Re: Co-thread for parallel processing

On Fri, Dec 2, 2011 at 11:23 AM, Randi Botse <[email protected]> wrote:
> 1. What the proper way to the main thread to wait for all co-threads
> until finished?

I'll do a semop() with sem_op=1 in each thread's start, and a
sem_op=-1 when each thread's finished.
Then in the main thread I'll wait with a sem_op = 0.

> 2. After calling pthread_cond_signal() or pthread_cond_broadcast()
> followed by sleep()/nanosleep(),
>    the condition variable looks like not signaled, (the co-thread
> routine doesn't run). What make this?

Please show the code snippet in the co-thread that is not working as
well as the mainthread's method you try to wake up the co-threads
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