source: trunk/essentials/dev-lang/perl/ext/Thread/unsync3.tx

BEGIN {
    eval { require Config; import Config };
    if ($@) {
        print "1..0 # Skip: no Config\n";
        exit(0);
    }
}

use Thread;

$| = 1;

srand($$^$^T);

sub whoami {
    my $thread = shift;
    print $thread;
}

sub uppercase {
    my $count = 100;
    while ($count--) {
        my $i = int(rand(1000));
        1 while $i--;
        print "A";
        $i = int(rand(1000));
        1 while $i--;
        whoami("B");
    }
}
        
sub lowercase {
    my $count = 100;
    while ($count--) {
        my $i = int(rand(1000));
        1 while $i--;
        print "x";
        $i = int(rand(1000));
        1 while $i--;
        whoami("y");
    }
}
        
sub numbers {
    my $count = 100;
    while ($count--) {
        my $i = int(rand(1000));
        1 while $i--;
        print 1;
        $i = int(rand(1000));
        1 while $i--;
        whoami(2);
    }
}
        
new Thread \&numbers;
new Thread \&uppercase;
new Thread \&lowercase;