Req #67990 [NEW]: Add optional nowait argument to sem_acquire

From: mbeccati Operating system: Anything but Windows PHP version: 5.6Git-2014-09-10 (Git) Package: Semaphore related Bug Type: Feature/Change Request Bug description:Add optional nowait argument to sem_acquire Description: ------------ Historically sem_acquire blocks the caller until the semaphore is acquired. The new option will allow the function to return immediately in case the semaphore is not available. Bug #39168 suggests adding a timeout, but the underlying semop() function doesn't allow that. Some OSes (Linux, Solaris) have semtimedop(), but given it's not universally supported, I left it out. -- Edit bug report at https://bugs.php.net/bug.php?id=67990&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=67990&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=67990&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=67990&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=67990&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=67990&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=67990&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=67990&r=needscript Try newer version: https://bugs.php.net/fix.php?id=67990&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=67990&r=support Expected behavior: https://bugs.php.net/fix.php?id=67990&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=67990&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=67990&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=67990&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=67990&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=67990&r=dst IIS Stability: https://bugs.php.net/fix.php?id=67990&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=67990&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=67990&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=67990&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=67990&r=mysqlcfg