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Old 04-22-2008, 08:31 AM   #1
Registered: Mar 2007
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semaphore in linux with maxcount and time out

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 ?

Old 04-22-2008, 11:45 AM   #2
Registered: Apr 2008
Location: Toulon (France)
Distribution: FEDORA CORE
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"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.



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