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Comparing jsr166/src/test/tck/RecursiveActionTest.java (file contents):
Revision 1.8 by jsr166, Tue Nov 17 12:31:23 2009 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	–	import junit.framework.*;
7	–	import java.util.concurrent.*;
8	–	import java.util.*;
6
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.SynchronousQueue;
18	+	import java.util.concurrent.ThreadLocalRandom;
19	+	import java.util.concurrent.TimeoutException;
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() {
31	<	return new TestSuite(RecursiveActionTest.class);
31	>	return new TestSuite(RecursiveActionTest.class);
32		}
33
34	<	static final ForkJoinPool mainPool = new ForkJoinPool();
35	<	static final ForkJoinPool singletonPool = new ForkJoinPool(1);
36	<	static final ForkJoinPool asyncSingletonPool = new ForkJoinPool(1);
37	<	static {
38	<	asyncSingletonPool.setAsyncMode(true);
34	>	private static ForkJoinPool mainPool() {
35	>	return new ForkJoinPool();
36	>	}
37	>
38	>	private static ForkJoinPool singletonPool() {
39	>	return new ForkJoinPool(1);
40	>	}
41	>
42	>	private static ForkJoinPool asyncSingletonPool() {
43	>	return new ForkJoinPool(1,
44	>	ForkJoinPool.defaultForkJoinWorkerThreadFactory,
45	>	null, true);
46	>	}
47	>
48	>	private void testInvokeOnPool(ForkJoinPool pool, RecursiveAction a) {
49	>	try (PoolCleaner cleaner = cleaner(pool)) {
50	>	checkNotDone(a);
51	>
52	>	assertNull(pool.invoke(a));
53	>
54	>	checkCompletedNormally(a);
55	>	}
56		}
57
58	<	static final class FJException extends RuntimeException {
59	<	FJException() { super(); }
58	>	void checkNotDone(RecursiveAction a) {
59	>	assertFalse(a.isDone());
60	>	assertFalse(a.isCompletedNormally());
61	>	assertFalse(a.isCompletedAbnormally());
62	>	assertFalse(a.isCancelled());
63	>	assertNull(a.getException());
64	>	assertNull(a.getRawResult());
65	>
66	>	if (! ForkJoinTask.inForkJoinPool()) {
67	>	Thread.currentThread().interrupt();
68	>	try {
69	>	a.get();
70	>	shouldThrow();
71	>	} catch (InterruptedException success) {
72	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
73	>
74	>	Thread.currentThread().interrupt();
75	>	try {
76	>	a.get(randomTimeout(), randomTimeUnit());
77	>	shouldThrow();
78	>	} catch (InterruptedException success) {
79	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
80	>	}
81	>
82	>	try {
83	>	a.get(randomExpiredTimeout(), randomTimeUnit());
84	>	shouldThrow();
85	>	} catch (TimeoutException success) {
86	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
87	>	}
88	>
89	>	void checkCompletedNormally(RecursiveAction a) {
90	>	assertTrue(a.isDone());
91	>	assertFalse(a.isCancelled());
92	>	assertTrue(a.isCompletedNormally());
93	>	assertFalse(a.isCompletedAbnormally());
94	>	assertNull(a.getException());
95	>	assertNull(a.getRawResult());
96	>	assertNull(a.join());
97	>	assertFalse(a.cancel(false));
98	>	assertFalse(a.cancel(true));
99	>	try {
100	>	assertNull(a.get());
101	>	assertNull(a.get(randomTimeout(), randomTimeUnit()));
102	>	} catch (Exception fail) { threadUnexpectedException(fail); }
103	>	}
104	>
105	>	void checkCancelled(RecursiveAction a) {
106	>	assertTrue(a.isDone());
107	>	assertTrue(a.isCancelled());
108	>	assertFalse(a.isCompletedNormally());
109	>	assertTrue(a.isCompletedAbnormally());
110	>	assertTrue(a.getException() instanceof CancellationException);
111	>	assertNull(a.getRawResult());
112	>
113	>	try {
114	>	a.join();
115	>	shouldThrow();
116	>	} catch (CancellationException success) {
117	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
118	>
119	>	try {
120	>	a.get();
121	>	shouldThrow();
122	>	} catch (CancellationException success) {
123	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
124	>
125	>	try {
126	>	a.get(randomTimeout(), randomTimeUnit());
127	>	shouldThrow();
128	>	} catch (CancellationException success) {
129	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
130	>	}
131	>
132	>	void checkCompletedAbnormally(RecursiveAction a, Throwable t) {
133	>	assertTrue(a.isDone());
134	>	assertFalse(a.isCancelled());
135	>	assertFalse(a.isCompletedNormally());
136	>	assertTrue(a.isCompletedAbnormally());
137	>	assertSame(t.getClass(), a.getException().getClass());
138	>	assertNull(a.getRawResult());
139	>	assertFalse(a.cancel(false));
140	>	assertFalse(a.cancel(true));
141	>
142	>	try {
143	>	a.join();
144	>	shouldThrow();
145	>	} catch (Throwable expected) {
146	>	assertSame(expected.getClass(), t.getClass());
147	>	}
148	>
149	>	try {
150	>	a.get();
151	>	shouldThrow();
152	>	} catch (ExecutionException success) {
153	>	assertSame(t.getClass(), success.getCause().getClass());
154	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
155	>
156	>	try {
157	>	a.get(randomTimeout(), randomTimeUnit());
158	>	shouldThrow();
159	>	} catch (ExecutionException success) {
160	>	assertSame(t.getClass(), success.getCause().getClass());
161	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
162	>	}
163	>
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
170	<	static final class FibAction extends RecursiveAction {
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 compute() {
174	>	protected void realCompute() {
175		int n = number;
176		if (n <= 1)
177		result = n;
#	Line 46 | 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 68 | Line 206 | public class RecursiveActionTest extends
206		* invoke returns when task completes normally.
207		* isCompletedAbnormally and isCancelled return false for normally
208		* completed tasks. getRawResult of a RecursiveAction returns null;
71	–	*
209		*/
210		public void testInvoke() {
211	<	RecursiveAction a = new RecursiveAction() {
212	<	public void compute() {
211	>	RecursiveAction a = new CheckedRecursiveAction() {
212	>	protected void realCompute() {
213		FibAction f = new FibAction(8);
214	<	f.invoke();
215	<	threadAssertTrue(f.result == 21);
216	<	threadAssertTrue(f.isDone());
80	<	threadAssertFalse(f.isCancelled());
81	<	threadAssertFalse(f.isCompletedAbnormally());
82	<	threadAssertTrue(f.getRawResult() == null);
214	>	assertNull(f.invoke());
215	>	assertEquals(21, f.result);
216	>	checkCompletedNormally(f);
217		}};
218	<	mainPool.invoke(a);
218	>	testInvokeOnPool(mainPool(), a);
219		}
220
221		/**
#	Line 90 | Line 224 | public class RecursiveActionTest extends
224		* completed tasks
225		*/
226		public void testQuietlyInvoke() {
227	<	RecursiveAction a = new RecursiveAction() {
228	<	public void compute() {
227	>	RecursiveAction a = new CheckedRecursiveAction() {
228	>	protected void realCompute() {
229		FibAction f = new FibAction(8);
230		f.quietlyInvoke();
231	<	threadAssertTrue(f.result == 21);
232	<	threadAssertTrue(f.isDone());
99	<	threadAssertFalse(f.isCancelled());
100	<	threadAssertFalse(f.isCompletedAbnormally());
101	<	threadAssertTrue(f.getRawResult() == null);
231	>	assertEquals(21, f.result);
232	>	checkCompletedNormally(f);
233		}};
234	<	mainPool.invoke(a);
234	>	testInvokeOnPool(mainPool(), a);
235		}
236
237		/**
238		* join of a forked task returns when task completes
239		*/
240		public void testForkJoin() {
241	<	RecursiveAction a = new RecursiveAction() {
242	<	public void compute() {
241	>	RecursiveAction a = new CheckedRecursiveAction() {
242	>	protected void realCompute() {
243		FibAction f = new FibAction(8);
244	<	f.fork();
245	<	f.join();
246	<	threadAssertTrue(f.result == 21);
247	<	threadAssertTrue(f.isDone());
117	<	threadAssertTrue(f.getRawResult() == null);
244	>	assertSame(f, f.fork());
245	>	assertNull(f.join());
246	>	assertEquals(21, f.result);
247	>	checkCompletedNormally(f);
248		}};
249	<	mainPool.invoke(a);
249	>	testInvokeOnPool(mainPool(), a);
250		}
251
252		/**
253	<	* get of a forked task returns when task completes
253	>	* join/quietlyJoin of a forked task succeeds in the presence of interrupts
254		*/
255	<	public void testForkGet() {
256	<	RecursiveAction a = new RecursiveAction() {
257	<	public void compute() {
255	>	public void testJoinIgnoresInterrupts() {
256	>	RecursiveAction a = new CheckedRecursiveAction() {
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	>	currentThread.interrupt();
264	>	assertNull(f.join());
265	>	Thread.interrupted();
266	>	assertEquals(21, f.result);
267	>	checkCompletedNormally(f);
268	>
269	>	f = new FibAction(8);
270	>	f.cancel(true);
271	>	assertSame(f, f.fork());
272	>	currentThread.interrupt();
273		try {
274	<	FibAction f = new FibAction(8);
275	<	f.fork();
276	<	f.get();
277	<	threadAssertTrue(f.result == 21);
278	<	threadAssertTrue(f.isDone());
134	<	} catch (Exception ex) {
135	<	unexpectedException(ex);
274	>	f.join();
275	>	shouldThrow();
276	>	} catch (CancellationException success) {
277	>	Thread.interrupted();
278	>	checkCancelled(f);
279		}
137	–	}};
138	–	mainPool.invoke(a);
139	–	}
280
281	<	/**
282	<	* timed get of a forked task returns when task completes
283	<	*/
284	<	public void testForkTimedGet() {
145	<	RecursiveAction a = new RecursiveAction() {
146	<	public void compute() {
281	>	f = new FibAction(8);
282	>	f.completeExceptionally(new FJException());
283	>	assertSame(f, f.fork());
284	>	currentThread.interrupt();
285		try {
286	<	FibAction f = new FibAction(8);
287	<	f.fork();
288	<	f.get(5L, TimeUnit.SECONDS);
289	<	threadAssertTrue(f.result == 21);
290	<	threadAssertTrue(f.isDone());
153	<	} catch (Exception ex) {
154	<	unexpectedException(ex);
286	>	f.join();
287	>	shouldThrow();
288	>	} catch (FJException success) {
289	>	Thread.interrupted();
290	>	checkCompletedAbnormally(f, success);
291		}
292	+
293	+	// test quietlyJoin()
294	+	f = new FibAction(8);
295	+	assertSame(f, f.fork());
296	+	currentThread.interrupt();
297	+	f.quietlyJoin();
298	+	Thread.interrupted();
299	+	assertEquals(21, f.result);
300	+	checkCompletedNormally(f);
301	+
302	+	f = new FibAction(8);
303	+	f.cancel(true);
304	+	assertSame(f, f.fork());
305	+	currentThread.interrupt();
306	+	f.quietlyJoin();
307	+	Thread.interrupted();
308	+	checkCancelled(f);
309	+
310	+	f = new FibAction(8);
311	+	f.completeExceptionally(new FJException());
312	+	assertSame(f, f.fork());
313	+	currentThread.interrupt();
314	+	f.quietlyJoin();
315	+	Thread.interrupted();
316	+	checkCompletedAbnormally(f, f.getException());
317		}};
318	<	mainPool.invoke(a);
318	>	testInvokeOnPool(mainPool(), a);
319	>	a.reinitialize();
320	>	testInvokeOnPool(singletonPool(), a);
321		}
322
323		/**
324	<	* timed get with null time unit throws NPE
324	>	* join/quietlyJoin of a forked task when not in ForkJoinPool
325	>	* succeeds in the presence of interrupts
326		*/
327	<	public void testForkTimedGetNPE() {
328	<	RecursiveAction a = new RecursiveAction() {
329	<	public void compute() {
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	<	FibAction f = new FibAction(8);
168	<	f.fork();
169	<	f.get(5L, null);
378	>	f.join();
379		shouldThrow();
380	<	} catch (NullPointerException success) {
381	<	} catch (Exception ex) {
382	<	unexpectedException(ex);
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	<	mainPool.invoke(a);
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	<	* helpJoin of a forked task returns when task completes
421	>	* get of a forked task returns when task completes
422		*/
423	<	public void testForkHelpJoin() {
424	<	RecursiveAction a = new RecursiveAction() {
425	<	public void compute() {
423	>	public void testForkGet() {
424	>	RecursiveAction a = new CheckedRecursiveAction() {
425	>	protected void realCompute() throws Exception {
426		FibAction f = new FibAction(8);
427	<	f.fork();
428	<	f.helpJoin();
429	<	threadAssertTrue(f.result == 21);
430	<	threadAssertTrue(f.isDone());
427	>	assertSame(f, f.fork());
428	>	assertNull(f.get());
429	>	assertEquals(21, f.result);
430	>	checkCompletedNormally(f);
431		}};
432	<	mainPool.invoke(a);
432	>	testInvokeOnPool(mainPool(), a);
433		}
434
435		/**
436	<	* quietlyJoin of a forked task returns when task completes
436	>	* timed get of a forked task returns when task completes
437		*/
438	<	public void testForkQuietlyJoin() {
439	<	RecursiveAction a = new RecursiveAction() {
440	<	public void compute() {
438	>	public void testForkTimedGet() {
439	>	RecursiveAction a = new CheckedRecursiveAction() {
440	>	protected void realCompute() throws Exception {
441		FibAction f = new FibAction(8);
442	<	f.fork();
443	<	f.quietlyJoin();
444	<	threadAssertTrue(f.result == 21);
445	<	threadAssertTrue(f.isDone());
442	>	assertSame(f, f.fork());
443	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
444	>	assertEquals(21, f.result);
445	>	checkCompletedNormally(f);
446		}};
447	<	mainPool.invoke(a);
447	>	testInvokeOnPool(mainPool(), a);
448		}
449
209	–
450		/**
451	<	* quietlyHelpJoin of a forked task returns when task completes
451	>	* timed get with null time unit throws NPE
452		*/
453	<	public void testForkQuietlyHelpJoin() {
454	<	RecursiveAction a = new RecursiveAction() {
455	<	public void compute() {
453	>	public void testForkTimedGetNPE() {
454	>	RecursiveAction a = new CheckedRecursiveAction() {
455	>	protected void realCompute() throws Exception {
456		FibAction f = new FibAction(8);
457	<	f.fork();
458	<	f.quietlyHelpJoin();
459	<	threadAssertTrue(f.result == 21);
460	<	threadAssertTrue(f.isDone());
457	>	assertSame(f, f.fork());
458	>	try {
459	>	f.get(randomTimeout(), null);
460	>	shouldThrow();
461	>	} catch (NullPointerException success) {}
462		}};
463	<	mainPool.invoke(a);
463	>	testInvokeOnPool(mainPool(), a);
464		}
465
466	+	/**
467	+	* quietlyJoin of a forked task returns when task completes
468	+	*/
469	+	public void testForkQuietlyJoin() {
470	+	RecursiveAction a = new CheckedRecursiveAction() {
471	+	protected void realCompute() {
472	+	FibAction f = new FibAction(8);
473	+	assertSame(f, f.fork());
474	+	f.quietlyJoin();
475	+	assertEquals(21, f.result);
476	+	checkCompletedNormally(f);
477	+	}};
478	+	testInvokeOnPool(mainPool(), a);
479	+	}
480
481		/**
482		* helpQuiesce returns when tasks are complete.
483		* getQueuedTaskCount returns 0 when quiescent
484		*/
485		public void testForkHelpQuiesce() {
486	<	RecursiveAction a = new RecursiveAction() {
487	<	public void compute() {
486	>	RecursiveAction a = new CheckedRecursiveAction() {
487	>	protected void realCompute() {
488		FibAction f = new FibAction(8);
489	<	f.fork();
490	<	f.helpQuiesce();
491	<	threadAssertTrue(f.result == 21);
492	<	threadAssertTrue(f.isDone());
493	<	threadAssertTrue(getQueuedTaskCount() == 0);
489	>	assertSame(f, f.fork());
490	>	helpQuiesce();
491	>	while (!f.isDone()) // wait out race
492	>	;
493	>	assertEquals(21, f.result);
494	>	assertEquals(0, getQueuedTaskCount());
495	>	checkCompletedNormally(f);
496		}};
497	<	mainPool.invoke(a);
497	>	testInvokeOnPool(mainPool(), a);
498		}
499
243	–
500		/**
501		* invoke task throws exception when task completes abnormally
502		*/
503		public void testAbnormalInvoke() {
504	<	RecursiveAction a = new RecursiveAction() {
505	<	public void compute() {
504	>	RecursiveAction a = new CheckedRecursiveAction() {
505	>	protected void realCompute() {
506	>	FailingFibAction f = new FailingFibAction(8);
507		try {
251	–	FailingFibAction f = new FailingFibAction(8);
508		f.invoke();
509		shouldThrow();
510		} catch (FJException success) {
511	+	checkCompletedAbnormally(f, success);
512		}
513		}};
514	<	mainPool.invoke(a);
514	>	testInvokeOnPool(mainPool(), a);
515		}
516
517		/**
518		* quietlyInvoke task returns when task completes abnormally
519		*/
520		public void testAbnormalQuietlyInvoke() {
521	<	RecursiveAction a = new RecursiveAction() {
522	<	public void compute() {
521	>	RecursiveAction a = new CheckedRecursiveAction() {
522	>	protected void realCompute() {
523		FailingFibAction f = new FailingFibAction(8);
524		f.quietlyInvoke();
525	<	threadAssertTrue(f.isDone());
525	>	assertTrue(f.getException() instanceof FJException);
526	>	checkCompletedAbnormally(f, f.getException());
527		}};
528	<	mainPool.invoke(a);
528	>	testInvokeOnPool(mainPool(), a);
529		}
530
531		/**
532		* join of a forked task throws exception when task completes abnormally
533		*/
534		public void testAbnormalForkJoin() {
535	<	RecursiveAction a = new RecursiveAction() {
536	<	public void compute() {
535	>	RecursiveAction a = new CheckedRecursiveAction() {
536	>	protected void realCompute() {
537	>	FailingFibAction f = new FailingFibAction(8);
538	>	assertSame(f, f.fork());
539		try {
280	–	FailingFibAction f = new FailingFibAction(8);
281	–	f.fork();
540		f.join();
541		shouldThrow();
542		} catch (FJException success) {
543	+	checkCompletedAbnormally(f, success);
544		}
545		}};
546	<	mainPool.invoke(a);
546	>	testInvokeOnPool(mainPool(), a);
547		}
548
549		/**
550		* get of a forked task throws exception when task completes abnormally
551		*/
552		public void testAbnormalForkGet() {
553	<	RecursiveAction a = new RecursiveAction() {
554	<	public void compute() {
553	>	RecursiveAction a = new CheckedRecursiveAction() {
554	>	protected void realCompute() throws Exception {
555	>	FailingFibAction f = new FailingFibAction(8);
556	>	assertSame(f, f.fork());
557		try {
297	–	FailingFibAction f = new FailingFibAction(8);
298	–	f.fork();
558		f.get();
559		shouldThrow();
560		} catch (ExecutionException success) {
561	<	} catch (Exception ex) {
562	<	unexpectedException(ex);
561	>	Throwable cause = success.getCause();
562	>	assertTrue(cause instanceof FJException);
563	>	checkCompletedAbnormally(f, cause);
564		}
565		}};
566	<	mainPool.invoke(a);
566	>	testInvokeOnPool(mainPool(), a);
567		}
568
569		/**
570		* timed get of a forked task throws exception when task completes abnormally
571		*/
572		public void testAbnormalForkTimedGet() {
573	<	RecursiveAction a = new RecursiveAction() {
574	<	public void compute() {
573	>	RecursiveAction a = new CheckedRecursiveAction() {
574	>	protected void realCompute() throws Exception {
575	>	FailingFibAction f = new FailingFibAction(8);
576	>	assertSame(f, f.fork());
577		try {
578	<	FailingFibAction f = new FailingFibAction(8);
317	<	f.fork();
318	<	f.get(5L, TimeUnit.SECONDS);
578	>	f.get(LONG_DELAY_MS, MILLISECONDS);
579		shouldThrow();
580		} catch (ExecutionException success) {
581	<	} catch (Exception ex) {
582	<	unexpectedException(ex);
581	>	Throwable cause = success.getCause();
582	>	assertTrue(cause instanceof FJException);
583	>	checkCompletedAbnormally(f, cause);
584		}
585		}};
586	<	mainPool.invoke(a);
326	<	}
327	<
328	<	/**
329	<	* join of a forked task throws exception when task completes abnormally
330	<	*/
331	<	public void testAbnormalForkHelpJoin() {
332	<	RecursiveAction a = new RecursiveAction() {
333	<	public void compute() {
334	<	try {
335	<	FailingFibAction f = new FailingFibAction(8);
336	<	f.fork();
337	<	f.helpJoin();
338	<	shouldThrow();
339	<	} catch (FJException success) {
340	<	}
341	<	}};
342	<	mainPool.invoke(a);
343	<	}
344	<
345	<	/**
346	<	* quietlyHelpJoin of a forked task returns when task completes abnormally.
347	<	* getException of failed task returns its exception.
348	<	* isCompletedAbnormally of a failed task returns true.
349	<	* isCancelled of a failed uncancelled task returns false
350	<	*/
351	<	public void testAbnormalForkQuietlyHelpJoin() {
352	<	RecursiveAction a = new RecursiveAction() {
353	<	public void compute() {
354	<	FailingFibAction f = new FailingFibAction(8);
355	<	f.fork();
356	<	f.quietlyHelpJoin();
357	<	threadAssertTrue(f.isDone());
358	<	threadAssertTrue(f.isCompletedAbnormally());
359	<	threadAssertFalse(f.isCancelled());
360	<	threadAssertTrue(f.getException() instanceof FJException);
361	<	}};
362	<	mainPool.invoke(a);
586	>	testInvokeOnPool(mainPool(), a);
587		}
588
589		/**
590		* quietlyJoin of a forked task returns when task completes abnormally
591		*/
592		public void testAbnormalForkQuietlyJoin() {
593	<	RecursiveAction a = new RecursiveAction() {
594	<	public void compute() {
593	>	RecursiveAction a = new CheckedRecursiveAction() {
594	>	protected void realCompute() {
595		FailingFibAction f = new FailingFibAction(8);
596	<	f.fork();
596	>	assertSame(f, f.fork());
597		f.quietlyJoin();
598	<	threadAssertTrue(f.isDone());
599	<	threadAssertTrue(f.isCompletedAbnormally());
376	<	threadAssertTrue(f.getException() instanceof FJException);
598	>	assertTrue(f.getException() instanceof FJException);
599	>	checkCompletedAbnormally(f, f.getException());
600		}};
601	<	mainPool.invoke(a);
601	>	testInvokeOnPool(mainPool(), a);
602		}
603
604		/**
605		* invoke task throws exception when task cancelled
606		*/
607		public void testCancelledInvoke() {
608	<	RecursiveAction a = new RecursiveAction() {
609	<	public void compute() {
608	>	RecursiveAction a = new CheckedRecursiveAction() {
609	>	protected void realCompute() {
610	>	FibAction f = new FibAction(8);
611	>	assertTrue(f.cancel(true));
612		try {
388	–	FibAction f = new FibAction(8);
389	–	f.cancel(true);
613		f.invoke();
614		shouldThrow();
615		} catch (CancellationException success) {
616	+	checkCancelled(f);
617		}
618		}};
619	<	mainPool.invoke(a);
619	>	testInvokeOnPool(mainPool(), a);
620		}
621
622		/**
623		* join of a forked task throws exception when task cancelled
624		*/
625		public void testCancelledForkJoin() {
626	<	RecursiveAction a = new RecursiveAction() {
627	<	public void compute() {
626	>	RecursiveAction a = new CheckedRecursiveAction() {
627	>	protected void realCompute() {
628	>	FibAction f = new FibAction(8);
629	>	assertTrue(f.cancel(true));
630	>	assertSame(f, f.fork());
631		try {
405	–	FibAction f = new FibAction(8);
406	–	f.cancel(true);
407	–	f.fork();
632		f.join();
633		shouldThrow();
634		} catch (CancellationException success) {
635	+	checkCancelled(f);
636		}
637		}};
638	<	mainPool.invoke(a);
638	>	testInvokeOnPool(mainPool(), a);
639		}
640
641		/**
642		* get of a forked task throws exception when task cancelled
643		*/
644		public void testCancelledForkGet() {
645	<	RecursiveAction a = new RecursiveAction() {
646	<	public void compute() {
645	>	RecursiveAction a = new CheckedRecursiveAction() {
646	>	protected void realCompute() throws Exception {
647	>	FibAction f = new FibAction(8);
648	>	assertTrue(f.cancel(true));
649	>	assertSame(f, f.fork());
650		try {
423	–	FibAction f = new FibAction(8);
424	–	f.cancel(true);
425	–	f.fork();
651		f.get();
652		shouldThrow();
653		} catch (CancellationException success) {
654	<	} catch (Exception ex) {
430	<	unexpectedException(ex);
654	>	checkCancelled(f);
655		}
656		}};
657	<	mainPool.invoke(a);
657	>	testInvokeOnPool(mainPool(), a);
658		}
659
660		/**
661		* timed get of a forked task throws exception when task cancelled
662		*/
663		public void testCancelledForkTimedGet() {
664	<	RecursiveAction a = new RecursiveAction() {
665	<	public void compute() {
664	>	RecursiveAction a = new CheckedRecursiveAction() {
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	<	FibAction f = new FibAction(8);
444	<	f.cancel(true);
445	<	f.fork();
446	<	f.get(5L, TimeUnit.SECONDS);
670	>	f.get(LONG_DELAY_MS, MILLISECONDS);
671		shouldThrow();
672		} catch (CancellationException success) {
673	<	} catch (Exception ex) {
450	<	unexpectedException(ex);
673	>	checkCancelled(f);
674		}
675		}};
676	<	mainPool.invoke(a);
454	<	}
455	<
456	<	/**
457	<	* join of a forked task throws exception when task cancelled
458	<	*/
459	<	public void testCancelledForkHelpJoin() {
460	<	RecursiveAction a = new RecursiveAction() {
461	<	public void compute() {
462	<	try {
463	<	FibAction f = new FibAction(8);
464	<	f.cancel(true);
465	<	f.fork();
466	<	f.helpJoin();
467	<	shouldThrow();
468	<	} catch (CancellationException success) {
469	<	}
470	<	}};
471	<	mainPool.invoke(a);
472	<	}
473	<
474	<	/**
475	<	* quietlyHelpJoin of a forked task returns when task cancelled.
476	<	* getException of cancelled task returns its exception.
477	<	* isCompletedAbnormally of a cancelled task returns true.
478	<	* isCancelled of a cancelled task returns true
479	<	*/
480	<	public void testCancelledForkQuietlyHelpJoin() {
481	<	RecursiveAction a = new RecursiveAction() {
482	<	public void compute() {
483	<	FibAction f = new FibAction(8);
484	<	f.cancel(true);
485	<	f.fork();
486	<	f.quietlyHelpJoin();
487	<	threadAssertTrue(f.isDone());
488	<	threadAssertTrue(f.isCompletedAbnormally());
489	<	threadAssertTrue(f.isCancelled());
490	<	threadAssertTrue(f.getException() instanceof CancellationException);
491	<	}};
492	<	mainPool.invoke(a);
676	>	testInvokeOnPool(mainPool(), a);
677		}
678
679		/**
680		* quietlyJoin of a forked task returns when task cancelled
681		*/
682		public void testCancelledForkQuietlyJoin() {
683	<	RecursiveAction a = new RecursiveAction() {
684	<	public void compute() {
683	>	RecursiveAction a = new CheckedRecursiveAction() {
684	>	protected void realCompute() {
685		FibAction f = new FibAction(8);
686	<	f.cancel(true);
687	<	f.fork();
686	>	assertTrue(f.cancel(true));
687	>	assertSame(f, f.fork());
688		f.quietlyJoin();
689	<	threadAssertTrue(f.isDone());
506	<	threadAssertTrue(f.isCompletedAbnormally());
507	<	threadAssertTrue(f.getException() instanceof CancellationException);
689	>	checkCancelled(f);
690		}};
691	<	mainPool.invoke(a);
691	>	testInvokeOnPool(mainPool(), a);
692		}
693
694		/**
695		* getPool of executing task returns its pool
696		*/
697		public void testGetPool() {
698	<	RecursiveAction a = new RecursiveAction() {
699	<	public void compute() {
700	<	threadAssertTrue(getPool() == mainPool);
698	>	final ForkJoinPool mainPool = mainPool();
699	>	RecursiveAction a = new CheckedRecursiveAction() {
700	>	protected void realCompute() {
701	>	assertSame(mainPool, getPool());
702		}};
703	<	mainPool.invoke(a);
703	>	testInvokeOnPool(mainPool, a);
704		}
705
706		/**
707		* getPool of non-FJ task returns null
708		*/
709		public void testGetPool2() {
710	<	RecursiveAction a = new RecursiveAction() {
711	<	public void compute() {
712	<	threadAssertTrue(getPool() == null);
710	>	RecursiveAction a = new CheckedRecursiveAction() {
711	>	protected void realCompute() {
712	>	assertNull(getPool());
713		}};
714	<	a.invoke();
714	>	assertNull(a.invoke());
715		}
716
717		/**
718		* inForkJoinPool of executing task returns true
719		*/
720		public void testInForkJoinPool() {
721	<	RecursiveAction a = new RecursiveAction() {
722	<	public void compute() {
723	<	threadAssertTrue(inForkJoinPool());
721	>	RecursiveAction a = new CheckedRecursiveAction() {
722	>	protected void realCompute() {
723	>	assertTrue(inForkJoinPool());
724		}};
725	<	mainPool.invoke(a);
725	>	testInvokeOnPool(mainPool(), a);
726		}
727
728		/**
729		* inForkJoinPool of non-FJ task returns false
730		*/
731		public void testInForkJoinPool2() {
732	<	RecursiveAction a = new RecursiveAction() {
733	<	public void compute() {
734	<	threadAssertTrue(!inForkJoinPool());
732	>	RecursiveAction a = new CheckedRecursiveAction() {
733	>	protected void realCompute() {
734	>	assertFalse(inForkJoinPool());
735		}};
736	<	a.invoke();
736	>	assertNull(a.invoke());
737		}
738
739		/**
740		* getPool of current thread in pool returns its pool
741		*/
742		public void testWorkerGetPool() {
743	<	RecursiveAction a = new RecursiveAction() {
744	<	public void compute() {
743	>	final ForkJoinPool mainPool = mainPool();
744	>	RecursiveAction a = new CheckedRecursiveAction() {
745	>	protected void realCompute() {
746		ForkJoinWorkerThread w =
747	<	(ForkJoinWorkerThread)(Thread.currentThread());
748	<	threadAssertTrue(w.getPool() == mainPool);
747	>	(ForkJoinWorkerThread) Thread.currentThread();
748	>	assertSame(mainPool, w.getPool());
749		}};
750	<	mainPool.invoke(a);
750	>	testInvokeOnPool(mainPool, a);
751		}
752
753		/**
754		* getPoolIndex of current thread in pool returns 0 <= value < poolSize
571	–	*
755		*/
756		public void testWorkerGetPoolIndex() {
757	<	RecursiveAction a = new RecursiveAction() {
758	<	public void compute() {
757	>	final ForkJoinPool mainPool = mainPool();
758	>	RecursiveAction a = new CheckedRecursiveAction() {
759	>	protected void realCompute() {
760		ForkJoinWorkerThread w =
761	<	(ForkJoinWorkerThread)(Thread.currentThread());
762	<	int idx = w.getPoolIndex();
763	<	threadAssertTrue(idx >= 0);
764	<	threadAssertTrue(idx < mainPool.getPoolSize());
761	>	(ForkJoinWorkerThread) Thread.currentThread();
762	>	assertTrue(w.getPoolIndex() >= 0);
763	>	// pool size can shrink after assigning index, so cannot check
764	>	// assertTrue(w.getPoolIndex() < mainPool.getPoolSize());
765		}};
766	<	mainPool.invoke(a);
766	>	testInvokeOnPool(mainPool, a);
767		}
768
585	–
769		/**
770		* setRawResult(null) succeeds
771		*/
772		public void testSetRawResult() {
773	<	RecursiveAction a = new RecursiveAction() {
774	<	public void compute() {
773	>	RecursiveAction a = new CheckedRecursiveAction() {
774	>	protected void realCompute() {
775		setRawResult(null);
776	+	assertNull(getRawResult());
777		}};
778	<	a.invoke();
778	>	assertNull(a.invoke());
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 RecursiveAction() {
786	<	public void compute() {
785	>	RecursiveAction a = new CheckedRecursiveAction() {
786	>	protected void realCompute() {
787		FibAction f = new FibAction(8);
788	<	f.invoke();
789	<	threadAssertTrue(f.result == 21);
790	<	threadAssertTrue(f.isDone());
791	<	threadAssertFalse(f.isCancelled());
792	<	threadAssertFalse(f.isCompletedAbnormally());
793	<	f.reinitialize();
794	<	f.invoke();
795	<	threadAssertTrue(f.result == 21);
788	>	checkNotDone(f);
789	>
790	>	for (int i = 0; i < 3; i++) {
791	>	assertNull(f.invoke());
792	>	assertEquals(21, f.result);
793	>	checkCompletedNormally(f);
794	>	f.reinitialize();
795	>	checkNotDone(f);
796	>	}
797		}};
798	<	mainPool.invoke(a);
798	>	testInvokeOnPool(mainPool(), a);
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 RecursiveAction() {
829	<	public void compute() {
828	>	RecursiveAction a = new CheckedRecursiveAction() {
829	>	protected void realCompute() {
830	>	FibAction f = new FibAction(8);
831	>	f.completeExceptionally(new FJException());
832		try {
623	–	FibAction f = new FibAction(8);
624	–	f.completeExceptionally(new FJException());
833		f.invoke();
834		shouldThrow();
835		} catch (FJException success) {
836	+	checkCompletedAbnormally(f, success);
837		}
838		}};
839	<	mainPool.invoke(a);
839	>	testInvokeOnPool(mainPool(), a);
840		}
841
842		/**
843		* invoke task suppresses execution invoking complete
844		*/
845		public void testComplete() {
846	<	RecursiveAction a = new RecursiveAction() {
847	<	public void compute() {
846	>	RecursiveAction a = new CheckedRecursiveAction() {
847	>	protected void realCompute() {
848		FibAction f = new FibAction(8);
849		f.complete(null);
850	<	f.invoke();
851	<	threadAssertTrue(f.isDone());
852	<	threadAssertTrue(f.result == 0);
850	>	assertNull(f.invoke());
851	>	assertEquals(0, f.result);
852	>	checkCompletedNormally(f);
853		}};
854	<	mainPool.invoke(a);
854	>	testInvokeOnPool(mainPool(), a);
855		}
856
857		/**
858		* invokeAll(t1, t2) invokes all task arguments
859		*/
860		public void testInvokeAll2() {
861	<	RecursiveAction a = new RecursiveAction() {
862	<	public void compute() {
861	>	RecursiveAction a = new CheckedRecursiveAction() {
862	>	protected void realCompute() {
863		FibAction f = new FibAction(8);
864		FibAction g = new FibAction(9);
865		invokeAll(f, g);
866	<	threadAssertTrue(f.isDone());
867	<	threadAssertTrue(f.result == 21);
868	<	threadAssertTrue(g.isDone());
869	<	threadAssertTrue(g.result == 34);
866	>	checkCompletedNormally(f);
867	>	assertEquals(21, f.result);
868	>	checkCompletedNormally(g);
869	>	assertEquals(34, g.result);
870		}};
871	<	mainPool.invoke(a);
871	>	testInvokeOnPool(mainPool(), a);
872		}
873
874		/**
875		* invokeAll(tasks) with 1 argument invokes task
876		*/
877		public void testInvokeAll1() {
878	<	RecursiveAction a = new RecursiveAction() {
879	<	public void compute() {
878	>	RecursiveAction a = new CheckedRecursiveAction() {
879	>	protected void realCompute() {
880		FibAction f = new FibAction(8);
881		invokeAll(f);
882	<	threadAssertTrue(f.isDone());
883	<	threadAssertTrue(f.result == 21);
882	>	checkCompletedNormally(f);
883	>	assertEquals(21, f.result);
884		}};
885	<	mainPool.invoke(a);
885	>	testInvokeOnPool(mainPool(), a);
886		}
887
888		/**
889		* invokeAll(tasks) with > 2 argument invokes tasks
890		*/
891		public void testInvokeAll3() {
892	<	RecursiveAction a = new RecursiveAction() {
893	<	public void compute() {
892	>	RecursiveAction a = new CheckedRecursiveAction() {
893	>	protected void realCompute() {
894		FibAction f = new FibAction(8);
895		FibAction g = new FibAction(9);
896		FibAction h = new FibAction(7);
897		invokeAll(f, g, h);
898	<	threadAssertTrue(f.isDone());
899	<	threadAssertTrue(f.result == 21);
900	<	threadAssertTrue(g.isDone());
901	<	threadAssertTrue(g.result == 34);
902	<	threadAssertTrue(h.isDone());
903	<	threadAssertTrue(h.result == 13);
898	>	assertTrue(f.isDone());
899	>	assertTrue(g.isDone());
900	>	assertTrue(h.isDone());
901	>	checkCompletedNormally(f);
902	>	assertEquals(21, f.result);
903	>	checkCompletedNormally(g);
904	>	assertEquals(34, g.result);
905	>	checkCompletedNormally(g);
906	>	assertEquals(13, h.result);
907		}};
908	<	mainPool.invoke(a);
908	>	testInvokeOnPool(mainPool(), a);
909		}
910
911		/**
912		* invokeAll(collection) invokes all tasks in the collection
913		*/
914		public void testInvokeAllCollection() {
915	<	RecursiveAction a = new RecursiveAction() {
916	<	public void compute() {
915	>	RecursiveAction a = new CheckedRecursiveAction() {
916	>	protected void realCompute() {
917		FibAction f = new FibAction(8);
918		FibAction g = new FibAction(9);
919		FibAction h = new FibAction(7);
#	Line 710 | Line 922 | public class RecursiveActionTest extends
922		set.add(g);
923		set.add(h);
924		invokeAll(set);
925	<	threadAssertTrue(f.isDone());
926	<	threadAssertTrue(f.result == 21);
927	<	threadAssertTrue(g.isDone());
928	<	threadAssertTrue(g.result == 34);
929	<	threadAssertTrue(h.isDone());
930	<	threadAssertTrue(h.result == 13);
925	>	assertTrue(f.isDone());
926	>	assertTrue(g.isDone());
927	>	assertTrue(h.isDone());
928	>	checkCompletedNormally(f);
929	>	assertEquals(21, f.result);
930	>	checkCompletedNormally(g);
931	>	assertEquals(34, g.result);
932	>	checkCompletedNormally(g);
933	>	assertEquals(13, h.result);
934		}};
935	<	mainPool.invoke(a);
935	>	testInvokeOnPool(mainPool(), a);
936		}
937
723	–
938		/**
939		* invokeAll(tasks) with any null task throws NPE
940		*/
941		public void testInvokeAllNPE() {
942	<	RecursiveAction a = new RecursiveAction() {
943	<	public void compute() {
942	>	RecursiveAction a = new CheckedRecursiveAction() {
943	>	protected void realCompute() {
944	>	FibAction f = new FibAction(8);
945	>	FibAction g = new FibAction(9);
946	>	FibAction h = null;
947		try {
731	–	FibAction f = new FibAction(8);
732	–	FibAction g = new FibAction(9);
733	–	FibAction h = null;
948		invokeAll(f, g, h);
949		shouldThrow();
950	<	} catch (NullPointerException success) {
737	<	}
950	>	} catch (NullPointerException success) {}
951		}};
952	<	mainPool.invoke(a);
952	>	testInvokeOnPool(mainPool(), a);
953		}
954
955		/**
956		* invokeAll(t1, t2) throw exception if any task does
957		*/
958		public void testAbnormalInvokeAll2() {
959	<	RecursiveAction a = new RecursiveAction() {
960	<	public void compute() {
959	>	RecursiveAction a = new CheckedRecursiveAction() {
960	>	protected void realCompute() {
961	>	FibAction f = new FibAction(8);
962	>	FailingFibAction g = new FailingFibAction(9);
963		try {
749	–	FibAction f = new FibAction(8);
750	–	FailingFibAction g = new FailingFibAction(9);
964		invokeAll(f, g);
965		shouldThrow();
966		} catch (FJException success) {
967	+	checkCompletedAbnormally(g, success);
968		}
969		}};
970	<	mainPool.invoke(a);
970	>	testInvokeOnPool(mainPool(), a);
971		}
972
973		/**
974		* invokeAll(tasks) with 1 argument throws exception if task does
975		*/
976		public void testAbnormalInvokeAll1() {
977	<	RecursiveAction a = new RecursiveAction() {
978	<	public void compute() {
977	>	RecursiveAction a = new CheckedRecursiveAction() {
978	>	protected void realCompute() {
979	>	FailingFibAction g = new FailingFibAction(9);
980		try {
766	–	FailingFibAction g = new FailingFibAction(9);
981		invokeAll(g);
982		shouldThrow();
983		} catch (FJException success) {
984	+	checkCompletedAbnormally(g, success);
985		}
986		}};
987	<	mainPool.invoke(a);
987	>	testInvokeOnPool(mainPool(), a);
988		}
989
990		/**
991		* invokeAll(tasks) with > 2 argument throws exception if any task does
992		*/
993		public void testAbnormalInvokeAll3() {
994	<	RecursiveAction a = new RecursiveAction() {
995	<	public void compute() {
994	>	RecursiveAction a = new CheckedRecursiveAction() {
995	>	protected void realCompute() {
996	>	FibAction f = new FibAction(8);
997	>	FailingFibAction g = new FailingFibAction(9);
998	>	FibAction h = new FibAction(7);
999		try {
782	–	FibAction f = new FibAction(8);
783	–	FailingFibAction g = new FailingFibAction(9);
784	–	FibAction h = new FibAction(7);
1000		invokeAll(f, g, h);
1001		shouldThrow();
1002		} catch (FJException success) {
1003	+	checkCompletedAbnormally(g, success);
1004		}
1005		}};
1006	<	mainPool.invoke(a);
1006	>	testInvokeOnPool(mainPool(), a);
1007		}
1008
1009		/**
1010		* invokeAll(collection) throws exception if any task does
1011		*/
1012		public void testAbnormalInvokeAllCollection() {
1013	<	RecursiveAction a = new RecursiveAction() {
1014	<	public void compute() {
1013	>	RecursiveAction a = new CheckedRecursiveAction() {
1014	>	protected void realCompute() {
1015	>	FailingFibAction f = new FailingFibAction(8);
1016	>	FibAction g = new FibAction(9);
1017	>	FibAction h = new FibAction(7);
1018	>	HashSet set = new HashSet();
1019	>	set.add(f);
1020	>	set.add(g);
1021	>	set.add(h);
1022		try {
800	–	FailingFibAction f = new FailingFibAction(8);
801	–	FibAction g = new FibAction(9);
802	–	FibAction h = new FibAction(7);
803	–	HashSet set = new HashSet();
804	–	set.add(f);
805	–	set.add(g);
806	–	set.add(h);
1023		invokeAll(set);
1024		shouldThrow();
1025		} catch (FJException success) {
1026	+	checkCompletedAbnormally(f, success);
1027		}
1028		}};
1029	<	mainPool.invoke(a);
1029	>	testInvokeOnPool(mainPool(), a);
1030		}
1031
1032		/**
#	Line 817 | Line 1034 | public class RecursiveActionTest extends
1034		* and suppresses execution
1035		*/
1036		public void testTryUnfork() {
1037	<	RecursiveAction a = new RecursiveAction() {
1038	<	public void compute() {
1037	>	RecursiveAction a = new CheckedRecursiveAction() {
1038	>	protected void realCompute() {
1039		FibAction g = new FibAction(9);
1040	<	g.fork();
1040	>	assertSame(g, g.fork());
1041		FibAction f = new FibAction(8);
1042	<	f.fork();
1043	<	threadAssertTrue(f.tryUnfork());
1042	>	assertSame(f, f.fork());
1043	>	assertTrue(f.tryUnfork());
1044		helpQuiesce();
1045	<	threadAssertFalse(f.isDone());
1046	<	threadAssertTrue(g.isDone());
1045	>	checkNotDone(f);
1046	>	checkCompletedNormally(g);
1047		}};
1048	<	singletonPool.invoke(a);
1048	>	testInvokeOnPool(singletonPool(), a);
1049		}
1050
1051		/**
#	Line 836 | Line 1053 | public class RecursiveActionTest extends
1053		* there are more tasks than threads
1054		*/
1055		public void testGetSurplusQueuedTaskCount() {
1056	<	RecursiveAction a = new RecursiveAction() {
1057	<	public void compute() {
1056	>	RecursiveAction a = new CheckedRecursiveAction() {
1057	>	protected void realCompute() {
1058		FibAction h = new FibAction(7);
1059	<	h.fork();
1059	>	assertSame(h, h.fork());
1060		FibAction g = new FibAction(9);
1061	<	g.fork();
1061	>	assertSame(g, g.fork());
1062		FibAction f = new FibAction(8);
1063	<	f.fork();
1064	<	threadAssertTrue(getSurplusQueuedTaskCount() > 0);
1063	>	assertSame(f, f.fork());
1064	>	assertTrue(getSurplusQueuedTaskCount() > 0);
1065		helpQuiesce();
1066	+	assertEquals(0, getSurplusQueuedTaskCount());
1067	+	checkCompletedNormally(f);
1068	+	checkCompletedNormally(g);
1069	+	checkCompletedNormally(h);
1070		}};
1071	<	singletonPool.invoke(a);
1071	>	testInvokeOnPool(singletonPool(), a);
1072		}
1073
1074		/**
1075		* peekNextLocalTask returns most recent unexecuted task.
1076		*/
1077		public void testPeekNextLocalTask() {
1078	<	RecursiveAction a = new RecursiveAction() {
1079	<	public void compute() {
1078	>	RecursiveAction a = new CheckedRecursiveAction() {
1079	>	protected void realCompute() {
1080		FibAction g = new FibAction(9);
1081	<	g.fork();
1081	>	assertSame(g, g.fork());
1082		FibAction f = new FibAction(8);
1083	<	f.fork();
1084	<	threadAssertTrue(peekNextLocalTask() == f);
1085	<	f.join();
1086	<	threadAssertTrue(f.isDone());
1083	>	assertSame(f, f.fork());
1084	>	assertSame(f, peekNextLocalTask());
1085	>	assertNull(f.join());
1086	>	checkCompletedNormally(f);
1087		helpQuiesce();
1088	+	checkCompletedNormally(f);
1089	+	checkCompletedNormally(g);
1090		}};
1091	<	singletonPool.invoke(a);
1091	>	testInvokeOnPool(singletonPool(), a);
1092		}
1093
1094		/**
#	Line 873 | Line 1096 | public class RecursiveActionTest extends
1096		* without executing it
1097		*/
1098		public void testPollNextLocalTask() {
1099	<	RecursiveAction a = new RecursiveAction() {
1100	<	public void compute() {
1099	>	RecursiveAction a = new CheckedRecursiveAction() {
1100	>	protected void realCompute() {
1101		FibAction g = new FibAction(9);
1102	<	g.fork();
1102	>	assertSame(g, g.fork());
1103		FibAction f = new FibAction(8);
1104	<	f.fork();
1105	<	threadAssertTrue(pollNextLocalTask() == f);
1104	>	assertSame(f, f.fork());
1105	>	assertSame(f, pollNextLocalTask());
1106		helpQuiesce();
1107	<	threadAssertFalse(f.isDone());
1107	>	checkNotDone(f);
1108	>	checkCompletedNormally(g);
1109		}};
1110	<	singletonPool.invoke(a);
1110	>	testInvokeOnPool(singletonPool(), a);
1111		}
1112
1113		/**
1114	<	* pollTask returns an unexecuted task
891	<	* without executing it
1114	>	* pollTask returns an unexecuted task without executing it
1115		*/
1116		public void testPollTask() {
1117	<	RecursiveAction a = new RecursiveAction() {
1118	<	public void compute() {
1117	>	RecursiveAction a = new CheckedRecursiveAction() {
1118	>	protected void realCompute() {
1119		FibAction g = new FibAction(9);
1120	<	g.fork();
1120	>	assertSame(g, g.fork());
1121		FibAction f = new FibAction(8);
1122	<	f.fork();
1123	<	threadAssertTrue(pollTask() == f);
1122	>	assertSame(f, f.fork());
1123	>	assertSame(f, pollTask());
1124		helpQuiesce();
1125	<	threadAssertFalse(f.isDone());
1126	<	threadAssertTrue(g.isDone());
1125	>	checkNotDone(f);
1126	>	checkCompletedNormally(g);
1127		}};
1128	<	singletonPool.invoke(a);
1128	>	testInvokeOnPool(singletonPool(), a);
1129		}
1130
1131		/**
1132		* peekNextLocalTask returns least recent unexecuted task in async mode
1133		*/
1134		public void testPeekNextLocalTaskAsync() {
1135	<	RecursiveAction a = new RecursiveAction() {
1136	<	public void compute() {
1135	>	RecursiveAction a = new CheckedRecursiveAction() {
1136	>	protected void realCompute() {
1137		FibAction g = new FibAction(9);
1138	<	g.fork();
1138	>	assertSame(g, g.fork());
1139		FibAction f = new FibAction(8);
1140	<	f.fork();
1141	<	threadAssertTrue(peekNextLocalTask() == g);
1142	<	f.join();
1140	>	assertSame(f, f.fork());
1141	>	assertSame(g, peekNextLocalTask());
1142	>	assertNull(f.join());
1143		helpQuiesce();
1144	<	threadAssertTrue(f.isDone());
1144	>	checkCompletedNormally(f);
1145	>	checkCompletedNormally(g);
1146		}};
1147	<	asyncSingletonPool.invoke(a);
1147	>	testInvokeOnPool(asyncSingletonPool(), a);
1148		}
1149
1150		/**
1151	<	* pollNextLocalTask returns least recent unexecuted task
1152	<	* without executing it, in async mode
1151	>	* pollNextLocalTask returns least recent unexecuted task without
1152	>	* executing it, in async mode
1153		*/
1154		public void testPollNextLocalTaskAsync() {
1155	<	RecursiveAction a = new RecursiveAction() {
1156	<	public void compute() {
1155	>	RecursiveAction a = new CheckedRecursiveAction() {
1156	>	protected void realCompute() {
1157		FibAction g = new FibAction(9);
1158	<	g.fork();
1158	>	assertSame(g, g.fork());
1159		FibAction f = new FibAction(8);
1160	<	f.fork();
1161	<	threadAssertTrue(pollNextLocalTask() == g);
1160	>	assertSame(f, f.fork());
1161	>	assertSame(g, pollNextLocalTask());
1162		helpQuiesce();
1163	<	threadAssertTrue(f.isDone());
1164	<	threadAssertFalse(g.isDone());
1163	>	checkCompletedNormally(f);
1164	>	checkNotDone(g);
1165		}};
1166	<	asyncSingletonPool.invoke(a);
1166	>	testInvokeOnPool(asyncSingletonPool(), a);
1167		}
1168
1169		/**
1170	<	* pollTask returns an unexecuted task
1171	<	* without executing it, in async mode
1170	>	* pollTask returns an unexecuted task without executing it, in
1171	>	* async mode
1172		*/
1173		public void testPollTaskAsync() {
1174	<	RecursiveAction a = new RecursiveAction() {
1175	<	public void compute() {
1174	>	RecursiveAction a = new CheckedRecursiveAction() {
1175	>	protected void realCompute() {
1176		FibAction g = new FibAction(9);
1177	<	g.fork();
1177	>	assertSame(g, g.fork());
1178		FibAction f = new FibAction(8);
1179	<	f.fork();
1180	<	threadAssertTrue(pollTask() == g);
1179	>	assertSame(f, f.fork());
1180	>	assertSame(g, pollTask());
1181		helpQuiesce();
1182	<	threadAssertTrue(f.isDone());
1183	<	threadAssertFalse(g.isDone());
1182	>	checkCompletedNormally(f);
1183	>	checkNotDone(g);
1184		}};
1185	<	asyncSingletonPool.invoke(a);
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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