This is proving to be tricky.
If I load Devel::NYTProf::Apache[1] in the main part of httpd.conf then
I get a profile that includes all the activity *except* for any activity
in vhosts that use +Parent.
If I load it inside the VirtualHost section then I get a profile of
activity within that vhost. Great. Except there's a problem...
For a profile to be useful it must be terminated properly. Devel::NYTProf
does that using an END block. Devel::NYTProf::Apache does that using
sub child_exit { DB::_finish() }
my $s = Apache2::ServerUtil->server;
$s->push_handlers(PerlChildExitHandler => \&child_exit);
That works fine normally, but doesn't work with PerlOptions +Parent.
I get an error:
[error] lookup of 'Devel::NYTProf::Apache::child_exit' failed
I presume that's because the $s doesn't refer to the vhost "I'm in".
I can use $s->next (after require Apache2::ServerRec) to iterate over
the vhosts but I can't see a way to find "my" vhost.
Is there one?
What I'm looking for is some way for *a specific vhost perl interpreter*
to run code at PerlChildExitHandler *in that interpreter*.
Any ideas?
Tim.
p.s. Simply adding END { DB::_finish() } to Devel::NYTProf::Apache gives
me a profile that ends during server initialization because the vhost
perl interpreter is initialized using perl_run() and PL_exit_flags |=
PERL_EXIT_DESTRUCT_END has not been set. So I've now set PL_exit_flags
via NYTProf and that's giving me a usable profile for my limited case.
I've not yet looked-into how to generalise that into code that's work in
normal (non +Parent) case.
[1]
http://cpansearch.perl.org/src/TIMB/Devel-NYTProf-3.11/lib/Devel/NYTProf/Apache.pm
