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

Example 41 with LinkedBlockingQueue

use of java.util.concurrent.LinkedBlockingQueue in project mapdb by jankotek.

the class LinkedBlockingQueueTest method testPollInExecutor.

/**
     * timed poll retrieves elements across Executor threads
     */
public void testPollInExecutor() {
    final LinkedBlockingQueue q = new LinkedBlockingQueue(2);
    final CheckedBarrier threadsStarted = new CheckedBarrier(2);
    final ExecutorService executor = Executors.newFixedThreadPool(2);
    try (PoolCleaner cleaner = cleaner(executor)) {
        executor.execute(new CheckedRunnable() {

            public void realRun() throws InterruptedException {
                assertNull(q.poll());
                threadsStarted.await();
                assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS));
                checkEmpty(q);
            }
        });
        executor.execute(new CheckedRunnable() {

            public void realRun() throws InterruptedException {
                threadsStarted.await();
                q.put(one);
            }
        });
    }
}

Example 42 with LinkedBlockingQueue

use of java.util.concurrent.LinkedBlockingQueue in project mapdb by jankotek.

the class LinkedBlockingQueueTest method testToArray.

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

Example 43 with LinkedBlockingQueue

use of java.util.concurrent.LinkedBlockingQueue in project mapdb by jankotek.

the class LinkedBlockingQueueTest method testAddAllSelf.

/**
     * addAll(this) throws IllegalArgumentException
     */
public void testAddAllSelf() {
    LinkedBlockingQueue q = populatedQueue(SIZE);
    try {
        q.addAll(q);
        shouldThrow();
    } catch (IllegalArgumentException success) {
    }
}

Example 44 with LinkedBlockingQueue

use of java.util.concurrent.LinkedBlockingQueue in project mapdb by jankotek.

the class LinkedBlockingQueueTest method testRemoveAll.

/**
     * removeAll(c) removes only those elements of c and reports true if changed
     */
public void testRemoveAll() {
    for (int i = 1; i < SIZE; ++i) {
        LinkedBlockingQueue q = populatedQueue(SIZE);
        LinkedBlockingQueue p = populatedQueue(i);
        assertTrue(q.removeAll(p));
        assertEquals(SIZE - i, q.size());
        for (int j = 0; j < i; ++j) {
            Integer x = (Integer) (p.remove());
            assertFalse(q.contains(x));
        }
    }
}

Example 45 with LinkedBlockingQueue

use of java.util.concurrent.LinkedBlockingQueue in project mapdb by jankotek.

the class LinkedBlockingQueueTest method testAddAll5.

/**
     * Queue contains all elements, in traversal order, of successful addAll
     */
public void testAddAll5() {
    Integer[] empty = new Integer[0];
    Integer[] ints = new Integer[SIZE];
    for (int i = 0; i < SIZE; ++i) ints[i] = new Integer(i);
    LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE);
    assertFalse(q.addAll(Arrays.asList(empty)));
    assertTrue(q.addAll(Arrays.asList(ints)));
    for (int i = 0; i < SIZE; ++i) assertEquals(ints[i], q.poll());
}