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std::atomic_flag:: notify_one

From cppreference.net

C++
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Free functions for atomic flags
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(C++20)
std::atomic_flag
void notify_one ( ) noexcept ;
(1) (自 C++20 起)
(自 C++26 起为 constexpr)
void notify_one ( ) volatile noexcept ;
(2) (自 C++20 起)

执行原子通知操作。

若存在线程在 * this 上的原子等待操作（即 wait() ）中被阻塞，则解除 至少一个 此类线程的阻塞状态；否则不执行任何操作。

注释

这种变更检测形式通常比简单轮询或纯自旋锁更高效。

示例

本节内容不完整
原因：缺少示例

参见

(C++20)
阻塞线程直至被通知且原子值发生变化
(公开成员函数)
(C++20) (C++20)
阻塞线程直至被通知且标志位发生变化
(函数)
(C++20)
通知在 atomic_flag_wait 中阻塞的线程
(函数)