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root/jsr166/jsr166/src/test/tck/JSR166TestCase.java

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.22 by dl, Tue Jan 20 20:20:56 2004 UTC vs.
Revision 1.89 by jsr166, Fri Jun 3 05:07:14 2011 UTC

#	Line 1 | Line 1
1		/*
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.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.io.ByteArrayInputStream;
11	>	import java.io.ByteArrayOutputStream;
12	>	import java.io.ObjectInputStream;
13	>	import java.io.ObjectOutputStream;
14	>	import java.util.Arrays;
15	>	import java.util.Date;
16	>	import java.util.NoSuchElementException;
17	>	import java.util.PropertyPermission;
18		import java.util.concurrent.*;
19	<	import java.io.*;
20	<	import java.security.*;
19	>	import java.util.concurrent.atomic.AtomicBoolean;
20	>	import java.util.concurrent.atomic.AtomicReference;
21	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
22	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
23	>	import java.security.CodeSource;
24	>	import java.security.Permission;
25	>	import java.security.PermissionCollection;
26	>	import java.security.Permissions;
27	>	import java.security.Policy;
28	>	import java.security.ProtectionDomain;
29	>	import java.security.SecurityPermission;
30
31		/**
32		* Base class for JSR166 Junit TCK tests.  Defines some constants,
33		* utility methods and classes, as well as a simple framework for
34		* helping to make sure that assertions failing in generated threads
35		* cause the associated test that generated them to itself fail (which
36	<	* JUnit doe not otherwise arrange).  The rules for creating such
36	>	* JUnit does not otherwise arrange).  The rules for creating such
37		* tests are:
38		*
39		* <ol>
40		*
41		* <li> All assertions in code running in generated threads must use
42	<	* the forms {@link #threadFail} , {@link #threadAssertTrue} {@link
42	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
43		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
44	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
44	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
45		* particularly recommended) for other code to use these forms too.
46		* Only the most typically used JUnit assertion methods are defined
47		* this way, but enough to live with.</li>
48		*
49		* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
50	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
50	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
51		* them. These methods are used to clear and check for thread
52		* assertion failures.</li>
53		*
54	<	* <li>All delays and timeouts must use one of the constants <tt>
55	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
56	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
54	>	* <li>All delays and timeouts must use one of the constants {@code
55	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
56	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
57		* discriminable from zero time, and always allows enough time for the
58		* small amounts of computation (creating a thread, calling a few
59		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
60		* is always discriminable as larger than SHORT and smaller than
61		* MEDIUM.  And so on. These constants are set to conservative values,
62		* but even so, if there is ever any doubt, they can all be increased
63	<	* in one spot to rerun tests on slower platforms</li>
63	>	* in one spot to rerun tests on slower platforms.</li>
64		*
65		* <li> All threads generated must be joined inside each test case
66	<	* method (or <tt>fail</tt> to do so) before returning from the
67	<	* method. The <tt> joinPool</tt> method can be used to do this when
66	>	* method (or {@code fail} to do so) before returning from the
67	>	* method. The {@code joinPool} method can be used to do this when
68		* using Executors.</li>
69		*
70		* </ol>
#	Line 63 | Line 79 | import java.security.*;
79		* "normal" behaviors differ significantly. And sometimes testcases
80		* cover multiple methods when they cannot be tested in
81		* isolation.</li>
82	<	*
82	>	*
83		* <li> The documentation style for testcases is to provide as javadoc
84		* a simple sentence or two describing the property that the testcase
85		* method purports to test. The javadocs do not say anything about how
#	Line 80 | Line 96 | import java.security.*;
96		* any particular package to simplify things for people integrating
97		* them in TCK test suites.</li>
98		*
99	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
99	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
100		* runs all JSR166 unit tests.</li>
101		*
102		* </ul>
103		*/
104		public class JSR166TestCase extends TestCase {
105	+	private static final boolean useSecurityManager =
106	+	Boolean.getBoolean("jsr166.useSecurityManager");
107	+
108	+	protected static final boolean expensiveTests =
109	+	Boolean.getBoolean("jsr166.expensiveTests");
110	+
111	+	/**
112	+	* If true, report on stdout all "slow" tests, that is, ones that
113	+	* take more than profileThreshold milliseconds to execute.
114	+	*/
115	+	private static final boolean profileTests =
116	+	Boolean.getBoolean("jsr166.profileTests");
117	+
118	+	/**
119	+	* The number of milliseconds that tests are permitted for
120	+	* execution without being reported, when profileTests is set.
121	+	*/
122	+	private static final long profileThreshold =
123	+	Long.getLong("jsr166.profileThreshold", 100);
124	+
125	+	protected void runTest() throws Throwable {
126	+	if (profileTests)
127	+	runTestProfiled();
128	+	else
129	+	super.runTest();
130	+	}
131	+
132	+	protected void runTestProfiled() throws Throwable {
133	+	long t0 = System.nanoTime();
134	+	try {
135	+	super.runTest();
136	+	} finally {
137	+	long elapsedMillis =
138	+	(System.nanoTime() - t0) / (1000L * 1000L);
139	+	if (elapsedMillis >= profileThreshold)
140	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
141	+	}
142	+	}
143	+
144		/**
145		* Runs all JSR166 unit tests using junit.textui.TestRunner
146	<	*/
147	<	public static void main (String[] args) {
148	<	int iters = 1;
149	<	if (args.length > 0)
150	<	iters = Integer.parseInt(args[0]);
146	>	*/
147	>	public static void main(String[] args) {
148	>	if (useSecurityManager) {
149	>	System.err.println("Setting a permissive security manager");
150	>	Policy.setPolicy(permissivePolicy());
151	>	System.setSecurityManager(new SecurityManager());
152	>	}
153	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
154	>
155		Test s = suite();
156		for (int i = 0; i < iters; ++i) {
157	<	junit.textui.TestRunner.run (s);
157	>	junit.textui.TestRunner.run(s);
158		System.gc();
159		System.runFinalization();
160		}
161		System.exit(0);
162		}
163
164	<	/**
165	<	* Collects all JSR166 unit tests as one suite
166	<	*/
167	<	public static Test suite ( ) {
168	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
169	<
170	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
171	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
172	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
173	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
115	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
116	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
117	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
118	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
119	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
120	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
121	<	suite.addTest(new TestSuite(AtomicLongTest.class));
122	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
123	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
124	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
125	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
126	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
127	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
128	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
129	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
130	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
131	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
132	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
133	<	suite.addTest(new TestSuite(DelayQueueTest.class));
134	<	suite.addTest(new TestSuite(ExchangerTest.class));
135	<	suite.addTest(new TestSuite(ExecutorsTest.class));
136	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
137	<	suite.addTest(new TestSuite(FutureTaskTest.class));
138	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
139	<	suite.addTest(new TestSuite(LinkedListTest.class));
140	<	suite.addTest(new TestSuite(LockSupportTest.class));
141	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
142	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
143	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
144	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
145	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
146	<	suite.addTest(new TestSuite(SemaphoreTest.class));
147	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
148	<	suite.addTest(new TestSuite(SystemTest.class));
149	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
150	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
151	<	suite.addTest(new TestSuite(ThreadTest.class));
152	<	suite.addTest(new TestSuite(TimeUnitTest.class));
153	<
164	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
165	>	TestSuite suite = new TestSuite();
166	>	for (Object suiteOrClass : suiteOrClasses) {
167	>	if (suiteOrClass instanceof TestSuite)
168	>	suite.addTest((TestSuite) suiteOrClass);
169	>	else if (suiteOrClass instanceof Class)
170	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
171	>	else
172	>	throw new ClassCastException("not a test suite or class");
173	>	}
174		return suite;
175		}
176
177	+	/**
178	+	* Collects all JSR166 unit tests as one suite.
179	+	*/
180	+	public static Test suite() {
181	+	return newTestSuite(
182	+	ForkJoinPoolTest.suite(),
183	+	ForkJoinTaskTest.suite(),
184	+	RecursiveActionTest.suite(),
185	+	RecursiveTaskTest.suite(),
186	+	LinkedTransferQueueTest.suite(),
187	+	PhaserTest.suite(),
188	+	ThreadLocalRandomTest.suite(),
189	+	AbstractExecutorServiceTest.suite(),
190	+	AbstractQueueTest.suite(),
191	+	AbstractQueuedSynchronizerTest.suite(),
192	+	AbstractQueuedLongSynchronizerTest.suite(),
193	+	ArrayBlockingQueueTest.suite(),
194	+	ArrayDequeTest.suite(),
195	+	AtomicBooleanTest.suite(),
196	+	AtomicIntegerArrayTest.suite(),
197	+	AtomicIntegerFieldUpdaterTest.suite(),
198	+	AtomicIntegerTest.suite(),
199	+	AtomicLongArrayTest.suite(),
200	+	AtomicLongFieldUpdaterTest.suite(),
201	+	AtomicLongTest.suite(),
202	+	AtomicMarkableReferenceTest.suite(),
203	+	AtomicReferenceArrayTest.suite(),
204	+	AtomicReferenceFieldUpdaterTest.suite(),
205	+	AtomicReferenceTest.suite(),
206	+	AtomicStampedReferenceTest.suite(),
207	+	ConcurrentHashMapTest.suite(),
208	+	ConcurrentLinkedDequeTest.suite(),
209	+	ConcurrentLinkedQueueTest.suite(),
210	+	ConcurrentSkipListMapTest.suite(),
211	+	ConcurrentSkipListSubMapTest.suite(),
212	+	ConcurrentSkipListSetTest.suite(),
213	+	ConcurrentSkipListSubSetTest.suite(),
214	+	CopyOnWriteArrayListTest.suite(),
215	+	CopyOnWriteArraySetTest.suite(),
216	+	CountDownLatchTest.suite(),
217	+	CyclicBarrierTest.suite(),
218	+	DelayQueueTest.suite(),
219	+	EntryTest.suite(),
220	+	ExchangerTest.suite(),
221	+	ExecutorsTest.suite(),
222	+	ExecutorCompletionServiceTest.suite(),
223	+	FutureTaskTest.suite(),
224	+	LinkedBlockingDequeTest.suite(),
225	+	LinkedBlockingQueueTest.suite(),
226	+	LinkedListTest.suite(),
227	+	LockSupportTest.suite(),
228	+	PriorityBlockingQueueTest.suite(),
229	+	PriorityQueueTest.suite(),
230	+	ReentrantLockTest.suite(),
231	+	ReentrantReadWriteLockTest.suite(),
232	+	ScheduledExecutorTest.suite(),
233	+	ScheduledExecutorSubclassTest.suite(),
234	+	SemaphoreTest.suite(),
235	+	SynchronousQueueTest.suite(),
236	+	SystemTest.suite(),
237	+	ThreadLocalTest.suite(),
238	+	ThreadPoolExecutorTest.suite(),
239	+	ThreadPoolExecutorSubclassTest.suite(),
240	+	ThreadTest.suite(),
241	+	TimeUnitTest.suite(),
242	+	TreeMapTest.suite(),
243	+	TreeSetTest.suite(),
244	+	TreeSubMapTest.suite(),
245	+	TreeSubSetTest.suite());
246	+	}
247	+
248
249		public static long SHORT_DELAY_MS;
250		public static long SMALL_DELAY_MS;
#	Line 162 | Line 253 | public class JSR166TestCase extends Test
253
254
255		/**
256	<	* Return the shortest timed delay. This could
256	>	* Returns the shortest timed delay. This could
257		* be reimplemented to use for example a Property.
258	<	*/
258	>	*/
259		protected long getShortDelay() {
260		return 50;
261		}
262
172	–
263		/**
264	<	* Set delays as multiples of SHORT_DELAY.
264	>	* Sets delays as multiples of SHORT_DELAY.
265		*/
266	<	protected  void setDelays() {
266	>	protected void setDelays() {
267		SHORT_DELAY_MS = getShortDelay();
268	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
268	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
269		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
270	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
270	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
271	>	}
272	>
273	>	/**
274	>	* Returns a timeout in milliseconds to be used in tests that
275	>	* verify that operations block or time out.
276	>	*/
277	>	long timeoutMillis() {
278	>	return SHORT_DELAY_MS / 4;
279	>	}
280	>
281	>	/**
282	>	* Returns a new Date instance representing a time delayMillis
283	>	* milliseconds in the future.
284	>	*/
285	>	Date delayedDate(long delayMillis) {
286	>	return new Date(System.currentTimeMillis() + delayMillis);
287		}
288
289		/**
290	<	* Flag set true if any threadAssert methods fail
290	>	* The first exception encountered if any threadAssertXXX method fails.
291		*/
292	<	volatile boolean threadFailed;
292	>	private final AtomicReference<Throwable> threadFailure
293	>	= new AtomicReference<Throwable>(null);
294
295		/**
296	<	* Initialize test to indicate that no thread assertions have failed
296	>	* Records an exception so that it can be rethrown later in the test
297	>	* harness thread, triggering a test case failure.  Only the first
298	>	* failure is recorded; subsequent calls to this method from within
299	>	* the same test have no effect.
300		*/
301	<	public void setUp() {
301	>	public void threadRecordFailure(Throwable t) {
302	>	threadFailure.compareAndSet(null, t);
303	>	}
304	>
305	>	public void setUp() {
306		setDelays();
193	–	threadFailed = false;
307		}
308
309		/**
310	<	* Trigger test case failure if any thread assertions have failed
310	>	* Extra checks that get done for all test cases.
311	>	*
312	>	* Triggers test case failure if any thread assertions have failed,
313	>	* by rethrowing, in the test harness thread, any exception recorded
314	>	* earlier by threadRecordFailure.
315	>	*
316	>	* Triggers test case failure if interrupt status is set in the main thread.
317		*/
318	<	public void tearDown() {
319	<	assertFalse(threadFailed);
318	>	public void tearDown() throws Exception {
319	>	Throwable t = threadFailure.getAndSet(null);
320	>	if (t != null) {
321	>	if (t instanceof Error)
322	>	throw (Error) t;
323	>	else if (t instanceof RuntimeException)
324	>	throw (RuntimeException) t;
325	>	else if (t instanceof Exception)
326	>	throw (Exception) t;
327	>	else {
328	>	AssertionFailedError afe =
329	>	new AssertionFailedError(t.toString());
330	>	afe.initCause(t);
331	>	throw afe;
332	>	}
333	>	}
334	>
335	>	if (Thread.interrupted())
336	>	throw new AssertionFailedError("interrupt status set in main thread");
337		}
338
339		/**
340	<	* Fail, also setting status to indicate current testcase should fail
341	<	*/
340	>	* Just like fail(reason), but additionally recording (using
341	>	* threadRecordFailure) any AssertionFailedError thrown, so that
342	>	* the current testcase will fail.
343	>	*/
344		public void threadFail(String reason) {
345	<	threadFailed = true;
346	<	fail(reason);
345	>	try {
346	>	fail(reason);
347	>	} catch (AssertionFailedError t) {
348	>	threadRecordFailure(t);
349	>	fail(reason);
350	>	}
351		}
352
353		/**
354	<	* If expression not true, set status to indicate current testcase
355	<	* should fail
356	<	*/
354	>	* Just like assertTrue(b), but additionally recording (using
355	>	* threadRecordFailure) any AssertionFailedError thrown, so that
356	>	* the current testcase will fail.
357	>	*/
358		public void threadAssertTrue(boolean b) {
359	<	if (!b) {
217	<	threadFailed = true;
359	>	try {
360		assertTrue(b);
361	+	} catch (AssertionFailedError t) {
362	+	threadRecordFailure(t);
363	+	throw t;
364		}
365		}
366
367		/**
368	<	* If expression not false, set status to indicate current testcase
369	<	* should fail
370	<	*/
368	>	* Just like assertFalse(b), but additionally recording (using
369	>	* threadRecordFailure) any AssertionFailedError thrown, so that
370	>	* the current testcase will fail.
371	>	*/
372		public void threadAssertFalse(boolean b) {
373	<	if (b) {
228	<	threadFailed = true;
373	>	try {
374		assertFalse(b);
375	+	} catch (AssertionFailedError t) {
376	+	threadRecordFailure(t);
377	+	throw t;
378		}
379		}
380
381		/**
382	<	* If argument not null, set status to indicate current testcase
383	<	* should fail
384	<	*/
382	>	* Just like assertNull(x), but additionally recording (using
383	>	* threadRecordFailure) any AssertionFailedError thrown, so that
384	>	* the current testcase will fail.
385	>	*/
386		public void threadAssertNull(Object x) {
387	<	if (x != null) {
239	<	threadFailed = true;
387	>	try {
388		assertNull(x);
389	+	} catch (AssertionFailedError t) {
390	+	threadRecordFailure(t);
391	+	throw t;
392		}
393		}
394
395		/**
396	<	* If arguments not equal, set status to indicate current testcase
397	<	* should fail
398	<	*/
396	>	* Just like assertEquals(x, y), but additionally recording (using
397	>	* threadRecordFailure) any AssertionFailedError thrown, so that
398	>	* the current testcase will fail.
399	>	*/
400		public void threadAssertEquals(long x, long y) {
401	<	if (x != y) {
250	<	threadFailed = true;
401	>	try {
402		assertEquals(x, y);
403	+	} catch (AssertionFailedError t) {
404	+	threadRecordFailure(t);
405	+	throw t;
406		}
407		}
408
409		/**
410	<	* If arguments not equal, set status to indicate current testcase
411	<	* should fail
412	<	*/
410	>	* Just like assertEquals(x, y), but additionally recording (using
411	>	* threadRecordFailure) any AssertionFailedError thrown, so that
412	>	* the current testcase will fail.
413	>	*/
414		public void threadAssertEquals(Object x, Object y) {
415	<	if (x != y && (x == null || !x.equals(y))) {
261	<	threadFailed = true;
415	>	try {
416		assertEquals(x, y);
417	+	} catch (AssertionFailedError t) {
418	+	threadRecordFailure(t);
419	+	throw t;
420	+	} catch (Throwable t) {
421	+	threadUnexpectedException(t);
422		}
423		}
424
425		/**
426	<	* threadFail with message "should throw exception"
427	<	*/
426	>	* Just like assertSame(x, y), but additionally recording (using
427	>	* threadRecordFailure) any AssertionFailedError thrown, so that
428	>	* the current testcase will fail.
429	>	*/
430	>	public void threadAssertSame(Object x, Object y) {
431	>	try {
432	>	assertSame(x, y);
433	>	} catch (AssertionFailedError t) {
434	>	threadRecordFailure(t);
435	>	throw t;
436	>	}
437	>	}
438	>
439	>	/**
440	>	* Calls threadFail with message "should throw exception".
441	>	*/
442		public void threadShouldThrow() {
443	<	threadFailed = true;
271	<	fail("should throw exception");
443	>	threadFail("should throw exception");
444		}
445
446		/**
447	<	* threadFail with message "Unexpected exception"
447	>	* Calls threadFail with message "should throw" + exceptionName.
448		*/
449	<	public void threadUnexpectedException() {
450	<	threadFailed = true;
279	<	fail("Unexpected exception");
449	>	public void threadShouldThrow(String exceptionName) {
450	>	threadFail("should throw " + exceptionName);
451		}
452
453	+	/**
454	+	* Records the given exception using {@link #threadRecordFailure},
455	+	* then rethrows the exception, wrapping it in an
456	+	* AssertionFailedError if necessary.
457	+	*/
458	+	public void threadUnexpectedException(Throwable t) {
459	+	threadRecordFailure(t);
460	+	t.printStackTrace();
461	+	if (t instanceof RuntimeException)
462	+	throw (RuntimeException) t;
463	+	else if (t instanceof Error)
464	+	throw (Error) t;
465	+	else {
466	+	AssertionFailedError afe =
467	+	new AssertionFailedError("unexpected exception: " + t);
468	+	afe.initCause(t);
469	+	throw afe;
470	+	}
471	+	}
472	+
473	+	/**
474	+	* Delays, via Thread.sleep, for the given millisecond delay, but
475	+	* if the sleep is shorter than specified, may re-sleep or yield
476	+	* until time elapses.
477	+	*/
478	+	static void delay(long millis) throws InterruptedException {
479	+	long startTime = System.nanoTime();
480	+	long ns = millis * 1000 * 1000;
481	+	for (;;) {
482	+	if (millis > 0L)
483	+	Thread.sleep(millis);
484	+	else // too short to sleep
485	+	Thread.yield();
486	+	long d = ns - (System.nanoTime() - startTime);
487	+	if (d > 0L)
488	+	millis = d / (1000 * 1000);
489	+	else
490	+	break;
491	+	}
492	+	}
493
494		/**
495	<	* Wait out termination of a thread pool or fail doing so
495	>	* Waits out termination of a thread pool or fails doing so.
496		*/
497	<	public void joinPool(ExecutorService exec) {
497	>	void joinPool(ExecutorService exec) {
498		try {
499		exec.shutdown();
500	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
501	<	} catch(SecurityException ok) {
500	>	assertTrue("ExecutorService did not terminate in a timely manner",
501	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
502	>	} catch (SecurityException ok) {
503		// Allowed in case test doesn't have privs
504	<	} catch(InterruptedException ie) {
505	<	fail("Unexpected exception");
504	>	} catch (InterruptedException ie) {
505	>	fail("Unexpected InterruptedException");
506		}
507		}
508
509	+	/**
510	+	* Checks that thread does not terminate within the default
511	+	* millisecond delay of {@code timeoutMillis()}.
512	+	*/
513	+	void assertThreadStaysAlive(Thread thread) {
514	+	assertThreadStaysAlive(thread, timeoutMillis());
515	+	}
516	+
517	+	/**
518	+	* Checks that thread does not terminate within the given millisecond delay.
519	+	*/
520	+	void assertThreadStaysAlive(Thread thread, long millis) {
521	+	try {
522	+	// No need to optimize the failing case via Thread.join.
523	+	delay(millis);
524	+	assertTrue(thread.isAlive());
525	+	} catch (InterruptedException ie) {
526	+	fail("Unexpected InterruptedException");
527	+	}
528	+	}
529	+
530	+	/**
531	+	* Checks that future.get times out, with the default timeout of
532	+	* {@code timeoutMillis()}.
533	+	*/
534	+	void assertFutureTimesOut(Future future) {
535	+	assertFutureTimesOut(future, timeoutMillis());
536	+	}
537	+
538	+	/**
539	+	* Checks that future.get times out, with the given millisecond timeout.
540	+	*/
541	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
542	+	long startTime = System.nanoTime();
543	+	try {
544	+	future.get(timeoutMillis, MILLISECONDS);
545	+	shouldThrow();
546	+	} catch (TimeoutException success) {
547	+	} catch (Exception e) {
548	+	threadUnexpectedException(e);
549	+	} finally { future.cancel(true); }
550	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
551	+	}
552
553		/**
554	<	* fail with message "should throw exception"
555	<	*/
554	>	* Fails with message "should throw exception".
555	>	*/
556		public void shouldThrow() {
557		fail("Should throw exception");
558		}
559
560		/**
561	<	* fail with message "Unexpected exception"
561	>	* Fails with message "should throw " + exceptionName.
562		*/
563	<	public void unexpectedException() {
564	<	fail("Unexpected exception");
563	>	public void shouldThrow(String exceptionName) {
564	>	fail("Should throw " + exceptionName);
565		}
566
312	–
567		/**
568		* The number of elements to place in collections, arrays, etc.
569		*/
570	<	static final int SIZE = 20;
570	>	public static final int SIZE = 20;
571
572		// Some convenient Integer constants
573
574	<	static final Integer zero = new Integer(0);
575	<	static final Integer one = new Integer(1);
576	<	static final Integer two = new Integer(2);
577	<	static final Integer three  = new Integer(3);
578	<	static final Integer four  = new Integer(4);
579	<	static final Integer five  = new Integer(5);
580	<	static final Integer six = new Integer(6);
581	<	static final Integer seven = new Integer(7);
582	<	static final Integer eight = new Integer(8);
583	<	static final Integer nine = new Integer(9);
584	<	static final Integer m1  = new Integer(-1);
585	<	static final Integer m2  = new Integer(-2);
586	<	static final Integer m3  = new Integer(-3);
587	<	static final Integer m4 = new Integer(-4);
588	<	static final Integer m5 = new Integer(-5);
589	<	static final Integer m10 = new Integer(-10);
574	>	public static final Integer zero  = new Integer(0);
575	>	public static final Integer one   = new Integer(1);
576	>	public static final Integer two   = new Integer(2);
577	>	public static final Integer three = new Integer(3);
578	>	public static final Integer four  = new Integer(4);
579	>	public static final Integer five  = new Integer(5);
580	>	public static final Integer six   = new Integer(6);
581	>	public static final Integer seven = new Integer(7);
582	>	public static final Integer eight = new Integer(8);
583	>	public static final Integer nine  = new Integer(9);
584	>	public static final Integer m1  = new Integer(-1);
585	>	public static final Integer m2  = new Integer(-2);
586	>	public static final Integer m3  = new Integer(-3);
587	>	public static final Integer m4  = new Integer(-4);
588	>	public static final Integer m5  = new Integer(-5);
589	>	public static final Integer m6  = new Integer(-6);
590	>	public static final Integer m10 = new Integer(-10);
591
592
593		/**
594	+	* Runs Runnable r with a security policy that permits precisely
595	+	* the specified permissions.  If there is no current security
596	+	* manager, the runnable is run twice, both with and without a
597	+	* security manager.  We require that any security manager permit
598	+	* getPolicy/setPolicy.
599	+	*/
600	+	public void runWithPermissions(Runnable r, Permission... permissions) {
601	+	SecurityManager sm = System.getSecurityManager();
602	+	if (sm == null) {
603	+	r.run();
604	+	Policy savedPolicy = Policy.getPolicy();
605	+	try {
606	+	Policy.setPolicy(permissivePolicy());
607	+	System.setSecurityManager(new SecurityManager());
608	+	runWithPermissions(r, permissions);
609	+	} finally {
610	+	System.setSecurityManager(null);
611	+	Policy.setPolicy(savedPolicy);
612	+	}
613	+	} else {
614	+	Policy savedPolicy = Policy.getPolicy();
615	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
616	+	Policy.setPolicy(policy);
617	+
618	+	try {
619	+	r.run();
620	+	} finally {
621	+	policy.addPermission(new SecurityPermission("setPolicy"));
622	+	Policy.setPolicy(savedPolicy);
623	+	}
624	+	}
625	+	}
626	+
627	+	/**
628	+	* Runs a runnable without any permissions.
629	+	*/
630	+	public void runWithoutPermissions(Runnable r) {
631	+	runWithPermissions(r);
632	+	}
633	+
634	+	/**
635		* A security policy where new permissions can be dynamically added
636		* or all cleared.
637		*/
638	<	static class AdjustablePolicy extends java.security.Policy {
638	>	public static class AdjustablePolicy extends java.security.Policy {
639		Permissions perms = new Permissions();
640	<	AdjustablePolicy() { }
640	>	AdjustablePolicy(Permission... permissions) {
641	>	for (Permission permission : permissions)
642	>	perms.add(permission);
643	>	}
644		void addPermission(Permission perm) { perms.add(perm); }
645		void clearPermissions() { perms = new Permissions(); }
646	<	public PermissionCollection getPermissions(CodeSource cs) {
647	<	return perms;
648	<	}
649	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
650	<	return perms;
651	<	}
652	<	public boolean implies(ProtectionDomain pd, Permission p) {
653	<	return perms.implies(p);
654	<	}
655	<	public void refresh() {}
646	>	public PermissionCollection getPermissions(CodeSource cs) {
647	>	return perms;
648	>	}
649	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
650	>	return perms;
651	>	}
652	>	public boolean implies(ProtectionDomain pd, Permission p) {
653	>	return perms.implies(p);
654	>	}
655	>	public void refresh() {}
656		}
657
658	+	/**
659	+	* Returns a policy containing all the permissions we ever need.
660	+	*/
661	+	public static Policy permissivePolicy() {
662	+	return new AdjustablePolicy
663	+	// Permissions j.u.c. needs directly
664	+	(new RuntimePermission("modifyThread"),
665	+	new RuntimePermission("getClassLoader"),
666	+	new RuntimePermission("setContextClassLoader"),
667	+	// Permissions needed to change permissions!
668	+	new SecurityPermission("getPolicy"),
669	+	new SecurityPermission("setPolicy"),
670	+	new RuntimePermission("setSecurityManager"),
671	+	// Permissions needed by the junit test harness
672	+	new RuntimePermission("accessDeclaredMembers"),
673	+	new PropertyPermission("*", "read"),
674	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
675	+	}
676
677	<	// Some convenient Runnable classes
677	>	/**
678	>	* Sleeps until the given time has elapsed.
679	>	* Throws AssertionFailedError if interrupted.
680	>	*/
681	>	void sleep(long millis) {
682	>	try {
683	>	delay(millis);
684	>	} catch (InterruptedException ie) {
685	>	AssertionFailedError afe =
686	>	new AssertionFailedError("Unexpected InterruptedException");
687	>	afe.initCause(ie);
688	>	throw afe;
689	>	}
690	>	}
691
692	<	static class NoOpRunnable implements Runnable {
693	<	public void run() {}
692	>	/**
693	>	* Spin-waits up to the specified number of milliseconds for the given
694	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
695	>	*/
696	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
697	>	long startTime = System.nanoTime();
698	>	for (;;) {
699	>	Thread.State s = thread.getState();
700	>	if (s == Thread.State.BLOCKED ||
701	>	s == Thread.State.WAITING ||
702	>	s == Thread.State.TIMED_WAITING)
703	>	return;
704	>	else if (s == Thread.State.TERMINATED)
705	>	fail("Unexpected thread termination");
706	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
707	>	threadAssertTrue(thread.isAlive());
708	>	return;
709	>	}
710	>	Thread.yield();
711	>	}
712		}
713
714	<	static class NoOpCallable implements Callable {
715	<	public Object call() { return Boolean.TRUE; }
714	>	/**
715	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
716	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
717	>	*/
718	>	void waitForThreadToEnterWaitState(Thread thread) {
719	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
720		}
721
722	<	static final String TEST_STRING = "a test string";
722	>	/**
723	>	* Returns the number of milliseconds since time given by
724	>	* startNanoTime, which must have been previously returned from a
725	>	* call to {@link System.nanoTime()}.
726	>	*/
727	>	long millisElapsedSince(long startNanoTime) {
728	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
729	>	}
730
731	<	static class StringTask implements Callable<String> {
732	<	public String call() { return TEST_STRING; }
731	>	/**
732	>	* Returns a new started daemon Thread running the given runnable.
733	>	*/
734	>	Thread newStartedThread(Runnable runnable) {
735	>	Thread t = new Thread(runnable);
736	>	t.setDaemon(true);
737	>	t.start();
738	>	return t;
739		}
740
741	<	static class NPETask implements Callable<String> {
742	<	public String call() { throw new NullPointerException(); }
741	>	/**
742	>	* Waits for the specified time (in milliseconds) for the thread
743	>	* to terminate (using {@link Thread#join(long)}), else interrupts
744	>	* the thread (in the hope that it may terminate later) and fails.
745	>	*/
746	>	void awaitTermination(Thread t, long timeoutMillis) {
747	>	try {
748	>	t.join(timeoutMillis);
749	>	} catch (InterruptedException ie) {
750	>	threadUnexpectedException(ie);
751	>	} finally {
752	>	if (t.getState() != Thread.State.TERMINATED) {
753	>	t.interrupt();
754	>	fail("Test timed out");
755	>	}
756	>	}
757		}
758
759	<	static class CallableOne implements Callable<Integer> {
760	<	public Integer call() { return one; }
759	>	/**
760	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
761	>	* terminate (using {@link Thread#join(long)}), else interrupts
762	>	* the thread (in the hope that it may terminate later) and fails.
763	>	*/
764	>	void awaitTermination(Thread t) {
765	>	awaitTermination(t, LONG_DELAY_MS);
766		}
767
768	<	class ShortRunnable implements Runnable {
769	<	public void run() {
768	>	// Some convenient Runnable classes
769	>
770	>	public abstract class CheckedRunnable implements Runnable {
771	>	protected abstract void realRun() throws Throwable;
772	>
773	>	public final void run() {
774		try {
775	<	Thread.sleep(SHORT_DELAY_MS);
776	<	}
777	<	catch(Exception e) {
390	<	threadUnexpectedException();
775	>	realRun();
776	>	} catch (Throwable t) {
777	>	threadUnexpectedException(t);
778		}
779		}
780		}
781
782	<	class ShortInterruptedRunnable implements Runnable {
783	<	public void run() {
782	>	public abstract class RunnableShouldThrow implements Runnable {
783	>	protected abstract void realRun() throws Throwable;
784	>
785	>	final Class<?> exceptionClass;
786	>
787	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
788	>	this.exceptionClass = exceptionClass;
789	>	}
790	>
791	>	public final void run() {
792		try {
793	<	Thread.sleep(SHORT_DELAY_MS);
794	<	threadShouldThrow();
795	<	}
796	<	catch(InterruptedException success) {
793	>	realRun();
794	>	threadShouldThrow(exceptionClass.getSimpleName());
795	>	} catch (Throwable t) {
796	>	if (! exceptionClass.isInstance(t))
797	>	threadUnexpectedException(t);
798		}
799		}
800		}
801
802	<	class SmallRunnable implements Runnable {
803	<	public void run() {
802	>	public abstract class ThreadShouldThrow extends Thread {
803	>	protected abstract void realRun() throws Throwable;
804	>
805	>	final Class<?> exceptionClass;
806	>
807	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
808	>	this.exceptionClass = exceptionClass;
809	>	}
810	>
811	>	public final void run() {
812		try {
813	<	Thread.sleep(SMALL_DELAY_MS);
814	<	}
815	<	catch(Exception e) {
816	<	threadUnexpectedException();
813	>	realRun();
814	>	threadShouldThrow(exceptionClass.getSimpleName());
815	>	} catch (Throwable t) {
816	>	if (! exceptionClass.isInstance(t))
817	>	threadUnexpectedException(t);
818		}
819		}
820		}
821
822	<	class SmallPossiblyInterruptedRunnable implements Runnable {
823	<	public void run() {
822	>	public abstract class CheckedInterruptedRunnable implements Runnable {
823	>	protected abstract void realRun() throws Throwable;
824	>
825	>	public final void run() {
826		try {
827	<	Thread.sleep(SMALL_DELAY_MS);
828	<	}
829	<	catch(Exception e) {
827	>	realRun();
828	>	threadShouldThrow("InterruptedException");
829	>	} catch (InterruptedException success) {
830	>	threadAssertFalse(Thread.interrupted());
831	>	} catch (Throwable t) {
832	>	threadUnexpectedException(t);
833		}
834		}
835		}
836
837	<	class SmallCallable implements Callable {
838	<	public Object call() {
837	>	public abstract class CheckedCallable<T> implements Callable<T> {
838	>	protected abstract T realCall() throws Throwable;
839	>
840	>	public final T call() {
841		try {
842	<	Thread.sleep(SMALL_DELAY_MS);
842	>	return realCall();
843	>	} catch (Throwable t) {
844	>	threadUnexpectedException(t);
845	>	return null;
846		}
432	–	catch(Exception e) {
433	–	threadUnexpectedException();
434	–	}
435	–	return Boolean.TRUE;
847		}
848		}
849
850	<	class SmallInterruptedRunnable implements Runnable {
851	<	public void run() {
850	>	public abstract class CheckedInterruptedCallable<T>
851	>	implements Callable<T> {
852	>	protected abstract T realCall() throws Throwable;
853	>
854	>	public final T call() {
855		try {
856	<	Thread.sleep(SMALL_DELAY_MS);
857	<	threadShouldThrow();
858	<	}
859	<	catch(InterruptedException success) {
856	>	T result = realCall();
857	>	threadShouldThrow("InterruptedException");
858	>	return result;
859	>	} catch (InterruptedException success) {
860	>	threadAssertFalse(Thread.interrupted());
861	>	} catch (Throwable t) {
862	>	threadUnexpectedException(t);
863		}
864	+	return null;
865		}
866		}
867
868	+	public static class NoOpRunnable implements Runnable {
869	+	public void run() {}
870	+	}
871
872	<	class MediumRunnable implements Runnable {
873	<	public void run() {
874	<	try {
875	<	Thread.sleep(MEDIUM_DELAY_MS);
876	<	}
877	<	catch(Exception e) {
878	<	threadUnexpectedException();
879	<	}
872	>	public static class NoOpCallable implements Callable {
873	>	public Object call() { return Boolean.TRUE; }
874	>	}
875	>
876	>	public static final String TEST_STRING = "a test string";
877	>
878	>	public static class StringTask implements Callable<String> {
879	>	public String call() { return TEST_STRING; }
880	>	}
881	>
882	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
883	>	return new CheckedCallable<String>() {
884	>	protected String realCall() {
885	>	try {
886	>	latch.await();
887	>	} catch (InterruptedException quittingTime) {}
888	>	return TEST_STRING;
889	>	}};
890	>	}
891	>
892	>	public Runnable awaiter(final CountDownLatch latch) {
893	>	return new CheckedRunnable() {
894	>	public void realRun() throws InterruptedException {
895	>	await(latch);
896	>	}};
897	>	}
898	>
899	>	public void await(CountDownLatch latch) {
900	>	try {
901	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
902	>	} catch (Throwable t) {
903	>	threadUnexpectedException(t);
904		}
905		}
906
907	<	class MediumInterruptedRunnable implements Runnable {
908	<	public void run() {
907	>	public void await(Semaphore semaphore) {
908	>	try {
909	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
910	>	} catch (Throwable t) {
911	>	threadUnexpectedException(t);
912	>	}
913	>	}
914	>
915	>	//     /**
916	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
917	>	//      */
918	>	//     public void await(AtomicBoolean flag) {
919	>	//         await(flag, LONG_DELAY_MS);
920	>	//     }
921	>
922	>	//     /**
923	>	//      * Spin-waits up to the specified timeout until flag becomes true.
924	>	//      */
925	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
926	>	//         long startTime = System.nanoTime();
927	>	//         while (!flag.get()) {
928	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
929	>	//                 throw new AssertionFailedError("timed out");
930	>	//             Thread.yield();
931	>	//         }
932	>	//     }
933	>
934	>	public static class NPETask implements Callable<String> {
935	>	public String call() { throw new NullPointerException(); }
936	>	}
937	>
938	>	public static class CallableOne implements Callable<Integer> {
939	>	public Integer call() { return one; }
940	>	}
941	>
942	>	public class ShortRunnable extends CheckedRunnable {
943	>	protected void realRun() throws Throwable {
944	>	delay(SHORT_DELAY_MS);
945	>	}
946	>	}
947	>
948	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
949	>	protected void realRun() throws InterruptedException {
950	>	delay(SHORT_DELAY_MS);
951	>	}
952	>	}
953	>
954	>	public class SmallRunnable extends CheckedRunnable {
955	>	protected void realRun() throws Throwable {
956	>	delay(SMALL_DELAY_MS);
957	>	}
958	>	}
959	>
960	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
961	>	protected void realRun() {
962		try {
963	<	Thread.sleep(MEDIUM_DELAY_MS);
964	<	threadShouldThrow();
467	<	}
468	<	catch(InterruptedException success) {
469	<	}
963	>	delay(SMALL_DELAY_MS);
964	>	} catch (InterruptedException ok) {}
965		}
966		}
967
968	<	class MediumPossiblyInterruptedRunnable implements Runnable {
969	<	public void run() {
968	>	public class SmallCallable extends CheckedCallable {
969	>	protected Object realCall() throws InterruptedException {
970	>	delay(SMALL_DELAY_MS);
971	>	return Boolean.TRUE;
972	>	}
973	>	}
974	>
975	>	public class MediumRunnable extends CheckedRunnable {
976	>	protected void realRun() throws Throwable {
977	>	delay(MEDIUM_DELAY_MS);
978	>	}
979	>	}
980	>
981	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
982	>	protected void realRun() throws InterruptedException {
983	>	delay(MEDIUM_DELAY_MS);
984	>	}
985	>	}
986	>
987	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
988	>	return new CheckedRunnable() {
989	>	protected void realRun() {
990	>	try {
991	>	delay(timeoutMillis);
992	>	} catch (InterruptedException ok) {}
993	>	}};
994	>	}
995	>
996	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
997	>	protected void realRun() {
998		try {
999	<	Thread.sleep(MEDIUM_DELAY_MS);
1000	<	}
478	<	catch(InterruptedException success) {
479	<	}
999	>	delay(MEDIUM_DELAY_MS);
1000	>	} catch (InterruptedException ok) {}
1001		}
1002		}
1003
1004	<	class LongPossiblyInterruptedRunnable implements Runnable {
1005	<	public void run() {
1004	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1005	>	protected void realRun() {
1006		try {
1007	<	Thread.sleep(LONG_DELAY_MS);
1008	<	}
488	<	catch(InterruptedException success) {
489	<	}
1007	>	delay(LONG_DELAY_MS);
1008	>	} catch (InterruptedException ok) {}
1009		}
1010		}
1011
1012		/**
1013		* For use as ThreadFactory in constructors
1014		*/
1015	<	static class SimpleThreadFactory implements ThreadFactory{
1016	<	public Thread newThread(Runnable r){
1015	>	public static class SimpleThreadFactory implements ThreadFactory {
1016	>	public Thread newThread(Runnable r) {
1017		return new Thread(r);
1018	<	}
1018	>	}
1019		}
1020
1021	<	static class TrackedShortRunnable implements Runnable {
1022	<	volatile boolean done = false;
1021	>	public interface TrackedRunnable extends Runnable {
1022	>	boolean isDone();
1023	>	}
1024	>
1025	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1026	>	return new TrackedRunnable() {
1027	>	private volatile boolean done = false;
1028	>	public boolean isDone() { return done; }
1029	>	public void run() {
1030	>	try {
1031	>	delay(timeoutMillis);
1032	>	done = true;
1033	>	} catch (InterruptedException ok) {}
1034	>	}
1035	>	};
1036	>	}
1037	>
1038	>	public static class TrackedShortRunnable implements Runnable {
1039	>	public volatile boolean done = false;
1040		public void run() {
1041		try {
1042	<	Thread.sleep(SMALL_DELAY_MS);
1042	>	delay(SHORT_DELAY_MS);
1043		done = true;
1044	<	} catch(Exception e){
509	<	}
1044	>	} catch (InterruptedException ok) {}
1045		}
1046		}
1047
1048	<	static class TrackedMediumRunnable implements Runnable {
1049	<	volatile boolean done = false;
1048	>	public static class TrackedSmallRunnable implements Runnable {
1049	>	public volatile boolean done = false;
1050		public void run() {
1051		try {
1052	<	Thread.sleep(MEDIUM_DELAY_MS);
1052	>	delay(SMALL_DELAY_MS);
1053		done = true;
1054	<	} catch(Exception e){
520	<	}
1054	>	} catch (InterruptedException ok) {}
1055		}
1056		}
1057
1058	<	static class TrackedLongRunnable implements Runnable {
1059	<	volatile boolean done = false;
1058	>	public static class TrackedMediumRunnable implements Runnable {
1059	>	public volatile boolean done = false;
1060		public void run() {
1061		try {
1062	<	Thread.sleep(LONG_DELAY_MS);
1062	>	delay(MEDIUM_DELAY_MS);
1063		done = true;
1064	<	} catch(Exception e){
531	<	}
1064	>	} catch (InterruptedException ok) {}
1065		}
1066		}
1067
1068	<	static class TrackedNoOpRunnable implements Runnable {
1069	<	volatile boolean done = false;
1068	>	public static class TrackedLongRunnable implements Runnable {
1069	>	public volatile boolean done = false;
1070	>	public void run() {
1071	>	try {
1072	>	delay(LONG_DELAY_MS);
1073	>	done = true;
1074	>	} catch (InterruptedException ok) {}
1075	>	}
1076	>	}
1077	>
1078	>	public static class TrackedNoOpRunnable implements Runnable {
1079	>	public volatile boolean done = false;
1080		public void run() {
1081		done = true;
1082		}
1083		}
1084
1085	<	static class TrackedCallable implements Callable {
1086	<	volatile boolean done = false;
1085	>	public static class TrackedCallable implements Callable {
1086	>	public volatile boolean done = false;
1087		public Object call() {
1088		try {
1089	<	Thread.sleep(SMALL_DELAY_MS);
1089	>	delay(SMALL_DELAY_MS);
1090		done = true;
1091	<	} catch(Exception e){
549	<	}
1091	>	} catch (InterruptedException ok) {}
1092		return Boolean.TRUE;
1093		}
1094		}
1095
1096	+	/**
1097	+	* Analog of CheckedRunnable for RecursiveAction
1098	+	*/
1099	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1100	+	protected abstract void realCompute() throws Throwable;
1101	+
1102	+	public final void compute() {
1103	+	try {
1104	+	realCompute();
1105	+	} catch (Throwable t) {
1106	+	threadUnexpectedException(t);
1107	+	}
1108	+	}
1109	+	}
1110	+
1111	+	/**
1112	+	* Analog of CheckedCallable for RecursiveTask
1113	+	*/
1114	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1115	+	protected abstract T realCompute() throws Throwable;
1116	+
1117	+	public final T compute() {
1118	+	try {
1119	+	return realCompute();
1120	+	} catch (Throwable t) {
1121	+	threadUnexpectedException(t);
1122	+	return null;
1123	+	}
1124	+	}
1125	+	}
1126
1127		/**
1128		* For use as RejectedExecutionHandler in constructors
1129		*/
1130	<	static class NoOpREHandler implements RejectedExecutionHandler{
1131	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1130	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1131	>	public void rejectedExecution(Runnable r,
1132	>	ThreadPoolExecutor executor) {}
1133	>	}
1134	>
1135	>	/**
1136	>	* A CyclicBarrier that uses timed await and fails with
1137	>	* AssertionFailedErrors instead of throwing checked exceptions.
1138	>	*/
1139	>	public class CheckedBarrier extends CyclicBarrier {
1140	>	public CheckedBarrier(int parties) { super(parties); }
1141	>
1142	>	public int await() {
1143	>	try {
1144	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1145	>	} catch (TimeoutException e) {
1146	>	throw new AssertionFailedError("timed out");
1147	>	} catch (Exception e) {
1148	>	AssertionFailedError afe =
1149	>	new AssertionFailedError("Unexpected exception: " + e);
1150	>	afe.initCause(e);
1151	>	throw afe;
1152	>	}
1153	>	}
1154	>	}
1155	>
1156	>	void checkEmpty(BlockingQueue q) {
1157	>	try {
1158	>	assertTrue(q.isEmpty());
1159	>	assertEquals(0, q.size());
1160	>	assertNull(q.peek());
1161	>	assertNull(q.poll());
1162	>	assertNull(q.poll(0, MILLISECONDS));
1163	>	assertEquals(q.toString(), "[]");
1164	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1165	>	assertFalse(q.iterator().hasNext());
1166	>	try {
1167	>	q.element();
1168	>	shouldThrow();
1169	>	} catch (NoSuchElementException success) {}
1170	>	try {
1171	>	q.iterator().next();
1172	>	shouldThrow();
1173	>	} catch (NoSuchElementException success) {}
1174	>	try {
1175	>	q.remove();
1176	>	shouldThrow();
1177	>	} catch (NoSuchElementException success) {}
1178	>	} catch (InterruptedException ie) {
1179	>	threadUnexpectedException(ie);
1180	>	}
1181	>	}
1182	>
1183	>	@SuppressWarnings("unchecked")
1184	>	<T> T serialClone(T o) {
1185	>	try {
1186	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1187	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1188	>	oos.writeObject(o);
1189	>	oos.flush();
1190	>	oos.close();
1191	>	ObjectInputStream ois = new ObjectInputStream
1192	>	(new ByteArrayInputStream(bos.toByteArray()));
1193	>	T clone = (T) ois.readObject();
1194	>	assertSame(o.getClass(), clone.getClass());
1195	>	return clone;
1196	>	} catch (Throwable t) {
1197	>	threadUnexpectedException(t);
1198	>	return null;
1199	>	}
1200		}
561	–
562	–
1201		}

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