Web1) 原子地释放 lock ，阻塞当前线程，并将它添加到等待在 *this 上的线程列表。 将在执行 notify_all () 或 notify_one () 时，或抵达绝对时间点 timeout_time 时解除阻塞线程。 亦可能虚假地解除阻塞。 解除阻塞时，无关缘由，重获得 lock 并退出 wait_for () 。 若此函数通过异常退出，则亦重获得 lock 。 (C++14 前) 2) 等价于 while (! pred ()) { if ( wait_until ( … WebJan 7, 2024 · wait causes the current thread to block until the condition variable is notified or a spurious wakeup occurs, optionally looping until some predicate is satisfied (bool …
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WebMar 14, 2024 · condition_variable wait是C++中的一个线程同步机制，用于等待条件变量的状态发生变化。当线程调用wait函数时，它会被阻塞，直到另一个线程调用notify_one或notify_all函数来通知条件变量的状态发生了改变。 http://www.gerald-fahrnholz.eu/sw/online_doc_multithreading/html/group___grp_condition_variable_safe_way.html msrp mercedes s550
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WebThe class condition_variable provides a mechanism for a fiber to wait for notification from another fiber. When the fiber awakens from the wait, then it checks to see if the appropriate condition is now true, and continues if so. If the condition is not true, then the fiber calls wait again to resume waiting. WebNov 22, 2016 · If thread1 got the lock, it will put an element in the queue; if thread2 was waiting, it will get notified properly; if thread2 was still waiting for the mutex, it will never wait, as there is at least one element on the queue, so losing a notify is harmless. In this manner, a notify is only lost if it was not needed in the first place. WebThe following are the main member functions of a condition variable. wait (): This function is used to block the current thread until a condition variable is woken up. notify_one (): This function is used to notify only one waiting thread. notify_all (): This function is used to notify all the waiting threads. C++: condition_variable::wait how to make japanese tempura batter