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

Comparing jsr166/src/test/tck/ExecutorsTest.java (file contents):
Revision 1.3 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.21 by jsr166, Mon Nov 16 04:57:10 2009 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/licenses/publicdomain
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9
#	Line 10 | Line 11 | import junit.framework.*;
11		import java.util.*;
12		import java.util.concurrent.*;
13		import java.math.BigInteger;
14	+	import java.security.*;
15
16		public class ExecutorsTest extends JSR166TestCase{
15	–
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run (suite());
19		}
19	–
20	–
20		public static Test suite() {
21	<	return new TestSuite(ExecutorsTest.class);
21	>	return new TestSuite(ExecutorsTest.class);
22		}
23
24	<	/**
25	<	*   execute(Executor, Runnable) will throw
26	<	*  RejectedExecutionException Attempting to execute a runnable on
27	<	*  a full ThreadPool will cause such an exception here, up to 5
29	<	*  runnables are attempted on a pool capable on handling one
30	<	*  until it throws an exception
31	<	*/
32	<	public void testExecute1(){
33	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
34	<	try{
35	<
36	<	for(int i = 0; i < 5; ++i){
37	<	Executors.execute(p, new MediumRunnable(), Boolean.TRUE);
38	<	}
39	<	fail("should throw");
40	<	} catch(RejectedExecutionException success){}
41	<	joinPool(p);
42	<	}
24	>	static class TimedCallable<T> implements Callable<T> {
25	>	private final ExecutorService exec;
26	>	private final Callable<T> func;
27	>	private final long msecs;
28
29	<	/**
30	<	*   execute(Executor, Callable) will throw
31	<	*  RejectedExecutionException Attempting to execute a callable on
32	<	*  a full ThreadPool will cause such an exception here, up to 5
33	<	*  runnables are attempted on a pool capable on handling one
34	<	*  until it throws an exception
35	<	*/
36	<	public void testExecute2(){
37	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1, SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
38	<	try{
39	<	for(int i = 0; i < 5; ++i) {
40	<	Executors.execute(p, new SmallCallable());
29	>	TimedCallable(ExecutorService exec, Callable<T> func, long msecs) {
30	>	this.exec = exec;
31	>	this.func = func;
32	>	this.msecs = msecs;
33	>	}
34	>
35	>	public T call() throws Exception {
36	>	Future<T> ftask = exec.submit(func);
37	>	try {
38	>	return ftask.get(msecs, TimeUnit.MILLISECONDS);
39	>	} finally {
40	>	ftask.cancel(true);
41		}
42	<	fail("should throw");
58	<	}catch(RejectedExecutionException e){}
59	<	joinPool(p);
42	>	}
43		}
44
45
46	+	private static class Fib implements Callable<BigInteger> {
47	+	private final BigInteger n;
48	+	Fib(long n) {
49	+	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
50	+	this.n = BigInteger.valueOf(n);
51	+	}
52	+	public BigInteger call() {
53	+	BigInteger f1 = BigInteger.ONE;
54	+	BigInteger f2 = f1;
55	+	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
56	+	BigInteger t = f1.add(f2);
57	+	f1 = f2;
58	+	f2 = t;
59	+	}
60	+	return f1;
61	+	}
62	+	};
63	+
64		/**
65	<	*   invoke(Executor, Runnable) throws InterruptedException
66	<	*  A single use of invoke starts that will wait long enough
67	<	*  for the invoking thread to be interrupted
68	<	*/
69	<	public void testInvoke2(){
70	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
71	<	Thread t = new Thread(new Runnable() {
72	<	public void run(){
72	<	try{
73	<	Executors.invoke(p,new Runnable(){
74	<	public void run(){
75	<	try{
76	<	Thread.sleep(MEDIUM_DELAY_MS);
77	<	fail("should throw");
78	<	}catch(InterruptedException e){
79	<	}
80	<	}
81	<	});
82	<	} catch(InterruptedException success){
83	<	} catch(Exception e) {
84	<	fail("unexpected exception");
85	<	}
86	<
87	<	}
88	<	});
89	<	try{
90	<	t.start();
91	<	Thread.sleep(SHORT_DELAY_MS);
92	<	t.interrupt();
93	<	}catch(Exception e){
94	<	fail("unexpected exception");
95	<	}
96	<	joinPool(p);
65	>	* A newCachedThreadPool can execute runnables
66	>	*/
67	>	public void testNewCachedThreadPool1() {
68	>	ExecutorService e = Executors.newCachedThreadPool();
69	>	e.execute(new NoOpRunnable());
70	>	e.execute(new NoOpRunnable());
71	>	e.execute(new NoOpRunnable());
72	>	joinPool(e);
73		}
74
75		/**
76	<	*   invoke(Executor, Runnable) will throw
77	<	*  ExecutionException An ExecutionException occurs when the
78	<	*  underlying Runnable throws an exception, here the
79	<	*  DivideByZeroException will cause an ExecutionException
80	<	*/
81	<	public void testInvoke3(){
82	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
83	<	try{
108	<	Runnable r = new Runnable(){
109	<	public void run(){
110	<	int i = 5/0;
111	<	}
112	<	};
113	<
114	<	for(int i =0; i < 5; i++){
115	<	Executors.invoke(p,r);
116	<	}
117	<
118	<	fail("should throw");
119	<	} catch(ExecutionException success){
120	<	} catch(Exception e){
121	<	fail("should throw EE");
122	<	}
123	<	joinPool(p);
76	>	* A newCachedThreadPool with given ThreadFactory can execute runnables
77	>	*/
78	>	public void testNewCachedThreadPool2() {
79	>	ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
80	>	e.execute(new NoOpRunnable());
81	>	e.execute(new NoOpRunnable());
82	>	e.execute(new NoOpRunnable());
83	>	joinPool(e);
84		}
85
126	–
127	–
86		/**
87	<	*   invoke(Executor, Callable) throws
88	<	*  InterruptedException A single use of invoke starts that will
89	<	*  wait long enough for the invoking thread to be interrupted
90	<	*/
91	<	public void testInvoke5(){
92	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
93	<
94	<	final Callable c = new Callable(){
95	<	public Object call(){
96	<	try{
139	<	Executors.invoke(p, new SmallCallable());
140	<	fail("should throw");
141	<	}catch(InterruptedException e){}
142	<	catch(RejectedExecutionException e2){}
143	<	catch(ExecutionException e3){}
144	<	return Boolean.TRUE;
145	<	}
146	<	};
87	>	* A newCachedThreadPool with null ThreadFactory throws NPE
88	>	*/
89	>	public void testNewCachedThreadPool3() {
90	>	try {
91	>	ExecutorService e = Executors.newCachedThreadPool(null);
92	>	shouldThrow();
93	>	}
94	>	catch (NullPointerException success) {
95	>	}
96	>	}
97
98
99	<
100	<	Thread t = new Thread(new Runnable(){
101	<	public void run(){
102	<	try{
103	<	c.call();
104	<	}catch(Exception e){}
105	<	}
106	<	});
107	<	try{
158	<	t.start();
159	<	Thread.sleep(SHORT_DELAY_MS);
160	<	t.interrupt();
161	<	t.join();
162	<	}catch(InterruptedException e){
163	<	fail("unexpected exception");
164	<	}
165	<
166	<	joinPool(p);
99	>	/**
100	>	* A new SingleThreadExecutor can execute runnables
101	>	*/
102	>	public void testNewSingleThreadExecutor1() {
103	>	ExecutorService e = Executors.newSingleThreadExecutor();
104	>	e.execute(new NoOpRunnable());
105	>	e.execute(new NoOpRunnable());
106	>	e.execute(new NoOpRunnable());
107	>	joinPool(e);
108		}
109
110		/**
111	<	*   invoke(Executor, Callable) will throw ExecutionException
112	<	*  An ExecutionException occurs when the underlying Runnable throws
113	<	*  an exception, here the DivideByZeroException will cause an ExecutionException
114	<	*/
115	<	public void testInvoke6(){
116	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,SHORT_DELAY_MS, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
117	<
118	<	try{
178	<	Callable c = new Callable(){
179	<	public Object call(){
180	<	int i = 5/0;
181	<	return Boolean.TRUE;
182	<	}
183	<	};
184	<
185	<	for(int i =0; i < 5; i++){
186	<	Executors.invoke(p,c);
187	<	}
188	<
189	<	fail("should throw");
190	<	}catch(RejectedExecutionException e){}
191	<	catch(InterruptedException e2){}
192	<	catch(ExecutionException e3){}
193	<	joinPool(p);
111	>	* A new SingleThreadExecutor with given ThreadFactory can execute runnables
112	>	*/
113	>	public void testNewSingleThreadExecutor2() {
114	>	ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
115	>	e.execute(new NoOpRunnable());
116	>	e.execute(new NoOpRunnable());
117	>	e.execute(new NoOpRunnable());
118	>	joinPool(e);
119		}
120
121	<	public void testExecuteRunnable () {
121	>	/**
122	>	* A new SingleThreadExecutor with null ThreadFactory throws NPE
123	>	*/
124	>	public void testNewSingleThreadExecutor3() {
125		try {
126	<	Executor e = new DirectExecutor();
127	<	Task task = new Task();
200	<
201	<	assertFalse("task should not be complete", task.isCompleted());
202	<
203	<	Future<String> future = Executors.execute(e, task, TEST_STRING);
204	<	String result = future.get();
205	<
206	<	assertTrue("task should be complete", task.isCompleted());
207	<	assertSame("should return test string", TEST_STRING, result);
126	>	ExecutorService e = Executors.newSingleThreadExecutor(null);
127	>	shouldThrow();
128		}
129	<	catch (ExecutionException ex) {
210	<	fail("Unexpected exception");
211	<	}
212	<	catch (InterruptedException ex) {
213	<	fail("Unexpected exception");
129	>	catch (NullPointerException success) {
130		}
131		}
132
133	<	public void testInvokeRunnable () {
133	>	/**
134	>	* A new SingleThreadExecutor cannot be casted to concrete implementation
135	>	*/
136	>	public void testCastNewSingleThreadExecutor() {
137	>	ExecutorService e = Executors.newSingleThreadExecutor();
138		try {
139	<	Executor e = new DirectExecutor();
140	<	Task task = new Task();
139	>	ThreadPoolExecutor tpe = (ThreadPoolExecutor)e;
140	>	} catch (ClassCastException success) {
141	>	} finally {
142	>	joinPool(e);
143	>	}
144	>	}
145
222	–	assertFalse("task should not be complete", task.isCompleted());
146
147	<	Executors.invoke(e, task);
147	>	/**
148	>	* A new newFixedThreadPool can execute runnables
149	>	*/
150	>	public void testNewFixedThreadPool1() {
151	>	ExecutorService e = Executors.newFixedThreadPool(2);
152	>	e.execute(new NoOpRunnable());
153	>	e.execute(new NoOpRunnable());
154	>	e.execute(new NoOpRunnable());
155	>	joinPool(e);
156	>	}
157
158	<	assertTrue("task should be complete", task.isCompleted());
159	<	}
160	<	catch (ExecutionException ex) {
161	<	fail("Unexpected exception");
158	>	/**
159	>	* A new newFixedThreadPool with given ThreadFactory can execute runnables
160	>	*/
161	>	public void testNewFixedThreadPool2() {
162	>	ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
163	>	e.execute(new NoOpRunnable());
164	>	e.execute(new NoOpRunnable());
165	>	e.execute(new NoOpRunnable());
166	>	joinPool(e);
167	>	}
168	>
169	>	/**
170	>	* A new newFixedThreadPool with null ThreadFactory throws NPE
171	>	*/
172	>	public void testNewFixedThreadPool3() {
173	>	try {
174	>	ExecutorService e = Executors.newFixedThreadPool(2, null);
175	>	shouldThrow();
176		}
177	<	catch (InterruptedException ex) {
232	<	fail("Unexpected exception");
177	>	catch (NullPointerException success) {
178		}
179		}
180
181	<	public void testExecuteCallable () {
181	>	/**
182	>	* A new newFixedThreadPool with 0 threads throws IAE
183	>	*/
184	>	public void testNewFixedThreadPool4() {
185		try {
186	<	Executor e = new DirectExecutor();
187	<	Future<String> future = Executors.execute(e, new StringTask());
240	<	String result = future.get();
241	<
242	<	assertSame("should return test string", TEST_STRING, result);
243	<	}
244	<	catch (ExecutionException ex) {
245	<	fail("Unexpected exception");
186	>	ExecutorService e = Executors.newFixedThreadPool(0);
187	>	shouldThrow();
188		}
189	<	catch (InterruptedException ex) {
248	<	fail("Unexpected exception");
189	>	catch (IllegalArgumentException success) {
190		}
191		}
192
252	–	public void testInvokeCallable () {
253	–	try {
254	–	Executor e = new DirectExecutor();
255	–	String result = Executors.invoke(e, new StringTask());
193
194	<	assertSame("should return test string", TEST_STRING, result);
194	>	/**
195	>	* An unconfigurable newFixedThreadPool can execute runnables
196	>	*/
197	>	public void testunconfigurableExecutorService() {
198	>	ExecutorService e = Executors.unconfigurableExecutorService(Executors.newFixedThreadPool(2));
199	>	e.execute(new NoOpRunnable());
200	>	e.execute(new NoOpRunnable());
201	>	e.execute(new NoOpRunnable());
202	>	joinPool(e);
203	>	}
204	>
205	>	/**
206	>	* unconfigurableExecutorService(null) throws NPE
207	>	*/
208	>	public void testunconfigurableExecutorServiceNPE() {
209	>	try {
210	>	ExecutorService e = Executors.unconfigurableExecutorService(null);
211		}
212	<	catch (ExecutionException ex) {
213	<	fail("Unexpected exception" );
212	>	catch (NullPointerException success) {
213	>	}
214	>	}
215	>
216	>	/**
217	>	* unconfigurableScheduledExecutorService(null) throws NPE
218	>	*/
219	>	public void testunconfigurableScheduledExecutorServiceNPE() {
220	>	try {
221	>	ExecutorService e = Executors.unconfigurableScheduledExecutorService(null);
222		}
223	<	catch (InterruptedException ex) {
263	<	fail("Unexpected exception");
223	>	catch (NullPointerException success) {
224		}
225		}
226
267	–	private static final String TEST_STRING = "a test string";
227
228	<	private static class Task implements Runnable {
229	<	public void run() { completed = true; }
230	<	public boolean isCompleted() { return completed; }
231	<	public void reset() { completed = false; }
232	<	private boolean completed = false;
228	>	/**
229	>	* a newSingleThreadScheduledExecutor successfully runs delayed task
230	>	*/
231	>	public void testNewSingleThreadScheduledExecutor() {
232	>	try {
233	>	TrackedCallable callable = new TrackedCallable();
234	>	ScheduledExecutorService p1 = Executors.newSingleThreadScheduledExecutor();
235	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
236	>	assertFalse(callable.done);
237	>	Thread.sleep(MEDIUM_DELAY_MS);
238	>	assertTrue(callable.done);
239	>	assertEquals(Boolean.TRUE, f.get());
240	>	joinPool(p1);
241	>	} catch (RejectedExecutionException e){}
242	>	catch (Exception e){
243	>	e.printStackTrace();
244	>	unexpectedException();
245	>	}
246		}
247
248	<	private static class StringTask implements Callable<String> {
249	<	public String call() { return TEST_STRING; }
248	>	/**
249	>	* a newScheduledThreadPool successfully runs delayed task
250	>	*/
251	>	public void testnewScheduledThreadPool() {
252	>	try {
253	>	TrackedCallable callable = new TrackedCallable();
254	>	ScheduledExecutorService p1 = Executors.newScheduledThreadPool(2);
255	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
256	>	assertFalse(callable.done);
257	>	Thread.sleep(MEDIUM_DELAY_MS);
258	>	assertTrue(callable.done);
259	>	assertEquals(Boolean.TRUE, f.get());
260	>	joinPool(p1);
261	>	} catch (RejectedExecutionException e){}
262	>	catch (Exception e){
263	>	e.printStackTrace();
264	>	unexpectedException();
265	>	}
266		}
267
268	<	static class DirectExecutor implements Executor {
269	<	public void execute(Runnable r) {
270	<	r.run();
268	>	/**
269	>	* an unconfigurable  newScheduledThreadPool successfully runs delayed task
270	>	*/
271	>	public void testunconfigurableScheduledExecutorService() {
272	>	try {
273	>	TrackedCallable callable = new TrackedCallable();
274	>	ScheduledExecutorService p1 = Executors.unconfigurableScheduledExecutorService(Executors.newScheduledThreadPool(2));
275	>	Future f = p1.schedule(callable, SHORT_DELAY_MS, TimeUnit.MILLISECONDS);
276	>	assertFalse(callable.done);
277	>	Thread.sleep(MEDIUM_DELAY_MS);
278	>	assertTrue(callable.done);
279	>	assertEquals(Boolean.TRUE, f.get());
280	>	joinPool(p1);
281	>	} catch (RejectedExecutionException e){}
282	>	catch (Exception e){
283	>	e.printStackTrace();
284	>	unexpectedException();
285		}
286		}
287
288		/**
289	<	* Check that timeouts from execute will time out if they compute
288	<	* too long.
289	>	*  timeouts from execute will time out if they compute too long.
290		*/
290	–
291		public void testTimedCallable() {
292		int N = 10000;
293		ExecutorService executor = Executors.newSingleThreadExecutor();
294		List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
295		try {
296		long startTime = System.currentTimeMillis();
297	<
297	>
298		long i = 0;
299		while (tasks.size() < N) {
300		tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
301		i += 10;
302		}
303	<
303	>
304		int iters = 0;
305		BigInteger sum = BigInteger.ZERO;
306		for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
#	Line 313 | Line 313 | public class ExecutorsTest extends JSR16
313		return;
314		}
315		catch (Exception e) {
316	<	fail("unexpected exception: " + e);
316	>	unexpectedException();
317		}
318		}
319		// if by chance we didn't ever time out, total time must be small
#	Line 325 | Line 325 | public class ExecutorsTest extends JSR16
325		}
326		}
327
328	<
329	<	static class TimedCallable<T> implements Callable<T> {
330	<	private final Executor exec;
331	<	private final Callable<T> func;
332	<	private final long msecs;
333	<
334	<	TimedCallable(Executor exec, Callable<T> func, long msecs) {
335	<	this.exec = exec;
336	<	this.func = func;
337	<	this.msecs = msecs;
328	>
329	>	/**
330	>	* ThreadPoolExecutor using defaultThreadFactory has
331	>	* specified group, priority, daemon status, and name
332	>	*/
333	>	public void testDefaultThreadFactory() {
334	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
335	>	Runnable r = new Runnable() {
336	>	public void run() {
337	>	try {
338	>	Thread current = Thread.currentThread();
339	>	threadAssertTrue(!current.isDaemon());
340	>	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
341	>	ThreadGroup g = current.getThreadGroup();
342	>	SecurityManager s = System.getSecurityManager();
343	>	if (s != null)
344	>	threadAssertTrue(g == s.getThreadGroup());
345	>	else
346	>	threadAssertTrue(g == egroup);
347	>	String name = current.getName();
348	>	threadAssertTrue(name.endsWith("thread-1"));
349	>	} catch (SecurityException ok) {
350	>	// Also pass if not allowed to change setting
351	>	}
352	>	}
353	>	};
354	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
355	>
356	>	e.execute(r);
357	>	try {
358	>	e.shutdown();
359	>	} catch (SecurityException ok) {
360		}
361	<
362	<	public T call() throws Exception {
363	<	Future<T> ftask = Executors.execute(exec, func);
364	<	try {
365	<	return ftask.get(msecs, TimeUnit.MILLISECONDS);
366	<	} finally {
367	<	ftask.cancel(true);
346	<	}
361	>
362	>	try {
363	>	Thread.sleep(SHORT_DELAY_MS);
364	>	} catch (Exception eX) {
365	>	unexpectedException();
366	>	} finally {
367	>	joinPool(e);
368		}
369		}
370
371	+	/**
372	+	* ThreadPoolExecutor using privilegedThreadFactory has
373	+	* specified group, priority, daemon status, name,
374	+	* access control context and context class loader
375	+	*/
376	+	public void testPrivilegedThreadFactory() {
377	+	Policy savedPolicy = null;
378	+	try {
379	+	savedPolicy = Policy.getPolicy();
380	+	AdjustablePolicy policy = new AdjustablePolicy();
381	+	policy.addPermission(new RuntimePermission("getContextClassLoader"));
382	+	policy.addPermission(new RuntimePermission("setContextClassLoader"));
383	+	Policy.setPolicy(policy);
384	+	} catch (AccessControlException ok) {
385	+	return;
386	+	}
387	+	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
388	+	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
389	+	final AccessControlContext thisacc = AccessController.getContext();
390	+	Runnable r = new Runnable() {
391	+	public void run() {
392	+	try {
393	+	Thread current = Thread.currentThread();
394	+	threadAssertTrue(!current.isDaemon());
395	+	threadAssertTrue(current.getPriority() <= Thread.NORM_PRIORITY);
396	+	ThreadGroup g = current.getThreadGroup();
397	+	SecurityManager s = System.getSecurityManager();
398	+	if (s != null)
399	+	threadAssertTrue(g == s.getThreadGroup());
400	+	else
401	+	threadAssertTrue(g == egroup);
402	+	String name = current.getName();
403	+	threadAssertTrue(name.endsWith("thread-1"));
404	+	threadAssertTrue(thisccl == current.getContextClassLoader());
405	+	threadAssertTrue(thisacc.equals(AccessController.getContext()));
406	+	} catch (SecurityException ok) {
407	+	// Also pass if not allowed to change settings
408	+	}
409	+	}
410	+	};
411	+	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
412
413	<	private static class Fib implements Callable<BigInteger> {
414	<	private final BigInteger n;
415	<	Fib(long n) {
416	<	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
417	<	this.n = BigInteger.valueOf(n);
413	>	Policy.setPolicy(savedPolicy);
414	>	e.execute(r);
415	>	try {
416	>	e.shutdown();
417	>	} catch (SecurityException ok) {
418		}
419	<	public BigInteger call() {
420	<	BigInteger f1 = BigInteger.ONE;
421	<	BigInteger f2 = f1;
422	<	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
423	<	BigInteger t = f1.add(f2);
424	<	f1 = f2;
363	<	f2 = t;
364	<	}
365	<	return f1;
419	>	try {
420	>	Thread.sleep(SHORT_DELAY_MS);
421	>	} catch (Exception ex) {
422	>	unexpectedException();
423	>	} finally {
424	>	joinPool(e);
425		}
367	–	};
426
427	+	}
428	+
429	+	void checkCCL() {
430	+	SecurityManager sm = System.getSecurityManager();
431	+	if (sm != null) {
432	+	sm.checkPermission(new RuntimePermission("setContextClassLoader"));
433	+	sm.checkPermission(new RuntimePermission("getClassLoader"));
434	+	}
435	+	}
436	+
437	+	class CheckCCL implements Callable<Object> {
438	+	public Object call() {
439	+	checkCCL();
440	+	return null;
441	+	}
442	+	}
443	+
444	+
445	+	/**
446	+	* Without class loader permissions, creating
447	+	* privilegedCallableUsingCurrentClassLoader throws ACE
448	+	*/
449	+	public void testCreatePrivilegedCallableUsingCCLWithNoPrivs() {
450	+	Policy savedPolicy = null;
451	+	try {
452	+	savedPolicy = Policy.getPolicy();
453	+	AdjustablePolicy policy = new AdjustablePolicy();
454	+	Policy.setPolicy(policy);
455	+	} catch (AccessControlException ok) {
456	+	return;
457	+	}
458	+
459	+	// Check if program still has too many permissions to run test
460	+	try {
461	+	checkCCL();
462	+	// too many privileges to test; so return
463	+	Policy.setPolicy(savedPolicy);
464	+	return;
465	+	} catch (AccessControlException ok) {
466	+	}
467	+
468	+	try {
469	+	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
470	+	shouldThrow();
471	+	} catch (AccessControlException success) {
472	+	} catch (Exception ex) {
473	+	unexpectedException();
474	+	}
475	+	finally {
476	+	Policy.setPolicy(savedPolicy);
477	+	}
478	+	}
479	+
480	+	/**
481	+	* With class loader permissions, calling
482	+	* privilegedCallableUsingCurrentClassLoader does not throw ACE
483	+	*/
484	+	public void testprivilegedCallableUsingCCLWithPrivs() {
485	+	Policy savedPolicy = null;
486	+	try {
487	+	savedPolicy = Policy.getPolicy();
488	+	AdjustablePolicy policy = new AdjustablePolicy();
489	+	policy.addPermission(new RuntimePermission("getContextClassLoader"));
490	+	policy.addPermission(new RuntimePermission("setContextClassLoader"));
491	+	Policy.setPolicy(policy);
492	+	} catch (AccessControlException ok) {
493	+	return;
494	+	}
495	+
496	+	try {
497	+	Callable task = Executors.privilegedCallableUsingCurrentClassLoader(new NoOpCallable());
498	+	task.call();
499	+	} catch (Exception ex) {
500	+	unexpectedException();
501	+	}
502	+	finally {
503	+	Policy.setPolicy(savedPolicy);
504	+	}
505	+	}
506	+
507	+	/**
508	+	* Without permissions, calling privilegedCallable throws ACE
509	+	*/
510	+	public void testprivilegedCallableWithNoPrivs() {
511	+	Callable task;
512	+	Policy savedPolicy = null;
513	+	AdjustablePolicy policy = null;
514	+	AccessControlContext noprivAcc = null;
515	+	try {
516	+	savedPolicy = Policy.getPolicy();
517	+	policy = new AdjustablePolicy();
518	+	Policy.setPolicy(policy);
519	+	noprivAcc = AccessController.getContext();
520	+	task = Executors.privilegedCallable(new CheckCCL());
521	+	Policy.setPolicy(savedPolicy);
522	+	} catch (AccessControlException ok) {
523	+	return; // program has too few permissions to set up test
524	+	}
525	+
526	+	// Make sure that program doesn't have too many permissions
527	+	try {
528	+	AccessController.doPrivileged(new PrivilegedAction() {
529	+	public Object run() {
530	+	checkCCL();
531	+	return null;
532	+	}}, noprivAcc);
533	+	// too many permssions; skip test
534	+	return;
535	+	} catch (AccessControlException ok) {
536	+	}
537	+
538	+	try {
539	+	task.call();
540	+	shouldThrow();
541	+	} catch (AccessControlException success) {
542	+	} catch (Exception ex) {
543	+	unexpectedException();
544	+	}
545	+	}
546	+
547	+	/**
548	+	* With permissions, calling privilegedCallable succeeds
549	+	*/
550	+	public void testprivilegedCallableWithPrivs() {
551	+	Policy savedPolicy = null;
552	+	try {
553	+	savedPolicy = Policy.getPolicy();
554	+	AdjustablePolicy policy = new AdjustablePolicy();
555	+	policy.addPermission(new RuntimePermission("getContextClassLoader"));
556	+	policy.addPermission(new RuntimePermission("setContextClassLoader"));
557	+	Policy.setPolicy(policy);
558	+	} catch (AccessControlException ok) {
559	+	return;
560	+	}
561	+
562	+	Callable task = Executors.privilegedCallable(new CheckCCL());
563	+	try {
564	+	task.call();
565	+	} catch (Exception ex) {
566	+	unexpectedException();
567	+	} finally {
568	+	Policy.setPolicy(savedPolicy);
569	+	}
570	+	}
571	+
572	+	/**
573	+	* callable(Runnable) returns null when called
574	+	*/
575	+	public void testCallable1() {
576	+	try {
577	+	Callable c = Executors.callable(new NoOpRunnable());
578	+	assertNull(c.call());
579	+	} catch (Exception ex) {
580	+	unexpectedException();
581	+	}
582	+
583	+	}
584	+
585	+	/**
586	+	* callable(Runnable, result) returns result when called
587	+	*/
588	+	public void testCallable2() {
589	+	try {
590	+	Callable c = Executors.callable(new NoOpRunnable(), one);
591	+	assertEquals(one, c.call());
592	+	} catch (Exception ex) {
593	+	unexpectedException();
594	+	}
595	+	}
596	+
597	+	/**
598	+	* callable(PrivilegedAction) returns its result when called
599	+	*/
600	+	public void testCallable3() {
601	+	try {
602	+	Callable c = Executors.callable(new PrivilegedAction() {
603	+	public Object run() { return one; }});
604	+	assertEquals(one, c.call());
605	+	} catch (Exception ex) {
606	+	unexpectedException();
607	+	}
608	+	}
609	+
610	+	/**
611	+	* callable(PrivilegedExceptionAction) returns its result when called
612	+	*/
613	+	public void testCallable4() {
614	+	try {
615	+	Callable c = Executors.callable(new PrivilegedExceptionAction() {
616	+	public Object run() { return one; }});
617	+	assertEquals(one, c.call());
618	+	} catch (Exception ex) {
619	+	unexpectedException();
620	+	}
621	+	}
622	+
623	+
624	+	/**
625	+	* callable(null Runnable) throws NPE
626	+	*/
627	+	public void testCallableNPE1() {
628	+	try {
629	+	Runnable r = null;
630	+	Callable c = Executors.callable(r);
631	+	} catch (NullPointerException success) {
632	+	}
633	+	}
634	+
635	+	/**
636	+	* callable(null, result) throws NPE
637	+	*/
638	+	public void testCallableNPE2() {
639	+	try {
640	+	Runnable r = null;
641	+	Callable c = Executors.callable(r, one);
642	+	} catch (NullPointerException success) {
643	+	}
644	+	}
645	+
646	+	/**
647	+	* callable(null PrivilegedAction) throws NPE
648	+	*/
649	+	public void testCallableNPE3() {
650	+	try {
651	+	PrivilegedAction r = null;
652	+	Callable c = Executors.callable(r);
653	+	} catch (NullPointerException success) {
654	+	}
655	+	}
656	+
657	+	/**
658	+	* callable(null PrivilegedExceptionAction) throws NPE
659	+	*/
660	+	public void testCallableNPE4() {
661	+	try {
662	+	PrivilegedExceptionAction r = null;
663	+	Callable c = Executors.callable(r);
664	+	} catch (NullPointerException success) {
665	+	}
666	+	}
667
668
669		}

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