Bug #16986 Updated: semaphore autorelease can be a bug....

ID: 16986 Updated by: wez@php.net Reported By: AlberT@SuperAlberT.it -Status: Open +Status: Feedback Bug Type: Semaphore related Operating System: Linux 2.4.18 PHP Version: 4.1.2 New Comment: But a process that acquires a semaphore and then exits will case deadlocks, because no one else can acquire the semaphore?? Can you give a good example of where leaving the semaphore acquired is actually useful? Previous Comments: ------------------------------------------------------------------------ [2002-05-03 05:37:33] AlberT@SuperAlberT.it sem_acquire() function has this behavior: After processing a request, any semaphores acquired by the process but not explicitly released will be released automatically and a warning will be generated. This is not a great thing, infact in this way the readers/writers classical IPC problem, with writers precedence is impossible to implement !!! I think an option to disable autorelease is usefull. (I sent a feature/change request, but I had no feadback :-( ) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=16986&edit=1