#48321 [Opn->Bgs]: flock() blocks within function regardless of operation

From: Date: Tue, 19 May 2009 22:49:47 +0000
Subject: #48321 [Opn->Bgs]: flock() blocks within function regardless of operation
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-137540@lists.php.net to get a copy of this message 
 ID:               48321
 Updated by:       jani@php.net
 Reported By:      php at alishabeth dot com
-Status:           Open
+Status:           Bogus
 Bug Type:         Filesystem function related
 Operating System: Ubuntu 9.04
 PHP Version:      5.2.6
 New Comment:

This is really simple actually. Move the sleep inside the function and

it will work the same way as the "inline" version. 

What happens is when you use the function, once the function is run, 
there are no more references pointing to the opened file pointer and 
it's garbage cleaned (and unlocked) before your sleep() call.


Previous Comments:
------------------------------------------------------------------------

[2009-05-19 17:48:48] php at alishabeth dot com

Is anyone able to reproduce on previous versions such as those I've
found it on?  

If so should the documentation be updated to note this issue?

------------------------------------------------------------------------

[2009-05-19 17:44:50] lbarnaud@php.net

Can't reproduce on 5.2.9.

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[2009-05-19 17:29:41] php at alishabeth dot com

I'm sorry, building your latest source to test this further is not
something I can do.  I'm hopeful that you have enough developers that
you can use the test case I provided to reproduce this yourselves.

Thanks

------------------------------------------------------------------------

[2009-05-19 07:37:07] lbarnaud@php.net

Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/



------------------------------------------------------------------------

[2009-05-18 22:15:36] php at alishabeth dot com

Description:
------------
Placing flock() calls within a function seems to result in blocking
regardless of the operations specified.  The same exact code outside a
function behaves correctly.

This bug report wouldn't let me select the PHP version I'm running. 
Wasn't an option

Reproduce code:
---------------
http://alishabeth.com/lock-test.php.txt

Reproduced in the following builds:
$ php -v
PHP 5.1.6 (cli) (built: Apr  7 2009 08:00:18) 
Copyright (c) 1997-2006 The PHP Group
Zend Engine v2.1.0, Copyright (c) 1998-2006 Zend Technologies
    with eAccelerator v0.9.5.2, Copyright (c) 2004-2006 eAccelerator,
by eAccelerator


$ php -v
PHP 5.2.6-3ubuntu4.1 with Suhosin-Patch 0.9.6.2 (cli) (built: Apr 23
2009 14:37:14) 
Copyright (c) 1997-2008 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies
    with Xdebug v2.0.3, Copyright (c) 2002-2007, by Derick Rethans


Expected result:
----------------
Using the function always blocks

Actual result:
--------------
Flock should behave correctly within the function


------------------------------------------------------------------------


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