--ntasks;
      int active = 1;

      while (true) {
        Future<T> f = futureQueue.poll();
        if (f == null) {
          if (ntasks > 0) {
            --ntasks;
            futures.add(submitAndAddQueueListener(executorService, it.next(), futureQueue));
            ++active;
          } else if (active == 0) {
            break;
          } else if (timed) {

    // no notification sent with removeLoadingValue
    assertTrue(map.removalNotificationQueue.isEmpty());
    assertEquals(0, segment.count);
    assertNull(table.get(0));

    // active
    Object value = new Object();
    DummyValueReference<Object, Object> previousRef = DummyValueReference.create(value);
    valueRef = new LoadingValueReference<>(previousRef);
    entry.setValueReference(valueRef);

    // no notification sent with removeLoadingValue
    assertTrue(map.removalNotificationQueue.isEmpty());
    assertEquals(0, segment.count);
    assertNull(table.get(0));

    // active
    Object value = new Object();
    DummyValueReference<Object, Object> previousRef = DummyValueReference.create(value);
    valueRef = new LoadingValueReference<>(previousRef);
    entry.setValueReference(valueRef);