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

Comparing jsr166/src/test/tck/FutureTaskTest.java (file contents):
Revision 1.27 by jsr166, Sat Jun 18 14:16:42 2011 UTC vs.
Revision 1.34 by jsr166, Sat Dec 29 19:07:32 2012 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
268		/**
#	Line 154 | Line 271 | public class FutureTaskTest extends JSR1
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());
246	–	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	>	} finally { throw new RuntimeException(); }
465		}});
466
467	<	Thread t = newStartedThread(new CheckedRunnable() {
468	<	public void realRun() throws Exception {
469	<	threadStarted.countDown();
470	<	assertSame(Boolean.TRUE, task.get());
471	<	}});
472	<
473	<	threadStarted.await();
474	<	checkNotDone(task);
475	<	assertTrue(t.isAlive());
476	<	task.run();
280	<	checkCompletedNormally(task, Boolean.TRUE);
281	<	awaitTermination(t, MEDIUM_DELAY_MS);
467	>	Thread t = newStartedThread(task);
468	>	await(pleaseCancel);
469	>	assertTrue(task.cancel(true));
470	>	assertTrue(task.isCancelled());
471	>	awaitTermination(t);
472	>	assertEquals(1, task.runCount());
473	>	assertEquals(0, task.setCount());
474	>	assertEquals(1, task.setExceptionCount());
475	>	tryToConfuseDoneTask(task);
476	>	checkCancelled(task);
477		}
478
479		/**
480	<	* set in one thread causes get in another thread to retrieve value
480	>	* cancel(false) does not interrupt a running task
481		*/
482	<	public void testGetSet() throws InterruptedException {
483	<	final CountDownLatch threadStarted = new CountDownLatch(1);
484	<
482	>	public void testCancelNoInterrupt() {
483	>	final CountDownLatch pleaseCancel = new CountDownLatch(1);
484	>	final CountDownLatch cancelled = new CountDownLatch(1);
485		final PublicFutureTask task =
486	<	new PublicFutureTask(new CheckedCallable<Object>() {
487	<	public Object realCall() throws InterruptedException {
486	>	new PublicFutureTask(new CheckedCallable<Boolean>() {
487	>	public Boolean realCall() {
488	>	pleaseCancel.countDown();
489	>	await(cancelled);
490	>	assertFalse(Thread.interrupted());
491		return Boolean.TRUE;
492		}});
493
494	<	Thread t = newStartedThread(new CheckedRunnable() {
495	<	public void realRun() throws Exception {
496	<	threadStarted.countDown();
497	<	assertSame(Boolean.FALSE, task.get());
498	<	}});
499	<
500	<	threadStarted.await();
501	<	checkNotDone(task);
502	<	assertTrue(t.isAlive());
503	<	task.set(Boolean.FALSE);
504	<	checkCompletedNormally(task, Boolean.FALSE);
307	<	awaitTermination(t, MEDIUM_DELAY_MS);
494	>	Thread t = newStartedThread(task);
495	>	await(pleaseCancel);
496	>	assertTrue(task.cancel(false));
497	>	assertTrue(task.isCancelled());
498	>	cancelled.countDown();
499	>	awaitTermination(t);
500	>	assertEquals(1, task.runCount());
501	>	assertEquals(1, task.setCount());
502	>	assertEquals(0, task.setExceptionCount());
503	>	tryToConfuseDoneTask(task);
504	>	checkCancelled(task);
505		}
506
507		/**
508	<	* run in one thread causes timed get in another thread to retrieve value
508	>	* run in one thread causes get in another thread to retrieve value
509		*/
510	<	public void testTimedGetRun() throws InterruptedException {
511	<	final CountDownLatch threadStarted = new CountDownLatch(1);
510	>	public void testGetRun() {
511	>	final CountDownLatch pleaseRun = new CountDownLatch(2);
512
513	<	final FutureTask task =
514	<	new FutureTask(new CheckedCallable<Object>() {
515	<	public Object realCall() throws InterruptedException {
516	<	return Boolean.TRUE;
513	>	final PublicFutureTask task =
514	>	new PublicFutureTask(new CheckedCallable<Object>() {
515	>	public Object realCall() {
516	>	return two;
517		}});
518
519	<	Thread t = newStartedThread(new CheckedRunnable() {
519	>	Thread t1 = newStartedThread(new CheckedRunnable() {
520	>	public void realRun() throws Exception {
521	>	pleaseRun.countDown();
522	>	assertSame(two, task.get());
523	>	}});
524	>
525	>	Thread t2 = newStartedThread(new CheckedRunnable() {
526		public void realRun() throws Exception {
527	<	threadStarted.countDown();
528	<	assertSame(Boolean.TRUE,
326	<	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
527	>	pleaseRun.countDown();
528	>	assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS));
529		}});
530
531	<	threadStarted.await();
531	>	await(pleaseRun);
532		checkNotDone(task);
533	<	assertTrue(t.isAlive());
533	>	assertTrue(t1.isAlive());
534	>	assertTrue(t2.isAlive());
535		task.run();
536	<	checkCompletedNormally(task, Boolean.TRUE);
537	<	awaitTermination(t, MEDIUM_DELAY_MS);
536	>	checkCompletedNormally(task, two);
537	>	assertEquals(1, task.runCount());
538	>	assertEquals(1, task.setCount());
539	>	assertEquals(0, task.setExceptionCount());
540	>	awaitTermination(t1);
541	>	awaitTermination(t2);
542	>	tryToConfuseDoneTask(task);
543	>	checkCompletedNormally(task, two);
544		}
545
546		/**
547	<	* set in one thread causes timed get in another thread to retrieve value
547	>	* set in one thread causes get in another thread to retrieve value
548		*/
549	<	public void testTimedGetSet() throws InterruptedException {
550	<	final CountDownLatch threadStarted = new CountDownLatch(1);
549	>	public void testGetSet() {
550	>	final CountDownLatch pleaseSet = new CountDownLatch(2);
551
552		final PublicFutureTask task =
553		new PublicFutureTask(new CheckedCallable<Object>() {
554		public Object realCall() throws InterruptedException {
555	<	return Boolean.TRUE;
555	>	return two;
556		}});
557
558	<	Thread t = newStartedThread(new CheckedRunnable() {
558	>	Thread t1 = newStartedThread(new CheckedRunnable() {
559		public void realRun() throws Exception {
560	<	threadStarted.countDown();
561	<	assertSame(Boolean.FALSE,
353	<	task.get(MEDIUM_DELAY_MS, MILLISECONDS));
560	>	pleaseSet.countDown();
561	>	assertSame(two, task.get());
562		}});
563
564	<	threadStarted.await();
564	>	Thread t2 = newStartedThread(new CheckedRunnable() {
565	>	public void realRun() throws Exception {
566	>	pleaseSet.countDown();
567	>	assertSame(two, task.get(2*LONG_DELAY_MS, MILLISECONDS));
568	>	}});
569	>
570	>	await(pleaseSet);
571		checkNotDone(task);
572	<	assertTrue(t.isAlive());
573	<	task.set(Boolean.FALSE);
574	<	checkCompletedNormally(task, Boolean.FALSE);
575	<	awaitTermination(t, MEDIUM_DELAY_MS);
572	>	assertTrue(t1.isAlive());
573	>	assertTrue(t2.isAlive());
574	>	task.set(two);
575	>	assertEquals(0, task.runCount());
576	>	assertEquals(1, task.setCount());
577	>	assertEquals(0, task.setExceptionCount());
578	>	tryToConfuseDoneTask(task);
579	>	checkCompletedNormally(task, two);
580	>	awaitTermination(t1);
581	>	awaitTermination(t2);
582		}
583
584		/**
585		* Cancelling a task causes timed get in another thread to throw
586		* CancellationException
587		*/
588	<	public void testTimedGet_Cancellation() throws InterruptedException {
589	<	final CountDownLatch threadStarted = new CountDownLatch(2);
590	<	final FutureTask task =
591	<	new FutureTask(new CheckedInterruptedCallable<Object>() {
592	<	public Object realCall() throws InterruptedException {
593	<	threadStarted.countDown();
594	<	delay(LONG_DELAY_MS);
595	<	return Boolean.TRUE;
596	<	}});
597	<
598	<	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
599	<	public void realRun() throws Exception {
600	<	threadStarted.countDown();
601	<	task.get(MEDIUM_DELAY_MS, MILLISECONDS);
602	<	}};
603	<	Thread t2 = new Thread(task);
604	<	t1.start();
605	<	t2.start();
606	<	threadStarted.await();
607	<	task.cancel(true);
608	<	awaitTermination(t1, MEDIUM_DELAY_MS);
609	<	awaitTermination(t2, MEDIUM_DELAY_MS);
610	<	checkCancelled(task);
611	<	}
612	<
613	<	/**
614	<	* Cancelling a task causes get in another thread to throw
615	<	* CancellationException
616	<	*/
617	<	public void testGet_Cancellation() throws InterruptedException {
618	<	final CountDownLatch threadStarted = new CountDownLatch(2);
619	<	final FutureTask task =
620	<	new FutureTask(new CheckedInterruptedCallable<Object>() {
621	<	public Object realCall() throws InterruptedException {
622	<	threadStarted.countDown();
623	<	delay(LONG_DELAY_MS);
624	<	return Boolean.TRUE;
625	<	}});
626	<
627	<	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
628	<	public void realRun() throws Exception {
629	<	threadStarted.countDown();
630	<	task.get();
631	<	}};
632	<	Thread t2 = new Thread(task);
633	<	t1.start();
414	<	t2.start();
415	<	threadStarted.await();
416	<	task.cancel(true);
417	<	awaitTermination(t1, MEDIUM_DELAY_MS);
418	<	awaitTermination(t2, MEDIUM_DELAY_MS);
419	<	checkCancelled(task);
588	>	public void testTimedGet_Cancellation() {
589	>	for (final boolean mayInterruptIfRunning :
590	>	new boolean[] { true, false }) {
591	>	final CountDownLatch pleaseCancel = new CountDownLatch(3);
592	>	final CountDownLatch cancelled = new CountDownLatch(1);
593	>	final PublicFutureTask task =
594	>	new PublicFutureTask(new CheckedCallable<Object>() {
595	>	public Object realCall() throws InterruptedException {
596	>	pleaseCancel.countDown();
597	>	if (mayInterruptIfRunning) {
598	>	try {
599	>	delay(2*LONG_DELAY_MS);
600	>	} catch (InterruptedException success) {}
601	>	} else {
602	>	await(cancelled);
603	>	}
604	>	return two;
605	>	}});
606	>
607	>	Thread t1 = new ThreadShouldThrow(CancellationException.class) {
608	>	public void realRun() throws Exception {
609	>	pleaseCancel.countDown();
610	>	task.get();
611	>	}};
612	>	Thread t2 = new ThreadShouldThrow(CancellationException.class) {
613	>	public void realRun() throws Exception {
614	>	pleaseCancel.countDown();
615	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
616	>	}};
617	>	t1.start();
618	>	t2.start();
619	>	Thread t3 = newStartedThread(task);
620	>	await(pleaseCancel);
621	>	checkIsRunning(task);
622	>	task.cancel(mayInterruptIfRunning);
623	>	checkCancelled(task);
624	>	awaitTermination(t1);
625	>	awaitTermination(t2);
626	>	cancelled.countDown();
627	>	awaitTermination(t3);
628	>	assertEquals(1, task.runCount());
629	>	assertEquals(1, task.setCount());
630	>	assertEquals(0, task.setExceptionCount());
631	>	tryToConfuseDoneTask(task);
632	>	checkCancelled(task);
633	>	}
634		}
635
636		/**
637		* A runtime exception in task causes get to throw ExecutionException
638		*/
639		public void testGet_ExecutionException() throws InterruptedException {
640	<	final FutureTask task = new FutureTask(new Callable() {
640	>	final ArithmeticException e = new ArithmeticException();
641	>	final PublicFutureTask task = new PublicFutureTask(new Callable() {
642		public Object call() {
643	<	return 5/0;
643	>	throw e;
644		}});
645
646		task.run();
647	+	assertEquals(1, task.runCount());
648	+	assertEquals(0, task.setCount());
649	+	assertEquals(1, task.setExceptionCount());
650		try {
651		task.get();
652		shouldThrow();
653		} catch (ExecutionException success) {
654	<	assertTrue(success.getCause() instanceof ArithmeticException);
654	>	assertSame(e, success.getCause());
655	>	tryToConfuseDoneTask(task);
656		checkCompletedAbnormally(task, success.getCause());
657		}
658		}
#	Line 442 | Line 661 | public class FutureTaskTest extends JSR1
661		* A runtime exception in task causes timed get to throw ExecutionException
662		*/
663		public void testTimedGet_ExecutionException2() throws Exception {
664	<	final FutureTask task = new FutureTask(new Callable() {
664	>	final ArithmeticException e = new ArithmeticException();
665	>	final PublicFutureTask task = new PublicFutureTask(new Callable() {
666		public Object call() {
667	<	return 5/0;
667	>	throw e;
668		}});
669
670		task.run();
671		try {
672	<	task.get(SHORT_DELAY_MS, MILLISECONDS);
672	>	task.get(LONG_DELAY_MS, MILLISECONDS);
673		shouldThrow();
674		} catch (ExecutionException success) {
675	<	assertTrue(success.getCause() instanceof ArithmeticException);
675	>	assertSame(e, success.getCause());
676	>	tryToConfuseDoneTask(task);
677		checkCompletedAbnormally(task, success.getCause());
678		}
679		}
680
681		/**
682	<	* Interrupting a waiting get causes it to throw InterruptedException
682	>	* get is interruptible
683		*/
684	<	public void testGet_InterruptedException() throws InterruptedException {
685	<	final CountDownLatch threadStarted = new CountDownLatch(1);
684	>	public void testGet_interruptible() {
685	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
686		final FutureTask task = new FutureTask(new NoOpCallable());
687	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
687	>	Thread t = newStartedThread(new CheckedRunnable() {
688		public void realRun() throws Exception {
689	<	threadStarted.countDown();
690	<	task.get();
689	>	Thread.currentThread().interrupt();
690	>	try {
691	>	task.get();
692	>	shouldThrow();
693	>	} catch (InterruptedException success) {}
694	>	assertFalse(Thread.interrupted());
695	>
696	>	pleaseInterrupt.countDown();
697	>	try {
698	>	task.get();
699	>	shouldThrow();
700	>	} catch (InterruptedException success) {}
701	>	assertFalse(Thread.interrupted());
702		}});
703
704	<	threadStarted.await();
704	>	await(pleaseInterrupt);
705		t.interrupt();
706	<	awaitTermination(t, MEDIUM_DELAY_MS);
706	>	awaitTermination(t);
707		checkNotDone(task);
708		}
709
710		/**
711	<	* Interrupting a waiting timed get causes it to throw InterruptedException
711	>	* timed get is interruptible
712		*/
713	<	public void testTimedGet_InterruptedException2() throws InterruptedException {
714	<	final CountDownLatch threadStarted = new CountDownLatch(1);
713	>	public void testTimedGet_interruptible() {
714	>	final CountDownLatch pleaseInterrupt = new CountDownLatch(1);
715		final FutureTask task = new FutureTask(new NoOpCallable());
716	<	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
716	>	Thread t = newStartedThread(new CheckedRunnable() {
717		public void realRun() throws Exception {
718	<	threadStarted.countDown();
719	<	task.get(LONG_DELAY_MS, MILLISECONDS);
718	>	Thread.currentThread().interrupt();
719	>	try {
720	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
721	>	shouldThrow();
722	>	} catch (InterruptedException success) {}
723	>	assertFalse(Thread.interrupted());
724	>
725	>	pleaseInterrupt.countDown();
726	>	try {
727	>	task.get(2*LONG_DELAY_MS, MILLISECONDS);
728	>	shouldThrow();
729	>	} catch (InterruptedException success) {}
730	>	assertFalse(Thread.interrupted());
731		}});
732
733	<	threadStarted.await();
733	>	await(pleaseInterrupt);
734		t.interrupt();
735	<	awaitTermination(t, MEDIUM_DELAY_MS);
735	>	awaitTermination(t);
736		checkNotDone(task);
737		}
738
#	Line 497 | Line 740 | public class FutureTaskTest extends JSR1
740		* A timed out timed get throws TimeoutException
741		*/
742		public void testGet_TimeoutException() throws Exception {
743	+	FutureTask task = new FutureTask(new NoOpCallable());
744	+	long startTime = System.nanoTime();
745		try {
746	<	FutureTask task = new FutureTask(new NoOpCallable());
502	<	task.get(1, MILLISECONDS);
746	>	task.get(timeoutMillis(), MILLISECONDS);
747		shouldThrow();
748	<	} catch (TimeoutException success) {}
748	>	} catch (TimeoutException success) {
749	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
750	>	}
751	>	}
752	>
753	>	/**
754	>	* timed get with null TimeUnit throws NullPointerException
755	>	*/
756	>	public void testGet_NullTimeUnit() throws Exception {
757	>	FutureTask task = new FutureTask(new NoOpCallable());
758	>	long[] timeouts = { Long.MIN_VALUE, 0L, Long.MAX_VALUE };
759	>
760	>	for (long timeout : timeouts) {
761	>	try {
762	>	task.get(timeout, null);
763	>	shouldThrow();
764	>	} catch (NullPointerException success) {}
765	>	}
766	>
767	>	task.run();
768	>
769	>	for (long timeout : timeouts) {
770	>	try {
771	>	task.get(timeout, null);
772	>	shouldThrow();
773	>	} catch (NullPointerException success) {}
774	>	}
775		}
776
777		}

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