[clug] pthread coroutines
andrew at cs.anu.edu.au
Wed Jul 2 22:00:41 EST 2003
I replied to this earlier, but I think AARNET's DNS issues may have
eaten it (either that or it's taking a while to retry).
On Wed, Jul 02, 2003 at 07:44:18PM +1000, Jepri wrote:
> Unless you use TWO mutexes, for instance. Or two semaphores, just like
> in almost every example of threading I've read so far...
> Just have each thread wait on a different semaphore. Have each routine
> lift the others semaphore, and lowier it's own.
Condition variable and a mutex. Every time you want to change the
active thread (ie you're done):
The mutex is only necessary to avoid a race condition between a thread
trying to wait and a thread trying to signal.
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