# $SIG{'INT'} = sub { kill 'TERM', -$$ };  # this works already
$SIG{'TERM'} = sub { MCE->exit(0) };       # Notifies the parent


##</code><code>##

$SIG{'TERM'} = sub {
    if (MCE->wid > 0) {
        # worker
        MCE->exit(0);
    } else {
        # parent
        MCE::Signal::stop_and_exit('TERM');
    }
};