I have a class with 2 methods: start() and finish(). The relevant parts are below.

(Updated for clarity)

package IPC_Class
use strict;
use warnings;

sub new
{
  shift; my $self = { 'cmds' => undef, @_ };
  defined $self->{'cmds'} or die "ERROR: didn't get CMD in constructor
+.";
  IPC::Shareable->clean_up_all;
  bless $self; return $self;
}

sub start {
  my $self = shift;
  my $fh_glob_ref = shift;
  ...
  # the cmd "grep 'zzz'" in the next line will fail.
  my $h = IPC::Run::start(['sort'], '<pipe', $fh_glob_ref, '|', ['grep
+', 'zzz'], '>', $writefh, "2>", $writefh) or die "Error: $!\n";
  $self->{'h'} = h;
}

sub finish {
  my $self = shift;
  $h = $self->{'h'};
  if (!$h->finish()) {
    for ($h->full_results) { print "$_\n" };
  }
}

[download]
The idea is to encapsulate all the IPC work in that class. However, if I do this in the main program: 
my $o = new IPC_Class;
$o->start(\*FH_GLOB); # pass in a FH ref so we can pump more data to i
+t later.

# Now, add more data thru the FH.
print FH_GLOB "line 1\n";
print FH_GLOB "line 2\n";
...

$o->finish();

[download]
Assuming I gave it a cmd that resulted in an exit code other than 0, $h->finish() should test false and $h->full_results should show the exit code for each cmd. This is not happening. Instead I get "unknown result, unknown PID" for each member of $h->full_results. Now, if I move the code in finish() to the main program, then it works as expected, i.e. $h->full_results does show the exit codes including the failed one. So for some reason, finish() doesn't seem to be getting the proper $h object. Would appreciate any pointer.

In reply to IPC::Run harness question by italdesign

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