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

Example 36 with Phaser

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

the class PhaserTest method testConstructorPartiesExceedsLimit.

/**
 * Constructing with a number of parties > 65535 throws
 * IllegalArgumentException
 */
public void testConstructorPartiesExceedsLimit() {
    new Phaser(maxParties);
    try {
        new Phaser(maxParties + 1);
        shouldThrow();
    } catch (IllegalArgumentException success) {
    }
    new Phaser(new Phaser(), maxParties);
    try {
        new Phaser(new Phaser(), maxParties + 1);
        shouldThrow();
    } catch (IllegalArgumentException success) {
    }
}

Example 37 with Phaser

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

the class PhaserTest method testRegisterEmptySubPhaser.

/**
 * register on a subphaser that is currently empty succeeds, even
 * in the presence of another non-empty subphaser
 */
public void testRegisterEmptySubPhaser() {
    Phaser root = new Phaser();
    Phaser child1 = new Phaser(root, 1);
    Phaser child2 = new Phaser(root, 0);
    assertEquals(0, child2.register());
    assertState(root, 0, 2, 2);
    assertState(child1, 0, 1, 1);
    assertState(child2, 0, 1, 1);
    assertEquals(0, child2.arriveAndDeregister());
    assertState(root, 0, 1, 1);
    assertState(child1, 0, 1, 1);
    assertState(child2, 0, 0, 0);
    assertEquals(0, child2.register());
    assertEquals(0, child2.arriveAndDeregister());
    assertState(root, 0, 1, 1);
    assertState(child1, 0, 1, 1);
    assertState(child2, 0, 0, 0);
    assertEquals(0, child1.arriveAndDeregister());
    assertTerminated(root, 1);
    assertTerminated(child1, 1);
    assertTerminated(child2, 1);
}

Example 38 with Phaser

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

the class PhaserTest method testAwaitAdvanceTieredPhaser.

/**
 * awaitAdvance returns the current phase in child phasers
 */
public void testAwaitAdvanceTieredPhaser() throws Exception {
    final Phaser parent = new Phaser();
    final List<Phaser> zeroPartyChildren = new ArrayList<>(3);
    final List<Phaser> onePartyChildren = new ArrayList<>(3);
    for (int i = 0; i < 3; i++) {
        zeroPartyChildren.add(new Phaser(parent, 0));
        onePartyChildren.add(new Phaser(parent, 1));
    }
    final List<Phaser> phasers = new ArrayList<>();
    phasers.addAll(zeroPartyChildren);
    phasers.addAll(onePartyChildren);
    phasers.add(parent);
    for (Phaser phaser : phasers) {
        assertEquals(-42, phaser.awaitAdvance(-42));
        assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42));
        assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42, MEDIUM_DELAY_MS, MILLISECONDS));
    }
    for (Phaser child : onePartyChildren) assertEquals(0, child.arrive());
    for (Phaser phaser : phasers) {
        assertEquals(-42, phaser.awaitAdvance(-42));
        assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42));
        assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42, MEDIUM_DELAY_MS, MILLISECONDS));
        assertEquals(1, phaser.awaitAdvance(0));
        assertEquals(1, phaser.awaitAdvanceInterruptibly(0));
        assertEquals(1, phaser.awaitAdvanceInterruptibly(0, MEDIUM_DELAY_MS, MILLISECONDS));
    }
    for (Phaser child : onePartyChildren) assertEquals(1, child.arrive());
    for (Phaser phaser : phasers) {
        assertEquals(-42, phaser.awaitAdvance(-42));
        assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42));
        assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42, MEDIUM_DELAY_MS, MILLISECONDS));
        assertEquals(2, phaser.awaitAdvance(0));
        assertEquals(2, phaser.awaitAdvanceInterruptibly(0));
        assertEquals(2, phaser.awaitAdvanceInterruptibly(0, MEDIUM_DELAY_MS, MILLISECONDS));
        assertEquals(2, phaser.awaitAdvance(1));
        assertEquals(2, phaser.awaitAdvanceInterruptibly(1));
        assertEquals(2, phaser.awaitAdvanceInterruptibly(1, MEDIUM_DELAY_MS, MILLISECONDS));
    }
}

Example 39 with Phaser

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

the class PhaserTest method testConstructor3.

/**
 * The parent provided to the constructor should be returned from
 * a later call to getParent
 */
public void testConstructor3() {
    Phaser parent = new Phaser();
    assertSame(parent, new Phaser(parent).getParent());
    assertNull(new Phaser(null).getParent());
}

Example 40 with Phaser

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

the class PhaserTest method testConstructorDefaultValues.

/**
 * Empty constructor builds a new Phaser with no parent, no registered
 * parties and initial phase number of 0
 */
public void testConstructorDefaultValues() {
    Phaser phaser = new Phaser();
    assertNull(phaser.getParent());
    assertEquals(0, phaser.getRegisteredParties());
    assertEquals(0, phaser.getArrivedParties());
    assertEquals(0, phaser.getUnarrivedParties());
    assertEquals(0, phaser.getPhase());
}