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

Comparing jsr166/src/test/tck/ScheduledExecutorTest.java (file contents):
Revision 1.3 by dl, Mon Sep 8 12:12:42 2003 UTC vs.
Revision 1.71 by jsr166, Tue Oct 6 05:22:25 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	<	private static long SHORT_DELAY_MS = 100;
42	<	private static long MEDIUM_DELAY_MS = 1000;
43	<	private static long LONG_DELAY_MS = 10000;
44	<
45	<	static class MyRunnable implements Runnable {
46	<	volatile boolean waiting = true;
47	<	volatile boolean done = false;
48	<	public void run(){
49	<	try{
50	<	Thread.sleep(SHORT_DELAY_MS);
51	<	waiting = false;
52	<	done = true;
53	<	} catch(Exception e){
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(LONG_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	>	await(done);
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	<	static class MyCallable implements Callable {
172	<	volatile boolean waiting = true;
173	<	volatile boolean done = false;
174	<	public Object call(){
175	<	try{
176	<	Thread.sleep(SHORT_DELAY_MS);
177	<	waiting = false;
178	<	done = true;
179	<	}catch(Exception e){}
180	<	return Boolean.TRUE;
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	>	await(done);
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	<	public Runnable newRunnable(){
198	<	return new Runnable(){
199	<	public void run(){
200	<	try{Thread.sleep(SHORT_DELAY_MS);
201	<	} catch(Exception e){
202	<	}
203	<	}
204	<	};
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	<	public Runnable newNoopRunnable() {
211	<	return new Runnable(){
212	<	public void run(){
213	<	}
214	<	};
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	<	*  Test to verify execute successfully runs the given Runnable
225	>	* execute throws RejectedExecutionException if shutdown
226		*/
227	<	public void testExecute(){
228	<	try{
229	<	MyRunnable runnable =new MyRunnable();
230	<	ScheduledExecutor one = new ScheduledExecutor(1);
231	<	one.execute(runnable);
232	<	Thread.sleep(SHORT_DELAY_MS/2);
233	<	assertTrue(runnable.waiting);
234	<	one.shutdown();
235	<	try{
236	<	Thread.sleep(MEDIUM_DELAY_MS);
85	<	} catch(InterruptedException e){
86	<	fail("unexpected exception");
87	<	}
88	<	assertFalse(runnable.waiting);
89	<	assertTrue(runnable.done);
90	<	one.shutdown();
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	<	catch(Exception e){
239	<	fail("unexpected exception");
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	<	*  Test to verify schedule successfully runs the given Callable.
99	<	*  The waiting flag shows that the Callable is not started until
100	<	*  immediately.
257	>	* schedule callable throws RejectedExecutionException if shutdown
258		*/
259	<	public void testSchedule1(){
260	<	try{
261	<	MyCallable callable = new MyCallable();
262	<	ScheduledExecutor one = new ScheduledExecutor(1);
263	<	Future f = one.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
264	<	assertTrue(callable.waiting);
265	<	Thread.sleep(MEDIUM_DELAY_MS);
266	<	assertTrue(callable.done);
267	<	assertEquals(Boolean.TRUE, f.get());
268	<	one.shutdown();
112	<	}catch(RejectedExecutionException e){}
113	<	catch(Exception e){
114	<	fail("unexpected exception");
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	<	*  Another version of schedule, only using Runnable instead of Callable
273	>	* scheduleAtFixedRate throws RejectedExecutionException if shutdown
274		*/
275	<	public void testSchedule3(){
276	<	try{
277	<	MyRunnable runnable = new MyRunnable();
278	<	ScheduledExecutor one = new ScheduledExecutor(1);
279	<	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
280	<	Thread.sleep(SHORT_DELAY_MS/2);
281	<	assertTrue(runnable.waiting);
282	<	Thread.sleep(MEDIUM_DELAY_MS);
283	<	assertTrue(runnable.done);
284	<	one.shutdown();
131	<	} catch(Exception e){
132	<	fail("unexpected exception");
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	<
287	>
288		/**
289	<	*  The final version of schedule, using both long, TimeUnit and Runnable
289	>	* scheduleWithFixedDelay throws RejectedExecutionException if shutdown
290		*/
291	<	public void testSchedule4(){
292	<	try{
293	<	MyRunnable runnable = new MyRunnable();
294	<	ScheduledExecutor one = new ScheduledExecutor(1);
295	<	one.schedule(runnable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
296	<	//      Thread.sleep(505);
297	<	assertTrue(runnable.waiting);
298	<	Thread.sleep(MEDIUM_DELAY_MS);
299	<	assertTrue(runnable.done);
300	<	one.shutdown();
149	<	} catch(Exception e){
150	<	fail("unexpected exception");
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		}
153	–
154	–
155	–	// exception tests
303
304		/**
305	<	*  Test to verify schedule(Runnable, long) throws RejectedExecutionException
306	<	*  This occurs on an attempt to schedule a task on a shutdown executor
305	>	* getActiveCount increases but doesn't overestimate, when a
306	>	* thread becomes active
307		*/
308	<	public void testSchedule1_RejectedExecutionException(){
309	<	try{
310	<	ScheduledExecutor se = new ScheduledExecutor(1);
311	<	se.shutdown();
312	<	se.schedule(new Runnable(){
313	<	public void run(){}
314	<	}, 10000, TimeUnit.MILLISECONDS);
315	<	fail("shoud throw");
316	<	}catch(RejectedExecutionException e){}
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	>	await(done);
319	>	}});
320	>	assertTrue(threadStarted.await(LONG_DELAY_MS, MILLISECONDS));
321	>	assertEquals(1, p.getActiveCount());
322	>	done.countDown();
323	>	}
324		}
325
326		/**
327	<	*  Test to verify schedule(Callable, long, TimeUnit) throws RejectedExecutionException
328	<	*  This occurs on an attempt to schedule a task on a shutdown executor
327	>	* getCompletedTaskCount increases, but doesn't overestimate,
328	>	* when tasks complete
329		*/
330	<	public void testSchedule2_RejectedExecutionException(){
331	<	try{
332	<	ScheduledExecutor se = new ScheduledExecutor(1);
333	<	se.shutdown();
334	<	se.schedule(new Callable(){
335	<	public Object call(){
336	<	return Boolean.TRUE;
337	<	}
338	<	}, (long)100, TimeUnit.SECONDS);
339	<	fail("should throw");
340	<	}catch(RejectedExecutionException e){}
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	<	*  Test to verify schedule(Callable, long) throws RejectedExecutionException
191	<	*  This occurs on an attempt to schedule a task on a shutdown executor
358	>	* getCorePoolSize returns size given in constructor if not otherwise set
359		*/
360	<	public void testSchedule3_RejectedExecutionException(){
361	<	try{
362	<	ScheduledExecutor se = new ScheduledExecutor(1);
363	<	se.shutdown();
364	<	se.schedule(new Callable(){
365	<	public Object call(){
366	<	return Boolean.TRUE;
367	<	}
368	<	},  10000, TimeUnit.MILLISECONDS);
369	<	fail("should throw");
370	<	}catch(RejectedExecutionException e){}
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, done)) {
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	>	await(done);
383	>	assertEquals(THREADS, p.getLargestPoolSize());
384	>	}});
385	>	await(threadsStarted);
386	>	assertEquals(THREADS, p.getLargestPoolSize());
387	>	}
388	>	assertEquals(THREADS, p.getLargestPoolSize());
389	>	}
390	>
391	>	/**
392	>	* getPoolSize increases, but doesn't overestimate, when threads
393	>	* become active
394	>	*/
395	>	public void testGetPoolSize() throws InterruptedException {
396	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
397	>	final CountDownLatch threadStarted = new CountDownLatch(1);
398	>	final CountDownLatch done = new CountDownLatch(1);
399	>	try (PoolCleaner cleaner = cleaner(p, done)) {
400	>	assertEquals(0, p.getPoolSize());
401	>	p.execute(new CheckedRunnable() {
402	>	public void realRun() throws InterruptedException {
403	>	threadStarted.countDown();
404	>	assertEquals(1, p.getPoolSize());
405	>	await(done);
406	>	}});
407	>	await(threadStarted);
408	>	assertEquals(1, p.getPoolSize());
409	>	}
410	>	}
411	>
412	>	/**
413	>	* getTaskCount increases, but doesn't overestimate, when tasks
414	>	* submitted
415	>	*/
416	>	public void testGetTaskCount() throws InterruptedException {
417	>	final int TASKS = 3;
418	>	final CountDownLatch done = new CountDownLatch(1);
419	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
420	>	try (PoolCleaner cleaner = cleaner(p, done)) {
421	>	final CountDownLatch threadStarted = new CountDownLatch(1);
422	>	assertEquals(0, p.getTaskCount());
423	>	assertEquals(0, p.getCompletedTaskCount());
424	>	p.execute(new CheckedRunnable() {
425	>	public void realRun() throws InterruptedException {
426	>	threadStarted.countDown();
427	>	await(done);
428	>	}});
429	>	assertTrue(threadStarted.await(LONG_DELAY_MS, MILLISECONDS));
430	>	assertEquals(1, p.getTaskCount());
431	>	assertEquals(0, p.getCompletedTaskCount());
432	>	for (int i = 0; i < TASKS; i++) {
433	>	assertEquals(1 + i, p.getTaskCount());
434	>	p.execute(new CheckedRunnable() {
435	>	public void realRun() throws InterruptedException {
436	>	threadStarted.countDown();
437	>	assertEquals(1 + TASKS, p.getTaskCount());
438	>	await(done);
439	>	}});
440	>	}
441	>	assertEquals(1 + TASKS, p.getTaskCount());
442	>	assertEquals(0, p.getCompletedTaskCount());
443	>	}
444	>	assertEquals(1 + TASKS, p.getTaskCount());
445	>	assertEquals(1 + TASKS, p.getCompletedTaskCount());
446		}
447
448		/**
449	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
208	<	*  RejectedExecutionException.
209	<	*  This occurs on an attempt to schedule a task on a shutdown executor
449	>	* getThreadFactory returns factory in constructor if not set
450		*/
451	<	public void testScheduleAtFixedRate1_RejectedExecutionException(){
452	<	try{
453	<	ScheduledExecutor se = new ScheduledExecutor(1);
454	<	se.shutdown();
455	<	se.scheduleAtFixedRate(new Runnable(){
456	<	public void run(){}
457	<	}, 100, 100, TimeUnit.SECONDS);
218	<	fail("should throw");
219	<	}catch(RejectedExecutionException e){}
451	>	public void testGetThreadFactory() throws InterruptedException {
452	>	final ThreadFactory threadFactory = new SimpleThreadFactory();
453	>	final ScheduledThreadPoolExecutor p =
454	>	new ScheduledThreadPoolExecutor(1, threadFactory);
455	>	try (PoolCleaner cleaner = cleaner(p)) {
456	>	assertSame(threadFactory, p.getThreadFactory());
457	>	}
458		}
459	<
459	>
460		/**
461	<	*  Test to verify scheduleAtFixedRate(Runnable, long, long, TimeUnit) throws
224	<	*  RejectedExecutionException.
225	<	*  This occurs on an attempt to schedule a task on a shutdown executor
461	>	* setThreadFactory sets the thread factory returned by getThreadFactory
462		*/
463	<	public void testScheduleAtFixedRate2_RejectedExecutionException(){
464	<	try{
465	<	ScheduledExecutor se = new ScheduledExecutor(1);
466	<	se.shutdown();
467	<	se.scheduleAtFixedRate(new Runnable(){
468	<	public void run(){}
469	<	},  1, 100, TimeUnit.SECONDS);
234	<	fail("should throw");
235	<	}catch(RejectedExecutionException e){}
463	>	public void testSetThreadFactory() throws InterruptedException {
464	>	ThreadFactory threadFactory = new SimpleThreadFactory();
465	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
466	>	try (PoolCleaner cleaner = cleaner(p)) {
467	>	p.setThreadFactory(threadFactory);
468	>	assertSame(threadFactory, p.getThreadFactory());
469	>	}
470		}
471
472		/**
473	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
240	<	*  RejectedExecutionException.
241	<	*  This occurs on an attempt to schedule a task on a shutdown executor
473	>	* setThreadFactory(null) throws NPE
474		*/
475	<	public void testScheduleWithFixedDelay1_RejectedExecutionException(){
476	<	try{
477	<	ScheduledExecutor se = new ScheduledExecutor(1);
478	<	se.shutdown();
479	<	se.scheduleWithFixedDelay(new Runnable(){
480	<	public void run(){}
481	<	}, 100, 100, TimeUnit.SECONDS);
482	<	fail("should throw");
251	<	}catch(RejectedExecutionException e){}
475	>	public void testSetThreadFactoryNull() throws InterruptedException {
476	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
477	>	try (PoolCleaner cleaner = cleaner(p)) {
478	>	try {
479	>	p.setThreadFactory(null);
480	>	shouldThrow();
481	>	} catch (NullPointerException success) {}
482	>	}
483		}
484
485		/**
486	<	*  Test to verify scheduleWithFixedDelay(Runnable, long, long, TimeUnit) throws
256	<	*  RejectedExecutionException.
257	<	*  This occurs on an attempt to schedule a task on a shutdown executor
486	>	* isShutdown is false before shutdown, true after
487		*/
488	<	public void testScheduleWithFixedDelay2_RejectedExecutionException(){
489	<	try{
490	<	ScheduledExecutor se = new ScheduledExecutor(1);
491	<	se.shutdown();
492	<	se.scheduleWithFixedDelay(new Runnable(){
493	<	public void run(){}
494	<	},  1, 100, TimeUnit.SECONDS);
495	<	fail("should throw");
496	<	}catch(RejectedExecutionException e){}
488	>	public void testIsShutdown() {
489	>
490	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
491	>	try {
492	>	assertFalse(p.isShutdown());
493	>	}
494	>	finally {
495	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
496	>	}
497	>	assertTrue(p.isShutdown());
498		}
499
500		/**
501	<	*  Test to verify execute throws RejectedExecutionException
272	<	*  This occurs on an attempt to schedule a task on a shutdown executor
501	>	* isTerminated is false before termination, true after
502		*/
503	<	public void testExecute_RejectedExecutionException(){
504	<	try{
505	<	ScheduledExecutor se = new ScheduledExecutor(1);
506	<	se.shutdown();
507	<	se.execute(new Runnable(){
508	<	public void run(){}
509	<	});
510	<	fail("should throw");
511	<	}catch(RejectedExecutionException e){}
503	>	public void testIsTerminated() throws InterruptedException {
504	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
505	>	try (PoolCleaner cleaner = cleaner(p)) {
506	>	final CountDownLatch threadStarted = new CountDownLatch(1);
507	>	final CountDownLatch done = new CountDownLatch(1);
508	>	assertFalse(p.isTerminated());
509	>	p.execute(new CheckedRunnable() {
510	>	public void realRun() throws InterruptedException {
511	>	assertFalse(p.isTerminated());
512	>	threadStarted.countDown();
513	>	await(done);
514	>	}});
515	>	assertTrue(threadStarted.await(LONG_DELAY_MS, MILLISECONDS));
516	>	assertFalse(p.isTerminating());
517	>	done.countDown();
518	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
519	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
520	>	assertTrue(p.isTerminated());
521	>	}
522	>	}
523	>
524	>	/**
525	>	* isTerminating is not true when running or when terminated
526	>	*/
527	>	public void testIsTerminating() throws InterruptedException {
528	>	final ThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
529	>	final CountDownLatch threadStarted = new CountDownLatch(1);
530	>	final CountDownLatch done = new CountDownLatch(1);
531	>	try (PoolCleaner cleaner = cleaner(p)) {
532	>	assertFalse(p.isTerminating());
533	>	p.execute(new CheckedRunnable() {
534	>	public void realRun() throws InterruptedException {
535	>	assertFalse(p.isTerminating());
536	>	threadStarted.countDown();
537	>	await(done);
538	>	}});
539	>	assertTrue(threadStarted.await(LONG_DELAY_MS, MILLISECONDS));
540	>	assertFalse(p.isTerminating());
541	>	done.countDown();
542	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
543	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
544	>	assertTrue(p.isTerminated());
545	>	assertFalse(p.isTerminating());
546	>	}
547	>	}
548	>
549	>	/**
550	>	* getQueue returns the work queue, which contains queued tasks
551	>	*/
552	>	public void testGetQueue() throws InterruptedException {
553	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
554	>	try (PoolCleaner cleaner = cleaner(p)) {
555	>	final CountDownLatch threadStarted = new CountDownLatch(1);
556	>	final CountDownLatch done = new CountDownLatch(1);
557	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
558	>	for (int i = 0; i < tasks.length; i++) {
559	>	Runnable r = new CheckedRunnable() {
560	>	public void realRun() throws InterruptedException {
561	>	threadStarted.countDown();
562	>	await(done);
563	>	}};
564	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
565	>	}
566	>	assertTrue(threadStarted.await(LONG_DELAY_MS, MILLISECONDS));
567	>	BlockingQueue<Runnable> q = p.getQueue();
568	>	assertTrue(q.contains(tasks[tasks.length - 1]));
569	>	assertFalse(q.contains(tasks[0]));
570	>	done.countDown();
571	>	}
572	>	}
573	>
574	>	/**
575	>	* remove(task) removes queued task, and fails to remove active task
576	>	*/
577	>	public void testRemove() throws InterruptedException {
578	>	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
579	>	try (PoolCleaner cleaner = cleaner(p)) {
580	>	ScheduledFuture[] tasks = new ScheduledFuture[5];
581	>	final CountDownLatch threadStarted = new CountDownLatch(1);
582	>	final CountDownLatch done = new CountDownLatch(1);
583	>	for (int i = 0; i < tasks.length; i++) {
584	>	Runnable r = new CheckedRunnable() {
585	>	public void realRun() throws InterruptedException {
586	>	threadStarted.countDown();
587	>	await(done);
588	>	}};
589	>	tasks[i] = p.schedule(r, 1, MILLISECONDS);
590	>	}
591	>	assertTrue(threadStarted.await(LONG_DELAY_MS, MILLISECONDS));
592	>	BlockingQueue<Runnable> q = p.getQueue();
593	>	assertFalse(p.remove((Runnable)tasks[0]));
594	>	assertTrue(q.contains((Runnable)tasks[4]));
595	>	assertTrue(q.contains((Runnable)tasks[3]));
596	>	assertTrue(p.remove((Runnable)tasks[4]));
597	>	assertFalse(p.remove((Runnable)tasks[4]));
598	>	assertFalse(q.contains((Runnable)tasks[4]));
599	>	assertTrue(q.contains((Runnable)tasks[3]));
600	>	assertTrue(p.remove((Runnable)tasks[3]));
601	>	assertFalse(q.contains((Runnable)tasks[3]));
602	>	done.countDown();
603	>	}
604		}
605
606	+	/**
607	+	* purge eventually removes cancelled tasks from the queue
608	+	*/
609	+	public void testPurge() throws InterruptedException {
610	+	final ScheduledFuture[] tasks = new ScheduledFuture[5];
611	+	final Runnable releaser = new Runnable() { public void run() {
612	+	for (ScheduledFuture task : tasks)
613	+	if (task != null) task.cancel(true); }};
614	+	final ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
615	+	try (PoolCleaner cleaner = cleaner(p, releaser)) {
616	+	for (int i = 0; i < tasks.length; i++)
617	+	tasks[i] = p.schedule(new SmallPossiblyInterruptedRunnable(),
618	+	LONG_DELAY_MS, MILLISECONDS);
619	+	int max = tasks.length;
620	+	if (tasks[4].cancel(true)) --max;
621	+	if (tasks[3].cancel(true)) --max;
622	+	// There must eventually be an interference-free point at
623	+	// which purge will not fail. (At worst, when queue is empty.)
624	+	long startTime = System.nanoTime();
625	+	do {
626	+	p.purge();
627	+	long count = p.getTaskCount();
628	+	if (count == max)
629	+	return;
630	+	} while (millisElapsedSince(startTime) < LONG_DELAY_MS);
631	+	fail("Purge failed to remove cancelled tasks");
632	+	}
633	+	}
634
635	+	/**
636	+	* shutdownNow returns a list containing tasks that were not run,
637	+	* and those tasks are drained from the queue
638	+	*/
639	+	public void testShutdownNow() throws InterruptedException {
640	+	final int poolSize = 2;
641	+	final int count = 5;
642	+	final AtomicInteger ran = new AtomicInteger(0);
643	+	final ScheduledThreadPoolExecutor p =
644	+	new ScheduledThreadPoolExecutor(poolSize);
645	+	final CountDownLatch threadsStarted = new CountDownLatch(poolSize);
646	+	Runnable waiter = new CheckedRunnable() { public void realRun() {
647	+	threadsStarted.countDown();
648	+	try {
649	+	MILLISECONDS.sleep(2 * LONG_DELAY_MS);
650	+	} catch (InterruptedException success) {}
651	+	ran.getAndIncrement();
652	+	}};
653	+	for (int i = 0; i < count; i++)
654	+	p.execute(waiter);
655	+	await(threadsStarted);
656	+	assertEquals(poolSize, p.getActiveCount());
657	+	assertEquals(0, p.getCompletedTaskCount());
658	+	final List<Runnable> queuedTasks;
659	+	try {
660	+	queuedTasks = p.shutdownNow();
661	+	} catch (SecurityException ok) {
662	+	return; // Allowed in case test doesn't have privs
663	+	}
664	+	assertTrue(p.isShutdown());
665	+	assertTrue(p.getQueue().isEmpty());
666	+	assertEquals(count - poolSize, queuedTasks.size());
667	+	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
668	+	assertTrue(p.isTerminated());
669	+	assertEquals(poolSize, ran.get());
670	+	assertEquals(poolSize, p.getCompletedTaskCount());
671	+	}
672
673		/**
674	<	*  Test to verify getActiveCount gives correct values
675	<	*/
676	<	public void testGetActiveCount(){
677	<	ScheduledExecutor two = new ScheduledExecutor(2);
674	>	* shutdownNow returns a list containing tasks that were not run,
675	>	* and those tasks are drained from the queue
676	>	*/
677	>	public void testShutdownNow_delayedTasks() throws InterruptedException {
678	>	ScheduledThreadPoolExecutor p = new ScheduledThreadPoolExecutor(1);
679	>	List<ScheduledFuture> tasks = new ArrayList<>();
680	>	for (int i = 0; i < 3; i++) {
681	>	Runnable r = new NoOpRunnable();
682	>	tasks.add(p.schedule(r, 9, SECONDS));
683	>	tasks.add(p.scheduleAtFixedRate(r, 9, 9, SECONDS));
684	>	tasks.add(p.scheduleWithFixedDelay(r, 9, 9, SECONDS));
685	>	}
686	>	if (testImplementationDetails)
687	>	assertEquals(new HashSet(tasks), new HashSet(p.getQueue()));
688	>	final List<Runnable> queuedTasks;
689		try {
690	<	assertEquals(0, two.getActiveCount());
691	<	two.execute(newRunnable());
692	<	try{
693	<	Thread.sleep(SHORT_DELAY_MS/2);
694	<	} catch(Exception e){
695	<	fail("unexpected exception");
690	>	queuedTasks = p.shutdownNow();
691	>	} catch (SecurityException ok) {
692	>	return; // Allowed in case test doesn't have privs
693	>	}
694	>	assertTrue(p.isShutdown());
695	>	assertTrue(p.getQueue().isEmpty());
696	>	if (testImplementationDetails)
697	>	assertEquals(new HashSet(tasks), new HashSet(queuedTasks));
698	>	assertEquals(tasks.size(), queuedTasks.size());
699	>	for (ScheduledFuture task : tasks) {
700	>	assertFalse(task.isDone());
701	>	assertFalse(task.isCancelled());
702	>	}
703	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
704	>	assertTrue(p.isTerminated());
705	>	}
706	>
707	>	/**
708	>	* By default, periodic tasks are cancelled at shutdown.
709	>	* By default, delayed tasks keep running after shutdown.
710	>	* Check that changing the default values work:
711	>	* - setExecuteExistingDelayedTasksAfterShutdownPolicy
712	>	* - setContinueExistingPeriodicTasksAfterShutdownPolicy
713	>	*/
714	>	public void testShutdown_cancellation() throws Exception {
715	>	Boolean[] allBooleans = { null, Boolean.FALSE, Boolean.TRUE };
716	>	for (Boolean policy : allBooleans)
717	>	{
718	>	final int poolSize = 2;
719	>	final ScheduledThreadPoolExecutor p
720	>	= new ScheduledThreadPoolExecutor(poolSize);
721	>	final boolean effectiveDelayedPolicy = (policy != Boolean.FALSE);
722	>	final boolean effectivePeriodicPolicy = (policy == Boolean.TRUE);
723	>	final boolean effectiveRemovePolicy = (policy == Boolean.TRUE);
724	>	if (policy != null) {
725	>	p.setExecuteExistingDelayedTasksAfterShutdownPolicy(policy);
726	>	p.setContinueExistingPeriodicTasksAfterShutdownPolicy(policy);
727	>	p.setRemoveOnCancelPolicy(policy);
728	>	}
729	>	assertEquals(effectiveDelayedPolicy,
730	>	p.getExecuteExistingDelayedTasksAfterShutdownPolicy());
731	>	assertEquals(effectivePeriodicPolicy,
732	>	p.getContinueExistingPeriodicTasksAfterShutdownPolicy());
733	>	assertEquals(effectiveRemovePolicy,
734	>	p.getRemoveOnCancelPolicy());
735	>	// Strategy: Wedge the pool with poolSize "blocker" threads
736	>	final AtomicInteger ran = new AtomicInteger(0);
737	>	final CountDownLatch poolBlocked = new CountDownLatch(poolSize);
738	>	final CountDownLatch unblock = new CountDownLatch(1);
739	>	final CountDownLatch periodicLatch1 = new CountDownLatch(2);
740	>	final CountDownLatch periodicLatch2 = new CountDownLatch(2);
741	>	Runnable task = new CheckedRunnable() { public void realRun()
742	>	throws InterruptedException {
743	>	poolBlocked.countDown();
744	>	assertTrue(unblock.await(LONG_DELAY_MS, MILLISECONDS));
745	>	ran.getAndIncrement();
746	>	}};
747	>	List<Future<?>> blockers = new ArrayList<>();
748	>	List<Future<?>> periodics = new ArrayList<>();
749	>	List<Future<?>> delayeds = new ArrayList<>();
750	>	for (int i = 0; i < poolSize; i++)
751	>	blockers.add(p.submit(task));
752	>	assertTrue(poolBlocked.await(LONG_DELAY_MS, MILLISECONDS));
753	>
754	>	periodics.add(p.scheduleAtFixedRate(countDowner(periodicLatch1),
755	>	1, 1, MILLISECONDS));
756	>	periodics.add(p.scheduleWithFixedDelay(countDowner(periodicLatch2),
757	>	1, 1, MILLISECONDS));
758	>	delayeds.add(p.schedule(task, 1, MILLISECONDS));
759	>
760	>	assertTrue(p.getQueue().containsAll(periodics));
761	>	assertTrue(p.getQueue().containsAll(delayeds));
762	>	try { p.shutdown(); } catch (SecurityException ok) { return; }
763	>	assertTrue(p.isShutdown());
764	>	assertFalse(p.isTerminated());
765	>	for (Future<?> periodic : periodics) {
766	>	assertTrue(effectivePeriodicPolicy ^ periodic.isCancelled());
767	>	assertTrue(effectivePeriodicPolicy ^ periodic.isDone());
768	>	}
769	>	for (Future<?> delayed : delayeds) {
770	>	assertTrue(effectiveDelayedPolicy ^ delayed.isCancelled());
771	>	assertTrue(effectiveDelayedPolicy ^ delayed.isDone());
772	>	}
773	>	if (testImplementationDetails) {
774	>	assertEquals(effectivePeriodicPolicy,
775	>	p.getQueue().containsAll(periodics));
776	>	assertEquals(effectiveDelayedPolicy,
777	>	p.getQueue().containsAll(delayeds));
778	>	}
779	>	// Release all pool threads
780	>	unblock.countDown();
781	>
782	>	for (Future<?> delayed : delayeds) {
783	>	if (effectiveDelayedPolicy) {
784	>	assertNull(delayed.get());
785		}
786	<	assertEquals(1, two.getActiveCount());
787	<	} finally {
788	<	two.shutdown();
786	>	}
787	>	if (effectivePeriodicPolicy) {
788	>	assertTrue(periodicLatch1.await(LONG_DELAY_MS, MILLISECONDS));
789	>	assertTrue(periodicLatch2.await(LONG_DELAY_MS, MILLISECONDS));
790	>	for (Future<?> periodic : periodics) {
791	>	assertTrue(periodic.cancel(false));
792	>	assertTrue(periodic.isCancelled());
793	>	assertTrue(periodic.isDone());
794	>	}
795	>	}
796	>	assertTrue(p.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
797	>	assertTrue(p.isTerminated());
798	>	assertEquals(2 + (effectiveDelayedPolicy ? 1 : 0), ran.get());
799	>	}}
800	>
801	>	/**
802	>	* completed submit of callable returns result
803	>	*/
804	>	public void testSubmitCallable() throws Exception {
805	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
806	>	try (PoolCleaner cleaner = cleaner(e)) {
807	>	Future<String> future = e.submit(new StringTask());
808	>	String result = future.get();
809	>	assertSame(TEST_STRING, result);
810		}
811		}
812	<
812	>
813		/**
814	<	*  Test to verify getCompleteTaskCount gives correct values
814	>	* completed submit of runnable returns successfully
815		*/
816	<	public void testGetCompletedTaskCount(){
817	<	ScheduledExecutor two = new ScheduledExecutor(2);
818	<	try {
819	<	assertEquals(0, two.getCompletedTaskCount());
820	<	two.execute(newRunnable());
821	<	try{
315	<	Thread.sleep(MEDIUM_DELAY_MS/2);
316	<	} catch(Exception e){
317	<	fail("unexpected exception");
318	<	}
319	<	assertEquals(1, two.getCompletedTaskCount());
320	<	} finally {
321	<	two.shutdown();
816	>	public void testSubmitRunnable() throws Exception {
817	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
818	>	try (PoolCleaner cleaner = cleaner(e)) {
819	>	Future<?> future = e.submit(new NoOpRunnable());
820	>	future.get();
821	>	assertTrue(future.isDone());
822		}
823		}
824	<
824	>
825		/**
826	<	*  Test to verify getCorePoolSize gives correct values
826	>	* completed submit of (runnable, result) returns result
827		*/
828	<	public void testGetCorePoolSize(){
829	<	ScheduledExecutor one = new ScheduledExecutor(1);
830	<	try {
831	<	assertEquals(1, one.getCorePoolSize());
832	<	} finally {
833	<	one.shutdown();
828	>	public void testSubmitRunnable2() throws Exception {
829	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
830	>	try (PoolCleaner cleaner = cleaner(e)) {
831	>	Future<String> future = e.submit(new NoOpRunnable(), TEST_STRING);
832	>	String result = future.get();
833	>	assertSame(TEST_STRING, result);
834		}
835		}
836	<
836	>
837		/**
838	<	*  Test to verify getLargestPoolSize gives correct values
838	>	* invokeAny(null) throws NPE
839		*/
840	<	public void testGetLargestPoolSize(){
841	<	ScheduledExecutor two = new ScheduledExecutor(2);
842	<	try {
843	<	assertEquals(0, two.getLargestPoolSize());
844	<	two.execute(newRunnable());
845	<	two.execute(newRunnable());
846	<	try{
847	<	Thread.sleep(SHORT_DELAY_MS/2);
848	<	} catch(Exception e){
849	<	fail("unexpected exception");
840	>	public void testInvokeAny1() throws Exception {
841	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
842	>	try (PoolCleaner cleaner = cleaner(e)) {
843	>	try {
844	>	e.invokeAny(null);
845	>	shouldThrow();
846	>	} catch (NullPointerException success) {}
847	>	}
848	>	}
849	>
850	>	/**
851	>	* invokeAny(empty collection) throws IAE
852	>	*/
853	>	public void testInvokeAny2() throws Exception {
854	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
855	>	try (PoolCleaner cleaner = cleaner(e)) {
856	>	try {
857	>	e.invokeAny(new ArrayList<Callable<String>>());
858	>	shouldThrow();
859	>	} catch (IllegalArgumentException success) {}
860	>	}
861	>	}
862	>
863	>	/**
864	>	* invokeAny(c) throws NPE if c has null elements
865	>	*/
866	>	public void testInvokeAny3() throws Exception {
867	>	CountDownLatch latch = new CountDownLatch(1);
868	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
869	>	try (PoolCleaner cleaner = cleaner(e)) {
870	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
871	>	l.add(latchAwaitingStringTask(latch));
872	>	l.add(null);
873	>	try {
874	>	e.invokeAny(l);
875	>	shouldThrow();
876	>	} catch (NullPointerException success) {}
877	>	latch.countDown();
878	>	}
879	>	}
880	>
881	>	/**
882	>	* invokeAny(c) throws ExecutionException if no task completes
883	>	*/
884	>	public void testInvokeAny4() throws Exception {
885	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
886	>	try (PoolCleaner cleaner = cleaner(e)) {
887	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
888	>	l.add(new NPETask());
889	>	try {
890	>	e.invokeAny(l);
891	>	shouldThrow();
892	>	} catch (ExecutionException success) {
893	>	assertTrue(success.getCause() instanceof NullPointerException);
894		}
351	–	assertEquals(2, two.getLargestPoolSize());
352	–	} finally {
353	–	two.shutdown();
895		}
896		}
897	<
897	>
898		/**
899	<	*  Test to verify getPoolSize gives correct values
899	>	* invokeAny(c) returns result of some task
900		*/
901	<	public void testGetPoolSize(){
902	<	ScheduledExecutor one = new ScheduledExecutor(1);
903	<	try {
904	<	assertEquals(0, one.getPoolSize());
905	<	one.execute(newRunnable());
906	<	assertEquals(1, one.getPoolSize());
907	<	} finally {
908	<	one.shutdown();
901	>	public void testInvokeAny5() throws Exception {
902	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
903	>	try (PoolCleaner cleaner = cleaner(e)) {
904	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
905	>	l.add(new StringTask());
906	>	l.add(new StringTask());
907	>	String result = e.invokeAny(l);
908	>	assertSame(TEST_STRING, result);
909		}
910		}
911	<
911	>
912		/**
913	<	*  Test to verify getTaskCount gives correct values
913	>	* invokeAll(null) throws NPE
914		*/
915	<	public void testGetTaskCount(){
916	<	ScheduledExecutor one = new ScheduledExecutor(1);
917	<	try {
918	<	assertEquals(0, one.getTaskCount());
919	<	for(int i = 0; i < 5; i++)
920	<	one.execute(newRunnable());
921	<	try{
381	<	Thread.sleep(SHORT_DELAY_MS/2);
382	<	} catch(Exception e){
383	<	fail("unexpected exception");
384	<	}
385	<	assertEquals(5, one.getTaskCount());
386	<	} finally {
387	<	one.shutdown();
388	<	}
389	<	}
390	<
391	<	/**
392	<	*  Test to verify isShutDown gives correct values
393	<	*/
394	<	public void testIsShutdown(){
395	<
396	<	ScheduledExecutor one = new ScheduledExecutor(1);
397	<	try {
398	<	assertFalse(one.isShutdown());
915	>	public void testInvokeAll1() throws Exception {
916	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
917	>	try (PoolCleaner cleaner = cleaner(e)) {
918	>	try {
919	>	e.invokeAll(null);
920	>	shouldThrow();
921	>	} catch (NullPointerException success) {}
922		}
923	<	finally {
924	<	one.shutdown();
923	>	}
924	>
925	>	/**
926	>	* invokeAll(empty collection) returns empty collection
927	>	*/
928	>	public void testInvokeAll2() throws Exception {
929	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
930	>	try (PoolCleaner cleaner = cleaner(e)) {
931	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>());
932	>	assertTrue(r.isEmpty());
933		}
403	–	assertTrue(one.isShutdown());
934		}
935
406	–
936		/**
937	<	*  Test to verify isTerminated gives correct values
409	<	*  Makes sure termination does not take an innapropriate
410	<	*  amount of time
937	>	* invokeAll(c) throws NPE if c has null elements
938		*/
939	<	public void testIsTerminated(){
940	<	ScheduledExecutor one = new ScheduledExecutor(1);
941	<	try {
942	<	one.execute(newRunnable());
943	<	} finally {
944	<	one.shutdown();
945	<	}
946	<	boolean flag = false;
947	<	try{
948	<	flag = one.awaitTermination(10, TimeUnit.SECONDS);
949	<	} catch(Exception e){
423	<	fail("unexpected exception");
424	<	}
425	<	assertTrue(one.isTerminated());
426	<	if(!flag)
427	<	fail("ThreadPoolExecutor - thread pool did not terminate within suitable timeframe");
939	>	public void testInvokeAll3() throws Exception {
940	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
941	>	try (PoolCleaner cleaner = cleaner(e)) {
942	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
943	>	l.add(new StringTask());
944	>	l.add(null);
945	>	try {
946	>	e.invokeAll(l);
947	>	shouldThrow();
948	>	} catch (NullPointerException success) {}
949	>	}
950		}
951
952		/**
953	<	*  Test to verify that purge correctly removes cancelled tasks
432	<	*  from the queue
953	>	* get of invokeAll(c) throws exception on failed task
954		*/
955	<	public void testPurge(){
956	<	ScheduledExecutor one = new ScheduledExecutor(1);
957	<	try {
958	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
959	<	for(int i = 0; i < 5; i++){
960	<	tasks[i] = one.schedule(newRunnable(), 1, TimeUnit.MILLISECONDS);
955	>	public void testInvokeAll4() throws Exception {
956	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
957	>	try (PoolCleaner cleaner = cleaner(e)) {
958	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
959	>	l.add(new NPETask());
960	>	List<Future<String>> futures = e.invokeAll(l);
961	>	assertEquals(1, futures.size());
962	>	try {
963	>	futures.get(0).get();
964	>	shouldThrow();
965	>	} catch (ExecutionException success) {
966	>	assertTrue(success.getCause() instanceof NullPointerException);
967		}
441	–	int max = 5;
442	–	if (tasks[4].cancel(true)) --max;
443	–	if (tasks[3].cancel(true)) --max;
444	–	one.purge();
445	–	long count = one.getTaskCount();
446	–	assertTrue(count > 0 && count <= max);
447	–	} finally {
448	–	one.shutdown();
968		}
969		}
970
971		/**
972	<	*  Test to verify shutDownNow returns a list
454	<	*  containing the correct number of elements
972	>	* invokeAll(c) returns results of all completed tasks
973		*/
974	<	public void testShutDownNow(){
975	<	ScheduledExecutor one = new ScheduledExecutor(1);
976	<	for(int i = 0; i < 5; i++)
977	<	one.schedule(newRunnable(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
978	<	List l = one.shutdownNow();
979	<	assertTrue(one.isShutdown());
980	<	assertTrue(l.size() > 0 && l.size() <= 5);
974	>	public void testInvokeAll5() throws Exception {
975	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
976	>	try (PoolCleaner cleaner = cleaner(e)) {
977	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
978	>	l.add(new StringTask());
979	>	l.add(new StringTask());
980	>	List<Future<String>> futures = e.invokeAll(l);
981	>	assertEquals(2, futures.size());
982	>	for (Future<String> future : futures)
983	>	assertSame(TEST_STRING, future.get());
984	>	}
985		}
986
987	<	public void testShutDown1(){
988	<	try {
989	<	ScheduledExecutor one = new ScheduledExecutor(1);
990	<	assertTrue(one.getExecuteExistingDelayedTasksAfterShutdownPolicy());
991	<	assertFalse(one.getContinueExistingPeriodicTasksAfterShutdownPolicy());
987	>	/**
988	>	* timed invokeAny(null) throws NPE
989	>	*/
990	>	public void testTimedInvokeAny1() throws Exception {
991	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
992	>	try (PoolCleaner cleaner = cleaner(e)) {
993	>	try {
994	>	e.invokeAny(null, MEDIUM_DELAY_MS, MILLISECONDS);
995	>	shouldThrow();
996	>	} catch (NullPointerException success) {}
997	>	}
998	>	}
999
1000	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1001	<	for(int i = 0; i < 5; i++)
1002	<	tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
1003	<	one.shutdown();
1004	<	BlockingQueue q = one.getQueue();
1005	<	for (Iterator it = q.iterator(); it.hasNext();) {
1006	<	ScheduledCancellable t = (ScheduledCancellable)it.next();
1007	<	assertFalse(t.isCancelled());
1008	<	}
1009	<	assertTrue(one.isShutdown());
1010	<	Thread.sleep(SHORT_DELAY_MS);
1011	<	for (int i = 0; i < 5; ++i) {
483	<	assertTrue(tasks[i].isDone());
484	<	assertFalse(tasks[i].isCancelled());
485	<	}
486	<
1000	>	/**
1001	>	* timed invokeAny(,,null) throws NPE
1002	>	*/
1003	>	public void testTimedInvokeAnyNullTimeUnit() throws Exception {
1004	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1005	>	try (PoolCleaner cleaner = cleaner(e)) {
1006	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1007	>	l.add(new StringTask());
1008	>	try {
1009	>	e.invokeAny(l, MEDIUM_DELAY_MS, null);
1010	>	shouldThrow();
1011	>	} catch (NullPointerException success) {}
1012		}
1013	<	catch(Exception ex) {
1014	<	fail("unexpected exception");
1013	>	}
1014	>
1015	>	/**
1016	>	* timed invokeAny(empty collection) throws IAE
1017	>	*/
1018	>	public void testTimedInvokeAny2() throws Exception {
1019	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1020	>	try (PoolCleaner cleaner = cleaner(e)) {
1021	>	try {
1022	>	e.invokeAny(new ArrayList<Callable<String>>(), MEDIUM_DELAY_MS, MILLISECONDS);
1023	>	shouldThrow();
1024	>	} catch (IllegalArgumentException success) {}
1025		}
1026		}
1027
1028	+	/**
1029	+	* timed invokeAny(c) throws NPE if c has null elements
1030	+	*/
1031	+	public void testTimedInvokeAny3() throws Exception {
1032	+	CountDownLatch latch = new CountDownLatch(1);
1033	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1034	+	try (PoolCleaner cleaner = cleaner(e)) {
1035	+	List<Callable<String>> l = new ArrayList<Callable<String>>();
1036	+	l.add(latchAwaitingStringTask(latch));
1037	+	l.add(null);
1038	+	try {
1039	+	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1040	+	shouldThrow();
1041	+	} catch (NullPointerException success) {}
1042	+	latch.countDown();
1043	+	}
1044	+	}
1045
1046	<	public void testShutDown2(){
1047	<	try {
1048	<	ScheduledExecutor one = new ScheduledExecutor(1);
1049	<	one.setExecuteExistingDelayedTasksAfterShutdownPolicy(false);
1050	<	ScheduledCancellable[] tasks = new ScheduledCancellable[5];
1051	<	for(int i = 0; i < 5; i++)
1052	<	tasks[i] = one.schedule(newNoopRunnable(), SHORT_DELAY_MS/2, TimeUnit.MILLISECONDS);
1053	<	one.shutdown();
1054	<	assertTrue(one.isShutdown());
1055	<	BlockingQueue q = one.getQueue();
1056	<	assertTrue(q.isEmpty());
1057	<	Thread.sleep(SHORT_DELAY_MS);
1058	<	assertTrue(one.isTerminated());
1046	>	/**
1047	>	* timed invokeAny(c) throws ExecutionException if no task completes
1048	>	*/
1049	>	public void testTimedInvokeAny4() throws Exception {
1050	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1051	>	try (PoolCleaner cleaner = cleaner(e)) {
1052	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1053	>	l.add(new NPETask());
1054	>	try {
1055	>	e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1056	>	shouldThrow();
1057	>	} catch (ExecutionException success) {
1058	>	assertTrue(success.getCause() instanceof NullPointerException);
1059	>	}
1060		}
1061	<	catch(Exception ex) {
1062	<	fail("unexpected exception");
1061	>	}
1062	>
1063	>	/**
1064	>	* timed invokeAny(c) returns result of some task
1065	>	*/
1066	>	public void testTimedInvokeAny5() throws Exception {
1067	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1068	>	try (PoolCleaner cleaner = cleaner(e)) {
1069	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1070	>	l.add(new StringTask());
1071	>	l.add(new StringTask());
1072	>	String result = e.invokeAny(l, MEDIUM_DELAY_MS, MILLISECONDS);
1073	>	assertSame(TEST_STRING, result);
1074		}
1075		}
1076
1077	+	/**
1078	+	* timed invokeAll(null) throws NPE
1079	+	*/
1080	+	public void testTimedInvokeAll1() throws Exception {
1081	+	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1082	+	try (PoolCleaner cleaner = cleaner(e)) {
1083	+	try {
1084	+	e.invokeAll(null, MEDIUM_DELAY_MS, MILLISECONDS);
1085	+	shouldThrow();
1086	+	} catch (NullPointerException success) {}
1087	+	}
1088	+	}
1089
1090	<	public void testShutDown3(){
1091	<	try {
1092	<	ScheduledExecutor one = new ScheduledExecutor(1);
1093	<	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(false);
1094	<	ScheduledCancellable task =
1095	<	one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1096	<	one.shutdown();
1097	<	assertTrue(one.isShutdown());
1098	<	BlockingQueue q = one.getQueue();
1099	<	assertTrue(q.isEmpty());
1100	<	Thread.sleep(SHORT_DELAY_MS);
1101	<	assertTrue(one.isTerminated());
1090	>	/**
1091	>	* timed invokeAll(,,null) throws NPE
1092	>	*/
1093	>	public void testTimedInvokeAllNullTimeUnit() throws Exception {
1094	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1095	>	try (PoolCleaner cleaner = cleaner(e)) {
1096	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1097	>	l.add(new StringTask());
1098	>	try {
1099	>	e.invokeAll(l, MEDIUM_DELAY_MS, null);
1100	>	shouldThrow();
1101	>	} catch (NullPointerException success) {}
1102		}
1103	<	catch(Exception ex) {
1104	<	fail("unexpected exception");
1103	>	}
1104	>
1105	>	/**
1106	>	* timed invokeAll(empty collection) returns empty collection
1107	>	*/
1108	>	public void testTimedInvokeAll2() throws Exception {
1109	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1110	>	try (PoolCleaner cleaner = cleaner(e)) {
1111	>	List<Future<String>> r = e.invokeAll(new ArrayList<Callable<String>>(),
1112	>	MEDIUM_DELAY_MS, MILLISECONDS);
1113	>	assertTrue(r.isEmpty());
1114		}
1115		}
1116
1117	<	public void testShutDown4(){
1118	<	ScheduledExecutor one = new ScheduledExecutor(1);
1119	<	try {
1120	<	one.setContinueExistingPeriodicTasksAfterShutdownPolicy(true);
1121	<	ScheduledCancellable task =
1122	<	one.scheduleAtFixedRate(newNoopRunnable(), 5, 5, TimeUnit.MILLISECONDS);
1123	<	assertFalse(task.isCancelled());
1124	<	one.shutdown();
1125	<	assertFalse(task.isCancelled());
1126	<	assertFalse(one.isTerminated());
1127	<	assertTrue(one.isShutdown());
1128	<	Thread.sleep(SHORT_DELAY_MS);
1129	<	assertFalse(task.isCancelled());
545	<	task.cancel(true);
546	<	assertTrue(task.isCancelled());
547	<	Thread.sleep(SHORT_DELAY_MS);
548	<	assertTrue(one.isTerminated());
1117	>	/**
1118	>	* timed invokeAll(c) throws NPE if c has null elements
1119	>	*/
1120	>	public void testTimedInvokeAll3() throws Exception {
1121	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1122	>	try (PoolCleaner cleaner = cleaner(e)) {
1123	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1124	>	l.add(new StringTask());
1125	>	l.add(null);
1126	>	try {
1127	>	e.invokeAll(l, MEDIUM_DELAY_MS, MILLISECONDS);
1128	>	shouldThrow();
1129	>	} catch (NullPointerException success) {}
1130		}
1131	<	catch(Exception ex) {
1132	<	fail("unexpected exception");
1131	>	}
1132	>
1133	>	/**
1134	>	* get of element of invokeAll(c) throws exception on failed task
1135	>	*/
1136	>	public void testTimedInvokeAll4() throws Exception {
1137	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1138	>	try (PoolCleaner cleaner = cleaner(e)) {
1139	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1140	>	l.add(new NPETask());
1141	>	List<Future<String>> futures =
1142	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1143	>	assertEquals(1, futures.size());
1144	>	try {
1145	>	futures.get(0).get();
1146	>	shouldThrow();
1147	>	} catch (ExecutionException success) {
1148	>	assertTrue(success.getCause() instanceof NullPointerException);
1149	>	}
1150		}
1151	<	finally {
1152	<	one.shutdownNow();
1151	>	}
1152	>
1153	>	/**
1154	>	* timed invokeAll(c) returns results of all completed tasks
1155	>	*/
1156	>	public void testTimedInvokeAll5() throws Exception {
1157	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1158	>	try (PoolCleaner cleaner = cleaner(e)) {
1159	>	List<Callable<String>> l = new ArrayList<Callable<String>>();
1160	>	l.add(new StringTask());
1161	>	l.add(new StringTask());
1162	>	List<Future<String>> futures =
1163	>	e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
1164	>	assertEquals(2, futures.size());
1165	>	for (Future<String> future : futures)
1166	>	assertSame(TEST_STRING, future.get());
1167	>	}
1168	>	}
1169	>
1170	>	/**
1171	>	* timed invokeAll(c) cancels tasks not completed by timeout
1172	>	*/
1173	>	public void testTimedInvokeAll6() throws Exception {
1174	>	final ExecutorService e = new ScheduledThreadPoolExecutor(2);
1175	>	try (PoolCleaner cleaner = cleaner(e)) {
1176	>	for (long timeout = timeoutMillis();;) {
1177	>	List<Callable<String>> tasks = new ArrayList<>();
1178	>	tasks.add(new StringTask("0"));
1179	>	tasks.add(Executors.callable(new LongPossiblyInterruptedRunnable(), TEST_STRING));
1180	>	tasks.add(new StringTask("2"));
1181	>	long startTime = System.nanoTime();
1182	>	List<Future<String>> futures =
1183	>	e.invokeAll(tasks, timeout, MILLISECONDS);
1184	>	assertEquals(tasks.size(), futures.size());
1185	>	assertTrue(millisElapsedSince(startTime) >= timeout);
1186	>	for (Future future : futures)
1187	>	assertTrue(future.isDone());
1188	>	assertTrue(futures.get(1).isCancelled());
1189	>	try {
1190	>	assertEquals("0", futures.get(0).get());
1191	>	assertEquals("2", futures.get(2).get());
1192	>	break;
1193	>	} catch (CancellationException retryWithLongerTimeout) {
1194	>	timeout *= 2;
1195	>	if (timeout >= LONG_DELAY_MS / 2)
1196	>	fail("expected exactly one task to be cancelled");
1197	>	}
1198	>	}
1199		}
1200		}
1201

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