我如何让子线程在某种情况下等待并被父线程的一次调用唤醒？

Question

子线程进入睡眠状态，父线程可以调用某些例程来唤醒所有子线程来运行吗？

Answer 1

If you're using POSIX threads (pthreads), then pthread_cond_wait and (in your case) pthread_cond_broadcast are your friends. :-)

Answer 2

If you are using Win32, then you can use a manual-reset Event . Your parent thread would call SetEvent() and could wake up all child threads waiting for that object with a function such as WaitForSingleObject() .