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Comparing jsr166/src/test/tck/ForkJoinTaskTest.java (file contents):
Revision 1.14 by jsr166, Mon Sep 13 07:51:18 2010 UTC vs.
Revision 1.50 by jsr166, Wed Aug 10 01:28:14 2016 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	<	import java.util.concurrent.ExecutionException;
6	>
7	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
8	>	import static java.util.concurrent.TimeUnit.SECONDS;
9	>
10	>	import java.util.Arrays;
11	>	import java.util.Collections;
12	>	import java.util.HashSet;
13	>	import java.util.List;
14		import java.util.concurrent.CancellationException;
15	+	import java.util.concurrent.ExecutionException;
16		import java.util.concurrent.ForkJoinPool;
17		import java.util.concurrent.ForkJoinTask;
10	–	import java.util.concurrent.ForkJoinWorkerThread;
18		import java.util.concurrent.RecursiveAction;
19	<	import java.util.concurrent.TimeUnit;
20	<	import java.util.concurrent.atomic.*;
21	<	import java.util.*;
22	<	import junit.framework.*;
19	>	import java.util.concurrent.TimeoutException;
20	>	import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
21	>
22	>	import junit.framework.Test;
23	>	import junit.framework.TestSuite;
24
25		public class ForkJoinTaskTest extends JSR166TestCase {
26
27		public static void main(String[] args) {
28	<	junit.textui.TestRunner.run(suite());
28	>	main(suite(), args);
29		}
30
31		public static Test suite() {
32		return new TestSuite(ForkJoinTaskTest.class);
33		}
34
35	+	// Runs with "mainPool" use > 1 thread. singletonPool tests use 1
36	+	static final int mainPoolSize =
37	+	Math.max(2, Runtime.getRuntime().availableProcessors());
38	+
39		private static ForkJoinPool mainPool() {
40	<	return new ForkJoinPool();
40	>	return new ForkJoinPool(mainPoolSize);
41		}
42
43		private static ForkJoinPool singletonPool() {
#	Line 39 | Line 51 | public class ForkJoinTaskTest extends JS
51		}
52
53		private void testInvokeOnPool(ForkJoinPool pool, RecursiveAction a) {
54	+	try (PoolCleaner cleaner = cleaner(pool)) {
55	+	assertFalse(a.isDone());
56	+	assertFalse(a.isCompletedNormally());
57	+	assertFalse(a.isCompletedAbnormally());
58	+	assertFalse(a.isCancelled());
59	+	assertNull(a.getException());
60	+	assertNull(a.getRawResult());
61	+
62	+	assertNull(pool.invoke(a));
63	+
64	+	assertTrue(a.isDone());
65	+	assertTrue(a.isCompletedNormally());
66	+	assertFalse(a.isCompletedAbnormally());
67	+	assertFalse(a.isCancelled());
68	+	assertNull(a.getException());
69	+	assertNull(a.getRawResult());
70	+	}
71	+	}
72	+
73	+	void checkNotDone(ForkJoinTask a) {
74	+	assertFalse(a.isDone());
75	+	assertFalse(a.isCompletedNormally());
76	+	assertFalse(a.isCompletedAbnormally());
77	+	assertFalse(a.isCancelled());
78	+	assertNull(a.getException());
79	+	assertNull(a.getRawResult());
80	+
81		try {
82	<	assertTrue(pool.invoke(a) == null);
83	<	} finally {
84	<	joinPool(pool);
82	>	a.get(0L, SECONDS);
83	>	shouldThrow();
84	>	} catch (TimeoutException success) {
85	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
86	>	}
87	>
88	>	<T> void checkCompletedNormally(ForkJoinTask<T> a) {
89	>	checkCompletedNormally(a, null);
90	>	}
91	>
92	>	<T> void checkCompletedNormally(ForkJoinTask<T> a, T expected) {
93	>	assertTrue(a.isDone());
94	>	assertFalse(a.isCancelled());
95	>	assertTrue(a.isCompletedNormally());
96	>	assertFalse(a.isCompletedAbnormally());
97	>	assertNull(a.getException());
98	>	assertSame(expected, a.getRawResult());
99	>
100	>	{
101	>	Thread.currentThread().interrupt();
102	>	long startTime = System.nanoTime();
103	>	assertSame(expected, a.join());
104	>	assertTrue(millisElapsedSince(startTime) < SMALL_DELAY_MS);
105	>	Thread.interrupted();
106	>	}
107	>
108	>	{
109	>	Thread.currentThread().interrupt();
110	>	long startTime = System.nanoTime();
111	>	a.quietlyJoin();        // should be no-op
112	>	assertTrue(millisElapsedSince(startTime) < SMALL_DELAY_MS);
113	>	Thread.interrupted();
114		}
115	+
116	+	assertFalse(a.cancel(false));
117	+	assertFalse(a.cancel(true));
118	+	try {
119	+	assertSame(expected, a.get());
120	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
121	+	try {
122	+	assertSame(expected, a.get(5L, SECONDS));
123	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
124	+	}
125	+
126	+	void checkCancelled(ForkJoinTask a) {
127	+	assertTrue(a.isDone());
128	+	assertTrue(a.isCancelled());
129	+	assertFalse(a.isCompletedNormally());
130	+	assertTrue(a.isCompletedAbnormally());
131	+	assertTrue(a.getException() instanceof CancellationException);
132	+	assertNull(a.getRawResult());
133	+	assertTrue(a.cancel(false));
134	+	assertTrue(a.cancel(true));
135	+
136	+	try {
137	+	Thread.currentThread().interrupt();
138	+	a.join();
139	+	shouldThrow();
140	+	} catch (CancellationException success) {
141	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
142	+	Thread.interrupted();
143	+
144	+	{
145	+	long startTime = System.nanoTime();
146	+	a.quietlyJoin();        // should be no-op
147	+	assertTrue(millisElapsedSince(startTime) < SMALL_DELAY_MS);
148	+	}
149	+
150	+	try {
151	+	a.get();
152	+	shouldThrow();
153	+	} catch (CancellationException success) {
154	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
155	+
156	+	try {
157	+	a.get(5L, SECONDS);
158	+	shouldThrow();
159	+	} catch (CancellationException success) {
160	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
161	+	}
162	+
163	+	void checkCompletedAbnormally(ForkJoinTask a, Throwable t) {
164	+	assertTrue(a.isDone());
165	+	assertFalse(a.isCancelled());
166	+	assertFalse(a.isCompletedNormally());
167	+	assertTrue(a.isCompletedAbnormally());
168	+	assertSame(t.getClass(), a.getException().getClass());
169	+	assertNull(a.getRawResult());
170	+	assertFalse(a.cancel(false));
171	+	assertFalse(a.cancel(true));
172	+
173	+	try {
174	+	Thread.currentThread().interrupt();
175	+	a.join();
176	+	shouldThrow();
177	+	} catch (Throwable expected) {
178	+	assertSame(t.getClass(), expected.getClass());
179	+	}
180	+	Thread.interrupted();
181	+
182	+	{
183	+	long startTime = System.nanoTime();
184	+	a.quietlyJoin();        // should be no-op
185	+	assertTrue(millisElapsedSince(startTime) < SMALL_DELAY_MS);
186	+	}
187	+
188	+	try {
189	+	a.get();
190	+	shouldThrow();
191	+	} catch (ExecutionException success) {
192	+	assertSame(t.getClass(), success.getCause().getClass());
193	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
194	+
195	+	try {
196	+	a.get(5L, SECONDS);
197	+	shouldThrow();
198	+	} catch (ExecutionException success) {
199	+	assertSame(t.getClass(), success.getCause().getClass());
200	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
201		}
202
203		/*
#	Line 54 | Line 208 | public class ForkJoinTaskTest extends JS
208		* differently than supplied Recursive forms.
209		*/
210
211	<	static final class FJException extends RuntimeException {
211	>	public static final class FJException extends RuntimeException {
212		FJException() { super(); }
213		}
214
215	<	static abstract class BinaryAsyncAction extends ForkJoinTask<Void> {
215	>	abstract static class BinaryAsyncAction extends ForkJoinTask<Void> {
216		private volatile int controlState;
217
218		static final AtomicIntegerFieldUpdater<BinaryAsyncAction> controlStateUpdater =
219		AtomicIntegerFieldUpdater.newUpdater(BinaryAsyncAction.class,
220		"controlState");
221
222	<	private BinaryAsyncAction parent;
222	>	private volatile BinaryAsyncAction parent;
223
224	<	private BinaryAsyncAction sibling;
224	>	private volatile BinaryAsyncAction sibling;
225
226		protected BinaryAsyncAction() {
227		}
#	Line 102 | Line 256 | public class ForkJoinTaskTest extends JS
256		super.completeExceptionally(ex);
257		}
258
259	+	public boolean cancel(boolean mayInterruptIfRunning) {
260	+	if (super.cancel(mayInterruptIfRunning)) {
261	+	completeExceptionally(new FJException());
262	+	return true;
263	+	}
264	+	return false;
265	+	}
266	+
267		public final void complete() {
268		BinaryAsyncAction a = this;
269		for (;;) {
#	Line 123 | Line 285 | public class ForkJoinTaskTest extends JS
285		}
286
287		public final void completeExceptionally(Throwable ex) {
288	<	BinaryAsyncAction a = this;
127	<	while (!a.isCompletedAbnormally()) {
288	>	for (BinaryAsyncAction a = this;;) {
289		a.completeThisExceptionally(ex);
290		BinaryAsyncAction s = a.sibling;
291	<	if (s != null)
292	<	s.cancel(false);
293	<	if (!a.onException() || (a = a.parent) == null)
291	>	if (s != null && !s.isDone())
292	>	s.completeExceptionally(ex);
293	>	if ((a = a.parent) == null)
294		break;
295		}
296		}
#	Line 179 | Line 340 | public class ForkJoinTaskTest extends JS
340		public final boolean exec() {
341		AsyncFib f = this;
342		int n = f.number;
343	<	if (n > 1) {
344	<	while (n > 1) {
345	<	AsyncFib p = f;
346	<	AsyncFib r = new AsyncFib(n - 2);
347	<	f = new AsyncFib(--n);
348	<	p.linkSubtasks(r, f);
188	<	r.fork();
189	<	}
190	<	f.number = n;
343	>	while (n > 1) {
344	>	AsyncFib p = f;
345	>	AsyncFib r = new AsyncFib(n - 2);
346	>	f = new AsyncFib(--n);
347	>	p.linkSubtasks(r, f);
348	>	r.fork();
349		}
350		f.complete();
351		return false;
#	Line 198 | Line 356 | public class ForkJoinTaskTest extends JS
356		}
357		}
358
201	–
359		static final class FailingAsyncFib extends BinaryAsyncAction {
360		int number;
361		public FailingAsyncFib(int n) {
#	Line 208 | Line 365 | public class ForkJoinTaskTest extends JS
365		public final boolean exec() {
366		FailingAsyncFib f = this;
367		int n = f.number;
368	<	if (n > 1) {
369	<	while (n > 1) {
370	<	FailingAsyncFib p = f;
371	<	FailingAsyncFib r = new FailingAsyncFib(n - 2);
372	<	f = new FailingAsyncFib(--n);
373	<	p.linkSubtasks(r, f);
217	<	r.fork();
218	<	}
219	<	f.number = n;
368	>	while (n > 1) {
369	>	FailingAsyncFib p = f;
370	>	FailingAsyncFib r = new FailingAsyncFib(n - 2);
371	>	f = new FailingAsyncFib(--n);
372	>	p.linkSubtasks(r, f);
373	>	r.fork();
374		}
375		f.complete();
376		return false;
#	Line 230 | Line 384 | public class ForkJoinTaskTest extends JS
384		/**
385		* invoke returns when task completes normally.
386		* isCompletedAbnormally and isCancelled return false for normally
387	<	* completed tasks. getRawResult of a RecursiveAction returns null;
387	>	* completed tasks; getRawResult returns null.
388		*/
389		public void testInvoke() {
390	<	RecursiveAction a = new RecursiveAction() {
391	<	public void compute() {
390	>	RecursiveAction a = new CheckedRecursiveAction() {
391	>	protected void realCompute() {
392		AsyncFib f = new AsyncFib(8);
393	<	f.invoke();
394	<	threadAssertTrue(f.number == 21);
395	<	threadAssertTrue(f.isDone());
242	<	threadAssertFalse(f.isCancelled());
243	<	threadAssertFalse(f.isCompletedAbnormally());
244	<	threadAssertTrue(f.getRawResult() == null);
393	>	assertNull(f.invoke());
394	>	assertEquals(21, f.number);
395	>	checkCompletedNormally(f);
396		}};
397		testInvokeOnPool(mainPool(), a);
398		}
#	Line 252 | Line 403 | public class ForkJoinTaskTest extends JS
403		* completed tasks
404		*/
405		public void testQuietlyInvoke() {
406	<	RecursiveAction a = new RecursiveAction() {
407	<	public void compute() {
406	>	RecursiveAction a = new CheckedRecursiveAction() {
407	>	protected void realCompute() {
408		AsyncFib f = new AsyncFib(8);
409		f.quietlyInvoke();
410	<	threadAssertTrue(f.number == 21);
411	<	threadAssertTrue(f.isDone());
261	<	threadAssertFalse(f.isCancelled());
262	<	threadAssertFalse(f.isCompletedAbnormally());
263	<	threadAssertTrue(f.getRawResult() == null);
410	>	assertEquals(21, f.number);
411	>	checkCompletedNormally(f);
412		}};
413		testInvokeOnPool(mainPool(), a);
414		}
#	Line 269 | Line 417 | public class ForkJoinTaskTest extends JS
417		* join of a forked task returns when task completes
418		*/
419		public void testForkJoin() {
420	<	RecursiveAction a = new RecursiveAction() {
421	<	public void compute() {
420	>	RecursiveAction a = new CheckedRecursiveAction() {
421	>	protected void realCompute() {
422		AsyncFib f = new AsyncFib(8);
423	<	f.fork();
424	<	f.join();
425	<	threadAssertTrue(f.number == 21);
426	<	threadAssertTrue(f.isDone());
279	<	threadAssertTrue(f.getRawResult() == null);
423	>	assertSame(f, f.fork());
424	>	assertNull(f.join());
425	>	assertEquals(21, f.number);
426	>	checkCompletedNormally(f);
427		}};
428		testInvokeOnPool(mainPool(), a);
429		}
#	Line 285 | Line 432 | public class ForkJoinTaskTest extends JS
432		* get of a forked task returns when task completes
433		*/
434		public void testForkGet() {
435	<	RecursiveAction a = new RecursiveAction() {
436	<	public void compute() {
437	<	try {
438	<	AsyncFib f = new AsyncFib(8);
439	<	f.fork();
440	<	f.get();
441	<	threadAssertTrue(f.number == 21);
295	<	threadAssertTrue(f.isDone());
296	<	} catch (Exception ex) {
297	<	unexpectedException(ex);
298	<	}
435	>	RecursiveAction a = new CheckedRecursiveAction() {
436	>	protected void realCompute() throws Exception {
437	>	AsyncFib f = new AsyncFib(8);
438	>	assertSame(f, f.fork());
439	>	assertNull(f.get());
440	>	assertEquals(21, f.number);
441	>	checkCompletedNormally(f);
442		}};
443		testInvokeOnPool(mainPool(), a);
444		}
#	Line 304 | Line 447 | public class ForkJoinTaskTest extends JS
447		* timed get of a forked task returns when task completes
448		*/
449		public void testForkTimedGet() {
450	<	RecursiveAction a = new RecursiveAction() {
451	<	public void compute() {
452	<	try {
453	<	AsyncFib f = new AsyncFib(8);
454	<	f.fork();
455	<	f.get(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
456	<	threadAssertTrue(f.number == 21);
314	<	threadAssertTrue(f.isDone());
315	<	} catch (Exception ex) {
316	<	unexpectedException(ex);
317	<	}
450	>	RecursiveAction a = new CheckedRecursiveAction() {
451	>	protected void realCompute() throws Exception {
452	>	AsyncFib f = new AsyncFib(8);
453	>	assertSame(f, f.fork());
454	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
455	>	assertEquals(21, f.number);
456	>	checkCompletedNormally(f);
457		}};
458		testInvokeOnPool(mainPool(), a);
459		}
#	Line 323 | Line 462 | public class ForkJoinTaskTest extends JS
462		* timed get with null time unit throws NPE
463		*/
464		public void testForkTimedGetNPE() {
465	<	RecursiveAction a = new RecursiveAction() {
466	<	public void compute() {
465	>	RecursiveAction a = new CheckedRecursiveAction() {
466	>	protected void realCompute() throws Exception {
467	>	AsyncFib f = new AsyncFib(8);
468	>	assertSame(f, f.fork());
469		try {
329	–	AsyncFib f = new AsyncFib(8);
330	–	f.fork();
470		f.get(5L, null);
471		shouldThrow();
472	<	} catch (NullPointerException success) {
334	<	} catch (Exception ex) {
335	<	unexpectedException(ex);
336	<	}
472	>	} catch (NullPointerException success) {}
473		}};
474		testInvokeOnPool(mainPool(), a);
475		}
#	Line 342 | Line 478 | public class ForkJoinTaskTest extends JS
478		* quietlyJoin of a forked task returns when task completes
479		*/
480		public void testForkQuietlyJoin() {
481	<	RecursiveAction a = new RecursiveAction() {
482	<	public void compute() {
481	>	RecursiveAction a = new CheckedRecursiveAction() {
482	>	protected void realCompute() {
483		AsyncFib f = new AsyncFib(8);
484	<	f.fork();
484	>	assertSame(f, f.fork());
485		f.quietlyJoin();
486	<	threadAssertTrue(f.number == 21);
487	<	threadAssertTrue(f.isDone());
486	>	assertEquals(21, f.number);
487	>	checkCompletedNormally(f);
488		}};
489		testInvokeOnPool(mainPool(), a);
490		}
491
356	–
492		/**
493		* helpQuiesce returns when tasks are complete.
494		* getQueuedTaskCount returns 0 when quiescent
495		*/
496		public void testForkHelpQuiesce() {
497	<	RecursiveAction a = new RecursiveAction() {
498	<	public void compute() {
497	>	RecursiveAction a = new CheckedRecursiveAction() {
498	>	protected void realCompute() {
499		AsyncFib f = new AsyncFib(8);
500	<	f.fork();
501	<	f.helpQuiesce();
502	<	threadAssertTrue(f.number == 21);
503	<	threadAssertTrue(f.isDone());
504	<	threadAssertTrue(getQueuedTaskCount() == 0);
500	>	assertSame(f, f.fork());
501	>	helpQuiesce();
502	>	assertEquals(21, f.number);
503	>	assertEquals(0, getQueuedTaskCount());
504	>	checkCompletedNormally(f);
505		}};
506		testInvokeOnPool(mainPool(), a);
507		}
508
374	–
509		/**
510		* invoke task throws exception when task completes abnormally
511		*/
512		public void testAbnormalInvoke() {
513	<	RecursiveAction a = new RecursiveAction() {
514	<	public void compute() {
513	>	RecursiveAction a = new CheckedRecursiveAction() {
514	>	protected void realCompute() {
515	>	FailingAsyncFib f = new FailingAsyncFib(8);
516		try {
382	–	FailingAsyncFib f = new FailingAsyncFib(8);
517		f.invoke();
518		shouldThrow();
519		} catch (FJException success) {
520	+	checkCompletedAbnormally(f, success);
521		}
522		}};
523		testInvokeOnPool(mainPool(), a);
#	Line 392 | Line 527 | public class ForkJoinTaskTest extends JS
527		* quietlyInvoke task returns when task completes abnormally
528		*/
529		public void testAbnormalQuietlyInvoke() {
530	<	RecursiveAction a = new RecursiveAction() {
531	<	public void compute() {
530	>	RecursiveAction a = new CheckedRecursiveAction() {
531	>	protected void realCompute() {
532		FailingAsyncFib f = new FailingAsyncFib(8);
533		f.quietlyInvoke();
534	<	threadAssertTrue(f.isDone());
534	>	assertTrue(f.getException() instanceof FJException);
535	>	checkCompletedAbnormally(f, f.getException());
536		}};
537		testInvokeOnPool(mainPool(), a);
538		}
#	Line 405 | Line 541 | public class ForkJoinTaskTest extends JS
541		* join of a forked task throws exception when task completes abnormally
542		*/
543		public void testAbnormalForkJoin() {
544	<	RecursiveAction a = new RecursiveAction() {
545	<	public void compute() {
544	>	RecursiveAction a = new CheckedRecursiveAction() {
545	>	protected void realCompute() {
546	>	FailingAsyncFib f = new FailingAsyncFib(8);
547	>	assertSame(f, f.fork());
548		try {
411	–	FailingAsyncFib f = new FailingAsyncFib(8);
412	–	f.fork();
549		f.join();
550		shouldThrow();
551		} catch (FJException success) {
552	+	checkCompletedAbnormally(f, success);
553		}
554		}};
555		testInvokeOnPool(mainPool(), a);
#	Line 422 | Line 559 | public class ForkJoinTaskTest extends JS
559		* get of a forked task throws exception when task completes abnormally
560		*/
561		public void testAbnormalForkGet() {
562	<	RecursiveAction a = new RecursiveAction() {
563	<	public void compute() {
562	>	RecursiveAction a = new CheckedRecursiveAction() {
563	>	protected void realCompute() throws Exception {
564	>	FailingAsyncFib f = new FailingAsyncFib(8);
565	>	assertSame(f, f.fork());
566		try {
428	–	FailingAsyncFib f = new FailingAsyncFib(8);
429	–	f.fork();
567		f.get();
568		shouldThrow();
569		} catch (ExecutionException success) {
570	<	} catch (Exception ex) {
571	<	unexpectedException(ex);
570	>	Throwable cause = success.getCause();
571	>	assertTrue(cause instanceof FJException);
572	>	checkCompletedAbnormally(f, cause);
573		}
574		}};
575		testInvokeOnPool(mainPool(), a);
#	Line 441 | Line 579 | public class ForkJoinTaskTest extends JS
579		* timed get of a forked task throws exception when task completes abnormally
580		*/
581		public void testAbnormalForkTimedGet() {
582	<	RecursiveAction a = new RecursiveAction() {
583	<	public void compute() {
582	>	RecursiveAction a = new CheckedRecursiveAction() {
583	>	protected void realCompute() throws Exception {
584	>	FailingAsyncFib f = new FailingAsyncFib(8);
585	>	assertSame(f, f.fork());
586		try {
587	<	FailingAsyncFib f = new FailingAsyncFib(8);
448	<	f.fork();
449	<	f.get(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
587	>	f.get(LONG_DELAY_MS, MILLISECONDS);
588		shouldThrow();
589		} catch (ExecutionException success) {
590	<	} catch (Exception ex) {
591	<	unexpectedException(ex);
590	>	Throwable cause = success.getCause();
591	>	assertTrue(cause instanceof FJException);
592	>	checkCompletedAbnormally(f, cause);
593		}
594		}};
595		testInvokeOnPool(mainPool(), a);
#	Line 460 | Line 599 | public class ForkJoinTaskTest extends JS
599		* quietlyJoin of a forked task returns when task completes abnormally
600		*/
601		public void testAbnormalForkQuietlyJoin() {
602	<	RecursiveAction a = new RecursiveAction() {
603	<	public void compute() {
602	>	RecursiveAction a = new CheckedRecursiveAction() {
603	>	protected void realCompute() {
604		FailingAsyncFib f = new FailingAsyncFib(8);
605	<	f.fork();
605	>	assertSame(f, f.fork());
606		f.quietlyJoin();
607	<	threadAssertTrue(f.isDone());
608	<	threadAssertTrue(f.isCompletedAbnormally());
470	<	threadAssertTrue(f.getException() instanceof FJException);
607	>	assertTrue(f.getException() instanceof FJException);
608	>	checkCompletedAbnormally(f, f.getException());
609		}};
610		testInvokeOnPool(mainPool(), a);
611		}
#	Line 476 | Line 614 | public class ForkJoinTaskTest extends JS
614		* invoke task throws exception when task cancelled
615		*/
616		public void testCancelledInvoke() {
617	<	RecursiveAction a = new RecursiveAction() {
618	<	public void compute() {
617	>	RecursiveAction a = new CheckedRecursiveAction() {
618	>	protected void realCompute() {
619	>	AsyncFib f = new AsyncFib(8);
620	>	assertTrue(f.cancel(true));
621		try {
482	–	AsyncFib f = new AsyncFib(8);
483	–	f.cancel(true);
622		f.invoke();
623		shouldThrow();
624		} catch (CancellationException success) {
625	+	checkCancelled(f);
626		}
627		}};
628		testInvokeOnPool(mainPool(), a);
#	Line 493 | Line 632 | public class ForkJoinTaskTest extends JS
632		* join of a forked task throws exception when task cancelled
633		*/
634		public void testCancelledForkJoin() {
635	<	RecursiveAction a = new RecursiveAction() {
636	<	public void compute() {
635	>	RecursiveAction a = new CheckedRecursiveAction() {
636	>	protected void realCompute() {
637	>	AsyncFib f = new AsyncFib(8);
638	>	assertTrue(f.cancel(true));
639	>	assertSame(f, f.fork());
640		try {
499	–	AsyncFib f = new AsyncFib(8);
500	–	f.cancel(true);
501	–	f.fork();
641		f.join();
642		shouldThrow();
643		} catch (CancellationException success) {
644	+	checkCancelled(f);
645		}
646		}};
647		testInvokeOnPool(mainPool(), a);
#	Line 511 | Line 651 | public class ForkJoinTaskTest extends JS
651		* get of a forked task throws exception when task cancelled
652		*/
653		public void testCancelledForkGet() {
654	<	RecursiveAction a = new RecursiveAction() {
655	<	public void compute() {
654	>	RecursiveAction a = new CheckedRecursiveAction() {
655	>	protected void realCompute() throws Exception {
656	>	AsyncFib f = new AsyncFib(8);
657	>	assertTrue(f.cancel(true));
658	>	assertSame(f, f.fork());
659		try {
517	–	AsyncFib f = new AsyncFib(8);
518	–	f.cancel(true);
519	–	f.fork();
660		f.get();
661		shouldThrow();
662		} catch (CancellationException success) {
663	<	} catch (Exception ex) {
524	<	unexpectedException(ex);
663	>	checkCancelled(f);
664		}
665		}};
666		testInvokeOnPool(mainPool(), a);
#	Line 530 | Line 669 | public class ForkJoinTaskTest extends JS
669		/**
670		* timed get of a forked task throws exception when task cancelled
671		*/
672	<	public void testCancelledForkTimedGet() {
673	<	RecursiveAction a = new RecursiveAction() {
674	<	public void compute() {
672	>	public void testCancelledForkTimedGet() throws Exception {
673	>	RecursiveAction a = new CheckedRecursiveAction() {
674	>	protected void realCompute() throws Exception {
675	>	AsyncFib f = new AsyncFib(8);
676	>	assertTrue(f.cancel(true));
677	>	assertSame(f, f.fork());
678		try {
679	<	AsyncFib f = new AsyncFib(8);
538	<	f.cancel(true);
539	<	f.fork();
540	<	f.get(LONG_DELAY_MS, TimeUnit.MILLISECONDS);
679	>	f.get(LONG_DELAY_MS, MILLISECONDS);
680		shouldThrow();
681		} catch (CancellationException success) {
682	<	} catch (Exception ex) {
544	<	unexpectedException(ex);
682	>	checkCancelled(f);
683		}
684		}};
685		testInvokeOnPool(mainPool(), a);
#	Line 551 | Line 689 | public class ForkJoinTaskTest extends JS
689		* quietlyJoin of a forked task returns when task cancelled
690		*/
691		public void testCancelledForkQuietlyJoin() {
692	<	RecursiveAction a = new RecursiveAction() {
693	<	public void compute() {
692	>	RecursiveAction a = new CheckedRecursiveAction() {
693	>	protected void realCompute() {
694		AsyncFib f = new AsyncFib(8);
695	<	f.cancel(true);
696	<	f.fork();
695	>	assertTrue(f.cancel(true));
696	>	assertSame(f, f.fork());
697		f.quietlyJoin();
698	<	threadAssertTrue(f.isDone());
561	<	threadAssertTrue(f.isCompletedAbnormally());
562	<	threadAssertTrue(f.getException() instanceof CancellationException);
698	>	checkCancelled(f);
699		}};
700		testInvokeOnPool(mainPool(), a);
701		}
#	Line 569 | Line 705 | public class ForkJoinTaskTest extends JS
705		*/
706		public void testGetPool() {
707		final ForkJoinPool mainPool = mainPool();
708	<	RecursiveAction a = new RecursiveAction() {
709	<	public void compute() {
710	<	threadAssertTrue(getPool() == mainPool);
708	>	RecursiveAction a = new CheckedRecursiveAction() {
709	>	protected void realCompute() {
710	>	assertSame(mainPool, getPool());
711		}};
712		testInvokeOnPool(mainPool, a);
713		}
#	Line 580 | Line 716 | public class ForkJoinTaskTest extends JS
716		* getPool of non-FJ task returns null
717		*/
718		public void testGetPool2() {
719	<	RecursiveAction a = new RecursiveAction() {
720	<	public void compute() {
721	<	threadAssertTrue(getPool() == null);
719	>	RecursiveAction a = new CheckedRecursiveAction() {
720	>	protected void realCompute() {
721	>	assertNull(getPool());
722		}};
723	<	a.invoke();
723	>	assertNull(a.invoke());
724		}
725
726		/**
727		* inForkJoinPool of executing task returns true
728		*/
729		public void testInForkJoinPool() {
730	<	RecursiveAction a = new RecursiveAction() {
731	<	public void compute() {
732	<	threadAssertTrue(inForkJoinPool());
730	>	RecursiveAction a = new CheckedRecursiveAction() {
731	>	protected void realCompute() {
732	>	assertTrue(inForkJoinPool());
733		}};
734		testInvokeOnPool(mainPool(), a);
735		}
#	Line 602 | Line 738 | public class ForkJoinTaskTest extends JS
738		* inForkJoinPool of non-FJ task returns false
739		*/
740		public void testInForkJoinPool2() {
741	<	RecursiveAction a = new RecursiveAction() {
742	<	public void compute() {
743	<	threadAssertTrue(!inForkJoinPool());
741	>	RecursiveAction a = new CheckedRecursiveAction() {
742	>	protected void realCompute() {
743	>	assertFalse(inForkJoinPool());
744		}};
745	<	a.invoke();
745	>	assertNull(a.invoke());
746		}
747
748		/**
749		* setRawResult(null) succeeds
750		*/
751		public void testSetRawResult() {
752	<	RecursiveAction a = new RecursiveAction() {
753	<	public void compute() {
752	>	RecursiveAction a = new CheckedRecursiveAction() {
753	>	protected void realCompute() {
754		setRawResult(null);
755	+	assertNull(getRawResult());
756		}};
757	<	a.invoke();
757	>	assertNull(a.invoke());
758		}
759
760		/**
761		* invoke task throws exception after invoking completeExceptionally
762		*/
763		public void testCompleteExceptionally() {
764	<	RecursiveAction a = new RecursiveAction() {
765	<	public void compute() {
764	>	RecursiveAction a = new CheckedRecursiveAction() {
765	>	protected void realCompute() {
766	>	AsyncFib f = new AsyncFib(8);
767	>	f.completeExceptionally(new FJException());
768		try {
630	–	AsyncFib f = new AsyncFib(8);
631	–	f.completeExceptionally(new FJException());
769		f.invoke();
770		shouldThrow();
771		} catch (FJException success) {
772	+	checkCompletedAbnormally(f, success);
773	+	}
774	+	}};
775	+	testInvokeOnPool(mainPool(), a);
776	+	}
777	+
778	+	/**
779	+	* completeExceptionally(null) surprisingly has the same effect as
780	+	* completeExceptionally(new RuntimeException())
781	+	*/
782	+	public void testCompleteExceptionally_null() {
783	+	RecursiveAction a = new CheckedRecursiveAction() {
784	+	protected void realCompute() {
785	+	AsyncFib f = new AsyncFib(8);
786	+	f.completeExceptionally(null);
787	+	try {
788	+	f.invoke();
789	+	shouldThrow();
790	+	} catch (RuntimeException success) {
791	+	assertSame(success.getClass(), RuntimeException.class);
792	+	assertNull(success.getCause());
793	+	checkCompletedAbnormally(f, success);
794		}
795		}};
796		testInvokeOnPool(mainPool(), a);
#	Line 641 | Line 800 | public class ForkJoinTaskTest extends JS
800		* invokeAll(t1, t2) invokes all task arguments
801		*/
802		public void testInvokeAll2() {
803	<	RecursiveAction a = new RecursiveAction() {
804	<	public void compute() {
803	>	RecursiveAction a = new CheckedRecursiveAction() {
804	>	protected void realCompute() {
805		AsyncFib f = new AsyncFib(8);
806		AsyncFib g = new AsyncFib(9);
807		invokeAll(f, g);
808	<	threadAssertTrue(f.isDone());
809	<	threadAssertTrue(f.number == 21);
810	<	threadAssertTrue(g.isDone());
811	<	threadAssertTrue(g.number == 34);
808	>	assertEquals(21, f.number);
809	>	assertEquals(34, g.number);
810	>	checkCompletedNormally(f);
811	>	checkCompletedNormally(g);
812		}};
813		testInvokeOnPool(mainPool(), a);
814		}
#	Line 658 | Line 817 | public class ForkJoinTaskTest extends JS
817		* invokeAll(tasks) with 1 argument invokes task
818		*/
819		public void testInvokeAll1() {
820	<	RecursiveAction a = new RecursiveAction() {
821	<	public void compute() {
820	>	RecursiveAction a = new CheckedRecursiveAction() {
821	>	protected void realCompute() {
822		AsyncFib f = new AsyncFib(8);
823		invokeAll(f);
824	<	threadAssertTrue(f.isDone());
825	<	threadAssertTrue(f.number == 21);
824	>	checkCompletedNormally(f);
825	>	assertEquals(21, f.number);
826		}};
827		testInvokeOnPool(mainPool(), a);
828		}
#	Line 672 | Line 831 | public class ForkJoinTaskTest extends JS
831		* invokeAll(tasks) with > 2 argument invokes tasks
832		*/
833		public void testInvokeAll3() {
834	<	RecursiveAction a = new RecursiveAction() {
835	<	public void compute() {
834	>	RecursiveAction a = new CheckedRecursiveAction() {
835	>	protected void realCompute() {
836		AsyncFib f = new AsyncFib(8);
837		AsyncFib g = new AsyncFib(9);
838		AsyncFib h = new AsyncFib(7);
839		invokeAll(f, g, h);
840	<	threadAssertTrue(f.isDone());
841	<	threadAssertTrue(f.number == 21);
842	<	threadAssertTrue(g.isDone());
843	<	threadAssertTrue(g.number == 34);
844	<	threadAssertTrue(h.isDone());
845	<	threadAssertTrue(h.number == 13);
840	>	assertEquals(21, f.number);
841	>	assertEquals(34, g.number);
842	>	assertEquals(13, h.number);
843	>	checkCompletedNormally(f);
844	>	checkCompletedNormally(g);
845	>	checkCompletedNormally(h);
846		}};
847		testInvokeOnPool(mainPool(), a);
848		}
#	Line 692 | Line 851 | public class ForkJoinTaskTest extends JS
851		* invokeAll(collection) invokes all tasks in the collection
852		*/
853		public void testInvokeAllCollection() {
854	<	RecursiveAction a = new RecursiveAction() {
855	<	public void compute() {
854	>	RecursiveAction a = new CheckedRecursiveAction() {
855	>	protected void realCompute() {
856		AsyncFib f = new AsyncFib(8);
857		AsyncFib g = new AsyncFib(9);
858		AsyncFib h = new AsyncFib(7);
#	Line 702 | Line 861 | public class ForkJoinTaskTest extends JS
861		set.add(g);
862		set.add(h);
863		invokeAll(set);
864	<	threadAssertTrue(f.isDone());
865	<	threadAssertTrue(f.number == 21);
866	<	threadAssertTrue(g.isDone());
867	<	threadAssertTrue(g.number == 34);
868	<	threadAssertTrue(h.isDone());
869	<	threadAssertTrue(h.number == 13);
864	>	assertEquals(21, f.number);
865	>	assertEquals(34, g.number);
866	>	assertEquals(13, h.number);
867	>	checkCompletedNormally(f);
868	>	checkCompletedNormally(g);
869	>	checkCompletedNormally(h);
870		}};
871		testInvokeOnPool(mainPool(), a);
872		}
873
715	–
874		/**
875		* invokeAll(tasks) with any null task throws NPE
876		*/
877		public void testInvokeAllNPE() {
878	<	RecursiveAction a = new RecursiveAction() {
879	<	public void compute() {
878	>	RecursiveAction a = new CheckedRecursiveAction() {
879	>	protected void realCompute() {
880	>	AsyncFib f = new AsyncFib(8);
881	>	AsyncFib g = new AsyncFib(9);
882	>	AsyncFib h = null;
883		try {
723	–	AsyncFib f = new AsyncFib(8);
724	–	AsyncFib g = new AsyncFib(9);
725	–	AsyncFib h = null;
884		invokeAll(f, g, h);
885		shouldThrow();
886	<	} catch (NullPointerException success) {
729	<	}
886	>	} catch (NullPointerException success) {}
887		}};
888		testInvokeOnPool(mainPool(), a);
889		}
#	Line 735 | Line 892 | public class ForkJoinTaskTest extends JS
892		* invokeAll(t1, t2) throw exception if any task does
893		*/
894		public void testAbnormalInvokeAll2() {
895	<	RecursiveAction a = new RecursiveAction() {
896	<	public void compute() {
895	>	RecursiveAction a = new CheckedRecursiveAction() {
896	>	protected void realCompute() {
897	>	AsyncFib f = new AsyncFib(8);
898	>	FailingAsyncFib g = new FailingAsyncFib(9);
899	>	ForkJoinTask[] tasks = { f, g };
900	>	shuffle(tasks);
901		try {
902	<	AsyncFib f = new AsyncFib(8);
742	<	FailingAsyncFib g = new FailingAsyncFib(9);
743	<	invokeAll(f, g);
902	>	invokeAll(tasks);
903		shouldThrow();
904		} catch (FJException success) {
905	+	checkCompletedAbnormally(g, success);
906		}
907		}};
908		testInvokeOnPool(mainPool(), a);
#	Line 752 | Line 912 | public class ForkJoinTaskTest extends JS
912		* invokeAll(tasks) with 1 argument throws exception if task does
913		*/
914		public void testAbnormalInvokeAll1() {
915	<	RecursiveAction a = new RecursiveAction() {
916	<	public void compute() {
915	>	RecursiveAction a = new CheckedRecursiveAction() {
916	>	protected void realCompute() {
917	>	FailingAsyncFib g = new FailingAsyncFib(9);
918		try {
758	–	FailingAsyncFib g = new FailingAsyncFib(9);
919		invokeAll(g);
920		shouldThrow();
921		} catch (FJException success) {
922	+	checkCompletedAbnormally(g, success);
923		}
924		}};
925		testInvokeOnPool(mainPool(), a);
#	Line 768 | Line 929 | public class ForkJoinTaskTest extends JS
929		* invokeAll(tasks) with > 2 argument throws exception if any task does
930		*/
931		public void testAbnormalInvokeAll3() {
932	<	RecursiveAction a = new RecursiveAction() {
933	<	public void compute() {
932	>	RecursiveAction a = new CheckedRecursiveAction() {
933	>	protected void realCompute() {
934	>	AsyncFib f = new AsyncFib(8);
935	>	FailingAsyncFib g = new FailingAsyncFib(9);
936	>	AsyncFib h = new AsyncFib(7);
937	>	ForkJoinTask[] tasks = { f, g, h };
938	>	shuffle(tasks);
939		try {
940	<	AsyncFib f = new AsyncFib(8);
775	<	FailingAsyncFib g = new FailingAsyncFib(9);
776	<	AsyncFib h = new AsyncFib(7);
777	<	invokeAll(f, g, h);
940	>	invokeAll(tasks);
941		shouldThrow();
942		} catch (FJException success) {
943	+	checkCompletedAbnormally(g, success);
944		}
945		}};
946		testInvokeOnPool(mainPool(), a);
947		}
948
949		/**
950	<	* invokeAll(collection)  throws exception if any task does
950	>	* invokeAll(collection) throws exception if any task does
951		*/
952		public void testAbnormalInvokeAllCollection() {
953	<	RecursiveAction a = new RecursiveAction() {
954	<	public void compute() {
953	>	RecursiveAction a = new CheckedRecursiveAction() {
954	>	protected void realCompute() {
955	>	FailingAsyncFib f = new FailingAsyncFib(8);
956	>	AsyncFib g = new AsyncFib(9);
957	>	AsyncFib h = new AsyncFib(7);
958	>	ForkJoinTask[] tasks = { f, g, h };
959	>	shuffle(tasks);
960		try {
961	<	FailingAsyncFib f = new FailingAsyncFib(8);
793	<	AsyncFib g = new AsyncFib(9);
794	<	AsyncFib h = new AsyncFib(7);
795	<	HashSet set = new HashSet();
796	<	set.add(f);
797	<	set.add(g);
798	<	set.add(h);
799	<	invokeAll(set);
961	>	invokeAll(Arrays.asList(tasks));
962		shouldThrow();
963		} catch (FJException success) {
964	+	checkCompletedAbnormally(f, success);
965		}
966		}};
967		testInvokeOnPool(mainPool(), a);
#	Line 809 | Line 972 | public class ForkJoinTaskTest extends JS
972		* and suppresses execution
973		*/
974		public void testTryUnfork() {
975	<	RecursiveAction a = new RecursiveAction() {
976	<	public void compute() {
975	>	RecursiveAction a = new CheckedRecursiveAction() {
976	>	protected void realCompute() {
977		AsyncFib g = new AsyncFib(9);
978	<	g.fork();
978	>	assertSame(g, g.fork());
979		AsyncFib f = new AsyncFib(8);
980	<	f.fork();
981	<	threadAssertTrue(f.tryUnfork());
980	>	assertSame(f, f.fork());
981	>	assertTrue(f.tryUnfork());
982		helpQuiesce();
983	<	threadAssertFalse(f.isDone());
984	<	threadAssertTrue(g.isDone());
983	>	checkNotDone(f);
984	>	checkCompletedNormally(g);
985		}};
986		testInvokeOnPool(singletonPool(), a);
987		}
#	Line 828 | Line 991 | public class ForkJoinTaskTest extends JS
991		* there are more tasks than threads
992		*/
993		public void testGetSurplusQueuedTaskCount() {
994	<	RecursiveAction a = new RecursiveAction() {
995	<	public void compute() {
994	>	RecursiveAction a = new CheckedRecursiveAction() {
995	>	protected void realCompute() {
996		AsyncFib h = new AsyncFib(7);
997	<	h.fork();
997	>	assertSame(h, h.fork());
998		AsyncFib g = new AsyncFib(9);
999	<	g.fork();
999	>	assertSame(g, g.fork());
1000		AsyncFib f = new AsyncFib(8);
1001	<	f.fork();
1002	<	threadAssertTrue(getSurplusQueuedTaskCount() > 0);
1001	>	assertSame(f, f.fork());
1002	>	assertTrue(getSurplusQueuedTaskCount() > 0);
1003		helpQuiesce();
1004	+	assertEquals(0, getSurplusQueuedTaskCount());
1005	+	checkCompletedNormally(f);
1006	+	checkCompletedNormally(g);
1007	+	checkCompletedNormally(h);
1008		}};
1009		testInvokeOnPool(singletonPool(), a);
1010		}
#	Line 846 | Line 1013 | public class ForkJoinTaskTest extends JS
1013		* peekNextLocalTask returns most recent unexecuted task.
1014		*/
1015		public void testPeekNextLocalTask() {
1016	<	RecursiveAction a = new RecursiveAction() {
1017	<	public void compute() {
1016	>	RecursiveAction a = new CheckedRecursiveAction() {
1017	>	protected void realCompute() {
1018		AsyncFib g = new AsyncFib(9);
1019	<	g.fork();
1019	>	assertSame(g, g.fork());
1020		AsyncFib f = new AsyncFib(8);
1021	<	f.fork();
1022	<	threadAssertTrue(peekNextLocalTask() == f);
1023	<	f.join();
1024	<	threadAssertTrue(f.isDone());
1021	>	assertSame(f, f.fork());
1022	>	assertSame(f, peekNextLocalTask());
1023	>	assertNull(f.join());
1024	>	checkCompletedNormally(f);
1025		helpQuiesce();
1026	+	checkCompletedNormally(g);
1027		}};
1028		testInvokeOnPool(singletonPool(), a);
1029		}
1030
1031		/**
1032	<	* pollNextLocalTask returns most recent unexecuted task
1033	<	* without executing it
1032	>	* pollNextLocalTask returns most recent unexecuted task without
1033	>	* executing it
1034		*/
1035		public void testPollNextLocalTask() {
1036	<	RecursiveAction a = new RecursiveAction() {
1037	<	public void compute() {
1036	>	RecursiveAction a = new CheckedRecursiveAction() {
1037	>	protected void realCompute() {
1038		AsyncFib g = new AsyncFib(9);
1039	<	g.fork();
1039	>	assertSame(g, g.fork());
1040		AsyncFib f = new AsyncFib(8);
1041	<	f.fork();
1042	<	threadAssertTrue(pollNextLocalTask() == f);
1041	>	assertSame(f, f.fork());
1042	>	assertSame(f, pollNextLocalTask());
1043		helpQuiesce();
1044	<	threadAssertFalse(f.isDone());
1044	>	checkNotDone(f);
1045	>	assertEquals(34, g.number);
1046	>	checkCompletedNormally(g);
1047		}};
1048		testInvokeOnPool(singletonPool(), a);
1049		}
1050
1051		/**
1052	<	* pollTask returns an unexecuted task
883	<	* without executing it
1052	>	* pollTask returns an unexecuted task without executing it
1053		*/
1054		public void testPollTask() {
1055	<	RecursiveAction a = new RecursiveAction() {
1056	<	public void compute() {
1055	>	RecursiveAction a = new CheckedRecursiveAction() {
1056	>	protected void realCompute() {
1057		AsyncFib g = new AsyncFib(9);
1058	<	g.fork();
1058	>	assertSame(g, g.fork());
1059		AsyncFib f = new AsyncFib(8);
1060	<	f.fork();
1061	<	threadAssertTrue(pollTask() == f);
1060	>	assertSame(f, f.fork());
1061	>	assertSame(f, pollTask());
1062		helpQuiesce();
1063	<	threadAssertFalse(f.isDone());
1064	<	threadAssertTrue(g.isDone());
1063	>	checkNotDone(f);
1064	>	checkCompletedNormally(g);
1065		}};
1066		testInvokeOnPool(singletonPool(), a);
1067		}
#	Line 901 | Line 1070 | public class ForkJoinTaskTest extends JS
1070		* peekNextLocalTask returns least recent unexecuted task in async mode
1071		*/
1072		public void testPeekNextLocalTaskAsync() {
1073	<	RecursiveAction a = new RecursiveAction() {
1074	<	public void compute() {
1073	>	RecursiveAction a = new CheckedRecursiveAction() {
1074	>	protected void realCompute() {
1075		AsyncFib g = new AsyncFib(9);
1076	<	g.fork();
1076	>	assertSame(g, g.fork());
1077		AsyncFib f = new AsyncFib(8);
1078	<	f.fork();
1079	<	threadAssertTrue(peekNextLocalTask() == g);
1080	<	f.join();
1078	>	assertSame(f, f.fork());
1079	>	assertSame(g, peekNextLocalTask());
1080	>	assertNull(f.join());
1081		helpQuiesce();
1082	<	threadAssertTrue(f.isDone());
1082	>	checkCompletedNormally(f);
1083	>	assertEquals(34, g.number);
1084	>	checkCompletedNormally(g);
1085		}};
1086		testInvokeOnPool(asyncSingletonPool(), a);
1087		}
1088
1089		/**
1090	<	* pollNextLocalTask returns least recent unexecuted task
1091	<	* without executing it, in async mode
1090	>	* pollNextLocalTask returns least recent unexecuted task without
1091	>	* executing it, in async mode
1092		*/
1093		public void testPollNextLocalTaskAsync() {
1094	<	RecursiveAction a = new RecursiveAction() {
1095	<	public void compute() {
1094	>	RecursiveAction a = new CheckedRecursiveAction() {
1095	>	protected void realCompute() {
1096		AsyncFib g = new AsyncFib(9);
1097	<	g.fork();
1097	>	assertSame(g, g.fork());
1098		AsyncFib f = new AsyncFib(8);
1099	<	f.fork();
1100	<	threadAssertTrue(pollNextLocalTask() == g);
1099	>	assertSame(f, f.fork());
1100	>	assertSame(g, pollNextLocalTask());
1101		helpQuiesce();
1102	<	threadAssertTrue(f.isDone());
1103	<	threadAssertFalse(g.isDone());
1102	>	assertEquals(21, f.number);
1103	>	checkCompletedNormally(f);
1104	>	checkNotDone(g);
1105		}};
1106		testInvokeOnPool(asyncSingletonPool(), a);
1107		}
1108
1109		/**
1110	<	* pollTask returns an unexecuted task
1111	<	* without executing it, in async mode
1110	>	* pollTask returns an unexecuted task without executing it, in
1111	>	* async mode
1112		*/
1113		public void testPollTaskAsync() {
1114	<	RecursiveAction a = new RecursiveAction() {
1115	<	public void compute() {
1114	>	RecursiveAction a = new CheckedRecursiveAction() {
1115	>	protected void realCompute() {
1116		AsyncFib g = new AsyncFib(9);
1117	<	g.fork();
1117	>	assertSame(g, g.fork());
1118		AsyncFib f = new AsyncFib(8);
1119	<	f.fork();
1120	<	threadAssertTrue(pollTask() == g);
1119	>	assertSame(f, f.fork());
1120	>	assertSame(g, pollTask());
1121		helpQuiesce();
1122	<	threadAssertTrue(f.isDone());
1123	<	threadAssertFalse(g.isDone());
1122	>	assertEquals(21, f.number);
1123	>	checkCompletedNormally(f);
1124	>	checkNotDone(g);
1125		}};
1126		testInvokeOnPool(asyncSingletonPool(), a);
1127		}
1128	+
1129	+	// versions for singleton pools
1130	+
1131	+	/**
1132	+	* invoke returns when task completes normally.
1133	+	* isCompletedAbnormally and isCancelled return false for normally
1134	+	* completed tasks; getRawResult returns null.
1135	+	*/
1136	+	public void testInvokeSingleton() {
1137	+	RecursiveAction a = new CheckedRecursiveAction() {
1138	+	protected void realCompute() {
1139	+	AsyncFib f = new AsyncFib(8);
1140	+	assertNull(f.invoke());
1141	+	assertEquals(21, f.number);
1142	+	checkCompletedNormally(f);
1143	+	}};
1144	+	testInvokeOnPool(singletonPool(), a);
1145	+	}
1146	+
1147	+	/**
1148	+	* quietlyInvoke task returns when task completes normally.
1149	+	* isCompletedAbnormally and isCancelled return false for normally
1150	+	* completed tasks
1151	+	*/
1152	+	public void testQuietlyInvokeSingleton() {
1153	+	RecursiveAction a = new CheckedRecursiveAction() {
1154	+	protected void realCompute() {
1155	+	AsyncFib f = new AsyncFib(8);
1156	+	f.quietlyInvoke();
1157	+	assertEquals(21, f.number);
1158	+	checkCompletedNormally(f);
1159	+	}};
1160	+	testInvokeOnPool(singletonPool(), a);
1161	+	}
1162	+
1163	+	/**
1164	+	* join of a forked task returns when task completes
1165	+	*/
1166	+	public void testForkJoinSingleton() {
1167	+	RecursiveAction a = new CheckedRecursiveAction() {
1168	+	protected void realCompute() {
1169	+	AsyncFib f = new AsyncFib(8);
1170	+	assertSame(f, f.fork());
1171	+	assertNull(f.join());
1172	+	assertEquals(21, f.number);
1173	+	checkCompletedNormally(f);
1174	+	}};
1175	+	testInvokeOnPool(singletonPool(), a);
1176	+	}
1177	+
1178	+	/**
1179	+	* get of a forked task returns when task completes
1180	+	*/
1181	+	public void testForkGetSingleton() {
1182	+	RecursiveAction a = new CheckedRecursiveAction() {
1183	+	protected void realCompute() throws Exception {
1184	+	AsyncFib f = new AsyncFib(8);
1185	+	assertSame(f, f.fork());
1186	+	assertNull(f.get());
1187	+	assertEquals(21, f.number);
1188	+	checkCompletedNormally(f);
1189	+	}};
1190	+	testInvokeOnPool(singletonPool(), a);
1191	+	}
1192	+
1193	+	/**
1194	+	* timed get of a forked task returns when task completes
1195	+	*/
1196	+	public void testForkTimedGetSingleton() {
1197	+	RecursiveAction a = new CheckedRecursiveAction() {
1198	+	protected void realCompute() throws Exception {
1199	+	AsyncFib f = new AsyncFib(8);
1200	+	assertSame(f, f.fork());
1201	+	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
1202	+	assertEquals(21, f.number);
1203	+	checkCompletedNormally(f);
1204	+	}};
1205	+	testInvokeOnPool(singletonPool(), a);
1206	+	}
1207	+
1208	+	/**
1209	+	* timed get with null time unit throws NPE
1210	+	*/
1211	+	public void testForkTimedGetNPESingleton() {
1212	+	RecursiveAction a = new CheckedRecursiveAction() {
1213	+	protected void realCompute() throws Exception {
1214	+	AsyncFib f = new AsyncFib(8);
1215	+	assertSame(f, f.fork());
1216	+	try {
1217	+	f.get(5L, null);
1218	+	shouldThrow();
1219	+	} catch (NullPointerException success) {}
1220	+	}};
1221	+	testInvokeOnPool(singletonPool(), a);
1222	+	}
1223	+
1224	+	/**
1225	+	* quietlyJoin of a forked task returns when task completes
1226	+	*/
1227	+	public void testForkQuietlyJoinSingleton() {
1228	+	RecursiveAction a = new CheckedRecursiveAction() {
1229	+	protected void realCompute() {
1230	+	AsyncFib f = new AsyncFib(8);
1231	+	assertSame(f, f.fork());
1232	+	f.quietlyJoin();
1233	+	assertEquals(21, f.number);
1234	+	checkCompletedNormally(f);
1235	+	}};
1236	+	testInvokeOnPool(singletonPool(), a);
1237	+	}
1238	+
1239	+	/**
1240	+	* helpQuiesce returns when tasks are complete.
1241	+	* getQueuedTaskCount returns 0 when quiescent
1242	+	*/
1243	+	public void testForkHelpQuiesceSingleton() {
1244	+	RecursiveAction a = new CheckedRecursiveAction() {
1245	+	protected void realCompute() {
1246	+	AsyncFib f = new AsyncFib(8);
1247	+	assertSame(f, f.fork());
1248	+	helpQuiesce();
1249	+	assertEquals(0, getQueuedTaskCount());
1250	+	assertEquals(21, f.number);
1251	+	checkCompletedNormally(f);
1252	+	}};
1253	+	testInvokeOnPool(singletonPool(), a);
1254	+	}
1255	+
1256	+	/**
1257	+	* invoke task throws exception when task completes abnormally
1258	+	*/
1259	+	public void testAbnormalInvokeSingleton() {
1260	+	RecursiveAction a = new CheckedRecursiveAction() {
1261	+	protected void realCompute() {
1262	+	FailingAsyncFib f = new FailingAsyncFib(8);
1263	+	try {
1264	+	f.invoke();
1265	+	shouldThrow();
1266	+	} catch (FJException success) {
1267	+	checkCompletedAbnormally(f, success);
1268	+	}
1269	+	}};
1270	+	testInvokeOnPool(singletonPool(), a);
1271	+	}
1272	+
1273	+	/**
1274	+	* quietlyInvoke task returns when task completes abnormally
1275	+	*/
1276	+	public void testAbnormalQuietlyInvokeSingleton() {
1277	+	RecursiveAction a = new CheckedRecursiveAction() {
1278	+	protected void realCompute() {
1279	+	FailingAsyncFib f = new FailingAsyncFib(8);
1280	+	f.quietlyInvoke();
1281	+	assertTrue(f.getException() instanceof FJException);
1282	+	checkCompletedAbnormally(f, f.getException());
1283	+	}};
1284	+	testInvokeOnPool(singletonPool(), a);
1285	+	}
1286	+
1287	+	/**
1288	+	* join of a forked task throws exception when task completes abnormally
1289	+	*/
1290	+	public void testAbnormalForkJoinSingleton() {
1291	+	RecursiveAction a = new CheckedRecursiveAction() {
1292	+	protected void realCompute() {
1293	+	FailingAsyncFib f = new FailingAsyncFib(8);
1294	+	assertSame(f, f.fork());
1295	+	try {
1296	+	f.join();
1297	+	shouldThrow();
1298	+	} catch (FJException success) {
1299	+	checkCompletedAbnormally(f, success);
1300	+	}
1301	+	}};
1302	+	testInvokeOnPool(singletonPool(), a);
1303	+	}
1304	+
1305	+	/**
1306	+	* get of a forked task throws exception when task completes abnormally
1307	+	*/
1308	+	public void testAbnormalForkGetSingleton() {
1309	+	RecursiveAction a = new CheckedRecursiveAction() {
1310	+	protected void realCompute() throws Exception {
1311	+	FailingAsyncFib f = new FailingAsyncFib(8);
1312	+	assertSame(f, f.fork());
1313	+	try {
1314	+	f.get();
1315	+	shouldThrow();
1316	+	} catch (ExecutionException success) {
1317	+	Throwable cause = success.getCause();
1318	+	assertTrue(cause instanceof FJException);
1319	+	checkCompletedAbnormally(f, cause);
1320	+	}
1321	+	}};
1322	+	testInvokeOnPool(singletonPool(), a);
1323	+	}
1324	+
1325	+	/**
1326	+	* timed get of a forked task throws exception when task completes abnormally
1327	+	*/
1328	+	public void testAbnormalForkTimedGetSingleton() {
1329	+	RecursiveAction a = new CheckedRecursiveAction() {
1330	+	protected void realCompute() throws Exception {
1331	+	FailingAsyncFib f = new FailingAsyncFib(8);
1332	+	assertSame(f, f.fork());
1333	+	try {
1334	+	f.get(LONG_DELAY_MS, MILLISECONDS);
1335	+	shouldThrow();
1336	+	} catch (ExecutionException success) {
1337	+	Throwable cause = success.getCause();
1338	+	assertTrue(cause instanceof FJException);
1339	+	checkCompletedAbnormally(f, cause);
1340	+	}
1341	+	}};
1342	+	testInvokeOnPool(singletonPool(), a);
1343	+	}
1344	+
1345	+	/**
1346	+	* quietlyJoin of a forked task returns when task completes abnormally
1347	+	*/
1348	+	public void testAbnormalForkQuietlyJoinSingleton() {
1349	+	RecursiveAction a = new CheckedRecursiveAction() {
1350	+	protected void realCompute() {
1351	+	FailingAsyncFib f = new FailingAsyncFib(8);
1352	+	assertSame(f, f.fork());
1353	+	f.quietlyJoin();
1354	+	assertTrue(f.getException() instanceof FJException);
1355	+	checkCompletedAbnormally(f, f.getException());
1356	+	}};
1357	+	testInvokeOnPool(singletonPool(), a);
1358	+	}
1359	+
1360	+	/**
1361	+	* invoke task throws exception when task cancelled
1362	+	*/
1363	+	public void testCancelledInvokeSingleton() {
1364	+	RecursiveAction a = new CheckedRecursiveAction() {
1365	+	protected void realCompute() {
1366	+	AsyncFib f = new AsyncFib(8);
1367	+	assertTrue(f.cancel(true));
1368	+	try {
1369	+	f.invoke();
1370	+	shouldThrow();
1371	+	} catch (CancellationException success) {
1372	+	checkCancelled(f);
1373	+	}
1374	+	}};
1375	+	testInvokeOnPool(singletonPool(), a);
1376	+	}
1377	+
1378	+	/**
1379	+	* join of a forked task throws exception when task cancelled
1380	+	*/
1381	+	public void testCancelledForkJoinSingleton() {
1382	+	RecursiveAction a = new CheckedRecursiveAction() {
1383	+	protected void realCompute() {
1384	+	AsyncFib f = new AsyncFib(8);
1385	+	assertTrue(f.cancel(true));
1386	+	assertSame(f, f.fork());
1387	+	try {
1388	+	f.join();
1389	+	shouldThrow();
1390	+	} catch (CancellationException success) {
1391	+	checkCancelled(f);
1392	+	}
1393	+	}};
1394	+	testInvokeOnPool(singletonPool(), a);
1395	+	}
1396	+
1397	+	/**
1398	+	* get of a forked task throws exception when task cancelled
1399	+	*/
1400	+	public void testCancelledForkGetSingleton() {
1401	+	RecursiveAction a = new CheckedRecursiveAction() {
1402	+	protected void realCompute() throws Exception {
1403	+	AsyncFib f = new AsyncFib(8);
1404	+	assertTrue(f.cancel(true));
1405	+	assertSame(f, f.fork());
1406	+	try {
1407	+	f.get();
1408	+	shouldThrow();
1409	+	} catch (CancellationException success) {
1410	+	checkCancelled(f);
1411	+	}
1412	+	}};
1413	+	testInvokeOnPool(singletonPool(), a);
1414	+	}
1415	+
1416	+	/**
1417	+	* timed get of a forked task throws exception when task cancelled
1418	+	*/
1419	+	public void testCancelledForkTimedGetSingleton() throws Exception {
1420	+	RecursiveAction a = new CheckedRecursiveAction() {
1421	+	protected void realCompute() throws Exception {
1422	+	AsyncFib f = new AsyncFib(8);
1423	+	assertTrue(f.cancel(true));
1424	+	assertSame(f, f.fork());
1425	+	try {
1426	+	f.get(LONG_DELAY_MS, MILLISECONDS);
1427	+	shouldThrow();
1428	+	} catch (CancellationException success) {
1429	+	checkCancelled(f);
1430	+	}
1431	+	}};
1432	+	testInvokeOnPool(singletonPool(), a);
1433	+	}
1434	+
1435	+	/**
1436	+	* quietlyJoin of a forked task returns when task cancelled
1437	+	*/
1438	+	public void testCancelledForkQuietlyJoinSingleton() {
1439	+	RecursiveAction a = new CheckedRecursiveAction() {
1440	+	protected void realCompute() {
1441	+	AsyncFib f = new AsyncFib(8);
1442	+	assertTrue(f.cancel(true));
1443	+	assertSame(f, f.fork());
1444	+	f.quietlyJoin();
1445	+	checkCancelled(f);
1446	+	}};
1447	+	testInvokeOnPool(singletonPool(), a);
1448	+	}
1449	+
1450	+	/**
1451	+	* invoke task throws exception after invoking completeExceptionally
1452	+	*/
1453	+	public void testCompleteExceptionallySingleton() {
1454	+	RecursiveAction a = new CheckedRecursiveAction() {
1455	+	protected void realCompute() {
1456	+	AsyncFib f = new AsyncFib(8);
1457	+	f.completeExceptionally(new FJException());
1458	+	try {
1459	+	f.invoke();
1460	+	shouldThrow();
1461	+	} catch (FJException success) {
1462	+	checkCompletedAbnormally(f, success);
1463	+	}
1464	+	}};
1465	+	testInvokeOnPool(singletonPool(), a);
1466	+	}
1467	+
1468	+	/**
1469	+	* invokeAll(t1, t2) invokes all task arguments
1470	+	*/
1471	+	public void testInvokeAll2Singleton() {
1472	+	RecursiveAction a = new CheckedRecursiveAction() {
1473	+	protected void realCompute() {
1474	+	AsyncFib f = new AsyncFib(8);
1475	+	AsyncFib g = new AsyncFib(9);
1476	+	invokeAll(f, g);
1477	+	assertEquals(21, f.number);
1478	+	assertEquals(34, g.number);
1479	+	checkCompletedNormally(f);
1480	+	checkCompletedNormally(g);
1481	+	}};
1482	+	testInvokeOnPool(singletonPool(), a);
1483	+	}
1484	+
1485	+	/**
1486	+	* invokeAll(tasks) with 1 argument invokes task
1487	+	*/
1488	+	public void testInvokeAll1Singleton() {
1489	+	RecursiveAction a = new CheckedRecursiveAction() {
1490	+	protected void realCompute() {
1491	+	AsyncFib f = new AsyncFib(8);
1492	+	invokeAll(f);
1493	+	checkCompletedNormally(f);
1494	+	assertEquals(21, f.number);
1495	+	}};
1496	+	testInvokeOnPool(singletonPool(), a);
1497	+	}
1498	+
1499	+	/**
1500	+	* invokeAll(tasks) with > 2 argument invokes tasks
1501	+	*/
1502	+	public void testInvokeAll3Singleton() {
1503	+	RecursiveAction a = new CheckedRecursiveAction() {
1504	+	protected void realCompute() {
1505	+	AsyncFib f = new AsyncFib(8);
1506	+	AsyncFib g = new AsyncFib(9);
1507	+	AsyncFib h = new AsyncFib(7);
1508	+	invokeAll(f, g, h);
1509	+	assertEquals(21, f.number);
1510	+	assertEquals(34, g.number);
1511	+	assertEquals(13, h.number);
1512	+	checkCompletedNormally(f);
1513	+	checkCompletedNormally(g);
1514	+	checkCompletedNormally(h);
1515	+	}};
1516	+	testInvokeOnPool(singletonPool(), a);
1517	+	}
1518	+
1519	+	/**
1520	+	* invokeAll(collection) invokes all tasks in the collection
1521	+	*/
1522	+	public void testInvokeAllCollectionSingleton() {
1523	+	RecursiveAction a = new CheckedRecursiveAction() {
1524	+	protected void realCompute() {
1525	+	AsyncFib f = new AsyncFib(8);
1526	+	AsyncFib g = new AsyncFib(9);
1527	+	AsyncFib h = new AsyncFib(7);
1528	+	HashSet set = new HashSet();
1529	+	set.add(f);
1530	+	set.add(g);
1531	+	set.add(h);
1532	+	invokeAll(set);
1533	+	assertEquals(21, f.number);
1534	+	assertEquals(34, g.number);
1535	+	assertEquals(13, h.number);
1536	+	checkCompletedNormally(f);
1537	+	checkCompletedNormally(g);
1538	+	checkCompletedNormally(h);
1539	+	}};
1540	+	testInvokeOnPool(singletonPool(), a);
1541	+	}
1542	+
1543	+	/**
1544	+	* invokeAll(tasks) with any null task throws NPE
1545	+	*/
1546	+	public void testInvokeAllNPESingleton() {
1547	+	RecursiveAction a = new CheckedRecursiveAction() {
1548	+	protected void realCompute() {
1549	+	AsyncFib f = new AsyncFib(8);
1550	+	AsyncFib g = new AsyncFib(9);
1551	+	AsyncFib h = null;
1552	+	try {
1553	+	invokeAll(f, g, h);
1554	+	shouldThrow();
1555	+	} catch (NullPointerException success) {}
1556	+	}};
1557	+	testInvokeOnPool(singletonPool(), a);
1558	+	}
1559	+
1560	+	/**
1561	+	* invokeAll(t1, t2) throw exception if any task does
1562	+	*/
1563	+	public void testAbnormalInvokeAll2Singleton() {
1564	+	RecursiveAction a = new CheckedRecursiveAction() {
1565	+	protected void realCompute() {
1566	+	AsyncFib f = new AsyncFib(8);
1567	+	FailingAsyncFib g = new FailingAsyncFib(9);
1568	+	ForkJoinTask[] tasks = { f, g };
1569	+	shuffle(tasks);
1570	+	try {
1571	+	invokeAll(tasks);
1572	+	shouldThrow();
1573	+	} catch (FJException success) {
1574	+	checkCompletedAbnormally(g, success);
1575	+	}
1576	+	}};
1577	+	testInvokeOnPool(singletonPool(), a);
1578	+	}
1579	+
1580	+	/**
1581	+	* invokeAll(tasks) with 1 argument throws exception if task does
1582	+	*/
1583	+	public void testAbnormalInvokeAll1Singleton() {
1584	+	RecursiveAction a = new CheckedRecursiveAction() {
1585	+	protected void realCompute() {
1586	+	FailingAsyncFib g = new FailingAsyncFib(9);
1587	+	try {
1588	+	invokeAll(g);
1589	+	shouldThrow();
1590	+	} catch (FJException success) {
1591	+	checkCompletedAbnormally(g, success);
1592	+	}
1593	+	}};
1594	+	testInvokeOnPool(singletonPool(), a);
1595	+	}
1596	+
1597	+	/**
1598	+	* invokeAll(tasks) with > 2 argument throws exception if any task does
1599	+	*/
1600	+	public void testAbnormalInvokeAll3Singleton() {
1601	+	RecursiveAction a = new CheckedRecursiveAction() {
1602	+	protected void realCompute() {
1603	+	AsyncFib f = new AsyncFib(8);
1604	+	FailingAsyncFib g = new FailingAsyncFib(9);
1605	+	AsyncFib h = new AsyncFib(7);
1606	+	ForkJoinTask[] tasks = { f, g, h };
1607	+	shuffle(tasks);
1608	+	try {
1609	+	invokeAll(tasks);
1610	+	shouldThrow();
1611	+	} catch (FJException success) {
1612	+	checkCompletedAbnormally(g, success);
1613	+	}
1614	+	}};
1615	+	testInvokeOnPool(singletonPool(), a);
1616	+	}
1617	+
1618	+	/**
1619	+	* invokeAll(collection) throws exception if any task does
1620	+	*/
1621	+	public void testAbnormalInvokeAllCollectionSingleton() {
1622	+	RecursiveAction a = new CheckedRecursiveAction() {
1623	+	protected void realCompute() {
1624	+	FailingAsyncFib f = new FailingAsyncFib(8);
1625	+	AsyncFib g = new AsyncFib(9);
1626	+	AsyncFib h = new AsyncFib(7);
1627	+	ForkJoinTask[] tasks = { f, g, h };
1628	+	shuffle(tasks);
1629	+	try {
1630	+	invokeAll(Arrays.asList(tasks));
1631	+	shouldThrow();
1632	+	} catch (FJException success) {
1633	+	checkCompletedAbnormally(f, success);
1634	+	}
1635	+	}};
1636	+	testInvokeOnPool(singletonPool(), a);
1637	+	}
1638	+
1639	+	/**
1640	+	* ForkJoinTask.quietlyComplete returns when task completes
1641	+	* normally without setting a value. The most recent value
1642	+	* established by setRawResult(V) (or null by default) is returned
1643	+	* from invoke.
1644	+	*/
1645	+	public void testQuietlyComplete() {
1646	+	RecursiveAction a = new CheckedRecursiveAction() {
1647	+	protected void realCompute() {
1648	+	AsyncFib f = new AsyncFib(8);
1649	+	f.quietlyComplete();
1650	+	assertEquals(8, f.number);
1651	+	checkCompletedNormally(f);
1652	+	}};
1653	+	testInvokeOnPool(mainPool(), a);
1654	+	}
1655	+
1656		}

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