new ListenerCallQueue.Event<Listener>() {
        @Override
        public void call(Listener listener) {
          listener.stopped();
        }

        @Override
        public String toString() {
          return "stopped()";
        }
      };

  /**
   * A listener for the aggregate state changes of the services that are under management. Users

	// stopped listening.
	resultGot = doer.Do(connReusingClient, shouldReuseConnection(t), "/echo?message=request-on-an-existing-connection-should-fail-with-error", time.Second)
	if !utilnet.IsConnectionRefused(resultGot.err) {
		t.Errorf("Expected error %v, but got: %v %v", syscall.ECONNREFUSED, resultGot.err, resultGot.response)
	}

	// the server has stopped listening but we still have a non long-running,

        } catch (final ContainerNotAvailableException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("ThumbnailGenerator is stopped.", e);
            } else if (logger.isInfoEnabled()) {
                logger.info("ThumbnailGenerator is stopped.");
            }
            exitCode = Constants.EXIT_FAIL;
        } catch (final Throwable t) {

	// Pop already expired watchers. However, explicitly ignore stopped ones,
	// as we don't delete watcher from bookmarkWatchers when it is stopped.
	for _, watchers := range c.bookmarkWatchers.popExpiredWatchersThreadUnsafe() {
		for _, watcher := range watchers {
			// c.Lock() is held here.
			// watcher.stopThreadUnsafe() is protected by c.Lock()
			if watcher.stopped {
				continue
			}

        state(busy, numDaemons - busy)
    }

    void idle() {
        idle(numDaemons)
    }

    void idle(int idle) {
        state(numDaemons - idle, idle)
    }

    void stopped() {
        numDaemons = 0
        state(0, 0)
    }

    void state(int busy, int idle) {
        state(new DaemonsState(busy, idle))
    }

    void state(DaemonsState checkpointState) {

	ref [numSig]int64
	// Map channels to signals while the channel is being stopped.
	// Not a map because entries live here only very briefly.
	// We need a separate container because we need m to correspond to ref
	// at all times, and we also need to keep track of the *handler
	// value for a channel being stopped. See the Stop function.
	stopping []stopping
}

type stopping struct {
	c chan<- os.Signal

        e.message == 'Cannot create outgoing dispatch, as <hub> has been stopped.'
    }

    def "cannot add handler after stop started"() {
        when:
        hub.requestStop()
        hub.addHandler("channel", new Object())

        then:
        IllegalStateException e = thrown()
        e.message == 'Cannot add handler, as <hub> has been stopped.'
    }

    def "cannot add connection after stop started"() {

    def fixture = new TestDeploymentFixture()

    def setup() {
        fixture.writeToProject(projectDir)
        buildTimeout = 30
    }

    def "deployment is stopped when continuous build is cancelled" () {
        when:
        runBuild(["runDeployment"]) {
            succeeds()
            def key = fixture.keyFile.text
            fixture.assertDeploymentIsRunning(key)

            }
            if (numIncompatible > 0) {
                reasons.add(numIncompatible + " incompatible");
            }
            if (numStopped > 0) {
                reasons.add(numStopped + " stopped");
            }

            return STARTING_DAEMON_MESSAGE + ", "
                + Joiner.on(" and ").join(reasons) + " Daemon" + (totalUnavailableDaemons > 1 ? "s" : "")
                + NOT_REUSED_MESSAGE;

     * complete. Note that the action may have completed by the time this method returns.
     *
     * @throws IllegalStateException When this connection has been stopped or is stopping.
     */
    <T> void run(ConsumerAction<? extends T> action, ResultHandlerVersion1<? super T> handler);

    /**
     * Stops this connection, blocking until all operations on the connection have completed.