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Comparing jsr166/src/test/tck/RecursiveActionTest.java (file contents):
Revision 1.25 by jsr166, Tue Nov 23 06:33:26 2010 UTC vs.
Revision 1.51 by jsr166, Sat Oct 21 06:49:04 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		*/
6
7	<	import junit.framework.*;
7	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
8	>
9	>	import java.util.Arrays;
10	>	import java.util.HashSet;
11		import java.util.concurrent.CancellationException;
12		import java.util.concurrent.ExecutionException;
13		import java.util.concurrent.ForkJoinPool;
14	+	import java.util.concurrent.ForkJoinTask;
15		import java.util.concurrent.ForkJoinWorkerThread;
16		import java.util.concurrent.RecursiveAction;
17	<	import java.util.concurrent.TimeUnit;
17	>	import java.util.concurrent.SynchronousQueue;
18	>	import java.util.concurrent.ThreadLocalRandom;
19		import java.util.concurrent.TimeoutException;
20	<	import static java.util.concurrent.TimeUnit.SECONDS;
21	<	import java.util.HashSet;
20	>
21	>	import junit.framework.Test;
22	>	import junit.framework.TestSuite;
23
24		public class RecursiveActionTest extends JSR166TestCase {
25
26		public static void main(String[] args) {
27	<	junit.textui.TestRunner.run(suite());
27	>	main(suite(), args);
28		}
29
30		public static Test suite() {
#	Line 40 | Line 46 | public class RecursiveActionTest extends
46		}
47
48		private void testInvokeOnPool(ForkJoinPool pool, RecursiveAction a) {
49	<	try {
49	>	try (PoolCleaner cleaner = cleaner(pool)) {
50		checkNotDone(a);
51
52		assertNull(pool.invoke(a));
53
54		checkCompletedNormally(a);
49	–	} finally {
50	–	joinPool(pool);
55		}
56		}
57
#	Line 59 | Line 63 | public class RecursiveActionTest extends
63		assertNull(a.getException());
64		assertNull(a.getRawResult());
65
66	<	if (! (Thread.currentThread() instanceof ForkJoinWorkerThread)) {
66	>	if (! ForkJoinTask.inForkJoinPool()) {
67		Thread.currentThread().interrupt();
68		try {
69		a.get();
#	Line 69 | Line 73 | public class RecursiveActionTest extends
73
74		Thread.currentThread().interrupt();
75		try {
76	<	a.get(5L, SECONDS);
76	>	a.get(randomTimeout(), randomTimeUnit());
77		shouldThrow();
78		} catch (InterruptedException success) {
79		} catch (Throwable fail) { threadUnexpectedException(fail); }
80		}
81
82		try {
83	<	a.get(0L, SECONDS);
83	>	a.get(randomExpiredTimeout(), randomTimeUnit());
84		shouldThrow();
85		} catch (TimeoutException success) {
86		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 94 | Line 98 | public class RecursiveActionTest extends
98		assertFalse(a.cancel(true));
99		try {
100		assertNull(a.get());
101	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
102	<	try {
99	<	assertNull(a.get(5L, SECONDS));
100	<	} catch (Throwable fail) { threadUnexpectedException(fail); }
101	>	assertNull(a.get(randomTimeout(), randomTimeUnit()));
102	>	} catch (Exception fail) { threadUnexpectedException(fail); }
103		}
104
105		void checkCancelled(RecursiveAction a) {
#	Line 121 | Line 123 | public class RecursiveActionTest extends
123		} catch (Throwable fail) { threadUnexpectedException(fail); }
124
125		try {
126	<	a.get(5L, SECONDS);
126	>	a.get(randomTimeout(), randomTimeUnit());
127		shouldThrow();
128		} catch (CancellationException success) {
129		} catch (Throwable fail) { threadUnexpectedException(fail); }
#	Line 132 | Line 134 | public class RecursiveActionTest extends
134		assertFalse(a.isCancelled());
135		assertFalse(a.isCompletedNormally());
136		assertTrue(a.isCompletedAbnormally());
137	<	assertSame(t, a.getException());
137	>	assertSame(t.getClass(), a.getException().getClass());
138		assertNull(a.getRawResult());
139		assertFalse(a.cancel(false));
140		assertFalse(a.cancel(true));
#	Line 141 | Line 143 | public class RecursiveActionTest extends
143		a.join();
144		shouldThrow();
145		} catch (Throwable expected) {
146	<	assertSame(t, expected);
146	>	assertSame(expected.getClass(), t.getClass());
147		}
148
149		try {
150		a.get();
151		shouldThrow();
152		} catch (ExecutionException success) {
153	<	assertSame(t, success.getCause());
153	>	assertSame(t.getClass(), success.getCause().getClass());
154		} catch (Throwable fail) { threadUnexpectedException(fail); }
155
156		try {
157	<	a.get(5L, SECONDS);
157	>	a.get(randomTimeout(), randomTimeUnit());
158		shouldThrow();
159		} catch (ExecutionException success) {
160	<	assertSame(t, success.getCause());
160	>	assertSame(t.getClass(), success.getCause().getClass());
161		} catch (Throwable fail) { threadUnexpectedException(fail); }
162		}
163
164	<	static final class FJException extends RuntimeException {
165	<	FJException() { super(); }
164	>	public static final class FJException extends RuntimeException {
165	>	public FJException() { super(); }
166	>	public FJException(Throwable cause) { super(cause); }
167		}
168
169	<	// A simple recursive action for testing
169	>	/** A simple recursive action for testing. */
170		final class FibAction extends CheckedRecursiveAction {
171		final int number;
172		int result;
173		FibAction(int n) { number = n; }
174	<	public void realCompute() {
174	>	protected void realCompute() {
175		int n = number;
176		if (n <= 1)
177		result = n;
#	Line 181 | Line 184 | public class RecursiveActionTest extends
184		}
185		}
186
187	<	// A recursive action failing in base case
187	>	/** A recursive action failing in base case. */
188		static final class FailingFibAction extends RecursiveAction {
189		final int number;
190		int result;
#	Line 206 | Line 209 | public class RecursiveActionTest extends
209		*/
210		public void testInvoke() {
211		RecursiveAction a = new CheckedRecursiveAction() {
212	<	public void realCompute() {
212	>	protected void realCompute() {
213		FibAction f = new FibAction(8);
214		assertNull(f.invoke());
215		assertEquals(21, f.result);
#	Line 222 | Line 225 | public class RecursiveActionTest extends
225		*/
226		public void testQuietlyInvoke() {
227		RecursiveAction a = new CheckedRecursiveAction() {
228	<	public void realCompute() {
228	>	protected void realCompute() {
229		FibAction f = new FibAction(8);
230		f.quietlyInvoke();
231		assertEquals(21, f.result);
#	Line 236 | Line 239 | public class RecursiveActionTest extends
239		*/
240		public void testForkJoin() {
241		RecursiveAction a = new CheckedRecursiveAction() {
242	<	public void realCompute() {
242	>	protected void realCompute() {
243		FibAction f = new FibAction(8);
244		assertSame(f, f.fork());
245		assertNull(f.join());
#	Line 251 | Line 254 | public class RecursiveActionTest extends
254		*/
255		public void testJoinIgnoresInterrupts() {
256		RecursiveAction a = new CheckedRecursiveAction() {
257	<	public void realCompute() {
257	>	protected void realCompute() {
258		FibAction f = new FibAction(8);
259	+	final Thread currentThread = Thread.currentThread();
260
261		// test join()
262		assertSame(f, f.fork());
263	<	Thread.currentThread().interrupt();
263	>	currentThread.interrupt();
264		assertNull(f.join());
265		Thread.interrupted();
266		assertEquals(21, f.result);
267		checkCompletedNormally(f);
268
269	<	f.reinitialize();
269	>	f = new FibAction(8);
270		f.cancel(true);
271		assertSame(f, f.fork());
272	<	Thread.currentThread().interrupt();
272	>	currentThread.interrupt();
273		try {
274		f.join();
275		shouldThrow();
#	Line 274 | Line 278 | public class RecursiveActionTest extends
278		checkCancelled(f);
279		}
280
281	<	f.reinitialize();
281	>	f = new FibAction(8);
282		f.completeExceptionally(new FJException());
283		assertSame(f, f.fork());
284	<	Thread.currentThread().interrupt();
284	>	currentThread.interrupt();
285		try {
286		f.join();
287		shouldThrow();
#	Line 287 | Line 291 | public class RecursiveActionTest extends
291		}
292
293		// test quietlyJoin()
294	<	f.reinitialize();
294	>	f = new FibAction(8);
295		assertSame(f, f.fork());
296	<	Thread.currentThread().interrupt();
296	>	currentThread.interrupt();
297		f.quietlyJoin();
298		Thread.interrupted();
299		assertEquals(21, f.result);
300		checkCompletedNormally(f);
301
302	<	f.reinitialize();
302	>	f = new FibAction(8);
303		f.cancel(true);
304		assertSame(f, f.fork());
305	<	Thread.currentThread().interrupt();
305	>	currentThread.interrupt();
306		f.quietlyJoin();
307		Thread.interrupted();
308		checkCancelled(f);
309
310	<	f.reinitialize();
310	>	f = new FibAction(8);
311		f.completeExceptionally(new FJException());
312		assertSame(f, f.fork());
313	<	Thread.currentThread().interrupt();
313	>	currentThread.interrupt();
314		f.quietlyJoin();
315		Thread.interrupted();
316		checkCompletedAbnormally(f, f.getException());
#	Line 317 | Line 321 | public class RecursiveActionTest extends
321		}
322
323		/**
324	+	* join/quietlyJoin of a forked task when not in ForkJoinPool
325	+	* succeeds in the presence of interrupts
326	+	*/
327	+	public void testJoinIgnoresInterruptsOutsideForkJoinPool() {
328	+	final SynchronousQueue<FibAction[]> sq =
329	+	new SynchronousQueue<FibAction[]>();
330	+	RecursiveAction a = new CheckedRecursiveAction() {
331	+	protected void realCompute() throws InterruptedException {
332	+	FibAction[] fibActions = new FibAction[6];
333	+	for (int i = 0; i < fibActions.length; i++)
334	+	fibActions[i] = new FibAction(8);
335	+
336	+	fibActions[1].cancel(false);
337	+	fibActions[2].completeExceptionally(new FJException());
338	+	fibActions[4].cancel(true);
339	+	fibActions[5].completeExceptionally(new FJException());
340	+
341	+	for (int i = 0; i < fibActions.length; i++)
342	+	fibActions[i].fork();
343	+
344	+	sq.put(fibActions);
345	+
346	+	helpQuiesce();
347	+	}};
348	+
349	+	Runnable r = new CheckedRunnable() {
350	+	public void realRun() throws InterruptedException {
351	+	FibAction[] fibActions = sq.take();
352	+	FibAction f;
353	+	final Thread currentThread = Thread.currentThread();
354	+
355	+	// test join() ------------
356	+
357	+	f = fibActions[0];
358	+	assertFalse(ForkJoinTask.inForkJoinPool());
359	+	currentThread.interrupt();
360	+	assertNull(f.join());
361	+	assertTrue(Thread.interrupted());
362	+	assertEquals(21, f.result);
363	+	checkCompletedNormally(f);
364	+
365	+	f = fibActions[1];
366	+	currentThread.interrupt();
367	+	try {
368	+	f.join();
369	+	shouldThrow();
370	+	} catch (CancellationException success) {
371	+	assertTrue(Thread.interrupted());
372	+	checkCancelled(f);
373	+	}
374	+
375	+	f = fibActions[2];
376	+	currentThread.interrupt();
377	+	try {
378	+	f.join();
379	+	shouldThrow();
380	+	} catch (FJException success) {
381	+	assertTrue(Thread.interrupted());
382	+	checkCompletedAbnormally(f, success);
383	+	}
384	+
385	+	// test quietlyJoin() ---------
386	+
387	+	f = fibActions[3];
388	+	currentThread.interrupt();
389	+	f.quietlyJoin();
390	+	assertTrue(Thread.interrupted());
391	+	assertEquals(21, f.result);
392	+	checkCompletedNormally(f);
393	+
394	+	f = fibActions[4];
395	+	currentThread.interrupt();
396	+	f.quietlyJoin();
397	+	assertTrue(Thread.interrupted());
398	+	checkCancelled(f);
399	+
400	+	f = fibActions[5];
401	+	currentThread.interrupt();
402	+	f.quietlyJoin();
403	+	assertTrue(Thread.interrupted());
404	+	assertTrue(f.getException() instanceof FJException);
405	+	checkCompletedAbnormally(f, f.getException());
406	+	}};
407	+
408	+	Thread t;
409	+
410	+	t = newStartedThread(r);
411	+	testInvokeOnPool(mainPool(), a);
412	+	awaitTermination(t);
413	+
414	+	a.reinitialize();
415	+	t = newStartedThread(r);
416	+	testInvokeOnPool(singletonPool(), a);
417	+	awaitTermination(t);
418	+	}
419	+
420	+	/**
421		* get of a forked task returns when task completes
422		*/
423		public void testForkGet() {
424		RecursiveAction a = new CheckedRecursiveAction() {
425	<	public void realCompute() throws Exception {
425	>	protected void realCompute() throws Exception {
426		FibAction f = new FibAction(8);
427		assertSame(f, f.fork());
428		assertNull(f.get());
#	Line 336 | Line 437 | public class RecursiveActionTest extends
437		*/
438		public void testForkTimedGet() {
439		RecursiveAction a = new CheckedRecursiveAction() {
440	<	public void realCompute() throws Exception {
440	>	protected void realCompute() throws Exception {
441		FibAction f = new FibAction(8);
442		assertSame(f, f.fork());
443	<	assertNull(f.get(5L, SECONDS));
443	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
444		assertEquals(21, f.result);
445		checkCompletedNormally(f);
446		}};
#	Line 351 | Line 452 | public class RecursiveActionTest extends
452		*/
453		public void testForkTimedGetNPE() {
454		RecursiveAction a = new CheckedRecursiveAction() {
455	<	public void realCompute() throws Exception {
455	>	protected void realCompute() throws Exception {
456		FibAction f = new FibAction(8);
457		assertSame(f, f.fork());
458		try {
459	<	f.get(5L, null);
459	>	f.get(randomTimeout(), null);
460		shouldThrow();
461		} catch (NullPointerException success) {}
462		}};
#	Line 367 | Line 468 | public class RecursiveActionTest extends
468		*/
469		public void testForkQuietlyJoin() {
470		RecursiveAction a = new CheckedRecursiveAction() {
471	<	public void realCompute() {
471	>	protected void realCompute() {
472		FibAction f = new FibAction(8);
473		assertSame(f, f.fork());
474		f.quietlyJoin();
#	Line 377 | Line 478 | public class RecursiveActionTest extends
478		testInvokeOnPool(mainPool(), a);
479		}
480
380	–
481		/**
482		* helpQuiesce returns when tasks are complete.
483		* getQueuedTaskCount returns 0 when quiescent
484		*/
485		public void testForkHelpQuiesce() {
486		RecursiveAction a = new CheckedRecursiveAction() {
487	<	public void realCompute() {
487	>	protected void realCompute() {
488		FibAction f = new FibAction(8);
489		assertSame(f, f.fork());
490	<	f.helpQuiesce();
490	>	helpQuiesce();
491	>	while (!f.isDone()) // wait out race
492	>	;
493		assertEquals(21, f.result);
494		assertEquals(0, getQueuedTaskCount());
495		checkCompletedNormally(f);
#	Line 395 | Line 497 | public class RecursiveActionTest extends
497		testInvokeOnPool(mainPool(), a);
498		}
499
398	–
500		/**
501		* invoke task throws exception when task completes abnormally
502		*/
503		public void testAbnormalInvoke() {
504		RecursiveAction a = new CheckedRecursiveAction() {
505	<	public void realCompute() {
505	>	protected void realCompute() {
506		FailingFibAction f = new FailingFibAction(8);
507		try {
508		f.invoke();
#	Line 418 | Line 519 | public class RecursiveActionTest extends
519		*/
520		public void testAbnormalQuietlyInvoke() {
521		RecursiveAction a = new CheckedRecursiveAction() {
522	<	public void realCompute() {
522	>	protected void realCompute() {
523		FailingFibAction f = new FailingFibAction(8);
524		f.quietlyInvoke();
525		assertTrue(f.getException() instanceof FJException);
#	Line 432 | Line 533 | public class RecursiveActionTest extends
533		*/
534		public void testAbnormalForkJoin() {
535		RecursiveAction a = new CheckedRecursiveAction() {
536	<	public void realCompute() {
536	>	protected void realCompute() {
537		FailingFibAction f = new FailingFibAction(8);
538		assertSame(f, f.fork());
539		try {
#	Line 450 | Line 551 | public class RecursiveActionTest extends
551		*/
552		public void testAbnormalForkGet() {
553		RecursiveAction a = new CheckedRecursiveAction() {
554	<	public void realCompute() throws Exception {
554	>	protected void realCompute() throws Exception {
555		FailingFibAction f = new FailingFibAction(8);
556		assertSame(f, f.fork());
557		try {
#	Line 470 | Line 571 | public class RecursiveActionTest extends
571		*/
572		public void testAbnormalForkTimedGet() {
573		RecursiveAction a = new CheckedRecursiveAction() {
574	<	public void realCompute() throws Exception {
574	>	protected void realCompute() throws Exception {
575		FailingFibAction f = new FailingFibAction(8);
576		assertSame(f, f.fork());
577		try {
578	<	f.get(5L, TimeUnit.SECONDS);
578	>	f.get(LONG_DELAY_MS, MILLISECONDS);
579		shouldThrow();
580		} catch (ExecutionException success) {
581		Throwable cause = success.getCause();
#	Line 490 | Line 591 | public class RecursiveActionTest extends
591		*/
592		public void testAbnormalForkQuietlyJoin() {
593		RecursiveAction a = new CheckedRecursiveAction() {
594	<	public void realCompute() {
594	>	protected void realCompute() {
595		FailingFibAction f = new FailingFibAction(8);
596		assertSame(f, f.fork());
597		f.quietlyJoin();
#	Line 505 | Line 606 | public class RecursiveActionTest extends
606		*/
607		public void testCancelledInvoke() {
608		RecursiveAction a = new CheckedRecursiveAction() {
609	<	public void realCompute() {
609	>	protected void realCompute() {
610		FibAction f = new FibAction(8);
611		assertTrue(f.cancel(true));
612		try {
#	Line 523 | Line 624 | public class RecursiveActionTest extends
624		*/
625		public void testCancelledForkJoin() {
626		RecursiveAction a = new CheckedRecursiveAction() {
627	<	public void realCompute() {
627	>	protected void realCompute() {
628		FibAction f = new FibAction(8);
629		assertTrue(f.cancel(true));
630		assertSame(f, f.fork());
#	Line 542 | Line 643 | public class RecursiveActionTest extends
643		*/
644		public void testCancelledForkGet() {
645		RecursiveAction a = new CheckedRecursiveAction() {
646	<	public void realCompute() throws Exception {
646	>	protected void realCompute() throws Exception {
647		FibAction f = new FibAction(8);
648		assertTrue(f.cancel(true));
649		assertSame(f, f.fork());
#	Line 561 | Line 662 | public class RecursiveActionTest extends
662		*/
663		public void testCancelledForkTimedGet() {
664		RecursiveAction a = new CheckedRecursiveAction() {
665	<	public void realCompute() throws Exception {
665	>	protected void realCompute() throws Exception {
666		FibAction f = new FibAction(8);
667		assertTrue(f.cancel(true));
668		assertSame(f, f.fork());
669		try {
670	<	f.get(5L, SECONDS);
670	>	f.get(LONG_DELAY_MS, MILLISECONDS);
671		shouldThrow();
672		} catch (CancellationException success) {
673		checkCancelled(f);
#	Line 580 | Line 681 | public class RecursiveActionTest extends
681		*/
682		public void testCancelledForkQuietlyJoin() {
683		RecursiveAction a = new CheckedRecursiveAction() {
684	<	public void realCompute() {
684	>	protected void realCompute() {
685		FibAction f = new FibAction(8);
686		assertTrue(f.cancel(true));
687		assertSame(f, f.fork());
#	Line 596 | Line 697 | public class RecursiveActionTest extends
697		public void testGetPool() {
698		final ForkJoinPool mainPool = mainPool();
699		RecursiveAction a = new CheckedRecursiveAction() {
700	<	public void realCompute() {
700	>	protected void realCompute() {
701		assertSame(mainPool, getPool());
702		}};
703		testInvokeOnPool(mainPool, a);
#	Line 607 | Line 708 | public class RecursiveActionTest extends
708		*/
709		public void testGetPool2() {
710		RecursiveAction a = new CheckedRecursiveAction() {
711	<	public void realCompute() {
711	>	protected void realCompute() {
712		assertNull(getPool());
713		}};
714		assertNull(a.invoke());
#	Line 618 | Line 719 | public class RecursiveActionTest extends
719		*/
720		public void testInForkJoinPool() {
721		RecursiveAction a = new CheckedRecursiveAction() {
722	<	public void realCompute() {
722	>	protected void realCompute() {
723		assertTrue(inForkJoinPool());
724		}};
725		testInvokeOnPool(mainPool(), a);
#	Line 629 | Line 730 | public class RecursiveActionTest extends
730		*/
731		public void testInForkJoinPool2() {
732		RecursiveAction a = new CheckedRecursiveAction() {
733	<	public void realCompute() {
733	>	protected void realCompute() {
734		assertFalse(inForkJoinPool());
735		}};
736		assertNull(a.invoke());
#	Line 641 | Line 742 | public class RecursiveActionTest extends
742		public void testWorkerGetPool() {
743		final ForkJoinPool mainPool = mainPool();
744		RecursiveAction a = new CheckedRecursiveAction() {
745	<	public void realCompute() {
745	>	protected void realCompute() {
746		ForkJoinWorkerThread w =
747		(ForkJoinWorkerThread) Thread.currentThread();
748		assertSame(mainPool, w.getPool());
#	Line 655 | Line 756 | public class RecursiveActionTest extends
756		public void testWorkerGetPoolIndex() {
757		final ForkJoinPool mainPool = mainPool();
758		RecursiveAction a = new CheckedRecursiveAction() {
759	<	public void realCompute() {
759	>	protected void realCompute() {
760		ForkJoinWorkerThread w =
761	<	(ForkJoinWorkerThread)(Thread.currentThread());
761	>	(ForkJoinWorkerThread) Thread.currentThread();
762		assertTrue(w.getPoolIndex() >= 0);
763	<	assertTrue(w.getPoolIndex() < mainPool.getPoolSize());
763	>	// pool size can shrink after assigning index, so cannot check
764	>	// assertTrue(w.getPoolIndex() < mainPool.getPoolSize());
765		}};
766		testInvokeOnPool(mainPool, a);
767		}
768
667	–
769		/**
770		* setRawResult(null) succeeds
771		*/
772		public void testSetRawResult() {
773		RecursiveAction a = new CheckedRecursiveAction() {
774	<	public void realCompute() {
774	>	protected void realCompute() {
775		setRawResult(null);
776		assertNull(getRawResult());
777		}};
#	Line 678 | Line 779 | public class RecursiveActionTest extends
779		}
780
781		/**
782	<	* A reinitialized task may be re-invoked
782	>	* A reinitialized normally completed task may be re-invoked
783		*/
784		public void testReinitialize() {
785		RecursiveAction a = new CheckedRecursiveAction() {
786	<	public void realCompute() {
786	>	protected void realCompute() {
787		FibAction f = new FibAction(8);
788		checkNotDone(f);
789
#	Line 698 | Line 799 | public class RecursiveActionTest extends
799		}
800
801		/**
802	+	* A reinitialized abnormally completed task may be re-invoked
803	+	*/
804	+	public void testReinitializeAbnormal() {
805	+	RecursiveAction a = new CheckedRecursiveAction() {
806	+	protected void realCompute() {
807	+	FailingFibAction f = new FailingFibAction(8);
808	+	checkNotDone(f);
809	+
810	+	for (int i = 0; i < 3; i++) {
811	+	try {
812	+	f.invoke();
813	+	shouldThrow();
814	+	} catch (FJException success) {
815	+	checkCompletedAbnormally(f, success);
816	+	}
817	+	f.reinitialize();
818	+	checkNotDone(f);
819	+	}
820	+	}};
821	+	testInvokeOnPool(mainPool(), a);
822	+	}
823	+
824	+	/**
825		* invoke task throws exception after invoking completeExceptionally
826		*/
827		public void testCompleteExceptionally() {
828		RecursiveAction a = new CheckedRecursiveAction() {
829	<	public void realCompute() {
829	>	protected void realCompute() {
830		FibAction f = new FibAction(8);
831		f.completeExceptionally(new FJException());
832		try {
#	Line 720 | Line 844 | public class RecursiveActionTest extends
844		*/
845		public void testComplete() {
846		RecursiveAction a = new CheckedRecursiveAction() {
847	<	public void realCompute() {
847	>	protected void realCompute() {
848		FibAction f = new FibAction(8);
849		f.complete(null);
850		assertNull(f.invoke());
#	Line 735 | Line 859 | public class RecursiveActionTest extends
859		*/
860		public void testInvokeAll2() {
861		RecursiveAction a = new CheckedRecursiveAction() {
862	<	public void realCompute() {
862	>	protected void realCompute() {
863		FibAction f = new FibAction(8);
864		FibAction g = new FibAction(9);
865		invokeAll(f, g);
#	Line 752 | Line 876 | public class RecursiveActionTest extends
876		*/
877		public void testInvokeAll1() {
878		RecursiveAction a = new CheckedRecursiveAction() {
879	<	public void realCompute() {
879	>	protected void realCompute() {
880		FibAction f = new FibAction(8);
881		invokeAll(f);
882		checkCompletedNormally(f);
#	Line 766 | Line 890 | public class RecursiveActionTest extends
890		*/
891		public void testInvokeAll3() {
892		RecursiveAction a = new CheckedRecursiveAction() {
893	<	public void realCompute() {
893	>	protected void realCompute() {
894		FibAction f = new FibAction(8);
895		FibAction g = new FibAction(9);
896		FibAction h = new FibAction(7);
#	Line 789 | Line 913 | public class RecursiveActionTest extends
913		*/
914		public void testInvokeAllCollection() {
915		RecursiveAction a = new CheckedRecursiveAction() {
916	<	public void realCompute() {
916	>	protected void realCompute() {
917		FibAction f = new FibAction(8);
918		FibAction g = new FibAction(9);
919		FibAction h = new FibAction(7);
#	Line 811 | Line 935 | public class RecursiveActionTest extends
935		testInvokeOnPool(mainPool(), a);
936		}
937
814	–
938		/**
939		* invokeAll(tasks) with any null task throws NPE
940		*/
941		public void testInvokeAllNPE() {
942		RecursiveAction a = new CheckedRecursiveAction() {
943	<	public void realCompute() {
943	>	protected void realCompute() {
944		FibAction f = new FibAction(8);
945		FibAction g = new FibAction(9);
946		FibAction h = null;
#	Line 834 | Line 957 | public class RecursiveActionTest extends
957		*/
958		public void testAbnormalInvokeAll2() {
959		RecursiveAction a = new CheckedRecursiveAction() {
960	<	public void realCompute() {
960	>	protected void realCompute() {
961		FibAction f = new FibAction(8);
962		FailingFibAction g = new FailingFibAction(9);
963		try {
#	Line 852 | Line 975 | public class RecursiveActionTest extends
975		*/
976		public void testAbnormalInvokeAll1() {
977		RecursiveAction a = new CheckedRecursiveAction() {
978	<	public void realCompute() {
978	>	protected void realCompute() {
979		FailingFibAction g = new FailingFibAction(9);
980		try {
981		invokeAll(g);
#	Line 869 | Line 992 | public class RecursiveActionTest extends
992		*/
993		public void testAbnormalInvokeAll3() {
994		RecursiveAction a = new CheckedRecursiveAction() {
995	<	public void realCompute() {
995	>	protected void realCompute() {
996		FibAction f = new FibAction(8);
997		FailingFibAction g = new FailingFibAction(9);
998		FibAction h = new FibAction(7);
#	Line 888 | Line 1011 | public class RecursiveActionTest extends
1011		*/
1012		public void testAbnormalInvokeAllCollection() {
1013		RecursiveAction a = new CheckedRecursiveAction() {
1014	<	public void realCompute() {
1014	>	protected void realCompute() {
1015		FailingFibAction f = new FailingFibAction(8);
1016		FibAction g = new FibAction(9);
1017		FibAction h = new FibAction(7);
#	Line 912 | Line 1035 | public class RecursiveActionTest extends
1035		*/
1036		public void testTryUnfork() {
1037		RecursiveAction a = new CheckedRecursiveAction() {
1038	<	public void realCompute() {
1038	>	protected void realCompute() {
1039		FibAction g = new FibAction(9);
1040		assertSame(g, g.fork());
1041		FibAction f = new FibAction(8);
#	Line 931 | Line 1054 | public class RecursiveActionTest extends
1054		*/
1055		public void testGetSurplusQueuedTaskCount() {
1056		RecursiveAction a = new CheckedRecursiveAction() {
1057	<	public void realCompute() {
1057	>	protected void realCompute() {
1058		FibAction h = new FibAction(7);
1059		assertSame(h, h.fork());
1060		FibAction g = new FibAction(9);
#	Line 953 | Line 1076 | public class RecursiveActionTest extends
1076		*/
1077		public void testPeekNextLocalTask() {
1078		RecursiveAction a = new CheckedRecursiveAction() {
1079	<	public void realCompute() {
1079	>	protected void realCompute() {
1080		FibAction g = new FibAction(9);
1081		assertSame(g, g.fork());
1082		FibAction f = new FibAction(8);
#	Line 974 | Line 1097 | public class RecursiveActionTest extends
1097		*/
1098		public void testPollNextLocalTask() {
1099		RecursiveAction a = new CheckedRecursiveAction() {
1100	<	public void realCompute() {
1100	>	protected void realCompute() {
1101		FibAction g = new FibAction(9);
1102		assertSame(g, g.fork());
1103		FibAction f = new FibAction(8);
#	Line 992 | Line 1115 | public class RecursiveActionTest extends
1115		*/
1116		public void testPollTask() {
1117		RecursiveAction a = new CheckedRecursiveAction() {
1118	<	public void realCompute() {
1118	>	protected void realCompute() {
1119		FibAction g = new FibAction(9);
1120		assertSame(g, g.fork());
1121		FibAction f = new FibAction(8);
#	Line 1010 | Line 1133 | public class RecursiveActionTest extends
1133		*/
1134		public void testPeekNextLocalTaskAsync() {
1135		RecursiveAction a = new CheckedRecursiveAction() {
1136	<	public void realCompute() {
1136	>	protected void realCompute() {
1137		FibAction g = new FibAction(9);
1138		assertSame(g, g.fork());
1139		FibAction f = new FibAction(8);
#	Line 1030 | Line 1153 | public class RecursiveActionTest extends
1153		*/
1154		public void testPollNextLocalTaskAsync() {
1155		RecursiveAction a = new CheckedRecursiveAction() {
1156	<	public void realCompute() {
1156	>	protected void realCompute() {
1157		FibAction g = new FibAction(9);
1158		assertSame(g, g.fork());
1159		FibAction f = new FibAction(8);
#	Line 1049 | Line 1172 | public class RecursiveActionTest extends
1172		*/
1173		public void testPollTaskAsync() {
1174		RecursiveAction a = new CheckedRecursiveAction() {
1175	<	public void realCompute() {
1175	>	protected void realCompute() {
1176		FibAction g = new FibAction(9);
1177		assertSame(g, g.fork());
1178		FibAction f = new FibAction(8);
#	Line 1062 | Line 1185 | public class RecursiveActionTest extends
1185		testInvokeOnPool(asyncSingletonPool(), a);
1186		}
1187
1188	+	/** Demo from RecursiveAction javadoc */
1189	+	static class SortTask extends RecursiveAction {
1190	+	final long[] array; final int lo, hi;
1191	+	SortTask(long[] array, int lo, int hi) {
1192	+	this.array = array; this.lo = lo; this.hi = hi;
1193	+	}
1194	+	SortTask(long[] array) { this(array, 0, array.length); }
1195	+	protected void compute() {
1196	+	if (hi - lo < THRESHOLD)
1197	+	sortSequentially(lo, hi);
1198	+	else {
1199	+	int mid = (lo + hi) >>> 1;
1200	+	invokeAll(new SortTask(array, lo, mid),
1201	+	new SortTask(array, mid, hi));
1202	+	merge(lo, mid, hi);
1203	+	}
1204	+	}
1205	+	// implementation details follow:
1206	+	static final int THRESHOLD = 100;
1207	+	void sortSequentially(int lo, int hi) {
1208	+	Arrays.sort(array, lo, hi);
1209	+	}
1210	+	void merge(int lo, int mid, int hi) {
1211	+	long[] buf = Arrays.copyOfRange(array, lo, mid);
1212	+	for (int i = 0, j = lo, k = mid; i < buf.length; j++)
1213	+	array[j] = (k == hi || buf[i] < array[k]) ?
1214	+	buf[i++] : array[k++];
1215	+	}
1216	+	}
1217	+
1218	+	/**
1219	+	* SortTask demo works as advertised
1220	+	*/
1221	+	public void testSortTaskDemo() {
1222	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
1223	+	long[] array = new long[1007];
1224	+	for (int i = 0; i < array.length; i++)
1225	+	array[i] = rnd.nextLong();
1226	+	long[] arrayClone = array.clone();
1227	+	testInvokeOnPool(mainPool(), new SortTask(array));
1228	+	Arrays.sort(arrayClone);
1229	+	assertTrue(Arrays.equals(array, arrayClone));
1230	+	}
1231		}

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