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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.1 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.58 by jsr166, Wed Oct 6 02:11:57 2010 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		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.util.PropertyPermission;
11		import java.util.concurrent.*;
12	<	import java.io.*;
13	<
12	>	import java.util.concurrent.atomic.AtomicReference;
13	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
14	>	import java.security.CodeSource;
15	>	import java.security.Permission;
16	>	import java.security.PermissionCollection;
17	>	import java.security.Permissions;
18	>	import java.security.Policy;
19	>	import java.security.ProtectionDomain;
20	>	import java.security.SecurityPermission;
21
22		/**
23	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
24	<	* utility methods, as well as a simple framework for helping to make
25	<	* sure that assertions failing in generated threads cause the
26	<	* associated test that generated them to itself fail (which JUnit doe
27	<	* not otherwise arrange).  The rules for creating such tests are:
23	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
24	>	* utility methods and classes, as well as a simple framework for
25	>	* helping to make sure that assertions failing in generated threads
26	>	* cause the associated test that generated them to itself fail (which
27	>	* JUnit does not otherwise arrange).  The rules for creating such
28	>	* tests are:
29		*
30		* <ol>
31		*
32		* <li> All assertions in code running in generated threads must use
33	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
34	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
35	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
33	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
34	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
35	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
36		* particularly recommended) for other code to use these forms too.
37		* Only the most typically used JUnit assertion methods are defined
38		* this way, but enough to live with.</li>
39		*
40	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
41	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
40	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
41	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
42		* them. These methods are used to clear and check for thread
43		* assertion failures.</li>
44		*
45	<	* <li>All delays and timeouts must use one of the constants {@link
46	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
47	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
48	<	* discriminatable from zero time, and always allows enough time for
49	<	* the small amounts of computation (creating a thread, calling a few
45	>	* <li>All delays and timeouts must use one of the constants {@code
46	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
47	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
48	>	* discriminable from zero time, and always allows enough time for the
49	>	* small amounts of computation (creating a thread, calling a few
50		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
51		* is always discriminable as larger than SHORT and smaller than
52		* MEDIUM.  And so on. These constants are set to conservative values,
53	<	* (100, 500, 1000, 5000 MS) but even so, if there is ever any doubt,
54	<	* they can all be increased in one spot to rerun tests on slower
46	<	* platforms</li>
53	>	* but even so, if there is ever any doubt, they can all be increased
54	>	* in one spot to rerun tests on slower platforms.</li>
55		*
56		* <li> All threads generated must be joined inside each test case
57	<	* method (or <tt>fail</tt> to do so) before returning from the
58	<	* method. The {@link joinPool} method can be used to do this when
57	>	* method (or {@code fail} to do so) before returning from the
58	>	* method. The {@code joinPool} method can be used to do this when
59		* using Executors.</li>
60		*
61		* </ol>
62	+	*
63	+	* <p> <b>Other notes</b>
64	+	* <ul>
65	+	*
66	+	* <li> Usually, there is one testcase method per JSR166 method
67	+	* covering "normal" operation, and then as many exception-testing
68	+	* methods as there are exceptions the method can throw. Sometimes
69	+	* there are multiple tests per JSR166 method when the different
70	+	* "normal" behaviors differ significantly. And sometimes testcases
71	+	* cover multiple methods when they cannot be tested in
72	+	* isolation.</li>
73	+	*
74	+	* <li> The documentation style for testcases is to provide as javadoc
75	+	* a simple sentence or two describing the property that the testcase
76	+	* method purports to test. The javadocs do not say anything about how
77	+	* the property is tested. To find out, read the code.</li>
78	+	*
79	+	* <li> These tests are "conformance tests", and do not attempt to
80	+	* test throughput, latency, scalability or other performance factors
81	+	* (see the separate "jtreg" tests for a set intended to check these
82	+	* for the most central aspects of functionality.) So, most tests use
83	+	* the smallest sensible numbers of threads, collection sizes, etc
84	+	* needed to check basic conformance.</li>
85	+	*
86	+	* <li>The test classes currently do not declare inclusion in
87	+	* any particular package to simplify things for people integrating
88	+	* them in TCK test suites.</li>
89	+	*
90	+	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
91	+	* runs all JSR166 unit tests.</li>
92	+	*
93	+	* </ul>
94		*/
95		public class JSR166TestCase extends TestCase {
96	+	private static final boolean useSecurityManager =
97	+	Boolean.getBoolean("jsr166.useSecurityManager");
98
99		/**
100	<	* Flag set true if any threadAssert methods fail
100	>	* Runs all JSR166 unit tests using junit.textui.TestRunner
101		*/
102	<	protected volatile boolean threadFailed;
102	>	public static void main(String[] args) {
103	>	if (useSecurityManager) {
104	>	System.err.println("Setting a permissive security manager");
105	>	Policy.setPolicy(permissivePolicy());
106	>	System.setSecurityManager(new SecurityManager());
107	>	}
108	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
109	>
110	>	Test s = suite();
111	>	for (int i = 0; i < iters; ++i) {
112	>	junit.textui.TestRunner.run(s);
113	>	System.gc();
114	>	System.runFinalization();
115	>	}
116	>	System.exit(0);
117	>	}
118	>
119	>	/**
120	>	* Collects all JSR166 unit tests as one suite
121	>	*/
122	>	public static Test suite() {
123	>	TestSuite suite = new TestSuite("JSR166 Unit Tests");
124	>
125	>	suite.addTest(ForkJoinPoolTest.suite());
126	>	suite.addTest(ForkJoinTaskTest.suite());
127	>	suite.addTest(RecursiveActionTest.suite());
128	>	suite.addTest(RecursiveTaskTest.suite());
129	>	suite.addTest(LinkedTransferQueueTest.suite());
130	>	suite.addTest(PhaserTest.suite());
131	>	suite.addTest(ThreadLocalRandomTest.suite());
132	>	suite.addTest(AbstractExecutorServiceTest.suite());
133	>	suite.addTest(AbstractQueueTest.suite());
134	>	suite.addTest(AbstractQueuedSynchronizerTest.suite());
135	>	suite.addTest(AbstractQueuedLongSynchronizerTest.suite());
136	>	suite.addTest(ArrayBlockingQueueTest.suite());
137	>	suite.addTest(ArrayDequeTest.suite());
138	>	suite.addTest(AtomicBooleanTest.suite());
139	>	suite.addTest(AtomicIntegerArrayTest.suite());
140	>	suite.addTest(AtomicIntegerFieldUpdaterTest.suite());
141	>	suite.addTest(AtomicIntegerTest.suite());
142	>	suite.addTest(AtomicLongArrayTest.suite());
143	>	suite.addTest(AtomicLongFieldUpdaterTest.suite());
144	>	suite.addTest(AtomicLongTest.suite());
145	>	suite.addTest(AtomicMarkableReferenceTest.suite());
146	>	suite.addTest(AtomicReferenceArrayTest.suite());
147	>	suite.addTest(AtomicReferenceFieldUpdaterTest.suite());
148	>	suite.addTest(AtomicReferenceTest.suite());
149	>	suite.addTest(AtomicStampedReferenceTest.suite());
150	>	suite.addTest(ConcurrentHashMapTest.suite());
151	>	suite.addTest(ConcurrentLinkedDequeTest.suite());
152	>	suite.addTest(ConcurrentLinkedQueueTest.suite());
153	>	suite.addTest(ConcurrentSkipListMapTest.suite());
154	>	suite.addTest(ConcurrentSkipListSubMapTest.suite());
155	>	suite.addTest(ConcurrentSkipListSetTest.suite());
156	>	suite.addTest(ConcurrentSkipListSubSetTest.suite());
157	>	suite.addTest(CopyOnWriteArrayListTest.suite());
158	>	suite.addTest(CopyOnWriteArraySetTest.suite());
159	>	suite.addTest(CountDownLatchTest.suite());
160	>	suite.addTest(CyclicBarrierTest.suite());
161	>	suite.addTest(DelayQueueTest.suite());
162	>	suite.addTest(EntryTest.suite());
163	>	suite.addTest(ExchangerTest.suite());
164	>	suite.addTest(ExecutorsTest.suite());
165	>	suite.addTest(ExecutorCompletionServiceTest.suite());
166	>	suite.addTest(FutureTaskTest.suite());
167	>	suite.addTest(LinkedBlockingDequeTest.suite());
168	>	suite.addTest(LinkedBlockingQueueTest.suite());
169	>	suite.addTest(LinkedListTest.suite());
170	>	suite.addTest(LockSupportTest.suite());
171	>	suite.addTest(PriorityBlockingQueueTest.suite());
172	>	suite.addTest(PriorityQueueTest.suite());
173	>	suite.addTest(ReentrantLockTest.suite());
174	>	suite.addTest(ReentrantReadWriteLockTest.suite());
175	>	suite.addTest(ScheduledExecutorTest.suite());
176	>	suite.addTest(ScheduledExecutorSubclassTest.suite());
177	>	suite.addTest(SemaphoreTest.suite());
178	>	suite.addTest(SynchronousQueueTest.suite());
179	>	suite.addTest(SystemTest.suite());
180	>	suite.addTest(ThreadLocalTest.suite());
181	>	suite.addTest(ThreadPoolExecutorTest.suite());
182	>	suite.addTest(ThreadPoolExecutorSubclassTest.suite());
183	>	suite.addTest(ThreadTest.suite());
184	>	suite.addTest(TimeUnitTest.suite());
185	>	suite.addTest(TreeMapTest.suite());
186	>	suite.addTest(TreeSetTest.suite());
187	>	suite.addTest(TreeSubMapTest.suite());
188	>	suite.addTest(TreeSubSetTest.suite());
189	>
190	>	return suite;
191	>	}
192	>
193	>
194	>	public static long SHORT_DELAY_MS;
195	>	public static long SMALL_DELAY_MS;
196	>	public static long MEDIUM_DELAY_MS;
197	>	public static long LONG_DELAY_MS;
198	>
199
200		/**
201	<	* Initialize test to indicat that no thread assertions have failed
201	>	* Returns the shortest timed delay. This could
202	>	* be reimplemented to use for example a Property.
203		*/
204	<	public void setUp() {
205	<	threadFailed = false;
204	>	protected long getShortDelay() {
205	>	return 50;
206	>	}
207	>
208	>
209	>	/**
210	>	* Sets delays as multiples of SHORT_DELAY.
211	>	*/
212	>	protected void setDelays() {
213	>	SHORT_DELAY_MS = getShortDelay();
214	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
215	>	MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
216	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
217	>	}
218	>
219	>	/**
220	>	* The first exception encountered if any threadAssertXXX method fails.
221	>	*/
222	>	private final AtomicReference<Throwable> threadFailure
223	>	= new AtomicReference<Throwable>(null);
224	>
225	>	/**
226	>	* Records an exception so that it can be rethrown later in the test
227	>	* harness thread, triggering a test case failure.  Only the first
228	>	* failure is recorded; subsequent calls to this method from within
229	>	* the same test have no effect.
230	>	*/
231	>	public void threadRecordFailure(Throwable t) {
232	>	threadFailure.compareAndSet(null, t);
233	>	}
234	>
235	>	public void setUp() {
236	>	setDelays();
237		}
238
239		/**
240	<	* Trigger test case failure if any thread assertions have failed
240	>	* Triggers test case failure if any thread assertions have failed,
241	>	* by rethrowing, in the test harness thread, any exception recorded
242	>	* earlier by threadRecordFailure.
243		*/
244	<	public void tearDown() {
245	<	assertFalse(threadFailed);
244	>	public void tearDown() throws Exception {
245	>	Throwable t = threadFailure.get();
246	>	if (t != null) {
247	>	if (t instanceof Error)
248	>	throw (Error) t;
249	>	else if (t instanceof RuntimeException)
250	>	throw (RuntimeException) t;
251	>	else if (t instanceof Exception)
252	>	throw (Exception) t;
253	>	else {
254	>	AssertionFailedError afe =
255	>	new AssertionFailedError(t.toString());
256	>	afe.initCause(t);
257	>	throw afe;
258	>	}
259	>	}
260		}
261
262	+	/**
263	+	* Just like fail(reason), but additionally recording (using
264	+	* threadRecordFailure) any AssertionFailedError thrown, so that
265	+	* the current testcase will fail.
266	+	*/
267		public void threadFail(String reason) {
268	<	threadFailed = true;
269	<	fail(reason);
268	>	try {
269	>	fail(reason);
270	>	} catch (AssertionFailedError t) {
271	>	threadRecordFailure(t);
272	>	fail(reason);
273	>	}
274		}
275
276	+	/**
277	+	* Just like assertTrue(b), but additionally recording (using
278	+	* threadRecordFailure) any AssertionFailedError thrown, so that
279	+	* the current testcase will fail.
280	+	*/
281		public void threadAssertTrue(boolean b) {
282	<	if (!b) {
83	<	threadFailed = true;
282	>	try {
283		assertTrue(b);
284	+	} catch (AssertionFailedError t) {
285	+	threadRecordFailure(t);
286	+	throw t;
287		}
288		}
289	+
290	+	/**
291	+	* Just like assertFalse(b), but additionally recording (using
292	+	* threadRecordFailure) any AssertionFailedError thrown, so that
293	+	* the current testcase will fail.
294	+	*/
295		public void threadAssertFalse(boolean b) {
296	<	if (b) {
89	<	threadFailed = true;
296	>	try {
297		assertFalse(b);
298	+	} catch (AssertionFailedError t) {
299	+	threadRecordFailure(t);
300	+	throw t;
301		}
302		}
303	+
304	+	/**
305	+	* Just like assertNull(x), but additionally recording (using
306	+	* threadRecordFailure) any AssertionFailedError thrown, so that
307	+	* the current testcase will fail.
308	+	*/
309		public void threadAssertNull(Object x) {
310	<	if (x != null) {
95	<	threadFailed = true;
310	>	try {
311		assertNull(x);
312	+	} catch (AssertionFailedError t) {
313	+	threadRecordFailure(t);
314	+	throw t;
315		}
316		}
317	+
318	+	/**
319	+	* Just like assertEquals(x, y), but additionally recording (using
320	+	* threadRecordFailure) any AssertionFailedError thrown, so that
321	+	* the current testcase will fail.
322	+	*/
323		public void threadAssertEquals(long x, long y) {
324	<	if (x != y) {
101	<	threadFailed = true;
324	>	try {
325		assertEquals(x, y);
326	+	} catch (AssertionFailedError t) {
327	+	threadRecordFailure(t);
328	+	throw t;
329		}
330		}
331	+
332	+	/**
333	+	* Just like assertEquals(x, y), but additionally recording (using
334	+	* threadRecordFailure) any AssertionFailedError thrown, so that
335	+	* the current testcase will fail.
336	+	*/
337		public void threadAssertEquals(Object x, Object y) {
338	<	if (x != y && (x == null || !x.equals(y))) {
107	<	threadFailed = true;
338	>	try {
339		assertEquals(x, y);
340	+	} catch (AssertionFailedError t) {
341	+	threadRecordFailure(t);
342	+	throw t;
343	+	} catch (Throwable t) {
344	+	threadUnexpectedException(t);
345		}
346		}
347
348		/**
349	<	* Wait out termination of a thread pool or fail doing so
349	>	* Just like assertSame(x, y), but additionally recording (using
350	>	* threadRecordFailure) any AssertionFailedError thrown, so that
351	>	* the current testcase will fail.
352	>	*/
353	>	public void threadAssertSame(Object x, Object y) {
354	>	try {
355	>	assertSame(x, y);
356	>	} catch (AssertionFailedError t) {
357	>	threadRecordFailure(t);
358	>	throw t;
359	>	}
360	>	}
361	>
362	>	/**
363	>	* Calls threadFail with message "should throw exception".
364	>	*/
365	>	public void threadShouldThrow() {
366	>	threadFail("should throw exception");
367	>	}
368	>
369	>	/**
370	>	* Calls threadFail with message "should throw" + exceptionName.
371	>	*/
372	>	public void threadShouldThrow(String exceptionName) {
373	>	threadFail("should throw " + exceptionName);
374	>	}
375	>
376	>	/**
377	>	* Records the given exception using {@link #threadRecordFailure},
378	>	* then rethrows the exception, wrapping it in an
379	>	* AssertionFailedError if necessary.
380	>	*/
381	>	public void threadUnexpectedException(Throwable t) {
382	>	threadRecordFailure(t);
383	>	t.printStackTrace();
384	>	if (t instanceof RuntimeException)
385	>	throw (RuntimeException) t;
386	>	else if (t instanceof Error)
387	>	throw (Error) t;
388	>	else {
389	>	AssertionFailedError afe =
390	>	new AssertionFailedError("unexpected exception: " + t);
391	>	t.initCause(t);
392	>	throw afe;
393	>	}
394	>	}
395	>
396	>	/**
397	>	* Waits out termination of a thread pool or fails doing so.
398		*/
399		public void joinPool(ExecutorService exec) {
400		try {
401		exec.shutdown();
402	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
403	<	} catch(InterruptedException ie) {
404	<	fail("unexpected exception");
402	>	assertTrue("ExecutorService did not terminate in a timely manner",
403	>	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
404	>	} catch (SecurityException ok) {
405	>	// Allowed in case test doesn't have privs
406	>	} catch (InterruptedException ie) {
407	>	fail("Unexpected InterruptedException");
408		}
409		}
410
124	–	public static final long SHORT_DELAY_MS =   100;
125	–	public static final long SMALL_DELAY_MS =   500;
126	–	public static final long MEDIUM_DELAY_MS = 1000;
127	–	public static final long LONG_DELAY_MS =   5000;
411
412	+	/**
413	+	* Fails with message "should throw exception".
414	+	*/
415	+	public void shouldThrow() {
416	+	fail("Should throw exception");
417	+	}
418	+
419	+	/**
420	+	* Fails with message "should throw " + exceptionName.
421	+	*/
422	+	public void shouldThrow(String exceptionName) {
423	+	fail("Should throw " + exceptionName);
424	+	}
425
426		/**
427		* The number of elements to place in collections, arrays, etc.
#	Line 134 | Line 430 | public class JSR166TestCase extends Test
430
431		// Some convenient Integer constants
432
433	<	public static final Integer zero = new Integer(0);
434	<	public static final Integer one = new Integer(1);
435	<	public static final Integer two = new Integer(2);
436	<	public static final Integer three  = new Integer(3);
433	>	public static final Integer zero  = new Integer(0);
434	>	public static final Integer one   = new Integer(1);
435	>	public static final Integer two   = new Integer(2);
436	>	public static final Integer three = new Integer(3);
437		public static final Integer four  = new Integer(4);
438		public static final Integer five  = new Integer(5);
439	<	public static final Integer six = new Integer(6);
439	>	public static final Integer six   = new Integer(6);
440		public static final Integer seven = new Integer(7);
441		public static final Integer eight = new Integer(8);
442	<	public static final Integer nine = new Integer(9);
442	>	public static final Integer nine  = new Integer(9);
443		public static final Integer m1  = new Integer(-1);
444		public static final Integer m2  = new Integer(-2);
445		public static final Integer m3  = new Integer(-3);
446	<	public static final Integer m4 = new Integer(-4);
447	<	public static final Integer m5 = new Integer(-5);
446	>	public static final Integer m4  = new Integer(-4);
447	>	public static final Integer m5  = new Integer(-5);
448	>	public static final Integer m6  = new Integer(-6);
449		public static final Integer m10 = new Integer(-10);
450
451
452	<	// Some convenient Runnable classes
452	>	/**
453	>	* Runs Runnable r with a security policy that permits precisely
454	>	* the specified permissions.  If there is no current security
455	>	* manager, the runnable is run twice, both with and without a
456	>	* security manager.  We require that any security manager permit
457	>	* getPolicy/setPolicy.
458	>	*/
459	>	public void runWithPermissions(Runnable r, Permission... permissions) {
460	>	SecurityManager sm = System.getSecurityManager();
461	>	if (sm == null) {
462	>	r.run();
463	>	Policy savedPolicy = Policy.getPolicy();
464	>	try {
465	>	Policy.setPolicy(permissivePolicy());
466	>	System.setSecurityManager(new SecurityManager());
467	>	runWithPermissions(r, permissions);
468	>	} finally {
469	>	System.setSecurityManager(null);
470	>	Policy.setPolicy(savedPolicy);
471	>	}
472	>	} else {
473	>	Policy savedPolicy = Policy.getPolicy();
474	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
475	>	Policy.setPolicy(policy);
476
477	<	public static class NoOpRunnable implements Runnable {
478	<	public void run() {}
477	>	try {
478	>	r.run();
479	>	} finally {
480	>	policy.addPermission(new SecurityPermission("setPolicy"));
481	>	Policy.setPolicy(savedPolicy);
482	>	}
483	>	}
484		}
485
486	<	public static class NoOpCallable implements Callable {
487	<	public Object call() { return Boolean.TRUE; }
486	>	/**
487	>	* Runs a runnable without any permissions.
488	>	*/
489	>	public void runWithoutPermissions(Runnable r) {
490	>	runWithPermissions(r);
491		}
492
493	<	public class ShortRunnable implements Runnable {
494	<	public void run() {
493	>	/**
494	>	* A security policy where new permissions can be dynamically added
495	>	* or all cleared.
496	>	*/
497	>	public static class AdjustablePolicy extends java.security.Policy {
498	>	Permissions perms = new Permissions();
499	>	AdjustablePolicy(Permission... permissions) {
500	>	for (Permission permission : permissions)
501	>	perms.add(permission);
502	>	}
503	>	void addPermission(Permission perm) { perms.add(perm); }
504	>	void clearPermissions() { perms = new Permissions(); }
505	>	public PermissionCollection getPermissions(CodeSource cs) {
506	>	return perms;
507	>	}
508	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
509	>	return perms;
510	>	}
511	>	public boolean implies(ProtectionDomain pd, Permission p) {
512	>	return perms.implies(p);
513	>	}
514	>	public void refresh() {}
515	>	}
516	>
517	>	/**
518	>	* Returns a policy containing all the permissions we ever need.
519	>	*/
520	>	public static Policy permissivePolicy() {
521	>	return new AdjustablePolicy
522	>	// Permissions j.u.c. needs directly
523	>	(new RuntimePermission("modifyThread"),
524	>	new RuntimePermission("getClassLoader"),
525	>	new RuntimePermission("setContextClassLoader"),
526	>	// Permissions needed to change permissions!
527	>	new SecurityPermission("getPolicy"),
528	>	new SecurityPermission("setPolicy"),
529	>	new RuntimePermission("setSecurityManager"),
530	>	// Permissions needed by the junit test harness
531	>	new RuntimePermission("accessDeclaredMembers"),
532	>	new PropertyPermission("*", "read"),
533	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
534	>	}
535	>
536	>	/**
537	>	* Sleep until the timeout has elapsed, or interrupted.
538	>	* Does <em>NOT</em> throw InterruptedException.
539	>	*/
540	>	void sleepTillInterrupted(long timeoutMillis) {
541	>	try {
542	>	Thread.sleep(timeoutMillis);
543	>	} catch (InterruptedException wakeup) {}
544	>	}
545	>
546	>	/**
547	>	* Returns a new started daemon Thread running the given runnable.
548	>	*/
549	>	Thread newStartedThread(Runnable runnable) {
550	>	Thread t = new Thread(runnable);
551	>	t.setDaemon(true);
552	>	t.start();
553	>	return t;
554	>	}
555	>
556	>	// Some convenient Runnable classes
557	>
558	>	public abstract class CheckedRunnable implements Runnable {
559	>	protected abstract void realRun() throws Throwable;
560	>
561	>	public final void run() {
562		try {
563	<	Thread.sleep(SHORT_DELAY_MS);
563	>	realRun();
564	>	} catch (Throwable t) {
565	>	threadUnexpectedException(t);
566		}
567	<	catch(Exception e) {
568	<	threadFail("unexpectedException");
567	>	}
568	>	}
569	>
570	>	public abstract class RunnableShouldThrow implements Runnable {
571	>	protected abstract void realRun() throws Throwable;
572	>
573	>	final Class<?> exceptionClass;
574	>
575	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
576	>	this.exceptionClass = exceptionClass;
577	>	}
578	>
579	>	public final void run() {
580	>	try {
581	>	realRun();
582	>	threadShouldThrow(exceptionClass.getSimpleName());
583	>	} catch (Throwable t) {
584	>	if (! exceptionClass.isInstance(t))
585	>	threadUnexpectedException(t);
586		}
587		}
588		}
589
590	<	public class ShortInterruptedRunnable implements Runnable {
591	<	public void run() {
590	>	public abstract class ThreadShouldThrow extends Thread {
591	>	protected abstract void realRun() throws Throwable;
592	>
593	>	final Class<?> exceptionClass;
594	>
595	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
596	>	this.exceptionClass = exceptionClass;
597	>	}
598	>
599	>	public final void run() {
600		try {
601	<	Thread.sleep(SHORT_DELAY_MS);
602	<	threadFail("should throw IE");
601	>	realRun();
602	>	threadShouldThrow(exceptionClass.getSimpleName());
603	>	} catch (Throwable t) {
604	>	if (! exceptionClass.isInstance(t))
605	>	threadUnexpectedException(t);
606		}
607	<	catch(InterruptedException success) {
607	>	}
608	>	}
609	>
610	>	public abstract class CheckedInterruptedRunnable implements Runnable {
611	>	protected abstract void realRun() throws Throwable;
612	>
613	>	public final void run() {
614	>	try {
615	>	realRun();
616	>	threadShouldThrow("InterruptedException");
617	>	} catch (InterruptedException success) {
618	>	} catch (Throwable t) {
619	>	threadUnexpectedException(t);
620		}
621		}
622		}
623
624	<	public class SmallRunnable implements Runnable {
625	<	public void run() {
624	>	public abstract class CheckedCallable<T> implements Callable<T> {
625	>	protected abstract T realCall() throws Throwable;
626	>
627	>	public final T call() {
628		try {
629	<	Thread.sleep(SMALL_DELAY_MS);
629	>	return realCall();
630	>	} catch (Throwable t) {
631	>	threadUnexpectedException(t);
632	>	return null;
633		}
634	<	catch(Exception e) {
635	<	threadFail("unexpectedException");
634	>	}
635	>	}
636	>
637	>	public abstract class CheckedInterruptedCallable<T>
638	>	implements Callable<T> {
639	>	protected abstract T realCall() throws Throwable;
640	>
641	>	public final T call() {
642	>	try {
643	>	T result = realCall();
644	>	threadShouldThrow("InterruptedException");
645	>	return result;
646	>	} catch (InterruptedException success) {
647	>	} catch (Throwable t) {
648	>	threadUnexpectedException(t);
649		}
650	+	return null;
651		}
652		}
653
654	<	public class SmallCallable implements Callable {
655	<	public Object call() {
654	>	public static class NoOpRunnable implements Runnable {
655	>	public void run() {}
656	>	}
657	>
658	>	public static class NoOpCallable implements Callable {
659	>	public Object call() { return Boolean.TRUE; }
660	>	}
661	>
662	>	public static final String TEST_STRING = "a test string";
663	>
664	>	public static class StringTask implements Callable<String> {
665	>	public String call() { return TEST_STRING; }
666	>	}
667	>
668	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
669	>	return new CheckedCallable<String>() {
670	>	public String realCall() {
671	>	try {
672	>	latch.await();
673	>	} catch (InterruptedException quittingTime) {}
674	>	return TEST_STRING;
675	>	}};
676	>	}
677	>
678	>	public static class NPETask implements Callable<String> {
679	>	public String call() { throw new NullPointerException(); }
680	>	}
681	>
682	>	public static class CallableOne implements Callable<Integer> {
683	>	public Integer call() { return one; }
684	>	}
685	>
686	>	public class ShortRunnable extends CheckedRunnable {
687	>	protected void realRun() throws Throwable {
688	>	Thread.sleep(SHORT_DELAY_MS);
689	>	}
690	>	}
691	>
692	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
693	>	protected void realRun() throws InterruptedException {
694	>	Thread.sleep(SHORT_DELAY_MS);
695	>	}
696	>	}
697	>
698	>	public class SmallRunnable extends CheckedRunnable {
699	>	protected void realRun() throws Throwable {
700	>	Thread.sleep(SMALL_DELAY_MS);
701	>	}
702	>	}
703	>
704	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
705	>	protected void realRun() {
706		try {
707		Thread.sleep(SMALL_DELAY_MS);
708	<	}
709	<	catch(Exception e) {
710	<	threadFail("unexpectedException");
711	<	}
708	>	} catch (InterruptedException ok) {}
709	>	}
710	>	}
711	>
712	>	public class SmallCallable extends CheckedCallable {
713	>	protected Object realCall() throws InterruptedException {
714	>	Thread.sleep(SMALL_DELAY_MS);
715		return Boolean.TRUE;
716		}
717		}
718
719	<	public class SmallInterruptedRunnable implements Runnable {
719	>	public class MediumRunnable extends CheckedRunnable {
720	>	protected void realRun() throws Throwable {
721	>	Thread.sleep(MEDIUM_DELAY_MS);
722	>	}
723	>	}
724	>
725	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
726	>	protected void realRun() throws InterruptedException {
727	>	Thread.sleep(MEDIUM_DELAY_MS);
728	>	}
729	>	}
730	>
731	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
732	>	protected void realRun() {
733	>	try {
734	>	Thread.sleep(MEDIUM_DELAY_MS);
735	>	} catch (InterruptedException ok) {}
736	>	}
737	>	}
738	>
739	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
740	>	protected void realRun() {
741	>	try {
742	>	Thread.sleep(LONG_DELAY_MS);
743	>	} catch (InterruptedException ok) {}
744	>	}
745	>	}
746	>
747	>	/**
748	>	* For use as ThreadFactory in constructors
749	>	*/
750	>	public static class SimpleThreadFactory implements ThreadFactory {
751	>	public Thread newThread(Runnable r) {
752	>	return new Thread(r);
753	>	}
754	>	}
755	>
756	>	public static class TrackedShortRunnable implements Runnable {
757	>	public volatile boolean done = false;
758		public void run() {
759		try {
760		Thread.sleep(SMALL_DELAY_MS);
761	<	threadFail("should throw IE");
762	<	}
216	<	catch(InterruptedException success) {
217	<	}
761	>	done = true;
762	>	} catch (InterruptedException ok) {}
763		}
764		}
765
766	<
767	<	public class MediumRunnable implements Runnable {
766	>	public static class TrackedMediumRunnable implements Runnable {
767	>	public volatile boolean done = false;
768		public void run() {
769		try {
770		Thread.sleep(MEDIUM_DELAY_MS);
771	<	}
772	<	catch(Exception e) {
228	<	threadFail("unexpectedException");
229	<	}
771	>	done = true;
772	>	} catch (InterruptedException ok) {}
773		}
774		}
775
776	<	public class MediumInterruptedRunnable implements Runnable {
776	>	public static class TrackedLongRunnable implements Runnable {
777	>	public volatile boolean done = false;
778		public void run() {
779		try {
780	<	Thread.sleep(MEDIUM_DELAY_MS);
781	<	threadFail("should throw IE");
782	<	}
239	<	catch(InterruptedException success) {
240	<	}
780	>	Thread.sleep(LONG_DELAY_MS);
781	>	done = true;
782	>	} catch (InterruptedException ok) {}
783		}
784		}
785
786	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
786	>	public static class TrackedNoOpRunnable implements Runnable {
787	>	public volatile boolean done = false;
788		public void run() {
789	+	done = true;
790	+	}
791	+	}
792	+
793	+	public static class TrackedCallable implements Callable {
794	+	public volatile boolean done = false;
795	+	public Object call() {
796		try {
797	<	Thread.sleep(MEDIUM_DELAY_MS);
797	>	Thread.sleep(SMALL_DELAY_MS);
798	>	done = true;
799	>	} catch (InterruptedException ok) {}
800	>	return Boolean.TRUE;
801	>	}
802	>	}
803	>
804	>	/**
805	>	* Analog of CheckedRunnable for RecursiveAction
806	>	*/
807	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
808	>	protected abstract void realCompute() throws Throwable;
809	>
810	>	public final void compute() {
811	>	try {
812	>	realCompute();
813	>	} catch (Throwable t) {
814	>	threadUnexpectedException(t);
815		}
816	<	catch(InterruptedException success) {
816	>	}
817	>	}
818	>
819	>	/**
820	>	* Analog of CheckedCallable for RecursiveTask
821	>	*/
822	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
823	>	protected abstract T realCompute() throws Throwable;
824	>
825	>	public final T compute() {
826	>	try {
827	>	return realCompute();
828	>	} catch (Throwable t) {
829	>	threadUnexpectedException(t);
830	>	return null;
831		}
832		}
833		}
834	<
834	>
835	>	/**
836	>	* For use as RejectedExecutionHandler in constructors
837	>	*/
838	>	public static class NoOpREHandler implements RejectedExecutionHandler {
839	>	public void rejectedExecution(Runnable r,
840	>	ThreadPoolExecutor executor) {}
841	>	}
842	>
843		}

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