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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.2 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.105 by dl, Thu Mar 21 19:06:54 2013 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import 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.lang.management.ManagementFactory;
15	>	import java.lang.management.ThreadInfo;
16	>	import java.lang.reflect.Method;
17	>	import java.util.ArrayList;
18	>	import java.util.Arrays;
19	>	import java.util.Date;
20	>	import java.util.Enumeration;
21	>	import java.util.List;
22	>	import java.util.NoSuchElementException;
23	>	import java.util.PropertyPermission;
24		import java.util.concurrent.*;
25	<	import java.io.*;
26	<
25	>	import java.util.concurrent.atomic.AtomicBoolean;
26	>	import java.util.concurrent.atomic.AtomicReference;
27	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
28	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
29	>	import java.security.CodeSource;
30	>	import java.security.Permission;
31	>	import java.security.PermissionCollection;
32	>	import java.security.Permissions;
33	>	import java.security.Policy;
34	>	import java.security.ProtectionDomain;
35	>	import java.security.SecurityPermission;
36
37		/**
38	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
39	<	* utility methods, as well as a simple framework for helping to make
40	<	* sure that assertions failing in generated threads cause the
41	<	* associated test that generated them to itself fail (which JUnit doe
42	<	* not otherwise arrange).  The rules for creating such tests are:
38	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
39	>	* utility methods and classes, as well as a simple framework for
40	>	* helping to make sure that assertions failing in generated threads
41	>	* cause the associated test that generated them to itself fail (which
42	>	* JUnit does not otherwise arrange).  The rules for creating such
43	>	* tests are:
44		*
45		* <ol>
46		*
47		* <li> All assertions in code running in generated threads must use
48	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
49	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
50	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
48	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
49	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
50	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
51		* particularly recommended) for other code to use these forms too.
52		* Only the most typically used JUnit assertion methods are defined
53		* this way, but enough to live with.</li>
54		*
55	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
56	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
55	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
56	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
57		* them. These methods are used to clear and check for thread
58		* assertion failures.</li>
59		*
60	<	* <li>All delays and timeouts must use one of the constants {@link
61	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
62	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
63	<	* discriminatable from zero time, and always allows enough time for
64	<	* the small amounts of computation (creating a thread, calling a few
60	>	* <li>All delays and timeouts must use one of the constants {@code
61	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
62	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
63	>	* discriminable from zero time, and always allows enough time for the
64	>	* small amounts of computation (creating a thread, calling a few
65		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
66		* is always discriminable as larger than SHORT and smaller than
67		* MEDIUM.  And so on. These constants are set to conservative values,
68		* but even so, if there is ever any doubt, they can all be increased
69	<	* in one spot to rerun tests on slower platforms</li>
69	>	* in one spot to rerun tests on slower platforms.</li>
70		*
71		* <li> All threads generated must be joined inside each test case
72	<	* method (or <tt>fail</tt> to do so) before returning from the
73	<	* method. The {@link joinPool} method can be used to do this when
72	>	* method (or {@code fail} to do so) before returning from the
73	>	* method. The {@code joinPool} method can be used to do this when
74		* using Executors.</li>
75		*
76		* </ol>
77	+	*
78	+	* <p><b>Other notes</b>
79	+	* <ul>
80	+	*
81	+	* <li> Usually, there is one testcase method per JSR166 method
82	+	* covering "normal" operation, and then as many exception-testing
83	+	* methods as there are exceptions the method can throw. Sometimes
84	+	* there are multiple tests per JSR166 method when the different
85	+	* "normal" behaviors differ significantly. And sometimes testcases
86	+	* cover multiple methods when they cannot be tested in
87	+	* isolation.</li>
88	+	*
89	+	* <li> The documentation style for testcases is to provide as javadoc
90	+	* a simple sentence or two describing the property that the testcase
91	+	* method purports to test. The javadocs do not say anything about how
92	+	* the property is tested. To find out, read the code.</li>
93	+	*
94	+	* <li> These tests are "conformance tests", and do not attempt to
95	+	* test throughput, latency, scalability or other performance factors
96	+	* (see the separate "jtreg" tests for a set intended to check these
97	+	* for the most central aspects of functionality.) So, most tests use
98	+	* the smallest sensible numbers of threads, collection sizes, etc
99	+	* needed to check basic conformance.</li>
100	+	*
101	+	* <li>The test classes currently do not declare inclusion in
102	+	* any particular package to simplify things for people integrating
103	+	* them in TCK test suites.</li>
104	+	*
105	+	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
106	+	* runs all JSR166 unit tests.</li>
107	+	*
108	+	* </ul>
109		*/
110		public class JSR166TestCase extends TestCase {
111	+	private static final boolean useSecurityManager =
112	+	Boolean.getBoolean("jsr166.useSecurityManager");
113	+
114	+	protected static final boolean expensiveTests =
115	+	Boolean.getBoolean("jsr166.expensiveTests");
116	+
117	+	/**
118	+	* If true, report on stdout all "slow" tests, that is, ones that
119	+	* take more than profileThreshold milliseconds to execute.
120	+	*/
121	+	private static final boolean profileTests =
122	+	Boolean.getBoolean("jsr166.profileTests");
123	+
124	+	/**
125	+	* The number of milliseconds that tests are permitted for
126	+	* execution without being reported, when profileTests is set.
127	+	*/
128	+	private static final long profileThreshold =
129	+	Long.getLong("jsr166.profileThreshold", 100);
130	+
131	+	protected void runTest() throws Throwable {
132	+	if (profileTests)
133	+	runTestProfiled();
134	+	else
135	+	super.runTest();
136	+	}
137	+
138	+	protected void runTestProfiled() throws Throwable {
139	+	long t0 = System.nanoTime();
140	+	try {
141	+	super.runTest();
142	+	} finally {
143	+	long elapsedMillis =
144	+	(System.nanoTime() - t0) / (1000L * 1000L);
145	+	if (elapsedMillis >= profileThreshold)
146	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
147	+	}
148	+	}
149	+
150	+	/**
151	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
152	+	* Optional command line arg provides the number of iterations to
153	+	* repeat running the tests.
154	+	*/
155	+	public static void main(String[] args) {
156	+	if (useSecurityManager) {
157	+	System.err.println("Setting a permissive security manager");
158	+	Policy.setPolicy(permissivePolicy());
159	+	System.setSecurityManager(new SecurityManager());
160	+	}
161	+	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
162	+
163	+	Test s = suite();
164	+	for (int i = 0; i < iters; ++i) {
165	+	junit.textui.TestRunner.run(s);
166	+	System.gc();
167	+	System.runFinalization();
168	+	}
169	+	System.exit(0);
170	+	}
171	+
172	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
173	+	TestSuite suite = new TestSuite();
174	+	for (Object suiteOrClass : suiteOrClasses) {
175	+	if (suiteOrClass instanceof TestSuite)
176	+	suite.addTest((TestSuite) suiteOrClass);
177	+	else if (suiteOrClass instanceof Class)
178	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
179	+	else
180	+	throw new ClassCastException("not a test suite or class");
181	+	}
182	+	return suite;
183	+	}
184	+
185	+	public static void addNamedTestClasses(TestSuite suite,
186	+	String... testClassNames) {
187	+	for (String testClassName : testClassNames) {
188	+	try {
189	+	Class<?> testClass = Class.forName(testClassName);
190	+	Method m = testClass.getDeclaredMethod("suite",
191	+	new Class<?>[0]);
192	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
193	+	} catch (Exception e) {
194	+	throw new Error("Missing test class", e);
195	+	}
196	+	}
197	+	}
198	+
199	+	public static final double JAVA_CLASS_VERSION;
200	+	static {
201	+	try {
202	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
203	+	new java.security.PrivilegedAction<Double>() {
204	+	public Double run() {
205	+	return Double.valueOf(System.getProperty("java.class.version"));}});
206	+	} catch (Throwable t) {
207	+	throw new Error(t);
208	+	}
209	+	}
210	+
211	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
212	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
213	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
214	+
215	+	/**
216	+	* Collects all JSR166 unit tests as one suite.
217	+	*/
218	+	public static Test suite() {
219	+	// Java7+ test classes
220	+	TestSuite suite = newTestSuite(
221	+	ForkJoinPoolTest.suite(),
222	+	ForkJoinTaskTest.suite(),
223	+	RecursiveActionTest.suite(),
224	+	RecursiveTaskTest.suite(),
225	+	LinkedTransferQueueTest.suite(),
226	+	PhaserTest.suite(),
227	+	ThreadLocalRandomTest.suite(),
228	+	AbstractExecutorServiceTest.suite(),
229	+	AbstractQueueTest.suite(),
230	+	AbstractQueuedSynchronizerTest.suite(),
231	+	AbstractQueuedLongSynchronizerTest.suite(),
232	+	ArrayBlockingQueueTest.suite(),
233	+	ArrayDequeTest.suite(),
234	+	AtomicBooleanTest.suite(),
235	+	AtomicIntegerArrayTest.suite(),
236	+	AtomicIntegerFieldUpdaterTest.suite(),
237	+	AtomicIntegerTest.suite(),
238	+	AtomicLongArrayTest.suite(),
239	+	AtomicLongFieldUpdaterTest.suite(),
240	+	AtomicLongTest.suite(),
241	+	AtomicMarkableReferenceTest.suite(),
242	+	AtomicReferenceArrayTest.suite(),
243	+	AtomicReferenceFieldUpdaterTest.suite(),
244	+	AtomicReferenceTest.suite(),
245	+	AtomicStampedReferenceTest.suite(),
246	+	ConcurrentHashMapTest.suite(),
247	+	ConcurrentLinkedDequeTest.suite(),
248	+	ConcurrentLinkedQueueTest.suite(),
249	+	ConcurrentSkipListMapTest.suite(),
250	+	ConcurrentSkipListSubMapTest.suite(),
251	+	ConcurrentSkipListSetTest.suite(),
252	+	ConcurrentSkipListSubSetTest.suite(),
253	+	CopyOnWriteArrayListTest.suite(),
254	+	CopyOnWriteArraySetTest.suite(),
255	+	CountDownLatchTest.suite(),
256	+	CyclicBarrierTest.suite(),
257	+	DelayQueueTest.suite(),
258	+	EntryTest.suite(),
259	+	ExchangerTest.suite(),
260	+	ExecutorsTest.suite(),
261	+	ExecutorCompletionServiceTest.suite(),
262	+	FutureTaskTest.suite(),
263	+	LinkedBlockingDequeTest.suite(),
264	+	LinkedBlockingQueueTest.suite(),
265	+	LinkedListTest.suite(),
266	+	LockSupportTest.suite(),
267	+	PriorityBlockingQueueTest.suite(),
268	+	PriorityQueueTest.suite(),
269	+	ReentrantLockTest.suite(),
270	+	ReentrantReadWriteLockTest.suite(),
271	+	ScheduledExecutorTest.suite(),
272	+	ScheduledExecutorSubclassTest.suite(),
273	+	SemaphoreTest.suite(),
274	+	SynchronousQueueTest.suite(),
275	+	SystemTest.suite(),
276	+	ThreadLocalTest.suite(),
277	+	ThreadPoolExecutorTest.suite(),
278	+	ThreadPoolExecutorSubclassTest.suite(),
279	+	ThreadTest.suite(),
280	+	TimeUnitTest.suite(),
281	+	TreeMapTest.suite(),
282	+	TreeSetTest.suite(),
283	+	TreeSubMapTest.suite(),
284	+	TreeSubSetTest.suite());
285	+
286	+	// Java8+ test classes
287	+	if (atLeastJava8()) {
288	+	String[] java8TestClassNames = {
289	+	"CompletableFutureTest",
290	+	"ConcurrentHashMap8Test",
291	+	"CountedCompleterTest",
292	+	"DoubleAccumulatorTest",
293	+	"DoubleAdderTest",
294	+	"ForkJoinPool8Test",
295	+	"LongAccumulatorTest",
296	+	"LongAdderTest",
297	+	"StampedLockTest",
298	+	};
299	+	addNamedTestClasses(suite, java8TestClassNames);
300	+	}
301	+
302	+	return suite;
303	+	}
304	+
305
306		public static long SHORT_DELAY_MS;
307		public static long SMALL_DELAY_MS;
#	Line 60 | Line 310 | public class JSR166TestCase extends Test
310
311
312		/**
313	<	* Return the shortest timed delay. This could
314	<	* be reimplmented to use for example a Property.
315	<	*/
313	>	* Returns the shortest timed delay. This could
314	>	* be reimplemented to use for example a Property.
315	>	*/
316		protected long getShortDelay() {
317		return 50;
318		}
319
70	–
320		/**
321	<	* Set delays as multiples fo SHORT_DELAY.
321	>	* Sets delays as multiples of SHORT_DELAY.
322		*/
323	<	protected  void setDelays() {
323	>	protected void setDelays() {
324		SHORT_DELAY_MS = getShortDelay();
325	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
325	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
326		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
327	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
327	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
328	>	}
329	>
330	>	/**
331	>	* Returns a timeout in milliseconds to be used in tests that
332	>	* verify that operations block or time out.
333	>	*/
334	>	long timeoutMillis() {
335	>	return SHORT_DELAY_MS / 4;
336	>	}
337	>
338	>	/**
339	>	* Returns a new Date instance representing a time delayMillis
340	>	* milliseconds in the future.
341	>	*/
342	>	Date delayedDate(long delayMillis) {
343	>	return new Date(System.currentTimeMillis() + delayMillis);
344		}
345
346		/**
347	<	* Flag set true if any threadAssert methods fail
347	>	* The first exception encountered if any threadAssertXXX method fails.
348		*/
349	<	protected volatile boolean threadFailed;
349	>	private final AtomicReference<Throwable> threadFailure
350	>	= new AtomicReference<Throwable>(null);
351
352		/**
353	<	* Initialize test to indicat that no thread assertions have failed
353	>	* Records an exception so that it can be rethrown later in the test
354	>	* harness thread, triggering a test case failure.  Only the first
355	>	* failure is recorded; subsequent calls to this method from within
356	>	* the same test have no effect.
357		*/
358	<	public void setUp() {
358	>	public void threadRecordFailure(Throwable t) {
359	>	threadFailure.compareAndSet(null, t);
360	>	}
361	>
362	>	public void setUp() {
363		setDelays();
91	–	threadFailed = false;
364		}
365
366		/**
367	<	* Trigger test case failure if any thread assertions have failed
367	>	* Extra checks that get done for all test cases.
368	>	*
369	>	* Triggers test case failure if any thread assertions have failed,
370	>	* by rethrowing, in the test harness thread, any exception recorded
371	>	* earlier by threadRecordFailure.
372	>	*
373	>	* Triggers test case failure if interrupt status is set in the main thread.
374	>	*/
375	>	public void tearDown() throws Exception {
376	>	Throwable t = threadFailure.getAndSet(null);
377	>	if (t != null) {
378	>	if (t instanceof Error)
379	>	throw (Error) t;
380	>	else if (t instanceof RuntimeException)
381	>	throw (RuntimeException) t;
382	>	else if (t instanceof Exception)
383	>	throw (Exception) t;
384	>	else {
385	>	AssertionFailedError afe =
386	>	new AssertionFailedError(t.toString());
387	>	afe.initCause(t);
388	>	throw afe;
389	>	}
390	>	}
391	>
392	>	if (Thread.interrupted())
393	>	throw new AssertionFailedError("interrupt status set in main thread");
394	>
395	>	checkForkJoinPoolThreadLeaks();
396	>	}
397	>
398	>	/**
399	>	* Find missing try { ... } finally { joinPool(e); }
400		*/
401	<	public void tearDown() {
402	<	assertFalse(threadFailed);
401	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
402	>	Thread[] survivors = new Thread[5];
403	>	int count = Thread.enumerate(survivors);
404	>	for (int i = 0; i < count; i++) {
405	>	Thread thread = survivors[i];
406	>	String name = thread.getName();
407	>	if (name.startsWith("ForkJoinPool-")) {
408	>	// give thread some time to terminate
409	>	thread.join(LONG_DELAY_MS);
410	>	if (!thread.isAlive()) continue;
411	>	thread.stop();
412	>	throw new AssertionFailedError
413	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
414	>	toString(), name));
415	>	}
416	>	}
417		}
418
419	+	/**
420	+	* Just like fail(reason), but additionally recording (using
421	+	* threadRecordFailure) any AssertionFailedError thrown, so that
422	+	* the current testcase will fail.
423	+	*/
424		public void threadFail(String reason) {
425	<	threadFailed = true;
426	<	fail(reason);
425	>	try {
426	>	fail(reason);
427	>	} catch (AssertionFailedError t) {
428	>	threadRecordFailure(t);
429	>	fail(reason);
430	>	}
431		}
432
433	+	/**
434	+	* Just like assertTrue(b), but additionally recording (using
435	+	* threadRecordFailure) any AssertionFailedError thrown, so that
436	+	* the current testcase will fail.
437	+	*/
438		public void threadAssertTrue(boolean b) {
439	<	if (!b) {
108	<	threadFailed = true;
439	>	try {
440		assertTrue(b);
441	+	} catch (AssertionFailedError t) {
442	+	threadRecordFailure(t);
443	+	throw t;
444		}
445		}
446	+
447	+	/**
448	+	* Just like assertFalse(b), but additionally recording (using
449	+	* threadRecordFailure) any AssertionFailedError thrown, so that
450	+	* the current testcase will fail.
451	+	*/
452		public void threadAssertFalse(boolean b) {
453	<	if (b) {
114	<	threadFailed = true;
453	>	try {
454		assertFalse(b);
455	+	} catch (AssertionFailedError t) {
456	+	threadRecordFailure(t);
457	+	throw t;
458		}
459		}
460	+
461	+	/**
462	+	* Just like assertNull(x), but additionally recording (using
463	+	* threadRecordFailure) any AssertionFailedError thrown, so that
464	+	* the current testcase will fail.
465	+	*/
466		public void threadAssertNull(Object x) {
467	<	if (x != null) {
120	<	threadFailed = true;
467	>	try {
468		assertNull(x);
469	+	} catch (AssertionFailedError t) {
470	+	threadRecordFailure(t);
471	+	throw t;
472		}
473		}
474	+
475	+	/**
476	+	* Just like assertEquals(x, y), but additionally recording (using
477	+	* threadRecordFailure) any AssertionFailedError thrown, so that
478	+	* the current testcase will fail.
479	+	*/
480		public void threadAssertEquals(long x, long y) {
481	<	if (x != y) {
126	<	threadFailed = true;
481	>	try {
482		assertEquals(x, y);
483	+	} catch (AssertionFailedError t) {
484	+	threadRecordFailure(t);
485	+	throw t;
486		}
487		}
488	+
489	+	/**
490	+	* Just like assertEquals(x, y), but additionally recording (using
491	+	* threadRecordFailure) any AssertionFailedError thrown, so that
492	+	* the current testcase will fail.
493	+	*/
494		public void threadAssertEquals(Object x, Object y) {
495	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
495	>	try {
496		assertEquals(x, y);
497	+	} catch (AssertionFailedError t) {
498	+	threadRecordFailure(t);
499	+	throw t;
500	+	} catch (Throwable t) {
501	+	threadUnexpectedException(t);
502		}
503		}
504
505		/**
506	<	* Wait out termination of a thread pool or fail doing so
506	>	* Just like assertSame(x, y), but additionally recording (using
507	>	* threadRecordFailure) any AssertionFailedError thrown, so that
508	>	* the current testcase will fail.
509		*/
510	<	public void joinPool(ExecutorService exec) {
510	>	public void threadAssertSame(Object x, Object y) {
511	>	try {
512	>	assertSame(x, y);
513	>	} catch (AssertionFailedError t) {
514	>	threadRecordFailure(t);
515	>	throw t;
516	>	}
517	>	}
518	>
519	>	/**
520	>	* Calls threadFail with message "should throw exception".
521	>	*/
522	>	public void threadShouldThrow() {
523	>	threadFail("should throw exception");
524	>	}
525	>
526	>	/**
527	>	* Calls threadFail with message "should throw" + exceptionName.
528	>	*/
529	>	public void threadShouldThrow(String exceptionName) {
530	>	threadFail("should throw " + exceptionName);
531	>	}
532	>
533	>	/**
534	>	* Records the given exception using {@link #threadRecordFailure},
535	>	* then rethrows the exception, wrapping it in an
536	>	* AssertionFailedError if necessary.
537	>	*/
538	>	public void threadUnexpectedException(Throwable t) {
539	>	threadRecordFailure(t);
540	>	t.printStackTrace();
541	>	if (t instanceof RuntimeException)
542	>	throw (RuntimeException) t;
543	>	else if (t instanceof Error)
544	>	throw (Error) t;
545	>	else {
546	>	AssertionFailedError afe =
547	>	new AssertionFailedError("unexpected exception: " + t);
548	>	afe.initCause(t);
549	>	throw afe;
550	>	}
551	>	}
552	>
553	>	/**
554	>	* Delays, via Thread.sleep, for the given millisecond delay, but
555	>	* if the sleep is shorter than specified, may re-sleep or yield
556	>	* until time elapses.
557	>	*/
558	>	static void delay(long millis) throws InterruptedException {
559	>	long startTime = System.nanoTime();
560	>	long ns = millis * 1000 * 1000;
561	>	for (;;) {
562	>	if (millis > 0L)
563	>	Thread.sleep(millis);
564	>	else // too short to sleep
565	>	Thread.yield();
566	>	long d = ns - (System.nanoTime() - startTime);
567	>	if (d > 0L)
568	>	millis = d / (1000 * 1000);
569	>	else
570	>	break;
571	>	}
572	>	}
573	>
574	>	/**
575	>	* Waits out termination of a thread pool or fails doing so.
576	>	*/
577	>	void joinPool(ExecutorService exec) {
578		try {
579		exec.shutdown();
580	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
581	<	} catch(InterruptedException ie) {
582	<	fail("unexpected exception");
580	>	assertTrue("ExecutorService did not terminate in a timely manner",
581	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
582	>	} catch (SecurityException ok) {
583	>	// Allowed in case test doesn't have privs
584	>	} catch (InterruptedException ie) {
585	>	fail("Unexpected InterruptedException");
586		}
587		}
588
589	+	/**
590	+	* A debugging tool to print all stack traces, as jstack does.
591	+	*/
592	+	static void printAllStackTraces() {
593	+	for (ThreadInfo info :
594	+	ManagementFactory.getThreadMXBean()
595	+	.dumpAllThreads(true, true))
596	+	System.err.print(info);
597	+	}
598	+
599	+	/**
600	+	* Checks that thread does not terminate within the default
601	+	* millisecond delay of {@code timeoutMillis()}.
602	+	*/
603	+	void assertThreadStaysAlive(Thread thread) {
604	+	assertThreadStaysAlive(thread, timeoutMillis());
605	+	}
606
607	+	/**
608	+	* Checks that thread does not terminate within the given millisecond delay.
609	+	*/
610	+	void assertThreadStaysAlive(Thread thread, long millis) {
611	+	try {
612	+	// No need to optimize the failing case via Thread.join.
613	+	delay(millis);
614	+	assertTrue(thread.isAlive());
615	+	} catch (InterruptedException ie) {
616	+	fail("Unexpected InterruptedException");
617	+	}
618	+	}
619	+
620	+	/**
621	+	* Checks that the threads do not terminate within the default
622	+	* millisecond delay of {@code timeoutMillis()}.
623	+	*/
624	+	void assertThreadsStayAlive(Thread... threads) {
625	+	assertThreadsStayAlive(timeoutMillis(), threads);
626	+	}
627	+
628	+	/**
629	+	* Checks that the threads do not terminate within the given millisecond delay.
630	+	*/
631	+	void assertThreadsStayAlive(long millis, Thread... threads) {
632	+	try {
633	+	// No need to optimize the failing case via Thread.join.
634	+	delay(millis);
635	+	for (Thread thread : threads)
636	+	assertTrue(thread.isAlive());
637	+	} catch (InterruptedException ie) {
638	+	fail("Unexpected InterruptedException");
639	+	}
640	+	}
641	+
642	+	/**
643	+	* Checks that future.get times out, with the default timeout of
644	+	* {@code timeoutMillis()}.
645	+	*/
646	+	void assertFutureTimesOut(Future future) {
647	+	assertFutureTimesOut(future, timeoutMillis());
648	+	}
649	+
650	+	/**
651	+	* Checks that future.get times out, with the given millisecond timeout.
652	+	*/
653	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
654	+	long startTime = System.nanoTime();
655	+	try {
656	+	future.get(timeoutMillis, MILLISECONDS);
657	+	shouldThrow();
658	+	} catch (TimeoutException success) {
659	+	} catch (Exception e) {
660	+	threadUnexpectedException(e);
661	+	} finally { future.cancel(true); }
662	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
663	+	}
664	+
665	+	/**
666	+	* Fails with message "should throw exception".
667	+	*/
668	+	public void shouldThrow() {
669	+	fail("Should throw exception");
670	+	}
671	+
672	+	/**
673	+	* Fails with message "should throw " + exceptionName.
674	+	*/
675	+	public void shouldThrow(String exceptionName) {
676	+	fail("Should throw " + exceptionName);
677	+	}
678
679		/**
680		* The number of elements to place in collections, arrays, etc.
#	Line 155 | Line 683 | public class JSR166TestCase extends Test
683
684		// Some convenient Integer constants
685
686	<	public static final Integer zero = new Integer(0);
687	<	public static final Integer one = new Integer(1);
688	<	public static final Integer two = new Integer(2);
689	<	public static final Integer three  = new Integer(3);
686	>	public static final Integer zero  = new Integer(0);
687	>	public static final Integer one   = new Integer(1);
688	>	public static final Integer two   = new Integer(2);
689	>	public static final Integer three = new Integer(3);
690		public static final Integer four  = new Integer(4);
691		public static final Integer five  = new Integer(5);
692	<	public static final Integer six = new Integer(6);
692	>	public static final Integer six   = new Integer(6);
693		public static final Integer seven = new Integer(7);
694		public static final Integer eight = new Integer(8);
695	<	public static final Integer nine = new Integer(9);
695	>	public static final Integer nine  = new Integer(9);
696		public static final Integer m1  = new Integer(-1);
697		public static final Integer m2  = new Integer(-2);
698		public static final Integer m3  = new Integer(-3);
699	<	public static final Integer m4 = new Integer(-4);
700	<	public static final Integer m5 = new Integer(-5);
699	>	public static final Integer m4  = new Integer(-4);
700	>	public static final Integer m5  = new Integer(-5);
701	>	public static final Integer m6  = new Integer(-6);
702		public static final Integer m10 = new Integer(-10);
703
704
705	<	// Some convenient Runnable classes
705	>	/**
706	>	* Runs Runnable r with a security policy that permits precisely
707	>	* the specified permissions.  If there is no current security
708	>	* manager, the runnable is run twice, both with and without a
709	>	* security manager.  We require that any security manager permit
710	>	* getPolicy/setPolicy.
711	>	*/
712	>	public void runWithPermissions(Runnable r, Permission... permissions) {
713	>	SecurityManager sm = System.getSecurityManager();
714	>	if (sm == null) {
715	>	r.run();
716	>	}
717	>	runWithSecurityManagerWithPermissions(r, permissions);
718	>	}
719
720	<	public static class NoOpRunnable implements Runnable {
721	<	public void run() {}
720	>	/**
721	>	* Runs Runnable r with a security policy that permits precisely
722	>	* the specified permissions.  If there is no current security
723	>	* manager, a temporary one is set for the duration of the
724	>	* Runnable.  We require that any security manager permit
725	>	* getPolicy/setPolicy.
726	>	*/
727	>	public void runWithSecurityManagerWithPermissions(Runnable r,
728	>	Permission... permissions) {
729	>	SecurityManager sm = System.getSecurityManager();
730	>	if (sm == null) {
731	>	Policy savedPolicy = Policy.getPolicy();
732	>	try {
733	>	Policy.setPolicy(permissivePolicy());
734	>	System.setSecurityManager(new SecurityManager());
735	>	runWithSecurityManagerWithPermissions(r, permissions);
736	>	} finally {
737	>	System.setSecurityManager(null);
738	>	Policy.setPolicy(savedPolicy);
739	>	}
740	>	} else {
741	>	Policy savedPolicy = Policy.getPolicy();
742	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
743	>	Policy.setPolicy(policy);
744	>
745	>	try {
746	>	r.run();
747	>	} finally {
748	>	policy.addPermission(new SecurityPermission("setPolicy"));
749	>	Policy.setPolicy(savedPolicy);
750	>	}
751	>	}
752		}
753
754	<	public static class NoOpCallable implements Callable {
755	<	public Object call() { return Boolean.TRUE; }
754	>	/**
755	>	* Runs a runnable without any permissions.
756	>	*/
757	>	public void runWithoutPermissions(Runnable r) {
758	>	runWithPermissions(r);
759		}
760
761	<	public class ShortRunnable implements Runnable {
762	<	public void run() {
763	<	try {
764	<	Thread.sleep(SHORT_DELAY_MS);
761	>	/**
762	>	* A security policy where new permissions can be dynamically added
763	>	* or all cleared.
764	>	*/
765	>	public static class AdjustablePolicy extends java.security.Policy {
766	>	Permissions perms = new Permissions();
767	>	AdjustablePolicy(Permission... permissions) {
768	>	for (Permission permission : permissions)
769	>	perms.add(permission);
770	>	}
771	>	void addPermission(Permission perm) { perms.add(perm); }
772	>	void clearPermissions() { perms = new Permissions(); }
773	>	public PermissionCollection getPermissions(CodeSource cs) {
774	>	return perms;
775	>	}
776	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
777	>	return perms;
778	>	}
779	>	public boolean implies(ProtectionDomain pd, Permission p) {
780	>	return perms.implies(p);
781	>	}
782	>	public void refresh() {}
783	>	public String toString() {
784	>	List<Permission> ps = new ArrayList<Permission>();
785	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
786	>	ps.add(e.nextElement());
787	>	return "AdjustablePolicy with permissions " + ps;
788	>	}
789	>	}
790	>
791	>	/**
792	>	* Returns a policy containing all the permissions we ever need.
793	>	*/
794	>	public static Policy permissivePolicy() {
795	>	return new AdjustablePolicy
796	>	// Permissions j.u.c. needs directly
797	>	(new RuntimePermission("modifyThread"),
798	>	new RuntimePermission("getClassLoader"),
799	>	new RuntimePermission("setContextClassLoader"),
800	>	// Permissions needed to change permissions!
801	>	new SecurityPermission("getPolicy"),
802	>	new SecurityPermission("setPolicy"),
803	>	new RuntimePermission("setSecurityManager"),
804	>	// Permissions needed by the junit test harness
805	>	new RuntimePermission("accessDeclaredMembers"),
806	>	new PropertyPermission("*", "read"),
807	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
808	>	}
809	>
810	>	/**
811	>	* Sleeps until the given time has elapsed.
812	>	* Throws AssertionFailedError if interrupted.
813	>	*/
814	>	void sleep(long millis) {
815	>	try {
816	>	delay(millis);
817	>	} catch (InterruptedException ie) {
818	>	AssertionFailedError afe =
819	>	new AssertionFailedError("Unexpected InterruptedException");
820	>	afe.initCause(ie);
821	>	throw afe;
822	>	}
823	>	}
824	>
825	>	/**
826	>	* Spin-waits up to the specified number of milliseconds for the given
827	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
828	>	*/
829	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
830	>	long startTime = System.nanoTime();
831	>	for (;;) {
832	>	Thread.State s = thread.getState();
833	>	if (s == Thread.State.BLOCKED ||
834	>	s == Thread.State.WAITING ||
835	>	s == Thread.State.TIMED_WAITING)
836	>	return;
837	>	else if (s == Thread.State.TERMINATED)
838	>	fail("Unexpected thread termination");
839	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
840	>	threadAssertTrue(thread.isAlive());
841	>	return;
842		}
843	<	catch(Exception e) {
844	<	threadFail("unexpectedException");
843	>	Thread.yield();
844	>	}
845	>	}
846	>
847	>	/**
848	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
849	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
850	>	*/
851	>	void waitForThreadToEnterWaitState(Thread thread) {
852	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
853	>	}
854	>
855	>	/**
856	>	* Returns the number of milliseconds since time given by
857	>	* startNanoTime, which must have been previously returned from a
858	>	* call to {@link System.nanoTime()}.
859	>	*/
860	>	long millisElapsedSince(long startNanoTime) {
861	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
862	>	}
863	>
864	>	/**
865	>	* Returns a new started daemon Thread running the given runnable.
866	>	*/
867	>	Thread newStartedThread(Runnable runnable) {
868	>	Thread t = new Thread(runnable);
869	>	t.setDaemon(true);
870	>	t.start();
871	>	return t;
872	>	}
873	>
874	>	/**
875	>	* Waits for the specified time (in milliseconds) for the thread
876	>	* to terminate (using {@link Thread#join(long)}), else interrupts
877	>	* the thread (in the hope that it may terminate later) and fails.
878	>	*/
879	>	void awaitTermination(Thread t, long timeoutMillis) {
880	>	try {
881	>	t.join(timeoutMillis);
882	>	} catch (InterruptedException ie) {
883	>	threadUnexpectedException(ie);
884	>	} finally {
885	>	if (t.getState() != Thread.State.TERMINATED) {
886	>	t.interrupt();
887	>	fail("Test timed out");
888		}
889		}
890		}
891
892	<	public class ShortInterruptedRunnable implements Runnable {
893	<	public void run() {
892	>	/**
893	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
894	>	* terminate (using {@link Thread#join(long)}), else interrupts
895	>	* the thread (in the hope that it may terminate later) and fails.
896	>	*/
897	>	void awaitTermination(Thread t) {
898	>	awaitTermination(t, LONG_DELAY_MS);
899	>	}
900	>
901	>	// Some convenient Runnable classes
902	>
903	>	public abstract class CheckedRunnable implements Runnable {
904	>	protected abstract void realRun() throws Throwable;
905	>
906	>	public final void run() {
907		try {
908	<	Thread.sleep(SHORT_DELAY_MS);
909	<	threadFail("should throw IE");
908	>	realRun();
909	>	} catch (Throwable t) {
910	>	threadUnexpectedException(t);
911		}
912	<	catch(InterruptedException success) {
912	>	}
913	>	}
914	>
915	>	public abstract class RunnableShouldThrow implements Runnable {
916	>	protected abstract void realRun() throws Throwable;
917	>
918	>	final Class<?> exceptionClass;
919	>
920	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
921	>	this.exceptionClass = exceptionClass;
922	>	}
923	>
924	>	public final void run() {
925	>	try {
926	>	realRun();
927	>	threadShouldThrow(exceptionClass.getSimpleName());
928	>	} catch (Throwable t) {
929	>	if (! exceptionClass.isInstance(t))
930	>	threadUnexpectedException(t);
931		}
932		}
933		}
934
935	<	public class SmallRunnable implements Runnable {
936	<	public void run() {
935	>	public abstract class ThreadShouldThrow extends Thread {
936	>	protected abstract void realRun() throws Throwable;
937	>
938	>	final Class<?> exceptionClass;
939	>
940	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
941	>	this.exceptionClass = exceptionClass;
942	>	}
943	>
944	>	public final void run() {
945		try {
946	<	Thread.sleep(SMALL_DELAY_MS);
946	>	realRun();
947	>	threadShouldThrow(exceptionClass.getSimpleName());
948	>	} catch (Throwable t) {
949	>	if (! exceptionClass.isInstance(t))
950	>	threadUnexpectedException(t);
951		}
952	<	catch(Exception e) {
953	<	threadFail("unexpectedException");
952	>	}
953	>	}
954	>
955	>	public abstract class CheckedInterruptedRunnable implements Runnable {
956	>	protected abstract void realRun() throws Throwable;
957	>
958	>	public final void run() {
959	>	try {
960	>	realRun();
961	>	threadShouldThrow("InterruptedException");
962	>	} catch (InterruptedException success) {
963	>	threadAssertFalse(Thread.interrupted());
964	>	} catch (Throwable t) {
965	>	threadUnexpectedException(t);
966		}
967		}
968		}
969
970	<	public class SmallCallable implements Callable {
971	<	public Object call() {
970	>	public abstract class CheckedCallable<T> implements Callable<T> {
971	>	protected abstract T realCall() throws Throwable;
972	>
973	>	public final T call() {
974		try {
975	<	Thread.sleep(SMALL_DELAY_MS);
975	>	return realCall();
976	>	} catch (Throwable t) {
977	>	threadUnexpectedException(t);
978	>	return null;
979		}
980	<	catch(Exception e) {
981	<	threadFail("unexpectedException");
980	>	}
981	>	}
982	>
983	>	public abstract class CheckedInterruptedCallable<T>
984	>	implements Callable<T> {
985	>	protected abstract T realCall() throws Throwable;
986	>
987	>	public final T call() {
988	>	try {
989	>	T result = realCall();
990	>	threadShouldThrow("InterruptedException");
991	>	return result;
992	>	} catch (InterruptedException success) {
993	>	threadAssertFalse(Thread.interrupted());
994	>	} catch (Throwable t) {
995	>	threadUnexpectedException(t);
996		}
997	+	return null;
998	+	}
999	+	}
1000	+
1001	+	public static class NoOpRunnable implements Runnable {
1002	+	public void run() {}
1003	+	}
1004	+
1005	+	public static class NoOpCallable implements Callable {
1006	+	public Object call() { return Boolean.TRUE; }
1007	+	}
1008	+
1009	+	public static final String TEST_STRING = "a test string";
1010	+
1011	+	public static class StringTask implements Callable<String> {
1012	+	public String call() { return TEST_STRING; }
1013	+	}
1014	+
1015	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1016	+	return new CheckedCallable<String>() {
1017	+	protected String realCall() {
1018	+	try {
1019	+	latch.await();
1020	+	} catch (InterruptedException quittingTime) {}
1021	+	return TEST_STRING;
1022	+	}};
1023	+	}
1024	+
1025	+	public Runnable awaiter(final CountDownLatch latch) {
1026	+	return new CheckedRunnable() {
1027	+	public void realRun() throws InterruptedException {
1028	+	await(latch);
1029	+	}};
1030	+	}
1031	+
1032	+	public void await(CountDownLatch latch) {
1033	+	try {
1034	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1035	+	} catch (Throwable t) {
1036	+	threadUnexpectedException(t);
1037	+	}
1038	+	}
1039	+
1040	+	public void await(Semaphore semaphore) {
1041	+	try {
1042	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1043	+	} catch (Throwable t) {
1044	+	threadUnexpectedException(t);
1045	+	}
1046	+	}
1047	+
1048	+	//     /**
1049	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1050	+	//      */
1051	+	//     public void await(AtomicBoolean flag) {
1052	+	//         await(flag, LONG_DELAY_MS);
1053	+	//     }
1054	+
1055	+	//     /**
1056	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1057	+	//      */
1058	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1059	+	//         long startTime = System.nanoTime();
1060	+	//         while (!flag.get()) {
1061	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1062	+	//                 throw new AssertionFailedError("timed out");
1063	+	//             Thread.yield();
1064	+	//         }
1065	+	//     }
1066	+
1067	+	public static class NPETask implements Callable<String> {
1068	+	public String call() { throw new NullPointerException(); }
1069	+	}
1070	+
1071	+	public static class CallableOne implements Callable<Integer> {
1072	+	public Integer call() { return one; }
1073	+	}
1074	+
1075	+	public class ShortRunnable extends CheckedRunnable {
1076	+	protected void realRun() throws Throwable {
1077	+	delay(SHORT_DELAY_MS);
1078	+	}
1079	+	}
1080	+
1081	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1082	+	protected void realRun() throws InterruptedException {
1083	+	delay(SHORT_DELAY_MS);
1084	+	}
1085	+	}
1086	+
1087	+	public class SmallRunnable extends CheckedRunnable {
1088	+	protected void realRun() throws Throwable {
1089	+	delay(SMALL_DELAY_MS);
1090	+	}
1091	+	}
1092	+
1093	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1094	+	protected void realRun() {
1095	+	try {
1096	+	delay(SMALL_DELAY_MS);
1097	+	} catch (InterruptedException ok) {}
1098	+	}
1099	+	}
1100	+
1101	+	public class SmallCallable extends CheckedCallable {
1102	+	protected Object realCall() throws InterruptedException {
1103	+	delay(SMALL_DELAY_MS);
1104		return Boolean.TRUE;
1105		}
1106		}
1107
1108	<	public class SmallInterruptedRunnable implements Runnable {
1108	>	public class MediumRunnable extends CheckedRunnable {
1109	>	protected void realRun() throws Throwable {
1110	>	delay(MEDIUM_DELAY_MS);
1111	>	}
1112	>	}
1113	>
1114	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1115	>	protected void realRun() throws InterruptedException {
1116	>	delay(MEDIUM_DELAY_MS);
1117	>	}
1118	>	}
1119	>
1120	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1121	>	return new CheckedRunnable() {
1122	>	protected void realRun() {
1123	>	try {
1124	>	delay(timeoutMillis);
1125	>	} catch (InterruptedException ok) {}
1126	>	}};
1127	>	}
1128	>
1129	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1130	>	protected void realRun() {
1131	>	try {
1132	>	delay(MEDIUM_DELAY_MS);
1133	>	} catch (InterruptedException ok) {}
1134	>	}
1135	>	}
1136	>
1137	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1138	>	protected void realRun() {
1139	>	try {
1140	>	delay(LONG_DELAY_MS);
1141	>	} catch (InterruptedException ok) {}
1142	>	}
1143	>	}
1144	>
1145	>	/**
1146	>	* For use as ThreadFactory in constructors
1147	>	*/
1148	>	public static class SimpleThreadFactory implements ThreadFactory {
1149	>	public Thread newThread(Runnable r) {
1150	>	return new Thread(r);
1151	>	}
1152	>	}
1153	>
1154	>	public interface TrackedRunnable extends Runnable {
1155	>	boolean isDone();
1156	>	}
1157	>
1158	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1159	>	return new TrackedRunnable() {
1160	>	private volatile boolean done = false;
1161	>	public boolean isDone() { return done; }
1162	>	public void run() {
1163	>	try {
1164	>	delay(timeoutMillis);
1165	>	done = true;
1166	>	} catch (InterruptedException ok) {}
1167	>	}
1168	>	};
1169	>	}
1170	>
1171	>	public static class TrackedShortRunnable implements Runnable {
1172	>	public volatile boolean done = false;
1173		public void run() {
1174		try {
1175	<	Thread.sleep(SMALL_DELAY_MS);
1176	<	threadFail("should throw IE");
1177	<	}
237	<	catch(InterruptedException success) {
238	<	}
1175	>	delay(SHORT_DELAY_MS);
1176	>	done = true;
1177	>	} catch (InterruptedException ok) {}
1178		}
1179		}
1180
1181	+	public static class TrackedSmallRunnable implements Runnable {
1182	+	public volatile boolean done = false;
1183	+	public void run() {
1184	+	try {
1185	+	delay(SMALL_DELAY_MS);
1186	+	done = true;
1187	+	} catch (InterruptedException ok) {}
1188	+	}
1189	+	}
1190
1191	<	public class MediumRunnable implements Runnable {
1191	>	public static class TrackedMediumRunnable implements Runnable {
1192	>	public volatile boolean done = false;
1193		public void run() {
1194		try {
1195	<	Thread.sleep(MEDIUM_DELAY_MS);
1196	<	}
1197	<	catch(Exception e) {
249	<	threadFail("unexpectedException");
250	<	}
1195	>	delay(MEDIUM_DELAY_MS);
1196	>	done = true;
1197	>	} catch (InterruptedException ok) {}
1198		}
1199		}
1200
1201	<	public class MediumInterruptedRunnable implements Runnable {
1201	>	public static class TrackedLongRunnable implements Runnable {
1202	>	public volatile boolean done = false;
1203		public void run() {
1204		try {
1205	<	Thread.sleep(MEDIUM_DELAY_MS);
1206	<	threadFail("should throw IE");
1207	<	}
260	<	catch(InterruptedException success) {
261	<	}
1205	>	delay(LONG_DELAY_MS);
1206	>	done = true;
1207	>	} catch (InterruptedException ok) {}
1208		}
1209		}
1210
1211	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1211	>	public static class TrackedNoOpRunnable implements Runnable {
1212	>	public volatile boolean done = false;
1213		public void run() {
1214	+	done = true;
1215	+	}
1216	+	}
1217	+
1218	+	public static class TrackedCallable implements Callable {
1219	+	public volatile boolean done = false;
1220	+	public Object call() {
1221		try {
1222	<	Thread.sleep(MEDIUM_DELAY_MS);
1222	>	delay(SMALL_DELAY_MS);
1223	>	done = true;
1224	>	} catch (InterruptedException ok) {}
1225	>	return Boolean.TRUE;
1226	>	}
1227	>	}
1228	>
1229	>	/**
1230	>	* Analog of CheckedRunnable for RecursiveAction
1231	>	*/
1232	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1233	>	protected abstract void realCompute() throws Throwable;
1234	>
1235	>	public final void compute() {
1236	>	try {
1237	>	realCompute();
1238	>	} catch (Throwable t) {
1239	>	threadUnexpectedException(t);
1240		}
1241	<	catch(InterruptedException success) {
1241	>	}
1242	>	}
1243	>
1244	>	/**
1245	>	* Analog of CheckedCallable for RecursiveTask
1246	>	*/
1247	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1248	>	protected abstract T realCompute() throws Throwable;
1249	>
1250	>	public final T compute() {
1251	>	try {
1252	>	return realCompute();
1253	>	} catch (Throwable t) {
1254	>	threadUnexpectedException(t);
1255	>	return null;
1256	>	}
1257	>	}
1258	>	}
1259	>
1260	>	/**
1261	>	* For use as RejectedExecutionHandler in constructors
1262	>	*/
1263	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1264	>	public void rejectedExecution(Runnable r,
1265	>	ThreadPoolExecutor executor) {}
1266	>	}
1267	>
1268	>	/**
1269	>	* A CyclicBarrier that uses timed await and fails with
1270	>	* AssertionFailedErrors instead of throwing checked exceptions.
1271	>	*/
1272	>	public class CheckedBarrier extends CyclicBarrier {
1273	>	public CheckedBarrier(int parties) { super(parties); }
1274	>
1275	>	public int await() {
1276	>	try {
1277	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1278	>	} catch (TimeoutException e) {
1279	>	throw new AssertionFailedError("timed out");
1280	>	} catch (Exception e) {
1281	>	AssertionFailedError afe =
1282	>	new AssertionFailedError("Unexpected exception: " + e);
1283	>	afe.initCause(e);
1284	>	throw afe;
1285		}
1286		}
1287		}
1288	<
1288	>
1289	>	void checkEmpty(BlockingQueue q) {
1290	>	try {
1291	>	assertTrue(q.isEmpty());
1292	>	assertEquals(0, q.size());
1293	>	assertNull(q.peek());
1294	>	assertNull(q.poll());
1295	>	assertNull(q.poll(0, MILLISECONDS));
1296	>	assertEquals(q.toString(), "[]");
1297	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1298	>	assertFalse(q.iterator().hasNext());
1299	>	try {
1300	>	q.element();
1301	>	shouldThrow();
1302	>	} catch (NoSuchElementException success) {}
1303	>	try {
1304	>	q.iterator().next();
1305	>	shouldThrow();
1306	>	} catch (NoSuchElementException success) {}
1307	>	try {
1308	>	q.remove();
1309	>	shouldThrow();
1310	>	} catch (NoSuchElementException success) {}
1311	>	} catch (InterruptedException ie) {
1312	>	threadUnexpectedException(ie);
1313	>	}
1314	>	}
1315	>
1316	>	void assertSerialEquals(Object x, Object y) {
1317	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1318	>	}
1319	>
1320	>	void assertNotSerialEquals(Object x, Object y) {
1321	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1322	>	}
1323	>
1324	>	byte[] serialBytes(Object o) {
1325	>	try {
1326	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1327	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1328	>	oos.writeObject(o);
1329	>	oos.flush();
1330	>	oos.close();
1331	>	return bos.toByteArray();
1332	>	} catch (Throwable t) {
1333	>	threadUnexpectedException(t);
1334	>	return new byte[0];
1335	>	}
1336	>	}
1337	>
1338	>	@SuppressWarnings("unchecked")
1339	>	<T> T serialClone(T o) {
1340	>	try {
1341	>	ObjectInputStream ois = new ObjectInputStream
1342	>	(new ByteArrayInputStream(serialBytes(o)));
1343	>	T clone = (T) ois.readObject();
1344	>	assertSame(o.getClass(), clone.getClass());
1345	>	return clone;
1346	>	} catch (Throwable t) {
1347	>	threadUnexpectedException(t);
1348	>	return null;
1349	>	}
1350	>	}
1351		}

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