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Date: Tue, 21 Apr 2009 09:45:07 +0530
From: Saju Pillai <saju.pillai@gmail.com>
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To: modules-dev@httpd.apache.org
Subject: Re: Deregister and register a single module on passing signal..
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Jaysingh Samuel wrote:
> Eric, 
> Thanks for your reply, let me make my question clear.. 
> I have one Custom module, which i want to reload every 10mins, when i give graceful then it reloads all the modules and also the config directives. Because of this i want to have an option in the httpd say "reloadcustom" which takes signal Sigusr2 and have to reload only the custom modules i have without reading the config Directives and should gracefully start the apache.
> The only difference between the graceful and my reloadcustom should be that the reloadcustom will have to reload only custom modules without reading the config directives.
> I tried to do this by directly calling the post_config on my custom_module in the worker.c after getting the reloadcustom signal but i see memory Leaks because of this, the following are the sample code. 
> 
> Worker.cstatic void server_main_loop(int remaining_children_to_start){               int child_slot;    apr_exit_why_e exitwhy;    int status, processed_status;    apr_proc_t pid;    int i;                    while (!restart_pending && !shutdown_pending) {        /*            Parent process            childen to finish up and spawns new children.        */        if (is_reload == 1) {            Here i called my custom_module post config function.            /* wake up the children...time to die.*/           ap_mpm_pod_killpg(pod, ap_daemons_limit, TRUE);           is_reload = 0;        }        ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);}
> Please let me your suggestion on this. 
> Thanks in advance, Jaysingh Samuel. 
> 


httpd does not support what you are trying to do. Maybe what you really 
want is a FastCGI style process that can manage it's lifecycle 
independent of apache ?

-srp