#30743 [NEW]: proc_open() / proc_close() leak handles on Windows XP
From: ilya77 at gmail dot com
Operating system: Windows XP
PHP version: 5.0.2
PHP Bug Type: Program Execution
Bug description: proc_open() / proc_close() leak handles on Windows XP
Description:
------------
I have a scheduler script, which constantly runs in the background,
invokes processes, and pipes their output back to stdout.
It seems that proc_open() or proc_close() call leaks handles on Windows
platform (I'm running PHP 5.0.2).
In the example code, the handles count would increment by 1 each time
invoke() is called, in other places I saw similar code leak 4 handles at
once during each iteration.
Reproduce code:
---------------
while(1)
{
echo("---\n");
invoke();
sleep(5);
}
function invoke()
{
$commandLine = "echo hello";
$fileDescriptors = array(
1 => array("pipe", "w"),
2 => array("pipe", "w")
);
$pipes = array();
$processHandle = proc_open($commandLine,
$fileDescriptors, $pipes);
if (is_resource($processHandle))
{
foreach($pipes as $pipeID => $pipeHandle)
fclose($pipeHandle);
proc_close($processHandle);
}
}
Expected result:
----------------
I expected the handle count to increment by X, and decrement by X after
the process completes.
(where it's logical to assume that X = number of pipes + 1 for the child
process handle)
Actual result:
--------------
In fact, the handles count (in windows task manager) for the php.exe
process running the script incremented by 1 each time invoke() in the
example code was executed.
--
Edit bug report at http://bugs.php.net/?id=30743&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=30743&r=trysnapshot4
Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=30743&r=trysnapshot50
Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=30743&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=30743&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=30743&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=30743&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=30743&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=30743&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=30743&r=support
Expected behavior: http://bugs.php.net/fix.php?id=30743&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=30743&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=30743&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=30743&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=30743&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=30743&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=30743&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=30743&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=30743&r=float
MySQL Configuration Error: http://bugs.php.net/fix.php?id=30743&r=mysqlcfg
Thread (3 messages)
- ilya77 at gmail dot com