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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 1.94 by jsr166, Mon May 29 22:44:27 2017 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
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.NANOSECONDS;
11	>	import static java.util.concurrent.TimeUnit.SECONDS;
12
13	+	import java.util.ArrayList;
14	+	import java.util.Collection;
15	+	import java.util.Collections;
16	+	import java.util.HashSet;
17	+	import java.util.List;
18	+	import java.util.concurrent.BlockingQueue;
19	+	import java.util.concurrent.Callable;
20	+	import java.util.concurrent.CancellationException;
21	+	import java.util.concurrent.CountDownLatch;
22	+	import java.util.concurrent.ExecutionException;
23	+	import java.util.concurrent.ExecutorService;
24	+	import java.util.concurrent.Future;
25	+	import java.util.concurrent.RejectedExecutionException;
26	+	import java.util.concurrent.ScheduledFuture;
27	+	import java.util.concurrent.ScheduledThreadPoolExecutor;
28	+	import java.util.concurrent.ThreadFactory;
29	+	import java.util.concurrent.ThreadLocalRandom;
30	+	import java.util.concurrent.ThreadPoolExecutor;
31	+	import java.util.concurrent.atomic.AtomicBoolean;
32	+	import java.util.concurrent.atomic.AtomicInteger;
33	+	import java.util.concurrent.atomic.AtomicLong;
34	+	import java.util.stream.Stream;
35	+
36	+	import junit.framework.Test;
37	+	import junit.framework.TestSuite;
38	+
39	+	public class ScheduledExecutorTest extends JSR166TestCase {
40		public static void main(String[] args) {
41	<	junit.textui.TestRunner.run (suite());
41	>	main(suite(), args);
42		}
19	–
20	–
43		public static Test suite() {
44	<	return new TestSuite(ScheduledExecutorTest.class);
44	>	return new TestSuite(ScheduledExecutorTest.class);
45		}
46
47	<	private static long SHORT_DELAY_MS = 100;
48	<	private static long MEDIUM_DELAY_MS = 1000;
49	<	private static long LONG_DELAY_MS = 10000;
50	<
51	<	static class MyRunnable implements Runnable {
52	<	volatile boolean waiting = true;
53	<	volatile boolean done = false;
54	<	public void run(){
55	<	try{
56	<	Thread.sleep(MEDIUM_DELAY_MS);
57	<	waiting = false;
58	<	done = true;
59	<	} catch(Exception e){}
60	<	}
61	<	}
62	<
63	<	static class MyCallable implements Callable {
64	<	volatile boolean waiting = true;
65	<	volatile boolean done = false;
66	<	public Object call(){
67	<	try{
68	<	Thread.sleep(MEDIUM_DELAY_MS);
69	<	waiting = false;
70	<	done = true;
71	<	}catch(Exception e){}
72	<	return Boolean.TRUE;
73	<	}
74	<	}
75	<
76	<	/**
77	<	*  Test to verify execute successfully runs the given Runnable
78	<	*/
79	<	public void testExecute(){
80	<	try{
81	<	MyRunnable runnable =new MyRunnable();
82	<	ScheduledExecutor one = new ScheduledExecutor(1);
83	<	one.execute(runnable);
84	<	Thread.sleep(100);
85	<	assertTrue(runnable.waiting);
86	<	one.shutdown();
87	<	// make sure the Runnable has time to complete
88	<	try{Thread.sleep(1010);}catch(InterruptedException e){}
89	<	assertFalse(runnable.waiting);
90	<	assertTrue(runnable.done);
91	<	one.shutdown();
92	<	}
93	<	catch(Exception e){
94	<	fail("unexpected exception");
95	<	}
96	<	}
97	<
98	<	/**
99	<	*  Test to verify schedule successfully runs the given Callable.
100	<	*  The waiting flag shows that the Callable is not started until
101	<	*  immediately.
102	<	*/
103	<	public void testSchedule1(){
104	<	try{
105	<	MyCallable callable = new MyCallable();
106	<	ScheduledExecutor one = new ScheduledExecutor(1);
107	<	Future f = one.schedule(callable, 500, TimeUnit.MILLISECONDS);
108	<	//      Thread.sleep(505);
109	<	assertTrue(callable.waiting);
110	<	Thread.sleep(2000);
111	<	assertTrue(callable.done);
112	<	assertEquals(Boolean.TRUE, f.get());
113	<	one.shutdown();
114	<	}catch(RejectedExecutionException e){}
115	<	catch(Exception e){}
116	<	}
117	<
118	<	/**
119	<	*  Another version of schedule, only using Runnable instead of Callable
120	<	*/
121	<	public void testSchedule3(){
100	<	try{
101	<	MyRunnable runnable = new MyRunnable();
102	<	ScheduledExecutor one = new ScheduledExecutor(1);
103	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
104	<	Thread.sleep(50);
105	<	assertTrue(runnable.waiting);
106	<	Thread.sleep(2000);
107	<	assertTrue(runnable.done);
108	<	one.shutdown();
109	<	} catch(Exception e){
110	<	fail("unexpected exception");
111	<	}
112	<	}
113	<
114	<	/**
115	<	*  The final version of schedule, using both long, TimeUnit and Runnable
116	<	*/
117	<	public void testSchedule4(){
118	<	try{
119	<	MyRunnable runnable = new MyRunnable();
120	<	ScheduledExecutor one = new ScheduledExecutor(1);
121	<	one.schedule(runnable, 500, TimeUnit.MILLISECONDS);
122	<	//      Thread.sleep(505);
123	<	assertTrue(runnable.waiting);
124	<	Thread.sleep(2000);
125	<	assertTrue(runnable.done);
126	<	one.shutdown();
127	<	} catch(Exception e){
128	<	fail("unexpected exception");
129	<	}
130	<	}
131	<
132	<
133	<	// exception tests
134	<
135	<	/**
136	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
137	<	*  This occurs on an attempt to schedule a task on a shutdown executor
138	<	*/
139	<	public void testSchedule1_RejectedExecutionException(){
140	<	try{
141	<	ScheduledExecutor se = new ScheduledExecutor(1);
142	<	se.shutdown();
143	<	se.schedule(new Runnable(){
144	<	public void run(){}
145	<	}, 10000, TimeUnit.MILLISECONDS);
146	<	fail("shoud throw");
147	<	}catch(RejectedExecutionException e){}
148	<	}
149	<
150	<	/**
151	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
152	<	*  This occurs on an attempt to schedule a task on a shutdown executor
153	<	*/
154	<	public void testSchedule2_RejectedExecutionException(){
155	<	try{
156	<	ScheduledExecutor se = new ScheduledExecutor(1);
157	<	se.shutdown();
158	<	se.schedule(new Callable(){
159	<	public Object call(){
160	<	return Boolean.TRUE;
161	<	}
162	<	}, (long)100, TimeUnit.SECONDS);
163	<	fail("should throw");
164	<	}catch(RejectedExecutionException e){}
47	>	/**
48	>	* execute successfully executes a runnable
49	>	*/
50	>	public void testExecute() throws InterruptedException {
51	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
52	>	try (PoolCleaner cleaner = cleaner(p)) {
53	>	final CountDownLatch done = new CountDownLatch(1);
54	>	final Runnable task = new CheckedRunnable() {
55	>	public void realRun() { done.countDown(); }};
56	>	p.execute(task);
57	>	await(done);
58	>	}
59	>	}
60	>
61	>	/**
62	>	* delayed schedule of callable successfully executes after delay
63	>	*/
64	>	public void testSchedule1() throws Exception {
65	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
66	>	try (PoolCleaner cleaner = cleaner(p)) {
67	>	final long startTime = System.nanoTime();
68	>	final CountDownLatch done = new CountDownLatch(1);
69	>	Callable task = new CheckedCallable<Boolean>() {
70	>	public Boolean realCall() {
71	>	done.countDown();
72	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
73	>	return Boolean.TRUE;
74	>	}};
75	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
76	>	assertSame(Boolean.TRUE, f.get());
77	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
78	>	assertEquals(0L, done.getCount());
79	>	}
80	>	}
81	>
82	>	/**
83	>	* delayed schedule of runnable successfully executes after delay
84	>	*/
85	>	public void testSchedule3() throws Exception {
86	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
87	>	try (PoolCleaner cleaner = cleaner(p)) {
88	>	final long startTime = System.nanoTime();
89	>	final CountDownLatch done = new CountDownLatch(1);
90	>	Runnable task = new CheckedRunnable() {
91	>	public void realRun() {
92	>	done.countDown();
93	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
94	>	}};
95	>	Future f = p.schedule(task, timeoutMillis(), MILLISECONDS);
96	>	await(done);
97	>	assertNull(f.get(LONG_DELAY_MS, MILLISECONDS));
98	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
99	>	}
100	>	}
101	>
102	>	/**
103	>	* scheduleAtFixedRate executes runnable after given initial delay
104	>	*/
105	>	public void testSchedule4() throws Exception {
106	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
107	>	try (PoolCleaner cleaner = cleaner(p)) {
108	>	final long startTime = System.nanoTime();
109	>	final CountDownLatch done = new CountDownLatch(1);
110	>	Runnable task = new CheckedRunnable() {
111	>	public void realRun() {
112	>	done.countDown();
113	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
114	>	}};
115	>	ScheduledFuture f =
116	>	p.scheduleAtFixedRate(task, timeoutMillis(),
117	>	LONG_DELAY_MS, MILLISECONDS);
118	>	await(done);
119	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
120	>	f.cancel(true);
121	>	}
122		}
123
124		/**
125	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
126	<	*  This occurs on an attempt to schedule a task on a shutdown executor
127	<	*/
128	<	public void testSchedule3_RejectedExecutionException(){
129	<	try{
130	<	ScheduledExecutor se = new ScheduledExecutor(1);
131	<	se.shutdown();
132	<	se.schedule(new Callable(){
133	<	public Object call(){
134	<	return Boolean.TRUE;
125	>	* scheduleWithFixedDelay executes runnable after given initial delay
126	>	*/
127	>	public void testSchedule5() throws Exception {
128	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
129	>	try (PoolCleaner cleaner = cleaner(p)) {
130	>	final long startTime = System.nanoTime();
131	>	final CountDownLatch done = new CountDownLatch(1);
132	>	Runnable task = new CheckedRunnable() {
133	>	public void realRun() {
134	>	done.countDown();
135	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
136	>	}};
137	>	ScheduledFuture f =
138	>	p.scheduleWithFixedDelay(task, timeoutMillis(),
139	>	LONG_DELAY_MS, MILLISECONDS);
140	>	await(done);
141	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
142	>	f.cancel(true);
143	>	}
144	>	}
145	>
146	>	static class RunnableCounter implements Runnable {
147	>	AtomicInteger count = new AtomicInteger(0);
148	>	public void run() { count.getAndIncrement(); }
149	>	}
150	>
151	>	/**
152	>	* scheduleAtFixedRate executes series of tasks at given rate.
153	>	* Eventually, it must hold that:
154	>	*   cycles - 1 <= elapsedMillis/delay < cycles
155	>	*/
156	>	public void testFixedRateSequence() throws InterruptedException {
157	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
158	>	try (PoolCleaner cleaner = cleaner(p)) {
159	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
160	>	final long startTime = System.nanoTime();
161	>	final int cycles = 8;
162	>	final CountDownLatch done = new CountDownLatch(cycles);
163	>	final Runnable task = new CheckedRunnable() {
164	>	public void realRun() { done.countDown(); }};
165	>	final ScheduledFuture periodicTask =
166	>	p.scheduleAtFixedRate(task, 0, delay, MILLISECONDS);
167	>	final int totalDelayMillis = (cycles - 1) * delay;
168	>	await(done, totalDelayMillis + LONG_DELAY_MS);
169	>	periodicTask.cancel(true);
170	>	final long elapsedMillis = millisElapsedSince(startTime);
171	>	assertTrue(elapsedMillis >= totalDelayMillis);
172	>	if (elapsedMillis <= cycles * delay)
173	>	return;
174	>	// else retry with longer delay
175	>	}
176	>	fail("unexpected execution rate");
177	>	}
178	>	}
179	>
180	>	/**
181	>	* scheduleWithFixedDelay executes series of tasks with given period.
182	>	* Eventually, it must hold that each task starts at least delay and at
183	>	* most 2 * delay after the termination of the previous task.
184	>	*/
185	>	public void testFixedDelaySequence() throws InterruptedException {
186	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
187	>	try (PoolCleaner cleaner = cleaner(p)) {
188	>	for (int delay = 1; delay <= LONG_DELAY_MS; delay *= 3) {
189	>	final long startTime = System.nanoTime();
190	>	final AtomicLong previous = new AtomicLong(startTime);
191	>	final AtomicBoolean tryLongerDelay = new AtomicBoolean(false);
192	>	final int cycles = 8;
193	>	final CountDownLatch done = new CountDownLatch(cycles);
194	>	final int d = delay;
195	>	final Runnable task = new CheckedRunnable() {
196	>	public void realRun() {
197	>	long now = System.nanoTime();
198	>	long elapsedMillis
199	>	= NANOSECONDS.toMillis(now - previous.get());
200	>	if (done.getCount() == cycles) { // first execution
201	>	if (elapsedMillis >= d)
202	>	tryLongerDelay.set(true);
203	>	} else {
204	>	assertTrue(elapsedMillis >= d);
205	>	if (elapsedMillis >= 2 * d)
206	>	tryLongerDelay.set(true);
207	>	}
208	>	previous.set(now);
209	>	done.countDown();
210	>	}};
211	>	final ScheduledFuture periodicTask =
212	>	p.scheduleWithFixedDelay(task, 0, delay, MILLISECONDS);
213	>	final int totalDelayMillis = (cycles - 1) * delay;
214	>	await(done, totalDelayMillis + cycles * LONG_DELAY_MS);
215	>	periodicTask.cancel(true);
216	>	final long elapsedMillis = millisElapsedSince(startTime);
217	>	assertTrue(elapsedMillis >= totalDelayMillis);
218	>	if (!tryLongerDelay.get())
219	>	return;
220	>	// else retry with longer delay
221	>	}
222	>	fail("unexpected execution rate");
223	>	}
224	>	}
225	>
226	>	/**
227	>	* execute(null) throws NPE
228	>	*/
229	>	public void testExecuteNull() throws InterruptedException {
230	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
231	>	try (PoolCleaner cleaner = cleaner(p)) {
232	>	try {
233	>	p.execute(null);
234	>	shouldThrow();
235	>	} catch (NullPointerException success) {}
236	>	}
237	>	}
238	>
239	>	/**
240	>	* schedule(null) throws NPE
241	>	*/
242	>	public void testScheduleNull() throws InterruptedException {
243	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
244	>	try (PoolCleaner cleaner = cleaner(p)) {
245	>	try {
246	>	Future f = p.schedule((Callable)null,
247	>	randomTimeout(), randomTimeUnit());
248	>	shouldThrow();
249	>	} catch (NullPointerException success) {}
250	>	}
251	>	}
252	>
253	>	/**
254	>	* execute throws RejectedExecutionException if shutdown
255	>	*/
256	>	public void testSchedule1_RejectedExecutionException() throws InterruptedException {
257	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
258	>	try (PoolCleaner cleaner = cleaner(p)) {
259	>	try {
260	>	p.shutdown();
261	>	p.schedule(new NoOpRunnable(),
262	>	randomTimeout(), randomTimeUnit());
263	>	shouldThrow();
264	>	} catch (RejectedExecutionException success) {
265	>	} catch (SecurityException ok) {}
266	>	}
267	>	}
268	>
269	>	/**
270	>	* schedule throws RejectedExecutionException if shutdown
271	>	*/
272	>	public void testSchedule2_RejectedExecutionException() throws InterruptedException {
273	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
274	>	try (PoolCleaner cleaner = cleaner(p)) {
275	>	try {
276	>	p.shutdown();
277	>	p.schedule(new NoOpCallable(),
278	>	randomTimeout(), randomTimeUnit());
279	>	shouldThrow();
280	>	} catch (RejectedExecutionException success) {
281	>	} catch (SecurityException ok) {}
282	>	}
283	>	}
284	>
285	>	/**
286	>	* schedule callable throws RejectedExecutionException if shutdown
287	>	*/
288	>	public void testSchedule3_RejectedExecutionException() throws InterruptedException {
289	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
290	>	try (PoolCleaner cleaner = cleaner(p)) {
291	>	try {
292	>	p.shutdown();
293	>	p.schedule(new NoOpCallable(),
294	>	randomTimeout(), randomTimeUnit());
295	>	shouldThrow();
296	>	} catch (RejectedExecutionException success) {
297	>	} catch (SecurityException ok) {}
298	>	}
299	>	}
300	>
301	>	/**
302	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
303	>	*/
304	>	public void testScheduleAtFixedRate1_RejectedExecutionException() throws InterruptedException {
305	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
306	>	try (PoolCleaner cleaner = cleaner(p)) {
307	>	try {
308	>	p.shutdown();
309	>	p.scheduleAtFixedRate(new NoOpRunnable(),
310	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
311	>	shouldThrow();
312	>	} catch (RejectedExecutionException success) {
313	>	} catch (SecurityException ok) {}
314	>	}
315	>	}
316	>
317	>	/**
318	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
319	>	*/
320	>	public void testScheduleWithFixedDelay1_RejectedExecutionException() throws InterruptedException {
321	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
322	>	try (PoolCleaner cleaner = cleaner(p)) {
323	>	try {
324	>	p.shutdown();
325	>	p.scheduleWithFixedDelay(new NoOpRunnable(),
326	>	MEDIUM_DELAY_MS, MEDIUM_DELAY_MS, MILLISECONDS);
327	>	shouldThrow();
328	>	} catch (RejectedExecutionException success) {
329	>	} catch (SecurityException ok) {}
330	>	}
331	>	}
332	>
333	>	/**
334	>	* getActiveCount increases but doesn't overestimate, when a
335	>	* thread becomes active
336	>	*/
337	>	public void testGetActiveCount() throws InterruptedException {
338	>	final CountDownLatch done = new CountDownLatch(1);
339	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
340	>	try (PoolCleaner cleaner = cleaner(p, done)) {
341	>	final CountDownLatch threadStarted = new CountDownLatch(1);
342	>	assertEquals(0, p.getActiveCount());
343	>	p.execute(new CheckedRunnable() {
344	>	public void realRun() throws InterruptedException {
345	>	threadStarted.countDown();
346	>	assertEquals(1, p.getActiveCount());
347	>	await(done);
348	>	}});
349	>	await(threadStarted);
350	>	assertEquals(1, p.getActiveCount());
351	>	}
352	>	}
353	>
354	>	/**
355	>	* getCompletedTaskCount increases, but doesn't overestimate,
356	>	* when tasks complete
357	>	*/
358	>	public void testGetCompletedTaskCount() throws InterruptedException {
359	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(2);
360	>	try (PoolCleaner cleaner = cleaner(p)) {
361	>	final CountDownLatch threadStarted = new CountDownLatch(1);
362	>	final CountDownLatch threadProceed = new CountDownLatch(1);
363	>	final CountDownLatch threadDone = new CountDownLatch(1);
364	>	assertEquals(0, p.getCompletedTaskCount());
365	>	p.execute(new CheckedRunnable() {
366	>	public void realRun() throws InterruptedException {
367	>	threadStarted.countDown();
368	>	assertEquals(0, p.getCompletedTaskCount());
369	>	await(threadProceed);
370	>	threadDone.countDown();
371	>	}});
372	>	await(threadStarted);
373	>	assertEquals(0, p.getCompletedTaskCount());
374	>	threadProceed.countDown();
375	>	await(threadDone);
376	>	long startTime = System.nanoTime();
377	>	while (p.getCompletedTaskCount() != 1) {
378	>	if (millisElapsedSince(startTime) > LONG_DELAY_MS)
379	>	fail("timed out");
380	>	Thread.yield();
381	>	}
382	>	}
383	>	}
384	>
385	>	/**
386	>	* getCorePoolSize returns size given in constructor if not otherwise set
387	>	*/
388	>	public void testGetCorePoolSize() throws InterruptedException {
389	>	ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
390	>	try (PoolCleaner cleaner = cleaner(p)) {
391	>	assertEquals(1, p.getCorePoolSize());
392	>	}
393	>	}
394	>
395	>	/**
396	>	* getLargestPoolSize increases, but doesn't overestimate, when
397	>	* multiple threads active
398	>	*/
399	>	public void testGetLargestPoolSize() throws InterruptedException {
400	>	final int THREADS = 3;
401	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(THREADS);
402	>	final CountDownLatch threadsStarted = new CountDownLatch(THREADS);
403	>	final CountDownLatch done = new CountDownLatch(1);
404	>	try (PoolCleaner cleaner = cleaner(p, done)) {
405	>	assertEquals(0, p.getLargestPoolSize());
406	>	for (int i = 0; i < THREADS; i++)
407	>	p.execute(new CheckedRunnable() {
408	>	public void realRun() throws InterruptedException {
409	>	threadsStarted.countDown();
410	>	await(done);
411	>	assertEquals(THREADS, p.getLargestPoolSize());
412	>	}});
413	>	await(threadsStarted);
414	>	assertEquals(THREADS, p.getLargestPoolSize());
415	>	}
416	>	assertEquals(THREADS, p.getLargestPoolSize());
417	>	}
418	>
419	>	/**
420	>	* getPoolSize increases, but doesn't overestimate, when threads
421	>	* become active
422	>	*/
423	>	public void testGetPoolSize() throws InterruptedException {
424	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
425	>	final CountDownLatch threadStarted = new CountDownLatch(1);
426	>	final CountDownLatch done = new CountDownLatch(1);
427	>	try (PoolCleaner cleaner = cleaner(p, done)) {
428	>	assertEquals(0, p.getPoolSize());
429	>	p.execute(new CheckedRunnable() {
430	>	public void realRun() throws InterruptedException {
431	>	threadStarted.countDown();
432	>	assertEquals(1, p.getPoolSize());
433	>	await(done);
434	>	}});
435	>	await(threadStarted);
436	>	assertEquals(1, p.getPoolSize());
437	>	}
438	>	}
439	>
440	>	/**
441	>	* getTaskCount increases, but doesn't overestimate, when tasks
442	>	* submitted
443	>	*/
444	>	public void testGetTaskCount() throws InterruptedException {
445	>	final int TASKS = 3;
446	>	final CountDownLatch done = new CountDownLatch(1);
447	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
448	>	try (PoolCleaner cleaner = cleaner(p, done)) {
449	>	final CountDownLatch threadStarted = new CountDownLatch(1);
450	>	assertEquals(0, p.getTaskCount());
451	>	assertEquals(0, p.getCompletedTaskCount());
452	>	p.execute(new CheckedRunnable() {
453	>	public void realRun() throws InterruptedException {
454	>	threadStarted.countDown();
455	>	await(done);
456	>	}});
457	>	await(threadStarted);
458	>	assertEquals(1, p.getTaskCount());
459	>	assertEquals(0, p.getCompletedTaskCount());
460	>	for (int i = 0; i < TASKS; i++) {
461	>	assertEquals(1 + i, p.getTaskCount());
462	>	p.execute(new CheckedRunnable() {
463	>	public void realRun() throws InterruptedException {
464	>	threadStarted.countDown();
465	>	assertEquals(1 + TASKS, p.getTaskCount());
466	>	await(done);
467	>	}});
468	>	}
469	>	assertEquals(1 + TASKS, p.getTaskCount());
470	>	assertEquals(0, p.getCompletedTaskCount());
471	>	}
472	>	assertEquals(1 + TASKS, p.getTaskCount());
473	>	assertEquals(1 + TASKS, p.getCompletedTaskCount());
474	>	}
475	>
476	>	/**
477	>	* getThreadFactory returns factory in constructor if not set
478	>	*/
479	>	public void testGetThreadFactory() throws InterruptedException {
480	>	final ThreadFactory threadFactory = new SimpleThreadFactory();
481	>	final ScheduledThreadPoolExecutor p =
482	>	new ScheduledThreadPoolExecutor(1, threadFactory);
483	>	try (PoolCleaner cleaner = cleaner(p)) {
484	>	assertSame(threadFactory, p.getThreadFactory());
485	>	}
486	>	}
487	>
488	>	/**
489	>	* setThreadFactory sets the thread factory returned by getThreadFactory
490	>	*/
491	>	public void testSetThreadFactory() throws InterruptedException {
492	>	ThreadFactory threadFactory = new SimpleThreadFactory();
493	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
494	>	try (PoolCleaner cleaner = cleaner(p)) {
495	>	p.setThreadFactory(threadFactory);
496	>	assertSame(threadFactory, p.getThreadFactory());
497	>	}
498	>	}
499	>
500	>	/**
501	>	* setThreadFactory(null) throws NPE
502	>	*/
503	>	public void testSetThreadFactoryNull() throws InterruptedException {
504	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
505	>	try (PoolCleaner cleaner = cleaner(p)) {
506	>	try {
507	>	p.setThreadFactory(null);
508	>	shouldThrow();
509	>	} catch (NullPointerException success) {}
510	>	}
511	>	}
512	>
513	>	/**
514	>	* The default rejected execution handler is AbortPolicy.
515	>	*/
516	>	public void testDefaultRejectedExecutionHandler() {
517	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
518	>	try (PoolCleaner cleaner = cleaner(p)) {
519	>	assertTrue(p.getRejectedExecutionHandler()
520	>	instanceof ThreadPoolExecutor.AbortPolicy);
521	>	}
522	>	}
523	>
524	>	/**
525	>	* isShutdown is false before shutdown, true after
526	>	*/
527	>	public void testIsShutdown() {
528	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
529	>	assertFalse(p.isShutdown());
530	>	try (PoolCleaner cleaner = cleaner(p)) {
531	>	try {
532	>	p.shutdown();
533	>	assertTrue(p.isShutdown());
534	>	} catch (SecurityException ok) {}
535	>	}
536	>	}
537	>
538	>	/**
539	>	* isTerminated is false before termination, true after
540	>	*/
541	>	public void testIsTerminated() throws InterruptedException {
542	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
543	>	try (PoolCleaner cleaner = cleaner(p)) {
544	>	final CountDownLatch threadStarted = new CountDownLatch(1);
545	>	final CountDownLatch done = new CountDownLatch(1);
546	>	assertFalse(p.isTerminated());
547	>	p.execute(new CheckedRunnable() {
548	>	public void realRun() throws InterruptedException {
549	>	assertFalse(p.isTerminated());
550	>	threadStarted.countDown();
551	>	await(done);
552	>	}});
553	>	await(threadStarted);
554	>	assertFalse(p.isTerminating());
555	>	done.countDown();
556	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
557	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
558	>	assertTrue(p.isTerminated());
559	>	}
560	>	}
561	>
562	>	/**
563	>	* isTerminating is not true when running or when terminated
564	>	*/
565	>	public void testIsTerminating() throws InterruptedException {
566	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
567	>	final CountDownLatch threadStarted = new CountDownLatch(1);
568	>	final CountDownLatch done = new CountDownLatch(1);
569	>	try (PoolCleaner cleaner = cleaner(p)) {
570	>	assertFalse(p.isTerminating());
571	>	p.execute(new CheckedRunnable() {
572	>	public void realRun() throws InterruptedException {
573	>	assertFalse(p.isTerminating());
574	>	threadStarted.countDown();
575	>	await(done);
576	>	}});
577	>	await(threadStarted);
578	>	assertFalse(p.isTerminating());
579	>	done.countDown();
580	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
581	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
582	>	assertTrue(p.isTerminated());
583	>	assertFalse(p.isTerminating());
584	>	}
585	>	}
586	>
587	>	/**
588	>	* getQueue returns the work queue, which contains queued tasks
589	>	*/
590	>	public void testGetQueue() throws InterruptedException {
591	>	final CountDownLatch done = new CountDownLatch(1);
592	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
593	>	try (PoolCleaner cleaner = cleaner(p, done)) {
594	>	final CountDownLatch threadStarted = new CountDownLatch(1);
595	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
596	>	for (int i = 0; i < tasks.length; i++) {
597	>	Runnable r = new CheckedRunnable() {
598	>	public void realRun() throws InterruptedException {
599	>	threadStarted.countDown();
600	>	await(done);
601	>	}};
602	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
603	>	}
604	>	await(threadStarted);
605	>	BlockingQueue<Runnable> q = p.getQueue();
606	>	assertTrue(q.contains(tasks[tasks.length - 1]));
607	>	assertFalse(q.contains(tasks[0]));
608	>	}
609	>	}
610	>
611	>	/**
612	>	* remove(task) removes queued task, and fails to remove active task
613	>	*/
614	>	public void testRemove() throws InterruptedException {
615	>	final CountDownLatch done = new CountDownLatch(1);
616	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
617	>	try (PoolCleaner cleaner = cleaner(p, done)) {
618	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
619	>	final CountDownLatch threadStarted = new CountDownLatch(1);
620	>	for (int i = 0; i < tasks.length; i++) {
621	>	Runnable r = new CheckedRunnable() {
622	>	public void realRun() throws InterruptedException {
623	>	threadStarted.countDown();
624	>	await(done);
625	>	}};
626	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
627	>	}
628	>	await(threadStarted);
629	>	BlockingQueue<Runnable> q = p.getQueue();
630	>	assertFalse(p.remove((Runnable)tasks[0]));
631	>	assertTrue(q.contains((Runnable)tasks[4]));
632	>	assertTrue(q.contains((Runnable)tasks[3]));
633	>	assertTrue(p.remove((Runnable)tasks[4]));
634	>	assertFalse(p.remove((Runnable)tasks[4]));
635	>	assertFalse(q.contains((Runnable)tasks[4]));
636	>	assertTrue(q.contains((Runnable)tasks[3]));
637	>	assertTrue(p.remove((Runnable)tasks[3]));
638	>	assertFalse(q.contains((Runnable)tasks[3]));
639	>	}
640	>	}
641	>
642	>	/**
643	>	* purge eventually removes cancelled tasks from the queue
644	>	*/
645	>	public void testPurge() throws InterruptedException {
646	>	final ScheduledFuture[] tasks = new ScheduledFuture[5];
647	>	final Runnable releaser = new Runnable() { public void run() {
648	>	for (ScheduledFuture task : tasks)
649	>	if (task != null) task.cancel(true); }};
650	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
651	>	try (PoolCleaner cleaner = cleaner(p, releaser)) {
652	>	for (int i = 0; i < tasks.length; i++)
653	>	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
654	>	LONG_DELAY_MS, MILLISECONDS);
655	>	int max = tasks.length;
656	>	if (tasks[4].cancel(true)) --max;
657	>	if (tasks[3].cancel(true)) --max;
658	>	// There must eventually be an interference-free point at
659	>	// which purge will not fail. (At worst, when queue is empty.)
660	>	long startTime = System.nanoTime();
661	>	do {
662	>	p.purge();
663	>	long count = p.getTaskCount();
664	>	if (count == max)
665	>	return;
666	>	} while (millisElapsedSince(startTime) < LONG_DELAY_MS);
667	>	fail("Purge failed to remove cancelled tasks");
668	>	}
669	>	}
670	>
671	>	/**
672	>	* shutdownNow returns a list containing tasks that were not run,
673	>	* and those tasks are drained from the queue
674	>	*/
675	>	public void testShutdownNow() throws InterruptedException {
676	>	final int poolSize = 2;
677	>	final int count = 5;
678	>	final AtomicInteger ran = new AtomicInteger(0);
679	>	final ScheduledThreadPoolExecutor p =
680	>	new ScheduledThreadPoolExecutor(poolSize);
681	>	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
682	>	Runnable waiter = new CheckedRunnable() { public void realRun() {
683	>	threadsStarted.countDown();
684	>	try {
685	>	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
686	>	} catch (InterruptedException success) {}
687	>	ran.getAndIncrement();
688	>	}};
689	>	for (int i = 0; i < count; i++)
690	>	p.execute(waiter);
691	>	await(threadsStarted);
692	>	assertEquals(poolSize, p.getActiveCount());
693	>	assertEquals(0, p.getCompletedTaskCount());
694	>	final List<Runnable> queuedTasks;
695	>	try {
696	>	queuedTasks = p.shutdownNow();
697	>	} catch (SecurityException ok) {
698	>	return; // Allowed in case test doesn't have privs
699	>	}
700	>	assertTrue(p.isShutdown());
701	>	assertTrue(p.getQueue().isEmpty());
702	>	assertEquals(count - poolSize, queuedTasks.size());
703	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
704	>	assertTrue(p.isTerminated());
705	>	assertEquals(poolSize, ran.get());
706	>	assertEquals(poolSize, p.getCompletedTaskCount());
707	>	}
708	>
709	>	/**
710	>	* shutdownNow returns a list containing tasks that were not run,
711	>	* and those tasks are drained from the queue
712	>	*/
713	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
714	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
715	>	List<ScheduledFuture> tasks = new ArrayList<>();
716	>	for (int i = 0; i < 3; i++) {
717	>	Runnable r = new NoOpRunnable();
718	>	tasks.add(p.schedule(r, 9, SECONDS));
719	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
720	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
721	>	}
722	>	if (testImplementationDetails)
723	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
724	>	final List<Runnable> queuedTasks;
725	>	try {
726	>	queuedTasks = p.shutdownNow();
727	>	} catch (SecurityException ok) {
728	>	return; // Allowed in case test doesn't have privs
729	>	}
730	>	assertTrue(p.isShutdown());
731	>	assertTrue(p.getQueue().isEmpty());
732	>	if (testImplementationDetails)
733	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
734	>	assertEquals(tasks.size(), queuedTasks.size());
735	>	for (ScheduledFuture task : tasks) {
736	>	assertFalse(task.isDone());
737	>	assertFalse(task.isCancelled());
738	>	}
739	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
740	>	assertTrue(p.isTerminated());
741	>	}
742	>
743	>	/**
744	>	* By default, periodic tasks are cancelled at shutdown.
745	>	* By default, delayed tasks keep running after shutdown.
746	>	* Check that changing the default values work:
747	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
748	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
749	>	*/
750	>	public void testShutdown_cancellation() throws Exception {
751	>	final int poolSize = 4;
752	>	final ScheduledThreadPoolExecutor p
753	>	= new ScheduledThreadPoolExecutor(poolSize);
754	>	final BlockingQueue<Runnable> q = p.getQueue();
755	>	final ThreadLocalRandom rnd = ThreadLocalRandom.current();
756	>	final long delay = rnd.nextInt(2);
757	>	final int rounds = rnd.nextInt(1, 3);
758	>	final boolean effectiveDelayedPolicy;
759	>	final boolean effectivePeriodicPolicy;
760	>	final boolean effectiveRemovePolicy;
761	>
762	>	if (rnd.nextBoolean())
763	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(
764	>	effectiveDelayedPolicy = rnd.nextBoolean());
765	>	else
766	>	effectiveDelayedPolicy = true;
767	>	assertEquals(effectiveDelayedPolicy,
768	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
769	>
770	>	if (rnd.nextBoolean())
771	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(
772	>	effectivePeriodicPolicy = rnd.nextBoolean());
773	>	else
774	>	effectivePeriodicPolicy = false;
775	>	assertEquals(effectivePeriodicPolicy,
776	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
777	>
778	>	if (rnd.nextBoolean())
779	>	p.setRemoveOnCancelPolicy(
780	>	effectiveRemovePolicy = rnd.nextBoolean());
781	>	else
782	>	effectiveRemovePolicy = false;
783	>	assertEquals(effectiveRemovePolicy,
784	>	p.getRemoveOnCancelPolicy());
785	>
786	>	final boolean periodicTasksContinue = effectivePeriodicPolicy && rnd.nextBoolean();
787	>
788	>	// Strategy: Wedge the pool with one wave of "blocker" tasks,
789	>	// then add a second wave that waits in the queue until unblocked.
790	>	final AtomicInteger ran = new AtomicInteger(0);
791	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
792	>	final CountDownLatch unblock = new CountDownLatch(1);
793	>	final RuntimeException exception = new RuntimeException();
794	>
795	>	class Task implements Runnable {
796	>	public void run() {
797	>	try {
798	>	ran.getAndIncrement();
799	>	poolBlocked.countDown();
800	>	await(unblock);
801	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
802	>	}
803	>	}
804	>
805	>	class PeriodicTask extends Task {
806	>	PeriodicTask(int rounds) { this.rounds = rounds; }
807	>	int rounds;
808	>	public void run() {
809	>	if (--rounds == 0) super.run();
810	>	// throw exception to surely terminate this periodic task,
811	>	// but in a separate execution and in a detectable way.
812	>	if (rounds == -1) throw exception;
813	>	}
814	>	}
815	>
816	>	Runnable task = new Task();
817	>
818	>	List<Future<?>> immediates = new ArrayList<>();
819	>	List<Future<?>> delayeds   = new ArrayList<>();
820	>	List<Future<?>> periodics  = new ArrayList<>();
821	>
822	>	immediates.add(p.submit(task));
823	>	delayeds.add(p.schedule(task, delay, MILLISECONDS));
824	>	periodics.add(p.scheduleAtFixedRate(
825	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
826	>	periodics.add(p.scheduleWithFixedDelay(
827	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
828	>
829	>	await(poolBlocked);
830	>
831	>	assertEquals(poolSize, ran.get());
832	>	assertEquals(poolSize, p.getActiveCount());
833	>	assertTrue(q.isEmpty());
834	>
835	>	// Add second wave of tasks.
836	>	immediates.add(p.submit(task));
837	>	delayeds.add(p.schedule(task, effectiveDelayedPolicy ? delay : LONG_DELAY_MS, MILLISECONDS));
838	>	periodics.add(p.scheduleAtFixedRate(
839	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
840	>	periodics.add(p.scheduleWithFixedDelay(
841	>	new PeriodicTask(rounds), delay, 1, MILLISECONDS));
842	>
843	>	assertEquals(poolSize, q.size());
844	>	assertEquals(poolSize, ran.get());
845	>
846	>	immediates.forEach(
847	>	f -> assertTrue(((ScheduledFuture)f).getDelay(NANOSECONDS) <= 0L));
848	>
849	>	Stream.of(immediates, delayeds, periodics).flatMap(c -> c.stream())
850	>	.forEach(f -> assertFalse(f.isDone()));
851	>
852	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
853	>	assertTrue(p.isShutdown());
854	>	assertTrue(p.isTerminating());
855	>	assertFalse(p.isTerminated());
856	>
857	>	if (rnd.nextBoolean())
858	>	assertThrows(
859	>	RejectedExecutionException.class,
860	>	() -> p.submit(task),
861	>	() -> p.schedule(task, 1, SECONDS),
862	>	() -> p.scheduleAtFixedRate(
863	>	new PeriodicTask(1), 1, 1, SECONDS),
864	>	() -> p.scheduleWithFixedDelay(
865	>	new PeriodicTask(2), 1, 1, SECONDS));
866	>
867	>	assertTrue(q.contains(immediates.get(1)));
868	>	assertTrue(!effectiveDelayedPolicy
869	>	^ q.contains(delayeds.get(1)));
870	>	assertTrue(!effectivePeriodicPolicy
871	>	^ q.containsAll(periodics.subList(2, 4)));
872	>
873	>	immediates.forEach(f -> assertFalse(f.isDone()));
874	>
875	>	assertFalse(delayeds.get(0).isDone());
876	>	if (effectiveDelayedPolicy)
877	>	assertFalse(delayeds.get(1).isDone());
878	>	else
879	>	assertTrue(delayeds.get(1).isCancelled());
880	>
881	>	if (effectivePeriodicPolicy)
882	>	periodics.forEach(
883	>	f -> {
884	>	assertFalse(f.isDone());
885	>	if (!periodicTasksContinue) {
886	>	assertTrue(f.cancel(false));
887	>	assertTrue(f.isCancelled());
888	>	}
889	>	});
890	>	else {
891	>	periodics.subList(0, 2).forEach(f -> assertFalse(f.isDone()));
892	>	periodics.subList(2, 4).forEach(f -> assertTrue(f.isCancelled()));
893	>	}
894	>
895	>	unblock.countDown();    // Release all pool threads
896	>
897	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
898	>	assertFalse(p.isTerminating());
899	>	assertTrue(p.isTerminated());
900	>
901	>	assertTrue(q.isEmpty());
902	>
903	>	Stream.of(immediates, delayeds, periodics).flatMap(c -> c.stream())
904	>	.forEach(f -> assertTrue(f.isDone()));
905	>
906	>	for (Future<?> f : immediates) assertNull(f.get());
907	>
908	>	assertNull(delayeds.get(0).get());
909	>	if (effectiveDelayedPolicy)
910	>	assertNull(delayeds.get(1).get());
911	>	else
912	>	assertTrue(delayeds.get(1).isCancelled());
913	>
914	>	if (periodicTasksContinue)
915	>	periodics.forEach(
916	>	f -> {
917	>	try { f.get(); }
918	>	catch (ExecutionException success) {
919	>	assertSame(exception, success.getCause());
920		}
921	<	},  10000, TimeUnit.MILLISECONDS);
180	<	fail("should throw");
181	<	}catch(RejectedExecutionException e){}
182	<	}
183	<
184	<	/**
185	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
186	<	*  RejectedExecutionException.
187	<	*  This occurs on an attempt to schedule a task on a shutdown executor
188	<	*/
189	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
190	<	try{
191	<	ScheduledExecutor se = new ScheduledExecutor(1);
192	<	se.shutdown();
193	<	se.scheduleAtFixedRate(new Runnable(){
194	<	public void run(){}
195	<	}, 100, 100, TimeUnit.SECONDS);
196	<	fail("should throw");
197	<	}catch(RejectedExecutionException e){}
198	<	}
199	<
200	<	/**
201	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
202	<	*  RejectedExecutionException.
203	<	*  This occurs on an attempt to schedule a task on a shutdown executor
204	<	*/
205	<	public void testScheduleAtFixedRate2_RejectedExecutionException(){
206	<	try{
207	<	ScheduledExecutor se = new ScheduledExecutor(1);
208	<	se.shutdown();
209	<	se.scheduleAtFixedRate(new Runnable(){
210	<	public void run(){}
211	<	},  1, 100, TimeUnit.SECONDS);
212	<	fail("should throw");
213	<	}catch(RejectedExecutionException e){}
214	<	}
215	<
216	<	/**
217	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
218	<	*  RejectedExecutionException.
219	<	*  This occurs on an attempt to schedule a task on a shutdown executor
220	<	*/
221	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
222	<	try{
223	<	ScheduledExecutor se = new ScheduledExecutor(1);
224	<	se.shutdown();
225	<	se.scheduleWithFixedDelay(new Runnable(){
226	<	public void run(){}
227	<	}, 100, 100, TimeUnit.SECONDS);
228	<	fail("should throw");
229	<	}catch(RejectedExecutionException e){}
230	<	}
231	<
232	<	/**
233	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
234	<	*  RejectedExecutionException.
235	<	*  This occurs on an attempt to schedule a task on a shutdown executor
236	<	*/
237	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
238	<	try{
239	<	ScheduledExecutor se = new ScheduledExecutor(1);
240	<	se.shutdown();
241	<	se.scheduleWithFixedDelay(new Runnable(){
242	<	public void run(){}
243	<	},  1, 100, TimeUnit.SECONDS);
244	<	fail("should throw");
245	<	}catch(RejectedExecutionException e){}
246	<	}
247	<
248	<	/**
249	<	*  Test to verify execute throws RejectedExecutionException
250	<	*  This occurs on an attempt to schedule a task on a shutdown executor
251	<	*/
252	<	public void testExecute_RejectedExecutionException(){
253	<	try{
254	<	ScheduledExecutor se = new ScheduledExecutor(1);
255	<	se.shutdown();
256	<	se.execute(new Runnable(){
257	<	public void run(){}
921	>	catch (Throwable fail) { threadUnexpectedException(fail); }
922		});
923	<	fail("should throw");
924	<	}catch(RejectedExecutionException e){}
923	>	else
924	>	periodics.forEach(f -> assertTrue(f.isCancelled()));
925	>
926	>	assertEquals(poolSize + 1
927	>	+ (effectiveDelayedPolicy ? 1 : 0)
928	>	+ (periodicTasksContinue ? 2 : 0),
929	>	ran.get());
930	>	}
931	>
932	>	/**
933	>	* completed submit of callable returns result
934	>	*/
935	>	public void testSubmitCallable() throws Exception {
936	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
937	>	try (PoolCleaner cleaner = cleaner(e)) {
938	>	Future<String> future = e.submit(new StringTask());
939	>	String result = future.get();
940	>	assertSame(TEST_STRING, result);
941	>	}
942	>	}
943	>
944	>	/**
945	>	* completed submit of runnable returns successfully
946	>	*/
947	>	public void testSubmitRunnable() throws Exception {
948	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
949	>	try (PoolCleaner cleaner = cleaner(e)) {
950	>	Future<?> future = e.submit(new NoOpRunnable());
951	>	future.get();
952	>	assertTrue(future.isDone());
953	>	}
954	>	}
955	>
956	>	/**
957	>	* completed submit of (runnable, result) returns result
958	>	*/
959	>	public void testSubmitRunnable2() throws Exception {
960	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
961	>	try (PoolCleaner cleaner = cleaner(e)) {
962	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
963	>	String result = future.get();
964	>	assertSame(TEST_STRING, result);
965	>	}
966	>	}
967	>
968	>	/**
969	>	* invokeAny(null) throws NullPointerException
970	>	*/
971	>	public void testInvokeAny1() throws Exception {
972	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
973	>	try (PoolCleaner cleaner = cleaner(e)) {
974	>	try {
975	>	e.invokeAny(null);
976	>	shouldThrow();
977	>	} catch (NullPointerException success) {}
978	>	}
979	>	}
980	>
981	>	/**
982	>	* invokeAny(empty collection) throws IllegalArgumentException
983	>	*/
984	>	public void testInvokeAny2() throws Exception {
985	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
986	>	try (PoolCleaner cleaner = cleaner(e)) {
987	>	try {
988	>	e.invokeAny(new ArrayList<Callable<String>>());
989	>	shouldThrow();
990	>	} catch (IllegalArgumentException success) {}
991	>	}
992	>	}
993	>
994	>	/**
995	>	* invokeAny(c) throws NullPointerException if c has null elements
996	>	*/
997	>	public void testInvokeAny3() throws Exception {
998	>	CountDownLatch latch = new CountDownLatch(1);
999	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1000	>	try (PoolCleaner cleaner = cleaner(e)) {
1001	>	List<Callable<String>> l = new ArrayList<>();
1002	>	l.add(latchAwaitingStringTask(latch));
1003	>	l.add(null);
1004	>	try {
1005	>	e.invokeAny(l);
1006	>	shouldThrow();
1007	>	} catch (NullPointerException success) {}
1008	>	latch.countDown();
1009	>	}
1010	>	}
1011	>
1012	>	/**
1013	>	* invokeAny(c) throws ExecutionException if no task completes
1014	>	*/
1015	>	public void testInvokeAny4() throws Exception {
1016	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1017	>	try (PoolCleaner cleaner = cleaner(e)) {
1018	>	List<Callable<String>> l = new ArrayList<>();
1019	>	l.add(new NPETask());
1020	>	try {
1021	>	e.invokeAny(l);
1022	>	shouldThrow();
1023	>	} catch (ExecutionException success) {
1024	>	assertTrue(success.getCause() instanceof NullPointerException);
1025	>	}
1026	>	}
1027	>	}
1028	>
1029	>	/**
1030	>	* invokeAny(c) returns result of some task
1031	>	*/
1032	>	public void testInvokeAny5() throws Exception {
1033	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1034	>	try (PoolCleaner cleaner = cleaner(e)) {
1035	>	List<Callable<String>> l = new ArrayList<>();
1036	>	l.add(new StringTask());
1037	>	l.add(new StringTask());
1038	>	String result = e.invokeAny(l);
1039	>	assertSame(TEST_STRING, result);
1040	>	}
1041	>	}
1042	>
1043	>	/**
1044	>	* invokeAll(null) throws NPE
1045	>	*/
1046	>	public void testInvokeAll1() throws Exception {
1047	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1048	>	try (PoolCleaner cleaner = cleaner(e)) {
1049	>	try {
1050	>	e.invokeAll(null);
1051	>	shouldThrow();
1052	>	} catch (NullPointerException success) {}
1053	>	}
1054	>	}
1055	>
1056	>	/**
1057	>	* invokeAll(empty collection) returns empty list
1058	>	*/
1059	>	public void testInvokeAll2() throws Exception {
1060	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1061	>	final Collection<Callable<String>> emptyCollection
1062	>	= Collections.emptyList();
1063	>	try (PoolCleaner cleaner = cleaner(e)) {
1064	>	List<Future<String>> r = e.invokeAll(emptyCollection);
1065	>	assertTrue(r.isEmpty());
1066	>	}
1067	>	}
1068	>
1069	>	/**
1070	>	* invokeAll(c) throws NPE if c has null elements
1071	>	*/
1072	>	public void testInvokeAll3() throws Exception {
1073	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1074	>	try (PoolCleaner cleaner = cleaner(e)) {
1075	>	List<Callable<String>> l = new ArrayList<>();
1076	>	l.add(new StringTask());
1077	>	l.add(null);
1078	>	try {
1079	>	e.invokeAll(l);
1080	>	shouldThrow();
1081	>	} catch (NullPointerException success) {}
1082	>	}
1083	>	}
1084	>
1085	>	/**
1086	>	* get of invokeAll(c) throws exception on failed task
1087	>	*/
1088	>	public void testInvokeAll4() throws Exception {
1089	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1090	>	try (PoolCleaner cleaner = cleaner(e)) {
1091	>	List<Callable<String>> l = new ArrayList<>();
1092	>	l.add(new NPETask());
1093	>	List<Future<String>> futures = e.invokeAll(l);
1094	>	assertEquals(1, futures.size());
1095	>	try {
1096	>	futures.get(0).get();
1097	>	shouldThrow();
1098	>	} catch (ExecutionException success) {
1099	>	assertTrue(success.getCause() instanceof NullPointerException);
1100	>	}
1101	>	}
1102	>	}
1103	>
1104	>	/**
1105	>	* invokeAll(c) returns results of all completed tasks
1106	>	*/
1107	>	public void testInvokeAll5() throws Exception {
1108	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1109	>	try (PoolCleaner cleaner = cleaner(e)) {
1110	>	List<Callable<String>> l = new ArrayList<>();
1111	>	l.add(new StringTask());
1112	>	l.add(new StringTask());
1113	>	List<Future<String>> futures = e.invokeAll(l);
1114	>	assertEquals(2, futures.size());
1115	>	for (Future<String> future : futures)
1116	>	assertSame(TEST_STRING, future.get());
1117	>	}
1118	>	}
1119	>
1120	>	/**
1121	>	* timed invokeAny(null) throws NPE
1122	>	*/
1123	>	public void testTimedInvokeAny1() throws Exception {
1124	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1125	>	try (PoolCleaner cleaner = cleaner(e)) {
1126	>	try {
1127	>	e.invokeAny(null, randomTimeout(), randomTimeUnit());
1128	>	shouldThrow();
1129	>	} catch (NullPointerException success) {}
1130	>	}
1131	>	}
1132	>
1133	>	/**
1134	>	* timed invokeAny(,,null) throws NullPointerException
1135	>	*/
1136	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1137	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1138	>	try (PoolCleaner cleaner = cleaner(e)) {
1139	>	List<Callable<String>> l = new ArrayList<>();
1140	>	l.add(new StringTask());
1141	>	try {
1142	>	e.invokeAny(l, randomTimeout(), null);
1143	>	shouldThrow();
1144	>	} catch (NullPointerException success) {}
1145	>	}
1146	>	}
1147	>
1148	>	/**
1149	>	* timed invokeAny(empty collection) throws IllegalArgumentException
1150	>	*/
1151	>	public void testTimedInvokeAny2() throws Exception {
1152	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1153	>	final Collection<Callable<String>> emptyCollection
1154	>	= Collections.emptyList();
1155	>	try (PoolCleaner cleaner = cleaner(e)) {
1156	>	try {
1157	>	e.invokeAny(emptyCollection, randomTimeout(), randomTimeUnit());
1158	>	shouldThrow();
1159	>	} catch (IllegalArgumentException success) {}
1160	>	}
1161	>	}
1162	>
1163	>	/**
1164	>	* timed invokeAny(c) throws NPE if c has null elements
1165	>	*/
1166	>	public void testTimedInvokeAny3() throws Exception {
1167	>	CountDownLatch latch = new CountDownLatch(1);
1168	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1169	>	try (PoolCleaner cleaner = cleaner(e)) {
1170	>	List<Callable<String>> l = new ArrayList<>();
1171	>	l.add(latchAwaitingStringTask(latch));
1172	>	l.add(null);
1173	>	try {
1174	>	e.invokeAny(l, randomTimeout(), randomTimeUnit());
1175	>	shouldThrow();
1176	>	} catch (NullPointerException success) {}
1177	>	latch.countDown();
1178	>	}
1179	>	}
1180	>
1181	>	/**
1182	>	* timed invokeAny(c) throws ExecutionException if no task completes
1183	>	*/
1184	>	public void testTimedInvokeAny4() throws Exception {
1185	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1186	>	try (PoolCleaner cleaner = cleaner(e)) {
1187	>	long startTime = System.nanoTime();
1188	>	List<Callable<String>> l = new ArrayList<>();
1189	>	l.add(new NPETask());
1190	>	try {
1191	>	e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1192	>	shouldThrow();
1193	>	} catch (ExecutionException success) {
1194	>	assertTrue(success.getCause() instanceof NullPointerException);
1195	>	}
1196	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1197	>	}
1198	>	}
1199	>
1200	>	/**
1201	>	* timed invokeAny(c) returns result of some task
1202	>	*/
1203	>	public void testTimedInvokeAny5() throws Exception {
1204	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1205	>	try (PoolCleaner cleaner = cleaner(e)) {
1206	>	long startTime = System.nanoTime();
1207	>	List<Callable<String>> l = new ArrayList<>();
1208	>	l.add(new StringTask());
1209	>	l.add(new StringTask());
1210	>	String result = e.invokeAny(l, LONG_DELAY_MS, MILLISECONDS);
1211	>	assertSame(TEST_STRING, result);
1212	>	assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS);
1213	>	}
1214	>	}
1215	>
1216	>	/**
1217	>	* timed invokeAll(null) throws NPE
1218	>	*/
1219	>	public void testTimedInvokeAll1() throws Exception {
1220	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1221	>	try (PoolCleaner cleaner = cleaner(e)) {
1222	>	try {
1223	>	e.invokeAll(null, randomTimeout(), randomTimeUnit());
1224	>	shouldThrow();
1225	>	} catch (NullPointerException success) {}
1226	>	}
1227	>	}
1228	>
1229	>	/**
1230	>	* timed invokeAll(,,null) throws NPE
1231	>	*/
1232	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1233	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1234	>	try (PoolCleaner cleaner = cleaner(e)) {
1235	>	List<Callable<String>> l = new ArrayList<>();
1236	>	l.add(new StringTask());
1237	>	try {
1238	>	e.invokeAll(l, randomTimeout(), null);
1239	>	shouldThrow();
1240	>	} catch (NullPointerException success) {}
1241	>	}
1242	>	}
1243	>
1244	>	/**
1245	>	* timed invokeAll(empty collection) returns empty list
1246	>	*/
1247	>	public void testTimedInvokeAll2() throws Exception {
1248	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1249	>	final Collection<Callable<String>> emptyCollection
1250	>	= Collections.emptyList();
1251	>	try (PoolCleaner cleaner = cleaner(e)) {
1252	>	List<Future<String>> r =
1253	>	e.invokeAll(emptyCollection, randomTimeout(), randomTimeUnit());
1254	>	assertTrue(r.isEmpty());
1255	>	}
1256	>	}
1257	>
1258	>	/**
1259	>	* timed invokeAll(c) throws NPE if c has null elements
1260	>	*/
1261	>	public void testTimedInvokeAll3() throws Exception {
1262	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1263	>	try (PoolCleaner cleaner = cleaner(e)) {
1264	>	List<Callable<String>> l = new ArrayList<>();
1265	>	l.add(new StringTask());
1266	>	l.add(null);
1267	>	try {
1268	>	e.invokeAll(l, randomTimeout(), randomTimeUnit());
1269	>	shouldThrow();
1270	>	} catch (NullPointerException success) {}
1271	>	}
1272	>	}
1273	>
1274	>	/**
1275	>	* get of element of invokeAll(c) throws exception on failed task
1276	>	*/
1277	>	public void testTimedInvokeAll4() throws Exception {
1278	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1279	>	try (PoolCleaner cleaner = cleaner(e)) {
1280	>	List<Callable<String>> l = new ArrayList<>();
1281	>	l.add(new NPETask());
1282	>	List<Future<String>> futures =
1283	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1284	>	assertEquals(1, futures.size());
1285	>	try {
1286	>	futures.get(0).get();
1287	>	shouldThrow();
1288	>	} catch (ExecutionException success) {
1289	>	assertTrue(success.getCause() instanceof NullPointerException);
1290	>	}
1291	>	}
1292	>	}
1293	>
1294	>	/**
1295	>	* timed invokeAll(c) returns results of all completed tasks
1296	>	*/
1297	>	public void testTimedInvokeAll5() throws Exception {
1298	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1299	>	try (PoolCleaner cleaner = cleaner(e)) {
1300	>	List<Callable<String>> l = new ArrayList<>();
1301	>	l.add(new StringTask());
1302	>	l.add(new StringTask());
1303	>	List<Future<String>> futures =
1304	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1305	>	assertEquals(2, futures.size());
1306	>	for (Future<String> future : futures)
1307	>	assertSame(TEST_STRING, future.get());
1308	>	}
1309	>	}
1310	>
1311	>	/**
1312	>	* timed invokeAll(c) cancels tasks not completed by timeout
1313	>	*/
1314	>	public void testTimedInvokeAll6() throws Exception {
1315	>	for (long timeout = timeoutMillis();;) {
1316	>	final CountDownLatch done = new CountDownLatch(1);
1317	>	final Callable<String> waiter = new CheckedCallable<String>() {
1318	>	public String realCall() {
1319	>	try { done.await(LONG_DELAY_MS, MILLISECONDS); }
1320	>	catch (InterruptedException ok) {}
1321	>	return "1"; }};
1322	>	final ExecutorService p = new ScheduledThreadPoolExecutor(2);
1323	>	try (PoolCleaner cleaner = cleaner(p, done)) {
1324	>	List<Callable<String>> tasks = new ArrayList<>();
1325	>	tasks.add(new StringTask("0"));
1326	>	tasks.add(waiter);
1327	>	tasks.add(new StringTask("2"));
1328	>	long startTime = System.nanoTime();
1329	>	List<Future<String>> futures =
1330	>	p.invokeAll(tasks, timeout, MILLISECONDS);
1331	>	assertEquals(tasks.size(), futures.size());
1332	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1333	>	for (Future future : futures)
1334	>	assertTrue(future.isDone());
1335	>	assertTrue(futures.get(1).isCancelled());
1336	>	try {
1337	>	assertEquals("0", futures.get(0).get());
1338	>	assertEquals("2", futures.get(2).get());
1339	>	break;
1340	>	} catch (CancellationException retryWithLongerTimeout) {
1341	>	timeout *= 2;
1342	>	if (timeout >= LONG_DELAY_MS / 2)
1343	>	fail("expected exactly one task to be cancelled");
1344	>	}
1345	>	}
1346	>	}
1347	>	}
1348	>
1349	>	/**
1350	>	* A fixed delay task with overflowing period should not prevent a
1351	>	* one-shot task from executing.
1352	>	* https://bugs.openjdk.java.net/browse/JDK-8051859
1353	>	*/
1354	>	public void testScheduleWithFixedDelay_overflow() throws Exception {
1355	>	final CountDownLatch delayedDone = new CountDownLatch(1);
1356	>	final CountDownLatch immediateDone = new CountDownLatch(1);
1357	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
1358	>	try (PoolCleaner cleaner = cleaner(p)) {
1359	>	final Runnable immediate = new Runnable() { public void run() {
1360	>	immediateDone.countDown();
1361	>	}};
1362	>	final Runnable delayed = new Runnable() { public void run() {
1363	>	delayedDone.countDown();
1364	>	p.submit(immediate);
1365	>	}};
1366	>	p.scheduleWithFixedDelay(delayed, 0L, Long.MAX_VALUE, SECONDS);
1367	>	await(delayedDone);
1368	>	await(immediateDone);
1369	>	}
1370		}
1371
1372		}

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