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...
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 ...
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; ...
synclist_item<T>* prevLast = m_last.exchange(tmpItm, boost::memory_order_consume); tmpItm = itm; synclist_item<T>* null =NULL; m_first.compare_exchange_strong(null, tmpItm, boost::memory_order_consume, boost::memory_order_acquire);if(prevLast !=NULL) { prevLast->next.store(itm,...
compare_exchange_strong 其位于atomic库中http://www.cplusplus.com/reference/atomic/atomic/ 2.2 std::atomic的使用 定义一个原子对象,以链表Node为例: structNode{ intvalue; Node *next; }; std::atomic<Node *> list_head; atomic中的主要方法有: ...
bool A ::compare_exchange_strong(C & expected, C desired, memory_order success, memory_order failure) volatile noexcept; bool A ::compare_exchange_strong(C & expected, C desired, memory_order success, memory_order failure) noexcept; bool A ::compare_exchange_strong(C & expected, C desire...
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,...
compare_exchange_strong函数直接比较所包含值的物理内容，这可能会导致对相等使用的值进行比较失败（如果...
atomic_compare_exchange 分为两个版本 atomic_compare_exchange_strong 和 atomic_compare_exchange_weak,语义如下 boolatomic_compare_exchange(volatileA *obj, C*expected, C desired, memory_order succ, memory_order fail ); { fence_before(succ);//fence 1if(*obj ==expected) ...
(mtx);intold_value=data;data+=val;returnold_value;}intexchange(intval){std::lock_guardlk(mtx);intold_value=data;data=val;returnold_value;}boolcompare_exchange_strong(int&old_value,intval){std::lock_guardlk(mtx);if(data==old_value){data=val;returntrue;}else{old_value=data;returnfalse...