Update: I just re-read your post, and I didn't answer your question at all! Sorry; I misunderstood what you were asking. I'll give it another whack in a seperate post.

IPC::Open3 returns the PID of the process it creates, so you can simply remember that and kill it later. For example: 

#!/usr/bin/perl -w

use strict;
use IPC::Open3;

{
  my %pidlist;

  sub my_open3
  {
    my $pid=open3(@_);
    $pidlist{$pid}=1 if $pid;
    warn "my_open3: Started process $pid\n";
    $pid;
  }

  sub my_killkids
  {
    my($signal) = shift;
    warn "my_killkids: Killing processes ",join(" ",keys %pidlist),"\n
+";
    kill $signal, keys %pidlist;
  }
  sub my_chld
  {
    my $pid = wait;
    warn "my_chld: Child $pid finished.\n";
    delete $pidlist{$pid};
  }
}


$SIG{CHLD} = \&my_chld;

my_open3(\*STDOUT,\*STDIN,\*STDOUT,"sleep 10");
my_open3(\*STDOUT,\*STDIN,\*STDOUT,"sleep 10");
my_open3(\*STDOUT,\*STDIN,\*STDOUT,"sleep 10");

my_killkids('INT');

sleep(1); sleep(1); sleep(1);

my_killkids('KILL');

[download]

In reply to Re: Killing of ALL children made by Open3 by sgifford
in thread Killing of ALL children made by Open3 by Anonymous Monk

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