sleep at the main thread by using pthread C/C++

Question

Hello I am new to pthread and, trying to test this program.

http://www.ibm.com/developerworks/library/l-posix3/

This program is working very well, but one thing. what is this sleep() in main thread? if I change it to sleep(2) to shorter or putting more task on this *threadfunc.

The thread finish before completing the all tasks. Is there any better way to wait until the task finish?

I found the solution,,,this is it. [link](http://stackoverflow.com/questions/6154539/how-can-i-wait-for-any-all-pthreads-to-complete) — user3556980, Apr 22 '14 at 20:35
Yes I changed the program in that way, and it is waiting until the task complete! — user3556980, Apr 23 '14 at 18:49

score 0 · Answer 1 · answered Apr 22 '14 at 03:40

The sleep() suspend the main thread, so the worker threads do the work for a time. After the main thread wakes up, it deactivates the work queue, so wq.control.active in threadfunc() is false, the worker threads terminate no matter whether the threads finish their tasks.

score 0 · Answer 2 · answered Apr 22 '14 at 10:40

0

Is there any better way to wait until the task finish?

Just join it using pthread_join(), the call would block until the thread to be joined ended.

answered Apr 22 '14 at 10:40

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sleep at the main thread by using pthread C/C++

2 Answers2