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From Ruediger Pluem <rpl...@apache.org>
Subject Re: Catching graceful restart in apache2 module
Date Tue, 04 Aug 2009 07:31:22 GMT


On 08/04/2009 09:02 AM, Graham Dumpleton wrote:
> 2009/8/4 Petr Hracek <phracek2@gmail.com>:
>> I have found in following link: (http://wiki.apache.org/httpd/ModuleLife)
>>
>> Race conditions during graceful restart
>>
>> During a graceful restart, old children are still serving old requests while
>> new children are serving new requests. If the same lock must be used by old
>> and new children, then the lock name must be the same and cannot be
>> generated with tmpnam() or similar functions in the post_config hook.
>>
>> Which lock is means there. I have already found the in the post_config I
>> have cleanuped procedure, but in the post_config is already mentioned
>> function for killing all session.
>> Is there any way how to detect if the restart of apache has been done as
>> gracefull or as hard restart?
> 
> /**
>  * predicate indicating if a graceful stop has been requested ...
>  * used by the connection loop
>  * @return 1 if a graceful stop has been requested, 0 otherwise
>  * @deffunc int ap_graceful_stop_signalled(*void)
>  */
> AP_DECLARE(int) ap_graceful_stop_signalled(void);

Is this also true for graceful restarts?
The comment only talks about graceful stops.

Regards

RĂ¼diger


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