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

Comparing jsr166/src/test/tck/ForkJoinPoolTest.java (file contents):
Revision 1.19 by dl, Sun Feb 28 13:35:22 2010 UTC vs.
Revision 1.36 by jsr166, Mon Nov 29 07:42:58 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;
237	<	try {
238	<	p = new ForkJoinPool(1, new FailingThreadFactory());
239	<	MyHandler eh = new MyHandler();
240	<	p.setUncaughtExceptionHandler(eh);
241	<	assertEquals(eh, p.getUncaughtExceptionHandler());
242	<	p.execute(new FailingTask());
243	<	Thread.sleep(MEDIUM_DELAY_MS);
244	<	assertTrue(eh.catches > 0);
245	<	} finally {
246	<	p.shutdownNow();
247	<	joinPool(p);
325	<	}
326	<	}
327	<
328	<	/**
329	<	* setUncaughtExceptionHandler of null removes handler
330	<	*/
331	<	public void testSetUncaughtExceptionHandler2() {
332	<	ForkJoinPool p = null;
333	<	try {
334	<	p = new ForkJoinPool(1);
335	<	p.setUncaughtExceptionHandler(null);
336	<	assertNull(p.getUncaughtExceptionHandler());
236	>	final CountDownLatch uehInvoked = new CountDownLatch(1);
237	>	final Thread.UncaughtExceptionHandler eh =
238	>	new Thread.UncaughtExceptionHandler() {
239	>	public void uncaughtException(Thread t, Throwable e) {
240	>	uehInvoked.countDown();
241	>	}};
242	>	ForkJoinPool p = new ForkJoinPool(1, new FailingThreadFactory(),
243	>	eh, false);
244	>	try {
245	>	assertSame(eh, p.getUncaughtExceptionHandler());
246	>	p.execute(new FibTask(8));
247	>	assertTrue(uehInvoked.await(MEDIUM_DELAY_MS, MILLISECONDS));
248		} finally {
249	+	p.shutdownNow(); // failure might have prevented processing task
250		joinPool(p);
251		}
252		}
253
342	–
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 {
262	<	p = new ForkJoinPool(2);
262	>	assertTrue(p.isQuiescent());
263		p.invoke(new FibTask(20));
264	<	assertTrue(p.getFactory() ==
265	<	ForkJoinPool.defaultForkJoinWorkerThreadFactory);
266	<	Thread.sleep(MEDIUM_DELAY_MS);
264	>	assertSame(ForkJoinPool.defaultForkJoinWorkerThreadFactory,
265	>	p.getFactory());
266	>	Thread.sleep(SMALL_DELAY_MS);
267		assertTrue(p.isQuiescent());
357	–	assertTrue(p.getMaintainsParallelism());
268		assertFalse(p.getAsyncMode());
269	<	assertTrue(p.getActiveThreadCount() == 0);
270	<	assertTrue(p.getQueuedTaskCount() == 0);
271	<	assertTrue(p.getQueuedSubmissionCount() == 0);
269	>	assertEquals(0, p.getActiveThreadCount());
270	>	assertEquals(0, p.getQueuedTaskCount());
271	>	assertEquals(0, p.getQueuedSubmissionCount());
272		assertFalse(p.hasQueuedSubmissions());
273		assertFalse(p.isShutdown());
274		assertFalse(p.isTerminating());
#	Line 372 | Line 282 | public class ForkJoinPoolTest extends JS
282		* Completed submit(ForkJoinTask) returns result
283		*/
284		public void testSubmitForkJoinTask() throws Throwable {
285	<	ForkJoinPool p = null;
285	>	ForkJoinPool p = new ForkJoinPool(1);
286		try {
377	–	p = new ForkJoinPool(1);
287		ForkJoinTask<Integer> f = p.submit(new FibTask(8));
288	<	int r = f.get();
380	<	assertTrue(r == 21);
288	>	assertEquals(21, (int) f.get());
289		} finally {
290		joinPool(p);
291		}
#	Line 387 | Line 295 | public class ForkJoinPoolTest extends JS
295		* A task submitted after shutdown is rejected
296		*/
297		public void testSubmitAfterShutdown() {
298	<	ForkJoinPool p = null;
298	>	ForkJoinPool p = new ForkJoinPool(1);
299		try {
392	–	p = new ForkJoinPool(1);
300		p.shutdown();
301		assertTrue(p.isShutdown());
302	<	ForkJoinTask<Integer> f = p.submit(new FibTask(8));
303	<	shouldThrow();
304	<	} catch (RejectedExecutionException success) {
302	>	try {
303	>	ForkJoinTask<Integer> f = p.submit(new FibTask(8));
304	>	shouldThrow();
305	>	} catch (RejectedExecutionException success) {}
306		} finally {
307		joinPool(p);
308		}
#	Line 404 | Line 312 | public class ForkJoinPoolTest extends JS
312		* Pool maintains parallelism when using ManagedBlocker
313		*/
314		public void testBlockingForkJoinTask() throws Throwable {
315	<	ForkJoinPool p = null;
315	>	ForkJoinPool p = new ForkJoinPool(4);
316		try {
409	–	p = new ForkJoinPool(4);
317		ReentrantLock lock = new ReentrantLock();
318		ManagedLocker locker = new ManagedLocker(lock);
319	<	ForkJoinTask<Integer> f = new LockingFibTask(30, locker, lock);
319	>	ForkJoinTask<Integer> f = new LockingFibTask(20, locker, lock);
320		p.execute(f);
321	<	assertTrue(p.getPoolSize() >= 4);
415	<	int r = f.get();
416	<	assertTrue(r == 832040);
321	>	assertEquals(6765, (int) f.get());
322		} finally {
323		p.shutdownNow(); // don't wait out shutdown
324		}
#	Line 423 | Line 328 | public class ForkJoinPoolTest extends JS
328		* pollSubmission returns unexecuted submitted task, if present
329		*/
330		public void testPollSubmission() {
331	<	SubFJP p = null;
331	>	final CountDownLatch done = new CountDownLatch(1);
332	>	SubFJP p = new SubFJP();
333		try {
334	<	p = new SubFJP();
335	<	ForkJoinTask a = p.submit(new MediumRunnable());
336	<	ForkJoinTask b = p.submit(new MediumRunnable());
431	<	ForkJoinTask c = p.submit(new MediumRunnable());
334	>	ForkJoinTask a = p.submit(awaiter(done));
335	>	ForkJoinTask b = p.submit(awaiter(done));
336	>	ForkJoinTask c = p.submit(awaiter(done));
337		ForkJoinTask r = p.pollSubmission();
338		assertTrue(r == a || r == b || r == c);
339		assertFalse(r.isDone());
340		} finally {
341	+	done.countDown();
342		joinPool(p);
343		}
344		}
#	Line 441 | Line 347 | public class ForkJoinPoolTest extends JS
347		* drainTasksTo transfers unexecuted submitted tasks, if present
348		*/
349		public void testDrainTasksTo() {
350	<	SubFJP p = null;
350	>	final CountDownLatch done = new CountDownLatch(1);
351	>	SubFJP p = new SubFJP();
352		try {
353	<	p = new SubFJP();
354	<	ForkJoinTask a = p.submit(new MediumRunnable());
355	<	ForkJoinTask b = p.submit(new MediumRunnable());
449	<	ForkJoinTask c = p.submit(new MediumRunnable());
353	>	ForkJoinTask a = p.submit(awaiter(done));
354	>	ForkJoinTask b = p.submit(awaiter(done));
355	>	ForkJoinTask c = p.submit(awaiter(done));
356		ArrayList<ForkJoinTask> al = new ArrayList();
357		p.drainTasksTo(al);
358		assertTrue(al.size() > 0);
#	Line 455 | Line 361 | public class ForkJoinPoolTest extends JS
361		assertFalse(r.isDone());
362		}
363		} finally {
364	+	done.countDown();
365		joinPool(p);
366		}
367		}
#	Line 467 | Line 374 | public class ForkJoinPoolTest extends JS
374		*/
375		public void testExecuteRunnable() throws Throwable {
376		ExecutorService e = new ForkJoinPool(1);
377	<	TrackedShortRunnable task = new TrackedShortRunnable();
378	<	assertFalse(task.done);
379	<	Future<?> future = e.submit(task);
380	<	future.get();
381	<	assertTrue(task.done);
377	>	try {
378	>	TrackedRunnable task = trackedRunnable(SHORT_DELAY_MS);
379	>	assertFalse(task.isDone());
380	>	Future<?> future = e.submit(task);
381	>	assertNull(future.get());
382	>	assertNull(future.get(MEDIUM_DELAY_MS, MILLISECONDS));
383	>	assertTrue(task.isDone());
384	>	assertTrue(future.isDone());
385	>	assertFalse(future.isCancelled());
386	>	} finally {
387	>	joinPool(e);
388	>	}
389		}
390
391
#	Line 480 | Line 394 | public class ForkJoinPoolTest extends JS
394		*/
395		public void testSubmitCallable() throws Throwable {
396		ExecutorService e = new ForkJoinPool(1);
397	<	Future<String> future = e.submit(new StringTask());
398	<	String result = future.get();
399	<	assertSame(TEST_STRING, result);
397	>	try {
398	>	Future<String> future = e.submit(new StringTask());
399	>	assertSame(TEST_STRING, future.get());
400	>	assertTrue(future.isDone());
401	>	assertFalse(future.isCancelled());
402	>	} finally {
403	>	joinPool(e);
404	>	}
405		}
406
407		/**
#	Line 490 | Line 409 | public class ForkJoinPoolTest extends JS
409		*/
410		public void testSubmitRunnable() throws Throwable {
411		ExecutorService e = new ForkJoinPool(1);
412	<	Future<?> future = e.submit(new NoOpRunnable());
413	<	future.get();
414	<	assertTrue(future.isDone());
412	>	try {
413	>	Future<?> future = e.submit(new NoOpRunnable());
414	>	assertNull(future.get());
415	>	assertTrue(future.isDone());
416	>	assertFalse(future.isCancelled());
417	>	} finally {
418	>	joinPool(e);
419	>	}
420		}
421
422		/**
#	Line 500 | Line 424 | public class ForkJoinPoolTest extends JS
424		*/
425		public void testSubmitRunnable2() throws Throwable {
426		ExecutorService e = new ForkJoinPool(1);
427	<	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
428	<	String result = future.get();
429	<	assertSame(TEST_STRING, result);
427	>	try {
428	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
429	>	assertSame(TEST_STRING, future.get());
430	>	assertTrue(future.isDone());
431	>	assertFalse(future.isCancelled());
432	>	} finally {
433	>	joinPool(e);
434	>	}
435		}
436
437		/**
438		* A submitted privileged action runs to completion
439		*/
440	<	public void testSubmitPrivilegedAction() throws Throwable {
440	>	public void testSubmitPrivilegedAction() throws Exception {
441		Runnable r = new CheckedRunnable() {
442		public void realRun() throws Exception {
443		ExecutorService e = new ForkJoinPool(1);
#	Line 517 | Line 446 | public class ForkJoinPoolTest extends JS
446		return TEST_STRING;
447		}}));
448
449	<	Object result = future.get();
521	<	assertSame(TEST_STRING, result);
449	>	assertSame(TEST_STRING, future.get());
450		}};
451
452	<	runWithPermissions(r, new RuntimePermission("modifyThread"));
452	>	runWithPermissions(r,
453	>	new RuntimePermission("modifyThread"));
454		}
455
456		/**
457		* A submitted privileged exception action runs to completion
458		*/
459	<	public void testSubmitPrivilegedExceptionAction() throws Throwable {
459	>	public void testSubmitPrivilegedExceptionAction() throws Exception {
460		Runnable r = new CheckedRunnable() {
461		public void realRun() throws Exception {
462		ExecutorService e = new ForkJoinPool(1);
#	Line 536 | Line 465 | public class ForkJoinPoolTest extends JS
465		return TEST_STRING;
466		}}));
467
468	<	Object result = future.get();
540	<	assertSame(TEST_STRING, result);
468	>	assertSame(TEST_STRING, future.get());
469		}};
470
471		runWithPermissions(r, new RuntimePermission("modifyThread"));
#	Line 546 | Line 474 | public class ForkJoinPoolTest extends JS
474		/**
475		* A submitted failed privileged exception action reports exception
476		*/
477	<	public void testSubmitFailedPrivilegedExceptionAction() throws Throwable {
477	>	public void testSubmitFailedPrivilegedExceptionAction() throws Exception {
478		Runnable r = new CheckedRunnable() {
479		public void realRun() throws Exception {
480		ExecutorService e = new ForkJoinPool(1);
#	Line 556 | Line 484 | public class ForkJoinPoolTest extends JS
484		}}));
485
486		try {
487	<	Object result = future.get();
487	>	future.get();
488		shouldThrow();
489		} catch (ExecutionException success) {
490		assertTrue(success.getCause() instanceof IndexOutOfBoundsException);
#	Line 569 | Line 497 | public class ForkJoinPoolTest extends JS
497		* execute(null runnable) throws NullPointerException
498		*/
499		public void testExecuteNullRunnable() {
500	+	ExecutorService e = new ForkJoinPool(1);
501		try {
502	<	ExecutorService e = new ForkJoinPool(1);
574	<	TrackedShortRunnable task = null;
575	<	Future<?> future = e.submit(task);
502	>	Future<?> future = e.submit((Runnable) null);
503		shouldThrow();
504	<	} catch (NullPointerException success) {}
504	>	} catch (NullPointerException success) {
505	>	} finally {
506	>	joinPool(e);
507	>	}
508		}
509
510
#	Line 582 | Line 512 | public class ForkJoinPoolTest extends JS
512		* submit(null callable) throws NullPointerException
513		*/
514		public void testSubmitNullCallable() {
515	+	ExecutorService e = new ForkJoinPool(1);
516		try {
517	<	ExecutorService e = new ForkJoinPool(1);
587	<	StringTask t = null;
588	<	Future<String> future = e.submit(t);
517	>	Future<String> future = e.submit((Callable) null);
518		shouldThrow();
519	<	} catch (NullPointerException success) {}
519	>	} catch (NullPointerException success) {
520	>	} finally {
521	>	joinPool(e);
522	>	}
523		}
524
525
526		/**
527	<	* Blocking on submit(callable) throws InterruptedException if
596	<	* caller interrupted.
527	>	* submit(callable).get() throws InterruptedException if interrupted
528		*/
529		public void testInterruptedSubmit() throws InterruptedException {
530	<	final ForkJoinPool p = new ForkJoinPool(1);
531	<
532	<	Thread t = new Thread(new CheckedInterruptedRunnable() {
533	<	public void realRun() throws Throwable {
534	<	p.submit(new CheckedCallable<Object>() {
535	<	public Object realCall() throws Throwable {
536	<	try {
537	<	Thread.sleep(MEDIUM_DELAY_MS);
538	<	} catch (InterruptedException ok) {
539	<	}
540	<	return null;
541	<	}}).get();
542	<	}});
543	<
544	<	t.start();
545	<	Thread.sleep(SHORT_DELAY_MS);
546	<	t.interrupt();
547	<	t.join();
548	<	p.shutdownNow();
549	<	joinPool(p);
530	>	final CountDownLatch submitted    = new CountDownLatch(1);
531	>	final CountDownLatch quittingTime = new CountDownLatch(1);
532	>	final ExecutorService p = new ForkJoinPool(1);
533	>	final Callable<Void> awaiter = new CheckedCallable<Void>() {
534	>	public Void realCall() throws InterruptedException {
535	>	assertTrue(quittingTime.await(MEDIUM_DELAY_MS, MILLISECONDS));
536	>	return null;
537	>	}};
538	>	try {
539	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
540	>	public void realRun() throws Exception {
541	>	Future<Void> future = p.submit(awaiter);
542	>	submitted.countDown();
543	>	future.get();
544	>	}});
545	>	t.start();
546	>	assertTrue(submitted.await(MEDIUM_DELAY_MS, MILLISECONDS));
547	>	t.interrupt();
548	>	t.join();
549	>	} finally {
550	>	quittingTime.countDown();
551	>	joinPool(p);
552	>	}
553		}
554
555		/**
#	Line 633 | Line 567 | public class ForkJoinPoolTest extends JS
567		shouldThrow();
568		} catch (ExecutionException success) {
569		assertTrue(success.getCause() instanceof ArithmeticException);
570	+	} finally {
571	+	joinPool(p);
572		}
637	–
638	–	joinPool(p);
573		}
574
575		/**

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