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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.5 by dl, Fri Sep 26 15:33:13 2003 UTC vs.
Revision 1.99 by jsr166, Tue Feb 5 03:39:34 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,
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 doe not otherwise arrange).  The rules for creating such
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
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	+	"StampedLockTest",
290	+	"ForkJoinPool8Test",
291	+	};
292	+	addNamedTestClasses(suite, java8TestClassNames);
293	+	}
294	+
295	+	return suite;
296	+	}
297	+
298
299		public static long SHORT_DELAY_MS;
300		public static long SMALL_DELAY_MS;
#	Line 61 | Line 303 | public class JSR166TestCase extends Test
303
304
305		/**
306	<	* Return the shortest timed delay. This could
307	<	* be reimplmented to use for example a Property.
308	<	*/
306	>	* Returns the shortest timed delay. This could
307	>	* be reimplemented to use for example a Property.
308	>	*/
309		protected long getShortDelay() {
310	<	return 100;
310	>	return 50;
311		}
312
71	–
313		/**
314	<	* Set delays as multiples of SHORT_DELAY.
314	>	* Sets delays as multiples of SHORT_DELAY.
315		*/
316	<	protected  void setDelays() {
316	>	protected void setDelays() {
317		SHORT_DELAY_MS = getShortDelay();
318	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
318	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
319		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
320	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
320	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
321		}
322
323		/**
324	<	* Flag set true if any threadAssert methods fail
324	>	* Returns a timeout in milliseconds to be used in tests that
325	>	* verify that operations block or time out.
326		*/
327	<	volatile boolean threadFailed;
327	>	long timeoutMillis() {
328	>	return SHORT_DELAY_MS / 4;
329	>	}
330
331		/**
332	<	* Initialize test to indicate that no thread assertions have failed
332	>	* Returns a new Date instance representing a time delayMillis
333	>	* milliseconds in the future.
334		*/
335	<	public void setUp() {
335	>	Date delayedDate(long delayMillis) {
336	>	return new Date(System.currentTimeMillis() + delayMillis);
337	>	}
338	>
339	>	/**
340	>	* The first exception encountered if any threadAssertXXX method fails.
341	>	*/
342	>	private final AtomicReference<Throwable> threadFailure
343	>	= new AtomicReference<Throwable>(null);
344	>
345	>	/**
346	>	* Records an exception so that it can be rethrown later in the test
347	>	* harness thread, triggering a test case failure.  Only the first
348	>	* failure is recorded; subsequent calls to this method from within
349	>	* the same test have no effect.
350	>	*/
351	>	public void threadRecordFailure(Throwable t) {
352	>	threadFailure.compareAndSet(null, t);
353	>	}
354	>
355	>	public void setUp() {
356		setDelays();
92	–	threadFailed = false;
357		}
358
359		/**
360	<	* Trigger test case failure if any thread assertions have failed
360	>	* Extra checks that get done for all test cases.
361	>	*
362	>	* Triggers test case failure if any thread assertions have failed,
363	>	* by rethrowing, in the test harness thread, any exception recorded
364	>	* earlier by threadRecordFailure.
365	>	*
366	>	* Triggers test case failure if interrupt status is set in the main thread.
367		*/
368	<	public void tearDown() {
369	<	assertFalse(threadFailed);
368	>	public void tearDown() throws Exception {
369	>	Throwable t = threadFailure.getAndSet(null);
370	>	if (t != null) {
371	>	if (t instanceof Error)
372	>	throw (Error) t;
373	>	else if (t instanceof RuntimeException)
374	>	throw (RuntimeException) t;
375	>	else if (t instanceof Exception)
376	>	throw (Exception) t;
377	>	else {
378	>	AssertionFailedError afe =
379	>	new AssertionFailedError(t.toString());
380	>	afe.initCause(t);
381	>	throw afe;
382	>	}
383	>	}
384	>
385	>	if (Thread.interrupted())
386	>	throw new AssertionFailedError("interrupt status set in main thread");
387		}
388
389		/**
390	<	* Fail, also setting status to indicate current testcase should fail
391	<	*/
390	>	* Just like fail(reason), but additionally recording (using
391	>	* threadRecordFailure) any AssertionFailedError thrown, so that
392	>	* the current testcase will fail.
393	>	*/
394		public void threadFail(String reason) {
395	<	threadFailed = true;
396	<	fail(reason);
395	>	try {
396	>	fail(reason);
397	>	} catch (AssertionFailedError t) {
398	>	threadRecordFailure(t);
399	>	fail(reason);
400	>	}
401		}
402
403		/**
404	<	* If expression not true, set status to indicate current testcase
405	<	* should fail
406	<	*/
404	>	* Just like assertTrue(b), but additionally recording (using
405	>	* threadRecordFailure) any AssertionFailedError thrown, so that
406	>	* the current testcase will fail.
407	>	*/
408		public void threadAssertTrue(boolean b) {
409	<	if (!b) {
116	<	threadFailed = true;
409	>	try {
410		assertTrue(b);
411	+	} catch (AssertionFailedError t) {
412	+	threadRecordFailure(t);
413	+	throw t;
414		}
415		}
416
417		/**
418	<	* If expression not false, set status to indicate current testcase
419	<	* should fail
420	<	*/
418	>	* Just like assertFalse(b), but additionally recording (using
419	>	* threadRecordFailure) any AssertionFailedError thrown, so that
420	>	* the current testcase will fail.
421	>	*/
422		public void threadAssertFalse(boolean b) {
423	<	if (b) {
127	<	threadFailed = true;
423	>	try {
424		assertFalse(b);
425	+	} catch (AssertionFailedError t) {
426	+	threadRecordFailure(t);
427	+	throw t;
428		}
429		}
430
431		/**
432	<	* If argument not null, set status to indicate current testcase
433	<	* should fail
434	<	*/
432	>	* Just like assertNull(x), but additionally recording (using
433	>	* threadRecordFailure) any AssertionFailedError thrown, so that
434	>	* the current testcase will fail.
435	>	*/
436		public void threadAssertNull(Object x) {
437	<	if (x != null) {
138	<	threadFailed = true;
437	>	try {
438		assertNull(x);
439	+	} catch (AssertionFailedError t) {
440	+	threadRecordFailure(t);
441	+	throw t;
442		}
443		}
444
445		/**
446	<	* If arguments not equal, set status to indicate current testcase
447	<	* should fail
448	<	*/
446	>	* Just like assertEquals(x, y), but additionally recording (using
447	>	* threadRecordFailure) any AssertionFailedError thrown, so that
448	>	* the current testcase will fail.
449	>	*/
450		public void threadAssertEquals(long x, long y) {
451	<	if (x != y) {
149	<	threadFailed = true;
451	>	try {
452		assertEquals(x, y);
453	+	} catch (AssertionFailedError t) {
454	+	threadRecordFailure(t);
455	+	throw t;
456		}
457		}
458
459		/**
460	<	* If arguments not equal, set status to indicate current testcase
461	<	* should fail
462	<	*/
460	>	* Just like assertEquals(x, y), but additionally recording (using
461	>	* threadRecordFailure) any AssertionFailedError thrown, so that
462	>	* the current testcase will fail.
463	>	*/
464		public void threadAssertEquals(Object x, Object y) {
465	<	if (x != y && (x == null || !x.equals(y))) {
160	<	threadFailed = true;
465	>	try {
466		assertEquals(x, y);
467	+	} catch (AssertionFailedError t) {
468	+	threadRecordFailure(t);
469	+	throw t;
470	+	} catch (Throwable t) {
471	+	threadUnexpectedException(t);
472	+	}
473	+	}
474	+
475	+	/**
476	+	* Just like assertSame(x, y), but additionally recording (using
477	+	* threadRecordFailure) any AssertionFailedError thrown, so that
478	+	* the current testcase will fail.
479	+	*/
480	+	public void threadAssertSame(Object x, Object y) {
481	+	try {
482	+	assertSame(x, y);
483	+	} catch (AssertionFailedError t) {
484	+	threadRecordFailure(t);
485	+	throw t;
486		}
487		}
488
489		/**
490	<	* threadFail with message "should throw exception"
491	<	*/
490	>	* Calls threadFail with message "should throw exception".
491	>	*/
492		public void threadShouldThrow() {
493	<	threadFailed = true;
494	<	fail("should throw exception");
493	>	threadFail("should throw exception");
494	>	}
495	>
496	>	/**
497	>	* Calls threadFail with message "should throw" + exceptionName.
498	>	*/
499	>	public void threadShouldThrow(String exceptionName) {
500	>	threadFail("should throw " + exceptionName);
501		}
502
503		/**
504	<	* threadFail with message "Unexpected exception"
504	>	* Records the given exception using {@link #threadRecordFailure},
505	>	* then rethrows the exception, wrapping it in an
506	>	* AssertionFailedError if necessary.
507		*/
508	<	public void threadUnexpectedException() {
509	<	threadFailed = true;
510	<	fail("Unexpected exception");
508	>	public void threadUnexpectedException(Throwable t) {
509	>	threadRecordFailure(t);
510	>	t.printStackTrace();
511	>	if (t instanceof RuntimeException)
512	>	throw (RuntimeException) t;
513	>	else if (t instanceof Error)
514	>	throw (Error) t;
515	>	else {
516	>	AssertionFailedError afe =
517	>	new AssertionFailedError("unexpected exception: " + t);
518	>	afe.initCause(t);
519	>	throw afe;
520	>	}
521		}
522
523	+	/**
524	+	* Delays, via Thread.sleep, for the given millisecond delay, but
525	+	* if the sleep is shorter than specified, may re-sleep or yield
526	+	* until time elapses.
527	+	*/
528	+	static void delay(long millis) throws InterruptedException {
529	+	long startTime = System.nanoTime();
530	+	long ns = millis * 1000 * 1000;
531	+	for (;;) {
532	+	if (millis > 0L)
533	+	Thread.sleep(millis);
534	+	else // too short to sleep
535	+	Thread.yield();
536	+	long d = ns - (System.nanoTime() - startTime);
537	+	if (d > 0L)
538	+	millis = d / (1000 * 1000);
539	+	else
540	+	break;
541	+	}
542	+	}
543
544		/**
545	<	* Wait out termination of a thread pool or fail doing so
545	>	* Waits out termination of a thread pool or fails doing so.
546		*/
547	<	public void joinPool(ExecutorService exec) {
547	>	void joinPool(ExecutorService exec) {
548		try {
549		exec.shutdown();
550	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
551	<	} catch(InterruptedException ie) {
552	<	fail("Unexpected exception");
550	>	assertTrue("ExecutorService did not terminate in a timely manner",
551	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
552	>	} catch (SecurityException ok) {
553	>	// Allowed in case test doesn't have privs
554	>	} catch (InterruptedException ie) {
555	>	fail("Unexpected InterruptedException");
556		}
557		}
558
559	+	/**
560	+	* A debugging tool to print all stack traces, as jstack does.
561	+	*/
562	+	static void printAllStackTraces() {
563	+	for (ThreadInfo info :
564	+	ManagementFactory.getThreadMXBean()
565	+	.dumpAllThreads(true, true))
566	+	System.err.print(info);
567	+	}
568	+
569	+	/**
570	+	* Checks that thread does not terminate within the default
571	+	* millisecond delay of {@code timeoutMillis()}.
572	+	*/
573	+	void assertThreadStaysAlive(Thread thread) {
574	+	assertThreadStaysAlive(thread, timeoutMillis());
575	+	}
576
577		/**
578	<	* fail with message "should throw exception"
579	<	*/
578	>	* Checks that thread does not terminate within the given millisecond delay.
579	>	*/
580	>	void assertThreadStaysAlive(Thread thread, long millis) {
581	>	try {
582	>	// No need to optimize the failing case via Thread.join.
583	>	delay(millis);
584	>	assertTrue(thread.isAlive());
585	>	} catch (InterruptedException ie) {
586	>	fail("Unexpected InterruptedException");
587	>	}
588	>	}
589	>
590	>	/**
591	>	* Checks that the threads do not terminate within the default
592	>	* millisecond delay of {@code timeoutMillis()}.
593	>	*/
594	>	void assertThreadsStayAlive(Thread... threads) {
595	>	assertThreadsStayAlive(timeoutMillis(), threads);
596	>	}
597	>
598	>	/**
599	>	* Checks that the threads do not terminate within the given millisecond delay.
600	>	*/
601	>	void assertThreadsStayAlive(long millis, Thread... threads) {
602	>	try {
603	>	// No need to optimize the failing case via Thread.join.
604	>	delay(millis);
605	>	for (Thread thread : threads)
606	>	assertTrue(thread.isAlive());
607	>	} catch (InterruptedException ie) {
608	>	fail("Unexpected InterruptedException");
609	>	}
610	>	}
611	>
612	>	/**
613	>	* Checks that future.get times out, with the default timeout of
614	>	* {@code timeoutMillis()}.
615	>	*/
616	>	void assertFutureTimesOut(Future future) {
617	>	assertFutureTimesOut(future, timeoutMillis());
618	>	}
619	>
620	>	/**
621	>	* Checks that future.get times out, with the given millisecond timeout.
622	>	*/
623	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
624	>	long startTime = System.nanoTime();
625	>	try {
626	>	future.get(timeoutMillis, MILLISECONDS);
627	>	shouldThrow();
628	>	} catch (TimeoutException success) {
629	>	} catch (Exception e) {
630	>	threadUnexpectedException(e);
631	>	} finally { future.cancel(true); }
632	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
633	>	}
634	>
635	>	/**
636	>	* Fails with message "should throw exception".
637	>	*/
638		public void shouldThrow() {
639		fail("Should throw exception");
640		}
641
642		/**
643	<	* fail with message "Unexpected exception"
643	>	* Fails with message "should throw " + exceptionName.
644		*/
645	<	public void unexpectedException() {
646	<	fail("Unexpected exception");
645	>	public void shouldThrow(String exceptionName) {
646	>	fail("Should throw " + exceptionName);
647		}
648
209	–
649		/**
650		* The number of elements to place in collections, arrays, etc.
651		*/
652	<	static final int SIZE = 20;
652	>	public static final int SIZE = 20;
653
654		// Some convenient Integer constants
655
656	<	static final Integer zero = new Integer(0);
657	<	static final Integer one = new Integer(1);
658	<	static final Integer two = new Integer(2);
659	<	static final Integer three  = new Integer(3);
660	<	static final Integer four  = new Integer(4);
661	<	static final Integer five  = new Integer(5);
662	<	static final Integer six = new Integer(6);
663	<	static final Integer seven = new Integer(7);
664	<	static final Integer eight = new Integer(8);
665	<	static final Integer nine = new Integer(9);
666	<	static final Integer m1  = new Integer(-1);
667	<	static final Integer m2  = new Integer(-2);
668	<	static final Integer m3  = new Integer(-3);
669	<	static final Integer m4 = new Integer(-4);
670	<	static final Integer m5 = new Integer(-5);
671	<	static final Integer m10 = new Integer(-10);
656	>	public static final Integer zero  = new Integer(0);
657	>	public static final Integer one   = new Integer(1);
658	>	public static final Integer two   = new Integer(2);
659	>	public static final Integer three = new Integer(3);
660	>	public static final Integer four  = new Integer(4);
661	>	public static final Integer five  = new Integer(5);
662	>	public static final Integer six   = new Integer(6);
663	>	public static final Integer seven = new Integer(7);
664	>	public static final Integer eight = new Integer(8);
665	>	public static final Integer nine  = new Integer(9);
666	>	public static final Integer m1  = new Integer(-1);
667	>	public static final Integer m2  = new Integer(-2);
668	>	public static final Integer m3  = new Integer(-3);
669	>	public static final Integer m4  = new Integer(-4);
670	>	public static final Integer m5  = new Integer(-5);
671	>	public static final Integer m6  = new Integer(-6);
672	>	public static final Integer m10 = new Integer(-10);
673
674
675	<	// Some convenient Runnable classes
675	>	/**
676	>	* Runs Runnable r with a security policy that permits precisely
677	>	* the specified permissions.  If there is no current security
678	>	* manager, the runnable is run twice, both with and without a
679	>	* security manager.  We require that any security manager permit
680	>	* getPolicy/setPolicy.
681	>	*/
682	>	public void runWithPermissions(Runnable r, Permission... permissions) {
683	>	SecurityManager sm = System.getSecurityManager();
684	>	if (sm == null) {
685	>	r.run();
686	>	}
687	>	runWithSecurityManagerWithPermissions(r, permissions);
688	>	}
689
690	<	static class NoOpRunnable implements Runnable {
691	<	public void run() {}
690	>	/**
691	>	* Runs Runnable r with a security policy that permits precisely
692	>	* the specified permissions.  If there is no current security
693	>	* manager, a temporary one is set for the duration of the
694	>	* Runnable.  We require that any security manager permit
695	>	* getPolicy/setPolicy.
696	>	*/
697	>	public void runWithSecurityManagerWithPermissions(Runnable r,
698	>	Permission... permissions) {
699	>	SecurityManager sm = System.getSecurityManager();
700	>	if (sm == null) {
701	>	Policy savedPolicy = Policy.getPolicy();
702	>	try {
703	>	Policy.setPolicy(permissivePolicy());
704	>	System.setSecurityManager(new SecurityManager());
705	>	runWithSecurityManagerWithPermissions(r, permissions);
706	>	} finally {
707	>	System.setSecurityManager(null);
708	>	Policy.setPolicy(savedPolicy);
709	>	}
710	>	} else {
711	>	Policy savedPolicy = Policy.getPolicy();
712	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
713	>	Policy.setPolicy(policy);
714	>
715	>	try {
716	>	r.run();
717	>	} finally {
718	>	policy.addPermission(new SecurityPermission("setPolicy"));
719	>	Policy.setPolicy(savedPolicy);
720	>	}
721	>	}
722		}
723
724	<	static class NoOpCallable implements Callable {
725	<	public Object call() { return Boolean.TRUE; }
724	>	/**
725	>	* Runs a runnable without any permissions.
726	>	*/
727	>	public void runWithoutPermissions(Runnable r) {
728	>	runWithPermissions(r);
729		}
730
731	<	class ShortRunnable implements Runnable {
732	<	public void run() {
733	<	try {
734	<	Thread.sleep(SHORT_DELAY_MS);
731	>	/**
732	>	* A security policy where new permissions can be dynamically added
733	>	* or all cleared.
734	>	*/
735	>	public static class AdjustablePolicy extends java.security.Policy {
736	>	Permissions perms = new Permissions();
737	>	AdjustablePolicy(Permission... permissions) {
738	>	for (Permission permission : permissions)
739	>	perms.add(permission);
740	>	}
741	>	void addPermission(Permission perm) { perms.add(perm); }
742	>	void clearPermissions() { perms = new Permissions(); }
743	>	public PermissionCollection getPermissions(CodeSource cs) {
744	>	return perms;
745	>	}
746	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
747	>	return perms;
748	>	}
749	>	public boolean implies(ProtectionDomain pd, Permission p) {
750	>	return perms.implies(p);
751	>	}
752	>	public void refresh() {}
753	>	public String toString() {
754	>	List<Permission> ps = new ArrayList<Permission>();
755	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
756	>	ps.add(e.nextElement());
757	>	return "AdjustablePolicy with permissions " + ps;
758	>	}
759	>	}
760	>
761	>	/**
762	>	* Returns a policy containing all the permissions we ever need.
763	>	*/
764	>	public static Policy permissivePolicy() {
765	>	return new AdjustablePolicy
766	>	// Permissions j.u.c. needs directly
767	>	(new RuntimePermission("modifyThread"),
768	>	new RuntimePermission("getClassLoader"),
769	>	new RuntimePermission("setContextClassLoader"),
770	>	// Permissions needed to change permissions!
771	>	new SecurityPermission("getPolicy"),
772	>	new SecurityPermission("setPolicy"),
773	>	new RuntimePermission("setSecurityManager"),
774	>	// Permissions needed by the junit test harness
775	>	new RuntimePermission("accessDeclaredMembers"),
776	>	new PropertyPermission("*", "read"),
777	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
778	>	}
779	>
780	>	/**
781	>	* Sleeps until the given time has elapsed.
782	>	* Throws AssertionFailedError if interrupted.
783	>	*/
784	>	void sleep(long millis) {
785	>	try {
786	>	delay(millis);
787	>	} catch (InterruptedException ie) {
788	>	AssertionFailedError afe =
789	>	new AssertionFailedError("Unexpected InterruptedException");
790	>	afe.initCause(ie);
791	>	throw afe;
792	>	}
793	>	}
794	>
795	>	/**
796	>	* Spin-waits up to the specified number of milliseconds for the given
797	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
798	>	*/
799	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
800	>	long startTime = System.nanoTime();
801	>	for (;;) {
802	>	Thread.State s = thread.getState();
803	>	if (s == Thread.State.BLOCKED ||
804	>	s == Thread.State.WAITING ||
805	>	s == Thread.State.TIMED_WAITING)
806	>	return;
807	>	else if (s == Thread.State.TERMINATED)
808	>	fail("Unexpected thread termination");
809	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
810	>	threadAssertTrue(thread.isAlive());
811	>	return;
812		}
813	<	catch(Exception e) {
814	<	threadUnexpectedException();
813	>	Thread.yield();
814	>	}
815	>	}
816	>
817	>	/**
818	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
819	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
820	>	*/
821	>	void waitForThreadToEnterWaitState(Thread thread) {
822	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
823	>	}
824	>
825	>	/**
826	>	* Returns the number of milliseconds since time given by
827	>	* startNanoTime, which must have been previously returned from a
828	>	* call to {@link System.nanoTime()}.
829	>	*/
830	>	long millisElapsedSince(long startNanoTime) {
831	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
832	>	}
833	>
834	>	/**
835	>	* Returns a new started daemon Thread running the given runnable.
836	>	*/
837	>	Thread newStartedThread(Runnable runnable) {
838	>	Thread t = new Thread(runnable);
839	>	t.setDaemon(true);
840	>	t.start();
841	>	return t;
842	>	}
843	>
844	>	/**
845	>	* Waits for the specified time (in milliseconds) for the thread
846	>	* to terminate (using {@link Thread#join(long)}), else interrupts
847	>	* the thread (in the hope that it may terminate later) and fails.
848	>	*/
849	>	void awaitTermination(Thread t, long timeoutMillis) {
850	>	try {
851	>	t.join(timeoutMillis);
852	>	} catch (InterruptedException ie) {
853	>	threadUnexpectedException(ie);
854	>	} finally {
855	>	if (t.getState() != Thread.State.TERMINATED) {
856	>	t.interrupt();
857	>	fail("Test timed out");
858		}
859		}
860		}
861
862	<	class ShortInterruptedRunnable implements Runnable {
863	<	public void run() {
862	>	/**
863	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
864	>	* terminate (using {@link Thread#join(long)}), else interrupts
865	>	* the thread (in the hope that it may terminate later) and fails.
866	>	*/
867	>	void awaitTermination(Thread t) {
868	>	awaitTermination(t, LONG_DELAY_MS);
869	>	}
870	>
871	>	// Some convenient Runnable classes
872	>
873	>	public abstract class CheckedRunnable implements Runnable {
874	>	protected abstract void realRun() throws Throwable;
875	>
876	>	public final void run() {
877		try {
878	<	Thread.sleep(SHORT_DELAY_MS);
879	<	threadShouldThrow();
880	<	}
262	<	catch(InterruptedException success) {
878	>	realRun();
879	>	} catch (Throwable t) {
880	>	threadUnexpectedException(t);
881		}
882		}
883		}
884
885	<	class SmallRunnable implements Runnable {
886	<	public void run() {
885	>	public abstract class RunnableShouldThrow implements Runnable {
886	>	protected abstract void realRun() throws Throwable;
887	>
888	>	final Class<?> exceptionClass;
889	>
890	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
891	>	this.exceptionClass = exceptionClass;
892	>	}
893	>
894	>	public final void run() {
895		try {
896	<	Thread.sleep(SMALL_DELAY_MS);
897	<	}
898	<	catch(Exception e) {
899	<	threadUnexpectedException();
896	>	realRun();
897	>	threadShouldThrow(exceptionClass.getSimpleName());
898	>	} catch (Throwable t) {
899	>	if (! exceptionClass.isInstance(t))
900	>	threadUnexpectedException(t);
901		}
902		}
903		}
904
905	<	class SmallCallable implements Callable {
906	<	public Object call() {
905	>	public abstract class ThreadShouldThrow extends Thread {
906	>	protected abstract void realRun() throws Throwable;
907	>
908	>	final Class<?> exceptionClass;
909	>
910	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
911	>	this.exceptionClass = exceptionClass;
912	>	}
913	>
914	>	public final void run() {
915		try {
916	<	Thread.sleep(SMALL_DELAY_MS);
917	<	}
918	<	catch(Exception e) {
919	<	threadUnexpectedException();
916	>	realRun();
917	>	threadShouldThrow(exceptionClass.getSimpleName());
918	>	} catch (Throwable t) {
919	>	if (! exceptionClass.isInstance(t))
920	>	threadUnexpectedException(t);
921		}
286	–	return Boolean.TRUE;
922		}
923		}
924
925	<	class SmallInterruptedRunnable implements Runnable {
926	<	public void run() {
925	>	public abstract class CheckedInterruptedRunnable implements Runnable {
926	>	protected abstract void realRun() throws Throwable;
927	>
928	>	public final void run() {
929		try {
930	<	Thread.sleep(SMALL_DELAY_MS);
931	<	threadShouldThrow();
932	<	}
933	<	catch(InterruptedException success) {
930	>	realRun();
931	>	threadShouldThrow("InterruptedException");
932	>	} catch (InterruptedException success) {
933	>	threadAssertFalse(Thread.interrupted());
934	>	} catch (Throwable t) {
935	>	threadUnexpectedException(t);
936		}
937		}
938		}
939
940	+	public abstract class CheckedCallable<T> implements Callable<T> {
941	+	protected abstract T realCall() throws Throwable;
942
943	<	class MediumRunnable implements Runnable {
303	<	public void run() {
943	>	public final T call() {
944		try {
945	<	Thread.sleep(MEDIUM_DELAY_MS);
946	<	}
947	<	catch(Exception e) {
948	<	threadUnexpectedException();
945	>	return realCall();
946	>	} catch (Throwable t) {
947	>	threadUnexpectedException(t);
948	>	return null;
949		}
950		}
951		}
952
953	<	class MediumInterruptedRunnable implements Runnable {
954	<	public void run() {
953	>	public abstract class CheckedInterruptedCallable<T>
954	>	implements Callable<T> {
955	>	protected abstract T realCall() throws Throwable;
956	>
957	>	public final T call() {
958		try {
959	<	Thread.sleep(MEDIUM_DELAY_MS);
960	<	threadShouldThrow();
961	<	}
962	<	catch(InterruptedException success) {
959	>	T result = realCall();
960	>	threadShouldThrow("InterruptedException");
961	>	return result;
962	>	} catch (InterruptedException success) {
963	>	threadAssertFalse(Thread.interrupted());
964	>	} catch (Throwable t) {
965	>	threadUnexpectedException(t);
966		}
967	+	return null;
968		}
969		}
970
971	<	class MediumPossiblyInterruptedRunnable implements Runnable {
972	<	public void run() {
971	>	public static class NoOpRunnable implements Runnable {
972	>	public void run() {}
973	>	}
974	>
975	>	public static class NoOpCallable implements Callable {
976	>	public Object call() { return Boolean.TRUE; }
977	>	}
978	>
979	>	public static final String TEST_STRING = "a test string";
980	>
981	>	public static class StringTask implements Callable<String> {
982	>	public String call() { return TEST_STRING; }
983	>	}
984	>
985	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
986	>	return new CheckedCallable<String>() {
987	>	protected String realCall() {
988	>	try {
989	>	latch.await();
990	>	} catch (InterruptedException quittingTime) {}
991	>	return TEST_STRING;
992	>	}};
993	>	}
994	>
995	>	public Runnable awaiter(final CountDownLatch latch) {
996	>	return new CheckedRunnable() {
997	>	public void realRun() throws InterruptedException {
998	>	await(latch);
999	>	}};
1000	>	}
1001	>
1002	>	public void await(CountDownLatch latch) {
1003	>	try {
1004	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1005	>	} catch (Throwable t) {
1006	>	threadUnexpectedException(t);
1007	>	}
1008	>	}
1009	>
1010	>	public void await(Semaphore semaphore) {
1011	>	try {
1012	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1013	>	} catch (Throwable t) {
1014	>	threadUnexpectedException(t);
1015	>	}
1016	>	}
1017	>
1018	>	//     /**
1019	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1020	>	//      */
1021	>	//     public void await(AtomicBoolean flag) {
1022	>	//         await(flag, LONG_DELAY_MS);
1023	>	//     }
1024	>
1025	>	//     /**
1026	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1027	>	//      */
1028	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1029	>	//         long startTime = System.nanoTime();
1030	>	//         while (!flag.get()) {
1031	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1032	>	//                 throw new AssertionFailedError("timed out");
1033	>	//             Thread.yield();
1034	>	//         }
1035	>	//     }
1036	>
1037	>	public static class NPETask implements Callable<String> {
1038	>	public String call() { throw new NullPointerException(); }
1039	>	}
1040	>
1041	>	public static class CallableOne implements Callable<Integer> {
1042	>	public Integer call() { return one; }
1043	>	}
1044	>
1045	>	public class ShortRunnable extends CheckedRunnable {
1046	>	protected void realRun() throws Throwable {
1047	>	delay(SHORT_DELAY_MS);
1048	>	}
1049	>	}
1050	>
1051	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1052	>	protected void realRun() throws InterruptedException {
1053	>	delay(SHORT_DELAY_MS);
1054	>	}
1055	>	}
1056	>
1057	>	public class SmallRunnable extends CheckedRunnable {
1058	>	protected void realRun() throws Throwable {
1059	>	delay(SMALL_DELAY_MS);
1060	>	}
1061	>	}
1062	>
1063	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1064	>	protected void realRun() {
1065		try {
1066	<	Thread.sleep(MEDIUM_DELAY_MS);
1067	<	}
1068	<	catch(InterruptedException success) {
1069	<	}
1066	>	delay(SMALL_DELAY_MS);
1067	>	} catch (InterruptedException ok) {}
1068	>	}
1069	>	}
1070	>
1071	>	public class SmallCallable extends CheckedCallable {
1072	>	protected Object realCall() throws InterruptedException {
1073	>	delay(SMALL_DELAY_MS);
1074	>	return Boolean.TRUE;
1075	>	}
1076	>	}
1077	>
1078	>	public class MediumRunnable extends CheckedRunnable {
1079	>	protected void realRun() throws Throwable {
1080	>	delay(MEDIUM_DELAY_MS);
1081	>	}
1082	>	}
1083	>
1084	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1085	>	protected void realRun() throws InterruptedException {
1086	>	delay(MEDIUM_DELAY_MS);
1087	>	}
1088	>	}
1089	>
1090	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1091	>	return new CheckedRunnable() {
1092	>	protected void realRun() {
1093	>	try {
1094	>	delay(timeoutMillis);
1095	>	} catch (InterruptedException ok) {}
1096	>	}};
1097	>	}
1098	>
1099	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1100	>	protected void realRun() {
1101	>	try {
1102	>	delay(MEDIUM_DELAY_MS);
1103	>	} catch (InterruptedException ok) {}
1104	>	}
1105	>	}
1106	>
1107	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1108	>	protected void realRun() {
1109	>	try {
1110	>	delay(LONG_DELAY_MS);
1111	>	} catch (InterruptedException ok) {}
1112		}
1113		}
1114
1115		/**
1116		* For use as ThreadFactory in constructors
1117		*/
1118	<	static class SimpleThreadFactory implements ThreadFactory{
1119	<	public Thread newThread(Runnable r){
1118	>	public static class SimpleThreadFactory implements ThreadFactory {
1119	>	public Thread newThread(Runnable r) {
1120		return new Thread(r);
1121	<	}
1121	>	}
1122	>	}
1123	>
1124	>	public interface TrackedRunnable extends Runnable {
1125	>	boolean isDone();
1126	>	}
1127	>
1128	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1129	>	return new TrackedRunnable() {
1130	>	private volatile boolean done = false;
1131	>	public boolean isDone() { return done; }
1132	>	public void run() {
1133	>	try {
1134	>	delay(timeoutMillis);
1135	>	done = true;
1136	>	} catch (InterruptedException ok) {}
1137	>	}
1138	>	};
1139		}
1140
1141	<	static class TrackedRunnable implements Runnable {
1142	<	volatile boolean done = false;
1141	>	public static class TrackedShortRunnable implements Runnable {
1142	>	public volatile boolean done = false;
1143		public void run() {
1144		try {
1145	<	Thread.sleep(SMALL_DELAY_MS);
1145	>	delay(SHORT_DELAY_MS);
1146		done = true;
1147	<	} catch(Exception e){
1148	<	}
1147	>	} catch (InterruptedException ok) {}
1148	>	}
1149	>	}
1150	>
1151	>	public static class TrackedSmallRunnable implements Runnable {
1152	>	public volatile boolean done = false;
1153	>	public void run() {
1154	>	try {
1155	>	delay(SMALL_DELAY_MS);
1156	>	done = true;
1157	>	} catch (InterruptedException ok) {}
1158		}
1159		}
1160
1161	<	static class TrackedCallable implements Callable {
1162	<	volatile boolean done = false;
1161	>	public static class TrackedMediumRunnable implements Runnable {
1162	>	public volatile boolean done = false;
1163	>	public void run() {
1164	>	try {
1165	>	delay(MEDIUM_DELAY_MS);
1166	>	done = true;
1167	>	} catch (InterruptedException ok) {}
1168	>	}
1169	>	}
1170	>
1171	>	public static class TrackedLongRunnable implements Runnable {
1172	>	public volatile boolean done = false;
1173	>	public void run() {
1174	>	try {
1175	>	delay(LONG_DELAY_MS);
1176	>	done = true;
1177	>	} catch (InterruptedException ok) {}
1178	>	}
1179	>	}
1180	>
1181	>	public static class TrackedNoOpRunnable implements Runnable {
1182	>	public volatile boolean done = false;
1183	>	public void run() {
1184	>	done = true;
1185	>	}
1186	>	}
1187	>
1188	>	public static class TrackedCallable implements Callable {
1189	>	public volatile boolean done = false;
1190		public Object call() {
1191		try {
1192	<	Thread.sleep(SMALL_DELAY_MS);
1192	>	delay(SMALL_DELAY_MS);
1193		done = true;
1194	<	} catch(Exception e){
361	<	}
1194	>	} catch (InterruptedException ok) {}
1195		return Boolean.TRUE;
1196		}
1197		}
1198
1199		/**
1200	+	* Analog of CheckedRunnable for RecursiveAction
1201	+	*/
1202	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1203	+	protected abstract void realCompute() throws Throwable;
1204	+
1205	+	public final void compute() {
1206	+	try {
1207	+	realCompute();
1208	+	} catch (Throwable t) {
1209	+	threadUnexpectedException(t);
1210	+	}
1211	+	}
1212	+	}
1213	+
1214	+	/**
1215	+	* Analog of CheckedCallable for RecursiveTask
1216	+	*/
1217	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1218	+	protected abstract T realCompute() throws Throwable;
1219	+
1220	+	public final T compute() {
1221	+	try {
1222	+	return realCompute();
1223	+	} catch (Throwable t) {
1224	+	threadUnexpectedException(t);
1225	+	return null;
1226	+	}
1227	+	}
1228	+	}
1229	+
1230	+	/**
1231		* For use as RejectedExecutionHandler in constructors
1232		*/
1233	<	static class NoOpREHandler implements RejectedExecutionHandler{
1234	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1233	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1234	>	public void rejectedExecution(Runnable r,
1235	>	ThreadPoolExecutor executor) {}
1236	>	}
1237	>
1238	>	/**
1239	>	* A CyclicBarrier that uses timed await and fails with
1240	>	* AssertionFailedErrors instead of throwing checked exceptions.
1241	>	*/
1242	>	public class CheckedBarrier extends CyclicBarrier {
1243	>	public CheckedBarrier(int parties) { super(parties); }
1244	>
1245	>	public int await() {
1246	>	try {
1247	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1248	>	} catch (TimeoutException e) {
1249	>	throw new AssertionFailedError("timed out");
1250	>	} catch (Exception e) {
1251	>	AssertionFailedError afe =
1252	>	new AssertionFailedError("Unexpected exception: " + e);
1253	>	afe.initCause(e);
1254	>	throw afe;
1255	>	}
1256	>	}
1257	>	}
1258	>
1259	>	void checkEmpty(BlockingQueue q) {
1260	>	try {
1261	>	assertTrue(q.isEmpty());
1262	>	assertEquals(0, q.size());
1263	>	assertNull(q.peek());
1264	>	assertNull(q.poll());
1265	>	assertNull(q.poll(0, MILLISECONDS));
1266	>	assertEquals(q.toString(), "[]");
1267	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1268	>	assertFalse(q.iterator().hasNext());
1269	>	try {
1270	>	q.element();
1271	>	shouldThrow();
1272	>	} catch (NoSuchElementException success) {}
1273	>	try {
1274	>	q.iterator().next();
1275	>	shouldThrow();
1276	>	} catch (NoSuchElementException success) {}
1277	>	try {
1278	>	q.remove();
1279	>	shouldThrow();
1280	>	} catch (NoSuchElementException success) {}
1281	>	} catch (InterruptedException ie) {
1282	>	threadUnexpectedException(ie);
1283	>	}
1284	>	}
1285	>
1286	>	void assertSerialEquals(Object x, Object y) {
1287	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1288	>	}
1289	>
1290	>	void assertNotSerialEquals(Object x, Object y) {
1291	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1292	>	}
1293	>
1294	>	byte[] serialBytes(Object o) {
1295	>	try {
1296	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1297	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1298	>	oos.writeObject(o);
1299	>	oos.flush();
1300	>	oos.close();
1301	>	return bos.toByteArray();
1302	>	} catch (Throwable t) {
1303	>	threadUnexpectedException(t);
1304	>	return new byte[0];
1305	>	}
1306	>	}
1307	>
1308	>	@SuppressWarnings("unchecked")
1309	>	<T> T serialClone(T o) {
1310	>	try {
1311	>	ObjectInputStream ois = new ObjectInputStream
1312	>	(new ByteArrayInputStream(serialBytes(o)));
1313	>	T clone = (T) ois.readObject();
1314	>	assertSame(o.getClass(), clone.getClass());
1315	>	return clone;
1316	>	} catch (Throwable t) {
1317	>	threadUnexpectedException(t);
1318	>	return null;
1319	>	}
1320		}
372	–
373	–
1321		}

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