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Date: Wed, 16 Jul 2008 21:29:13 -0400
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To: Stanislav Malyshev <stas@zend.com>
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Subject: Re: [PHP-DEV] potential shutdown order issue
From: greg@chiaraquartet.net (Greg Beaver)

Stanislav Malyshev wrote:
> Hi!
>
>> zend_destroy_rsrc_list(&EG(regular_list)).  On the next line,
>> zend_post_deactivate_modules() is called, which steps through the module
>> list and unloads all the dynamically loaded modules.  If one of these
>
> dl() is really troublesome...
>
>> I think this issue could be fixed by moving the
>> zend_destroy_rsrc_list(&EG(regular_list)) call after the module
>> shutdown.  I've attached a patch demonstrating the principle (this fixes
>> the hashtable destroyed message and I don't get anything bad like a
>> segfault).
>
> But many resource dtors may need some action from modules they belong 
> to. If modules are already past shutdown, that may be a problem.
> If we must spend time on supporting dl(), then I'd propose to fix 
> module dtor so that it wouldn't try to access EG(regular_list) - if it 
> happens as you described, it doesn't need it anyway. 
Hi,

This has nothing to do with dl().  mysqli was loaded in php.ini via
extension=mysqli.so

I can't test the proposed fix until August, but it sounds like it would 
also fix the issue without messing with shutdown.

Greg