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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.3 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.97 by jsr166, Fri Feb 1 19:07:36 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	+	static void addTestReflectively(TestSuite suite, String testClassName) {
186	+	try {
187	+	Class klazz = Class.forName(testClassName);
188	+	Method m = klazz.getDeclaredMethod("suite", new Class<?>[0]);
189	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
190	+	} catch (Exception e) {
191	+	throw new Error(e);
192	+	}
193	+	}
194	+
195	+	public static final double JAVA_CLASS_VERSION;
196	+	static {
197	+	try {
198	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
199	+	new java.security.PrivilegedAction<Double>() {
200	+	public Double run() {
201	+	return Double.valueOf(System.getProperty("java.class.version"));}});
202	+	} catch (Throwable t) {
203	+	throw new Error(t);
204	+	}
205	+	}
206	+
207	+	public static boolean isAtLeastJdk6() { return JAVA_CLASS_VERSION >= 50.0; }
208	+	public static boolean isAtLeastJdk7() { return JAVA_CLASS_VERSION >= 51.0; }
209	+	public static boolean isAtLeastJdk8() { return JAVA_CLASS_VERSION >= 52.0; }
210	+
211	+	/**
212	+	* Collects all JSR166 unit tests as one suite.
213	+	*/
214	+	public static Test suite() {
215	+	TestSuite suite = newTestSuite(
216	+	ForkJoinPoolTest.suite(),
217	+	ForkJoinTaskTest.suite(),
218	+	RecursiveActionTest.suite(),
219	+	RecursiveTaskTest.suite(),
220	+	LinkedTransferQueueTest.suite(),
221	+	PhaserTest.suite(),
222	+	ThreadLocalRandomTest.suite(),
223	+	AbstractExecutorServiceTest.suite(),
224	+	AbstractQueueTest.suite(),
225	+	AbstractQueuedSynchronizerTest.suite(),
226	+	AbstractQueuedLongSynchronizerTest.suite(),
227	+	ArrayBlockingQueueTest.suite(),
228	+	ArrayDequeTest.suite(),
229	+	AtomicBooleanTest.suite(),
230	+	AtomicIntegerArrayTest.suite(),
231	+	AtomicIntegerFieldUpdaterTest.suite(),
232	+	AtomicIntegerTest.suite(),
233	+	AtomicLongArrayTest.suite(),
234	+	AtomicLongFieldUpdaterTest.suite(),
235	+	AtomicLongTest.suite(),
236	+	AtomicMarkableReferenceTest.suite(),
237	+	AtomicReferenceArrayTest.suite(),
238	+	AtomicReferenceFieldUpdaterTest.suite(),
239	+	AtomicReferenceTest.suite(),
240	+	AtomicStampedReferenceTest.suite(),
241	+	ConcurrentHashMapTest.suite(),
242	+	ConcurrentLinkedDequeTest.suite(),
243	+	ConcurrentLinkedQueueTest.suite(),
244	+	ConcurrentSkipListMapTest.suite(),
245	+	ConcurrentSkipListSubMapTest.suite(),
246	+	ConcurrentSkipListSetTest.suite(),
247	+	ConcurrentSkipListSubSetTest.suite(),
248	+	CopyOnWriteArrayListTest.suite(),
249	+	CopyOnWriteArraySetTest.suite(),
250	+	CountDownLatchTest.suite(),
251	+	CyclicBarrierTest.suite(),
252	+	DelayQueueTest.suite(),
253	+	EntryTest.suite(),
254	+	ExchangerTest.suite(),
255	+	ExecutorsTest.suite(),
256	+	ExecutorCompletionServiceTest.suite(),
257	+	FutureTaskTest.suite(),
258	+	LinkedBlockingDequeTest.suite(),
259	+	LinkedBlockingQueueTest.suite(),
260	+	LinkedListTest.suite(),
261	+	LockSupportTest.suite(),
262	+	PriorityBlockingQueueTest.suite(),
263	+	PriorityQueueTest.suite(),
264	+	ReentrantLockTest.suite(),
265	+	ReentrantReadWriteLockTest.suite(),
266	+	ScheduledExecutorTest.suite(),
267	+	ScheduledExecutorSubclassTest.suite(),
268	+	SemaphoreTest.suite(),
269	+	SynchronousQueueTest.suite(),
270	+	SystemTest.suite(),
271	+	ThreadLocalTest.suite(),
272	+	ThreadPoolExecutorTest.suite(),
273	+	ThreadPoolExecutorSubclassTest.suite(),
274	+	ThreadTest.suite(),
275	+	TimeUnitTest.suite(),
276	+	TreeMapTest.suite(),
277	+	TreeSetTest.suite(),
278	+	TreeSubMapTest.suite(),
279	+	TreeSubSetTest.suite());
280	+	if (isAtLeastJdk8()) {
281	+	addTestReflectively(suite, "StampedLockTest");
282	+	}
283	+	return suite;
284	+	}
285	+
286
287		public static long SHORT_DELAY_MS;
288		public static long SMALL_DELAY_MS;
#	Line 60 | Line 291 | public class JSR166TestCase extends Test
291
292
293		/**
294	<	* Return the shortest timed delay. This could
295	<	* be reimplmented to use for example a Property.
296	<	*/
294	>	* Returns the shortest timed delay. This could
295	>	* be reimplemented to use for example a Property.
296	>	*/
297		protected long getShortDelay() {
298		return 50;
299		}
300
70	–
301		/**
302	<	* Set delays as multiples fo SHORT_DELAY.
302	>	* Sets delays as multiples of SHORT_DELAY.
303		*/
304	<	protected  void setDelays() {
304	>	protected void setDelays() {
305		SHORT_DELAY_MS = getShortDelay();
306	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
306	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
307		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
308	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
308	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
309	>	}
310	>
311	>	/**
312	>	* Returns a timeout in milliseconds to be used in tests that
313	>	* verify that operations block or time out.
314	>	*/
315	>	long timeoutMillis() {
316	>	return SHORT_DELAY_MS / 4;
317	>	}
318	>
319	>	/**
320	>	* Returns a new Date instance representing a time delayMillis
321	>	* milliseconds in the future.
322	>	*/
323	>	Date delayedDate(long delayMillis) {
324	>	return new Date(System.currentTimeMillis() + delayMillis);
325		}
326
327		/**
328	<	* Flag set true if any threadAssert methods fail
328	>	* The first exception encountered if any threadAssertXXX method fails.
329		*/
330	<	protected volatile boolean threadFailed;
330	>	private final AtomicReference<Throwable> threadFailure
331	>	= new AtomicReference<Throwable>(null);
332
333		/**
334	<	* Initialize test to indicat that no thread assertions have failed
334	>	* Records an exception so that it can be rethrown later in the test
335	>	* harness thread, triggering a test case failure.  Only the first
336	>	* failure is recorded; subsequent calls to this method from within
337	>	* the same test have no effect.
338		*/
339	<	public void setUp() {
339	>	public void threadRecordFailure(Throwable t) {
340	>	threadFailure.compareAndSet(null, t);
341	>	}
342	>
343	>	public void setUp() {
344		setDelays();
91	–	threadFailed = false;
345		}
346
347		/**
348	<	* Trigger test case failure if any thread assertions have failed
348	>	* Extra checks that get done for all test cases.
349	>	*
350	>	* Triggers test case failure if any thread assertions have failed,
351	>	* by rethrowing, in the test harness thread, any exception recorded
352	>	* earlier by threadRecordFailure.
353	>	*
354	>	* Triggers test case failure if interrupt status is set in the main thread.
355		*/
356	<	public void tearDown() {
357	<	assertFalse(threadFailed);
356	>	public void tearDown() throws Exception {
357	>	Throwable t = threadFailure.getAndSet(null);
358	>	if (t != null) {
359	>	if (t instanceof Error)
360	>	throw (Error) t;
361	>	else if (t instanceof RuntimeException)
362	>	throw (RuntimeException) t;
363	>	else if (t instanceof Exception)
364	>	throw (Exception) t;
365	>	else {
366	>	AssertionFailedError afe =
367	>	new AssertionFailedError(t.toString());
368	>	afe.initCause(t);
369	>	throw afe;
370	>	}
371	>	}
372	>
373	>	if (Thread.interrupted())
374	>	throw new AssertionFailedError("interrupt status set in main thread");
375		}
376
377	+	/**
378	+	* Just like fail(reason), but additionally recording (using
379	+	* threadRecordFailure) any AssertionFailedError thrown, so that
380	+	* the current testcase will fail.
381	+	*/
382		public void threadFail(String reason) {
383	<	threadFailed = true;
384	<	fail(reason);
383	>	try {
384	>	fail(reason);
385	>	} catch (AssertionFailedError t) {
386	>	threadRecordFailure(t);
387	>	fail(reason);
388	>	}
389		}
390
391	+	/**
392	+	* Just like assertTrue(b), but additionally recording (using
393	+	* threadRecordFailure) any AssertionFailedError thrown, so that
394	+	* the current testcase will fail.
395	+	*/
396		public void threadAssertTrue(boolean b) {
397	<	if (!b) {
108	<	threadFailed = true;
397	>	try {
398		assertTrue(b);
399	+	} catch (AssertionFailedError t) {
400	+	threadRecordFailure(t);
401	+	throw t;
402		}
403		}
404	+
405	+	/**
406	+	* Just like assertFalse(b), but additionally recording (using
407	+	* threadRecordFailure) any AssertionFailedError thrown, so that
408	+	* the current testcase will fail.
409	+	*/
410		public void threadAssertFalse(boolean b) {
411	<	if (b) {
114	<	threadFailed = true;
411	>	try {
412		assertFalse(b);
413	+	} catch (AssertionFailedError t) {
414	+	threadRecordFailure(t);
415	+	throw t;
416		}
417		}
418	+
419	+	/**
420	+	* Just like assertNull(x), but additionally recording (using
421	+	* threadRecordFailure) any AssertionFailedError thrown, so that
422	+	* the current testcase will fail.
423	+	*/
424		public void threadAssertNull(Object x) {
425	<	if (x != null) {
120	<	threadFailed = true;
425	>	try {
426		assertNull(x);
427	+	} catch (AssertionFailedError t) {
428	+	threadRecordFailure(t);
429	+	throw t;
430		}
431		}
432	+
433	+	/**
434	+	* Just like assertEquals(x, y), but additionally recording (using
435	+	* threadRecordFailure) any AssertionFailedError thrown, so that
436	+	* the current testcase will fail.
437	+	*/
438		public void threadAssertEquals(long x, long y) {
439	<	if (x != y) {
126	<	threadFailed = true;
439	>	try {
440		assertEquals(x, y);
441	+	} catch (AssertionFailedError t) {
442	+	threadRecordFailure(t);
443	+	throw t;
444		}
445		}
446	+
447	+	/**
448	+	* Just like assertEquals(x, y), but additionally recording (using
449	+	* threadRecordFailure) any AssertionFailedError thrown, so that
450	+	* the current testcase will fail.
451	+	*/
452		public void threadAssertEquals(Object x, Object y) {
453	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
453	>	try {
454		assertEquals(x, y);
455	+	} catch (AssertionFailedError t) {
456	+	threadRecordFailure(t);
457	+	throw t;
458	+	} catch (Throwable t) {
459	+	threadUnexpectedException(t);
460	+	}
461	+	}
462	+
463	+	/**
464	+	* Just like assertSame(x, y), but additionally recording (using
465	+	* threadRecordFailure) any AssertionFailedError thrown, so that
466	+	* the current testcase will fail.
467	+	*/
468	+	public void threadAssertSame(Object x, Object y) {
469	+	try {
470	+	assertSame(x, y);
471	+	} catch (AssertionFailedError t) {
472	+	threadRecordFailure(t);
473	+	throw t;
474		}
475		}
476
477	+	/**
478	+	* Calls threadFail with message "should throw exception".
479	+	*/
480		public void threadShouldThrow() {
481	<	threadFailed = true;
139	<	fail("should throw exception");
481	>	threadFail("should throw exception");
482		}
483
484	<	public void threadUnexpectedException() {
485	<	threadFailed = true;
486	<	fail("Unexpected exception");
484	>	/**
485	>	* Calls threadFail with message "should throw" + exceptionName.
486	>	*/
487	>	public void threadShouldThrow(String exceptionName) {
488	>	threadFail("should throw " + exceptionName);
489		}
490
491	+	/**
492	+	* Records the given exception using {@link #threadRecordFailure},
493	+	* then rethrows the exception, wrapping it in an
494	+	* AssertionFailedError if necessary.
495	+	*/
496	+	public void threadUnexpectedException(Throwable t) {
497	+	threadRecordFailure(t);
498	+	t.printStackTrace();
499	+	if (t instanceof RuntimeException)
500	+	throw (RuntimeException) t;
501	+	else if (t instanceof Error)
502	+	throw (Error) t;
503	+	else {
504	+	AssertionFailedError afe =
505	+	new AssertionFailedError("unexpected exception: " + t);
506	+	afe.initCause(t);
507	+	throw afe;
508	+	}
509	+	}
510
511		/**
512	<	* Wait out termination of a thread pool or fail doing so
512	>	* Delays, via Thread.sleep, for the given millisecond delay, but
513	>	* if the sleep is shorter than specified, may re-sleep or yield
514	>	* until time elapses.
515		*/
516	<	public void joinPool(ExecutorService exec) {
516	>	static void delay(long millis) throws InterruptedException {
517	>	long startTime = System.nanoTime();
518	>	long ns = millis * 1000 * 1000;
519	>	for (;;) {
520	>	if (millis > 0L)
521	>	Thread.sleep(millis);
522	>	else // too short to sleep
523	>	Thread.yield();
524	>	long d = ns - (System.nanoTime() - startTime);
525	>	if (d > 0L)
526	>	millis = d / (1000 * 1000);
527	>	else
528	>	break;
529	>	}
530	>	}
531	>
532	>	/**
533	>	* Waits out termination of a thread pool or fails doing so.
534	>	*/
535	>	void joinPool(ExecutorService exec) {
536		try {
537		exec.shutdown();
538	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
539	<	} catch(InterruptedException ie) {
540	<	fail("Unexpected exception");
538	>	assertTrue("ExecutorService did not terminate in a timely manner",
539	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
540	>	} catch (SecurityException ok) {
541	>	// Allowed in case test doesn't have privs
542	>	} catch (InterruptedException ie) {
543	>	fail("Unexpected InterruptedException");
544		}
545		}
546
547	<
547	>	/**
548	>	* A debugging tool to print all stack traces, as jstack does.
549	>	*/
550	>	static void printAllStackTraces() {
551	>	for (ThreadInfo info :
552	>	ManagementFactory.getThreadMXBean()
553	>	.dumpAllThreads(true, true))
554	>	System.err.print(info);
555	>	}
556	>
557	>	/**
558	>	* Checks that thread does not terminate within the default
559	>	* millisecond delay of {@code timeoutMillis()}.
560	>	*/
561	>	void assertThreadStaysAlive(Thread thread) {
562	>	assertThreadStaysAlive(thread, timeoutMillis());
563	>	}
564	>
565	>	/**
566	>	* Checks that thread does not terminate within the given millisecond delay.
567	>	*/
568	>	void assertThreadStaysAlive(Thread thread, long millis) {
569	>	try {
570	>	// No need to optimize the failing case via Thread.join.
571	>	delay(millis);
572	>	assertTrue(thread.isAlive());
573	>	} catch (InterruptedException ie) {
574	>	fail("Unexpected InterruptedException");
575	>	}
576	>	}
577	>
578	>	/**
579	>	* Checks that the threads do not terminate within the default
580	>	* millisecond delay of {@code timeoutMillis()}.
581	>	*/
582	>	void assertThreadsStayAlive(Thread... threads) {
583	>	assertThreadsStayAlive(timeoutMillis(), threads);
584	>	}
585	>
586	>	/**
587	>	* Checks that the threads do not terminate within the given millisecond delay.
588	>	*/
589	>	void assertThreadsStayAlive(long millis, Thread... threads) {
590	>	try {
591	>	// No need to optimize the failing case via Thread.join.
592	>	delay(millis);
593	>	for (Thread thread : threads)
594	>	assertTrue(thread.isAlive());
595	>	} catch (InterruptedException ie) {
596	>	fail("Unexpected InterruptedException");
597	>	}
598	>	}
599	>
600	>	/**
601	>	* Checks that future.get times out, with the default timeout of
602	>	* {@code timeoutMillis()}.
603	>	*/
604	>	void assertFutureTimesOut(Future future) {
605	>	assertFutureTimesOut(future, timeoutMillis());
606	>	}
607	>
608	>	/**
609	>	* Checks that future.get times out, with the given millisecond timeout.
610	>	*/
611	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
612	>	long startTime = System.nanoTime();
613	>	try {
614	>	future.get(timeoutMillis, MILLISECONDS);
615	>	shouldThrow();
616	>	} catch (TimeoutException success) {
617	>	} catch (Exception e) {
618	>	threadUnexpectedException(e);
619	>	} finally { future.cancel(true); }
620	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
621	>	}
622	>
623	>	/**
624	>	* Fails with message "should throw exception".
625	>	*/
626		public void shouldThrow() {
627		fail("Should throw exception");
628		}
629
630	<	public void unexpectedException() {
631	<	fail("Unexpected exception");
630	>	/**
631	>	* Fails with message "should throw " + exceptionName.
632	>	*/
633	>	public void shouldThrow(String exceptionName) {
634	>	fail("Should throw " + exceptionName);
635		}
636
169	–
637		/**
638		* The number of elements to place in collections, arrays, etc.
639		*/
#	Line 174 | Line 641 | public class JSR166TestCase extends Test
641
642		// Some convenient Integer constants
643
644	<	public static final Integer zero = new Integer(0);
645	<	public static final Integer one = new Integer(1);
646	<	public static final Integer two = new Integer(2);
647	<	public static final Integer three  = new Integer(3);
644	>	public static final Integer zero  = new Integer(0);
645	>	public static final Integer one   = new Integer(1);
646	>	public static final Integer two   = new Integer(2);
647	>	public static final Integer three = new Integer(3);
648		public static final Integer four  = new Integer(4);
649		public static final Integer five  = new Integer(5);
650	<	public static final Integer six = new Integer(6);
650	>	public static final Integer six   = new Integer(6);
651		public static final Integer seven = new Integer(7);
652		public static final Integer eight = new Integer(8);
653	<	public static final Integer nine = new Integer(9);
653	>	public static final Integer nine  = new Integer(9);
654		public static final Integer m1  = new Integer(-1);
655		public static final Integer m2  = new Integer(-2);
656		public static final Integer m3  = new Integer(-3);
657	<	public static final Integer m4 = new Integer(-4);
658	<	public static final Integer m5 = new Integer(-5);
657	>	public static final Integer m4  = new Integer(-4);
658	>	public static final Integer m5  = new Integer(-5);
659	>	public static final Integer m6  = new Integer(-6);
660		public static final Integer m10 = new Integer(-10);
661
662
663	<	// Some convenient Runnable classes
663	>	/**
664	>	* Runs Runnable r with a security policy that permits precisely
665	>	* the specified permissions.  If there is no current security
666	>	* manager, the runnable is run twice, both with and without a
667	>	* security manager.  We require that any security manager permit
668	>	* getPolicy/setPolicy.
669	>	*/
670	>	public void runWithPermissions(Runnable r, Permission... permissions) {
671	>	SecurityManager sm = System.getSecurityManager();
672	>	if (sm == null) {
673	>	r.run();
674	>	}
675	>	runWithSecurityManagerWithPermissions(r, permissions);
676	>	}
677
678	<	public static class NoOpRunnable implements Runnable {
679	<	public void run() {}
678	>	/**
679	>	* Runs Runnable r with a security policy that permits precisely
680	>	* the specified permissions.  If there is no current security
681	>	* manager, a temporary one is set for the duration of the
682	>	* Runnable.  We require that any security manager permit
683	>	* getPolicy/setPolicy.
684	>	*/
685	>	public void runWithSecurityManagerWithPermissions(Runnable r,
686	>	Permission... permissions) {
687	>	SecurityManager sm = System.getSecurityManager();
688	>	if (sm == null) {
689	>	Policy savedPolicy = Policy.getPolicy();
690	>	try {
691	>	Policy.setPolicy(permissivePolicy());
692	>	System.setSecurityManager(new SecurityManager());
693	>	runWithSecurityManagerWithPermissions(r, permissions);
694	>	} finally {
695	>	System.setSecurityManager(null);
696	>	Policy.setPolicy(savedPolicy);
697	>	}
698	>	} else {
699	>	Policy savedPolicy = Policy.getPolicy();
700	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
701	>	Policy.setPolicy(policy);
702	>
703	>	try {
704	>	r.run();
705	>	} finally {
706	>	policy.addPermission(new SecurityPermission("setPolicy"));
707	>	Policy.setPolicy(savedPolicy);
708	>	}
709	>	}
710		}
711
712	<	public static class NoOpCallable implements Callable {
713	<	public Object call() { return Boolean.TRUE; }
712	>	/**
713	>	* Runs a runnable without any permissions.
714	>	*/
715	>	public void runWithoutPermissions(Runnable r) {
716	>	runWithPermissions(r);
717		}
718
719	<	public class ShortRunnable implements Runnable {
720	<	public void run() {
721	<	try {
722	<	Thread.sleep(SHORT_DELAY_MS);
719	>	/**
720	>	* A security policy where new permissions can be dynamically added
721	>	* or all cleared.
722	>	*/
723	>	public static class AdjustablePolicy extends java.security.Policy {
724	>	Permissions perms = new Permissions();
725	>	AdjustablePolicy(Permission... permissions) {
726	>	for (Permission permission : permissions)
727	>	perms.add(permission);
728	>	}
729	>	void addPermission(Permission perm) { perms.add(perm); }
730	>	void clearPermissions() { perms = new Permissions(); }
731	>	public PermissionCollection getPermissions(CodeSource cs) {
732	>	return perms;
733	>	}
734	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
735	>	return perms;
736	>	}
737	>	public boolean implies(ProtectionDomain pd, Permission p) {
738	>	return perms.implies(p);
739	>	}
740	>	public void refresh() {}
741	>	public String toString() {
742	>	List<Permission> ps = new ArrayList<Permission>();
743	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
744	>	ps.add(e.nextElement());
745	>	return "AdjustablePolicy with permissions " + ps;
746	>	}
747	>	}
748	>
749	>	/**
750	>	* Returns a policy containing all the permissions we ever need.
751	>	*/
752	>	public static Policy permissivePolicy() {
753	>	return new AdjustablePolicy
754	>	// Permissions j.u.c. needs directly
755	>	(new RuntimePermission("modifyThread"),
756	>	new RuntimePermission("getClassLoader"),
757	>	new RuntimePermission("setContextClassLoader"),
758	>	// Permissions needed to change permissions!
759	>	new SecurityPermission("getPolicy"),
760	>	new SecurityPermission("setPolicy"),
761	>	new RuntimePermission("setSecurityManager"),
762	>	// Permissions needed by the junit test harness
763	>	new RuntimePermission("accessDeclaredMembers"),
764	>	new PropertyPermission("*", "read"),
765	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
766	>	}
767	>
768	>	/**
769	>	* Sleeps until the given time has elapsed.
770	>	* Throws AssertionFailedError if interrupted.
771	>	*/
772	>	void sleep(long millis) {
773	>	try {
774	>	delay(millis);
775	>	} catch (InterruptedException ie) {
776	>	AssertionFailedError afe =
777	>	new AssertionFailedError("Unexpected InterruptedException");
778	>	afe.initCause(ie);
779	>	throw afe;
780	>	}
781	>	}
782	>
783	>	/**
784	>	* Spin-waits up to the specified number of milliseconds for the given
785	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
786	>	*/
787	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
788	>	long startTime = System.nanoTime();
789	>	for (;;) {
790	>	Thread.State s = thread.getState();
791	>	if (s == Thread.State.BLOCKED ||
792	>	s == Thread.State.WAITING ||
793	>	s == Thread.State.TIMED_WAITING)
794	>	return;
795	>	else if (s == Thread.State.TERMINATED)
796	>	fail("Unexpected thread termination");
797	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
798	>	threadAssertTrue(thread.isAlive());
799	>	return;
800		}
801	<	catch(Exception e) {
802	<	threadUnexpectedException();
801	>	Thread.yield();
802	>	}
803	>	}
804	>
805	>	/**
806	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
807	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
808	>	*/
809	>	void waitForThreadToEnterWaitState(Thread thread) {
810	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
811	>	}
812	>
813	>	/**
814	>	* Returns the number of milliseconds since time given by
815	>	* startNanoTime, which must have been previously returned from a
816	>	* call to {@link System.nanoTime()}.
817	>	*/
818	>	long millisElapsedSince(long startNanoTime) {
819	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
820	>	}
821	>
822	>	/**
823	>	* Returns a new started daemon Thread running the given runnable.
824	>	*/
825	>	Thread newStartedThread(Runnable runnable) {
826	>	Thread t = new Thread(runnable);
827	>	t.setDaemon(true);
828	>	t.start();
829	>	return t;
830	>	}
831	>
832	>	/**
833	>	* Waits for the specified time (in milliseconds) for the thread
834	>	* to terminate (using {@link Thread#join(long)}), else interrupts
835	>	* the thread (in the hope that it may terminate later) and fails.
836	>	*/
837	>	void awaitTermination(Thread t, long timeoutMillis) {
838	>	try {
839	>	t.join(timeoutMillis);
840	>	} catch (InterruptedException ie) {
841	>	threadUnexpectedException(ie);
842	>	} finally {
843	>	if (t.getState() != Thread.State.TERMINATED) {
844	>	t.interrupt();
845	>	fail("Test timed out");
846		}
847		}
848		}
849
850	<	public class ShortInterruptedRunnable implements Runnable {
851	<	public void run() {
850	>	/**
851	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
852	>	* terminate (using {@link Thread#join(long)}), else interrupts
853	>	* the thread (in the hope that it may terminate later) and fails.
854	>	*/
855	>	void awaitTermination(Thread t) {
856	>	awaitTermination(t, LONG_DELAY_MS);
857	>	}
858	>
859	>	// Some convenient Runnable classes
860	>
861	>	public abstract class CheckedRunnable implements Runnable {
862	>	protected abstract void realRun() throws Throwable;
863	>
864	>	public final void run() {
865		try {
866	<	Thread.sleep(SHORT_DELAY_MS);
867	<	threadShouldThrow();
866	>	realRun();
867	>	} catch (Throwable t) {
868	>	threadUnexpectedException(t);
869		}
870	<	catch(InterruptedException success) {
870	>	}
871	>	}
872	>
873	>	public abstract class RunnableShouldThrow implements Runnable {
874	>	protected abstract void realRun() throws Throwable;
875	>
876	>	final Class<?> exceptionClass;
877	>
878	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
879	>	this.exceptionClass = exceptionClass;
880	>	}
881	>
882	>	public final void run() {
883	>	try {
884	>	realRun();
885	>	threadShouldThrow(exceptionClass.getSimpleName());
886	>	} catch (Throwable t) {
887	>	if (! exceptionClass.isInstance(t))
888	>	threadUnexpectedException(t);
889		}
890		}
891		}
892
893	<	public class SmallRunnable implements Runnable {
894	<	public void run() {
893	>	public abstract class ThreadShouldThrow extends Thread {
894	>	protected abstract void realRun() throws Throwable;
895	>
896	>	final Class<?> exceptionClass;
897	>
898	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
899	>	this.exceptionClass = exceptionClass;
900	>	}
901	>
902	>	public final void run() {
903		try {
904	<	Thread.sleep(SMALL_DELAY_MS);
904	>	realRun();
905	>	threadShouldThrow(exceptionClass.getSimpleName());
906	>	} catch (Throwable t) {
907	>	if (! exceptionClass.isInstance(t))
908	>	threadUnexpectedException(t);
909		}
910	<	catch(Exception e) {
911	<	threadUnexpectedException();
910	>	}
911	>	}
912	>
913	>	public abstract class CheckedInterruptedRunnable implements Runnable {
914	>	protected abstract void realRun() throws Throwable;
915	>
916	>	public final void run() {
917	>	try {
918	>	realRun();
919	>	threadShouldThrow("InterruptedException");
920	>	} catch (InterruptedException success) {
921	>	threadAssertFalse(Thread.interrupted());
922	>	} catch (Throwable t) {
923	>	threadUnexpectedException(t);
924		}
925		}
926		}
927
928	<	public class SmallCallable implements Callable {
929	<	public Object call() {
928	>	public abstract class CheckedCallable<T> implements Callable<T> {
929	>	protected abstract T realCall() throws Throwable;
930	>
931	>	public final T call() {
932		try {
933	<	Thread.sleep(SMALL_DELAY_MS);
933	>	return realCall();
934	>	} catch (Throwable t) {
935	>	threadUnexpectedException(t);
936	>	return null;
937		}
938	<	catch(Exception e) {
939	<	threadUnexpectedException();
938	>	}
939	>	}
940	>
941	>	public abstract class CheckedInterruptedCallable<T>
942	>	implements Callable<T> {
943	>	protected abstract T realCall() throws Throwable;
944	>
945	>	public final T call() {
946	>	try {
947	>	T result = realCall();
948	>	threadShouldThrow("InterruptedException");
949	>	return result;
950	>	} catch (InterruptedException success) {
951	>	threadAssertFalse(Thread.interrupted());
952	>	} catch (Throwable t) {
953	>	threadUnexpectedException(t);
954		}
955	+	return null;
956	+	}
957	+	}
958	+
959	+	public static class NoOpRunnable implements Runnable {
960	+	public void run() {}
961	+	}
962	+
963	+	public static class NoOpCallable implements Callable {
964	+	public Object call() { return Boolean.TRUE; }
965	+	}
966	+
967	+	public static final String TEST_STRING = "a test string";
968	+
969	+	public static class StringTask implements Callable<String> {
970	+	public String call() { return TEST_STRING; }
971	+	}
972	+
973	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
974	+	return new CheckedCallable<String>() {
975	+	protected String realCall() {
976	+	try {
977	+	latch.await();
978	+	} catch (InterruptedException quittingTime) {}
979	+	return TEST_STRING;
980	+	}};
981	+	}
982	+
983	+	public Runnable awaiter(final CountDownLatch latch) {
984	+	return new CheckedRunnable() {
985	+	public void realRun() throws InterruptedException {
986	+	await(latch);
987	+	}};
988	+	}
989	+
990	+	public void await(CountDownLatch latch) {
991	+	try {
992	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
993	+	} catch (Throwable t) {
994	+	threadUnexpectedException(t);
995	+	}
996	+	}
997	+
998	+	public void await(Semaphore semaphore) {
999	+	try {
1000	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1001	+	} catch (Throwable t) {
1002	+	threadUnexpectedException(t);
1003	+	}
1004	+	}
1005	+
1006	+	//     /**
1007	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1008	+	//      */
1009	+	//     public void await(AtomicBoolean flag) {
1010	+	//         await(flag, LONG_DELAY_MS);
1011	+	//     }
1012	+
1013	+	//     /**
1014	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1015	+	//      */
1016	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1017	+	//         long startTime = System.nanoTime();
1018	+	//         while (!flag.get()) {
1019	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1020	+	//                 throw new AssertionFailedError("timed out");
1021	+	//             Thread.yield();
1022	+	//         }
1023	+	//     }
1024	+
1025	+	public static class NPETask implements Callable<String> {
1026	+	public String call() { throw new NullPointerException(); }
1027	+	}
1028	+
1029	+	public static class CallableOne implements Callable<Integer> {
1030	+	public Integer call() { return one; }
1031	+	}
1032	+
1033	+	public class ShortRunnable extends CheckedRunnable {
1034	+	protected void realRun() throws Throwable {
1035	+	delay(SHORT_DELAY_MS);
1036	+	}
1037	+	}
1038	+
1039	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1040	+	protected void realRun() throws InterruptedException {
1041	+	delay(SHORT_DELAY_MS);
1042	+	}
1043	+	}
1044	+
1045	+	public class SmallRunnable extends CheckedRunnable {
1046	+	protected void realRun() throws Throwable {
1047	+	delay(SMALL_DELAY_MS);
1048	+	}
1049	+	}
1050	+
1051	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1052	+	protected void realRun() {
1053	+	try {
1054	+	delay(SMALL_DELAY_MS);
1055	+	} catch (InterruptedException ok) {}
1056	+	}
1057	+	}
1058	+
1059	+	public class SmallCallable extends CheckedCallable {
1060	+	protected Object realCall() throws InterruptedException {
1061	+	delay(SMALL_DELAY_MS);
1062		return Boolean.TRUE;
1063		}
1064		}
1065
1066	<	public class SmallInterruptedRunnable implements Runnable {
1066	>	public class MediumRunnable extends CheckedRunnable {
1067	>	protected void realRun() throws Throwable {
1068	>	delay(MEDIUM_DELAY_MS);
1069	>	}
1070	>	}
1071	>
1072	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1073	>	protected void realRun() throws InterruptedException {
1074	>	delay(MEDIUM_DELAY_MS);
1075	>	}
1076	>	}
1077	>
1078	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1079	>	return new CheckedRunnable() {
1080	>	protected void realRun() {
1081	>	try {
1082	>	delay(timeoutMillis);
1083	>	} catch (InterruptedException ok) {}
1084	>	}};
1085	>	}
1086	>
1087	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1088	>	protected void realRun() {
1089	>	try {
1090	>	delay(MEDIUM_DELAY_MS);
1091	>	} catch (InterruptedException ok) {}
1092	>	}
1093	>	}
1094	>
1095	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1096	>	protected void realRun() {
1097	>	try {
1098	>	delay(LONG_DELAY_MS);
1099	>	} catch (InterruptedException ok) {}
1100	>	}
1101	>	}
1102	>
1103	>	/**
1104	>	* For use as ThreadFactory in constructors
1105	>	*/
1106	>	public static class SimpleThreadFactory implements ThreadFactory {
1107	>	public Thread newThread(Runnable r) {
1108	>	return new Thread(r);
1109	>	}
1110	>	}
1111	>
1112	>	public interface TrackedRunnable extends Runnable {
1113	>	boolean isDone();
1114	>	}
1115	>
1116	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1117	>	return new TrackedRunnable() {
1118	>	private volatile boolean done = false;
1119	>	public boolean isDone() { return done; }
1120	>	public void run() {
1121	>	try {
1122	>	delay(timeoutMillis);
1123	>	done = true;
1124	>	} catch (InterruptedException ok) {}
1125	>	}
1126	>	};
1127	>	}
1128	>
1129	>	public static class TrackedShortRunnable implements Runnable {
1130	>	public volatile boolean done = false;
1131		public void run() {
1132		try {
1133	<	Thread.sleep(SMALL_DELAY_MS);
1134	<	threadShouldThrow();
1135	<	}
256	<	catch(InterruptedException success) {
257	<	}
1133	>	delay(SHORT_DELAY_MS);
1134	>	done = true;
1135	>	} catch (InterruptedException ok) {}
1136		}
1137		}
1138
1139	+	public static class TrackedSmallRunnable implements Runnable {
1140	+	public volatile boolean done = false;
1141	+	public void run() {
1142	+	try {
1143	+	delay(SMALL_DELAY_MS);
1144	+	done = true;
1145	+	} catch (InterruptedException ok) {}
1146	+	}
1147	+	}
1148
1149	<	public class MediumRunnable implements Runnable {
1149	>	public static class TrackedMediumRunnable implements Runnable {
1150	>	public volatile boolean done = false;
1151		public void run() {
1152		try {
1153	<	Thread.sleep(MEDIUM_DELAY_MS);
1154	<	}
1155	<	catch(Exception e) {
268	<	threadUnexpectedException();
269	<	}
1153	>	delay(MEDIUM_DELAY_MS);
1154	>	done = true;
1155	>	} catch (InterruptedException ok) {}
1156		}
1157		}
1158
1159	<	public class MediumInterruptedRunnable implements Runnable {
1159	>	public static class TrackedLongRunnable implements Runnable {
1160	>	public volatile boolean done = false;
1161		public void run() {
1162		try {
1163	<	Thread.sleep(MEDIUM_DELAY_MS);
1164	<	threadShouldThrow();
1165	<	}
279	<	catch(InterruptedException success) {
280	<	}
1163	>	delay(LONG_DELAY_MS);
1164	>	done = true;
1165	>	} catch (InterruptedException ok) {}
1166		}
1167		}
1168
1169	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1169	>	public static class TrackedNoOpRunnable implements Runnable {
1170	>	public volatile boolean done = false;
1171		public void run() {
1172	+	done = true;
1173	+	}
1174	+	}
1175	+
1176	+	public static class TrackedCallable implements Callable {
1177	+	public volatile boolean done = false;
1178	+	public Object call() {
1179		try {
1180	<	Thread.sleep(MEDIUM_DELAY_MS);
1180	>	delay(SMALL_DELAY_MS);
1181	>	done = true;
1182	>	} catch (InterruptedException ok) {}
1183	>	return Boolean.TRUE;
1184	>	}
1185	>	}
1186	>
1187	>	/**
1188	>	* Analog of CheckedRunnable for RecursiveAction
1189	>	*/
1190	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1191	>	protected abstract void realCompute() throws Throwable;
1192	>
1193	>	public final void compute() {
1194	>	try {
1195	>	realCompute();
1196	>	} catch (Throwable t) {
1197	>	threadUnexpectedException(t);
1198	>	}
1199	>	}
1200	>	}
1201	>
1202	>	/**
1203	>	* Analog of CheckedCallable for RecursiveTask
1204	>	*/
1205	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1206	>	protected abstract T realCompute() throws Throwable;
1207	>
1208	>	public final T compute() {
1209	>	try {
1210	>	return realCompute();
1211	>	} catch (Throwable t) {
1212	>	threadUnexpectedException(t);
1213	>	return null;
1214		}
1215	<	catch(InterruptedException success) {
1215	>	}
1216	>	}
1217	>
1218	>	/**
1219	>	* For use as RejectedExecutionHandler in constructors
1220	>	*/
1221	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1222	>	public void rejectedExecution(Runnable r,
1223	>	ThreadPoolExecutor executor) {}
1224	>	}
1225	>
1226	>	/**
1227	>	* A CyclicBarrier that uses timed await and fails with
1228	>	* AssertionFailedErrors instead of throwing checked exceptions.
1229	>	*/
1230	>	public class CheckedBarrier extends CyclicBarrier {
1231	>	public CheckedBarrier(int parties) { super(parties); }
1232	>
1233	>	public int await() {
1234	>	try {
1235	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1236	>	} catch (TimeoutException e) {
1237	>	throw new AssertionFailedError("timed out");
1238	>	} catch (Exception e) {
1239	>	AssertionFailedError afe =
1240	>	new AssertionFailedError("Unexpected exception: " + e);
1241	>	afe.initCause(e);
1242	>	throw afe;
1243		}
1244		}
1245		}
1246	<
1246	>
1247	>	void checkEmpty(BlockingQueue q) {
1248	>	try {
1249	>	assertTrue(q.isEmpty());
1250	>	assertEquals(0, q.size());
1251	>	assertNull(q.peek());
1252	>	assertNull(q.poll());
1253	>	assertNull(q.poll(0, MILLISECONDS));
1254	>	assertEquals(q.toString(), "[]");
1255	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1256	>	assertFalse(q.iterator().hasNext());
1257	>	try {
1258	>	q.element();
1259	>	shouldThrow();
1260	>	} catch (NoSuchElementException success) {}
1261	>	try {
1262	>	q.iterator().next();
1263	>	shouldThrow();
1264	>	} catch (NoSuchElementException success) {}
1265	>	try {
1266	>	q.remove();
1267	>	shouldThrow();
1268	>	} catch (NoSuchElementException success) {}
1269	>	} catch (InterruptedException ie) {
1270	>	threadUnexpectedException(ie);
1271	>	}
1272	>	}
1273	>
1274	>	void assertSerialEquals(Object x, Object y) {
1275	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1276	>	}
1277	>
1278	>	void assertNotSerialEquals(Object x, Object y) {
1279	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1280	>	}
1281	>
1282	>	byte[] serialBytes(Object o) {
1283	>	try {
1284	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1285	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1286	>	oos.writeObject(o);
1287	>	oos.flush();
1288	>	oos.close();
1289	>	return bos.toByteArray();
1290	>	} catch (Throwable t) {
1291	>	threadUnexpectedException(t);
1292	>	return new byte[0];
1293	>	}
1294	>	}
1295	>
1296	>	@SuppressWarnings("unchecked")
1297	>	<T> T serialClone(T o) {
1298	>	try {
1299	>	ObjectInputStream ois = new ObjectInputStream
1300	>	(new ByteArrayInputStream(serialBytes(o)));
1301	>	T clone = (T) ois.readObject();
1302	>	assertSame(o.getClass(), clone.getClass());
1303	>	return clone;
1304	>	} catch (Throwable t) {
1305	>	threadUnexpectedException(t);
1306	>	return null;
1307	>	}
1308	>	}
1309		}

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