I've got a perl script, and i'm attempting to spawn a new thread. The (greatly simplified) flow is as such: 
main_file.pl
-------------------
use strict;
use Env;
use Getopt::Long;
use Config::Properties;
use Net::FTP::Recursive;
use Net::SFTP::Foreign;
use File::Copy;
use File::Basename;
use Cwd;
use Fcntl ':mode';
use MIME::Base64::Perl;
use Net::MySQL;

...
  if(something){
    require("sub_file.pl");
    sub_from_sub_file();
  }
...


sub_file.pl
-------------------
use strict;
use XML::LibXML;
use Config::Properties;
use DBI;
use threads;

...
sub_from_sub_file(){
   print "Before\n";
   my $thr = threads->new(\&sub1);
   print "After\n";
}

sub sub1{
    print "HI!\n";
}
...

[download]

output would be: "Before"
Now, if i create a thread directly in the main, it seems to work okay, but calling it in the require()'d file it either 1) waits a moment then fails with "Alarm Clock" 2) or if i add $SIG{ALRM}="IGNORE"; it just waits forever.

For some reason the thread is never being spawned properly, i know this isn't my real code, which i can't really post, but does this issue make sense to anyone? I included all of the modules i'm using in the two scripts, but I'm not sure if that makes a big diff.

In reply to ithreads not behaving as expected by madorb

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