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

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.2 by dl, Sun Sep 7 23:50:09 2003 UTC vs.
Revision 1.96 by jsr166, Mon Jan 8 02:04:15 2018 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.*;
12	<
13	<	public class ScheduledExecutorTest extends TestCase{
14	<
15	<	boolean flag = false;
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		}
19	–
20	–
43		public static Test suite() {
44	<	return new TestSuite(ScheduledExecutorTest.class);
44	>	return new TestSuite(ScheduledExecutorTest.class);
45		}
46
47	<	private static long SHORT_DELAY_MS = 100;
48	<	private static long MEDIUM_DELAY_MS = 1000;
49	<	private static long LONG_DELAY_MS = 10000;
50	<
51	<	static class MyRunnable implements Runnable {
52	<	volatile boolean waiting = true;
53	<	volatile boolean done = false;
54	<	public void run(){
55	<	try{
56	<	Thread.sleep(SHORT_DELAY_MS);
57	<	waiting = false;
58	<	done = true;
59	<	} catch(Exception e){
47	>	/**
48	>	* execute successfully executes a runnable
49	>	*/
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	>	}
59	>	}
60	>
61	>	/**
62	>	* delayed schedule of callable successfully executes after delay
63	>	*/
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 task = new CheckedCallable<Boolean>() {
70	>	public Boolean realCall() {
71	>	done.countDown();
72	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
73	>	return Boolean.TRUE;
74	>	}};
75	>	Future 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() 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() 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	>
124	>	/**
125	>	* scheduleWithFixedDelay executes runnable after given initial delay
126	>	*/
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	>	static class RunnableCounter implements Runnable {
147	>	AtomicInteger count = new AtomicInteger(0);
148	>	public void run() { count.getAndIncrement(); }
149	>	}
150	>
151	>	/**
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		}
178		}
179
180	<	static class MyCallable implements Callable {
181	<	volatile boolean waiting = true;
182	<	volatile boolean done = false;
183	<	public Object call(){
184	<	try{
185	<	Thread.sleep(SHORT_DELAY_MS);
186	<	waiting = false;
187	<	done = true;
188	<	}catch(Exception e){}
189	<	return Boolean.TRUE;
180	>	/**
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		}
224		}
225
226	<	public Runnable newRunnable(){
227	<	return new Runnable(){
228	<	public void run(){
229	<	try{Thread.sleep(SHORT_DELAY_MS);
230	<	} catch(Exception e){
231	<	}
232	<	}
233	<	};
226	>	/**
227	>	* Submitting null tasks throws NullPointerException
228	>	*/
229	>	public void testNullTaskSubmission() {
230	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
231	>	try (PoolCleaner cleaner = cleaner(p)) {
232	>	assertNullTaskSubmissionThrowsNullPointerException(p);
233	>	}
234		}
235
236	<	public Runnable newNoopRunnable() {
237	<	return new Runnable(){
238	<	public void run(){
239	<	}
240	<	};
236	>	/**
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	>	// ScheduledThreadPoolExecutor has an unbounded queue, so never saturated.
272	>	await(threadsStarted);
273	>
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	>	}
340		}
341
342		/**
343	<	*  Test to verify execute successfully runs the given Runnable
343	>	* getCorePoolSize returns size given in constructor if not otherwise set
344		*/
345	<	public void testExecute(){
346	<	try{
347	<	MyRunnable runnable =new MyRunnable();
348	<	ScheduledExecutor one = new ScheduledExecutor(1);
349	<	one.execute(runnable);
350	<	Thread.sleep(SHORT_DELAY_MS/2);
351	<	assertTrue(runnable.waiting);
352	<	one.shutdown();
353	<	try{
354	<	Thread.sleep(MEDIUM_DELAY_MS);
355	<	} catch(InterruptedException e){
356	<	fail("unexpected exception");
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	<	assertFalse(runnable.waiting);
427	<	assertTrue(runnable.done);
90	<	one.shutdown();
426	>	assertEquals(1 + TASKS, p.getTaskCount());
427	>	assertEquals(0, p.getCompletedTaskCount());
428		}
429	<	catch(Exception e){
430	<	fail("unexpected exception");
429	>	assertEquals(1 + TASKS, p.getTaskCount());
430	>	assertEquals(1 + TASKS, p.getCompletedTaskCount());
431	>	}
432	>
433	>	/**
434	>	* getThreadFactory returns factory in constructor if not set
435	>	*/
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		}
443		}
444
445		/**
446	<	*  Test to verify schedule successfully runs the given Callable.
99	<	*  The waiting flag shows that the Callable is not started until
100	<	*  immediately.
446	>	* setThreadFactory sets the thread factory returned by getThreadFactory
447		*/
448	<	public void testSchedule1(){
449	<	try{
450	<	MyCallable callable = new MyCallable();
451	<	ScheduledExecutor one = new ScheduledExecutor(1);
452	<	Future f = one.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
453	<	assertTrue(callable.waiting);
108	<	Thread.sleep(MEDIUM_DELAY_MS);
109	<	assertTrue(callable.done);
110	<	assertEquals(Boolean.TRUE, f.get());
111	<	one.shutdown();
112	<	}catch(RejectedExecutionException e){}
113	<	catch(Exception e){
114	<	fail("unexpected exception");
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		}
455		}
456
457		/**
458	<	*  Another version of schedule, only using Runnable instead of Callable
458	>	* setThreadFactory(null) throws NPE
459		*/
460	<	public void testSchedule3(){
461	<	try{
462	<	MyRunnable runnable = new MyRunnable();
463	<	ScheduledExecutor one = new ScheduledExecutor(1);
464	<	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
465	<	Thread.sleep(SHORT_DELAY_MS/2);
466	<	assertTrue(runnable.waiting);
128	<	Thread.sleep(MEDIUM_DELAY_MS);
129	<	assertTrue(runnable.done);
130	<	one.shutdown();
131	<	} catch(Exception e){
132	<	fail("unexpected exception");
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		}
468		}
469	<
469	>
470		/**
471	<	*  The final version of schedule, using both long, TimeUnit and Runnable
471	>	* The default rejected execution handler is AbortPolicy.
472		*/
473	<	public void testSchedule4(){
474	<	try{
475	<	MyRunnable runnable = new MyRunnable();
476	<	ScheduledExecutor one = new ScheduledExecutor(1);
477	<	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
144	<	//      Thread.sleep(505);
145	<	assertTrue(runnable.waiting);
146	<	Thread.sleep(MEDIUM_DELAY_MS);
147	<	assertTrue(runnable.done);
148	<	one.shutdown();
149	<	} catch(Exception e){
150	<	fail("unexpected exception");
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		}
153	–
154	–
155	–	// exception tests
480
481		/**
482	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
159	<	*  This occurs on an attempt to schedule a task on a shutdown executor
482	>	* isShutdown is false before shutdown, true after
483		*/
484	<	public void testSchedule1_RejectedExecutionException(){
485	<	try{
486	<	ScheduledExecutor se = new ScheduledExecutor(1);
487	<	se.shutdown();
488	<	se.schedule(new Runnable(){
489	<	public void run(){}
490	<	}, 10000, TimeUnit.MILLISECONDS);
491	<	fail("shoud throw");
492	<	}catch(RejectedExecutionException e){}
484	>	public void testIsShutdown() {
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	>	}
493		}
494
495		/**
496	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
174	<	*  This occurs on an attempt to schedule a task on a shutdown executor
496	>	* isTerminated is false before termination, true after
497		*/
498	<	public void testSchedule2_RejectedExecutionException(){
499	<	try{
500	<	ScheduledExecutor se = new ScheduledExecutor(1);
501	<	se.shutdown();
502	<	se.schedule(new Callable(){
503	<	public Object call(){
504	<	return Boolean.TRUE;
505	<	}
506	<	}, (long)100, TimeUnit.SECONDS);
507	<	fail("should throw");
508	<	}catch(RejectedExecutionException e){}
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() 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() 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	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
553	>	for (int i = 0; i < tasks.length; i++) {
554	>	Runnable r = new CheckedRunnable() {
555	>	public void realRun() throws InterruptedException {
556	>	threadStarted.countDown();
557	>	await(done);
558	>	}};
559	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
560	>	}
561	>	await(threadStarted);
562	>	BlockingQueue<Runnable> q = p.getQueue();
563	>	assertTrue(q.contains(tasks[tasks.length - 1]));
564	>	assertFalse(q.contains(tasks[0]));
565	>	}
566	>	}
567	>
568	>	/**
569	>	* remove(task) removes queued task, and fails to remove active task
570	>	*/
571	>	public void testRemove() throws InterruptedException {
572	>	final CountDownLatch done = new CountDownLatch(1);
573	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
574	>	try (PoolCleaner cleaner = cleaner(p, done)) {
575	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
576	>	final CountDownLatch threadStarted = new CountDownLatch(1);
577	>	for (int i = 0; i < tasks.length; i++) {
578	>	Runnable r = new CheckedRunnable() {
579	>	public void realRun() throws InterruptedException {
580	>	threadStarted.countDown();
581	>	await(done);
582	>	}};
583	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
584	>	}
585	>	await(threadStarted);
586	>	BlockingQueue<Runnable> q = p.getQueue();
587	>	assertFalse(p.remove((Runnable)tasks[0]));
588	>	assertTrue(q.contains((Runnable)tasks[4]));
589	>	assertTrue(q.contains((Runnable)tasks[3]));
590	>	assertTrue(p.remove((Runnable)tasks[4]));
591	>	assertFalse(p.remove((Runnable)tasks[4]));
592	>	assertFalse(q.contains((Runnable)tasks[4]));
593	>	assertTrue(q.contains((Runnable)tasks[3]));
594	>	assertTrue(p.remove((Runnable)tasks[3]));
595	>	assertFalse(q.contains((Runnable)tasks[3]));
596	>	}
597	>	}
598	>
599	>	/**
600	>	* purge eventually removes cancelled tasks from the queue
601	>	*/
602	>	public void testPurge() throws InterruptedException {
603	>	final ScheduledFuture[] tasks = new ScheduledFuture[5];
604	>	final Runnable releaser = new Runnable() { public void run() {
605	>	for (ScheduledFuture task : tasks)
606	>	if (task != null) task.cancel(true); }};
607	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
608	>	try (PoolCleaner cleaner = cleaner(p, releaser)) {
609	>	for (int i = 0; i < tasks.length; i++)
610	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
611	>	LONG_DELAY_MS, MILLISECONDS);
612	>	int max = tasks.length;
613	>	if (tasks[4].cancel(true)) --max;
614	>	if (tasks[3].cancel(true)) --max;
615	>	// There must eventually be an interference-free point at
616	>	// which purge will not fail. (At worst, when queue is empty.)
617	>	long startTime = System.nanoTime();
618	>	do {
619	>	p.purge();
620	>	long count = p.getTaskCount();
621	>	if (count == max)
622	>	return;
623	>	} while (millisElapsedSince(startTime) < LONG_DELAY_MS);
624	>	fail("Purge failed to remove cancelled tasks");
625	>	}
626	>	}
627	>
628	>	/**
629	>	* shutdownNow returns a list containing tasks that were not run,
630	>	* and those tasks are drained from the queue
631	>	*/
632	>	public void testShutdownNow() throws InterruptedException {
633	>	final int poolSize = 2;
634	>	final int count = 5;
635	>	final AtomicInteger ran = new AtomicInteger(0);
636	>	final ScheduledThreadPoolExecutor p =
637	>	new ScheduledThreadPoolExecutor(poolSize);
638	>	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
639	>	Runnable waiter = new CheckedRunnable() { public void realRun() {
640	>	threadsStarted.countDown();
641	>	try {
642	>	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
643	>	} catch (InterruptedException success) {}
644	>	ran.getAndIncrement();
645	>	}};
646	>	for (int i = 0; i < count; i++)
647	>	p.execute(waiter);
648	>	await(threadsStarted);
649	>	assertEquals(poolSize, p.getActiveCount());
650	>	assertEquals(0, p.getCompletedTaskCount());
651	>	final List<Runnable> queuedTasks;
652	>	try {
653	>	queuedTasks = p.shutdownNow();
654	>	} catch (SecurityException ok) {
655	>	return; // Allowed in case test doesn't have privs
656	>	}
657	>	assertTrue(p.isShutdown());
658	>	assertTrue(p.getQueue().isEmpty());
659	>	assertEquals(count - poolSize, queuedTasks.size());
660	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
661	>	assertTrue(p.isTerminated());
662	>	assertEquals(poolSize, ran.get());
663	>	assertEquals(poolSize, p.getCompletedTaskCount());
664	>	}
665	>
666	>	/**
667	>	* shutdownNow returns a list containing tasks that were not run,
668	>	* and those tasks are drained from the queue
669	>	*/
670	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
671	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
672	>	List<ScheduledFuture> tasks = new ArrayList<>();
673	>	for (int i = 0; i < 3; i++) {
674	>	Runnable r = new NoOpRunnable();
675	>	tasks.add(p.schedule(r, 9, SECONDS));
676	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
677	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
678	>	}
679	>	if (testImplementationDetails)
680	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
681	>	final List<Runnable> queuedTasks;
682	>	try {
683	>	queuedTasks = p.shutdownNow();
684	>	} catch (SecurityException ok) {
685	>	return; // Allowed in case test doesn't have privs
686	>	}
687	>	assertTrue(p.isShutdown());
688	>	assertTrue(p.getQueue().isEmpty());
689	>	if (testImplementationDetails)
690	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
691	>	assertEquals(tasks.size(), queuedTasks.size());
692	>	for (ScheduledFuture task : tasks) {
693	>	assertFalse(task.isDone());
694	>	assertFalse(task.isCancelled());
695	>	}
696	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
697	>	assertTrue(p.isTerminated());
698		}
699
700		/**
701	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
702	<	*  This occurs on an attempt to schedule a task on a shutdown executor
703	<	*/
704	<	public void testSchedule3_RejectedExecutionException(){
705	<	try{
706	<	ScheduledExecutor se = new ScheduledExecutor(1);
707	<	se.shutdown();
708	<	se.schedule(new Callable(){
709	<	public Object call(){
710	<	return Boolean.TRUE;
701	>	* By default, periodic tasks are cancelled at shutdown.
702	>	* By default, delayed tasks keep running after shutdown.
703	>	* Check that changing the default values work:
704	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
705	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
706	>	*/
707	>	@SuppressWarnings("FutureReturnValueIgnored")
708	>	public void testShutdown_cancellation() throws Exception {
709	>	final int poolSize = 4;
710	>	final ScheduledThreadPoolExecutor p
711	>	= new ScheduledThreadPoolExecutor(poolSize);
712	>	final BlockingQueue<Runnable> q = p.getQueue();
713	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
714	>	final long delay = rnd.nextInt(2);
715	>	final int rounds = rnd.nextInt(1, 3);
716	>	final boolean effectiveDelayedPolicy;
717	>	final boolean effectivePeriodicPolicy;
718	>	final boolean effectiveRemovePolicy;
719	>
720	>	if (rnd.nextBoolean())
721	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(
722	>	effectiveDelayedPolicy = rnd.nextBoolean());
723	>	else
724	>	effectiveDelayedPolicy = true;
725	>	assertEquals(effectiveDelayedPolicy,
726	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
727	>
728	>	if (rnd.nextBoolean())
729	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(
730	>	effectivePeriodicPolicy = rnd.nextBoolean());
731	>	else
732	>	effectivePeriodicPolicy = false;
733	>	assertEquals(effectivePeriodicPolicy,
734	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
735	>
736	>	if (rnd.nextBoolean())
737	>	p.setRemoveOnCancelPolicy(
738	>	effectiveRemovePolicy = rnd.nextBoolean());
739	>	else
740	>	effectiveRemovePolicy = false;
741	>	assertEquals(effectiveRemovePolicy,
742	>	p.getRemoveOnCancelPolicy());
743	>
744	>	final boolean periodicTasksContinue = effectivePeriodicPolicy && rnd.nextBoolean();
745	>
746	>	// Strategy: Wedge the pool with one wave of "blocker" tasks,
747	>	// then add a second wave that waits in the queue until unblocked.
748	>	final AtomicInteger ran = new AtomicInteger(0);
749	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
750	>	final CountDownLatch unblock = new CountDownLatch(1);
751	>	final RuntimeException exception = new RuntimeException();
752	>
753	>	class Task implements Runnable {
754	>	public void run() {
755	>	try {
756	>	ran.getAndIncrement();
757	>	poolBlocked.countDown();
758	>	await(unblock);
759	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
760	>	}
761	>	}
762	>
763	>	class PeriodicTask extends Task {
764	>	PeriodicTask(int rounds) { this.rounds = rounds; }
765	>	int rounds;
766	>	public void run() {
767	>	if (--rounds == 0) super.run();
768	>	// throw exception to surely terminate this periodic task,
769	>	// but in a separate execution and in a detectable way.
770	>	if (rounds == -1) throw exception;
771	>	}
772	>	}
773	>
774	>	Runnable task = new Task();
775	>
776	>	List<Future<?>> immediates = new ArrayList<>();
777	>	List<Future<?>> delayeds   = new ArrayList<>();
778	>	List<Future<?>> periodics  = new ArrayList<>();
779	>
780	>	immediates.add(p.submit(task));
781	>	delayeds.add(p.schedule(task, delay, MILLISECONDS));
782	>	periodics.add(p.scheduleAtFixedRate(
783	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
784	>	periodics.add(p.scheduleWithFixedDelay(
785	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
786	>
787	>	await(poolBlocked);
788	>
789	>	assertEquals(poolSize, ran.get());
790	>	assertEquals(poolSize, p.getActiveCount());
791	>	assertTrue(q.isEmpty());
792	>
793	>	// Add second wave of tasks.
794	>	immediates.add(p.submit(task));
795	>	delayeds.add(p.schedule(task, effectiveDelayedPolicy ? delay : LONG_DELAY_MS, MILLISECONDS));
796	>	periodics.add(p.scheduleAtFixedRate(
797	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
798	>	periodics.add(p.scheduleWithFixedDelay(
799	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
800	>
801	>	assertEquals(poolSize, q.size());
802	>	assertEquals(poolSize, ran.get());
803	>
804	>	immediates.forEach(
805	>	f -> assertTrue(((ScheduledFuture)f).getDelay(NANOSECONDS) <= 0L));
806	>
807	>	Stream.of(immediates, delayeds, periodics).flatMap(Collection::stream)
808	>	.forEach(f -> assertFalse(f.isDone()));
809	>
810	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
811	>	assertTrue(p.isShutdown());
812	>	assertTrue(p.isTerminating());
813	>	assertFalse(p.isTerminated());
814	>
815	>	if (rnd.nextBoolean())
816	>	assertThrows(
817	>	RejectedExecutionException.class,
818	>	() -> p.submit(task),
819	>	() -> p.schedule(task, 1, SECONDS),
820	>	() -> p.scheduleAtFixedRate(
821	>	new PeriodicTask(1), 1, 1, SECONDS),
822	>	() -> p.scheduleWithFixedDelay(
823	>	new PeriodicTask(2), 1, 1, SECONDS));
824	>
825	>	assertTrue(q.contains(immediates.get(1)));
826	>	assertTrue(!effectiveDelayedPolicy
827	>	^ q.contains(delayeds.get(1)));
828	>	assertTrue(!effectivePeriodicPolicy
829	>	^ q.containsAll(periodics.subList(2, 4)));
830	>
831	>	immediates.forEach(f -> assertFalse(f.isDone()));
832	>
833	>	assertFalse(delayeds.get(0).isDone());
834	>	if (effectiveDelayedPolicy)
835	>	assertFalse(delayeds.get(1).isDone());
836	>	else
837	>	assertTrue(delayeds.get(1).isCancelled());
838	>
839	>	if (effectivePeriodicPolicy)
840	>	periodics.forEach(
841	>	f -> {
842	>	assertFalse(f.isDone());
843	>	if (!periodicTasksContinue) {
844	>	assertTrue(f.cancel(false));
845	>	assertTrue(f.isCancelled());
846		}
201	–	},  10000, TimeUnit.MILLISECONDS);
202	–	fail("should throw");
203	–	}catch(RejectedExecutionException e){}
204	–	}
205	–
206	–	/**
207	–	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
208	–	*  RejectedExecutionException.
209	–	*  This occurs on an attempt to schedule a task on a shutdown executor
210	–	*/
211	–	public void testScheduleAtFixedRate1_RejectedExecutionException(){
212	–	try{
213	–	ScheduledExecutor se = new ScheduledExecutor(1);
214	–	se.shutdown();
215	–	se.scheduleAtFixedRate(new Runnable(){
216	–	public void run(){}
217	–	}, 100, 100, TimeUnit.SECONDS);
218	–	fail("should throw");
219	–	}catch(RejectedExecutionException e){}
220	–	}
221	–
222	–	/**
223	–	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
224	–	*  RejectedExecutionException.
225	–	*  This occurs on an attempt to schedule a task on a shutdown executor
226	–	*/
227	–	public void testScheduleAtFixedRate2_RejectedExecutionException(){
228	–	try{
229	–	ScheduledExecutor se = new ScheduledExecutor(1);
230	–	se.shutdown();
231	–	se.scheduleAtFixedRate(new Runnable(){
232	–	public void run(){}
233	–	},  1, 100, TimeUnit.SECONDS);
234	–	fail("should throw");
235	–	}catch(RejectedExecutionException e){}
236	–	}
237	–
238	–	/**
239	–	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
240	–	*  RejectedExecutionException.
241	–	*  This occurs on an attempt to schedule a task on a shutdown executor
242	–	*/
243	–	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
244	–	try{
245	–	ScheduledExecutor se = new ScheduledExecutor(1);
246	–	se.shutdown();
247	–	se.scheduleWithFixedDelay(new Runnable(){
248	–	public void run(){}
249	–	}, 100, 100, TimeUnit.SECONDS);
250	–	fail("should throw");
251	–	}catch(RejectedExecutionException e){}
252	–	}
253	–
254	–	/**
255	–	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
256	–	*  RejectedExecutionException.
257	–	*  This occurs on an attempt to schedule a task on a shutdown executor
258	–	*/
259	–	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
260	–	try{
261	–	ScheduledExecutor se = new ScheduledExecutor(1);
262	–	se.shutdown();
263	–	se.scheduleWithFixedDelay(new Runnable(){
264	–	public void run(){}
265	–	},  1, 100, TimeUnit.SECONDS);
266	–	fail("should throw");
267	–	}catch(RejectedExecutionException e){}
268	–	}
269	–
270	–	/**
271	–	*  Test to verify execute throws RejectedExecutionException
272	–	*  This occurs on an attempt to schedule a task on a shutdown executor
273	–	*/
274	–	public void testExecute_RejectedExecutionException(){
275	–	try{
276	–	ScheduledExecutor se = new ScheduledExecutor(1);
277	–	se.shutdown();
278	–	se.execute(new Runnable(){
279	–	public void run(){}
847		});
848	<	fail("should throw");
849	<	}catch(RejectedExecutionException e){}
848	>	else {
849	>	periodics.subList(0, 2).forEach(f -> assertFalse(f.isDone()));
850	>	periodics.subList(2, 4).forEach(f -> assertTrue(f.isCancelled()));
851	>	}
852	>
853	>	unblock.countDown();    // Release all pool threads
854	>
855	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
856	>	assertFalse(p.isTerminating());
857	>	assertTrue(p.isTerminated());
858	>
859	>	assertTrue(q.isEmpty());
860	>
861	>	Stream.of(immediates, delayeds, periodics).flatMap(Collection::stream)
862	>	.forEach(f -> assertTrue(f.isDone()));
863	>
864	>	for (Future<?> f : immediates) assertNull(f.get());
865	>
866	>	assertNull(delayeds.get(0).get());
867	>	if (effectiveDelayedPolicy)
868	>	assertNull(delayeds.get(1).get());
869	>	else
870	>	assertTrue(delayeds.get(1).isCancelled());
871	>
872	>	if (periodicTasksContinue)
873	>	periodics.forEach(
874	>	f -> {
875	>	try { f.get(); }
876	>	catch (ExecutionException success) {
877	>	assertSame(exception, success.getCause());
878	>	}
879	>	catch (Throwable fail) { threadUnexpectedException(fail); }
880	>	});
881	>	else
882	>	periodics.forEach(f -> assertTrue(f.isCancelled()));
883	>
884	>	assertEquals(poolSize + 1
885	>	+ (effectiveDelayedPolicy ? 1 : 0)
886	>	+ (periodicTasksContinue ? 2 : 0),
887	>	ran.get());
888		}
889
890	+	/**
891	+	* completed submit of callable returns result
892	+	*/
893	+	public void testSubmitCallable() throws Exception {
894	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
895	+	try (PoolCleaner cleaner = cleaner(e)) {
896	+	Future<String> future = e.submit(new StringTask());
897	+	String result = future.get();
898	+	assertSame(TEST_STRING, result);
899	+	}
900	+	}
901
902	+	/**
903	+	* completed submit of runnable returns successfully
904	+	*/
905	+	public void testSubmitRunnable() throws Exception {
906	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
907	+	try (PoolCleaner cleaner = cleaner(e)) {
908	+	Future<?> future = e.submit(new NoOpRunnable());
909	+	future.get();
910	+	assertTrue(future.isDone());
911	+	}
912	+	}
913
914		/**
915	<	*  Test to verify getActiveCount gives correct values
915	>	* completed submit of (runnable, result) returns result
916		*/
917	<	public void testGetActiveCount(){
918	<	ScheduledExecutor two = new ScheduledExecutor(2);
919	<	try {
920	<	assertEquals(0, two.getActiveCount());
921	<	two.execute(newRunnable());
922	<	try{
296	<	Thread.sleep(SHORT_DELAY_MS/2);
297	<	} catch(Exception e){
298	<	fail("unexpected exception");
299	<	}
300	<	assertEquals(1, two.getActiveCount());
301	<	} finally {
302	<	two.shutdown();
917	>	public void testSubmitRunnable2() throws Exception {
918	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
919	>	try (PoolCleaner cleaner = cleaner(e)) {
920	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
921	>	String result = future.get();
922	>	assertSame(TEST_STRING, result);
923		}
924		}
925	<
925	>
926		/**
927	<	*  Test to verify getCompleteTaskCount gives correct values
927	>	* invokeAny(null) throws NullPointerException
928		*/
929	<	public void testGetCompletedTaskCount(){
930	<	ScheduledExecutor two = new ScheduledExecutor(2);
931	<	try {
932	<	assertEquals(0, two.getCompletedTaskCount());
933	<	two.execute(newRunnable());
934	<	try{
935	<	Thread.sleep(MEDIUM_DELAY_MS);
316	<	} catch(Exception e){
317	<	fail("unexpected exception");
318	<	}
319	<	assertEquals(1, two.getCompletedTaskCount());
320	<	} finally {
321	<	two.shutdown();
929	>	public void testInvokeAny1() throws Exception {
930	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
931	>	try (PoolCleaner cleaner = cleaner(e)) {
932	>	try {
933	>	e.invokeAny(null);
934	>	shouldThrow();
935	>	} catch (NullPointerException success) {}
936		}
937		}
938	<
938	>
939		/**
940	<	*  Test to verify getCorePoolSize gives correct values
940	>	* invokeAny(empty collection) throws IllegalArgumentException
941		*/
942	<	public void testGetCorePoolSize(){
943	<	ScheduledExecutor one = new ScheduledExecutor(1);
944	<	try {
945	<	assertEquals(1, one.getCorePoolSize());
946	<	} finally {
947	<	one.shutdown();
942	>	public void testInvokeAny2() throws Exception {
943	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
944	>	try (PoolCleaner cleaner = cleaner(e)) {
945	>	try {
946	>	e.invokeAny(new ArrayList<Callable<String>>());
947	>	shouldThrow();
948	>	} catch (IllegalArgumentException success) {}
949		}
950		}
951	<
951	>
952		/**
953	<	*  Test to verify getLargestPoolSize gives correct values
953	>	* invokeAny(c) throws NullPointerException if c has null elements
954		*/
955	<	public void testGetLargestPoolSize(){
956	<	ScheduledExecutor two = new ScheduledExecutor(2);
957	<	try {
958	<	assertEquals(0, two.getLargestPoolSize());
959	<	two.execute(newRunnable());
960	<	two.execute(newRunnable());
961	<	try{
962	<	Thread.sleep(SHORT_DELAY_MS);
963	<	} catch(Exception e){
964	<	fail("unexpected exception");
955	>	public void testInvokeAny3() throws Exception {
956	>	CountDownLatch latch = new CountDownLatch(1);
957	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
958	>	try (PoolCleaner cleaner = cleaner(e)) {
959	>	List<Callable<String>> l = new ArrayList<>();
960	>	l.add(latchAwaitingStringTask(latch));
961	>	l.add(null);
962	>	try {
963	>	e.invokeAny(l);
964	>	shouldThrow();
965	>	} catch (NullPointerException success) {}
966	>	latch.countDown();
967	>	}
968	>	}
969	>
970	>	/**
971	>	* invokeAny(c) throws ExecutionException if no task completes
972	>	*/
973	>	public void testInvokeAny4() throws Exception {
974	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
975	>	try (PoolCleaner cleaner = cleaner(e)) {
976	>	List<Callable<String>> l = new ArrayList<>();
977	>	l.add(new NPETask());
978	>	try {
979	>	e.invokeAny(l);
980	>	shouldThrow();
981	>	} catch (ExecutionException success) {
982	>	assertTrue(success.getCause() instanceof NullPointerException);
983		}
351	–	assertEquals(2, two.getLargestPoolSize());
352	–	} finally {
353	–	two.shutdown();
984		}
985		}
986	<
986	>
987		/**
988	<	*  Test to verify getPoolSize gives correct values
988	>	* invokeAny(c) returns result of some task
989		*/
990	<	public void testGetPoolSize(){
991	<	ScheduledExecutor one = new ScheduledExecutor(1);
992	<	try {
993	<	assertEquals(0, one.getPoolSize());
994	<	one.execute(newRunnable());
995	<	assertEquals(1, one.getPoolSize());
996	<	} finally {
997	<	one.shutdown();
990	>	public void testInvokeAny5() throws Exception {
991	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
992	>	try (PoolCleaner cleaner = cleaner(e)) {
993	>	List<Callable<String>> l = new ArrayList<>();
994	>	l.add(new StringTask());
995	>	l.add(new StringTask());
996	>	String result = e.invokeAny(l);
997	>	assertSame(TEST_STRING, result);
998		}
999		}
1000	<
1000	>
1001		/**
1002	<	*  Test to verify getTaskCount gives correct values
1002	>	* invokeAll(null) throws NPE
1003		*/
1004	<	public void testGetTaskCount(){
1005	<	ScheduledExecutor one = new ScheduledExecutor(1);
1006	<	try {
1007	<	assertEquals(0, one.getTaskCount());
1008	<	for(int i = 0; i < 5; i++)
1009	<	one.execute(newRunnable());
1010	<	try{
381	<	Thread.sleep(SHORT_DELAY_MS);
382	<	} catch(Exception e){
383	<	fail("unexpected exception");
384	<	}
385	<	assertEquals(5, one.getTaskCount());
386	<	} finally {
387	<	one.shutdown();
388	<	}
389	<	}
390	<
391	<	/**
392	<	*  Test to verify isShutDown gives correct values
393	<	*/
394	<	public void testIsShutdown(){
395	<
396	<	ScheduledExecutor one = new ScheduledExecutor(1);
397	<	try {
398	<	assertFalse(one.isShutdown());
1004	>	public void testInvokeAll1() throws Exception {
1005	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1006	>	try (PoolCleaner cleaner = cleaner(e)) {
1007	>	try {
1008	>	e.invokeAll(null);
1009	>	shouldThrow();
1010	>	} catch (NullPointerException success) {}
1011		}
1012	<	finally {
1013	<	one.shutdown();
1012	>	}
1013	>
1014	>	/**
1015	>	* invokeAll(empty collection) returns empty list
1016	>	*/
1017	>	public void testInvokeAll2() throws Exception {
1018	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1019	>	final Collection<Callable<String>> emptyCollection
1020	>	= Collections.emptyList();
1021	>	try (PoolCleaner cleaner = cleaner(e)) {
1022	>	List<Future<String>> r = e.invokeAll(emptyCollection);
1023	>	assertTrue(r.isEmpty());
1024		}
403	–	assertTrue(one.isShutdown());
1025		}
1026
406	–
1027		/**
1028	<	*  Test to verify isTerminated gives correct values
409	<	*  Makes sure termination does not take an innapropriate
410	<	*  amount of time
1028	>	* invokeAll(c) throws NPE if c has null elements
1029		*/
1030	<	public void testIsTerminated(){
1031	<	ScheduledExecutor one = new ScheduledExecutor(1);
1032	<	try {
1033	<	one.execute(newRunnable());
1034	<	} finally {
1035	<	one.shutdown();
1036	<	}
1037	<	boolean flag = false;
1038	<	try{
1039	<	flag = one.awaitTermination(10, TimeUnit.SECONDS);
1040	<	} catch(Exception e){
423	<	fail("unexpected exception");
424	<	}
425	<	assertTrue(one.isTerminated());
426	<	if(!flag)
427	<	fail("ThreadPoolExecutor - thread pool did not terminate within suitable timeframe");
1030	>	public void testInvokeAll3() throws Exception {
1031	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1032	>	try (PoolCleaner cleaner = cleaner(e)) {
1033	>	List<Callable<String>> l = new ArrayList<>();
1034	>	l.add(new StringTask());
1035	>	l.add(null);
1036	>	try {
1037	>	e.invokeAll(l);
1038	>	shouldThrow();
1039	>	} catch (NullPointerException success) {}
1040	>	}
1041		}
1042
1043		/**
1044	<	*  Test to verify that purge correctly removes cancelled tasks
432	<	*  from the queue
1044	>	* get of invokeAll(c) throws exception on failed task
1045		*/
1046	<	public void testPurge(){
1047	<	ScheduledExecutor one = new ScheduledExecutor(1);
1048	<	try {
1049	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1050	<	for(int i = 0; i < 5; i++){
1051	<	tasks[i] = one.schedule(newRunnable(), 1, TimeUnit.MILLISECONDS);
1046	>	public void testInvokeAll4() throws Exception {
1047	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1048	>	try (PoolCleaner cleaner = cleaner(e)) {
1049	>	List<Callable<String>> l = new ArrayList<>();
1050	>	l.add(new NPETask());
1051	>	List<Future<String>> futures = e.invokeAll(l);
1052	>	assertEquals(1, futures.size());
1053	>	try {
1054	>	futures.get(0).get();
1055	>	shouldThrow();
1056	>	} catch (ExecutionException success) {
1057	>	assertTrue(success.getCause() instanceof NullPointerException);
1058		}
441	–	int max = 5;
442	–	if (tasks[4].cancel(true)) --max;
443	–	if (tasks[3].cancel(true)) --max;
444	–	one.purge();
445	–	long count = one.getTaskCount();
446	–	assertTrue(count > 0 && count <= max);
447	–	} finally {
448	–	one.shutdown();
1059		}
1060		}
1061
1062		/**
1063	<	*  Test to verify shutDownNow returns a list
454	<	*  containing the correct number of elements
1063	>	* invokeAll(c) returns results of all completed tasks
1064		*/
1065	<	public void testShutDownNow(){
1066	<	ScheduledExecutor one = new ScheduledExecutor(1);
1067	<	for(int i = 0; i < 5; i++)
1068	<	one.schedule(newRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
1069	<	List l = one.shutdownNow();
1070	<	assertTrue(one.isShutdown());
1071	<	assertTrue(l.size() > 0 && l.size() <= 5);
1065	>	public void testInvokeAll5() throws Exception {
1066	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1067	>	try (PoolCleaner cleaner = cleaner(e)) {
1068	>	List<Callable<String>> l = new ArrayList<>();
1069	>	l.add(new StringTask());
1070	>	l.add(new StringTask());
1071	>	List<Future<String>> futures = e.invokeAll(l);
1072	>	assertEquals(2, futures.size());
1073	>	for (Future<String> future : futures)
1074	>	assertSame(TEST_STRING, future.get());
1075	>	}
1076		}
1077
1078	<	public void testShutDown1(){
1079	<	try {
1080	<	ScheduledExecutor one = new ScheduledExecutor(1);
1081	<	assertTrue(one.getExecuteExistingDelayedTasksAfterShutdownPolicy());
1082	<	assertFalse(one.getContinueExistingPeriodicTasksAfterShutdownPolicy());
1078	>	/**
1079	>	* timed invokeAny(null) throws NPE
1080	>	*/
1081	>	public void testTimedInvokeAny1() throws Exception {
1082	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1083	>	try (PoolCleaner cleaner = cleaner(e)) {
1084	>	try {
1085	>	e.invokeAny(null, randomTimeout(), randomTimeUnit());
1086	>	shouldThrow();
1087	>	} catch (NullPointerException success) {}
1088	>	}
1089	>	}
1090
1091	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1092	<	for(int i = 0; i < 5; i++)
1093	<	tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
1094	<	one.shutdown();
1095	<	BlockingQueue q = one.getQueue();
1096	<	for (Iterator it = q.iterator(); it.hasNext();) {
1097	<	ScheduledCancellable t = (ScheduledCancellable)it.next();
1098	<	assertFalse(t.isCancelled());
1099	<	}
1100	<	assertTrue(one.isShutdown());
1101	<	Thread.sleep(SHORT_DELAY_MS);
1102	<	for (int i = 0; i < 5; ++i) {
483	<	assertTrue(tasks[i].isDone());
484	<	assertFalse(tasks[i].isCancelled());
485	<	}
486	<
1091	>	/**
1092	>	* timed invokeAny(,,null) throws NullPointerException
1093	>	*/
1094	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1095	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1096	>	try (PoolCleaner cleaner = cleaner(e)) {
1097	>	List<Callable<String>> l = new ArrayList<>();
1098	>	l.add(new StringTask());
1099	>	try {
1100	>	e.invokeAny(l, randomTimeout(), null);
1101	>	shouldThrow();
1102	>	} catch (NullPointerException success) {}
1103		}
1104	<	catch(Exception ex) {
1105	<	fail("unexpected exception");
1104	>	}
1105	>
1106	>	/**
1107	>	* timed invokeAny(empty collection) throws IllegalArgumentException
1108	>	*/
1109	>	public void testTimedInvokeAny2() throws Exception {
1110	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1111	>	final Collection<Callable<String>> emptyCollection
1112	>	= Collections.emptyList();
1113	>	try (PoolCleaner cleaner = cleaner(e)) {
1114	>	try {
1115	>	e.invokeAny(emptyCollection, randomTimeout(), randomTimeUnit());
1116	>	shouldThrow();
1117	>	} catch (IllegalArgumentException success) {}
1118		}
1119		}
1120
1121	+	/**
1122	+	* timed invokeAny(c) throws NPE if c has null elements
1123	+	*/
1124	+	public void testTimedInvokeAny3() throws Exception {
1125	+	CountDownLatch latch = new CountDownLatch(1);
1126	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1127	+	try (PoolCleaner cleaner = cleaner(e)) {
1128	+	List<Callable<String>> l = new ArrayList<>();
1129	+	l.add(latchAwaitingStringTask(latch));
1130	+	l.add(null);
1131	+	try {
1132	+	e.invokeAny(l, randomTimeout(), randomTimeUnit());
1133	+	shouldThrow();
1134	+	} catch (NullPointerException success) {}
1135	+	latch.countDown();
1136	+	}
1137	+	}
1138
1139	<	public void testShutDown2(){
1140	<	try {
1141	<	ScheduledExecutor one = new ScheduledExecutor(1);
1142	<	one.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
1143	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1144	<	for(int i = 0; i < 5; i++)
1145	<	tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
1146	<	one.shutdown();
1147	<	assertTrue(one.isShutdown());
1148	<	BlockingQueue q = one.getQueue();
1149	<	assertTrue(q.isEmpty());
1150	<	Thread.sleep(SHORT_DELAY_MS);
1151	<	assertTrue(one.isTerminated());
1139	>	/**
1140	>	* timed invokeAny(c) throws ExecutionException if no task completes
1141	>	*/
1142	>	public void testTimedInvokeAny4() throws Exception {
1143	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1144	>	try (PoolCleaner cleaner = cleaner(e)) {
1145	>	long startTime = System.nanoTime();
1146	>	List<Callable<String>> l = new ArrayList<>();
1147	>	l.add(new NPETask());
1148	>	try {
1149	>	e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1150	>	shouldThrow();
1151	>	} catch (ExecutionException success) {
1152	>	assertTrue(success.getCause() instanceof NullPointerException);
1153	>	}
1154	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1155		}
1156	<	catch(Exception ex) {
1157	<	fail("unexpected exception");
1156	>	}
1157	>
1158	>	/**
1159	>	* timed invokeAny(c) returns result of some task
1160	>	*/
1161	>	public void testTimedInvokeAny5() throws Exception {
1162	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1163	>	try (PoolCleaner cleaner = cleaner(e)) {
1164	>	long startTime = System.nanoTime();
1165	>	List<Callable<String>> l = new ArrayList<>();
1166	>	l.add(new StringTask());
1167	>	l.add(new StringTask());
1168	>	String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1169	>	assertSame(TEST_STRING, result);
1170	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1171		}
1172		}
1173
1174	+	/**
1175	+	* timed invokeAll(null) throws NPE
1176	+	*/
1177	+	public void testTimedInvokeAll1() throws Exception {
1178	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1179	+	try (PoolCleaner cleaner = cleaner(e)) {
1180	+	try {
1181	+	e.invokeAll(null, randomTimeout(), randomTimeUnit());
1182	+	shouldThrow();
1183	+	} catch (NullPointerException success) {}
1184	+	}
1185	+	}
1186
1187	<	public void testShutDown3(){
1188	<	try {
1189	<	ScheduledExecutor one = new ScheduledExecutor(1);
1190	<	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
1191	<	ScheduledCancellable task =
1192	<	one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1193	<	one.shutdown();
1194	<	assertTrue(one.isShutdown());
1195	<	BlockingQueue q = one.getQueue();
1196	<	assertTrue(q.isEmpty());
1197	<	Thread.sleep(SHORT_DELAY_MS);
1198	<	assertTrue(one.isTerminated());
1187	>	/**
1188	>	* timed invokeAll(,,null) throws NPE
1189	>	*/
1190	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1191	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1192	>	try (PoolCleaner cleaner = cleaner(e)) {
1193	>	List<Callable<String>> l = new ArrayList<>();
1194	>	l.add(new StringTask());
1195	>	try {
1196	>	e.invokeAll(l, randomTimeout(), null);
1197	>	shouldThrow();
1198	>	} catch (NullPointerException success) {}
1199		}
1200	<	catch(Exception ex) {
1201	<	fail("unexpected exception");
1200	>	}
1201	>
1202	>	/**
1203	>	* timed invokeAll(empty collection) returns empty list
1204	>	*/
1205	>	public void testTimedInvokeAll2() throws Exception {
1206	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1207	>	final Collection<Callable<String>> emptyCollection
1208	>	= Collections.emptyList();
1209	>	try (PoolCleaner cleaner = cleaner(e)) {
1210	>	List<Future<String>> r =
1211	>	e.invokeAll(emptyCollection, randomTimeout(), randomTimeUnit());
1212	>	assertTrue(r.isEmpty());
1213		}
1214		}
1215
1216	<	public void testShutDown4(){
1217	<	ScheduledExecutor one = new ScheduledExecutor(1);
1218	<	try {
1219	<	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
1220	<	ScheduledCancellable task =
1221	<	one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1222	<	assertFalse(task.isCancelled());
1223	<	one.shutdown();
1224	<	assertFalse(task.isCancelled());
1225	<	assertFalse(one.isTerminated());
1226	<	assertTrue(one.isShutdown());
1227	<	Thread.sleep(SHORT_DELAY_MS);
1228	<	assertFalse(task.isCancelled());
545	<	task.cancel(true);
546	<	assertTrue(task.isCancelled());
547	<	Thread.sleep(SHORT_DELAY_MS);
548	<	assertTrue(one.isTerminated());
1216	>	/**
1217	>	* timed invokeAll(c) throws NPE if c has null elements
1218	>	*/
1219	>	public void testTimedInvokeAll3() throws Exception {
1220	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1221	>	try (PoolCleaner cleaner = cleaner(e)) {
1222	>	List<Callable<String>> l = new ArrayList<>();
1223	>	l.add(new StringTask());
1224	>	l.add(null);
1225	>	try {
1226	>	e.invokeAll(l, randomTimeout(), randomTimeUnit());
1227	>	shouldThrow();
1228	>	} catch (NullPointerException success) {}
1229		}
1230	<	catch(Exception ex) {
1231	<	fail("unexpected exception");
1230	>	}
1231	>
1232	>	/**
1233	>	* get of element of invokeAll(c) throws exception on failed task
1234	>	*/
1235	>	public void testTimedInvokeAll4() throws Exception {
1236	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1237	>	try (PoolCleaner cleaner = cleaner(e)) {
1238	>	List<Callable<String>> l = new ArrayList<>();
1239	>	l.add(new NPETask());
1240	>	List<Future<String>> futures =
1241	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1242	>	assertEquals(1, futures.size());
1243	>	try {
1244	>	futures.get(0).get();
1245	>	shouldThrow();
1246	>	} catch (ExecutionException success) {
1247	>	assertTrue(success.getCause() instanceof NullPointerException);
1248	>	}
1249		}
1250	<	finally {
1251	<	one.shutdownNow();
1250	>	}
1251	>
1252	>	/**
1253	>	* timed invokeAll(c) returns results of all completed tasks
1254	>	*/
1255	>	public void testTimedInvokeAll5() 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(new StringTask());
1261	>	List<Future<String>> futures =
1262	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1263	>	assertEquals(2, futures.size());
1264	>	for (Future<String> future : futures)
1265	>	assertSame(TEST_STRING, future.get());
1266	>	}
1267	>	}
1268	>
1269	>	/**
1270	>	* timed invokeAll(c) cancels tasks not completed by timeout
1271	>	*/
1272	>	public void testTimedInvokeAll6() throws Exception {
1273	>	for (long timeout = timeoutMillis();;) {
1274	>	final CountDownLatch done = new CountDownLatch(1);
1275	>	final Callable<String> waiter = new CheckedCallable<String>() {
1276	>	public String realCall() {
1277	>	try { done.await(LONG_DELAY_MS, MILLISECONDS); }
1278	>	catch (InterruptedException ok) {}
1279	>	return "1"; }};
1280	>	final ExecutorService p = new ScheduledThreadPoolExecutor(2);
1281	>	try (PoolCleaner cleaner = cleaner(p, done)) {
1282	>	List<Callable<String>> tasks = new ArrayList<>();
1283	>	tasks.add(new StringTask("0"));
1284	>	tasks.add(waiter);
1285	>	tasks.add(new StringTask("2"));
1286	>	long startTime = System.nanoTime();
1287	>	List<Future<String>> futures =
1288	>	p.invokeAll(tasks, timeout, MILLISECONDS);
1289	>	assertEquals(tasks.size(), futures.size());
1290	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1291	>	for (Future future : futures)
1292	>	assertTrue(future.isDone());
1293	>	assertTrue(futures.get(1).isCancelled());
1294	>	try {
1295	>	assertEquals("0", futures.get(0).get());
1296	>	assertEquals("2", futures.get(2).get());
1297	>	break;
1298	>	} catch (CancellationException retryWithLongerTimeout) {
1299	>	timeout *= 2;
1300	>	if (timeout >= LONG_DELAY_MS / 2)
1301	>	fail("expected exactly one task to be cancelled");
1302	>	}
1303	>	}
1304	>	}
1305	>	}
1306	>
1307	>	/**
1308	>	* A fixed delay task with overflowing period should not prevent a
1309	>	* one-shot task from executing.
1310	>	* https://bugs.openjdk.java.net/browse/JDK-8051859
1311	>	*/
1312	>	@SuppressWarnings("FutureReturnValueIgnored")
1313	>	public void testScheduleWithFixedDelay_overflow() throws Exception {
1314	>	final CountDownLatch delayedDone = new CountDownLatch(1);
1315	>	final CountDownLatch immediateDone = new CountDownLatch(1);
1316	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
1317	>	try (PoolCleaner cleaner = cleaner(p)) {
1318	>	final Runnable delayed = () -> {
1319	>	delayedDone.countDown();
1320	>	p.submit(() -> immediateDone.countDown());
1321	>	};
1322	>	p.scheduleWithFixedDelay(delayed, 0L, Long.MAX_VALUE, SECONDS);
1323	>	await(delayedDone);
1324	>	await(immediateDone);
1325		}
1326		}
1327

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