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Comparing jsr166/src/test/tck/PhaserTest.java (file contents):
Revision 1.19 by jsr166, Fri Oct 15 22:43:02 2010 UTC vs.
Revision 1.44 by jsr166, Wed Jan 4 06:09:58 2017 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include John Vint
6		*/
7
8	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
9	+
10		import java.util.ArrayList;
11		import java.util.List;
12	+	import java.util.concurrent.CountDownLatch;
13	+	import java.util.concurrent.Phaser;
14	+	import java.util.concurrent.TimeoutException;
15		import java.util.concurrent.atomic.AtomicInteger;
16	<	import java.util.concurrent.atomic.AtomicBoolean;
12	<	import java.util.concurrent.*;
13	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
14	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
16	>
17		import junit.framework.Test;
18		import junit.framework.TestSuite;
19
20		public class PhaserTest extends JSR166TestCase {
21
22		public static void main(String[] args) {
23	<	junit.textui.TestRunner.run(suite());
23	>	main(suite(), args);
24		}
25
26		public static Test suite() {
27		return new TestSuite(PhaserTest.class);
28		}
29
30	<	/** Checks state of phaser. */
30	>	private static final int maxParties = 65535;
31	>
32	>	/** Checks state of unterminated phaser. */
33		protected void assertState(Phaser phaser,
34		int phase, int parties, int unarrived) {
35		assertEquals(phase, phaser.getPhase());
36		assertEquals(parties, phaser.getRegisteredParties());
37		assertEquals(unarrived, phaser.getUnarrivedParties());
38		assertEquals(parties - unarrived, phaser.getArrivedParties());
39	<	assertTrue((phaser.getPhase() >= 0) ^ phaser.isTerminated());
39	>	assertFalse(phaser.isTerminated());
40		}
41
42		/** Checks state of terminated phaser. */
43	<	protected void assertTerminated(Phaser phaser, int parties, int unarrived) {
43	>	protected void assertTerminated(Phaser phaser, int maxPhase, int parties) {
44		assertTrue(phaser.isTerminated());
45	<	assertTrue(phaser.getPhase() < 0);
45	>	int expectedPhase = maxPhase + Integer.MIN_VALUE;
46	>	assertEquals(expectedPhase, phaser.getPhase());
47		assertEquals(parties, phaser.getRegisteredParties());
48	<	assertEquals(unarrived, phaser.getUnarrivedParties());
49	<	assertEquals(parties - unarrived, phaser.getArrivedParties());
48	>	assertEquals(expectedPhase, phaser.register());
49	>	assertEquals(expectedPhase, phaser.arrive());
50	>	assertEquals(expectedPhase, phaser.arriveAndDeregister());
51		}
52
53	<	protected void assertTerminated(Phaser phaser) {
54	<	assertTerminated(phaser, 0, 0);
53	>	protected void assertTerminated(Phaser phaser, int maxPhase) {
54	>	assertTerminated(phaser, maxPhase, 0);
55		}
56
57		/**
58		* Empty constructor builds a new Phaser with no parent, no registered
59		* parties and initial phase number of 0
60		*/
61	<	public void testConstructor1() {
61	>	public void testConstructorDefaultValues() {
62		Phaser phaser = new Phaser();
63		assertNull(phaser.getParent());
64	+	assertEquals(0, phaser.getRegisteredParties());
65		assertEquals(0, phaser.getArrivedParties());
66	+	assertEquals(0, phaser.getUnarrivedParties());
67		assertEquals(0, phaser.getPhase());
68		}
69
70		/**
71	<	* A negative party number for the constructor throws illegal argument
72	<	* exception
71	>	* Constructing with a negative number of parties throws
72	>	* IllegalArgumentException
73		*/
74	<	public void testConstructor2() {
74	>	public void testConstructorNegativeParties() {
75		try {
76		new Phaser(-1);
77		shouldThrow();
#	Line 71 | Line 79 | public class PhaserTest extends JSR166Te
79		}
80
81		/**
82	<	* The parent being input into the constructor should equal the original
83	<	* parent when being returned
82	>	* Constructing with a negative number of parties throws
83	>	* IllegalArgumentException
84		*/
85	<	public void testConstructor3() {
86	<	Phaser parent = new Phaser();
87	<	assertEquals(parent, new Phaser(parent).getParent());
85	>	public void testConstructorNegativeParties2() {
86	>	try {
87	>	new Phaser(new Phaser(), -1);
88	>	shouldThrow();
89	>	} catch (IllegalArgumentException success) {}
90		}
91
92		/**
93	<	* A negative party number for the constructor throws illegal argument
94	<	* exception
93	>	* Constructing with a number of parties > 65535 throws
94	>	* IllegalArgumentException
95		*/
96	<	public void testConstructor4() {
96	>	public void testConstructorPartiesExceedsLimit() {
97	>	new Phaser(maxParties);
98		try {
99	<	new Phaser(new Phaser(), -1);
99	>	new Phaser(maxParties + 1);
100		shouldThrow();
101		} catch (IllegalArgumentException success) {}
102	+
103	+	new Phaser(new Phaser(), maxParties);
104	+	try {
105	+	new Phaser(new Phaser(), maxParties + 1);
106	+	shouldThrow();
107	+	} catch (IllegalArgumentException success) {}
108	+	}
109	+
110	+	/**
111	+	* The parent provided to the constructor should be returned from
112	+	* a later call to getParent
113	+	*/
114	+	public void testConstructor3() {
115	+	Phaser parent = new Phaser();
116	+	assertSame(parent, new Phaser(parent).getParent());
117	+	assertNull(new Phaser(null).getParent());
118		}
119
120		/**
#	Line 96 | Line 123 | public class PhaserTest extends JSR166Te
123		*/
124		public void testConstructor5() {
125		Phaser parent = new Phaser();
126	<	assertEquals(parent, new Phaser(parent, 0).getParent());
126	>	assertSame(parent, new Phaser(parent, 0).getParent());
127	>	assertNull(new Phaser(null, 0).getParent());
128		}
129
130		/**
131	<	* register() will increment the number of unarrived parties by one and not
132	<	* affect its arrived parties
131	>	* register() will increment the number of unarrived parties by
132	>	* one and not affect its arrived parties
133		*/
134		public void testRegister1() {
135		Phaser phaser = new Phaser();
#	Line 115 | Line 143 | public class PhaserTest extends JSR166Te
143		*/
144		public void testRegister2() {
145		Phaser phaser = new Phaser(0);
118	–	int maxParties = (1 << 16) - 1;
146		assertState(phaser, 0, 0, 0);
147		assertEquals(0, phaser.bulkRegister(maxParties - 10));
148		assertState(phaser, 0, maxParties - 10, maxParties - 10);
#	Line 128 | Line 155 | public class PhaserTest extends JSR166Te
155		phaser.register();
156		shouldThrow();
157		} catch (IllegalStateException success) {}
158	+
159	+	try {
160	+	phaser.bulkRegister(Integer.MAX_VALUE);
161	+	shouldThrow();
162	+	} catch (IllegalStateException success) {}
163	+
164	+	assertEquals(0, phaser.bulkRegister(0));
165	+	assertState(phaser, 0, maxParties, maxParties);
166		}
167
168		/**
169	<	* register() correctly returns the current barrier phase number when
170	<	* invoked
169	>	* register() correctly returns the current barrier phase number
170	>	* when invoked
171		*/
172		public void testRegister3() {
173		Phaser phaser = new Phaser();
#	Line 143 | Line 178 | public class PhaserTest extends JSR166Te
178		}
179
180		/**
181	<	* register causes the next arrive to not increment the phase rather retain
182	<	* the phase number
181	>	* register causes the next arrive to not increment the phase
182	>	* rather retain the phase number
183		*/
184		public void testRegister4() {
185		Phaser phaser = new Phaser(1);
#	Line 155 | Line 190 | public class PhaserTest extends JSR166Te
190		}
191
192		/**
193	+	* register on a subphaser that is currently empty succeeds, even
194	+	* in the presence of another non-empty subphaser
195	+	*/
196	+	public void testRegisterEmptySubPhaser() {
197	+	Phaser root = new Phaser();
198	+	Phaser child1 = new Phaser(root, 1);
199	+	Phaser child2 = new Phaser(root, 0);
200	+	assertEquals(0, child2.register());
201	+	assertState(root, 0, 2, 2);
202	+	assertState(child1, 0, 1, 1);
203	+	assertState(child2, 0, 1, 1);
204	+	assertEquals(0, child2.arriveAndDeregister());
205	+	assertState(root, 0, 1, 1);
206	+	assertState(child1, 0, 1, 1);
207	+	assertState(child2, 0, 0, 0);
208	+	assertEquals(0, child2.register());
209	+	assertEquals(0, child2.arriveAndDeregister());
210	+	assertState(root, 0, 1, 1);
211	+	assertState(child1, 0, 1, 1);
212	+	assertState(child2, 0, 0, 0);
213	+	assertEquals(0, child1.arriveAndDeregister());
214	+	assertTerminated(root, 1);
215	+	assertTerminated(child1, 1);
216	+	assertTerminated(child2, 1);
217	+	}
218	+
219	+	/**
220		* Invoking bulkRegister with a negative parameter throws an
221		* IllegalArgumentException
222		*/
#	Line 166 | Line 228 | public class PhaserTest extends JSR166Te
228		}
229
230		/**
231	<	* bulkRegister should correctly record the number of unarrived parties with
232	<	* the number of parties being registered
231	>	* bulkRegister should correctly record the number of unarrived
232	>	* parties with the number of parties being registered
233		*/
234		public void testBulkRegister2() {
235		Phaser phaser = new Phaser();
236	+	assertEquals(0, phaser.bulkRegister(0));
237	+	assertState(phaser, 0, 0, 0);
238		assertEquals(0, phaser.bulkRegister(20));
239		assertState(phaser, 0, 20, 20);
240		}
#	Line 219 | Line 283 | public class PhaserTest extends JSR166Te
283		/**
284		* arriveAndDeregister does not wait for others to arrive at barrier
285		*/
286	<	public void testArriveAndDeregister() throws InterruptedException {
286	>	public void testArriveAndDeregister() {
287		final Phaser phaser = new Phaser(1);
288		for (int i = 0; i < 10; i++) {
289		assertState(phaser, 0, 1, 1);
#	Line 229 | Line 293 | public class PhaserTest extends JSR166Te
293		assertState(phaser, 0, 1, 1);
294		}
295		assertEquals(0, phaser.arriveAndDeregister());
296	<	assertTerminated(phaser);
296	>	assertTerminated(phaser, 1);
297		}
298
299		/**
300		* arriveAndDeregister does not wait for others to arrive at barrier
301		*/
302	<	public void testArrive2() throws InterruptedException {
302	>	public void testArrive2() {
303		final Phaser phaser = new Phaser();
304		assertEquals(0, phaser.register());
305	<	List<Thread> threads = new ArrayList<Thread>();
305	>	List<Thread> threads = new ArrayList<>();
306		for (int i = 0; i < 10; i++) {
307		assertEquals(0, phaser.register());
308		threads.add(newStartedThread(new CheckedRunnable() {
309	<	public void realRun() throws InterruptedException {
309	>	public void realRun() {
310		assertEquals(0, phaser.arriveAndDeregister());
311		}}));
312		}
313
314		for (Thread thread : threads)
315	<	awaitTermination(thread, LONG_DELAY_MS);
315	>	awaitTermination(thread);
316		assertState(phaser, 0, 1, 1);
317		assertEquals(0, phaser.arrive());
318		assertState(phaser, 1, 1, 1);
#	Line 260 | Line 324 | public class PhaserTest extends JSR166Te
324		public void testArrive3() {
325		Phaser phaser = new Phaser(1);
326		phaser.forceTermination();
327	<	assertTerminated(phaser, 1, 1);
327	>	assertTerminated(phaser, 0, 1);
328	>	assertEquals(0, phaser.getPhase() + Integer.MIN_VALUE);
329		assertTrue(phaser.arrive() < 0);
330		assertTrue(phaser.register() < 0);
331		assertTrue(phaser.arriveAndDeregister() < 0);
#	Line 273 | Line 338 | public class PhaserTest extends JSR166Te
338		* registered or unarrived parties would become negative
339		*/
340		public void testArriveAndDeregister1() {
341	+	Phaser phaser = new Phaser();
342		try {
277	–	Phaser phaser = new Phaser();
343		phaser.arriveAndDeregister();
344		shouldThrow();
345		} catch (IllegalStateException success) {}
#	Line 301 | Line 366 | public class PhaserTest extends JSR166Te
366		Phaser parent = new Phaser();
367		Phaser child = new Phaser(parent);
368		assertState(child, 0, 0, 0);
369	<	assertState(parent, 0, 1, 1);
369	>	assertState(parent, 0, 0, 0);
370		assertEquals(0, child.register());
371		assertState(child, 0, 1, 1);
372		assertState(parent, 0, 1, 1);
373		assertEquals(0, child.arriveAndDeregister());
374	<	assertTerminated(child);
375	<	assertTerminated(parent);
374	>	assertTerminated(child, 1);
375	>	assertTerminated(parent, 1);
376		}
377
378		/**
#	Line 334 | Line 399 | public class PhaserTest extends JSR166Te
399		Phaser root = new Phaser();
400		Phaser parent = new Phaser(root);
401		Phaser child = new Phaser(parent);
402	<	assertState(root, 0, 1, 1);
403	<	assertState(parent, 0, 1, 1);
402	>	assertState(root, 0, 0, 0);
403	>	assertState(parent, 0, 0, 0);
404		assertState(child, 0, 0, 0);
405		assertEquals(0, child.register());
406		assertState(root, 0, 1, 1);
407		assertState(parent, 0, 1, 1);
408		assertState(child, 0, 1, 1);
409		assertEquals(0, child.arriveAndDeregister());
410	<	assertTerminated(child);
411	<	assertTerminated(parent);
412	<	assertTerminated(root);
410	>	assertTerminated(child, 1);
411	>	assertTerminated(parent, 1);
412	>	assertTerminated(root, 1);
413		}
414
415		/**
416		* arriveAndDeregister returns the phase in which it leaves the
417		* phaser in after deregistration
418		*/
419	<	public void testArriveAndDeregister6() throws InterruptedException {
419	>	public void testArriveAndDeregister6() {
420		final Phaser phaser = new Phaser(2);
421		Thread t = newStartedThread(new CheckedRunnable() {
422		public void realRun() {
#	Line 362 | Line 427 | public class PhaserTest extends JSR166Te
427		assertEquals(1, phaser.arriveAndDeregister());
428		assertState(phaser, 1, 1, 1);
429		assertEquals(1, phaser.arriveAndDeregister());
430	<	assertTerminated(phaser);
431	<	awaitTermination(t, SHORT_DELAY_MS);
430	>	assertTerminated(phaser, 2);
431	>	awaitTermination(t);
432		}
433
434		/**
#	Line 386 | Line 451 | public class PhaserTest extends JSR166Te
451		}
452
453		/**
454	<	* awaitAdvance continues waiting if interrupted
454	>	* awaitAdvanceInterruptibly blocks interruptibly
455	>	*/
456	>	public void testAwaitAdvanceInterruptibly_interruptible() throws InterruptedException {
457	>	final Phaser phaser = new Phaser(1);
458	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(2);
459	>
460	>	Thread t1 = newStartedThread(new CheckedRunnable() {
461	>	public void realRun() {
462	>	Thread.currentThread().interrupt();
463	>	try {
464	>	phaser.awaitAdvanceInterruptibly(0);
465	>	shouldThrow();
466	>	} catch (InterruptedException success) {}
467	>	assertFalse(Thread.interrupted());
468	>
469	>	pleaseInterrupt.countDown();
470	>	try {
471	>	phaser.awaitAdvanceInterruptibly(0);
472	>	shouldThrow();
473	>	} catch (InterruptedException success) {}
474	>	assertFalse(Thread.interrupted());
475	>	}});
476	>
477	>	Thread t2 = newStartedThread(new CheckedRunnable() {
478	>	public void realRun() throws TimeoutException {
479	>	Thread.currentThread().interrupt();
480	>	try {
481	>	phaser.awaitAdvanceInterruptibly(0, 2*LONG_DELAY_MS, MILLISECONDS);
482	>	shouldThrow();
483	>	} catch (InterruptedException success) {}
484	>	assertFalse(Thread.interrupted());
485	>
486	>	pleaseInterrupt.countDown();
487	>	try {
488	>	phaser.awaitAdvanceInterruptibly(0, 2*LONG_DELAY_MS, MILLISECONDS);
489	>	shouldThrow();
490	>	} catch (InterruptedException success) {}
491	>	assertFalse(Thread.interrupted());
492	>	}});
493	>
494	>	await(pleaseInterrupt);
495	>	assertState(phaser, 0, 1, 1);
496	>	assertThreadsStayAlive(t1, t2);
497	>	t1.interrupt();
498	>	t2.interrupt();
499	>	awaitTermination(t1);
500	>	awaitTermination(t2);
501	>	assertState(phaser, 0, 1, 1);
502	>	assertEquals(0, phaser.arrive());
503	>	assertState(phaser, 1, 1, 1);
504	>	}
505	>
506	>	/**
507	>	* awaitAdvance continues waiting if interrupted before waiting
508		*/
509	<	public void testAwaitAdvance3() throws InterruptedException {
509	>	public void testAwaitAdvanceAfterInterrupt() {
510		final Phaser phaser = new Phaser();
511		assertEquals(0, phaser.register());
512	<	final CountDownLatch threadStarted = new CountDownLatch(1);
512	>	final CountDownLatch pleaseArrive = new CountDownLatch(1);
513
514		Thread t = newStartedThread(new CheckedRunnable() {
515	<	public void realRun() throws InterruptedException {
515	>	public void realRun() {
516	>	Thread.currentThread().interrupt();
517		assertEquals(0, phaser.register());
518	<	threadStarted.countDown();
519	<	assertEquals(1, phaser.awaitAdvance(phaser.arrive()));
518	>	assertEquals(0, phaser.arrive());
519	>	pleaseArrive.countDown();
520		assertTrue(Thread.currentThread().isInterrupted());
521	+	assertEquals(1, phaser.awaitAdvance(0));
522	+	assertTrue(Thread.interrupted());
523	+	}});
524	+
525	+	await(pleaseArrive);
526	+	waitForThreadToEnterWaitState(t, SHORT_DELAY_MS);
527	+	assertEquals(0, phaser.arrive());
528	+	awaitTermination(t);
529	+
530	+	Thread.currentThread().interrupt();
531	+	assertEquals(1, phaser.awaitAdvance(0));
532	+	assertTrue(Thread.interrupted());
533	+	}
534	+
535	+	/**
536	+	*  awaitAdvance continues waiting if interrupted while waiting
537	+	*/
538	+	public void testAwaitAdvanceBeforeInterrupt() {
539	+	final Phaser phaser = new Phaser();
540	+	assertEquals(0, phaser.register());
541	+	final CountDownLatch pleaseArrive = new CountDownLatch(1);
542	+
543	+	Thread t = newStartedThread(new CheckedRunnable() {
544	+	public void realRun() {
545	+	assertEquals(0, phaser.register());
546	+	assertEquals(0, phaser.arrive());
547	+	assertFalse(Thread.currentThread().isInterrupted());
548	+	pleaseArrive.countDown();
549	+	assertEquals(1, phaser.awaitAdvance(0));
550	+	assertTrue(Thread.interrupted());
551		}});
552	<	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
552	>
553	>	await(pleaseArrive);
554	>	waitForThreadToEnterWaitState(t, SHORT_DELAY_MS);
555		t.interrupt();
556		assertEquals(0, phaser.arrive());
557	<	awaitTermination(t, SMALL_DELAY_MS);
557	>	awaitTermination(t);
558	>
559	>	Thread.currentThread().interrupt();
560	>	assertEquals(1, phaser.awaitAdvance(0));
561	>	assertTrue(Thread.interrupted());
562	>	}
563	>
564	>	/**
565	>	* arriveAndAwaitAdvance continues waiting if interrupted before waiting
566	>	*/
567	>	public void testArriveAndAwaitAdvanceAfterInterrupt() {
568	>	final Phaser phaser = new Phaser();
569	>	assertEquals(0, phaser.register());
570	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
571	>
572	>	Thread t = newStartedThread(new CheckedRunnable() {
573	>	public void realRun() {
574	>	Thread.currentThread().interrupt();
575	>	assertEquals(0, phaser.register());
576	>	pleaseInterrupt.countDown();
577	>	assertTrue(Thread.currentThread().isInterrupted());
578	>	assertEquals(1, phaser.arriveAndAwaitAdvance());
579	>	assertTrue(Thread.currentThread().isInterrupted());
580	>	}});
581	>
582	>	await(pleaseInterrupt);
583	>	waitForThreadToEnterWaitState(t, SHORT_DELAY_MS);
584	>	Thread.currentThread().interrupt();
585	>	assertEquals(1, phaser.arriveAndAwaitAdvance());
586	>	assertTrue(Thread.interrupted());
587	>	awaitTermination(t);
588	>	}
589	>
590	>	/**
591	>	* arriveAndAwaitAdvance continues waiting if interrupted while waiting
592	>	*/
593	>	public void testArriveAndAwaitAdvanceBeforeInterrupt() {
594	>	final Phaser phaser = new Phaser();
595	>	assertEquals(0, phaser.register());
596	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
597	>
598	>	Thread t = newStartedThread(new CheckedRunnable() {
599	>	public void realRun() {
600	>	assertEquals(0, phaser.register());
601	>	assertFalse(Thread.currentThread().isInterrupted());
602	>	pleaseInterrupt.countDown();
603	>	assertEquals(1, phaser.arriveAndAwaitAdvance());
604	>	assertTrue(Thread.currentThread().isInterrupted());
605	>	}});
606	>
607	>	await(pleaseInterrupt);
608	>	waitForThreadToEnterWaitState(t, SHORT_DELAY_MS);
609	>	t.interrupt();
610	>	Thread.currentThread().interrupt();
611	>	assertEquals(1, phaser.arriveAndAwaitAdvance());
612	>	assertTrue(Thread.interrupted());
613	>	awaitTermination(t);
614		}
615
616		/**
617		* awaitAdvance atomically waits for all parties within the same phase to
618		* complete before continuing
619		*/
620	<	public void testAwaitAdvance4() throws InterruptedException {
620	>	public void testAwaitAdvance4() {
621		final Phaser phaser = new Phaser(4);
622		final AtomicInteger count = new AtomicInteger(0);
623	<	List<Thread> threads = new ArrayList<Thread>();
623	>	List<Thread> threads = new ArrayList<>();
624		for (int i = 0; i < 4; i++)
625		threads.add(newStartedThread(new CheckedRunnable() {
626		public void realRun() {
627		for (int k = 0; k < 3; k++) {
628	<	assertEquals(2*k+1, phaser.arriveAndAwaitAdvance());
628	>	assertEquals(2 * k + 1, phaser.arriveAndAwaitAdvance());
629		count.incrementAndGet();
630	<	assertEquals(2*k+1, phaser.arrive());
631	<	assertEquals(2*k+2, phaser.awaitAdvance(2*k+1));
632	<	assertEquals(count.get(), 4*(k+1));
630	>	assertEquals(2 * k + 1, phaser.arrive());
631	>	assertEquals(2 * k + 2, phaser.awaitAdvance(2 * k + 1));
632	>	assertEquals(4 * (k + 1), count.get());
633		}}}));
634
635		for (Thread thread : threads)
636	<	awaitTermination(thread, MEDIUM_DELAY_MS);
636	>	awaitTermination(thread);
637		}
638
639		/**
640		* awaitAdvance returns the current phase
641		*/
642	<	public void testAwaitAdvance5() throws InterruptedException {
642	>	public void testAwaitAdvance5() {
643		final Phaser phaser = new Phaser(1);
644		assertEquals(1, phaser.awaitAdvance(phaser.arrive()));
645		assertEquals(1, phaser.getPhase());
646		assertEquals(1, phaser.register());
647	<	List<Thread> threads = new ArrayList<Thread>();
647	>	List<Thread> threads = new ArrayList<>();
648		for (int i = 0; i < 8; i++) {
649		final CountDownLatch latch = new CountDownLatch(1);
650		final boolean goesFirst = ((i & 1) == 0);
651		threads.add(newStartedThread(new CheckedRunnable() {
652	<	public void realRun() throws InterruptedException {
652	>	public void realRun() {
653		if (goesFirst)
654		latch.countDown();
655		else
656	<	assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS));
656	>	await(latch);
657		phaser.arrive();
658		}}));
659		if (goesFirst)
660	<	assertTrue(latch.await(SMALL_DELAY_MS, MILLISECONDS));
660	>	await(latch);
661		else
662		latch.countDown();
663		assertEquals(i + 2, phaser.awaitAdvance(phaser.arrive()));
664		assertEquals(i + 2, phaser.getPhase());
665		}
666		for (Thread thread : threads)
667	<	awaitTermination(thread, SMALL_DELAY_MS);
667	>	awaitTermination(thread);
668	>	}
669	>
670	>	/**
671	>	* awaitAdvance returns the current phase in child phasers
672	>	*/
673	>	public void testAwaitAdvanceTieredPhaser() throws Exception {
674	>	final Phaser parent = new Phaser();
675	>	final List<Phaser> zeroPartyChildren = new ArrayList<>(3);
676	>	final List<Phaser> onePartyChildren = new ArrayList<>(3);
677	>	for (int i = 0; i < 3; i++) {
678	>	zeroPartyChildren.add(new Phaser(parent, 0));
679	>	onePartyChildren.add(new Phaser(parent, 1));
680	>	}
681	>	final List<Phaser> phasers = new ArrayList<>();
682	>	phasers.addAll(zeroPartyChildren);
683	>	phasers.addAll(onePartyChildren);
684	>	phasers.add(parent);
685	>	for (Phaser phaser : phasers) {
686	>	assertEquals(-42, phaser.awaitAdvance(-42));
687	>	assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42));
688	>	assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42, MEDIUM_DELAY_MS, MILLISECONDS));
689	>	}
690	>
691	>	for (Phaser child : onePartyChildren)
692	>	assertEquals(0, child.arrive());
693	>	for (Phaser phaser : phasers) {
694	>	assertEquals(-42, phaser.awaitAdvance(-42));
695	>	assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42));
696	>	assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42, MEDIUM_DELAY_MS, MILLISECONDS));
697	>	assertEquals(1, phaser.awaitAdvance(0));
698	>	assertEquals(1, phaser.awaitAdvanceInterruptibly(0));
699	>	assertEquals(1, phaser.awaitAdvanceInterruptibly(0, MEDIUM_DELAY_MS, MILLISECONDS));
700	>	}
701	>
702	>	for (Phaser child : onePartyChildren)
703	>	assertEquals(1, child.arrive());
704	>	for (Phaser phaser : phasers) {
705	>	assertEquals(-42, phaser.awaitAdvance(-42));
706	>	assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42));
707	>	assertEquals(-42, phaser.awaitAdvanceInterruptibly(-42, MEDIUM_DELAY_MS, MILLISECONDS));
708	>	assertEquals(2, phaser.awaitAdvance(0));
709	>	assertEquals(2, phaser.awaitAdvanceInterruptibly(0));
710	>	assertEquals(2, phaser.awaitAdvanceInterruptibly(0, MEDIUM_DELAY_MS, MILLISECONDS));
711	>	assertEquals(2, phaser.awaitAdvance(1));
712	>	assertEquals(2, phaser.awaitAdvanceInterruptibly(1));
713	>	assertEquals(2, phaser.awaitAdvanceInterruptibly(1, MEDIUM_DELAY_MS, MILLISECONDS));
714	>	}
715		}
716
717		/**
718		* awaitAdvance returns when the phaser is externally terminated
719		*/
720	<	public void testAwaitAdvance6() throws InterruptedException {
720	>	public void testAwaitAdvance6() {
721		final Phaser phaser = new Phaser(3);
722	<	final CountDownLatch threadsStarted = new CountDownLatch(2);
723	<	final List<Thread> threads = new ArrayList<Thread>();
722	>	final CountDownLatch pleaseForceTermination = new CountDownLatch(2);
723	>	final List<Thread> threads = new ArrayList<>();
724		for (int i = 0; i < 2; i++) {
725		Runnable r = new CheckedRunnable() {
726		public void realRun() {
727		assertEquals(0, phaser.arrive());
728	<	threadsStarted.countDown();
728	>	pleaseForceTermination.countDown();
729		assertTrue(phaser.awaitAdvance(0) < 0);
730		assertTrue(phaser.isTerminated());
731		assertTrue(phaser.getPhase() < 0);
732	+	assertEquals(0, phaser.getPhase() + Integer.MIN_VALUE);
733		assertEquals(3, phaser.getRegisteredParties());
734		}};
735		threads.add(newStartedThread(r));
736		}
737	<	threadsStarted.await();
737	>	await(pleaseForceTermination);
738		phaser.forceTermination();
484	–	for (Thread thread : threads)
485	–	awaitTermination(thread, SMALL_DELAY_MS);
739		assertTrue(phaser.isTerminated());
740	<	assertTrue(phaser.getPhase() < 0);
740	>	assertEquals(0, phaser.getPhase() + Integer.MIN_VALUE);
741	>	for (Thread thread : threads)
742	>	awaitTermination(thread);
743		assertEquals(3, phaser.getRegisteredParties());
744		}
745
#	Line 493 | Line 748 | public class PhaserTest extends JSR166Te
748		* unarrived parties
749		*/
750		public void testArriveAndAwaitAdvance1() {
751	+	Phaser phaser = new Phaser();
752		try {
497	–	Phaser phaser = new Phaser();
753		phaser.arriveAndAwaitAdvance();
754		shouldThrow();
755		} catch (IllegalStateException success) {}
756		}
757
758		/**
504	–	* Interrupted arriveAndAwaitAdvance does not throw InterruptedException
505	–	*/
506	–	public void testArriveAndAwaitAdvance2() throws InterruptedException {
507	–	final Phaser phaser = new Phaser(2);
508	–	final CountDownLatch threadStarted = new CountDownLatch(1);
509	–	final AtomicBoolean advanced = new AtomicBoolean(false);
510	–	final AtomicBoolean checkedInterruptStatus = new AtomicBoolean(false);
511	–	Thread t = newStartedThread(new CheckedRunnable() {
512	–	public void realRun() throws InterruptedException {
513	–	threadStarted.countDown();
514	–	assertEquals(1, phaser.arriveAndAwaitAdvance());
515	–	assertState(phaser, 1, 2, 2);
516	–	advanced.set(true);
517	–	assertTrue(Thread.currentThread().isInterrupted());
518	–	while (!checkedInterruptStatus.get())
519	–	Thread.yield();
520	–	}});
521	–
522	–	assertTrue(threadStarted.await(SMALL_DELAY_MS, MILLISECONDS));
523	–	t.interrupt();
524	–	assertEquals(0, phaser.arrive());
525	–	while (!advanced.get())
526	–	Thread.yield();
527	–	assertTrue(t.isInterrupted());
528	–	checkedInterruptStatus.set(true);
529	–	awaitTermination(t, SMALL_DELAY_MS);
530	–	}
531	–
532	–	/**
759		* arriveAndAwaitAdvance waits for all threads to arrive, the
760		* number of arrived parties is the same number that is accounted
761		* for when the main thread awaitsAdvance
762		*/
763	<	public void testArriveAndAwaitAdvance3() throws InterruptedException {
763	>	public void testArriveAndAwaitAdvance3() {
764		final Phaser phaser = new Phaser(1);
765		final int THREADS = 3;
766	<	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
767	<	final List<Thread> threads = new ArrayList<Thread>();
766	>	final CountDownLatch pleaseArrive = new CountDownLatch(THREADS);
767	>	final List<Thread> threads = new ArrayList<>();
768		for (int i = 0; i < THREADS; i++)
769		threads.add(newStartedThread(new CheckedRunnable() {
770	<	public void realRun() throws InterruptedException {
770	>	public void realRun() {
771		assertEquals(0, phaser.register());
772	<	threadsStarted.countDown();
772	>	pleaseArrive.countDown();
773		assertEquals(1, phaser.arriveAndAwaitAdvance());
774		}}));
775
776	<	assertTrue(threadsStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
777	<	long t0 = System.nanoTime();
776	>	await(pleaseArrive);
777	>	long startTime = System.nanoTime();
778		while (phaser.getArrivedParties() < THREADS)
779		Thread.yield();
780		assertEquals(THREADS, phaser.getArrivedParties());
781	<	assertTrue(NANOSECONDS.toMillis(System.nanoTime() - t0) < SMALL_DELAY_MS);
781	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
782	>	for (Thread thread : threads)
783	>	waitForThreadToEnterWaitState(thread, SHORT_DELAY_MS);
784		for (Thread thread : threads)
785		assertTrue(thread.isAlive());
786		assertState(phaser, 0, THREADS + 1, 1);
787		phaser.arriveAndAwaitAdvance();
788		for (Thread thread : threads)
789	<	awaitTermination(thread, SMALL_DELAY_MS);
789	>	awaitTermination(thread);
790		assertState(phaser, 1, THREADS + 1, THREADS + 1);
791		}
792

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