}

  @ParametricNullness
  @SuppressWarnings("nullness") // TODO(b/147136275): Remove once our checker understands & and |.
  final V blockingGet() throws InterruptedException, ExecutionException {
    if (Thread.interrupted()) {
      throw new InterruptedException();
    }
    @RetainedLocalRef Object localValue = valueField;
    if (localValue != null & notInstanceOfDelegatingToFuture(localValue)) {

                try {
                    startLatch.await();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

                // wait for all thread to end
                try {
                    endLatch.await();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

    assertTrue(future.isDone());
    assertFalse(future.isCancelled());
  }

  /** Tests that the {@link Future#get(long, TimeUnit)} method times out correctly. */
  public void testTimeoutOnGetWorksCorrectly() throws InterruptedException, ExecutionException {

    // The task thread waits for the latch, so we expect a timeout here.
    try {
      future.get(20, MILLISECONDS);
      fail("Should have timed out trying to get the value.");

        CountDownLatch latch = new CountDownLatch(1);
        AtomicInteger customThreadFound = new AtomicInteger(0);

        // Create a custom thread with recognizable name
        Thread customThread = new Thread(() -> {
            try {
                latch.await();
            } catch (InterruptedException e) {

        int result = -1;

        synchronized (lock) {
            try {
                while (used == 0) {
                    lock.wait();
                }
            } catch (final InterruptedException ie) {
                throw new IOException(ie.getMessage());
            }
            result = pipe_buf[beg_idx] & 0xFF;
            beg_idx = (beg_idx + 1) % pipe_buf.length;
        }
        return result;

  private volatile boolean completed = false;

  @Override
  public void setUp() {
    builder = new ThreadFactoryBuilder();
  }

  public void testThreadFactoryBuilder_defaults() throws InterruptedException {
    ThreadFactory threadFactory = builder.build();
    Thread thread = threadFactory.newThread(monitoredRunnable);
    checkThreadPoolName(thread, 1);

   * specified, may re-sleep or yield until time elapses.
   */
  @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait?
  static void delay(long millis) throws InterruptedException {
    long startTime = System.nanoTime();
    long ns = millis * 1000 * 1000;
    for (; ; ) {
      if (millis > 0L) {
        Thread.sleep(millis);
      } else {
        // too short to sleep

  @CanIgnoreReturnValue
  public static <V extends @Nullable Object> V getUninterruptibly(Future<V> future)
      throws ExecutionException {
    try {
      return future.get();
    } catch (InterruptedException e) {
      // Should never be thrown in GWT but play it safe
      throw new IllegalStateException(e);
    }
  }

  private volatile boolean completed = false;

  @Override
  public void setUp() {
    builder = new ThreadFactoryBuilder();
  }

  public void testThreadFactoryBuilder_defaults() throws InterruptedException {
    ThreadFactory threadFactory = builder.build();
    Thread thread = threadFactory.newThread(monitoredRunnable);
    checkThreadPoolName(thread, 1);

   * for space to become available if the queue is full.
   *
   * @throws InterruptedException {@inheritDoc}
   * @throws NullPointerException {@inheritDoc}
   */
  @CanIgnoreReturnValue
  @Override
  public boolean offer(E e, long timeout, TimeUnit unit) throws InterruptedException {
    checkNotNull(e);
    Monitor monitor = this.monitor;
    if (monitor.enterWhen(notFull, timeout, unit)) {