ID: 33011
User updated by: joe at bs0 dot com
Reported By: joe at bs0 dot com
-Status: Bogus
+Status: Open
Bug Type: Semaphore related
Operating System: windows xp
PHP Version: 5.0.4, 4.3.11
New Comment:
no, php has a layer over the win32 api that provides an interface
identical to the posix shm api. please see TSRM/tsrm_win32.c. The
problem lies in this code, not in the windows code base. I have code
working that fixes this problem, can you tell me how I can submit a
patch/ if there is anyone that could do a code review?
Thanks
Previous Comments:
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[2005-05-18 12:40:52] [EMAIL PROTECTED]
Bug Micro$oft about it.
If it works on *nix and doesn't work on Windows, than it's definitely
not a PHP problem, because PHP uses the same code in ext/shmop for all
OSes.
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[2005-05-16 14:35:16] joe at bs0 dot com
you are testing this under windows?
------------------------------------------------------------------------
[2005-05-16 12:24:09] [EMAIL PROTECTED]
This code outputs for me:
shared memory block marked for deletion.
block closed.
PHP Warning: shmop_open(): unable to attach or create shared memory
segment in /www/index.php on line 27
Warning: shmop_open(): unable to attach or create shared memory segment
in /www/index.php on line 27
Could not open previously deleted block.
------------------------------------------------------------------------
[2005-05-15 02:34:02] joe at bs0 dot com
as short as I can make it:
<?php
$toWrite = 'test string';
$shm_len = strlen($toWrite);
$shm_id = shmop_open(0xff3, "c", 0644, $shm_len);
shmop_write($shm_id, $toWrite, 0);
shmop_close($shm_id);
$shm_id = shmop_open(0xff3, "a", 0, 0);
$data = shmop_read($shm_id, 0, $shm_len);
shmop_close($shm_id);
$shm_id = shmop_open(0xff3, "w", 0, 0);
if (!shmop_delete($shm_id)) {
echo "Couldn't mark shared memory block for deletion.<br/>";
}
else {
echo "shared memory block marked for deletion.<br/>";
}
shmop_close($shm_id);
echo 'block closed.<br/>';
$shm_id = shmop_open(0xff3, "a", 0, 0);
if($shm_id) {
$data = shmop_read($shm_id, 0, $shm_len);
shmop_close($shm_id);
echo 'ERROR: Previously deleted block able to be opened.<br/>';
echo 'Data read : "' . $data . '"';
}
else {
echo 'Could not open previously deleted block.<br/>';
}
?>
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[2005-05-15 02:00:15] [EMAIL PROTECTED]
Provide a *short* and *readable* reproduce script without any "actions"
and cases. Just a plain script that runs and shows wrong behaviour.
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The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/33011
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Edit this bug report at http://bugs.php.net/?id=33011&edit=1
