note 49202 added to function.pcntl-signal

Some weird signal interactions going on here. I'm running PHP 4.3.9. sleep() calls seem to be interrupted when any signal is received by the PHP script. But things get weird when you sleep() inside a signal handler. Ordinarily, signal handlers are non-reentrant. That is, if the signal handler is running, sending another signal has no effect. However, sleep() seems to override PHP's signal handling. If you sleep() inside a signal handler, the signal is received and the sleep() is interrupted. This can be worked around like this: function handler($signal) { // Ignore this signal pcntl_signal($signal, SIG_IGN); sleep(10); // Reinstall signal handler pcntl_signal($signal, __FUNCTION__); } I don't see any mention of this behavior in the documentation. ---- Manual Page -- http://www.php.net/manual/en/function.pcntl-signal.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+49202 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+49202&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+49202&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+49202&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+49202&report=yes&reason=useless Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+49202&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+49202&report=yes Search -- http://master.php.net/manage/user-notes.php