Re: Change program name of httpd process

[Oleg Shaikhatarov <ol...@allory.com>]

Stas Bekman wrote:
> Oleg Shaikhatarov wrote:
> > Hello, all!
> >
> > I need to change proctitle (called $PROGRAM_NAME or $0 in perl) of
> > httpd process from mod_perl. Simple change of $0 variable works well
> > for standalone perl program, but don't work under mod_perl. 
> > I'm not sure if it's possible, but if anyone have an idea how to do
> > this please help.
> 
> please give us some more details. What do you do and what doesn't
> work. 
> e.g. Apache::Registry sets $0 to the location of the currently
>  processed script. Why cannot you do the same?

Thanks for the response.

I need to change program name as it seen by "ps" command.

In other words "ps ax | grep http" gives something like:

21718 ?        S      0:00 /usr/sbin/httpd -DHAVE_ACCESS -DHAVE_PROXY 
21719 ?        S      0:00 /usr/sbin/httpd -DHAVE_ACCESS -DHAVE_PROXY 
21720 ?        S      0:00 /usr/sbin/httpd -DHAVE_ACCESS -DHAVE_PROXY 
23140 pts/4    S      0:00 grep http

But I need this output to be:

21718 ?        S      0:00 /usr/sbin/httpd -DHAVE_ACCESS -DHAVE_PROXY
21719 ?        S      0:00 my custom title here
21720 ?        S      0:00 my another custom title here
23140 pts/4    S      0:00 grep http

And I need to change this from mod_perl.

Thanks,
Oleg Shaikhatarov
SWsoft Inc.

> __________________________________________________________________
> Stas Bekman            JAm_pH ------> Just Another mod_perl Hacker
> http://stason.org/     mod_perl Guide ---> http://perl.apache.org
> mailto:stas@stason.org http://use.perl.org http://apacheweek.com
> http://modperlbook.org http://apache.org   http://ticketmaster.com
> 
> 

Re: Change program name of httpd process

[Stas Bekman <st...@stason.org>]

Oleg Shaikhatarov wrote:
> Stas Bekman wrote:
> 
>>Oleg Shaikhatarov wrote:
>>
>>>Hello, all!
>>>
>>>I need to change proctitle (called $PROGRAM_NAME or $0 in perl) of
>>>httpd process from mod_perl. Simple change of $0 variable works well
>>>for standalone perl program, but don't work under mod_perl. 
>>>I'm not sure if it's possible, but if anyone have an idea how to do
>>>this please help.
>>
>>please give us some more details. What do you do and what doesn't
>>work. 
>>e.g. Apache::Registry sets $0 to the location of the currently
>> processed script. Why cannot you do the same?
> 
> 
> Thanks for the response.
> 
> I need to change program name as it seen by "ps" command.
> 
> In other words "ps ax | grep http" gives something like:
> 
> 21718 ?        S      0:00 /usr/sbin/httpd -DHAVE_ACCESS -DHAVE_PROXY 
> 21719 ?        S      0:00 /usr/sbin/httpd -DHAVE_ACCESS -DHAVE_PROXY 
> 21720 ?        S      0:00 /usr/sbin/httpd -DHAVE_ACCESS -DHAVE_PROXY 
> 23140 pts/4    S      0:00 grep http
> 
> But I need this output to be:
> 
> 21718 ?        S      0:00 /usr/sbin/httpd -DHAVE_ACCESS -DHAVE_PROXY
> 21719 ?        S      0:00 my custom title here
> 21720 ?        S      0:00 my another custom title here
> 23140 pts/4    S      0:00 grep http
> 
> And I need to change this from mod_perl.

I understood that. You aren't saying *where* do you need it, that's why 
I've asked for more details.

If you want to do that for mod_perl handlers, mod_perl sets $0 to the 
httpd path during the perl_startup (see mod_perl.c:713). Therefore you 
probably want to write a PerlChildInitHandler that overrides $0.

If you want the same behavior for Registry scripts, which always set $0 
to the location of the currently processed script you have to subclass 
Apache::RegistryNG and override the method set_script_name() which does 
exactly that.

__________________________________________________________________
Stas Bekman            JAm_pH ------> Just Another mod_perl Hacker
http://stason.org/     mod_perl Guide ---> http://perl.apache.org
mailto:stas@stason.org http://use.perl.org http://apacheweek.com
http://modperlbook.org http://apache.org   http://ticketmaster.com