$ perl -e '
use strict;
use warnings;
use threads;
use threads::shared;

print "Started at: ", time, "\n";
print "Starting main program\n";

my @threads;
for ( my $count = 1; $count <= 10;$count++) {
        my $t = threads->new(\&sub1);
        push(@threads,$t);
}
foreach (@threads) {
        $_->join;
}
print "End of main program\n";
print "Stopped at: ", time, "\n";

sub sub1 {
        print "Called at: ", time, "\n";
        sleep 2;
        #do something
}
'
Started at: 1354171101
Starting main program
Called at: 1354171101
Called at: 1354171101
Called at: 1354171101
Called at: 1354171101
Called at: 1354171101
Called at: 1354171101
Called at: 1354171101
Called at: 1354171101
Called at: 1354171101
Called at: 1354171101
End of main program
Stopped at: 1354171103