2010-09-27 21:17:38 +00:00
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// -*- C++ -*-
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2021-11-17 16:25:01 -05:00
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//===----------------------------------------------------------------------===//
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2010-09-27 21:17:38 +00:00
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//
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2019-01-19 08:50:56 +00:00
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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2010-09-27 21:17:38 +00:00
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_ATOMIC
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#define _LIBCPP_ATOMIC
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/*
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atomic synopsis
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namespace std
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{
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2020-09-09 10:00:09 -07:00
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// feature test macro [version.syn]
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2016-03-25 15:48:21 +00:00
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2020-09-09 10:00:09 -07:00
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#define __cpp_lib_atomic_is_always_lock_free
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#define __cpp_lib_atomic_flag_test
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#define __cpp_lib_atomic_lock_free_type_aliases
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#define __cpp_lib_atomic_wait
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2016-03-25 15:48:21 +00:00
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2019-03-05 18:40:49 +00:00
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// order and consistency
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enum memory_order: unspecified // enum class in C++20
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{
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relaxed,
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consume, // load-consume
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acquire, // load-acquire
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release, // store-release
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acq_rel, // store-release load-acquire
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seq_cst // store-release load-acquire
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};
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inline constexpr auto memory_order_relaxed = memory_order::relaxed;
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inline constexpr auto memory_order_consume = memory_order::consume;
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inline constexpr auto memory_order_acquire = memory_order::acquire;
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inline constexpr auto memory_order_release = memory_order::release;
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inline constexpr auto memory_order_acq_rel = memory_order::acq_rel;
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inline constexpr auto memory_order_seq_cst = memory_order::seq_cst;
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2010-09-27 21:17:38 +00:00
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2012-04-11 20:14:21 +00:00
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template <class T> T kill_dependency(T y) noexcept;
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2010-09-27 21:17:38 +00:00
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// lock-free property
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2013-01-21 20:39:41 +00:00
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#define ATOMIC_BOOL_LOCK_FREE unspecified
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2010-09-27 21:17:38 +00:00
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#define ATOMIC_CHAR_LOCK_FREE unspecified
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2020-11-24 21:07:06 +01:00
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#define ATOMIC_CHAR8_T_LOCK_FREE unspecified // C++20
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2010-09-27 21:17:38 +00:00
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#define ATOMIC_CHAR16_T_LOCK_FREE unspecified
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#define ATOMIC_CHAR32_T_LOCK_FREE unspecified
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#define ATOMIC_WCHAR_T_LOCK_FREE unspecified
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#define ATOMIC_SHORT_LOCK_FREE unspecified
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#define ATOMIC_INT_LOCK_FREE unspecified
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#define ATOMIC_LONG_LOCK_FREE unspecified
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#define ATOMIC_LLONG_LOCK_FREE unspecified
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2013-01-21 20:39:41 +00:00
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#define ATOMIC_POINTER_LOCK_FREE unspecified
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2010-09-27 21:17:38 +00:00
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2010-12-06 23:10:08 +00:00
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template <class T>
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struct atomic
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2010-09-27 21:17:38 +00:00
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{
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2020-06-01 14:30:13 -07:00
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using value_type = T;
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2016-03-25 15:48:21 +00:00
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static constexpr bool is_always_lock_free;
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2012-04-11 20:14:21 +00:00
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bool is_lock_free() const volatile noexcept;
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bool is_lock_free() const noexcept;
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2020-06-01 14:30:13 -07:00
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2021-06-06 19:02:20 +03:00
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atomic() noexcept = default; // until C++20
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constexpr atomic() noexcept(is_nothrow_default_constructible_v<T>); // since C++20
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2020-06-01 14:30:13 -07:00
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constexpr atomic(T desr) noexcept;
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atomic(const atomic&) = delete;
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atomic& operator=(const atomic&) = delete;
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atomic& operator=(const atomic&) volatile = delete;
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2012-04-11 20:14:21 +00:00
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T load(memory_order m = memory_order_seq_cst) const volatile noexcept;
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T load(memory_order m = memory_order_seq_cst) const noexcept;
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operator T() const volatile noexcept;
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operator T() const noexcept;
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2020-06-01 14:30:13 -07:00
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void store(T desr, memory_order m = memory_order_seq_cst) volatile noexcept;
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void store(T desr, memory_order m = memory_order_seq_cst) noexcept;
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T operator=(T) volatile noexcept;
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T operator=(T) noexcept;
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2012-04-11 20:14:21 +00:00
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T exchange(T desr, memory_order m = memory_order_seq_cst) volatile noexcept;
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T exchange(T desr, memory_order m = memory_order_seq_cst) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(T& expc, T desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) volatile noexcept;
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bool compare_exchange_weak(T& expc, T desr, memory_order s, memory_order f) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_strong(T& expc, T desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) volatile noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_strong(T& expc, T desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(T& expc, T desr,
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2012-04-11 20:14:21 +00:00
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memory_order m = memory_order_seq_cst) volatile noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(T& expc, T desr,
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2012-04-11 20:14:21 +00:00
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memory_order m = memory_order_seq_cst) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_strong(T& expc, T desr,
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2012-04-11 20:14:21 +00:00
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memory_order m = memory_order_seq_cst) volatile noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_strong(T& expc, T desr,
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2012-04-11 20:14:21 +00:00
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memory_order m = memory_order_seq_cst) noexcept;
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2010-09-27 21:17:38 +00:00
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2024-07-31 16:53:09 -05:00
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void wait(T, memory_order = memory_order::seq_cst) const volatile noexcept; // since C++20
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void wait(T, memory_order = memory_order::seq_cst) const noexcept; // since C++20
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void notify_one() volatile noexcept; // since C++20
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void notify_one() noexcept; // since C++20
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void notify_all() volatile noexcept; // since C++20
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void notify_all() noexcept; // since C++20
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2010-12-06 23:10:08 +00:00
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};
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2010-09-27 21:17:38 +00:00
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2010-12-06 23:10:08 +00:00
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template <>
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struct atomic<integral>
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2010-09-27 21:17:38 +00:00
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{
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2020-06-01 14:30:13 -07:00
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using value_type = integral;
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2020-09-09 10:00:09 -07:00
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using difference_type = value_type;
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2020-06-01 14:30:13 -07:00
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2016-03-25 15:48:21 +00:00
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static constexpr bool is_always_lock_free;
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2012-04-11 20:14:21 +00:00
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bool is_lock_free() const volatile noexcept;
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bool is_lock_free() const noexcept;
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2020-06-01 14:30:13 -07:00
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atomic() noexcept = default;
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constexpr atomic(integral desr) noexcept;
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atomic(const atomic&) = delete;
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atomic& operator=(const atomic&) = delete;
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atomic& operator=(const atomic&) volatile = delete;
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2012-04-11 20:14:21 +00:00
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integral load(memory_order m = memory_order_seq_cst) const volatile noexcept;
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integral load(memory_order m = memory_order_seq_cst) const noexcept;
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operator integral() const volatile noexcept;
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operator integral() const noexcept;
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2020-06-01 14:30:13 -07:00
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void store(integral desr, memory_order m = memory_order_seq_cst) volatile noexcept;
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void store(integral desr, memory_order m = memory_order_seq_cst) noexcept;
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integral operator=(integral desr) volatile noexcept;
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integral operator=(integral desr) noexcept;
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2010-12-06 23:10:08 +00:00
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integral exchange(integral desr,
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2012-04-11 20:14:21 +00:00
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memory_order m = memory_order_seq_cst) volatile noexcept;
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integral exchange(integral desr, memory_order m = memory_order_seq_cst) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(integral& expc, integral desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) volatile noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(integral& expc, integral desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_strong(integral& expc, integral desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) volatile noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_strong(integral& expc, integral desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(integral& expc, integral desr,
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2012-04-11 20:14:21 +00:00
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memory_order m = memory_order_seq_cst) volatile noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(integral& expc, integral desr,
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2012-04-11 20:14:21 +00:00
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memory_order m = memory_order_seq_cst) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_strong(integral& expc, integral desr,
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2012-04-11 20:14:21 +00:00
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memory_order m = memory_order_seq_cst) volatile noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_strong(integral& expc, integral desr,
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2012-04-11 20:14:21 +00:00
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memory_order m = memory_order_seq_cst) noexcept;
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2010-12-06 23:10:08 +00:00
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2020-06-01 14:30:13 -07:00
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integral fetch_add(integral op, memory_order m = memory_order_seq_cst) volatile noexcept;
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2012-04-11 20:14:21 +00:00
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integral fetch_add(integral op, memory_order m = memory_order_seq_cst) noexcept;
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2020-06-01 14:30:13 -07:00
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integral fetch_sub(integral op, memory_order m = memory_order_seq_cst) volatile noexcept;
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2012-04-11 20:14:21 +00:00
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integral fetch_sub(integral op, memory_order m = memory_order_seq_cst) noexcept;
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2020-06-01 14:30:13 -07:00
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integral fetch_and(integral op, memory_order m = memory_order_seq_cst) volatile noexcept;
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2012-04-11 20:14:21 +00:00
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integral fetch_and(integral op, memory_order m = memory_order_seq_cst) noexcept;
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2020-06-01 14:30:13 -07:00
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integral fetch_or(integral op, memory_order m = memory_order_seq_cst) volatile noexcept;
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2012-04-11 20:14:21 +00:00
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integral fetch_or(integral op, memory_order m = memory_order_seq_cst) noexcept;
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2020-06-01 14:30:13 -07:00
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integral fetch_xor(integral op, memory_order m = memory_order_seq_cst) volatile noexcept;
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2012-04-11 20:14:21 +00:00
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integral fetch_xor(integral op, memory_order m = memory_order_seq_cst) noexcept;
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2010-09-27 21:17:38 +00:00
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2012-04-11 20:14:21 +00:00
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integral operator++(int) volatile noexcept;
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integral operator++(int) noexcept;
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integral operator--(int) volatile noexcept;
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integral operator--(int) noexcept;
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integral operator++() volatile noexcept;
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integral operator++() noexcept;
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integral operator--() volatile noexcept;
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integral operator--() noexcept;
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integral operator+=(integral op) volatile noexcept;
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integral operator+=(integral op) noexcept;
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integral operator-=(integral op) volatile noexcept;
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integral operator-=(integral op) noexcept;
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integral operator&=(integral op) volatile noexcept;
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integral operator&=(integral op) noexcept;
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integral operator|=(integral op) volatile noexcept;
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integral operator|=(integral op) noexcept;
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integral operator^=(integral op) volatile noexcept;
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integral operator^=(integral op) noexcept;
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2020-06-01 14:30:13 -07:00
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2024-07-31 16:53:09 -05:00
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void wait(integral, memory_order = memory_order::seq_cst) const volatile noexcept; // since C++20
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void wait(integral, memory_order = memory_order::seq_cst) const noexcept; // since C++20
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void notify_one() volatile noexcept; // since C++20
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void notify_one() noexcept; // since C++20
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void notify_all() volatile noexcept; // since C++20
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void notify_all() noexcept; // since C++20
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2010-12-06 23:10:08 +00:00
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};
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2010-09-27 21:17:38 +00:00
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2010-12-06 23:10:08 +00:00
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template <class T>
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struct atomic<T*>
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2010-09-27 21:17:38 +00:00
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{
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2020-06-01 14:30:13 -07:00
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using value_type = T*;
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2020-09-09 10:00:09 -07:00
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using difference_type = ptrdiff_t;
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2020-06-01 14:30:13 -07:00
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2016-03-25 15:48:21 +00:00
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static constexpr bool is_always_lock_free;
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2012-04-11 20:14:21 +00:00
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bool is_lock_free() const volatile noexcept;
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bool is_lock_free() const noexcept;
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2020-06-01 14:30:13 -07:00
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2021-06-06 19:02:20 +03:00
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atomic() noexcept = default; // until C++20
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constexpr atomic() noexcept; // since C++20
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2020-06-01 14:30:13 -07:00
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constexpr atomic(T* desr) noexcept;
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atomic(const atomic&) = delete;
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atomic& operator=(const atomic&) = delete;
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atomic& operator=(const atomic&) volatile = delete;
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2012-04-11 20:14:21 +00:00
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T* load(memory_order m = memory_order_seq_cst) const volatile noexcept;
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T* load(memory_order m = memory_order_seq_cst) const noexcept;
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operator T*() const volatile noexcept;
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operator T*() const noexcept;
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2020-06-01 14:30:13 -07:00
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void store(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept;
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void store(T* desr, memory_order m = memory_order_seq_cst) noexcept;
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T* operator=(T*) volatile noexcept;
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T* operator=(T*) noexcept;
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2012-04-11 20:14:21 +00:00
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T* exchange(T* desr, memory_order m = memory_order_seq_cst) volatile noexcept;
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T* exchange(T* desr, memory_order m = memory_order_seq_cst) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(T*& expc, T* desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) volatile noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(T*& expc, T* desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_strong(T*& expc, T* desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) volatile noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_strong(T*& expc, T* desr,
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2012-04-11 20:14:21 +00:00
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memory_order s, memory_order f) noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(T*& expc, T* desr,
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2012-04-11 20:14:21 +00:00
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memory_order m = memory_order_seq_cst) volatile noexcept;
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2010-12-06 23:10:08 +00:00
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bool compare_exchange_weak(T*& expc, T* desr,
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2012-04-11 20:14:21 +00:00
|
|
|
memory_order m = memory_order_seq_cst) noexcept;
|
2010-12-06 23:10:08 +00:00
|
|
|
bool compare_exchange_strong(T*& expc, T* desr,
|
2012-04-11 20:14:21 +00:00
|
|
|
memory_order m = memory_order_seq_cst) volatile noexcept;
|
2010-12-06 23:10:08 +00:00
|
|
|
bool compare_exchange_strong(T*& expc, T* desr,
|
2012-04-11 20:14:21 +00:00
|
|
|
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;
|
2020-06-01 14:30:13 -07:00
|
|
|
|
2024-07-31 16:53:09 -05:00
|
|
|
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
|
2010-12-06 23:10:08 +00:00
|
|
|
};
|
2010-09-27 21:17:38 +00:00
|
|
|
|
2023-11-22 11:48:49 +00:00
|
|
|
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;
|
|
|
|
|
|
2024-07-31 16:53:09 -05:00
|
|
|
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
|
2023-11-22 11:48:49 +00:00
|
|
|
};
|
2010-09-27 21:17:38 +00:00
|
|
|
|
2021-06-06 14:48:08 +02:00
|
|
|
// [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>
|
2024-07-31 16:53:09 -05:00
|
|
|
void atomic_wait(const volatile atomic<T>*, atomic<T>::value_type) noexcept; // since C++20
|
2021-06-06 14:48:08 +02:00
|
|
|
template<class T>
|
2024-07-31 16:53:09 -05:00
|
|
|
void atomic_wait(const atomic<T>*, atomic<T>::value_type) noexcept; // since C++20
|
2021-06-06 14:48:08 +02:00
|
|
|
template<class T>
|
2024-07-31 16:53:09 -05:00
|
|
|
void atomic_wait_explicit(const volatile atomic<T>*, atomic<T>::value_type, // since C++20
|
2022-12-22 20:35:36 +01:00
|
|
|
memory_order) noexcept;
|
2021-06-06 14:48:08 +02:00
|
|
|
template<class T>
|
2024-07-31 16:53:09 -05:00
|
|
|
void atomic_wait_explicit(const atomic<T>*, atomic<T>::value_type, // since C++20
|
2022-12-22 20:35:36 +01:00
|
|
|
memory_order) noexcept;
|
2021-06-06 14:48:08 +02:00
|
|
|
template<class T>
|
2024-07-31 16:53:09 -05:00
|
|
|
void atomic_notify_one(volatile atomic<T>*) noexcept; // since C++20
|
2021-06-06 14:48:08 +02:00
|
|
|
template<class T>
|
2024-07-31 16:53:09 -05:00
|
|
|
void atomic_notify_one(atomic<T>*) noexcept; // since C++20
|
2021-06-06 14:48:08 +02:00
|
|
|
template<class T>
|
2024-07-31 16:53:09 -05:00
|
|
|
void atomic_notify_all(volatile atomic<T>*) noexcept; // since C++20
|
2021-06-06 14:48:08 +02:00
|
|
|
template<class T>
|
2024-07-31 16:53:09 -05:00
|
|
|
void atomic_notify_all(atomic<T>*) noexcept; // since C++20
|
2010-12-06 23:10:08 +00:00
|
|
|
|
|
|
|
|
// Atomics for standard typedef types
|
|
|
|
|
|
2013-01-04 18:58:50 +00:00
|
|
|
typedef atomic<bool> atomic_bool;
|
2010-12-06 23:10:08 +00:00
|
|
|
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;
|
2020-11-24 21:07:06 +01:00
|
|
|
typedef atomic<char8_t> atomic_char8_t; // C++20
|
2010-12-06 23:10:08 +00:00
|
|
|
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;
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typedef atomic<uint_least64_t> atomic_uint_least64_t;
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typedef atomic<int_fast8_t> atomic_int_fast8_t;
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typedef atomic<uint_fast8_t> atomic_uint_fast8_t;
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typedef atomic<int_fast16_t> atomic_int_fast16_t;
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typedef atomic<uint_fast16_t> atomic_uint_fast16_t;
|
2020-11-04 14:07:59 -05:00
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typedef atomic<int_fast32_t> atomic_int_fast32_t;
|
2010-12-06 23:10:08 +00:00
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typedef atomic<uint_fast32_t> atomic_uint_fast32_t;
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typedef atomic<int_fast64_t> atomic_int_fast64_t;
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typedef atomic<uint_fast64_t> atomic_uint_fast64_t;
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|
2016-06-30 15:28:38 +00:00
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typedef atomic<int8_t> atomic_int8_t;
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typedef atomic<uint8_t> atomic_uint8_t;
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typedef atomic<int16_t> atomic_int16_t;
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typedef atomic<uint16_t> atomic_uint16_t;
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typedef atomic<int32_t> atomic_int32_t;
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typedef atomic<uint32_t> atomic_uint32_t;
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typedef atomic<int64_t> atomic_int64_t;
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typedef atomic<uint64_t> atomic_uint64_t;
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2010-12-06 23:10:08 +00:00
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typedef atomic<intptr_t> atomic_intptr_t;
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typedef atomic<uintptr_t> atomic_uintptr_t;
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typedef atomic<size_t> atomic_size_t;
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typedef atomic<ptrdiff_t> atomic_ptrdiff_t;
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typedef atomic<intmax_t> atomic_intmax_t;
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typedef atomic<uintmax_t> atomic_uintmax_t;
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2023-11-22 09:54:40 -10:00
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typedef see-below atomic_signed_lock_free; // since C++20
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typedef see-below atomic_unsigned_lock_free; // since C++20
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2020-06-01 14:30:13 -07:00
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// flag type and operations
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typedef struct atomic_flag
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{
|
2021-06-06 19:02:20 +03:00
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atomic_flag() noexcept = default; // until C++20
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constexpr atomic_flag() noexcept; // since C++20
|
2020-06-01 14:30:13 -07:00
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atomic_flag(const atomic_flag&) = delete;
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atomic_flag& operator=(const atomic_flag&) = delete;
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atomic_flag& operator=(const atomic_flag&) volatile = delete;
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bool test(memory_order m = memory_order_seq_cst) volatile noexcept;
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bool test(memory_order m = memory_order_seq_cst) noexcept;
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bool test_and_set(memory_order m = memory_order_seq_cst) volatile noexcept;
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bool test_and_set(memory_order m = memory_order_seq_cst) noexcept;
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void clear(memory_order m = memory_order_seq_cst) volatile noexcept;
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void clear(memory_order m = memory_order_seq_cst) noexcept;
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|
2024-07-31 16:53:09 -05:00
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|
void wait(bool, memory_order = memory_order::seq_cst) const volatile noexcept; // since C++20
|
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|
|
void wait(bool, memory_order = memory_order::seq_cst) const noexcept; // since C++20
|
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|
|
void notify_one() volatile noexcept; // since C++20
|
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|
|
void notify_one() noexcept; // since C++20
|
|
|
|
|
void notify_all() volatile noexcept; // since C++20
|
|
|
|
|
void notify_all() noexcept; // since C++20
|
2020-06-01 14:30:13 -07:00
|
|
|
} atomic_flag;
|
|
|
|
|
|
|
|
|
|
bool atomic_flag_test(volatile atomic_flag* obj) noexcept;
|
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|
|
|
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;
|
|
|
|
|
|
2024-07-31 16:53:09 -05:00
|
|
|
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
|
2020-06-01 14:30:13 -07:00
|
|
|
|
2010-12-06 23:10:08 +00:00
|
|
|
// fences
|
|
|
|
|
|
2012-04-11 20:14:21 +00:00
|
|
|
void atomic_thread_fence(memory_order m) noexcept;
|
|
|
|
|
void atomic_signal_fence(memory_order m) noexcept;
|
2010-12-06 23:10:08 +00:00
|
|
|
|
2020-06-01 14:30:13 -07:00
|
|
|
// deprecated
|
|
|
|
|
|
|
|
|
|
template <class T>
|
2021-06-06 14:48:08 +02:00
|
|
|
void atomic_init(volatile atomic<T>* obj, atomic<T>::value_type desr) noexcept;
|
2020-06-01 14:30:13 -07:00
|
|
|
|
|
|
|
|
template <class T>
|
2021-06-06 14:48:08 +02:00
|
|
|
void atomic_init(atomic<T>* obj, atomic<T>::value_type desr) noexcept;
|
2020-06-01 14:30:13 -07:00
|
|
|
|
|
|
|
|
#define ATOMIC_VAR_INIT(value) see below
|
|
|
|
|
|
|
|
|
|
#define ATOMIC_FLAG_INIT see below
|
|
|
|
|
|
2010-12-06 23:10:08 +00:00
|
|
|
} // std
|
|
|
|
|
|
|
|
|
|
*/
|
|
|
|
|
|
2024-12-21 13:01:48 +01:00
|
|
|
#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
|
|
|
|
|
# include <__cxx03/atomic>
|
|
|
|
|
#else
|
2024-12-10 16:02:12 +01:00
|
|
|
# include <__config>
|
|
|
|
|
|
2025-01-17 14:22:40 -05:00
|
|
|
# if defined(_LIBCPP_STDATOMIC_H) || defined(kill_dependency) || defined(atomic_load)
|
|
|
|
|
# define _LIBCPP_STDATOMIC_H_HAS_DEFINITELY_BEEN_INCLUDED 1
|
|
|
|
|
# else
|
|
|
|
|
# define _LIBCPP_STDATOMIC_H_HAS_DEFINITELY_BEEN_INCLUDED 0
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
# if _LIBCPP_STD_VER < 23 && _LIBCPP_STDATOMIC_H_HAS_DEFINITELY_BEEN_INCLUDED
|
|
|
|
|
# error <atomic> is incompatible with <stdatomic.h> before C++23. Please compile with -std=c++23.
|
|
|
|
|
# endif
|
|
|
|
|
|
2024-12-10 16:02:12 +01:00
|
|
|
# include <__atomic/aliases.h>
|
|
|
|
|
# include <__atomic/atomic.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/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
|
|
|
|
|
|
|
|
|
|
# if !_LIBCPP_HAS_ATOMIC_HEADER
|
|
|
|
|
# error <atomic> is not implemented
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
|
|
|
|
|
# include <cmath>
|
|
|
|
|
# include <compare>
|
|
|
|
|
# include <cstddef>
|
|
|
|
|
# include <cstdlib>
|
|
|
|
|
# include <cstring>
|
|
|
|
|
# include <type_traits>
|
|
|
|
|
# endif
|
2024-12-21 13:01:48 +01:00
|
|
|
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
|
2022-09-02 17:53:28 +02:00
|
|
|
|
2021-04-20 12:03:32 -04:00
|
|
|
#endif // _LIBCPP_ATOMIC
|
