forked from KolibriOS/kolibrios
1253 lines
37 KiB
C++
1253 lines
37 KiB
C++
// -*- C++ -*- header.
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// Copyright (C) 2008-2015 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file include/atomic
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* This is a Standard C++ Library header.
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*/
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// Based on "C++ Atomic Types and Operations" by Hans Boehm and Lawrence Crowl.
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// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2427.html
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#ifndef _GLIBCXX_ATOMIC
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#define _GLIBCXX_ATOMIC 1
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#pragma GCC system_header
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#if __cplusplus < 201103L
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# include <bits/c++0x_warning.h>
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#else
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#include <bits/atomic_base.h>
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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/**
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* @addtogroup atomics
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* @{
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*/
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template<typename _Tp>
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struct atomic;
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/// atomic<bool>
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// NB: No operators or fetch-operations for this type.
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template<>
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struct atomic<bool>
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{
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private:
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__atomic_base<bool> _M_base;
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public:
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atomic() noexcept = default;
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~atomic() noexcept = default;
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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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constexpr atomic(bool __i) noexcept : _M_base(__i) { }
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bool
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operator=(bool __i) noexcept
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{ return _M_base.operator=(__i); }
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bool
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operator=(bool __i) volatile noexcept
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{ return _M_base.operator=(__i); }
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operator bool() const noexcept
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{ return _M_base.load(); }
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operator bool() const volatile noexcept
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{ return _M_base.load(); }
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bool
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is_lock_free() const noexcept { return _M_base.is_lock_free(); }
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bool
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is_lock_free() const volatile noexcept { return _M_base.is_lock_free(); }
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void
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store(bool __i, memory_order __m = memory_order_seq_cst) noexcept
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{ _M_base.store(__i, __m); }
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void
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store(bool __i, memory_order __m = memory_order_seq_cst) volatile noexcept
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{ _M_base.store(__i, __m); }
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bool
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load(memory_order __m = memory_order_seq_cst) const noexcept
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{ return _M_base.load(__m); }
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bool
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load(memory_order __m = memory_order_seq_cst) const volatile noexcept
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{ return _M_base.load(__m); }
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bool
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exchange(bool __i, memory_order __m = memory_order_seq_cst) noexcept
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{ return _M_base.exchange(__i, __m); }
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bool
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exchange(bool __i,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{ return _M_base.exchange(__i, __m); }
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bool
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compare_exchange_weak(bool& __i1, bool __i2, memory_order __m1,
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memory_order __m2) noexcept
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{ return _M_base.compare_exchange_weak(__i1, __i2, __m1, __m2); }
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bool
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compare_exchange_weak(bool& __i1, bool __i2, memory_order __m1,
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memory_order __m2) volatile noexcept
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{ return _M_base.compare_exchange_weak(__i1, __i2, __m1, __m2); }
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bool
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compare_exchange_weak(bool& __i1, bool __i2,
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memory_order __m = memory_order_seq_cst) noexcept
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{ return _M_base.compare_exchange_weak(__i1, __i2, __m); }
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bool
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compare_exchange_weak(bool& __i1, bool __i2,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{ return _M_base.compare_exchange_weak(__i1, __i2, __m); }
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bool
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compare_exchange_strong(bool& __i1, bool __i2, memory_order __m1,
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memory_order __m2) noexcept
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{ return _M_base.compare_exchange_strong(__i1, __i2, __m1, __m2); }
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bool
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compare_exchange_strong(bool& __i1, bool __i2, memory_order __m1,
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memory_order __m2) volatile noexcept
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{ return _M_base.compare_exchange_strong(__i1, __i2, __m1, __m2); }
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bool
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compare_exchange_strong(bool& __i1, bool __i2,
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memory_order __m = memory_order_seq_cst) noexcept
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{ return _M_base.compare_exchange_strong(__i1, __i2, __m); }
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bool
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compare_exchange_strong(bool& __i1, bool __i2,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{ return _M_base.compare_exchange_strong(__i1, __i2, __m); }
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};
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/**
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* @brief Generic atomic type, primary class template.
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*
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* @tparam _Tp Type to be made atomic, must be trivally copyable.
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*/
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template<typename _Tp>
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struct atomic
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{
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private:
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// Align 1/2/4/8/16-byte types to at least their size.
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static constexpr int _S_min_alignment
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= (sizeof(_Tp) & (sizeof(_Tp) - 1)) || sizeof(_Tp) > 16
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? 0 : sizeof(_Tp);
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static constexpr int _S_alignment
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= _S_min_alignment > alignof(_Tp) ? _S_min_alignment : alignof(_Tp);
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alignas(_S_alignment) _Tp _M_i;
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static_assert(__is_trivially_copyable(_Tp),
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"std::atomic requires a trivially copyable type");
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static_assert(sizeof(_Tp) > 0,
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"Incomplete or zero-sized types are not supported");
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public:
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atomic() noexcept = default;
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~atomic() noexcept = default;
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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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constexpr atomic(_Tp __i) noexcept : _M_i(__i) { }
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operator _Tp() const noexcept
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{ return load(); }
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operator _Tp() const volatile noexcept
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{ return load(); }
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_Tp
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operator=(_Tp __i) noexcept
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{ store(__i); return __i; }
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_Tp
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operator=(_Tp __i) volatile noexcept
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{ store(__i); return __i; }
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bool
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is_lock_free() const noexcept
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{
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// Produce a fake, minimally aligned pointer.
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return __atomic_is_lock_free(sizeof(_M_i),
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reinterpret_cast<void *>(-__alignof(_M_i)));
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}
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bool
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is_lock_free() const volatile noexcept
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{
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// Produce a fake, minimally aligned pointer.
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return __atomic_is_lock_free(sizeof(_M_i),
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reinterpret_cast<void *>(-__alignof(_M_i)));
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}
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void
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store(_Tp __i, memory_order __m = memory_order_seq_cst) noexcept
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{ __atomic_store(&_M_i, &__i, __m); }
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void
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store(_Tp __i, memory_order __m = memory_order_seq_cst) volatile noexcept
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{ __atomic_store(&_M_i, &__i, __m); }
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_Tp
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load(memory_order __m = memory_order_seq_cst) const noexcept
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{
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_Tp tmp;
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__atomic_load(&_M_i, &tmp, __m);
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return tmp;
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}
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_Tp
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load(memory_order __m = memory_order_seq_cst) const volatile noexcept
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{
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_Tp tmp;
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__atomic_load(&_M_i, &tmp, __m);
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return tmp;
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}
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_Tp
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exchange(_Tp __i, memory_order __m = memory_order_seq_cst) noexcept
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{
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_Tp tmp;
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__atomic_exchange(&_M_i, &__i, &tmp, __m);
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return tmp;
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}
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_Tp
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exchange(_Tp __i,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{
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_Tp tmp;
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__atomic_exchange(&_M_i, &__i, &tmp, __m);
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return tmp;
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}
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bool
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compare_exchange_weak(_Tp& __e, _Tp __i, memory_order __s,
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memory_order __f) noexcept
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{
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return __atomic_compare_exchange(&_M_i, &__e, &__i, true, __s, __f);
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}
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bool
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compare_exchange_weak(_Tp& __e, _Tp __i, memory_order __s,
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memory_order __f) volatile noexcept
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{
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return __atomic_compare_exchange(&_M_i, &__e, &__i, true, __s, __f);
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}
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bool
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compare_exchange_weak(_Tp& __e, _Tp __i,
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memory_order __m = memory_order_seq_cst) noexcept
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{ return compare_exchange_weak(__e, __i, __m,
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__cmpexch_failure_order(__m)); }
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bool
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compare_exchange_weak(_Tp& __e, _Tp __i,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{ return compare_exchange_weak(__e, __i, __m,
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__cmpexch_failure_order(__m)); }
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bool
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compare_exchange_strong(_Tp& __e, _Tp __i, memory_order __s,
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memory_order __f) noexcept
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{
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return __atomic_compare_exchange(&_M_i, &__e, &__i, false, __s, __f);
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}
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bool
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compare_exchange_strong(_Tp& __e, _Tp __i, memory_order __s,
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memory_order __f) volatile noexcept
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{
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return __atomic_compare_exchange(&_M_i, &__e, &__i, false, __s, __f);
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}
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bool
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compare_exchange_strong(_Tp& __e, _Tp __i,
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memory_order __m = memory_order_seq_cst) noexcept
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{ return compare_exchange_strong(__e, __i, __m,
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__cmpexch_failure_order(__m)); }
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bool
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compare_exchange_strong(_Tp& __e, _Tp __i,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{ return compare_exchange_strong(__e, __i, __m,
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__cmpexch_failure_order(__m)); }
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};
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/// Partial specialization for pointer types.
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template<typename _Tp>
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struct atomic<_Tp*>
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{
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typedef _Tp* __pointer_type;
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typedef __atomic_base<_Tp*> __base_type;
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__base_type _M_b;
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atomic() noexcept = default;
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~atomic() noexcept = default;
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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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constexpr atomic(__pointer_type __p) noexcept : _M_b(__p) { }
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operator __pointer_type() const noexcept
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{ return __pointer_type(_M_b); }
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operator __pointer_type() const volatile noexcept
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{ return __pointer_type(_M_b); }
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__pointer_type
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operator=(__pointer_type __p) noexcept
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{ return _M_b.operator=(__p); }
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__pointer_type
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operator=(__pointer_type __p) volatile noexcept
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{ return _M_b.operator=(__p); }
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__pointer_type
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operator++(int) noexcept
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{ return _M_b++; }
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__pointer_type
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operator++(int) volatile noexcept
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{ return _M_b++; }
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__pointer_type
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operator--(int) noexcept
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{ return _M_b--; }
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__pointer_type
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operator--(int) volatile noexcept
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{ return _M_b--; }
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__pointer_type
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operator++() noexcept
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{ return ++_M_b; }
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__pointer_type
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operator++() volatile noexcept
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{ return ++_M_b; }
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__pointer_type
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operator--() noexcept
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{ return --_M_b; }
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__pointer_type
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operator--() volatile noexcept
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{ return --_M_b; }
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__pointer_type
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operator+=(ptrdiff_t __d) noexcept
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{ return _M_b.operator+=(__d); }
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__pointer_type
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operator+=(ptrdiff_t __d) volatile noexcept
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{ return _M_b.operator+=(__d); }
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__pointer_type
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operator-=(ptrdiff_t __d) noexcept
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{ return _M_b.operator-=(__d); }
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__pointer_type
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operator-=(ptrdiff_t __d) volatile noexcept
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{ return _M_b.operator-=(__d); }
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bool
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is_lock_free() const noexcept
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{ return _M_b.is_lock_free(); }
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bool
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is_lock_free() const volatile noexcept
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{ return _M_b.is_lock_free(); }
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void
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store(__pointer_type __p,
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memory_order __m = memory_order_seq_cst) noexcept
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{ return _M_b.store(__p, __m); }
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void
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store(__pointer_type __p,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{ return _M_b.store(__p, __m); }
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__pointer_type
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load(memory_order __m = memory_order_seq_cst) const noexcept
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{ return _M_b.load(__m); }
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__pointer_type
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load(memory_order __m = memory_order_seq_cst) const volatile noexcept
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{ return _M_b.load(__m); }
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__pointer_type
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exchange(__pointer_type __p,
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memory_order __m = memory_order_seq_cst) noexcept
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{ return _M_b.exchange(__p, __m); }
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__pointer_type
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exchange(__pointer_type __p,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{ return _M_b.exchange(__p, __m); }
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bool
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compare_exchange_weak(__pointer_type& __p1, __pointer_type __p2,
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memory_order __m1, memory_order __m2) noexcept
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{ return _M_b.compare_exchange_strong(__p1, __p2, __m1, __m2); }
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bool
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compare_exchange_weak(__pointer_type& __p1, __pointer_type __p2,
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memory_order __m1,
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memory_order __m2) volatile noexcept
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{ return _M_b.compare_exchange_strong(__p1, __p2, __m1, __m2); }
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bool
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compare_exchange_weak(__pointer_type& __p1, __pointer_type __p2,
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memory_order __m = memory_order_seq_cst) noexcept
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{
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return compare_exchange_weak(__p1, __p2, __m,
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__cmpexch_failure_order(__m));
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}
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bool
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compare_exchange_weak(__pointer_type& __p1, __pointer_type __p2,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{
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return compare_exchange_weak(__p1, __p2, __m,
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__cmpexch_failure_order(__m));
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}
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bool
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compare_exchange_strong(__pointer_type& __p1, __pointer_type __p2,
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memory_order __m1, memory_order __m2) noexcept
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{ return _M_b.compare_exchange_strong(__p1, __p2, __m1, __m2); }
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bool
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compare_exchange_strong(__pointer_type& __p1, __pointer_type __p2,
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memory_order __m1,
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memory_order __m2) volatile noexcept
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{ return _M_b.compare_exchange_strong(__p1, __p2, __m1, __m2); }
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bool
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compare_exchange_strong(__pointer_type& __p1, __pointer_type __p2,
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memory_order __m = memory_order_seq_cst) noexcept
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{
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return _M_b.compare_exchange_strong(__p1, __p2, __m,
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__cmpexch_failure_order(__m));
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}
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bool
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compare_exchange_strong(__pointer_type& __p1, __pointer_type __p2,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{
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return _M_b.compare_exchange_strong(__p1, __p2, __m,
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__cmpexch_failure_order(__m));
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}
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__pointer_type
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fetch_add(ptrdiff_t __d,
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memory_order __m = memory_order_seq_cst) noexcept
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{ return _M_b.fetch_add(__d, __m); }
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__pointer_type
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fetch_add(ptrdiff_t __d,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{ return _M_b.fetch_add(__d, __m); }
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__pointer_type
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fetch_sub(ptrdiff_t __d,
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memory_order __m = memory_order_seq_cst) noexcept
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{ return _M_b.fetch_sub(__d, __m); }
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__pointer_type
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fetch_sub(ptrdiff_t __d,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{ return _M_b.fetch_sub(__d, __m); }
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};
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/// Explicit specialization for char.
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template<>
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struct atomic<char> : __atomic_base<char>
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{
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typedef char __integral_type;
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typedef __atomic_base<char> __base_type;
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|
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atomic() noexcept = default;
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~atomic() noexcept = default;
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atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for signed char.
|
|
template<>
|
|
struct atomic<signed char> : __atomic_base<signed char>
|
|
{
|
|
typedef signed char __integral_type;
|
|
typedef __atomic_base<signed char> __base_type;
|
|
|
|
atomic() noexcept= default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for unsigned char.
|
|
template<>
|
|
struct atomic<unsigned char> : __atomic_base<unsigned char>
|
|
{
|
|
typedef unsigned char __integral_type;
|
|
typedef __atomic_base<unsigned char> __base_type;
|
|
|
|
atomic() noexcept= default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for short.
|
|
template<>
|
|
struct atomic<short> : __atomic_base<short>
|
|
{
|
|
typedef short __integral_type;
|
|
typedef __atomic_base<short> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for unsigned short.
|
|
template<>
|
|
struct atomic<unsigned short> : __atomic_base<unsigned short>
|
|
{
|
|
typedef unsigned short __integral_type;
|
|
typedef __atomic_base<unsigned short> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for int.
|
|
template<>
|
|
struct atomic<int> : __atomic_base<int>
|
|
{
|
|
typedef int __integral_type;
|
|
typedef __atomic_base<int> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for unsigned int.
|
|
template<>
|
|
struct atomic<unsigned int> : __atomic_base<unsigned int>
|
|
{
|
|
typedef unsigned int __integral_type;
|
|
typedef __atomic_base<unsigned int> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for long.
|
|
template<>
|
|
struct atomic<long> : __atomic_base<long>
|
|
{
|
|
typedef long __integral_type;
|
|
typedef __atomic_base<long> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for unsigned long.
|
|
template<>
|
|
struct atomic<unsigned long> : __atomic_base<unsigned long>
|
|
{
|
|
typedef unsigned long __integral_type;
|
|
typedef __atomic_base<unsigned long> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for long long.
|
|
template<>
|
|
struct atomic<long long> : __atomic_base<long long>
|
|
{
|
|
typedef long long __integral_type;
|
|
typedef __atomic_base<long long> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for unsigned long long.
|
|
template<>
|
|
struct atomic<unsigned long long> : __atomic_base<unsigned long long>
|
|
{
|
|
typedef unsigned long long __integral_type;
|
|
typedef __atomic_base<unsigned long long> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for wchar_t.
|
|
template<>
|
|
struct atomic<wchar_t> : __atomic_base<wchar_t>
|
|
{
|
|
typedef wchar_t __integral_type;
|
|
typedef __atomic_base<wchar_t> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for char16_t.
|
|
template<>
|
|
struct atomic<char16_t> : __atomic_base<char16_t>
|
|
{
|
|
typedef char16_t __integral_type;
|
|
typedef __atomic_base<char16_t> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
/// Explicit specialization for char32_t.
|
|
template<>
|
|
struct atomic<char32_t> : __atomic_base<char32_t>
|
|
{
|
|
typedef char32_t __integral_type;
|
|
typedef __atomic_base<char32_t> __base_type;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { }
|
|
|
|
using __base_type::operator __integral_type;
|
|
using __base_type::operator=;
|
|
};
|
|
|
|
|
|
/// atomic_bool
|
|
typedef atomic<bool> atomic_bool;
|
|
|
|
/// atomic_char
|
|
typedef atomic<char> atomic_char;
|
|
|
|
/// atomic_schar
|
|
typedef atomic<signed char> atomic_schar;
|
|
|
|
/// atomic_uchar
|
|
typedef atomic<unsigned char> atomic_uchar;
|
|
|
|
/// atomic_short
|
|
typedef atomic<short> atomic_short;
|
|
|
|
/// atomic_ushort
|
|
typedef atomic<unsigned short> atomic_ushort;
|
|
|
|
/// atomic_int
|
|
typedef atomic<int> atomic_int;
|
|
|
|
/// atomic_uint
|
|
typedef atomic<unsigned int> atomic_uint;
|
|
|
|
/// atomic_long
|
|
typedef atomic<long> atomic_long;
|
|
|
|
/// atomic_ulong
|
|
typedef atomic<unsigned long> atomic_ulong;
|
|
|
|
/// atomic_llong
|
|
typedef atomic<long long> atomic_llong;
|
|
|
|
/// atomic_ullong
|
|
typedef atomic<unsigned long long> atomic_ullong;
|
|
|
|
/// atomic_wchar_t
|
|
typedef atomic<wchar_t> atomic_wchar_t;
|
|
|
|
/// atomic_char16_t
|
|
typedef atomic<char16_t> atomic_char16_t;
|
|
|
|
/// atomic_char32_t
|
|
typedef atomic<char32_t> atomic_char32_t;
|
|
|
|
|
|
/// atomic_int_least8_t
|
|
typedef atomic<int_least8_t> atomic_int_least8_t;
|
|
|
|
/// atomic_uint_least8_t
|
|
typedef atomic<uint_least8_t> atomic_uint_least8_t;
|
|
|
|
/// atomic_int_least16_t
|
|
typedef atomic<int_least16_t> atomic_int_least16_t;
|
|
|
|
/// atomic_uint_least16_t
|
|
typedef atomic<uint_least16_t> atomic_uint_least16_t;
|
|
|
|
/// atomic_int_least32_t
|
|
typedef atomic<int_least32_t> atomic_int_least32_t;
|
|
|
|
/// atomic_uint_least32_t
|
|
typedef atomic<uint_least32_t> atomic_uint_least32_t;
|
|
|
|
/// atomic_int_least64_t
|
|
typedef atomic<int_least64_t> atomic_int_least64_t;
|
|
|
|
/// atomic_uint_least64_t
|
|
typedef atomic<uint_least64_t> atomic_uint_least64_t;
|
|
|
|
|
|
/// atomic_int_fast8_t
|
|
typedef atomic<int_fast8_t> atomic_int_fast8_t;
|
|
|
|
/// atomic_uint_fast8_t
|
|
typedef atomic<uint_fast8_t> atomic_uint_fast8_t;
|
|
|
|
/// atomic_int_fast16_t
|
|
typedef atomic<int_fast16_t> atomic_int_fast16_t;
|
|
|
|
/// atomic_uint_fast16_t
|
|
typedef atomic<uint_fast16_t> atomic_uint_fast16_t;
|
|
|
|
/// atomic_int_fast32_t
|
|
typedef atomic<int_fast32_t> atomic_int_fast32_t;
|
|
|
|
/// atomic_uint_fast32_t
|
|
typedef atomic<uint_fast32_t> atomic_uint_fast32_t;
|
|
|
|
/// atomic_int_fast64_t
|
|
typedef atomic<int_fast64_t> atomic_int_fast64_t;
|
|
|
|
/// atomic_uint_fast64_t
|
|
typedef atomic<uint_fast64_t> atomic_uint_fast64_t;
|
|
|
|
|
|
/// atomic_intptr_t
|
|
typedef atomic<intptr_t> atomic_intptr_t;
|
|
|
|
/// atomic_uintptr_t
|
|
typedef atomic<uintptr_t> atomic_uintptr_t;
|
|
|
|
/// atomic_size_t
|
|
typedef atomic<size_t> atomic_size_t;
|
|
|
|
/// atomic_intmax_t
|
|
typedef atomic<intmax_t> atomic_intmax_t;
|
|
|
|
/// atomic_uintmax_t
|
|
typedef atomic<uintmax_t> atomic_uintmax_t;
|
|
|
|
/// atomic_ptrdiff_t
|
|
typedef atomic<ptrdiff_t> atomic_ptrdiff_t;
|
|
|
|
|
|
// Function definitions, atomic_flag operations.
|
|
inline bool
|
|
atomic_flag_test_and_set_explicit(atomic_flag* __a,
|
|
memory_order __m) noexcept
|
|
{ return __a->test_and_set(__m); }
|
|
|
|
inline bool
|
|
atomic_flag_test_and_set_explicit(volatile atomic_flag* __a,
|
|
memory_order __m) noexcept
|
|
{ return __a->test_and_set(__m); }
|
|
|
|
inline void
|
|
atomic_flag_clear_explicit(atomic_flag* __a, memory_order __m) noexcept
|
|
{ __a->clear(__m); }
|
|
|
|
inline void
|
|
atomic_flag_clear_explicit(volatile atomic_flag* __a,
|
|
memory_order __m) noexcept
|
|
{ __a->clear(__m); }
|
|
|
|
inline bool
|
|
atomic_flag_test_and_set(atomic_flag* __a) noexcept
|
|
{ return atomic_flag_test_and_set_explicit(__a, memory_order_seq_cst); }
|
|
|
|
inline bool
|
|
atomic_flag_test_and_set(volatile atomic_flag* __a) noexcept
|
|
{ return atomic_flag_test_and_set_explicit(__a, memory_order_seq_cst); }
|
|
|
|
inline void
|
|
atomic_flag_clear(atomic_flag* __a) noexcept
|
|
{ atomic_flag_clear_explicit(__a, memory_order_seq_cst); }
|
|
|
|
inline void
|
|
atomic_flag_clear(volatile atomic_flag* __a) noexcept
|
|
{ atomic_flag_clear_explicit(__a, memory_order_seq_cst); }
|
|
|
|
|
|
// Function templates generally applicable to atomic types.
|
|
template<typename _ITp>
|
|
inline bool
|
|
atomic_is_lock_free(const atomic<_ITp>* __a) noexcept
|
|
{ return __a->is_lock_free(); }
|
|
|
|
template<typename _ITp>
|
|
inline bool
|
|
atomic_is_lock_free(const volatile atomic<_ITp>* __a) noexcept
|
|
{ return __a->is_lock_free(); }
|
|
|
|
template<typename _ITp>
|
|
inline void
|
|
atomic_init(atomic<_ITp>* __a, _ITp __i) noexcept
|
|
{ __a->store(__i, memory_order_relaxed); }
|
|
|
|
template<typename _ITp>
|
|
inline void
|
|
atomic_init(volatile atomic<_ITp>* __a, _ITp __i) noexcept
|
|
{ __a->store(__i, memory_order_relaxed); }
|
|
|
|
template<typename _ITp>
|
|
inline void
|
|
atomic_store_explicit(atomic<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ __a->store(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline void
|
|
atomic_store_explicit(volatile atomic<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ __a->store(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_load_explicit(const atomic<_ITp>* __a, memory_order __m) noexcept
|
|
{ return __a->load(__m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_load_explicit(const volatile atomic<_ITp>* __a,
|
|
memory_order __m) noexcept
|
|
{ return __a->load(__m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_exchange_explicit(atomic<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->exchange(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_exchange_explicit(volatile atomic<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->exchange(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline bool
|
|
atomic_compare_exchange_weak_explicit(atomic<_ITp>* __a,
|
|
_ITp* __i1, _ITp __i2,
|
|
memory_order __m1,
|
|
memory_order __m2) noexcept
|
|
{ return __a->compare_exchange_weak(*__i1, __i2, __m1, __m2); }
|
|
|
|
template<typename _ITp>
|
|
inline bool
|
|
atomic_compare_exchange_weak_explicit(volatile atomic<_ITp>* __a,
|
|
_ITp* __i1, _ITp __i2,
|
|
memory_order __m1,
|
|
memory_order __m2) noexcept
|
|
{ return __a->compare_exchange_weak(*__i1, __i2, __m1, __m2); }
|
|
|
|
template<typename _ITp>
|
|
inline bool
|
|
atomic_compare_exchange_strong_explicit(atomic<_ITp>* __a,
|
|
_ITp* __i1, _ITp __i2,
|
|
memory_order __m1,
|
|
memory_order __m2) noexcept
|
|
{ return __a->compare_exchange_strong(*__i1, __i2, __m1, __m2); }
|
|
|
|
template<typename _ITp>
|
|
inline bool
|
|
atomic_compare_exchange_strong_explicit(volatile atomic<_ITp>* __a,
|
|
_ITp* __i1, _ITp __i2,
|
|
memory_order __m1,
|
|
memory_order __m2) noexcept
|
|
{ return __a->compare_exchange_strong(*__i1, __i2, __m1, __m2); }
|
|
|
|
|
|
template<typename _ITp>
|
|
inline void
|
|
atomic_store(atomic<_ITp>* __a, _ITp __i) noexcept
|
|
{ atomic_store_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline void
|
|
atomic_store(volatile atomic<_ITp>* __a, _ITp __i) noexcept
|
|
{ atomic_store_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_load(const atomic<_ITp>* __a) noexcept
|
|
{ return atomic_load_explicit(__a, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_load(const volatile atomic<_ITp>* __a) noexcept
|
|
{ return atomic_load_explicit(__a, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_exchange(atomic<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_exchange_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_exchange(volatile atomic<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_exchange_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
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template<typename _ITp>
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|
inline bool
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atomic_compare_exchange_weak(atomic<_ITp>* __a,
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_ITp* __i1, _ITp __i2) noexcept
|
|
{
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|
return atomic_compare_exchange_weak_explicit(__a, __i1, __i2,
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|
memory_order_seq_cst,
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|
memory_order_seq_cst);
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|
}
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|
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template<typename _ITp>
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|
inline bool
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atomic_compare_exchange_weak(volatile atomic<_ITp>* __a,
|
|
_ITp* __i1, _ITp __i2) noexcept
|
|
{
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|
return atomic_compare_exchange_weak_explicit(__a, __i1, __i2,
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|
memory_order_seq_cst,
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|
memory_order_seq_cst);
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|
}
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|
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|
template<typename _ITp>
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|
inline bool
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atomic_compare_exchange_strong(atomic<_ITp>* __a,
|
|
_ITp* __i1, _ITp __i2) noexcept
|
|
{
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return atomic_compare_exchange_strong_explicit(__a, __i1, __i2,
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|
memory_order_seq_cst,
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|
memory_order_seq_cst);
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|
}
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|
|
|
template<typename _ITp>
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|
inline bool
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|
atomic_compare_exchange_strong(volatile atomic<_ITp>* __a,
|
|
_ITp* __i1, _ITp __i2) noexcept
|
|
{
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|
return atomic_compare_exchange_strong_explicit(__a, __i1, __i2,
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|
memory_order_seq_cst,
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|
memory_order_seq_cst);
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|
}
|
|
|
|
// Function templates for atomic_integral operations only, using
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// __atomic_base. Template argument should be constricted to
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|
// intergral types as specified in the standard, excluding address
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|
// types.
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|
template<typename _ITp>
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|
inline _ITp
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|
atomic_fetch_add_explicit(__atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_add(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
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|
atomic_fetch_add_explicit(volatile __atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_add(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_sub_explicit(__atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_sub(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_sub_explicit(volatile __atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_sub(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_and_explicit(__atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_and(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_and_explicit(volatile __atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_and(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_or_explicit(__atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_or(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_or_explicit(volatile __atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_or(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_xor_explicit(__atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_xor(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_xor_explicit(volatile __atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_xor(__i, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_add(__atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_add_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_add(volatile __atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_add_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_sub(__atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_sub_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_sub(volatile __atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_sub_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_and(__atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_and_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_and(volatile __atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_and_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_or(__atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_or_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_or(volatile __atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_or_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_xor(__atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_xor_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp
|
|
atomic_fetch_xor(volatile __atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_xor_explicit(__a, __i, memory_order_seq_cst); }
|
|
|
|
|
|
// Partial specializations for pointers.
|
|
template<typename _ITp>
|
|
inline _ITp*
|
|
atomic_fetch_add_explicit(atomic<_ITp*>* __a, ptrdiff_t __d,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_add(__d, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp*
|
|
atomic_fetch_add_explicit(volatile atomic<_ITp*>* __a, ptrdiff_t __d,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_add(__d, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp*
|
|
atomic_fetch_add(volatile atomic<_ITp*>* __a, ptrdiff_t __d) noexcept
|
|
{ return __a->fetch_add(__d); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp*
|
|
atomic_fetch_add(atomic<_ITp*>* __a, ptrdiff_t __d) noexcept
|
|
{ return __a->fetch_add(__d); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp*
|
|
atomic_fetch_sub_explicit(volatile atomic<_ITp*>* __a,
|
|
ptrdiff_t __d, memory_order __m) noexcept
|
|
{ return __a->fetch_sub(__d, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp*
|
|
atomic_fetch_sub_explicit(atomic<_ITp*>* __a, ptrdiff_t __d,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_sub(__d, __m); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp*
|
|
atomic_fetch_sub(volatile atomic<_ITp*>* __a, ptrdiff_t __d) noexcept
|
|
{ return __a->fetch_sub(__d); }
|
|
|
|
template<typename _ITp>
|
|
inline _ITp*
|
|
atomic_fetch_sub(atomic<_ITp*>* __a, ptrdiff_t __d) noexcept
|
|
{ return __a->fetch_sub(__d); }
|
|
// @} group atomics
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace
|
|
|
|
#endif // C++11
|
|
|
|
#endif // _GLIBCXX_ATOMIC
|