Python signal.pause函数代码示例

def main():

	port = common.PORT
	username = input("Choose a username : ")

	dark_vader, luke = Pipe()

	p = Process(target=server_process, args=(luke, port, username))
	p.start()

	def pause_handler(signum, frame):
		pass

	def chat_handler(signum, frame):
		print(u'\033[2K\n\033[1A',end='', flush=True)
		print(dark_vader.recv())
		print('{} > '.format(username), end="", flush=True)

	signal.signal(41, pause_handler)
	signal.signal(42, chat_handler)

	signal.pause()

	chat.chat(port, username)

	p.terminate()

 def reap(self):
   """Collect the dead jobs."""
   while self._running:
     dead = set()
     for job in self._running:
       st = job.state(self._cache)
       if st == _RUNNING: continue
       if st == _FAILURE or st == _KILLED:
         self._failures += 1
         if self._stop_on_failure:
           self._cancelled = True
           for job in self._running:
             job.kill()
       dead.add(job)
       break
     for job in dead:
       self._completed += 1
       self._running.remove(job)
     if dead: return
     if (not self._travis):
       message('WAITING', '%d jobs running, %d complete, %d failed' % (
           len(self._running), self._completed, self._failures))
     if platform.system() == 'Windows':
       time.sleep(0.1)
     else:
       global have_alarm
       if not have_alarm:
         have_alarm = True
         signal.alarm(10)
       signal.pause()

def main():
    god = God(paper=PAPER)
    
    god.setup()
    god.start()
    signal.pause()
    god.world()

    def test_signals(self):
        # Test signal handling semantics of threads.
        # We spawn a thread, have the thread send two signals, and
        # wait for it to finish. Check that we got both signals
        # and that they were run by the main thread.
        signalled_all.acquire()
        self.spawnSignallingThread()
        signalled_all.acquire()
        # the signals that we asked the kernel to send
        # will come back, but we don't know when.
        # (it might even be after the thread exits
        # and might be out of order.)  If we haven't seen
        # the signals yet, send yet another signal and
        # wait for it return.
        if signal_blackboard[signal.SIGUSR1]['tripped'] == 0 \
           or signal_blackboard[signal.SIGUSR2]['tripped'] == 0:
            signal.alarm(1)
            signal.pause()
            signal.alarm(0)

        self.assertEqual( signal_blackboard[signal.SIGUSR1]['tripped'], 1)
        self.assertEqual( signal_blackboard[signal.SIGUSR1]['tripped_by'],
                           thread.get_ident())
        self.assertEqual( signal_blackboard[signal.SIGUSR2]['tripped'], 1)
        self.assertEqual( signal_blackboard[signal.SIGUSR2]['tripped_by'],
                           thread.get_ident())
        signalled_all.release()

def test_sigchld():
    r = reaper.Reaper()
    old_sigchld = signal.getsignal(signal.SIGCHLD)
    r.hookup_sigchld()
    assert r.old_sigchld is old_sigchld
    assert signal.getsignal(signal.SIGCHLD) == reaper.theReaper.handle_sigchld
    del r

    waiting = [DelayedExitFork(i, (i % 32) / 32) for i in range(256)]
    while waiting:
        signal.pause()
        i = 0
        while i < len(waiting):
            if waiting[i].obit is not None:
                f = waiting.pop(i)
                assert f.obit.pid == f.pid
                assert f.obit.exitstatus == f.expectedstatus
                assert f.obit.termsig is None
                assert f.obit.stopsig is None
                assert f.obit.coredump is False
            else:
                i += 1

    reaper.theReaper.unhookup_sigchld()
    assert signal.getsignal(signal.SIGCHLD) is old_sigchld

    reaper.theReaper = None

def withEmpty(words):
    start = time.time()
    for w in words:
        pass
    print '%fs' % (time.time() - start)

    signal.pause()

    def main(self):
        # See comment at top of file about zuul imports
        import zuul.scheduler
        import zuul.launcher.jenkins
        import zuul.trigger.gerrit

        self.sched = zuul.scheduler.Scheduler()

        jenkins = zuul.launcher.jenkins.Jenkins(self.config, self.sched)
        gerrit = zuul.trigger.gerrit.Gerrit(self.config, self.sched)

        self.sched.setLauncher(jenkins)
        self.sched.setTrigger(gerrit)

        self.sched.start()
        self.sched.reconfigure(self.config)
        self.sched.resume()
        signal.signal(signal.SIGHUP, self.reconfigure_handler)
        signal.signal(signal.SIGUSR1, self.exit_handler)
        while True:
            try:
                signal.pause()
            except KeyboardInterrupt:
                print "Ctrl + C: asking scheduler to exit nicely...\n"
                self.exit_handler(signal.SIGINT, None)

def main():
    syncilainen = None

    def reload(signum, stack):
        if syncilainen:
            syncilainen.reload_config()

    def quit(signum, stack):
        if syncilainen:
            syncilainen.stop()
        exit(0)

    # listen for SIGHUP or SIGUSR1 and reload config
    signal.signal(signal.SIGHUP, reload)
    signal.signal(signal.SIGUSR1, reload)

    # listen for SIGINT and quit gracefully
    signal.signal(signal.SIGINT, quit)

    # boilerplate
    options = read_options()
    setup_logging(options.log_file, options.debug)
    
    logging.info("PID: %s" % os.getpid())
    
    # start the syncilainen daemon
    syncilainen = Syncilainen()
    syncilainen.start()

    # wait for signals
    while True:
        signal.pause()

    def main(self):
        self.setup_logging()
        self.pool = nodepool.nodepool.NodePool(self.args.secure,
                                               self.args.config,
                                               self.args.no_deletes,
                                               self.args.no_launches,
                                               self.args.no_images)
        if self.args.builder:
            self.builder = nodepool.builder.NodePoolBuilder(
                self.args.config, self.args.build_workers,
                self.args.upload_workers)

        if not self.args.no_webapp:
            self.webapp = nodepool.webapp.WebApp(self.pool)

        signal.signal(signal.SIGINT, self.exit_handler)
        # For back compatibility:
        signal.signal(signal.SIGUSR1, self.exit_handler)

        signal.signal(signal.SIGUSR2, stack_dump_handler)
        signal.signal(signal.SIGTERM, self.term_handler)

        self.pool.start()
        if self.args.builder:
            nb_thread = threading.Thread(target=self.builder.runForever)
            nb_thread.start()

        if not self.args.no_webapp:
            self.webapp.start()

        while True:
            signal.pause()

def serve_forever(host, port, childnum):
    # create, bind, listen
    listen_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # re-use the port
    listen_sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

    listen_sock.bind((host, port))
    listen_sock.listen(BACKLOG)

    print 'Listening on port %d ...' % port

    global MAP
    MAP = create_array(childnum)

    # prefork children
    global PIDS
    PIDS = [create_child(index, listen_sock) for index in range(childnum)]

    # setup SIGTERM handler - in case the parent is killed
    signal.signal(signal.SIGTERM, _cleanup)

    # parent never calls 'accept' - children do all the work
    # all parent does is sleeping :)
    try:
        signal.pause()
    except KeyboardInterrupt:
        _exit_handler()
        print_stats()

    def stop(self):
        """Shutdown the MCP and child processes cleanly"""
        LOGGER.info('Shutting down controller')
        self.set_state(self.STATE_STOP_REQUESTED)

        # Clear out the timer
        signal.setitimer(signal.ITIMER_PROF, 0, 0)

        self._mcp.stop_processes()

        if self._mcp.is_running:
            LOGGER.info('Waiting up to 3 seconds for MCP to shut things down')
            signal.setitimer(signal.ITIMER_REAL, 3, 0)
            signal.pause()
            LOGGER.info('Post pause')

        # Force MCP to stop
        if self._mcp.is_running:
            LOGGER.warning('MCP is taking too long, requesting process kills')
            self._mcp.stop_processes()
            del self._mcp
        else:
            LOGGER.info('MCP exited cleanly')

        # Change our state
        self._stopped()
        LOGGER.info('Shutdown complete')

  def start(self):
    # Watch the source files for changes
    filewatch = Observer()
    filewatch.schedule(FilewatchHandler(parent=self,
        ignore_patterns=['*.swp', '*~']),
        self.src_dir,
        recursive=True)

    # Clean shutdown on ctrl+c
    def signal_handler(signal, frame):
      print
      print 'Shutting down...'
      self.stop_server()
      filewatch.stop()

    signal.signal(signal.SIGINT, signal_handler)

    self.rebuild()
    self.start_server()

    print 'Serving at port', self.port
    print 'Serving files from', self.final_build_dir
    print('Press Ctrl+C to stop')

    filewatch.start()
    signal.pause()
    filewatch.join(5000)

def main():

	threads=[]

	t = threading.Thread(
				target=sniff,
				kwargs={'prn':arp_handler, 'filter':'arp', 'iface': iface_name, 'store': 0},
				name='ARP'
				)
	threads.append(t)

	t = threading.Thread(
				target=sniff,
				kwargs={'prn':icmp_handler, 'filter':'icmp', 'iface': iface_name, 'store': 0},
				name='ICMP'
				)
	threads.append(t)

	for worker in threads:
		worker.daemon=True
		print "%s worker starting" % (worker.name)
		worker.start()


	try:
		while (42):
			time.sleep(1)
			signal.pause()
	except KeyboardInterrupt:
		print "CTRL+C caught"
		for worker in threads:
			print "%s worker joining main thread" % (worker.name)
			worker.join(1)
		sys.exit(0)

 def reap(self):
     """Collect the dead jobs."""
     while self._running:
         dead = set()
         for job in self._running:
             st = job.state(self._cache)
             if st == _RUNNING:
                 continue
             if st == _FAILURE:
                 self._failures += 1
             if st == _KILLED:
                 self._failures += 1
             dead.add(job)
         for job in dead:
             self._completed += 1
             self._running.remove(job)
         if dead:
             return
         if not self._travis:
             message(
                 "WAITING",
                 "%d jobs running, %d complete, %d failed" % (len(self._running), self._completed, self._failures),
             )
         global have_alarm
         if not have_alarm:
             have_alarm = True
             signal.alarm(10)
         signal.pause()

def main():
    processes = {}

    create_ugc_directories()

    def restart(*args, **kwargs):
        for app, proc in processes.items():
            if proc:
                print 'killing %s (%s)...' % (app, proc.pid)
                proc.terminate()
                proc.communicate()

        if 'sass' in run('which sass', stdout=subprocess.PIPE).stdout.read():
            sass()

        redis()
        memcache()
        nginx()
        for app in processes.keys():
            processes[app] = globals()[app]()
            print '%s: %s' % (app, processes[app].pid if processes[app] else None)
        print 'All systems go! Ctrl+C to restart everything, Ctrl+Z to end.\n'

    restart()
    signal.signal(signal.SIGINT, restart)
    while True:
        signal.pause()