Hello again, jamesgerard1964,

Fortunately, the MCE::Shared module is not exclusive to MCE workers. The following is a demonstration using Parallel::ForkManager and MCE::Shared. Workers store the status into a shared hash.

use strict;
use warnings;

use Parallel::ForkManager;
use MCE::Shared;

my @servers = ('a'..'z');
my $timeout = 10;
my $user    = "foo";
my $file    = "/tmp/hello.txt";
my $rpath   = "/tmp";
my $fname   = "hello.txt";

tie my %result, 'MCE::Shared';

my $fork_manager = Parallel::ForkManager->new(8);

$fork_manager->set_waitpid_blocking_sleep(0);

foreach my $server (@servers) {
  my $pid = $fork_manager->start;
  if ($pid) {
    # parent
    print "$$: child process started, with a key of $server ($pid)\n";
  }
  else {
    # child
    eval {
       local $SIG{ALRM} = sub { alarm 0; die "alarm\n" };
       alarm $timeout;
       $result{$server} = system("scp -p $file $user\@$server:$rpath/$
+fname");
    };
    alarm 0;
    $fork_manager->finish;
  }
}

$fork_manager->wait_all_children;

for my $server ( sort keys %result ) {
  my ($status, $signum);

  $status = $result{$server};
  $signum = $status & 127;    # extract signal number
  $status = $status >> 8;     # becomes exit status

  print "$server: exit_status $status, signal_num $signum\n";
}

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In reply to Re^3: Parallel::Forkmanager question by Anonymous Monk
in thread Parallel::Forkmanager question by jamesgerard1964

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