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// -*- C++ -*- header. // Copyright (C) 2008-2013 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. /** @file include/atomic * This is a Standard C++ Library header. */ // Based on "C++ Atomic Types and Operations" by Hans Boehm and Lawrence Crowl. // http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2427.html #ifndef _GLIBCXX_ATOMIC #define _GLIBCXX_ATOMIC 1 #pragma GCC system_header #if __cplusplus < 201103L # include <bits/c++0x_warning.h> #endif #include <bits/atomic_base.h> namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION /** * @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); } bool operator=(bool __i) volatile 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(); } void store(bool __i, memory_order __m = memory_order_seq_cst) noexcept { _M_base.store(__i, __m); } void store(bool __i, memory_order __m = memory_order_seq_cst) volatile noexcept { _M_base.store(__i, __m); } bool load(memory_order __m = memory_order_seq_cst) const noexcept { return _M_base.load(__m); } bool load(memory_order __m = memory_order_seq_cst) const volatile noexcept { return _M_base.load(__m); } bool exchange(bool __i, memory_order __m = memory_order_seq_cst) noexcept { return _M_base.exchange(__i, __m); } bool exchange(bool __i, memory_order __m = memory_order_seq_cst) volatile noexcept { return _M_base.exchange(__i, __m); } 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); } 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); } 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); } 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); } 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); } 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); } 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); } 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); } }; /** * @brief Generic atomic type, primary class template. * * @tparam _Tp Type to be made atomic, must be trivally copyable. */ 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), nullptr); } bool is_lock_free() const volatile noexcept { return __atomic_is_lock_free(sizeof(_M_i), nullptr); } void store(_Tp __i, memory_order _m = memory_order_seq_cst) noexcept { __atomic_store(&_M_i, &__i, _m); } void store(_Tp __i, memory_order _m = memory_order_seq_cst) volatile noexcept { __atomic_store(&_M_i, &__i, _m); } _Tp load(memory_order _m = memory_order_seq_cst) const noexcept { _Tp tmp; __atomic_load(&_M_i, &tmp, _m); return tmp; } _Tp load(memory_order _m = memory_order_seq_cst) const volatile noexcept { _Tp tmp; __atomic_load(&_M_i, &tmp, _m); return tmp; } _Tp exchange(_Tp __i, memory_order _m = memory_order_seq_cst) noexcept { _Tp tmp; __atomic_exchange(&_M_i, &__i, &tmp, _m); return tmp; } _Tp exchange(_Tp __i, memory_order _m = memory_order_seq_cst) volatile noexcept { _Tp tmp; __atomic_exchange(&_M_i, &__i, &tmp, _m); return tmp; } 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); } 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); } bool compare_exchange_weak(_Tp& __e, _Tp __i, memory_order __m = memory_order_seq_cst) noexcept { return compare_exchange_weak(__e, __i, __m, __m); } 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); } 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); } 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); } bool compare_exchange_strong(_Tp& __e, _Tp __i, memory_order __m = memory_order_seq_cst) noexcept { return compare_exchange_strong(__e, __i, __m, __m); } 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(); } void store(__pointer_type __p, memory_order __m = memory_order_seq_cst) noexcept { return _M_b.store(__p, __m); } void store(__pointer_type __p, memory_order __m = memory_order_seq_cst) volatile noexcept { return _M_b.store(__p, __m); } __pointer_type load(memory_order __m = memory_order_seq_cst) const noexcept { return _M_b.load(__m); } __pointer_type load(memory_order __m = memory_order_seq_cst) const volatile noexcept { return _M_b.load(__m); } __pointer_type exchange(__pointer_type __p, memory_order __m = memory_order_seq_cst) noexcept { return _M_b.exchange(__p, __m); } __pointer_type exchange(__pointer_type __p, memory_order __m = memory_order_seq_cst) volatile noexcept { return _M_b.exchange(__p, __m); } 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); } 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); } 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, __cmpexch_failure_order(__m)); } 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, __cmpexch_failure_order(__m)); } 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); } 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); } 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, __cmpexch_failure_order(__m)); } 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, __cmpexch_failure_order(__m)); } __pointer_type fetch_add(ptrdiff_t __d, memory_order __m = memory_order_seq_cst) noexcept { return _M_b.fetch_add(__d, __m); } __pointer_type fetch_add(ptrdiff_t __d, memory_order __m = memory_order_seq_cst) volatile noexcept { return _M_b.fetch_add(__d, __m); } __pointer_type fetch_sub(ptrdiff_t __d, memory_order __m = memory_order_seq_cst) noexcept { return _M_b.fetch_sub(__d, __m); } __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; typedef atomic_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> : public atomic_char32_t { typedef char32_t __integral_type; typedef atomic_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=; }; // 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; template<typename _ITp> inline void atomic_init(volatile atomic<_ITp>* __a, _ITp __i) noexcept; 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); } template<typename _ITp> inline bool atomic_compare_exchange_weak(atomic<_ITp>* __a, _ITp* __i1, _ITp __i2) noexcept { return atomic_compare_exchange_weak_explicit(__a, __i1, __i2, memory_order_seq_cst, memory_order_seq_cst); } template<typename _ITp> inline bool atomic_compare_exchange_weak(volatile atomic<_ITp>* __a, _ITp* __i1, _ITp __i2) noexcept { return atomic_compare_exchange_weak_explicit(__a, __i1, __i2, memory_order_seq_cst, memory_order_seq_cst); } template<typename _ITp> inline bool atomic_compare_exchange_strong(atomic<_ITp>* __a, _ITp* __i1, _ITp __i2) noexcept { return atomic_compare_exchange_strong_explicit(__a, __i1, __i2, memory_order_seq_cst, memory_order_seq_cst); } template<typename _ITp> inline bool atomic_compare_exchange_strong(volatile atomic<_ITp>* __a, _ITp* __i1, _ITp __i2) noexcept { return atomic_compare_exchange_strong_explicit(__a, __i1, __i2, memory_order_seq_cst, memory_order_seq_cst); } // 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> inline _ITp 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 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
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