Update: Modified script. Completes in 1 second with Cygwin Perl v5.22.4 and less than 1 second on Unix.

Update: Modified list of modules to pre-load. On the Windows platform, run with Perl v5.26 or later for best results.

The following does the same thing using MCE::Hobo. Pre-loading essential modules is necessary, even for Perl v5.26. The posix_exit option applies to UNIX-like OSes and is helpful in the event an underlying module or dependency isn't multi-process safe.

use strict;
use warnings;

use LWP::Simple;

# Pre-load essential modules for extra stability.

if ( $INC{'LWP/UserAgent.pm'} && !$INC{'Net/HTTP.pm'} ) {
   require IO::Handle;
   require Net::HTTP;
   require Net::HTTPS;
}

my @urls = (
   'http://hooboy.no-such-host.int/',
   'http://us.a1.yimg.com/us.yimg.com/i/ww/m5v9.gif',
   'http://www.guardian.co.uk/',
   'http://www.ora.com/ask_tim/graphics/asktim_header_main.gif',
   'http://www.pixunlimited.co.uk/siteheaders/Guardian.gif',
   'http://www.yahoo.com',
) x 4;

use MCE::Hobo 1.831;

MCE::Hobo->init(
   max_workers => 8,
   posix_exit  => 1,
);

foreach my $url ( @urls ) {
   mce_async {
      my ($type, $length, $mod) = head($url);
      print "$url is done\n";
   };
}

MCE::Hobo->waitall;

[download]

Regards, Mario

In reply to Re^2: Crash with ForkManager on Windows by marioroy
in thread Crash with ForkManager on Windows by amitsq

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