[imp] Log errors with memcached sessions

[Sebastián Calero]

Follows this issue in the horde list now like Jan Schneider advise us.
 
I try your patch but doesn´t work with PEAR_LOG_DEBUG that I now use for testing memcached, It isn't sufficient and to work this properly I use this code:
 
106c106

< Horde::logMessage('Wrote session data (id = ' . $id . ')', __FILE__, __LINE__, PEAR_LOG_DEBUG);

---

> // Horde::logMessage(sprintf("Wrote session data (id = %s)", (string)$id), __FILE__, __LINE__, PEAR_LOG_DEBUG);

189c189

< Horde::logMessage('Using connection ' . ($hashCode % $ns) . ' for id = ' . $id, __FILE__, __LINE__, PEAR_LOG_DEBUG);

---

> // Horde::logMessage('Using connection ' . ($hashCode % $ns) . ' for id = ' . $id, __FILE__, __LINE__, PEAR_LOG_DEBUG);

 
If I comment the 'Horde::logMessage' in 'write' and '_getConForId' functions all works nice.
 
 
Greetings and thanks for the answer.
 
 
Sebastian Calero.
 

	-----Mensaje original----- 
	De: imp-bounces at lists.horde.org en nombre de Kevin M. Myer 
	Enviado el: sáb 12/11/2005 1:11 
	Para: imp at lists.horde.org 
	CC: 
	Asunto: Re: [imp] Log errors with memcached sessions
	
	

	Quoting "Kevin M. Myer" <kevin_myer at iu13.org>:
	
	> This is very interesting.  I'm the one that added the log messages and
	> I had the same observation that you did, which amounts to Apache
	> segfaulting sporadically.  The only difference I could really see
	> between working code and not working code was the log messages (I was
	> comparing two slightly different iterations of the code) but I couldn't
	> see how having them present would cause segfaults.  I'll try to figure
	> it out tonight.  Someone who knows PHP innards better than I care to
	> offer an explanation for this?
	
	Alright, I think I found at least a consistent and somewhat logical
	explanation to this.  The segfault appears to be triggered by the
	private function _getConForId if you have your log level set to
	LOG_DEBUG.  If you have it set to anything lower than that (which would
	prevent Horde::logMessage from being called), no segfault.  This
	explains why the issue was sporadic for me, as I'd be switching between
	machines or configs that had different log levels set.  If you change
	that log level to LOG_NOTICE, Apache will segfault, and if you replace
	the log message with anything, it also segfaults, as I was thinking
	that maybe it couldn't handle a function call properly in the middle of
	a Horde::logMessage call.
	
	Try this patch and see if the error goes away for you.
	
	--- memcached.php       17 Oct 2005 20:56:51 -0000      1.11
	+++ memcached.php       12 Nov 2005 00:08:57 -0000
	@@ -186,7 +186,7 @@
	     {
	         $hashCode = abs((crc32($id) >> 16) & 0x7fff);
	         if (($ns = count($this->_db)) > 0) {
	-            Horde::logMessage('Using connection ' . ($hashCode % $ns)
	. ' for id = ' . $id,  __FILE__, __LINE__, PEAR_LOG_DEBUG);
	+//            Horde::logMessage('Using connection ' . ($hashCode %
	$ns) . ' for id = ' . $id,  __FILE__, __LINE__, PEAR_LOG_DEBUG);
	             return $this->_db[$hashCode % $ns];
	         } else {
	             Horde::fatal(PEAR::raiseError('No connections available
	for memcached SessionHandler.'), __FILE__, __LINE__);
	
	
	Kevin
	--
	Kevin M. Myer
	Senior Systems Administrator
	Lancaster-Lebanon Intermediate Unit 13  http://www.iu13.org
	
	
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