On Friday 29 October 2004 22:13, Stas Bekman wrote:
Torsten Förtsch wrote:
On Friday 29 October 2004 20:17, Stas Bekman wrote:
perl allows to modify $0. Then top, ps & co would display the new process title. Can the process title of a mod_perl modified apache be set this way?
...
Take a look at this commit, which might be of some relevance: http://marc.theaimsgroup.com/?l=apache-modperl-cvs&m=107672268012042&w=2
But I see, it is not supported.
Due to internal Apache corruptions, no.
I have just uploaded Sys::Proctitle that modifies the process title at C level. It works only on linux. I have tried it with 2.0.52+mp2-RC1.
To the internal Apache corruptions: my first attempt was simply to make a copy of __environ via malloc() and strdup(). With pure perl that worked but with apache/mod_perl it gave segfaults or double free messages from glibc depending on the require'ing or use'ing of the module. Some poking on putenv/getenv/setenv source code revealed big magic and led me to the following approach of copying the environment:
clearenv(); for( i=0; envp[i]; i++ ) { char *cp=strchr( envp[i], '=' ); if( cp ) { *cp++='\0'; setenv( envp[i], cp, 1 ); } }
where is the copy? I don't see any data allocated.
clearenv() simply sets __environ=NULL. setenv() then builds a new environment.
I don't know anything about how mp2 and apache interact regarding the environment. But maybe it helps to let $0 be assigned to in mod_perl.
You don't want to know :)
As you can see from the email you've quoted the problem is really coming from Perl, not Apache.
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