> You must use some additional application specific logic to trigger > semaphore removal. For example you could have a "boss" process that > collects the exit status of each "worker". When the boss process has an > exit status for all workers the semaphore can be removed. > > Am I getting closer or am I still not understanding the problem? > > Mike
You are much closer now. I think that PHP interpreter should be a "boss" because PHP scripts don't know if this execution of website is the last which releases the semaphore. So if last script calls my_sem_release function, the semaphore will be removed and now another script calls my_sem_acquire function it won't cause an error because inside my_sem_acquire function is called sem_get() which will create this semaphore once again. So this solution is completely safe. I haven't got knowledge about PHP source code, so I can't implement this behaviour - I give only an idea. The key to success is that all instructions in functions my_sem_acquire and my_sem_release can't be interrupted. Wojciech Malota -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
