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

Comparing jsr166/src/test/tck/ForkJoinPoolTest.java (file contents):
Revision 1.18 by dl, Mon Feb 22 11:25:16 2010 UTC vs.
Revision 1.27 by jsr166, Fri Sep 17 01:04:10 2010 UTC

#	Line 4 | Line 4
4		* http://creativecommons.org/licenses/publicdomain
5		*/
6
7	–
7		import junit.framework.*;
8	<	import java.util.*;
9	<	import java.util.concurrent.*;
8	>	import java.util.ArrayList;
9	>	import java.util.Collection;
10	>	import java.util.List;
11	>	import java.util.concurrent.Executors;
12	>	import java.util.concurrent.ExecutorService;
13	>	import java.util.concurrent.AbstractExecutorService;
14	>	import java.util.concurrent.CountDownLatch;
15	>	import java.util.concurrent.Callable;
16	>	import java.util.concurrent.Future;
17	>	import java.util.concurrent.ExecutionException;
18	>	import java.util.concurrent.CancellationException;
19	>	import java.util.concurrent.RejectedExecutionException;
20	>	import java.util.concurrent.ForkJoinPool;
21	>	import java.util.concurrent.ForkJoinTask;
22	>	import java.util.concurrent.ForkJoinWorkerThread;
23	>	import java.util.concurrent.RecursiveTask;
24	>	import java.util.concurrent.TimeUnit;
25	>	import java.util.concurrent.locks.ReentrantLock;
26		import static java.util.concurrent.TimeUnit.MILLISECONDS;
27	<	import java.util.concurrent.locks.*;
28	<	import java.security.*;
27	>	import java.security.AccessControlException;
28	>	import java.security.Policy;
29	>	import java.security.PrivilegedAction;
30	>	import java.security.PrivilegedExceptionAction;
31
32		public class ForkJoinPoolTest extends JSR166TestCase {
33		public static void main(String[] args) {
34	<	junit.textui.TestRunner.run (suite());
34	>	junit.textui.TestRunner.run(suite());
35		}
36	+
37		public static Test suite() {
38		return new TestSuite(ForkJoinPoolTest.class);
39		}
#	Line 39 | Line 57 | public class ForkJoinPoolTest extends JS
57		// Some classes to test extension and factory methods
58
59		static class MyHandler implements Thread.UncaughtExceptionHandler {
60	<	int catches = 0;
60	>	volatile int catches = 0;
61		public void uncaughtException(Thread t, Throwable e) {
62		++catches;
63		}
#	Line 48 | Line 66 | public class ForkJoinPoolTest extends JS
66		// to test handlers
67		static class FailingFJWSubclass extends ForkJoinWorkerThread {
68		public FailingFJWSubclass(ForkJoinPool p) { super(p) ; }
69	<	protected void onStart() { throw new Error(); }
69	>	protected void onStart() { super.onStart(); throw new Error(); }
70		}
71
72		static class FailingThreadFactory
73		implements ForkJoinPool.ForkJoinWorkerThreadFactory {
74	<	int calls = 0;
74	>	volatile int calls = 0;
75		public ForkJoinWorkerThread newThread(ForkJoinPool p) {
76		if (++calls > 1) return null;
77		return new FailingFJWSubclass(p);
#	Line 142 | Line 160 | public class ForkJoinPoolTest extends JS
160		* tasks, and quiescent running state.
161		*/
162		public void testDefaultInitialState() {
163	<	ForkJoinPool p = null;
163	>	ForkJoinPool p = new ForkJoinPool(1);
164		try {
165	<	p = new ForkJoinPool(1);
166	<	assertTrue(p.getFactory() ==
149	<	ForkJoinPool.defaultForkJoinWorkerThreadFactory);
165	>	assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory,
166	>	p.getFactory());
167		assertTrue(p.isQuiescent());
151	–	assertTrue(p.getMaintainsParallelism());
168		assertFalse(p.getAsyncMode());
169	<	assertTrue(p.getActiveThreadCount() == 0);
170	<	assertTrue(p.getStealCount() == 0);
171	<	assertTrue(p.getQueuedTaskCount() == 0);
172	<	assertTrue(p.getQueuedSubmissionCount() == 0);
169	>	assertEquals(0, p.getActiveThreadCount());
170	>	assertEquals(0, p.getStealCount());
171	>	assertEquals(0, p.getQueuedTaskCount());
172	>	assertEquals(0, p.getQueuedSubmissionCount());
173		assertFalse(p.hasQueuedSubmissions());
174		assertFalse(p.isShutdown());
175		assertFalse(p.isTerminating());
#	Line 178 | Line 194 | public class ForkJoinPoolTest extends JS
194		*/
195		public void testConstructor2() {
196		try {
197	<	new ForkJoinPool(1, null);
197	>	new ForkJoinPool(1, null, null, false);
198		shouldThrow();
199		} catch (NullPointerException success) {}
200		}
#	Line 188 | Line 204 | public class ForkJoinPoolTest extends JS
204		* getParallelism returns size set in constructor
205		*/
206		public void testGetParallelism() {
207	<	ForkJoinPool p = null;
192	<	try {
193	<	p = new ForkJoinPool(1);
194	<	assertTrue(p.getParallelism() == 1);
195	<	} finally {
196	<	joinPool(p);
197	<	}
198	<	}
199	<
200	<	/**
201	<	* setParallelism changes reported parallelism level.
202	<	*/
203	<	public void testSetParallelism() {
204	<	ForkJoinPool p = null;
205	<	try {
206	<	p = new ForkJoinPool(1);
207	<	assertTrue(p.getParallelism() == 1);
208	<	p.setParallelism(2);
209	<	assertTrue(p.getParallelism() == 2);
210	<	} finally {
211	<	joinPool(p);
212	<	}
213	<	}
214	<
215	<	/**
216	<	* setParallelism with argument <= 0 throws exception
217	<	*/
218	<	public void testSetParallelism2() {
219	<	ForkJoinPool p = null;
207	>	ForkJoinPool p = new ForkJoinPool(1);
208		try {
209	<	p = new ForkJoinPool(1);
222	<	assertTrue(p.getParallelism() == 1);
223	<	p.setParallelism(-2);
224	<	shouldThrow();
225	<	} catch (IllegalArgumentException success) {
209	>	assertEquals(1, p.getParallelism());
210		} finally {
211		joinPool(p);
212		}
#	Line 232 | Line 216 | public class ForkJoinPoolTest extends JS
216		* getPoolSize returns number of started workers.
217		*/
218		public void testGetPoolSize() {
219	<	ForkJoinPool p = null;
219	>	ForkJoinPool p = new ForkJoinPool(1);
220		try {
221	<	p = new ForkJoinPool(1);
238	<	assertTrue(p.getActiveThreadCount() == 0);
221	>	assertEquals(0, p.getActiveThreadCount());
222		Future<String> future = p.submit(new StringTask());
223	<	assertTrue(p.getPoolSize() == 1);
241	<
242	<	} finally {
243	<	joinPool(p);
244	<	}
245	<	}
246	<
247	<	/**
248	<	* setMaximumPoolSize changes size reported by getMaximumPoolSize.
249	<	*/
250	<	public void testSetMaximumPoolSize() {
251	<	ForkJoinPool p = null;
252	<	try {
253	<	p = new ForkJoinPool(1);
254	<	p.setMaximumPoolSize(2);
255	<	assertTrue(p.getMaximumPoolSize() == 2);
256	<	} finally {
257	<	joinPool(p);
258	<	}
259	<	}
260	<
261	<	/**
262	<	* setMaximumPoolSize with argument <= 0 throws exception
263	<	*/
264	<	public void testSetMaximumPoolSize2() {
265	<	ForkJoinPool p = null;
266	<	try {
267	<	p = new ForkJoinPool(1);
268	<	p.setMaximumPoolSize(-2);
269	<	shouldThrow();
270	<	} catch (IllegalArgumentException success) {
271	<	} finally {
272	<	joinPool(p);
273	<	}
274	<	}
275	<
276	<	/**
277	<	* setMaintainsParallelism changes policy reported by
278	<	* getMaintainsParallelism.
279	<	*/
280	<	public void testSetMaintainsParallelism() {
281	<	ForkJoinPool p = null;
282	<	try {
283	<	p = new ForkJoinPool(1);
284	<	p.setMaintainsParallelism(false);
285	<	assertFalse(p.getMaintainsParallelism());
286	<	} finally {
287	<	joinPool(p);
288	<	}
289	<	}
290	<
291	<	/**
292	<	* setAsyncMode changes policy reported by
293	<	* getAsyncMode.
294	<	*/
295	<	public void testSetAsyncMode() {
296	<	ForkJoinPool p = null;
297	<	try {
298	<	p = new ForkJoinPool(1);
299	<	p.setAsyncMode(true);
300	<	assertTrue(p.getAsyncMode());
223	>	assertEquals(1, p.getPoolSize());
224		} finally {
225		joinPool(p);
226		}
#	Line 310 | Line 233 | public class ForkJoinPoolTest extends JS
233		* performs its defined action
234		*/
235		public void testSetUncaughtExceptionHandler() throws InterruptedException {
236	<	ForkJoinPool p = null;
236	>	final CountDownLatch uncaughtExceptionHappened = new CountDownLatch(1);
237	>	final Thread.UncaughtExceptionHandler eh =
238	>	new Thread.UncaughtExceptionHandler() {
239	>	public void uncaughtException(Thread t, Throwable e) {
240	>	uncaughtExceptionHappened.countDown();
241	>	}};
242	>	ForkJoinPool p = new ForkJoinPool(1, new FailingThreadFactory(),
243	>	eh, false);
244		try {
245	<	p = new ForkJoinPool(1, new FailingThreadFactory());
316	<	MyHandler eh = new MyHandler();
317	<	p.setUncaughtExceptionHandler(eh);
318	<	assertEquals(eh, p.getUncaughtExceptionHandler());
245	>	assertSame(eh, p.getUncaughtExceptionHandler());
246		p.execute(new FailingTask());
247	<	Thread.sleep(MEDIUM_DELAY_MS);
321	<	assertTrue(eh.catches > 0);
322	<	} finally {
323	<	joinPool(p);
324	<	}
325	<	}
326	<
327	<	/**
328	<	* setUncaughtExceptionHandler of null removes handler
329	<	*/
330	<	public void testSetUncaughtExceptionHandler2() {
331	<	ForkJoinPool p = null;
332	<	try {
333	<	p = new ForkJoinPool(1);
334	<	p.setUncaughtExceptionHandler(null);
335	<	assertNull(p.getUncaughtExceptionHandler());
247	>	uncaughtExceptionHappened.await();
248		} finally {
249	+	//p.shutdownNow();
250		joinPool(p);
251		}
252		}
253
341	–
254		/**
255		* After invoking a single task, isQuiescent is true,
256		* queues are empty, threads are not active, and
257		* construction parameters continue to hold
258		*/
259		public void testisQuiescent() throws InterruptedException {
260	<	ForkJoinPool p = null;
260	>	ForkJoinPool p = new ForkJoinPool(2);
261		try {
350	–	p = new ForkJoinPool(2);
262		p.invoke(new FibTask(20));
263	<	assertTrue(p.getFactory() ==
264	<	ForkJoinPool.defaultForkJoinWorkerThreadFactory);
263	>	assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory,
264	>	p.getFactory());
265		Thread.sleep(MEDIUM_DELAY_MS);
266		assertTrue(p.isQuiescent());
356	–	assertTrue(p.getMaintainsParallelism());
267		assertFalse(p.getAsyncMode());
268	<	assertTrue(p.getActiveThreadCount() == 0);
269	<	assertTrue(p.getQueuedTaskCount() == 0);
270	<	assertTrue(p.getQueuedSubmissionCount() == 0);
268	>	assertEquals(0, p.getActiveThreadCount());
269	>	assertEquals(0, p.getQueuedTaskCount());
270	>	assertEquals(0, p.getQueuedSubmissionCount());
271		assertFalse(p.hasQueuedSubmissions());
272		assertFalse(p.isShutdown());
273		assertFalse(p.isTerminating());
#	Line 371 | Line 281 | public class ForkJoinPoolTest extends JS
281		* Completed submit(ForkJoinTask) returns result
282		*/
283		public void testSubmitForkJoinTask() throws Throwable {
284	<	ForkJoinPool p = null;
284	>	ForkJoinPool p = new ForkJoinPool(1);
285		try {
376	–	p = new ForkJoinPool(1);
286		ForkJoinTask<Integer> f = p.submit(new FibTask(8));
287	<	int r = f.get();
379	<	assertTrue(r == 21);
287	>	assertEquals(21, (int) f.get());
288		} finally {
289		joinPool(p);
290		}
#	Line 386 | Line 294 | public class ForkJoinPoolTest extends JS
294		* A task submitted after shutdown is rejected
295		*/
296		public void testSubmitAfterShutdown() {
297	<	ForkJoinPool p = null;
297	>	ForkJoinPool p = new ForkJoinPool(1);
298		try {
391	–	p = new ForkJoinPool(1);
299		p.shutdown();
300		assertTrue(p.isShutdown());
301	<	ForkJoinTask<Integer> f = p.submit(new FibTask(8));
302	<	shouldThrow();
303	<	} catch (RejectedExecutionException success) {
301	>	try {
302	>	ForkJoinTask<Integer> f = p.submit(new FibTask(8));
303	>	shouldThrow();
304	>	} catch (RejectedExecutionException success) {}
305		} finally {
306		joinPool(p);
307		}
#	Line 403 | Line 311 | public class ForkJoinPoolTest extends JS
311		* Pool maintains parallelism when using ManagedBlocker
312		*/
313		public void testBlockingForkJoinTask() throws Throwable {
314	<	ForkJoinPool p = null;
314	>	ForkJoinPool p = new ForkJoinPool(4);
315		try {
408	–	p = new ForkJoinPool(4);
316		ReentrantLock lock = new ReentrantLock();
317		ManagedLocker locker = new ManagedLocker(lock);
318		ForkJoinTask<Integer> f = new LockingFibTask(30, locker, lock);
319		p.execute(f);
320	<	assertTrue(p.getPoolSize() >= 4);
414	<	int r = f.get();
415	<	assertTrue(r == 832040);
320	>	assertEquals(832040, (int) f.get());
321		} finally {
322		p.shutdownNow(); // don't wait out shutdown
323		}
#	Line 422 | Line 327 | public class ForkJoinPoolTest extends JS
327		* pollSubmission returns unexecuted submitted task, if present
328		*/
329		public void testPollSubmission() {
330	<	SubFJP p = null;
330	>	SubFJP p = new SubFJP();
331		try {
427	–	p = new SubFJP();
332		ForkJoinTask a = p.submit(new MediumRunnable());
333		ForkJoinTask b = p.submit(new MediumRunnable());
334		ForkJoinTask c = p.submit(new MediumRunnable());
#	Line 440 | Line 344 | public class ForkJoinPoolTest extends JS
344		* drainTasksTo transfers unexecuted submitted tasks, if present
345		*/
346		public void testDrainTasksTo() {
347	<	SubFJP p = null;
347	>	SubFJP p = new SubFJP();
348		try {
445	–	p = new SubFJP();
349		ForkJoinTask a = p.submit(new MediumRunnable());
350		ForkJoinTask b = p.submit(new MediumRunnable());
351		ForkJoinTask c = p.submit(new MediumRunnable());
#	Line 466 | Line 369 | public class ForkJoinPoolTest extends JS
369		*/
370		public void testExecuteRunnable() throws Throwable {
371		ExecutorService e = new ForkJoinPool(1);
372	<	TrackedShortRunnable task = new TrackedShortRunnable();
373	<	assertFalse(task.done);
374	<	Future<?> future = e.submit(task);
375	<	future.get();
376	<	assertTrue(task.done);
372	>	try {
373	>	TrackedShortRunnable task = new TrackedShortRunnable();
374	>	assertFalse(task.done);
375	>	Future<?> future = e.submit(task);
376	>	future.get();
377	>	assertTrue(task.done);
378	>	} finally {
379	>	joinPool(e);
380	>	}
381		}
382
383
#	Line 479 | Line 386 | public class ForkJoinPoolTest extends JS
386		*/
387		public void testSubmitCallable() throws Throwable {
388		ExecutorService e = new ForkJoinPool(1);
389	<	Future<String> future = e.submit(new StringTask());
390	<	String result = future.get();
391	<	assertSame(TEST_STRING, result);
389	>	try {
390	>	Future<String> future = e.submit(new StringTask());
391	>	String result = future.get();
392	>	assertSame(TEST_STRING, result);
393	>	} finally {
394	>	joinPool(e);
395	>	}
396		}
397
398		/**
#	Line 489 | Line 400 | public class ForkJoinPoolTest extends JS
400		*/
401		public void testSubmitRunnable() throws Throwable {
402		ExecutorService e = new ForkJoinPool(1);
403	<	Future<?> future = e.submit(new NoOpRunnable());
404	<	future.get();
405	<	assertTrue(future.isDone());
403	>	try {
404	>	Future<?> future = e.submit(new NoOpRunnable());
405	>	future.get();
406	>	assertTrue(future.isDone());
407	>	} finally {
408	>	joinPool(e);
409	>	}
410		}
411
412		/**
#	Line 499 | Line 414 | public class ForkJoinPoolTest extends JS
414		*/
415		public void testSubmitRunnable2() throws Throwable {
416		ExecutorService e = new ForkJoinPool(1);
417	<	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
418	<	String result = future.get();
419	<	assertSame(TEST_STRING, result);
417	>	try {
418	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
419	>	String result = future.get();
420	>	assertSame(TEST_STRING, result);
421	>	} finally {
422	>	joinPool(e);
423	>	}
424		}
425
426	+
427		/**
428	<	* A submitted privileged action runs to completion
428	>	* A submitted privileged action to completion
429		*/
430		public void testSubmitPrivilegedAction() throws Throwable {
431	<	Runnable r = new CheckedRunnable() {
432	<	public void realRun() throws Exception {
433	<	ExecutorService e = new ForkJoinPool(1);
431	>	Policy savedPolicy = null;
432	>	try {
433	>	savedPolicy = Policy.getPolicy();
434	>	AdjustablePolicy policy = new AdjustablePolicy();
435	>	policy.addPermission(new RuntimePermission("getContextClassLoader"));
436	>	policy.addPermission(new RuntimePermission("setContextClassLoader"));
437	>	Policy.setPolicy(policy);
438	>	} catch (AccessControlException ok) {
439	>	return;
440	>	}
441	>
442	>	try {
443	>	ExecutorService e = new ForkJoinPool(1);
444	>	try {
445		Future future = e.submit(Executors.callable(new PrivilegedAction() {
446		public Object run() {
447		return TEST_STRING;
#	Line 518 | Line 449 | public class ForkJoinPoolTest extends JS
449
450		Object result = future.get();
451		assertSame(TEST_STRING, result);
452	<	}};
453	<
454	<	runWithPermissions(r, new RuntimePermission("modifyThread"));
452	>	} finally {
453	>	joinPool(e);
454	>	}
455	>	} finally {
456	>	Policy.setPolicy(savedPolicy);
457	>	}
458		}
459
460		/**
461	<	* A submitted privileged exception action runs to completion
461	>	* A submitted a privileged exception action runs to completion
462		*/
463		public void testSubmitPrivilegedExceptionAction() throws Throwable {
464	<	Runnable r = new CheckedRunnable() {
465	<	public void realRun() throws Exception {
466	<	ExecutorService e = new ForkJoinPool(1);
464	>	Policy savedPolicy = null;
465	>	try {
466	>	savedPolicy = Policy.getPolicy();
467	>	AdjustablePolicy policy = new AdjustablePolicy();
468	>	policy.addPermission(new RuntimePermission("getContextClassLoader"));
469	>	policy.addPermission(new RuntimePermission("setContextClassLoader"));
470	>	Policy.setPolicy(policy);
471	>	} catch (AccessControlException ok) {
472	>	return;
473	>	}
474	>
475	>	try {
476	>	ExecutorService e = new ForkJoinPool(1);
477	>	try {
478		Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() {
479		public Object run() {
480		return TEST_STRING;
#	Line 537 | Line 482 | public class ForkJoinPoolTest extends JS
482
483		Object result = future.get();
484		assertSame(TEST_STRING, result);
485	<	}};
486	<
487	<	runWithPermissions(r, new RuntimePermission("modifyThread"));
485	>	} finally {
486	>	joinPool(e);
487	>	}
488	>	} finally {
489	>	Policy.setPolicy(savedPolicy);
490	>	}
491		}
492
493		/**
494		* A submitted failed privileged exception action reports exception
495		*/
496		public void testSubmitFailedPrivilegedExceptionAction() throws Throwable {
497	<	Runnable r = new CheckedRunnable() {
498	<	public void realRun() throws Exception {
499	<	ExecutorService e = new ForkJoinPool(1);
497	>	Policy savedPolicy = null;
498	>	try {
499	>	savedPolicy = Policy.getPolicy();
500	>	AdjustablePolicy policy = new AdjustablePolicy();
501	>	policy.addPermission(new RuntimePermission("getContextClassLoader"));
502	>	policy.addPermission(new RuntimePermission("setContextClassLoader"));
503	>	Policy.setPolicy(policy);
504	>	} catch (AccessControlException ok) {
505	>	return;
506	>	}
507	>
508	>	try {
509	>	ExecutorService e = new ForkJoinPool(1);
510	>	try {
511		Future future = e.submit(Executors.callable(new PrivilegedExceptionAction() {
512		public Object run() throws Exception {
513		throw new IndexOutOfBoundsException();
514		}}));
515
516	<	try {
517	<	Object result = future.get();
518	<	shouldThrow();
519	<	} catch (ExecutionException success) {
520	<	assertTrue(success.getCause() instanceof IndexOutOfBoundsException);
521	<	}}};
522	<
523	<	runWithPermissions(r, new RuntimePermission("modifyThread"));
516	>	Object result = future.get();
517	>	shouldThrow();
518	>	} catch (ExecutionException success) {
519	>	assertTrue(success.getCause() instanceof IndexOutOfBoundsException);
520	>	} finally {
521	>	joinPool(e);
522	>	}
523	>	} finally {
524	>	Policy.setPolicy(savedPolicy);
525	>	}
526		}
527
528		/**
529		* execute(null runnable) throws NullPointerException
530		*/
531		public void testExecuteNullRunnable() {
532	+	ExecutorService e = new ForkJoinPool(1);
533	+	TrackedShortRunnable task = null;
534		try {
572	–	ExecutorService e = new ForkJoinPool(1);
573	–	TrackedShortRunnable task = null;
535		Future<?> future = e.submit(task);
536		shouldThrow();
537	<	} catch (NullPointerException success) {}
537	>	} catch (NullPointerException success) {
538	>	} finally {
539	>	joinPool(e);
540	>	}
541		}
542
543
#	Line 581 | Line 545 | public class ForkJoinPoolTest extends JS
545		* submit(null callable) throws NullPointerException
546		*/
547		public void testSubmitNullCallable() {
548	+	ExecutorService e = new ForkJoinPool(1);
549	+	StringTask t = null;
550		try {
585	–	ExecutorService e = new ForkJoinPool(1);
586	–	StringTask t = null;
551		Future<String> future = e.submit(t);
552		shouldThrow();
553	<	} catch (NullPointerException success) {}
553	>	} catch (NullPointerException success) {
554	>	} finally {
555	>	joinPool(e);
556	>	}
557		}
558
559
560		/**
561	<	* Blocking on submit(callable) throws InterruptedException if
595	<	* caller interrupted.
561	>	* submit(callable).get() throws InterruptedException if interrupted
562		*/
563		public void testInterruptedSubmit() throws InterruptedException {
564	<	final ForkJoinPool p = new ForkJoinPool(1);
565	<
566	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
567	<	public void realRun() throws Throwable {
568	<	p.submit(new CheckedCallable<Object>() {
569	<	public Object realCall() throws Throwable {
570	<	try {
571	<	Thread.sleep(MEDIUM_DELAY_MS);
572	<	} catch (InterruptedException ok) {
573	<	}
574	<	return null;
575	<	}}).get();
576	<	}});
577	<
578	<	t.start();
579	<	Thread.sleep(SHORT_DELAY_MS);
580	<	t.interrupt();
581	<	t.join();
582	<	p.shutdownNow();
583	<	joinPool(p);
564	>	final CountDownLatch submitted    = new CountDownLatch(1);
565	>	final CountDownLatch quittingTime = new CountDownLatch(1);
566	>	final ExecutorService p = new ForkJoinPool(1);
567	>	final Callable<Void> awaiter = new CheckedCallable<Void>() {
568	>	public Void realCall() throws InterruptedException {
569	>	assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS));
570	>	return null;
571	>	}};
572	>	try {
573	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
574	>	public void realRun() throws Exception {
575	>	Future<Void> future = p.submit(awaiter);
576	>	submitted.countDown();
577	>	future.get();
578	>	}});
579	>	t.start();
580	>	assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS));
581	>	t.interrupt();
582	>	t.join();
583	>	} finally {
584	>	quittingTime.countDown();
585	>	joinPool(p);
586	>	}
587		}
588
589		/**
#	Line 632 | Line 601 | public class ForkJoinPoolTest extends JS
601		shouldThrow();
602		} catch (ExecutionException success) {
603		assertTrue(success.getCause() instanceof ArithmeticException);
604	+	} finally {
605	+	joinPool(p);
606		}
636	–
637	–	joinPool(p);
607		}
608
609		/**

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