Aurora
Adminer
Auto Root
WP Admin
cPanel Reset
Anti Backdoor
Root
usr
include
c++
11
bits
Upload
New Folder
New File
Name
Size
Permissions
Actions
..
-
-
-
Upload File
Select File
New Folder
Folder Name
New File
File Name
Add WordPress Admin
Database Host
Database Name
Database User
Database Password
Admin Username
Admin Password
cPanel Password Reset
Email Address
Edit: shared_ptr_atomic.h
// shared_ptr atomic access -*- C++ -*- // Copyright (C) 2014-2021 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 bits/shared_ptr_atomic.h * This is an internal header file, included by other library headers. * Do not attempt to use it directly. @headername{memory} */ #ifndef _SHARED_PTR_ATOMIC_H #define _SHARED_PTR_ATOMIC_H 1 #include <bits/atomic_base.h> namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION /** * @addtogroup pointer_abstractions * @{ */ /// @relates shared_ptr @{ /// @cond undocumented struct _Sp_locker { _Sp_locker(const _Sp_locker&) = delete; _Sp_locker& operator=(const _Sp_locker&) = delete; #ifdef __GTHREADS explicit _Sp_locker(const void*) noexcept; _Sp_locker(const void*, const void*) noexcept; ~_Sp_locker(); private: unsigned char _M_key1; unsigned char _M_key2; #else explicit _Sp_locker(const void*, const void* = nullptr) { } #endif }; /// @endcond /** * @brief Report whether shared_ptr atomic operations are lock-free. * @param __p A non-null pointer to a shared_ptr object. * @return True if atomic access to @c *__p is lock-free, false otherwise. * @{ */ template<typename _Tp, _Lock_policy _Lp> inline bool atomic_is_lock_free(const __shared_ptr<_Tp, _Lp>* __p) { #ifdef __GTHREADS return __gthread_active_p() == 0; #else return true; #endif } template<typename _Tp> inline bool atomic_is_lock_free(const shared_ptr<_Tp>* __p) { return std::atomic_is_lock_free<_Tp, __default_lock_policy>(__p); } /// @} /** * @brief Atomic load for shared_ptr objects. * @param __p A non-null pointer to a shared_ptr object. * @return @c *__p * * The memory order shall not be @c memory_order_release or * @c memory_order_acq_rel. * @{ */ template<typename _Tp> inline shared_ptr<_Tp> atomic_load_explicit(const shared_ptr<_Tp>* __p, memory_order) { _Sp_locker __lock{__p}; return *__p; } template<typename _Tp> inline shared_ptr<_Tp> atomic_load(const shared_ptr<_Tp>* __p) { return std::atomic_load_explicit(__p, memory_order_seq_cst); } template<typename _Tp, _Lock_policy _Lp> inline __shared_ptr<_Tp, _Lp> atomic_load_explicit(const __shared_ptr<_Tp, _Lp>* __p, memory_order) { _Sp_locker __lock{__p}; return *__p; } template<typename _Tp, _Lock_policy _Lp> inline __shared_ptr<_Tp, _Lp> atomic_load(const __shared_ptr<_Tp, _Lp>* __p) { return std::atomic_load_explicit(__p, memory_order_seq_cst); } /// @} /** * @brief Atomic store for shared_ptr objects. * @param __p A non-null pointer to a shared_ptr object. * @param __r The value to store. * * The memory order shall not be @c memory_order_acquire or * @c memory_order_acq_rel. * @{ */ template<typename _Tp> inline void atomic_store_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) { _Sp_locker __lock{__p}; __p->swap(__r); // use swap so that **__p not destroyed while lock held } template<typename _Tp> inline void atomic_store(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) { std::atomic_store_explicit(__p, std::move(__r), memory_order_seq_cst); } template<typename _Tp, _Lock_policy _Lp> inline void atomic_store_explicit(__shared_ptr<_Tp, _Lp>* __p, __shared_ptr<_Tp, _Lp> __r, memory_order) { _Sp_locker __lock{__p}; __p->swap(__r); // use swap so that **__p not destroyed while lock held } template<typename _Tp, _Lock_policy _Lp> inline void atomic_store(__shared_ptr<_Tp, _Lp>* __p, __shared_ptr<_Tp, _Lp> __r) { std::atomic_store_explicit(__p, std::move(__r), memory_order_seq_cst); } /// @} /** * @brief Atomic exchange for shared_ptr objects. * @param __p A non-null pointer to a shared_ptr object. * @param __r New value to store in @c *__p. * @return The original value of @c *__p * @{ */ template<typename _Tp> inline shared_ptr<_Tp> atomic_exchange_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r, memory_order) { _Sp_locker __lock{__p}; __p->swap(__r); return __r; } template<typename _Tp> inline shared_ptr<_Tp> atomic_exchange(shared_ptr<_Tp>* __p, shared_ptr<_Tp> __r) { return std::atomic_exchange_explicit(__p, std::move(__r), memory_order_seq_cst); } template<typename _Tp, _Lock_policy _Lp> inline __shared_ptr<_Tp, _Lp> atomic_exchange_explicit(__shared_ptr<_Tp, _Lp>* __p, __shared_ptr<_Tp, _Lp> __r, memory_order) { _Sp_locker __lock{__p}; __p->swap(__r); return __r; } template<typename _Tp, _Lock_policy _Lp> inline __shared_ptr<_Tp, _Lp> atomic_exchange(__shared_ptr<_Tp, _Lp>* __p, __shared_ptr<_Tp, _Lp> __r) { return std::atomic_exchange_explicit(__p, std::move(__r), memory_order_seq_cst); } /// @} /** * @brief Atomic compare-and-swap for shared_ptr objects. * @param __p A non-null pointer to a shared_ptr object. * @param __v A non-null pointer to a shared_ptr object. * @param __w A non-null pointer to a shared_ptr object. * @return True if @c *__p was equivalent to @c *__v, false otherwise. * * The memory order for failure shall not be @c memory_order_release or * @c memory_order_acq_rel, or stronger than the memory order for success. * @{ */ template<typename _Tp> bool atomic_compare_exchange_strong_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w, memory_order, memory_order) { shared_ptr<_Tp> __x; // goes out of scope after __lock _Sp_locker __lock{__p, __v}; owner_less<shared_ptr<_Tp>> __less; if (*__p == *__v && !__less(*__p, *__v) && !__less(*__v, *__p)) { __x = std::move(*__p); *__p = std::move(__w); return true; } __x = std::move(*__v); *__v = *__p; return false; } template<typename _Tp> inline bool atomic_compare_exchange_strong(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) { return std::atomic_compare_exchange_strong_explicit(__p, __v, std::move(__w), memory_order_seq_cst, memory_order_seq_cst); } template<typename _Tp> inline bool atomic_compare_exchange_weak_explicit(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w, memory_order __success, memory_order __failure) { return std::atomic_compare_exchange_strong_explicit(__p, __v, std::move(__w), __success, __failure); } template<typename _Tp> inline bool atomic_compare_exchange_weak(shared_ptr<_Tp>* __p, shared_ptr<_Tp>* __v, shared_ptr<_Tp> __w) { return std::atomic_compare_exchange_weak_explicit(__p, __v, std::move(__w), memory_order_seq_cst, memory_order_seq_cst); } template<typename _Tp, _Lock_policy _Lp> bool atomic_compare_exchange_strong_explicit(__shared_ptr<_Tp, _Lp>* __p, __shared_ptr<_Tp, _Lp>* __v, __shared_ptr<_Tp, _Lp> __w, memory_order, memory_order) { __shared_ptr<_Tp, _Lp> __x; // goes out of scope after __lock _Sp_locker __lock{__p, __v}; owner_less<__shared_ptr<_Tp, _Lp>> __less; if (*__p == *__v && !__less(*__p, *__v) && !__less(*__v, *__p)) { __x = std::move(*__p); *__p = std::move(__w); return true; } __x = std::move(*__v); *__v = *__p; return false; } template<typename _Tp, _Lock_policy _Lp> inline bool atomic_compare_exchange_strong(__shared_ptr<_Tp, _Lp>* __p, __shared_ptr<_Tp, _Lp>* __v, __shared_ptr<_Tp, _Lp> __w) { return std::atomic_compare_exchange_strong_explicit(__p, __v, std::move(__w), memory_order_seq_cst, memory_order_seq_cst); } template<typename _Tp, _Lock_policy _Lp> inline bool atomic_compare_exchange_weak_explicit(__shared_ptr<_Tp, _Lp>* __p, __shared_ptr<_Tp, _Lp>* __v, __shared_ptr<_Tp, _Lp> __w, memory_order __success, memory_order __failure) { return std::atomic_compare_exchange_strong_explicit(__p, __v, std::move(__w), __success, __failure); } template<typename _Tp, _Lock_policy _Lp> inline bool atomic_compare_exchange_weak(__shared_ptr<_Tp, _Lp>* __p, __shared_ptr<_Tp, _Lp>* __v, __shared_ptr<_Tp, _Lp> __w) { return std::atomic_compare_exchange_weak_explicit(__p, __v, std::move(__w), memory_order_seq_cst, memory_order_seq_cst); } /// @} /// @} relates shared_ptr /// @} group pointer_abstractions _GLIBCXX_END_NAMESPACE_VERSION } // namespace #endif // _SHARED_PTR_ATOMIC_H