1904 lines
58 KiB
C++
1904 lines
58 KiB
C++
// -*- C++ -*- header.
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// Copyright (C) 2008-2017 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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// ????????????????????????????????????????????????????????????????????
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//
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// This is a copy of the libstdc++ header, with the trivial modification
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// of ignoring the c++config.h include. If and when the top-level build is
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// fixed so that target libraries can be built using the newly built, we can
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// delete this file.
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//
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// ????????????????????????????????????????????????????????????????????
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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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#define __libitm_always_inline __attribute__((always_inline))
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// #pragma GCC system_header
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// #ifndef __GXX_EXPERIMENTAL_CXX0X__
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// # include <bits/c++0x_warning.h>
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// #endif
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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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* @defgroup atomics Atomics
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*
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* Components for performing atomic operations.
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* @{
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*/
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/// Enumeration for memory_order
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typedef enum memory_order
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{
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memory_order_relaxed,
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memory_order_consume,
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memory_order_acquire,
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memory_order_release,
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memory_order_acq_rel,
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memory_order_seq_cst
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} memory_order;
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inline __libitm_always_inline memory_order
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__calculate_memory_order(memory_order __m) noexcept
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{
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const bool __cond1 = __m == memory_order_release;
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const bool __cond2 = __m == memory_order_acq_rel;
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memory_order __mo1(__cond1 ? memory_order_relaxed : __m);
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memory_order __mo2(__cond2 ? memory_order_acquire : __mo1);
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return __mo2;
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}
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inline __libitm_always_inline void
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atomic_thread_fence(memory_order __m) noexcept
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{
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__atomic_thread_fence (__m);
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}
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inline __libitm_always_inline void
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atomic_signal_fence(memory_order __m) noexcept
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{
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__atomic_thread_fence (__m);
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}
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/// kill_dependency
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template<typename _Tp>
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inline _Tp
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kill_dependency(_Tp __y) noexcept
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{
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_Tp __ret(__y);
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return __ret;
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}
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/// Lock-free Property
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#define ATOMIC_BOOL_LOCK_FREE __GCC_ATOMIC_BOOL_LOCK_FREE
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#define ATOMIC_CHAR_LOCK_FREE __GCC_ATOMIC_CHAR_LOCK_FREE
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#define ATOMIC_WCHAR_T_LOCK_FREE __GCC_ATOMIC_WCHAR_T_LOCK_FREE
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#define ATOMIC_CHAR16_T_LOCK_FREE __GCC_ATOMIC_CHAR16_T_LOCK_FREE
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#define ATOMIC_CHAR32_T_LOCK_FREE __GCC_ATOMIC_CHAR32_T_LOCK_FREE
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#define ATOMIC_SHORT_LOCK_FREE __GCC_ATOMIC_SHORT_LOCK_FREE
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#define ATOMIC_INT_LOCK_FREE __GCC_ATOMIC_INT_LOCK_FREE
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#define ATOMIC_LONG_LOCK_FREE __GCC_ATOMIC_LONG_LOCK_FREE
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#define ATOMIC_LLONG_LOCK_FREE __GCC_ATOMIC_LLONG_LOCK_FREE
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#define ATOMIC_POINTER_LOCK_FREE __GCC_ATOMIC_POINTER_LOCK_FREE
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// Base types for atomics.
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template<typename _IntTp>
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struct __atomic_base;
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/// atomic_char
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typedef __atomic_base<char> atomic_char;
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/// atomic_schar
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typedef __atomic_base<signed char> atomic_schar;
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/// atomic_uchar
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typedef __atomic_base<unsigned char> atomic_uchar;
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/// atomic_short
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typedef __atomic_base<short> atomic_short;
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/// atomic_ushort
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typedef __atomic_base<unsigned short> atomic_ushort;
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/// atomic_int
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typedef __atomic_base<int> atomic_int;
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/// atomic_uint
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typedef __atomic_base<unsigned int> atomic_uint;
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/// atomic_long
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typedef __atomic_base<long> atomic_long;
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/// atomic_ulong
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typedef __atomic_base<unsigned long> atomic_ulong;
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/// atomic_llong
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typedef __atomic_base<long long> atomic_llong;
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/// atomic_ullong
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typedef __atomic_base<unsigned long long> atomic_ullong;
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/// atomic_wchar_t
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typedef __atomic_base<wchar_t> atomic_wchar_t;
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/// atomic_char16_t
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typedef __atomic_base<char16_t> atomic_char16_t;
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/// atomic_char32_t
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typedef __atomic_base<char32_t> atomic_char32_t;
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/// atomic_char32_t
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typedef __atomic_base<char32_t> atomic_char32_t;
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/// atomic_int_least8_t
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typedef __atomic_base<int_least8_t> atomic_int_least8_t;
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/// atomic_uint_least8_t
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typedef __atomic_base<uint_least8_t> atomic_uint_least8_t;
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/// atomic_int_least16_t
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typedef __atomic_base<int_least16_t> atomic_int_least16_t;
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/// atomic_uint_least16_t
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typedef __atomic_base<uint_least16_t> atomic_uint_least16_t;
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/// atomic_int_least32_t
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typedef __atomic_base<int_least32_t> atomic_int_least32_t;
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/// atomic_uint_least32_t
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typedef __atomic_base<uint_least32_t> atomic_uint_least32_t;
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/// atomic_int_least64_t
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typedef __atomic_base<int_least64_t> atomic_int_least64_t;
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/// atomic_uint_least64_t
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typedef __atomic_base<uint_least64_t> atomic_uint_least64_t;
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/// atomic_int_fast8_t
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typedef __atomic_base<int_fast8_t> atomic_int_fast8_t;
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/// atomic_uint_fast8_t
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typedef __atomic_base<uint_fast8_t> atomic_uint_fast8_t;
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/// atomic_int_fast16_t
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typedef __atomic_base<int_fast16_t> atomic_int_fast16_t;
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/// atomic_uint_fast16_t
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typedef __atomic_base<uint_fast16_t> atomic_uint_fast16_t;
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/// atomic_int_fast32_t
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typedef __atomic_base<int_fast32_t> atomic_int_fast32_t;
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/// atomic_uint_fast32_t
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typedef __atomic_base<uint_fast32_t> atomic_uint_fast32_t;
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/// atomic_int_fast64_t
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typedef __atomic_base<int_fast64_t> atomic_int_fast64_t;
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/// atomic_uint_fast64_t
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typedef __atomic_base<uint_fast64_t> atomic_uint_fast64_t;
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/// atomic_intptr_t
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typedef __atomic_base<intptr_t> atomic_intptr_t;
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/// atomic_uintptr_t
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typedef __atomic_base<uintptr_t> atomic_uintptr_t;
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/// atomic_size_t
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typedef __atomic_base<size_t> atomic_size_t;
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/// atomic_intmax_t
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typedef __atomic_base<intmax_t> atomic_intmax_t;
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/// atomic_uintmax_t
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typedef __atomic_base<uintmax_t> atomic_uintmax_t;
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/// atomic_ptrdiff_t
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typedef __atomic_base<ptrdiff_t> atomic_ptrdiff_t;
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#define ATOMIC_VAR_INIT(_VI) { _VI }
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template<typename _Tp>
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struct atomic;
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template<typename _Tp>
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struct atomic<_Tp*>;
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/**
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* @brief Base type for atomic_flag.
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*
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* Base type is POD with data, allowing atomic_flag to derive from
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* it and meet the standard layout type requirement. In addition to
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* compatibilty with a C interface, this allows different
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* implementations of atomic_flag to use the same atomic operation
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* functions, via a standard conversion to the __atomic_flag_base
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* argument.
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*/
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// _GLIBCXX_BEGIN_EXTERN_C
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struct __atomic_flag_base
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{
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bool _M_i;
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};
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// _GLIBCXX_END_EXTERN_C
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#define ATOMIC_FLAG_INIT { false }
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/// atomic_flag
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struct atomic_flag : public __atomic_flag_base
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{
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atomic_flag() noexcept = default;
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~atomic_flag() noexcept = default;
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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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// Conversion to ATOMIC_FLAG_INIT.
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atomic_flag(bool __i) noexcept : __atomic_flag_base({ __i }) { }
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__libitm_always_inline bool
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test_and_set(memory_order __m = memory_order_seq_cst) noexcept
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{
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return __atomic_test_and_set (&_M_i, __m);
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}
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__libitm_always_inline bool
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test_and_set(memory_order __m = memory_order_seq_cst) volatile noexcept
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{
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return __atomic_test_and_set (&_M_i, __m);
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}
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__libitm_always_inline void
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clear(memory_order __m = memory_order_seq_cst) noexcept
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{
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// __glibcxx_assert(__m != memory_order_consume);
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// __glibcxx_assert(__m != memory_order_acquire);
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// __glibcxx_assert(__m != memory_order_acq_rel);
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__atomic_clear (&_M_i, __m);
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}
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__libitm_always_inline void
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clear(memory_order __m = memory_order_seq_cst) volatile noexcept
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{
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// __glibcxx_assert(__m != memory_order_consume);
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// __glibcxx_assert(__m != memory_order_acquire);
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// __glibcxx_assert(__m != memory_order_acq_rel);
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__atomic_clear (&_M_i, __m);
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}
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};
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/// Base class for atomic integrals.
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//
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// For each of the integral types, define atomic_[integral type] struct
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//
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// atomic_bool bool
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// atomic_char char
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// atomic_schar signed char
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// atomic_uchar unsigned char
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// atomic_short short
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// atomic_ushort unsigned short
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// atomic_int int
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// atomic_uint unsigned int
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// atomic_long long
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// atomic_ulong unsigned long
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// atomic_llong long long
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// atomic_ullong unsigned long long
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// atomic_char16_t char16_t
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// atomic_char32_t char32_t
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// atomic_wchar_t wchar_t
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//
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// NB: Assuming _ITp is an integral scalar type that is 1, 2, 4, or
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// 8 bytes, since that is what GCC built-in functions for atomic
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// memory access expect.
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template<typename _ITp>
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struct __atomic_base
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{
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private:
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typedef _ITp __int_type;
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__int_type _M_i;
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public:
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__atomic_base() noexcept = default;
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~__atomic_base() noexcept = default;
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__atomic_base(const __atomic_base&) = delete;
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__atomic_base& operator=(const __atomic_base&) = delete;
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__atomic_base& operator=(const __atomic_base&) volatile = delete;
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// Requires __int_type convertible to _M_i.
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constexpr __atomic_base(__int_type __i) noexcept : _M_i (__i) { }
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operator __int_type() const noexcept
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{ return load(); }
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operator __int_type() const volatile noexcept
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{ return load(); }
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__int_type
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operator=(__int_type __i) noexcept
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{
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store(__i);
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return __i;
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}
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__int_type
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operator=(__int_type __i) volatile noexcept
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{
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store(__i);
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return __i;
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}
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__int_type
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operator++(int) noexcept
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{ return fetch_add(1); }
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__int_type
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operator++(int) volatile noexcept
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{ return fetch_add(1); }
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__int_type
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operator--(int) noexcept
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{ return fetch_sub(1); }
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__int_type
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operator--(int) volatile noexcept
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{ return fetch_sub(1); }
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__int_type
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operator++() noexcept
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{ return __atomic_add_fetch(&_M_i, 1, memory_order_seq_cst); }
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__int_type
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operator++() volatile noexcept
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{ return __atomic_add_fetch(&_M_i, 1, memory_order_seq_cst); }
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__int_type
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operator--() noexcept
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{ return __atomic_sub_fetch(&_M_i, 1, memory_order_seq_cst); }
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__int_type
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operator--() volatile noexcept
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{ return __atomic_sub_fetch(&_M_i, 1, memory_order_seq_cst); }
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__int_type
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operator+=(__int_type __i) noexcept
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{ return __atomic_add_fetch(&_M_i, __i, memory_order_seq_cst); }
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__int_type
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operator+=(__int_type __i) volatile noexcept
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{ return __atomic_add_fetch(&_M_i, __i, memory_order_seq_cst); }
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__int_type
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operator-=(__int_type __i) noexcept
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{ return __atomic_sub_fetch(&_M_i, __i, memory_order_seq_cst); }
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__int_type
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operator-=(__int_type __i) volatile noexcept
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{ return __atomic_sub_fetch(&_M_i, __i, memory_order_seq_cst); }
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__int_type
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operator&=(__int_type __i) noexcept
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{ return __atomic_and_fetch(&_M_i, __i, memory_order_seq_cst); }
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__int_type
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operator&=(__int_type __i) volatile noexcept
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{ return __atomic_and_fetch(&_M_i, __i, memory_order_seq_cst); }
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__int_type
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operator|=(__int_type __i) noexcept
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{ return __atomic_or_fetch(&_M_i, __i, memory_order_seq_cst); }
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__int_type
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operator|=(__int_type __i) volatile noexcept
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{ return __atomic_or_fetch(&_M_i, __i, memory_order_seq_cst); }
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__int_type
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operator^=(__int_type __i) noexcept
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{ return __atomic_xor_fetch(&_M_i, __i, memory_order_seq_cst); }
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__int_type
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operator^=(__int_type __i) volatile noexcept
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{ return __atomic_xor_fetch(&_M_i, __i, memory_order_seq_cst); }
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bool
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is_lock_free() const noexcept
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{ return __atomic_is_lock_free (sizeof (_M_i), &_M_i); }
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bool
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is_lock_free() const volatile noexcept
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{ return __atomic_is_lock_free (sizeof (_M_i), &_M_i); }
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__libitm_always_inline void
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store(__int_type __i, memory_order __m = memory_order_seq_cst) noexcept
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{
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// __glibcxx_assert(__m != memory_order_acquire);
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// __glibcxx_assert(__m != memory_order_acq_rel);
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// __glibcxx_assert(__m != memory_order_consume);
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__atomic_store_n(&_M_i, __i, __m);
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}
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__libitm_always_inline void
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store(__int_type __i,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{
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// __glibcxx_assert(__m != memory_order_acquire);
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// __glibcxx_assert(__m != memory_order_acq_rel);
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// __glibcxx_assert(__m != memory_order_consume);
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__atomic_store_n(&_M_i, __i, __m);
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}
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__libitm_always_inline __int_type
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load(memory_order __m = memory_order_seq_cst) const noexcept
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{
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// __glibcxx_assert(__m != memory_order_release);
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// __glibcxx_assert(__m != memory_order_acq_rel);
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return __atomic_load_n(&_M_i, __m);
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}
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__libitm_always_inline __int_type
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load(memory_order __m = memory_order_seq_cst) const volatile noexcept
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{
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// __glibcxx_assert(__m != memory_order_release);
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// __glibcxx_assert(__m != memory_order_acq_rel);
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return __atomic_load_n(&_M_i, __m);
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}
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__libitm_always_inline __int_type
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exchange(__int_type __i,
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memory_order __m = memory_order_seq_cst) noexcept
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{
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return __atomic_exchange_n(&_M_i, __i, __m);
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}
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__libitm_always_inline __int_type
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exchange(__int_type __i,
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memory_order __m = memory_order_seq_cst) volatile noexcept
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{
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return __atomic_exchange_n(&_M_i, __i, __m);
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}
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__libitm_always_inline bool
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compare_exchange_weak(__int_type& __i1, __int_type __i2,
|
|
memory_order __m1, memory_order __m2) noexcept
|
|
{
|
|
// __glibcxx_assert(__m2 != memory_order_release);
|
|
// __glibcxx_assert(__m2 != memory_order_acq_rel);
|
|
// __glibcxx_assert(__m2 <= __m1);
|
|
|
|
return __atomic_compare_exchange_n(&_M_i, &__i1, __i2, 1, __m1, __m2);
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(__int_type& __i1, __int_type __i2,
|
|
memory_order __m1,
|
|
memory_order __m2) volatile noexcept
|
|
{
|
|
// __glibcxx_assert(__m2 != memory_order_release);
|
|
// __glibcxx_assert(__m2 != memory_order_acq_rel);
|
|
// __glibcxx_assert(__m2 <= __m1);
|
|
|
|
return __atomic_compare_exchange_n(&_M_i, &__i1, __i2, 1, __m1, __m2);
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(__int_type& __i1, __int_type __i2,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{
|
|
return compare_exchange_weak(__i1, __i2, __m,
|
|
__calculate_memory_order(__m));
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(__int_type& __i1, __int_type __i2,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{
|
|
return compare_exchange_weak(__i1, __i2, __m,
|
|
__calculate_memory_order(__m));
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(__int_type& __i1, __int_type __i2,
|
|
memory_order __m1, memory_order __m2) noexcept
|
|
{
|
|
// __glibcxx_assert(__m2 != memory_order_release);
|
|
// __glibcxx_assert(__m2 != memory_order_acq_rel);
|
|
// __glibcxx_assert(__m2 <= __m1);
|
|
|
|
return __atomic_compare_exchange_n(&_M_i, &__i1, __i2, 0, __m1, __m2);
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(__int_type& __i1, __int_type __i2,
|
|
memory_order __m1,
|
|
memory_order __m2) volatile noexcept
|
|
{
|
|
// __glibcxx_assert(__m2 != memory_order_release);
|
|
// __glibcxx_assert(__m2 != memory_order_acq_rel);
|
|
// __glibcxx_assert(__m2 <= __m1);
|
|
|
|
return __atomic_compare_exchange_n(&_M_i, &__i1, __i2, 0, __m1, __m2);
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(__int_type& __i1, __int_type __i2,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{
|
|
return compare_exchange_strong(__i1, __i2, __m,
|
|
__calculate_memory_order(__m));
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(__int_type& __i1, __int_type __i2,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{
|
|
return compare_exchange_strong(__i1, __i2, __m,
|
|
__calculate_memory_order(__m));
|
|
}
|
|
|
|
__libitm_always_inline __int_type
|
|
fetch_add(__int_type __i,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return __atomic_fetch_add(&_M_i, __i, __m); }
|
|
|
|
__libitm_always_inline __int_type
|
|
fetch_add(__int_type __i,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return __atomic_fetch_add(&_M_i, __i, __m); }
|
|
|
|
__libitm_always_inline __int_type
|
|
fetch_sub(__int_type __i,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return __atomic_fetch_sub(&_M_i, __i, __m); }
|
|
|
|
__libitm_always_inline __int_type
|
|
fetch_sub(__int_type __i,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return __atomic_fetch_sub(&_M_i, __i, __m); }
|
|
|
|
__libitm_always_inline __int_type
|
|
fetch_and(__int_type __i,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return __atomic_fetch_and(&_M_i, __i, __m); }
|
|
|
|
__libitm_always_inline __int_type
|
|
fetch_and(__int_type __i,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return __atomic_fetch_and(&_M_i, __i, __m); }
|
|
|
|
__libitm_always_inline __int_type
|
|
fetch_or(__int_type __i,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return __atomic_fetch_or(&_M_i, __i, __m); }
|
|
|
|
__libitm_always_inline __int_type
|
|
fetch_or(__int_type __i,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return __atomic_fetch_or(&_M_i, __i, __m); }
|
|
|
|
__libitm_always_inline __int_type
|
|
fetch_xor(__int_type __i,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return __atomic_fetch_xor(&_M_i, __i, __m); }
|
|
|
|
__libitm_always_inline __int_type
|
|
fetch_xor(__int_type __i,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return __atomic_fetch_xor(&_M_i, __i, __m); }
|
|
};
|
|
|
|
|
|
/// Partial specialization for pointer types.
|
|
template<typename _PTp>
|
|
struct __atomic_base<_PTp*>
|
|
{
|
|
private:
|
|
typedef _PTp* __pointer_type;
|
|
|
|
__pointer_type _M_p;
|
|
|
|
public:
|
|
__atomic_base() noexcept = default;
|
|
~__atomic_base() noexcept = default;
|
|
__atomic_base(const __atomic_base&) = delete;
|
|
__atomic_base& operator=(const __atomic_base&) = delete;
|
|
__atomic_base& operator=(const __atomic_base&) volatile = delete;
|
|
|
|
// Requires __pointer_type convertible to _M_p.
|
|
constexpr __atomic_base(__pointer_type __p) noexcept : _M_p (__p) { }
|
|
|
|
operator __pointer_type() const noexcept
|
|
{ return load(); }
|
|
|
|
operator __pointer_type() const volatile noexcept
|
|
{ return load(); }
|
|
|
|
__pointer_type
|
|
operator=(__pointer_type __p) noexcept
|
|
{
|
|
store(__p);
|
|
return __p;
|
|
}
|
|
|
|
__pointer_type
|
|
operator=(__pointer_type __p) volatile noexcept
|
|
{
|
|
store(__p);
|
|
return __p;
|
|
}
|
|
|
|
__pointer_type
|
|
operator++(int) noexcept
|
|
{ return fetch_add(1); }
|
|
|
|
__pointer_type
|
|
operator++(int) volatile noexcept
|
|
{ return fetch_add(1); }
|
|
|
|
__pointer_type
|
|
operator--(int) noexcept
|
|
{ return fetch_sub(1); }
|
|
|
|
__pointer_type
|
|
operator--(int) volatile noexcept
|
|
{ return fetch_sub(1); }
|
|
|
|
__pointer_type
|
|
operator++() noexcept
|
|
{ return __atomic_add_fetch(&_M_p, 1, memory_order_seq_cst); }
|
|
|
|
__pointer_type
|
|
operator++() volatile noexcept
|
|
{ return __atomic_add_fetch(&_M_p, 1, memory_order_seq_cst); }
|
|
|
|
__pointer_type
|
|
operator--() noexcept
|
|
{ return __atomic_sub_fetch(&_M_p, 1, memory_order_seq_cst); }
|
|
|
|
__pointer_type
|
|
operator--() volatile noexcept
|
|
{ return __atomic_sub_fetch(&_M_p, 1, memory_order_seq_cst); }
|
|
|
|
__pointer_type
|
|
operator+=(ptrdiff_t __d) noexcept
|
|
{ return __atomic_add_fetch(&_M_p, __d, memory_order_seq_cst); }
|
|
|
|
__pointer_type
|
|
operator+=(ptrdiff_t __d) volatile noexcept
|
|
{ return __atomic_add_fetch(&_M_p, __d, memory_order_seq_cst); }
|
|
|
|
__pointer_type
|
|
operator-=(ptrdiff_t __d) noexcept
|
|
{ return __atomic_sub_fetch(&_M_p, __d, memory_order_seq_cst); }
|
|
|
|
__pointer_type
|
|
operator-=(ptrdiff_t __d) volatile noexcept
|
|
{ return __atomic_sub_fetch(&_M_p, __d, memory_order_seq_cst); }
|
|
|
|
bool
|
|
is_lock_free() const noexcept
|
|
{ return __atomic_is_lock_free (sizeof (_M_p), &_M_p); }
|
|
|
|
bool
|
|
is_lock_free() const volatile noexcept
|
|
{ return __atomic_is_lock_free (sizeof (_M_p), &_M_p); }
|
|
|
|
__libitm_always_inline void
|
|
store(__pointer_type __p,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{
|
|
// __glibcxx_assert(__m != memory_order_acquire);
|
|
// __glibcxx_assert(__m != memory_order_acq_rel);
|
|
// __glibcxx_assert(__m != memory_order_consume);
|
|
|
|
__atomic_store_n(&_M_p, __p, __m);
|
|
}
|
|
|
|
__libitm_always_inline void
|
|
store(__pointer_type __p,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{
|
|
// __glibcxx_assert(__m != memory_order_acquire);
|
|
// __glibcxx_assert(__m != memory_order_acq_rel);
|
|
// __glibcxx_assert(__m != memory_order_consume);
|
|
|
|
__atomic_store_n(&_M_p, __p, __m);
|
|
}
|
|
|
|
__libitm_always_inline __pointer_type
|
|
load(memory_order __m = memory_order_seq_cst) const noexcept
|
|
{
|
|
// __glibcxx_assert(__m != memory_order_release);
|
|
// __glibcxx_assert(__m != memory_order_acq_rel);
|
|
|
|
return __atomic_load_n(&_M_p, __m);
|
|
}
|
|
|
|
__libitm_always_inline __pointer_type
|
|
load(memory_order __m = memory_order_seq_cst) const volatile noexcept
|
|
{
|
|
// __glibcxx_assert(__m != memory_order_release);
|
|
// __glibcxx_assert(__m != memory_order_acq_rel);
|
|
|
|
return __atomic_load_n(&_M_p, __m);
|
|
}
|
|
|
|
__libitm_always_inline __pointer_type
|
|
exchange(__pointer_type __p,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{
|
|
return __atomic_exchange_n(&_M_p, __p, __m);
|
|
}
|
|
|
|
__libitm_always_inline __pointer_type
|
|
exchange(__pointer_type __p,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{
|
|
return __atomic_exchange_n(&_M_p, __p, __m);
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(__pointer_type& __p1, __pointer_type __p2,
|
|
memory_order __m1,
|
|
memory_order __m2) noexcept
|
|
{
|
|
// __glibcxx_assert(__m2 != memory_order_release);
|
|
// __glibcxx_assert(__m2 != memory_order_acq_rel);
|
|
// __glibcxx_assert(__m2 <= __m1);
|
|
|
|
return __atomic_compare_exchange_n(&_M_p, &__p1, __p2, 0, __m1, __m2);
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(__pointer_type& __p1, __pointer_type __p2,
|
|
memory_order __m1,
|
|
memory_order __m2) volatile noexcept
|
|
{
|
|
// __glibcxx_assert(__m2 != memory_order_release);
|
|
// __glibcxx_assert(__m2 != memory_order_acq_rel);
|
|
// __glibcxx_assert(__m2 <= __m1);
|
|
|
|
return __atomic_compare_exchange_n(&_M_p, &__p1, __p2, 0, __m1, __m2);
|
|
}
|
|
|
|
__libitm_always_inline __pointer_type
|
|
fetch_add(ptrdiff_t __d,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return __atomic_fetch_add(&_M_p, __d, __m); }
|
|
|
|
__libitm_always_inline __pointer_type
|
|
fetch_add(ptrdiff_t __d,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return __atomic_fetch_add(&_M_p, __d, __m); }
|
|
|
|
__libitm_always_inline __pointer_type
|
|
fetch_sub(ptrdiff_t __d,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return __atomic_fetch_sub(&_M_p, __d, __m); }
|
|
|
|
__libitm_always_inline __pointer_type
|
|
fetch_sub(ptrdiff_t __d,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return __atomic_fetch_sub(&_M_p, __d, __m); }
|
|
};
|
|
|
|
|
|
/**
|
|
* @addtogroup atomics
|
|
* @{
|
|
*/
|
|
|
|
/// atomic_bool
|
|
// NB: No operators or fetch-operations for this type.
|
|
struct atomic_bool
|
|
{
|
|
private:
|
|
__atomic_base<bool> _M_base;
|
|
|
|
public:
|
|
atomic_bool() noexcept = default;
|
|
~atomic_bool() noexcept = default;
|
|
atomic_bool(const atomic_bool&) = delete;
|
|
atomic_bool& operator=(const atomic_bool&) = delete;
|
|
atomic_bool& operator=(const atomic_bool&) volatile = delete;
|
|
|
|
constexpr atomic_bool(bool __i) noexcept : _M_base(__i) { }
|
|
|
|
bool
|
|
operator=(bool __i) noexcept
|
|
{ return _M_base.operator=(__i); }
|
|
|
|
operator bool() const noexcept
|
|
{ return _M_base.load(); }
|
|
|
|
operator bool() const volatile noexcept
|
|
{ return _M_base.load(); }
|
|
|
|
bool
|
|
is_lock_free() const noexcept { return _M_base.is_lock_free(); }
|
|
|
|
bool
|
|
is_lock_free() const volatile noexcept { return _M_base.is_lock_free(); }
|
|
|
|
__libitm_always_inline void
|
|
store(bool __i, memory_order __m = memory_order_seq_cst) noexcept
|
|
{ _M_base.store(__i, __m); }
|
|
|
|
__libitm_always_inline void
|
|
store(bool __i, memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ _M_base.store(__i, __m); }
|
|
|
|
__libitm_always_inline bool
|
|
load(memory_order __m = memory_order_seq_cst) const noexcept
|
|
{ return _M_base.load(__m); }
|
|
|
|
__libitm_always_inline bool
|
|
load(memory_order __m = memory_order_seq_cst) const volatile noexcept
|
|
{ return _M_base.load(__m); }
|
|
|
|
__libitm_always_inline bool
|
|
exchange(bool __i, memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return _M_base.exchange(__i, __m); }
|
|
|
|
__libitm_always_inline bool
|
|
exchange(bool __i,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return _M_base.exchange(__i, __m); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(bool& __i1, bool __i2, memory_order __m1,
|
|
memory_order __m2) noexcept
|
|
{ return _M_base.compare_exchange_weak(__i1, __i2, __m1, __m2); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(bool& __i1, bool __i2, memory_order __m1,
|
|
memory_order __m2) volatile noexcept
|
|
{ return _M_base.compare_exchange_weak(__i1, __i2, __m1, __m2); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(bool& __i1, bool __i2,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return _M_base.compare_exchange_weak(__i1, __i2, __m); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(bool& __i1, bool __i2,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return _M_base.compare_exchange_weak(__i1, __i2, __m); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(bool& __i1, bool __i2, memory_order __m1,
|
|
memory_order __m2) noexcept
|
|
{ return _M_base.compare_exchange_strong(__i1, __i2, __m1, __m2); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(bool& __i1, bool __i2, memory_order __m1,
|
|
memory_order __m2) volatile noexcept
|
|
{ return _M_base.compare_exchange_strong(__i1, __i2, __m1, __m2); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(bool& __i1, bool __i2,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return _M_base.compare_exchange_strong(__i1, __i2, __m); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(bool& __i1, bool __i2,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return _M_base.compare_exchange_strong(__i1, __i2, __m); }
|
|
};
|
|
|
|
|
|
/// atomic
|
|
/// 29.4.3, Generic atomic type, primary class template.
|
|
template<typename _Tp>
|
|
struct atomic
|
|
{
|
|
private:
|
|
_Tp _M_i;
|
|
|
|
public:
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(_Tp __i) noexcept : _M_i(__i) { }
|
|
|
|
operator _Tp() const noexcept
|
|
{ return load(); }
|
|
|
|
operator _Tp() const volatile noexcept
|
|
{ return load(); }
|
|
|
|
_Tp
|
|
operator=(_Tp __i) noexcept
|
|
{ store(__i); return __i; }
|
|
|
|
_Tp
|
|
operator=(_Tp __i) volatile noexcept
|
|
{ store(__i); return __i; }
|
|
|
|
bool
|
|
is_lock_free() const noexcept
|
|
{ return __atomic_is_lock_free(sizeof(_M_i), &_M_i); }
|
|
|
|
bool
|
|
is_lock_free() const volatile noexcept
|
|
{ return __atomic_is_lock_free(sizeof(_M_i), &_M_i); }
|
|
|
|
void
|
|
store(_Tp __i, memory_order _m = memory_order_seq_cst) noexcept
|
|
{ __atomic_store(&_M_i, &__i, _m); }
|
|
|
|
__libitm_always_inline void
|
|
store(_Tp __i, memory_order _m = memory_order_seq_cst) volatile noexcept
|
|
{ __atomic_store(&_M_i, &__i, _m); }
|
|
|
|
__libitm_always_inline _Tp
|
|
load(memory_order _m = memory_order_seq_cst) const noexcept
|
|
{
|
|
_Tp tmp;
|
|
__atomic_load(&_M_i, &tmp, _m);
|
|
return tmp;
|
|
}
|
|
|
|
__libitm_always_inline _Tp
|
|
load(memory_order _m = memory_order_seq_cst) const volatile noexcept
|
|
{
|
|
_Tp tmp;
|
|
__atomic_load(&_M_i, &tmp, _m);
|
|
return tmp;
|
|
}
|
|
|
|
__libitm_always_inline _Tp
|
|
exchange(_Tp __i, memory_order _m = memory_order_seq_cst) noexcept
|
|
{
|
|
_Tp tmp;
|
|
__atomic_exchange(&_M_i, &__i, &tmp, _m);
|
|
return tmp;
|
|
}
|
|
|
|
__libitm_always_inline _Tp
|
|
exchange(_Tp __i,
|
|
memory_order _m = memory_order_seq_cst) volatile noexcept
|
|
{
|
|
_Tp tmp;
|
|
__atomic_exchange(&_M_i, &__i, &tmp, _m);
|
|
return tmp;
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(_Tp& __e, _Tp __i, memory_order __s,
|
|
memory_order __f) noexcept
|
|
{
|
|
return __atomic_compare_exchange(&_M_i, &__e, &__i, true, __s, __f);
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(_Tp& __e, _Tp __i, memory_order __s,
|
|
memory_order __f) volatile noexcept
|
|
{
|
|
return __atomic_compare_exchange(&_M_i, &__e, &__i, true, __s, __f);
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(_Tp& __e, _Tp __i,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return compare_exchange_weak(__e, __i, __m, __m); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(_Tp& __e, _Tp __i,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return compare_exchange_weak(__e, __i, __m, __m); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(_Tp& __e, _Tp __i, memory_order __s,
|
|
memory_order __f) noexcept
|
|
{
|
|
return __atomic_compare_exchange(&_M_i, &__e, &__i, false, __s, __f);
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(_Tp& __e, _Tp __i, memory_order __s,
|
|
memory_order __f) volatile noexcept
|
|
{
|
|
return __atomic_compare_exchange(&_M_i, &__e, &__i, false, __s, __f);
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(_Tp& __e, _Tp __i,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return compare_exchange_strong(__e, __i, __m, __m); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(_Tp& __e, _Tp __i,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return compare_exchange_strong(__e, __i, __m, __m); }
|
|
};
|
|
|
|
|
|
/// Partial specialization for pointer types.
|
|
template<typename _Tp>
|
|
struct atomic<_Tp*>
|
|
{
|
|
typedef _Tp* __pointer_type;
|
|
typedef __atomic_base<_Tp*> __base_type;
|
|
__base_type _M_b;
|
|
|
|
atomic() noexcept = default;
|
|
~atomic() noexcept = default;
|
|
atomic(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) = delete;
|
|
atomic& operator=(const atomic&) volatile = delete;
|
|
|
|
constexpr atomic(__pointer_type __p) noexcept : _M_b(__p) { }
|
|
|
|
operator __pointer_type() const noexcept
|
|
{ return __pointer_type(_M_b); }
|
|
|
|
operator __pointer_type() const volatile noexcept
|
|
{ return __pointer_type(_M_b); }
|
|
|
|
__pointer_type
|
|
operator=(__pointer_type __p) noexcept
|
|
{ return _M_b.operator=(__p); }
|
|
|
|
__pointer_type
|
|
operator=(__pointer_type __p) volatile noexcept
|
|
{ return _M_b.operator=(__p); }
|
|
|
|
__pointer_type
|
|
operator++(int) noexcept
|
|
{ return _M_b++; }
|
|
|
|
__pointer_type
|
|
operator++(int) volatile noexcept
|
|
{ return _M_b++; }
|
|
|
|
__pointer_type
|
|
operator--(int) noexcept
|
|
{ return _M_b--; }
|
|
|
|
__pointer_type
|
|
operator--(int) volatile noexcept
|
|
{ return _M_b--; }
|
|
|
|
__pointer_type
|
|
operator++() noexcept
|
|
{ return ++_M_b; }
|
|
|
|
__pointer_type
|
|
operator++() volatile noexcept
|
|
{ return ++_M_b; }
|
|
|
|
__pointer_type
|
|
operator--() noexcept
|
|
{ return --_M_b; }
|
|
|
|
__pointer_type
|
|
operator--() volatile noexcept
|
|
{ return --_M_b; }
|
|
|
|
__pointer_type
|
|
operator+=(ptrdiff_t __d) noexcept
|
|
{ return _M_b.operator+=(__d); }
|
|
|
|
__pointer_type
|
|
operator+=(ptrdiff_t __d) volatile noexcept
|
|
{ return _M_b.operator+=(__d); }
|
|
|
|
__pointer_type
|
|
operator-=(ptrdiff_t __d) noexcept
|
|
{ return _M_b.operator-=(__d); }
|
|
|
|
__pointer_type
|
|
operator-=(ptrdiff_t __d) volatile noexcept
|
|
{ return _M_b.operator-=(__d); }
|
|
|
|
bool
|
|
is_lock_free() const noexcept
|
|
{ return _M_b.is_lock_free(); }
|
|
|
|
bool
|
|
is_lock_free() const volatile noexcept
|
|
{ return _M_b.is_lock_free(); }
|
|
|
|
__libitm_always_inline void
|
|
store(__pointer_type __p,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return _M_b.store(__p, __m); }
|
|
|
|
__libitm_always_inline void
|
|
store(__pointer_type __p,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return _M_b.store(__p, __m); }
|
|
|
|
__libitm_always_inline __pointer_type
|
|
load(memory_order __m = memory_order_seq_cst) const noexcept
|
|
{ return _M_b.load(__m); }
|
|
|
|
__libitm_always_inline __pointer_type
|
|
load(memory_order __m = memory_order_seq_cst) const volatile noexcept
|
|
{ return _M_b.load(__m); }
|
|
|
|
__libitm_always_inline __pointer_type
|
|
exchange(__pointer_type __p,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return _M_b.exchange(__p, __m); }
|
|
|
|
__libitm_always_inline __pointer_type
|
|
exchange(__pointer_type __p,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return _M_b.exchange(__p, __m); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(__pointer_type& __p1, __pointer_type __p2,
|
|
memory_order __m1, memory_order __m2) noexcept
|
|
{ return _M_b.compare_exchange_strong(__p1, __p2, __m1, __m2); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(__pointer_type& __p1, __pointer_type __p2,
|
|
memory_order __m1,
|
|
memory_order __m2) volatile noexcept
|
|
{ return _M_b.compare_exchange_strong(__p1, __p2, __m1, __m2); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(__pointer_type& __p1, __pointer_type __p2,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{
|
|
return compare_exchange_weak(__p1, __p2, __m,
|
|
__calculate_memory_order(__m));
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_weak(__pointer_type& __p1, __pointer_type __p2,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{
|
|
return compare_exchange_weak(__p1, __p2, __m,
|
|
__calculate_memory_order(__m));
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(__pointer_type& __p1, __pointer_type __p2,
|
|
memory_order __m1, memory_order __m2) noexcept
|
|
{ return _M_b.compare_exchange_strong(__p1, __p2, __m1, __m2); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(__pointer_type& __p1, __pointer_type __p2,
|
|
memory_order __m1,
|
|
memory_order __m2) volatile noexcept
|
|
{ return _M_b.compare_exchange_strong(__p1, __p2, __m1, __m2); }
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(__pointer_type& __p1, __pointer_type __p2,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{
|
|
return _M_b.compare_exchange_strong(__p1, __p2, __m,
|
|
__calculate_memory_order(__m));
|
|
}
|
|
|
|
__libitm_always_inline bool
|
|
compare_exchange_strong(__pointer_type& __p1, __pointer_type __p2,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{
|
|
return _M_b.compare_exchange_strong(__p1, __p2, __m,
|
|
__calculate_memory_order(__m));
|
|
}
|
|
|
|
__libitm_always_inline __pointer_type
|
|
fetch_add(ptrdiff_t __d,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return _M_b.fetch_add(__d, __m); }
|
|
|
|
__libitm_always_inline __pointer_type
|
|
fetch_add(ptrdiff_t __d,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return _M_b.fetch_add(__d, __m); }
|
|
|
|
__libitm_always_inline __pointer_type
|
|
fetch_sub(ptrdiff_t __d,
|
|
memory_order __m = memory_order_seq_cst) noexcept
|
|
{ return _M_b.fetch_sub(__d, __m); }
|
|
|
|
__libitm_always_inline __pointer_type
|
|
fetch_sub(ptrdiff_t __d,
|
|
memory_order __m = memory_order_seq_cst) volatile noexcept
|
|
{ return _M_b.fetch_sub(__d, __m); }
|
|
};
|
|
|
|
|
|
/// Explicit specialization for bool.
|
|
template<>
|
|
struct atomic<bool> : public atomic_bool
|
|
{
|
|
typedef bool __integral_type;
|
|
typedef atomic_bool __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 char.
|
|
template<>
|
|
struct atomic<char> : public atomic_char
|
|
{
|
|
typedef char __integral_type;
|
|
typedef atomic_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 signed char.
|
|
template<>
|
|
struct atomic<signed char> : public atomic_schar
|
|
{
|
|
typedef signed char __integral_type;
|
|
typedef atomic_schar __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> : public atomic_uchar
|
|
{
|
|
typedef unsigned char __integral_type;
|
|
typedef atomic_uchar __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> : public atomic_short
|
|
{
|
|
typedef short __integral_type;
|
|
typedef atomic_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> : public atomic_ushort
|
|
{
|
|
typedef unsigned short __integral_type;
|
|
typedef atomic_ushort __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_int
|
|
{
|
|
typedef int __integral_type;
|
|
typedef atomic_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> : public atomic_uint
|
|
{
|
|
typedef unsigned int __integral_type;
|
|
typedef atomic_uint __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> : public atomic_long
|
|
{
|
|
typedef long __integral_type;
|
|
typedef atomic_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> : public atomic_ulong
|
|
{
|
|
typedef unsigned long __integral_type;
|
|
typedef atomic_ulong __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> : public atomic_llong
|
|
{
|
|
typedef long long __integral_type;
|
|
typedef atomic_llong __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> : public atomic_ullong
|
|
{
|
|
typedef unsigned long long __integral_type;
|
|
typedef atomic_ullong __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> : public atomic_wchar_t
|
|
{
|
|
typedef wchar_t __integral_type;
|
|
typedef atomic_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> : public atomic_char16_t
|
|
{
|
|
typedef char16_t __integral_type;
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typedef atomic_char16_t __base_type;
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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(__integral_type __i) noexcept : __base_type(__i) { }
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using __base_type::operator __integral_type;
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using __base_type::operator=;
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};
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/// Explicit specialization for char32_t.
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template<>
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struct atomic<char32_t> : public atomic_char32_t
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{
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typedef char32_t __integral_type;
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typedef atomic_char32_t __base_type;
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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(__integral_type __i) noexcept : __base_type(__i) { }
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using __base_type::operator __integral_type;
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using __base_type::operator=;
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};
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// Function definitions, atomic_flag operations.
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inline __libitm_always_inline bool
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atomic_flag_test_and_set_explicit(atomic_flag* __a,
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memory_order __m) noexcept
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{ return __a->test_and_set(__m); }
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inline __libitm_always_inline bool
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atomic_flag_test_and_set_explicit(volatile atomic_flag* __a,
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memory_order __m) noexcept
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{ return __a->test_and_set(__m); }
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inline __libitm_always_inline void
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atomic_flag_clear_explicit(atomic_flag* __a, memory_order __m) noexcept
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{ __a->clear(__m); }
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inline __libitm_always_inline void
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atomic_flag_clear_explicit(volatile atomic_flag* __a,
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memory_order __m) noexcept
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{ __a->clear(__m); }
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inline __libitm_always_inline bool
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atomic_flag_test_and_set(atomic_flag* __a) noexcept
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{ return atomic_flag_test_and_set_explicit(__a, memory_order_seq_cst); }
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inline __libitm_always_inline bool
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atomic_flag_test_and_set(volatile atomic_flag* __a) noexcept
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{ return atomic_flag_test_and_set_explicit(__a, memory_order_seq_cst); }
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inline __libitm_always_inline void
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atomic_flag_clear(atomic_flag* __a) noexcept
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{ atomic_flag_clear_explicit(__a, memory_order_seq_cst); }
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inline __libitm_always_inline void
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atomic_flag_clear(volatile atomic_flag* __a) noexcept
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{ atomic_flag_clear_explicit(__a, memory_order_seq_cst); }
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// Function templates generally applicable to atomic types.
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template<typename _ITp>
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__libitm_always_inline bool
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atomic_is_lock_free(const atomic<_ITp>* __a) noexcept
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{ return __a->is_lock_free(); }
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template<typename _ITp>
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__libitm_always_inline bool
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atomic_is_lock_free(const volatile atomic<_ITp>* __a) noexcept
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{ return __a->is_lock_free(); }
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template<typename _ITp>
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__libitm_always_inline void
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atomic_init(atomic<_ITp>* __a, _ITp __i) noexcept;
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template<typename _ITp>
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__libitm_always_inline void
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atomic_init(volatile atomic<_ITp>* __a, _ITp __i) noexcept;
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template<typename _ITp>
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__libitm_always_inline void
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atomic_store_explicit(atomic<_ITp>* __a, _ITp __i,
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memory_order __m) noexcept
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{ __a->store(__i, __m); }
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template<typename _ITp>
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__libitm_always_inline void
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atomic_store_explicit(volatile atomic<_ITp>* __a, _ITp __i,
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memory_order __m) noexcept
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{ __a->store(__i, __m); }
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template<typename _ITp>
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__libitm_always_inline _ITp
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atomic_load_explicit(const atomic<_ITp>* __a, memory_order __m) noexcept
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{ return __a->load(__m); }
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template<typename _ITp>
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__libitm_always_inline _ITp
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atomic_load_explicit(const volatile atomic<_ITp>* __a,
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memory_order __m) noexcept
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{ return __a->load(__m); }
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template<typename _ITp>
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__libitm_always_inline _ITp
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atomic_exchange_explicit(atomic<_ITp>* __a, _ITp __i,
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memory_order __m) noexcept
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{ return __a->exchange(__i, __m); }
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template<typename _ITp>
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__libitm_always_inline _ITp
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atomic_exchange_explicit(volatile atomic<_ITp>* __a, _ITp __i,
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memory_order __m) noexcept
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{ return __a->exchange(__i, __m); }
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template<typename _ITp>
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__libitm_always_inline bool
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atomic_compare_exchange_weak_explicit(atomic<_ITp>* __a,
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_ITp* __i1, _ITp __i2,
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memory_order __m1,
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memory_order __m2) noexcept
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{ return __a->compare_exchange_weak(*__i1, __i2, __m1, __m2); }
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template<typename _ITp>
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__libitm_always_inline bool
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atomic_compare_exchange_weak_explicit(volatile atomic<_ITp>* __a,
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_ITp* __i1, _ITp __i2,
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memory_order __m1,
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memory_order __m2) noexcept
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{ return __a->compare_exchange_weak(*__i1, __i2, __m1, __m2); }
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template<typename _ITp>
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__libitm_always_inline bool
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atomic_compare_exchange_strong_explicit(atomic<_ITp>* __a,
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_ITp* __i1, _ITp __i2,
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memory_order __m1,
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memory_order __m2) noexcept
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{ return __a->compare_exchange_strong(*__i1, __i2, __m1, __m2); }
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template<typename _ITp>
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__libitm_always_inline bool
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atomic_compare_exchange_strong_explicit(volatile atomic<_ITp>* __a,
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_ITp* __i1, _ITp __i2,
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memory_order __m1,
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memory_order __m2) noexcept
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{ return __a->compare_exchange_strong(*__i1, __i2, __m1, __m2); }
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template<typename _ITp>
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__libitm_always_inline void
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atomic_store(atomic<_ITp>* __a, _ITp __i) noexcept
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{ atomic_store_explicit(__a, __i, memory_order_seq_cst); }
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template<typename _ITp>
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__libitm_always_inline void
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atomic_store(volatile atomic<_ITp>* __a, _ITp __i) noexcept
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{ atomic_store_explicit(__a, __i, memory_order_seq_cst); }
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template<typename _ITp>
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__libitm_always_inline _ITp
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atomic_load(const atomic<_ITp>* __a) noexcept
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{ return atomic_load_explicit(__a, memory_order_seq_cst); }
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template<typename _ITp>
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__libitm_always_inline _ITp
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atomic_load(const volatile atomic<_ITp>* __a) noexcept
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{ return atomic_load_explicit(__a, memory_order_seq_cst); }
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template<typename _ITp>
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__libitm_always_inline _ITp
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atomic_exchange(atomic<_ITp>* __a, _ITp __i) noexcept
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{ return atomic_exchange_explicit(__a, __i, memory_order_seq_cst); }
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template<typename _ITp>
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__libitm_always_inline _ITp
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atomic_exchange(volatile atomic<_ITp>* __a, _ITp __i) noexcept
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{ return atomic_exchange_explicit(__a, __i, memory_order_seq_cst); }
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template<typename _ITp>
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__libitm_always_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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|
{
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return atomic_compare_exchange_weak_explicit(__a, __i1, __i2,
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memory_order_seq_cst,
|
|
memory_order_seq_cst);
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}
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|
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template<typename _ITp>
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|
__libitm_always_inline bool
|
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atomic_compare_exchange_weak(volatile atomic<_ITp>* __a,
|
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_ITp* __i1, _ITp __i2) noexcept
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|
{
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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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|
|
template<typename _ITp>
|
|
__libitm_always_inline bool
|
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atomic_compare_exchange_strong(atomic<_ITp>* __a,
|
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_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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|
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template<typename _ITp>
|
|
__libitm_always_inline bool
|
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atomic_compare_exchange_strong(volatile atomic<_ITp>* __a,
|
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_ITp* __i1, _ITp __i2) noexcept
|
|
{
|
|
return atomic_compare_exchange_strong_explicit(__a, __i1, __i2,
|
|
memory_order_seq_cst,
|
|
memory_order_seq_cst);
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|
}
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|
|
// Function templates for atomic_integral operations only, using
|
|
// __atomic_base. Template argument should be constricted to
|
|
// intergral types as specified in the standard, excluding address
|
|
// types.
|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_add_explicit(__atomic_base<_ITp>* __a, _ITp __i,
|
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memory_order __m) noexcept
|
|
{ return __a->fetch_add(__i, __m); }
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|
|
template<typename _ITp>
|
|
__libitm_always_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); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_sub_explicit(__atomic_base<_ITp>* __a, _ITp __i,
|
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memory_order __m) noexcept
|
|
{ return __a->fetch_sub(__i, __m); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_sub_explicit(volatile __atomic_base<_ITp>* __a, _ITp __i,
|
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memory_order __m) noexcept
|
|
{ return __a->fetch_sub(__i, __m); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_and_explicit(__atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_and(__i, __m); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_and_explicit(volatile __atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_and(__i, __m); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_or_explicit(__atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_or(__i, __m); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_or_explicit(volatile __atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_or(__i, __m); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_xor_explicit(__atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_xor(__i, __m); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
|
atomic_fetch_xor_explicit(volatile __atomic_base<_ITp>* __a, _ITp __i,
|
|
memory_order __m) noexcept
|
|
{ return __a->fetch_xor(__i, __m); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_add(__atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_add_explicit(__a, __i, memory_order_seq_cst); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_add(volatile __atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_add_explicit(__a, __i, memory_order_seq_cst); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_sub(__atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_sub_explicit(__a, __i, memory_order_seq_cst); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
|
atomic_fetch_sub(volatile __atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_sub_explicit(__a, __i, memory_order_seq_cst); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
|
atomic_fetch_and(__atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_and_explicit(__a, __i, memory_order_seq_cst); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
|
atomic_fetch_and(volatile __atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_and_explicit(__a, __i, memory_order_seq_cst); }
|
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_or(__atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_or_explicit(__a, __i, memory_order_seq_cst); }
|
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_or(volatile __atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_or_explicit(__a, __i, memory_order_seq_cst); }
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
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atomic_fetch_xor(__atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_xor_explicit(__a, __i, memory_order_seq_cst); }
|
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|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp
|
|
atomic_fetch_xor(volatile __atomic_base<_ITp>* __a, _ITp __i) noexcept
|
|
{ return atomic_fetch_xor_explicit(__a, __i, memory_order_seq_cst); }
|
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|
|
|
|
// Partial specializations for pointers.
|
|
template<typename _ITp>
|
|
__libitm_always_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>
|
|
__libitm_always_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>
|
|
__libitm_always_inline _ITp*
|
|
atomic_fetch_add(volatile atomic<_ITp*>* __a, ptrdiff_t __d) noexcept
|
|
{ return __a->fetch_add(__d); }
|
|
|
|
template<typename _ITp>
|
|
__libitm_always_inline _ITp*
|
|
atomic_fetch_add(atomic<_ITp*>* __a, ptrdiff_t __d) noexcept
|
|
{ return __a->fetch_add(__d); }
|
|
|
|
template<typename _ITp>
|
|
__libitm_always_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>
|
|
__libitm_always_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>
|
|
__libitm_always_inline _ITp*
|
|
atomic_fetch_sub(volatile atomic<_ITp*>* __a, ptrdiff_t __d) noexcept
|
|
{ return __a->fetch_sub(__d); }
|
|
|
|
template<typename _ITp>
|
|
__libitm_always_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
|