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Comparing jsr166/src/test/tck/RecursiveActionTest.java (file contents):
Revision 1.18 by jsr166, Thu Sep 16 00:52:49 2010 UTC vs.
Revision 1.54 by jsr166, Mon May 28 21:49:32 2018 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		*/
6
7	<	import junit.framework.*;
7	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
8	>
9	>	import java.util.Arrays;
10	>	import java.util.HashSet;
11		import java.util.concurrent.CancellationException;
12		import java.util.concurrent.ExecutionException;
13		import java.util.concurrent.ForkJoinPool;
14	+	import java.util.concurrent.ForkJoinTask;
15		import java.util.concurrent.ForkJoinWorkerThread;
16		import java.util.concurrent.RecursiveAction;
17	<	import java.util.concurrent.TimeUnit;
18	<	import java.util.HashSet;
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() {
#	Line 38 | Line 46 | public class RecursiveActionTest extends
46		}
47
48		private void testInvokeOnPool(ForkJoinPool pool, RecursiveAction a) {
49	<	try {
50	<	assertFalse(a.isDone());
43	<	assertFalse(a.isCompletedNormally());
44	<	assertFalse(a.isCompletedAbnormally());
45	<	assertFalse(a.isCancelled());
46	<	assertNull(a.getException());
49	>	try (PoolCleaner cleaner = cleaner(pool)) {
50	>	checkNotDone(a);
51
52		assertNull(pool.invoke(a));
53
54	<	assertTrue(a.isDone());
51	<	assertTrue(a.isCompletedNormally());
52	<	assertFalse(a.isCompletedAbnormally());
53	<	assertFalse(a.isCancelled());
54	<	assertNull(a.getException());
55	<	} finally {
56	<	joinPool(pool);
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 (Throwable fail) { threadUnexpectedException(fail); }
103		}
104
105	<	// A simple recursive action for testing
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		final class FibAction extends CheckedRecursiveAction {
171		final int number;
172		int result;
173		FibAction(int n) { number = n; }
174	<	public void realCompute() {
174	>	protected void realCompute() {
175		int n = number;
176		if (n <= 1)
177		result = n;
#	Line 79 | 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 104 | Line 209 | public class RecursiveActionTest extends
209		*/
210		public void testInvoke() {
211		RecursiveAction a = new CheckedRecursiveAction() {
212	<	public void realCompute() {
212	>	protected void realCompute() {
213		FibAction f = new FibAction(8);
214		assertNull(f.invoke());
215		assertEquals(21, f.result);
216	<	assertTrue(f.isDone());
112	<	assertFalse(f.isCancelled());
113	<	assertFalse(f.isCompletedAbnormally());
114	<	assertNull(f.getRawResult());
216	>	checkCompletedNormally(f);
217		}};
218		testInvokeOnPool(mainPool(), a);
219		}
#	Line 123 | Line 225 | public class RecursiveActionTest extends
225		*/
226		public void testQuietlyInvoke() {
227		RecursiveAction a = new CheckedRecursiveAction() {
228	<	public void realCompute() {
228	>	protected void realCompute() {
229		FibAction f = new FibAction(8);
230		f.quietlyInvoke();
231		assertEquals(21, f.result);
232	<	assertTrue(f.isDone());
131	<	assertFalse(f.isCancelled());
132	<	assertFalse(f.isCompletedAbnormally());
133	<	assertNull(f.getRawResult());
232	>	checkCompletedNormally(f);
233		}};
234		testInvokeOnPool(mainPool(), a);
235		}
#	Line 140 | Line 239 | public class RecursiveActionTest extends
239		*/
240		public void testForkJoin() {
241		RecursiveAction a = new CheckedRecursiveAction() {
242	<	public void realCompute() {
242	>	protected void realCompute() {
243		FibAction f = new FibAction(8);
244		assertSame(f, f.fork());
245		assertNull(f.join());
246		assertEquals(21, f.result);
247	<	assertTrue(f.isDone());
149	<	assertNull(f.getRawResult());
247	>	checkCompletedNormally(f);
248		}};
249		testInvokeOnPool(mainPool(), a);
250		}
251
252		/**
253	+	* join/quietlyJoin of a forked task succeeds in the presence of interrupts
254	+	*/
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	+	f.join();
275	+	shouldThrow();
276	+	} catch (CancellationException success) {
277	+	Thread.interrupted();
278	+	checkCancelled(f);
279	+	}
280	+
281	+	f = new FibAction(8);
282	+	f.completeExceptionally(new FJException());
283	+	assertSame(f, f.fork());
284	+	currentThread.interrupt();
285	+	try {
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	+	testInvokeOnPool(mainPool(), a);
319	+	a.reinitialize();
320	+	testInvokeOnPool(singletonPool(), a);
321	+	}
322	+
323	+	/**
324	+	* join/quietlyJoin of a forked task when not in ForkJoinPool
325	+	* succeeds in the presence of interrupts
326	+	*/
327	+	public void testJoinIgnoresInterruptsOutsideForkJoinPool() {
328	+	final SynchronousQueue<FibAction[]> sq = new SynchronousQueue<>();
329	+	RecursiveAction a = new CheckedRecursiveAction() {
330	+	protected void realCompute() throws InterruptedException {
331	+	FibAction[] fibActions = new FibAction[6];
332	+	for (int i = 0; i < fibActions.length; i++)
333	+	fibActions[i] = new FibAction(8);
334	+
335	+	fibActions[1].cancel(false);
336	+	fibActions[2].completeExceptionally(new FJException());
337	+	fibActions[4].cancel(true);
338	+	fibActions[5].completeExceptionally(new FJException());
339	+
340	+	for (FibAction fibAction : fibActions)
341	+	fibAction.fork();
342	+
343	+	sq.put(fibActions);
344	+
345	+	helpQuiesce();
346	+	}};
347	+
348	+	Runnable r = new CheckedRunnable() {
349	+	public void realRun() throws InterruptedException {
350	+	FibAction[] fibActions = sq.take();
351	+	FibAction f;
352	+	final Thread currentThread = Thread.currentThread();
353	+
354	+	// test join() ------------
355	+
356	+	f = fibActions[0];
357	+	assertFalse(ForkJoinTask.inForkJoinPool());
358	+	currentThread.interrupt();
359	+	assertNull(f.join());
360	+	assertTrue(Thread.interrupted());
361	+	assertEquals(21, f.result);
362	+	checkCompletedNormally(f);
363	+
364	+	f = fibActions[1];
365	+	currentThread.interrupt();
366	+	try {
367	+	f.join();
368	+	shouldThrow();
369	+	} catch (CancellationException success) {
370	+	assertTrue(Thread.interrupted());
371	+	checkCancelled(f);
372	+	}
373	+
374	+	f = fibActions[2];
375	+	currentThread.interrupt();
376	+	try {
377	+	f.join();
378	+	shouldThrow();
379	+	} catch (FJException success) {
380	+	assertTrue(Thread.interrupted());
381	+	checkCompletedAbnormally(f, success);
382	+	}
383	+
384	+	// test quietlyJoin() ---------
385	+
386	+	f = fibActions[3];
387	+	currentThread.interrupt();
388	+	f.quietlyJoin();
389	+	assertTrue(Thread.interrupted());
390	+	assertEquals(21, f.result);
391	+	checkCompletedNormally(f);
392	+
393	+	f = fibActions[4];
394	+	currentThread.interrupt();
395	+	f.quietlyJoin();
396	+	assertTrue(Thread.interrupted());
397	+	checkCancelled(f);
398	+
399	+	f = fibActions[5];
400	+	currentThread.interrupt();
401	+	f.quietlyJoin();
402	+	assertTrue(Thread.interrupted());
403	+	assertTrue(f.getException() instanceof FJException);
404	+	checkCompletedAbnormally(f, f.getException());
405	+	}};
406	+
407	+	Thread t;
408	+
409	+	t = newStartedThread(r);
410	+	testInvokeOnPool(mainPool(), a);
411	+	awaitTermination(t);
412	+
413	+	a.reinitialize();
414	+	t = newStartedThread(r);
415	+	testInvokeOnPool(singletonPool(), a);
416	+	awaitTermination(t);
417	+	}
418	+
419	+	/**
420		* get of a forked task returns when task completes
421		*/
422		public void testForkGet() {
423		RecursiveAction a = new CheckedRecursiveAction() {
424	<	public void realCompute() throws Exception {
424	>	protected void realCompute() throws Exception {
425		FibAction f = new FibAction(8);
426		assertSame(f, f.fork());
427		assertNull(f.get());
428		assertEquals(21, f.result);
429	<	assertTrue(f.isDone());
429	>	checkCompletedNormally(f);
430		}};
431		testInvokeOnPool(mainPool(), a);
432		}
#	Line 171 | Line 436 | public class RecursiveActionTest extends
436		*/
437		public void testForkTimedGet() {
438		RecursiveAction a = new CheckedRecursiveAction() {
439	<	public void realCompute() throws Exception {
439	>	protected void realCompute() throws Exception {
440		FibAction f = new FibAction(8);
441		assertSame(f, f.fork());
442	<	assertNull(f.get(5L, TimeUnit.SECONDS));
442	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
443		assertEquals(21, f.result);
444	<	assertTrue(f.isDone());
444	>	checkCompletedNormally(f);
445		}};
446		testInvokeOnPool(mainPool(), a);
447		}
#	Line 186 | Line 451 | public class RecursiveActionTest extends
451		*/
452		public void testForkTimedGetNPE() {
453		RecursiveAction a = new CheckedRecursiveAction() {
454	<	public void realCompute() throws Exception {
454	>	protected void realCompute() throws Exception {
455		FibAction f = new FibAction(8);
456		assertSame(f, f.fork());
457		try {
458	<	f.get(5L, null);
458	>	f.get(randomTimeout(), null);
459		shouldThrow();
460		} catch (NullPointerException success) {}
461		}};
#	Line 202 | Line 467 | public class RecursiveActionTest extends
467		*/
468		public void testForkQuietlyJoin() {
469		RecursiveAction a = new CheckedRecursiveAction() {
470	<	public void realCompute() {
470	>	protected void realCompute() {
471		FibAction f = new FibAction(8);
472		assertSame(f, f.fork());
473		f.quietlyJoin();
474		assertEquals(21, f.result);
475	<	assertTrue(f.isDone());
475	>	checkCompletedNormally(f);
476		}};
477		testInvokeOnPool(mainPool(), a);
478		}
479
215	–
480		/**
481		* helpQuiesce returns when tasks are complete.
482		* getQueuedTaskCount returns 0 when quiescent
483		*/
484		public void testForkHelpQuiesce() {
485		RecursiveAction a = new CheckedRecursiveAction() {
486	<	public void realCompute() {
486	>	protected void realCompute() {
487		FibAction f = new FibAction(8);
488		assertSame(f, f.fork());
489	<	f.helpQuiesce();
489	>	helpQuiesce();
490	>	while (!f.isDone()) // wait out race
491	>	;
492		assertEquals(21, f.result);
227	–	assertTrue(f.isDone());
493		assertEquals(0, getQueuedTaskCount());
494	+	checkCompletedNormally(f);
495		}};
496		testInvokeOnPool(mainPool(), a);
497		}
498
233	–
499		/**
500		* invoke task throws exception when task completes abnormally
501		*/
502		public void testAbnormalInvoke() {
503		RecursiveAction a = new CheckedRecursiveAction() {
504	<	public void realCompute() {
504	>	protected void realCompute() {
505		FailingFibAction f = new FailingFibAction(8);
506		try {
507		f.invoke();
508		shouldThrow();
509	<	} catch (FJException success) {}
509	>	} catch (FJException success) {
510	>	checkCompletedAbnormally(f, success);
511	>	}
512		}};
513		testInvokeOnPool(mainPool(), a);
514		}
#	Line 251 | Line 518 | public class RecursiveActionTest extends
518		*/
519		public void testAbnormalQuietlyInvoke() {
520		RecursiveAction a = new CheckedRecursiveAction() {
521	<	public void realCompute() {
521	>	protected void realCompute() {
522		FailingFibAction f = new FailingFibAction(8);
523		f.quietlyInvoke();
524	<	assertTrue(f.isDone());
524	>	assertTrue(f.getException() instanceof FJException);
525	>	checkCompletedAbnormally(f, f.getException());
526		}};
527		testInvokeOnPool(mainPool(), a);
528		}
#	Line 264 | Line 532 | public class RecursiveActionTest extends
532		*/
533		public void testAbnormalForkJoin() {
534		RecursiveAction a = new CheckedRecursiveAction() {
535	<	public void realCompute() {
535	>	protected void realCompute() {
536		FailingFibAction f = new FailingFibAction(8);
537		assertSame(f, f.fork());
538		try {
539		f.join();
540		shouldThrow();
541	<	} catch (FJException success) {}
541	>	} catch (FJException success) {
542	>	checkCompletedAbnormally(f, success);
543	>	}
544		}};
545		testInvokeOnPool(mainPool(), a);
546		}
#	Line 280 | Line 550 | public class RecursiveActionTest extends
550		*/
551		public void testAbnormalForkGet() {
552		RecursiveAction a = new CheckedRecursiveAction() {
553	<	public void realCompute() throws Exception {
553	>	protected void realCompute() throws Exception {
554		FailingFibAction f = new FailingFibAction(8);
555		assertSame(f, f.fork());
556		try {
557		f.get();
558		shouldThrow();
559	<	} catch (ExecutionException success) {}
559	>	} catch (ExecutionException success) {
560	>	Throwable cause = success.getCause();
561	>	assertTrue(cause instanceof FJException);
562	>	checkCompletedAbnormally(f, cause);
563	>	}
564		}};
565		testInvokeOnPool(mainPool(), a);
566		}
#	Line 296 | Line 570 | public class RecursiveActionTest extends
570		*/
571		public void testAbnormalForkTimedGet() {
572		RecursiveAction a = new CheckedRecursiveAction() {
573	<	public void realCompute() throws Exception {
573	>	protected void realCompute() throws Exception {
574		FailingFibAction f = new FailingFibAction(8);
575		assertSame(f, f.fork());
576		try {
577	<	f.get(5L, TimeUnit.SECONDS);
577	>	f.get(LONG_DELAY_MS, MILLISECONDS);
578		shouldThrow();
579	<	} catch (ExecutionException success) {}
579	>	} catch (ExecutionException success) {
580	>	Throwable cause = success.getCause();
581	>	assertTrue(cause instanceof FJException);
582	>	checkCompletedAbnormally(f, cause);
583	>	}
584		}};
585		testInvokeOnPool(mainPool(), a);
586		}
#	Line 312 | Line 590 | public class RecursiveActionTest extends
590		*/
591		public void testAbnormalForkQuietlyJoin() {
592		RecursiveAction a = new CheckedRecursiveAction() {
593	<	public void realCompute() {
593	>	protected void realCompute() {
594		FailingFibAction f = new FailingFibAction(8);
595		assertSame(f, f.fork());
596		f.quietlyJoin();
319	–	assertTrue(f.isDone());
320	–	assertTrue(f.isCompletedAbnormally());
597		assertTrue(f.getException() instanceof FJException);
598	+	checkCompletedAbnormally(f, f.getException());
599		}};
600		testInvokeOnPool(mainPool(), a);
601		}
#	Line 328 | Line 605 | public class RecursiveActionTest extends
605		*/
606		public void testCancelledInvoke() {
607		RecursiveAction a = new CheckedRecursiveAction() {
608	<	public void realCompute() {
608	>	protected void realCompute() {
609		FibAction f = new FibAction(8);
610		assertTrue(f.cancel(true));
611		try {
612		f.invoke();
613		shouldThrow();
614	<	} catch (CancellationException success) {}
614	>	} catch (CancellationException success) {
615	>	checkCancelled(f);
616	>	}
617		}};
618		testInvokeOnPool(mainPool(), a);
619		}
#	Line 344 | Line 623 | public class RecursiveActionTest extends
623		*/
624		public void testCancelledForkJoin() {
625		RecursiveAction a = new CheckedRecursiveAction() {
626	<	public void realCompute() {
626	>	protected void realCompute() {
627		FibAction f = new FibAction(8);
628		assertTrue(f.cancel(true));
629		assertSame(f, f.fork());
630		try {
631		f.join();
632		shouldThrow();
633	<	} catch (CancellationException success) {}
633	>	} catch (CancellationException success) {
634	>	checkCancelled(f);
635	>	}
636		}};
637		testInvokeOnPool(mainPool(), a);
638		}
#	Line 361 | Line 642 | public class RecursiveActionTest extends
642		*/
643		public void testCancelledForkGet() {
644		RecursiveAction a = new CheckedRecursiveAction() {
645	<	public void realCompute() throws Exception {
645	>	protected void realCompute() throws Exception {
646		FibAction f = new FibAction(8);
647		assertTrue(f.cancel(true));
648		assertSame(f, f.fork());
649		try {
650		f.get();
651		shouldThrow();
652	<	} catch (CancellationException success) {}
652	>	} catch (CancellationException success) {
653	>	checkCancelled(f);
654	>	}
655		}};
656		testInvokeOnPool(mainPool(), a);
657		}
#	Line 378 | Line 661 | public class RecursiveActionTest extends
661		*/
662		public void testCancelledForkTimedGet() {
663		RecursiveAction a = new CheckedRecursiveAction() {
664	<	public void realCompute() throws Exception {
664	>	protected void realCompute() throws Exception {
665		FibAction f = new FibAction(8);
666		assertTrue(f.cancel(true));
667		assertSame(f, f.fork());
668		try {
669	<	f.get(5L, TimeUnit.SECONDS);
669	>	f.get(LONG_DELAY_MS, MILLISECONDS);
670		shouldThrow();
671	<	} catch (CancellationException success) {}
671	>	} catch (CancellationException success) {
672	>	checkCancelled(f);
673	>	}
674		}};
675		testInvokeOnPool(mainPool(), a);
676		}
#	Line 395 | Line 680 | public class RecursiveActionTest extends
680		*/
681		public void testCancelledForkQuietlyJoin() {
682		RecursiveAction a = new CheckedRecursiveAction() {
683	<	public void realCompute() {
683	>	protected void realCompute() {
684		FibAction f = new FibAction(8);
685		assertTrue(f.cancel(true));
686		assertSame(f, f.fork());
687		f.quietlyJoin();
688	<	assertTrue(f.isDone());
404	<	assertTrue(f.isCompletedAbnormally());
405	<	assertTrue(f.isCancelled());
406	<	assertTrue(f.getException() instanceof CancellationException);
688	>	checkCancelled(f);
689		}};
690		testInvokeOnPool(mainPool(), a);
691		}
#	Line 414 | Line 696 | public class RecursiveActionTest extends
696		public void testGetPool() {
697		final ForkJoinPool mainPool = mainPool();
698		RecursiveAction a = new CheckedRecursiveAction() {
699	<	public void realCompute() {
699	>	protected void realCompute() {
700		assertSame(mainPool, getPool());
701		}};
702		testInvokeOnPool(mainPool, a);
#	Line 425 | Line 707 | public class RecursiveActionTest extends
707		*/
708		public void testGetPool2() {
709		RecursiveAction a = new CheckedRecursiveAction() {
710	<	public void realCompute() {
710	>	protected void realCompute() {
711		assertNull(getPool());
712		}};
713		assertNull(a.invoke());
#	Line 436 | Line 718 | public class RecursiveActionTest extends
718		*/
719		public void testInForkJoinPool() {
720		RecursiveAction a = new CheckedRecursiveAction() {
721	<	public void realCompute() {
721	>	protected void realCompute() {
722		assertTrue(inForkJoinPool());
723		}};
724		testInvokeOnPool(mainPool(), a);
#	Line 447 | Line 729 | public class RecursiveActionTest extends
729		*/
730		public void testInForkJoinPool2() {
731		RecursiveAction a = new CheckedRecursiveAction() {
732	<	public void realCompute() {
732	>	protected void realCompute() {
733		assertFalse(inForkJoinPool());
734		}};
735		assertNull(a.invoke());
#	Line 459 | Line 741 | public class RecursiveActionTest extends
741		public void testWorkerGetPool() {
742		final ForkJoinPool mainPool = mainPool();
743		RecursiveAction a = new CheckedRecursiveAction() {
744	<	public void realCompute() {
744	>	protected void realCompute() {
745		ForkJoinWorkerThread w =
746		(ForkJoinWorkerThread) Thread.currentThread();
747		assertSame(mainPool, w.getPool());
#	Line 473 | Line 755 | public class RecursiveActionTest extends
755		public void testWorkerGetPoolIndex() {
756		final ForkJoinPool mainPool = mainPool();
757		RecursiveAction a = new CheckedRecursiveAction() {
758	<	public void realCompute() {
758	>	protected void realCompute() {
759		ForkJoinWorkerThread w =
760	<	(ForkJoinWorkerThread)(Thread.currentThread());
761	<	int idx = w.getPoolIndex();
762	<	assertTrue(idx >= 0);
763	<	assertTrue(idx < mainPool.getPoolSize());
760	>	(ForkJoinWorkerThread) Thread.currentThread();
761	>	assertTrue(w.getPoolIndex() >= 0);
762	>	// pool size can shrink after assigning index, so cannot check
763	>	// assertTrue(w.getPoolIndex() < mainPool.getPoolSize());
764		}};
765		testInvokeOnPool(mainPool, a);
766		}
767
486	–
768		/**
769		* setRawResult(null) succeeds
770		*/
771		public void testSetRawResult() {
772		RecursiveAction a = new CheckedRecursiveAction() {
773	<	public void realCompute() {
773	>	protected void realCompute() {
774		setRawResult(null);
775	+	assertNull(getRawResult());
776		}};
777		assertNull(a.invoke());
778		}
779
780		/**
781	<	* A reinitialized task may be re-invoked
781	>	* A reinitialized normally completed task may be re-invoked
782		*/
783		public void testReinitialize() {
784		RecursiveAction a = new CheckedRecursiveAction() {
785	<	public void realCompute() {
785	>	protected void realCompute() {
786		FibAction f = new FibAction(8);
787	<	assertNull(f.invoke());
788	<	assertEquals(21, f.result);
789	<	assertTrue(f.isDone());
790	<	assertFalse(f.isCancelled());
791	<	assertFalse(f.isCompletedAbnormally());
792	<	f.reinitialize();
793	<	assertNull(f.invoke());
794	<	assertEquals(21, f.result);
787	>	checkNotDone(f);
788	>
789	>	for (int i = 0; i < 3; i++) {
790	>	assertNull(f.invoke());
791	>	assertEquals(21, f.result);
792	>	checkCompletedNormally(f);
793	>	f.reinitialize();
794	>	checkNotDone(f);
795	>	}
796	>	}};
797	>	testInvokeOnPool(mainPool(), a);
798	>	}
799	>
800	>	/**
801	>	* A reinitialized abnormally completed task may be re-invoked
802	>	*/
803	>	public void testReinitializeAbnormal() {
804	>	RecursiveAction a = new CheckedRecursiveAction() {
805	>	protected void realCompute() {
806	>	FailingFibAction f = new FailingFibAction(8);
807	>	checkNotDone(f);
808	>
809	>	for (int i = 0; i < 3; i++) {
810	>	try {
811	>	f.invoke();
812	>	shouldThrow();
813	>	} catch (FJException success) {
814	>	checkCompletedAbnormally(f, success);
815	>	}
816	>	f.reinitialize();
817	>	checkNotDone(f);
818	>	}
819		}};
820		testInvokeOnPool(mainPool(), a);
821		}
#	Line 519 | Line 825 | public class RecursiveActionTest extends
825		*/
826		public void testCompleteExceptionally() {
827		RecursiveAction a = new CheckedRecursiveAction() {
828	<	public void realCompute() {
828	>	protected void realCompute() {
829		FibAction f = new FibAction(8);
830		f.completeExceptionally(new FJException());
831		try {
832		f.invoke();
833		shouldThrow();
834	<	} catch (FJException success) {}
834	>	} catch (FJException success) {
835	>	checkCompletedAbnormally(f, success);
836	>	}
837		}};
838		testInvokeOnPool(mainPool(), a);
839		}
#	Line 535 | Line 843 | public class RecursiveActionTest extends
843		*/
844		public void testComplete() {
845		RecursiveAction a = new CheckedRecursiveAction() {
846	<	public void realCompute() {
846	>	protected void realCompute() {
847		FibAction f = new FibAction(8);
848		f.complete(null);
849		assertNull(f.invoke());
542	–	assertTrue(f.isDone());
850		assertEquals(0, f.result);
851	+	checkCompletedNormally(f);
852		}};
853		testInvokeOnPool(mainPool(), a);
854		}
#	Line 550 | Line 858 | public class RecursiveActionTest extends
858		*/
859		public void testInvokeAll2() {
860		RecursiveAction a = new CheckedRecursiveAction() {
861	<	public void realCompute() {
861	>	protected void realCompute() {
862		FibAction f = new FibAction(8);
863		FibAction g = new FibAction(9);
864		invokeAll(f, g);
865	<	assertTrue(f.isDone());
865	>	checkCompletedNormally(f);
866		assertEquals(21, f.result);
867	<	assertTrue(g.isDone());
867	>	checkCompletedNormally(g);
868		assertEquals(34, g.result);
869		}};
870		testInvokeOnPool(mainPool(), a);
#	Line 567 | Line 875 | public class RecursiveActionTest extends
875		*/
876		public void testInvokeAll1() {
877		RecursiveAction a = new CheckedRecursiveAction() {
878	<	public void realCompute() {
878	>	protected void realCompute() {
879		FibAction f = new FibAction(8);
880		invokeAll(f);
881	<	assertTrue(f.isDone());
881	>	checkCompletedNormally(f);
882		assertEquals(21, f.result);
883		}};
884		testInvokeOnPool(mainPool(), a);
#	Line 581 | Line 889 | public class RecursiveActionTest extends
889		*/
890		public void testInvokeAll3() {
891		RecursiveAction a = new CheckedRecursiveAction() {
892	<	public void realCompute() {
892	>	protected void realCompute() {
893		FibAction f = new FibAction(8);
894		FibAction g = new FibAction(9);
895		FibAction h = new FibAction(7);
896		invokeAll(f, g, h);
897		assertTrue(f.isDone());
590	–	assertEquals(21, f.result);
898		assertTrue(g.isDone());
592	–	assertEquals(34, g.result);
899		assertTrue(h.isDone());
900	+	checkCompletedNormally(f);
901	+	assertEquals(21, f.result);
902	+	checkCompletedNormally(g);
903	+	assertEquals(34, g.result);
904	+	checkCompletedNormally(g);
905		assertEquals(13, h.result);
906		}};
907		testInvokeOnPool(mainPool(), a);
#	Line 601 | Line 912 | public class RecursiveActionTest extends
912		*/
913		public void testInvokeAllCollection() {
914		RecursiveAction a = new CheckedRecursiveAction() {
915	<	public void realCompute() {
915	>	protected void realCompute() {
916		FibAction f = new FibAction(8);
917		FibAction g = new FibAction(9);
918		FibAction h = new FibAction(7);
#	Line 611 | Line 922 | public class RecursiveActionTest extends
922		set.add(h);
923		invokeAll(set);
924		assertTrue(f.isDone());
614	–	assertEquals(21, f.result);
925		assertTrue(g.isDone());
616	–	assertEquals(34, g.result);
926		assertTrue(h.isDone());
927	+	checkCompletedNormally(f);
928	+	assertEquals(21, f.result);
929	+	checkCompletedNormally(g);
930	+	assertEquals(34, g.result);
931	+	checkCompletedNormally(g);
932		assertEquals(13, h.result);
933		}};
934		testInvokeOnPool(mainPool(), a);
935		}
936
623	–
937		/**
938		* invokeAll(tasks) with any null task throws NPE
939		*/
940		public void testInvokeAllNPE() {
941		RecursiveAction a = new CheckedRecursiveAction() {
942	<	public void realCompute() {
942	>	protected void realCompute() {
943		FibAction f = new FibAction(8);
944		FibAction g = new FibAction(9);
945		FibAction h = null;
#	Line 643 | Line 956 | public class RecursiveActionTest extends
956		*/
957		public void testAbnormalInvokeAll2() {
958		RecursiveAction a = new CheckedRecursiveAction() {
959	<	public void realCompute() {
959	>	protected void realCompute() {
960		FibAction f = new FibAction(8);
961		FailingFibAction g = new FailingFibAction(9);
962		try {
963		invokeAll(f, g);
964		shouldThrow();
965	<	} catch (FJException success) {}
965	>	} catch (FJException success) {
966	>	checkCompletedAbnormally(g, success);
967	>	}
968		}};
969		testInvokeOnPool(mainPool(), a);
970		}
#	Line 659 | Line 974 | public class RecursiveActionTest extends
974		*/
975		public void testAbnormalInvokeAll1() {
976		RecursiveAction a = new CheckedRecursiveAction() {
977	<	public void realCompute() {
977	>	protected void realCompute() {
978		FailingFibAction g = new FailingFibAction(9);
979		try {
980		invokeAll(g);
981		shouldThrow();
982	<	} catch (FJException success) {}
982	>	} catch (FJException success) {
983	>	checkCompletedAbnormally(g, success);
984	>	}
985		}};
986		testInvokeOnPool(mainPool(), a);
987		}
#	Line 674 | Line 991 | public class RecursiveActionTest extends
991		*/
992		public void testAbnormalInvokeAll3() {
993		RecursiveAction a = new CheckedRecursiveAction() {
994	<	public void realCompute() {
994	>	protected void realCompute() {
995		FibAction f = new FibAction(8);
996		FailingFibAction g = new FailingFibAction(9);
997		FibAction h = new FibAction(7);
998		try {
999		invokeAll(f, g, h);
1000		shouldThrow();
1001	<	} catch (FJException success) {}
1001	>	} catch (FJException success) {
1002	>	checkCompletedAbnormally(g, success);
1003	>	}
1004		}};
1005		testInvokeOnPool(mainPool(), a);
1006		}
#	Line 691 | Line 1010 | public class RecursiveActionTest extends
1010		*/
1011		public void testAbnormalInvokeAllCollection() {
1012		RecursiveAction a = new CheckedRecursiveAction() {
1013	<	public void realCompute() {
1013	>	protected void realCompute() {
1014		FailingFibAction f = new FailingFibAction(8);
1015		FibAction g = new FibAction(9);
1016		FibAction h = new FibAction(7);
#	Line 702 | Line 1021 | public class RecursiveActionTest extends
1021		try {
1022		invokeAll(set);
1023		shouldThrow();
1024	<	} catch (FJException success) {}
1024	>	} catch (FJException success) {
1025	>	checkCompletedAbnormally(f, success);
1026	>	}
1027		}};
1028		testInvokeOnPool(mainPool(), a);
1029		}
#	Line 713 | Line 1034 | public class RecursiveActionTest extends
1034		*/
1035		public void testTryUnfork() {
1036		RecursiveAction a = new CheckedRecursiveAction() {
1037	<	public void realCompute() {
1037	>	protected void realCompute() {
1038		FibAction g = new FibAction(9);
1039		assertSame(g, g.fork());
1040		FibAction f = new FibAction(8);
1041		assertSame(f, f.fork());
1042		assertTrue(f.tryUnfork());
1043		helpQuiesce();
1044	<	assertFalse(f.isDone());
1045	<	assertTrue(g.isDone());
1044	>	checkNotDone(f);
1045	>	checkCompletedNormally(g);
1046		}};
1047		testInvokeOnPool(singletonPool(), a);
1048		}
#	Line 732 | Line 1053 | public class RecursiveActionTest extends
1053		*/
1054		public void testGetSurplusQueuedTaskCount() {
1055		RecursiveAction a = new CheckedRecursiveAction() {
1056	<	public void realCompute() {
1056	>	protected void realCompute() {
1057		FibAction h = new FibAction(7);
1058		assertSame(h, h.fork());
1059		FibAction g = new FibAction(9);
#	Line 741 | Line 1062 | public class RecursiveActionTest extends
1062		assertSame(f, f.fork());
1063		assertTrue(getSurplusQueuedTaskCount() > 0);
1064		helpQuiesce();
1065	+	assertEquals(0, getSurplusQueuedTaskCount());
1066	+	checkCompletedNormally(f);
1067	+	checkCompletedNormally(g);
1068	+	checkCompletedNormally(h);
1069		}};
1070		testInvokeOnPool(singletonPool(), a);
1071		}
#	Line 750 | Line 1075 | public class RecursiveActionTest extends
1075		*/
1076		public void testPeekNextLocalTask() {
1077		RecursiveAction a = new CheckedRecursiveAction() {
1078	<	public void realCompute() {
1078	>	protected void realCompute() {
1079		FibAction g = new FibAction(9);
1080		assertSame(g, g.fork());
1081		FibAction f = new FibAction(8);
1082		assertSame(f, f.fork());
1083		assertSame(f, peekNextLocalTask());
1084		assertNull(f.join());
1085	<	assertTrue(f.isDone());
1085	>	checkCompletedNormally(f);
1086		helpQuiesce();
1087	+	checkCompletedNormally(f);
1088	+	checkCompletedNormally(g);
1089		}};
1090		testInvokeOnPool(singletonPool(), a);
1091		}
#	Line 769 | Line 1096 | public class RecursiveActionTest extends
1096		*/
1097		public void testPollNextLocalTask() {
1098		RecursiveAction a = new CheckedRecursiveAction() {
1099	<	public void realCompute() {
1099	>	protected void realCompute() {
1100		FibAction g = new FibAction(9);
1101		assertSame(g, g.fork());
1102		FibAction f = new FibAction(8);
1103		assertSame(f, f.fork());
1104		assertSame(f, pollNextLocalTask());
1105		helpQuiesce();
1106	<	assertFalse(f.isDone());
1106	>	checkNotDone(f);
1107	>	checkCompletedNormally(g);
1108		}};
1109		testInvokeOnPool(singletonPool(), a);
1110		}
1111
1112		/**
1113	<	* pollTask returns an unexecuted task
786	<	* without executing it
1113	>	* pollTask returns an unexecuted task without executing it
1114		*/
1115		public void testPollTask() {
1116		RecursiveAction a = new CheckedRecursiveAction() {
1117	<	public void realCompute() {
1117	>	protected void realCompute() {
1118		FibAction g = new FibAction(9);
1119		assertSame(g, g.fork());
1120		FibAction f = new FibAction(8);
1121		assertSame(f, f.fork());
1122		assertSame(f, pollTask());
1123		helpQuiesce();
1124	<	assertFalse(f.isDone());
1125	<	assertTrue(g.isDone());
1124	>	checkNotDone(f);
1125	>	checkCompletedNormally(g);
1126		}};
1127		testInvokeOnPool(singletonPool(), a);
1128		}
#	Line 805 | Line 1132 | public class RecursiveActionTest extends
1132		*/
1133		public void testPeekNextLocalTaskAsync() {
1134		RecursiveAction a = new CheckedRecursiveAction() {
1135	<	public void realCompute() {
1135	>	protected void realCompute() {
1136		FibAction g = new FibAction(9);
1137		assertSame(g, g.fork());
1138		FibAction f = new FibAction(8);
#	Line 813 | Line 1140 | public class RecursiveActionTest extends
1140		assertSame(g, peekNextLocalTask());
1141		assertNull(f.join());
1142		helpQuiesce();
1143	<	assertTrue(f.isDone());
1143	>	checkCompletedNormally(f);
1144	>	checkCompletedNormally(g);
1145		}};
1146		testInvokeOnPool(asyncSingletonPool(), a);
1147		}
1148
1149		/**
1150	<	* pollNextLocalTask returns least recent unexecuted task
1151	<	* without executing it, in async mode
1150	>	* pollNextLocalTask returns least recent unexecuted task without
1151	>	* executing it, in async mode
1152		*/
1153		public void testPollNextLocalTaskAsync() {
1154		RecursiveAction a = new CheckedRecursiveAction() {
1155	<	public void realCompute() {
1155	>	protected void realCompute() {
1156		FibAction g = new FibAction(9);
1157		assertSame(g, g.fork());
1158		FibAction f = new FibAction(8);
1159		assertSame(f, f.fork());
1160		assertSame(g, pollNextLocalTask());
1161		helpQuiesce();
1162	<	assertTrue(f.isDone());
1163	<	assertFalse(g.isDone());
1162	>	checkCompletedNormally(f);
1163	>	checkNotDone(g);
1164		}};
1165		testInvokeOnPool(asyncSingletonPool(), a);
1166		}
1167
1168		/**
1169	<	* pollTask returns an unexecuted task
1170	<	* without executing it, in async mode
1169	>	* pollTask returns an unexecuted task without executing it, in
1170	>	* async mode
1171		*/
1172		public void testPollTaskAsync() {
1173		RecursiveAction a = new CheckedRecursiveAction() {
1174	<	public void realCompute() {
1174	>	protected void realCompute() {
1175		FibAction g = new FibAction(9);
1176		assertSame(g, g.fork());
1177		FibAction f = new FibAction(8);
1178		assertSame(f, f.fork());
1179		assertSame(g, pollTask());
1180		helpQuiesce();
1181	<	assertTrue(f.isDone());
1182	<	assertFalse(g.isDone());
1181	>	checkCompletedNormally(f);
1182	>	checkNotDone(g);
1183		}};
1184		testInvokeOnPool(asyncSingletonPool(), a);
1185		}
1186
1187	+	/** Demo from RecursiveAction javadoc */
1188	+	static class SortTask extends RecursiveAction {
1189	+	final long[] array; final int lo, hi;
1190	+	SortTask(long[] array, int lo, int hi) {
1191	+	this.array = array; this.lo = lo; this.hi = hi;
1192	+	}
1193	+	SortTask(long[] array) { this(array, 0, array.length); }
1194	+	protected void compute() {
1195	+	if (hi - lo < THRESHOLD)
1196	+	sortSequentially(lo, hi);
1197	+	else {
1198	+	int mid = (lo + hi) >>> 1;
1199	+	invokeAll(new SortTask(array, lo, mid),
1200	+	new SortTask(array, mid, hi));
1201	+	merge(lo, mid, hi);
1202	+	}
1203	+	}
1204	+	// implementation details follow:
1205	+	static final int THRESHOLD = 100;
1206	+	void sortSequentially(int lo, int hi) {
1207	+	Arrays.sort(array, lo, hi);
1208	+	}
1209	+	void merge(int lo, int mid, int hi) {
1210	+	long[] buf = Arrays.copyOfRange(array, lo, mid);
1211	+	for (int i = 0, j = lo, k = mid; i < buf.length; j++)
1212	+	array[j] = (k == hi || buf[i] < array[k]) ?
1213	+	buf[i++] : array[k++];
1214	+	}
1215	+	}
1216	+
1217	+	/**
1218	+	* SortTask demo works as advertised
1219	+	*/
1220	+	public void testSortTaskDemo() {
1221	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
1222	+	long[] array = new long[1007];
1223	+	for (int i = 0; i < array.length; i++)
1224	+	array[i] = rnd.nextLong();
1225	+	long[] arrayClone = array.clone();
1226	+	testInvokeOnPool(mainPool(), new SortTask(array));
1227	+	Arrays.sort(arrayClone);
1228	+	assertTrue(Arrays.equals(array, arrayClone));
1229	+	}
1230		}

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