Example usage for java.util.concurrent FutureTask FutureTask

Introduction

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

Prototype

public FutureTask(Callable<V> callable)

Source Link

Document

Creates a FutureTask that will, upon running, execute the given Callable .

Usage

From source file:Main.java

public static void blockUntilConnected(final SocketChannel channel, long timeout) throws IOException {
    ThreadPoolExecutor executor = new ThreadPoolExecutor(1, 1, timeout, TimeUnit.MILLISECONDS,
            new LinkedBlockingQueue<Runnable>());
    FutureTask<Boolean> future = new FutureTask<Boolean>(new Callable<Boolean>() {
        public Boolean call() {
            while (!channel.isConnected()) {
                try {
                    Thread.sleep(300);
                } catch (InterruptedException e) {
                }//from w  ww  . j ava2  s. com
            }
            return true;
        }
    });
    executor.execute(future);

    try {
        future.get(timeout, TimeUnit.MILLISECONDS);
    } catch (Exception e) {
        channel.close();
        throw new IOException(e);
    }
}

From source file:net.dryuf.concurrent.benchmark.BenchmarkSupport.java

public static FutureTask<Integer>[] populateJdkFutureArray(int count) {
    Callable<Integer> func = () -> {
        return 0;
    };//from  w ww. ja  v  a  2 s .  c o  m
    FutureTask<Integer>[] array = new FutureTask[count];
    for (int i = 0; i < count; ++i) {
        array[i] = new FutureTask<Integer>(func);
    }
    return array;
}

From source file:Main.java

public static <T> T invokeAndWait(Callable<T> callable)
        throws TimeoutException, ExecutionException, InterruptedException {
    //blocks until future returns
    FutureTask<T> task = new FutureTask<>(callable);
    SwingUtilities.invokeLater(task);
    return task.get();
}

From source file:Main.java

/**
 * Run the supplied Callable on the main thread, The method will block until the Callable
 * completes./*  w ww.  j a  v  a  2 s  . c o  m*/
 *
 * @param c The Callable to run
 * @return The result of the callable
 * @throws ExecutionException c's exception
 */
public static <T> T runOnUiThreadBlocking(Callable<T> c) throws ExecutionException {
    FutureTask<T> task = new FutureTask<T>(c);
    runOnUiThread(task);
    try {
        return task.get();
    } catch (InterruptedException e) {
        throw new RuntimeException("Interrupted waiting for callable", e);
    }
}

From source file:Main.java

/**
 * Submits a value-returning task for execution on the EDT and
 * returns a Future representing the pending results of the task.
 *
 * @param task the task to submit//from w w  w. j av a2s.  c  om
 * @return a Future representing pending completion of the task
 * @throws NullPointerException if the task is null
 */
public static <V> Future<V> submit(Callable<V> task) {
    if (task == null) {
        throw new NullPointerException();
    }
    FutureTask<V> future = new FutureTask<V>(task);
    execute(future);
    return future;
}

From source file:com.vaadin.tools.ReportUsage.java

public static FutureTask<Void> checkForUpdatesInBackgroundThread() {
    FutureTask<Void> task = new FutureTask<>(new Callable<Void>() {
        @Override/*from w w w. j av a 2s  . co  m*/
        public Void call() throws Exception {
            ReportUsage.report();
            return null;
        }
    });
    Thread checkerThread = new Thread(task, "Vaadin Update Checker");
    checkerThread.setDaemon(true);
    checkerThread.start();
    return task;
}

From source file:net.dryuf.concurrent.benchmark.NoListenerBenchmark.java

@Benchmark
@Warmup(iterations = WARMUP_ITERATIONS)//ww  w.j a  va2 s.  c  o m
@Measurement(iterations = 2, batchSize = 1)
@Fork(warmups = 1, value = 1)
public void benchmarkJdk() throws Exception {
    for (long i = 0; i < COUNT; ++i) {
        FutureTask<Integer> future = new FutureTask<Integer>(() -> {
            return 0;
        });
        future.run();
    }
}

From source file:com.wk.wechat4j.base.util.SettableFuture.java

public SettableFuture() {
    this.settableTask = new SettableTask<T>();
    this.futureTask = new FutureTask<T>(this.settableTask);
}

From source file:br.com.sicoob.cro.cop.batch.step.StepTaskletExecutor.java

public void start() throws Exception {
    ConstructorUtils.invokeConstructor(TaskletInjector.class, this.step).inject();
    TaskletExecutor taskletExecutor = new TaskletExecutor(this.step);
    this.task = new FutureTask(taskletExecutor);
    this.service.executeTask(task);
}

From source file:org.sipfoundry.sipxconfig.admin.configdiag.ConfigurationDiagnosticContextImpl.java

/**
 * Similar to ExecutorService.invokeAll but this method is not going to block. You can check
 * the progress later by analysing returned futures.
 *//*from   w  w  w . j  a  v a 2s. c o  m*/
static <T> List<Future<T>> scheduleAll(Executor executor, Collection<? extends Callable<T>> tasks)
        throws InterruptedException {
    List<Future<T>> futures = new ArrayList<Future<T>>(tasks.size());
    for (Callable<T> t : tasks) {
        FutureTask<T> f = new FutureTask<T>(t);
        futures.add(f);
        executor.execute(f);
    }
    return futures;
}