public function killAll($signal = SIGINT)
    {
        foreach ($this->forks as $fork) {
            $fork->kill($signal);
        }
    }
public function killAll($signal = SIGINT)
    {
        foreach ($this->forks as $fork) {
            $fork->kill($signal);
        }
    }
public function killAll ( $ signal = SIGINT ) { foreach ( $ this -> forks as $ fork ) { $ fork -> kill ( $ signal ) ; } }
Sends a signal to all forks.
Sends a signal to all forks .