For example:

foreach ( @your_jobs ) {
    if ( $pid ) { # parent
        ; # do nothing
    }
    elsif ( defined $pid ) {   # child
        # do something with $_ here, and then exit:
        exit;
    }
    else {
        die "fork failure $!";
    }
}
[download]

I've just started learning about forking, but this seems to be the general way to do it.

update: oop, that should've been foreach instead of while