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

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.6 by dl, Thu Sep 25 11:02:41 2003 UTC vs.
Revision 1.90 by jsr166, Tue Mar 28 23:21:24 2017 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/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.*;
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.HashSet;
15	>	import java.util.List;
16	>	import java.util.concurrent.BlockingQueue;
17	>	import java.util.concurrent.Callable;
18	>	import java.util.concurrent.CancellationException;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.ExecutionException;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.Future;
23	>	import java.util.concurrent.RejectedExecutionException;
24	>	import java.util.concurrent.ScheduledFuture;
25	>	import java.util.concurrent.ScheduledThreadPoolExecutor;
26	>	import java.util.concurrent.ThreadFactory;
27	>	import java.util.concurrent.ThreadLocalRandom;
28	>	import java.util.concurrent.ThreadPoolExecutor;
29	>	import java.util.concurrent.atomic.AtomicBoolean;
30	>	import java.util.concurrent.atomic.AtomicInteger;
31	>	import java.util.concurrent.atomic.AtomicLong;
32	>	import java.util.stream.Stream;
33	>
34	>	import junit.framework.Test;
35	>	import junit.framework.TestSuite;
36
37		public class ScheduledExecutorTest extends JSR166TestCase {
38		public static void main(String[] args) {
39	<	junit.textui.TestRunner.run (suite());
39	>	main(suite(), args);
40		}
41		public static Test suite() {
42	<	return new TestSuite(ScheduledExecutorTest.class);
18	<	}
19	<
20	<	static class MyRunnable implements Runnable {
21	<	volatile boolean done = false;
22	<	public void run() {
23	<	try {
24	<	Thread.sleep(SMALL_DELAY_MS);
25	<	done = true;
26	<	} catch(Exception e){
27	<	}
28	<	}
29	<	}
30	<
31	<	static class MyCallable implements Callable {
32	<	volatile boolean done = false;
33	<	public Object call() {
34	<	try {
35	<	Thread.sleep(SMALL_DELAY_MS);
36	<	done = true;
37	<	} catch(Exception e){
38	<	}
39	<	return Boolean.TRUE;
40	<	}
42	>	return new TestSuite(ScheduledExecutorTest.class);
43		}
44
45		/**
46		* execute successfully executes a runnable
47		*/
48	<	public void testExecute() {
49	<	try {
50	<	MyRunnable runnable =new MyRunnable();
51	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
52	<	p1.execute(runnable);
53	<	assertFalse(runnable.done);
54	<	Thread.sleep(SHORT_DELAY_MS);
55	<	p1.shutdown();
54	<	try {
55	<	Thread.sleep(MEDIUM_DELAY_MS);
56	<	} catch(InterruptedException e){
57	<	unexpectedException();
58	<	}
59	<	assertTrue(runnable.done);
60	<	p1.shutdown();
61	<	joinPool(p1);
62	<	}
63	<	catch(Exception e){
64	<	unexpectedException();
48	>	public void testExecute() throws InterruptedException {
49	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
50	>	try (PoolCleaner cleaner = cleaner(p)) {
51	>	final CountDownLatch done = new CountDownLatch(1);
52	>	final Runnable task = new CheckedRunnable() {
53	>	public void realRun() { done.countDown(); }};
54	>	p.execute(task);
55	>	await(done);
56		}
66	–
57		}
58
69	–
59		/**
60		* delayed schedule of callable successfully executes after delay
61		*/
62	<	public void testSchedule1() {
63	<	try {
64	<	MyCallable callable = new MyCallable();
65	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
66	<	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
67	<	assertFalse(callable.done);
68	<	Thread.sleep(MEDIUM_DELAY_MS);
69	<	assertTrue(callable.done);
70	<	assertEquals(Boolean.TRUE, f.get());
71	<	p1.shutdown();
72	<	joinPool(p1);
73	<	} catch(RejectedExecutionException e){}
74	<	catch(Exception e){
75	<	unexpectedException();
62	>	public void testSchedule1() throws Exception {
63	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
64	>	try (PoolCleaner cleaner = cleaner(p)) {
65	>	final long startTime = System.nanoTime();
66	>	final CountDownLatch done = new CountDownLatch(1);
67	>	Callable task = new CheckedCallable<Boolean>() {
68	>	public Boolean realCall() {
69	>	done.countDown();
70	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
71	>	return Boolean.TRUE;
72	>	}};
73	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
74	>	assertSame(Boolean.TRUE, f.get());
75	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
76	>	assertTrue(done.await(0L, MILLISECONDS));
77		}
78		}
79
80		/**
81	<	*  delayed schedule of runnable successfully executes after delay
82	<	*/
83	<	public void testSchedule3() {
84	<	try {
85	<	MyRunnable runnable = new MyRunnable();
86	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
87	<	p1.schedule(runnable, SMALL_DELAY_MS, TimeUnit.MILLISECONDS);
88	<	Thread.sleep(SHORT_DELAY_MS);
89	<	assertFalse(runnable.done);
90	<	Thread.sleep(MEDIUM_DELAY_MS);
91	<	assertTrue(runnable.done);
92	<	p1.shutdown();
93	<	joinPool(p1);
94	<	} catch(Exception e){
95	<	unexpectedException();
81	>	* delayed schedule of runnable successfully executes after delay
82	>	*/
83	>	public void testSchedule3() throws Exception {
84	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
85	>	try (PoolCleaner cleaner = cleaner(p)) {
86	>	final long startTime = System.nanoTime();
87	>	final CountDownLatch done = new CountDownLatch(1);
88	>	Runnable task = new CheckedRunnable() {
89	>	public void realRun() {
90	>	done.countDown();
91	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
92	>	}};
93	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
94	>	await(done);
95	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
96	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
97		}
98		}
99	<
99	>
100		/**
101		* scheduleAtFixedRate executes runnable after given initial delay
102		*/
103	<	public void testSchedule4() {
104	<	try {
105	<	MyRunnable runnable = new MyRunnable();
106	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
107	<	ScheduledCancellable h = p1.scheduleAtFixedRate(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
108	<	assertFalse(runnable.done);
109	<	Thread.sleep(MEDIUM_DELAY_MS);
110	<	assertTrue(runnable.done);
111	<	h.cancel(true);
112	<	p1.shutdown();
113	<	joinPool(p1);
114	<	} catch(Exception e){
115	<	unexpectedException();
103	>	public void testSchedule4() throws Exception {
104	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
105	>	try (PoolCleaner cleaner = cleaner(p)) {
106	>	final long startTime = System.nanoTime();
107	>	final CountDownLatch done = new CountDownLatch(1);
108	>	Runnable task = new CheckedRunnable() {
109	>	public void realRun() {
110	>	done.countDown();
111	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
112	>	}};
113	>	ScheduledFuture f =
114	>	p.scheduleAtFixedRate(task, timeoutMillis(),
115	>	LONG_DELAY_MS, MILLISECONDS);
116	>	await(done);
117	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
118	>	f.cancel(true);
119		}
120		}
121
122		/**
123		* scheduleWithFixedDelay executes runnable after given initial delay
124		*/
125	<	public void testSchedule5() {
126	<	try {
127	<	MyRunnable runnable = new MyRunnable();
128	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
129	<	ScheduledCancellable h = p1.scheduleWithFixedDelay(runnable, SHORT_DELAY_MS, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
130	<	assertFalse(runnable.done);
131	<	Thread.sleep(MEDIUM_DELAY_MS);
132	<	assertTrue(runnable.done);
133	<	h.cancel(true);
134	<	p1.shutdown();
135	<	joinPool(p1);
136	<	} catch(Exception e){
137	<	unexpectedException();
125	>	public void testSchedule5() throws Exception {
126	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
127	>	try (PoolCleaner cleaner = cleaner(p)) {
128	>	final long startTime = System.nanoTime();
129	>	final CountDownLatch done = new CountDownLatch(1);
130	>	Runnable task = new CheckedRunnable() {
131	>	public void realRun() {
132	>	done.countDown();
133	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
134	>	}};
135	>	ScheduledFuture f =
136	>	p.scheduleWithFixedDelay(task, timeoutMillis(),
137	>	LONG_DELAY_MS, MILLISECONDS);
138	>	await(done);
139	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
140	>	f.cancel(true);
141		}
142		}
143	<
143	>
144	>	static class RunnableCounter implements Runnable {
145	>	AtomicInteger count = new AtomicInteger(0);
146	>	public void run() { count.getAndIncrement(); }
147	>	}
148	>
149	>	/**
150	>	* scheduleAtFixedRate executes series of tasks at given rate.
151	>	* Eventually, it must hold that:
152	>	*   cycles - 1 <= elapsedMillis/delay < cycles
153	>	*/
154	>	public void testFixedRateSequence() throws InterruptedException {
155	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
156	>	try (PoolCleaner cleaner = cleaner(p)) {
157	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
158	>	final long startTime = System.nanoTime();
159	>	final int cycles = 8;
160	>	final CountDownLatch done = new CountDownLatch(cycles);
161	>	final Runnable task = new CheckedRunnable() {
162	>	public void realRun() { done.countDown(); }};
163	>	final ScheduledFuture periodicTask =
164	>	p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
165	>	final int totalDelayMillis = (cycles - 1) * delay;
166	>	await(done, totalDelayMillis + LONG_DELAY_MS);
167	>	periodicTask.cancel(true);
168	>	final long elapsedMillis = millisElapsedSince(startTime);
169	>	assertTrue(elapsedMillis >= totalDelayMillis);
170	>	if (elapsedMillis <= cycles * delay)
171	>	return;
172	>	// else retry with longer delay
173	>	}
174	>	fail("unexpected execution rate");
175	>	}
176	>	}
177	>
178		/**
179	<	*  execute (null) throws NPE
179	>	* scheduleWithFixedDelay executes series of tasks with given period.
180	>	* Eventually, it must hold that each task starts at least delay and at
181	>	* most 2 * delay after the termination of the previous task.
182	>	*/
183	>	public void testFixedDelaySequence() throws InterruptedException {
184	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
185	>	try (PoolCleaner cleaner = cleaner(p)) {
186	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
187	>	final long startTime = System.nanoTime();
188	>	final AtomicLong previous = new AtomicLong(startTime);
189	>	final AtomicBoolean tryLongerDelay = new AtomicBoolean(false);
190	>	final int cycles = 8;
191	>	final CountDownLatch done = new CountDownLatch(cycles);
192	>	final int d = delay;
193	>	final Runnable task = new CheckedRunnable() {
194	>	public void realRun() {
195	>	long now = System.nanoTime();
196	>	long elapsedMillis
197	>	= NANOSECONDS.toMillis(now - previous.get());
198	>	if (done.getCount() == cycles) { // first execution
199	>	if (elapsedMillis >= d)
200	>	tryLongerDelay.set(true);
201	>	} else {
202	>	assertTrue(elapsedMillis >= d);
203	>	if (elapsedMillis >= 2 * d)
204	>	tryLongerDelay.set(true);
205	>	}
206	>	previous.set(now);
207	>	done.countDown();
208	>	}};
209	>	final ScheduledFuture periodicTask =
210	>	p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
211	>	final int totalDelayMillis = (cycles - 1) * delay;
212	>	await(done, totalDelayMillis + cycles * LONG_DELAY_MS);
213	>	periodicTask.cancel(true);
214	>	final long elapsedMillis = millisElapsedSince(startTime);
215	>	assertTrue(elapsedMillis >= totalDelayMillis);
216	>	if (!tryLongerDelay.get())
217	>	return;
218	>	// else retry with longer delay
219	>	}
220	>	fail("unexpected execution rate");
221	>	}
222	>	}
223	>
224	>	/**
225	>	* execute(null) throws NPE
226		*/
227	<	public void testExecuteNull() {
228	<	ScheduledExecutor se = null;
229	<	try {
230	<	se = new ScheduledExecutor(1);
231	<	se.execute(null);
232	<	shouldThrow();
233	<	} catch(NullPointerException success){}
157	<	catch(Exception e){
158	<	unexpectedException();
227	>	public void testExecuteNull() throws InterruptedException {
228	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
229	>	try (PoolCleaner cleaner = cleaner(p)) {
230	>	try {
231	>	p.execute(null);
232	>	shouldThrow();
233	>	} catch (NullPointerException success) {}
234		}
160	–
161	–	joinPool(se);
235		}
236
237		/**
238	<	* schedule (null) throws NPE
238	>	* schedule(null) throws NPE
239		*/
240	<	public void testScheduleNull() {
241	<	ScheduledExecutor se = new ScheduledExecutor(1);
242	<	try {
243	<	MyCallable callable = null;
244	<	Future f = se.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
245	<	shouldThrow();
246	<	} catch(NullPointerException success){}
247	<	catch(Exception e){
175	<	unexpectedException();
240	>	public void testScheduleNull() throws InterruptedException {
241	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
242	>	try (PoolCleaner cleaner = cleaner(p)) {
243	>	try {
244	>	TrackedCallable callable = null;
245	>	Future f = p.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
246	>	shouldThrow();
247	>	} catch (NullPointerException success) {}
248		}
177	–	joinPool(se);
249		}
250	<
250	>
251		/**
252		* execute throws RejectedExecutionException if shutdown
253		*/
254	<	public void testSchedule1_RejectedExecutionException() {
255	<	ScheduledExecutor se = new ScheduledExecutor(1);
256	<	try {
257	<	se.shutdown();
258	<	se.schedule(new NoOpRunnable(),
259	<	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
260	<	shouldThrow();
261	<	} catch(RejectedExecutionException success){
254	>	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
255	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
256	>	try (PoolCleaner cleaner = cleaner(p)) {
257	>	try {
258	>	p.shutdown();
259	>	p.schedule(new NoOpRunnable(),
260	>	MEDIUM_DELAY_MS, MILLISECONDS);
261	>	shouldThrow();
262	>	} catch (RejectedExecutionException success) {
263	>	} catch (SecurityException ok) {}
264		}
192	–	joinPool(se);
193	–
265		}
266
267		/**
268		* schedule throws RejectedExecutionException if shutdown
269		*/
270	<	public void testSchedule2_RejectedExecutionException() {
271	<	ScheduledExecutor se = new ScheduledExecutor(1);
272	<	try {
273	<	se.shutdown();
274	<	se.schedule(new NoOpCallable(),
275	<	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
276	<	shouldThrow();
277	<	} catch(RejectedExecutionException success){
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		}
208	–	joinPool(se);
281		}
282
283		/**
284		* schedule callable throws RejectedExecutionException if shutdown
285		*/
286	<	public void testSchedule3_RejectedExecutionException() {
287	<	ScheduledExecutor se = new ScheduledExecutor(1);
288	<	try {
289	<	se.shutdown();
290	<	se.schedule(new NoOpCallable(),
291	<	MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
292	<	shouldThrow();
293	<	} catch(RejectedExecutionException success){
294	<	}
295	<	joinPool(se);
286	>	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
287	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
288	>	try (PoolCleaner cleaner = cleaner(p)) {
289	>	try {
290	>	p.shutdown();
291	>	p.schedule(new NoOpCallable(),
292	>	MEDIUM_DELAY_MS, MILLISECONDS);
293	>	shouldThrow();
294	>	} catch (RejectedExecutionException success) {
295	>	} catch (SecurityException ok) {}
296	>	}
297		}
298
299		/**
300	<	*  scheduleAtFixedRate throws RejectedExecutionException if shutdown
300	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
301		*/
302	<	public void testScheduleAtFixedRate1_RejectedExecutionException() {
303	<	ScheduledExecutor se = new ScheduledExecutor(1);
304	<	try {
305	<	se.shutdown();
306	<	se.scheduleAtFixedRate(new NoOpRunnable(),
307	<	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
308	<	shouldThrow();
309	<	} catch(RejectedExecutionException success){
310	<	}
311	<	joinPool(se);
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		}
314	<
314	>
315		/**
316		* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
317		*/
318	<	public void testScheduleWithFixedDelay1_RejectedExecutionException() {
319	<	ScheduledExecutor se = new ScheduledExecutor(1);
320	<	try {
321	<	se.shutdown();
322	<	se.scheduleWithFixedDelay(new NoOpRunnable(),
323	<	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS);
324	<	shouldThrow();
325	<	} catch(RejectedExecutionException success){
326	<	}
327	<	joinPool(se);
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) {}
328	>	}
329		}
330
331		/**
332	<	*  getActiveCount increases but doesn't overestimate, when a
333	<	*  thread becomes active
334	<	*/
335	<	public void testGetActiveCount() {
336	<	ScheduledExecutor p2 = new ScheduledExecutor(2);
337	<	assertEquals(0, p2.getActiveCount());
338	<	p2.execute(new SmallRunnable());
339	<	try {
340	<	Thread.sleep(SHORT_DELAY_MS);
341	<	} catch(Exception e){
342	<	unexpectedException();
343	<	}
344	<	assertEquals(1, p2.getActiveCount());
345	<	joinPool(p2);
346	<	}
347	<
348	<	/**
349	<	*    getCompletedTaskCount increases, but doesn't overestimate,
350	<	*   when tasks complete
351	<	*/
352	<	public void testGetCompletedTaskCount() {
353	<	ScheduledExecutor p2 = new ScheduledExecutor(2);
354	<	assertEquals(0, p2.getCompletedTaskCount());
355	<	p2.execute(new SmallRunnable());
356	<	try {
357	<	Thread.sleep(MEDIUM_DELAY_MS);
358	<	} catch(Exception e){
359	<	unexpectedException();
332	>	* getActiveCount increases but doesn't overestimate, when a
333	>	* thread becomes active
334	>	*/
335	>	public void testGetActiveCount() throws InterruptedException {
336	>	final CountDownLatch done = new CountDownLatch(1);
337	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
338	>	try (PoolCleaner cleaner = cleaner(p, done)) {
339	>	final CountDownLatch threadStarted = new CountDownLatch(1);
340	>	assertEquals(0, p.getActiveCount());
341	>	p.execute(new CheckedRunnable() {
342	>	public void realRun() throws InterruptedException {
343	>	threadStarted.countDown();
344	>	assertEquals(1, p.getActiveCount());
345	>	await(done);
346	>	}});
347	>	await(threadStarted);
348	>	assertEquals(1, p.getActiveCount());
349	>	}
350	>	}
351	>
352	>	/**
353	>	* getCompletedTaskCount increases, but doesn't overestimate,
354	>	* when tasks complete
355	>	*/
356	>	public void testGetCompletedTaskCount() throws InterruptedException {
357	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
358	>	try (PoolCleaner cleaner = cleaner(p)) {
359	>	final CountDownLatch threadStarted = new CountDownLatch(1);
360	>	final CountDownLatch threadProceed = new CountDownLatch(1);
361	>	final CountDownLatch threadDone = new CountDownLatch(1);
362	>	assertEquals(0, p.getCompletedTaskCount());
363	>	p.execute(new CheckedRunnable() {
364	>	public void realRun() throws InterruptedException {
365	>	threadStarted.countDown();
366	>	assertEquals(0, p.getCompletedTaskCount());
367	>	await(threadProceed);
368	>	threadDone.countDown();
369	>	}});
370	>	await(threadStarted);
371	>	assertEquals(0, p.getCompletedTaskCount());
372	>	threadProceed.countDown();
373	>	await(threadDone);
374	>	long startTime = System.nanoTime();
375	>	while (p.getCompletedTaskCount() != 1) {
376	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
377	>	fail("timed out");
378	>	Thread.yield();
379	>	}
380		}
286	–	assertEquals(1, p2.getCompletedTaskCount());
287	–	joinPool(p2);
381		}
382	<
382	>
383		/**
384	<	*  getCorePoolSize returns size given in constructor if not otherwise set
384	>	* getCorePoolSize returns size given in constructor if not otherwise set
385		*/
386	<	public void testGetCorePoolSize() {
387	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
388	<	assertEquals(1, p1.getCorePoolSize());
389	<	joinPool(p1);
386	>	public void testGetCorePoolSize() throws InterruptedException {
387	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
388	>	try (PoolCleaner cleaner = cleaner(p)) {
389	>	assertEquals(1, p.getCorePoolSize());
390	>	}
391	>	}
392	>
393	>	/**
394	>	* getLargestPoolSize increases, but doesn't overestimate, when
395	>	* multiple threads active
396	>	*/
397	>	public void testGetLargestPoolSize() throws InterruptedException {
398	>	final int THREADS = 3;
399	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
400	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
401	>	final CountDownLatch done = new CountDownLatch(1);
402	>	try (PoolCleaner cleaner = cleaner(p, done)) {
403	>	assertEquals(0, p.getLargestPoolSize());
404	>	for (int i = 0; i < THREADS; i++)
405	>	p.execute(new CheckedRunnable() {
406	>	public void realRun() throws InterruptedException {
407	>	threadsStarted.countDown();
408	>	await(done);
409	>	assertEquals(THREADS, p.getLargestPoolSize());
410	>	}});
411	>	await(threadsStarted);
412	>	assertEquals(THREADS, p.getLargestPoolSize());
413	>	}
414	>	assertEquals(THREADS, p.getLargestPoolSize());
415	>	}
416	>
417	>	/**
418	>	* getPoolSize increases, but doesn't overestimate, when threads
419	>	* become active
420	>	*/
421	>	public void testGetPoolSize() throws InterruptedException {
422	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
423	>	final CountDownLatch threadStarted = new CountDownLatch(1);
424	>	final CountDownLatch done = new CountDownLatch(1);
425	>	try (PoolCleaner cleaner = cleaner(p, done)) {
426	>	assertEquals(0, p.getPoolSize());
427	>	p.execute(new CheckedRunnable() {
428	>	public void realRun() throws InterruptedException {
429	>	threadStarted.countDown();
430	>	assertEquals(1, p.getPoolSize());
431	>	await(done);
432	>	}});
433	>	await(threadStarted);
434	>	assertEquals(1, p.getPoolSize());
435	>	}
436	>	}
437	>
438	>	/**
439	>	* getTaskCount increases, but doesn't overestimate, when tasks
440	>	* submitted
441	>	*/
442	>	public void testGetTaskCount() throws InterruptedException {
443	>	final int TASKS = 3;
444	>	final CountDownLatch done = new CountDownLatch(1);
445	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
446	>	try (PoolCleaner cleaner = cleaner(p, done)) {
447	>	final CountDownLatch threadStarted = new CountDownLatch(1);
448	>	assertEquals(0, p.getTaskCount());
449	>	assertEquals(0, p.getCompletedTaskCount());
450	>	p.execute(new CheckedRunnable() {
451	>	public void realRun() throws InterruptedException {
452	>	threadStarted.countDown();
453	>	await(done);
454	>	}});
455	>	await(threadStarted);
456	>	assertEquals(1, p.getTaskCount());
457	>	assertEquals(0, p.getCompletedTaskCount());
458	>	for (int i = 0; i < TASKS; i++) {
459	>	assertEquals(1 + i, p.getTaskCount());
460	>	p.execute(new CheckedRunnable() {
461	>	public void realRun() throws InterruptedException {
462	>	threadStarted.countDown();
463	>	assertEquals(1 + TASKS, p.getTaskCount());
464	>	await(done);
465	>	}});
466	>	}
467	>	assertEquals(1 + TASKS, p.getTaskCount());
468	>	assertEquals(0, p.getCompletedTaskCount());
469	>	}
470	>	assertEquals(1 + TASKS, p.getTaskCount());
471	>	assertEquals(1 + TASKS, p.getCompletedTaskCount());
472		}
473	<
473	>
474		/**
475	<	*    getLargestPoolSize increases, but doesn't overestimate, when
301	<	*   multiple threads active
475	>	* getThreadFactory returns factory in constructor if not set
476		*/
477	<	public void testGetLargestPoolSize() {
478	<	ScheduledExecutor p2 = new ScheduledExecutor(2);
479	<	assertEquals(0, p2.getLargestPoolSize());
480	<	p2.execute(new SmallRunnable());
481	<	p2.execute(new SmallRunnable());
482	<	try {
309	<	Thread.sleep(SHORT_DELAY_MS);
310	<	} catch(Exception e){
311	<	unexpectedException();
312	<	}
313	<	assertEquals(2, p2.getLargestPoolSize());
314	<	joinPool(p2);
315	<	}
316	<
317	<	/**
318	<	*   getPoolSize increases, but doesn't overestimate, when threads
319	<	*   become active
320	<	*/
321	<	public void testGetPoolSize() {
322	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
323	<	assertEquals(0, p1.getPoolSize());
324	<	p1.execute(new SmallRunnable());
325	<	assertEquals(1, p1.getPoolSize());
326	<	joinPool(p1);
327	<	}
328	<
329	<	/**
330	<	*    getTaskCount increases, but doesn't overestimate, when tasks
331	<	*    submitted
332	<	*/
333	<	public void testGetTaskCount() {
334	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
335	<	assertEquals(0, p1.getTaskCount());
336	<	for(int i = 0; i < 5; i++)
337	<	p1.execute(new SmallRunnable());
338	<	try {
339	<	Thread.sleep(SHORT_DELAY_MS);
340	<	} catch(Exception e){
341	<	unexpectedException();
477	>	public void testGetThreadFactory() throws InterruptedException {
478	>	final ThreadFactory threadFactory = new SimpleThreadFactory();
479	>	final ScheduledThreadPoolExecutor p =
480	>	new ScheduledThreadPoolExecutor(1, threadFactory);
481	>	try (PoolCleaner cleaner = cleaner(p)) {
482	>	assertSame(threadFactory, p.getThreadFactory());
483		}
343	–	assertEquals(5, p1.getTaskCount());
344	–	joinPool(p1);
484		}
485	<
485	>
486	>	/**
487	>	* setThreadFactory sets the thread factory returned by getThreadFactory
488	>	*/
489	>	public void testSetThreadFactory() throws InterruptedException {
490	>	ThreadFactory threadFactory = new SimpleThreadFactory();
491	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
492	>	try (PoolCleaner cleaner = cleaner(p)) {
493	>	p.setThreadFactory(threadFactory);
494	>	assertSame(threadFactory, p.getThreadFactory());
495	>	}
496	>	}
497	>
498		/**
499	<	*   is isShutDown is false before shutdown, true after
499	>	* setThreadFactory(null) throws NPE
500	>	*/
501	>	public void testSetThreadFactoryNull() throws InterruptedException {
502	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
503	>	try (PoolCleaner cleaner = cleaner(p)) {
504	>	try {
505	>	p.setThreadFactory(null);
506	>	shouldThrow();
507	>	} catch (NullPointerException success) {}
508	>	}
509	>	}
510	>
511	>	/**
512	>	* The default rejected execution handler is AbortPolicy.
513	>	*/
514	>	public void testDefaultRejectedExecutionHandler() {
515	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
516	>	try (PoolCleaner cleaner = cleaner(p)) {
517	>	assertTrue(p.getRejectedExecutionHandler()
518	>	instanceof ThreadPoolExecutor.AbortPolicy);
519	>	}
520	>	}
521	>
522	>	/**
523	>	* isShutdown is false before shutdown, true after
524		*/
525		public void testIsShutdown() {
526	<
527	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
526	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
527	>	assertFalse(p.isShutdown());
528	>	try (PoolCleaner cleaner = cleaner(p)) {
529	>	try {
530	>	p.shutdown();
531	>	assertTrue(p.isShutdown());
532	>	} catch (SecurityException ok) {}
533	>	}
534	>	}
535	>
536	>	/**
537	>	* isTerminated is false before termination, true after
538	>	*/
539	>	public void testIsTerminated() throws InterruptedException {
540	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
541	>	try (PoolCleaner cleaner = cleaner(p)) {
542	>	final CountDownLatch threadStarted = new CountDownLatch(1);
543	>	final CountDownLatch done = new CountDownLatch(1);
544	>	assertFalse(p.isTerminated());
545	>	p.execute(new CheckedRunnable() {
546	>	public void realRun() throws InterruptedException {
547	>	assertFalse(p.isTerminated());
548	>	threadStarted.countDown();
549	>	await(done);
550	>	}});
551	>	await(threadStarted);
552	>	assertFalse(p.isTerminating());
553	>	done.countDown();
554	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
555	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
556	>	assertTrue(p.isTerminated());
557	>	}
558	>	}
559	>
560	>	/**
561	>	* isTerminating is not true when running or when terminated
562	>	*/
563	>	public void testIsTerminating() throws InterruptedException {
564	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
565	>	final CountDownLatch threadStarted = new CountDownLatch(1);
566	>	final CountDownLatch done = new CountDownLatch(1);
567	>	try (PoolCleaner cleaner = cleaner(p)) {
568	>	assertFalse(p.isTerminating());
569	>	p.execute(new CheckedRunnable() {
570	>	public void realRun() throws InterruptedException {
571	>	assertFalse(p.isTerminating());
572	>	threadStarted.countDown();
573	>	await(done);
574	>	}});
575	>	await(threadStarted);
576	>	assertFalse(p.isTerminating());
577	>	done.countDown();
578	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
579	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
580	>	assertTrue(p.isTerminated());
581	>	assertFalse(p.isTerminating());
582	>	}
583	>	}
584	>
585	>	/**
586	>	* getQueue returns the work queue, which contains queued tasks
587	>	*/
588	>	public void testGetQueue() throws InterruptedException {
589	>	final CountDownLatch done = new CountDownLatch(1);
590	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
591	>	try (PoolCleaner cleaner = cleaner(p, done)) {
592	>	final CountDownLatch threadStarted = new CountDownLatch(1);
593	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
594	>	for (int i = 0; i < tasks.length; i++) {
595	>	Runnable r = new CheckedRunnable() {
596	>	public void realRun() throws InterruptedException {
597	>	threadStarted.countDown();
598	>	await(done);
599	>	}};
600	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
601	>	}
602	>	await(threadStarted);
603	>	BlockingQueue<Runnable> q = p.getQueue();
604	>	assertTrue(q.contains(tasks[tasks.length - 1]));
605	>	assertFalse(q.contains(tasks[0]));
606	>	}
607	>	}
608	>
609	>	/**
610	>	* remove(task) removes queued task, and fails to remove active task
611	>	*/
612	>	public void testRemove() throws InterruptedException {
613	>	final CountDownLatch done = new CountDownLatch(1);
614	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
615	>	try (PoolCleaner cleaner = cleaner(p, done)) {
616	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
617	>	final CountDownLatch threadStarted = new CountDownLatch(1);
618	>	for (int i = 0; i < tasks.length; i++) {
619	>	Runnable r = new CheckedRunnable() {
620	>	public void realRun() throws InterruptedException {
621	>	threadStarted.countDown();
622	>	await(done);
623	>	}};
624	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
625	>	}
626	>	await(threadStarted);
627	>	BlockingQueue<Runnable> q = p.getQueue();
628	>	assertFalse(p.remove((Runnable)tasks[0]));
629	>	assertTrue(q.contains((Runnable)tasks[4]));
630	>	assertTrue(q.contains((Runnable)tasks[3]));
631	>	assertTrue(p.remove((Runnable)tasks[4]));
632	>	assertFalse(p.remove((Runnable)tasks[4]));
633	>	assertFalse(q.contains((Runnable)tasks[4]));
634	>	assertTrue(q.contains((Runnable)tasks[3]));
635	>	assertTrue(p.remove((Runnable)tasks[3]));
636	>	assertFalse(q.contains((Runnable)tasks[3]));
637	>	}
638	>	}
639	>
640	>	/**
641	>	* purge eventually removes cancelled tasks from the queue
642	>	*/
643	>	public void testPurge() throws InterruptedException {
644	>	final ScheduledFuture[] tasks = new ScheduledFuture[5];
645	>	final Runnable releaser = new Runnable() { public void run() {
646	>	for (ScheduledFuture task : tasks)
647	>	if (task != null) task.cancel(true); }};
648	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
649	>	try (PoolCleaner cleaner = cleaner(p, releaser)) {
650	>	for (int i = 0; i < tasks.length; i++)
651	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
652	>	LONG_DELAY_MS, MILLISECONDS);
653	>	int max = tasks.length;
654	>	if (tasks[4].cancel(true)) --max;
655	>	if (tasks[3].cancel(true)) --max;
656	>	// There must eventually be an interference-free point at
657	>	// which purge will not fail. (At worst, when queue is empty.)
658	>	long startTime = System.nanoTime();
659	>	do {
660	>	p.purge();
661	>	long count = p.getTaskCount();
662	>	if (count == max)
663	>	return;
664	>	} while (millisElapsedSince(startTime) < LONG_DELAY_MS);
665	>	fail("Purge failed to remove cancelled tasks");
666	>	}
667	>	}
668	>
669	>	/**
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() throws InterruptedException {
674	>	final int poolSize = 2;
675	>	final int count = 5;
676	>	final AtomicInteger ran = new AtomicInteger(0);
677	>	final ScheduledThreadPoolExecutor p =
678	>	new ScheduledThreadPoolExecutor(poolSize);
679	>	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
680	>	Runnable waiter = new CheckedRunnable() { public void realRun() {
681	>	threadsStarted.countDown();
682	>	try {
683	>	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
684	>	} catch (InterruptedException success) {}
685	>	ran.getAndIncrement();
686	>	}};
687	>	for (int i = 0; i < count; i++)
688	>	p.execute(waiter);
689	>	await(threadsStarted);
690	>	assertEquals(poolSize, p.getActiveCount());
691	>	assertEquals(0, p.getCompletedTaskCount());
692	>	final List<Runnable> queuedTasks;
693	>	try {
694	>	queuedTasks = p.shutdownNow();
695	>	} catch (SecurityException ok) {
696	>	return; // Allowed in case test doesn't have privs
697	>	}
698	>	assertTrue(p.isShutdown());
699	>	assertTrue(p.getQueue().isEmpty());
700	>	assertEquals(count - poolSize, queuedTasks.size());
701	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
702	>	assertTrue(p.isTerminated());
703	>	assertEquals(poolSize, ran.get());
704	>	assertEquals(poolSize, p.getCompletedTaskCount());
705	>	}
706	>
707	>	/**
708	>	* shutdownNow returns a list containing tasks that were not run,
709	>	* and those tasks are drained from the queue
710	>	*/
711	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
712	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
713	>	List<ScheduledFuture> tasks = new ArrayList<>();
714	>	for (int i = 0; i < 3; i++) {
715	>	Runnable r = new NoOpRunnable();
716	>	tasks.add(p.schedule(r, 9, SECONDS));
717	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
718	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
719	>	}
720	>	if (testImplementationDetails)
721	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
722	>	final List<Runnable> queuedTasks;
723		try {
724	<	assertFalse(p1.isShutdown());
724	>	queuedTasks = p.shutdownNow();
725	>	} catch (SecurityException ok) {
726	>	return; // Allowed in case test doesn't have privs
727	>	}
728	>	assertTrue(p.isShutdown());
729	>	assertTrue(p.getQueue().isEmpty());
730	>	if (testImplementationDetails)
731	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
732	>	assertEquals(tasks.size(), queuedTasks.size());
733	>	for (ScheduledFuture task : tasks) {
734	>	assertFalse(task.isDone());
735	>	assertFalse(task.isCancelled());
736		}
737	<	finally {
738	<	p1.shutdown();
737	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
738	>	assertTrue(p.isTerminated());
739	>	}
740	>
741	>	/**
742	>	* By default, periodic tasks are cancelled at shutdown.
743	>	* By default, delayed tasks keep running after shutdown.
744	>	* Check that changing the default values work:
745	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
746	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
747	>	*/
748	>	public void testShutdown_cancellation() throws Exception {
749	>	final int poolSize = 6;
750	>	final ScheduledThreadPoolExecutor p
751	>	= new ScheduledThreadPoolExecutor(poolSize);
752	>	final BlockingQueue<Runnable> q = p.getQueue();
753	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
754	>	final boolean effectiveDelayedPolicy;
755	>	final boolean effectivePeriodicPolicy;
756	>	final boolean effectiveRemovePolicy;
757	>
758	>	if (rnd.nextBoolean())
759	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(
760	>	effectiveDelayedPolicy = rnd.nextBoolean());
761	>	else
762	>	effectiveDelayedPolicy = true;
763	>	assertEquals(effectiveDelayedPolicy,
764	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
765	>
766	>	if (rnd.nextBoolean())
767	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(
768	>	effectivePeriodicPolicy = rnd.nextBoolean());
769	>	else
770	>	effectivePeriodicPolicy = false;
771	>	assertEquals(effectivePeriodicPolicy,
772	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
773	>
774	>	if (rnd.nextBoolean())
775	>	p.setRemoveOnCancelPolicy(
776	>	effectiveRemovePolicy = rnd.nextBoolean());
777	>	else
778	>	effectiveRemovePolicy = false;
779	>	assertEquals(effectiveRemovePolicy,
780	>	p.getRemoveOnCancelPolicy());
781	>
782	>	final boolean periodicTasksContinue = effectivePeriodicPolicy && rnd.nextBoolean();
783	>
784	>	// Strategy: Wedge the pool with one wave of "blocker" tasks,
785	>	// then add a second wave that waits in the queue until unblocked.
786	>	final AtomicInteger ran = new AtomicInteger(0);
787	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
788	>	final CountDownLatch unblock = new CountDownLatch(1);
789	>	final RuntimeException exception = new RuntimeException();
790	>
791	>	class Task implements Runnable {
792	>	public void run() {
793	>	try {
794	>	ran.getAndIncrement();
795	>	poolBlocked.countDown();
796	>	await(unblock);
797	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
798	>	}
799		}
800	<	assertTrue(p1.isShutdown());
800	>
801	>	class PeriodicTask extends Task {
802	>	PeriodicTask(int rounds) { this.rounds = rounds; }
803	>	int rounds;
804	>	public void run() {
805	>	if (--rounds == 0) super.run();
806	>	// throw exception to surely terminate this periodic task,
807	>	// but in a separate execution and in a detectable way.
808	>	if (rounds == -1) throw exception;
809	>	}
810	>	}
811	>
812	>	Runnable task = new Task();
813	>
814	>	List<Future<?>> immediates = new ArrayList<>();
815	>	List<Future<?>> delayeds   = new ArrayList<>();
816	>	List<Future<?>> periodics  = new ArrayList<>();
817	>
818	>	immediates.add(p.submit(task));
819	>	delayeds.add(p.schedule(task, 1, MILLISECONDS));
820	>	for (int rounds : new int[] { 1, 2 }) {
821	>	periodics.add(p.scheduleAtFixedRate(
822	>	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
823	>	periodics.add(p.scheduleWithFixedDelay(
824	>	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
825	>	}
826	>
827	>	await(poolBlocked);
828	>
829	>	assertEquals(poolSize, ran.get());
830	>	assertTrue(q.isEmpty());
831	>
832	>	// Add second wave of tasks.
833	>	immediates.add(p.submit(task));
834	>	long delay_ms = effectiveDelayedPolicy ? 1 : LONG_DELAY_MS;
835	>	delayeds.add(p.schedule(task, delay_ms, MILLISECONDS));
836	>	for (int rounds : new int[] { 1, 2 }) {
837	>	periodics.add(p.scheduleAtFixedRate(
838	>	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
839	>	periodics.add(p.scheduleWithFixedDelay(
840	>	new PeriodicTask(rounds), 1, 1, MILLISECONDS));
841	>	}
842	>
843	>	assertEquals(poolSize, q.size());
844	>	assertEquals(poolSize, ran.get());
845	>
846	>	immediates.forEach(
847	>	f -> assertTrue(((ScheduledFuture)f).getDelay(NANOSECONDS) <= 0L));
848	>
849	>	Stream.of(immediates, delayeds, periodics).flatMap(c -> c.stream())
850	>	.forEach(f -> assertFalse(f.isDone()));
851	>
852	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
853	>	assertTrue(p.isShutdown());
854	>	assertTrue(p.isTerminating());
855	>	assertFalse(p.isTerminated());
856	>
857	>	if (rnd.nextBoolean())
858	>	assertThrows(
859	>	RejectedExecutionException.class,
860	>	() -> p.submit(task),
861	>	() -> p.schedule(task, 1, SECONDS),
862	>	() -> p.scheduleAtFixedRate(
863	>	new PeriodicTask(1), 1, 1, SECONDS),
864	>	() -> p.scheduleWithFixedDelay(
865	>	new PeriodicTask(2), 1, 1, SECONDS));
866	>
867	>	assertTrue(q.contains(immediates.get(1)));
868	>	assertTrue(!effectiveDelayedPolicy
869	>	^ q.contains(delayeds.get(1)));
870	>	assertTrue(!effectivePeriodicPolicy
871	>	^ q.containsAll(periodics.subList(4, 8)));
872	>
873	>	immediates.forEach(f -> assertFalse(f.isDone()));
874	>
875	>	assertFalse(delayeds.get(0).isDone());
876	>	if (effectiveDelayedPolicy)
877	>	assertFalse(delayeds.get(1).isDone());
878	>	else
879	>	assertTrue(delayeds.get(1).isCancelled());
880	>
881	>	if (testImplementationDetails) {
882	>	if (effectivePeriodicPolicy)
883	>	periodics.forEach(
884	>	f -> {
885	>	assertFalse(f.isDone());
886	>	if (!periodicTasksContinue)
887	>	assertTrue(f.cancel(false));
888	>	});
889	>	else {
890	>	periodics.subList(0, 4).forEach(f -> assertFalse(f.isDone()));
891	>	periodics.subList(4, 8).forEach(f -> assertTrue(f.isCancelled()));
892	>	}
893	>	}
894	>
895	>	unblock.countDown();    // Release all pool threads
896	>
897	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
898	>	assertFalse(p.isTerminating());
899	>	assertTrue(p.isTerminated());
900	>
901	>	assertTrue(q.isEmpty());
902	>
903	>	Stream.of(immediates, delayeds, periodics).flatMap(c -> c.stream())
904	>	.forEach(f -> assertTrue(f.isDone()));
905	>
906	>	for (Future<?> f : immediates) assertNull(f.get());
907	>
908	>	assertNull(delayeds.get(0).get());
909	>	if (effectiveDelayedPolicy)
910	>	assertNull(delayeds.get(1).get());
911	>	else
912	>	assertTrue(delayeds.get(1).isCancelled());
913	>
914	>	if (periodicTasksContinue)
915	>	periodics.forEach(
916	>	f -> {
917	>	try { f.get(); }
918	>	catch (ExecutionException success) {
919	>	assertSame(exception, success.getCause());
920	>	}
921	>	catch (Throwable fail) { threadUnexpectedException(fail); }
922	>	});
923	>	else
924	>	periodics.forEach(f -> assertTrue(f.isCancelled()));
925	>
926	>	assertEquals(poolSize + 1
927	>	+ (effectiveDelayedPolicy ? 1 : 0)
928	>	+ (periodicTasksContinue ? 4 : 0),
929	>	ran.get());
930		}
931
362	–
932		/**
933	<	*   isTerminated is false before termination, true after
933	>	* completed submit of callable returns result
934		*/
935	<	public void testIsTerminated() {
936	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
937	<	try {
938	<	p1.execute(new SmallRunnable());
939	<	} finally {
940	<	p1.shutdown();
935	>	public void testSubmitCallable() throws Exception {
936	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
937	>	try (PoolCleaner cleaner = cleaner(e)) {
938	>	Future<String> future = e.submit(new StringTask());
939	>	String result = future.get();
940	>	assertSame(TEST_STRING, result);
941		}
373	–	try {
374	–	assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
375	–	assertTrue(p1.isTerminated());
376	–	} catch(Exception e){
377	–	unexpectedException();
378	–	}
942		}
943
944		/**
945	<	*  isTerminating is not true when running or when terminated
945	>	* completed submit of runnable returns successfully
946		*/
947	<	public void testIsTerminating() {
948	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
949	<	assertFalse(p1.isTerminating());
950	<	try {
951	<	p1.execute(new SmallRunnable());
952	<	assertFalse(p1.isTerminating());
390	<	} finally {
391	<	p1.shutdown();
947	>	public void testSubmitRunnable() throws Exception {
948	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
949	>	try (PoolCleaner cleaner = cleaner(e)) {
950	>	Future<?> future = e.submit(new NoOpRunnable());
951	>	future.get();
952	>	assertTrue(future.isDone());
953		}
393	–	try {
394	–	assertTrue(p1.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
395	–	assertTrue(p1.isTerminated());
396	–	assertFalse(p1.isTerminating());
397	–	} catch(Exception e){
398	–	unexpectedException();
399	–	}
954		}
955
956		/**
957	<	*   purge removes cancelled tasks from the queue
957	>	* completed submit of (runnable, result) returns result
958		*/
959	<	public void testPurge() {
960	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
961	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
962	<	for(int i = 0; i < 5; i++){
963	<	tasks[i] = p1.schedule(new SmallRunnable(), 1, TimeUnit.MILLISECONDS);
959	>	public void testSubmitRunnable2() throws Exception {
960	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
961	>	try (PoolCleaner cleaner = cleaner(e)) {
962	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
963	>	String result = future.get();
964	>	assertSame(TEST_STRING, result);
965		}
411	–	int max = 5;
412	–	if (tasks[4].cancel(true)) --max;
413	–	if (tasks[3].cancel(true)) --max;
414	–	p1.purge();
415	–	long count = p1.getTaskCount();
416	–	assertTrue(count > 0 && count <= max);
417	–	joinPool(p1);
966		}
967
968		/**
969	<	*  shutDownNow returns a list containing tasks that were not run
969	>	* invokeAny(null) throws NPE
970		*/
971	<	public void testShutDownNow() {
972	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
973	<	for(int i = 0; i < 5; i++)
974	<	p1.schedule(new SmallRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
975	<	List l = p1.shutdownNow();
976	<	assertTrue(p1.isShutdown());
977	<	assertTrue(l.size() > 0 && l.size() <= 5);
978	<	joinPool(p1);
971	>	public void testInvokeAny1() throws Exception {
972	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
973	>	try (PoolCleaner cleaner = cleaner(e)) {
974	>	try {
975	>	e.invokeAny(null);
976	>	shouldThrow();
977	>	} catch (NullPointerException success) {}
978	>	}
979		}
980
981		/**
982	<	* In default setting, shutdown cancels periodic but not delayed
435	<	* tasks at shutdown
982	>	* invokeAny(empty collection) throws IAE
983		*/
984	<	public void testShutDown1() {
985	<	try {
986	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
987	<	assertTrue(p1.getExecuteExistingDelayedTasksAfterShutdownPolicy());
988	<	assertFalse(p1.getContinueExistingPeriodicTasksAfterShutdownPolicy());
984	>	public void testInvokeAny2() throws Exception {
985	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
986	>	try (PoolCleaner cleaner = cleaner(e)) {
987	>	try {
988	>	e.invokeAny(new ArrayList<Callable<String>>());
989	>	shouldThrow();
990	>	} catch (IllegalArgumentException success) {}
991	>	}
992	>	}
993	>
994	>	/**
995	>	* invokeAny(c) throws NPE if c has null elements
996	>	*/
997	>	public void testInvokeAny3() throws Exception {
998	>	CountDownLatch latch = new CountDownLatch(1);
999	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1000	>	try (PoolCleaner cleaner = cleaner(e)) {
1001	>	List<Callable<String>> l = new ArrayList<>();
1002	>	l.add(latchAwaitingStringTask(latch));
1003	>	l.add(null);
1004	>	try {
1005	>	e.invokeAny(l);
1006	>	shouldThrow();
1007	>	} catch (NullPointerException success) {}
1008	>	latch.countDown();
1009	>	}
1010	>	}
1011
1012	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1013	<	for(int i = 0; i < 5; i++)
1014	<	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
1015	<	p1.shutdown();
1016	<	BlockingQueue q = p1.getQueue();
1017	<	for (Iterator it = q.iterator(); it.hasNext();) {
1018	<	ScheduledCancellable t = (ScheduledCancellable)it.next();
1019	<	assertFalse(t.isCancelled());
1012	>	/**
1013	>	* invokeAny(c) throws ExecutionException if no task completes
1014	>	*/
1015	>	public void testInvokeAny4() throws Exception {
1016	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1017	>	try (PoolCleaner cleaner = cleaner(e)) {
1018	>	List<Callable<String>> l = new ArrayList<>();
1019	>	l.add(new NPETask());
1020	>	try {
1021	>	e.invokeAny(l);
1022	>	shouldThrow();
1023	>	} catch (ExecutionException success) {
1024	>	assertTrue(success.getCause() instanceof NullPointerException);
1025		}
1026	<	assertTrue(p1.isShutdown());
1027	<	Thread.sleep(SMALL_DELAY_MS);
1028	<	for (int i = 0; i < 5; ++i) {
1029	<	assertTrue(tasks[i].isDone());
1030	<	assertFalse(tasks[i].isCancelled());
1026	>	}
1027	>	}
1028	>
1029	>	/**
1030	>	* invokeAny(c) returns result of some task
1031	>	*/
1032	>	public void testInvokeAny5() throws Exception {
1033	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1034	>	try (PoolCleaner cleaner = cleaner(e)) {
1035	>	List<Callable<String>> l = new ArrayList<>();
1036	>	l.add(new StringTask());
1037	>	l.add(new StringTask());
1038	>	String result = e.invokeAny(l);
1039	>	assertSame(TEST_STRING, result);
1040	>	}
1041	>	}
1042	>
1043	>	/**
1044	>	* invokeAll(null) throws NPE
1045	>	*/
1046	>	public void testInvokeAll1() throws Exception {
1047	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1048	>	try (PoolCleaner cleaner = cleaner(e)) {
1049	>	try {
1050	>	e.invokeAll(null);
1051	>	shouldThrow();
1052	>	} catch (NullPointerException success) {}
1053	>	}
1054	>	}
1055	>
1056	>	/**
1057	>	* invokeAll(empty collection) returns empty collection
1058	>	*/
1059	>	public void testInvokeAll2() throws Exception {
1060	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1061	>	try (PoolCleaner cleaner = cleaner(e)) {
1062	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
1063	>	assertTrue(r.isEmpty());
1064	>	}
1065	>	}
1066	>
1067	>	/**
1068	>	* invokeAll(c) throws NPE if c has null elements
1069	>	*/
1070	>	public void testInvokeAll3() throws Exception {
1071	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1072	>	try (PoolCleaner cleaner = cleaner(e)) {
1073	>	List<Callable<String>> l = new ArrayList<>();
1074	>	l.add(new StringTask());
1075	>	l.add(null);
1076	>	try {
1077	>	e.invokeAll(l);
1078	>	shouldThrow();
1079	>	} catch (NullPointerException success) {}
1080	>	}
1081	>	}
1082	>
1083	>	/**
1084	>	* get of invokeAll(c) throws exception on failed task
1085	>	*/
1086	>	public void testInvokeAll4() throws Exception {
1087	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1088	>	try (PoolCleaner cleaner = cleaner(e)) {
1089	>	List<Callable<String>> l = new ArrayList<>();
1090	>	l.add(new NPETask());
1091	>	List<Future<String>> futures = e.invokeAll(l);
1092	>	assertEquals(1, futures.size());
1093	>	try {
1094	>	futures.get(0).get();
1095	>	shouldThrow();
1096	>	} catch (ExecutionException success) {
1097	>	assertTrue(success.getCause() instanceof NullPointerException);
1098		}
458	–
1099		}
1100	<	catch(Exception ex) {
1101	<	unexpectedException();
1100	>	}
1101	>
1102	>	/**
1103	>	* invokeAll(c) returns results of all completed tasks
1104	>	*/
1105	>	public void testInvokeAll5() throws Exception {
1106	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1107	>	try (PoolCleaner cleaner = cleaner(e)) {
1108	>	List<Callable<String>> l = new ArrayList<>();
1109	>	l.add(new StringTask());
1110	>	l.add(new StringTask());
1111	>	List<Future<String>> futures = e.invokeAll(l);
1112	>	assertEquals(2, futures.size());
1113	>	for (Future<String> future : futures)
1114	>	assertSame(TEST_STRING, future.get());
1115		}
1116		}
1117
1118	+	/**
1119	+	* timed invokeAny(null) throws NPE
1120	+	*/
1121	+	public void testTimedInvokeAny1() throws Exception {
1122	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1123	+	try (PoolCleaner cleaner = cleaner(e)) {
1124	+	try {
1125	+	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
1126	+	shouldThrow();
1127	+	} catch (NullPointerException success) {}
1128	+	}
1129	+	}
1130
1131		/**
1132	<	* If setExecuteExistingDelayedTasksAfterShutdownPolicy is false,
468	<	* delayed tasks are cancelled at shutdown
1132	>	* timed invokeAny(,,null) throws NPE
1133		*/
1134	<	public void testShutDown2() {
1135	<	try {
1136	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
1137	<	p1.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
1138	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1139	<	for(int i = 0; i < 5; i++)
1140	<	tasks[i] = p1.schedule(new NoOpRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
1141	<	p1.shutdown();
1142	<	assertTrue(p1.isShutdown());
479	<	BlockingQueue q = p1.getQueue();
480	<	assertTrue(q.isEmpty());
481	<	Thread.sleep(SMALL_DELAY_MS);
482	<	assertTrue(p1.isTerminated());
1134	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1135	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1136	>	try (PoolCleaner cleaner = cleaner(e)) {
1137	>	List<Callable<String>> l = new ArrayList<>();
1138	>	l.add(new StringTask());
1139	>	try {
1140	>	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1141	>	shouldThrow();
1142	>	} catch (NullPointerException success) {}
1143		}
1144	<	catch(Exception ex) {
1145	<	unexpectedException();
1144	>	}
1145	>
1146	>	/**
1147	>	* timed invokeAny(empty collection) throws IAE
1148	>	*/
1149	>	public void testTimedInvokeAny2() throws Exception {
1150	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1151	>	try (PoolCleaner cleaner = cleaner(e)) {
1152	>	try {
1153	>	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1154	>	shouldThrow();
1155	>	} catch (IllegalArgumentException success) {}
1156		}
1157		}
1158
1159	+	/**
1160	+	* timed invokeAny(c) throws NPE if c has null elements
1161	+	*/
1162	+	public void testTimedInvokeAny3() throws Exception {
1163	+	CountDownLatch latch = new CountDownLatch(1);
1164	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1165	+	try (PoolCleaner cleaner = cleaner(e)) {
1166	+	List<Callable<String>> l = new ArrayList<>();
1167	+	l.add(latchAwaitingStringTask(latch));
1168	+	l.add(null);
1169	+	try {
1170	+	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1171	+	shouldThrow();
1172	+	} catch (NullPointerException success) {}
1173	+	latch.countDown();
1174	+	}
1175	+	}
1176
1177		/**
1178	<	* If setContinueExistingPeriodicTasksAfterShutdownPolicy is set false,
492	<	* periodic tasks are not cancelled at shutdown
1178	>	* timed invokeAny(c) throws ExecutionException if no task completes
1179		*/
1180	<	public void testShutDown3() {
1181	<	try {
1182	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
1183	<	p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
1184	<	ScheduledCancellable task =
1185	<	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1186	<	p1.shutdown();
1187	<	assertTrue(p1.isShutdown());
1188	<	BlockingQueue q = p1.getQueue();
1189	<	assertTrue(q.isEmpty());
1190	<	Thread.sleep(SHORT_DELAY_MS);
1191	<	assertTrue(p1.isTerminated());
1180	>	public void testTimedInvokeAny4() throws Exception {
1181	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1182	>	try (PoolCleaner cleaner = cleaner(e)) {
1183	>	long startTime = System.nanoTime();
1184	>	List<Callable<String>> l = new ArrayList<>();
1185	>	l.add(new NPETask());
1186	>	try {
1187	>	e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1188	>	shouldThrow();
1189	>	} catch (ExecutionException success) {
1190	>	assertTrue(success.getCause() instanceof NullPointerException);
1191	>	}
1192	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1193		}
1194	<	catch(Exception ex) {
1195	<	unexpectedException();
1194	>	}
1195	>
1196	>	/**
1197	>	* timed invokeAny(c) returns result of some task
1198	>	*/
1199	>	public void testTimedInvokeAny5() throws Exception {
1200	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1201	>	try (PoolCleaner cleaner = cleaner(e)) {
1202	>	long startTime = System.nanoTime();
1203	>	List<Callable<String>> l = new ArrayList<>();
1204	>	l.add(new StringTask());
1205	>	l.add(new StringTask());
1206	>	String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1207	>	assertSame(TEST_STRING, result);
1208	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1209		}
1210		}
1211
1212		/**
1213	<	* if setContinueExistingPeriodicTasksAfterShutdownPolicy is true,
514	<	* periodic tasks are cancelled at shutdown
1213	>	* timed invokeAll(null) throws NPE
1214		*/
1215	<	public void testShutDown4() {
1216	<	ScheduledExecutor p1 = new ScheduledExecutor(1);
1217	<	try {
1218	<	p1.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
1219	<	ScheduledCancellable task =
1220	<	p1.scheduleAtFixedRate(new NoOpRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1221	<	assertFalse(task.isCancelled());
523	<	p1.shutdown();
524	<	assertFalse(task.isCancelled());
525	<	assertFalse(p1.isTerminated());
526	<	assertTrue(p1.isShutdown());
527	<	Thread.sleep(SHORT_DELAY_MS);
528	<	assertFalse(task.isCancelled());
529	<	task.cancel(true);
530	<	assertTrue(task.isCancelled());
531	<	Thread.sleep(SHORT_DELAY_MS);
532	<	assertTrue(p1.isTerminated());
1215	>	public void testTimedInvokeAll1() throws Exception {
1216	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1217	>	try (PoolCleaner cleaner = cleaner(e)) {
1218	>	try {
1219	>	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1220	>	shouldThrow();
1221	>	} catch (NullPointerException success) {}
1222		}
1223	<	catch(Exception ex) {
1224	<	unexpectedException();
1223	>	}
1224	>
1225	>	/**
1226	>	* timed invokeAll(,,null) throws NPE
1227	>	*/
1228	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1229	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1230	>	try (PoolCleaner cleaner = cleaner(e)) {
1231	>	List<Callable<String>> l = new ArrayList<>();
1232	>	l.add(new StringTask());
1233	>	try {
1234	>	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1235	>	shouldThrow();
1236	>	} catch (NullPointerException success) {}
1237		}
1238	<	finally {
1239	<	p1.shutdownNow();
1238	>	}
1239	>
1240	>	/**
1241	>	* timed invokeAll(empty collection) returns empty collection
1242	>	*/
1243	>	public void testTimedInvokeAll2() throws Exception {
1244	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1245	>	try (PoolCleaner cleaner = cleaner(e)) {
1246	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(),
1247	>	MEDIUM_DELAY_MS, MILLISECONDS);
1248	>	assertTrue(r.isEmpty());
1249	>	}
1250	>	}
1251	>
1252	>	/**
1253	>	* timed invokeAll(c) throws NPE if c has null elements
1254	>	*/
1255	>	public void testTimedInvokeAll3() throws Exception {
1256	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1257	>	try (PoolCleaner cleaner = cleaner(e)) {
1258	>	List<Callable<String>> l = new ArrayList<>();
1259	>	l.add(new StringTask());
1260	>	l.add(null);
1261	>	try {
1262	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1263	>	shouldThrow();
1264	>	} catch (NullPointerException success) {}
1265	>	}
1266	>	}
1267	>
1268	>	/**
1269	>	* get of element of invokeAll(c) throws exception on failed task
1270	>	*/
1271	>	public void testTimedInvokeAll4() throws Exception {
1272	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1273	>	try (PoolCleaner cleaner = cleaner(e)) {
1274	>	List<Callable<String>> l = new ArrayList<>();
1275	>	l.add(new NPETask());
1276	>	List<Future<String>> futures =
1277	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1278	>	assertEquals(1, futures.size());
1279	>	try {
1280	>	futures.get(0).get();
1281	>	shouldThrow();
1282	>	} catch (ExecutionException success) {
1283	>	assertTrue(success.getCause() instanceof NullPointerException);
1284	>	}
1285	>	}
1286	>	}
1287	>
1288	>	/**
1289	>	* timed invokeAll(c) returns results of all completed tasks
1290	>	*/
1291	>	public void testTimedInvokeAll5() throws Exception {
1292	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1293	>	try (PoolCleaner cleaner = cleaner(e)) {
1294	>	List<Callable<String>> l = new ArrayList<>();
1295	>	l.add(new StringTask());
1296	>	l.add(new StringTask());
1297	>	List<Future<String>> futures =
1298	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1299	>	assertEquals(2, futures.size());
1300	>	for (Future<String> future : futures)
1301	>	assertSame(TEST_STRING, future.get());
1302	>	}
1303	>	}
1304	>
1305	>	/**
1306	>	* timed invokeAll(c) cancels tasks not completed by timeout
1307	>	*/
1308	>	public void testTimedInvokeAll6() throws Exception {
1309	>	for (long timeout = timeoutMillis();;) {
1310	>	final CountDownLatch done = new CountDownLatch(1);
1311	>	final Callable<String> waiter = new CheckedCallable<String>() {
1312	>	public String realCall() {
1313	>	try { done.await(LONG_DELAY_MS, MILLISECONDS); }
1314	>	catch (InterruptedException ok) {}
1315	>	return "1"; }};
1316	>	final ExecutorService p = new ScheduledThreadPoolExecutor(2);
1317	>	try (PoolCleaner cleaner = cleaner(p, done)) {
1318	>	List<Callable<String>> tasks = new ArrayList<>();
1319	>	tasks.add(new StringTask("0"));
1320	>	tasks.add(waiter);
1321	>	tasks.add(new StringTask("2"));
1322	>	long startTime = System.nanoTime();
1323	>	List<Future<String>> futures =
1324	>	p.invokeAll(tasks, timeout, MILLISECONDS);
1325	>	assertEquals(tasks.size(), futures.size());
1326	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1327	>	for (Future future : futures)
1328	>	assertTrue(future.isDone());
1329	>	assertTrue(futures.get(1).isCancelled());
1330	>	try {
1331	>	assertEquals("0", futures.get(0).get());
1332	>	assertEquals("2", futures.get(2).get());
1333	>	break;
1334	>	} catch (CancellationException retryWithLongerTimeout) {
1335	>	timeout *= 2;
1336	>	if (timeout >= LONG_DELAY_MS / 2)
1337	>	fail("expected exactly one task to be cancelled");
1338	>	}
1339	>	}
1340	>	}
1341	>	}
1342	>
1343	>	/**
1344	>	* A fixed delay task with overflowing period should not prevent a
1345	>	* one-shot task from executing.
1346	>	* https://bugs.openjdk.java.net/browse/JDK-8051859
1347	>	*/
1348	>	public void testScheduleWithFixedDelay_overflow() throws Exception {
1349	>	final CountDownLatch delayedDone = new CountDownLatch(1);
1350	>	final CountDownLatch immediateDone = new CountDownLatch(1);
1351	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
1352	>	try (PoolCleaner cleaner = cleaner(p)) {
1353	>	final Runnable immediate = new Runnable() { public void run() {
1354	>	immediateDone.countDown();
1355	>	}};
1356	>	final Runnable delayed = new Runnable() { public void run() {
1357	>	delayedDone.countDown();
1358	>	p.submit(immediate);
1359	>	}};
1360	>	p.scheduleWithFixedDelay(delayed, 0L, Long.MAX_VALUE, SECONDS);
1361	>	await(delayedDone);
1362	>	await(immediateDone);
1363		}
1364		}
1365

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