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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 1.65 by jsr166, Mon Oct 5 21:42:48 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	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
613	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
614	>	for (int i = 0; i < tasks.length; i++)
615	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
616	>	LONG_DELAY_MS, MILLISECONDS);
617	>	try {
618	>	int max = tasks.length;
619	>	if (tasks[4].cancel(true)) --max;
620	>	if (tasks[3].cancel(true)) --max;
621	>	// There must eventually be an interference-free point at
622	>	// which purge will not fail. (At worst, when queue is empty.)
623	>	long startTime = System.nanoTime();
624	>	do {
625	>	p.purge();
626	>	long count = p.getTaskCount();
627	>	if (count == max)
628	>	return;
629	>	} while (millisElapsedSince(startTime) < MEDIUM_DELAY_MS);
630	>	fail("Purge failed to remove cancelled tasks");
631	>	} finally {
632	>	for (ScheduledFuture task : tasks)
633	>	task.cancel(true);
634	>	joinPool(p);
635	>	}
636		}
637
638	<	private static long SHORT_DELAY_MS = 100;
639	<	private static long MEDIUM_DELAY_MS = 1000;
640	<	private static long LONG_DELAY_MS = 10000;
641	<
642	<	static class MyRunnable implements Runnable {
643	<	volatile boolean waiting = true;
644	<	volatile boolean done = false;
645	<	public void run(){
646	<	try{
647	<	Thread.sleep(MEDIUM_DELAY_MS);
648	<	waiting = false;
649	<	done = true;
650	<	} catch(Exception e){}
651	<	}
652	<	}
653	<
654	<	static class MyCallable implements Callable {
655	<	volatile boolean waiting = true;
656	<	volatile boolean done = false;
657	<	public Object call(){
658	<	try{
659	<	Thread.sleep(MEDIUM_DELAY_MS);
660	<	waiting = false;
661	<	done = true;
662	<	}catch(Exception e){}
663	<	return Boolean.TRUE;
664	<	}
665	<	}
666	<
667	<	/**
668	<	*  Test to verify execute successfully runs the given Runnable
669	<	*/
670	<	public void testExecute(){
671	<	try{
672	<	MyRunnable runnable =new MyRunnable();
673	<	ScheduledExecutor one = new ScheduledExecutor(1);
674	<	one.execute(runnable);
675	<	Thread.sleep(100);
676	<	assertTrue(runnable.waiting);
677	<	one.shutdown();
678	<	// make sure the Runnable has time to complete
679	<	try{Thread.sleep(1010);}catch(InterruptedException e){}
680	<	assertFalse(runnable.waiting);
681	<	assertTrue(runnable.done);
682	<	one.shutdown();
683	<	}
684	<	catch(Exception e){
685	<	fail("unexpected exception");
686	<	}
687	<	}
688	<
689	<	/**
690	<	*  Test to verify schedule successfully runs the given Callable.
691	<	*  The waiting flag shows that the Callable is not started until
692	<	*  immediately.
693	<	*/
694	<	public void testSchedule1(){
695	<	try{
696	<	MyCallable callable = new MyCallable();
697	<	ScheduledExecutor one = new ScheduledExecutor(1);
698	<	Future f = one.schedule(callable, 500, TimeUnit.MILLISECONDS);
699	<	//      Thread.sleep(505);
700	<	assertTrue(callable.waiting);
701	<	Thread.sleep(2000);
702	<	assertTrue(callable.done);
703	<	assertEquals(Boolean.TRUE, f.get());
704	<	one.shutdown();
705	<	}catch(RejectedExecutionException e){}
706	<	catch(Exception e){}
707	<	}
708	<
709	<	/**
710	<	*  Another version of schedule, only using Runnable instead of Callable
711	<	*/
712	<	public void testSchedule3(){
713	<	try{
714	<	MyRunnable runnable = new MyRunnable();
715	<	ScheduledExecutor one = new ScheduledExecutor(1);
716	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
717	<	Thread.sleep(50);
718	<	assertTrue(runnable.waiting);
719	<	Thread.sleep(2000);
720	<	assertTrue(runnable.done);
721	<	one.shutdown();
722	<	} catch(Exception e){
723	<	fail("unexpected exception");
724	<	}
725	<	}
726	<
727	<	/**
728	<	*  The final version of schedule, using both long, TimeUnit and Runnable
729	<	*/
730	<	public void testSchedule4(){
731	<	try{
732	<	MyRunnable runnable = new MyRunnable();
733	<	ScheduledExecutor one = new ScheduledExecutor(1);
734	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
735	<	//      Thread.sleep(505);
736	<	assertTrue(runnable.waiting);
737	<	Thread.sleep(2000);
738	<	assertTrue(runnable.done);
739	<	one.shutdown();
740	<	} catch(Exception e){
741	<	fail("unexpected exception");
742	<	}
743	<	}
744	<
745	<
746	<	// exception tests
747	<
748	<	/**
749	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
750	<	*  This occurs on an attempt to schedule a task on a shutdown executor
751	<	*/
752	<	public void testSchedule1_RejectedExecutionException(){
753	<	try{
754	<	ScheduledExecutor se = new ScheduledExecutor(1);
755	<	se.shutdown();
756	<	se.schedule(new Runnable(){
757	<	public void run(){}
758	<	}, 10000, TimeUnit.MILLISECONDS);
759	<	fail("shoud throw");
760	<	}catch(RejectedExecutionException e){}
761	<	}
762	<
763	<	/**
764	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
765	<	*  This occurs on an attempt to schedule a task on a shutdown executor
766	<	*/
767	<	public void testSchedule2_RejectedExecutionException(){
768	<	try{
769	<	ScheduledExecutor se = new ScheduledExecutor(1);
770	<	se.shutdown();
771	<	se.schedule(new Callable(){
772	<	public Object call(){
773	<	return Boolean.TRUE;
774	<	}
775	<	}, (long)100, TimeUnit.SECONDS);
776	<	fail("should throw");
777	<	}catch(RejectedExecutionException e){}
778	<	}
779	<
780	<	/**
781	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
782	<	*  This occurs on an attempt to schedule a task on a shutdown executor
783	<	*/
784	<	public void testSchedule3_RejectedExecutionException(){
785	<	try{
786	<	ScheduledExecutor se = new ScheduledExecutor(1);
787	<	se.shutdown();
788	<	se.schedule(new Callable(){
789	<	public Object call(){
790	<	return Boolean.TRUE;
791	<	}
792	<	},  10000, TimeUnit.MILLISECONDS);
793	<	fail("should throw");
794	<	}catch(RejectedExecutionException e){}
795	<	}
796	<
797	<	/**
798	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
799	<	*  RejectedExecutionException.
800	<	*  This occurs on an attempt to schedule a task on a shutdown executor
801	<	*/
802	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
803	<	try{
804	<	ScheduledExecutor se = new ScheduledExecutor(1);
805	<	se.shutdown();
806	<	se.scheduleAtFixedRate(new Runnable(){
807	<	public void run(){}
808	<	}, 100, 100, TimeUnit.SECONDS);
809	<	fail("should throw");
810	<	}catch(RejectedExecutionException e){}
811	<	}
812	<
813	<	/**
814	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
815	<	*  RejectedExecutionException.
816	<	*  This occurs on an attempt to schedule a task on a shutdown executor
817	<	*/
818	<	public void testScheduleAtFixedRate2_RejectedExecutionException(){
819	<	try{
820	<	ScheduledExecutor se = new ScheduledExecutor(1);
821	<	se.shutdown();
822	<	se.scheduleAtFixedRate(new Runnable(){
823	<	public void run(){}
824	<	},  1, 100, TimeUnit.SECONDS);
825	<	fail("should throw");
826	<	}catch(RejectedExecutionException e){}
827	<	}
828	<
829	<	/**
830	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
831	<	*  RejectedExecutionException.
832	<	*  This occurs on an attempt to schedule a task on a shutdown executor
833	<	*/
834	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
835	<	try{
836	<	ScheduledExecutor se = new ScheduledExecutor(1);
837	<	se.shutdown();
838	<	se.scheduleWithFixedDelay(new Runnable(){
839	<	public void run(){}
840	<	}, 100, 100, TimeUnit.SECONDS);
841	<	fail("should throw");
842	<	}catch(RejectedExecutionException e){}
843	<	}
844	<
845	<	/**
846	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
847	<	*  RejectedExecutionException.
848	<	*  This occurs on an attempt to schedule a task on a shutdown executor
849	<	*/
850	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
851	<	try{
852	<	ScheduledExecutor se = new ScheduledExecutor(1);
853	<	se.shutdown();
854	<	se.scheduleWithFixedDelay(new Runnable(){
855	<	public void run(){}
856	<	},  1, 100, TimeUnit.SECONDS);
857	<	fail("should throw");
858	<	}catch(RejectedExecutionException e){}
859	<	}
860	<
861	<	/**
862	<	*  Test to verify execute throws RejectedExecutionException
863	<	*  This occurs on an attempt to schedule a task on a shutdown executor
864	<	*/
865	<	public void testExecute_RejectedExecutionException(){
866	<	try{
867	<	ScheduledExecutor se = new ScheduledExecutor(1);
868	<	se.shutdown();
869	<	se.execute(new Runnable(){
870	<	public void run(){}
871	<	});
872	<	fail("should throw");
873	<	}catch(RejectedExecutionException e){}
638	>	/**
639	>	* shutdownNow returns a list containing tasks that were not run,
640	>	* and those tasks are drained from the queue
641	>	*/
642	>	public void testShutdownNow() throws InterruptedException {
643	>	final int poolSize = 2;
644	>	final int count = 5;
645	>	final AtomicInteger ran = new AtomicInteger(0);
646	>	final ScheduledThreadPoolExecutor p =
647	>	new ScheduledThreadPoolExecutor(poolSize);
648	>	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
649	>	Runnable waiter = new CheckedRunnable() { public void realRun() {
650	>	threadsStarted.countDown();
651	>	try {
652	>	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
653	>	} catch (InterruptedException success) {}
654	>	ran.getAndIncrement();
655	>	}};
656	>	for (int i = 0; i < count; i++)
657	>	p.execute(waiter);
658	>	assertTrue(threadsStarted.await(LONG_DELAY_MS, MILLISECONDS));
659	>	assertEquals(poolSize, p.getActiveCount());
660	>	assertEquals(0, p.getCompletedTaskCount());
661	>	final List<Runnable> queuedTasks;
662	>	try {
663	>	queuedTasks = p.shutdownNow();
664	>	} catch (SecurityException ok) {
665	>	return; // Allowed in case test doesn't have privs
666	>	}
667	>	assertTrue(p.isShutdown());
668	>	assertTrue(p.getQueue().isEmpty());
669	>	assertEquals(count - poolSize, queuedTasks.size());
670	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
671	>	assertTrue(p.isTerminated());
672	>	assertEquals(poolSize, ran.get());
673	>	assertEquals(poolSize, p.getCompletedTaskCount());
674	>	}
675	>
676	>	/**
677	>	* shutdownNow returns a list containing tasks that were not run,
678	>	* and those tasks are drained from the queue
679	>	*/
680	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
681	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
682	>	List<ScheduledFuture> tasks = new ArrayList<>();
683	>	for (int i = 0; i < 3; i++) {
684	>	Runnable r = new NoOpRunnable();
685	>	tasks.add(p.schedule(r, 9, SECONDS));
686	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
687	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
688	>	}
689	>	if (testImplementationDetails)
690	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
691	>	final List<Runnable> queuedTasks;
692	>	try {
693	>	queuedTasks = p.shutdownNow();
694	>	} catch (SecurityException ok) {
695	>	return; // Allowed in case test doesn't have privs
696	>	}
697	>	assertTrue(p.isShutdown());
698	>	assertTrue(p.getQueue().isEmpty());
699	>	if (testImplementationDetails)
700	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
701	>	assertEquals(tasks.size(), queuedTasks.size());
702	>	for (ScheduledFuture task : tasks) {
703	>	assertFalse(task.isDone());
704	>	assertFalse(task.isCancelled());
705	>	}
706	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
707	>	assertTrue(p.isTerminated());
708	>	}
709	>
710	>	/**
711	>	* By default, periodic tasks are cancelled at shutdown.
712	>	* By default, delayed tasks keep running after shutdown.
713	>	* Check that changing the default values work:
714	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
715	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
716	>	*/
717	>	public void testShutdown_cancellation() throws Exception {
718	>	Boolean[] allBooleans = { null, Boolean.FALSE, Boolean.TRUE };
719	>	for (Boolean policy : allBooleans)
720	>	{
721	>	final int poolSize = 2;
722	>	final ScheduledThreadPoolExecutor p
723	>	= new ScheduledThreadPoolExecutor(poolSize);
724	>	final boolean effectiveDelayedPolicy = (policy != Boolean.FALSE);
725	>	final boolean effectivePeriodicPolicy = (policy == Boolean.TRUE);
726	>	final boolean effectiveRemovePolicy = (policy == Boolean.TRUE);
727	>	if (policy != null) {
728	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(policy);
729	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(policy);
730	>	p.setRemoveOnCancelPolicy(policy);
731	>	}
732	>	assertEquals(effectiveDelayedPolicy,
733	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
734	>	assertEquals(effectivePeriodicPolicy,
735	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
736	>	assertEquals(effectiveRemovePolicy,
737	>	p.getRemoveOnCancelPolicy());
738	>	// Strategy: Wedge the pool with poolSize "blocker" threads
739	>	final AtomicInteger ran = new AtomicInteger(0);
740	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
741	>	final CountDownLatch unblock = new CountDownLatch(1);
742	>	final CountDownLatch periodicLatch1 = new CountDownLatch(2);
743	>	final CountDownLatch periodicLatch2 = new CountDownLatch(2);
744	>	Runnable task = new CheckedRunnable() { public void realRun()
745	>	throws InterruptedException {
746	>	poolBlocked.countDown();
747	>	assertTrue(unblock.await(LONG_DELAY_MS, MILLISECONDS));
748	>	ran.getAndIncrement();
749	>	}};
750	>	List<Future<?>> blockers = new ArrayList<>();
751	>	List<Future<?>> periodics = new ArrayList<>();
752	>	List<Future<?>> delayeds = new ArrayList<>();
753	>	for (int i = 0; i < poolSize; i++)
754	>	blockers.add(p.submit(task));
755	>	assertTrue(poolBlocked.await(LONG_DELAY_MS, MILLISECONDS));
756	>
757	>	periodics.add(p.scheduleAtFixedRate(countDowner(periodicLatch1),
758	>	1, 1, MILLISECONDS));
759	>	periodics.add(p.scheduleWithFixedDelay(countDowner(periodicLatch2),
760	>	1, 1, MILLISECONDS));
761	>	delayeds.add(p.schedule(task, 1, MILLISECONDS));
762	>
763	>	assertTrue(p.getQueue().containsAll(periodics));
764	>	assertTrue(p.getQueue().containsAll(delayeds));
765	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
766	>	assertTrue(p.isShutdown());
767	>	assertFalse(p.isTerminated());
768	>	for (Future<?> periodic : periodics) {
769	>	assertTrue(effectivePeriodicPolicy ^ periodic.isCancelled());
770	>	assertTrue(effectivePeriodicPolicy ^ periodic.isDone());
771	>	}
772	>	for (Future<?> delayed : delayeds) {
773	>	assertTrue(effectiveDelayedPolicy ^ delayed.isCancelled());
774	>	assertTrue(effectiveDelayedPolicy ^ delayed.isDone());
775	>	}
776	>	if (testImplementationDetails) {
777	>	assertEquals(effectivePeriodicPolicy,
778	>	p.getQueue().containsAll(periodics));
779	>	assertEquals(effectiveDelayedPolicy,
780	>	p.getQueue().containsAll(delayeds));
781	>	}
782	>	// Release all pool threads
783	>	unblock.countDown();
784	>
785	>	for (Future<?> delayed : delayeds) {
786	>	if (effectiveDelayedPolicy) {
787	>	assertNull(delayed.get());
788	>	}
789	>	}
790	>	if (effectivePeriodicPolicy) {
791	>	assertTrue(periodicLatch1.await(LONG_DELAY_MS, MILLISECONDS));
792	>	assertTrue(periodicLatch2.await(LONG_DELAY_MS, MILLISECONDS));
793	>	for (Future<?> periodic : periodics) {
794	>	assertTrue(periodic.cancel(false));
795	>	assertTrue(periodic.isCancelled());
796	>	assertTrue(periodic.isDone());
797	>	}
798	>	}
799	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
800	>	assertTrue(p.isTerminated());
801	>	assertEquals(2 + (effectiveDelayedPolicy ? 1 : 0), ran.get());
802	>	}}
803	>
804	>	/**
805	>	* completed submit of callable returns result
806	>	*/
807	>	public void testSubmitCallable() throws Exception {
808	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
809	>	try (PoolCleaner cleaner = cleaner(e)) {
810	>	Future<String> future = e.submit(new StringTask());
811	>	String result = future.get();
812	>	assertSame(TEST_STRING, result);
813	>	}
814	>	}
815	>
816	>	/**
817	>	* completed submit of runnable returns successfully
818	>	*/
819	>	public void testSubmitRunnable() throws Exception {
820	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
821	>	try (PoolCleaner cleaner = cleaner(e)) {
822	>	Future<?> future = e.submit(new NoOpRunnable());
823	>	future.get();
824	>	assertTrue(future.isDone());
825	>	}
826	>	}
827	>
828	>	/**
829	>	* completed submit of (runnable, result) returns result
830	>	*/
831	>	public void testSubmitRunnable2() throws Exception {
832	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
833	>	try (PoolCleaner cleaner = cleaner(e)) {
834	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
835	>	String result = future.get();
836	>	assertSame(TEST_STRING, result);
837	>	}
838	>	}
839	>
840	>	/**
841	>	* invokeAny(null) throws NPE
842	>	*/
843	>	public void testInvokeAny1() throws Exception {
844	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
845	>	try (PoolCleaner cleaner = cleaner(e)) {
846	>	try {
847	>	e.invokeAny(null);
848	>	shouldThrow();
849	>	} catch (NullPointerException success) {}
850	>	}
851	>	}
852	>
853	>	/**
854	>	* invokeAny(empty collection) throws IAE
855	>	*/
856	>	public void testInvokeAny2() throws Exception {
857	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
858	>	try (PoolCleaner cleaner = cleaner(e)) {
859	>	try {
860	>	e.invokeAny(new ArrayList<Callable<String>>());
861	>	shouldThrow();
862	>	} catch (IllegalArgumentException success) {}
863	>	}
864	>	}
865	>
866	>	/**
867	>	* invokeAny(c) throws NPE if c has null elements
868	>	*/
869	>	public void testInvokeAny3() throws Exception {
870	>	CountDownLatch latch = new CountDownLatch(1);
871	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
872	>	try (PoolCleaner cleaner = cleaner(e)) {
873	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
874	>	l.add(latchAwaitingStringTask(latch));
875	>	l.add(null);
876	>	try {
877	>	e.invokeAny(l);
878	>	shouldThrow();
879	>	} catch (NullPointerException success) {}
880	>	latch.countDown();
881	>	}
882	>	}
883	>
884	>	/**
885	>	* invokeAny(c) throws ExecutionException if no task completes
886	>	*/
887	>	public void testInvokeAny4() throws Exception {
888	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
889	>	try (PoolCleaner cleaner = cleaner(e)) {
890	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
891	>	l.add(new NPETask());
892	>	try {
893	>	e.invokeAny(l);
894	>	shouldThrow();
895	>	} catch (ExecutionException success) {
896	>	assertTrue(success.getCause() instanceof NullPointerException);
897	>	}
898	>	}
899	>	}
900	>
901	>	/**
902	>	* invokeAny(c) returns result of some task
903	>	*/
904	>	public void testInvokeAny5() throws Exception {
905	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
906	>	try (PoolCleaner cleaner = cleaner(e)) {
907	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
908	>	l.add(new StringTask());
909	>	l.add(new StringTask());
910	>	String result = e.invokeAny(l);
911	>	assertSame(TEST_STRING, result);
912	>	}
913	>	}
914	>
915	>	/**
916	>	* invokeAll(null) throws NPE
917	>	*/
918	>	public void testInvokeAll1() throws Exception {
919	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
920	>	try (PoolCleaner cleaner = cleaner(e)) {
921	>	try {
922	>	e.invokeAll(null);
923	>	shouldThrow();
924	>	} catch (NullPointerException success) {}
925	>	}
926	>	}
927	>
928	>	/**
929	>	* invokeAll(empty collection) returns empty collection
930	>	*/
931	>	public void testInvokeAll2() throws Exception {
932	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
933	>	try (PoolCleaner cleaner = cleaner(e)) {
934	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
935	>	assertTrue(r.isEmpty());
936	>	}
937	>	}
938	>
939	>	/**
940	>	* invokeAll(c) throws NPE if c has null elements
941	>	*/
942	>	public void testInvokeAll3() throws Exception {
943	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
944	>	try (PoolCleaner cleaner = cleaner(e)) {
945	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
946	>	l.add(new StringTask());
947	>	l.add(null);
948	>	try {
949	>	e.invokeAll(l);
950	>	shouldThrow();
951	>	} catch (NullPointerException success) {}
952	>	}
953	>	}
954	>
955	>	/**
956	>	* get of invokeAll(c) throws exception on failed task
957	>	*/
958	>	public void testInvokeAll4() throws Exception {
959	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
960	>	try (PoolCleaner cleaner = cleaner(e)) {
961	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
962	>	l.add(new NPETask());
963	>	List<Future<String>> futures = e.invokeAll(l);
964	>	assertEquals(1, futures.size());
965	>	try {
966	>	futures.get(0).get();
967	>	shouldThrow();
968	>	} catch (ExecutionException success) {
969	>	assertTrue(success.getCause() instanceof NullPointerException);
970	>	}
971	>	}
972	>	}
973	>
974	>	/**
975	>	* invokeAll(c) returns results of all completed tasks
976	>	*/
977	>	public void testInvokeAll5() throws Exception {
978	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
979	>	try (PoolCleaner cleaner = cleaner(e)) {
980	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
981	>	l.add(new StringTask());
982	>	l.add(new StringTask());
983	>	List<Future<String>> futures = e.invokeAll(l);
984	>	assertEquals(2, futures.size());
985	>	for (Future<String> future : futures)
986	>	assertSame(TEST_STRING, future.get());
987	>	}
988	>	}
989	>
990	>	/**
991	>	* timed invokeAny(null) throws NPE
992	>	*/
993	>	public void testTimedInvokeAny1() throws Exception {
994	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
995	>	try (PoolCleaner cleaner = cleaner(e)) {
996	>	try {
997	>	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
998	>	shouldThrow();
999	>	} catch (NullPointerException success) {}
1000	>	}
1001	>	}
1002	>
1003	>	/**
1004	>	* timed invokeAny(,,null) throws NPE
1005	>	*/
1006	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1007	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1008	>	try (PoolCleaner cleaner = cleaner(e)) {
1009	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1010	>	l.add(new StringTask());
1011	>	try {
1012	>	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1013	>	shouldThrow();
1014	>	} catch (NullPointerException success) {}
1015	>	}
1016	>	}
1017	>
1018	>	/**
1019	>	* timed invokeAny(empty collection) throws IAE
1020	>	*/
1021	>	public void testTimedInvokeAny2() throws Exception {
1022	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1023	>	try (PoolCleaner cleaner = cleaner(e)) {
1024	>	try {
1025	>	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1026	>	shouldThrow();
1027	>	} catch (IllegalArgumentException success) {}
1028	>	}
1029	>	}
1030	>
1031	>	/**
1032	>	* timed invokeAny(c) throws NPE if c has null elements
1033	>	*/
1034	>	public void testTimedInvokeAny3() throws Exception {
1035	>	CountDownLatch latch = new CountDownLatch(1);
1036	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1037	>	try (PoolCleaner cleaner = cleaner(e)) {
1038	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1039	>	l.add(latchAwaitingStringTask(latch));
1040	>	l.add(null);
1041	>	try {
1042	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1043	>	shouldThrow();
1044	>	} catch (NullPointerException success) {}
1045	>	latch.countDown();
1046	>	}
1047	>	}
1048	>
1049	>	/**
1050	>	* timed invokeAny(c) throws ExecutionException if no task completes
1051	>	*/
1052	>	public void testTimedInvokeAny4() throws Exception {
1053	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1054	>	try (PoolCleaner cleaner = cleaner(e)) {
1055	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1056	>	l.add(new NPETask());
1057	>	try {
1058	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1059	>	shouldThrow();
1060	>	} catch (ExecutionException success) {
1061	>	assertTrue(success.getCause() instanceof NullPointerException);
1062	>	}
1063	>	}
1064	>	}
1065	>
1066	>	/**
1067	>	* timed invokeAny(c) returns result of some task
1068	>	*/
1069	>	public void testTimedInvokeAny5() throws Exception {
1070	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1071	>	try (PoolCleaner cleaner = cleaner(e)) {
1072	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1073	>	l.add(new StringTask());
1074	>	l.add(new StringTask());
1075	>	String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1076	>	assertSame(TEST_STRING, result);
1077	>	}
1078	>	}
1079	>
1080	>	/**
1081	>	* timed invokeAll(null) throws NPE
1082	>	*/
1083	>	public void testTimedInvokeAll1() throws Exception {
1084	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1085	>	try (PoolCleaner cleaner = cleaner(e)) {
1086	>	try {
1087	>	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1088	>	shouldThrow();
1089	>	} catch (NullPointerException success) {}
1090	>	}
1091	>	}
1092	>
1093	>	/**
1094	>	* timed invokeAll(,,null) throws NPE
1095	>	*/
1096	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1097	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1098	>	try (PoolCleaner cleaner = cleaner(e)) {
1099	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1100	>	l.add(new StringTask());
1101	>	try {
1102	>	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1103	>	shouldThrow();
1104	>	} catch (NullPointerException success) {}
1105	>	}
1106	>	}
1107	>
1108	>	/**
1109	>	* timed invokeAll(empty collection) returns empty collection
1110	>	*/
1111	>	public void testTimedInvokeAll2() throws Exception {
1112	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1113	>	try (PoolCleaner cleaner = cleaner(e)) {
1114	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(),
1115	>	MEDIUM_DELAY_MS, MILLISECONDS);
1116	>	assertTrue(r.isEmpty());
1117	>	}
1118	>	}
1119	>
1120	>	/**
1121	>	* timed invokeAll(c) throws NPE if c has null elements
1122	>	*/
1123	>	public void testTimedInvokeAll3() throws Exception {
1124	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1125	>	try (PoolCleaner cleaner = cleaner(e)) {
1126	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1127	>	l.add(new StringTask());
1128	>	l.add(null);
1129	>	try {
1130	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1131	>	shouldThrow();
1132	>	} catch (NullPointerException success) {}
1133	>	}
1134	>	}
1135	>
1136	>	/**
1137	>	* get of element of invokeAll(c) throws exception on failed task
1138	>	*/
1139	>	public void testTimedInvokeAll4() throws Exception {
1140	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1141	>	try (PoolCleaner cleaner = cleaner(e)) {
1142	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1143	>	l.add(new NPETask());
1144	>	List<Future<String>> futures =
1145	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1146	>	assertEquals(1, futures.size());
1147	>	try {
1148	>	futures.get(0).get();
1149	>	shouldThrow();
1150	>	} catch (ExecutionException success) {
1151	>	assertTrue(success.getCause() instanceof NullPointerException);
1152	>	}
1153	>	}
1154	>	}
1155	>
1156	>	/**
1157	>	* timed invokeAll(c) returns results of all completed tasks
1158	>	*/
1159	>	public void testTimedInvokeAll5() throws Exception {
1160	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1161	>	try (PoolCleaner cleaner = cleaner(e)) {
1162	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1163	>	l.add(new StringTask());
1164	>	l.add(new StringTask());
1165	>	List<Future<String>> futures =
1166	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1167	>	assertEquals(2, futures.size());
1168	>	for (Future<String> future : futures)
1169	>	assertSame(TEST_STRING, future.get());
1170	>	}
1171	>	}
1172	>
1173	>	/**
1174	>	* timed invokeAll(c) cancels tasks not completed by timeout
1175	>	*/
1176	>	public void testTimedInvokeAll6() throws Exception {
1177	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1178	>	try (PoolCleaner cleaner = cleaner(e)) {
1179	>	for (long timeout = timeoutMillis();;) {
1180	>	List<Callable<String>> tasks = new ArrayList<>();
1181	>	tasks.add(new StringTask("0"));
1182	>	tasks.add(Executors.callable(new LongPossiblyInterruptedRunnable(), TEST_STRING));
1183	>	tasks.add(new StringTask("2"));
1184	>	long startTime = System.nanoTime();
1185	>	List<Future<String>> futures =
1186	>	e.invokeAll(tasks, timeout, MILLISECONDS);
1187	>	assertEquals(tasks.size(), futures.size());
1188	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1189	>	for (Future future : futures)
1190	>	assertTrue(future.isDone());
1191	>	assertTrue(futures.get(1).isCancelled());
1192	>	try {
1193	>	assertEquals("0", futures.get(0).get());
1194	>	assertEquals("2", futures.get(2).get());
1195	>	break;
1196	>	} catch (CancellationException retryWithLongerTimeout) {
1197	>	timeout *= 2;
1198	>	if (timeout >= LONG_DELAY_MS / 2)
1199	>	fail("expected exactly one task to be cancelled");
1200	>	}
1201	>	}
1202	>	}
1203		}
1204
1205		}

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