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

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.23 by jsr166, Mon Nov 16 04:57:10 2009 UTC vs.
Revision 1.100 by jsr166, Wed Jan 27 01:57:24 2021 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.util.concurrent.atomic.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
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;
19	>	import java.util.concurrent.Callable;
20	>	import java.util.concurrent.CancellationException;
21	>	import java.util.concurrent.CountDownLatch;
22	>	import java.util.concurrent.ExecutionException;
23	>	import java.util.concurrent.ExecutorService;
24	>	import java.util.concurrent.Future;
25	>	import java.util.concurrent.RejectedExecutionException;
26	>	import java.util.concurrent.ScheduledFuture;
27	>	import java.util.concurrent.ScheduledThreadPoolExecutor;
28	>	import java.util.concurrent.ThreadFactory;
29	>	import java.util.concurrent.ThreadLocalRandom;
30	>	import java.util.concurrent.ThreadPoolExecutor;
31	>	import java.util.concurrent.atomic.AtomicBoolean;
32	>	import java.util.concurrent.atomic.AtomicInteger;
33	>	import java.util.concurrent.atomic.AtomicLong;
34	>	import java.util.stream.Stream;
35	>
36	>	import junit.framework.Test;
37	>	import junit.framework.TestSuite;
38
39		public class ScheduledExecutorTest extends JSR166TestCase {
40		public static void main(String[] args) {
41	<	junit.textui.TestRunner.run (suite());
41	>	main(suite(), args);
42		}
43		public static Test suite() {
44	<	return new TestSuite(ScheduledExecutorTest.class);
44	>	return new TestSuite(ScheduledExecutorTest.class);
45		}
46
22	–
47		/**
48		* execute successfully executes a runnable
49		*/
50	<	public void testExecute() {
51	<	try {
52	<	TrackedShortRunnable runnable =new TrackedShortRunnable();
53	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
54	<	p1.execute(runnable);
55	<	assertFalse(runnable.done);
56	<	Thread.sleep(SHORT_DELAY_MS);
57	<	try { p1.shutdown(); } catch (SecurityException ok) { return; }
34	<	try {
35	<	Thread.sleep(MEDIUM_DELAY_MS);
36	<	} catch (InterruptedException e){
37	<	unexpectedException();
38	<	}
39	<	assertTrue(runnable.done);
40	<	try { p1.shutdown(); } catch (SecurityException ok) { return; }
41	<	joinPool(p1);
50	>	public void testExecute() throws InterruptedException {
51	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
52	>	try (PoolCleaner cleaner = cleaner(p)) {
53	>	final CountDownLatch done = new CountDownLatch(1);
54	>	final Runnable task = new CheckedRunnable() {
55	>	public void realRun() { done.countDown(); }};
56	>	p.execute(task);
57	>	await(done);
58		}
43	–	catch (Exception e){
44	–	unexpectedException();
45	–	}
46	–
59		}
60
49	–
61		/**
62		* delayed schedule of callable successfully executes after delay
63		*/
64	<	public void testSchedule1() {
65	<	try {
66	<	TrackedCallable callable = new TrackedCallable();
67	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
68	<	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
69	<	assertFalse(callable.done);
70	<	Thread.sleep(MEDIUM_DELAY_MS);
71	<	assertTrue(callable.done);
72	<	assertEquals(Boolean.TRUE, f.get());
73	<	try { p1.shutdown(); } catch (SecurityException ok) { return; }
74	<	joinPool(p1);
75	<	} catch (RejectedExecutionException e){}
76	<	catch (Exception e){
77	<	e.printStackTrace();
78	<	unexpectedException();
64	>	public void testSchedule1() throws Exception {
65	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
66	>	try (PoolCleaner cleaner = cleaner(p)) {
67	>	final long startTime = System.nanoTime();
68	>	final CountDownLatch done = new CountDownLatch(1);
69	>	Callable<Boolean> task = new CheckedCallable<>() {
70	>	public Boolean realCall() {
71	>	done.countDown();
72	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
73	>	return Boolean.TRUE;
74	>	}};
75	>	Future<Boolean> f = p.schedule(task, timeoutMillis(), MILLISECONDS);
76	>	assertSame(Boolean.TRUE, f.get());
77	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
78	>	assertEquals(0L, done.getCount());
79		}
80		}
81
82		/**
83	<	*  delayed schedule of runnable successfully executes after delay
84	<	*/
85	<	public void testSchedule3() {
86	<	try {
87	<	TrackedShortRunnable runnable = new TrackedShortRunnable();
88	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
89	<	p1.schedule(runnable, SMALL_DELAY_MS, TimeUnit.MILLISECONDS);
90	<	Thread.sleep(SHORT_DELAY_MS);
91	<	assertFalse(runnable.done);
92	<	Thread.sleep(MEDIUM_DELAY_MS);
93	<	assertTrue(runnable.done);
94	<	try { p1.shutdown(); } catch (SecurityException ok) { return; }
95	<	joinPool(p1);
96	<	} catch (Exception e){
97	<	unexpectedException();
83	>	* delayed schedule of runnable successfully executes after delay
84	>	*/
85	>	public void testSchedule3() throws Exception {
86	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
87	>	try (PoolCleaner cleaner = cleaner(p)) {
88	>	final long startTime = System.nanoTime();
89	>	final CountDownLatch done = new CountDownLatch(1);
90	>	Runnable task = new CheckedRunnable() {
91	>	public void realRun() {
92	>	done.countDown();
93	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
94	>	}};
95	>	Future<?> f = p.schedule(task, timeoutMillis(), MILLISECONDS);
96	>	await(done);
97	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
98	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
99		}
100		}
101
102		/**
103		* scheduleAtFixedRate executes runnable after given initial delay
104		*/
105	<	public void testSchedule4() {
106	<	try {
107	<	TrackedShortRunnable runnable = new TrackedShortRunnable();
108	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
109	<	ScheduledFuture h = p1.scheduleAtFixedRate(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
110	<	assertFalse(runnable.done);
111	<	Thread.sleep(MEDIUM_DELAY_MS);
112	<	assertTrue(runnable.done);
113	<	h.cancel(true);
114	<	joinPool(p1);
115	<	} catch (Exception e){
116	<	unexpectedException();
105	>	public void testSchedule4() throws Exception {
106	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
107	>	try (PoolCleaner cleaner = cleaner(p)) {
108	>	final long startTime = System.nanoTime();
109	>	final CountDownLatch done = new CountDownLatch(1);
110	>	Runnable task = new CheckedRunnable() {
111	>	public void realRun() {
112	>	done.countDown();
113	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
114	>	}};
115	>	ScheduledFuture<?> f =
116	>	p.scheduleAtFixedRate(task, timeoutMillis(),
117	>	LONG_DELAY_MS, MILLISECONDS);
118	>	await(done);
119	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
120	>	f.cancel(true);
121		}
122		}
123
108	–	static class RunnableCounter implements Runnable {
109	–	AtomicInteger count = new AtomicInteger(0);
110	–	public void run() { count.getAndIncrement(); }
111	–	}
112	–
124		/**
125		* scheduleWithFixedDelay executes runnable after given initial delay
126		*/
127	<	public void testSchedule5() {
128	<	try {
129	<	TrackedShortRunnable runnable = new TrackedShortRunnable();
130	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
131	<	ScheduledFuture h = p1.scheduleWithFixedDelay(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
132	<	assertFalse(runnable.done);
133	<	Thread.sleep(MEDIUM_DELAY_MS);
134	<	assertTrue(runnable.done);
135	<	h.cancel(true);
136	<	joinPool(p1);
137	<	} catch (Exception e){
138	<	unexpectedException();
127	>	public void testSchedule5() throws Exception {
128	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
129	>	try (PoolCleaner cleaner = cleaner(p)) {
130	>	final long startTime = System.nanoTime();
131	>	final CountDownLatch done = new CountDownLatch(1);
132	>	Runnable task = new CheckedRunnable() {
133	>	public void realRun() {
134	>	done.countDown();
135	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
136	>	}};
137	>	ScheduledFuture<?> f =
138	>	p.scheduleWithFixedDelay(task, timeoutMillis(),
139	>	LONG_DELAY_MS, MILLISECONDS);
140	>	await(done);
141	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
142	>	f.cancel(true);
143		}
144		}
145
146	<	/**
147	<	* scheduleAtFixedRate executes series of tasks at given rate
148	<	*/
134	<	public void testFixedRateSequence() {
135	<	try {
136	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
137	<	RunnableCounter counter = new RunnableCounter();
138	<	ScheduledFuture h =
139	<	p1.scheduleAtFixedRate(counter, 0, 1, TimeUnit.MILLISECONDS);
140	<	Thread.sleep(SMALL_DELAY_MS);
141	<	h.cancel(true);
142	<	int c = counter.count.get();
143	<	// By time scaling conventions, we must have at least
144	<	// an execution per SHORT delay, but no more than one SHORT more
145	<	assertTrue(c >= SMALL_DELAY_MS / SHORT_DELAY_MS);
146	<	assertTrue(c <= SMALL_DELAY_MS + SHORT_DELAY_MS);
147	<	joinPool(p1);
148	<	} catch (Exception e){
149	<	unexpectedException();
150	<	}
151	<	}
152	<
153	<	/**
154	<	* scheduleWithFixedDelay executes series of tasks with given period
155	<	*/
156	<	public void testFixedDelaySequence() {
157	<	try {
158	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
159	<	RunnableCounter counter = new RunnableCounter();
160	<	ScheduledFuture h =
161	<	p1.scheduleWithFixedDelay(counter, 0, 1, TimeUnit.MILLISECONDS);
162	<	Thread.sleep(SMALL_DELAY_MS);
163	<	h.cancel(true);
164	<	int c = counter.count.get();
165	<	assertTrue(c >= SMALL_DELAY_MS / SHORT_DELAY_MS);
166	<	assertTrue(c <= SMALL_DELAY_MS + SHORT_DELAY_MS);
167	<	joinPool(p1);
168	<	} catch (Exception e){
169	<	unexpectedException();
170	<	}
146	>	static class RunnableCounter implements Runnable {
147	>	AtomicInteger count = new AtomicInteger(0);
148	>	public void run() { count.getAndIncrement(); }
149		}
150
173	–
151		/**
152	<	*  execute (null) throws NPE
153	<	*/
154	<	public void testExecuteNull() {
155	<	ScheduledThreadPoolExecutor se = null;
156	<	try {
157	<	se = new ScheduledThreadPoolExecutor(1);
158	<	se.execute(null);
159	<	shouldThrow();
160	<	} catch (NullPointerException success){}
161	<	catch (Exception e){
162	<	unexpectedException();
152	>	* scheduleAtFixedRate executes series of tasks at given rate.
153	>	* Eventually, it must hold that:
154	>	*   cycles - 1 <= elapsedMillis/delay < cycles
155	>	*/
156	>	public void testFixedRateSequence() throws InterruptedException {
157	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
158	>	try (PoolCleaner cleaner = cleaner(p)) {
159	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
160	>	final long startTime = System.nanoTime();
161	>	final int cycles = 8;
162	>	final CountDownLatch done = new CountDownLatch(cycles);
163	>	final Runnable task = new CheckedRunnable() {
164	>	public void realRun() { done.countDown(); }};
165	>	final ScheduledFuture<?> periodicTask =
166	>	p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
167	>	final int totalDelayMillis = (cycles - 1) * delay;
168	>	await(done, totalDelayMillis + LONG_DELAY_MS);
169	>	periodicTask.cancel(true);
170	>	final long elapsedMillis = millisElapsedSince(startTime);
171	>	assertTrue(elapsedMillis >= totalDelayMillis);
172	>	if (elapsedMillis <= cycles * delay)
173	>	return;
174	>	// else retry with longer delay
175	>	}
176	>	fail("unexpected execution rate");
177		}
187	–
188	–	joinPool(se);
178		}
179
180		/**
181	<	* schedule (null) throws NPE
182	<	*/
183	<	public void testScheduleNull() {
184	<	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
185	<	try {
186	<	TrackedCallable callable = null;
187	<	Future f = se.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
188	<	shouldThrow();
189	<	} catch (NullPointerException success){}
190	<	catch (Exception e){
191	<	unexpectedException();
181	>	* scheduleWithFixedDelay executes series of tasks with given period.
182	>	* Eventually, it must hold that each task starts at least delay and at
183	>	* most 2 * delay after the termination of the previous task.
184	>	*/
185	>	public void testFixedDelaySequence() throws InterruptedException {
186	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
187	>	try (PoolCleaner cleaner = cleaner(p)) {
188	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
189	>	final long startTime = System.nanoTime();
190	>	final AtomicLong previous = new AtomicLong(startTime);
191	>	final AtomicBoolean tryLongerDelay = new AtomicBoolean(false);
192	>	final int cycles = 8;
193	>	final CountDownLatch done = new CountDownLatch(cycles);
194	>	final int d = delay;
195	>	final Runnable task = new CheckedRunnable() {
196	>	public void realRun() {
197	>	long now = System.nanoTime();
198	>	long elapsedMillis
199	>	= NANOSECONDS.toMillis(now - previous.get());
200	>	if (done.getCount() == cycles) { // first execution
201	>	if (elapsedMillis >= d)
202	>	tryLongerDelay.set(true);
203	>	} else {
204	>	assertTrue(elapsedMillis >= d);
205	>	if (elapsedMillis >= 2 * d)
206	>	tryLongerDelay.set(true);
207	>	}
208	>	previous.set(now);
209	>	done.countDown();
210	>	}};
211	>	final ScheduledFuture<?> periodicTask =
212	>	p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
213	>	final int totalDelayMillis = (cycles - 1) * delay;
214	>	await(done, totalDelayMillis + cycles * LONG_DELAY_MS);
215	>	periodicTask.cancel(true);
216	>	final long elapsedMillis = millisElapsedSince(startTime);
217	>	assertTrue(elapsedMillis >= totalDelayMillis);
218	>	if (!tryLongerDelay.get())
219	>	return;
220	>	// else retry with longer delay
221	>	}
222	>	fail("unexpected execution rate");
223		}
204	–	joinPool(se);
224		}
225
226		/**
227	<	* execute throws RejectedExecutionException if shutdown
227	>	* Submitting null tasks throws NullPointerException
228		*/
229	<	public void testSchedule1_RejectedExecutionException() {
230	<	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
231	<	try {
232	<	se.shutdown();
214	<	se.schedule(new NoOpRunnable(),
215	<	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
216	<	shouldThrow();
217	<	} catch (RejectedExecutionException success){
218	<	} catch (SecurityException ok) {
229	>	public void testNullTaskSubmission() {
230	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
231	>	try (PoolCleaner cleaner = cleaner(p)) {
232	>	assertNullTaskSubmissionThrowsNullPointerException(p);
233		}
220	–
221	–	joinPool(se);
222	–
234		}
235
236		/**
237	<	* schedule throws RejectedExecutionException if shutdown
238	<	*/
239	<	public void testSchedule2_RejectedExecutionException() {
240	<	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
241	<	try {
242	<	se.shutdown();
243	<	se.schedule(new NoOpCallable(),
244	<	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
245	<	shouldThrow();
246	<	} catch (RejectedExecutionException success){
247	<	} catch (SecurityException ok) {
248	<	}
249	<	joinPool(se);
250	<	}
237	>	* Submitted tasks are rejected when shutdown
238	>	*/
239	>	public void testSubmittedTasksRejectedWhenShutdown() throws InterruptedException {
240	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
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	>	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 callable throws RejectedExecutionException if shutdown
243	<	*/
244	<	public void testSchedule3_RejectedExecutionException() {
245	<	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
246	<	try {
247	<	se.shutdown();
248	<	se.schedule(new NoOpCallable(),
249	<	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
250	<	shouldThrow();
251	<	} catch (RejectedExecutionException success){
252	<	} catch (SecurityException ok) {
253	<	}
254	<	joinPool(se);
255	<	}
271	>	// ScheduledThreadPoolExecutor has an unbounded queue, so never saturated.
272	>	await(threadsStarted);
273
274	<	/**
275	<	*  scheduleAtFixedRate throws RejectedExecutionException if shutdown
276	<	*/
277	<	public void testScheduleAtFixedRate1_RejectedExecutionException() {
278	<	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
279	<	try {
280	<	se.shutdown();
281	<	se.scheduleAtFixedRate(new NoOpRunnable(),
282	<	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
283	<	shouldThrow();
284	<	} catch (RejectedExecutionException success){
285	<	} catch (SecurityException ok) {
286	<	}
287	<	joinPool(se);
288	<	}
289	<
290	<	/**
291	<	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
292	<	*/
293	<	public void testScheduleWithFixedDelay1_RejectedExecutionException() {
294	<	ScheduledThreadPoolExecutor se = new ScheduledThreadPoolExecutor(1);
295	<	try {
296	<	se.shutdown();
297	<	se.scheduleWithFixedDelay(new NoOpRunnable(),
298	<	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
299	<	shouldThrow();
300	<	} catch (RejectedExecutionException success){
301	<	} catch (SecurityException ok) {
274	>	if (rnd.nextBoolean())
275	>	p.shutdownNow();
276	>	else
277	>	p.shutdown();
278	>	// Pool is shutdown, but not yet terminated
279	>	assertTaskSubmissionsAreRejected(p);
280	>	assertFalse(p.isTerminated());
281	>
282	>	done.countDown();   // release blocking tasks
283	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
284	>
285	>	assertTaskSubmissionsAreRejected(p);
286	>	}
287	>	assertEquals(p.getCorePoolSize(), p.getCompletedTaskCount());
288	>	}
289	>
290	>	/**
291	>	* getActiveCount increases but doesn't overestimate, when a
292	>	* thread becomes active
293	>	*/
294	>	public void testGetActiveCount() throws InterruptedException {
295	>	final CountDownLatch done = new CountDownLatch(1);
296	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
297	>	try (PoolCleaner cleaner = cleaner(p, done)) {
298	>	final CountDownLatch threadStarted = new CountDownLatch(1);
299	>	assertEquals(0, p.getActiveCount());
300	>	p.execute(new CheckedRunnable() {
301	>	public void realRun() throws InterruptedException {
302	>	threadStarted.countDown();
303	>	assertEquals(1, p.getActiveCount());
304	>	await(done);
305	>	}});
306	>	await(threadStarted);
307	>	assertEquals(1, p.getActiveCount());
308	>	}
309	>	}
310	>
311	>	/**
312	>	* getCompletedTaskCount increases, but doesn't overestimate,
313	>	* when tasks complete
314	>	*/
315	>	public void testGetCompletedTaskCount() throws InterruptedException {
316	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
317	>	try (PoolCleaner cleaner = cleaner(p)) {
318	>	final CountDownLatch threadStarted = new CountDownLatch(1);
319	>	final CountDownLatch threadProceed = new CountDownLatch(1);
320	>	final CountDownLatch threadDone = new CountDownLatch(1);
321	>	assertEquals(0, p.getCompletedTaskCount());
322	>	p.execute(new CheckedRunnable() {
323	>	public void realRun() throws InterruptedException {
324	>	threadStarted.countDown();
325	>	assertEquals(0, p.getCompletedTaskCount());
326	>	await(threadProceed);
327	>	threadDone.countDown();
328	>	}});
329	>	await(threadStarted);
330	>	assertEquals(0, p.getCompletedTaskCount());
331	>	threadProceed.countDown();
332	>	await(threadDone);
333	>	long startTime = System.nanoTime();
334	>	while (p.getCompletedTaskCount() != 1) {
335	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
336	>	fail("timed out");
337	>	Thread.yield();
338	>	}
339		}
286	–	joinPool(se);
340		}
341
342		/**
343	<	*  getActiveCount increases but doesn't overestimate, when a
291	<	*  thread becomes active
343	>	* getCorePoolSize returns size given in constructor if not otherwise set
344		*/
345	<	public void testGetActiveCount() {
346	<	ScheduledThreadPoolExecutor p2 = new ScheduledThreadPoolExecutor(2);
347	<	assertEquals(0, p2.getActiveCount());
348	<	p2.execute(new SmallRunnable());
349	<	try {
350	<	Thread.sleep(SHORT_DELAY_MS);
351	<	} catch (Exception e){
352	<	unexpectedException();
345	>	public void testGetCorePoolSize() throws InterruptedException {
346	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
347	>	try (PoolCleaner cleaner = cleaner(p)) {
348	>	assertEquals(1, p.getCorePoolSize());
349	>	}
350	>	}
351	>
352	>	/**
353	>	* getLargestPoolSize increases, but doesn't overestimate, when
354	>	* multiple threads active
355	>	*/
356	>	public void testGetLargestPoolSize() throws InterruptedException {
357	>	final int THREADS = 3;
358	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
359	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
360	>	final CountDownLatch done = new CountDownLatch(1);
361	>	try (PoolCleaner cleaner = cleaner(p, done)) {
362	>	assertEquals(0, p.getLargestPoolSize());
363	>	for (int i = 0; i < THREADS; i++)
364	>	p.execute(new CheckedRunnable() {
365	>	public void realRun() throws InterruptedException {
366	>	threadsStarted.countDown();
367	>	await(done);
368	>	assertEquals(THREADS, p.getLargestPoolSize());
369	>	}});
370	>	await(threadsStarted);
371	>	assertEquals(THREADS, p.getLargestPoolSize());
372	>	}
373	>	assertEquals(THREADS, p.getLargestPoolSize());
374	>	}
375	>
376	>	/**
377	>	* getPoolSize increases, but doesn't overestimate, when threads
378	>	* become active
379	>	*/
380	>	public void testGetPoolSize() throws InterruptedException {
381	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
382	>	final CountDownLatch threadStarted = new CountDownLatch(1);
383	>	final CountDownLatch done = new CountDownLatch(1);
384	>	try (PoolCleaner cleaner = cleaner(p, done)) {
385	>	assertEquals(0, p.getPoolSize());
386	>	p.execute(new CheckedRunnable() {
387	>	public void realRun() throws InterruptedException {
388	>	threadStarted.countDown();
389	>	assertEquals(1, p.getPoolSize());
390	>	await(done);
391	>	}});
392	>	await(threadStarted);
393	>	assertEquals(1, p.getPoolSize());
394	>	}
395	>	}
396	>
397	>	/**
398	>	* getTaskCount increases, but doesn't overestimate, when tasks
399	>	* submitted
400	>	*/
401	>	public void testGetTaskCount() throws InterruptedException {
402	>	final int TASKS = 3;
403	>	final CountDownLatch done = new CountDownLatch(1);
404	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
405	>	try (PoolCleaner cleaner = cleaner(p, done)) {
406	>	final CountDownLatch threadStarted = new CountDownLatch(1);
407	>	assertEquals(0, p.getTaskCount());
408	>	assertEquals(0, p.getCompletedTaskCount());
409	>	p.execute(new CheckedRunnable() {
410	>	public void realRun() throws InterruptedException {
411	>	threadStarted.countDown();
412	>	await(done);
413	>	}});
414	>	await(threadStarted);
415	>	assertEquals(1, p.getTaskCount());
416	>	assertEquals(0, p.getCompletedTaskCount());
417	>	for (int i = 0; i < TASKS; i++) {
418	>	assertEquals(1 + i, p.getTaskCount());
419	>	p.execute(new CheckedRunnable() {
420	>	public void realRun() throws InterruptedException {
421	>	threadStarted.countDown();
422	>	assertEquals(1 + TASKS, p.getTaskCount());
423	>	await(done);
424	>	}});
425	>	}
426	>	assertEquals(1 + TASKS, p.getTaskCount());
427	>	assertEquals(0, p.getCompletedTaskCount());
428		}
429	<	assertEquals(1, p2.getActiveCount());
430	<	joinPool(p2);
429	>	assertEquals(1 + TASKS, p.getTaskCount());
430	>	assertEquals(1 + TASKS, p.getCompletedTaskCount());
431		}
432
433		/**
434	<	*    getCompletedTaskCount increases, but doesn't overestimate,
308	<	*   when tasks complete
434	>	* getThreadFactory returns factory in constructor if not set
435		*/
436	<	public void testGetCompletedTaskCount() {
437	<	ScheduledThreadPoolExecutor p2 = new ScheduledThreadPoolExecutor(2);
438	<	assertEquals(0, p2.getCompletedTaskCount());
439	<	p2.execute(new SmallRunnable());
440	<	try {
441	<	Thread.sleep(MEDIUM_DELAY_MS);
316	<	} catch (Exception e){
317	<	unexpectedException();
436	>	public void testGetThreadFactory() throws InterruptedException {
437	>	final ThreadFactory threadFactory = new SimpleThreadFactory();
438	>	final ScheduledThreadPoolExecutor p =
439	>	new ScheduledThreadPoolExecutor(1, threadFactory);
440	>	try (PoolCleaner cleaner = cleaner(p)) {
441	>	assertSame(threadFactory, p.getThreadFactory());
442		}
319	–	assertEquals(1, p2.getCompletedTaskCount());
320	–	joinPool(p2);
321	–	}
322	–
323	–	/**
324	–	*  getCorePoolSize returns size given in constructor if not otherwise set
325	–	*/
326	–	public void testGetCorePoolSize() {
327	–	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
328	–	assertEquals(1, p1.getCorePoolSize());
329	–	joinPool(p1);
443		}
444
445		/**
446	<	*    getLargestPoolSize increases, but doesn't overestimate, when
334	<	*   multiple threads active
446	>	* setThreadFactory sets the thread factory returned by getThreadFactory
447		*/
448	<	public void testGetLargestPoolSize() {
449	<	ScheduledThreadPoolExecutor p2 = new ScheduledThreadPoolExecutor(2);
450	<	assertEquals(0, p2.getLargestPoolSize());
451	<	p2.execute(new SmallRunnable());
452	<	p2.execute(new SmallRunnable());
453	<	try {
342	<	Thread.sleep(SHORT_DELAY_MS);
343	<	} catch (Exception e){
344	<	unexpectedException();
448	>	public void testSetThreadFactory() throws InterruptedException {
449	>	ThreadFactory threadFactory = new SimpleThreadFactory();
450	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
451	>	try (PoolCleaner cleaner = cleaner(p)) {
452	>	p.setThreadFactory(threadFactory);
453	>	assertSame(threadFactory, p.getThreadFactory());
454		}
346	–	assertEquals(2, p2.getLargestPoolSize());
347	–	joinPool(p2);
455		}
456
457		/**
458	<	*   getPoolSize increases, but doesn't overestimate, when threads
352	<	*   become active
353	<	*/
354	<	public void testGetPoolSize() {
355	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
356	<	assertEquals(0, p1.getPoolSize());
357	<	p1.execute(new SmallRunnable());
358	<	assertEquals(1, p1.getPoolSize());
359	<	joinPool(p1);
360	<	}
361	<
362	<	/**
363	<	*    getTaskCount increases, but doesn't overestimate, when tasks
364	<	*    submitted
458	>	* setThreadFactory(null) throws NPE
459		*/
460	<	public void testGetTaskCount() {
461	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
462	<	assertEquals(0, p1.getTaskCount());
463	<	for (int i = 0; i < 5; i++)
464	<	p1.execute(new SmallRunnable());
465	<	try {
466	<	Thread.sleep(SHORT_DELAY_MS);
373	<	} catch (Exception e){
374	<	unexpectedException();
460	>	public void testSetThreadFactoryNull() throws InterruptedException {
461	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
462	>	try (PoolCleaner cleaner = cleaner(p)) {
463	>	try {
464	>	p.setThreadFactory(null);
465	>	shouldThrow();
466	>	} catch (NullPointerException success) {}
467		}
376	–	assertEquals(5, p1.getTaskCount());
377	–	joinPool(p1);
378	–	}
379	–
380	–	/**
381	–	* getThreadFactory returns factory in constructor if not set
382	–	*/
383	–	public void testGetThreadFactory() {
384	–	ThreadFactory tf = new SimpleThreadFactory();
385	–	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1, tf);
386	–	assertSame(tf, p.getThreadFactory());
387	–	joinPool(p);
388	–	}
389	–
390	–	/**
391	–	* setThreadFactory sets the thread factory returned by getThreadFactory
392	–	*/
393	–	public void testSetThreadFactory() {
394	–	ThreadFactory tf = new SimpleThreadFactory();
395	–	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
396	–	p.setThreadFactory(tf);
397	–	assertSame(tf, p.getThreadFactory());
398	–	joinPool(p);
468		}
469
470		/**
471	<	* setThreadFactory(null) throws NPE
471	>	* The default rejected execution handler is AbortPolicy.
472		*/
473	<	public void testSetThreadFactoryNull() {
474	<	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
475	<	try {
476	<	p.setThreadFactory(null);
477	<	shouldThrow();
409	<	} catch (NullPointerException success) {
410	<	} finally {
411	<	joinPool(p);
473	>	public void testDefaultRejectedExecutionHandler() {
474	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
475	>	try (PoolCleaner cleaner = cleaner(p)) {
476	>	assertTrue(p.getRejectedExecutionHandler()
477	>	instanceof ThreadPoolExecutor.AbortPolicy);
478		}
479		}
480
481		/**
482	<	*   is isShutDown is false before shutdown, true after
482	>	* isShutdown is false before shutdown, true after
483		*/
484		public void testIsShutdown() {
485	<
486	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
487	<	try {
488	<	assertFalse(p1.isShutdown());
485	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
486	>	assertFalse(p.isShutdown());
487	>	try (PoolCleaner cleaner = cleaner(p)) {
488	>	try {
489	>	p.shutdown();
490	>	assertTrue(p.isShutdown());
491	>	} catch (SecurityException ok) {}
492		}
424	–	finally {
425	–	try { p1.shutdown(); } catch (SecurityException ok) { return; }
426	–	}
427	–	assertTrue(p1.isShutdown());
493		}
494
430	–
495		/**
496	<	*   isTerminated is false before termination, true after
497	<	*/
498	<	public void testIsTerminated() {
499	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
500	<	try {
501	<	p1.execute(new SmallRunnable());
502	<	} finally {
503	<	try { p1.shutdown(); } catch (SecurityException ok) { return; }
504	<	}
505	<	try {
506	<	assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
507	<	assertTrue(p1.isTerminated());
508	<	} catch (Exception e){
509	<	unexpectedException();
496	>	* isTerminated is false before termination, true after
497	>	*/
498	>	public void testIsTerminated() throws InterruptedException {
499	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
500	>	try (PoolCleaner cleaner = cleaner(p)) {
501	>	final CountDownLatch threadStarted = new CountDownLatch(1);
502	>	final CountDownLatch done = new CountDownLatch(1);
503	>	assertFalse(p.isTerminated());
504	>	p.execute(new CheckedRunnable() {
505	>	public void realRun() throws InterruptedException {
506	>	assertFalse(p.isTerminated());
507	>	threadStarted.countDown();
508	>	await(done);
509	>	}});
510	>	await(threadStarted);
511	>	assertFalse(p.isTerminating());
512	>	done.countDown();
513	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
514	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
515	>	assertTrue(p.isTerminated());
516		}
517		}
518
519		/**
520	<	*  isTerminating is not true when running or when terminated
521	<	*/
522	<	public void testIsTerminating() {
523	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
524	<	assertFalse(p1.isTerminating());
525	<	try {
526	<	p1.execute(new SmallRunnable());
527	<	assertFalse(p1.isTerminating());
528	<	} finally {
529	<	try { p1.shutdown(); } catch (SecurityException ok) { return; }
530	<	}
531	<	try {
532	<	assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
533	<	assertTrue(p1.isTerminated());
534	<	assertFalse(p1.isTerminating());
535	<	} catch (Exception e){
536	<	unexpectedException();
520	>	* isTerminating is not true when running or when terminated
521	>	*/
522	>	public void testIsTerminating() throws InterruptedException {
523	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
524	>	final CountDownLatch threadStarted = new CountDownLatch(1);
525	>	final CountDownLatch done = new CountDownLatch(1);
526	>	try (PoolCleaner cleaner = cleaner(p)) {
527	>	assertFalse(p.isTerminating());
528	>	p.execute(new CheckedRunnable() {
529	>	public void realRun() throws InterruptedException {
530	>	assertFalse(p.isTerminating());
531	>	threadStarted.countDown();
532	>	await(done);
533	>	}});
534	>	await(threadStarted);
535	>	assertFalse(p.isTerminating());
536	>	done.countDown();
537	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
538	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
539	>	assertTrue(p.isTerminated());
540	>	assertFalse(p.isTerminating());
541		}
542		}
543
544		/**
545		* getQueue returns the work queue, which contains queued tasks
546		*/
547	<	public void testGetQueue() {
548	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
549	<	ScheduledFuture[] tasks = new ScheduledFuture[5];
550	<	for (int i = 0; i < 5; i++){
551	<	tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), 1, TimeUnit.MILLISECONDS);
552	<	}
553	<	try {
554	<	Thread.sleep(SHORT_DELAY_MS);
555	<	BlockingQueue<Runnable> q = p1.getQueue();
556	<	assertTrue(q.contains(tasks[4]));
547	>	public void testGetQueue() throws InterruptedException {
548	>	final CountDownLatch done = new CountDownLatch(1);
549	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
550	>	try (PoolCleaner cleaner = cleaner(p, done)) {
551	>	final CountDownLatch threadStarted = new CountDownLatch(1);
552	>	@SuppressWarnings("unchecked")
553	>	ScheduledFuture<?>[] tasks = (ScheduledFuture<?>[])new ScheduledFuture[5];
554	>	for (int i = 0; i < tasks.length; i++) {
555	>	Runnable r = new CheckedRunnable() {
556	>	public void realRun() throws InterruptedException {
557	>	threadStarted.countDown();
558	>	await(done);
559	>	}};
560	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
561	>	}
562	>	await(threadStarted);
563	>	BlockingQueue<Runnable> q = p.getQueue();
564	>	assertTrue(q.contains(tasks[tasks.length - 1]));
565		assertFalse(q.contains(tasks[0]));
484	–	} catch (Exception e) {
485	–	unexpectedException();
486	–	} finally {
487	–	joinPool(p1);
566		}
567		}
568
569		/**
570		* remove(task) removes queued task, and fails to remove active task
571		*/
572	<	public void testRemove() {
573	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
574	<	ScheduledFuture[] tasks = new ScheduledFuture[5];
575	<	for (int i = 0; i < 5; i++){
576	<	tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), 1, TimeUnit.MILLISECONDS);
577	<	}
578	<	try {
579	<	Thread.sleep(SHORT_DELAY_MS);
580	<	BlockingQueue<Runnable> q = p1.getQueue();
581	<	assertFalse(p1.remove((Runnable)tasks[0]));
572	>	public void testRemove() throws InterruptedException {
573	>	final CountDownLatch done = new CountDownLatch(1);
574	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
575	>	try (PoolCleaner cleaner = cleaner(p, done)) {
576	>	@SuppressWarnings("unchecked")
577	>	ScheduledFuture<?>[] tasks = (ScheduledFuture<?>[])new ScheduledFuture[5];
578	>	final CountDownLatch threadStarted = new CountDownLatch(1);
579	>	for (int i = 0; i < tasks.length; i++) {
580	>	Runnable r = new CheckedRunnable() {
581	>	public void realRun() throws InterruptedException {
582	>	threadStarted.countDown();
583	>	await(done);
584	>	}};
585	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
586	>	}
587	>	await(threadStarted);
588	>	BlockingQueue<Runnable> q = p.getQueue();
589	>	assertFalse(p.remove((Runnable)tasks[0]));
590		assertTrue(q.contains((Runnable)tasks[4]));
591		assertTrue(q.contains((Runnable)tasks[3]));
592	<	assertTrue(p1.remove((Runnable)tasks[4]));
593	<	assertFalse(p1.remove((Runnable)tasks[4]));
592	>	assertTrue(p.remove((Runnable)tasks[4]));
593	>	assertFalse(p.remove((Runnable)tasks[4]));
594		assertFalse(q.contains((Runnable)tasks[4]));
595		assertTrue(q.contains((Runnable)tasks[3]));
596	<	assertTrue(p1.remove((Runnable)tasks[3]));
596	>	assertTrue(p.remove((Runnable)tasks[3]));
597		assertFalse(q.contains((Runnable)tasks[3]));
512	–	} catch (Exception e) {
513	–	unexpectedException();
514	–	} finally {
515	–	joinPool(p1);
598		}
599		}
600
601		/**
602	<	*  purge removes cancelled tasks from the queue
602	>	* purge eventually removes cancelled tasks from the queue
603		*/
604	<	public void testPurge() {
605	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
606	<	ScheduledFuture[] tasks = new ScheduledFuture[5];
607	<	for (int i = 0; i < 5; i++){
608	<	tasks[i] = p1.schedule(new SmallPossiblyInterruptedRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
609	<	}
610	<	try {
611	<	int max = 5;
604	>	public void testPurge() throws InterruptedException {
605	>	@SuppressWarnings("unchecked")
606	>	ScheduledFuture<?>[] tasks = (ScheduledFuture<?>[])new ScheduledFuture[5];
607	>	final Runnable releaser = new Runnable() { public void run() {
608	>	for (ScheduledFuture<?> task : tasks)
609	>	if (task != null) task.cancel(true); }};
610	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
611	>	try (PoolCleaner cleaner = cleaner(p, releaser)) {
612	>	for (int i = 0; i < tasks.length; i++)
613	>	tasks[i] = p.schedule(possiblyInterruptedRunnable(SMALL_DELAY_MS),
614	>	LONG_DELAY_MS, MILLISECONDS);
615	>	int max = tasks.length;
616		if (tasks[4].cancel(true)) --max;
617		if (tasks[3].cancel(true)) --max;
618		// There must eventually be an interference-free point at
619		// which purge will not fail. (At worst, when queue is empty.)
620	<	int k;
621	<	for (k = 0; k < SMALL_DELAY_MS; ++k) {
622	<	p1.purge();
623	<	long count = p1.getTaskCount();
624	<	if (count >= 0 && count <= max)
625	<	break;
626	<	Thread.sleep(1);
627	<	}
542	<	assertTrue(k < SMALL_DELAY_MS);
543	<	} catch (Exception e) {
544	<	unexpectedException();
545	<	} finally {
546	<	joinPool(p1);
620	>	long startTime = System.nanoTime();
621	>	do {
622	>	p.purge();
623	>	long count = p.getTaskCount();
624	>	if (count == max)
625	>	return;
626	>	} while (millisElapsedSince(startTime) < LONG_DELAY_MS);
627	>	fail("Purge failed to remove cancelled tasks");
628		}
629		}
630
631		/**
632	<	*  shutDownNow returns a list containing tasks that were not run
633	<	*/
634	<	public void testShutDownNow() {
635	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
636	<	for (int i = 0; i < 5; i++)
637	<	p1.schedule(new SmallPossiblyInterruptedRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
638	<	List l;
632	>	* shutdownNow returns a list containing tasks that were not run,
633	>	* and those tasks are drained from the queue
634	>	*/
635	>	public void testShutdownNow() throws InterruptedException {
636	>	final int poolSize = 2;
637	>	final int count = 5;
638	>	final AtomicInteger ran = new AtomicInteger(0);
639	>	final ScheduledThreadPoolExecutor p =
640	>	new ScheduledThreadPoolExecutor(poolSize);
641	>	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
642	>	Runnable waiter = new CheckedRunnable() { public void realRun() {
643	>	threadsStarted.countDown();
644	>	try {
645	>	MILLISECONDS.sleep(LONGER_DELAY_MS);
646	>	} catch (InterruptedException success) {}
647	>	ran.getAndIncrement();
648	>	}};
649	>	for (int i = 0; i < count; i++)
650	>	p.execute(waiter);
651	>	await(threadsStarted);
652	>	assertEquals(poolSize, p.getActiveCount());
653	>	assertEquals(0, p.getCompletedTaskCount());
654	>	final List<Runnable> queuedTasks;
655		try {
656	<	l = p1.shutdownNow();
656	>	queuedTasks = p.shutdownNow();
657		} catch (SecurityException ok) {
658	<	return;
658	>	return; // Allowed in case test doesn't have privs
659		}
660	<	assertTrue(p1.isShutdown());
661	<	assertTrue(l.size() > 0 && l.size() <= 5);
662	<	joinPool(p1);
660	>	assertTrue(p.isShutdown());
661	>	assertTrue(p.getQueue().isEmpty());
662	>	assertEquals(count - poolSize, queuedTasks.size());
663	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
664	>	assertTrue(p.isTerminated());
665	>	assertEquals(poolSize, ran.get());
666	>	assertEquals(poolSize, p.getCompletedTaskCount());
667		}
668
669		/**
670	<	* In default setting, shutdown cancels periodic but not delayed
671	<	* tasks at shutdown
672	<	*/
673	<	public void testShutDown1() {
670	>	* shutdownNow returns a list containing tasks that were not run,
671	>	* and those tasks are drained from the queue
672	>	*/
673	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
674	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
675	>	List<ScheduledFuture<?>> tasks = new ArrayList<>();
676	>	for (int i = 0; i < 3; i++) {
677	>	Runnable r = new NoOpRunnable();
678	>	tasks.add(p.schedule(r, 9, SECONDS));
679	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
680	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
681	>	}
682	>	if (testImplementationDetails)
683	>	assertEquals(new HashSet<Object>(tasks), new HashSet<Object>(p.getQueue()));
684	>	final List<Runnable> queuedTasks;
685		try {
686	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
687	<	assertTrue(p1.getExecuteExistingDelayedTasksAfterShutdownPolicy());
688	<	assertFalse(p1.getContinueExistingPeriodicTasksAfterShutdownPolicy());
577	<
578	<	ScheduledFuture[] tasks = new ScheduledFuture[5];
579	<	for (int i = 0; i < 5; i++)
580	<	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
581	<	try { p1.shutdown(); } catch (SecurityException ok) { return; }
582	<	BlockingQueue q = p1.getQueue();
583	<	for (Iterator it = q.iterator(); it.hasNext();) {
584	<	ScheduledFuture t = (ScheduledFuture)it.next();
585	<	assertFalse(t.isCancelled());
586	<	}
587	<	assertTrue(p1.isShutdown());
588	<	Thread.sleep(SMALL_DELAY_MS);
589	<	for (int i = 0; i < 5; ++i) {
590	<	assertTrue(tasks[i].isDone());
591	<	assertFalse(tasks[i].isCancelled());
592	<	}
593	<
686	>	queuedTasks = p.shutdownNow();
687	>	} catch (SecurityException ok) {
688	>	return; // Allowed in case test doesn't have privs
689		}
690	<	catch (Exception ex) {
691	<	unexpectedException();
690	>	assertTrue(p.isShutdown());
691	>	assertTrue(p.getQueue().isEmpty());
692	>	if (testImplementationDetails)
693	>	assertEquals(new HashSet<Object>(tasks), new HashSet<Object>(queuedTasks));
694	>	assertEquals(tasks.size(), queuedTasks.size());
695	>	for (ScheduledFuture<?> task : tasks) {
696	>	assertFalse(task.isDone());
697	>	assertFalse(task.isCancelled());
698		}
699	+	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
700	+	assertTrue(p.isTerminated());
701		}
702
600	–
703		/**
704	<	* If setExecuteExistingDelayedTasksAfterShutdownPolicy is false,
705	<	* delayed tasks are cancelled at shutdown
706	<	*/
707	<	public void testShutDown2() {
708	<	try {
709	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
710	<	p1.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
711	<	ScheduledFuture[] tasks = new ScheduledFuture[5];
712	<	for (int i = 0; i < 5; i++)
713	<	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
714	<	try { p1.shutdown(); } catch (SecurityException ok) { return; }
715	<	assertTrue(p1.isShutdown());
716	<	BlockingQueue q = p1.getQueue();
717	<	assertTrue(q.isEmpty());
718	<	Thread.sleep(SMALL_DELAY_MS);
719	<	assertTrue(p1.isTerminated());
720	<	}
721	<	catch (Exception ex) {
722	<	unexpectedException();
704	>	* By default, periodic tasks are cancelled at shutdown.
705	>	* By default, delayed tasks keep running after shutdown.
706	>	* Check that changing the default values work:
707	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
708	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
709	>	*/
710	>	@SuppressWarnings("FutureReturnValueIgnored")
711	>	public void testShutdown_cancellation() throws Exception {
712	>	final int poolSize = 4;
713	>	final ScheduledThreadPoolExecutor p
714	>	= new ScheduledThreadPoolExecutor(poolSize);
715	>	final BlockingQueue<Runnable> q = p.getQueue();
716	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
717	>	final long delay = rnd.nextInt(2);
718	>	final int rounds = rnd.nextInt(1, 3);
719	>	final boolean effectiveDelayedPolicy;
720	>	final boolean effectivePeriodicPolicy;
721	>	final boolean effectiveRemovePolicy;
722	>
723	>	if (rnd.nextBoolean())
724	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(
725	>	effectiveDelayedPolicy = rnd.nextBoolean());
726	>	else
727	>	effectiveDelayedPolicy = true;
728	>	assertEquals(effectiveDelayedPolicy,
729	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
730	>
731	>	if (rnd.nextBoolean())
732	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(
733	>	effectivePeriodicPolicy = rnd.nextBoolean());
734	>	else
735	>	effectivePeriodicPolicy = false;
736	>	assertEquals(effectivePeriodicPolicy,
737	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
738	>
739	>	if (rnd.nextBoolean())
740	>	p.setRemoveOnCancelPolicy(
741	>	effectiveRemovePolicy = rnd.nextBoolean());
742	>	else
743	>	effectiveRemovePolicy = false;
744	>	assertEquals(effectiveRemovePolicy,
745	>	p.getRemoveOnCancelPolicy());
746	>
747	>	final boolean periodicTasksContinue = effectivePeriodicPolicy && rnd.nextBoolean();
748	>
749	>	// Strategy: Wedge the pool with one wave of "blocker" tasks,
750	>	// then add a second wave that waits in the queue until unblocked.
751	>	final AtomicInteger ran = new AtomicInteger(0);
752	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
753	>	final CountDownLatch unblock = new CountDownLatch(1);
754	>	final RuntimeException exception = new RuntimeException();
755	>
756	>	class Task implements Runnable {
757	>	public void run() {
758	>	try {
759	>	ran.getAndIncrement();
760	>	poolBlocked.countDown();
761	>	await(unblock);
762	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
763	>	}
764		}
622	–	}
623	–
765
766	<	/**
767	<	* If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false,
768	<	* periodic tasks are not cancelled at shutdown
769	<	*/
770	<	public void testShutDown3() {
771	<	try {
772	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
773	<	p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
774	<	ScheduledFuture task =
634	<	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
635	<	try { p1.shutdown(); } catch (SecurityException ok) { return; }
636	<	assertTrue(p1.isShutdown());
637	<	BlockingQueue q = p1.getQueue();
638	<	assertTrue(q.isEmpty());
639	<	Thread.sleep(SHORT_DELAY_MS);
640	<	assertTrue(p1.isTerminated());
641	<	}
642	<	catch (Exception ex) {
643	<	unexpectedException();
766	>	class PeriodicTask extends Task {
767	>	PeriodicTask(int rounds) { this.rounds = rounds; }
768	>	int rounds;
769	>	public void run() {
770	>	if (--rounds == 0) super.run();
771	>	// throw exception to surely terminate this periodic task,
772	>	// but in a separate execution and in a detectable way.
773	>	if (rounds == -1) throw exception;
774	>	}
775		}
645	–	}
776
777	<	/**
778	<	* if setContinueExistingPeriodicTasksAfterShutdownPolicy is true,
779	<	* periodic tasks are cancelled at shutdown
780	<	*/
781	<	public void testShutDown4() {
782	<	ScheduledThreadPoolExecutor p1 = new ScheduledThreadPoolExecutor(1);
783	<	try {
784	<	p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
785	<	ScheduledFuture task =
786	<	p1.scheduleAtFixedRate(new NoOpRunnable(), 1, 1, TimeUnit.MILLISECONDS);
787	<	assertFalse(task.isCancelled());
788	<	try { p1.shutdown(); } catch (SecurityException ok) { return; }
789	<	assertFalse(task.isCancelled());
790	<	assertFalse(p1.isTerminated());
791	<	assertTrue(p1.isShutdown());
792	<	Thread.sleep(SHORT_DELAY_MS);
793	<	assertFalse(task.isCancelled());
794	<	assertTrue(task.cancel(true));
795	<	assertTrue(task.isDone());
796	<	Thread.sleep(SHORT_DELAY_MS);
797	<	assertTrue(p1.isTerminated());
798	<	}
799	<	catch (Exception ex) {
800	<	unexpectedException();
801	<	}
802	<	finally {
803	<	joinPool(p1);
804	<	}
777	>	Runnable task = new Task();
778	>
779	>	List<Future<?>> immediates = new ArrayList<>();
780	>	List<Future<?>> delayeds   = new ArrayList<>();
781	>	List<Future<?>> periodics  = new ArrayList<>();
782	>
783	>	immediates.add(p.submit(task));
784	>	delayeds.add(p.schedule(task, delay, MILLISECONDS));
785	>	periodics.add(p.scheduleAtFixedRate(
786	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
787	>	periodics.add(p.scheduleWithFixedDelay(
788	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
789	>
790	>	await(poolBlocked);
791	>
792	>	assertEquals(poolSize, ran.get());
793	>	assertEquals(poolSize, p.getActiveCount());
794	>	assertTrue(q.isEmpty());
795	>
796	>	// Add second wave of tasks.
797	>	immediates.add(p.submit(task));
798	>	delayeds.add(p.schedule(task, effectiveDelayedPolicy ? delay : LONG_DELAY_MS, MILLISECONDS));
799	>	periodics.add(p.scheduleAtFixedRate(
800	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
801	>	periodics.add(p.scheduleWithFixedDelay(
802	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
803	>
804	>	assertEquals(poolSize, q.size());
805	>	assertEquals(poolSize, ran.get());
806	>
807	>	immediates.forEach(
808	>	f -> assertTrue(((ScheduledFuture)f).getDelay(NANOSECONDS) <= 0L));
809	>
810	>	Stream.of(immediates, delayeds, periodics).flatMap(Collection::stream)
811	>	.forEach(f -> assertFalse(f.isDone()));
812	>
813	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
814	>	assertTrue(p.isShutdown());
815	>	assertTrue(p.isTerminating());
816	>	assertFalse(p.isTerminated());
817	>
818	>	if (rnd.nextBoolean())
819	>	assertThrows(
820	>	RejectedExecutionException.class,
821	>	() -> p.submit(task),
822	>	() -> p.schedule(task, 1, SECONDS),
823	>	() -> p.scheduleAtFixedRate(
824	>	new PeriodicTask(1), 1, 1, SECONDS),
825	>	() -> p.scheduleWithFixedDelay(
826	>	new PeriodicTask(2), 1, 1, SECONDS));
827	>
828	>	assertTrue(q.contains(immediates.get(1)));
829	>	assertTrue(!effectiveDelayedPolicy
830	>	^ q.contains(delayeds.get(1)));
831	>	assertTrue(!effectivePeriodicPolicy
832	>	^ q.containsAll(periodics.subList(2, 4)));
833	>
834	>	immediates.forEach(f -> assertFalse(f.isDone()));
835	>
836	>	assertFalse(delayeds.get(0).isDone());
837	>	if (effectiveDelayedPolicy)
838	>	assertFalse(delayeds.get(1).isDone());
839	>	else
840	>	assertTrue(delayeds.get(1).isCancelled());
841	>
842	>	if (effectivePeriodicPolicy)
843	>	periodics.forEach(
844	>	f -> {
845	>	assertFalse(f.isDone());
846	>	if (!periodicTasksContinue) {
847	>	assertTrue(f.cancel(false));
848	>	assertTrue(f.isCancelled());
849	>	}
850	>	});
851	>	else {
852	>	periodics.subList(0, 2).forEach(f -> assertFalse(f.isDone()));
853	>	periodics.subList(2, 4).forEach(f -> assertTrue(f.isCancelled()));
854	>	}
855	>
856	>	unblock.countDown();    // Release all pool threads
857	>
858	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
859	>	assertFalse(p.isTerminating());
860	>	assertTrue(p.isTerminated());
861	>
862	>	assertTrue(q.isEmpty());
863	>
864	>	Stream.of(immediates, delayeds, periodics).flatMap(Collection::stream)
865	>	.forEach(f -> assertTrue(f.isDone()));
866	>
867	>	for (Future<?> f : immediates) assertNull(f.get());
868	>
869	>	assertNull(delayeds.get(0).get());
870	>	if (effectiveDelayedPolicy)
871	>	assertNull(delayeds.get(1).get());
872	>	else
873	>	assertTrue(delayeds.get(1).isCancelled());
874	>
875	>	if (periodicTasksContinue)
876	>	periodics.forEach(
877	>	f -> {
878	>	try { f.get(); }
879	>	catch (ExecutionException success) {
880	>	assertSame(exception, success.getCause());
881	>	}
882	>	catch (Throwable fail) { threadUnexpectedException(fail); }
883	>	});
884	>	else
885	>	periodics.forEach(f -> assertTrue(f.isCancelled()));
886	>
887	>	assertEquals(poolSize + 1
888	>	+ (effectiveDelayedPolicy ? 1 : 0)
889	>	+ (periodicTasksContinue ? 2 : 0),
890	>	ran.get());
891		}
892
893		/**
894		* completed submit of callable returns result
895		*/
896	<	public void testSubmitCallable() {
897	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
898	<	try {
896	>	public void testSubmitCallable() throws Exception {
897	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
898	>	try (PoolCleaner cleaner = cleaner(e)) {
899		Future<String> future = e.submit(new StringTask());
900		String result = future.get();
901		assertSame(TEST_STRING, result);
902		}
687	–	catch (ExecutionException ex) {
688	–	unexpectedException();
689	–	}
690	–	catch (InterruptedException ex) {
691	–	unexpectedException();
692	–	} finally {
693	–	joinPool(e);
694	–	}
903		}
904
905		/**
906		* completed submit of runnable returns successfully
907		*/
908	<	public void testSubmitRunnable() {
909	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
910	<	try {
908	>	public void testSubmitRunnable() throws Exception {
909	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
910	>	try (PoolCleaner cleaner = cleaner(e)) {
911		Future<?> future = e.submit(new NoOpRunnable());
912		future.get();
913		assertTrue(future.isDone());
914		}
707	–	catch (ExecutionException ex) {
708	–	unexpectedException();
709	–	}
710	–	catch (InterruptedException ex) {
711	–	unexpectedException();
712	–	} finally {
713	–	joinPool(e);
714	–	}
915		}
916
917		/**
918		* completed submit of (runnable, result) returns result
919		*/
920	<	public void testSubmitRunnable2() {
921	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
922	<	try {
920	>	public void testSubmitRunnable2() throws Exception {
921	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
922	>	try (PoolCleaner cleaner = cleaner(e)) {
923		Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
924		String result = future.get();
925		assertSame(TEST_STRING, result);
926		}
727	–	catch (ExecutionException ex) {
728	–	unexpectedException();
729	–	}
730	–	catch (InterruptedException ex) {
731	–	unexpectedException();
732	–	} finally {
733	–	joinPool(e);
734	–	}
927		}
928
929		/**
930	<	* invokeAny(null) throws NPE
930	>	* invokeAny(null) throws NullPointerException
931		*/
932	<	public void testInvokeAny1() {
933	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
934	<	try {
935	<	e.invokeAny(null);
936	<	} catch (NullPointerException success) {
937	<	} catch (Exception ex) {
938	<	unexpectedException();
747	<	} finally {
748	<	joinPool(e);
932	>	public void testInvokeAny1() throws Exception {
933	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
934	>	try (PoolCleaner cleaner = cleaner(e)) {
935	>	try {
936	>	e.invokeAny(null);
937	>	shouldThrow();
938	>	} catch (NullPointerException success) {}
939		}
940		}
941
942		/**
943	<	* invokeAny(empty collection) throws IAE
943	>	* invokeAny(empty collection) throws IllegalArgumentException
944		*/
945	<	public void testInvokeAny2() {
946	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
947	<	try {
948	<	e.invokeAny(new ArrayList<Callable<String>>());
949	<	} catch (IllegalArgumentException success) {
950	<	} catch (Exception ex) {
951	<	unexpectedException();
762	<	} finally {
763	<	joinPool(e);
945	>	public void testInvokeAny2() throws Exception {
946	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
947	>	try (PoolCleaner cleaner = cleaner(e)) {
948	>	try {
949	>	e.invokeAny(new ArrayList<Callable<String>>());
950	>	shouldThrow();
951	>	} catch (IllegalArgumentException success) {}
952		}
953		}
954
955		/**
956	<	* invokeAny(c) throws NPE if c has null elements
956	>	* invokeAny(c) throws NullPointerException if c has null elements
957		*/
958	<	public void testInvokeAny3() {
959	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
960	<	try {
961	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
962	<	l.add(new StringTask());
958	>	public void testInvokeAny3() throws Exception {
959	>	CountDownLatch latch = new CountDownLatch(1);
960	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
961	>	try (PoolCleaner cleaner = cleaner(e)) {
962	>	List<Callable<String>> l = new ArrayList<>();
963	>	l.add(latchAwaitingStringTask(latch));
964		l.add(null);
965	<	e.invokeAny(l);
966	<	} catch (NullPointerException success) {
967	<	} catch (Exception ex) {
968	<	unexpectedException();
969	<	} finally {
781	<	joinPool(e);
965	>	try {
966	>	e.invokeAny(l);
967	>	shouldThrow();
968	>	} catch (NullPointerException success) {}
969	>	latch.countDown();
970		}
971		}
972
973		/**
974		* invokeAny(c) throws ExecutionException if no task completes
975		*/
976	<	public void testInvokeAny4() {
977	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
978	<	try {
979	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
976	>	public void testInvokeAny4() throws Exception {
977	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
978	>	try (PoolCleaner cleaner = cleaner(e)) {
979	>	List<Callable<String>> l = new ArrayList<>();
980		l.add(new NPETask());
981	<	e.invokeAny(l);
982	<	} catch (ExecutionException success) {
983	<	} catch (Exception ex) {
984	<	unexpectedException();
985	<	} finally {
986	<	joinPool(e);
981	>	try {
982	>	e.invokeAny(l);
983	>	shouldThrow();
984	>	} catch (ExecutionException success) {
985	>	assertTrue(success.getCause() instanceof NullPointerException);
986	>	}
987		}
988		}
989
990		/**
991		* invokeAny(c) returns result of some task
992		*/
993	<	public void testInvokeAny5() {
994	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
995	<	try {
996	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
993	>	public void testInvokeAny5() throws Exception {
994	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
995	>	try (PoolCleaner cleaner = cleaner(e)) {
996	>	List<Callable<String>> l = new ArrayList<>();
997		l.add(new StringTask());
998		l.add(new StringTask());
999		String result = e.invokeAny(l);
1000		assertSame(TEST_STRING, result);
813	–	} catch (ExecutionException success) {
814	–	} catch (Exception ex) {
815	–	unexpectedException();
816	–	} finally {
817	–	joinPool(e);
1001		}
1002		}
1003
1004		/**
1005		* invokeAll(null) throws NPE
1006		*/
1007	<	public void testInvokeAll1() {
1008	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1009	<	try {
1010	<	e.invokeAll(null);
1011	<	} catch (NullPointerException success) {
1012	<	} catch (Exception ex) {
1013	<	unexpectedException();
831	<	} finally {
832	<	joinPool(e);
1007	>	public void testInvokeAll1() throws Exception {
1008	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1009	>	try (PoolCleaner cleaner = cleaner(e)) {
1010	>	try {
1011	>	e.invokeAll(null);
1012	>	shouldThrow();
1013	>	} catch (NullPointerException success) {}
1014		}
1015		}
1016
1017		/**
1018	<	* invokeAll(empty collection) returns empty collection
1018	>	* invokeAll(empty collection) returns empty list
1019		*/
1020	<	public void testInvokeAll2() {
1021	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1022	<	try {
1023	<	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
1020	>	public void testInvokeAll2() throws Exception {
1021	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1022	>	final Collection<Callable<String>> emptyCollection
1023	>	= Collections.emptyList();
1024	>	try (PoolCleaner cleaner = cleaner(e)) {
1025	>	List<Future<String>> r = e.invokeAll(emptyCollection);
1026		assertTrue(r.isEmpty());
844	–	} catch (Exception ex) {
845	–	unexpectedException();
846	–	} finally {
847	–	joinPool(e);
1027		}
1028		}
1029
1030		/**
1031		* invokeAll(c) throws NPE if c has null elements
1032		*/
1033	<	public void testInvokeAll3() {
1034	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1035	<	try {
1036	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1033	>	public void testInvokeAll3() throws Exception {
1034	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1035	>	try (PoolCleaner cleaner = cleaner(e)) {
1036	>	List<Callable<String>> l = new ArrayList<>();
1037		l.add(new StringTask());
1038		l.add(null);
1039	<	e.invokeAll(l);
1040	<	} catch (NullPointerException success) {
1041	<	} catch (Exception ex) {
1042	<	unexpectedException();
864	<	} finally {
865	<	joinPool(e);
1039	>	try {
1040	>	e.invokeAll(l);
1041	>	shouldThrow();
1042	>	} catch (NullPointerException success) {}
1043		}
1044		}
1045
1046		/**
1047		* get of invokeAll(c) throws exception on failed task
1048		*/
1049	<	public void testInvokeAll4() {
1050	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1051	<	try {
1052	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1049	>	public void testInvokeAll4() throws Exception {
1050	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1051	>	try (PoolCleaner cleaner = cleaner(e)) {
1052	>	List<Callable<String>> l = new ArrayList<>();
1053		l.add(new NPETask());
1054	<	List<Future<String>> result = e.invokeAll(l);
1055	<	assertEquals(1, result.size());
1056	<	for (Iterator<Future<String>> it = result.iterator(); it.hasNext();)
1057	<	it.next().get();
1058	<	} catch (ExecutionException success) {
1059	<	} catch (Exception ex) {
1060	<	unexpectedException();
1061	<	} finally {
885	<	joinPool(e);
1054	>	List<Future<String>> futures = e.invokeAll(l);
1055	>	assertEquals(1, futures.size());
1056	>	try {
1057	>	futures.get(0).get();
1058	>	shouldThrow();
1059	>	} catch (ExecutionException success) {
1060	>	assertTrue(success.getCause() instanceof NullPointerException);
1061	>	}
1062		}
1063		}
1064
1065		/**
1066		* invokeAll(c) returns results of all completed tasks
1067		*/
1068	<	public void testInvokeAll5() {
1069	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1070	<	try {
1071	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1068	>	public void testInvokeAll5() throws Exception {
1069	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1070	>	try (PoolCleaner cleaner = cleaner(e)) {
1071	>	List<Callable<String>> l = new ArrayList<>();
1072		l.add(new StringTask());
1073		l.add(new StringTask());
1074	<	List<Future<String>> result = e.invokeAll(l);
1075	<	assertEquals(2, result.size());
1076	<	for (Iterator<Future<String>> it = result.iterator(); it.hasNext();)
1077	<	assertSame(TEST_STRING, it.next().get());
902	<	} catch (ExecutionException success) {
903	<	} catch (Exception ex) {
904	<	unexpectedException();
905	<	} finally {
906	<	joinPool(e);
1074	>	List<Future<String>> futures = e.invokeAll(l);
1075	>	assertEquals(2, futures.size());
1076	>	for (Future<String> future : futures)
1077	>	assertSame(TEST_STRING, future.get());
1078		}
1079		}
1080
1081		/**
1082		* timed invokeAny(null) throws NPE
1083		*/
1084	<	public void testTimedInvokeAny1() {
1085	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1086	<	try {
1087	<	e.invokeAny(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
1088	<	} catch (NullPointerException success) {
1089	<	} catch (Exception ex) {
1090	<	unexpectedException();
920	<	} finally {
921	<	joinPool(e);
1084	>	public void testTimedInvokeAny1() throws Exception {
1085	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1086	>	try (PoolCleaner cleaner = cleaner(e)) {
1087	>	try {
1088	>	e.invokeAny(null, randomTimeout(), randomTimeUnit());
1089	>	shouldThrow();
1090	>	} catch (NullPointerException success) {}
1091		}
1092		}
1093
1094		/**
1095	<	* timed invokeAny(,,null) throws NPE
1095	>	* timed invokeAny(,,null) throws NullPointerException
1096		*/
1097	<	public void testTimedInvokeAnyNullTimeUnit() {
1098	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1099	<	try {
1100	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1097	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1098	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1099	>	try (PoolCleaner cleaner = cleaner(e)) {
1100	>	List<Callable<String>> l = new ArrayList<>();
1101		l.add(new StringTask());
1102	<	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1103	<	} catch (NullPointerException success) {
1104	<	} catch (Exception ex) {
1105	<	unexpectedException();
937	<	} finally {
938	<	joinPool(e);
1102	>	try {
1103	>	e.invokeAny(l, randomTimeout(), null);
1104	>	shouldThrow();
1105	>	} catch (NullPointerException success) {}
1106		}
1107		}
1108
1109		/**
1110	<	* timed invokeAny(empty collection) throws IAE
1110	>	* timed invokeAny(empty collection) throws IllegalArgumentException
1111		*/
1112	<	public void testTimedInvokeAny2() {
1113	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1114	<	try {
1115	<	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
1116	<	} catch (IllegalArgumentException success) {
1117	<	} catch (Exception ex) {
1118	<	unexpectedException();
1119	<	} finally {
1120	<	joinPool(e);
1112	>	public void testTimedInvokeAny2() throws Exception {
1113	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1114	>	final Collection<Callable<String>> emptyCollection
1115	>	= Collections.emptyList();
1116	>	try (PoolCleaner cleaner = cleaner(e)) {
1117	>	try {
1118	>	e.invokeAny(emptyCollection, randomTimeout(), randomTimeUnit());
1119	>	shouldThrow();
1120	>	} catch (IllegalArgumentException success) {}
1121		}
1122		}
1123
1124		/**
1125		* timed invokeAny(c) throws NPE if c has null elements
1126		*/
1127	<	public void testTimedInvokeAny3() {
1128	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1129	<	try {
1130	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1131	<	l.add(new StringTask());
1127	>	public void testTimedInvokeAny3() throws Exception {
1128	>	CountDownLatch latch = new CountDownLatch(1);
1129	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1130	>	try (PoolCleaner cleaner = cleaner(e)) {
1131	>	List<Callable<String>> l = new ArrayList<>();
1132	>	l.add(latchAwaitingStringTask(latch));
1133		l.add(null);
1134	<	e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
1135	<	} catch (NullPointerException success) {
1136	<	} catch (Exception ex) {
1137	<	ex.printStackTrace();
1138	<	unexpectedException();
971	<	} finally {
972	<	joinPool(e);
1134	>	try {
1135	>	e.invokeAny(l, randomTimeout(), randomTimeUnit());
1136	>	shouldThrow();
1137	>	} catch (NullPointerException success) {}
1138	>	latch.countDown();
1139		}
1140		}
1141
1142		/**
1143		* timed invokeAny(c) throws ExecutionException if no task completes
1144		*/
1145	<	public void testTimedInvokeAny4() {
1146	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1147	<	try {
1148	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1145	>	public void testTimedInvokeAny4() throws Exception {
1146	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1147	>	try (PoolCleaner cleaner = cleaner(e)) {
1148	>	long startTime = System.nanoTime();
1149	>	List<Callable<String>> l = new ArrayList<>();
1150		l.add(new NPETask());
1151	<	e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
1152	<	} catch (ExecutionException success) {
1153	<	} catch (Exception ex) {
1154	<	unexpectedException();
1155	<	} finally {
1156	<	joinPool(e);
1151	>	try {
1152	>	e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1153	>	shouldThrow();
1154	>	} catch (ExecutionException success) {
1155	>	assertTrue(success.getCause() instanceof NullPointerException);
1156	>	}
1157	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1158		}
1159		}
1160
1161		/**
1162		* timed invokeAny(c) returns result of some task
1163		*/
1164	<	public void testTimedInvokeAny5() {
1165	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1166	<	try {
1167	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1164	>	public void testTimedInvokeAny5() throws Exception {
1165	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1166	>	try (PoolCleaner cleaner = cleaner(e)) {
1167	>	long startTime = System.nanoTime();
1168	>	List<Callable<String>> l = new ArrayList<>();
1169		l.add(new StringTask());
1170		l.add(new StringTask());
1171	<	String result = e.invokeAny(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
1171	>	String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1172		assertSame(TEST_STRING, result);
1173	<	} catch (ExecutionException success) {
1005	<	} catch (Exception ex) {
1006	<	unexpectedException();
1007	<	} finally {
1008	<	joinPool(e);
1173	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1174		}
1175		}
1176
1177		/**
1178		* timed invokeAll(null) throws NPE
1179		*/
1180	<	public void testTimedInvokeAll1() {
1181	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1182	<	try {
1183	<	e.invokeAll(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
1184	<	} catch (NullPointerException success) {
1185	<	} catch (Exception ex) {
1186	<	unexpectedException();
1022	<	} finally {
1023	<	joinPool(e);
1180	>	public void testTimedInvokeAll1() throws Exception {
1181	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1182	>	try (PoolCleaner cleaner = cleaner(e)) {
1183	>	try {
1184	>	e.invokeAll(null, randomTimeout(), randomTimeUnit());
1185	>	shouldThrow();
1186	>	} catch (NullPointerException success) {}
1187		}
1188		}
1189
1190		/**
1191		* timed invokeAll(,,null) throws NPE
1192		*/
1193	<	public void testTimedInvokeAllNullTimeUnit() {
1194	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1195	<	try {
1196	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1193	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1194	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1195	>	try (PoolCleaner cleaner = cleaner(e)) {
1196	>	List<Callable<String>> l = new ArrayList<>();
1197		l.add(new StringTask());
1198	<	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1199	<	} catch (NullPointerException success) {
1200	<	} catch (Exception ex) {
1201	<	unexpectedException();
1039	<	} finally {
1040	<	joinPool(e);
1198	>	try {
1199	>	e.invokeAll(l, randomTimeout(), null);
1200	>	shouldThrow();
1201	>	} catch (NullPointerException success) {}
1202		}
1203		}
1204
1205		/**
1206	<	* timed invokeAll(empty collection) returns empty collection
1206	>	* timed invokeAll(empty collection) returns empty list
1207		*/
1208	<	public void testTimedInvokeAll2() {
1209	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1210	<	try {
1211	<	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
1208	>	public void testTimedInvokeAll2() throws Exception {
1209	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1210	>	final Collection<Callable<String>> emptyCollection
1211	>	= Collections.emptyList();
1212	>	try (PoolCleaner cleaner = cleaner(e)) {
1213	>	List<Future<String>> r =
1214	>	e.invokeAll(emptyCollection, randomTimeout(), randomTimeUnit());
1215		assertTrue(r.isEmpty());
1052	–	} catch (Exception ex) {
1053	–	unexpectedException();
1054	–	} finally {
1055	–	joinPool(e);
1216		}
1217		}
1218
1219		/**
1220		* timed invokeAll(c) throws NPE if c has null elements
1221		*/
1222	<	public void testTimedInvokeAll3() {
1223	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1224	<	try {
1225	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1222	>	public void testTimedInvokeAll3() throws Exception {
1223	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1224	>	try (PoolCleaner cleaner = cleaner(e)) {
1225	>	List<Callable<String>> l = new ArrayList<>();
1226		l.add(new StringTask());
1227		l.add(null);
1228	<	e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
1229	<	} catch (NullPointerException success) {
1230	<	} catch (Exception ex) {
1231	<	unexpectedException();
1072	<	} finally {
1073	<	joinPool(e);
1228	>	try {
1229	>	e.invokeAll(l, randomTimeout(), randomTimeUnit());
1230	>	shouldThrow();
1231	>	} catch (NullPointerException success) {}
1232		}
1233		}
1234
1235		/**
1236		* get of element of invokeAll(c) throws exception on failed task
1237		*/
1238	<	public void testTimedInvokeAll4() {
1239	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1240	<	try {
1241	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1238	>	public void testTimedInvokeAll4() throws Exception {
1239	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1240	>	try (PoolCleaner cleaner = cleaner(e)) {
1241	>	List<Callable<String>> l = new ArrayList<>();
1242		l.add(new NPETask());
1243	<	List<Future<String>> result = e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
1244	<	assertEquals(1, result.size());
1245	<	for (Iterator<Future<String>> it = result.iterator(); it.hasNext();)
1246	<	it.next().get();
1247	<	} catch (ExecutionException success) {
1248	<	} catch (Exception ex) {
1249	<	unexpectedException();
1250	<	} finally {
1251	<	joinPool(e);
1243	>	List<Future<String>> futures =
1244	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1245	>	assertEquals(1, futures.size());
1246	>	try {
1247	>	futures.get(0).get();
1248	>	shouldThrow();
1249	>	} catch (ExecutionException success) {
1250	>	assertTrue(success.getCause() instanceof NullPointerException);
1251	>	}
1252		}
1253		}
1254
1255		/**
1256		* timed invokeAll(c) returns results of all completed tasks
1257		*/
1258	<	public void testTimedInvokeAll5() {
1259	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1260	<	try {
1261	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1258	>	public void testTimedInvokeAll5() throws Exception {
1259	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1260	>	try (PoolCleaner cleaner = cleaner(e)) {
1261	>	List<Callable<String>> l = new ArrayList<>();
1262		l.add(new StringTask());
1263		l.add(new StringTask());
1264	<	List<Future<String>> result = e.invokeAll(l, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
1265	<	assertEquals(2, result.size());
1266	<	for (Iterator<Future<String>> it = result.iterator(); it.hasNext();)
1267	<	assertSame(TEST_STRING, it.next().get());
1268	<	} catch (ExecutionException success) {
1111	<	} catch (Exception ex) {
1112	<	unexpectedException();
1113	<	} finally {
1114	<	joinPool(e);
1264	>	List<Future<String>> futures =
1265	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1266	>	assertEquals(2, futures.size());
1267	>	for (Future<String> future : futures)
1268	>	assertSame(TEST_STRING, future.get());
1269		}
1270		}
1271
1272		/**
1273		* timed invokeAll(c) cancels tasks not completed by timeout
1274		*/
1275	<	public void testTimedInvokeAll6() {
1276	<	ExecutorService e = new ScheduledThreadPoolExecutor(2);
1277	<	try {
1278	<	ArrayList<Callable<String>> l = new ArrayList<Callable<String>>();
1279	<	l.add(new StringTask());
1280	<	l.add(Executors.callable(new MediumPossiblyInterruptedRunnable(), TEST_STRING));
1281	<	l.add(new StringTask());
1282	<	List<Future<String>> result = e.invokeAll(l, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
1283	<	assertEquals(3, result.size());
1284	<	Iterator<Future<String>> it = result.iterator();
1285	<	Future<String> f1 = it.next();
1286	<	Future<String> f2 = it.next();
1287	<	Future<String> f3 = it.next();
1288	<	assertTrue(f1.isDone());
1289	<	assertTrue(f2.isDone());
1290	<	assertTrue(f3.isDone());
1291	<	assertFalse(f1.isCancelled());
1292	<	assertTrue(f2.isCancelled());
1293	<	} catch (Exception ex) {
1294	<	unexpectedException();
1295	<	} finally {
1296	<	joinPool(e);
1275	>	public void testTimedInvokeAll6() throws Exception {
1276	>	for (long timeout = timeoutMillis();;) {
1277	>	final CountDownLatch done = new CountDownLatch(1);
1278	>	final Callable<String> waiter = new CheckedCallable<>() {
1279	>	public String realCall() {
1280	>	try { done.await(LONG_DELAY_MS, MILLISECONDS); }
1281	>	catch (InterruptedException ok) {}
1282	>	return "1"; }};
1283	>	final ExecutorService p = new ScheduledThreadPoolExecutor(2);
1284	>	try (PoolCleaner cleaner = cleaner(p, done)) {
1285	>	List<Callable<String>> tasks = new ArrayList<>();
1286	>	tasks.add(new StringTask("0"));
1287	>	tasks.add(waiter);
1288	>	tasks.add(new StringTask("2"));
1289	>	long startTime = System.nanoTime();
1290	>	List<Future<String>> futures =
1291	>	p.invokeAll(tasks, timeout, MILLISECONDS);
1292	>	assertEquals(tasks.size(), futures.size());
1293	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1294	>	for (Future<?> future : futures)
1295	>	assertTrue(future.isDone());
1296	>	assertTrue(futures.get(1).isCancelled());
1297	>	try {
1298	>	assertEquals("0", futures.get(0).get());
1299	>	assertEquals("2", futures.get(2).get());
1300	>	break;
1301	>	} catch (CancellationException retryWithLongerTimeout) {
1302	>	timeout *= 2;
1303	>	if (timeout >= LONG_DELAY_MS / 2)
1304	>	fail("expected exactly one task to be cancelled");
1305	>	}
1306	>	}
1307		}
1308		}
1309
1310	+	/**
1311	+	* A fixed delay task with overflowing period should not prevent a
1312	+	* one-shot task from executing.
1313	+	* https://bugs.openjdk.java.net/browse/JDK-8051859
1314	+	*/
1315	+	@SuppressWarnings("FutureReturnValueIgnored")
1316	+	public void testScheduleWithFixedDelay_overflow() throws Exception {
1317	+	final CountDownLatch delayedDone = new CountDownLatch(1);
1318	+	final CountDownLatch immediateDone = new CountDownLatch(1);
1319	+	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
1320	+	try (PoolCleaner cleaner = cleaner(p)) {
1321	+	final Runnable delayed = () -> {
1322	+	delayedDone.countDown();
1323	+	p.submit(() -> immediateDone.countDown());
1324	+	};
1325	+	p.scheduleWithFixedDelay(delayed, 0L, Long.MAX_VALUE, SECONDS);
1326	+	await(delayedDone);
1327	+	await(immediateDone);
1328	+	}
1329	+	}
1330
1331		}

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