[clug] pthread coroutines

[Simon Burton]

Thanks, this looks right;; i tried two mutexes and was thinking i'd need three ...

Simon.


On Wed, 2 Jul 2003 22:00:41 +1000
Andrew Over <andrew at cs.anu.edu.au> wrote:

> Condition variable and a mutex.  Every time you want to change the
> active thread (ie you're done):
> 
>   pthread_mutex_lock(&mtx);
>   pthread_cond_signal(&cvar);
>   pthread_cond_wait(&cvar, &mtx);
>   pthread_mutex_unlock(&mtx);
> 
> The mutex is only necessary to avoid a race condition between a thread
> trying to wait and a thread trying to signal.
> 
> Cheers,
> --Andrew
> 


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Simon Burton, B.Sc.
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