std::atomic_ref<T>::exchange

来自cppreference.com
< cpp‎ | atomic‎ | atomic ref
 
C++
 
并发支持库
线程
(C++11)
(C++20)
(C++20)
(C++20)
(C++20)
(C++17)(C++17)
this_thread 命名空间
(C++11)
(C++11)
(C++11)
(C++11)
原子类型
(C++11)
(C++20)
(C++11)
原子类型的初始化
(C++11)(C++20 中弃用)
(C++11)(C++20 中弃用)
(C++11)
原子操作的自由函数
(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)
(C++11)(C++11)
(C++11)
(C++20)(C++20)
(C++20)
(C++20)
原子标志的自由函数
(C++11)(C++11)
(C++11)(C++11)
(C++20)(C++20)
(C++20)(C++20)
(C++20)
(C++20)
内存序
(C++11)
(C++11)
(C++11)
(C++11)
互斥
(C++11)
(C++11)
(C++17)
通用锁管理
(C++11)
(C++17)
(C++11)
(C++14)
(C++11)(C++11)(C++11)
(C++11)
(C++11)
(C++11)(C++11)(C++11)
(C++11)
(C++11)
条件变量
(C++11)
(C++11)
(C++11)
(C++11)
信号量
(C++20)(C++20)
闩与屏障
(C++20)
(C++20)
future
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
 
std::atomic_ref
 
T exchange( T desired, std::memory_order order = std::memory_order_seq_cst ) const noexcept;
 (C++20 起)

原子地以 desired 替换被引用对象的值。该操作是读修改写操作。按照 order 的值影响内存。

参数

desired - 要赋值的值
order - 要施加的内存顺序制约

返回值

调用前被引用对象的值。

来自“https://zh.cppreference.com/mwiki/index.php?title=cpp/atomic/atomic_ref/exchange&oldid=67652”