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

Comparing jsr166/src/test/tck/ExecutorsTest.java (file contents):
Revision 1.1 by dl, Sun Aug 31 19:24:55 2003 UTC vs.
Revision 1.10 by tim, Wed Dec 10 01:51:12 2003 UTC

#	Line 9 | Line 9
9		import junit.framework.*;
10		import java.util.*;
11		import java.util.concurrent.*;
12	+	import java.math.BigInteger;
13	+	import java.security.*;
14
15	<	public class ExecutorsTest extends TestCase{
14	<
15	>	public class ExecutorsTest extends JSR166TestCase{
16		public static void main(String[] args) {
17	<	junit.textui.TestRunner.run (suite());
17	>	junit.textui.TestRunner.run (suite());
18		}
18	–
19	–
19		public static Test suite() {
20	<	return new TestSuite(ExecutorsTest.class);
20	>	return new TestSuite(ExecutorsTest.class);
21		}
22
23	<	private static long SHORT_DELAY_MS = 100;
24	<	private static long MEDIUM_DELAY_MS = 1000;
25	<	private static long LONG_DELAY_MS = 10000;
26	<
27	<	class SleepRun implements Runnable {
28	<	public void run() {
29	<	try{
30	<	Thread.sleep(MEDIUM_DELAY_MS);
31	<	} catch(InterruptedException e){
32	<	fail("unexpected exception");
23	>	static class TimedCallable<T> implements Callable<T> {
24	>	private final ExecutorService exec;
25	>	private final Callable<T> func;
26	>	private final long msecs;
27	>
28	>	TimedCallable(ExecutorService exec, Callable<T> func, long msecs) {
29	>	this.exec = exec;
30	>	this.func = func;
31	>	this.msecs = msecs;
32	>	}
33	>
34	>	public T call() throws Exception {
35	>	Future<T> ftask = exec.submit(func);
36	>	try {
37	>	return ftask.get(msecs, TimeUnit.MILLISECONDS);
38	>	} finally {
39	>	ftask.cancel(true);
40		}
41		}
42		}
37	–
43
44	<	class SleepCall implements Callable {
45	<	public Object call(){
46	<	try{
47	<	Thread.sleep(MEDIUM_DELAY_MS);
48	<	}catch(InterruptedException e){
49	<	fail("unexpected exception");
44	>
45	>	private static class Fib implements Callable<BigInteger> {
46	>	private final BigInteger n;
47	>	Fib(long n) {
48	>	if (n < 0) throw new IllegalArgumentException("need non-negative arg, but got " + n);
49	>	this.n = BigInteger.valueOf(n);
50	>	}
51	>	public BigInteger call() {
52	>	BigInteger f1 = BigInteger.ONE;
53	>	BigInteger f2 = f1;
54	>	for (BigInteger i = BigInteger.ZERO; i.compareTo(n) < 0; i = i.add(BigInteger.ONE)) {
55	>	BigInteger t = f1.add(f2);
56	>	f1 = f2;
57	>	f2 = t;
58		}
59	<	return Boolean.TRUE;
59	>	return f1;
60		}
61	<	}
49	<
61	>	};
62
63	+	/**
64	+	* A newCachedThreadPool can execute runnables
65	+	*/
66	+	public void testNewCachedThreadPool1() {
67	+	ExecutorService e = Executors.newCachedThreadPool();
68	+	e.execute(new NoOpRunnable());
69	+	e.execute(new NoOpRunnable());
70	+	e.execute(new NoOpRunnable());
71	+	e.shutdown();
72	+	}
73
74		/**
75	<	*  Test to verify execute(Executor, Runnable) will throw
54	<	*  RejectedExecutionException Attempting to execute a runnable on
55	<	*  a full ThreadPool will cause such an exception here, up to 5
56	<	*  runnables are attempted on a pool capable on handling one
57	<	*  until it throws an exception
75	>	* A newCachedThreadPool with given ThreadFactory can execute runnables
76		*/
77	<	public void testExecute1(){
78	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
79	<	try{
80	<
81	<	for(int i = 0; i < 5; ++i){
82	<	Executors.execute(p, new SleepRun(), Boolean.TRUE);
65	<	}
66	<	fail("should throw");
67	<	} catch(RejectedExecutionException success){}
68	<	p.shutdownNow();
77	>	public void testNewCachedThreadPool2() {
78	>	ExecutorService e = Executors.newCachedThreadPool(new SimpleThreadFactory());
79	>	e.execute(new NoOpRunnable());
80	>	e.execute(new NoOpRunnable());
81	>	e.execute(new NoOpRunnable());
82	>	e.shutdown();
83		}
84
85		/**
86	<	*  Test to verify execute(Executor, Callable) will throw
87	<	*  RejectedExecutionException Attempting to execute a callable on
88	<	*  a full ThreadPool will cause such an exception here, up to 5
89	<	*  runnables are attempted on a pool capable on handling one
90	<	*  until it throws an exception
91	<	*/
92	<	public void testExecute2(){
93	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L, TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(1));
94	<	try{
81	<	for(int i = 0; i < 5; ++i) {
82	<	Executors.execute(p, new SleepCall());
83	<	}
84	<	fail("should throw");
85	<	}catch(RejectedExecutionException e){}
86	<	p.shutdownNow();
86	>	* A newCachedThreadPool with null ThreadFactory throws NPE
87	>	*/
88	>	public void testNewCachedThreadPool3() {
89	>	try {
90	>	ExecutorService e = Executors.newCachedThreadPool(null);
91	>	shouldThrow();
92	>	}
93	>	catch(NullPointerException success) {
94	>	}
95		}
96
97
98		/**
99	<	*  Test to verify invoke(Executor, Runnable) throws InterruptedException
100	<	*  A single use of invoke starts that will wait long enough
101	<	*  for the invoking thread to be interrupted
102	<	*/
103	<	public void testInvoke2(){
104	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
105	<	Thread t = new Thread(new Runnable() {
106	<	public void run(){
99	<	try{
100	<	Executors.invoke(p,new Runnable(){
101	<	public void run(){
102	<	try{
103	<	Thread.sleep(MEDIUM_DELAY_MS);
104	<	fail("should throw");
105	<	}catch(InterruptedException e){
106	<	}
107	<	}
108	<	});
109	<	} catch(InterruptedException success){
110	<	} catch(Exception e) {
111	<	fail("unexpected exception");
112	<	}
113	<
114	<	}
115	<	});
116	<	try{
117	<	t.start();
118	<	Thread.sleep(SHORT_DELAY_MS);
119	<	t.interrupt();
120	<	}catch(Exception e){
121	<	fail("unexpected exception");
122	<	}
123	<	p.shutdownNow();
99	>	* A new SingleThreadExecutor can execute runnables
100	>	*/
101	>	public void testNewSingleThreadExecutor1() {
102	>	ExecutorService e = Executors.newSingleThreadExecutor();
103	>	e.execute(new NoOpRunnable());
104	>	e.execute(new NoOpRunnable());
105	>	e.execute(new NoOpRunnable());
106	>	e.shutdown();
107		}
108
109		/**
110	<	*  Test to verify invoke(Executor, Runnable) will throw
111	<	*  ExecutionException An ExecutionException occurs when the
112	<	*  underlying Runnable throws an exception, here the
113	<	*  DivideByZeroException will cause an ExecutionException
114	<	*/
115	<	public void testInvoke3(){
116	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
117	<	try{
135	<	Runnable r = new Runnable(){
136	<	public void run(){
137	<	int i = 5/0;
138	<	}
139	<	};
140	<
141	<	for(int i =0; i < 5; i++){
142	<	Executors.invoke(p,r);
143	<	}
144	<
145	<	fail("should throw");
146	<	} catch(ExecutionException success){
147	<	} catch(Exception e){
148	<	fail("should throw EE");
149	<	}
150	<	p.shutdownNow();
110	>	* A new SingleThreadExecutor with given ThreadFactory can execute runnables
111	>	*/
112	>	public void testNewSingleThreadExecutor2() {
113	>	ExecutorService e = Executors.newSingleThreadExecutor(new SimpleThreadFactory());
114	>	e.execute(new NoOpRunnable());
115	>	e.execute(new NoOpRunnable());
116	>	e.execute(new NoOpRunnable());
117	>	e.shutdown();
118		}
119
153	–
154	–
120		/**
121	<	*  Test to verify invoke(Executor, Callable) throws
157	<	*  InterruptedException A single use of invoke starts that will
158	<	*  wait long enough for the invoking thread to be interrupted
121	>	* A new SingleThreadExecutor with null ThreadFactory throws NPE
122		*/
123	<	public void testInvoke5(){
124	<	final ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
125	<
126	<	final Callable c = new Callable(){
127	<	public Object call(){
128	<	try{
166	<	Executors.invoke(p, new SleepCall());
167	<	fail("should throw");
168	<	}catch(InterruptedException e){}
169	<	catch(RejectedExecutionException e2){}
170	<	catch(ExecutionException e3){}
171	<	return Boolean.TRUE;
172	<	}
173	<	};
174	<
175	<
176	<
177	<	Thread t = new Thread(new Runnable(){
178	<	public void run(){
179	<	try{
180	<	c.call();
181	<	}catch(Exception e){}
182	<	}
183	<	});
184	<	try{
185	<	t.start();
186	<	Thread.sleep(SHORT_DELAY_MS);
187	<	t.interrupt();
188	<	t.join();
189	<	}catch(InterruptedException e){
190	<	fail("unexpected exception");
123	>	public void testNewSingleThreadExecutor3() {
124	>	try {
125	>	ExecutorService e = Executors.newSingleThreadExecutor(null);
126	>	shouldThrow();
127	>	}
128	>	catch(NullPointerException success) {
129		}
192	–
193	–	p.shutdownNow();
130		}
131
132		/**
133	<	*  Test to verify invoke(Executor, Callable) will throw ExecutionException
198	<	*  An ExecutionException occurs when the underlying Runnable throws
199	<	*  an exception, here the DivideByZeroException will cause an ExecutionException
133	>	* A new newFixedThreadPool can execute runnables
134		*/
135	<	public void testInvoke6(){
136	<	ThreadPoolExecutor p = new ThreadPoolExecutor(1,1,100L,TimeUnit.MILLISECONDS, new ArrayBlockingQueue<Runnable>(10));
135	>	public void testNewFixedThreadPool1() {
136	>	ExecutorService e = Executors.newFixedThreadPool(2);
137	>	e.execute(new NoOpRunnable());
138	>	e.execute(new NoOpRunnable());
139	>	e.execute(new NoOpRunnable());
140	>	e.shutdown();
141	>	}
142
143	<	try{
144	<	Callable c = new Callable(){
145	<	public Object call(){
146	<	int i = 5/0;
147	<	return Boolean.TRUE;
148	<	}
149	<	};
150	<
151	<	for(int i =0; i < 5; i++){
213	<	Executors.invoke(p,c);
214	<	}
215	<
216	<	fail("should throw");
217	<	}catch(RejectedExecutionException e){}
218	<	catch(InterruptedException e2){}
219	<	catch(ExecutionException e3){}
220	<	p.shutdownNow();
143	>	/**
144	>	* A new newFixedThreadPool with given ThreadFactory can execute runnables
145	>	*/
146	>	public void testNewFixedThreadPool2() {
147	>	ExecutorService e = Executors.newFixedThreadPool(2, new SimpleThreadFactory());
148	>	e.execute(new NoOpRunnable());
149	>	e.execute(new NoOpRunnable());
150	>	e.execute(new NoOpRunnable());
151	>	e.shutdown();
152		}
153
154	<	public void testExecuteRunnable () {
154	>	/**
155	>	* A new newFixedThreadPool with null ThreadFactory throws NPE
156	>	*/
157	>	public void testNewFixedThreadPool3() {
158		try {
159	<	Executor e = new DirectExecutor();
160	<	Task task = new Task();
227	<
228	<	assertFalse("task should not be complete", task.isCompleted());
229	<
230	<	Future<String> future = Executors.execute(e, task, TEST_STRING);
231	<	String result = future.get();
232	<
233	<	assertTrue("task should be complete", task.isCompleted());
234	<	assertSame("should return test string", TEST_STRING, result);
235	<	}
236	<	catch (ExecutionException ex) {
237	<	fail("Unexpected exception");
159	>	ExecutorService e = Executors.newFixedThreadPool(2, null);
160	>	shouldThrow();
161		}
162	<	catch (InterruptedException ex) {
240	<	fail("Unexpected exception");
162	>	catch(NullPointerException success) {
163		}
164		}
165
166	<	public void testInvokeRunnable () {
166	>	/**
167	>	* A new newFixedThreadPool with 0 threads throws IAE
168	>	*/
169	>	public void testNewFixedThreadPool4() {
170		try {
171	<	Executor e = new DirectExecutor();
172	<	Task task = new Task();
248	<
249	<	assertFalse("task should not be complete", task.isCompleted());
250	<
251	<	Executors.invoke(e, task);
252	<
253	<	assertTrue("task should be complete", task.isCompleted());
254	<	}
255	<	catch (ExecutionException ex) {
256	<	fail("Unexpected exception");
171	>	ExecutorService e = Executors.newFixedThreadPool(0);
172	>	shouldThrow();
173		}
174	<	catch (InterruptedException ex) {
259	<	fail("Unexpected exception");
174	>	catch(IllegalArgumentException success) {
175		}
176		}
177
263	–	public void testExecuteCallable () {
264	–	try {
265	–	Executor e = new DirectExecutor();
266	–	Future<String> future = Executors.execute(e, new StringTask());
267	–	String result = future.get();
178
179	<	assertSame("should return test string", TEST_STRING, result);
180	<	}
181	<	catch (ExecutionException ex) {
182	<	fail("Unexpected exception");
179	>	/**
180	>	*  timeouts from execute will time out if they compute too long.
181	>	*/
182	>	public void testTimedCallable() {
183	>	int N = 10000;
184	>	ExecutorService executor = Executors.newSingleThreadExecutor();
185	>	List<Callable<BigInteger>> tasks = new ArrayList<Callable<BigInteger>>(N);
186	>	try {
187	>	long startTime = System.currentTimeMillis();
188	>
189	>	long i = 0;
190	>	while (tasks.size() < N) {
191	>	tasks.add(new TimedCallable<BigInteger>(executor, new Fib(i), 1));
192	>	i += 10;
193	>	}
194	>
195	>	int iters = 0;
196	>	BigInteger sum = BigInteger.ZERO;
197	>	for (Iterator<Callable<BigInteger>> it = tasks.iterator(); it.hasNext();) {
198	>	try {
199	>	++iters;
200	>	sum = sum.add(it.next().call());
201	>	}
202	>	catch (TimeoutException success) {
203	>	assertTrue(iters > 0);
204	>	return;
205	>	}
206	>	catch (Exception e) {
207	>	unexpectedException();
208	>	}
209	>	}
210	>	// if by chance we didn't ever time out, total time must be small
211	>	long elapsed = System.currentTimeMillis() - startTime;
212	>	assertTrue(elapsed < N);
213		}
214	<	catch (InterruptedException ex) {
215	<	fail("Unexpected exception");
214	>	finally {
215	>	joinPool(executor);
216		}
217		}
218
219	<	public void testInvokeCallable () {
219	>
220	>	/**
221	>	* ThreadPoolExecutor using defaultThreadFactory has
222	>	* specified group, priority, daemon status, and name
223	>	*/
224	>	public void testDefaultThreadFactory() {
225	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
226	>	Runnable r = new Runnable() {
227	>	public void run() {
228	>	Thread current = Thread.currentThread();
229	>	threadAssertTrue(!current.isDaemon());
230	>	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
231	>	ThreadGroup g = current.getThreadGroup();
232	>	SecurityManager s = System.getSecurityManager();
233	>	if (s != null)
234	>	threadAssertTrue(g == s.getThreadGroup());
235	>	else
236	>	threadAssertTrue(g == egroup);
237	>	String name = current.getName();
238	>	threadAssertTrue(name.endsWith("thread-1"));
239	>	}
240	>	};
241	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.defaultThreadFactory());
242	>
243	>	e.execute(r);
244	>	e.shutdown();
245		try {
246	<	Executor e = new DirectExecutor();
247	<	String result = Executors.invoke(e, new StringTask());
248	<
249	<	assertSame("should return test string", TEST_STRING, result);
250	<	}
286	<	catch (ExecutionException ex) {
287	<	fail("Unexpected exception" );
288	<	}
289	<	catch (InterruptedException ex) {
290	<	fail("Unexpected exception");
246	>	Thread.sleep(SHORT_DELAY_MS);
247	>	} catch (Exception eX) {
248	>	unexpectedException();
249	>	} finally {
250	>	joinPool(e);
251		}
252		}
253
254	<	private static final String TEST_STRING = "a test string";
255	<
256	<	private static class Task implements Runnable {
257	<	public void run() { completed = true; }
258	<	public boolean isCompleted() { return completed; }
259	<	public void reset() { completed = false; }
260	<	private boolean completed = false;
261	<	}
262	<
263	<	private static class StringTask implements Callable<String> {
264	<	public String call() { return TEST_STRING; }
265	<	}
266	<
267	<	static class DirectExecutor implements Executor {
268	<	public void execute(Runnable r) {
269	<	r.run();
254	>	/**
255	>	* ThreadPoolExecutor using privilegedThreadFactory has
256	>	* specified group, priority, daemon status, name,
257	>	* access control context and context class loader
258	>	*/
259	>	public void testPrivilegedThreadFactory() {
260	>	Policy savedPolicy = Policy.getPolicy();
261	>	AdjustablePolicy policy = new AdjustablePolicy();
262	>	policy.addPermission(new RuntimePermission("getContextClassLoader"));
263	>	policy.addPermission(new RuntimePermission("setContextClassLoader"));
264	>	Policy.setPolicy(policy);
265	>	final ThreadGroup egroup = Thread.currentThread().getThreadGroup();
266	>	final ClassLoader thisccl = Thread.currentThread().getContextClassLoader();
267	>	final AccessControlContext thisacc = AccessController.getContext();
268	>	Runnable r = new Runnable() {
269	>	public void run() {
270	>	Thread current = Thread.currentThread();
271	>	threadAssertTrue(!current.isDaemon());
272	>	threadAssertTrue(current.getPriority() == Thread.NORM_PRIORITY);
273	>	ThreadGroup g = current.getThreadGroup();
274	>	SecurityManager s = System.getSecurityManager();
275	>	if (s != null)
276	>	threadAssertTrue(g == s.getThreadGroup());
277	>	else
278	>	threadAssertTrue(g == egroup);
279	>	String name = current.getName();
280	>	threadAssertTrue(name.endsWith("thread-1"));
281	>	threadAssertTrue(thisccl == current.getContextClassLoader());
282	>	threadAssertTrue(thisacc.equals(AccessController.getContext()));
283	>	}
284	>	};
285	>	ExecutorService e = Executors.newSingleThreadExecutor(Executors.privilegedThreadFactory());
286	>
287	>	Policy.setPolicy(savedPolicy);
288	>	e.execute(r);
289	>	e.shutdown();
290	>	try {
291	>	Thread.sleep(SHORT_DELAY_MS);
292	>	} catch (Exception ex) {
293	>	unexpectedException();
294	>	} finally {
295	>	joinPool(e);
296		}
311	–	}
297
298	+	}
299
300		}

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