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From "MATHIHALLI,MADHUSUDAN (HP-Cupertino,ex1)" <>
Subject RE: Perl framework - problems on HPUX
Date Fri, 22 Feb 2002 20:42:00 GMT
I'm using the worker MPM, and the test framework hangs soon after starting
up the server (after the following messages).. Any ideas what may be
happening ??..

waiting for server to start: ok (waited 7 secs)
server localhost:8529 started
server localhost:8530 listening (mod_ssl)
server localhost:8531 listening (mod_headers)
server localhost:8532 listening (mod_echo)
server localhost:8533 listening (mod_echo_ssl)
server localhost:8534 listening (mod_proxy)
server localhost:8535 listening (mod_vhost_alias)


-----Original Message-----
From: Stas Bekman []
Sent: Friday, January 25, 2002 8:42 PM
Subject: Re: Perl framework 'server exited' on AIX

Rodent of Unusual Size wrote:

> When trying to run vanilla 't/TEST' on AIX, with httpd-2.0 HEAD,
> I'm getting a
> waiting for server to start: 00:00
> server has died with status 255 (please examine t/logs/error_log)
> Checking the logfile, and the running system, reveals this to
> be a canard.  The server *is* started.  I can't even get it
> to return a non-zero exit status with a real startup failure
> and -DONE_PROCESS -DNO_DETACH, so I don't know where the 255
> is coming from..
> Any thoughts?  Is there a switch I can pass to t/TEST, or
> 'perl t-TEST', that's the equivalent of bash's -xv?

It dies here:

         require POSIX;
         $old_sig = $SIG{CHLD};
         $SIG{CHLD} = sub {
             while ((my $child = waitpid(-1, POSIX::WNOHANG())) > 0) {
                 my $status  = $? >> 8;
                 #error "got child exit $status";
                 if ($status) {
                     $self->failed_msg("\nserver has died with status 
                     kill SIGTERM => $$;

any ideas what's different on AIX/HP from Linux? read it as a C code, 
it's a simple SIGCHLD that checks that the forked process doesn't exit, 
till we know that the server is responding. (then the signal handler is 
reset to the default).

But it seems that on AIX/HP it throws SIGCHLD with status 255. Any ideas 

As a temp workaround, which disables this error checking, just add:

Index: Apache-Test/lib/Apache/
RCS file: 
retrieving revision 1.53
diff -u -r1.53
--- Apache-Test/lib/Apache/	17 Jan 2002 04:17:49 -0000

+++ Apache-Test/lib/Apache/	26 Jan 2002 04:40:34 -0000
@@ -429,6 +429,7 @@
+        $SIG{CHLD} = $old_sig || 'DEFAULT';

          defined(my $pid = fork) or die "Can't fork: $!";
          unless ($pid) { # child

But then if there is some problem at the startup, it'll wait for about 
60 secs before it shuts down. So let's figure out what's different on 

Stas Bekman             JAm_pH      --   Just Another mod_perl Hacker      mod_perl Guide

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