#17558 [Com]: pcntl_signal() does not call user-defined function handler

From: Date: Wed, 07 Aug 2002 06:22:32 +0000
Subject: #17558 [Com]: pcntl_signal() does not call user-defined function handler
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-16112@lists.php.net to get a copy of this message
 ID:               17558
 Comment by:       jeff@tmtrading.com
 Reported By:      clay@killersoft.com
 Status:           Feedback
 Bug Type:         *Extensibility Functions
 Operating System: Mac OS X
 PHP Version:      4.2.1
 New Comment:

See bug id 15125.  Looks like a similar problem.


Previous Comments:
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[2002-07-07 21:00:30] sniper@php.net

Does this happen with the latest snapshot:

http://snaps.php.net/php4-latest.tar.gz


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[2002-06-01 23:27:52] clay@killersoft.com

function: pcntl_signal()

problem: If "handler" argument is set to a user-defined 
function, that function is never called.

script: (taken from www.php.net/pcntl_signal)
<?php

// signal handler function
function sig_handler($signo) {
	echo "We hit the sig_handler!\n";
     switch($signo) {
         case SIGTERM:
             // handle shutdown tasks
             exit;
             break;
         case SIGHUP:
             // handle restart tasks
             break;
         case 1:
         	print "Caught sig 1 ...\n";
         	break;
         case SIGUSR1:
             print "Caught SIGUSR1...\n";
             break;
         default:
             // handle all other signals
     }

}

print "Installing signal handler...\n";

// setup signal handlers
pcntl_signal(SIGTERM, "sig_handler");
pcntl_signal(SIGHUP, "sig_handler");
pcntl_signal(SIGUSR1, "sig_handler");

print "Generating signal SIGTERM to self...\n";

// send SIGUSR1 to current process id
posix_kill(posix_getpid(), SIGUSR1);

print "Done\n"

?>

The "we hit the sig handler!" echo never appears ... thus I 
suspect it's never being called.

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