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

Example 1 with CopyOnWriteArraySet

use of java.util.concurrent.CopyOnWriteArraySet in project elastic-job by dangdangdotcom.

the class ExecutorServiceHandlerRegistryTest method assertGetExecutorServiceHandlerForConcurrent.

@Test
public void assertGetExecutorServiceHandlerForConcurrent() throws InterruptedException {
    int threadCount = 100;
    CyclicBarrier barrier = new CyclicBarrier(threadCount);
    ExecutorService executorService = Executors.newFixedThreadPool(threadCount);
    CountDownLatch latch = new CountDownLatch(threadCount);
    Set<ExecutorService> set = new CopyOnWriteArraySet<>();
    for (int i = 0; i < threadCount; i++) {
        executorService.submit(new GetExecutorServiceHandlerTask(barrier, latch, set));
    }
    latch.await();
    assertThat(set.size(), is(1));
    assertThat(ExecutorServiceHandlerRegistry.getExecutorServiceHandler("test_job", new DefaultExecutorServiceHandler()), is(set.iterator().next()));
}

Example 2 with CopyOnWriteArraySet

use of java.util.concurrent.CopyOnWriteArraySet in project druid by alibaba.

the class WebAppStatManager method getWebAppStatSet0.

@SuppressWarnings("unchecked")
static Set<Object> getWebAppStatSet0() {
    Properties properties = System.getProperties();
    Set<Object> webAppStats = (Set<Object>) properties.get(SYS_PROP_INSTANCES);
    if (webAppStats == null) {
        synchronized (properties) {
            webAppStats = (Set<Object>) properties.get(SYS_PROP_INSTANCES);
            if (webAppStats == null) {
                webAppStats = new CopyOnWriteArraySet<Object>();
                properties.put(SYS_PROP_INSTANCES, webAppStats);
            }
        }
    }
    return webAppStats;
}

Example 3 with CopyOnWriteArraySet

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

the class CopyOnWriteArraySetTest method testSize.

/**
     * size returns the number of elements
     */
public void testSize() {
    Collection empty = new CopyOnWriteArraySet();
    Collection full = populatedSet(3);
    assertEquals(3, full.size());
    assertEquals(0, empty.size());
}

Example 4 with CopyOnWriteArraySet

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

the class CopyOnWriteArraySetTest method testContainsAll.

/**
     * containsAll returns true for collections with subset of elements
     */
public void testContainsAll() {
    Collection full = populatedSet(3);
    assertTrue(full.containsAll(full));
    assertTrue(full.containsAll(Arrays.asList()));
    assertTrue(full.containsAll(Arrays.asList(one)));
    assertTrue(full.containsAll(Arrays.asList(one, two)));
    assertFalse(full.containsAll(Arrays.asList(one, two, six)));
    assertFalse(full.containsAll(Arrays.asList(six)));
    CopyOnWriteArraySet empty1 = new CopyOnWriteArraySet(Arrays.asList());
    CopyOnWriteArraySet empty2 = new CopyOnWriteArraySet(Arrays.asList());
    assertTrue(empty1.containsAll(empty2));
    assertTrue(empty1.containsAll(empty1));
    assertFalse(empty1.containsAll(full));
    assertTrue(full.containsAll(empty1));
    try {
        full.containsAll(null);
        shouldThrow();
    } catch (NullPointerException success) {
    }
}

Example 5 with CopyOnWriteArraySet

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

the class CopyOnWriteArraySetTest method testToArray_ArrayStoreException.

/**
     * toArray throws an ArrayStoreException when the given array can
     * not store the objects inside the set
     */
public void testToArray_ArrayStoreException() {
    CopyOnWriteArraySet c = new CopyOnWriteArraySet();
    c.add("zfasdfsdf");
    c.add("asdadasd");
    try {
        c.toArray(new Long[5]);
        shouldThrow();
    } catch (ArrayStoreException success) {
    }
}