From:
Operating system: Ubuntu Natty Nerwhal
PHP version: 5.3SVN-2011-09-20 (snap)
Package: Performance problem
Bug Type: Bug
Bug description:possibility memory leak on namespace and spl_autoload_register
Description:
------------
Hi,
I want to report (possible) bug that related to namespace and
spl_autoload_register.
Somehow, I cannot reclaim memory used (using unset) if I am using namespace
WITH
include(_once) or require(_once) (on multiple page call) compared than
using
multiple namespace on single page alone. I do not know if it is a bug or
perfomance issue.
I met the same case on spl_autoload_register. I compared using
include(_once) or
require(_once) against spl_autoload_register, and found the resource
(memory
usage) cannot be claimed.
so, that's all.
Test script:
---------------
namespace Abstraction;
$start = microtime('time');
$mem = memory_get_usage();
/*
* Untuk sementara, penggunaan namespace TIDAK BOLEH MENGIKUTSERTAKAN
include dan require,
* karena hal seperti ini menggunakan memory resource sangat tinggi. Hal
ini sepertinya adalah bug (memory leak).
* Kejadian serupa juga dapat ditemui pada penggunaan
spl_autoload_register.
*/
abstract class RequestAbstract
{
abstract public function server($key);
}
class RequestImpl {}
class NamespaceAbstract {}
namespace Http;
use \Abstraction;
class MyRequest extends Abstraction\RequestAbstract
{
public function server($key = '')
{
return new Request;
}
}
class RequestConcrete extends Abstraction\RequestImpl {}
class Response {}
$test3 = new Response;
$test4 = new MyRequest;
$test5 = new RequestConcrete;
$test6 = new Abstraction\RequestImpl;
$test7 = new Abstraction\NamespaceAbstract;
print_r($test3);
print_r($test4);
print_r($test5);
print_r($test6);
print_r($test7);
unset($test, $test3, $test4, $test5,$test6, $test7);
echo "Elapsed: ", microtime('time') - $start, " Memory Usage: ",
memory_get_usage() - $mem;
// give result only consumed 156 bytes (compared than using include or
require)
Expected result:
----------------
Test script on singlepage namespace:
// give result only consumed 156 bytes (compared than using include or
require)
Test script on multiplepage namespae:
Expected: 156 bytes
Actual result:
--------------
Test script on singlepage namespace:
// give result only consumed 156 bytes (compared than using include or
require)
Test script on multiplepage namespae:
Actual: 1 KB (more or less)
--
Edit bug report at https://bugs.php.net/bug.php?id=55739&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=55739&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=55739&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=55739&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=55739&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=55739&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=55739&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=55739&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=55739&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=55739&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=55739&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=55739&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=55739&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=55739&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=55739&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=55739&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=55739&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=55739&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=55739&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=55739&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=55739&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=55739&r=mysqlcfg
