Example usage for java.util.concurrent CountDownLatch CountDownLatch

List of usage examples for java.util.concurrent CountDownLatch CountDownLatch

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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:it.stilo.g.util.WeightedZIPFianGenerator.java

public static void generate(WeightedDirectedGraph g, double exponent, int degree, int runner) {

    long time = System.currentTimeMillis();
    final CountDownLatch latch = new CountDownLatch(runner);

    ZipfDistribution dist = new ZipfDistribution(g.size, exponent);
    Thread[] workers = new Thread[runner];
    for (int i = 0; i < runner; i++) {
        workers[i] = new Thread(new WeightedZIPFianGenerator(g, latch, dist, degree, i, runner));
        workers[i].setName("" + i);
        workers[i].start();//w  ww.java 2  s .  c  o m
    }

    try {
        latch.await();
    } catch (InterruptedException e) {
        logger.debug(e);
    }

    logger.info(WeightedZIPFianGenerator.class.getName() + "\t" + ((System.currentTimeMillis() - time) / 1000d)
            + "s");
}

From source file:ch.cyberduck.core.http.DelayedHttpEntity.java

public DelayedHttpEntity() {
    this(new CountDownLatch(1));
}

From source file:com.liferay.mobile.android.CookieAuthenticationTest.java

@Test
public void signIn() throws Exception {
    Session session = new SessionImpl(this.session);
    final JSONArray[] sites = { null };
    final CountDownLatch lock = new CountDownLatch(1);

    CookieSignIn.signIn(session, new CookieSignIn.CookieCallback() {

        @Override/*w  w w  . j a  v a 2s.co m*/
        public void onSuccess(Session session) {
            try {
                GroupService service = new GroupService(session);
                sites[0] = service.getUserSitesGroups();
                lock.countDown();
            } catch (Exception e) {
                onFailure(e);
            }
        }

        @Override
        public void onFailure(Exception exception) {
            fail(exception.getMessage());
            lock.countDown();
        }

    });

    lock.await(2000, TimeUnit.MILLISECONDS);
    GroupServiceTest.assertUserSites(sites[0]);
}

From source file:com.frostwire.search.VuzeMagnetDownloader.java

public byte[] download(String magnet, int timeout) {

    CountDownLatch signal = new CountDownLatch(1);

    String saveDir = SharingSettings.TORRENTS_DIR_SETTING.getValue().getAbsolutePath();

    TorrentDownloaderListener listener = new TorrentDownloaderListener(signal);

    TorrentDownloader td = TorrentDownloaderFactory.create(listener, magnet, null, saveDir);

    td.start();//  w w w  . j  a va  2s  .  c o  m

    try {
        signal.await(timeout, TimeUnit.MILLISECONDS);
    } catch (InterruptedException e) {
        // ignore
    }

    if (listener.getData() == null) {
        td.cancel();
    }

    return listener.getData();
}

From source file:io.dropwizard.websockets.DropWizardWebsocketsTest.java

@BeforeClass
public static void setUpClass() throws InterruptedException, IOException {
    CountDownLatch serverStarted = new CountDownLatch(1);
    Thread serverThread = new Thread(GeneralUtils.rethrow(() -> new MyApp(serverStarted)
            .run(new String[] { "server", Resources.getResource("server.yml").getPath() })));
    serverThread.setDaemon(true);/*  w  w  w. j av  a 2  s  .  com*/
    serverThread.start();
    serverStarted.await(10, SECONDS);
}

From source file:com.kurento.kmf.media.AbstractAsyncBaseTest.java

protected static void releaseMediaObject(final MediaObject mo) throws InterruptedException {
    final CountDownLatch latch = new CountDownLatch(1);

    mo.release(new Continuation<Void>() {
        @Override/*from  w ww .j ava2  s.co  m*/
        public void onSuccess(Void result) {
            latch.countDown();
        }

        @Override
        public void onError(Throwable cause) {
            throw new KurentoMediaFrameworkException(cause);
        }
    });
    Assert.assertTrue(latch.await(500, MILLISECONDS));
}

From source file:com.alibaba.druid.DBCPTest.java

public void test_max() throws Exception {
    Class.forName("com.alibaba.druid.mock.MockDriver");

    final BasicDataSource dataSource = new BasicDataSource();
    //        final DruidDataSource dataSource = new DruidDataSource();
    dataSource.setInitialSize(3);/*from   w  ww  .j a v a2s  .c om*/
    dataSource.setMaxActive(20);
    dataSource.setMaxIdle(20);
    dataSource.setDriverClassName("com.alibaba.druid.mock.MockDriver");
    dataSource.setUrl("jdbc:mock:xxx");

    final int THREAD_COUNT = 200;
    final CountDownLatch endLatch = new CountDownLatch(THREAD_COUNT);
    final CountDownLatch startLatch = new CountDownLatch(1);
    Thread[] threads = new Thread[THREAD_COUNT];
    for (int i = 0; i < THREAD_COUNT; ++i) {
        threads[i] = new Thread() {

            public void run() {
                try {
                    startLatch.await();
                    for (int i = 0; i < 1000; ++i) {
                        Connection conn = dataSource.getConnection();
                        Thread.sleep(1);
                        conn.close();
                    }
                } catch (Exception e) {
                } finally {
                    endLatch.countDown();
                }
            }
        };
        threads[i].start();
    }

    startLatch.countDown();

    endLatch.await();

    //        System.out.println(dataSource.getNumIdle());
    System.out.println(MockDriver.instance.getConnections().size());
    System.out.println(MockDriver.instance.getConnectionCloseCount());
}

From source file:org.dataconservancy.packaging.gui.BaseGuiTest.java

/**
 * Wait until a JavaFX application is launched.
 * /*from ww w  .j a  va 2s.co m*/
 * TODO: Use the regular app class and modify it to expose various properties to tests?
 * @throws InterruptedException
 */

@BeforeClass
public static void setupJavaFX() throws InterruptedException {
    if (javafx_setup_latch != null) {
        return;
    }

    javafx_setup_latch = new CountDownLatch(1);

    Runnable init = () -> Application.launch(SkeletonApp.class);

    System.out.println("JavaFx initialising...");
    long timeMillis = System.currentTimeMillis();

    new Thread(init).start();

    javafx_setup_latch.await();

    System.out.println("JavaFx is initialised in " + (System.currentTimeMillis() - timeMillis) + "ms");
}

From source file:com.skype.connector.linux.SkypeFramework.java

static void init() throws LoadLibraryException {
    synchronized (initializedFieldMutex) {
        if (!initialized) {
            if (SystemUtils.OS_ARCH.contains("64")) {
                ConnectorUtils.loadLibrary(getLibName("x64"));
            } else {
                ConnectorUtils.loadLibrary(getLibName("x86"));
            }/*from  ww w.  j  a  v a2  s.co  m*/
            setup0();

            eventLoopFinishedLatch = new CountDownLatch(1);
            eventLoop = new Thread(new Runnable() {
                public void run() {
                    runEventLoop0();
                    eventLoopFinishedLatch.countDown();
                }
            }, "Skype4Java Event Loop");
            eventLoop.setDaemon(true);
            eventLoop.start();
            initialized = true;
        }
    }
}

From source file:jcuda.jcublas.kernel.TestMultipleThreads.java

@Test
public void testMultipleThreads() throws InterruptedException {
    int numThreads = 10;
    final INDArray array = Nd4j.rand(3000, 3000);
    final INDArray expected = array.dup().mmul(array).mmul(array).div(array).div(array);
    final AtomicInteger correct = new AtomicInteger();
    final CountDownLatch latch = new CountDownLatch(numThreads);

    ExecutorService executors = Executors.newCachedThreadPool();

    for (int x = 0; x < numThreads; x++) {
        executors.execute(new Runnable() {
            @Override/*from  www  .j  a  va  2s  . c  om*/
            public void run() {
                try {
                    int total = 10;
                    int right = 0;
                    for (int x = 0; x < total; x++) {
                        StopWatch watch = new StopWatch();
                        watch.start();
                        INDArray actual = array.dup().mmul(array).mmul(array).div(array).div(array);
                        watch.stop();
                        System.out.println("MMUL took " + watch.getTime());
                        if (expected.equals(actual))
                            right++;
                    }

                    if (total == right)
                        correct.incrementAndGet();
                } finally {
                    latch.countDown();
                }

            }
        });
    }

    latch.await();

    assertEquals(numThreads, correct.get());

}