How to use the supervisor.events.notify function in supervisor

def runforever(self):
        events.notify(events.SupervisorRunningEvent())
        timeout = 1 # this cannot be fewer than the smallest TickEvent (5)

        socket_map = self.options.get_socket_map()

        while 1:
            combined_map = {}
            combined_map.update(socket_map)
            combined_map.update(self.get_process_map())

            pgroups = self.process_groups.values()
            pgroups.sort()

            if self.options.mood < SupervisorStates.RUNNING:
                if self.options.subprocpidfile:
                    # 'subprocpidfile' option is set, which implies that all
                    # managed sub-processes should NOT be killed and would

def tick(self, now=None):
        """ Send one or more 'tick' events when the timeslice related to
        the period for the event type rolls over """
        if now is None:
            # now won't be None in unit tests
            now = time.time()
        for event in events.TICK_EVENTS:
            period = event.period
            last_tick = self.ticks.get(period)
            if last_tick is None:
                # we just started up
                last_tick = self.ticks[period] = timeslice(period, now)
            this_tick = timeslice(period, now)
            if this_tick != last_tick:
                self.ticks[period] = this_tick
                events.notify(event(this_tick, self))

def _log(self, data):
        if data:
            config = self.process.config
            if config.options.strip_ansi:
                data = stripEscapes(data)
            if self.childlog:
                self.childlog.info(data)
            if self.log_to_mainlog:
                msg = '%(name)r %(channel)s output:\n%(data)s'
                config.options.logger.log(
                    self.mainlog_level, msg, name=config.name,
                    channel=self.channel, data=data)
            if self.channel == 'stdout':
                if self.stdout_events_enabled:
                    notify(
                        ProcessLogStdoutEvent(self.process,
                            self.process.pid, data)
                    )
            else: # channel == stderr
                if self.stderr_events_enabled:
                    notify(
                        ProcessLogStderrEvent(self.process,
                            self.process.pid, data)
                    )

# we can't make a determination yet, we dont have a full
                    # results line
                    return

                result_line = self.state_buffer[:pos]
                self.state_buffer = self.state_buffer[pos+1:] # rid LF
                resultlen = result_line[self.RESULT_TOKEN_START_LEN:]
                try:
                    self.resultlen = int(resultlen)
                except ValueError:
                    process.config.options.logger.warn(
                        '%s: bad result line: %r' % (procname, result_line)
                        )
                    self._change_listener_state(EventListenerStates.UNKNOWN)
                    self.state_buffer = ''
                    notify(EventRejectedEvent(process, process.event))
                    process.event = None
                    return

            else:
                needed = self.resultlen - len(self.result)

                if needed:
                    self.result += self.state_buffer[:needed]
                    self.state_buffer = self.state_buffer[needed:]
                    needed = self.resultlen - len(self.result)

                if not needed:
                    self.handle_result(self.result)
                    self.process.event = None
                    self.result = ''
                    self.resultlen = None

def change_state(self, new_state, expected=True):
        old_state = self.state
        if new_state is old_state:
            # exists for unit tests
            return False

        event_class = self.event_map.get(new_state)
        if event_class is not None:
            event = event_class(self, old_state, expected)
            events.notify(event)

        if new_state == ProcessStates.BACKOFF:
            now = time.time()
            self.backoff += 1
            self.delay = now + self.backoff

        self.state = new_state

while 1:
            combined_map = {}
            combined_map.update(socket_map)
            combined_map.update(self.get_process_map())

            pgroups = self.process_groups.values()
            pgroups.sort()

            if self.options.mood < SupervisorStates.RUNNING:
                if not self.stopping:
                    # first time, set the stopping flag, do a
                    # notification and set stop_groups
                    self.stopping = True
                    self.stop_groups = pgroups[:]
                    events.notify(events.SupervisorStoppingEvent())

                self.ordered_stop_groups_phase_1()

                if not self.shutdown_report():
                    # if there are no unstopped processes (we're done
                    # killing everything), it's OK to shutdown or reload
                    raise asyncore.ExitNow

            r, w, x = [], [], []

            for fd, dispatcher in combined_map.items():
                if dispatcher.readable():
                    r.append(fd)
                if dispatcher.writable():
                    w.append(fd)

def sendRemoteCommEvent(self, type, data):
        """ Send an event that will be received by event listener 
        subprocesses subscribing to the RemoteCommunicationEvent.
        
        @param  string  type  String for the "type" key in the event header
        @param  string  data  Data for the event body
        @return boolean       Always return True unless error
        """
        if isinstance(type, unicode):
            type = type.encode('utf-8')
        if isinstance(data, unicode):
            data = data.encode('utf-8')

        notify(
            RemoteCommunicationEvent(type, data)
        )

        return True