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

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:55 2003 UTC vs.
Revision 1.66 by jsr166, Mon Oct 5 21:54:33 2015 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.*;
10	<	import java.util.concurrent.*;
11	<
12	<	public class ScheduledExecutorTest extends TestCase{
13	<
14	<	boolean flag = false;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.SECONDS;
11
12	+	import java.util.ArrayList;
13	+	import java.util.HashSet;
14	+	import java.util.List;
15	+	import java.util.concurrent.BlockingQueue;
16	+	import java.util.concurrent.Callable;
17	+	import java.util.concurrent.CancellationException;
18	+	import java.util.concurrent.CountDownLatch;
19	+	import java.util.concurrent.ExecutionException;
20	+	import java.util.concurrent.Executors;
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.ThreadPoolExecutor;
28	+	import java.util.concurrent.atomic.AtomicInteger;
29	+
30	+	import junit.framework.Test;
31	+	import junit.framework.TestSuite;
32	+
33	+	public class ScheduledExecutorTest extends JSR166TestCase {
34		public static void main(String[] args) {
35	<	junit.textui.TestRunner.run (suite());
35	>	main(suite(), args);
36		}
19	–
20	–
37		public static Test suite() {
38	<	return new TestSuite(ScheduledExecutorTest.class);
38	>	return new TestSuite(ScheduledExecutorTest.class);
39	>	}
40	>
41	>	/**
42	>	* execute successfully executes a runnable
43	>	*/
44	>	public void testExecute() throws InterruptedException {
45	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
46	>	try (PoolCleaner cleaner = cleaner(p)) {
47	>	final CountDownLatch done = new CountDownLatch(1);
48	>	final Runnable task = new CheckedRunnable() {
49	>	public void realRun() { done.countDown(); }};
50	>	p.execute(task);
51	>	assertTrue(done.await(SMALL_DELAY_MS, MILLISECONDS));
52	>	}
53	>	}
54	>
55	>	/**
56	>	* delayed schedule of callable successfully executes after delay
57	>	*/
58	>	public void testSchedule1() throws Exception {
59	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
60	>	try (PoolCleaner cleaner = cleaner(p)) {
61	>	final long startTime = System.nanoTime();
62	>	final CountDownLatch done = new CountDownLatch(1);
63	>	Callable task = new CheckedCallable<Boolean>() {
64	>	public Boolean realCall() {
65	>	done.countDown();
66	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
67	>	return Boolean.TRUE;
68	>	}};
69	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
70	>	assertSame(Boolean.TRUE, f.get());
71	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
72	>	assertTrue(done.await(0L, MILLISECONDS));
73	>	}
74	>	}
75	>
76	>	/**
77	>	* delayed schedule of runnable successfully executes after delay
78	>	*/
79	>	public void testSchedule3() throws Exception {
80	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
81	>	try (PoolCleaner cleaner = cleaner(p)) {
82	>	final long startTime = System.nanoTime();
83	>	final CountDownLatch done = new CountDownLatch(1);
84	>	Runnable task = new CheckedRunnable() {
85	>	public void realRun() {
86	>	done.countDown();
87	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
88	>	}};
89	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
90	>	await(done);
91	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
92	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
93	>	}
94	>	}
95	>
96	>	/**
97	>	* scheduleAtFixedRate executes runnable after given initial delay
98	>	*/
99	>	public void testSchedule4() throws Exception {
100	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
101	>	try (PoolCleaner cleaner = cleaner(p)) {
102	>	final long startTime = System.nanoTime();
103	>	final CountDownLatch done = new CountDownLatch(1);
104	>	Runnable task = new CheckedRunnable() {
105	>	public void realRun() {
106	>	done.countDown();
107	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
108	>	}};
109	>	ScheduledFuture f =
110	>	p.scheduleAtFixedRate(task, timeoutMillis(),
111	>	LONG_DELAY_MS, MILLISECONDS);
112	>	await(done);
113	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
114	>	f.cancel(true);
115	>	}
116	>	}
117	>
118	>	/**
119	>	* scheduleWithFixedDelay executes runnable after given initial delay
120	>	*/
121	>	public void testSchedule5() throws Exception {
122	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
123	>	try (PoolCleaner cleaner = cleaner(p)) {
124	>	final long startTime = System.nanoTime();
125	>	final CountDownLatch done = new CountDownLatch(1);
126	>	Runnable task = new CheckedRunnable() {
127	>	public void realRun() {
128	>	done.countDown();
129	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
130	>	}};
131	>	ScheduledFuture f =
132	>	p.scheduleWithFixedDelay(task, timeoutMillis(),
133	>	LONG_DELAY_MS, MILLISECONDS);
134	>	await(done);
135	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
136	>	f.cancel(true);
137	>	}
138	>	}
139	>
140	>	static class RunnableCounter implements Runnable {
141	>	AtomicInteger count = new AtomicInteger(0);
142	>	public void run() { count.getAndIncrement(); }
143	>	}
144	>
145	>	/**
146	>	* scheduleAtFixedRate executes series of tasks at given rate
147	>	*/
148	>	public void testFixedRateSequence() throws InterruptedException {
149	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
150	>	try (PoolCleaner cleaner = cleaner(p)) {
151	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
152	>	long startTime = System.nanoTime();
153	>	int cycles = 10;
154	>	final CountDownLatch done = new CountDownLatch(cycles);
155	>	Runnable task = new CheckedRunnable() {
156	>	public void realRun() { done.countDown(); }};
157	>	ScheduledFuture h =
158	>	p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
159	>	done.await();
160	>	h.cancel(true);
161	>	double normalizedTime =
162	>	(double) millisElapsedSince(startTime) / delay;
163	>	if (normalizedTime >= cycles - 1 &&
164	>	normalizedTime <= cycles)
165	>	return;
166	>	}
167	>	throw new AssertionError("unexpected execution rate");
168	>	}
169	>	}
170	>
171	>	/**
172	>	* scheduleWithFixedDelay executes series of tasks with given period
173	>	*/
174	>	public void testFixedDelaySequence() throws InterruptedException {
175	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
176	>	try (PoolCleaner cleaner = cleaner(p)) {
177	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
178	>	long startTime = System.nanoTime();
179	>	int cycles = 10;
180	>	final CountDownLatch done = new CountDownLatch(cycles);
181	>	Runnable task = new CheckedRunnable() {
182	>	public void realRun() { done.countDown(); }};
183	>	ScheduledFuture h =
184	>	p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
185	>	done.await();
186	>	h.cancel(true);
187	>	double normalizedTime =
188	>	(double) millisElapsedSince(startTime) / delay;
189	>	if (normalizedTime >= cycles - 1 &&
190	>	normalizedTime <= cycles)
191	>	return;
192	>	}
193	>	throw new AssertionError("unexpected execution rate");
194	>	}
195	>	}
196	>
197	>	/**
198	>	* execute(null) throws NPE
199	>	*/
200	>	public void testExecuteNull() throws InterruptedException {
201	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
202	>	try (PoolCleaner cleaner = cleaner(p)) {
203	>	try {
204	>	p.execute(null);
205	>	shouldThrow();
206	>	} catch (NullPointerException success) {}
207	>	}
208	>	}
209	>
210	>	/**
211	>	* schedule(null) throws NPE
212	>	*/
213	>	public void testScheduleNull() throws InterruptedException {
214	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
215	>	try (PoolCleaner cleaner = cleaner(p)) {
216	>	try {
217	>	TrackedCallable callable = null;
218	>	Future f = p.schedule(callable, SHORT_DELAY_MS, MILLISECONDS);
219	>	shouldThrow();
220	>	} catch (NullPointerException success) {}
221	>	}
222	>	}
223	>
224	>	/**
225	>	* execute throws RejectedExecutionException if shutdown
226	>	*/
227	>	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
228	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
229	>	try (PoolCleaner cleaner = cleaner(p)) {
230	>	try {
231	>	p.shutdown();
232	>	p.schedule(new NoOpRunnable(),
233	>	MEDIUM_DELAY_MS, MILLISECONDS);
234	>	shouldThrow();
235	>	} catch (RejectedExecutionException success) {
236	>	} catch (SecurityException ok) {}
237	>	}
238	>	}
239	>
240	>	/**
241	>	* schedule throws RejectedExecutionException if shutdown
242	>	*/
243	>	public void testSchedule2_RejectedExecutionException() throws InterruptedException {
244	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
245	>	try (PoolCleaner cleaner = cleaner(p)) {
246	>	try {
247	>	p.shutdown();
248	>	p.schedule(new NoOpCallable(),
249	>	MEDIUM_DELAY_MS, MILLISECONDS);
250	>	shouldThrow();
251	>	} catch (RejectedExecutionException success) {
252	>	} catch (SecurityException ok) {}
253	>	}
254	>	}
255	>
256	>	/**
257	>	* schedule callable throws RejectedExecutionException if shutdown
258	>	*/
259	>	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
260	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
261	>	try (PoolCleaner cleaner = cleaner(p)) {
262	>	try {
263	>	p.shutdown();
264	>	p.schedule(new NoOpCallable(),
265	>	MEDIUM_DELAY_MS, MILLISECONDS);
266	>	shouldThrow();
267	>	} catch (RejectedExecutionException success) {
268	>	} catch (SecurityException ok) {}
269	>	}
270	>	}
271	>
272	>	/**
273	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
274	>	*/
275	>	public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
276	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
277	>	try (PoolCleaner cleaner = cleaner(p)) {
278	>	try {
279	>	p.shutdown();
280	>	p.scheduleAtFixedRate(new NoOpRunnable(),
281	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
282	>	shouldThrow();
283	>	} catch (RejectedExecutionException success) {
284	>	} catch (SecurityException ok) {}
285	>	}
286	>	}
287	>
288	>	/**
289	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
290	>	*/
291	>	public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
292	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
293	>	try (PoolCleaner cleaner = cleaner(p)) {
294	>	try {
295	>	p.shutdown();
296	>	p.scheduleWithFixedDelay(new NoOpRunnable(),
297	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
298	>	shouldThrow();
299	>	} catch (RejectedExecutionException success) {
300	>	} catch (SecurityException ok) {}
301	>	}
302	>	}
303	>
304	>	/**
305	>	* getActiveCount increases but doesn't overestimate, when a
306	>	* thread becomes active
307	>	*/
308	>	public void testGetActiveCount() throws InterruptedException {
309	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
310	>	try (PoolCleaner cleaner = cleaner(p)) {
311	>	final CountDownLatch threadStarted = new CountDownLatch(1);
312	>	final CountDownLatch done = new CountDownLatch(1);
313	>	assertEquals(0, p.getActiveCount());
314	>	p.execute(new CheckedRunnable() {
315	>	public void realRun() throws InterruptedException {
316	>	threadStarted.countDown();
317	>	assertEquals(1, p.getActiveCount());
318	>	done.await();
319	>	}});
320	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
321	>	assertEquals(1, p.getActiveCount());
322	>	done.countDown();
323	>	}
324	>	}
325	>
326	>	/**
327	>	* getCompletedTaskCount increases, but doesn't overestimate,
328	>	* when tasks complete
329	>	*/
330	>	public void testGetCompletedTaskCount() throws InterruptedException {
331	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
332	>	try (PoolCleaner cleaner = cleaner(p)) {
333	>	final CountDownLatch threadStarted = new CountDownLatch(1);
334	>	final CountDownLatch threadProceed = new CountDownLatch(1);
335	>	final CountDownLatch threadDone = new CountDownLatch(1);
336	>	assertEquals(0, p.getCompletedTaskCount());
337	>	p.execute(new CheckedRunnable() {
338	>	public void realRun() throws InterruptedException {
339	>	threadStarted.countDown();
340	>	assertEquals(0, p.getCompletedTaskCount());
341	>	threadProceed.await();
342	>	threadDone.countDown();
343	>	}});
344	>	await(threadStarted);
345	>	assertEquals(0, p.getCompletedTaskCount());
346	>	threadProceed.countDown();
347	>	threadDone.await();
348	>	long startTime = System.nanoTime();
349	>	while (p.getCompletedTaskCount() != 1) {
350	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
351	>	fail("timed out");
352	>	Thread.yield();
353	>	}
354	>	}
355	>	}
356	>
357	>	/**
358	>	* getCorePoolSize returns size given in constructor if not otherwise set
359	>	*/
360	>	public void testGetCorePoolSize() throws InterruptedException {
361	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
362	>	try (PoolCleaner cleaner = cleaner(p)) {
363	>	assertEquals(1, p.getCorePoolSize());
364	>	}
365	>	}
366	>
367	>	/**
368	>	* getLargestPoolSize increases, but doesn't overestimate, when
369	>	* multiple threads active
370	>	*/
371	>	public void testGetLargestPoolSize() throws InterruptedException {
372	>	final int THREADS = 3;
373	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
374	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
375	>	final CountDownLatch done = new CountDownLatch(1);
376	>	try (PoolCleaner cleaner = cleaner(p)) {
377	>	assertEquals(0, p.getLargestPoolSize());
378	>	for (int i = 0; i < THREADS; i++)
379	>	p.execute(new CheckedRunnable() {
380	>	public void realRun() throws InterruptedException {
381	>	threadsStarted.countDown();
382	>	done.await();
383	>	assertEquals(THREADS, p.getLargestPoolSize());
384	>	}});
385	>	assertTrue(threadsStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
386	>	assertEquals(THREADS, p.getLargestPoolSize());
387	>	done.countDown();
388	>	}
389	>	assertEquals(THREADS, p.getLargestPoolSize());
390	>	}
391	>
392	>	/**
393	>	* getPoolSize increases, but doesn't overestimate, when threads
394	>	* become active
395	>	*/
396	>	public void testGetPoolSize() throws InterruptedException {
397	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
398	>	final CountDownLatch threadStarted = new CountDownLatch(1);
399	>	final CountDownLatch done = new CountDownLatch(1);
400	>	try (PoolCleaner cleaner = cleaner(p)) {
401	>	assertEquals(0, p.getPoolSize());
402	>	p.execute(new CheckedRunnable() {
403	>	public void realRun() throws InterruptedException {
404	>	threadStarted.countDown();
405	>	assertEquals(1, p.getPoolSize());
406	>	done.await();
407	>	}});
408	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
409	>	assertEquals(1, p.getPoolSize());
410	>	done.countDown();
411	>	}
412	>	}
413	>
414	>	/**
415	>	* getTaskCount increases, but doesn't overestimate, when tasks
416	>	* submitted
417	>	*/
418	>	public void testGetTaskCount() throws InterruptedException {
419	>	final int TASKS = 3;
420	>	final CountDownLatch done = new CountDownLatch(1);
421	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
422	>	try (PoolCleaner cleaner = cleaner(p, done)) {
423	>	final CountDownLatch threadStarted = new CountDownLatch(1);
424	>	assertEquals(0, p.getTaskCount());
425	>	assertEquals(0, p.getCompletedTaskCount());
426	>	p.execute(new CheckedRunnable() {
427	>	public void realRun() throws InterruptedException {
428	>	threadStarted.countDown();
429	>	done.await();
430	>	}});
431	>	assertTrue(threadStarted.await(LONG_DELAY_MS, MILLISECONDS));
432	>	assertEquals(1, p.getTaskCount());
433	>	assertEquals(0, p.getCompletedTaskCount());
434	>	for (int i = 0; i < TASKS; i++) {
435	>	assertEquals(1 + i, p.getTaskCount());
436	>	p.execute(new CheckedRunnable() {
437	>	public void realRun() throws InterruptedException {
438	>	threadStarted.countDown();
439	>	assertEquals(1 + TASKS, p.getTaskCount());
440	>	done.await();
441	>	}});
442	>	}
443	>	assertEquals(1 + TASKS, p.getTaskCount());
444	>	assertEquals(0, p.getCompletedTaskCount());
445	>	}
446	>	assertEquals(1 + TASKS, p.getTaskCount());
447	>	assertEquals(1 + TASKS, p.getCompletedTaskCount());
448	>	}
449	>
450	>	/**
451	>	* getThreadFactory returns factory in constructor if not set
452	>	*/
453	>	public void testGetThreadFactory() throws InterruptedException {
454	>	final ThreadFactory threadFactory = new SimpleThreadFactory();
455	>	final ScheduledThreadPoolExecutor p =
456	>	new ScheduledThreadPoolExecutor(1, threadFactory);
457	>	try (PoolCleaner cleaner = cleaner(p)) {
458	>	assertSame(threadFactory, p.getThreadFactory());
459	>	}
460	>	}
461	>
462	>	/**
463	>	* setThreadFactory sets the thread factory returned by getThreadFactory
464	>	*/
465	>	public void testSetThreadFactory() throws InterruptedException {
466	>	ThreadFactory threadFactory = new SimpleThreadFactory();
467	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
468	>	try (PoolCleaner cleaner = cleaner(p)) {
469	>	p.setThreadFactory(threadFactory);
470	>	assertSame(threadFactory, p.getThreadFactory());
471	>	}
472	>	}
473	>
474	>	/**
475	>	* setThreadFactory(null) throws NPE
476	>	*/
477	>	public void testSetThreadFactoryNull() throws InterruptedException {
478	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
479	>	try (PoolCleaner cleaner = cleaner(p)) {
480	>	try {
481	>	p.setThreadFactory(null);
482	>	shouldThrow();
483	>	} catch (NullPointerException success) {}
484	>	}
485	>	}
486	>
487	>	/**
488	>	* isShutdown is false before shutdown, true after
489	>	*/
490	>	public void testIsShutdown() {
491	>
492	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
493	>	try {
494	>	assertFalse(p.isShutdown());
495	>	}
496	>	finally {
497	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
498	>	}
499	>	assertTrue(p.isShutdown());
500	>	}
501	>
502	>	/**
503	>	* isTerminated is false before termination, true after
504	>	*/
505	>	public void testIsTerminated() throws InterruptedException {
506	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
507	>	try (PoolCleaner cleaner = cleaner(p)) {
508	>	final CountDownLatch threadStarted = new CountDownLatch(1);
509	>	final CountDownLatch done = new CountDownLatch(1);
510	>	assertFalse(p.isTerminated());
511	>	p.execute(new CheckedRunnable() {
512	>	public void realRun() throws InterruptedException {
513	>	assertFalse(p.isTerminated());
514	>	threadStarted.countDown();
515	>	done.await();
516	>	}});
517	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
518	>	assertFalse(p.isTerminating());
519	>	done.countDown();
520	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
521	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
522	>	assertTrue(p.isTerminated());
523	>	}
524	>	}
525	>
526	>	/**
527	>	* isTerminating is not true when running or when terminated
528	>	*/
529	>	public void testIsTerminating() throws InterruptedException {
530	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
531	>	final CountDownLatch threadStarted = new CountDownLatch(1);
532	>	final CountDownLatch done = new CountDownLatch(1);
533	>	try (PoolCleaner cleaner = cleaner(p)) {
534	>	assertFalse(p.isTerminating());
535	>	p.execute(new CheckedRunnable() {
536	>	public void realRun() throws InterruptedException {
537	>	assertFalse(p.isTerminating());
538	>	threadStarted.countDown();
539	>	done.await();
540	>	}});
541	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
542	>	assertFalse(p.isTerminating());
543	>	done.countDown();
544	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
545	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
546	>	assertTrue(p.isTerminated());
547	>	assertFalse(p.isTerminating());
548	>	}
549	>	}
550	>
551	>	/**
552	>	* getQueue returns the work queue, which contains queued tasks
553	>	*/
554	>	public void testGetQueue() throws InterruptedException {
555	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
556	>	try (PoolCleaner cleaner = cleaner(p)) {
557	>	final CountDownLatch threadStarted = new CountDownLatch(1);
558	>	final CountDownLatch done = new CountDownLatch(1);
559	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
560	>	for (int i = 0; i < tasks.length; i++) {
561	>	Runnable r = new CheckedRunnable() {
562	>	public void realRun() throws InterruptedException {
563	>	threadStarted.countDown();
564	>	done.await();
565	>	}};
566	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
567	>	}
568	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
569	>	BlockingQueue<Runnable> q = p.getQueue();
570	>	assertTrue(q.contains(tasks[tasks.length - 1]));
571	>	assertFalse(q.contains(tasks[0]));
572	>	done.countDown();
573	>	}
574	>	}
575	>
576	>	/**
577	>	* remove(task) removes queued task, and fails to remove active task
578	>	*/
579	>	public void testRemove() throws InterruptedException {
580	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
581	>	try (PoolCleaner cleaner = cleaner(p)) {
582	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
583	>	final CountDownLatch threadStarted = new CountDownLatch(1);
584	>	final CountDownLatch done = new CountDownLatch(1);
585	>	for (int i = 0; i < tasks.length; i++) {
586	>	Runnable r = new CheckedRunnable() {
587	>	public void realRun() throws InterruptedException {
588	>	threadStarted.countDown();
589	>	done.await();
590	>	}};
591	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
592	>	}
593	>	assertTrue(threadStarted.await(MEDIUM_DELAY_MS, MILLISECONDS));
594	>	BlockingQueue<Runnable> q = p.getQueue();
595	>	assertFalse(p.remove((Runnable)tasks[0]));
596	>	assertTrue(q.contains((Runnable)tasks[4]));
597	>	assertTrue(q.contains((Runnable)tasks[3]));
598	>	assertTrue(p.remove((Runnable)tasks[4]));
599	>	assertFalse(p.remove((Runnable)tasks[4]));
600	>	assertFalse(q.contains((Runnable)tasks[4]));
601	>	assertTrue(q.contains((Runnable)tasks[3]));
602	>	assertTrue(p.remove((Runnable)tasks[3]));
603	>	assertFalse(q.contains((Runnable)tasks[3]));
604	>	done.countDown();
605	>	}
606	>	}
607	>
608	>	/**
609	>	* purge eventually removes cancelled tasks from the queue
610	>	*/
611	>	public void testPurge() throws InterruptedException {
612	>	final ScheduledFuture[] tasks = new ScheduledFuture[5];
613	>	final Runnable releaser = new Runnable() { public void run() {
614	>	for (ScheduledFuture task : tasks)
615	>	if (task != null) task.cancel(true); }};
616	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
617	>	try (PoolCleaner cleaner = cleaner(p, releaser)) {
618	>	for (int i = 0; i < tasks.length; i++)
619	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
620	>	LONG_DELAY_MS, MILLISECONDS);
621	>	int max = tasks.length;
622	>	if (tasks[4].cancel(true)) --max;
623	>	if (tasks[3].cancel(true)) --max;
624	>	// There must eventually be an interference-free point at
625	>	// which purge will not fail. (At worst, when queue is empty.)
626	>	long startTime = System.nanoTime();
627	>	do {
628	>	p.purge();
629	>	long count = p.getTaskCount();
630	>	if (count == max)
631	>	return;
632	>	} while (millisElapsedSince(startTime) < LONG_DELAY_MS);
633	>	fail("Purge failed to remove cancelled tasks");
634	>	}
635		}
636
637	<	private static long SHORT_DELAY_MS = 100;
638	<	private static long MEDIUM_DELAY_MS = 1000;
639	<	private static long LONG_DELAY_MS = 10000;
640	<
641	<	static class MyRunnable implements Runnable {
642	<	volatile boolean waiting = true;
643	<	volatile boolean done = false;
644	<	public void run(){
645	<	try{
646	<	Thread.sleep(MEDIUM_DELAY_MS);
647	<	waiting = false;
648	<	done = true;
649	<	} catch(Exception e){}
650	<	}
651	<	}
652	<
653	<	static class MyCallable implements Callable {
654	<	volatile boolean waiting = true;
655	<	volatile boolean done = false;
656	<	public Object call(){
657	<	try{
658	<	Thread.sleep(MEDIUM_DELAY_MS);
659	<	waiting = false;
660	<	done = true;
661	<	}catch(Exception e){}
662	<	return Boolean.TRUE;
663	<	}
664	<	}
665	<
666	<	/**
667	<	*  Test to verify execute successfully runs the given Runnable
668	<	*/
669	<	public void testExecute(){
670	<	try{
671	<	MyRunnable runnable =new MyRunnable();
672	<	ScheduledExecutor one = new ScheduledExecutor(1);
673	<	one.execute(runnable);
674	<	Thread.sleep(100);
675	<	assertTrue(runnable.waiting);
676	<	one.shutdown();
677	<	// make sure the Runnable has time to complete
678	<	try{Thread.sleep(1010);}catch(InterruptedException e){}
679	<	assertFalse(runnable.waiting);
680	<	assertTrue(runnable.done);
681	<	one.shutdown();
682	<	}
683	<	catch(Exception e){
684	<	fail("unexpected exception");
685	<	}
686	<	}
687	<
688	<	/**
689	<	*  Test to verify schedule successfully runs the given Callable.
690	<	*  The waiting flag shows that the Callable is not started until
691	<	*  immediately.
692	<	*/
693	<	public void testSchedule1(){
694	<	try{
695	<	MyCallable callable = new MyCallable();
696	<	ScheduledExecutor one = new ScheduledExecutor(1);
697	<	Future f = one.schedule(callable, 500, TimeUnit.MILLISECONDS);
698	<	//      Thread.sleep(505);
699	<	assertTrue(callable.waiting);
700	<	Thread.sleep(2000);
701	<	assertTrue(callable.done);
702	<	assertEquals(Boolean.TRUE, f.get());
703	<	one.shutdown();
704	<	}catch(RejectedExecutionException e){}
705	<	catch(Exception e){}
706	<	}
707	<
708	<	/**
709	<	*  Another version of schedule, only using Runnable instead of Callable
710	<	*/
711	<	public void testSchedule3(){
712	<	try{
713	<	MyRunnable runnable = new MyRunnable();
714	<	ScheduledExecutor one = new ScheduledExecutor(1);
715	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
716	<	Thread.sleep(50);
717	<	assertTrue(runnable.waiting);
718	<	Thread.sleep(2000);
719	<	assertTrue(runnable.done);
720	<	one.shutdown();
721	<	} catch(Exception e){
722	<	fail("unexpected exception");
723	<	}
724	<	}
725	<
726	<	/**
727	<	*  The final version of schedule, using both long, TimeUnit and Runnable
728	<	*/
729	<	public void testSchedule4(){
730	<	try{
731	<	MyRunnable runnable = new MyRunnable();
732	<	ScheduledExecutor one = new ScheduledExecutor(1);
733	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
734	<	//      Thread.sleep(505);
735	<	assertTrue(runnable.waiting);
736	<	Thread.sleep(2000);
737	<	assertTrue(runnable.done);
738	<	one.shutdown();
739	<	} catch(Exception e){
740	<	fail("unexpected exception");
741	<	}
742	<	}
743	<
744	<
745	<	// exception tests
746	<
747	<	/**
748	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
749	<	*  This occurs on an attempt to schedule a task on a shutdown executor
750	<	*/
751	<	public void testSchedule1_RejectedExecutionException(){
752	<	try{
753	<	ScheduledExecutor se = new ScheduledExecutor(1);
754	<	se.shutdown();
755	<	se.schedule(new Runnable(){
756	<	public void run(){}
757	<	}, 10000, TimeUnit.MILLISECONDS);
758	<	fail("shoud throw");
759	<	}catch(RejectedExecutionException e){}
760	<	}
761	<
762	<	/**
763	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
764	<	*  This occurs on an attempt to schedule a task on a shutdown executor
765	<	*/
766	<	public void testSchedule2_RejectedExecutionException(){
767	<	try{
768	<	ScheduledExecutor se = new ScheduledExecutor(1);
769	<	se.shutdown();
770	<	se.schedule(new Callable(){
771	<	public Object call(){
772	<	return Boolean.TRUE;
773	<	}
774	<	}, (long)100, TimeUnit.SECONDS);
775	<	fail("should throw");
776	<	}catch(RejectedExecutionException e){}
777	<	}
778	<
779	<	/**
780	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
781	<	*  This occurs on an attempt to schedule a task on a shutdown executor
782	<	*/
783	<	public void testSchedule3_RejectedExecutionException(){
784	<	try{
785	<	ScheduledExecutor se = new ScheduledExecutor(1);
786	<	se.shutdown();
787	<	se.schedule(new Callable(){
788	<	public Object call(){
789	<	return Boolean.TRUE;
790	<	}
791	<	},  10000, TimeUnit.MILLISECONDS);
792	<	fail("should throw");
793	<	}catch(RejectedExecutionException e){}
794	<	}
795	<
796	<	/**
797	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
798	<	*  RejectedExecutionException.
799	<	*  This occurs on an attempt to schedule a task on a shutdown executor
800	<	*/
801	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
802	<	try{
803	<	ScheduledExecutor se = new ScheduledExecutor(1);
804	<	se.shutdown();
805	<	se.scheduleAtFixedRate(new Runnable(){
806	<	public void run(){}
807	<	}, 100, 100, TimeUnit.SECONDS);
808	<	fail("should throw");
809	<	}catch(RejectedExecutionException e){}
810	<	}
811	<
812	<	/**
813	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
814	<	*  RejectedExecutionException.
815	<	*  This occurs on an attempt to schedule a task on a shutdown executor
816	<	*/
817	<	public void testScheduleAtFixedRate2_RejectedExecutionException(){
818	<	try{
819	<	ScheduledExecutor se = new ScheduledExecutor(1);
820	<	se.shutdown();
821	<	se.scheduleAtFixedRate(new Runnable(){
822	<	public void run(){}
823	<	},  1, 100, TimeUnit.SECONDS);
824	<	fail("should throw");
825	<	}catch(RejectedExecutionException e){}
826	<	}
827	<
828	<	/**
829	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
830	<	*  RejectedExecutionException.
831	<	*  This occurs on an attempt to schedule a task on a shutdown executor
832	<	*/
833	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
834	<	try{
835	<	ScheduledExecutor se = new ScheduledExecutor(1);
836	<	se.shutdown();
837	<	se.scheduleWithFixedDelay(new Runnable(){
838	<	public void run(){}
839	<	}, 100, 100, TimeUnit.SECONDS);
840	<	fail("should throw");
841	<	}catch(RejectedExecutionException e){}
842	<	}
843	<
844	<	/**
845	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
846	<	*  RejectedExecutionException.
847	<	*  This occurs on an attempt to schedule a task on a shutdown executor
848	<	*/
849	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
850	<	try{
851	<	ScheduledExecutor se = new ScheduledExecutor(1);
852	<	se.shutdown();
853	<	se.scheduleWithFixedDelay(new Runnable(){
854	<	public void run(){}
855	<	},  1, 100, TimeUnit.SECONDS);
856	<	fail("should throw");
857	<	}catch(RejectedExecutionException e){}
858	<	}
859	<
860	<	/**
861	<	*  Test to verify execute throws RejectedExecutionException
862	<	*  This occurs on an attempt to schedule a task on a shutdown executor
863	<	*/
864	<	public void testExecute_RejectedExecutionException(){
865	<	try{
866	<	ScheduledExecutor se = new ScheduledExecutor(1);
867	<	se.shutdown();
868	<	se.execute(new Runnable(){
869	<	public void run(){}
870	<	});
871	<	fail("should throw");
872	<	}catch(RejectedExecutionException e){}
637	>	/**
638	>	* shutdownNow returns a list containing tasks that were not run,
639	>	* and those tasks are drained from the queue
640	>	*/
641	>	public void testShutdownNow() throws InterruptedException {
642	>	final int poolSize = 2;
643	>	final int count = 5;
644	>	final AtomicInteger ran = new AtomicInteger(0);
645	>	final ScheduledThreadPoolExecutor p =
646	>	new ScheduledThreadPoolExecutor(poolSize);
647	>	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
648	>	Runnable waiter = new CheckedRunnable() { public void realRun() {
649	>	threadsStarted.countDown();
650	>	try {
651	>	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
652	>	} catch (InterruptedException success) {}
653	>	ran.getAndIncrement();
654	>	}};
655	>	for (int i = 0; i < count; i++)
656	>	p.execute(waiter);
657	>	assertTrue(threadsStarted.await(LONG_DELAY_MS, MILLISECONDS));
658	>	assertEquals(poolSize, p.getActiveCount());
659	>	assertEquals(0, p.getCompletedTaskCount());
660	>	final List<Runnable> queuedTasks;
661	>	try {
662	>	queuedTasks = p.shutdownNow();
663	>	} catch (SecurityException ok) {
664	>	return; // Allowed in case test doesn't have privs
665	>	}
666	>	assertTrue(p.isShutdown());
667	>	assertTrue(p.getQueue().isEmpty());
668	>	assertEquals(count - poolSize, queuedTasks.size());
669	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
670	>	assertTrue(p.isTerminated());
671	>	assertEquals(poolSize, ran.get());
672	>	assertEquals(poolSize, p.getCompletedTaskCount());
673	>	}
674	>
675	>	/**
676	>	* shutdownNow returns a list containing tasks that were not run,
677	>	* and those tasks are drained from the queue
678	>	*/
679	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
680	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
681	>	List<ScheduledFuture> tasks = new ArrayList<>();
682	>	for (int i = 0; i < 3; i++) {
683	>	Runnable r = new NoOpRunnable();
684	>	tasks.add(p.schedule(r, 9, SECONDS));
685	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
686	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
687	>	}
688	>	if (testImplementationDetails)
689	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
690	>	final List<Runnable> queuedTasks;
691	>	try {
692	>	queuedTasks = p.shutdownNow();
693	>	} catch (SecurityException ok) {
694	>	return; // Allowed in case test doesn't have privs
695	>	}
696	>	assertTrue(p.isShutdown());
697	>	assertTrue(p.getQueue().isEmpty());
698	>	if (testImplementationDetails)
699	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
700	>	assertEquals(tasks.size(), queuedTasks.size());
701	>	for (ScheduledFuture task : tasks) {
702	>	assertFalse(task.isDone());
703	>	assertFalse(task.isCancelled());
704	>	}
705	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
706	>	assertTrue(p.isTerminated());
707	>	}
708	>
709	>	/**
710	>	* By default, periodic tasks are cancelled at shutdown.
711	>	* By default, delayed tasks keep running after shutdown.
712	>	* Check that changing the default values work:
713	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
714	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
715	>	*/
716	>	public void testShutdown_cancellation() throws Exception {
717	>	Boolean[] allBooleans = { null, Boolean.FALSE, Boolean.TRUE };
718	>	for (Boolean policy : allBooleans)
719	>	{
720	>	final int poolSize = 2;
721	>	final ScheduledThreadPoolExecutor p
722	>	= new ScheduledThreadPoolExecutor(poolSize);
723	>	final boolean effectiveDelayedPolicy = (policy != Boolean.FALSE);
724	>	final boolean effectivePeriodicPolicy = (policy == Boolean.TRUE);
725	>	final boolean effectiveRemovePolicy = (policy == Boolean.TRUE);
726	>	if (policy != null) {
727	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(policy);
728	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(policy);
729	>	p.setRemoveOnCancelPolicy(policy);
730	>	}
731	>	assertEquals(effectiveDelayedPolicy,
732	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
733	>	assertEquals(effectivePeriodicPolicy,
734	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
735	>	assertEquals(effectiveRemovePolicy,
736	>	p.getRemoveOnCancelPolicy());
737	>	// Strategy: Wedge the pool with poolSize "blocker" threads
738	>	final AtomicInteger ran = new AtomicInteger(0);
739	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
740	>	final CountDownLatch unblock = new CountDownLatch(1);
741	>	final CountDownLatch periodicLatch1 = new CountDownLatch(2);
742	>	final CountDownLatch periodicLatch2 = new CountDownLatch(2);
743	>	Runnable task = new CheckedRunnable() { public void realRun()
744	>	throws InterruptedException {
745	>	poolBlocked.countDown();
746	>	assertTrue(unblock.await(LONG_DELAY_MS, MILLISECONDS));
747	>	ran.getAndIncrement();
748	>	}};
749	>	List<Future<?>> blockers = new ArrayList<>();
750	>	List<Future<?>> periodics = new ArrayList<>();
751	>	List<Future<?>> delayeds = new ArrayList<>();
752	>	for (int i = 0; i < poolSize; i++)
753	>	blockers.add(p.submit(task));
754	>	assertTrue(poolBlocked.await(LONG_DELAY_MS, MILLISECONDS));
755	>
756	>	periodics.add(p.scheduleAtFixedRate(countDowner(periodicLatch1),
757	>	1, 1, MILLISECONDS));
758	>	periodics.add(p.scheduleWithFixedDelay(countDowner(periodicLatch2),
759	>	1, 1, MILLISECONDS));
760	>	delayeds.add(p.schedule(task, 1, MILLISECONDS));
761	>
762	>	assertTrue(p.getQueue().containsAll(periodics));
763	>	assertTrue(p.getQueue().containsAll(delayeds));
764	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
765	>	assertTrue(p.isShutdown());
766	>	assertFalse(p.isTerminated());
767	>	for (Future<?> periodic : periodics) {
768	>	assertTrue(effectivePeriodicPolicy ^ periodic.isCancelled());
769	>	assertTrue(effectivePeriodicPolicy ^ periodic.isDone());
770	>	}
771	>	for (Future<?> delayed : delayeds) {
772	>	assertTrue(effectiveDelayedPolicy ^ delayed.isCancelled());
773	>	assertTrue(effectiveDelayedPolicy ^ delayed.isDone());
774	>	}
775	>	if (testImplementationDetails) {
776	>	assertEquals(effectivePeriodicPolicy,
777	>	p.getQueue().containsAll(periodics));
778	>	assertEquals(effectiveDelayedPolicy,
779	>	p.getQueue().containsAll(delayeds));
780	>	}
781	>	// Release all pool threads
782	>	unblock.countDown();
783	>
784	>	for (Future<?> delayed : delayeds) {
785	>	if (effectiveDelayedPolicy) {
786	>	assertNull(delayed.get());
787	>	}
788	>	}
789	>	if (effectivePeriodicPolicy) {
790	>	assertTrue(periodicLatch1.await(LONG_DELAY_MS, MILLISECONDS));
791	>	assertTrue(periodicLatch2.await(LONG_DELAY_MS, MILLISECONDS));
792	>	for (Future<?> periodic : periodics) {
793	>	assertTrue(periodic.cancel(false));
794	>	assertTrue(periodic.isCancelled());
795	>	assertTrue(periodic.isDone());
796	>	}
797	>	}
798	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
799	>	assertTrue(p.isTerminated());
800	>	assertEquals(2 + (effectiveDelayedPolicy ? 1 : 0), ran.get());
801	>	}}
802	>
803	>	/**
804	>	* completed submit of callable returns result
805	>	*/
806	>	public void testSubmitCallable() throws Exception {
807	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
808	>	try (PoolCleaner cleaner = cleaner(e)) {
809	>	Future<String> future = e.submit(new StringTask());
810	>	String result = future.get();
811	>	assertSame(TEST_STRING, result);
812	>	}
813	>	}
814	>
815	>	/**
816	>	* completed submit of runnable returns successfully
817	>	*/
818	>	public void testSubmitRunnable() throws Exception {
819	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
820	>	try (PoolCleaner cleaner = cleaner(e)) {
821	>	Future<?> future = e.submit(new NoOpRunnable());
822	>	future.get();
823	>	assertTrue(future.isDone());
824	>	}
825	>	}
826	>
827	>	/**
828	>	* completed submit of (runnable, result) returns result
829	>	*/
830	>	public void testSubmitRunnable2() throws Exception {
831	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
832	>	try (PoolCleaner cleaner = cleaner(e)) {
833	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
834	>	String result = future.get();
835	>	assertSame(TEST_STRING, result);
836	>	}
837	>	}
838	>
839	>	/**
840	>	* invokeAny(null) throws NPE
841	>	*/
842	>	public void testInvokeAny1() throws Exception {
843	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
844	>	try (PoolCleaner cleaner = cleaner(e)) {
845	>	try {
846	>	e.invokeAny(null);
847	>	shouldThrow();
848	>	} catch (NullPointerException success) {}
849	>	}
850	>	}
851	>
852	>	/**
853	>	* invokeAny(empty collection) throws IAE
854	>	*/
855	>	public void testInvokeAny2() throws Exception {
856	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
857	>	try (PoolCleaner cleaner = cleaner(e)) {
858	>	try {
859	>	e.invokeAny(new ArrayList<Callable<String>>());
860	>	shouldThrow();
861	>	} catch (IllegalArgumentException success) {}
862	>	}
863	>	}
864	>
865	>	/**
866	>	* invokeAny(c) throws NPE if c has null elements
867	>	*/
868	>	public void testInvokeAny3() throws Exception {
869	>	CountDownLatch latch = new CountDownLatch(1);
870	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
871	>	try (PoolCleaner cleaner = cleaner(e)) {
872	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
873	>	l.add(latchAwaitingStringTask(latch));
874	>	l.add(null);
875	>	try {
876	>	e.invokeAny(l);
877	>	shouldThrow();
878	>	} catch (NullPointerException success) {}
879	>	latch.countDown();
880	>	}
881	>	}
882	>
883	>	/**
884	>	* invokeAny(c) throws ExecutionException if no task completes
885	>	*/
886	>	public void testInvokeAny4() throws Exception {
887	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
888	>	try (PoolCleaner cleaner = cleaner(e)) {
889	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
890	>	l.add(new NPETask());
891	>	try {
892	>	e.invokeAny(l);
893	>	shouldThrow();
894	>	} catch (ExecutionException success) {
895	>	assertTrue(success.getCause() instanceof NullPointerException);
896	>	}
897	>	}
898	>	}
899	>
900	>	/**
901	>	* invokeAny(c) returns result of some task
902	>	*/
903	>	public void testInvokeAny5() throws Exception {
904	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
905	>	try (PoolCleaner cleaner = cleaner(e)) {
906	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
907	>	l.add(new StringTask());
908	>	l.add(new StringTask());
909	>	String result = e.invokeAny(l);
910	>	assertSame(TEST_STRING, result);
911	>	}
912	>	}
913	>
914	>	/**
915	>	* invokeAll(null) throws NPE
916	>	*/
917	>	public void testInvokeAll1() throws Exception {
918	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
919	>	try (PoolCleaner cleaner = cleaner(e)) {
920	>	try {
921	>	e.invokeAll(null);
922	>	shouldThrow();
923	>	} catch (NullPointerException success) {}
924	>	}
925	>	}
926	>
927	>	/**
928	>	* invokeAll(empty collection) returns empty collection
929	>	*/
930	>	public void testInvokeAll2() throws Exception {
931	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
932	>	try (PoolCleaner cleaner = cleaner(e)) {
933	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
934	>	assertTrue(r.isEmpty());
935	>	}
936	>	}
937	>
938	>	/**
939	>	* invokeAll(c) throws NPE if c has null elements
940	>	*/
941	>	public void testInvokeAll3() throws Exception {
942	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
943	>	try (PoolCleaner cleaner = cleaner(e)) {
944	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
945	>	l.add(new StringTask());
946	>	l.add(null);
947	>	try {
948	>	e.invokeAll(l);
949	>	shouldThrow();
950	>	} catch (NullPointerException success) {}
951	>	}
952	>	}
953	>
954	>	/**
955	>	* get of invokeAll(c) throws exception on failed task
956	>	*/
957	>	public void testInvokeAll4() throws Exception {
958	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
959	>	try (PoolCleaner cleaner = cleaner(e)) {
960	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
961	>	l.add(new NPETask());
962	>	List<Future<String>> futures = e.invokeAll(l);
963	>	assertEquals(1, futures.size());
964	>	try {
965	>	futures.get(0).get();
966	>	shouldThrow();
967	>	} catch (ExecutionException success) {
968	>	assertTrue(success.getCause() instanceof NullPointerException);
969	>	}
970	>	}
971	>	}
972	>
973	>	/**
974	>	* invokeAll(c) returns results of all completed tasks
975	>	*/
976	>	public void testInvokeAll5() throws Exception {
977	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
978	>	try (PoolCleaner cleaner = cleaner(e)) {
979	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
980	>	l.add(new StringTask());
981	>	l.add(new StringTask());
982	>	List<Future<String>> futures = e.invokeAll(l);
983	>	assertEquals(2, futures.size());
984	>	for (Future<String> future : futures)
985	>	assertSame(TEST_STRING, future.get());
986	>	}
987	>	}
988	>
989	>	/**
990	>	* timed invokeAny(null) throws NPE
991	>	*/
992	>	public void testTimedInvokeAny1() throws Exception {
993	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
994	>	try (PoolCleaner cleaner = cleaner(e)) {
995	>	try {
996	>	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
997	>	shouldThrow();
998	>	} catch (NullPointerException success) {}
999	>	}
1000	>	}
1001	>
1002	>	/**
1003	>	* timed invokeAny(,,null) throws NPE
1004	>	*/
1005	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1006	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1007	>	try (PoolCleaner cleaner = cleaner(e)) {
1008	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1009	>	l.add(new StringTask());
1010	>	try {
1011	>	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1012	>	shouldThrow();
1013	>	} catch (NullPointerException success) {}
1014	>	}
1015	>	}
1016	>
1017	>	/**
1018	>	* timed invokeAny(empty collection) throws IAE
1019	>	*/
1020	>	public void testTimedInvokeAny2() throws Exception {
1021	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1022	>	try (PoolCleaner cleaner = cleaner(e)) {
1023	>	try {
1024	>	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1025	>	shouldThrow();
1026	>	} catch (IllegalArgumentException success) {}
1027	>	}
1028	>	}
1029	>
1030	>	/**
1031	>	* timed invokeAny(c) throws NPE if c has null elements
1032	>	*/
1033	>	public void testTimedInvokeAny3() throws Exception {
1034	>	CountDownLatch latch = new CountDownLatch(1);
1035	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1036	>	try (PoolCleaner cleaner = cleaner(e)) {
1037	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1038	>	l.add(latchAwaitingStringTask(latch));
1039	>	l.add(null);
1040	>	try {
1041	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1042	>	shouldThrow();
1043	>	} catch (NullPointerException success) {}
1044	>	latch.countDown();
1045	>	}
1046	>	}
1047	>
1048	>	/**
1049	>	* timed invokeAny(c) throws ExecutionException if no task completes
1050	>	*/
1051	>	public void testTimedInvokeAny4() throws Exception {
1052	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1053	>	try (PoolCleaner cleaner = cleaner(e)) {
1054	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1055	>	l.add(new NPETask());
1056	>	try {
1057	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1058	>	shouldThrow();
1059	>	} catch (ExecutionException success) {
1060	>	assertTrue(success.getCause() instanceof NullPointerException);
1061	>	}
1062	>	}
1063	>	}
1064	>
1065	>	/**
1066	>	* timed invokeAny(c) returns result of some task
1067	>	*/
1068	>	public void testTimedInvokeAny5() throws Exception {
1069	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1070	>	try (PoolCleaner cleaner = cleaner(e)) {
1071	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1072	>	l.add(new StringTask());
1073	>	l.add(new StringTask());
1074	>	String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1075	>	assertSame(TEST_STRING, result);
1076	>	}
1077	>	}
1078	>
1079	>	/**
1080	>	* timed invokeAll(null) throws NPE
1081	>	*/
1082	>	public void testTimedInvokeAll1() throws Exception {
1083	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1084	>	try (PoolCleaner cleaner = cleaner(e)) {
1085	>	try {
1086	>	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1087	>	shouldThrow();
1088	>	} catch (NullPointerException success) {}
1089	>	}
1090	>	}
1091	>
1092	>	/**
1093	>	* timed invokeAll(,,null) throws NPE
1094	>	*/
1095	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1096	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1097	>	try (PoolCleaner cleaner = cleaner(e)) {
1098	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1099	>	l.add(new StringTask());
1100	>	try {
1101	>	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1102	>	shouldThrow();
1103	>	} catch (NullPointerException success) {}
1104	>	}
1105	>	}
1106	>
1107	>	/**
1108	>	* timed invokeAll(empty collection) returns empty collection
1109	>	*/
1110	>	public void testTimedInvokeAll2() throws Exception {
1111	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1112	>	try (PoolCleaner cleaner = cleaner(e)) {
1113	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(),
1114	>	MEDIUM_DELAY_MS, MILLISECONDS);
1115	>	assertTrue(r.isEmpty());
1116	>	}
1117	>	}
1118	>
1119	>	/**
1120	>	* timed invokeAll(c) throws NPE if c has null elements
1121	>	*/
1122	>	public void testTimedInvokeAll3() throws Exception {
1123	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1124	>	try (PoolCleaner cleaner = cleaner(e)) {
1125	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1126	>	l.add(new StringTask());
1127	>	l.add(null);
1128	>	try {
1129	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1130	>	shouldThrow();
1131	>	} catch (NullPointerException success) {}
1132	>	}
1133	>	}
1134	>
1135	>	/**
1136	>	* get of element of invokeAll(c) throws exception on failed task
1137	>	*/
1138	>	public void testTimedInvokeAll4() throws Exception {
1139	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1140	>	try (PoolCleaner cleaner = cleaner(e)) {
1141	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1142	>	l.add(new NPETask());
1143	>	List<Future<String>> futures =
1144	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1145	>	assertEquals(1, futures.size());
1146	>	try {
1147	>	futures.get(0).get();
1148	>	shouldThrow();
1149	>	} catch (ExecutionException success) {
1150	>	assertTrue(success.getCause() instanceof NullPointerException);
1151	>	}
1152	>	}
1153	>	}
1154	>
1155	>	/**
1156	>	* timed invokeAll(c) returns results of all completed tasks
1157	>	*/
1158	>	public void testTimedInvokeAll5() throws Exception {
1159	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1160	>	try (PoolCleaner cleaner = cleaner(e)) {
1161	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1162	>	l.add(new StringTask());
1163	>	l.add(new StringTask());
1164	>	List<Future<String>> futures =
1165	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1166	>	assertEquals(2, futures.size());
1167	>	for (Future<String> future : futures)
1168	>	assertSame(TEST_STRING, future.get());
1169	>	}
1170	>	}
1171	>
1172	>	/**
1173	>	* timed invokeAll(c) cancels tasks not completed by timeout
1174	>	*/
1175	>	public void testTimedInvokeAll6() throws Exception {
1176	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1177	>	try (PoolCleaner cleaner = cleaner(e)) {
1178	>	for (long timeout = timeoutMillis();;) {
1179	>	List<Callable<String>> tasks = new ArrayList<>();
1180	>	tasks.add(new StringTask("0"));
1181	>	tasks.add(Executors.callable(new LongPossiblyInterruptedRunnable(), TEST_STRING));
1182	>	tasks.add(new StringTask("2"));
1183	>	long startTime = System.nanoTime();
1184	>	List<Future<String>> futures =
1185	>	e.invokeAll(tasks, timeout, MILLISECONDS);
1186	>	assertEquals(tasks.size(), futures.size());
1187	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1188	>	for (Future future : futures)
1189	>	assertTrue(future.isDone());
1190	>	assertTrue(futures.get(1).isCancelled());
1191	>	try {
1192	>	assertEquals("0", futures.get(0).get());
1193	>	assertEquals("2", futures.get(2).get());
1194	>	break;
1195	>	} catch (CancellationException retryWithLongerTimeout) {
1196	>	timeout *= 2;
1197	>	if (timeout >= LONG_DELAY_MS / 2)
1198	>	fail("expected exactly one task to be cancelled");
1199	>	}
1200	>	}
1201	>	}
1202		}
1203
1204		}

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