semaphore in linux with maxcount and time out

Manjunath1847 · 04-22-2008, 08:31 AM

I am porting a Windows application to Linux. I need to set a time out for the semaphore wait operation. I did it with sem_trywait in a loop. Is there a better way?

How to set set the maximum count for a semaphore ? Anybody has a wrapper written with these functionalities implemented ?

thanks
Manju

jf.argentino · 04-22-2008, 11:45 AM

"man sem_wait" gives sem_timedwait which seems to do the job.
It's easy to get the current semaphore value with "sem_getvalue" and then don't "sem_post" if the value is greater than the max you need.