Re: mod_perl, SVN::Core-related segfault condition

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Dorian Taylor wrote:

>>>i suspect though that anything trying to directly call apr_terminate()
>>
>>>from an END block would do the same. the debugger gets all fuzzy
>>
>>>when it gets into there though.
>>
>>Yeah, sounds like a design problem.
> 
> 
> what exactly is required from mod_perl in the preflight config
> stage? does it basically just `use' every preloaded module in the
> conf to see if it can?

I'm not sure what do you ask. I meant apr design problem, not modperl's 
one. mod_perl does not init apr, httpd does.

BTW, I think you may have the same problem with mod_cgi. I'm not sure 
whether apr_terminate is called on child process shutdown.

>>Are you in rush to get this fixed? Or can I try to finish a few other 
>>things first (though not urgent).
> 
> 
> a bit of one. i'm basically doing a kind of a reimplementation of
> mod_negotiation, mod_dir and mod_mime (plus a couple other things)
> to work on svn repositories. those modules interface directly with
> the filesystem, so i need to provide a different method for emulating
> various features of the filesystem. i wanted to do them up in
> mod_perl with SVN::Core.

OK, so post that XS module that reproduces the problem and I'll see if 
something can be done.

>>If you have an XS module that doesn't depend on SVN that would be handy too.
> 
> 
> yeah, that's what i'm going to be working on. just basically BEGIN
> { apr_initialize() } END { apr_terminate() }, in xs. i bet it'll
> do the same thing.

It depends on how it is implemented. The fix should be most likely in the 
SVN module. It should detect that it's running under Apache or APR 
environment and in which case not run the shutdown of apr environment. And 
this solution will be transparent to mod_perl.


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