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

Comparing jsr166/src/test/tck/ExecutorsTest.java (file contents):
Revision 1.4 by dl, Sat Sep 20 18:20:07 2003 UTC vs.
Revision 1.51 by jsr166, Mon Dec 16 22:55:54 2019 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 static java.util.concurrent.TimeUnit.MILLISECONDS;
10
11	<	import junit.framework.*;
12	<	import java.util.*;
13	<	import java.util.concurrent.*;
14	<	import java.math.BigInteger;
11	>	import java.security.AccessControlContext;
12	>	import java.security.AccessControlException;
13	>	import java.security.AccessController;
14	>	import java.security.PrivilegedAction;
15	>	import java.security.PrivilegedExceptionAction;
16	>	import java.util.ArrayList;
17	>	import java.util.List;
18	>	import java.util.concurrent.Callable;
19	>	import java.util.concurrent.CountDownLatch;
20	>	import java.util.concurrent.Executors;
21	>	import java.util.concurrent.ExecutorService;
22	>	import java.util.concurrent.Future;
23	>	import java.util.concurrent.ScheduledExecutorService;
24	>	import java.util.concurrent.ThreadPoolExecutor;
25
26	<	public class ExecutorsTest extends JSR166TestCase{
27	<
26	>	import junit.framework.Test;
27	>	import junit.framework.TestSuite;
28	>
29	>	public class ExecutorsTest extends JSR166TestCase {
30		public static void main(String[] args) {
31	<	junit.textui.TestRunner.run (suite());
31	>	main(suite(), args);
32		}
33		public static Test suite() {
34	<	return new TestSuite(ExecutorsTest.class);
34	>	return new TestSuite(ExecutorsTest.class);
35		}
36
37	<	private static final String TEST_STRING = "a test string";
37	>	/**
38	>	* A newCachedThreadPool can execute runnables
39	>	*/
40	>	public void testNewCachedThreadPool1() {
41	>	final ExecutorService e = Executors.newCachedThreadPool();
42	>	try (PoolCleaner cleaner = cleaner(e)) {
43	>	e.execute(new NoOpRunnable());
44	>	e.execute(new NoOpRunnable());
45	>	e.execute(new NoOpRunnable());
46	>	}
47	>	}
48
49	<	private static class MyTask implements Runnable {
50	<	public void run() { completed = true; }
51	<	public boolean isCompleted() { return completed; }
52	<	public void reset() { completed = false; }
53	<	private boolean completed = false;
49	>	/**
50	>	* A newCachedThreadPool with given ThreadFactory can execute runnables
51	>	*/
52	>	public void testNewCachedThreadPool2() {
53	>	final ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
54	>	try (PoolCleaner cleaner = cleaner(e)) {
55	>	e.execute(new NoOpRunnable());
56	>	e.execute(new NoOpRunnable());
57	>	e.execute(new NoOpRunnable());
58	>	}
59		}
60
61	<	private static class StringTask implements Callable<String> {
62	<	public String call() { return TEST_STRING; }
61	>	/**
62	>	* A newCachedThreadPool with null ThreadFactory throws NPE
63	>	*/
64	>	public void testNewCachedThreadPool3() {
65	>	try {
66	>	ExecutorService unused = Executors.newCachedThreadPool(null);
67	>	shouldThrow();
68	>	} catch (NullPointerException success) {}
69		}
70
71	<	static class DirectExecutor implements Executor {
72	<	public void execute(Runnable r) {
73	<	r.run();
71	>	/**
72	>	* A new SingleThreadExecutor can execute runnables
73	>	*/
74	>	public void testNewSingleThreadExecutor1() {
75	>	final ExecutorService e = Executors.newSingleThreadExecutor();
76	>	try (PoolCleaner cleaner = cleaner(e)) {
77	>	e.execute(new NoOpRunnable());
78	>	e.execute(new NoOpRunnable());
79	>	e.execute(new NoOpRunnable());
80		}
81		}
82
83	<	static class TimedCallable<T> implements Callable<T> {
84	<	private final Executor exec;
85	<	private final Callable<T> func;
86	<	private final long msecs;
87	<
88	<	TimedCallable(Executor exec, Callable<T> func, long msecs) {
89	<	this.exec = exec;
90	<	this.func = func;
91	<	this.msecs = msecs;
83	>	/**
84	>	* A new SingleThreadExecutor with given ThreadFactory can execute runnables
85	>	*/
86	>	public void testNewSingleThreadExecutor2() {
87	>	final ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
88	>	try (PoolCleaner cleaner = cleaner(e)) {
89	>	e.execute(new NoOpRunnable());
90	>	e.execute(new NoOpRunnable());
91	>	e.execute(new NoOpRunnable());
92		}
93	<
94	<	public T call() throws Exception {
95	<	Future<T> ftask = Executors.execute(exec, func);
93	>	}
94	>
95	>	/**
96	>	* A new SingleThreadExecutor with null ThreadFactory throws NPE
97	>	*/
98	>	public void testNewSingleThreadExecutor3() {
99	>	try {
100	>	ExecutorService unused = Executors.newSingleThreadExecutor(null);
101	>	shouldThrow();
102	>	} catch (NullPointerException success) {}
103	>	}
104	>
105	>	/**
106	>	* A new SingleThreadExecutor cannot be casted to concrete implementation
107	>	*/
108	>	public void testCastNewSingleThreadExecutor() {
109	>	final ExecutorService e = Executors.newSingleThreadExecutor();
110	>	try (PoolCleaner cleaner = cleaner(e)) {
111		try {
112	<	return ftask.get(msecs, TimeUnit.MILLISECONDS);
113	<	} finally {
114	<	ftask.cancel(true);
59	<	}
112	>	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
113	>	shouldThrow();
114	>	} catch (ClassCastException success) {}
115		}
116		}
117
118	+	/**
119	+	* A new newFixedThreadPool can execute runnables
120	+	*/
121	+	public void testNewFixedThreadPool1() {
122	+	final ExecutorService e = Executors.newFixedThreadPool(2);
123	+	try (PoolCleaner cleaner = cleaner(e)) {
124	+	e.execute(new NoOpRunnable());
125	+	e.execute(new NoOpRunnable());
126	+	e.execute(new NoOpRunnable());
127	+	}
128	+	}
129
130	<	private static class Fib implements Callable<BigInteger> {
131	<	private final BigInteger n;
132	<	Fib(long n) {
133	<	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
134	<	this.n = BigInteger.valueOf(n);
135	<	}
136	<	public BigInteger call() {
137	<	BigInteger f1 = BigInteger.ONE;
138	<	BigInteger f2 = f1;
73	<	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
74	<	BigInteger t = f1.add(f2);
75	<	f1 = f2;
76	<	f2 = t;
77	<	}
78	<	return f1;
130	>	/**
131	>	* A new newFixedThreadPool with given ThreadFactory can execute runnables
132	>	*/
133	>	public void testNewFixedThreadPool2() {
134	>	final ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
135	>	try (PoolCleaner cleaner = cleaner(e)) {
136	>	e.execute(new NoOpRunnable());
137	>	e.execute(new NoOpRunnable());
138	>	e.execute(new NoOpRunnable());
139		}
140	<	};
140	>	}
141
142	+	/**
143	+	* A new newFixedThreadPool with null ThreadFactory throws
144	+	* NullPointerException
145	+	*/
146	+	public void testNewFixedThreadPool3() {
147	+	try {
148	+	ExecutorService unused = Executors.newFixedThreadPool(2, null);
149	+	shouldThrow();
150	+	} catch (NullPointerException success) {}
151	+	}
152
153	+	/**
154	+	* A new newFixedThreadPool with 0 threads throws IllegalArgumentException
155	+	*/
156	+	public void testNewFixedThreadPool4() {
157	+	try {
158	+	ExecutorService unused = Executors.newFixedThreadPool(0);
159	+	shouldThrow();
160	+	} catch (IllegalArgumentException success) {}
161	+	}
162
163		/**
164	<	*   execute(Executor, Runnable) will throw
86	<	*  RejectedExecutionException Attempting to execute a runnable on
87	<	*  a full ThreadPool will cause such an exception here, up to 5
88	<	*  runnables are attempted on a pool capable on handling one
89	<	*  until it throws an exception
164	>	* An unconfigurable newFixedThreadPool can execute runnables
165		*/
166	<	public void testExecute1() {
167	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
166	>	public void testUnconfigurableExecutorService() {
167	>	final ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
168	>	try (PoolCleaner cleaner = cleaner(e)) {
169	>	e.execute(new NoOpRunnable());
170	>	e.execute(new NoOpRunnable());
171	>	e.execute(new NoOpRunnable());
172	>	}
173	>	}
174	>
175	>	/**
176	>	* unconfigurableExecutorService(null) throws NPE
177	>	*/
178	>	public void testUnconfigurableExecutorServiceNPE() {
179		try {
180	<
181	<	for(int i = 0; i < 5; ++i){
96	<	Executors.execute(p, new MediumRunnable(), Boolean.TRUE);
97	<	}
180	>	ExecutorService unused =
181	>	Executors.unconfigurableExecutorService(null);
182		shouldThrow();
183	<	} catch(RejectedExecutionException success){}
100	<	joinPool(p);
183	>	} catch (NullPointerException success) {}
184		}
185
186		/**
187	<	*   execute(Executor, Callable) will throw
105	<	*  RejectedExecutionException Attempting to execute a callable on
106	<	*  a full ThreadPool will cause such an exception here, up to 5
107	<	*  runnables are attempted on a pool capable on handling one
108	<	*  until it throws an exception
187	>	* unconfigurableScheduledExecutorService(null) throws NPE
188		*/
189	<	public void testExecute2() {
111	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
189	>	public void testUnconfigurableScheduledExecutorServiceNPE() {
190		try {
191	<	for(int i = 0; i < 5; ++i) {
192	<	Executors.execute(p, new SmallCallable());
115	<	}
191	>	ExecutorService unused =
192	>	Executors.unconfigurableScheduledExecutorService(null);
193		shouldThrow();
194	<	} catch(RejectedExecutionException e){}
118	<	joinPool(p);
194	>	} catch (NullPointerException success) {}
195		}
196
197	+	/**
198	+	* a newSingleThreadScheduledExecutor successfully runs delayed task
199	+	*/
200	+	public void testNewSingleThreadScheduledExecutor() throws Exception {
201	+	final ScheduledExecutorService p = Executors.newSingleThreadScheduledExecutor();
202	+	try (PoolCleaner cleaner = cleaner(p)) {
203	+	final CountDownLatch proceed = new CountDownLatch(1);
204	+	final Runnable task = new CheckedRunnable() {
205	+	public void realRun() {
206	+	await(proceed);
207	+	}};
208	+	long startTime = System.nanoTime();
209	+	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
210	+	timeoutMillis(), MILLISECONDS);
211	+	assertFalse(f.isDone());
212	+	proceed.countDown();
213	+	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
214	+	assertSame(Boolean.TRUE, f.get());
215	+	assertTrue(f.isDone());
216	+	assertFalse(f.isCancelled());
217	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
218	+	}
219	+	}
220	+
221	+	/**
222	+	* a newScheduledThreadPool successfully runs delayed task
223	+	*/
224	+	public void testNewScheduledThreadPool() throws Exception {
225	+	final ScheduledExecutorService p = Executors.newScheduledThreadPool(2);
226	+	try (PoolCleaner cleaner = cleaner(p)) {
227	+	final CountDownLatch proceed = new CountDownLatch(1);
228	+	final Runnable task = new CheckedRunnable() {
229	+	public void realRun() {
230	+	await(proceed);
231	+	}};
232	+	long startTime = System.nanoTime();
233	+	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
234	+	timeoutMillis(), MILLISECONDS);
235	+	assertFalse(f.isDone());
236	+	proceed.countDown();
237	+	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
238	+	assertSame(Boolean.TRUE, f.get());
239	+	assertTrue(f.isDone());
240	+	assertFalse(f.isCancelled());
241	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
242	+	}
243	+	}
244	+
245	+	/**
246	+	* an unconfigurable newScheduledThreadPool successfully runs delayed task
247	+	*/
248	+	public void testUnconfigurableScheduledExecutorService() throws Exception {
249	+	final ScheduledExecutorService p =
250	+	Executors.unconfigurableScheduledExecutorService
251	+	(Executors.newScheduledThreadPool(2));
252	+	try (PoolCleaner cleaner = cleaner(p)) {
253	+	final CountDownLatch proceed = new CountDownLatch(1);
254	+	final Runnable task = new CheckedRunnable() {
255	+	public void realRun() {
256	+	await(proceed);
257	+	}};
258	+	long startTime = System.nanoTime();
259	+	Future f = p.schedule(Executors.callable(task, Boolean.TRUE),
260	+	timeoutMillis(), MILLISECONDS);
261	+	assertFalse(f.isDone());
262	+	proceed.countDown();
263	+	assertSame(Boolean.TRUE, f.get(LONG_DELAY_MS, MILLISECONDS));
264	+	assertSame(Boolean.TRUE, f.get());
265	+	assertTrue(f.isDone());
266	+	assertFalse(f.isCancelled());
267	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis());
268	+	}
269	+	}
270	+
271	+	/**
272	+	* Future.get on submitted tasks will time out if they compute too long.
273	+	*/
274	+	public void testTimedCallable() throws Exception {
275	+	final ExecutorService[] executors = {
276	+	Executors.newSingleThreadExecutor(),
277	+	Executors.newCachedThreadPool(),
278	+	Executors.newFixedThreadPool(2),
279	+	Executors.newScheduledThreadPool(2),
280	+	};
281	+
282	+	final Runnable sleeper = new CheckedInterruptedRunnable() {
283	+	public void realRun() throws InterruptedException {
284	+	delay(LONG_DELAY_MS);
285	+	}};
286	+
287	+	List<Thread> threads = new ArrayList<>();
288	+	for (final ExecutorService executor : executors) {
289	+	threads.add(newStartedThread(new CheckedRunnable() {
290	+	public void realRun() {
291	+	Future future = executor.submit(sleeper);
292	+	assertFutureTimesOut(future);
293	+	}}));
294	+	}
295	+	for (Thread thread : threads)
296	+	awaitTermination(thread);
297	+	for (ExecutorService executor : executors)
298	+	joinPool(executor);
299	+	}
300
301		/**
302	<	*   invoke(Executor, Runnable) throws InterruptedException
303	<	*  A single use of invoke starts that will wait long enough
304	<	*  for the invoking thread to be interrupted
305	<	*/
306	<	public void testInvoke2() {
307	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
308	<	Thread t = new Thread(new Runnable() {
309	<	public void run() {
310	<	try {
311	<	Executors.invoke(p,new Runnable() {
312	<	public void run() {
313	<	try {
314	<	Thread.sleep(MEDIUM_DELAY_MS);
315	<	shouldThrow();
316	<	} catch(InterruptedException e){
317	<	}
318	<	}
319	<	});
141	<	} catch(InterruptedException success){
142	<	} catch(Exception e) {
143	<	unexpectedException();
144	<	}
145	<
302	>	* ThreadPoolExecutor using defaultThreadFactory has
303	>	* specified group, priority, daemon status, and name
304	>	*/
305	>	public void testDefaultThreadFactory() throws Exception {
306	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
307	>	final CountDownLatch done = new CountDownLatch(1);
308	>	Runnable r = new CheckedRunnable() {
309	>	public void realRun() {
310	>	try {
311	>	Thread current = Thread.currentThread();
312	>	assertFalse(current.isDaemon());
313	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
314	>	SecurityManager s = System.getSecurityManager();
315	>	assertSame(current.getThreadGroup(),
316	>	(s == null) ? egroup : s.getThreadGroup());
317	>	assertTrue(current.getName().endsWith("thread-1"));
318	>	} catch (SecurityException ok) {
319	>	// Also pass if not allowed to change setting
320		}
321	<	});
322	<	try {
323	<	t.start();
324	<	Thread.sleep(SHORT_DELAY_MS);
325	<	t.interrupt();
326	<	} catch(Exception e){
153	<	unexpectedException();
321	>	done.countDown();
322	>	}};
323	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
324	>	try (PoolCleaner cleaner = cleaner(e)) {
325	>	e.execute(r);
326	>	await(done);
327		}
155	–	joinPool(p);
328		}
329
330		/**
331	<	*   invoke(Executor, Runnable) will throw
332	<	*  ExecutionException An ExecutionException occurs when the
333	<	*  underlying Runnable throws an exception, here the
334	<	*  DivideByZeroException will cause an ExecutionException
335	<	*/
336	<	public void testInvoke3() {
337	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
338	<	try {
339	<	Runnable r = new Runnable() {
340	<	public void run() {
341	<	int i = 5/0;
342	<	}
343	<	};
344	<
345	<	for(int i =0; i < 5; i++){
346	<	Executors.invoke(p,r);
331	>	* ThreadPoolExecutor using privilegedThreadFactory has
332	>	* specified group, priority, daemon status, name,
333	>	* access control context and context class loader
334	>	*/
335	>	public void testPrivilegedThreadFactory() throws Exception {
336	>	final CountDownLatch done = new CountDownLatch(1);
337	>	Runnable r = new CheckedRunnable() {
338	>	public void realRun() throws Exception {
339	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
340	>	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
341	>	final AccessControlContext thisacc = AccessController.getContext();
342	>	Runnable r = new CheckedRunnable() {
343	>	public void realRun() {
344	>	Thread current = Thread.currentThread();
345	>	assertFalse(current.isDaemon());
346	>	assertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
347	>	SecurityManager s = System.getSecurityManager();
348	>	assertSame(current.getThreadGroup(),
349	>	(s == null) ? egroup : s.getThreadGroup());
350	>	assertTrue(current.getName().endsWith("thread-1"));
351	>	assertSame(thisccl, current.getContextClassLoader());
352	>	assertEquals(thisacc, AccessController.getContext());
353	>	done.countDown();
354	>	}};
355	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
356	>	try (PoolCleaner cleaner = cleaner(e)) {
357	>	e.execute(r);
358	>	await(done);
359	>	}
360	>	}};
361	>
362	>	runWithPermissions(r,
363	>	new RuntimePermission("getClassLoader"),
364	>	new RuntimePermission("setContextClassLoader"),
365	>	new RuntimePermission("modifyThread"));
366	>	}
367	>
368	>	boolean haveCCLPermissions() {
369	>	SecurityManager sm = System.getSecurityManager();
370	>	if (sm != null) {
371	>	try {
372	>	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
373	>	sm.checkPermission(new RuntimePermission("getClassLoader"));
374	>	} catch (AccessControlException e) {
375	>	return false;
376		}
176	–
177	–	shouldThrow();
178	–	} catch(ExecutionException success){
179	–	} catch(Exception e){
180	–	unexpectedException();
377		}
378	<	joinPool(p);
378	>	return true;
379		}
380
381	+	void checkCCL() {
382	+	SecurityManager sm = System.getSecurityManager();
383	+	if (sm != null) {
384	+	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
385	+	sm.checkPermission(new RuntimePermission("getClassLoader"));
386	+	}
387	+	}
388
389	+	class CheckCCL implements Callable<Object> {
390	+	public Object call() {
391	+	checkCCL();
392	+	return null;
393	+	}
394	+	}
395
396		/**
397	<	*   invoke(Executor, Callable) throws
398	<	*  InterruptedException A single use of invoke starts that will
190	<	*  wait long enough for the invoking thread to be interrupted
397	>	* Without class loader permissions, creating
398	>	* privilegedCallableUsingCurrentClassLoader throws ACE
399		*/
400	<	public void testInvoke5() {
401	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
402	<
403	<	final Callable c = new Callable() {
404	<	public Object call() {
405	<	try {
406	<	Executors.invoke(p, new SmallCallable());
407	<	shouldThrow();
408	<	} catch(InterruptedException e){}
409	<	catch(RejectedExecutionException e2){}
410	<	catch(ExecutionException e3){}
411	<	return Boolean.TRUE;
412	<	}
205	<	};
400	>	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
401	>	Runnable r = new CheckedRunnable() {
402	>	public void realRun() throws Exception {
403	>	if (System.getSecurityManager() == null)
404	>	return;
405	>	try {
406	>	Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
407	>	shouldThrow();
408	>	} catch (AccessControlException success) {}
409	>	}};
410	>
411	>	runWithoutPermissions(r);
412	>	}
413
414	+	/**
415	+	* With class loader permissions, calling
416	+	* privilegedCallableUsingCurrentClassLoader does not throw ACE
417	+	*/
418	+	public void testPrivilegedCallableUsingCCLWithPrivs() throws Exception {
419	+	Runnable r = new CheckedRunnable() {
420	+	public void realRun() throws Exception {
421	+	Executors.privilegedCallableUsingCurrentClassLoader
422	+	(new NoOpCallable())
423	+	.call();
424	+	}};
425
426	<
427	<	Thread t = new Thread(new Runnable() {
428	<	public void run() {
211	<	try {
212	<	c.call();
213	<	} catch(Exception e){}
214	<	}
215	<	});
216	<	try {
217	<	t.start();
218	<	Thread.sleep(SHORT_DELAY_MS);
219	<	t.interrupt();
220	<	t.join();
221	<	} catch(InterruptedException e){
222	<	unexpectedException();
223	<	}
224	<
225	<	joinPool(p);
426	>	runWithPermissions(r,
427	>	new RuntimePermission("getClassLoader"),
428	>	new RuntimePermission("setContextClassLoader"));
429		}
430
431		/**
432	<	*   invoke(Executor, Callable) will throw ExecutionException
230	<	*  An ExecutionException occurs when the underlying Runnable throws
231	<	*  an exception, here the DivideByZeroException will cause an ExecutionException
432	>	* Without permissions, calling privilegedCallable throws ACE
433		*/
434	<	public void testInvoke6() {
435	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
434	>	public void testPrivilegedCallableWithNoPrivs() throws Exception {
435	>	// Avoid classloader-related SecurityExceptions in swingui.TestRunner
436	>	Executors.privilegedCallable(new CheckCCL());
437
438	<	try {
439	<	Callable c = new Callable() {
440	<	public Object call() {
441	<	int i = 5/0;
442	<	return Boolean.TRUE;
443	<	}
444	<	};
445	<
446	<	for(int i =0; i < 5; i++){
447	<	Executors.invoke(p,c);
448	<	}
449	<
450	<	shouldThrow();
451	<	} catch(RejectedExecutionException e){}
452	<	catch(InterruptedException e2){}
453	<	catch(ExecutionException e3){}
454	<	joinPool(p);
438	>	Runnable r = new CheckedRunnable() {
439	>	public void realRun() throws Exception {
440	>	if (System.getSecurityManager() == null)
441	>	return;
442	>	Callable task = Executors.privilegedCallable(new CheckCCL());
443	>	try {
444	>	task.call();
445	>	shouldThrow();
446	>	} catch (AccessControlException success) {}
447	>	}};
448	>
449	>	runWithoutPermissions(r);
450	>
451	>	// It seems rather difficult to test that the
452	>	// AccessControlContext of the privilegedCallable is used
453	>	// instead of its caller.  Below is a failed attempt to do
454	>	// that, which does not work because the AccessController
455	>	// cannot capture the internal state of the current Policy.
456	>	// It would be much more work to differentiate based on,
457	>	// e.g. CodeSource.
458	>
459	>	//         final AccessControlContext[] noprivAcc = new AccessControlContext[1];
460	>	//         final Callable[] task = new Callable[1];
461	>
462	>	//         runWithPermissions
463	>	//             (new CheckedRunnable() {
464	>	//                 public void realRun() {
465	>	//                     if (System.getSecurityManager() == null)
466	>	//                         return;
467	>	//                     noprivAcc[0] = AccessController.getContext();
468	>	//                     task[0] = Executors.privilegedCallable(new CheckCCL());
469	>	//                     try {
470	>	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
471	>	//                                                           public Void run() {
472	>	//                                                               checkCCL();
473	>	//                                                               return null;
474	>	//                                                           }}, noprivAcc[0]);
475	>	//                         shouldThrow();
476	>	//                     } catch (AccessControlException success) {}
477	>	//                 }});
478	>
479	>	//         runWithPermissions
480	>	//             (new CheckedRunnable() {
481	>	//                 public void realRun() throws Exception {
482	>	//                     if (System.getSecurityManager() == null)
483	>	//                         return;
484	>	//                     // Verify that we have an underprivileged ACC
485	>	//                     try {
486	>	//                         AccessController.doPrivileged(new PrivilegedAction<Void>() {
487	>	//                                                           public Void run() {
488	>	//                                                               checkCCL();
489	>	//                                                               return null;
490	>	//                                                           }}, noprivAcc[0]);
491	>	//                         shouldThrow();
492	>	//                     } catch (AccessControlException success) {}
493	>
494	>	//                     try {
495	>	//                         task[0].call();
496	>	//                         shouldThrow();
497	>	//                     } catch (AccessControlException success) {}
498	>	//                 }},
499	>	//              new RuntimePermission("getClassLoader"),
500	>	//              new RuntimePermission("setContextClassLoader"));
501	>	}
502	>
503	>	/**
504	>	* With permissions, calling privilegedCallable succeeds
505	>	*/
506	>	public void testPrivilegedCallableWithPrivs() throws Exception {
507	>	Runnable r = new CheckedRunnable() {
508	>	public void realRun() throws Exception {
509	>	Executors.privilegedCallable(new CheckCCL()).call();
510	>	}};
511	>
512	>	runWithPermissions(r,
513	>	new RuntimePermission("getClassLoader"),
514	>	new RuntimePermission("setContextClassLoader"));
515	>	}
516	>
517	>	/**
518	>	* callable(Runnable) returns null when called
519	>	*/
520	>	public void testCallable1() throws Exception {
521	>	Callable c = Executors.callable(new NoOpRunnable());
522	>	assertNull(c.call());
523	>	}
524	>
525	>	/**
526	>	* callable(Runnable, result) returns result when called
527	>	*/
528	>	public void testCallable2() throws Exception {
529	>	Callable c = Executors.callable(new NoOpRunnable(), one);
530	>	assertSame(one, c.call());
531	>	}
532	>
533	>	/**
534	>	* callable(PrivilegedAction) returns its result when called
535	>	*/
536	>	public void testCallable3() throws Exception {
537	>	Callable c = Executors.callable(new PrivilegedAction() {
538	>	public Object run() { return one; }});
539	>	assertSame(one, c.call());
540	>	}
541	>
542	>	/**
543	>	* callable(PrivilegedExceptionAction) returns its result when called
544	>	*/
545	>	public void testCallable4() throws Exception {
546	>	Callable c = Executors.callable(new PrivilegedExceptionAction() {
547	>	public Object run() { return one; }});
548	>	assertSame(one, c.call());
549		}
550
551		/**
552	<	*
552	>	* callable(null Runnable) throws NPE
553		*/
554	<	public void testExecuteRunnable () {
554	>	public void testCallableNPE1() {
555		try {
556	<	Executor e = new DirectExecutor();
557	<	MyTask task = new MyTask();
558	<	assertFalse(task.isCompleted());
263	<	Future<String> future = Executors.execute(e, task, TEST_STRING);
264	<	String result = future.get();
265	<	assertTrue(task.isCompleted());
266	<	assertSame(TEST_STRING, result);
267	<	}
268	<	catch (ExecutionException ex) {
269	<	unexpectedException();
270	<	}
271	<	catch (InterruptedException ex) {
272	<	unexpectedException();
273	<	}
556	>	Callable unused = Executors.callable((Runnable) null);
557	>	shouldThrow();
558	>	} catch (NullPointerException success) {}
559		}
560
561		/**
562	<	*
562	>	* callable(null, result) throws NPE
563		*/
564	<	public void testInvokeRunnable () {
564	>	public void testCallableNPE2() {
565		try {
566	<	Executor e = new DirectExecutor();
567	<	MyTask task = new MyTask();
568	<	assertFalse(task.isCompleted());
284	<	Executors.invoke(e, task);
285	<	assertTrue(task.isCompleted());
286	<	}
287	<	catch (ExecutionException ex) {
288	<	unexpectedException();
289	<	}
290	<	catch (InterruptedException ex) {
291	<	unexpectedException();
292	<	}
566	>	Callable unused = Executors.callable((Runnable) null, one);
567	>	shouldThrow();
568	>	} catch (NullPointerException success) {}
569		}
570
571		/**
572	<	*
572	>	* callable(null PrivilegedAction) throws NPE
573		*/
574	<	public void testExecuteCallable () {
574	>	public void testCallableNPE3() {
575		try {
576	<	Executor e = new DirectExecutor();
577	<	Future<String> future = Executors.execute(e, new StringTask());
578	<	String result = future.get();
303	<	assertSame(TEST_STRING, result);
304	<	}
305	<	catch (ExecutionException ex) {
306	<	unexpectedException();
307	<	}
308	<	catch (InterruptedException ex) {
309	<	unexpectedException();
310	<	}
576	>	Callable unused = Executors.callable((PrivilegedAction) null);
577	>	shouldThrow();
578	>	} catch (NullPointerException success) {}
579		}
580
581		/**
582	<	*
582	>	* callable(null PrivilegedExceptionAction) throws NPE
583		*/
584	<	public void testInvokeCallable () {
584	>	public void testCallableNPE4() {
585		try {
586	<	Executor e = new DirectExecutor();
587	<	String result = Executors.invoke(e, new StringTask());
586	>	Callable unused = Executors.callable((PrivilegedExceptionAction) null);
587	>	shouldThrow();
588	>	} catch (NullPointerException success) {}
589	>	}
590
591	<	assertSame(TEST_STRING, result);
592	<	}
593	<	catch (ExecutionException ex) {
594	<	unexpectedException();
595	<	}
596	<	catch (InterruptedException ex) {
597	<	unexpectedException();
591	>	/**
592	>	* callable(runnable, x).toString() contains toString of wrapped task
593	>	*/
594	>	public void testCallable_withResult_toString() {
595	>	if (testImplementationDetails) {
596	>	Runnable r = () -> {};
597	>	Callable<String> c = Executors.callable(r, "");
598	>	assertEquals(
599	>	identityString(c) + "[Wrapped task = " + r.toString() + "]",
600	>	c.toString());
601		}
602		}
603
604		/**
605	<	*  timeouts from execute will time out if they compute too long.
605	>	* callable(runnable).toString() contains toString of wrapped task
606		*/
607	<	public void testTimedCallable() {
608	<	int N = 10000;
609	<	ExecutorService executor = Executors.newSingleThreadExecutor();
610	<	List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
611	<	try {
612	<	long startTime = System.currentTimeMillis();
613	<
341	<	long i = 0;
342	<	while (tasks.size() < N) {
343	<	tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
344	<	i += 10;
345	<	}
346	<
347	<	int iters = 0;
348	<	BigInteger sum = BigInteger.ZERO;
349	<	for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
350	<	try {
351	<	++iters;
352	<	sum = sum.add(it.next().call());
353	<	}
354	<	catch (TimeoutException success) {
355	<	assertTrue(iters > 0);
356	<	return;
357	<	}
358	<	catch (Exception e) {
359	<	unexpectedException();
360	<	}
361	<	}
362	<	// if by chance we didn't ever time out, total time must be small
363	<	long elapsed = System.currentTimeMillis() - startTime;
364	<	assertTrue(elapsed < N);
365	<	}
366	<	finally {
367	<	joinPool(executor);
607	>	public void testCallable_toString() {
608	>	if (testImplementationDetails) {
609	>	Runnable r = () -> {};
610	>	Callable<Object> c = Executors.callable(r);
611	>	assertEquals(
612	>	identityString(c) + "[Wrapped task = " + r.toString() + "]",
613	>	c.toString());
614		}
615		}
616
617	<
618	<
617	>	/**
618	>	* privilegedCallable(callable).toString() contains toString of wrapped task
619	>	*/
620	>	public void testPrivilegedCallable_toString() {
621	>	if (testImplementationDetails) {
622	>	Callable<String> c = () -> "";
623	>	Callable<String> priv = Executors.privilegedCallable(c);
624	>	assertEquals(
625	>	identityString(priv) + "[Wrapped task = " + c.toString() + "]",
626	>	priv.toString());
627	>	}
628	>	}
629
630	+	/**
631	+	* privilegedCallableUsingCurrentClassLoader(callable).toString()
632	+	* contains toString of wrapped task
633	+	*/
634	+	public void testPrivilegedCallableUsingCurrentClassLoader_toString() {
635	+	if (testImplementationDetails) {
636	+	Callable<String> c = () -> "";
637	+	Callable<String> priv = Executors.privilegedCallableUsingCurrentClassLoader(c);
638	+	assertEquals(
639	+	identityString(priv) + "[Wrapped task = " + c.toString() + "]",
640	+	priv.toString());
641	+	}
642	+	}
643		}

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