Example usage for java.util.concurrent CountDownLatch CountDownLatch

Introduction

In this page you can find the example usage for java.util.concurrent CountDownLatch CountDownLatch.

Prototype

public CountDownLatch(int count) 

Source Link

Document

Constructs a CountDownLatch initialized with the given count.

Usage

From source file:fr.keemto.scheduling.ScheduledTaskIT.java

@Test
public void shouldExecuteFetcherAsychronouslyWithDelay() throws Exception {

    CountDownLatch latch = new CountDownLatch(10);
    Task countDownTask = new CountDownTask(latch);

    scheduler.scheduleTask(countDownTask);
    latch.await(2000, TimeUnit.MILLISECONDS);

    assertThat(latch.getCount(), equalTo((long) 0));
}

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From source file:com.alibaba.otter.shared.arbitrate.zookeeper.DistributedReentrantLockTest.java

@Test
protected void test_lock() {
    ExecutorService exeucotr = Executors.newCachedThreadPool();
    final int count = 50;
    final CountDownLatch latch = new CountDownLatch(count);

    final DistributedReentrantLock lock = new DistributedReentrantLock(dir);
    for (int i = 0; i < count; i++) {
        exeucotr.submit(new Runnable() {

            public void run() {
                try {
                    Thread.sleep(1000);
                    lock.lock();//from w  w  w . j  a v a2s  . com
                    Thread.sleep(100 + RandomUtils.nextInt(100));

                    System.out.println("id: " + lock.getId() + " is leader: " + lock.isOwner());
                } catch (InterruptedException e) {
                    want.fail();
                } catch (KeeperException e) {
                    want.fail();
                } finally {
                    latch.countDown();
                    try {
                        lock.unlock();
                    } catch (KeeperException e) {
                        want.fail();
                    }
                }

            }
        });
    }

    try {
        latch.await();
    } catch (InterruptedException e) {
        want.fail();
    }

    exeucotr.shutdown();
}

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From source file:org.kurento.tutorial.helloworld.HelloWorldController.java

@RequestMapping(value = "/helloworld", method = RequestMethod.POST)
private String processRequest(@RequestBody String sdpOffer) {

    final CountDownLatch eventReceived = new CountDownLatch(1);
    // Media Logic
    MediaPipeline pipeline = kurento.createMediaPipeline();
    WebRtcEndpoint webRtcEndpoint = new WebRtcEndpoint.Builder(pipeline).build();
    webRtcEndpoint.addOnIceGatheringDoneListener(new EventListener<OnIceGatheringDoneEvent>() {
        @Override//from  ww  w. j  a va  2 s . c om
        public void onEvent(OnIceGatheringDoneEvent event) {
            eventReceived.countDown();
        }
    });

    webRtcEndpoint.connect(webRtcEndpoint);
    webRtcEndpoint.processOffer(sdpOffer);
    webRtcEndpoint.gatherCandidates();

    try {
        eventReceived.await();
    } catch (InterruptedException e) {

    }
    // SDP negotiation (offer and answer)
    String responseSdp = webRtcEndpoint.getLocalSessionDescriptor();
    return responseSdp;
}

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From source file:com.dianping.apistatic.Job.SeatingplanCrawlerJob.java

@Override
protected void execute() throws Exception {
    List<Integer> movieShowIds = readIntListFromFile(Constants.MOVIESHOWIDS_PATH);
    if (CollectionUtils.isEmpty(movieShowIds)) {
        log("movieShowIds?", new RuntimeException("movieShowIds "));
        return;/*from   w  ww .  j  av a 2  s.co m*/
    }

    int partitionSize = (movieShowIds.size() > 5 ? movieShowIds.size() / 5 : movieShowIds.size());
    List<List<Integer>> movieShowIdsList = Lists.partition(movieShowIds, partitionSize);
    CountDownLatch countDownLatch = new CountDownLatch(movieShowIdsList.size());
    for (List<Integer> list : movieShowIdsList) {
        SeatingPlanCrawlerThread thread = new SeatingPlanCrawlerThread(list, countDownLatch);
        thread.start();
    }
    try {
        countDownLatch.await();
    } catch (InterruptedException e) {
        log("CountDownLatch InterruptedException", e);
    }
}

---

From source file:net.javacrumbs.futureconverter.common.test.spring.SpringConvertedFutureTestHelper.java

@Override
public void waitForCalculationToFinish(ListenableFuture<String> convertedFuture) throws InterruptedException {
    final CountDownLatch latch = new CountDownLatch(1);
    convertedFuture.addCallback(new ListenableFutureCallback<String>() {
        @Override/*from   w  w w  . j a v  a 2 s  .  c  om*/
        public void onSuccess(String result) {
            latch.countDown();
        }

        @Override
        public void onFailure(Throwable t) {
            latch.countDown();
        }
    });
    latch.await(1, TimeUnit.SECONDS);
}

---

From source file:ufo.remote.calls.benchmark.server.vertx.VertxServiceImpl.java

@PostConstruct
public void init() throws InterruptedException {
    final CountDownLatch latch = new CountDownLatch(1);
    final VertxOptions options = new VertxOptions();
    final Config conf = new Config();
    Vertx.clusteredVertx(options.setClusterHost("localhost").setClusterPort(0).setClustered(true)
            .setClusterManager(new HazelcastClusterManager(conf)), ar -> {
                if (ar.failed()) {
                    logger.error("Error starting Vertx cluster", ar.cause());
                }//w w  w  .  java 2 s.  co m
                logger.info("Vertx cluster node started [{}]");
                vertx = ar.result();
                logger.info("Initialising vertx verticles...");
                vertx.deployVerticle(webServerVerticle);
                latch.countDown();
            });
    latch.await();
}

---

From source file:interactivespaces.master.server.services.internal.ros.MasterRosContext.java

public void startup() {
    log.error("Starting up master ROS context");

    final NodeConfiguration nodeConfiguration = rosEnvironment.getPublicNodeConfigurationWithNodeName();
    nodeConfiguration.setNodeName("interactivespaces/master");

    final CountDownLatch registrationLatch = new CountDownLatch(1);

    NodeListener listener = new NodeListener() {

        @Override/*from  ww w  .j  a  v a 2 s .c o  m*/
        public void onStart(ConnectedNode connectedNode) {
            setConnectedNode(connectedNode);
            registrationLatch.countDown();
        }

        @Override
        public void onShutdownComplete(Node node) {
            log.error(String.format("Got ROS node complete shutdown for Interactive Spaces master node %s",
                    node.getName()));
        }

        @Override
        public void onShutdown(Node node) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onError(Node node, Throwable throwable) {
            log.error(String.format("Got ROS node error for Interactive Spaces master node %s", node.getName()),
                    throwable);
        }
    };
    rosEnvironment.newNode(nodeConfiguration, Lists.newArrayList(listener));
}

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From source file:org.smartfrog.services.anubis.SmokeTest.java

public void testInProcess() throws Exception {
    TestNodeCfg.nextMagic();/*from  ww  w .  j  a va 2s .  c  o  m*/
    String stateName = "Whip It";
    int maxSleep = 500;
    int messageCount = 10;
    ArrayList<Node> nodes = new ArrayList<Node>();
    CountDownLatch launchLatch = new CountDownLatch(configurations.length);
    CountDownLatch startLatch = new CountDownLatch(configurations.length);
    CountDownLatch endLatch = new CountDownLatch(configurations.length);
    for (Class<?> config : configurations) {
        nodes.add(getNode(config, stateName, messageCount, maxSleep, launchLatch, startLatch, endLatch,
                configurations.length));
    }
    boolean stabilized = launchLatch.await(120, TimeUnit.SECONDS);
    assertTrue("Partition did not stabilize", stabilized);
    System.out.println("Partition stabilized");
    for (Node node : nodes) {
        node.start();
    }
    boolean started = startLatch.await(60, TimeUnit.SECONDS);
    assertTrue("Not all nodes started", started);
    System.out.println("Partition started");
    boolean ended = endLatch.await(60, TimeUnit.SECONDS);
    assertTrue("Not all messages were received: " + findMissing(nodes), ended);
    for (Node node : nodes) {
        node.shutDown();
    }
    for (Node sender : nodes) {
        List<SendHistory> sent = sender.getSendHistory();
        assertEquals(messageCount, sent.size());
        for (Node receiver : nodes) {
            List<ValueHistory> received = receiver.getValueHistory(sender.getIdentity());
            assertNotNull("Received no history from " + sender.getIdentity(), received);
            int lastCounter = -1;
            boolean first = true;
            List<ValueHistory> filtered = new ArrayList<ValueHistory>();
            for (ValueHistory msg : received) {
                if (msg.value == null) {
                    continue;
                }
                filtered.add(msg);
                assertEquals(Action.NEW, msg.action);
                if (first) {
                    first = false;
                    lastCounter = (Integer) msg.value;
                } else {
                    int counter = (Integer) msg.value;
                    assertEquals(String.format("invalid msg received by %s : %s", receiver.getIdentity(), msg),
                            lastCounter + 1, counter);
                    lastCounter = counter;
                }
            }
            for (int i = 0; i < sent.size(); i++) {
                assertEquals(sent.get(i).value, filtered.get(i).value);
            }
        }
    }
}

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From source file:com.googlecode.xmlzen.XmlSlicerTest.java

@Test
public void testXmlSlicerListConcurrency() throws Exception {
    final CountDownLatch latch = new CountDownLatch(SLICER_ITERATIONS);
    final XmlSlicerList xsl = new XmlSlicerList();
    xsl.add(XmlSlicer.cut("1"));
    xsl.add(XmlSlicer.cut("2"));
    xsl.add(XmlSlicer.cut("3"));
    for (int i = 0; i < SLICER_ITERATIONS; i++) {
        new Thread(new Runnable() {
            public void run() {
                assertEquals(Arrays.asList(new String[] { "1", "2", "3" }), xsl.asList());
                latch.countDown();/*from   www . j  av  a2  s.c  om*/
            }
        }).start();
    }
    latch.await();
}

---

From source file:com.hazelcast.hibernate.app.Executor.java

public void execute() throws Exception {
    CountDownLatch latch = new CountDownLatch(1000);
    int count;/*  w w  w  . j a  va 2  s.  com*/

    Session session = sessionFactory.openSession();
    try {
        Criteria criteria = session.createCriteria(DummyEntity.class);
        criteria.setProjection(Projections.rowCount());
        count = ((Long) criteria.uniqueResult()).intValue();
    } finally {
        session.close();
    }

    if (count == 0) {
        count = 200000;
        insertDummyEntities(count, 100);
    }

    try {
        for (int i = 0; i < latch.getCount(); i++) {
            executorService.submit(new Task(i, sessionFactory, 1000, latch));
        }

        latch.await(1, TimeUnit.DAYS);
    } finally {
        executorService.shutdown();
    }
}

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