Hi all! I use Parallel::ForkManager for the distribution of work between the processes. And now I have only one problem. My code works correctly in Windows Active Perl. But in Linux $pm->finish(0,\$return_string); does not return a data structure to the parent process. Anyone else encountered a similar problem using this module?

use Parallel::ForkManager;

my %retrieved_responses = ();

$file_name='config';
if ( ! open CISCOFILE, $file_name ) {
die "Couldnt open router config file! ($!)";
}
@all_data=<CISCOFILE>;


$MAX_PROCESSES=10; 
$TEMP_FOLDER='temporary_folder'; 
mkdir("$TEMP_FOLDER");    

$pm = new Parallel::ForkManager($MAX_PROCESSES,"$TEMP_FOLDER");

$pm->run_on_finish(
    sub { my ($pid, $exit_code, $ident, $exit_signal, $core_dump, $dat
+a_structure_reference) = @_; 


      if (defined($data_structure_reference)) { 
        my $string = ${$data_structure_reference}; 
        print "Child send this result $string to parent\n"; 
        $retrieved_responses{$ident} = $data_structure_reference;    
      } else { 
        print qq|No message received from child process $pid!\n|;
      }

      print "** $ident just got out of the pool ".
        "with PID $pid and exit code: $exit_code\n";
    }
  );

  $pm->run_on_start( 
    sub { my ($pid,$ident)=@_;
#diag      print "** $ident started, pid: $pid\n";
    }
  );

  $pm->run_on_wait(
    sub {
#diag      print "** Have to wait for one children ...\n"
    },
    0.5
  );


$i=0;
foreach $data (@all_data) {
    chomp($data);
    $i=$i+1;
    my $pid = $pm->start($i) and next; 
    squabble($data);

}

$pm->wait_all_children;

rmdir("$TEMP_FOLDER");


@key_arr=keys(%retrieved_responses);
foreach $string(@key_arr)
{
print "$string ${$retrieved_responses{$string}}\n";
}


sub squabble {
    open(SUBINTFILE, ">>","child.txt") or die "Can't open file for wri
+ting $!";
    select SUBINTFILE;
          print "$$ $data\n";
    close SUBINTFILE;
    $return_string=$data;

      sleep 1;                
    $pm->finish(0,\$return_string);
}
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