如果没有线程等待并发送条件信号，会发生什么？ [英] What happens if no threads are waiting and condition signal was sent?

问题描述

如果所有线程都忙，并且主线程发送线程cond信号，会发生什么？

What happens if all threads are busy and main thread has sent thread cond signal ?

1主线程和3线程池中的线程。 3个pthreads的状态为

1 Main Thread and 3 pthreads in thread pool. 3 pthreads are in status of

    pthread_mutex_lock(&sync_mutex);
    pthread_cond_wait(&sync_cond, &sync_mutex);
    pthread_mutex_unlock(&sync_mutex);

主线程已发送信号唤醒线程来处理工作。在这种情况下，如果3个线程已经忙，下一个信号已经到达，会怎么样？

Main thread has sent Signal to wake up the threads to process the work. In this situation, What if 3 threads are already busy and next signal has arrived?

推荐答案

信号消失。

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