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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.concurrent.atomic.AtomicInteger; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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try { |
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new Phaser(-1); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) { |
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} |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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try { |
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new Phaser(new Phaser(), -1); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) { |
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} |
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} catch (IllegalArgumentException success) {} |
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} |
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/** |
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try { |
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phaser.register(); |
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shouldThrow(); |
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} catch (IllegalStateException success) { |
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} |
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} catch (IllegalStateException success) {} |
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} |
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|
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/** |
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try { |
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new Phaser().bulkRegister(-1); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) { |
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} |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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try { |
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new Phaser().bulkRegister(1 << 16); |
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shouldThrow(); |
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} catch (IllegalStateException success) { |
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} |
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} catch (IllegalStateException success) {} |
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} |
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/** |
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} |
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/** |
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* Arrive() on a registered phaser increments phase. |
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* Arrive() on a registered phaser increments phase. |
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*/ |
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public void testArrive1() { |
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Phaser phaser = new Phaser(1); |
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for (int i = 0; i < 10; i++) |
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phaser.register(); |
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threads.add(newStartedThread(new CheckedRunnable() { |
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void realRun() throws InterruptedException { |
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public void realRun() throws InterruptedException { |
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Thread.sleep(SMALL_DELAY_MS); |
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phaser.arriveAndDeregister(); |
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}})); |
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Phaser phaser = new Phaser(); |
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phaser.arriveAndDeregister(); |
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shouldThrow(); |
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} catch (IllegalStateException success) { |
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} |
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} catch (IllegalStateException success) {} |
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} |
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/** |
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phaser.register(); |
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phaser.arrive(); |
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int p = phaser.getArrivedParties(); |
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assertTrue(p == 1); |
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assertEquals(1, p); |
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phaser.arriveAndDeregister(); |
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assertTrue(phaser.getArrivedParties() < p); |
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} |
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assertTrue(parent.getUnarrivedParties() > 0); |
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assertTrue(root.getUnarrivedParties() > 0); |
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root.arriveAndDeregister(); |
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assertTrue(parent.getUnarrivedParties() == 0); |
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assertTrue(root.getUnarrivedParties() == 0); |
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assertEquals(0, parent.getUnarrivedParties()); |
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assertEquals(0, root.getUnarrivedParties()); |
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assertTrue(root.isTerminated() && parent.isTerminated()); |
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} |
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assertTrue(child.getUnarrivedParties() > 0); |
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root.register(); |
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root.arriveAndDeregister(); |
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assertTrue(parent.getUnarrivedParties() == 0); |
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assertTrue(child.getUnarrivedParties() == 0); |
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assertEquals(0, parent.getUnarrivedParties()); |
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assertEquals(0, child.getUnarrivedParties()); |
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assertTrue(root.isTerminated()); |
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} |
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public void testArriveAndDeregister6() throws InterruptedException { |
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final Phaser phaser = new Phaser(2); |
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Thread t = newStartedThread(new CheckedRunnable() { |
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void realRun() { |
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public void realRun() { |
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sleepTillInterrupted(SHORT_DELAY_MS); |
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phaser.arrive(); |
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}}); |
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public void testAwaitAdvance3() throws InterruptedException { |
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final Phaser phaser = new Phaser(); |
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phaser.register(); |
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final CountDownLatch threadStarted = new CountDownLatch(1); |
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Thread t = newStartedThread(new CheckedRunnable() { |
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void realRun() throws InterruptedException { |
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public void realRun() throws InterruptedException { |
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phaser.register(); |
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sleepTillInterrupted(LONG_DELAY_MS); |
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threadStarted.countDown(); |
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phaser.awaitAdvance(phaser.arrive()); |
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assertTrue(Thread.currentThread().isInterrupted()); |
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}}); |
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Thread.sleep(SMALL_DELAY_MS); |
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assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
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t.interrupt(); |
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Thread.sleep(SMALL_DELAY_MS); |
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phaser.arrive(); |
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assertFalse(t.isInterrupted()); |
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t.join(); |
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awaitTermination(t, SMALL_DELAY_MS); |
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} |
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|
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/** |
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List<Thread> threads = new ArrayList<Thread>(); |
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for (int i = 0; i < 4; i++) { |
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threads.add(newStartedThread(new CheckedRunnable() { |
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void realRun() { |
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public void realRun() { |
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int phase = phaser.arrive(); |
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phaseCount.incrementAndGet(); |
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sleepTillInterrupted(SMALL_DELAY_MS); |
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phaser.awaitAdvance(phase); |
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threadAssertTrue(phaseCount.get() == 4); |
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assertEquals(phaseCount.get(), 4); |
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}})); |
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} |
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for (Thread thread : threads) |
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phaser.register(); |
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List<Thread> threads = new ArrayList<Thread>(); |
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for (int i = 0; i < 8; i++) { |
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final CountDownLatch latch = new CountDownLatch(1); |
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final boolean goesFirst = ((i & 1) == 0); |
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threads.add(newStartedThread(new CheckedRunnable() { |
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void realRun() { |
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sleepTillInterrupted(SHORT_DELAY_MS); |
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public void realRun() throws InterruptedException { |
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if (goesFirst) |
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latch.countDown(); |
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else |
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assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
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phaser.arrive(); |
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}})); |
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if (goesFirst) |
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assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS)); |
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else |
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latch.countDown(); |
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phase = phaser.awaitAdvance(phaser.arrive()); |
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threadAssertEquals(phase, phaser.getPhase()); |
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assertEquals(phase, phaser.getPhase()); |
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} |
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for (Thread thread : threads) |
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thread.join(); |
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awaitTermination(thread, SMALL_DELAY_MS); |
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} |
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|
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/** |
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*/ |
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public void testAwaitAdvance6() throws InterruptedException { |
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final Phaser phaser = new Phaser(3); |
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< |
/* |
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* Start new thread. This thread waits a small amount of time |
408 |
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* and waits for the other two parties to arrive. The party |
409 |
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* in the main thread arrives quickly so at best this thread |
410 |
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* waits for the second thread's party to arrive |
411 |
< |
*/ |
412 |
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Thread t1 = newStartedThread(new CheckedRunnable() { |
413 |
< |
void realRun() { |
414 |
< |
sleepTillInterrupted(SMALL_DELAY_MS); |
415 |
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int phase = phaser.awaitAdvance(phaser.arrive()); |
416 |
< |
/* |
417 |
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* This point is reached when force termination is called in which phase = -1 |
418 |
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*/ |
419 |
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threadAssertTrue(phase < 0); |
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threadAssertTrue(phaser.isTerminated()); |
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}}); |
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/* |
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* This thread will cause the first thread run to wait, in doing so |
419 |
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* the main thread will force termination in which the first thread |
420 |
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* should exit peacefully as this one |
421 |
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*/ |
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Thread t2 = newStartedThread(new CheckedRunnable() { |
423 |
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void realRun() { |
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sleepTillInterrupted(MEDIUM_DELAY_MS); |
425 |
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int p1 = phaser.arrive(); |
426 |
< |
int phase = phaser.awaitAdvance(p1); |
427 |
< |
threadAssertTrue(phase < 0); |
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threadAssertTrue(phaser.isTerminated()); |
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< |
}}); |
430 |
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|
431 |
< |
phaser.arrive(); |
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> |
final CountDownLatch threadsStarted = new CountDownLatch(2); |
407 |
> |
final List<Thread> threads = new ArrayList<Thread>(); |
408 |
> |
for (int i = 0; i < 2; i++) { |
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Runnable r = new CheckedRunnable() { |
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> |
public void realRun() { |
411 |
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int p1 = phaser.arrive(); |
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assertTrue(p1 >= 0); |
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threadsStarted.countDown(); |
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> |
int phase = phaser.awaitAdvance(p1); |
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assertTrue(phase < 0); |
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assertTrue(phaser.isTerminated()); |
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}}; |
418 |
> |
threads.add(newStartedThread(r)); |
419 |
> |
} |
420 |
> |
threadsStarted.await(); |
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phaser.forceTermination(); |
422 |
< |
t1.join(); |
423 |
< |
t2.join(); |
422 |
> |
for (Thread thread : threads) |
423 |
> |
awaitTermination(thread, SMALL_DELAY_MS); |
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} |
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|
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/** |
432 |
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Phaser phaser = new Phaser(); |
433 |
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phaser.arriveAndAwaitAdvance(); |
434 |
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shouldThrow(); |
435 |
< |
} catch (IllegalStateException success) { |
447 |
< |
} |
435 |
> |
} catch (IllegalStateException success) {} |
436 |
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} |
437 |
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|
438 |
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/** |
440 |
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*/ |
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public void testArriveAndAwaitAdvance2() throws InterruptedException { |
442 |
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final Phaser phaser = new Phaser(2); |
443 |
< |
Thread th = newStartedThread(new CheckedRunnable() { |
444 |
< |
void realRun() { |
443 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
444 |
> |
final AtomicBoolean advanced = new AtomicBoolean(false); |
445 |
> |
final AtomicBoolean checkedInterruptStatus = new AtomicBoolean(false); |
446 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
447 |
> |
public void realRun() throws InterruptedException { |
448 |
> |
threadStarted.countDown(); |
449 |
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phaser.arriveAndAwaitAdvance(); |
450 |
+ |
advanced.set(true); |
451 |
+ |
assertTrue(Thread.currentThread().isInterrupted()); |
452 |
+ |
while (!checkedInterruptStatus.get()) |
453 |
+ |
Thread.yield(); |
454 |
|
}}); |
455 |
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|
456 |
< |
Thread.sleep(SMALL_DELAY_MS); |
457 |
< |
th.interrupt(); |
462 |
< |
Thread.sleep(SMALL_DELAY_MS); |
456 |
> |
assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS)); |
457 |
> |
t.interrupt(); |
458 |
|
phaser.arrive(); |
459 |
< |
assertFalse(th.isInterrupted()); |
460 |
< |
th.join(); |
459 |
> |
while (!advanced.get()) |
460 |
> |
Thread.yield(); |
461 |
> |
assertTrue(t.isInterrupted()); |
462 |
> |
checkedInterruptStatus.set(true); |
463 |
> |
awaitTermination(t, SMALL_DELAY_MS); |
464 |
|
} |
465 |
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|
466 |
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/** |
470 |
|
*/ |
471 |
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public void testArriveAndAwaitAdvance3() throws InterruptedException { |
472 |
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final Phaser phaser = new Phaser(1); |
475 |
– |
final AtomicInteger arrivingCount = new AtomicInteger(0); |
473 |
|
final List<Thread> threads = new ArrayList<Thread>(); |
474 |
< |
for (int i = 0; i < 6; i++) { |
474 |
> |
for (int i = 0; i < 3; i++) { |
475 |
|
threads.add(newStartedThread(new CheckedRunnable() { |
476 |
< |
void realRun() throws InterruptedException { |
477 |
< |
phaser.register(); |
478 |
< |
sleepTillInterrupted(SHORT_DELAY_MS); |
479 |
< |
arrivingCount.getAndIncrement(); |
483 |
< |
phaser.arrive(); |
484 |
< |
}})); |
476 |
> |
public void realRun() throws InterruptedException { |
477 |
> |
phaser.register(); |
478 |
> |
phaser.arriveAndAwaitAdvance(); |
479 |
> |
}})); |
480 |
|
} |
481 |
< |
int phaseNumber = phaser.arriveAndAwaitAdvance(); |
482 |
< |
arrivingCount.incrementAndGet(); |
483 |
< |
//the + 1 adds to expectedArrive to account for the main threads arrival |
489 |
< |
int expectedArrived = phaseNumber > 0 ? phaseNumber * six + 1 : phaser.getArrivedParties() + 1; |
490 |
< |
threadAssertEquals(expectedArrived, arrivingCount.get()); |
481 |
> |
Thread.sleep(MEDIUM_DELAY_MS); |
482 |
> |
assertEquals(phaser.getArrivedParties(), 3); |
483 |
> |
phaser.arriveAndAwaitAdvance(); |
484 |
|
for (Thread thread : threads) |
485 |
|
thread.join(); |
486 |
|
} |