Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:7150
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Message-ID: <20040117142834.89981.qmail@pb1.pair.com>
To: internals@lists.php.net
Reply-To: mep_eisen@web.de
Date: Sat, 17 Jan 2004 15:28:01 +0100
References: <200401090011.44840.ilia@prohost.org> <20040109120318.6b6d1cdb.paj@pearfr.org>
Lines: 36
User-Agent: KNode/0.7.2
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7Bit
Subject: Re: [PHP-DEV] ZE2, dl() and objects
From: mep_eisen@web.de (Martin Eisengardt)

Pierre-Alain Joye wrote:

>> It seems there is a problem in either the PHP's shutdown sequence in
>> php_request_shutdown() or destrutor order in ZE2. The problem is quite
>> simple,
I did some debugging and got a segfault in zend_variables.c:61
        ZEND_OBJ_HT_P(zvalue)->del_ref(zavlue TSRMLS_CC);

seems that the class definitions an extension defines are lost (the
extension is unloaded) before the created variables are destroyed.
object_handlers table is destroyed. If you set your object
to null inside php script or if you destroy all public variables
inside module shutdown sequence it works fine...

        $a=null;
works fine.

code block from php_request_shutdown() (main.c:1216)

        if (PG(modules_activated)) {
                zend_deactivate_modules(TSRMLS_C);   // modules are unloaded
        }
[...]
        zend_deactivate(TSRMLS_C); // variables are destroyed inside here

If you change the order it works and there are no segfaults. but there are
some other problems php reports:

/home/mepeisen/projects/php/php-5.0.0b3/Zend/zend_hash.c(672) : ht=0x8230ef8
is already destroyed
/home/mepeisen/projects/php/php-5.0.0b3/Zend/zend_hash.c(672) : ht=0x8230ef8
is already destroyed
/home/mepeisen/projects/php/php-5.0.0b3/Zend/zend_hash.c(67) : Bailed out
without a bailout address!