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

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.89 by jsr166, Tue Mar 28 18:13:10 2017 UTC vs.
Revision 1.96 by jsr166, Mon Jan 8 02:04:15 2018 UTC

#	Line 11 | Line 11 | import static java.util.concurrent.TimeU
11		import static java.util.concurrent.TimeUnit.SECONDS;
12
13		import java.util.ArrayList;
14	+	import java.util.Collection;
15	+	import java.util.Collections;
16		import java.util.HashSet;
17		import java.util.List;
18		import java.util.concurrent.BlockingQueue;
#	Line 73 | Line 75 | public class ScheduledExecutorTest exten
75		Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
76		assertSame(Boolean.TRUE, f.get());
77		assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
78	<	assertTrue(done.await(0L, MILLISECONDS));
78	>	assertEquals(0L, done.getCount());
79		}
80		}
81
#	Line 222 | Line 224 | public class ScheduledExecutorTest exten
224		}
225
226		/**
227	<	* execute(null) throws NPE
227	>	* Submitting null tasks throws NullPointerException
228		*/
229	<	public void testExecuteNull() throws InterruptedException {
229	>	public void testNullTaskSubmission() {
230		final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
231		try (PoolCleaner cleaner = cleaner(p)) {
232	<	try {
231	<	p.execute(null);
232	<	shouldThrow();
233	<	} catch (NullPointerException success) {}
232	>	assertNullTaskSubmissionThrowsNullPointerException(p);
233		}
234		}
235
236		/**
237	<	* schedule(null) throws NPE
237	>	* Submitted tasks are rejected when shutdown
238		*/
239	<	public void testScheduleNull() throws InterruptedException {
239	>	public void testSubmittedTasksRejectedWhenShutdown() throws InterruptedException {
240		final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
241	<	try (PoolCleaner cleaner = cleaner(p)) {
242	<	try {
243	<	TrackedCallable callable = null;
244	<	Future f = p.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
245	<	shouldThrow();
246	<	} catch (NullPointerException success) {}
247	<	}
248	<	}
241	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
242	>	final CountDownLatch threadsStarted = new CountDownLatch(p.getCorePoolSize());
243	>	final CountDownLatch done = new CountDownLatch(1);
244	>	final Runnable r = () -> {
245	>	threadsStarted.countDown();
246	>	for (;;) {
247	>	try {
248	>	done.await();
249	>	return;
250	>	} catch (InterruptedException shutdownNowDeliberatelyIgnored) {}
251	>	}};
252	>	final Callable<Boolean> c = () -> {
253	>	threadsStarted.countDown();
254	>	for (;;) {
255	>	try {
256	>	done.await();
257	>	return Boolean.TRUE;
258	>	} catch (InterruptedException shutdownNowDeliberatelyIgnored) {}
259	>	}};
260
261	<	/**
262	<	* execute throws RejectedExecutionException if shutdown
263	<	*/
264	<	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
265	<	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
266	<	try (PoolCleaner cleaner = cleaner(p)) {
267	<	try {
268	<	p.shutdown();
269	<	p.schedule(new NoOpRunnable(),
260	<	MEDIUM_DELAY_MS, MILLISECONDS);
261	<	shouldThrow();
262	<	} catch (RejectedExecutionException success) {
263	<	} catch (SecurityException ok) {}
264	<	}
265	<	}
261	>	try (PoolCleaner cleaner = cleaner(p, done)) {
262	>	for (int i = p.getCorePoolSize(); i--> 0; ) {
263	>	switch (rnd.nextInt(4)) {
264	>	case 0: p.execute(r); break;
265	>	case 1: assertFalse(p.submit(r).isDone()); break;
266	>	case 2: assertFalse(p.submit(r, Boolean.TRUE).isDone()); break;
267	>	case 3: assertFalse(p.submit(c).isDone()); break;
268	>	}
269	>	}
270
271	<	/**
272	<	* schedule throws RejectedExecutionException if shutdown
269	<	*/
270	<	public void testSchedule2_RejectedExecutionException() throws InterruptedException {
271	<	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
272	<	try (PoolCleaner cleaner = cleaner(p)) {
273	<	try {
274	<	p.shutdown();
275	<	p.schedule(new NoOpCallable(),
276	<	MEDIUM_DELAY_MS, MILLISECONDS);
277	<	shouldThrow();
278	<	} catch (RejectedExecutionException success) {
279	<	} catch (SecurityException ok) {}
280	<	}
281	<	}
271	>	// ScheduledThreadPoolExecutor has an unbounded queue, so never saturated.
272	>	await(threadsStarted);
273
274	<	/**
275	<	* schedule callable throws RejectedExecutionException if shutdown
276	<	*/
286	<	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
287	<	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
288	<	try (PoolCleaner cleaner = cleaner(p)) {
289	<	try {
274	>	if (rnd.nextBoolean())
275	>	p.shutdownNow();
276	>	else
277		p.shutdown();
278	<	p.schedule(new NoOpCallable(),
279	<	MEDIUM_DELAY_MS, MILLISECONDS);
280	<	shouldThrow();
294	<	} catch (RejectedExecutionException success) {
295	<	} catch (SecurityException ok) {}
296	<	}
297	<	}
278	>	// Pool is shutdown, but not yet terminated
279	>	assertTaskSubmissionsAreRejected(p);
280	>	assertFalse(p.isTerminated());
281
282	<	/**
283	<	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
301	<	*/
302	<	public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
303	<	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
304	<	try (PoolCleaner cleaner = cleaner(p)) {
305	<	try {
306	<	p.shutdown();
307	<	p.scheduleAtFixedRate(new NoOpRunnable(),
308	<	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
309	<	shouldThrow();
310	<	} catch (RejectedExecutionException success) {
311	<	} catch (SecurityException ok) {}
312	<	}
313	<	}
282	>	done.countDown();   // release blocking tasks
283	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
284
285	<	/**
316	<	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
317	<	*/
318	<	public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
319	<	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
320	<	try (PoolCleaner cleaner = cleaner(p)) {
321	<	try {
322	<	p.shutdown();
323	<	p.scheduleWithFixedDelay(new NoOpRunnable(),
324	<	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
325	<	shouldThrow();
326	<	} catch (RejectedExecutionException success) {
327	<	} catch (SecurityException ok) {}
285	>	assertTaskSubmissionsAreRejected(p);
286		}
287	+	assertEquals(p.getCorePoolSize(), p.getCompletedTaskCount());
288		}
289
290		/**
#	Line 745 | Line 704 | public class ScheduledExecutorTest exten
704		* - setExecuteExistingDelayedTasksAfterShutdownPolicy
705		* - setContinueExistingPeriodicTasksAfterShutdownPolicy
706		*/
707	+	@SuppressWarnings("FutureReturnValueIgnored")
708		public void testShutdown_cancellation() throws Exception {
709	<	final int poolSize = 6;
709	>	final int poolSize = 4;
710		final ScheduledThreadPoolExecutor p
711		= new ScheduledThreadPoolExecutor(poolSize);
712		final BlockingQueue<Runnable> q = p.getQueue();
713		final ThreadLocalRandom rnd = ThreadLocalRandom.current();
714	+	final long delay = rnd.nextInt(2);
715	+	final int rounds = rnd.nextInt(1, 3);
716		final boolean effectiveDelayedPolicy;
717		final boolean effectivePeriodicPolicy;
718		final boolean effectiveRemovePolicy;
#	Line 779 | Line 741 | public class ScheduledExecutorTest exten
741		assertEquals(effectiveRemovePolicy,
742		p.getRemoveOnCancelPolicy());
743
744	<	// System.err.println("effectiveDelayedPolicy="+effectiveDelayedPolicy);
783	<	// System.err.println("effectivePeriodicPolicy="+effectivePeriodicPolicy);
784	<	// System.err.println("effectiveRemovePolicy="+effectiveRemovePolicy);
744	>	final boolean periodicTasksContinue = effectivePeriodicPolicy && rnd.nextBoolean();
745
746		// Strategy: Wedge the pool with one wave of "blocker" tasks,
747	<	// then add a second wave that waits in the queue.
747	>	// then add a second wave that waits in the queue until unblocked.
748		final AtomicInteger ran = new AtomicInteger(0);
749		final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
750		final CountDownLatch unblock = new CountDownLatch(1);
751	+	final RuntimeException exception = new RuntimeException();
752
753	<	class Task extends CheckedRunnable {
754	<	public void realRun() throws InterruptedException {
755	<	ran.getAndIncrement();
756	<	poolBlocked.countDown();
757	<	await(unblock);
753	>	class Task implements Runnable {
754	>	public void run() {
755	>	try {
756	>	ran.getAndIncrement();
757	>	poolBlocked.countDown();
758	>	await(unblock);
759	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
760		}
761		}
762
763		class PeriodicTask extends Task {
764		PeriodicTask(int rounds) { this.rounds = rounds; }
765		int rounds;
766	<	public void realRun() throws InterruptedException {
767	<	if (--rounds == 0) super.realRun();
766	>	public void run() {
767	>	if (--rounds == 0) super.run();
768	>	// throw exception to surely terminate this periodic task,
769	>	// but in a separate execution and in a detectable way.
770	>	if (rounds == -1) throw exception;
771		}
772		}
773
#	Line 812 | Line 778 | public class ScheduledExecutorTest exten
778		List<Future<?>> periodics  = new ArrayList<>();
779
780		immediates.add(p.submit(task));
781	<	delayeds.add(p.schedule(task, 1, MILLISECONDS));
782	<	for (int rounds : new int[] { 1, 2 }) {
783	<	periodics.add(p.scheduleAtFixedRate(
784	<	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
785	<	periodics.add(p.scheduleWithFixedDelay(
820	<	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
821	<	}
781	>	delayeds.add(p.schedule(task, delay, MILLISECONDS));
782	>	periodics.add(p.scheduleAtFixedRate(
783	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
784	>	periodics.add(p.scheduleWithFixedDelay(
785	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
786
787		await(poolBlocked);
788
789		assertEquals(poolSize, ran.get());
790	+	assertEquals(poolSize, p.getActiveCount());
791		assertTrue(q.isEmpty());
792
793		// Add second wave of tasks.
794		immediates.add(p.submit(task));
795	<	long delay_ms = effectiveDelayedPolicy ? 1 : LONG_DELAY_MS;
796	<	delayeds.add(p.schedule(task, delay_ms, MILLISECONDS));
797	<	for (int rounds : new int[] { 1, 2 }) {
798	<	periodics.add(p.scheduleAtFixedRate(
799	<	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
835	<	periodics.add(p.scheduleWithFixedDelay(
836	<	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
837	<	}
795	>	delayeds.add(p.schedule(task, effectiveDelayedPolicy ? delay : LONG_DELAY_MS, MILLISECONDS));
796	>	periodics.add(p.scheduleAtFixedRate(
797	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
798	>	periodics.add(p.scheduleWithFixedDelay(
799	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
800
801		assertEquals(poolSize, q.size());
802		assertEquals(poolSize, ran.get());
#	Line 842 | Line 804 | public class ScheduledExecutorTest exten
804		immediates.forEach(
805		f -> assertTrue(((ScheduledFuture)f).getDelay(NANOSECONDS) <= 0L));
806
807	<	Stream.of(immediates, delayeds, periodics).flatMap(c -> c.stream())
807	>	Stream.of(immediates, delayeds, periodics).flatMap(Collection::stream)
808		.forEach(f -> assertFalse(f.isDone()));
809
810		try { p.shutdown(); } catch (SecurityException ok) { return; }
#	Line 864 | Line 826 | public class ScheduledExecutorTest exten
826		assertTrue(!effectiveDelayedPolicy
827		^ q.contains(delayeds.get(1)));
828		assertTrue(!effectivePeriodicPolicy
829	<	^ q.containsAll(periodics.subList(4, 8)));
829	>	^ q.containsAll(periodics.subList(2, 4)));
830
831		immediates.forEach(f -> assertFalse(f.isDone()));
832
#	Line 874 | Line 836 | public class ScheduledExecutorTest exten
836		else
837		assertTrue(delayeds.get(1).isCancelled());
838
839	<	if (testImplementationDetails) {
840	<	if (effectivePeriodicPolicy)
841	<	// TODO: ensure periodic tasks continue executing
842	<	periodics.forEach(
843	<	f -> {
882	<	assertFalse(f.isDone());
839	>	if (effectivePeriodicPolicy)
840	>	periodics.forEach(
841	>	f -> {
842	>	assertFalse(f.isDone());
843	>	if (!periodicTasksContinue) {
844		assertTrue(f.cancel(false));
845	<	});
846	<	else {
847	<	periodics.subList(0, 4).forEach(f -> assertFalse(f.isDone()));
848	<	periodics.subList(4, 8).forEach(f -> assertTrue(f.isCancelled()));
849	<	}
845	>	assertTrue(f.isCancelled());
846	>	}
847	>	});
848	>	else {
849	>	periodics.subList(0, 2).forEach(f -> assertFalse(f.isDone()));
850	>	periodics.subList(2, 4).forEach(f -> assertTrue(f.isCancelled()));
851		}
852
853		unblock.countDown();    // Release all pool threads
#	Line 896 | Line 858 | public class ScheduledExecutorTest exten
858
859		assertTrue(q.isEmpty());
860
861	+	Stream.of(immediates, delayeds, periodics).flatMap(Collection::stream)
862	+	.forEach(f -> assertTrue(f.isDone()));
863	+
864		for (Future<?> f : immediates) assertNull(f.get());
865
866		assertNull(delayeds.get(0).get());
#	Line 904 | Line 869 | public class ScheduledExecutorTest exten
869		else
870		assertTrue(delayeds.get(1).isCancelled());
871
872	<	periodics.forEach(f -> assertTrue(f.isDone()));
873	<	periodics.forEach(f -> assertTrue(f.isCancelled()));
872	>	if (periodicTasksContinue)
873	>	periodics.forEach(
874	>	f -> {
875	>	try { f.get(); }
876	>	catch (ExecutionException success) {
877	>	assertSame(exception, success.getCause());
878	>	}
879	>	catch (Throwable fail) { threadUnexpectedException(fail); }
880	>	});
881	>	else
882	>	periodics.forEach(f -> assertTrue(f.isCancelled()));
883
884	<	assertEquals(poolSize + 1 + (effectiveDelayedPolicy ? 1 : 0), ran.get());
884	>	assertEquals(poolSize + 1
885	>	+ (effectiveDelayedPolicy ? 1 : 0)
886	>	+ (periodicTasksContinue ? 2 : 0),
887	>	ran.get());
888		}
889
890		/**
#	Line 947 | Line 924 | public class ScheduledExecutorTest exten
924		}
925
926		/**
927	<	* invokeAny(null) throws NPE
927	>	* invokeAny(null) throws NullPointerException
928		*/
929		public void testInvokeAny1() throws Exception {
930		final ExecutorService e = new ScheduledThreadPoolExecutor(2);
#	Line 960 | Line 937 | public class ScheduledExecutorTest exten
937		}
938
939		/**
940	<	* invokeAny(empty collection) throws IAE
940	>	* invokeAny(empty collection) throws IllegalArgumentException
941		*/
942		public void testInvokeAny2() throws Exception {
943		final ExecutorService e = new ScheduledThreadPoolExecutor(2);
#	Line 973 | Line 950 | public class ScheduledExecutorTest exten
950		}
951
952		/**
953	<	* invokeAny(c) throws NPE if c has null elements
953	>	* invokeAny(c) throws NullPointerException if c has null elements
954		*/
955		public void testInvokeAny3() throws Exception {
956		CountDownLatch latch = new CountDownLatch(1);
#	Line 1035 | Line 1012 | public class ScheduledExecutorTest exten
1012		}
1013
1014		/**
1015	<	* invokeAll(empty collection) returns empty collection
1015	>	* invokeAll(empty collection) returns empty list
1016		*/
1017		public void testInvokeAll2() throws Exception {
1018		final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1019	+	final Collection<Callable<String>> emptyCollection
1020	+	= Collections.emptyList();
1021		try (PoolCleaner cleaner = cleaner(e)) {
1022	<	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
1022	>	List<Future<String>> r = e.invokeAll(emptyCollection);
1023		assertTrue(r.isEmpty());
1024		}
1025		}
#	Line 1103 | Line 1082 | public class ScheduledExecutorTest exten
1082		final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1083		try (PoolCleaner cleaner = cleaner(e)) {
1084		try {
1085	<	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
1085	>	e.invokeAny(null, randomTimeout(), randomTimeUnit());
1086		shouldThrow();
1087		} catch (NullPointerException success) {}
1088		}
1089		}
1090
1091		/**
1092	<	* timed invokeAny(,,null) throws NPE
1092	>	* timed invokeAny(,,null) throws NullPointerException
1093		*/
1094		public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1095		final ExecutorService e = new ScheduledThreadPoolExecutor(2);
#	Line 1118 | Line 1097 | public class ScheduledExecutorTest exten
1097		List<Callable<String>> l = new ArrayList<>();
1098		l.add(new StringTask());
1099		try {
1100	<	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1100	>	e.invokeAny(l, randomTimeout(), null);
1101		shouldThrow();
1102		} catch (NullPointerException success) {}
1103		}
1104		}
1105
1106		/**
1107	<	* timed invokeAny(empty collection) throws IAE
1107	>	* timed invokeAny(empty collection) throws IllegalArgumentException
1108		*/
1109		public void testTimedInvokeAny2() throws Exception {
1110		final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1111	+	final Collection<Callable<String>> emptyCollection
1112	+	= Collections.emptyList();
1113		try (PoolCleaner cleaner = cleaner(e)) {
1114		try {
1115	<	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1115	>	e.invokeAny(emptyCollection, randomTimeout(), randomTimeUnit());
1116		shouldThrow();
1117		} catch (IllegalArgumentException success) {}
1118		}
#	Line 1148 | Line 1129 | public class ScheduledExecutorTest exten
1129		l.add(latchAwaitingStringTask(latch));
1130		l.add(null);
1131		try {
1132	<	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1132	>	e.invokeAny(l, randomTimeout(), randomTimeUnit());
1133		shouldThrow();
1134		} catch (NullPointerException success) {}
1135		latch.countDown();
#	Line 1197 | Line 1178 | public class ScheduledExecutorTest exten
1178		final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1179		try (PoolCleaner cleaner = cleaner(e)) {
1180		try {
1181	<	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1181	>	e.invokeAll(null, randomTimeout(), randomTimeUnit());
1182		shouldThrow();
1183		} catch (NullPointerException success) {}
1184		}
#	Line 1212 | Line 1193 | public class ScheduledExecutorTest exten
1193		List<Callable<String>> l = new ArrayList<>();
1194		l.add(new StringTask());
1195		try {
1196	<	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1196	>	e.invokeAll(l, randomTimeout(), null);
1197		shouldThrow();
1198		} catch (NullPointerException success) {}
1199		}
1200		}
1201
1202		/**
1203	<	* timed invokeAll(empty collection) returns empty collection
1203	>	* timed invokeAll(empty collection) returns empty list
1204		*/
1205		public void testTimedInvokeAll2() throws Exception {
1206		final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1207	+	final Collection<Callable<String>> emptyCollection
1208	+	= Collections.emptyList();
1209		try (PoolCleaner cleaner = cleaner(e)) {
1210	<	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(),
1211	<	MEDIUM_DELAY_MS, MILLISECONDS);
1210	>	List<Future<String>> r =
1211	>	e.invokeAll(emptyCollection, randomTimeout(), randomTimeUnit());
1212		assertTrue(r.isEmpty());
1213		}
1214		}
#	Line 1240 | Line 1223 | public class ScheduledExecutorTest exten
1223		l.add(new StringTask());
1224		l.add(null);
1225		try {
1226	<	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1226	>	e.invokeAll(l, randomTimeout(), randomTimeUnit());
1227		shouldThrow();
1228		} catch (NullPointerException success) {}
1229		}
#	Line 1326 | Line 1309 | public class ScheduledExecutorTest exten
1309		* one-shot task from executing.
1310		* https://bugs.openjdk.java.net/browse/JDK-8051859
1311		*/
1312	+	@SuppressWarnings("FutureReturnValueIgnored")
1313		public void testScheduleWithFixedDelay_overflow() throws Exception {
1314		final CountDownLatch delayedDone = new CountDownLatch(1);
1315		final CountDownLatch immediateDone = new CountDownLatch(1);
1316		final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
1317		try (PoolCleaner cleaner = cleaner(p)) {
1318	<	final Runnable immediate = new Runnable() { public void run() {
1335	<	immediateDone.countDown();
1336	<	}};
1337	<	final Runnable delayed = new Runnable() { public void run() {
1318	>	final Runnable delayed = () -> {
1319		delayedDone.countDown();
1320	<	p.submit(immediate);
1321	<	}};
1320	>	p.submit(() -> immediateDone.countDown());
1321	>	};
1322		p.scheduleWithFixedDelay(delayed, 0L, Long.MAX_VALUE, SECONDS);
1323		await(delayedDone);
1324		await(immediateDone);

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