/
/
usr
/
include
/
c++
/
11
EDITOR
/usr/include/c++/11/atomic
SAVE
CLOSE
// -*- C++ -*- header. // Copyright (C) 2008-2021 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> #else #include <bits/atomic_base.h> namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION /** * @addtogroup atomics * @{ */ #if __cplusplus >= 201703L # define __cpp_lib_atomic_is_always_lock_free 201603 #endif template<typename _Tp> struct atomic; /// atomic<bool> // NB: No operators or fetch-operations for this type. template<> struct atomic<bool> { using value_type = bool; private: __atomic_base<bool> _M_base; public: atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(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(); } #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_BOOL_LOCK_FREE == 2; #endif 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); } #if __cpp_lib_atomic_wait void wait(bool __old, memory_order __m = memory_order_seq_cst) const noexcept { _M_base.wait(__old, __m); } // TODO add const volatile overload void notify_one() noexcept { _M_base.notify_one(); } void notify_all() noexcept { _M_base.notify_all(); } #endif // __cpp_lib_atomic_wait }; #if __cplusplus <= 201703L # define _GLIBCXX20_INIT(I) #else # define _GLIBCXX20_INIT(I) = I #endif /** * @brief Generic atomic type, primary class template. * * @tparam _Tp Type to be made atomic, must be trivially copyable. */ template<typename _Tp> struct atomic { using value_type = _Tp; private: // Align 1/2/4/8/16-byte types to at least their size. static constexpr int _S_min_alignment = (sizeof(_Tp) & (sizeof(_Tp) - 1)) || sizeof(_Tp) > 16 ? 0 : sizeof(_Tp); static constexpr int _S_alignment = _S_min_alignment > alignof(_Tp) ? _S_min_alignment : alignof(_Tp); alignas(_S_alignment) _Tp _M_i _GLIBCXX20_INIT(_Tp()); static_assert(__is_trivially_copyable(_Tp), "std::atomic requires a trivially copyable type"); static_assert(sizeof(_Tp) > 0, "Incomplete or zero-sized types are not supported"); #if __cplusplus > 201703L static_assert(is_copy_constructible_v<_Tp>); static_assert(is_move_constructible_v<_Tp>); static_assert(is_copy_assignable_v<_Tp>); static_assert(is_move_assignable_v<_Tp>); #endif public: atomic() = 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 { // Produce a fake, minimally aligned pointer. return __atomic_is_lock_free(sizeof(_M_i), reinterpret_cast<void *>(-_S_alignment)); } bool is_lock_free() const volatile noexcept { // Produce a fake, minimally aligned pointer. return __atomic_is_lock_free(sizeof(_M_i), reinterpret_cast<void *>(-_S_alignment)); } #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = __atomic_always_lock_free(sizeof(_M_i), 0); #endif void store(_Tp __i, memory_order __m = memory_order_seq_cst) noexcept { __atomic_store(std::__addressof(_M_i), std::__addressof(__i), int(__m)); } void store(_Tp __i, memory_order __m = memory_order_seq_cst) volatile noexcept { __atomic_store(std::__addressof(_M_i), std::__addressof(__i), int(__m)); } _Tp load(memory_order __m = memory_order_seq_cst) const noexcept { alignas(_Tp) unsigned char __buf[sizeof(_Tp)]; _Tp* __ptr = reinterpret_cast<_Tp*>(__buf); __atomic_load(std::__addressof(_M_i), __ptr, int(__m)); return *__ptr; } _Tp load(memory_order __m = memory_order_seq_cst) const volatile noexcept { alignas(_Tp) unsigned char __buf[sizeof(_Tp)]; _Tp* __ptr = reinterpret_cast<_Tp*>(__buf); __atomic_load(std::__addressof(_M_i), __ptr, int(__m)); return *__ptr; } _Tp exchange(_Tp __i, memory_order __m = memory_order_seq_cst) noexcept { alignas(_Tp) unsigned char __buf[sizeof(_Tp)]; _Tp* __ptr = reinterpret_cast<_Tp*>(__buf); __atomic_exchange(std::__addressof(_M_i), std::__addressof(__i), __ptr, int(__m)); return *__ptr; } _Tp exchange(_Tp __i, memory_order __m = memory_order_seq_cst) volatile noexcept { alignas(_Tp) unsigned char __buf[sizeof(_Tp)]; _Tp* __ptr = reinterpret_cast<_Tp*>(__buf); __atomic_exchange(std::__addressof(_M_i), std::__addressof(__i), __ptr, int(__m)); return *__ptr; } bool compare_exchange_weak(_Tp& __e, _Tp __i, memory_order __s, memory_order __f) noexcept { __glibcxx_assert(__is_valid_cmpexch_failure_order(__f)); return __atomic_compare_exchange(std::__addressof(_M_i), std::__addressof(__e), std::__addressof(__i), true, int(__s), int(__f)); } bool compare_exchange_weak(_Tp& __e, _Tp __i, memory_order __s, memory_order __f) volatile noexcept { __glibcxx_assert(__is_valid_cmpexch_failure_order(__f)); return __atomic_compare_exchange(std::__addressof(_M_i), std::__addressof(__e), std::__addressof(__i), true, int(__s), int(__f)); } bool compare_exchange_weak(_Tp& __e, _Tp __i, memory_order __m = memory_order_seq_cst) noexcept { return compare_exchange_weak(__e, __i, __m, __cmpexch_failure_order(__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, __cmpexch_failure_order(__m)); } bool compare_exchange_strong(_Tp& __e, _Tp __i, memory_order __s, memory_order __f) noexcept { __glibcxx_assert(__is_valid_cmpexch_failure_order(__f)); return __atomic_compare_exchange(std::__addressof(_M_i), std::__addressof(__e), std::__addressof(__i), false, int(__s), int(__f)); } bool compare_exchange_strong(_Tp& __e, _Tp __i, memory_order __s, memory_order __f) volatile noexcept { __glibcxx_assert(__is_valid_cmpexch_failure_order(__f)); return __atomic_compare_exchange(std::__addressof(_M_i), std::__addressof(__e), std::__addressof(__i), false, int(__s), int(__f)); } bool compare_exchange_strong(_Tp& __e, _Tp __i, memory_order __m = memory_order_seq_cst) noexcept { return compare_exchange_strong(__e, __i, __m, __cmpexch_failure_order(__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, __cmpexch_failure_order(__m)); } #if __cpp_lib_atomic_wait void wait(_Tp __old, memory_order __m = memory_order_seq_cst) const noexcept { std::__atomic_wait_address_v(&_M_i, __old, [__m, this] { return this->load(__m); }); } // TODO add const volatile overload void notify_one() noexcept { std::__atomic_notify_address(&_M_i, false); } void notify_all() noexcept { std::__atomic_notify_address(&_M_i, true); } #endif // __cpp_lib_atomic_wait }; #undef _GLIBCXX20_INIT /// Partial specialization for pointer types. template<typename _Tp> struct atomic<_Tp*> { using value_type = _Tp*; using difference_type = ptrdiff_t; 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 { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b++; } __pointer_type operator++(int) volatile noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b++; } __pointer_type operator--(int) noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b--; } __pointer_type operator--(int) volatile noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b--; } __pointer_type operator++() noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return ++_M_b; } __pointer_type operator++() volatile noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return ++_M_b; } __pointer_type operator--() noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return --_M_b; } __pointer_type operator--() volatile noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return --_M_b; } __pointer_type operator+=(ptrdiff_t __d) noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b.operator+=(__d); } __pointer_type operator+=(ptrdiff_t __d) volatile noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b.operator+=(__d); } __pointer_type operator-=(ptrdiff_t __d) noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b.operator-=(__d); } __pointer_type operator-=(ptrdiff_t __d) volatile noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif 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(); } #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_POINTER_LOCK_FREE == 2; #endif 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)); } #if __cpp_lib_atomic_wait void wait(__pointer_type __old, memory_order __m = memory_order_seq_cst) const noexcept { _M_b.wait(__old, __m); } // TODO add const volatile overload void notify_one() noexcept { _M_b.notify_one(); } void notify_all() noexcept { _M_b.notify_all(); } #endif // __cpp_lib_atomic_wait __pointer_type fetch_add(ptrdiff_t __d, memory_order __m = memory_order_seq_cst) noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b.fetch_add(__d, __m); } __pointer_type fetch_add(ptrdiff_t __d, memory_order __m = memory_order_seq_cst) volatile noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b.fetch_add(__d, __m); } __pointer_type fetch_sub(ptrdiff_t __d, memory_order __m = memory_order_seq_cst) noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b.fetch_sub(__d, __m); } __pointer_type fetch_sub(ptrdiff_t __d, memory_order __m = memory_order_seq_cst) volatile noexcept { #if __cplusplus >= 201703L static_assert( is_object<_Tp>::value, "pointer to object type" ); #endif return _M_b.fetch_sub(__d, __m); } }; /// Explicit specialization for char. template<> struct atomic<char> : __atomic_base<char> { typedef char __integral_type; typedef __atomic_base<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=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_CHAR_LOCK_FREE == 2; #endif }; /// Explicit specialization for signed char. template<> struct atomic<signed char> : __atomic_base<signed char> { typedef signed char __integral_type; typedef __atomic_base<signed char> __base_type; atomic() noexcept= default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_CHAR_LOCK_FREE == 2; #endif }; /// Explicit specialization for unsigned char. template<> struct atomic<unsigned char> : __atomic_base<unsigned char> { typedef unsigned char __integral_type; typedef __atomic_base<unsigned char> __base_type; atomic() noexcept= default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_CHAR_LOCK_FREE == 2; #endif }; /// Explicit specialization for short. template<> struct atomic<short> : __atomic_base<short> { typedef short __integral_type; typedef __atomic_base<short> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_SHORT_LOCK_FREE == 2; #endif }; /// Explicit specialization for unsigned short. template<> struct atomic<unsigned short> : __atomic_base<unsigned short> { typedef unsigned short __integral_type; typedef __atomic_base<unsigned short> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_SHORT_LOCK_FREE == 2; #endif }; /// Explicit specialization for int. template<> struct atomic<int> : __atomic_base<int> { typedef int __integral_type; typedef __atomic_base<int> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_INT_LOCK_FREE == 2; #endif }; /// Explicit specialization for unsigned int. template<> struct atomic<unsigned int> : __atomic_base<unsigned int> { typedef unsigned int __integral_type; typedef __atomic_base<unsigned int> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_INT_LOCK_FREE == 2; #endif }; /// Explicit specialization for long. template<> struct atomic<long> : __atomic_base<long> { typedef long __integral_type; typedef __atomic_base<long> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_LONG_LOCK_FREE == 2; #endif }; /// Explicit specialization for unsigned long. template<> struct atomic<unsigned long> : __atomic_base<unsigned long> { typedef unsigned long __integral_type; typedef __atomic_base<unsigned long> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_LONG_LOCK_FREE == 2; #endif }; /// Explicit specialization for long long. template<> struct atomic<long long> : __atomic_base<long long> { typedef long long __integral_type; typedef __atomic_base<long long> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_LLONG_LOCK_FREE == 2; #endif }; /// Explicit specialization for unsigned long long. template<> struct atomic<unsigned long long> : __atomic_base<unsigned long long> { typedef unsigned long long __integral_type; typedef __atomic_base<unsigned long long> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_LLONG_LOCK_FREE == 2; #endif }; /// Explicit specialization for wchar_t. template<> struct atomic<wchar_t> : __atomic_base<wchar_t> { typedef wchar_t __integral_type; typedef __atomic_base<wchar_t> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_WCHAR_T_LOCK_FREE == 2; #endif }; #ifdef _GLIBCXX_USE_CHAR8_T /// Explicit specialization for char8_t. template<> struct atomic<char8_t> : __atomic_base<char8_t> { typedef char8_t __integral_type; typedef __atomic_base<char8_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=; #if __cplusplus > 201402L static constexpr bool is_always_lock_free = ATOMIC_CHAR8_T_LOCK_FREE == 2; #endif }; #endif /// Explicit specialization for char16_t. template<> struct atomic<char16_t> : __atomic_base<char16_t> { typedef char16_t __integral_type; typedef __atomic_base<char16_t> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_CHAR16_T_LOCK_FREE == 2; #endif }; /// Explicit specialization for char32_t. template<> struct atomic<char32_t> : __atomic_base<char32_t> { typedef char32_t __integral_type; typedef __atomic_base<char32_t> __base_type; atomic() noexcept = default; ~atomic() noexcept = default; atomic(const atomic&) = delete; atomic& operator=(const atomic&) = delete; atomic& operator=(const atomic&) volatile = delete; constexpr atomic(__integral_type __i) noexcept : __base_type(__i) { } using __base_type::operator __integral_type; using __base_type::operator=; #if __cplusplus >= 201703L static constexpr bool is_always_lock_free = ATOMIC_CHAR32_T_LOCK_FREE == 2; #endif }; /// atomic_bool typedef atomic<bool> atomic_bool; /// atomic_char typedef atomic<char> atomic_char; /// atomic_schar typedef atomic<signed char> atomic_schar; /// atomic_uchar typedef atomic<unsigned char> atomic_uchar; /// atomic_short typedef atomic<short> atomic_short; /// atomic_ushort typedef atomic<unsigned short> atomic_ushort; /// atomic_int typedef atomic<int> atomic_int; /// atomic_uint typedef atomic<unsigned int> atomic_uint; /// atomic_long typedef atomic<long> atomic_long; /// atomic_ulong typedef atomic<unsigned long> atomic_ulong; /// atomic_llong typedef atomic<long long> atomic_llong; /// atomic_ullong typedef atomic<unsigned long long> atomic_ullong; /// atomic_wchar_t typedef atomic<wchar_t> atomic_wchar_t; #ifdef _GLIBCXX_USE_CHAR8_T /// atomic_char8_t typedef atomic<char8_t> atomic_char8_t; #endif /// atomic_char16_t typedef atomic<char16_t> atomic_char16_t; /// atomic_char32_t typedef atomic<char32_t> atomic_char32_t; #ifdef _GLIBCXX_USE_C99_STDINT_TR1 // _GLIBCXX_RESOLVE_LIB_DEFECTS // 2441. Exact-width atomic typedefs should be provided /// atomic_int8_t typedef atomic<int8_t> atomic_int8_t; /// atomic_uint8_t typedef atomic<uint8_t> atomic_uint8_t; /// atomic_int16_t typedef atomic<int16_t> atomic_int16_t; /// atomic_uint16_t typedef atomic<uint16_t> atomic_uint16_t; /// atomic_int32_t typedef atomic<int32_t> atomic_int32_t; /// atomic_uint32_t typedef atomic<uint32_t> atomic_uint32_t; /// atomic_int64_t typedef atomic<int64_t> atomic_int64_t; /// atomic_uint64_t typedef atomic<uint64_t> atomic_uint64_t; /// atomic_int_least8_t typedef atomic<int_least8_t> atomic_int_least8_t; /// atomic_uint_least8_t typedef atomic<uint_least8_t> atomic_uint_least8_t; /// atomic_int_least16_t typedef atomic<int_least16_t> atomic_int_least16_t; /// atomic_uint_least16_t typedef atomic<uint_least16_t> atomic_uint_least16_t; /// atomic_int_least32_t typedef atomic<int_least32_t> atomic_int_least32_t; /// atomic_uint_least32_t typedef atomic<uint_least32_t> atomic_uint_least32_t; /// atomic_int_least64_t typedef atomic<int_least64_t> atomic_int_least64_t; /// atomic_uint_least64_t typedef atomic<uint_least64_t> atomic_uint_least64_t; /// atomic_int_fast8_t typedef atomic<int_fast8_t> atomic_int_fast8_t; /// atomic_uint_fast8_t typedef atomic<uint_fast8_t> atomic_uint_fast8_t; /// atomic_int_fast16_t typedef atomic<int_fast16_t> atomic_int_fast16_t; /// atomic_uint_fast16_t typedef atomic<uint_fast16_t> atomic_uint_fast16_t; /// atomic_int_fast32_t typedef atomic<int_fast32_t> atomic_int_fast32_t; /// atomic_uint_fast32_t typedef atomic<uint_fast32_t> atomic_uint_fast32_t; /// atomic_int_fast64_t typedef atomic<int_fast64_t> atomic_int_fast64_t; /// atomic_uint_fast64_t typedef atomic<uint_fast64_t> atomic_uint_fast64_t; #endif /// atomic_intptr_t typedef atomic<intptr_t> atomic_intptr_t; /// atomic_uintptr_t typedef atomic<uintptr_t> atomic_uintptr_t; /// atomic_size_t typedef atomic<size_t> atomic_size_t; /// atomic_ptrdiff_t typedef atomic<ptrdiff_t> atomic_ptrdiff_t; #ifdef _GLIBCXX_USE_C99_STDINT_TR1 /// atomic_intmax_t typedef atomic<intmax_t> atomic_intmax_t; /// atomic_uintmax_t typedef atomic<uintmax_t> atomic_uintmax_t; #endif // 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); } #if __cpp_lib_atomic_flag_test inline bool atomic_flag_test(const atomic_flag* __a) noexcept { return __a->test(); } inline bool atomic_flag_test(const volatile atomic_flag* __a) noexcept { return __a->test(); } inline bool atomic_flag_test_explicit(const atomic_flag* __a, memory_order __m) noexcept { return __a->test(__m); } inline bool atomic_flag_test_explicit(const volatile atomic_flag* __a, memory_order __m) noexcept { return __a->test(__m); } #endif 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); } #if __cpp_lib_atomic_wait inline void atomic_flag_wait(atomic_flag* __a, bool __old) noexcept { __a->wait(__old); } inline void atomic_flag_wait_explicit(atomic_flag* __a, bool __old, memory_order __m) noexcept { __a->wait(__old, __m); } inline void atomic_flag_notify_one(atomic_flag* __a) noexcept { __a->notify_one(); } inline void atomic_flag_notify_all(atomic_flag* __a) noexcept { __a->notify_all(); } #endif // __cpp_lib_atomic_wait /// @cond undocumented // _GLIBCXX_RESOLVE_LIB_DEFECTS // 3220. P0558 broke conforming C++14 uses of atomic shared_ptr template<typename _Tp> using __atomic_val_t = __type_identity_t<_Tp>; template<typename _Tp> using __atomic_diff_t = typename atomic<_Tp>::difference_type; /// @endcond // [atomics.nonmembers] Non-member functions. // 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, __atomic_val_t<_ITp> __i) noexcept { __a->store(__i, memory_order_relaxed); } template<typename _ITp> inline void atomic_init(volatile atomic<_ITp>* __a, __atomic_val_t<_ITp> __i) noexcept { __a->store(__i, memory_order_relaxed); } template<typename _ITp> inline void atomic_store_explicit(atomic<_ITp>* __a, __atomic_val_t<_ITp> __i, memory_order __m) noexcept { __a->store(__i, __m); } template<typename _ITp> inline void atomic_store_explicit(volatile atomic<_ITp>* __a, __atomic_val_t<_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, __atomic_val_t<_ITp> __i, memory_order __m) noexcept { return __a->exchange(__i, __m); } template<typename _ITp> inline _ITp atomic_exchange_explicit(volatile atomic<_ITp>* __a, __atomic_val_t<_ITp> __i, memory_order __m) noexcept { return __a->exchange(__i, __m); } template<typename _ITp> inline bool atomic_compare_exchange_weak_explicit(atomic<_ITp>* __a, __atomic_val_t<_ITp>* __i1, __atomic_val_t<_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, __atomic_val_t<_ITp>* __i1, __atomic_val_t<_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, __atomic_val_t<_ITp>* __i1, __atomic_val_t<_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, __atomic_val_t<_ITp>* __i1, __atomic_val_t<_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, __atomic_val_t<_ITp> __i) noexcept { atomic_store_explicit(__a, __i, memory_order_seq_cst); } template<typename _ITp> inline void atomic_store(volatile atomic<_ITp>* __a, __atomic_val_t<_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, __atomic_val_t<_ITp> __i) noexcept { return atomic_exchange_explicit(__a, __i, memory_order_seq_cst); } template<typename _ITp> inline _ITp atomic_exchange(volatile atomic<_ITp>* __a, __atomic_val_t<_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, __atomic_val_t<_ITp>* __i1, __atomic_val_t<_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, __atomic_val_t<_ITp>* __i1, __atomic_val_t<_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, __atomic_val_t<_ITp>* __i1, __atomic_val_t<_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, __atomic_val_t<_ITp>* __i1, __atomic_val_t<_ITp> __i2) noexcept { return atomic_compare_exchange_strong_explicit(__a, __i1, __i2, memory_order_seq_cst, memory_order_seq_cst); } #if __cpp_lib_atomic_wait template<typename _Tp> inline void atomic_wait(const atomic<_Tp>* __a, typename std::atomic<_Tp>::value_type __old) noexcept { __a->wait(__old); } template<typename _Tp> inline void atomic_wait_explicit(const atomic<_Tp>* __a, typename std::atomic<_Tp>::value_type __old, std::memory_order __m) noexcept { __a->wait(__old, __m); } template<typename _Tp> inline void atomic_notify_one(atomic<_Tp>* __a) noexcept { __a->notify_one(); } template<typename _Tp> inline void atomic_notify_all(atomic<_Tp>* __a) noexcept { __a->notify_all(); } #endif // __cpp_lib_atomic_wait // Function templates for atomic_integral and atomic_pointer operations only. // Some operations (and, or, xor) are only available for atomic integrals, // which is implemented by taking a parameter of type __atomic_base<_ITp>*. template<typename _ITp> inline _ITp atomic_fetch_add_explicit(atomic<_ITp>* __a, __atomic_diff_t<_ITp> __i, memory_order __m) noexcept { return __a->fetch_add(__i, __m); } template<typename _ITp> inline _ITp atomic_fetch_add_explicit(volatile atomic<_ITp>* __a, __atomic_diff_t<_ITp> __i, memory_order __m) noexcept { return __a->fetch_add(__i, __m); } template<typename _ITp> inline _ITp atomic_fetch_sub_explicit(atomic<_ITp>* __a, __atomic_diff_t<_ITp> __i, memory_order __m) noexcept { return __a->fetch_sub(__i, __m); } template<typename _ITp> inline _ITp atomic_fetch_sub_explicit(volatile atomic<_ITp>* __a, __atomic_diff_t<_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, __atomic_val_t<_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, __atomic_val_t<_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, __atomic_val_t<_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, __atomic_val_t<_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, __atomic_val_t<_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, __atomic_val_t<_ITp> __i, memory_order __m) noexcept { return __a->fetch_xor(__i, __m); } template<typename _ITp> inline _ITp atomic_fetch_add(atomic<_ITp>* __a, __atomic_diff_t<_ITp> __i) noexcept { return atomic_fetch_add_explicit(__a, __i, memory_order_seq_cst); } template<typename _ITp> inline _ITp atomic_fetch_add(volatile atomic<_ITp>* __a, __atomic_diff_t<_ITp> __i) noexcept { return atomic_fetch_add_explicit(__a, __i, memory_order_seq_cst); } template<typename _ITp> inline _ITp atomic_fetch_sub(atomic<_ITp>* __a, __atomic_diff_t<_ITp> __i) noexcept { return atomic_fetch_sub_explicit(__a, __i, memory_order_seq_cst); } template<typename _ITp> inline _ITp atomic_fetch_sub(volatile atomic<_ITp>* __a, __atomic_diff_t<_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, __atomic_val_t<_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, __atomic_val_t<_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, __atomic_val_t<_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, __atomic_val_t<_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, __atomic_val_t<_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, __atomic_val_t<_ITp> __i) noexcept { return atomic_fetch_xor_explicit(__a, __i, memory_order_seq_cst); } #if __cplusplus > 201703L #define __cpp_lib_atomic_float 201711L template<> struct atomic<float> : __atomic_float<float> { atomic() noexcept = default; constexpr atomic(float __fp) noexcept : __atomic_float<float>(__fp) { } atomic& operator=(const atomic&) volatile = delete; atomic& operator=(const atomic&) = delete; using __atomic_float<float>::operator=; }; template<> struct atomic<double> : __atomic_float<double> { atomic() noexcept = default; constexpr atomic(double __fp) noexcept : __atomic_float<double>(__fp) { } atomic& operator=(const atomic&) volatile = delete; atomic& operator=(const atomic&) = delete; using __atomic_float<double>::operator=; }; template<> struct atomic<long double> : __atomic_float<long double> { atomic() noexcept = default; constexpr atomic(long double __fp) noexcept : __atomic_float<long double>(__fp) { } atomic& operator=(const atomic&) volatile = delete; atomic& operator=(const atomic&) = delete; using __atomic_float<long double>::operator=; }; #define __cpp_lib_atomic_ref 201806L /// Class template to provide atomic operations on a non-atomic variable. template<typename _Tp> struct atomic_ref : __atomic_ref<_Tp> { explicit atomic_ref(_Tp& __t) noexcept : __atomic_ref<_Tp>(__t) { } atomic_ref& operator=(const atomic_ref&) = delete; atomic_ref(const atomic_ref&) = default; using __atomic_ref<_Tp>::operator=; }; #endif // C++2a /// @} group atomics _GLIBCXX_END_NAMESPACE_VERSION } // namespace #endif // C++11 #endif // _GLIBCXX_ATOMIC
Ln 1, Col 1
FORMAT
WRAP
SAVE FILE
ONLINE
11
118 items
22:00:34
TERMINAL FM
×
NAVIGATION
Root
Parent Dir
Refresh
ACTIONS
New Folder
New File
Upload Files
New Symlink
SELECTION
Select All
Deselect
Delete Selected
NEW FOLDER
FOLDER NAME
NEW FILE
FILE NAME
UPLOAD FILES
Click to browse or drag & drop files
No files selected
RENAME
CURRENT NAME
NEW NAME
COPY FILE
SOURCE
DESTINATION NAME
CHMOD
FILE / FOLDER
CURRENT PERMISSIONS
NEW MODE (octal)
755 (rwxr-xr-x)
644 (rw-r--r--)
777 (rwxrwxrwx)
600 (rw-------)
444 (r--r--r--)
CONFIRM DELETE
You are about to delete:
This action is irreversible. All contents will be permanently removed.
NEW SYMLINK
LINK TARGET (path)
LINK NAME
Edit
Preview
Download
Rename
Copy
Chmod
Delete