问题描述
看起来像Linux的犯规实施pthread_suspend继续，但我真的需要他们。
Looks like linux doesnt implement pthread_suspend and continue, but I really need em.
我都试过cond_wait，但实在是太慢了。这项工作正在螺纹大多在50us的执行，但偶尔向上执行500毫秒。与cond_wait问题是双重的。互斥锁正在可比的时间到微秒处决和我不需要锁定。其次，我有很多工作线程和我真的不希望使N条件变量的时候，他们需要被唤醒。
I have tried cond_wait, but it is too slow. The work being threaded mostly executes in 50us but occasionally executes upwards of 500ms. The problem with cond_wait is two-fold. The mutex locking is taking comparable times to the micro second executions and I don't need locking. Second, I have many worker threads and I don't really want to make N condition variables when they need to be woken up.
我确切地知道哪些线程正在等待它的工作，可以只pthread_continue该线程。线程知道当没有更多的工作，并且可以容易地pthread_suspend本身。这将不使用锁定，避免踩踏，并会更快。问题是....没有pthread_suspend或_continue。
I know exactly which thread is waiting for which work and could just pthread_continue that thread. A thread knows when there is no more work and can easily pthread_suspend itself. This would use no locking, avoid the stampede, and be faster. Problem is....no pthread_suspend or _continue.
任何想法？
推荐答案
请在线程等待一个特定的信号。
Make the thread wait for a specific signal.
使用并的调用sigwait
Use pthread_sigmask and sigwait.
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