Hi,
I should have mentioned earlier that "init_module is actually a post_config
hook" (I am a newbie as far as apache modules are concerned, thats y i missed
it)
yes, you are right "this would be more on-topic for the apache-modules list". I
posted over there also, but this appears to be a very normal way to use
shared-mutexes and I saw couple of in-built modules and they all (whatever i
saw) seem to create and destroy the mutex in same way. and then I thought If
someone already has seen something like this then this mailing list might be
very useful.
I would like to apologize if this is completely off the track :(
But If anyone of you had seen this error and know some workaround then kindly
help me out. I badly need to fix this issue.
Thanks in advance.
Sudhanshu
-----Original Message-----
From: Nick Kew [mailto:[EMAIL PROTECTED]
Sent: Mon 7/18/2005 10:16 PM
To: [email protected]
Cc:
Subject: Re: [EMAIL PROTECTED] HELP .... apr_pool_t and
apr_global_mutex _
On Mon, 18 Jul 2005, Sudhanshu Prakash wrote:
> Hi *,
>
> I am using apr_* api's in my apache module and scenario is like as
> follows:
>
> 1) In init_module, I am creating one apr_global_mutex_t
> and registering a cleanup function which destroys the mutex.
init_module?
The following in a post_config hook works fine for me:
apr_global_mutex_create(&global_mutex, global_fname,
APR_LOCK_DEFAULT, pool) ;
unixd_set_global_mutex_perms(global_mutex) ;
apr_pool_cleanup_register(pool, global_mutex,
(void*)apr_global_mutex_destroy, apr_pool_cleanup_null) ;
>
> 2) In init_child, I am re-opening the same mutex using
> apr_global_mutex_child_init
Yep, that's right.
> 3) During Graceful restart, there is a race condition between mutex
> destruction and child-restart i.e. Mutex is destroyed first while old
> httpd childrens are still running and throws an error "(22), Invalid
> Argument". (This scenario is easy to replicate when http is pumped
with
> high number of http requests and simultaneously i do graceful restart)
Hmmm, I haven't had that problem. You need to tell us what hook
you are referring to as init_module.
BTW, this would be more on-topic for the apache-modules list.
--
Nick Kew
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