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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.12 by dl, Thu Dec 25 19:48:57 2003 UTC vs.
Revision 1.178 by jsr166, Fri Oct 23 17:34:47 2015 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.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
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.nio.file.Files;
24	>	import java.nio.file.Paths;
25	>	import java.security.CodeSource;
26	>	import java.security.Permission;
27	>	import java.security.PermissionCollection;
28	>	import java.security.Permissions;
29	>	import java.security.Policy;
30	>	import java.security.ProtectionDomain;
31	>	import java.security.SecurityPermission;
32	>	import java.util.ArrayList;
33	>	import java.util.Arrays;
34	>	import java.util.Date;
35	>	import java.util.Enumeration;
36	>	import java.util.Iterator;
37	>	import java.util.List;
38	>	import java.util.NoSuchElementException;
39	>	import java.util.PropertyPermission;
40	>	import java.util.concurrent.BlockingQueue;
41	>	import java.util.concurrent.Callable;
42	>	import java.util.concurrent.CountDownLatch;
43	>	import java.util.concurrent.CyclicBarrier;
44	>	import java.util.concurrent.ExecutionException;
45	>	import java.util.concurrent.Executors;
46	>	import java.util.concurrent.ExecutorService;
47	>	import java.util.concurrent.ForkJoinPool;
48	>	import java.util.concurrent.Future;
49	>	import java.util.concurrent.RecursiveAction;
50	>	import java.util.concurrent.RecursiveTask;
51	>	import java.util.concurrent.RejectedExecutionHandler;
52	>	import java.util.concurrent.Semaphore;
53	>	import java.util.concurrent.ThreadFactory;
54	>	import java.util.concurrent.ThreadPoolExecutor;
55	>	import java.util.concurrent.TimeoutException;
56	>	import java.util.concurrent.atomic.AtomicReference;
57	>	import java.util.regex.Matcher;
58	>	import java.util.regex.Pattern;
59	>
60	>	import junit.framework.AssertionFailedError;
61	>	import junit.framework.Test;
62	>	import junit.framework.TestCase;
63	>	import junit.framework.TestResult;
64	>	import junit.framework.TestSuite;
65
66		/**
67		* Base class for JSR166 Junit TCK tests.  Defines some constants,
68		* utility methods and classes, as well as a simple framework for
69		* helping to make sure that assertions failing in generated threads
70		* cause the associated test that generated them to itself fail (which
71	<	* JUnit doe not otherwise arrange).  The rules for creating such
71	>	* JUnit does not otherwise arrange).  The rules for creating such
72		* tests are:
73		*
74		* <ol>
75		*
76	<	* <li> All assertions in code running in generated threads must use
77	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
78	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
79	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
76	>	* <li>All assertions in code running in generated threads must use
77	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
78	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
79	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
80		* particularly recommended) for other code to use these forms too.
81		* Only the most typically used JUnit assertion methods are defined
82	<	* this way, but enough to live with.</li>
82	>	* this way, but enough to live with.
83		*
84	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
85	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
84	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
85	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
86		* them. These methods are used to clear and check for thread
87	<	* assertion failures.</li>
87	>	* assertion failures.
88		*
89	<	* <li>All delays and timeouts must use one of the constants <tt>
90	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
91	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
89	>	* <li>All delays and timeouts must use one of the constants {@code
90	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
91	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
92		* discriminable from zero time, and always allows enough time for the
93		* small amounts of computation (creating a thread, calling a few
94		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
95		* is always discriminable as larger than SHORT and smaller than
96		* MEDIUM.  And so on. These constants are set to conservative values,
97		* but even so, if there is ever any doubt, they can all be increased
98	<	* in one spot to rerun tests on slower platforms</li>
98	>	* in one spot to rerun tests on slower platforms.
99		*
100	<	* <li> All threads generated must be joined inside each test case
101	<	* method (or <tt>fail</tt> to do so) before returning from the
102	<	* method. The <tt> joinPool</tt> method can be used to do this when
103	<	* using Executors.</li>
100	>	* <li>All threads generated must be joined inside each test case
101	>	* method (or {@code fail} to do so) before returning from the
102	>	* method. The {@code joinPool} method can be used to do this when
103	>	* using Executors.
104		*
105		* </ol>
106		*
107	<	* <p> <b>Other notes</b>
107	>	* <p><b>Other notes</b>
108		* <ul>
109		*
110	<	* <li> Usually, there is one testcase method per JSR166 method
110	>	* <li>Usually, there is one testcase method per JSR166 method
111		* covering "normal" operation, and then as many exception-testing
112		* methods as there are exceptions the method can throw. Sometimes
113		* there are multiple tests per JSR166 method when the different
114		* "normal" behaviors differ significantly. And sometimes testcases
115		* cover multiple methods when they cannot be tested in
116	<	* isolation.</li>
117	<	*
118	<	* <li> The documentation style for testcases is to provide as javadoc
116	>	* isolation.
117	>	*
118	>	* <li>The documentation style for testcases is to provide as javadoc
119		* a simple sentence or two describing the property that the testcase
120		* method purports to test. The javadocs do not say anything about how
121	<	* the property is tested. To find out, read the code.</li>
121	>	* the property is tested. To find out, read the code.
122		*
123	<	* <li> These tests are "conformance tests", and do not attempt to
123	>	* <li>These tests are "conformance tests", and do not attempt to
124		* test throughput, latency, scalability or other performance factors
125		* (see the separate "jtreg" tests for a set intended to check these
126		* for the most central aspects of functionality.) So, most tests use
127		* the smallest sensible numbers of threads, collection sizes, etc
128	<	* needed to check basic conformance.</li>
128	>	* needed to check basic conformance.
129		*
130		* <li>The test classes currently do not declare inclusion in
131		* any particular package to simplify things for people integrating
132	<	* them in TCK test suites.</li>
132	>	* them in TCK test suites.
133		*
134	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
135	<	* runs all JSR166 unit tests.</li>
134	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
135	>	* runs all JSR166 unit tests.
136		*
137		* </ul>
138		*/
139		public class JSR166TestCase extends TestCase {
140	+	private static final boolean useSecurityManager =
141	+	Boolean.getBoolean("jsr166.useSecurityManager");
142	+
143	+	protected static final boolean expensiveTests =
144	+	Boolean.getBoolean("jsr166.expensiveTests");
145	+
146	+	/**
147	+	* If true, also run tests that are not part of the official tck
148	+	* because they test unspecified implementation details.
149	+	*/
150	+	protected static final boolean testImplementationDetails =
151	+	Boolean.getBoolean("jsr166.testImplementationDetails");
152	+
153	+	/**
154	+	* If true, report on stdout all "slow" tests, that is, ones that
155	+	* take more than profileThreshold milliseconds to execute.
156	+	*/
157	+	private static final boolean profileTests =
158	+	Boolean.getBoolean("jsr166.profileTests");
159	+
160	+	/**
161	+	* The number of milliseconds that tests are permitted for
162	+	* execution without being reported, when profileTests is set.
163	+	*/
164	+	private static final long profileThreshold =
165	+	Long.getLong("jsr166.profileThreshold", 100);
166	+
167	+	/**
168	+	* The number of repetitions per test (for tickling rare bugs).
169	+	*/
170	+	private static final int runsPerTest =
171	+	Integer.getInteger("jsr166.runsPerTest", 1);
172	+
173		/**
174	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
175	<	*/
176	<	public static void main (String[] args) {
177	<	junit.textui.TestRunner.run (suite());
174	>	* The number of repetitions of the test suite (for finding leaks?).
175	>	*/
176	>	private static final int suiteRuns =
177	>	Integer.getInteger("jsr166.suiteRuns", 1);
178	>
179	>	public JSR166TestCase() { super(); }
180	>	public JSR166TestCase(String name) { super(name); }
181	>
182	>	/**
183	>	* A filter for tests to run, matching strings of the form
184	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
185	>	* Usefully combined with jsr166.runsPerTest.
186	>	*/
187	>	private static final Pattern methodFilter = methodFilter();
188	>
189	>	private static Pattern methodFilter() {
190	>	String regex = System.getProperty("jsr166.methodFilter");
191	>	return (regex == null) ? null : Pattern.compile(regex);
192	>	}
193	>
194	>	// Instrumentation to debug very rare, but very annoying hung test runs.
195	>	static volatile TestCase currentTestCase;
196	>	// static volatile int currentRun = 0;
197	>	static {
198	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
199	>	// Avoid spurious reports with enormous runsPerTest.
200	>	// A single test case run should never take more than 1 second.
201	>	// But let's cap it at the high end too ...
202	>	final int timeoutMinutes =
203	>	Math.min(15, Math.max(runsPerTest / 60, 1));
204	>	for (TestCase lastTestCase = currentTestCase;;) {
205	>	try { MINUTES.sleep(timeoutMinutes); }
206	>	catch (InterruptedException unexpected) { break; }
207	>	if (lastTestCase == currentTestCase) {
208	>	System.err.printf(
209	>	"Looks like we're stuck running test: %s%n",
210	>	lastTestCase);
211	>	//                     System.err.printf(
212	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
213	>	//                         lastTestCase, currentRun, runsPerTest);
214	>	//                     System.err.println("availableProcessors=" +
215	>	//                         Runtime.getRuntime().availableProcessors());
216	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
217	>	dumpTestThreads();
218	>	// one stack dump is probably enough; more would be spam
219	>	break;
220	>	}
221	>	lastTestCase = currentTestCase;
222	>	}}};
223	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
224	>	thread.setDaemon(true);
225	>	thread.start();
226	>	}
227	>
228	>	//     public static String cpuModel() {
229	>	//         try {
230	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
231	>	//                 .matcher(new String(
232	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
233	>	//             matcher.find();
234	>	//             return matcher.group(1);
235	>	//         } catch (Exception ex) { return null; }
236	>	//     }
237	>
238	>	public void runBare() throws Throwable {
239	>	currentTestCase = this;
240	>	if (methodFilter == null
241	>	|| methodFilter.matcher(toString()).find())
242	>	super.runBare();
243	>	}
244	>
245	>	protected void runTest() throws Throwable {
246	>	for (int i = 0; i < runsPerTest; i++) {
247	>	// currentRun = i;
248	>	if (profileTests)
249	>	runTestProfiled();
250	>	else
251	>	super.runTest();
252	>	}
253	>	}
254	>
255	>	protected void runTestProfiled() throws Throwable {
256	>	for (int i = 0; i < 2; i++) {
257	>	long startTime = System.nanoTime();
258	>	super.runTest();
259	>	long elapsedMillis = millisElapsedSince(startTime);
260	>	if (elapsedMillis < profileThreshold)
261	>	break;
262	>	// Never report first run of any test; treat it as a
263	>	// warmup run, notably to trigger all needed classloading,
264	>	if (i > 0)
265	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
266	>	}
267		}
268
269		/**
270	<	* Collects all JSR166 unit tests as one suite
271	<	*/
272	<	public static Test suite ( ) {
273	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
274	<
275	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
276	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
277	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
278	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
279	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
280	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
281	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
282	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
283	<	suite.addTest(new TestSuite(AtomicLongTest.class));
284	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
285	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
286	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
287	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
288	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
289	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
290	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
291	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
292	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
293	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
294	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
295	<	suite.addTest(new TestSuite(DelayQueueTest.class));
296	<	suite.addTest(new TestSuite(ExchangerTest.class));
297	<	suite.addTest(new TestSuite(ExecutorsTest.class));
298	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
299	<	suite.addTest(new TestSuite(FutureTaskTest.class));
300	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
301	<	suite.addTest(new TestSuite(LinkedListTest.class));
302	<	suite.addTest(new TestSuite(LockSupportTest.class));
303	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
304	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
305	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
306	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
307	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
308	<	suite.addTest(new TestSuite(SemaphoreTest.class));
309	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
310	<	suite.addTest(new TestSuite(SystemTest.class));
311	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
312	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
313	<	suite.addTest(new TestSuite(ThreadTest.class));
314	<	suite.addTest(new TestSuite(TimeUnitTest.class));
315	<
270	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
271	>	*/
272	>	public static void main(String[] args) {
273	>	main(suite(), args);
274	>	}
275	>
276	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
277	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
278	>	long runTime;
279	>	public void startTest(Test test) {}
280	>	protected void printHeader(long runTime) {
281	>	this.runTime = runTime; // defer printing for later
282	>	}
283	>	protected void printFooter(TestResult result) {
284	>	if (result.wasSuccessful()) {
285	>	getWriter().println("OK (" + result.runCount() + " tests)"
286	>	+ "  Time: " + elapsedTimeAsString(runTime));
287	>	} else {
288	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
289	>	super.printFooter(result);
290	>	}
291	>	}
292	>	}
293	>
294	>	/**
295	>	* Returns a TestRunner that doesn't bother with unnecessary
296	>	* fluff, like printing a "." for each test case.
297	>	*/
298	>	static junit.textui.TestRunner newPithyTestRunner() {
299	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
300	>	runner.setPrinter(new PithyResultPrinter(System.out));
301	>	return runner;
302	>	}
303	>
304	>	/**
305	>	* Runs all unit tests in the given test suite.
306	>	* Actual behavior influenced by jsr166.* system properties.
307	>	*/
308	>	static void main(Test suite, String[] args) {
309	>	if (useSecurityManager) {
310	>	System.err.println("Setting a permissive security manager");
311	>	Policy.setPolicy(permissivePolicy());
312	>	System.setSecurityManager(new SecurityManager());
313	>	}
314	>	for (int i = 0; i < suiteRuns; i++) {
315	>	TestResult result = newPithyTestRunner().doRun(suite);
316	>	if (!result.wasSuccessful())
317	>	System.exit(1);
318	>	System.gc();
319	>	System.runFinalization();
320	>	}
321	>	}
322	>
323	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
324	>	TestSuite suite = new TestSuite();
325	>	for (Object suiteOrClass : suiteOrClasses) {
326	>	if (suiteOrClass instanceof TestSuite)
327	>	suite.addTest((TestSuite) suiteOrClass);
328	>	else if (suiteOrClass instanceof Class)
329	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
330	>	else
331	>	throw new ClassCastException("not a test suite or class");
332	>	}
333		return suite;
334		}
335
336	+	public static void addNamedTestClasses(TestSuite suite,
337	+	String... testClassNames) {
338	+	for (String testClassName : testClassNames) {
339	+	try {
340	+	Class<?> testClass = Class.forName(testClassName);
341	+	Method m = testClass.getDeclaredMethod("suite",
342	+	new Class<?>[0]);
343	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
344	+	} catch (Exception e) {
345	+	throw new Error("Missing test class", e);
346	+	}
347	+	}
348	+	}
349	+
350	+	public static final double JAVA_CLASS_VERSION;
351	+	public static final String JAVA_SPECIFICATION_VERSION;
352	+	static {
353	+	try {
354	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
355	+	new java.security.PrivilegedAction<Double>() {
356	+	public Double run() {
357	+	return Double.valueOf(System.getProperty("java.class.version"));}});
358	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
359	+	new java.security.PrivilegedAction<String>() {
360	+	public String run() {
361	+	return System.getProperty("java.specification.version");}});
362	+	} catch (Throwable t) {
363	+	throw new Error(t);
364	+	}
365	+	}
366	+
367	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
368	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
369	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
370	+	public static boolean atLeastJava9() {
371	+	return JAVA_CLASS_VERSION >= 53.0
372	+	// As of 2015-09, java9 still uses 52.0 class file version
373	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
374	+	}
375	+	public static boolean atLeastJava10() {
376	+	return JAVA_CLASS_VERSION >= 54.0
377	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
378	+	}
379	+
380	+	/**
381	+	* Collects all JSR166 unit tests as one suite.
382	+	*/
383	+	public static Test suite() {
384	+	// Java7+ test classes
385	+	TestSuite suite = newTestSuite(
386	+	ForkJoinPoolTest.suite(),
387	+	ForkJoinTaskTest.suite(),
388	+	RecursiveActionTest.suite(),
389	+	RecursiveTaskTest.suite(),
390	+	LinkedTransferQueueTest.suite(),
391	+	PhaserTest.suite(),
392	+	ThreadLocalRandomTest.suite(),
393	+	AbstractExecutorServiceTest.suite(),
394	+	AbstractQueueTest.suite(),
395	+	AbstractQueuedSynchronizerTest.suite(),
396	+	AbstractQueuedLongSynchronizerTest.suite(),
397	+	ArrayBlockingQueueTest.suite(),
398	+	ArrayDequeTest.suite(),
399	+	AtomicBooleanTest.suite(),
400	+	AtomicIntegerArrayTest.suite(),
401	+	AtomicIntegerFieldUpdaterTest.suite(),
402	+	AtomicIntegerTest.suite(),
403	+	AtomicLongArrayTest.suite(),
404	+	AtomicLongFieldUpdaterTest.suite(),
405	+	AtomicLongTest.suite(),
406	+	AtomicMarkableReferenceTest.suite(),
407	+	AtomicReferenceArrayTest.suite(),
408	+	AtomicReferenceFieldUpdaterTest.suite(),
409	+	AtomicReferenceTest.suite(),
410	+	AtomicStampedReferenceTest.suite(),
411	+	ConcurrentHashMapTest.suite(),
412	+	ConcurrentLinkedDequeTest.suite(),
413	+	ConcurrentLinkedQueueTest.suite(),
414	+	ConcurrentSkipListMapTest.suite(),
415	+	ConcurrentSkipListSubMapTest.suite(),
416	+	ConcurrentSkipListSetTest.suite(),
417	+	ConcurrentSkipListSubSetTest.suite(),
418	+	CopyOnWriteArrayListTest.suite(),
419	+	CopyOnWriteArraySetTest.suite(),
420	+	CountDownLatchTest.suite(),
421	+	CyclicBarrierTest.suite(),
422	+	DelayQueueTest.suite(),
423	+	EntryTest.suite(),
424	+	ExchangerTest.suite(),
425	+	ExecutorsTest.suite(),
426	+	ExecutorCompletionServiceTest.suite(),
427	+	FutureTaskTest.suite(),
428	+	LinkedBlockingDequeTest.suite(),
429	+	LinkedBlockingQueueTest.suite(),
430	+	LinkedListTest.suite(),
431	+	LockSupportTest.suite(),
432	+	PriorityBlockingQueueTest.suite(),
433	+	PriorityQueueTest.suite(),
434	+	ReentrantLockTest.suite(),
435	+	ReentrantReadWriteLockTest.suite(),
436	+	ScheduledExecutorTest.suite(),
437	+	ScheduledExecutorSubclassTest.suite(),
438	+	SemaphoreTest.suite(),
439	+	SynchronousQueueTest.suite(),
440	+	SystemTest.suite(),
441	+	ThreadLocalTest.suite(),
442	+	ThreadPoolExecutorTest.suite(),
443	+	ThreadPoolExecutorSubclassTest.suite(),
444	+	ThreadTest.suite(),
445	+	TimeUnitTest.suite(),
446	+	TreeMapTest.suite(),
447	+	TreeSetTest.suite(),
448	+	TreeSubMapTest.suite(),
449	+	TreeSubSetTest.suite());
450	+
451	+	// Java8+ test classes
452	+	if (atLeastJava8()) {
453	+	String[] java8TestClassNames = {
454	+	"Atomic8Test",
455	+	"CompletableFutureTest",
456	+	"ConcurrentHashMap8Test",
457	+	"CountedCompleterTest",
458	+	"DoubleAccumulatorTest",
459	+	"DoubleAdderTest",
460	+	"ForkJoinPool8Test",
461	+	"ForkJoinTask8Test",
462	+	"LongAccumulatorTest",
463	+	"LongAdderTest",
464	+	"SplittableRandomTest",
465	+	"StampedLockTest",
466	+	"SubmissionPublisherTest",
467	+	"ThreadLocalRandom8Test",
468	+	};
469	+	addNamedTestClasses(suite, java8TestClassNames);
470	+	}
471	+
472	+	// Java9+ test classes
473	+	if (atLeastJava9()) {
474	+	String[] java9TestClassNames = {
475	+	// Currently empty, but expecting varhandle tests
476	+	};
477	+	addNamedTestClasses(suite, java9TestClassNames);
478	+	}
479	+
480	+	return suite;
481	+	}
482	+
483	+	/** Returns list of junit-style test method names in given class. */
484	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
485	+	Method[] methods = testClass.getDeclaredMethods();
486	+	ArrayList<String> names = new ArrayList<String>(methods.length);
487	+	for (Method method : methods) {
488	+	if (method.getName().startsWith("test")
489	+	&& Modifier.isPublic(method.getModifiers())
490	+	// method.getParameterCount() requires jdk8+
491	+	&& method.getParameterTypes().length == 0) {
492	+	names.add(method.getName());
493	+	}
494	+	}
495	+	return names;
496	+	}
497	+
498	+	/**
499	+	* Returns junit-style testSuite for the given test class, but
500	+	* parameterized by passing extra data to each test.
501	+	*/
502	+	public static <ExtraData> Test parameterizedTestSuite
503	+	(Class<? extends JSR166TestCase> testClass,
504	+	Class<ExtraData> dataClass,
505	+	ExtraData data) {
506	+	try {
507	+	TestSuite suite = new TestSuite();
508	+	Constructor c =
509	+	testClass.getDeclaredConstructor(dataClass, String.class);
510	+	for (String methodName : testMethodNames(testClass))
511	+	suite.addTest((Test) c.newInstance(data, methodName));
512	+	return suite;
513	+	} catch (Exception e) {
514	+	throw new Error(e);
515	+	}
516	+	}
517	+
518	+	/**
519	+	* Returns junit-style testSuite for the jdk8 extension of the
520	+	* given test class, but parameterized by passing extra data to
521	+	* each test.  Uses reflection to allow compilation in jdk7.
522	+	*/
523	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
524	+	(Class<? extends JSR166TestCase> testClass,
525	+	Class<ExtraData> dataClass,
526	+	ExtraData data) {
527	+	if (atLeastJava8()) {
528	+	String name = testClass.getName();
529	+	String name8 = name.replaceAll("Test$", "8Test");
530	+	if (name.equals(name8)) throw new Error(name);
531	+	try {
532	+	return (Test)
533	+	Class.forName(name8)
534	+	.getMethod("testSuite", new Class[] { dataClass })
535	+	.invoke(null, data);
536	+	} catch (Exception e) {
537	+	throw new Error(e);
538	+	}
539	+	} else {
540	+	return new TestSuite();
541	+	}
542	+	}
543	+
544	+	// Delays for timing-dependent tests, in milliseconds.
545
546		public static long SHORT_DELAY_MS;
547		public static long SMALL_DELAY_MS;
548		public static long MEDIUM_DELAY_MS;
549		public static long LONG_DELAY_MS;
550
151	–
551		/**
552	<	* Return the shortest timed delay. This could
553	<	* be reimplmented to use for example a Property.
554	<	*/
552	>	* Returns the shortest timed delay. This could
553	>	* be reimplemented to use for example a Property.
554	>	*/
555		protected long getShortDelay() {
556	<	return 100;
556	>	return 50;
557		}
558
160	–
559		/**
560	<	* Set delays as multiples of SHORT_DELAY.
560	>	* Sets delays as multiples of SHORT_DELAY.
561		*/
562	<	protected  void setDelays() {
562	>	protected void setDelays() {
563		SHORT_DELAY_MS = getShortDelay();
564	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
564	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
565		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
566	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
566	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
567		}
568
569		/**
570	<	* Flag set true if any threadAssert methods fail
570	>	* Returns a timeout in milliseconds to be used in tests that
571	>	* verify that operations block or time out.
572		*/
573	<	volatile boolean threadFailed;
573	>	long timeoutMillis() {
574	>	return SHORT_DELAY_MS / 4;
575	>	}
576	>
577	>	/**
578	>	* Returns a new Date instance representing a time at least
579	>	* delayMillis milliseconds in the future.
580	>	*/
581	>	Date delayedDate(long delayMillis) {
582	>	// Add 1 because currentTimeMillis is known to round into the past.
583	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
584	>	}
585
586		/**
587	<	* Initialize test to indicate that no thread assertions have failed
587	>	* The first exception encountered if any threadAssertXXX method fails.
588		*/
589	<	public void setUp() {
589	>	private final AtomicReference<Throwable> threadFailure
590	>	= new AtomicReference<Throwable>(null);
591	>
592	>	/**
593	>	* Records an exception so that it can be rethrown later in the test
594	>	* harness thread, triggering a test case failure.  Only the first
595	>	* failure is recorded; subsequent calls to this method from within
596	>	* the same test have no effect.
597	>	*/
598	>	public void threadRecordFailure(Throwable t) {
599	>	System.err.println(t);
600	>	dumpTestThreads();
601	>	threadFailure.compareAndSet(null, t);
602	>	}
603	>
604	>	public void setUp() {
605		setDelays();
606	<	threadFailed = false;
606	>	}
607	>
608	>	void tearDownFail(String format, Object... args) {
609	>	String msg = toString() + ": " + String.format(format, args);
610	>	System.err.println(msg);
611	>	dumpTestThreads();
612	>	throw new AssertionFailedError(msg);
613	>	}
614	>
615	>	/**
616	>	* Extra checks that get done for all test cases.
617	>	*
618	>	* Triggers test case failure if any thread assertions have failed,
619	>	* by rethrowing, in the test harness thread, any exception recorded
620	>	* earlier by threadRecordFailure.
621	>	*
622	>	* Triggers test case failure if interrupt status is set in the main thread.
623	>	*/
624	>	public void tearDown() throws Exception {
625	>	Throwable t = threadFailure.getAndSet(null);
626	>	if (t != null) {
627	>	if (t instanceof Error)
628	>	throw (Error) t;
629	>	else if (t instanceof RuntimeException)
630	>	throw (RuntimeException) t;
631	>	else if (t instanceof Exception)
632	>	throw (Exception) t;
633	>	else {
634	>	AssertionFailedError afe =
635	>	new AssertionFailedError(t.toString());
636	>	afe.initCause(t);
637	>	throw afe;
638	>	}
639	>	}
640	>
641	>	if (Thread.interrupted())
642	>	tearDownFail("interrupt status set in main thread");
643	>
644	>	checkForkJoinPoolThreadLeaks();
645		}
646
647		/**
648	<	* Trigger test case failure if any thread assertions have failed
648	>	* Finds missing PoolCleaners
649		*/
650	<	public void tearDown() {
651	<	assertFalse(threadFailed);
650	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
651	>	Thread[] survivors = new Thread[7];
652	>	int count = Thread.enumerate(survivors);
653	>	for (int i = 0; i < count; i++) {
654	>	Thread thread = survivors[i];
655	>	String name = thread.getName();
656	>	if (name.startsWith("ForkJoinPool-")) {
657	>	// give thread some time to terminate
658	>	thread.join(LONG_DELAY_MS);
659	>	if (thread.isAlive())
660	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
661	>	thread);
662	>	}
663	>	}
664	>
665	>	if (!ForkJoinPool.commonPool()
666	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
667	>	tearDownFail("ForkJoin common pool thread stuck");
668		}
669
670		/**
671	<	* Fail, also setting status to indicate current testcase should fail
672	<	*/
671	>	* Just like fail(reason), but additionally recording (using
672	>	* threadRecordFailure) any AssertionFailedError thrown, so that
673	>	* the current testcase will fail.
674	>	*/
675		public void threadFail(String reason) {
676	<	threadFailed = true;
677	<	fail(reason);
676	>	try {
677	>	fail(reason);
678	>	} catch (AssertionFailedError t) {
679	>	threadRecordFailure(t);
680	>	throw t;
681	>	}
682		}
683
684		/**
685	<	* If expression not true, set status to indicate current testcase
686	<	* should fail
687	<	*/
685	>	* Just like assertTrue(b), but additionally recording (using
686	>	* threadRecordFailure) any AssertionFailedError thrown, so that
687	>	* the current testcase will fail.
688	>	*/
689		public void threadAssertTrue(boolean b) {
690	<	if (!b) {
205	<	threadFailed = true;
690	>	try {
691		assertTrue(b);
692	+	} catch (AssertionFailedError t) {
693	+	threadRecordFailure(t);
694	+	throw t;
695		}
696		}
697
698		/**
699	<	* If expression not false, set status to indicate current testcase
700	<	* should fail
701	<	*/
699	>	* Just like assertFalse(b), but additionally recording (using
700	>	* threadRecordFailure) any AssertionFailedError thrown, so that
701	>	* the current testcase will fail.
702	>	*/
703		public void threadAssertFalse(boolean b) {
704	<	if (b) {
216	<	threadFailed = true;
704	>	try {
705		assertFalse(b);
706	+	} catch (AssertionFailedError t) {
707	+	threadRecordFailure(t);
708	+	throw t;
709		}
710		}
711
712		/**
713	<	* If argument not null, set status to indicate current testcase
714	<	* should fail
715	<	*/
713	>	* Just like assertNull(x), but additionally recording (using
714	>	* threadRecordFailure) any AssertionFailedError thrown, so that
715	>	* the current testcase will fail.
716	>	*/
717		public void threadAssertNull(Object x) {
718	<	if (x != null) {
227	<	threadFailed = true;
718	>	try {
719		assertNull(x);
720	+	} catch (AssertionFailedError t) {
721	+	threadRecordFailure(t);
722	+	throw t;
723		}
724		}
725
726		/**
727	<	* If arguments not equal, set status to indicate current testcase
728	<	* should fail
729	<	*/
727	>	* Just like assertEquals(x, y), but additionally recording (using
728	>	* threadRecordFailure) any AssertionFailedError thrown, so that
729	>	* the current testcase will fail.
730	>	*/
731		public void threadAssertEquals(long x, long y) {
732	<	if (x != y) {
238	<	threadFailed = true;
732	>	try {
733		assertEquals(x, y);
734	+	} catch (AssertionFailedError t) {
735	+	threadRecordFailure(t);
736	+	throw t;
737		}
738		}
739
740		/**
741	<	* If arguments not equal, set status to indicate current testcase
742	<	* should fail
743	<	*/
741	>	* Just like assertEquals(x, y), but additionally recording (using
742	>	* threadRecordFailure) any AssertionFailedError thrown, so that
743	>	* the current testcase will fail.
744	>	*/
745		public void threadAssertEquals(Object x, Object y) {
746	<	if (x != y && (x == null || !x.equals(y))) {
249	<	threadFailed = true;
746	>	try {
747		assertEquals(x, y);
748	+	} catch (AssertionFailedError fail) {
749	+	threadRecordFailure(fail);
750	+	throw fail;
751	+	} catch (Throwable fail) {
752	+	threadUnexpectedException(fail);
753		}
754		}
755
756		/**
757	<	* threadFail with message "should throw exception"
758	<	*/
757	>	* Just like assertSame(x, y), but additionally recording (using
758	>	* threadRecordFailure) any AssertionFailedError thrown, so that
759	>	* the current testcase will fail.
760	>	*/
761	>	public void threadAssertSame(Object x, Object y) {
762	>	try {
763	>	assertSame(x, y);
764	>	} catch (AssertionFailedError fail) {
765	>	threadRecordFailure(fail);
766	>	throw fail;
767	>	}
768	>	}
769	>
770	>	/**
771	>	* Calls threadFail with message "should throw exception".
772	>	*/
773		public void threadShouldThrow() {
774	<	threadFailed = true;
775	<	fail("should throw exception");
774	>	threadFail("should throw exception");
775	>	}
776	>
777	>	/**
778	>	* Calls threadFail with message "should throw" + exceptionName.
779	>	*/
780	>	public void threadShouldThrow(String exceptionName) {
781	>	threadFail("should throw " + exceptionName);
782	>	}
783	>
784	>	/**
785	>	* Records the given exception using {@link #threadRecordFailure},
786	>	* then rethrows the exception, wrapping it in an
787	>	* AssertionFailedError if necessary.
788	>	*/
789	>	public void threadUnexpectedException(Throwable t) {
790	>	threadRecordFailure(t);
791	>	t.printStackTrace();
792	>	if (t instanceof RuntimeException)
793	>	throw (RuntimeException) t;
794	>	else if (t instanceof Error)
795	>	throw (Error) t;
796	>	else {
797	>	AssertionFailedError afe =
798	>	new AssertionFailedError("unexpected exception: " + t);
799	>	afe.initCause(t);
800	>	throw afe;
801	>	}
802	>	}
803	>
804	>	/**
805	>	* Delays, via Thread.sleep, for the given millisecond delay, but
806	>	* if the sleep is shorter than specified, may re-sleep or yield
807	>	* until time elapses.  Ensures that the given time, as measured
808	>	* by System.nanoTime(), has elapsed.
809	>	*/
810	>	static void delay(long millis) throws InterruptedException {
811	>	long nanos = millis * (1000 * 1000);
812	>	final long wakeupTime = System.nanoTime() + nanos;
813	>	do {
814	>	if (millis > 0L)
815	>	Thread.sleep(millis);
816	>	else // too short to sleep
817	>	Thread.yield();
818	>	nanos = wakeupTime - System.nanoTime();
819	>	millis = nanos / (1000 * 1000);
820	>	} while (nanos >= 0L);
821	>	}
822	>
823	>	/**
824	>	* Allows use of try-with-resources with per-test thread pools.
825	>	*/
826	>	class PoolCleaner implements AutoCloseable {
827	>	private final ExecutorService pool;
828	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
829	>	public void close() { joinPool(pool); }
830	>	}
831	>
832	>	/**
833	>	* An extension of PoolCleaner that has an action to release the pool.
834	>	*/
835	>	class PoolCleanerWithReleaser extends PoolCleaner {
836	>	private final Runnable releaser;
837	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
838	>	super(pool);
839	>	this.releaser = releaser;
840	>	}
841	>	public void close() {
842	>	try {
843	>	releaser.run();
844	>	} finally {
845	>	super.close();
846	>	}
847	>	}
848	>	}
849	>
850	>	PoolCleaner cleaner(ExecutorService pool) {
851	>	return new PoolCleaner(pool);
852	>	}
853	>
854	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
855	>	return new PoolCleanerWithReleaser(pool, releaser);
856	>	}
857	>
858	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
859	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
860	>	}
861	>
862	>	Runnable releaser(final CountDownLatch latch) {
863	>	return new Runnable() { public void run() {
864	>	do { latch.countDown(); }
865	>	while (latch.getCount() > 0);
866	>	}};
867		}
868
869		/**
870	<	* threadFail with message "Unexpected exception"
870	>	* Waits out termination of a thread pool or fails doing so.
871		*/
872	<	public void threadUnexpectedException() {
873	<	threadFailed = true;
874	<	fail("Unexpected exception");
872	>	void joinPool(ExecutorService pool) {
873	>	try {
874	>	pool.shutdown();
875	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
876	>	try {
877	>	threadFail("ExecutorService " + pool +
878	>	" did not terminate in a timely manner");
879	>	} finally {
880	>	// last resort, for the benefit of subsequent tests
881	>	pool.shutdownNow();
882	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
883	>	}
884	>	}
885	>	} catch (SecurityException ok) {
886	>	// Allowed in case test doesn't have privs
887	>	} catch (InterruptedException fail) {
888	>	threadFail("Unexpected InterruptedException");
889	>	}
890		}
891
892	+	/** Like Runnable, but with the freedom to throw anything */
893	+	interface Action { public void run() throws Throwable; }
894	+
895	+	/**
896	+	* Runs all the given actions in parallel, failing if any fail.
897	+	* Useful for running multiple variants of tests that are
898	+	* necessarily individually slow because they must block.
899	+	*/
900	+	void testInParallel(Action ... actions) {
901	+	ExecutorService pool = Executors.newCachedThreadPool();
902	+	try (PoolCleaner cleaner = cleaner(pool)) {
903	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
904	+	for (final Action action : actions)
905	+	futures.add(pool.submit(new CheckedRunnable() {
906	+	public void realRun() throws Throwable { action.run();}}));
907	+	for (Future<?> future : futures)
908	+	try {
909	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
910	+	} catch (ExecutionException ex) {
911	+	threadUnexpectedException(ex.getCause());
912	+	} catch (Exception ex) {
913	+	threadUnexpectedException(ex);
914	+	}
915	+	}
916	+	}
917	+
918	+	/**
919	+	* A debugging tool to print stack traces of most threads, as jstack does.
920	+	* Uninteresting threads are filtered out.
921	+	*/
922	+	static void dumpTestThreads() {
923	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
924	+	System.err.println("------ stacktrace dump start ------");
925	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
926	+	String name = info.getThreadName();
927	+	if ("Signal Dispatcher".equals(name))
928	+	continue;
929	+	if ("Reference Handler".equals(name)
930	+	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
931	+	continue;
932	+	if ("Finalizer".equals(name)
933	+	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
934	+	continue;
935	+	if ("checkForWedgedTest".equals(name))
936	+	continue;
937	+	System.err.print(info);
938	+	}
939	+	System.err.println("------ stacktrace dump end ------");
940	+	}
941	+
942	+	/**
943	+	* Checks that thread does not terminate within the default
944	+	* millisecond delay of {@code timeoutMillis()}.
945	+	*/
946	+	void assertThreadStaysAlive(Thread thread) {
947	+	assertThreadStaysAlive(thread, timeoutMillis());
948	+	}
949	+
950	+	/**
951	+	* Checks that thread does not terminate within the given millisecond delay.
952	+	*/
953	+	void assertThreadStaysAlive(Thread thread, long millis) {
954	+	try {
955	+	// No need to optimize the failing case via Thread.join.
956	+	delay(millis);
957	+	assertTrue(thread.isAlive());
958	+	} catch (InterruptedException fail) {
959	+	threadFail("Unexpected InterruptedException");
960	+	}
961	+	}
962	+
963	+	/**
964	+	* Checks that the threads do not terminate within the default
965	+	* millisecond delay of {@code timeoutMillis()}.
966	+	*/
967	+	void assertThreadsStayAlive(Thread... threads) {
968	+	assertThreadsStayAlive(timeoutMillis(), threads);
969	+	}
970
971		/**
972	<	* Wait out termination of a thread pool or fail doing so
972	>	* Checks that the threads do not terminate within the given millisecond delay.
973		*/
974	<	public void joinPool(ExecutorService exec) {
974	>	void assertThreadsStayAlive(long millis, Thread... threads) {
975		try {
976	<	exec.shutdown();
977	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
978	<	} catch(InterruptedException ie) {
979	<	fail("Unexpected exception");
976	>	// No need to optimize the failing case via Thread.join.
977	>	delay(millis);
978	>	for (Thread thread : threads)
979	>	assertTrue(thread.isAlive());
980	>	} catch (InterruptedException fail) {
981	>	threadFail("Unexpected InterruptedException");
982		}
983		}
984
985	+	/**
986	+	* Checks that future.get times out, with the default timeout of
987	+	* {@code timeoutMillis()}.
988	+	*/
989	+	void assertFutureTimesOut(Future future) {
990	+	assertFutureTimesOut(future, timeoutMillis());
991	+	}
992
993		/**
994	<	* fail with message "should throw exception"
995	<	*/
994	>	* Checks that future.get times out, with the given millisecond timeout.
995	>	*/
996	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
997	>	long startTime = System.nanoTime();
998	>	try {
999	>	future.get(timeoutMillis, MILLISECONDS);
1000	>	shouldThrow();
1001	>	} catch (TimeoutException success) {
1002	>	} catch (Exception fail) {
1003	>	threadUnexpectedException(fail);
1004	>	} finally { future.cancel(true); }
1005	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1006	>	}
1007	>
1008	>	/**
1009	>	* Fails with message "should throw exception".
1010	>	*/
1011		public void shouldThrow() {
1012		fail("Should throw exception");
1013		}
1014
1015		/**
1016	<	* fail with message "Unexpected exception"
1016	>	* Fails with message "should throw " + exceptionName.
1017		*/
1018	<	public void unexpectedException() {
1019	<	fail("Unexpected exception");
1018	>	public void shouldThrow(String exceptionName) {
1019	>	fail("Should throw " + exceptionName);
1020		}
1021
298	–
1022		/**
1023		* The number of elements to place in collections, arrays, etc.
1024		*/
1025	<	static final int SIZE = 20;
1025	>	public static final int SIZE = 20;
1026
1027		// Some convenient Integer constants
1028
1029	<	static final Integer zero = new Integer(0);
1030	<	static final Integer one = new Integer(1);
1031	<	static final Integer two = new Integer(2);
1032	<	static final Integer three  = new Integer(3);
1033	<	static final Integer four  = new Integer(4);
1034	<	static final Integer five  = new Integer(5);
1035	<	static final Integer six = new Integer(6);
1036	<	static final Integer seven = new Integer(7);
1037	<	static final Integer eight = new Integer(8);
1038	<	static final Integer nine = new Integer(9);
1039	<	static final Integer m1  = new Integer(-1);
1040	<	static final Integer m2  = new Integer(-2);
1041	<	static final Integer m3  = new Integer(-3);
1042	<	static final Integer m4 = new Integer(-4);
1043	<	static final Integer m5 = new Integer(-5);
1044	<	static final Integer m10 = new Integer(-10);
1029	>	public static final Integer zero  = new Integer(0);
1030	>	public static final Integer one   = new Integer(1);
1031	>	public static final Integer two   = new Integer(2);
1032	>	public static final Integer three = new Integer(3);
1033	>	public static final Integer four  = new Integer(4);
1034	>	public static final Integer five  = new Integer(5);
1035	>	public static final Integer six   = new Integer(6);
1036	>	public static final Integer seven = new Integer(7);
1037	>	public static final Integer eight = new Integer(8);
1038	>	public static final Integer nine  = new Integer(9);
1039	>	public static final Integer m1  = new Integer(-1);
1040	>	public static final Integer m2  = new Integer(-2);
1041	>	public static final Integer m3  = new Integer(-3);
1042	>	public static final Integer m4  = new Integer(-4);
1043	>	public static final Integer m5  = new Integer(-5);
1044	>	public static final Integer m6  = new Integer(-6);
1045	>	public static final Integer m10 = new Integer(-10);
1046	>
1047	>	/**
1048	>	* Runs Runnable r with a security policy that permits precisely
1049	>	* the specified permissions.  If there is no current security
1050	>	* manager, the runnable is run twice, both with and without a
1051	>	* security manager.  We require that any security manager permit
1052	>	* getPolicy/setPolicy.
1053	>	*/
1054	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1055	>	SecurityManager sm = System.getSecurityManager();
1056	>	if (sm == null) {
1057	>	r.run();
1058	>	}
1059	>	runWithSecurityManagerWithPermissions(r, permissions);
1060	>	}
1061	>
1062	>	/**
1063	>	* Runs Runnable r with a security policy that permits precisely
1064	>	* the specified permissions.  If there is no current security
1065	>	* manager, a temporary one is set for the duration of the
1066	>	* Runnable.  We require that any security manager permit
1067	>	* getPolicy/setPolicy.
1068	>	*/
1069	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1070	>	Permission... permissions) {
1071	>	SecurityManager sm = System.getSecurityManager();
1072	>	if (sm == null) {
1073	>	Policy savedPolicy = Policy.getPolicy();
1074	>	try {
1075	>	Policy.setPolicy(permissivePolicy());
1076	>	System.setSecurityManager(new SecurityManager());
1077	>	runWithSecurityManagerWithPermissions(r, permissions);
1078	>	} finally {
1079	>	System.setSecurityManager(null);
1080	>	Policy.setPolicy(savedPolicy);
1081	>	}
1082	>	} else {
1083	>	Policy savedPolicy = Policy.getPolicy();
1084	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1085	>	Policy.setPolicy(policy);
1086
1087	+	try {
1088	+	r.run();
1089	+	} finally {
1090	+	policy.addPermission(new SecurityPermission("setPolicy"));
1091	+	Policy.setPolicy(savedPolicy);
1092	+	}
1093	+	}
1094	+	}
1095	+
1096	+	/**
1097	+	* Runs a runnable without any permissions.
1098	+	*/
1099	+	public void runWithoutPermissions(Runnable r) {
1100	+	runWithPermissions(r);
1101	+	}
1102
1103		/**
1104		* A security policy where new permissions can be dynamically added
1105		* or all cleared.
1106		*/
1107	<	static class AdjustablePolicy extends java.security.Policy {
1107	>	public static class AdjustablePolicy extends java.security.Policy {
1108		Permissions perms = new Permissions();
1109	<	AdjustablePolicy() { }
1109	>	AdjustablePolicy(Permission... permissions) {
1110	>	for (Permission permission : permissions)
1111	>	perms.add(permission);
1112	>	}
1113		void addPermission(Permission perm) { perms.add(perm); }
1114		void clearPermissions() { perms = new Permissions(); }
1115	<	public PermissionCollection getPermissions(CodeSource cs) {
1116	<	return perms;
1117	<	}
1118	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1119	<	return perms;
1120	<	}
1121	<	public boolean implies(ProtectionDomain pd, Permission p) {
1122	<	return perms.implies(p);
1123	<	}
1124	<	public void refresh() {}
1115	>	public PermissionCollection getPermissions(CodeSource cs) {
1116	>	return perms;
1117	>	}
1118	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1119	>	return perms;
1120	>	}
1121	>	public boolean implies(ProtectionDomain pd, Permission p) {
1122	>	return perms.implies(p);
1123	>	}
1124	>	public void refresh() {}
1125	>	public String toString() {
1126	>	List<Permission> ps = new ArrayList<Permission>();
1127	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1128	>	ps.add(e.nextElement());
1129	>	return "AdjustablePolicy with permissions " + ps;
1130	>	}
1131		}
1132
1133	+	/**
1134	+	* Returns a policy containing all the permissions we ever need.
1135	+	*/
1136	+	public static Policy permissivePolicy() {
1137	+	return new AdjustablePolicy
1138	+	// Permissions j.u.c. needs directly
1139	+	(new RuntimePermission("modifyThread"),
1140	+	new RuntimePermission("getClassLoader"),
1141	+	new RuntimePermission("setContextClassLoader"),
1142	+	// Permissions needed to change permissions!
1143	+	new SecurityPermission("getPolicy"),
1144	+	new SecurityPermission("setPolicy"),
1145	+	new RuntimePermission("setSecurityManager"),
1146	+	// Permissions needed by the junit test harness
1147	+	new RuntimePermission("accessDeclaredMembers"),
1148	+	new PropertyPermission("*", "read"),
1149	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1150	+	}
1151
1152	<	// Some convenient Runnable classes
1152	>	/**
1153	>	* Sleeps until the given time has elapsed.
1154	>	* Throws AssertionFailedError if interrupted.
1155	>	*/
1156	>	void sleep(long millis) {
1157	>	try {
1158	>	delay(millis);
1159	>	} catch (InterruptedException fail) {
1160	>	AssertionFailedError afe =
1161	>	new AssertionFailedError("Unexpected InterruptedException");
1162	>	afe.initCause(fail);
1163	>	throw afe;
1164	>	}
1165	>	}
1166
1167	<	static class NoOpRunnable implements Runnable {
1168	<	public void run() {}
1167	>	/**
1168	>	* Spin-waits up to the specified number of milliseconds for the given
1169	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1170	>	*/
1171	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1172	>	long startTime = System.nanoTime();
1173	>	for (;;) {
1174	>	Thread.State s = thread.getState();
1175	>	if (s == Thread.State.BLOCKED ||
1176	>	s == Thread.State.WAITING ||
1177	>	s == Thread.State.TIMED_WAITING)
1178	>	return;
1179	>	else if (s == Thread.State.TERMINATED)
1180	>	fail("Unexpected thread termination");
1181	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1182	>	threadAssertTrue(thread.isAlive());
1183	>	return;
1184	>	}
1185	>	Thread.yield();
1186	>	}
1187		}
1188
1189	<	static class NoOpCallable implements Callable {
1190	<	public Object call() { return Boolean.TRUE; }
1189	>	/**
1190	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1191	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1192	>	*/
1193	>	void waitForThreadToEnterWaitState(Thread thread) {
1194	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1195		}
1196
1197	<	static final String TEST_STRING = "a test string";
1197	>	/**
1198	>	* Returns the number of milliseconds since time given by
1199	>	* startNanoTime, which must have been previously returned from a
1200	>	* call to {@link System#nanoTime()}.
1201	>	*/
1202	>	static long millisElapsedSince(long startNanoTime) {
1203	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1204	>	}
1205
1206	<	static class StringTask implements Callable<String> {
1207	<	public String call() { return TEST_STRING; }
1206	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1207	>	//         long startTime = System.nanoTime();
1208	>	//         try {
1209	>	//             r.run();
1210	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1211	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1212	>	//             throw new AssertionFailedError("did not return promptly");
1213	>	//     }
1214	>
1215	>	//     void assertTerminatesPromptly(Runnable r) {
1216	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1217	>	//     }
1218	>
1219	>	/**
1220	>	* Checks that timed f.get() returns the expected value, and does not
1221	>	* wait for the timeout to elapse before returning.
1222	>	*/
1223	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1224	>	long startTime = System.nanoTime();
1225	>	try {
1226	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1227	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1228	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1229	>	throw new AssertionFailedError("timed get did not return promptly");
1230		}
1231
1232	<	static class NPETask implements Callable<String> {
1233	<	public String call() { throw new NullPointerException(); }
1232	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1233	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1234		}
1235
1236	<	static class CallableOne implements Callable<Integer> {
1237	<	public Integer call() { return one; }
1236	>	/**
1237	>	* Returns a new started daemon Thread running the given runnable.
1238	>	*/
1239	>	Thread newStartedThread(Runnable runnable) {
1240	>	Thread t = new Thread(runnable);
1241	>	t.setDaemon(true);
1242	>	t.start();
1243	>	return t;
1244		}
1245
1246	<	class ShortRunnable implements Runnable {
1247	<	public void run() {
1248	<	try {
1249	<	Thread.sleep(SHORT_DELAY_MS);
1250	<	}
1251	<	catch(Exception e) {
1252	<	threadUnexpectedException();
1246	>	/**
1247	>	* Waits for the specified time (in milliseconds) for the thread
1248	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1249	>	* the thread (in the hope that it may terminate later) and fails.
1250	>	*/
1251	>	void awaitTermination(Thread t, long timeoutMillis) {
1252	>	try {
1253	>	t.join(timeoutMillis);
1254	>	} catch (InterruptedException fail) {
1255	>	threadUnexpectedException(fail);
1256	>	} finally {
1257	>	if (t.getState() != Thread.State.TERMINATED) {
1258	>	t.interrupt();
1259	>	threadFail("timed out waiting for thread to terminate");
1260		}
1261		}
1262		}
1263
1264	<	class ShortInterruptedRunnable implements Runnable {
1265	<	public void run() {
1264	>	/**
1265	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1266	>	* terminate (using {@link Thread#join(long)}), else interrupts
1267	>	* the thread (in the hope that it may terminate later) and fails.
1268	>	*/
1269	>	void awaitTermination(Thread t) {
1270	>	awaitTermination(t, LONG_DELAY_MS);
1271	>	}
1272	>
1273	>	// Some convenient Runnable classes
1274	>
1275	>	public abstract class CheckedRunnable implements Runnable {
1276	>	protected abstract void realRun() throws Throwable;
1277	>
1278	>	public final void run() {
1279		try {
1280	<	Thread.sleep(SHORT_DELAY_MS);
1281	<	threadShouldThrow();
1282	<	}
387	<	catch(InterruptedException success) {
1280	>	realRun();
1281	>	} catch (Throwable fail) {
1282	>	threadUnexpectedException(fail);
1283		}
1284		}
1285		}
1286
1287	<	class SmallRunnable implements Runnable {
1288	<	public void run() {
1287	>	public abstract class RunnableShouldThrow implements Runnable {
1288	>	protected abstract void realRun() throws Throwable;
1289	>
1290	>	final Class<?> exceptionClass;
1291	>
1292	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1293	>	this.exceptionClass = exceptionClass;
1294	>	}
1295	>
1296	>	public final void run() {
1297		try {
1298	<	Thread.sleep(SMALL_DELAY_MS);
1299	<	}
1300	<	catch(Exception e) {
1301	<	threadUnexpectedException();
1298	>	realRun();
1299	>	threadShouldThrow(exceptionClass.getSimpleName());
1300	>	} catch (Throwable t) {
1301	>	if (! exceptionClass.isInstance(t))
1302	>	threadUnexpectedException(t);
1303		}
1304		}
1305		}
1306
1307	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1308	<	public void run() {
1307	>	public abstract class ThreadShouldThrow extends Thread {
1308	>	protected abstract void realRun() throws Throwable;
1309	>
1310	>	final Class<?> exceptionClass;
1311	>
1312	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1313	>	this.exceptionClass = exceptionClass;
1314	>	}
1315	>
1316	>	public final void run() {
1317		try {
1318	<	Thread.sleep(SMALL_DELAY_MS);
1319	<	}
1320	<	catch(Exception e) {
1318	>	realRun();
1319	>	threadShouldThrow(exceptionClass.getSimpleName());
1320	>	} catch (Throwable t) {
1321	>	if (! exceptionClass.isInstance(t))
1322	>	threadUnexpectedException(t);
1323		}
1324		}
1325		}
1326
1327	<	class SmallCallable implements Callable {
1328	<	public Object call() {
1327	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1328	>	protected abstract void realRun() throws Throwable;
1329	>
1330	>	public final void run() {
1331		try {
1332	<	Thread.sleep(SMALL_DELAY_MS);
1332	>	realRun();
1333	>	threadShouldThrow("InterruptedException");
1334	>	} catch (InterruptedException success) {
1335	>	threadAssertFalse(Thread.interrupted());
1336	>	} catch (Throwable fail) {
1337	>	threadUnexpectedException(fail);
1338		}
418	–	catch(Exception e) {
419	–	threadUnexpectedException();
420	–	}
421	–	return Boolean.TRUE;
1339		}
1340		}
1341
1342	<	class SmallInterruptedRunnable implements Runnable {
1343	<	public void run() {
1342	>	public abstract class CheckedCallable<T> implements Callable<T> {
1343	>	protected abstract T realCall() throws Throwable;
1344	>
1345	>	public final T call() {
1346		try {
1347	<	Thread.sleep(SMALL_DELAY_MS);
1348	<	threadShouldThrow();
1349	<	}
1350	<	catch(InterruptedException success) {
1347	>	return realCall();
1348	>	} catch (Throwable fail) {
1349	>	threadUnexpectedException(fail);
1350	>	return null;
1351		}
1352		}
1353		}
1354
1355	+	public abstract class CheckedInterruptedCallable<T>
1356	+	implements Callable<T> {
1357	+	protected abstract T realCall() throws Throwable;
1358
1359	<	class MediumRunnable implements Runnable {
438	<	public void run() {
1359	>	public final T call() {
1360		try {
1361	<	Thread.sleep(MEDIUM_DELAY_MS);
1362	<	}
1363	<	catch(Exception e) {
1364	<	threadUnexpectedException();
1361	>	T result = realCall();
1362	>	threadShouldThrow("InterruptedException");
1363	>	return result;
1364	>	} catch (InterruptedException success) {
1365	>	threadAssertFalse(Thread.interrupted());
1366	>	} catch (Throwable fail) {
1367	>	threadUnexpectedException(fail);
1368		}
1369	+	return null;
1370		}
1371		}
1372
1373	<	class MediumInterruptedRunnable implements Runnable {
1374	<	public void run() {
1373	>	public static class NoOpRunnable implements Runnable {
1374	>	public void run() {}
1375	>	}
1376	>
1377	>	public static class NoOpCallable implements Callable {
1378	>	public Object call() { return Boolean.TRUE; }
1379	>	}
1380	>
1381	>	public static final String TEST_STRING = "a test string";
1382	>
1383	>	public static class StringTask implements Callable<String> {
1384	>	final String value;
1385	>	public StringTask() { this(TEST_STRING); }
1386	>	public StringTask(String value) { this.value = value; }
1387	>	public String call() { return value; }
1388	>	}
1389	>
1390	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1391	>	return new CheckedCallable<String>() {
1392	>	protected String realCall() {
1393	>	try {
1394	>	latch.await();
1395	>	} catch (InterruptedException quittingTime) {}
1396	>	return TEST_STRING;
1397	>	}};
1398	>	}
1399	>
1400	>	public Runnable countDowner(final CountDownLatch latch) {
1401	>	return new CheckedRunnable() {
1402	>	public void realRun() throws InterruptedException {
1403	>	latch.countDown();
1404	>	}};
1405	>	}
1406	>
1407	>	class LatchAwaiter extends CheckedRunnable {
1408	>	static final int NEW = 0;
1409	>	static final int RUNNING = 1;
1410	>	static final int DONE = 2;
1411	>	final CountDownLatch latch;
1412	>	int state = NEW;
1413	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1414	>	public void realRun() throws InterruptedException {
1415	>	state = 1;
1416	>	await(latch);
1417	>	state = 2;
1418	>	}
1419	>	}
1420	>
1421	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1422	>	return new LatchAwaiter(latch);
1423	>	}
1424	>
1425	>	public void await(CountDownLatch latch) {
1426	>	try {
1427	>	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1428	>	fail("timed out waiting for CountDownLatch for "
1429	>	+ (LONG_DELAY_MS/1000) + " sec");
1430	>	} catch (Throwable fail) {
1431	>	threadUnexpectedException(fail);
1432	>	}
1433	>	}
1434	>
1435	>	public void await(Semaphore semaphore) {
1436	>	try {
1437	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1438	>	fail("timed out waiting for Semaphore for "
1439	>	+ (LONG_DELAY_MS/1000) + " sec");
1440	>	} catch (Throwable fail) {
1441	>	threadUnexpectedException(fail);
1442	>	}
1443	>	}
1444	>
1445	>	//     /**
1446	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1447	>	//      */
1448	>	//     public void await(AtomicBoolean flag) {
1449	>	//         await(flag, LONG_DELAY_MS);
1450	>	//     }
1451	>
1452	>	//     /**
1453	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1454	>	//      */
1455	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1456	>	//         long startTime = System.nanoTime();
1457	>	//         while (!flag.get()) {
1458	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1459	>	//                 throw new AssertionFailedError("timed out");
1460	>	//             Thread.yield();
1461	>	//         }
1462	>	//     }
1463	>
1464	>	public static class NPETask implements Callable<String> {
1465	>	public String call() { throw new NullPointerException(); }
1466	>	}
1467	>
1468	>	public static class CallableOne implements Callable<Integer> {
1469	>	public Integer call() { return one; }
1470	>	}
1471	>
1472	>	public class ShortRunnable extends CheckedRunnable {
1473	>	protected void realRun() throws Throwable {
1474	>	delay(SHORT_DELAY_MS);
1475	>	}
1476	>	}
1477	>
1478	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1479	>	protected void realRun() throws InterruptedException {
1480	>	delay(SHORT_DELAY_MS);
1481	>	}
1482	>	}
1483	>
1484	>	public class SmallRunnable extends CheckedRunnable {
1485	>	protected void realRun() throws Throwable {
1486	>	delay(SMALL_DELAY_MS);
1487	>	}
1488	>	}
1489	>
1490	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1491	>	protected void realRun() {
1492		try {
1493	<	Thread.sleep(MEDIUM_DELAY_MS);
1494	<	threadShouldThrow();
453	<	}
454	<	catch(InterruptedException success) {
455	<	}
1493	>	delay(SMALL_DELAY_MS);
1494	>	} catch (InterruptedException ok) {}
1495		}
1496		}
1497
1498	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1499	<	public void run() {
1498	>	public class SmallCallable extends CheckedCallable {
1499	>	protected Object realCall() throws InterruptedException {
1500	>	delay(SMALL_DELAY_MS);
1501	>	return Boolean.TRUE;
1502	>	}
1503	>	}
1504	>
1505	>	public class MediumRunnable extends CheckedRunnable {
1506	>	protected void realRun() throws Throwable {
1507	>	delay(MEDIUM_DELAY_MS);
1508	>	}
1509	>	}
1510	>
1511	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1512	>	protected void realRun() throws InterruptedException {
1513	>	delay(MEDIUM_DELAY_MS);
1514	>	}
1515	>	}
1516	>
1517	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1518	>	return new CheckedRunnable() {
1519	>	protected void realRun() {
1520	>	try {
1521	>	delay(timeoutMillis);
1522	>	} catch (InterruptedException ok) {}
1523	>	}};
1524	>	}
1525	>
1526	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1527	>	protected void realRun() {
1528		try {
1529	<	Thread.sleep(MEDIUM_DELAY_MS);
1530	<	}
464	<	catch(InterruptedException success) {
465	<	}
1529	>	delay(MEDIUM_DELAY_MS);
1530	>	} catch (InterruptedException ok) {}
1531		}
1532		}
1533
1534	<	class LongPossiblyInterruptedRunnable implements Runnable {
1535	<	public void run() {
1534	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1535	>	protected void realRun() {
1536		try {
1537	<	Thread.sleep(LONG_DELAY_MS);
1538	<	}
474	<	catch(InterruptedException success) {
475	<	}
1537	>	delay(LONG_DELAY_MS);
1538	>	} catch (InterruptedException ok) {}
1539		}
1540		}
1541
1542		/**
1543		* For use as ThreadFactory in constructors
1544		*/
1545	<	static class SimpleThreadFactory implements ThreadFactory{
1546	<	public Thread newThread(Runnable r){
1545	>	public static class SimpleThreadFactory implements ThreadFactory {
1546	>	public Thread newThread(Runnable r) {
1547		return new Thread(r);
1548	<	}
1548	>	}
1549		}
1550
1551	<	static class TrackedShortRunnable implements Runnable {
1552	<	volatile boolean done = false;
1551	>	public interface TrackedRunnable extends Runnable {
1552	>	boolean isDone();
1553	>	}
1554	>
1555	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1556	>	return new TrackedRunnable() {
1557	>	private volatile boolean done = false;
1558	>	public boolean isDone() { return done; }
1559	>	public void run() {
1560	>	try {
1561	>	delay(timeoutMillis);
1562	>	done = true;
1563	>	} catch (InterruptedException ok) {}
1564	>	}
1565	>	};
1566	>	}
1567	>
1568	>	public static class TrackedShortRunnable implements Runnable {
1569	>	public volatile boolean done = false;
1570		public void run() {
1571		try {
1572	<	Thread.sleep(SMALL_DELAY_MS);
1572	>	delay(SHORT_DELAY_MS);
1573		done = true;
1574	<	} catch(Exception e){
495	<	}
1574	>	} catch (InterruptedException ok) {}
1575		}
1576		}
1577
1578	<	static class TrackedMediumRunnable implements Runnable {
1579	<	volatile boolean done = false;
1578	>	public static class TrackedSmallRunnable implements Runnable {
1579	>	public volatile boolean done = false;
1580		public void run() {
1581		try {
1582	<	Thread.sleep(MEDIUM_DELAY_MS);
1582	>	delay(SMALL_DELAY_MS);
1583		done = true;
1584	<	} catch(Exception e){
506	<	}
1584	>	} catch (InterruptedException ok) {}
1585		}
1586		}
1587
1588	<	static class TrackedLongRunnable implements Runnable {
1589	<	volatile boolean done = false;
1588	>	public static class TrackedMediumRunnable implements Runnable {
1589	>	public volatile boolean done = false;
1590		public void run() {
1591		try {
1592	<	Thread.sleep(LONG_DELAY_MS);
1592	>	delay(MEDIUM_DELAY_MS);
1593		done = true;
1594	<	} catch(Exception e){
1595	<	}
1594	>	} catch (InterruptedException ok) {}
1595	>	}
1596	>	}
1597	>
1598	>	public static class TrackedLongRunnable implements Runnable {
1599	>	public volatile boolean done = false;
1600	>	public void run() {
1601	>	try {
1602	>	delay(LONG_DELAY_MS);
1603	>	done = true;
1604	>	} catch (InterruptedException ok) {}
1605		}
1606		}
1607
1608	<	static class TrackedNoOpRunnable implements Runnable {
1609	<	volatile boolean done = false;
1608	>	public static class TrackedNoOpRunnable implements Runnable {
1609	>	public volatile boolean done = false;
1610		public void run() {
1611		done = true;
1612		}
1613		}
1614
1615	<	static class TrackedCallable implements Callable {
1616	<	volatile boolean done = false;
1615	>	public static class TrackedCallable implements Callable {
1616	>	public volatile boolean done = false;
1617		public Object call() {
1618		try {
1619	<	Thread.sleep(SMALL_DELAY_MS);
1619	>	delay(SMALL_DELAY_MS);
1620		done = true;
1621	<	} catch(Exception e){
535	<	}
1621	>	} catch (InterruptedException ok) {}
1622		return Boolean.TRUE;
1623		}
1624		}
1625
1626		/**
1627	+	* Analog of CheckedRunnable for RecursiveAction
1628	+	*/
1629	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1630	+	protected abstract void realCompute() throws Throwable;
1631	+
1632	+	@Override protected final void compute() {
1633	+	try {
1634	+	realCompute();
1635	+	} catch (Throwable fail) {
1636	+	threadUnexpectedException(fail);
1637	+	}
1638	+	}
1639	+	}
1640	+
1641	+	/**
1642	+	* Analog of CheckedCallable for RecursiveTask
1643	+	*/
1644	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1645	+	protected abstract T realCompute() throws Throwable;
1646	+
1647	+	@Override protected final T compute() {
1648	+	try {
1649	+	return realCompute();
1650	+	} catch (Throwable fail) {
1651	+	threadUnexpectedException(fail);
1652	+	return null;
1653	+	}
1654	+	}
1655	+	}
1656	+
1657	+	/**
1658		* For use as RejectedExecutionHandler in constructors
1659		*/
1660	<	static class NoOpREHandler implements RejectedExecutionHandler{
1661	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1660	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1661	>	public void rejectedExecution(Runnable r,
1662	>	ThreadPoolExecutor executor) {}
1663	>	}
1664	>
1665	>	/**
1666	>	* A CyclicBarrier that uses timed await and fails with
1667	>	* AssertionFailedErrors instead of throwing checked exceptions.
1668	>	*/
1669	>	public class CheckedBarrier extends CyclicBarrier {
1670	>	public CheckedBarrier(int parties) { super(parties); }
1671	>
1672	>	public int await() {
1673	>	try {
1674	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1675	>	} catch (TimeoutException timedOut) {
1676	>	throw new AssertionFailedError("timed out");
1677	>	} catch (Exception fail) {
1678	>	AssertionFailedError afe =
1679	>	new AssertionFailedError("Unexpected exception: " + fail);
1680	>	afe.initCause(fail);
1681	>	throw afe;
1682	>	}
1683	>	}
1684	>	}
1685	>
1686	>	void checkEmpty(BlockingQueue q) {
1687	>	try {
1688	>	assertTrue(q.isEmpty());
1689	>	assertEquals(0, q.size());
1690	>	assertNull(q.peek());
1691	>	assertNull(q.poll());
1692	>	assertNull(q.poll(0, MILLISECONDS));
1693	>	assertEquals(q.toString(), "[]");
1694	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1695	>	assertFalse(q.iterator().hasNext());
1696	>	try {
1697	>	q.element();
1698	>	shouldThrow();
1699	>	} catch (NoSuchElementException success) {}
1700	>	try {
1701	>	q.iterator().next();
1702	>	shouldThrow();
1703	>	} catch (NoSuchElementException success) {}
1704	>	try {
1705	>	q.remove();
1706	>	shouldThrow();
1707	>	} catch (NoSuchElementException success) {}
1708	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1709	>	}
1710	>
1711	>	void assertSerialEquals(Object x, Object y) {
1712	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1713	>	}
1714	>
1715	>	void assertNotSerialEquals(Object x, Object y) {
1716	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1717	>	}
1718	>
1719	>	byte[] serialBytes(Object o) {
1720	>	try {
1721	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1722	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1723	>	oos.writeObject(o);
1724	>	oos.flush();
1725	>	oos.close();
1726	>	return bos.toByteArray();
1727	>	} catch (Throwable fail) {
1728	>	threadUnexpectedException(fail);
1729	>	return new byte[0];
1730	>	}
1731	>	}
1732	>
1733	>	@SuppressWarnings("unchecked")
1734	>	<T> T serialClone(T o) {
1735	>	try {
1736	>	ObjectInputStream ois = new ObjectInputStream
1737	>	(new ByteArrayInputStream(serialBytes(o)));
1738	>	T clone = (T) ois.readObject();
1739	>	assertSame(o.getClass(), clone.getClass());
1740	>	return clone;
1741	>	} catch (Throwable fail) {
1742	>	threadUnexpectedException(fail);
1743	>	return null;
1744	>	}
1745	>	}
1746	>
1747	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1748	>	Runnable... throwingActions) {
1749	>	for (Runnable throwingAction : throwingActions) {
1750	>	boolean threw = false;
1751	>	try { throwingAction.run(); }
1752	>	catch (Throwable t) {
1753	>	threw = true;
1754	>	if (!expectedExceptionClass.isInstance(t)) {
1755	>	AssertionFailedError afe =
1756	>	new AssertionFailedError
1757	>	("Expected " + expectedExceptionClass.getName() +
1758	>	", got " + t.getClass().getName());
1759	>	afe.initCause(t);
1760	>	threadUnexpectedException(afe);
1761	>	}
1762	>	}
1763	>	if (!threw)
1764	>	shouldThrow(expectedExceptionClass.getName());
1765	>	}
1766	>	}
1767	>
1768	>	public void assertIteratorExhausted(Iterator<?> it) {
1769	>	try {
1770	>	it.next();
1771	>	shouldThrow();
1772	>	} catch (NoSuchElementException success) {}
1773	>	assertFalse(it.hasNext());
1774		}
546	–
547	–
1775		}

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