Examples with LinkedTransferQueue java.util.concurrent.LinkedTransferQueue used on opensource projects

Example 21 with LinkedTransferQueue

use of java.util.concurrent.LinkedTransferQueue in project j2objc by google.

the class LinkedTransferQueueTest method testDrainToN.

/**
 * drainTo(c, n) empties first min(n, size) elements of queue into c
 */
public void testDrainToN() {
    LinkedTransferQueue q = new LinkedTransferQueue();
    for (int i = 0; i < SIZE + 2; ++i) {
        for (int j = 0; j < SIZE; j++) {
            assertTrue(q.offer(j));
        }
        ArrayList l = new ArrayList();
        q.drainTo(l, i);
        int k = (i < SIZE) ? i : SIZE;
        assertEquals(k, l.size());
        assertEquals(SIZE - k, q.size());
        for (int j = 0; j < k; ++j) assertEquals(j, l.get(j));
        do {
        } while (q.poll() != null);
    }
}

Example 22 with LinkedTransferQueue

use of java.util.concurrent.LinkedTransferQueue in project j2objc by google.

the class LinkedTransferQueueTest method testWaitingConsumer.

/**
 * timed poll() or take() increments the waiting consumer count;
 * offer(e) decrements the waiting consumer count
 */
public void testWaitingConsumer() throws InterruptedException {
    final LinkedTransferQueue q = new LinkedTransferQueue();
    assertEquals(0, q.getWaitingConsumerCount());
    assertFalse(q.hasWaitingConsumer());
    final CountDownLatch threadStarted = new CountDownLatch(1);
    Thread t = newStartedThread(new CheckedRunnable() {

        public void realRun() throws InterruptedException {
            threadStarted.countDown();
            long startTime = System.nanoTime();
            assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
            assertEquals(0, q.getWaitingConsumerCount());
            assertFalse(q.hasWaitingConsumer());
            assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
        }
    });
    threadStarted.await();
    Callable<Boolean> oneConsumer = new Callable<Boolean>() {

        public Boolean call() {
            return q.hasWaitingConsumer() && q.getWaitingConsumerCount() == 1;
        }
    };
    waitForThreadToEnterWaitState(t, oneConsumer);
    assertTrue(q.offer(one));
    assertEquals(0, q.getWaitingConsumerCount());
    assertFalse(q.hasWaitingConsumer());
    awaitTermination(t);
}

Example 23 with LinkedTransferQueue

use of java.util.concurrent.LinkedTransferQueue in project j2objc by google.

the class LinkedTransferQueueTest method testToArray1_BadArg.

/**
 * toArray(incompatible array type) throws ArrayStoreException
 */
public void testToArray1_BadArg() {
    LinkedTransferQueue q = populatedQueue(SIZE);
    try {
        q.toArray(new String[10]);
        shouldThrow();
    } catch (ArrayStoreException success) {
    }
}

Example 24 with LinkedTransferQueue

use of java.util.concurrent.LinkedTransferQueue in project j2objc by google.

the class LinkedTransferQueueTest method testToString.

/**
 * toString contains toStrings of elements
 */
public void testToString() {
    LinkedTransferQueue q = populatedQueue(SIZE);
    String s = q.toString();
    for (int i = 0; i < SIZE; ++i) {
        assertTrue(s.contains(String.valueOf(i)));
    }
}

Example 25 with LinkedTransferQueue

use of java.util.concurrent.LinkedTransferQueue in project j2objc by google.

the class LinkedTransferQueueTest method testIterator.

/**
 * iterator iterates through all elements
 */
public void testIterator() throws InterruptedException {
    LinkedTransferQueue q = populatedQueue(SIZE);
    Iterator it = q.iterator();
    int i;
    for (i = 0; it.hasNext(); i++) assertTrue(q.contains(it.next()));
    assertEquals(i, SIZE);
    assertIteratorExhausted(it);
    it = q.iterator();
    for (i = 0; it.hasNext(); i++) assertEquals(it.next(), q.take());
    assertEquals(i, SIZE);
    assertIteratorExhausted(it);
}