AtomicInteger actualOccupiedDepth = new AtomicInteger();
    AtomicReference<Throwable> thrown = new AtomicReference<>();
    joinUninterruptibly(
        startThread(
            new Runnable() {
              @Override
              public void run() {
                try {
                  actualIsOccupied.set(monitor.isOccupied());

    private val exceptions: BlockingQueue<Exception> = LinkedBlockingQueue()

    override fun execute(runnable: Runnable) {
      super.execute {
        try {
          runnable.run()
        } catch (e: Exception) {
          exceptions.add(e)
        }
      }
    }

    fun takeException(): Exception = exceptions.take()
  }

    cache.getUnchecked("a");
    shouldWait.set(true);

    CountDownLatch computationStarted = new CountDownLatch(1);
    CountDownLatch computationComplete = new CountDownLatch(1);
    new Thread(
            new Runnable() {
              @Override
              public void run() {
                computationStarted.countDown();
                cache.getUnchecked("b");
                computationComplete.countDown();

    cache.getUnchecked("a");
    shouldWait.set(true);

    CountDownLatch computationStarted = new CountDownLatch(1);
    CountDownLatch computationComplete = new CountDownLatch(1);
    new Thread(
            new Runnable() {
              @Override
              public void run() {
                computationStarted.countDown();
                cache.getUnchecked("b");
                computationComplete.countDown();

        final CountDownLatch endLatch = new CountDownLatch(threadCount);

        for (int i = 0; i < threadCount; i++) {
            final int threadId = i;
            new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        startLatch.await();
                        for (int j = 0; j < rulesPerThread; j++) {

  @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait.
  static void awaitWaiting(Thread t) {
    while (true) {
      Thread.State state = t.getState();
      switch (state) {
        case RUNNABLE:
        case BLOCKED:
          Thread.yield();
          break;
        case WAITING:
          return;
        default:
          throw new AssertionError("unexpected state: " + state);
      }
    }

        T,
        E>
    extends FeatureSpecificTestSuiteBuilder<B, G> {
  private static final Logger logger =
      Logger.getLogger(PerCollectionSizeTestSuiteBuilder.class.getName());

  /** Creates a runnable JUnit test suite based on the criteria already given. */
  @Override
  public TestSuite createTestSuite() {
    checkCanCreate();

    String name = getName();
    // Copy this set, so we can modify it.

              return 25;
            }
          });

  @Override
  protected void setUp() throws Exception {
    super.setUp();

    exec = newCachedThreadPool();

    task.addListener(
        new Runnable() {
          @Override
          public void run() {
            listenerLatch.countDown();
          }
        },
        directExecutor());
  }

  @Override

        ExecutorService executor = Executors.newFixedThreadPool(threadCount);

        for (int i = 0; i < threadCount; i++) {
            final int threadId = i;
            executor.submit(new Runnable() {
                @Override
                public void run() {
                    try {
                        startLatch.await();
                        for (int j = 0; j < operationsPerThread; j++) {

        final List<Exception> exceptions = new ArrayList<>();

        Thread[] threads = new Thread[threadCount];
        for (int i = 0; i < threadCount; i++) {
            threads[i] = new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        for (int j = 0; j < objectsPerThread; j++) {