; |
| template<class T> |
| T atomic_fetch_and_explicit(volatile atomic<T>*, atomic<T>::value_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_fetch_and_explicit(atomic<T>*, atomic<T>::value_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_fetch_or(volatile atomic<T>*, atomic<T>::value_type) noexcept; |
| template<class T> |
| T atomic_fetch_or(atomic<T>*, atomic<T>::value_type) noexcept; |
| template<class T> |
| T atomic_fetch_or_explicit(volatile atomic<T>*, atomic<T>::value_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_fetch_or_explicit(atomic<T>*, atomic<T>::value_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_fetch_xor(volatile atomic<T>*, atomic<T>::value_type) noexcept; |
| template<class T> |
| T atomic_fetch_xor(atomic<T>*, atomic<T>::value_type) noexcept; |
| template<class T> |
| T atomic_fetch_xor_explicit(volatile atomic<T>*, atomic<T>::value_type, |
| memory_order) noexcept; |
| template<class T> |
| T atomic_fetch_xor_explicit(atomic<T>*, atomic<T>::value_type, |
| memory_order) noexcept; |
| |
| template<class T> |
| void atomic_wait(const volatile atomic<T>*, atomic<T>::value_type) noexcept; // since C++20 |
| template<class T> |
| void atomic_wait(const atomic<T>*, atomic<T>::value_type) noexcept; // since C++20 |
| template<class T> |
| void atomic_wait_explicit(const volatile atomic<T>*, atomic<T>::value_type, // since C++20 |
| memory_order) noexcept; |
| template<class T> |
| void atomic_wait_explicit(const atomic<T>*, atomic<T>::value_type, // since C++20 |
| memory_order) noexcept; |
| template<class T> |
| void atomic_notify_one(volatile atomic<T>*) noexcept; // since C++20 |
| template<class T> |
| void atomic_notify_one(atomic<T>*) noexcept; // since C++20 |
| template<class T> |
| void atomic_notify_all(volatile atomic<T>*) noexcept; // since C++20 |
| template<class T> |
| void atomic_notify_all(atomic<T>*) noexcept; // since C++20 |
| |
| // Atomics for standard typedef types |
| |
| typedef atomic<bool> atomic_bool; |
| typedef atomic<char> atomic_char; |
| typedef atomic<signed char> atomic_schar; |
| typedef atomic<unsigned char> atomic_uchar; |
| typedef atomic<short> atomic_short; |
| typedef atomic<unsigned short> atomic_ushort; |
| typedef atomic<int> atomic_int; |
| typedef atomic<unsigned int> atomic_uint; |
| typedef atomic<long> atomic_long; |
| typedef atomic<unsigned long> atomic_ulong; |
| typedef atomic<long long> atomic_llong; |
| typedef atomic<unsigned long long> atomic_ullong; |
| typedef atomic<char8_t> atomic_char8_t; // C++20 |
| typedef atomic<char16_t> atomic_char16_t; |
| typedef atomic<char32_t> atomic_char32_t; |
| typedef atomic<wchar_t> atomic_wchar_t; |
| |
| typedef atomic<int_least8_t> atomic_int_least8_t; |
| typedef atomic<uint_least8_t> atomic_uint_least8_t; |
| typedef atomic<int_least16_t> atomic_int_least16_t; |
| typedef atomic<uint_least16_t> atomic_uint_least16_t; |
| typedef atomic<int_least32_t> atomic_int_least32_t; |
| typedef atomic<uint_least32_t> atomic_uint_least32_t; |
| typedef atomic<int_least64_t> atomic_int_least64_t; |
| typedef atomic<uint_least64_t> atomic_uint_least64_t; |
| |
| typedef atomic<int_fast8_t> atomic_int_fast8_t; |
| typedef atomic<uint_fast8_t> atomic_uint_fast8_t; |
| typedef atomic<int_fast16_t> atomic_int_fast16_t; |
| typedef atomic<uint_fast16_t> atomic_uint_fast16_t; |
| typedef atomic<int_fast32_t> atomic_int_fast32_t; |
| typedef atomic<uint_fast32_t> atomic_uint_fast32_t; |
| typedef atomic<int_fast64_t> atomic_int_fast64_t; |
| typedef atomic<uint_fast64_t> atomic_uint_fast64_t; |
| |
| typedef atomic<int8_t> atomic_int8_t; |
| typedef atomic<uint8_t> atomic_uint8_t; |
| typedef atomic<int16_t> atomic_int16_t; |
| typedef atomic<uint16_t> atomic_uint16_t; |
| typedef atomic<int32_t> atomic_int32_t; |
| typedef atomic<uint32_t> atomic_uint32_t; |
| typedef atomic<int64_t> atomic_int64_t; |
| typedef atomic<uint64_t> atomic_uint64_t; |
| |
| typedef atomic<intptr_t> atomic_intptr_t; |
| typedef atomic<uintptr_t> atomic_uintptr_t; |
| typedef atomic<size_t> atomic_size_t; |
| typedef atomic<ptrdiff_t> atomic_ptrdiff_t; |
| typedef atomic<intmax_t> atomic_intmax_t; |
| typedef atomic<uintmax_t> atomic_uintmax_t; |
| |
| typedef see-below atomic_signed_lock_free; // since C++20 |
| typedef see-below atomic_unsigned_lock_free; // since C++20 |
| |
| // flag type and operations |
| |
| typedef struct atomic_flag |
| { |
| atomic_flag() noexcept = default; // until C++20 |
| constexpr atomic_flag() noexcept; // since C++20 |
| atomic_flag(const atomic_flag&) = delete; |
| atomic_flag& operator=(const atomic_flag&) = delete; |
| atomic_flag& operator=(const atomic_flag&) volatile = delete; |
| |
| bool test(memory_order m = memory_order_seq_cst) volatile noexcept; |
| bool test(memory_order m = memory_order_seq_cst) noexcept; |
| bool test_and_set(memory_order m = memory_order_seq_cst) volatile noexcept; |
| bool test_and_set(memory_order m = memory_order_seq_cst) noexcept; |
| void clear(memory_order m = memory_order_seq_cst) volatile noexcept; |
| void clear(memory_order m = memory_order_seq_cst) noexcept; |
| |
| void wait(bool, memory_order = memory_order::seq_cst) const volatile noexcept; // since C++20 |
| void wait(bool, memory_order = memory_order::seq_cst) const noexcept; // since C++20 |
| void notify_one() volatile noexcept; // since C++20 |
| void notify_one() noexcept; // since C++20 |
| void notify_all() volatile noexcept; // since C++20 |
| void notify_all() noexcept; // since C++20 |
| } atomic_flag; |
| |
| bool atomic_flag_test(volatile atomic_flag* obj) noexcept; |
| bool atomic_flag_test(atomic_flag* obj) noexcept; |
| bool atomic_flag_test_explicit(volatile atomic_flag* obj, |
| memory_order m) noexcept; |
| bool atomic_flag_test_explicit(atomic_flag* obj, memory_order m) noexcept; |
| bool atomic_flag_test_and_set(volatile atomic_flag* obj) noexcept; |
| bool atomic_flag_test_and_set(atomic_flag* obj) noexcept; |
| bool atomic_flag_test_and_set_explicit(volatile atomic_flag* obj, |
| memory_order m) noexcept; |
| bool atomic_flag_test_and_set_explicit(atomic_flag* obj, memory_order m) noexcept; |
| void atomic_flag_clear(volatile atomic_flag* obj) noexcept; |
| void atomic_flag_clear(atomic_flag* obj) noexcept; |
| void atomic_flag_clear_explicit(volatile atomic_flag* obj, memory_order m) noexcept; |
| void atomic_flag_clear_explicit(atomic_flag* obj, memory_order m) noexcept; |
| |
| void atomic_wait(const volatile atomic_flag* obj, T old) noexcept; // since C++20 |
| void atomic_wait(const atomic_flag* obj, T old) noexcept; // since C++20 |
| void atomic_wait_explicit(const volatile atomic_flag* obj, T old, memory_order m) noexcept; // since C++20 |
| void atomic_wait_explicit(const atomic_flag* obj, T old, memory_order m) noexcept; // since C++20 |
| void atomic_one(volatile atomic_flag* obj) noexcept; // since C++20 |
| void atomic_one(atomic_flag* obj) noexcept; // since C++20 |
| void atomic_all(volatile atomic_flag* obj) noexcept; // since C++20 |
| void atomic_all(atomic_flag* obj) noexcept; // since C++20 |
| |
| // fences |
| |
| void atomic_thread_fence(memory_order m) noexcept; |
| void atomic_signal_fence(memory_order m) noexcept; |
| |
| // deprecated |
| |
| template <class T> |
| void atomic_init(volatile atomic<T>* obj, atomic<T>::value_type desr) noexcept; |
| |
| template <class T> |
| void atomic_init(atomic<T>* obj, atomic<T>::value_type desr) noexcept; |
| |
| #define ATOMIC_VAR_INIT(value) see below |
| |
| #define ATOMIC_FLAG_INIT see below |
| |
| } // std |
| |
| */ |
| |
| #include <__config> |
| |
| #if _LIBCPP_STD_VER < 23 && defined(_LIBCPP_STDATOMIC_H) |
| # error <atomic> is incompatible with <stdatomic.h> before C++23. Please compile with -std=c++23. |
| #endif |
| |
| #include <__atomic/aliases.h> |
| #include <__atomic/atomic.h> |
| #include <__atomic/atomic_base.h> |
| #include <__atomic/atomic_flag.h> |
| #include <__atomic/atomic_init.h> |
| #include <__atomic/atomic_lock_free.h> |
| #include <__atomic/atomic_sync.h> |
| #include <__atomic/check_memory_order.h> |
| #include <__atomic/contention_t.h> |
| #include <__atomic/cxx_atomic_impl.h> |
| #include <__atomic/fence.h> |
| #include <__atomic/is_always_lock_free.h> |
| #include <__atomic/kill_dependency.h> |
| #include <__atomic/memory_order.h> |
| #include <version> |
| |
| #if _LIBCPP_STD_VER >= 20 |
| # include <__atomic/atomic_ref.h> |
| #endif |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| #ifdef _LIBCPP_HAS_NO_ATOMIC_HEADER |
| # error <atomic> is not implemented |
| #endif |
| |
| #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 |
| # include <cmath> |
| # include <compare> |
| # include <cstdlib> |
| # include <cstring> |
| # include <type_traits> |
| #endif |
| |
| #endif // _LIBCPP_ATOMIC |
