在下文中一共展示了atomic::compare_exchange_strong方法的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。 示例1: try_lock ▲点赞 6▼ booltry_lock(){size_tbad_id =-1;autoThisID = _hash(std::this_thread::get_...
template <class Ty> inline bool atomic_compare_exchange_strong( volatile atomic<Ty> *Atom, Ty *Exp, Ty Value ) _NOEXCEPT; template <class Ty> inline bool atomic_compare_exchange_strong( atomic<Ty> *Atom, Ty *Exp, TyValue ) _NOEXCEPT; 参数 Atom 若要存储类型 Ty的值 atomic 对象的指针...
2.6、compare_exchange_weak函数 2.7、compare_exchange_strong函数 2.8、专业化支持的操作 三、使用示例 总结 一、简介 C++中原子变量(atomic)是一种多线程编程中常用的同步机制,它能够确保对共享变量的操作在执行时不会被其他线程的操作干扰,从而避免竞态条件(race condition)和死锁(deadlock)等问题。 原子变量可以看...
bool compare_exchange_strong( Ty& Exp, Ty Value, memory_order Order1, memory_order Order2 ) volatile _NOEXCEPT; bool compare_exchange_strong( Ty& Exp, Ty Value, memory_order Order1, memory_order Order2 ) _NOEXCEPT; bool compare_exchange_strong( Ty& Exp, Ty Value, memory_order Order1 ...
atomic_compare_exchange_strong表现为如同原子地执行下列代码: if(memcmp(obj, expected,sizeof*obj)==0)memcpy(obj,&desired,sizeof*obj);elsememcpy(expected, obj,sizeof*obj); 引用 参阅 atomic_exchangeatomic_exchange_explicit (C11) 与原子对象的值交换值 ...
template <class T> bool atomic_compare_exchange_strong (volatile atomic<T>* obj, T* expected, T val) noexcept; template <class T> bool atomic_compare_exchange_strong (atomic<T>* obj, T* expected, T val) noexcept; overloads (2) bool atomic_compare_exchange_strong (volatile A* obj,...
bool A ::compare_exchange_strong(C & expected, C desired, memory_order order = memory_order_seq_cst) volatile noexcept; bool A ::compare_exchange_strong(C & expected, C desired, memory_order order = memory_order_seq_cst) noexcept; Parameters A One of the atomic types. C The correspon...
atomic_compare_exchange_strong 表现为如同原子地执行下列代码: if (memcmp(obj, expected, sizeof *obj) == 0) { memcpy(obj, &desired, sizeof *obj); return true } else { memcpy(expected, obj, sizeof *obj); return false; }引用C11 standard (ISO/IEC 9899:2011): 7.17.7.4 The atomic_...
bool atomic_compare_exchange_strong_explicit(volatileA*object,C*expected,Cdesired, memory_ordersuccess, memory_orderfailure) noexcept; bool atomic_compare_exchange_strong_explicit(A*object,C*expected,Cdesired, memory_ordersuccess, memory_orderfailure) noexcept; ...
template< class T > bool atomic_compare_exchange_strong_explicit( volatile std::atomic<T>* obj, T* expected, T desired, std::memory_order succ, std::memory_order fail ); 原子比较对象表示所指向的对象的obj所指向的对象的对象表示形式。expected,好像std::memcmp,如果这些是按位相等的,则将...