#32210 [Asn->Csd]: proc_get_status "running"-field true after execution of command
ID: 32210
Updated by: iliaa@php.net
Reported By: joh at deworks dot net
-Status: Assigned
+Status: Closed
Bug Type: Program Execution
Operating System: Linux
PHP Version: 5CVS-2005-03-07 (dev)
Assigned To: wez
New Comment:
This bug has been fixed in CVS.
Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
Thank you for the report, and for helping us make PHP better.
Previous Comments:
------------------------------------------------------------------------
[2005-03-07 02:06:51] tony2001@php.net
It really looks that proc_get_status() doesn't take into account the
result of waitpid() and still returns TRUE even when child process is
already dead.
Wez, take a look at the patch, plz.
Index: proc_open.c
===================================================================
RCS file: /repository/php-src/ext/standard/proc_open.c,v
retrieving revision 1.31
diff -u -p -d -r1.31 proc_open.c
--- proc_open.c 21 Feb 2005 09:50:48 -0000 1.31
+++ proc_open.c 7 Mar 2005 01:04:08 -0000
@@ -414,6 +414,10 @@ PHP_FUNCTION(proc_get_status)
stopsig = WSTOPSIG(wstatus);
}
}
+ else if (wait_pid == -1) {
+ /* -1 means such child doesn't exist i.e. it already
exited */
+ running = 0;
+ }
#endif
add_assoc_bool(return_value, "running", running);
------------------------------------------------------------------------
[2005-03-07 00:46:29] joh at deworks dot net
Description:
------------
The "running" field of the status array returned by proc_get_status()
is always TRUE after the execution of the command is finished. As the
manual says, running should be "TRUE if the process is still running,
FALSE if it has terminated". What is strange is that at some point of
the command execution, it's false. Maybe it's value is the opposite of
what the manual says?
Reproduce code:
---------------
(Best run from the command line)
$handle = proc_open("ls", array(2 => array("pipe", "r")), $pipes);
while (true) {
$status = proc_get_status($handle); var_dump($status["running"]);
sleep(1);
}
Expected result:
----------------
bool(false)
<output of the command>
bool(true)
bool(false)
bool(false)
...
Actual result:
--------------
bool(true)
<output of the command>
bool(false)
bool(true)
bool(true)
...
------------------------------------------------------------------------
--
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Thread (3 messages)