template< class T > bool atomic_compare_exchange_weak_explicit( std::atomic<T>* obj, T* expected, T desired, std::memory_order succ, std::memory_order fail ); template< class T > bool atomic_compare_exchange_weak_explicit( volatile std::atomic<T>* obj, T* expected, T desired...
template< class T > bool atomic_compare_exchange_weak_explicit( std::atomic<T>* obj, T* expected, T desired, std::memory_order succ, std::memory_order fail ); template< class T > bool atomic_compare_exchange_weak_explicit( volatile std::atomic<T>* obj, T* expected, T desired...
std::atomic_compare_exchange_weak_explicit( &head, &new_node->next, new_node,std::memory_order_release,std::memory_order_relaxed)) ; // 循环体为空 // 注意:上述循环非线程安全,至少在 // 早于 4.8.3 的 GCC ( bug 60272 ),早于 2014-05-05 的 clang ( bug 18899) // 早于 2014-03...
std::atomic<int> is not lock-free std::atomic_flag 是 C++ 中的一个原子布尔类型,它用于实现原子锁操作。 std::atomic_flag 默认是清除状态(false)。可以使用 ATOMIC_FLAG_INIT 宏进行初始化,例如:std::atomic_flag flag = ATOMIC_FLAG_INIT; std::atomic_flag 提供了两个成员函数 test_and_set()...
typename std::atomic<T>::value_type* expected, typename std::atomic<T>::value_type desired ) noexcept; template< class T > bool atomic_compare_exchange_weak( volatile std::atomic<T>* obj, typename std::atomic<T>::value_type* expected, typename std::atomic<T>::value_type desired )...
boolatomic_compare_exchange_weak (volatilestd::atomic<T>*obj, typenamestd::atomic<T>::value_type*expected, typenamestd::atomic<T>::value_typedesired)noexcept; (2)(C++11 起) template<classT> boolatomic_compare_exchange_strong (std::atomic<T>*obj,typenamestd::atomic<T>::value_type*expected...
head.compare_exchange_weak(old_head, new_node, // std::memory_order_release, // std::memory_order_relaxed)); } }; int main() { stack<int> s; s.push(1); s.push(2); s.push(3); }演示compare_exchange_strong 如何要么更改原子对象的值,要么将变量用于比较。
std::atomic_ref<T>::compare_exchange_weak,std::atomic_ref<T>::compare_exchange_strong boolcompare_exchange_weak (value_type&expected, value_type desired, std::memory_ordersuccess, std::memory_orderfailure)constnoexcept; (1)(constexpr since C++26) ...
compare_exchange_weak, std::atomic<T>::compare_exchange_strong C++ 并发支持库 std::atomic bool compare_exchange_weak( T& expected, T desired, std::memory_order success, std::memory_order failure ) noexcept; (1) (C++11 起) bool compare_exchange_weak( T& expected, T desired, std::...
boolatomic_compare_exchange_weak_explicit (volatilestd::atomic<T>*obj, typenamestd::atomic<T>::value_type*expected, typenamestd::atomic<T>::value_typedesired, std::memory_ordersuccess,std::memory_orderfailure)noexcept; (6)(since C++11) ...