forking subprocesses perl section tests stops prove; test::harness exiting

i have perplexing perl utility/module "prove" exam tag section tests. section tests small some-more "system" "unit" i need flare off credentials processes biased test, controlling following...

sub spinupmonitor{
   $base_dir = shift;
   $config = shift;

   $pid = fork();
   if($pid){
      relapse $pid;
   }else{
      $cmd = "$base_dir\/..\/bin\/monitor_real.pl -config $config -test";
      tie stdout;

      exec ($cmd) die "cannot exec exam formula [$cmd]\n";
   }
}

sub killmonitor{

   $pid = shift;

   imitation "killing guard [$pid]\n";
   kill(1,$pid);
}

however reason i have .t record spin adult additional processes causes exam tag hang during finish initial .t record after tests have finished, rather going unbroken file, exiting there wholly one.

at initial i wondered competence since i murdering sub-processes withdrawal defunct. i added..

$sig{chld} = \&reaper;
sub reaper {
   $pid = wait;
   $sig{chld} = \&reaper;
}

to code. nonetheless doesn't help. fact closed hearing turns out perl exam record exited left slight infer coupling book reaped the child. fact i total die() during finish exam book i got...

# looks your exam died only after 7.

so book exited nonetheless reason tag isn't unraveling.

i endorse unequivocally sub-processes upsetting i noxious while tests unsuccessful tag exited properly.

is there anything i am doing wrong proceed i am starting adult processes competence dissapoint tag way?

thanks

peter