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Comparing jsr166/src/test/tck/ThreadPoolExecutorSubclassTest.java (file contents):
Revision 1.82 by jsr166, Sun Oct 4 07:23:20 2015 UTC vs.
Revision 1.107 by dl, Tue Mar 22 21:29:24 2022 UTC

#	Line 10 | Line 10 | import static java.util.concurrent.TimeU
10		import static java.util.concurrent.TimeUnit.SECONDS;
11
12		import java.util.ArrayList;
13	+	import java.util.Collection;
14	+	import java.util.Collections;
15		import java.util.List;
16		import java.util.concurrent.ArrayBlockingQueue;
17		import java.util.concurrent.BlockingQueue;
#	Line 17 | Line 19 | import java.util.concurrent.Callable;
19		import java.util.concurrent.CancellationException;
20		import java.util.concurrent.CountDownLatch;
21		import java.util.concurrent.ExecutionException;
20	–	import java.util.concurrent.Executors;
22		import java.util.concurrent.ExecutorService;
23		import java.util.concurrent.Future;
24		import java.util.concurrent.FutureTask;
25		import java.util.concurrent.LinkedBlockingQueue;
25	–	import java.util.concurrent.RejectedExecutionException;
26		import java.util.concurrent.RejectedExecutionHandler;
27		import java.util.concurrent.RunnableFuture;
28		import java.util.concurrent.SynchronousQueue;
29		import java.util.concurrent.ThreadFactory;
30	+	import java.util.concurrent.ThreadLocalRandom;
31		import java.util.concurrent.ThreadPoolExecutor;
32		import java.util.concurrent.TimeoutException;
33		import java.util.concurrent.TimeUnit;
#	Line 239 | Line 240 | public class ThreadPoolExecutorSubclassT
240		final Runnable task = new CheckedRunnable() {
241		public void realRun() { done.countDown(); }};
242		p.execute(task);
243	<	assertTrue(done.await(LONG_DELAY_MS, MILLISECONDS));
243	>	await(done);
244		}
245		}
246
#	Line 248 | Line 249 | public class ThreadPoolExecutorSubclassT
249		* thread becomes active
250		*/
251		public void testGetActiveCount() throws InterruptedException {
252	+	final CountDownLatch done = new CountDownLatch(1);
253		final ThreadPoolExecutor p =
254		new CustomTPE(2, 2,
255		LONG_DELAY_MS, MILLISECONDS,
256		new ArrayBlockingQueue<Runnable>(10));
257	<	try (PoolCleaner cleaner = cleaner(p)) {
257	>	try (PoolCleaner cleaner = cleaner(p, done)) {
258		final CountDownLatch threadStarted = new CountDownLatch(1);
257	–	final CountDownLatch done = new CountDownLatch(1);
259		assertEquals(0, p.getActiveCount());
260		p.execute(new CheckedRunnable() {
261		public void realRun() throws InterruptedException {
262		threadStarted.countDown();
263		assertEquals(1, p.getActiveCount());
264	<	done.await();
264	>	await(done);
265		}});
266	<	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
266	>	await(threadStarted);
267		assertEquals(1, p.getActiveCount());
267	–	done.countDown();
268		}
269		}
270
#	Line 334 | Line 334 | public class ThreadPoolExecutorSubclassT
334		public void realRun() throws InterruptedException {
335		threadStarted.countDown();
336		assertEquals(0, p.getCompletedTaskCount());
337	<	threadProceed.await();
337	>	await(threadProceed);
338		threadDone.countDown();
339		}});
340		await(threadStarted);
341		assertEquals(0, p.getCompletedTaskCount());
342		threadProceed.countDown();
343	<	threadDone.await();
343	>	await(threadDone);
344		long startTime = System.nanoTime();
345		while (p.getCompletedTaskCount() != 1) {
346		if (millisElapsedSince(startTime) > LONG_DELAY_MS)
#	Line 476 | Line 476 | public class ThreadPoolExecutorSubclassT
476		*/
477		public void testGetLargestPoolSize() throws InterruptedException {
478		final int THREADS = 3;
479	+	final CountDownLatch done = new CountDownLatch(1);
480		final ThreadPoolExecutor p =
481		new CustomTPE(THREADS, THREADS,
482		LONG_DELAY_MS, MILLISECONDS,
483		new ArrayBlockingQueue<Runnable>(10));
484	<	try (PoolCleaner cleaner = cleaner(p)) {
484	<	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
485	<	final CountDownLatch done = new CountDownLatch(1);
484	>	try (PoolCleaner cleaner = cleaner(p, done)) {
485		assertEquals(0, p.getLargestPoolSize());
486	+	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
487		for (int i = 0; i < THREADS; i++)
488		p.execute(new CheckedRunnable() {
489		public void realRun() throws InterruptedException {
490		threadsStarted.countDown();
491	<	done.await();
491	>	await(done);
492		assertEquals(THREADS, p.getLargestPoolSize());
493		}});
494	<	assertTrue(threadsStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
494	>	await(threadsStarted);
495		assertEquals(THREADS, p.getLargestPoolSize());
496	–	done.countDown();   // release pool
496		}
497		assertEquals(THREADS, p.getLargestPoolSize());
498		}
#	Line 521 | Line 520 | public class ThreadPoolExecutorSubclassT
520		* become active
521		*/
522		public void testGetPoolSize() throws InterruptedException {
523	+	final CountDownLatch done = new CountDownLatch(1);
524		final ThreadPoolExecutor p =
525		new CustomTPE(1, 1,
526		LONG_DELAY_MS, MILLISECONDS,
527		new ArrayBlockingQueue<Runnable>(10));
528	<	try (PoolCleaner cleaner = cleaner(p)) {
529	<	final CountDownLatch threadStarted = new CountDownLatch(1);
530	<	final CountDownLatch done = new CountDownLatch(1);
528	>	try (PoolCleaner cleaner = cleaner(p, done)) {
529		assertEquals(0, p.getPoolSize());
530	+	final CountDownLatch threadStarted = new CountDownLatch(1);
531		p.execute(new CheckedRunnable() {
532		public void realRun() throws InterruptedException {
533		threadStarted.countDown();
534		assertEquals(1, p.getPoolSize());
535	<	done.await();
535	>	await(done);
536		}});
537	<	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
537	>	await(threadStarted);
538		assertEquals(1, p.getPoolSize());
540	–	done.countDown();   // release pool
539		}
540		}
541
#	Line 545 | Line 543 | public class ThreadPoolExecutorSubclassT
543		* getTaskCount increases, but doesn't overestimate, when tasks submitted
544		*/
545		public void testGetTaskCount() throws InterruptedException {
546	+	final int TASKS = 3;
547	+	final CountDownLatch done = new CountDownLatch(1);
548		final ThreadPoolExecutor p =
549		new CustomTPE(1, 1,
550		LONG_DELAY_MS, MILLISECONDS,
551		new ArrayBlockingQueue<Runnable>(10));
552	<	try (PoolCleaner cleaner = cleaner(p)) {
552	>	try (PoolCleaner cleaner = cleaner(p, done)) {
553		final CountDownLatch threadStarted = new CountDownLatch(1);
554	–	final CountDownLatch done = new CountDownLatch(1);
554		assertEquals(0, p.getTaskCount());
555	+	assertEquals(0, p.getCompletedTaskCount());
556		p.execute(new CheckedRunnable() {
557		public void realRun() throws InterruptedException {
558		threadStarted.countDown();
559	<	assertEquals(1, p.getTaskCount());
560	<	done.await();
559	>	await(done);
560		}});
561	<	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
561	>	await(threadStarted);
562		assertEquals(1, p.getTaskCount());
563	<	done.countDown();
563	>	assertEquals(0, p.getCompletedTaskCount());
564	>	for (int i = 0; i < TASKS; i++) {
565	>	assertEquals(1 + i, p.getTaskCount());
566	>	p.execute(new CheckedRunnable() {
567	>	public void realRun() throws InterruptedException {
568	>	threadStarted.countDown();
569	>	assertEquals(1 + TASKS, p.getTaskCount());
570	>	await(done);
571	>	}});
572	>	}
573	>	assertEquals(1 + TASKS, p.getTaskCount());
574	>	assertEquals(0, p.getCompletedTaskCount());
575		}
576	+	assertEquals(1 + TASKS, p.getTaskCount());
577	+	assertEquals(1 + TASKS, p.getCompletedTaskCount());
578		}
579
580		/**
#	Line 596 | Line 608 | public class ThreadPoolExecutorSubclassT
608		public void realRun() throws InterruptedException {
609		assertFalse(p.isTerminating());
610		threadStarted.countDown();
611	<	done.await();
611	>	await(done);
612		}});
613	<	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
613	>	await(threadStarted);
614		assertFalse(p.isTerminating());
615		done.countDown();
616		try { p.shutdown(); } catch (SecurityException ok) { return; }
#	Line 624 | Line 636 | public class ThreadPoolExecutorSubclassT
636		public void realRun() throws InterruptedException {
637		assertFalse(p.isTerminating());
638		threadStarted.countDown();
639	<	done.await();
639	>	await(done);
640		}});
641	<	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
641	>	await(threadStarted);
642		assertFalse(p.isTerminating());
643		done.countDown();
644		try { p.shutdown(); } catch (SecurityException ok) { return; }
#	Line 640 | Line 652 | public class ThreadPoolExecutorSubclassT
652		* getQueue returns the work queue, which contains queued tasks
653		*/
654		public void testGetQueue() throws InterruptedException {
655	<	final BlockingQueue<Runnable> q = new ArrayBlockingQueue<Runnable>(10);
655	>	final CountDownLatch done = new CountDownLatch(1);
656	>	final BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(10);
657		final ThreadPoolExecutor p =
658		new CustomTPE(1, 1,
659		LONG_DELAY_MS, MILLISECONDS,
660		q);
661	<	try (PoolCleaner cleaner = cleaner(p)) {
661	>	try (PoolCleaner cleaner = cleaner(p, done)) {
662		final CountDownLatch threadStarted = new CountDownLatch(1);
663	<	final CountDownLatch done = new CountDownLatch(1);
664	<	FutureTask[] tasks = new FutureTask[5];
663	>	FutureTask[] rtasks = new FutureTask[5];
664	>	@SuppressWarnings("unchecked")
665	>	FutureTask<Boolean>[] tasks = (FutureTask<Boolean>[])rtasks;
666		for (int i = 0; i < tasks.length; i++) {
667	<	Callable task = new CheckedCallable<Boolean>() {
667	>	Callable<Boolean> task = new CheckedCallable<>() {
668		public Boolean realCall() throws InterruptedException {
669		threadStarted.countDown();
670		assertSame(q, p.getQueue());
671	<	done.await();
671	>	await(done);
672		return Boolean.TRUE;
673		}};
674	<	tasks[i] = new FutureTask(task);
674	>	tasks[i] = new FutureTask<>(task);
675		p.execute(tasks[i]);
676		}
677	<	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
677	>	await(threadStarted);
678		assertSame(q, p.getQueue());
679		assertFalse(q.contains(tasks[0]));
680		assertTrue(q.contains(tasks[tasks.length - 1]));
681		assertEquals(tasks.length - 1, q.size());
668	–	done.countDown();
682		}
683		}
684
#	Line 673 | Line 686 | public class ThreadPoolExecutorSubclassT
686		* remove(task) removes queued task, and fails to remove active task
687		*/
688		public void testRemove() throws InterruptedException {
689	<	BlockingQueue<Runnable> q = new ArrayBlockingQueue<Runnable>(10);
689	>	final CountDownLatch done = new CountDownLatch(1);
690	>	BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(10);
691		final ThreadPoolExecutor p =
692		new CustomTPE(1, 1,
693		LONG_DELAY_MS, MILLISECONDS,
694		q);
695	<	try (PoolCleaner cleaner = cleaner(p)) {
695	>	try (PoolCleaner cleaner = cleaner(p, done)) {
696		Runnable[] tasks = new Runnable[6];
697		final CountDownLatch threadStarted = new CountDownLatch(1);
684	–	final CountDownLatch done = new CountDownLatch(1);
698		for (int i = 0; i < tasks.length; i++) {
699		tasks[i] = new CheckedRunnable() {
700		public void realRun() throws InterruptedException {
701		threadStarted.countDown();
702	<	done.await();
702	>	await(done);
703		}};
704		p.execute(tasks[i]);
705		}
706	<	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
706	>	await(threadStarted);
707		assertFalse(p.remove(tasks[0]));
708		assertTrue(q.contains(tasks[4]));
709		assertTrue(q.contains(tasks[3]));
#	Line 700 | Line 713 | public class ThreadPoolExecutorSubclassT
713		assertTrue(q.contains(tasks[3]));
714		assertTrue(p.remove(tasks[3]));
715		assertFalse(q.contains(tasks[3]));
703	–	done.countDown();
716		}
717		}
718
#	Line 710 | Line 722 | public class ThreadPoolExecutorSubclassT
722		public void testPurge() throws InterruptedException {
723		final CountDownLatch threadStarted = new CountDownLatch(1);
724		final CountDownLatch done = new CountDownLatch(1);
725	<	final BlockingQueue<Runnable> q = new ArrayBlockingQueue<Runnable>(10);
725	>	final BlockingQueue<Runnable> q = new ArrayBlockingQueue<>(10);
726		final ThreadPoolExecutor p =
727		new CustomTPE(1, 1,
728		LONG_DELAY_MS, MILLISECONDS,
729		q);
730	<	try (PoolCleaner cleaner = cleaner(p)) {
731	<	FutureTask[] tasks = new FutureTask[5];
730	>	try (PoolCleaner cleaner = cleaner(p, done)) {
731	>	FutureTask[] rtasks = new FutureTask[5];
732	>	@SuppressWarnings("unchecked")
733	>	FutureTask<Boolean>[] tasks = (FutureTask<Boolean>[])rtasks;
734		for (int i = 0; i < tasks.length; i++) {
735	<	Callable task = new CheckedCallable<Boolean>() {
735	>	Callable<Boolean> task = new CheckedCallable<>() {
736		public Boolean realCall() throws InterruptedException {
737		threadStarted.countDown();
738	<	done.await();
738	>	await(done);
739		return Boolean.TRUE;
740		}};
741	<	tasks[i] = new FutureTask(task);
741	>	tasks[i] = new FutureTask<>(task);
742		p.execute(tasks[i]);
743		}
744	<	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
744	>	await(threadStarted);
745		assertEquals(tasks.length, p.getTaskCount());
746		assertEquals(tasks.length - 1, q.size());
747		assertEquals(1L, p.getActiveCount());
#	Line 740 | Line 754 | public class ThreadPoolExecutorSubclassT
754		p.purge();         // Nothing to do
755		assertEquals(tasks.length - 3, q.size());
756		assertEquals(tasks.length - 2, p.getTaskCount());
743	–	done.countDown();
757		}
758		}
759
#	Line 756 | Line 769 | public class ThreadPoolExecutorSubclassT
769		new CustomTPE(poolSize, poolSize,
770		LONG_DELAY_MS, MILLISECONDS,
771		new ArrayBlockingQueue<Runnable>(10));
772	<	CountDownLatch threadsStarted = new CountDownLatch(poolSize);
772	>	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
773		Runnable waiter = new CheckedRunnable() { public void realRun() {
774		threadsStarted.countDown();
775		try {
776	<	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
776	>	MILLISECONDS.sleep(LONGER_DELAY_MS);
777		} catch (InterruptedException success) {}
778		ran.getAndIncrement();
779		}};
780		for (int i = 0; i < count; i++)
781		p.execute(waiter);
782	<	assertTrue(threadsStarted.await(LONG_DELAY_MS, MILLISECONDS));
782	>	await(threadsStarted);
783		assertEquals(poolSize, p.getActiveCount());
784		assertEquals(0, p.getCompletedTaskCount());
785		final List<Runnable> queuedTasks;
#	Line 1122 | Line 1135 | public class ThreadPoolExecutorSubclassT
1135		}
1136
1137		/**
1138	<	* execute throws RejectedExecutionException if saturated.
1138	>	* Submitted tasks are rejected when saturated or shutdown
1139		*/
1140	<	public void testSaturatedExecute() {
1140	>	public void testSubmittedTasksRejectedWhenSaturatedOrShutdown() throws InterruptedException {
1141		final ThreadPoolExecutor p =
1142		new CustomTPE(1, 1,
1143		LONG_DELAY_MS, MILLISECONDS,
1144		new ArrayBlockingQueue<Runnable>(1));
1145	<	try (PoolCleaner cleaner = cleaner(p)) {
1146	<	final CountDownLatch done = new CountDownLatch(1);
1147	<	Runnable task = new CheckedRunnable() {
1148	<	public void realRun() throws InterruptedException {
1145	>	final int saturatedSize = saturatedSize(p);
1146	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
1147	>	final CountDownLatch threadsStarted = new CountDownLatch(p.getMaximumPoolSize());
1148	>	final CountDownLatch done = new CountDownLatch(1);
1149	>	final Runnable r = () -> {
1150	>	threadsStarted.countDown();
1151	>	for (;;) {
1152	>	try {
1153		done.await();
1154	<	}};
1155	<	for (int i = 0; i < 2; ++i)
1156	<	p.execute(task);
1157	<	for (int i = 0; i < 2; ++i) {
1154	>	return;
1155	>	} catch (InterruptedException shutdownNowDeliberatelyIgnored) {}
1156	>	}};
1157	>	final Callable<Boolean> c = () -> {
1158	>	threadsStarted.countDown();
1159	>	for (;;) {
1160		try {
1161	<	p.execute(task);
1162	<	shouldThrow();
1163	<	} catch (RejectedExecutionException success) {}
1164	<	assertTrue(p.getTaskCount() <= 2);
1161	>	done.await();
1162	>	return Boolean.TRUE;
1163	>	} catch (InterruptedException shutdownNowDeliberatelyIgnored) {}
1164	>	}};
1165	>	final boolean shutdownNow = rnd.nextBoolean();
1166	>
1167	>	try (PoolCleaner cleaner = cleaner(p, done)) {
1168	>	// saturate
1169	>	for (int i = saturatedSize; i--> 0; ) {
1170	>	switch (rnd.nextInt(4)) {
1171	>	case 0: p.execute(r); break;
1172	>	case 1: assertFalse(p.submit(r).isDone()); break;
1173	>	case 2: assertFalse(p.submit(r, Boolean.TRUE).isDone()); break;
1174	>	case 3: assertFalse(p.submit(c).isDone()); break;
1175	>	}
1176		}
1147	–	done.countDown();
1148	–	}
1149	–	}
1177
1178	<	/**
1179	<	* executor using CallerRunsPolicy runs task if saturated.
1153	<	*/
1154	<	public void testSaturatedExecute2() {
1155	<	final ThreadPoolExecutor p =
1156	<	new CustomTPE(1, 1,
1157	<	LONG_DELAY_MS, MILLISECONDS,
1158	<	new ArrayBlockingQueue<Runnable>(1),
1159	<	new CustomTPE.CallerRunsPolicy());
1160	<	try (PoolCleaner cleaner = cleaner(p)) {
1161	<	final CountDownLatch done = new CountDownLatch(1);
1162	<	Runnable blocker = new CheckedRunnable() {
1163	<	public void realRun() throws InterruptedException {
1164	<	done.await();
1165	<	}};
1166	<	p.execute(blocker);
1167	<	TrackedNoOpRunnable[] tasks = new TrackedNoOpRunnable[5];
1168	<	for (int i = 0; i < tasks.length; i++)
1169	<	tasks[i] = new TrackedNoOpRunnable();
1170	<	for (int i = 0; i < tasks.length; i++)
1171	<	p.execute(tasks[i]);
1172	<	for (int i = 1; i < tasks.length; i++)
1173	<	assertTrue(tasks[i].done);
1174	<	assertFalse(tasks[0].done); // waiting in queue
1175	<	done.countDown();
1176	<	}
1177	<	}
1178	>	await(threadsStarted);
1179	>	assertTaskSubmissionsAreRejected(p);
1180
1181	<	/**
1182	<	* executor using DiscardPolicy drops task if saturated.
1183	<	*/
1184	<	public void testSaturatedExecute3() {
1185	<	final TrackedNoOpRunnable[] tasks = new TrackedNoOpRunnable[5];
1186	<	for (int i = 0; i < tasks.length; ++i)
1187	<	tasks[i] = new TrackedNoOpRunnable();
1186	<	final ThreadPoolExecutor p =
1187	<	new CustomTPE(1, 1,
1188	<	LONG_DELAY_MS, MILLISECONDS,
1189	<	new ArrayBlockingQueue<Runnable>(1),
1190	<	new CustomTPE.DiscardPolicy());
1191	<	try (PoolCleaner cleaner = cleaner(p)) {
1192	<	final CountDownLatch done = new CountDownLatch(1);
1193	<	p.execute(awaiter(done));
1181	>	if (shutdownNow)
1182	>	p.shutdownNow();
1183	>	else
1184	>	p.shutdown();
1185	>	// Pool is shutdown, but not yet terminated
1186	>	assertTaskSubmissionsAreRejected(p);
1187	>	assertFalse(p.isTerminated());
1188
1189	<	for (TrackedNoOpRunnable task : tasks)
1190	<	p.execute(task);
1191	<	for (int i = 1; i < tasks.length; i++)
1192	<	assertFalse(tasks[i].done);
1199	<	done.countDown();
1189	>	done.countDown();   // release blocking tasks
1190	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
1191	>
1192	>	assertTaskSubmissionsAreRejected(p);
1193		}
1194	<	for (int i = 1; i < tasks.length; i++)
1195	<	assertFalse(tasks[i].done);
1196	<	assertTrue(tasks[0].done); // was waiting in queue
1194	>	assertEquals(saturatedSize(p)
1195	>	- (shutdownNow ? p.getQueue().remainingCapacity() : 0),
1196	>	p.getCompletedTaskCount());
1197		}
1198
1199		/**
1200		* executor using DiscardOldestPolicy drops oldest task if saturated.
1201		*/
1202	<	public void testSaturatedExecute4() {
1202	>	public void testSaturatedExecute_DiscardOldestPolicy() {
1203		final CountDownLatch done = new CountDownLatch(1);
1204		LatchAwaiter r1 = awaiter(done);
1205		LatchAwaiter r2 = awaiter(done);
#	Line 1215 | Line 1208 | public class ThreadPoolExecutorSubclassT
1208		new CustomTPE(1, 1,
1209		LONG_DELAY_MS, MILLISECONDS,
1210		new ArrayBlockingQueue<Runnable>(1),
1211	<	new CustomTPE.DiscardOldestPolicy());
1212	<	try (PoolCleaner cleaner = cleaner(p)) {
1211	>	new ThreadPoolExecutor.DiscardOldestPolicy());
1212	>	try (PoolCleaner cleaner = cleaner(p, done)) {
1213		assertEquals(LatchAwaiter.NEW, r1.state);
1214		assertEquals(LatchAwaiter.NEW, r2.state);
1215		assertEquals(LatchAwaiter.NEW, r3.state);
#	Line 1226 | Line 1219 | public class ThreadPoolExecutorSubclassT
1219		p.execute(r3);
1220		assertFalse(p.getQueue().contains(r2));
1221		assertTrue(p.getQueue().contains(r3));
1229	–	done.countDown();
1222		}
1223		assertEquals(LatchAwaiter.DONE, r1.state);
1224		assertEquals(LatchAwaiter.NEW, r2.state);
#	Line 1234 | Line 1226 | public class ThreadPoolExecutorSubclassT
1226		}
1227
1228		/**
1237	–	* execute throws RejectedExecutionException if shutdown
1238	–	*/
1239	–	public void testRejectedExecutionExceptionOnShutdown() {
1240	–	final ThreadPoolExecutor p =
1241	–	new CustomTPE(1, 1,
1242	–	LONG_DELAY_MS, MILLISECONDS,
1243	–	new ArrayBlockingQueue<Runnable>(1));
1244	–	try { p.shutdown(); } catch (SecurityException ok) { return; }
1245	–	try (PoolCleaner cleaner = cleaner(p)) {
1246	–	try {
1247	–	p.execute(new NoOpRunnable());
1248	–	shouldThrow();
1249	–	} catch (RejectedExecutionException success) {}
1250	–	}
1251	–	}
1252	–
1253	–	/**
1254	–	* execute using CallerRunsPolicy drops task on shutdown
1255	–	*/
1256	–	public void testCallerRunsOnShutdown() {
1257	–	final ThreadPoolExecutor p =
1258	–	new CustomTPE(1, 1,
1259	–	LONG_DELAY_MS, MILLISECONDS,
1260	–	new ArrayBlockingQueue<Runnable>(1),
1261	–	new CustomTPE.CallerRunsPolicy());
1262	–	try { p.shutdown(); } catch (SecurityException ok) { return; }
1263	–	try (PoolCleaner cleaner = cleaner(p)) {
1264	–	TrackedNoOpRunnable r = new TrackedNoOpRunnable();
1265	–	p.execute(r);
1266	–	assertFalse(r.done);
1267	–	}
1268	–	}
1269	–
1270	–	/**
1271	–	* execute using DiscardPolicy drops task on shutdown
1272	–	*/
1273	–	public void testDiscardOnShutdown() {
1274	–	final ThreadPoolExecutor p =
1275	–	new CustomTPE(1, 1,
1276	–	LONG_DELAY_MS, MILLISECONDS,
1277	–	new ArrayBlockingQueue<Runnable>(1),
1278	–	new CustomTPE.DiscardPolicy());
1279	–	try { p.shutdown(); } catch (SecurityException ok) { return; }
1280	–	try (PoolCleaner cleaner = cleaner(p)) {
1281	–	TrackedNoOpRunnable r = new TrackedNoOpRunnable();
1282	–	p.execute(r);
1283	–	assertFalse(r.done);
1284	–	}
1285	–	}
1286	–
1287	–	/**
1229		* execute using DiscardOldestPolicy drops task on shutdown
1230		*/
1231		public void testDiscardOldestOnShutdown() {
#	Line 1292 | Line 1233 | public class ThreadPoolExecutorSubclassT
1233		new CustomTPE(1, 1,
1234		LONG_DELAY_MS, MILLISECONDS,
1235		new ArrayBlockingQueue<Runnable>(1),
1236	<	new CustomTPE.DiscardOldestPolicy());
1236	>	new ThreadPoolExecutor.DiscardOldestPolicy());
1237
1238		try { p.shutdown(); } catch (SecurityException ok) { return; }
1239		try (PoolCleaner cleaner = cleaner(p)) {
#	Line 1303 | Line 1244 | public class ThreadPoolExecutorSubclassT
1244		}
1245
1246		/**
1247	<	* execute(null) throws NPE
1247	>	* Submitting null tasks throws NullPointerException
1248		*/
1249	<	public void testExecuteNull() {
1249	>	public void testNullTaskSubmission() {
1250		final ThreadPoolExecutor p =
1251		new CustomTPE(1, 2,
1252		1L, SECONDS,
1253		new ArrayBlockingQueue<Runnable>(10));
1254		try (PoolCleaner cleaner = cleaner(p)) {
1255	<	try {
1315	<	p.execute(null);
1316	<	shouldThrow();
1317	<	} catch (NullPointerException success) {}
1255	>	assertNullTaskSubmissionThrowsNullPointerException(p);
1256		}
1257		}
1258
#	Line 1358 | Line 1296 | public class ThreadPoolExecutorSubclassT
1296		public void testMaximumPoolSizeIllegalArgumentException2() {
1297		final ThreadPoolExecutor p =
1298		new CustomTPE(2, 3,
1299	<	LONG_DELAY_MS,
1300	<	MILLISECONDS,new ArrayBlockingQueue<Runnable>(10));
1299	>	LONG_DELAY_MS, MILLISECONDS,
1300	>	new ArrayBlockingQueue<Runnable>(10));
1301		try (PoolCleaner cleaner = cleaner(p)) {
1302		try {
1303		p.setMaximumPoolSize(-1);
#	Line 1461 | Line 1399 | public class ThreadPoolExecutorSubclassT
1399		}
1400
1401		/**
1402	<	* invokeAny(null) throws NPE
1402	>	* invokeAny(null) throws NullPointerException
1403		*/
1404		public void testInvokeAny1() throws Exception {
1405		final ExecutorService e =
#	Line 1477 | Line 1415 | public class ThreadPoolExecutorSubclassT
1415		}
1416
1417		/**
1418	<	* invokeAny(empty collection) throws IAE
1418	>	* invokeAny(empty collection) throws IllegalArgumentException
1419		*/
1420		public void testInvokeAny2() throws Exception {
1421		final ExecutorService e =
#	Line 1502 | Line 1440 | public class ThreadPoolExecutorSubclassT
1440		LONG_DELAY_MS, MILLISECONDS,
1441		new ArrayBlockingQueue<Runnable>(10));
1442		try (PoolCleaner cleaner = cleaner(e)) {
1443	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1443	>	List<Callable<String>> l = new ArrayList<>();
1444		l.add(latchAwaitingStringTask(latch));
1445		l.add(null);
1446		try {
#	Line 1522 | Line 1460 | public class ThreadPoolExecutorSubclassT
1460		LONG_DELAY_MS, MILLISECONDS,
1461		new ArrayBlockingQueue<Runnable>(10));
1462		try (PoolCleaner cleaner = cleaner(e)) {
1463	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1463	>	List<Callable<String>> l = new ArrayList<>();
1464		l.add(new NPETask());
1465		try {
1466		e.invokeAny(l);
#	Line 1542 | Line 1480 | public class ThreadPoolExecutorSubclassT
1480		LONG_DELAY_MS, MILLISECONDS,
1481		new ArrayBlockingQueue<Runnable>(10));
1482		try (PoolCleaner cleaner = cleaner(e)) {
1483	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1483	>	List<Callable<String>> l = new ArrayList<>();
1484		l.add(new StringTask());
1485		l.add(new StringTask());
1486		String result = e.invokeAny(l);
#	Line 1567 | Line 1505 | public class ThreadPoolExecutorSubclassT
1505		}
1506
1507		/**
1508	<	* invokeAll(empty collection) returns empty collection
1508	>	* invokeAll(empty collection) returns empty list
1509		*/
1510		public void testInvokeAll2() throws Exception {
1511		final ExecutorService e =
1512		new CustomTPE(2, 2,
1513		LONG_DELAY_MS, MILLISECONDS,
1514		new ArrayBlockingQueue<Runnable>(10));
1515	+	final Collection<Callable<String>> emptyCollection
1516	+	= Collections.emptyList();
1517		try (PoolCleaner cleaner = cleaner(e)) {
1518	<	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
1518	>	List<Future<String>> r = e.invokeAll(emptyCollection);
1519		assertTrue(r.isEmpty());
1520		}
1521		}
#	Line 1589 | Line 1529 | public class ThreadPoolExecutorSubclassT
1529		LONG_DELAY_MS, MILLISECONDS,
1530		new ArrayBlockingQueue<Runnable>(10));
1531		try (PoolCleaner cleaner = cleaner(e)) {
1532	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1532	>	List<Callable<String>> l = new ArrayList<>();
1533		l.add(new StringTask());
1534		l.add(null);
1535		try {
#	Line 1608 | Line 1548 | public class ThreadPoolExecutorSubclassT
1548		LONG_DELAY_MS, MILLISECONDS,
1549		new ArrayBlockingQueue<Runnable>(10));
1550		try (PoolCleaner cleaner = cleaner(e)) {
1551	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1551	>	List<Callable<String>> l = new ArrayList<>();
1552		l.add(new NPETask());
1553		List<Future<String>> futures = e.invokeAll(l);
1554		assertEquals(1, futures.size());
#	Line 1630 | Line 1570 | public class ThreadPoolExecutorSubclassT
1570		LONG_DELAY_MS, MILLISECONDS,
1571		new ArrayBlockingQueue<Runnable>(10));
1572		try (PoolCleaner cleaner = cleaner(e)) {
1573	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1573	>	List<Callable<String>> l = new ArrayList<>();
1574		l.add(new StringTask());
1575		l.add(new StringTask());
1576		List<Future<String>> futures = e.invokeAll(l);
#	Line 1650 | Line 1590 | public class ThreadPoolExecutorSubclassT
1590		new ArrayBlockingQueue<Runnable>(10));
1591		try (PoolCleaner cleaner = cleaner(e)) {
1592		try {
1593	<	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
1593	>	e.invokeAny(null, randomTimeout(), randomTimeUnit());
1594		shouldThrow();
1595		} catch (NullPointerException success) {}
1596		}
#	Line 1665 | Line 1605 | public class ThreadPoolExecutorSubclassT
1605		LONG_DELAY_MS, MILLISECONDS,
1606		new ArrayBlockingQueue<Runnable>(10));
1607		try (PoolCleaner cleaner = cleaner(e)) {
1608	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1608	>	List<Callable<String>> l = new ArrayList<>();
1609		l.add(new StringTask());
1610		try {
1611	<	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1611	>	e.invokeAny(l, randomTimeout(), null);
1612		shouldThrow();
1613		} catch (NullPointerException success) {}
1614		}
1615		}
1616
1617		/**
1618	<	* timed invokeAny(empty collection) throws IAE
1618	>	* timed invokeAny(empty collection) throws IllegalArgumentException
1619		*/
1620		public void testTimedInvokeAny2() throws Exception {
1621		final ExecutorService e =
1622		new CustomTPE(2, 2,
1623		LONG_DELAY_MS, MILLISECONDS,
1624		new ArrayBlockingQueue<Runnable>(10));
1625	+	final Collection<Callable<String>> emptyCollection
1626	+	= Collections.emptyList();
1627		try (PoolCleaner cleaner = cleaner(e)) {
1628		try {
1629	<	e.invokeAny(new ArrayList<Callable<String>>(),
1688	<	MEDIUM_DELAY_MS, MILLISECONDS);
1629	>	e.invokeAny(emptyCollection, randomTimeout(), randomTimeUnit());
1630		shouldThrow();
1631		} catch (IllegalArgumentException success) {}
1632		}
#	Line 1701 | Line 1642 | public class ThreadPoolExecutorSubclassT
1642		LONG_DELAY_MS, MILLISECONDS,
1643		new ArrayBlockingQueue<Runnable>(10));
1644		try (PoolCleaner cleaner = cleaner(e)) {
1645	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1645	>	List<Callable<String>> l = new ArrayList<>();
1646		l.add(latchAwaitingStringTask(latch));
1647		l.add(null);
1648		try {
1649	<	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1649	>	e.invokeAny(l, randomTimeout(), randomTimeUnit());
1650		shouldThrow();
1651		} catch (NullPointerException success) {}
1652		latch.countDown();
#	Line 1721 | Line 1662 | public class ThreadPoolExecutorSubclassT
1662		LONG_DELAY_MS, MILLISECONDS,
1663		new ArrayBlockingQueue<Runnable>(10));
1664		try (PoolCleaner cleaner = cleaner(e)) {
1665	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1665	>	long startTime = System.nanoTime();
1666	>	List<Callable<String>> l = new ArrayList<>();
1667		l.add(new NPETask());
1668		try {
1669	<	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1669	>	e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1670		shouldThrow();
1671		} catch (ExecutionException success) {
1672		assertTrue(success.getCause() instanceof NullPointerException);
1673		}
1674	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1675		}
1676		}
1677
#	Line 1741 | Line 1684 | public class ThreadPoolExecutorSubclassT
1684		LONG_DELAY_MS, MILLISECONDS,
1685		new ArrayBlockingQueue<Runnable>(10));
1686		try (PoolCleaner cleaner = cleaner(e)) {
1687	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1687	>	long startTime = System.nanoTime();
1688	>	List<Callable<String>> l = new ArrayList<>();
1689		l.add(new StringTask());
1690		l.add(new StringTask());
1691	<	String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1691	>	String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1692		assertSame(TEST_STRING, result);
1693	+	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1694		}
1695		}
1696
#	Line 1759 | Line 1704 | public class ThreadPoolExecutorSubclassT
1704		new ArrayBlockingQueue<Runnable>(10));
1705		try (PoolCleaner cleaner = cleaner(e)) {
1706		try {
1707	<	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1707	>	e.invokeAll(null, randomTimeout(), randomTimeUnit());
1708		shouldThrow();
1709		} catch (NullPointerException success) {}
1710		}
#	Line 1774 | Line 1719 | public class ThreadPoolExecutorSubclassT
1719		LONG_DELAY_MS, MILLISECONDS,
1720		new ArrayBlockingQueue<Runnable>(10));
1721		try (PoolCleaner cleaner = cleaner(e)) {
1722	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1722	>	List<Callable<String>> l = new ArrayList<>();
1723		l.add(new StringTask());
1724		try {
1725	<	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1725	>	e.invokeAll(l, randomTimeout(), null);
1726		shouldThrow();
1727		} catch (NullPointerException success) {}
1728		}
1729		}
1730
1731		/**
1732	<	* timed invokeAll(empty collection) returns empty collection
1732	>	* timed invokeAll(empty collection) returns empty list
1733		*/
1734		public void testTimedInvokeAll2() throws Exception {
1735		final ExecutorService e =
1736		new CustomTPE(2, 2,
1737		LONG_DELAY_MS, MILLISECONDS,
1738		new ArrayBlockingQueue<Runnable>(10));
1739	+	final Collection<Callable<String>> emptyCollection
1740	+	= Collections.emptyList();
1741		try (PoolCleaner cleaner = cleaner(e)) {
1742	<	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(),
1743	<	MEDIUM_DELAY_MS, MILLISECONDS);
1742	>	List<Future<String>> r =
1743	>	e.invokeAll(emptyCollection, randomTimeout(), randomTimeUnit());
1744		assertTrue(r.isEmpty());
1745		}
1746		}
#	Line 1807 | Line 1754 | public class ThreadPoolExecutorSubclassT
1754		LONG_DELAY_MS, MILLISECONDS,
1755		new ArrayBlockingQueue<Runnable>(10));
1756		try (PoolCleaner cleaner = cleaner(e)) {
1757	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1757	>	List<Callable<String>> l = new ArrayList<>();
1758		l.add(new StringTask());
1759		l.add(null);
1760		try {
1761	<	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1761	>	e.invokeAll(l, randomTimeout(), randomTimeUnit());
1762		shouldThrow();
1763		} catch (NullPointerException success) {}
1764		}
#	Line 1826 | Line 1773 | public class ThreadPoolExecutorSubclassT
1773		LONG_DELAY_MS, MILLISECONDS,
1774		new ArrayBlockingQueue<Runnable>(10));
1775		try (PoolCleaner cleaner = cleaner(e)) {
1776	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1776	>	List<Callable<String>> l = new ArrayList<>();
1777		l.add(new NPETask());
1778		List<Future<String>> futures =
1779	<	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1779	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1780		assertEquals(1, futures.size());
1781		try {
1782		futures.get(0).get();
#	Line 1849 | Line 1796 | public class ThreadPoolExecutorSubclassT
1796		LONG_DELAY_MS, MILLISECONDS,
1797		new ArrayBlockingQueue<Runnable>(10));
1798		try (PoolCleaner cleaner = cleaner(e)) {
1799	<	List<Callable<String>> l = new ArrayList<Callable<String>>();
1799	>	List<Callable<String>> l = new ArrayList<>();
1800		l.add(new StringTask());
1801		l.add(new StringTask());
1802		List<Future<String>> futures =
#	Line 1864 | Line 1811 | public class ThreadPoolExecutorSubclassT
1811		* timed invokeAll(c) cancels tasks not completed by timeout
1812		*/
1813		public void testTimedInvokeAll6() throws Exception {
1814	<	final ExecutorService e =
1815	<	new CustomTPE(2, 2,
1816	<	LONG_DELAY_MS, MILLISECONDS,
1817	<	new ArrayBlockingQueue<Runnable>(10));
1818	<	try (PoolCleaner cleaner = cleaner(e)) {
1819	<	for (long timeout = timeoutMillis();;) {
1814	>	for (long timeout = timeoutMillis();;) {
1815	>	final CountDownLatch done = new CountDownLatch(1);
1816	>	final Callable<String> waiter = new CheckedCallable<>() {
1817	>	public String realCall() {
1818	>	try { done.await(LONG_DELAY_MS, MILLISECONDS); }
1819	>	catch (InterruptedException ok) {}
1820	>	return "1"; }};
1821	>	final ExecutorService p =
1822	>	new CustomTPE(2, 2,
1823	>	LONG_DELAY_MS, MILLISECONDS,
1824	>	new ArrayBlockingQueue<Runnable>(10));
1825	>	try (PoolCleaner cleaner = cleaner(p, done)) {
1826		List<Callable<String>> tasks = new ArrayList<>();
1827		tasks.add(new StringTask("0"));
1828	<	tasks.add(Executors.callable(new LongPossiblyInterruptedRunnable(), TEST_STRING));
1828	>	tasks.add(waiter);
1829		tasks.add(new StringTask("2"));
1830		long startTime = System.nanoTime();
1831		List<Future<String>> futures =
1832	<	e.invokeAll(tasks, timeout, MILLISECONDS);
1832	>	p.invokeAll(tasks, timeout, MILLISECONDS);
1833		assertEquals(tasks.size(), futures.size());
1834		assertTrue(millisElapsedSince(startTime) >= timeout);
1835	<	for (Future future : futures)
1835	>	for (Future<?> future : futures)
1836		assertTrue(future.isDone());
1837		assertTrue(futures.get(1).isCancelled());
1838		try {
#	Line 1913 | Line 1866 | public class ThreadPoolExecutorSubclassT
1866		public void realRun() {
1867		done.countDown();
1868		}});
1869	<	assertTrue(done.await(LONG_DELAY_MS, MILLISECONDS));
1869	>	await(done);
1870		}
1871		}
1872
#	Line 1985 | Line 1938 | public class ThreadPoolExecutorSubclassT
1938		* (in part, a test of CustomTPE itself)
1939		*/
1940		public void testGet_cancelled() throws Exception {
1941	+	final CountDownLatch done = new CountDownLatch(1);
1942		final ExecutorService e =
1943		new CustomTPE(1, 1,
1944		LONG_DELAY_MS, MILLISECONDS,
1945		new LinkedBlockingQueue<Runnable>());
1946	<	try (PoolCleaner cleaner = cleaner(e)) {
1946	>	try (PoolCleaner cleaner = cleaner(e, done)) {
1947		final CountDownLatch blockerStarted = new CountDownLatch(1);
1994	–	final CountDownLatch done = new CountDownLatch(1);
1948		final List<Future<?>> futures = new ArrayList<>();
1949		for (int i = 0; i < 2; i++) {
1950		Runnable r = new CheckedRunnable() { public void realRun()
#	Line 2001 | Line 1954 | public class ThreadPoolExecutorSubclassT
1954		}};
1955		futures.add(e.submit(r));
1956		}
1957	<	assertTrue(blockerStarted.await(LONG_DELAY_MS, MILLISECONDS));
1957	>	await(blockerStarted);
1958		for (Future<?> future : futures) future.cancel(false);
1959		for (Future<?> future : futures) {
1960		try {
#	Line 2015 | Line 1968 | public class ThreadPoolExecutorSubclassT
1968		assertTrue(future.isCancelled());
1969		assertTrue(future.isDone());
1970		}
2018	–	done.countDown();
1971		}
1972		}
1973	+	@SuppressWarnings("removal")
1974	+	public void testFinalizeMethodCallsSuperFinalize() {
1975	+	new CustomTPE(1, 1,
1976	+	LONG_DELAY_MS, MILLISECONDS,
1977	+	new LinkedBlockingQueue<Runnable>()) {
1978	+
1979	+	/**
1980	+	* A finalize method without "throws Throwable", that
1981	+	* calls super.finalize().
1982	+	*/
1983	+	protected void finalize() {
1984	+	super.finalize();
1985	+	}
1986	+	}.shutdown();
1987	+	}
1988
1989		}

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