Bug #53085 [NEW]: Php blocked waiting process exit
From:
Operating system: Linux
PHP version: 5.2.14
Package: Program Execution
Bug Type: Bug
Bug description:Php blocked waiting process exit
Description:
------------
PHP process do not quit.
By some way it is waiting the process created by proc_open to close.
Sending a Ctrl-C send a signal to PHP process and both die.
If I launch it as a background process( appending to command & ) it return
the wrong pid( maybe the parent pid of something that proc_open called )
but PHP do not lock.
The process PID of executable is the pid + 1 returned.
THe problem is that this PID + 1 remains alive.
The option bypass_shell is documented for windows only.
Expect this not to be a duplicated bug or bad interpretation of function
instructions manual.
Test script:
---------------
<?php
define( 'LF', "\n" );
$statusI = 0;
$processIO = array(
0 => array( 'pipe', 'r' ) # client process will read from it. This
process will write to it #
,1 => array( 'pipe', 'w' )
,2 => array( 'pipe', 'w' )
);
$procPipes = array();
#$processIO = array();
$proc = proc_open( '/bin/netstat -ic ', $processIO, $procPipes, getcwd(),
null, array( 'bypass_shell' => true, 'binary_pipes' => true ) );
#var_dump( $procPipes );
#/*
if ( !$statusI )
{
$status = proc_get_status( $proc );
if ( !$status['running'] )
$statusI = $status['exitcode'];
}
#*/
print( LF.'PHP ps pid: '.posix_getpid() );
print( LF.'Child ps pid: '.$status['pid'] );
#/*
fclose( $procPipes[0] );
fclose( $procPipes[1] );
fclose( $procPipes[2] );
#*/
#var_dump( __LINE__, proc_close( $proc ) );
$procPipes = null;
$proc = null;
exit( LF.'PHP dying.' );
?>
Expected result:
----------------
Expected that PHP launchs another separated process do his own tasks and
exit leaving the other process alive.
Appending the & to the command unblock but returns the wrong pid.
Actual result:
--------------
Got a blocked PHP process. Example:
PHP ps pid: 13658
Child ps pid: 13659 ( blocked here ).
ps -o pid,ppid,cmd,stat 13659
PID PPID CMD STAT
13659 13658 /bin/netstat -ic S+
Terminating PHP pid finish the other process too.
With & at end. Example:
PHP ps pid: 13724
Child ps pid: 13725
PHP dying.
ps -o pid,ppid,cmd,stat 13725
PID PPID CMD STAT
ps -o pid,ppid,cmd,stat 13726 ( process 1 init as parent )
PID PPID CMD STAT
13726 1 /bin/netstat -ic S
--
Edit bug report at http://bugs.php.net/bug.php?id=53085&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=53085&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=53085&r=trysnapshot53
Try a snapshot (trunk): http://bugs.php.net/fix.php?id=53085&r=trysnapshottrunk
Fixed in SVN: http://bugs.php.net/fix.php?id=53085&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=53085&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=53085&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=53085&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=53085&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=53085&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=53085&r=support
Expected behavior: http://bugs.php.net/fix.php?id=53085&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=53085&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=53085&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=53085&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53085&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=53085&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=53085&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=53085&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=53085&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=53085&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=53085&r=mysqlcfg
Thread (1 message)
- sumariva at gmail dot com