Examples with Phaser java8.util.concurrent.Phaser used on opensource projects

Example 31 with Phaser

use of java8.util.concurrent.Phaser in project streamsupport by stefan-zobel.

the class PhaserTest method testConstructorNegativeParties2.

/**
 * Constructing with a negative number of parties throws
 * IllegalArgumentException
 */
public void testConstructorNegativeParties2() {
    try {
        new Phaser(new Phaser(), -1);
        shouldThrow();
    } catch (IllegalArgumentException success) {
    }
}

Example 32 with Phaser

use of java8.util.concurrent.Phaser in project streamsupport by stefan-zobel.

the class PhaserTest method testAwaitAdvance4.

/**
 * awaitAdvance atomically waits for all parties within the same phase to
 * complete before continuing
 */
public void testAwaitAdvance4() {
    final Phaser phaser = new Phaser(4);
    final AtomicInteger count = new AtomicInteger(0);
    List<Thread> threads = new ArrayList<>();
    for (int i = 0; i < 4; i++) threads.add(newStartedThread(new CheckedRunnable() {

        public void realRun() {
            for (int k = 0; k < 3; k++) {
                assertEquals(2 * k + 1, phaser.arriveAndAwaitAdvance());
                count.incrementAndGet();
                assertEquals(2 * k + 1, phaser.arrive());
                assertEquals(2 * k + 2, phaser.awaitAdvance(2 * k + 1));
                assertEquals(4 * (k + 1), count.get());
            }
        }
    }));
    for (Thread thread : threads) awaitTermination(thread);
}

Example 33 with Phaser

use of java8.util.concurrent.Phaser in project streamsupport by stefan-zobel.

the class PhaserTest method testAwaitAdvance1.

/**
 * awaitAdvance succeeds upon advance
 */
public void testAwaitAdvance1() {
    final Phaser phaser = new Phaser(1);
    assertEquals(0, phaser.arrive());
    assertEquals(1, phaser.awaitAdvance(0));
}

Example 34 with Phaser

use of java8.util.concurrent.Phaser in project streamsupport by stefan-zobel.

the class PhaserTest method testRegister2.

/**
 * Registering more than 65536 parties causes IllegalStateException
 */
public void testRegister2() {
    Phaser phaser = new Phaser(0);
    assertState(phaser, 0, 0, 0);
    assertEquals(0, phaser.bulkRegister(maxParties - 10));
    assertState(phaser, 0, maxParties - 10, maxParties - 10);
    for (int i = 0; i < 10; i++) {
        assertState(phaser, 0, maxParties - 10 + i, maxParties - 10 + i);
        assertEquals(0, phaser.register());
    }
    assertState(phaser, 0, maxParties, maxParties);
    try {
        phaser.register();
        shouldThrow();
    } catch (IllegalStateException success) {
    }
    try {
        phaser.bulkRegister(Integer.MAX_VALUE);
        shouldThrow();
    } catch (IllegalStateException success) {
    }
    assertEquals(0, phaser.bulkRegister(0));
    assertState(phaser, 0, maxParties, maxParties);
}

Example 35 with Phaser

use of java8.util.concurrent.Phaser in project streamsupport by stefan-zobel.

the class PhaserTest method testArriveAndDeregister2.

/**
 * arriveAndDeregister reduces the number of arrived parties
 */
public void testArriveAndDeregister2() {
    final Phaser phaser = new Phaser(1);
    assertEquals(0, phaser.register());
    assertEquals(0, phaser.arrive());
    assertState(phaser, 0, 2, 1);
    assertEquals(0, phaser.arriveAndDeregister());
    assertState(phaser, 1, 1, 1);
}