Re: Semaphores - feature request

> I don't understand. If your "FIFO" is some kind of refcount that won't > work because the refcount would not be shared by multiple separate > PHP processes. You would have to put the refcount in shared memory > and even then there's no guarantee that the semaphore will be cleaned > up properly because any exit routine will not run if the application > is killed, crashes, aborts, etc. FIFO in this context is a queue of processes which are waiting for acquiring occupied semaphore. This queue is managed by operating system and is implemented in mechanism of semaphores. I think that there must be possibility to check if this queue is empty. Wojciech Malota