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

Example 26 with LinkedTransferQueue

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

the class LinkedTransferQueueTest method testTransfer2.

/**
 * transfer waits until a poll occurs. The transfered element
 * is returned by this associated poll.
 */
public void testTransfer2() throws InterruptedException {
    final LinkedTransferQueue<Integer> q = new LinkedTransferQueue<Integer>();
    final CountDownLatch threadStarted = new CountDownLatch(1);
    Thread t = newStartedThread(new CheckedRunnable() {

        public void realRun() throws InterruptedException {
            threadStarted.countDown();
            q.transfer(five);
            checkEmpty(q);
        }
    });
    threadStarted.await();
    Callable<Boolean> oneElement = new Callable<Boolean>() {

        public Boolean call() {
            return !q.isEmpty() && q.size() == 1;
        }
    };
    waitForThreadToEnterWaitState(t, oneElement);
    assertSame(five, q.poll());
    checkEmpty(q);
    awaitTermination(t);
}

Example 27 with LinkedTransferQueue

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

the class LinkedTransferQueueTest method testToArray.

/**
 * toArray() contains all elements in FIFO order
 */
public void testToArray() {
    LinkedTransferQueue q = populatedQueue(SIZE);
    Object[] o = q.toArray();
    for (int i = 0; i < o.length; i++) {
        assertSame(o[i], q.poll());
    }
}

Example 28 with LinkedTransferQueue

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

the class LinkedTransferQueueTest method testTryTransfer7.

/**
 * tryTransfer waits for any elements previously in to be removed
 * before transfering to a poll or take
 */
public void testTryTransfer7() throws InterruptedException {
    final LinkedTransferQueue q = new LinkedTransferQueue();
    assertTrue(q.offer(four));
    Thread t = newStartedThread(new CheckedRunnable() {

        public void realRun() throws InterruptedException {
            long startTime = System.nanoTime();
            assertTrue(q.tryTransfer(five, LONG_DELAY_MS, MILLISECONDS));
            assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
            checkEmpty(q);
        }
    });
    while (q.size() != 2) Thread.yield();
    assertEquals(2, q.size());
    assertSame(four, q.poll());
    assertSame(five, q.poll());
    checkEmpty(q);
    awaitTermination(t);
}

Example 29 with LinkedTransferQueue

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

the class LinkedTransferQueueTest method testTryTransfer5.

/**
 * tryTransfer blocks interruptibly if no takers
 */
public void testTryTransfer5() throws InterruptedException {
    final LinkedTransferQueue q = new LinkedTransferQueue();
    final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
    assertTrue(q.isEmpty());
    Thread t = newStartedThread(new CheckedRunnable() {

        public void realRun() throws InterruptedException {
            long startTime = System.nanoTime();
            Thread.currentThread().interrupt();
            try {
                q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
                shouldThrow();
            } catch (InterruptedException success) {
            }
            assertFalse(Thread.interrupted());
            pleaseInterrupt.countDown();
            try {
                q.tryTransfer(new Object(), LONG_DELAY_MS, MILLISECONDS);
                shouldThrow();
            } catch (InterruptedException success) {
            }
            assertFalse(Thread.interrupted());
            assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
        }
    });
    await(pleaseInterrupt);
    assertThreadStaysAlive(t);
    t.interrupt();
    awaitTermination(t);
    checkEmpty(q);
}

Example 30 with LinkedTransferQueue

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

the class LinkedTransferQueueTest method testTryTransfer2.

/**
 * tryTransfer returns false and does not enqueue if there are no
 * consumers waiting to poll or take.
 */
public void testTryTransfer2() throws InterruptedException {
    final LinkedTransferQueue q = new LinkedTransferQueue();
    assertFalse(q.tryTransfer(new Object()));
    assertFalse(q.hasWaitingConsumer());
    checkEmpty(q);
}