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root/jsr166/jsr166/src/test/tck/FutureTaskTest.java

Comparing jsr166/src/test/tck/FutureTaskTest.java (file contents):
Revision 1.26 by jsr166, Tue May 31 16:16:23 2011 UTC vs.
Revision 1.35 by jsr166, Mon Jan 14 21:54:42 2013 UTC

#	Line 14 | Line 14 | import java.util.concurrent.ExecutionExc
14		import java.util.concurrent.Future;
15		import java.util.concurrent.FutureTask;
16		import java.util.concurrent.TimeoutException;
17	+	import java.util.concurrent.atomic.AtomicInteger;
18		import static java.util.concurrent.TimeUnit.MILLISECONDS;
19		import static java.util.concurrent.TimeUnit.SECONDS;
20		import java.util.*;
#	Line 27 | Line 28 | public class FutureTaskTest extends JSR1
28		return new TestSuite(FutureTaskTest.class);
29		}
30
31	+	void checkIsDone(Future<?> f) {
32	+	assertTrue(f.isDone());
33	+	assertFalse(f.cancel(false));
34	+	assertFalse(f.cancel(true));
35	+	if (f instanceof PublicFutureTask) {
36	+	PublicFutureTask pf = (PublicFutureTask) f;
37	+	assertEquals(1, pf.doneCount());
38	+	assertFalse(pf.runAndReset());
39	+	assertEquals(1, pf.doneCount());
40	+
41	+	// Check that run and runAndReset have no effect.
42	+	int savedRunCount = pf.runCount();
43	+	int savedSetCount = pf.setCount();
44	+	int savedSetExceptionCount = pf.setExceptionCount();
45	+	pf.run();
46	+	pf.runAndReset();
47	+	assertEquals(savedRunCount, pf.runCount());
48	+	assertEquals(savedSetCount, pf.setCount());
49	+	assertEquals(savedSetExceptionCount, pf.setExceptionCount());
50	+	assertTrue(f.isDone());
51	+	}
52	+	}
53	+
54		void checkNotDone(Future<?> f) {
55		assertFalse(f.isDone());
56		assertFalse(f.isCancelled());
57	+	if (f instanceof PublicFutureTask) {
58	+	PublicFutureTask pf = (PublicFutureTask) f;
59	+	assertEquals(0, pf.doneCount());
60	+	assertEquals(0, pf.setCount());
61	+	assertEquals(0, pf.setExceptionCount());
62	+	}
63	+	}
64	+
65	+	void checkIsRunning(Future<?> f) {
66	+	checkNotDone(f);
67	+	if (f instanceof FutureTask) {
68	+	FutureTask ft = (FutureTask<?>) f;
69	+	// Check that run methods do nothing
70	+	ft.run();
71	+	if (f instanceof PublicFutureTask)
72	+	assertFalse(((PublicFutureTask) f).runAndReset());
73	+	checkNotDone(f);
74	+	}
75		}
76
77		<T> void checkCompletedNormally(Future<T> f, T expected) {
78	<	assertTrue(f.isDone());
78	>	checkIsDone(f);
79		assertFalse(f.isCancelled());
80
81		try {
#	Line 42 | Line 84 | public class FutureTaskTest extends JSR1
84		try {
85		assertSame(expected, f.get(5L, SECONDS));
86		} catch (Throwable fail) { threadUnexpectedException(fail); }
45	–
46	–	assertFalse(f.cancel(false));
47	–	assertFalse(f.cancel(true));
87		}
88
89		void checkCancelled(Future<?> f) {
90	<	assertTrue(f.isDone());
90	>	checkIsDone(f);
91		assertTrue(f.isCancelled());
92
93		try {
#	Line 62 | Line 101 | public class FutureTaskTest extends JSR1
101		shouldThrow();
102		} catch (CancellationException success) {
103		} catch (Throwable fail) { threadUnexpectedException(fail); }
104	+	}
105
106	<	assertFalse(f.cancel(false));
107	<	assertFalse(f.cancel(true));
106	>	void tryToConfuseDoneTask(PublicFutureTask pf) {
107	>	pf.set(new Object());
108	>	pf.setException(new Error());
109	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
110	>	pf.cancel(true);
111	>	}
112		}
113
114		void checkCompletedAbnormally(Future<?> f, Throwable t) {
115	<	assertTrue(f.isDone());
115	>	checkIsDone(f);
116		assertFalse(f.isCancelled());
117
118		try {
#	Line 84 | Line 128 | public class FutureTaskTest extends JSR1
128		} catch (ExecutionException success) {
129		assertSame(t, success.getCause());
130		} catch (Throwable fail) { threadUnexpectedException(fail); }
87	–
88	–	assertFalse(f.cancel(false));
89	–	assertFalse(f.cancel(true));
131		}
132
133		/**
134		* Subclass to expose protected methods
135		*/
136		static class PublicFutureTask extends FutureTask {
137	<	public PublicFutureTask(Callable r) { super(r); }
138	<	public boolean runAndReset() { return super.runAndReset(); }
139	<	public void set(Object x) { super.set(x); }
140	<	public void setException(Throwable t) { super.setException(t); }
137	>	private final AtomicInteger runCount;
138	>	private final AtomicInteger doneCount = new AtomicInteger(0);
139	>	private final AtomicInteger runAndResetCount = new AtomicInteger(0);
140	>	private final AtomicInteger setCount = new AtomicInteger(0);
141	>	private final AtomicInteger setExceptionCount = new AtomicInteger(0);
142	>	public int runCount() { return runCount.get(); }
143	>	public int doneCount() { return doneCount.get(); }
144	>	public int runAndResetCount() { return runAndResetCount.get(); }
145	>	public int setCount() { return setCount.get(); }
146	>	public int setExceptionCount() { return setExceptionCount.get(); }
147	>
148	>	PublicFutureTask(Runnable runnable) {
149	>	this(runnable, seven);
150	>	}
151	>	PublicFutureTask(Runnable runnable, Object result) {
152	>	this(runnable, result, new AtomicInteger(0));
153	>	}
154	>	private PublicFutureTask(final Runnable runnable, Object result,
155	>	final AtomicInteger runCount) {
156	>	super(new Runnable() {
157	>	public void run() {
158	>	runCount.getAndIncrement();
159	>	runnable.run();
160	>	}}, result);
161	>	this.runCount = runCount;
162	>	}
163	>	PublicFutureTask(Callable callable) {
164	>	this(callable, new AtomicInteger(0));
165	>	}
166	>	private PublicFutureTask(final Callable callable,
167	>	final AtomicInteger runCount) {
168	>	super(new Callable() {
169	>	public Object call() throws Exception {
170	>	runCount.getAndIncrement();
171	>	return callable.call();
172	>	}});
173	>	this.runCount = runCount;
174	>	}
175	>	@Override public void done() {
176	>	assertTrue(isDone());
177	>	doneCount.incrementAndGet();
178	>	super.done();
179	>	}
180	>	@Override public boolean runAndReset() {
181	>	runAndResetCount.incrementAndGet();
182	>	return super.runAndReset();
183	>	}
184	>	@Override public void set(Object x) {
185	>	setCount.incrementAndGet();
186	>	super.set(x);
187	>	}
188	>	@Override public void setException(Throwable t) {
189	>	setExceptionCount.incrementAndGet();
190	>	super.setException(t);
191	>	}
192	>	}
193	>
194	>	class Counter extends CheckedRunnable {
195	>	final AtomicInteger count = new AtomicInteger(0);
196	>	public int get() { return count.get(); }
197	>	public void realRun() {
198	>	count.getAndIncrement();
199	>	}
200		}
201
202		/**
203	<	* Creating a future with a null callable throws NPE
203	>	* creating a future with a null callable throws NullPointerException
204		*/
205		public void testConstructor() {
206		try {
207	<	FutureTask task = new FutureTask(null);
207	>	new FutureTask(null);
208		shouldThrow();
209		} catch (NullPointerException success) {}
210		}
211
212		/**
213	<	* creating a future with null runnable fails
213	>	* creating a future with null runnable throws NullPointerException
214		*/
215		public void testConstructor2() {
216		try {
217	<	FutureTask task = new FutureTask(null, Boolean.TRUE);
217	>	new FutureTask(null, Boolean.TRUE);
218		shouldThrow();
219		} catch (NullPointerException success) {}
220		}
#	Line 123 | Line 223 | public class FutureTaskTest extends JSR1
223		* isDone is true when a task completes
224		*/
225		public void testIsDone() {
226	<	FutureTask task = new FutureTask(new NoOpCallable());
226	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
227	>	assertFalse(task.isDone());
228		task.run();
229		assertTrue(task.isDone());
230		checkCompletedNormally(task, Boolean.TRUE);
231	+	assertEquals(1, task.runCount());
232		}
233
234		/**
#	Line 134 | Line 236 | public class FutureTaskTest extends JSR1
236		*/
237		public void testRunAndReset() {
238		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
239	<	assertTrue(task.runAndReset());
240	<	checkNotDone(task);
239	>	for (int i = 0; i < 3; i++) {
240	>	assertTrue(task.runAndReset());
241	>	checkNotDone(task);
242	>	assertEquals(i+1, task.runCount());
243	>	assertEquals(i+1, task.runAndResetCount());
244	>	assertEquals(0, task.setCount());
245	>	assertEquals(0, task.setExceptionCount());
246	>	}
247		}
248
249		/**
250		* runAndReset after cancellation fails
251		*/
252	<	public void testResetAfterCancel() {
253	<	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
254	<	assertTrue(task.cancel(false));
255	<	assertFalse(task.runAndReset());
256	<	checkCancelled(task);
252	>	public void testRunAndResetAfterCancel() {
253	>	for (boolean mayInterruptIfRunning : new boolean[] { true, false }) {
254	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
255	>	assertTrue(task.cancel(mayInterruptIfRunning));
256	>	for (int i = 0; i < 3; i++) {
257	>	assertFalse(task.runAndReset());
258	>	assertEquals(0, task.runCount());
259	>	assertEquals(i+1, task.runAndResetCount());
260	>	assertEquals(0, task.setCount());
261	>	assertEquals(0, task.setExceptionCount());
262	>	}
263	>	tryToConfuseDoneTask(task);
264	>	checkCancelled(task);
265	>	}
266		}
267
151	–
268		/**
269		* setting value causes get to return it
270		*/
271		public void testSet() throws Exception {
272		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
273		task.set(one);
274	<	assertSame(task.get(), one);
274	>	for (int i = 0; i < 3; i++) {
275	>	assertSame(one, task.get());
276	>	assertSame(one, task.get(LONG_DELAY_MS, MILLISECONDS));
277	>	assertEquals(1, task.setCount());
278	>	}
279	>	tryToConfuseDoneTask(task);
280		checkCompletedNormally(task, one);
281	+	assertEquals(0, task.runCount());
282		}
283
284		/**
285		* setException causes get to throw ExecutionException
286		*/
287	<	public void testSetException() throws Exception {
287	>	public void testSetException_get() throws Exception {
288		Exception nse = new NoSuchElementException();
289		PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
290		task.setException(nse);
291	+
292	+	try {
293	+	task.get();
294	+	shouldThrow();
295	+	} catch (ExecutionException success) {
296	+	assertSame(nse, success.getCause());
297	+	checkCompletedAbnormally(task, nse);
298	+	}
299	+
300		try {
301	<	Object x = task.get();
301	>	task.get(LONG_DELAY_MS, MILLISECONDS);
302		shouldThrow();
303		} catch (ExecutionException success) {
304	<	assertSame(success.getCause(), nse);
304	>	assertSame(nse, success.getCause());
305		checkCompletedAbnormally(task, nse);
306		}
307	+
308	+	assertEquals(1, task.setExceptionCount());
309	+	assertEquals(0, task.setCount());
310	+	tryToConfuseDoneTask(task);
311	+	checkCompletedAbnormally(task, nse);
312	+	assertEquals(0, task.runCount());
313		}
314
315		/**
316	<	* Cancelling before running succeeds
316	>	* cancel(false) before run succeeds
317		*/
318		public void testCancelBeforeRun() {
319	<	FutureTask task = new FutureTask(new NoOpCallable());
319	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
320		assertTrue(task.cancel(false));
321		task.run();
322	+	assertEquals(0, task.runCount());
323	+	assertEquals(0, task.setCount());
324	+	assertEquals(0, task.setExceptionCount());
325	+	assertTrue(task.isCancelled());
326	+	assertTrue(task.isDone());
327	+	tryToConfuseDoneTask(task);
328	+	assertEquals(0, task.runCount());
329		checkCancelled(task);
330		}
331
332		/**
333	<	* Cancel(true) before run succeeds
333	>	* cancel(true) before run succeeds
334		*/
335		public void testCancelBeforeRun2() {
336	<	FutureTask task = new FutureTask(new NoOpCallable());
336	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
337		assertTrue(task.cancel(true));
338		task.run();
339	+	assertEquals(0, task.runCount());
340	+	assertEquals(0, task.setCount());
341	+	assertEquals(0, task.setExceptionCount());
342	+	assertTrue(task.isCancelled());
343	+	assertTrue(task.isDone());
344	+	tryToConfuseDoneTask(task);
345	+	assertEquals(0, task.runCount());
346		checkCancelled(task);
347		}
348
349		/**
350	<	* cancel of a completed task fails
350	>	* cancel(false) of a completed task fails
351		*/
352		public void testCancelAfterRun() {
353	<	FutureTask task = new FutureTask(new NoOpCallable());
353	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
354		task.run();
355		assertFalse(task.cancel(false));
356	+	assertEquals(1, task.runCount());
357	+	assertEquals(1, task.setCount());
358	+	assertEquals(0, task.setExceptionCount());
359	+	tryToConfuseDoneTask(task);
360		checkCompletedNormally(task, Boolean.TRUE);
361	+	assertEquals(1, task.runCount());
362		}
363
364		/**
365	<	* cancel(true) interrupts a running task
365	>	* cancel(true) of a completed task fails
366		*/
367	<	public void testCancelInterrupt() throws InterruptedException {
368	<	final CountDownLatch threadStarted = new CountDownLatch(1);
369	<	final FutureTask task =
370	<	new FutureTask(new CheckedCallable<Object>() {
371	<	public Object realCall() {
372	<	threadStarted.countDown();
373	<	long t0 = System.nanoTime();
374	<	for (;;) {
375	<	if (Thread.interrupted())
376	<	return Boolean.TRUE;
377	<	if (millisElapsedSince(t0) > MEDIUM_DELAY_MS)
378	<	fail("interrupt not delivered");
379	<	Thread.yield();
380	<	}
367	>	public void testCancelAfterRun2() {
368	>	PublicFutureTask task = new PublicFutureTask(new NoOpCallable());
369	>	task.run();
370	>	assertFalse(task.cancel(true));
371	>	assertEquals(1, task.runCount());
372	>	assertEquals(1, task.setCount());
373	>	assertEquals(0, task.setExceptionCount());
374	>	tryToConfuseDoneTask(task);
375	>	checkCompletedNormally(task, Boolean.TRUE);
376	>	assertEquals(1, task.runCount());
377	>	}
378	>
379	>	/**
380	>	* cancel(true) interrupts a running task that subsequently succeeds
381	>	*/
382	>	public void testCancelInterrupt() {
383	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
384	>	final PublicFutureTask task =
385	>	new PublicFutureTask(new CheckedRunnable() {
386	>	public void realRun() {
387	>	pleaseCancel.countDown();
388	>	try {
389	>	delay(LONG_DELAY_MS);
390	>	shouldThrow();
391	>	} catch (InterruptedException success) {}
392		}});
393
394		Thread t = newStartedThread(task);
395	<	threadStarted.await();
395	>	await(pleaseCancel);
396		assertTrue(task.cancel(true));
397	<	checkCancelled(task);
398	<	awaitTermination(t, MEDIUM_DELAY_MS);
397	>	assertTrue(task.isCancelled());
398	>	assertTrue(task.isDone());
399	>	awaitTermination(t);
400	>	assertEquals(1, task.runCount());
401	>	assertEquals(1, task.setCount());
402	>	assertEquals(0, task.setExceptionCount());
403	>	tryToConfuseDoneTask(task);
404		checkCancelled(task);
405		}
406
407		/**
408	<	* cancel(false) does not interrupt a running task
408	>	* cancel(true) tries to interrupt a running task, but
409	>	* Thread.interrupt throws (simulating a restrictive security
410	>	* manager)
411		*/
412	<	public void testCancelNoInterrupt() throws InterruptedException {
413	<	final CountDownLatch threadStarted = new CountDownLatch(1);
412	>	public void testCancelInterrupt_ThrowsSecurityException() {
413	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
414		final CountDownLatch cancelled = new CountDownLatch(1);
415	<	final FutureTask<Boolean> task =
416	<	new FutureTask<Boolean>(new CheckedCallable<Boolean>() {
417	<	public Boolean realCall() throws InterruptedException {
418	<	threadStarted.countDown();
419	<	cancelled.await(MEDIUM_DELAY_MS, MILLISECONDS);
415	>	final PublicFutureTask task =
416	>	new PublicFutureTask(new CheckedRunnable() {
417	>	public void realRun() {
418	>	pleaseCancel.countDown();
419	>	await(cancelled);
420		assertFalse(Thread.interrupted());
247	–	return Boolean.TRUE;
421		}});
422
423	<	Thread t = newStartedThread(task);
424	<	threadStarted.await();
425	<	assertTrue(task.cancel(false));
426	<	checkCancelled(task);
423	>	final Thread t = new Thread(task) {
424	>	// Simulate a restrictive security manager.
425	>	@Override public void interrupt() {
426	>	throw new SecurityException();
427	>	}};
428	>	t.setDaemon(true);
429	>	t.start();
430	>
431	>	await(pleaseCancel);
432	>	try {
433	>	task.cancel(true);
434	>	shouldThrow();
435	>	} catch (SecurityException expected) {}
436	>
437	>	// We failed to deliver the interrupt, but the world retains
438	>	// its sanity, as if we had done task.cancel(false)
439	>	assertTrue(task.isCancelled());
440	>	assertTrue(task.isDone());
441	>	assertEquals(1, task.runCount());
442	>	assertEquals(1, task.doneCount());
443	>	assertEquals(0, task.setCount());
444	>	assertEquals(0, task.setExceptionCount());
445		cancelled.countDown();
446	<	awaitTermination(t, MEDIUM_DELAY_MS);
446	>	awaitTermination(t);
447	>	assertEquals(1, task.setCount());
448	>	assertEquals(0, task.setExceptionCount());
449	>	tryToConfuseDoneTask(task);
450		checkCancelled(task);
451		}
452
453		/**
454	<	* run in one thread causes get in another thread to retrieve value
454	>	* cancel(true) interrupts a running task that subsequently throws
455		*/
456	<	public void testGetRun() throws InterruptedException {
457	<	final CountDownLatch threadStarted = new CountDownLatch(1);
458	<
459	<	final FutureTask task =
460	<	new FutureTask(new CheckedCallable<Object>() {
461	<	public Object realCall() throws InterruptedException {
462	<	return Boolean.TRUE;
456	>	public void testCancelInterrupt_taskFails() {
457	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
458	>	final PublicFutureTask task =
459	>	new PublicFutureTask(new Runnable() {
460	>	public void run() {
461	>	try {
462	>	pleaseCancel.countDown();
463	>	delay(LONG_DELAY_MS);
464	>	shouldThrow();
465	>	} catch (Throwable t) {
466	>	assertTrue(t instanceof InterruptedException);
467	>	}
468	>	throw new RuntimeException();
469		}});
470
471	<	Thread t = newStartedThread(new CheckedRunnable() {
472	<	public void realRun() throws Exception {
473	<	threadStarted.countDown();
474	<	assertSame(Boolean.TRUE, task.get());
475	<	}});
476	<
477	<	threadStarted.await();
478	<	checkNotDone(task);
479	<	assertTrue(t.isAlive());
480	<	task.run();
281	<	checkCompletedNormally(task, Boolean.TRUE);
282	<	awaitTermination(t, MEDIUM_DELAY_MS);
471	>	Thread t = newStartedThread(task);
472	>	await(pleaseCancel);
473	>	assertTrue(task.cancel(true));
474	>	assertTrue(task.isCancelled());
475	>	awaitTermination(t);
476	>	assertEquals(1, task.runCount());
477	>	assertEquals(0, task.setCount());
478	>	assertEquals(1, task.setExceptionCount());
479	>	tryToConfuseDoneTask(task);
480	>	checkCancelled(task);
481		}
482
483		/**
484	<	* set in one thread causes get in another thread to retrieve value
484	>	* cancel(false) does not interrupt a running task
485		*/
486	<	public void testGetSet() throws InterruptedException {
487	<	final CountDownLatch threadStarted = new CountDownLatch(1);
488	<
486	>	public void testCancelNoInterrupt() {
487	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
488	>	final CountDownLatch cancelled = new CountDownLatch(1);
489		final PublicFutureTask task =
490	<	new PublicFutureTask(new CheckedCallable<Object>() {
491	<	public Object realCall() throws InterruptedException {
490	>	new PublicFutureTask(new CheckedCallable<Boolean>() {
491	>	public Boolean realCall() {
492	>	pleaseCancel.countDown();
493	>	await(cancelled);
494	>	assertFalse(Thread.interrupted());
495		return Boolean.TRUE;
496		}});
497
498	<	Thread t = newStartedThread(new CheckedRunnable() {
499	<	public void realRun() throws Exception {
500	<	threadStarted.countDown();
501	<	assertSame(Boolean.FALSE, task.get());
502	<	}});
503	<
504	<	threadStarted.await();
505	<	checkNotDone(task);
506	<	assertTrue(t.isAlive());
507	<	task.set(Boolean.FALSE);
508	<	checkCompletedNormally(task, Boolean.FALSE);
308	<	awaitTermination(t, MEDIUM_DELAY_MS);
498	>	Thread t = newStartedThread(task);
499	>	await(pleaseCancel);
500	>	assertTrue(task.cancel(false));
501	>	assertTrue(task.isCancelled());
502	>	cancelled.countDown();
503	>	awaitTermination(t);
504	>	assertEquals(1, task.runCount());
505	>	assertEquals(1, task.setCount());
506	>	assertEquals(0, task.setExceptionCount());
507	>	tryToConfuseDoneTask(task);
508	>	checkCancelled(task);
509		}
510
511		/**
512	<	* run in one thread causes timed get in another thread to retrieve value
512	>	* run in one thread causes get in another thread to retrieve value
513		*/
514	<	public void testTimedGetRun() throws InterruptedException {
515	<	final CountDownLatch threadStarted = new CountDownLatch(1);
514	>	public void testGetRun() {
515	>	final CountDownLatch pleaseRun = new CountDownLatch(2);
516
517	<	final FutureTask task =
518	<	new FutureTask(new CheckedCallable<Object>() {
519	<	public Object realCall() throws InterruptedException {
520	<	return Boolean.TRUE;
517	>	final PublicFutureTask task =
518	>	new PublicFutureTask(new CheckedCallable<Object>() {
519	>	public Object realCall() {
520	>	return two;
521		}});
522
523	<	Thread t = newStartedThread(new CheckedRunnable() {
523	>	Thread t1 = newStartedThread(new CheckedRunnable() {
524		public void realRun() throws Exception {
525	<	threadStarted.countDown();
526	<	assertSame(Boolean.TRUE,
327	<	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
525	>	pleaseRun.countDown();
526	>	assertSame(two, task.get());
527		}});
528
529	<	threadStarted.await();
529	>	Thread t2 = newStartedThread(new CheckedRunnable() {
530	>	public void realRun() throws Exception {
531	>	pleaseRun.countDown();
532	>	assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS));
533	>	}});
534	>
535	>	await(pleaseRun);
536		checkNotDone(task);
537	<	assertTrue(t.isAlive());
537	>	assertTrue(t1.isAlive());
538	>	assertTrue(t2.isAlive());
539		task.run();
540	<	checkCompletedNormally(task, Boolean.TRUE);
541	<	awaitTermination(t, MEDIUM_DELAY_MS);
540	>	checkCompletedNormally(task, two);
541	>	assertEquals(1, task.runCount());
542	>	assertEquals(1, task.setCount());
543	>	assertEquals(0, task.setExceptionCount());
544	>	awaitTermination(t1);
545	>	awaitTermination(t2);
546	>	tryToConfuseDoneTask(task);
547	>	checkCompletedNormally(task, two);
548		}
549
550		/**
551	<	* set in one thread causes timed get in another thread to retrieve value
551	>	* set in one thread causes get in another thread to retrieve value
552		*/
553	<	public void testTimedGetSet() throws InterruptedException {
554	<	final CountDownLatch threadStarted = new CountDownLatch(1);
553	>	public void testGetSet() {
554	>	final CountDownLatch pleaseSet = new CountDownLatch(2);
555
556		final PublicFutureTask task =
557		new PublicFutureTask(new CheckedCallable<Object>() {
558		public Object realCall() throws InterruptedException {
559	<	return Boolean.TRUE;
559	>	return two;
560		}});
561
562	<	Thread t = newStartedThread(new CheckedRunnable() {
562	>	Thread t1 = newStartedThread(new CheckedRunnable() {
563	>	public void realRun() throws Exception {
564	>	pleaseSet.countDown();
565	>	assertSame(two, task.get());
566	>	}});
567	>
568	>	Thread t2 = newStartedThread(new CheckedRunnable() {
569		public void realRun() throws Exception {
570	<	threadStarted.countDown();
571	<	assertSame(Boolean.FALSE,
354	<	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
570	>	pleaseSet.countDown();
571	>	assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS));
572		}});
573
574	<	threadStarted.await();
574	>	await(pleaseSet);
575		checkNotDone(task);
576	<	assertTrue(t.isAlive());
577	<	task.set(Boolean.FALSE);
578	<	checkCompletedNormally(task, Boolean.FALSE);
579	<	awaitTermination(t, MEDIUM_DELAY_MS);
576	>	assertTrue(t1.isAlive());
577	>	assertTrue(t2.isAlive());
578	>	task.set(two);
579	>	assertEquals(0, task.runCount());
580	>	assertEquals(1, task.setCount());
581	>	assertEquals(0, task.setExceptionCount());
582	>	tryToConfuseDoneTask(task);
583	>	checkCompletedNormally(task, two);
584	>	awaitTermination(t1);
585	>	awaitTermination(t2);
586		}
587
588		/**
589		* Cancelling a task causes timed get in another thread to throw
590		* CancellationException
591		*/
592	<	public void testTimedGet_Cancellation() throws InterruptedException {
593	<	final CountDownLatch threadStarted = new CountDownLatch(2);
594	<	final FutureTask task =
595	<	new FutureTask(new CheckedInterruptedCallable<Object>() {
596	<	public Object realCall() throws InterruptedException {
597	<	threadStarted.countDown();
598	<	delay(LONG_DELAY_MS);
599	<	return Boolean.TRUE;
600	<	}});
601	<
602	<	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
603	<	public void realRun() throws Exception {
604	<	threadStarted.countDown();
605	<	task.get(MEDIUM_DELAY_MS, MILLISECONDS);
606	<	}};
607	<	Thread t2 = new Thread(task);
608	<	t1.start();
609	<	t2.start();
610	<	threadStarted.await();
611	<	task.cancel(true);
612	<	awaitTermination(t1, MEDIUM_DELAY_MS);
613	<	awaitTermination(t2, MEDIUM_DELAY_MS);
614	<	checkCancelled(task);
615	<	}
616	<
617	<	/**
618	<	* Cancelling a task causes get in another thread to throw
619	<	* CancellationException
620	<	*/
621	<	public void testGet_Cancellation() throws InterruptedException {
622	<	final CountDownLatch threadStarted = new CountDownLatch(2);
623	<	final FutureTask task =
624	<	new FutureTask(new CheckedInterruptedCallable<Object>() {
625	<	public Object realCall() throws InterruptedException {
626	<	threadStarted.countDown();
627	<	delay(LONG_DELAY_MS);
628	<	return Boolean.TRUE;
629	<	}});
630	<
631	<	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
632	<	public void realRun() throws Exception {
633	<	threadStarted.countDown();
634	<	task.get();
635	<	}};
636	<	Thread t2 = new Thread(task);
637	<	t1.start();
415	<	t2.start();
416	<	threadStarted.await();
417	<	task.cancel(true);
418	<	awaitTermination(t1, MEDIUM_DELAY_MS);
419	<	awaitTermination(t2, MEDIUM_DELAY_MS);
420	<	checkCancelled(task);
592	>	public void testTimedGet_Cancellation() {
593	>	for (final boolean mayInterruptIfRunning :
594	>	new boolean[] { true, false }) {
595	>	final CountDownLatch pleaseCancel = new CountDownLatch(3);
596	>	final CountDownLatch cancelled = new CountDownLatch(1);
597	>	final PublicFutureTask task =
598	>	new PublicFutureTask(new CheckedCallable<Object>() {
599	>	public Object realCall() throws InterruptedException {
600	>	pleaseCancel.countDown();
601	>	if (mayInterruptIfRunning) {
602	>	try {
603	>	delay(2*LONG_DELAY_MS);
604	>	} catch (InterruptedException success) {}
605	>	} else {
606	>	await(cancelled);
607	>	}
608	>	return two;
609	>	}});
610	>
611	>	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
612	>	public void realRun() throws Exception {
613	>	pleaseCancel.countDown();
614	>	task.get();
615	>	}};
616	>	Thread t2 = new ThreadShouldThrow(CancellationException.class) {
617	>	public void realRun() throws Exception {
618	>	pleaseCancel.countDown();
619	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
620	>	}};
621	>	t1.start();
622	>	t2.start();
623	>	Thread t3 = newStartedThread(task);
624	>	await(pleaseCancel);
625	>	checkIsRunning(task);
626	>	task.cancel(mayInterruptIfRunning);
627	>	checkCancelled(task);
628	>	awaitTermination(t1);
629	>	awaitTermination(t2);
630	>	cancelled.countDown();
631	>	awaitTermination(t3);
632	>	assertEquals(1, task.runCount());
633	>	assertEquals(1, task.setCount());
634	>	assertEquals(0, task.setExceptionCount());
635	>	tryToConfuseDoneTask(task);
636	>	checkCancelled(task);
637	>	}
638		}
639
423	–
640		/**
641		* A runtime exception in task causes get to throw ExecutionException
642		*/
643		public void testGet_ExecutionException() throws InterruptedException {
644	<	final FutureTask task = new FutureTask(new Callable() {
644	>	final ArithmeticException e = new ArithmeticException();
645	>	final PublicFutureTask task = new PublicFutureTask(new Callable() {
646		public Object call() {
647	<	return 5/0;
647	>	throw e;
648		}});
649
650		task.run();
651	+	assertEquals(1, task.runCount());
652	+	assertEquals(0, task.setCount());
653	+	assertEquals(1, task.setExceptionCount());
654		try {
655		task.get();
656		shouldThrow();
657		} catch (ExecutionException success) {
658	<	assertTrue(success.getCause() instanceof ArithmeticException);
658	>	assertSame(e, success.getCause());
659	>	tryToConfuseDoneTask(task);
660		checkCompletedAbnormally(task, success.getCause());
661		}
662		}
#	Line 444 | Line 665 | public class FutureTaskTest extends JSR1
665		* A runtime exception in task causes timed get to throw ExecutionException
666		*/
667		public void testTimedGet_ExecutionException2() throws Exception {
668	<	final FutureTask task = new FutureTask(new Callable() {
668	>	final ArithmeticException e = new ArithmeticException();
669	>	final PublicFutureTask task = new PublicFutureTask(new Callable() {
670		public Object call() {
671	<	return 5/0;
671	>	throw e;
672		}});
673
674		task.run();
675		try {
676	<	task.get(SHORT_DELAY_MS, MILLISECONDS);
676	>	task.get(LONG_DELAY_MS, MILLISECONDS);
677		shouldThrow();
678		} catch (ExecutionException success) {
679	<	assertTrue(success.getCause() instanceof ArithmeticException);
679	>	assertSame(e, success.getCause());
680	>	tryToConfuseDoneTask(task);
681		checkCompletedAbnormally(task, success.getCause());
682		}
683		}
684
462	–
685		/**
686	<	* Interrupting a waiting get causes it to throw InterruptedException
686	>	* get is interruptible
687		*/
688	<	public void testGet_InterruptedException() throws InterruptedException {
689	<	final CountDownLatch threadStarted = new CountDownLatch(1);
688	>	public void testGet_interruptible() {
689	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
690		final FutureTask task = new FutureTask(new NoOpCallable());
691	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
691	>	Thread t = newStartedThread(new CheckedRunnable() {
692		public void realRun() throws Exception {
693	<	threadStarted.countDown();
694	<	task.get();
693	>	Thread.currentThread().interrupt();
694	>	try {
695	>	task.get();
696	>	shouldThrow();
697	>	} catch (InterruptedException success) {}
698	>	assertFalse(Thread.interrupted());
699	>
700	>	pleaseInterrupt.countDown();
701	>	try {
702	>	task.get();
703	>	shouldThrow();
704	>	} catch (InterruptedException success) {}
705	>	assertFalse(Thread.interrupted());
706		}});
707
708	<	threadStarted.await();
708	>	await(pleaseInterrupt);
709		t.interrupt();
710	<	awaitTermination(t, MEDIUM_DELAY_MS);
710	>	awaitTermination(t);
711		checkNotDone(task);
712		}
713
714		/**
715	<	* Interrupting a waiting timed get causes it to throw InterruptedException
715	>	* timed get is interruptible
716		*/
717	<	public void testTimedGet_InterruptedException2() throws InterruptedException {
718	<	final CountDownLatch threadStarted = new CountDownLatch(1);
717	>	public void testTimedGet_interruptible() {
718	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
719		final FutureTask task = new FutureTask(new NoOpCallable());
720	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
720	>	Thread t = newStartedThread(new CheckedRunnable() {
721		public void realRun() throws Exception {
722	<	threadStarted.countDown();
723	<	task.get(LONG_DELAY_MS, MILLISECONDS);
722	>	Thread.currentThread().interrupt();
723	>	try {
724	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
725	>	shouldThrow();
726	>	} catch (InterruptedException success) {}
727	>	assertFalse(Thread.interrupted());
728	>
729	>	pleaseInterrupt.countDown();
730	>	try {
731	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
732	>	shouldThrow();
733	>	} catch (InterruptedException success) {}
734	>	assertFalse(Thread.interrupted());
735		}});
736
737	<	threadStarted.await();
737	>	await(pleaseInterrupt);
738		t.interrupt();
739	<	awaitTermination(t, MEDIUM_DELAY_MS);
739	>	awaitTermination(t);
740		checkNotDone(task);
741		}
742
#	Line 500 | Line 744 | public class FutureTaskTest extends JSR1
744		* A timed out timed get throws TimeoutException
745		*/
746		public void testGet_TimeoutException() throws Exception {
747	+	FutureTask task = new FutureTask(new NoOpCallable());
748	+	long startTime = System.nanoTime();
749		try {
750	<	FutureTask task = new FutureTask(new NoOpCallable());
505	<	task.get(1, MILLISECONDS);
750	>	task.get(timeoutMillis(), MILLISECONDS);
751		shouldThrow();
752	<	} catch (TimeoutException success) {}
752	>	} catch (TimeoutException success) {
753	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
754	>	}
755	>	}
756	>
757	>	/**
758	>	* timed get with null TimeUnit throws NullPointerException
759	>	*/
760	>	public void testGet_NullTimeUnit() throws Exception {
761	>	FutureTask task = new FutureTask(new NoOpCallable());
762	>	long[] timeouts = { Long.MIN_VALUE, 0L, Long.MAX_VALUE };
763	>
764	>	for (long timeout : timeouts) {
765	>	try {
766	>	task.get(timeout, null);
767	>	shouldThrow();
768	>	} catch (NullPointerException success) {}
769	>	}
770	>
771	>	task.run();
772	>
773	>	for (long timeout : timeouts) {
774	>	try {
775	>	task.get(timeout, null);
776	>	shouldThrow();
777	>	} catch (NullPointerException success) {}
778	>	}
779		}
780
781		}

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