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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.36 by jsr166, Mon Aug 3 22:08:45 2009 UTC vs.
Revision 1.157 by jsr166, Sat Oct 3 22:20:05 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
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.*;
11	–	import java.util.concurrent.*;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	<	import java.io.*;
11	<	import java.security.*;
10	>	import static java.util.concurrent.TimeUnit.MINUTES;
11	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
12	>
13	>	import java.io.ByteArrayInputStream;
14	>	import java.io.ByteArrayOutputStream;
15	>	import java.io.ObjectInputStream;
16	>	import java.io.ObjectOutputStream;
17	>	import java.lang.management.ManagementFactory;
18	>	import java.lang.management.ThreadInfo;
19	>	import java.lang.management.ThreadMXBean;
20	>	import java.lang.reflect.Constructor;
21	>	import java.lang.reflect.Method;
22	>	import java.lang.reflect.Modifier;
23	>	import java.security.CodeSource;
24	>	import java.security.Permission;
25	>	import java.security.PermissionCollection;
26	>	import java.security.Permissions;
27	>	import java.security.Policy;
28	>	import java.security.ProtectionDomain;
29	>	import java.security.SecurityPermission;
30	>	import java.util.ArrayList;
31	>	import java.util.Arrays;
32	>	import java.util.Date;
33	>	import java.util.Enumeration;
34	>	import java.util.Iterator;
35	>	import java.util.List;
36	>	import java.util.NoSuchElementException;
37	>	import java.util.PropertyPermission;
38	>	import java.util.concurrent.BlockingQueue;
39	>	import java.util.concurrent.Callable;
40	>	import java.util.concurrent.CountDownLatch;
41	>	import java.util.concurrent.CyclicBarrier;
42	>	import java.util.concurrent.ExecutionException;
43	>	import java.util.concurrent.Executors;
44	>	import java.util.concurrent.ExecutorService;
45	>	import java.util.concurrent.ForkJoinPool;
46	>	import java.util.concurrent.Future;
47	>	import java.util.concurrent.RecursiveAction;
48	>	import java.util.concurrent.RecursiveTask;
49	>	import java.util.concurrent.RejectedExecutionHandler;
50	>	import java.util.concurrent.Semaphore;
51	>	import java.util.concurrent.ThreadFactory;
52	>	import java.util.concurrent.ThreadPoolExecutor;
53	>	import java.util.concurrent.TimeoutException;
54	>	import java.util.concurrent.atomic.AtomicReference;
55	>	import java.util.regex.Pattern;
56	>
57	>	import junit.framework.AssertionFailedError;
58	>	import junit.framework.Test;
59	>	import junit.framework.TestCase;
60	>	import junit.framework.TestResult;
61	>	import junit.framework.TestSuite;
62
63		/**
64		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 23 | Line 70 | import java.security.*;
70		*
71		* <ol>
72		*
73	<	* <li> All assertions in code running in generated threads must use
73	>	* <li>All assertions in code running in generated threads must use
74		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
75		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
76	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
76	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
77		* particularly recommended) for other code to use these forms too.
78		* Only the most typically used JUnit assertion methods are defined
79	<	* this way, but enough to live with.</li>
79	>	* this way, but enough to live with.
80		*
81	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
82	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
81	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
82	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
83		* them. These methods are used to clear and check for thread
84	<	* assertion failures.</li>
84	>	* assertion failures.
85		*
86	<	* <li>All delays and timeouts must use one of the constants <tt>
87	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
88	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
86	>	* <li>All delays and timeouts must use one of the constants {@code
87	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
88	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
89		* discriminable from zero time, and always allows enough time for the
90		* small amounts of computation (creating a thread, calling a few
91		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
92		* is always discriminable as larger than SHORT and smaller than
93		* MEDIUM.  And so on. These constants are set to conservative values,
94		* but even so, if there is ever any doubt, they can all be increased
95	<	* in one spot to rerun tests on slower platforms.</li>
95	>	* in one spot to rerun tests on slower platforms.
96		*
97	<	* <li> All threads generated must be joined inside each test case
98	<	* method (or <tt>fail</tt> to do so) before returning from the
99	<	* method. The <tt> joinPool</tt> method can be used to do this when
100	<	* using Executors.</li>
97	>	* <li>All threads generated must be joined inside each test case
98	>	* method (or {@code fail} to do so) before returning from the
99	>	* method. The {@code joinPool} method can be used to do this when
100	>	* using Executors.
101		*
102		* </ol>
103		*
104	<	* <p> <b>Other notes</b>
104	>	* <p><b>Other notes</b>
105		* <ul>
106		*
107	<	* <li> Usually, there is one testcase method per JSR166 method
107	>	* <li>Usually, there is one testcase method per JSR166 method
108		* covering "normal" operation, and then as many exception-testing
109		* methods as there are exceptions the method can throw. Sometimes
110		* there are multiple tests per JSR166 method when the different
111		* "normal" behaviors differ significantly. And sometimes testcases
112		* cover multiple methods when they cannot be tested in
113	<	* isolation.</li>
113	>	* isolation.
114		*
115	<	* <li> The documentation style for testcases is to provide as javadoc
115	>	* <li>The documentation style for testcases is to provide as javadoc
116		* a simple sentence or two describing the property that the testcase
117		* method purports to test. The javadocs do not say anything about how
118	<	* the property is tested. To find out, read the code.</li>
118	>	* the property is tested. To find out, read the code.
119		*
120	<	* <li> These tests are "conformance tests", and do not attempt to
120	>	* <li>These tests are "conformance tests", and do not attempt to
121		* test throughput, latency, scalability or other performance factors
122		* (see the separate "jtreg" tests for a set intended to check these
123		* for the most central aspects of functionality.) So, most tests use
124		* the smallest sensible numbers of threads, collection sizes, etc
125	<	* needed to check basic conformance.</li>
125	>	* needed to check basic conformance.
126		*
127		* <li>The test classes currently do not declare inclusion in
128		* any particular package to simplify things for people integrating
129	<	* them in TCK test suites.</li>
129	>	* them in TCK test suites.
130		*
131	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
132	<	* runs all JSR166 unit tests.</li>
131	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
132	>	* runs all JSR166 unit tests.
133		*
134		* </ul>
135		*/
136		public class JSR166TestCase extends TestCase {
137	+	private static final boolean useSecurityManager =
138	+	Boolean.getBoolean("jsr166.useSecurityManager");
139	+
140	+	protected static final boolean expensiveTests =
141	+	Boolean.getBoolean("jsr166.expensiveTests");
142	+
143		/**
144	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
144	>	* If true, also run tests that are not part of the official tck
145	>	* because they test unspecified implementation details.
146		*/
147	<	public static void main (String[] args) {
148	<	int iters = 1;
149	<	if (args.length > 0)
150	<	iters = Integer.parseInt(args[0]);
151	<	Test s = suite();
152	<	for (int i = 0; i < iters; ++i) {
153	<	junit.textui.TestRunner.run (s);
154	<	System.gc();
155	<	System.runFinalization();
147	>	protected static final boolean testImplementationDetails =
148	>	Boolean.getBoolean("jsr166.testImplementationDetails");
149	>
150	>	/**
151	>	* If true, report on stdout all "slow" tests, that is, ones that
152	>	* take more than profileThreshold milliseconds to execute.
153	>	*/
154	>	private static final boolean profileTests =
155	>	Boolean.getBoolean("jsr166.profileTests");
156	>
157	>	/**
158	>	* The number of milliseconds that tests are permitted for
159	>	* execution without being reported, when profileTests is set.
160	>	*/
161	>	private static final long profileThreshold =
162	>	Long.getLong("jsr166.profileThreshold", 100);
163	>
164	>	/**
165	>	* The number of repetitions per test (for tickling rare bugs).
166	>	*/
167	>	private static final int runsPerTest =
168	>	Integer.getInteger("jsr166.runsPerTest", 1);
169	>
170	>	/**
171	>	* The number of repetitions of the test suite (for finding leaks?).
172	>	*/
173	>	private static final int suiteRuns =
174	>	Integer.getInteger("jsr166.suiteRuns", 1);
175	>
176	>	public JSR166TestCase() { super(); }
177	>	public JSR166TestCase(String name) { super(name); }
178	>
179	>	/**
180	>	* A filter for tests to run, matching strings of the form
181	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
182	>	* Usefully combined with jsr166.runsPerTest.
183	>	*/
184	>	private static final Pattern methodFilter = methodFilter();
185	>
186	>	private static Pattern methodFilter() {
187	>	String regex = System.getProperty("jsr166.methodFilter");
188	>	return (regex == null) ? null : Pattern.compile(regex);
189	>	}
190	>
191	>	static volatile TestCase currentTestCase;
192	>	static {
193	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
194	>	// avoid spurious reports with enormous runsPerTest
195	>	final int timeoutMinutes = Math.max(runsPerTest / 10, 1);
196	>	for (TestCase lastTestCase = currentTestCase;;) {
197	>	try { MINUTES.sleep(timeoutMinutes); }
198	>	catch (InterruptedException unexpected) { break; }
199	>	if (lastTestCase == currentTestCase) {
200	>	System.err.println
201	>	("Looks like we're stuck running test: "
202	>	+ lastTestCase);
203	>	dumpTestThreads();
204	>	}
205	>	lastTestCase = currentTestCase;
206	>	}}};
207	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
208	>	thread.setDaemon(true);
209	>	thread.start();
210	>	}
211	>
212	>	public void runBare() throws Throwable {
213	>	currentTestCase = this;
214	>	if (methodFilter == null
215	>	|| methodFilter.matcher(toString()).find())
216	>	super.runBare();
217	>	}
218	>
219	>	protected void runTest() throws Throwable {
220	>	for (int i = 0; i < runsPerTest; i++) {
221	>	if (profileTests)
222	>	runTestProfiled();
223	>	else
224	>	super.runTest();
225	>	}
226	>	}
227	>
228	>	protected void runTestProfiled() throws Throwable {
229	>	for (int i = 0; i < 2; i++) {
230	>	long startTime = System.nanoTime();
231	>	super.runTest();
232	>	long elapsedMillis = millisElapsedSince(startTime);
233	>	if (elapsedMillis < profileThreshold)
234	>	break;
235	>	// Never report first run of any test; treat it as a
236	>	// warmup run, notably to trigger all needed classloading,
237	>	if (i > 0)
238	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
239		}
103	–	System.exit(0);
240		}
241
242		/**
243	<	* Collects all JSR166 unit tests as one suite
243	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
244		*/
245	<	public static Test suite ( ) {
246	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
245	>	public static void main(String[] args) {
246	>	main(suite(), args);
247	>	}
248
249	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
250	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
251	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
252	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
253	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
254	<	suite.addTest(new TestSuite(PhaserTest.class));
255	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
256	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
257	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
258	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
259	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
260	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
261	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
262	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
263	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
264	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
265	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
266	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
130	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
131	<	suite.addTest(new TestSuite(AtomicLongTest.class));
132	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
133	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
134	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
135	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
136	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
137	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
138	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
139	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
140	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
141	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
142	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
143	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
144	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
145	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
146	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
147	<	suite.addTest(new TestSuite(DelayQueueTest.class));
148	<	suite.addTest(new TestSuite(EntryTest.class));
149	<	suite.addTest(new TestSuite(ExchangerTest.class));
150	<	suite.addTest(new TestSuite(ExecutorsTest.class));
151	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
152	<	suite.addTest(new TestSuite(FutureTaskTest.class));
153	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
154	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
155	<	suite.addTest(new TestSuite(LinkedListTest.class));
156	<	suite.addTest(new TestSuite(LockSupportTest.class));
157	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
158	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
159	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
160	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
161	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
162	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
163	<	suite.addTest(new TestSuite(SemaphoreTest.class));
164	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
165	<	suite.addTest(new TestSuite(SystemTest.class));
166	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
167	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
168	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
169	<	suite.addTest(new TestSuite(ThreadTest.class));
170	<	suite.addTest(new TestSuite(TimeUnitTest.class));
171	<	suite.addTest(new TestSuite(TreeMapTest.class));
172	<	suite.addTest(new TestSuite(TreeSetTest.class));
173	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
174	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
249	>	/**
250	>	* Runs all unit tests in the given test suite.
251	>	* Actual behavior influenced by jsr166.* system properties.
252	>	*/
253	>	static void main(Test suite, String[] args) {
254	>	if (useSecurityManager) {
255	>	System.err.println("Setting a permissive security manager");
256	>	Policy.setPolicy(permissivePolicy());
257	>	System.setSecurityManager(new SecurityManager());
258	>	}
259	>	for (int i = 0; i < suiteRuns; i++) {
260	>	TestResult result = junit.textui.TestRunner.run(suite);
261	>	if (!result.wasSuccessful())
262	>	System.exit(1);
263	>	System.gc();
264	>	System.runFinalization();
265	>	}
266	>	}
267
268	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
269	+	TestSuite suite = new TestSuite();
270	+	for (Object suiteOrClass : suiteOrClasses) {
271	+	if (suiteOrClass instanceof TestSuite)
272	+	suite.addTest((TestSuite) suiteOrClass);
273	+	else if (suiteOrClass instanceof Class)
274	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
275	+	else
276	+	throw new ClassCastException("not a test suite or class");
277	+	}
278		return suite;
279		}
280
281	+	public static void addNamedTestClasses(TestSuite suite,
282	+	String... testClassNames) {
283	+	for (String testClassName : testClassNames) {
284	+	try {
285	+	Class<?> testClass = Class.forName(testClassName);
286	+	Method m = testClass.getDeclaredMethod("suite",
287	+	new Class<?>[0]);
288	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
289	+	} catch (Exception e) {
290	+	throw new Error("Missing test class", e);
291	+	}
292	+	}
293	+	}
294	+
295	+	public static final double JAVA_CLASS_VERSION;
296	+	public static final String JAVA_SPECIFICATION_VERSION;
297	+	static {
298	+	try {
299	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
300	+	new java.security.PrivilegedAction<Double>() {
301	+	public Double run() {
302	+	return Double.valueOf(System.getProperty("java.class.version"));}});
303	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
304	+	new java.security.PrivilegedAction<String>() {
305	+	public String run() {
306	+	return System.getProperty("java.specification.version");}});
307	+	} catch (Throwable t) {
308	+	throw new Error(t);
309	+	}
310	+	}
311	+
312	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
313	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
314	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
315	+	public static boolean atLeastJava9() {
316	+	return JAVA_CLASS_VERSION >= 53.0
317	+	// As of 2015-09, java9 still uses 52.0 class file version
318	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
319	+	}
320	+	public static boolean atLeastJava10() {
321	+	return JAVA_CLASS_VERSION >= 54.0
322	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
323	+	}
324	+
325	+	/**
326	+	* Collects all JSR166 unit tests as one suite.
327	+	*/
328	+	public static Test suite() {
329	+	// Java7+ test classes
330	+	TestSuite suite = newTestSuite(
331	+	ForkJoinPoolTest.suite(),
332	+	ForkJoinTaskTest.suite(),
333	+	RecursiveActionTest.suite(),
334	+	RecursiveTaskTest.suite(),
335	+	LinkedTransferQueueTest.suite(),
336	+	PhaserTest.suite(),
337	+	ThreadLocalRandomTest.suite(),
338	+	AbstractExecutorServiceTest.suite(),
339	+	AbstractQueueTest.suite(),
340	+	AbstractQueuedSynchronizerTest.suite(),
341	+	AbstractQueuedLongSynchronizerTest.suite(),
342	+	ArrayBlockingQueueTest.suite(),
343	+	ArrayDequeTest.suite(),
344	+	AtomicBooleanTest.suite(),
345	+	AtomicIntegerArrayTest.suite(),
346	+	AtomicIntegerFieldUpdaterTest.suite(),
347	+	AtomicIntegerTest.suite(),
348	+	AtomicLongArrayTest.suite(),
349	+	AtomicLongFieldUpdaterTest.suite(),
350	+	AtomicLongTest.suite(),
351	+	AtomicMarkableReferenceTest.suite(),
352	+	AtomicReferenceArrayTest.suite(),
353	+	AtomicReferenceFieldUpdaterTest.suite(),
354	+	AtomicReferenceTest.suite(),
355	+	AtomicStampedReferenceTest.suite(),
356	+	ConcurrentHashMapTest.suite(),
357	+	ConcurrentLinkedDequeTest.suite(),
358	+	ConcurrentLinkedQueueTest.suite(),
359	+	ConcurrentSkipListMapTest.suite(),
360	+	ConcurrentSkipListSubMapTest.suite(),
361	+	ConcurrentSkipListSetTest.suite(),
362	+	ConcurrentSkipListSubSetTest.suite(),
363	+	CopyOnWriteArrayListTest.suite(),
364	+	CopyOnWriteArraySetTest.suite(),
365	+	CountDownLatchTest.suite(),
366	+	CyclicBarrierTest.suite(),
367	+	DelayQueueTest.suite(),
368	+	EntryTest.suite(),
369	+	ExchangerTest.suite(),
370	+	ExecutorsTest.suite(),
371	+	ExecutorCompletionServiceTest.suite(),
372	+	FutureTaskTest.suite(),
373	+	LinkedBlockingDequeTest.suite(),
374	+	LinkedBlockingQueueTest.suite(),
375	+	LinkedListTest.suite(),
376	+	LockSupportTest.suite(),
377	+	PriorityBlockingQueueTest.suite(),
378	+	PriorityQueueTest.suite(),
379	+	ReentrantLockTest.suite(),
380	+	ReentrantReadWriteLockTest.suite(),
381	+	ScheduledExecutorTest.suite(),
382	+	ScheduledExecutorSubclassTest.suite(),
383	+	SemaphoreTest.suite(),
384	+	SynchronousQueueTest.suite(),
385	+	SystemTest.suite(),
386	+	ThreadLocalTest.suite(),
387	+	ThreadPoolExecutorTest.suite(),
388	+	ThreadPoolExecutorSubclassTest.suite(),
389	+	ThreadTest.suite(),
390	+	TimeUnitTest.suite(),
391	+	TreeMapTest.suite(),
392	+	TreeSetTest.suite(),
393	+	TreeSubMapTest.suite(),
394	+	TreeSubSetTest.suite());
395	+
396	+	// Java8+ test classes
397	+	if (atLeastJava8()) {
398	+	String[] java8TestClassNames = {
399	+	"Atomic8Test",
400	+	"CompletableFutureTest",
401	+	"ConcurrentHashMap8Test",
402	+	"CountedCompleterTest",
403	+	"DoubleAccumulatorTest",
404	+	"DoubleAdderTest",
405	+	"ForkJoinPool8Test",
406	+	"ForkJoinTask8Test",
407	+	"LongAccumulatorTest",
408	+	"LongAdderTest",
409	+	"SplittableRandomTest",
410	+	"StampedLockTest",
411	+	"SubmissionPublisherTest",
412	+	"ThreadLocalRandom8Test",
413	+	};
414	+	addNamedTestClasses(suite, java8TestClassNames);
415	+	}
416	+
417	+	// Java9+ test classes
418	+	if (atLeastJava9()) {
419	+	String[] java9TestClassNames = {
420	+	// Currently empty, but expecting varhandle tests
421	+	};
422	+	addNamedTestClasses(suite, java9TestClassNames);
423	+	}
424	+
425	+	return suite;
426	+	}
427	+
428	+	/** Returns list of junit-style test method names in given class. */
429	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
430	+	Method[] methods = testClass.getDeclaredMethods();
431	+	ArrayList<String> names = new ArrayList<String>(methods.length);
432	+	for (Method method : methods) {
433	+	if (method.getName().startsWith("test")
434	+	&& Modifier.isPublic(method.getModifiers())
435	+	// method.getParameterCount() requires jdk8+
436	+	&& method.getParameterTypes().length == 0) {
437	+	names.add(method.getName());
438	+	}
439	+	}
440	+	return names;
441	+	}
442	+
443	+	/**
444	+	* Returns junit-style testSuite for the given test class, but
445	+	* parameterized by passing extra data to each test.
446	+	*/
447	+	public static <ExtraData> Test parameterizedTestSuite
448	+	(Class<? extends JSR166TestCase> testClass,
449	+	Class<ExtraData> dataClass,
450	+	ExtraData data) {
451	+	try {
452	+	TestSuite suite = new TestSuite();
453	+	Constructor c =
454	+	testClass.getDeclaredConstructor(dataClass, String.class);
455	+	for (String methodName : testMethodNames(testClass))
456	+	suite.addTest((Test) c.newInstance(data, methodName));
457	+	return suite;
458	+	} catch (Exception e) {
459	+	throw new Error(e);
460	+	}
461	+	}
462	+
463	+	/**
464	+	* Returns junit-style testSuite for the jdk8 extension of the
465	+	* given test class, but parameterized by passing extra data to
466	+	* each test.  Uses reflection to allow compilation in jdk7.
467	+	*/
468	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
469	+	(Class<? extends JSR166TestCase> testClass,
470	+	Class<ExtraData> dataClass,
471	+	ExtraData data) {
472	+	if (atLeastJava8()) {
473	+	String name = testClass.getName();
474	+	String name8 = name.replaceAll("Test$", "8Test");
475	+	if (name.equals(name8)) throw new Error(name);
476	+	try {
477	+	return (Test)
478	+	Class.forName(name8)
479	+	.getMethod("testSuite", new Class[] { dataClass })
480	+	.invoke(null, data);
481	+	} catch (Exception e) {
482	+	throw new Error(e);
483	+	}
484	+	} else {
485	+	return new TestSuite();
486	+	}
487	+	}
488	+
489	+	// Delays for timing-dependent tests, in milliseconds.
490
491		public static long SHORT_DELAY_MS;
492		public static long SMALL_DELAY_MS;
493		public static long MEDIUM_DELAY_MS;
494		public static long LONG_DELAY_MS;
495
185	–
496		/**
497		* Returns the shortest timed delay. This could
498		* be reimplemented to use for example a Property.
#	Line 191 | Line 501 | public class JSR166TestCase extends Test
501		return 50;
502		}
503
194	–
504		/**
505		* Sets delays as multiples of SHORT_DELAY.
506		*/
507	<	protected  void setDelays() {
507	>	protected void setDelays() {
508		SHORT_DELAY_MS = getShortDelay();
509	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
509	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
510		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
511	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
511	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
512		}
513
514		/**
515	<	* Flag set true if any threadAssert methods fail
515	>	* Returns a timeout in milliseconds to be used in tests that
516	>	* verify that operations block or time out.
517		*/
518	<	volatile boolean threadFailed;
518	>	long timeoutMillis() {
519	>	return SHORT_DELAY_MS / 4;
520	>	}
521
522		/**
523	<	* Initializes test to indicate that no thread assertions have failed
523	>	* Returns a new Date instance representing a time at least
524	>	* delayMillis milliseconds in the future.
525		*/
526	+	Date delayedDate(long delayMillis) {
527	+	// Add 1 because currentTimeMillis is known to round into the past.
528	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
529	+	}
530	+
531	+	/**
532	+	* The first exception encountered if any threadAssertXXX method fails.
533	+	*/
534	+	private final AtomicReference<Throwable> threadFailure
535	+	= new AtomicReference<Throwable>(null);
536	+
537	+	/**
538	+	* Records an exception so that it can be rethrown later in the test
539	+	* harness thread, triggering a test case failure.  Only the first
540	+	* failure is recorded; subsequent calls to this method from within
541	+	* the same test have no effect.
542	+	*/
543	+	public void threadRecordFailure(Throwable t) {
544	+	dumpTestThreads();
545	+	threadFailure.compareAndSet(null, t);
546	+	}
547	+
548		public void setUp() {
549		setDelays();
550	<	threadFailed = false;
550	>	}
551	>
552	>	void tearDownFail(String format, Object... args) {
553	>	String msg = toString() + ": " + String.format(format, args);
554	>	System.err.println(msg);
555	>	dumpTestThreads();
556	>	throw new AssertionFailedError(msg);
557	>	}
558	>
559	>	/**
560	>	* Extra checks that get done for all test cases.
561	>	*
562	>	* Triggers test case failure if any thread assertions have failed,
563	>	* by rethrowing, in the test harness thread, any exception recorded
564	>	* earlier by threadRecordFailure.
565	>	*
566	>	* Triggers test case failure if interrupt status is set in the main thread.
567	>	*/
568	>	public void tearDown() throws Exception {
569	>	Throwable t = threadFailure.getAndSet(null);
570	>	if (t != null) {
571	>	if (t instanceof Error)
572	>	throw (Error) t;
573	>	else if (t instanceof RuntimeException)
574	>	throw (RuntimeException) t;
575	>	else if (t instanceof Exception)
576	>	throw (Exception) t;
577	>	else {
578	>	AssertionFailedError afe =
579	>	new AssertionFailedError(t.toString());
580	>	afe.initCause(t);
581	>	throw afe;
582	>	}
583	>	}
584	>
585	>	if (Thread.interrupted())
586	>	tearDownFail("interrupt status set in main thread");
587	>
588	>	checkForkJoinPoolThreadLeaks();
589		}
590
591		/**
592	<	* Triggers test case failure if any thread assertions have failed
592	>	* Finds missing try { ... } finally { joinPool(e); }
593		*/
594	<	public void tearDown() {
595	<	assertFalse(threadFailed);
594	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
595	>	Thread[] survivors = new Thread[7];
596	>	int count = Thread.enumerate(survivors);
597	>	for (int i = 0; i < count; i++) {
598	>	Thread thread = survivors[i];
599	>	String name = thread.getName();
600	>	if (name.startsWith("ForkJoinPool-")) {
601	>	// give thread some time to terminate
602	>	thread.join(LONG_DELAY_MS);
603	>	if (thread.isAlive())
604	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
605	>	thread);
606	>	}
607	>	}
608	>
609	>	if (!ForkJoinPool.commonPool()
610	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
611	>	tearDownFail("ForkJoin common pool thread stuck");
612		}
613
614		/**
615	<	* Fail, also setting status to indicate current testcase should fail
615	>	* Just like fail(reason), but additionally recording (using
616	>	* threadRecordFailure) any AssertionFailedError thrown, so that
617	>	* the current testcase will fail.
618		*/
619		public void threadFail(String reason) {
620	<	threadFailed = true;
621	<	fail(reason);
620	>	try {
621	>	fail(reason);
622	>	} catch (AssertionFailedError t) {
623	>	threadRecordFailure(t);
624	>	throw t;
625	>	}
626		}
627
628		/**
629	<	* If expression not true, set status to indicate current testcase
630	<	* should fail
629	>	* Just like assertTrue(b), but additionally recording (using
630	>	* threadRecordFailure) any AssertionFailedError thrown, so that
631	>	* the current testcase will fail.
632		*/
633		public void threadAssertTrue(boolean b) {
634	<	if (!b) {
239	<	threadFailed = true;
634	>	try {
635		assertTrue(b);
636	+	} catch (AssertionFailedError t) {
637	+	threadRecordFailure(t);
638	+	throw t;
639		}
640		}
641
642		/**
643	<	* If expression not false, set status to indicate current testcase
644	<	* should fail
643	>	* Just like assertFalse(b), but additionally recording (using
644	>	* threadRecordFailure) any AssertionFailedError thrown, so that
645	>	* the current testcase will fail.
646		*/
647		public void threadAssertFalse(boolean b) {
648	<	if (b) {
250	<	threadFailed = true;
648	>	try {
649		assertFalse(b);
650	+	} catch (AssertionFailedError t) {
651	+	threadRecordFailure(t);
652	+	throw t;
653		}
654		}
655
656		/**
657	<	* If argument not null, set status to indicate current testcase
658	<	* should fail
657	>	* Just like assertNull(x), but additionally recording (using
658	>	* threadRecordFailure) any AssertionFailedError thrown, so that
659	>	* the current testcase will fail.
660		*/
661		public void threadAssertNull(Object x) {
662	<	if (x != null) {
261	<	threadFailed = true;
662	>	try {
663		assertNull(x);
664	+	} catch (AssertionFailedError t) {
665	+	threadRecordFailure(t);
666	+	throw t;
667		}
668		}
669
670		/**
671	<	* If arguments not equal, set status to indicate current testcase
672	<	* should fail
671	>	* Just like assertEquals(x, y), but additionally recording (using
672	>	* threadRecordFailure) any AssertionFailedError thrown, so that
673	>	* the current testcase will fail.
674		*/
675		public void threadAssertEquals(long x, long y) {
676	<	if (x != y) {
272	<	threadFailed = true;
676	>	try {
677		assertEquals(x, y);
678	+	} catch (AssertionFailedError t) {
679	+	threadRecordFailure(t);
680	+	throw t;
681		}
682		}
683
684		/**
685	<	* If arguments not equal, set status to indicate current testcase
686	<	* should fail
685	>	* Just like assertEquals(x, y), but additionally recording (using
686	>	* threadRecordFailure) any AssertionFailedError thrown, so that
687	>	* the current testcase will fail.
688		*/
689		public void threadAssertEquals(Object x, Object y) {
690	<	if (x != y && (x == null || !x.equals(y))) {
283	<	threadFailed = true;
690	>	try {
691		assertEquals(x, y);
692	+	} catch (AssertionFailedError fail) {
693	+	threadRecordFailure(fail);
694	+	throw fail;
695	+	} catch (Throwable fail) {
696	+	threadUnexpectedException(fail);
697		}
698		}
699
700		/**
701	<	* threadFail with message "should throw exception"
701	>	* Just like assertSame(x, y), but additionally recording (using
702	>	* threadRecordFailure) any AssertionFailedError thrown, so that
703	>	* the current testcase will fail.
704		*/
705	<	public void threadShouldThrow() {
705	>	public void threadAssertSame(Object x, Object y) {
706		try {
707	<	threadFailed = true;
708	<	fail("should throw exception");
709	<	} catch (AssertionFailedError e) {
710	<	e.printStackTrace();
297	<	throw e;
707	>	assertSame(x, y);
708	>	} catch (AssertionFailedError fail) {
709	>	threadRecordFailure(fail);
710	>	throw fail;
711		}
712		}
713
714		/**
715	<	* threadFail with message "Unexpected exception"
715	>	* Calls threadFail with message "should throw exception".
716		*/
717	<	public void threadUnexpectedException() {
718	<	threadFailed = true;
306	<	fail("Unexpected exception");
717	>	public void threadShouldThrow() {
718	>	threadFail("should throw exception");
719		}
720
721		/**
722	<	* threadFail with message "Unexpected exception", with argument
722	>	* Calls threadFail with message "should throw" + exceptionName.
723		*/
724	<	public void threadUnexpectedException(Throwable ex) {
725	<	threadFailed = true;
726	<	ex.printStackTrace();
727	<	fail("Unexpected exception: " + ex);
724	>	public void threadShouldThrow(String exceptionName) {
725	>	threadFail("should throw " + exceptionName);
726	>	}
727	>
728	>	/**
729	>	* Records the given exception using {@link #threadRecordFailure},
730	>	* then rethrows the exception, wrapping it in an
731	>	* AssertionFailedError if necessary.
732	>	*/
733	>	public void threadUnexpectedException(Throwable t) {
734	>	threadRecordFailure(t);
735	>	t.printStackTrace();
736	>	if (t instanceof RuntimeException)
737	>	throw (RuntimeException) t;
738	>	else if (t instanceof Error)
739	>	throw (Error) t;
740	>	else {
741	>	AssertionFailedError afe =
742	>	new AssertionFailedError("unexpected exception: " + t);
743	>	afe.initCause(t);
744	>	throw afe;
745	>	}
746		}
747
748		/**
749	<	* Wait out termination of a thread pool or fail doing so
749	>	* Delays, via Thread.sleep, for the given millisecond delay, but
750	>	* if the sleep is shorter than specified, may re-sleep or yield
751	>	* until time elapses.
752		*/
753	<	public void joinPool(ExecutorService exec) {
753	>	static void delay(long millis) throws InterruptedException {
754	>	long startTime = System.nanoTime();
755	>	long ns = millis * 1000 * 1000;
756	>	for (;;) {
757	>	if (millis > 0L)
758	>	Thread.sleep(millis);
759	>	else // too short to sleep
760	>	Thread.yield();
761	>	long d = ns - (System.nanoTime() - startTime);
762	>	if (d > 0L)
763	>	millis = d / (1000 * 1000);
764	>	else
765	>	break;
766	>	}
767	>	}
768	>
769	>	/**
770	>	* Allows use of try-with-resources with per-test thread pools.
771	>	*/
772	>	static class PoolCloser<T extends ExecutorService>
773	>	implements AutoCloseable {
774	>	public final T pool;
775	>	public PoolCloser(T pool) { this.pool = pool; }
776	>	public void close() { joinPool(pool); }
777	>	}
778	>
779	>	/**
780	>	* Waits out termination of a thread pool or fails doing so.
781	>	*/
782	>	static void joinPool(ExecutorService pool) {
783		try {
784	<	exec.shutdown();
785	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
784	>	pool.shutdown();
785	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
786	>	fail("ExecutorService " + pool +
787	>	" did not terminate in a timely manner");
788		} catch (SecurityException ok) {
789		// Allowed in case test doesn't have privs
790	<	} catch (InterruptedException ie) {
791	<	fail("Unexpected exception");
790	>	} catch (InterruptedException fail) {
791	>	fail("Unexpected InterruptedException");
792		}
793		}
794
795	+	/** Like Runnable, but with the freedom to throw anything */
796	+	interface Action { public void run() throws Throwable; }
797
798		/**
799	<	* fail with message "should throw exception"
799	>	* Runs all the given actions in parallel, failing if any fail.
800	>	* Useful for running multiple variants of tests that are
801	>	* necessarily individually slow because they must block.
802		*/
803	<	public void shouldThrow() {
804	<	fail("Should throw exception");
803	>	void testInParallel(Action ... actions) {
804	>	try (PoolCloser<ExecutorService> poolCloser
805	>	= new PoolCloser<>(Executors.newCachedThreadPool())) {
806	>	ExecutorService pool = poolCloser.pool;
807	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
808	>	for (final Action action : actions)
809	>	futures.add(pool.submit(new CheckedRunnable() {
810	>	public void realRun() throws Throwable { action.run();}}));
811	>	for (Future<?> future : futures)
812	>	try {
813	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
814	>	} catch (ExecutionException ex) {
815	>	threadUnexpectedException(ex.getCause());
816	>	} catch (Exception ex) {
817	>	threadUnexpectedException(ex);
818	>	}
819	>	}
820		}
821
822		/**
823	<	* fail with message "Unexpected exception"
823	>	* A debugging tool to print stack traces of most threads, as jstack does.
824	>	* Uninteresting threads are filtered out.
825		*/
826	<	public void unexpectedException() {
827	<	fail("Unexpected exception");
826	>	static void dumpTestThreads() {
827	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
828	>	System.err.println("------ stacktrace dump start ------");
829	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
830	>	String name = info.getThreadName();
831	>	if ("Signal Dispatcher".equals(name))
832	>	continue;
833	>	if ("Reference Handler".equals(name)
834	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
835	>	continue;
836	>	if ("Finalizer".equals(name)
837	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
838	>	continue;
839	>	if ("checkForWedgedTest".equals(name))
840	>	continue;
841	>	System.err.print(info);
842	>	}
843	>	System.err.println("------ stacktrace dump end ------");
844		}
845
846		/**
847	<	* fail with message "Unexpected exception", with argument
847	>	* Checks that thread does not terminate within the default
848	>	* millisecond delay of {@code timeoutMillis()}.
849		*/
850	<	public void unexpectedException(Throwable ex) {
851	<	ex.printStackTrace();
352	<	fail("Unexpected exception: " + ex);
850	>	void assertThreadStaysAlive(Thread thread) {
851	>	assertThreadStaysAlive(thread, timeoutMillis());
852		}
853
854	+	/**
855	+	* Checks that thread does not terminate within the given millisecond delay.
856	+	*/
857	+	void assertThreadStaysAlive(Thread thread, long millis) {
858	+	try {
859	+	// No need to optimize the failing case via Thread.join.
860	+	delay(millis);
861	+	assertTrue(thread.isAlive());
862	+	} catch (InterruptedException fail) {
863	+	fail("Unexpected InterruptedException");
864	+	}
865	+	}
866	+
867	+	/**
868	+	* Checks that the threads do not terminate within the default
869	+	* millisecond delay of {@code timeoutMillis()}.
870	+	*/
871	+	void assertThreadsStayAlive(Thread... threads) {
872	+	assertThreadsStayAlive(timeoutMillis(), threads);
873	+	}
874	+
875	+	/**
876	+	* Checks that the threads do not terminate within the given millisecond delay.
877	+	*/
878	+	void assertThreadsStayAlive(long millis, Thread... threads) {
879	+	try {
880	+	// No need to optimize the failing case via Thread.join.
881	+	delay(millis);
882	+	for (Thread thread : threads)
883	+	assertTrue(thread.isAlive());
884	+	} catch (InterruptedException fail) {
885	+	fail("Unexpected InterruptedException");
886	+	}
887	+	}
888	+
889	+	/**
890	+	* Checks that future.get times out, with the default timeout of
891	+	* {@code timeoutMillis()}.
892	+	*/
893	+	void assertFutureTimesOut(Future future) {
894	+	assertFutureTimesOut(future, timeoutMillis());
895	+	}
896	+
897	+	/**
898	+	* Checks that future.get times out, with the given millisecond timeout.
899	+	*/
900	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
901	+	long startTime = System.nanoTime();
902	+	try {
903	+	future.get(timeoutMillis, MILLISECONDS);
904	+	shouldThrow();
905	+	} catch (TimeoutException success) {
906	+	} catch (Exception fail) {
907	+	threadUnexpectedException(fail);
908	+	} finally { future.cancel(true); }
909	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
910	+	}
911	+
912	+	/**
913	+	* Fails with message "should throw exception".
914	+	*/
915	+	public void shouldThrow() {
916	+	fail("Should throw exception");
917	+	}
918	+
919	+	/**
920	+	* Fails with message "should throw " + exceptionName.
921	+	*/
922	+	public void shouldThrow(String exceptionName) {
923	+	fail("Should throw " + exceptionName);
924	+	}
925
926		/**
927		* The number of elements to place in collections, arrays, etc.
928		*/
929	<	static final int SIZE = 20;
929	>	public static final int SIZE = 20;
930
931		// Some convenient Integer constants
932
933	<	static final Integer zero = new Integer(0);
934	<	static final Integer one = new Integer(1);
935	<	static final Integer two = new Integer(2);
936	<	static final Integer three  = new Integer(3);
937	<	static final Integer four  = new Integer(4);
938	<	static final Integer five  = new Integer(5);
939	<	static final Integer six = new Integer(6);
940	<	static final Integer seven = new Integer(7);
941	<	static final Integer eight = new Integer(8);
942	<	static final Integer nine = new Integer(9);
943	<	static final Integer m1  = new Integer(-1);
944	<	static final Integer m2  = new Integer(-2);
945	<	static final Integer m3  = new Integer(-3);
946	<	static final Integer m4 = new Integer(-4);
947	<	static final Integer m5 = new Integer(-5);
948	<	static final Integer m6 = new Integer(-6);
949	<	static final Integer m10 = new Integer(-10);
933	>	public static final Integer zero  = new Integer(0);
934	>	public static final Integer one   = new Integer(1);
935	>	public static final Integer two   = new Integer(2);
936	>	public static final Integer three = new Integer(3);
937	>	public static final Integer four  = new Integer(4);
938	>	public static final Integer five  = new Integer(5);
939	>	public static final Integer six   = new Integer(6);
940	>	public static final Integer seven = new Integer(7);
941	>	public static final Integer eight = new Integer(8);
942	>	public static final Integer nine  = new Integer(9);
943	>	public static final Integer m1  = new Integer(-1);
944	>	public static final Integer m2  = new Integer(-2);
945	>	public static final Integer m3  = new Integer(-3);
946	>	public static final Integer m4  = new Integer(-4);
947	>	public static final Integer m5  = new Integer(-5);
948	>	public static final Integer m6  = new Integer(-6);
949	>	public static final Integer m10 = new Integer(-10);
950	>
951	>	/**
952	>	* Runs Runnable r with a security policy that permits precisely
953	>	* the specified permissions.  If there is no current security
954	>	* manager, the runnable is run twice, both with and without a
955	>	* security manager.  We require that any security manager permit
956	>	* getPolicy/setPolicy.
957	>	*/
958	>	public void runWithPermissions(Runnable r, Permission... permissions) {
959	>	SecurityManager sm = System.getSecurityManager();
960	>	if (sm == null) {
961	>	r.run();
962	>	}
963	>	runWithSecurityManagerWithPermissions(r, permissions);
964	>	}
965
966	+	/**
967	+	* Runs Runnable r with a security policy that permits precisely
968	+	* the specified permissions.  If there is no current security
969	+	* manager, a temporary one is set for the duration of the
970	+	* Runnable.  We require that any security manager permit
971	+	* getPolicy/setPolicy.
972	+	*/
973	+	public void runWithSecurityManagerWithPermissions(Runnable r,
974	+	Permission... permissions) {
975	+	SecurityManager sm = System.getSecurityManager();
976	+	if (sm == null) {
977	+	Policy savedPolicy = Policy.getPolicy();
978	+	try {
979	+	Policy.setPolicy(permissivePolicy());
980	+	System.setSecurityManager(new SecurityManager());
981	+	runWithSecurityManagerWithPermissions(r, permissions);
982	+	} finally {
983	+	System.setSecurityManager(null);
984	+	Policy.setPolicy(savedPolicy);
985	+	}
986	+	} else {
987	+	Policy savedPolicy = Policy.getPolicy();
988	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
989	+	Policy.setPolicy(policy);
990	+
991	+	try {
992	+	r.run();
993	+	} finally {
994	+	policy.addPermission(new SecurityPermission("setPolicy"));
995	+	Policy.setPolicy(savedPolicy);
996	+	}
997	+	}
998	+	}
999	+
1000	+	/**
1001	+	* Runs a runnable without any permissions.
1002	+	*/
1003	+	public void runWithoutPermissions(Runnable r) {
1004	+	runWithPermissions(r);
1005	+	}
1006
1007		/**
1008		* A security policy where new permissions can be dynamically added
1009		* or all cleared.
1010		*/
1011	<	static class AdjustablePolicy extends java.security.Policy {
1011	>	public static class AdjustablePolicy extends java.security.Policy {
1012		Permissions perms = new Permissions();
1013	<	AdjustablePolicy() { }
1013	>	AdjustablePolicy(Permission... permissions) {
1014	>	for (Permission permission : permissions)
1015	>	perms.add(permission);
1016	>	}
1017		void addPermission(Permission perm) { perms.add(perm); }
1018		void clearPermissions() { perms = new Permissions(); }
1019	<	public PermissionCollection getPermissions(CodeSource cs) {
1020	<	return perms;
1021	<	}
1022	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1023	<	return perms;
1024	<	}
1025	<	public boolean implies(ProtectionDomain pd, Permission p) {
1026	<	return perms.implies(p);
1027	<	}
1028	<	public void refresh() {}
1019	>	public PermissionCollection getPermissions(CodeSource cs) {
1020	>	return perms;
1021	>	}
1022	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1023	>	return perms;
1024	>	}
1025	>	public boolean implies(ProtectionDomain pd, Permission p) {
1026	>	return perms.implies(p);
1027	>	}
1028	>	public void refresh() {}
1029	>	public String toString() {
1030	>	List<Permission> ps = new ArrayList<Permission>();
1031	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1032	>	ps.add(e.nextElement());
1033	>	return "AdjustablePolicy with permissions " + ps;
1034	>	}
1035	>	}
1036	>
1037	>	/**
1038	>	* Returns a policy containing all the permissions we ever need.
1039	>	*/
1040	>	public static Policy permissivePolicy() {
1041	>	return new AdjustablePolicy
1042	>	// Permissions j.u.c. needs directly
1043	>	(new RuntimePermission("modifyThread"),
1044	>	new RuntimePermission("getClassLoader"),
1045	>	new RuntimePermission("setContextClassLoader"),
1046	>	// Permissions needed to change permissions!
1047	>	new SecurityPermission("getPolicy"),
1048	>	new SecurityPermission("setPolicy"),
1049	>	new RuntimePermission("setSecurityManager"),
1050	>	// Permissions needed by the junit test harness
1051	>	new RuntimePermission("accessDeclaredMembers"),
1052	>	new PropertyPermission("*", "read"),
1053	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1054	>	}
1055	>
1056	>	/**
1057	>	* Sleeps until the given time has elapsed.
1058	>	* Throws AssertionFailedError if interrupted.
1059	>	*/
1060	>	void sleep(long millis) {
1061	>	try {
1062	>	delay(millis);
1063	>	} catch (InterruptedException fail) {
1064	>	AssertionFailedError afe =
1065	>	new AssertionFailedError("Unexpected InterruptedException");
1066	>	afe.initCause(fail);
1067	>	throw afe;
1068	>	}
1069		}
1070
1071	+	/**
1072	+	* Spin-waits up to the specified number of milliseconds for the given
1073	+	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1074	+	*/
1075	+	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1076	+	long startTime = System.nanoTime();
1077	+	for (;;) {
1078	+	Thread.State s = thread.getState();
1079	+	if (s == Thread.State.BLOCKED ||
1080	+	s == Thread.State.WAITING ||
1081	+	s == Thread.State.TIMED_WAITING)
1082	+	return;
1083	+	else if (s == Thread.State.TERMINATED)
1084	+	fail("Unexpected thread termination");
1085	+	else if (millisElapsedSince(startTime) > timeoutMillis) {
1086	+	threadAssertTrue(thread.isAlive());
1087	+	return;
1088	+	}
1089	+	Thread.yield();
1090	+	}
1091	+	}
1092	+
1093	+	/**
1094	+	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1095	+	* state: BLOCKED, WAITING, or TIMED_WAITING.
1096	+	*/
1097	+	void waitForThreadToEnterWaitState(Thread thread) {
1098	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1099	+	}
1100	+
1101	+	/**
1102	+	* Returns the number of milliseconds since time given by
1103	+	* startNanoTime, which must have been previously returned from a
1104	+	* call to {@link System#nanoTime()}.
1105	+	*/
1106	+	static long millisElapsedSince(long startNanoTime) {
1107	+	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1108	+	}
1109	+
1110	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1111	+	//         long startTime = System.nanoTime();
1112	+	//         try {
1113	+	//             r.run();
1114	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1115	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1116	+	//             throw new AssertionFailedError("did not return promptly");
1117	+	//     }
1118	+
1119	+	//     void assertTerminatesPromptly(Runnable r) {
1120	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1121	+	//     }
1122	+
1123	+	/**
1124	+	* Checks that timed f.get() returns the expected value, and does not
1125	+	* wait for the timeout to elapse before returning.
1126	+	*/
1127	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1128	+	long startTime = System.nanoTime();
1129	+	try {
1130	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1131	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1132	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1133	+	throw new AssertionFailedError("timed get did not return promptly");
1134	+	}
1135	+
1136	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1137	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1138	+	}
1139	+
1140	+	/**
1141	+	* Returns a new started daemon Thread running the given runnable.
1142	+	*/
1143	+	Thread newStartedThread(Runnable runnable) {
1144	+	Thread t = new Thread(runnable);
1145	+	t.setDaemon(true);
1146	+	t.start();
1147	+	return t;
1148	+	}
1149	+
1150	+	/**
1151	+	* Waits for the specified time (in milliseconds) for the thread
1152	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1153	+	* the thread (in the hope that it may terminate later) and fails.
1154	+	*/
1155	+	void awaitTermination(Thread t, long timeoutMillis) {
1156	+	try {
1157	+	t.join(timeoutMillis);
1158	+	} catch (InterruptedException fail) {
1159	+	threadUnexpectedException(fail);
1160	+	} finally {
1161	+	if (t.getState() != Thread.State.TERMINATED) {
1162	+	t.interrupt();
1163	+	fail("Test timed out");
1164	+	}
1165	+	}
1166	+	}
1167	+
1168	+	/**
1169	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1170	+	* terminate (using {@link Thread#join(long)}), else interrupts
1171	+	* the thread (in the hope that it may terminate later) and fails.
1172	+	*/
1173	+	void awaitTermination(Thread t) {
1174	+	awaitTermination(t, LONG_DELAY_MS);
1175	+	}
1176
1177		// Some convenient Runnable classes
1178
1179	<	abstract class CheckedRunnable implements Runnable {
1180	<	abstract void realRun() throws Throwable;
1179	>	public abstract class CheckedRunnable implements Runnable {
1180	>	protected abstract void realRun() throws Throwable;
1181
1182		public final void run() {
1183		try {
1184		realRun();
1185	+	} catch (Throwable fail) {
1186	+	threadUnexpectedException(fail);
1187	+	}
1188	+	}
1189	+	}
1190	+
1191	+	public abstract class RunnableShouldThrow implements Runnable {
1192	+	protected abstract void realRun() throws Throwable;
1193	+
1194	+	final Class<?> exceptionClass;
1195	+
1196	+	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1197	+	this.exceptionClass = exceptionClass;
1198	+	}
1199	+
1200	+	public final void run() {
1201	+	try {
1202	+	realRun();
1203	+	threadShouldThrow(exceptionClass.getSimpleName());
1204		} catch (Throwable t) {
1205	<	threadUnexpectedException(t);
1205	>	if (! exceptionClass.isInstance(t))
1206	>	threadUnexpectedException(t);
1207		}
1208		}
1209		}
1210
1211	<	abstract class CheckedInterruptedRunnable implements Runnable {
1212	<	abstract void realRun() throws Throwable;
1211	>	public abstract class ThreadShouldThrow extends Thread {
1212	>	protected abstract void realRun() throws Throwable;
1213	>
1214	>	final Class<?> exceptionClass;
1215	>
1216	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1217	>	this.exceptionClass = exceptionClass;
1218	>	}
1219
1220		public final void run() {
1221		try {
1222		realRun();
1223	<	threadShouldThrow();
425	<	} catch (InterruptedException success) {
1223	>	threadShouldThrow(exceptionClass.getSimpleName());
1224		} catch (Throwable t) {
1225	<	threadUnexpectedException(t);
1225	>	if (! exceptionClass.isInstance(t))
1226	>	threadUnexpectedException(t);
1227	>	}
1228	>	}
1229	>	}
1230	>
1231	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1232	>	protected abstract void realRun() throws Throwable;
1233	>
1234	>	public final void run() {
1235	>	try {
1236	>	realRun();
1237	>	threadShouldThrow("InterruptedException");
1238	>	} catch (InterruptedException success) {
1239	>	threadAssertFalse(Thread.interrupted());
1240	>	} catch (Throwable fail) {
1241	>	threadUnexpectedException(fail);
1242		}
1243		}
1244		}
1245
1246	<	abstract class CheckedCallable<T> implements Callable<T> {
1247	<	abstract T realCall() throws Throwable;
1246	>	public abstract class CheckedCallable<T> implements Callable<T> {
1247	>	protected abstract T realCall() throws Throwable;
1248
1249		public final T call() {
1250		try {
1251		return realCall();
1252	<	} catch (Throwable t) {
1253	<	threadUnexpectedException(t);
1252	>	} catch (Throwable fail) {
1253	>	threadUnexpectedException(fail);
1254		return null;
1255		}
1256		}
1257		}
1258
1259	<	static class NoOpRunnable implements Runnable {
1259	>	public abstract class CheckedInterruptedCallable<T>
1260	>	implements Callable<T> {
1261	>	protected abstract T realCall() throws Throwable;
1262	>
1263	>	public final T call() {
1264	>	try {
1265	>	T result = realCall();
1266	>	threadShouldThrow("InterruptedException");
1267	>	return result;
1268	>	} catch (InterruptedException success) {
1269	>	threadAssertFalse(Thread.interrupted());
1270	>	} catch (Throwable fail) {
1271	>	threadUnexpectedException(fail);
1272	>	}
1273	>	return null;
1274	>	}
1275	>	}
1276	>
1277	>	public static class NoOpRunnable implements Runnable {
1278		public void run() {}
1279		}
1280
1281	<	static class NoOpCallable implements Callable {
1281	>	public static class NoOpCallable implements Callable {
1282		public Object call() { return Boolean.TRUE; }
1283		}
1284
1285	<	static final String TEST_STRING = "a test string";
1285	>	public static final String TEST_STRING = "a test string";
1286	>
1287	>	public static class StringTask implements Callable<String> {
1288	>	final String value;
1289	>	public StringTask() { this(TEST_STRING); }
1290	>	public StringTask(String value) { this.value = value; }
1291	>	public String call() { return value; }
1292	>	}
1293	>
1294	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1295	>	return new CheckedCallable<String>() {
1296	>	protected String realCall() {
1297	>	try {
1298	>	latch.await();
1299	>	} catch (InterruptedException quittingTime) {}
1300	>	return TEST_STRING;
1301	>	}};
1302	>	}
1303
1304	<	static class StringTask implements Callable<String> {
1305	<	public String call() { return TEST_STRING; }
1304	>	public Runnable countDowner(final CountDownLatch latch) {
1305	>	return new CheckedRunnable() {
1306	>	public void realRun() throws InterruptedException {
1307	>	latch.countDown();
1308	>	}};
1309		}
1310
1311	<	static class NPETask implements Callable<String> {
1311	>	public Runnable awaiter(final CountDownLatch latch) {
1312	>	return new CheckedRunnable() {
1313	>	public void realRun() throws InterruptedException {
1314	>	await(latch);
1315	>	}};
1316	>	}
1317	>
1318	>	public void await(CountDownLatch latch) {
1319	>	try {
1320	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1321	>	} catch (Throwable fail) {
1322	>	threadUnexpectedException(fail);
1323	>	}
1324	>	}
1325	>
1326	>	public void await(Semaphore semaphore) {
1327	>	try {
1328	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1329	>	} catch (Throwable fail) {
1330	>	threadUnexpectedException(fail);
1331	>	}
1332	>	}
1333	>
1334	>	//     /**
1335	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1336	>	//      */
1337	>	//     public void await(AtomicBoolean flag) {
1338	>	//         await(flag, LONG_DELAY_MS);
1339	>	//     }
1340	>
1341	>	//     /**
1342	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1343	>	//      */
1344	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1345	>	//         long startTime = System.nanoTime();
1346	>	//         while (!flag.get()) {
1347	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1348	>	//                 throw new AssertionFailedError("timed out");
1349	>	//             Thread.yield();
1350	>	//         }
1351	>	//     }
1352	>
1353	>	public static class NPETask implements Callable<String> {
1354		public String call() { throw new NullPointerException(); }
1355		}
1356
1357	<	static class CallableOne implements Callable<Integer> {
1357	>	public static class CallableOne implements Callable<Integer> {
1358		public Integer call() { return one; }
1359		}
1360
1361	<	class ShortRunnable extends CheckedRunnable {
1362	<	void realRun() throws Throwable {
1363	<	Thread.sleep(SHORT_DELAY_MS);
1361	>	public class ShortRunnable extends CheckedRunnable {
1362	>	protected void realRun() throws Throwable {
1363	>	delay(SHORT_DELAY_MS);
1364		}
1365		}
1366
1367	<	class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1368	<	void realRun() throws InterruptedException {
1369	<	Thread.sleep(SHORT_DELAY_MS);
1367	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1368	>	protected void realRun() throws InterruptedException {
1369	>	delay(SHORT_DELAY_MS);
1370		}
1371		}
1372
1373	<	class SmallRunnable extends CheckedRunnable {
1374	<	void realRun() throws Throwable {
1375	<	Thread.sleep(SMALL_DELAY_MS);
1373	>	public class SmallRunnable extends CheckedRunnable {
1374	>	protected void realRun() throws Throwable {
1375	>	delay(SMALL_DELAY_MS);
1376		}
1377		}
1378
1379	<	class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1380	<	void realRun() {
1379	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1380	>	protected void realRun() {
1381		try {
1382	<	Thread.sleep(SMALL_DELAY_MS);
1383	<	}
490	<	catch (InterruptedException ok) {
491	<	}
1382	>	delay(SMALL_DELAY_MS);
1383	>	} catch (InterruptedException ok) {}
1384		}
1385		}
1386
1387	<	class SmallCallable extends CheckedCallable {
1388	<	Object realCall() throws Throwable {
1389	<	Thread.sleep(SMALL_DELAY_MS);
1387	>	public class SmallCallable extends CheckedCallable {
1388	>	protected Object realCall() throws InterruptedException {
1389	>	delay(SMALL_DELAY_MS);
1390		return Boolean.TRUE;
1391		}
1392		}
1393
1394	<	class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
1395	<	void realRun() throws InterruptedException {
1396	<	Thread.sleep(SMALL_DELAY_MS);
1394	>	public class MediumRunnable extends CheckedRunnable {
1395	>	protected void realRun() throws Throwable {
1396	>	delay(MEDIUM_DELAY_MS);
1397		}
1398		}
1399
1400	<	class MediumRunnable extends CheckedRunnable {
1401	<	void realRun() throws Throwable {
1402	<	Thread.sleep(MEDIUM_DELAY_MS);
1400	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1401	>	protected void realRun() throws InterruptedException {
1402	>	delay(MEDIUM_DELAY_MS);
1403		}
1404		}
1405
1406	<	class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1407	<	void realRun() throws InterruptedException {
1408	<	Thread.sleep(MEDIUM_DELAY_MS);
1409	<	}
1406	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1407	>	return new CheckedRunnable() {
1408	>	protected void realRun() {
1409	>	try {
1410	>	delay(timeoutMillis);
1411	>	} catch (InterruptedException ok) {}
1412	>	}};
1413		}
1414
1415	<	class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1416	<	void realRun() {
1415	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1416	>	protected void realRun() {
1417		try {
1418	<	Thread.sleep(MEDIUM_DELAY_MS);
1419	<	}
525	<	catch (InterruptedException ok) {
526	<	}
1418	>	delay(MEDIUM_DELAY_MS);
1419	>	} catch (InterruptedException ok) {}
1420		}
1421		}
1422
1423	<	class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1424	<	void realRun() {
1423	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1424	>	protected void realRun() {
1425		try {
1426	<	Thread.sleep(LONG_DELAY_MS);
1427	<	}
535	<	catch (InterruptedException ok) {
536	<	}
1426	>	delay(LONG_DELAY_MS);
1427	>	} catch (InterruptedException ok) {}
1428		}
1429		}
1430
1431		/**
1432		* For use as ThreadFactory in constructors
1433		*/
1434	<	static class SimpleThreadFactory implements ThreadFactory {
1434	>	public static class SimpleThreadFactory implements ThreadFactory {
1435		public Thread newThread(Runnable r) {
1436		return new Thread(r);
1437		}
1438		}
1439
1440	<	static class TrackedShortRunnable implements Runnable {
1441	<	volatile boolean done = false;
1440	>	public interface TrackedRunnable extends Runnable {
1441	>	boolean isDone();
1442	>	}
1443	>
1444	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1445	>	return new TrackedRunnable() {
1446	>	private volatile boolean done = false;
1447	>	public boolean isDone() { return done; }
1448	>	public void run() {
1449	>	try {
1450	>	delay(timeoutMillis);
1451	>	done = true;
1452	>	} catch (InterruptedException ok) {}
1453	>	}
1454	>	};
1455	>	}
1456	>
1457	>	public static class TrackedShortRunnable implements Runnable {
1458	>	public volatile boolean done = false;
1459	>	public void run() {
1460	>	try {
1461	>	delay(SHORT_DELAY_MS);
1462	>	done = true;
1463	>	} catch (InterruptedException ok) {}
1464	>	}
1465	>	}
1466	>
1467	>	public static class TrackedSmallRunnable implements Runnable {
1468	>	public volatile boolean done = false;
1469		public void run() {
1470		try {
1471	<	Thread.sleep(SMALL_DELAY_MS);
1471	>	delay(SMALL_DELAY_MS);
1472		done = true;
1473	<	} catch (Exception e) {
556	<	}
1473	>	} catch (InterruptedException ok) {}
1474		}
1475		}
1476
1477	<	static class TrackedMediumRunnable implements Runnable {
1478	<	volatile boolean done = false;
1477	>	public static class TrackedMediumRunnable implements Runnable {
1478	>	public volatile boolean done = false;
1479		public void run() {
1480		try {
1481	<	Thread.sleep(MEDIUM_DELAY_MS);
1481	>	delay(MEDIUM_DELAY_MS);
1482		done = true;
1483	<	} catch (Exception e) {
567	<	}
1483	>	} catch (InterruptedException ok) {}
1484		}
1485		}
1486
1487	<	static class TrackedLongRunnable implements Runnable {
1488	<	volatile boolean done = false;
1487	>	public static class TrackedLongRunnable implements Runnable {
1488	>	public volatile boolean done = false;
1489		public void run() {
1490		try {
1491	<	Thread.sleep(LONG_DELAY_MS);
1491	>	delay(LONG_DELAY_MS);
1492		done = true;
1493	<	} catch (Exception e) {
578	<	}
1493	>	} catch (InterruptedException ok) {}
1494		}
1495		}
1496
1497	<	static class TrackedNoOpRunnable implements Runnable {
1498	<	volatile boolean done = false;
1497	>	public static class TrackedNoOpRunnable implements Runnable {
1498	>	public volatile boolean done = false;
1499		public void run() {
1500		done = true;
1501		}
1502		}
1503
1504	<	static class TrackedCallable implements Callable {
1505	<	volatile boolean done = false;
1504	>	public static class TrackedCallable implements Callable {
1505	>	public volatile boolean done = false;
1506		public Object call() {
1507		try {
1508	<	Thread.sleep(SMALL_DELAY_MS);
1508	>	delay(SMALL_DELAY_MS);
1509		done = true;
1510	<	} catch (Exception e) {
596	<	}
1510	>	} catch (InterruptedException ok) {}
1511		return Boolean.TRUE;
1512		}
1513		}
1514
1515	+	/**
1516	+	* Analog of CheckedRunnable for RecursiveAction
1517	+	*/
1518	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1519	+	protected abstract void realCompute() throws Throwable;
1520	+
1521	+	@Override protected final void compute() {
1522	+	try {
1523	+	realCompute();
1524	+	} catch (Throwable fail) {
1525	+	threadUnexpectedException(fail);
1526	+	}
1527	+	}
1528	+	}
1529	+
1530	+	/**
1531	+	* Analog of CheckedCallable for RecursiveTask
1532	+	*/
1533	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1534	+	protected abstract T realCompute() throws Throwable;
1535	+
1536	+	@Override protected final T compute() {
1537	+	try {
1538	+	return realCompute();
1539	+	} catch (Throwable fail) {
1540	+	threadUnexpectedException(fail);
1541	+	return null;
1542	+	}
1543	+	}
1544	+	}
1545
1546		/**
1547		* For use as RejectedExecutionHandler in constructors
1548		*/
1549	<	static class NoOpREHandler implements RejectedExecutionHandler {
1549	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1550		public void rejectedExecution(Runnable r,
1551		ThreadPoolExecutor executor) {}
1552		}
1553
1554	+	/**
1555	+	* A CyclicBarrier that uses timed await and fails with
1556	+	* AssertionFailedErrors instead of throwing checked exceptions.
1557	+	*/
1558	+	public class CheckedBarrier extends CyclicBarrier {
1559	+	public CheckedBarrier(int parties) { super(parties); }
1560	+
1561	+	public int await() {
1562	+	try {
1563	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1564	+	} catch (TimeoutException timedOut) {
1565	+	throw new AssertionFailedError("timed out");
1566	+	} catch (Exception fail) {
1567	+	AssertionFailedError afe =
1568	+	new AssertionFailedError("Unexpected exception: " + fail);
1569	+	afe.initCause(fail);
1570	+	throw afe;
1571	+	}
1572	+	}
1573	+	}
1574	+
1575	+	void checkEmpty(BlockingQueue q) {
1576	+	try {
1577	+	assertTrue(q.isEmpty());
1578	+	assertEquals(0, q.size());
1579	+	assertNull(q.peek());
1580	+	assertNull(q.poll());
1581	+	assertNull(q.poll(0, MILLISECONDS));
1582	+	assertEquals(q.toString(), "[]");
1583	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1584	+	assertFalse(q.iterator().hasNext());
1585	+	try {
1586	+	q.element();
1587	+	shouldThrow();
1588	+	} catch (NoSuchElementException success) {}
1589	+	try {
1590	+	q.iterator().next();
1591	+	shouldThrow();
1592	+	} catch (NoSuchElementException success) {}
1593	+	try {
1594	+	q.remove();
1595	+	shouldThrow();
1596	+	} catch (NoSuchElementException success) {}
1597	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1598	+	}
1599	+
1600	+	void assertSerialEquals(Object x, Object y) {
1601	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1602	+	}
1603	+
1604	+	void assertNotSerialEquals(Object x, Object y) {
1605	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1606	+	}
1607	+
1608	+	byte[] serialBytes(Object o) {
1609	+	try {
1610	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1611	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1612	+	oos.writeObject(o);
1613	+	oos.flush();
1614	+	oos.close();
1615	+	return bos.toByteArray();
1616	+	} catch (Throwable fail) {
1617	+	threadUnexpectedException(fail);
1618	+	return new byte[0];
1619	+	}
1620	+	}
1621	+
1622	+	@SuppressWarnings("unchecked")
1623	+	<T> T serialClone(T o) {
1624	+	try {
1625	+	ObjectInputStream ois = new ObjectInputStream
1626	+	(new ByteArrayInputStream(serialBytes(o)));
1627	+	T clone = (T) ois.readObject();
1628	+	assertSame(o.getClass(), clone.getClass());
1629	+	return clone;
1630	+	} catch (Throwable fail) {
1631	+	threadUnexpectedException(fail);
1632	+	return null;
1633	+	}
1634	+	}
1635	+
1636	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1637	+	Runnable... throwingActions) {
1638	+	for (Runnable throwingAction : throwingActions) {
1639	+	boolean threw = false;
1640	+	try { throwingAction.run(); }
1641	+	catch (Throwable t) {
1642	+	threw = true;
1643	+	if (!expectedExceptionClass.isInstance(t)) {
1644	+	AssertionFailedError afe =
1645	+	new AssertionFailedError
1646	+	("Expected " + expectedExceptionClass.getName() +
1647	+	", got " + t.getClass().getName());
1648	+	afe.initCause(t);
1649	+	threadUnexpectedException(afe);
1650	+	}
1651	+	}
1652	+	if (!threw)
1653	+	shouldThrow(expectedExceptionClass.getName());
1654	+	}
1655	+	}
1656	+
1657	+	public void assertIteratorExhausted(Iterator<?> it) {
1658	+	try {
1659	+	it.next();
1660	+	shouldThrow();
1661	+	} catch (NoSuchElementException success) {}
1662	+	assertFalse(it.hasNext());
1663	+	}
1664		}

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