如何检查如果一个线程使用的pthread时终止？

编程入门行业动态更新时间:2024-10-17 21:15:27

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我如何检查如果一个线程被终止？就我而言，我已经my_pthread [5]，我想检查是否有5个线程的完成自己的工作（被终止？ - 我不知道），那么我可以给他们更多的工作要做。

How do I check if a thread is terminated? In my case, I have my_pthread[5] and I want to check if any of 5 threads has finished its job (is terminated? - I'm not sure) then I can give them more work to do.

如果我用在pthread_join（），那么它必须是：

If I use pthread_join(), then it has to be:

pthread_join(my_pthread[0]); ... pthread_join(my_pthread[4]);

如果线程[3]线程[0]之前完成，然后我不得不等待thread0，1，2，完成什么？这不是我想要的。

What if thread[3] finishes before thread[0] and then I have to wait for thread0, 1, 2 to finish? That's not what I want.

推荐答案

这听起来像你想要的东西是不是等待一个线程完成/退出，但对于一个线程信号，即它与完成工作，这样你就可以给他们更多的工作。

It sounds like what you want is not to wait for a thread to finish/exit, but for a thread to signal that it's done with work, so you can feed them more work.

我会做的就是

创建5个工作队列和1的工作结果队列

create 5 work queues, and 1 work result queue

5线程环路从其工作队列和岗位业绩获取工作回到相同的结果队列。

The 5 threads loops by fetching work from its work queue and posts results back to the same result queue.

（发送工作到5个线程）的主线程会做这样的事情：

The main thread(sending work to the 5 threads) would do something like this:

for(;;) { struct threadmessage msg; struct *work_result; struct *work; thread_queue_get(&result_queue,NULL,&msg); work_result = msg->data; handle_result(work_result); work = get_more_work(); thread_queue_add(worK_result->queue,work,0); free_work_result(work_result); }

每个5个工作线程（处理一些工作，张贴结果返回给主线程）会做的：

Each of the 5 worker threads (processing some work, posting the result back to the main thread) would do:

for(;;) { struct threadmessage msg; struct *work_result; struct *work; thread_queue_get(my_queue,NULL,&msg); work = msg->data; process(work_result); work_result->queue = my_queue; thread_queue_add(&result_queue,work_result,0); free_work(work); }