Run the kill.

def Run(self, unused_arg):
    """Run the kill."""
    # Send a message back to the service to say that we are about to shutdown.
    reply = rdf_flows.GrrStatus(status=rdf_flows.GrrStatus.ReturnedStatus.OK)
    # Queue up the response message, jump the queue.
    self.SendReply(reply, message_type=rdf_flows.GrrMessage.Type.STATUS)

    # Give the http thread some time to send the reply.
    self.grr_worker.Sleep(10)

    # Die ourselves.
    logging.info("Dying on request.")
    os._exit(242)