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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.33 by jsr166, Fri Jul 31 23:37:31 2009 UTC vs.
Revision 1.208 by jsr166, Sat Nov 5 16:09:50 2016 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.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests
12	>	* @modules java.management
13	>	* @build *
14	>	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
15	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
16	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 -Djava.util.secureRandomSeed=true JSR166TestCase
17	>	*/
18	>
19	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
20	>	import static java.util.concurrent.TimeUnit.MINUTES;
21	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
22	>
23	>	import java.io.ByteArrayInputStream;
24	>	import java.io.ByteArrayOutputStream;
25	>	import java.io.ObjectInputStream;
26	>	import java.io.ObjectOutputStream;
27	>	import java.lang.management.ManagementFactory;
28	>	import java.lang.management.ThreadInfo;
29	>	import java.lang.management.ThreadMXBean;
30	>	import java.lang.reflect.Constructor;
31	>	import java.lang.reflect.Method;
32	>	import java.lang.reflect.Modifier;
33	>	import java.nio.file.Files;
34	>	import java.nio.file.Paths;
35	>	import java.security.CodeSource;
36	>	import java.security.Permission;
37	>	import java.security.PermissionCollection;
38	>	import java.security.Permissions;
39	>	import java.security.Policy;
40	>	import java.security.ProtectionDomain;
41	>	import java.security.SecurityPermission;
42	>	import java.util.ArrayList;
43	>	import java.util.Arrays;
44	>	import java.util.Collection;
45	>	import java.util.Collections;
46	>	import java.util.Date;
47	>	import java.util.Enumeration;
48	>	import java.util.Iterator;
49	>	import java.util.List;
50	>	import java.util.NoSuchElementException;
51	>	import java.util.PropertyPermission;
52	>	import java.util.concurrent.BlockingQueue;
53	>	import java.util.concurrent.Callable;
54	>	import java.util.concurrent.CountDownLatch;
55	>	import java.util.concurrent.CyclicBarrier;
56	>	import java.util.concurrent.ExecutionException;
57	>	import java.util.concurrent.Executors;
58	>	import java.util.concurrent.ExecutorService;
59	>	import java.util.concurrent.ForkJoinPool;
60	>	import java.util.concurrent.Future;
61	>	import java.util.concurrent.RecursiveAction;
62	>	import java.util.concurrent.RecursiveTask;
63	>	import java.util.concurrent.RejectedExecutionHandler;
64	>	import java.util.concurrent.Semaphore;
65	>	import java.util.concurrent.SynchronousQueue;
66	>	import java.util.concurrent.ThreadFactory;
67	>	import java.util.concurrent.ThreadLocalRandom;
68	>	import java.util.concurrent.ThreadPoolExecutor;
69	>	import java.util.concurrent.TimeoutException;
70	>	import java.util.concurrent.atomic.AtomicBoolean;
71	>	import java.util.concurrent.atomic.AtomicReference;
72	>	import java.util.regex.Matcher;
73	>	import java.util.regex.Pattern;
74	>
75	>	import junit.framework.AssertionFailedError;
76	>	import junit.framework.Test;
77	>	import junit.framework.TestCase;
78	>	import junit.framework.TestResult;
79	>	import junit.framework.TestSuite;
80
81		/**
82		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 22 | Line 88 | import java.security.*;
88		*
89		* <ol>
90		*
91	<	* <li> All assertions in code running in generated threads must use
91	>	* <li>All assertions in code running in generated threads must use
92		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
93		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
94	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
94	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
95		* particularly recommended) for other code to use these forms too.
96		* Only the most typically used JUnit assertion methods are defined
97	<	* this way, but enough to live with.</li>
97	>	* this way, but enough to live with.
98		*
99	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
100	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
99	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
100	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
101		* them. These methods are used to clear and check for thread
102	<	* assertion failures.</li>
102	>	* assertion failures.
103		*
104	<	* <li>All delays and timeouts must use one of the constants <tt>
105	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
106	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
104	>	* <li>All delays and timeouts must use one of the constants {@code
105	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
106	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
107		* discriminable from zero time, and always allows enough time for the
108		* small amounts of computation (creating a thread, calling a few
109		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
110		* is always discriminable as larger than SHORT and smaller than
111		* MEDIUM.  And so on. These constants are set to conservative values,
112		* but even so, if there is ever any doubt, they can all be increased
113	<	* in one spot to rerun tests on slower platforms.</li>
113	>	* in one spot to rerun tests on slower platforms.
114		*
115	<	* <li> All threads generated must be joined inside each test case
116	<	* method (or <tt>fail</tt> to do so) before returning from the
117	<	* method. The <tt> joinPool</tt> method can be used to do this when
118	<	* using Executors.</li>
115	>	* <li>All threads generated must be joined inside each test case
116	>	* method (or {@code fail} to do so) before returning from the
117	>	* method. The {@code joinPool} method can be used to do this when
118	>	* using Executors.
119		*
120		* </ol>
121		*
122	<	* <p> <b>Other notes</b>
122	>	* <p><b>Other notes</b>
123		* <ul>
124		*
125	<	* <li> Usually, there is one testcase method per JSR166 method
125	>	* <li>Usually, there is one testcase method per JSR166 method
126		* covering "normal" operation, and then as many exception-testing
127		* methods as there are exceptions the method can throw. Sometimes
128		* there are multiple tests per JSR166 method when the different
129		* "normal" behaviors differ significantly. And sometimes testcases
130	<	* cover multiple methods when they cannot be tested in
65	<	* isolation.</li>
130	>	* cover multiple methods when they cannot be tested in isolation.
131		*
132	<	* <li> The documentation style for testcases is to provide as javadoc
132	>	* <li>The documentation style for testcases is to provide as javadoc
133		* a simple sentence or two describing the property that the testcase
134		* method purports to test. The javadocs do not say anything about how
135	<	* the property is tested. To find out, read the code.</li>
135	>	* the property is tested. To find out, read the code.
136		*
137	<	* <li> These tests are "conformance tests", and do not attempt to
137	>	* <li>These tests are "conformance tests", and do not attempt to
138		* test throughput, latency, scalability or other performance factors
139		* (see the separate "jtreg" tests for a set intended to check these
140		* for the most central aspects of functionality.) So, most tests use
141		* the smallest sensible numbers of threads, collection sizes, etc
142	<	* needed to check basic conformance.</li>
142	>	* needed to check basic conformance.
143		*
144		* <li>The test classes currently do not declare inclusion in
145		* any particular package to simplify things for people integrating
146	<	* them in TCK test suites.</li>
146	>	* them in TCK test suites.
147		*
148	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
149	<	* runs all JSR166 unit tests.</li>
148	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
149	>	* runs all JSR166 unit tests.
150		*
151		* </ul>
152		*/
153		public class JSR166TestCase extends TestCase {
154	+	private static final boolean useSecurityManager =
155	+	Boolean.getBoolean("jsr166.useSecurityManager");
156	+
157	+	protected static final boolean expensiveTests =
158	+	Boolean.getBoolean("jsr166.expensiveTests");
159	+
160		/**
161	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
161	>	* If true, also run tests that are not part of the official tck
162	>	* because they test unspecified implementation details.
163		*/
164	<	public static void main (String[] args) {
165	<	int iters = 1;
166	<	if (args.length > 0)
167	<	iters = Integer.parseInt(args[0]);
168	<	Test s = suite();
169	<	for (int i = 0; i < iters; ++i) {
170	<	junit.textui.TestRunner.run (s);
164	>	protected static final boolean testImplementationDetails =
165	>	Boolean.getBoolean("jsr166.testImplementationDetails");
166	>
167	>	/**
168	>	* If true, report on stdout all "slow" tests, that is, ones that
169	>	* take more than profileThreshold milliseconds to execute.
170	>	*/
171	>	private static final boolean profileTests =
172	>	Boolean.getBoolean("jsr166.profileTests");
173	>
174	>	/**
175	>	* The number of milliseconds that tests are permitted for
176	>	* execution without being reported, when profileTests is set.
177	>	*/
178	>	private static final long profileThreshold =
179	>	Long.getLong("jsr166.profileThreshold", 100);
180	>
181	>	/**
182	>	* The number of repetitions per test (for tickling rare bugs).
183	>	*/
184	>	private static final int runsPerTest =
185	>	Integer.getInteger("jsr166.runsPerTest", 1);
186	>
187	>	/**
188	>	* The number of repetitions of the test suite (for finding leaks?).
189	>	*/
190	>	private static final int suiteRuns =
191	>	Integer.getInteger("jsr166.suiteRuns", 1);
192	>
193	>	/**
194	>	* Returns the value of the system property, or NaN if not defined.
195	>	*/
196	>	private static float systemPropertyValue(String name) {
197	>	String floatString = System.getProperty(name);
198	>	if (floatString == null)
199	>	return Float.NaN;
200	>	try {
201	>	return Float.parseFloat(floatString);
202	>	} catch (NumberFormatException ex) {
203	>	throw new IllegalArgumentException(
204	>	String.format("Bad float value in system property %s=%s",
205	>	name, floatString));
206	>	}
207	>	}
208	>
209	>	/**
210	>	* The scaling factor to apply to standard delays used in tests.
211	>	* May be initialized from any of:
212	>	* - the "jsr166.delay.factor" system property
213	>	* - the "test.timeout.factor" system property (as used by jtreg)
214	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
215	>	* - hard-coded fuzz factor when using a known slowpoke VM
216	>	*/
217	>	private static final float delayFactor = delayFactor();
218	>
219	>	private static float delayFactor() {
220	>	float x;
221	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
222	>	return x;
223	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
224	>	return x;
225	>	String prop = System.getProperty("java.vm.version");
226	>	if (prop != null && prop.matches(".*debug.*"))
227	>	return 4.0f; // How much slower is fastdebug than product?!
228	>	return 1.0f;
229	>	}
230	>
231	>	public JSR166TestCase() { super(); }
232	>	public JSR166TestCase(String name) { super(name); }
233	>
234	>	/**
235	>	* A filter for tests to run, matching strings of the form
236	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
237	>	* Usefully combined with jsr166.runsPerTest.
238	>	*/
239	>	private static final Pattern methodFilter = methodFilter();
240	>
241	>	private static Pattern methodFilter() {
242	>	String regex = System.getProperty("jsr166.methodFilter");
243	>	return (regex == null) ? null : Pattern.compile(regex);
244	>	}
245	>
246	>	// Instrumentation to debug very rare, but very annoying hung test runs.
247	>	static volatile TestCase currentTestCase;
248	>	// static volatile int currentRun = 0;
249	>	static {
250	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
251	>	// Avoid spurious reports with enormous runsPerTest.
252	>	// A single test case run should never take more than 1 second.
253	>	// But let's cap it at the high end too ...
254	>	final int timeoutMinutes =
255	>	Math.min(15, Math.max(runsPerTest / 60, 1));
256	>	for (TestCase lastTestCase = currentTestCase;;) {
257	>	try { MINUTES.sleep(timeoutMinutes); }
258	>	catch (InterruptedException unexpected) { break; }
259	>	if (lastTestCase == currentTestCase) {
260	>	System.err.printf(
261	>	"Looks like we're stuck running test: %s%n",
262	>	lastTestCase);
263	>	//                     System.err.printf(
264	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
265	>	//                         lastTestCase, currentRun, runsPerTest);
266	>	//                     System.err.println("availableProcessors=" +
267	>	//                         Runtime.getRuntime().availableProcessors());
268	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
269	>	dumpTestThreads();
270	>	// one stack dump is probably enough; more would be spam
271	>	break;
272	>	}
273	>	lastTestCase = currentTestCase;
274	>	}}};
275	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
276	>	thread.setDaemon(true);
277	>	thread.start();
278	>	}
279	>
280	>	//     public static String cpuModel() {
281	>	//         try {
282	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
283	>	//                 .matcher(new String(
284	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
285	>	//             matcher.find();
286	>	//             return matcher.group(1);
287	>	//         } catch (Exception ex) { return null; }
288	>	//     }
289	>
290	>	public void runBare() throws Throwable {
291	>	currentTestCase = this;
292	>	if (methodFilter == null
293	>	|| methodFilter.matcher(toString()).find())
294	>	super.runBare();
295	>	}
296	>
297	>	protected void runTest() throws Throwable {
298	>	for (int i = 0; i < runsPerTest; i++) {
299	>	// currentRun = i;
300	>	if (profileTests)
301	>	runTestProfiled();
302	>	else
303	>	super.runTest();
304	>	}
305	>	}
306	>
307	>	protected void runTestProfiled() throws Throwable {
308	>	for (int i = 0; i < 2; i++) {
309	>	long startTime = System.nanoTime();
310	>	super.runTest();
311	>	long elapsedMillis = millisElapsedSince(startTime);
312	>	if (elapsedMillis < profileThreshold)
313	>	break;
314	>	// Never report first run of any test; treat it as a
315	>	// warmup run, notably to trigger all needed classloading,
316	>	if (i > 0)
317	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
318	>	}
319	>	}
320	>
321	>	/**
322	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
323	>	*/
324	>	public static void main(String[] args) {
325	>	main(suite(), args);
326	>	}
327	>
328	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
329	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
330	>	long runTime;
331	>	public void startTest(Test test) {}
332	>	protected void printHeader(long runTime) {
333	>	this.runTime = runTime; // defer printing for later
334	>	}
335	>	protected void printFooter(TestResult result) {
336	>	if (result.wasSuccessful()) {
337	>	getWriter().println("OK (" + result.runCount() + " tests)"
338	>	+ "  Time: " + elapsedTimeAsString(runTime));
339	>	} else {
340	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
341	>	super.printFooter(result);
342	>	}
343	>	}
344	>	}
345	>
346	>	/**
347	>	* Returns a TestRunner that doesn't bother with unnecessary
348	>	* fluff, like printing a "." for each test case.
349	>	*/
350	>	static junit.textui.TestRunner newPithyTestRunner() {
351	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
352	>	runner.setPrinter(new PithyResultPrinter(System.out));
353	>	return runner;
354	>	}
355	>
356	>	/**
357	>	* Runs all unit tests in the given test suite.
358	>	* Actual behavior influenced by jsr166.* system properties.
359	>	*/
360	>	static void main(Test suite, String[] args) {
361	>	if (useSecurityManager) {
362	>	System.err.println("Setting a permissive security manager");
363	>	Policy.setPolicy(permissivePolicy());
364	>	System.setSecurityManager(new SecurityManager());
365	>	}
366	>	for (int i = 0; i < suiteRuns; i++) {
367	>	TestResult result = newPithyTestRunner().doRun(suite);
368	>	if (!result.wasSuccessful())
369	>	System.exit(1);
370		System.gc();
371		System.runFinalization();
372		}
102	–	System.exit(0);
373		}
374
375	<	/**
376	<	* Collects all JSR166 unit tests as one suite
377	<	*/
378	<	public static Test suite ( ) {
379	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
375	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
376	>	TestSuite suite = new TestSuite();
377	>	for (Object suiteOrClass : suiteOrClasses) {
378	>	if (suiteOrClass instanceof TestSuite)
379	>	suite.addTest((TestSuite) suiteOrClass);
380	>	else if (suiteOrClass instanceof Class)
381	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
382	>	else
383	>	throw new ClassCastException("not a test suite or class");
384	>	}
385	>	return suite;
386	>	}
387	>
388	>	public static void addNamedTestClasses(TestSuite suite,
389	>	String... testClassNames) {
390	>	for (String testClassName : testClassNames) {
391	>	try {
392	>	Class<?> testClass = Class.forName(testClassName);
393	>	Method m = testClass.getDeclaredMethod("suite",
394	>	new Class<?>[0]);
395	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
396	>	} catch (Exception e) {
397	>	throw new Error("Missing test class", e);
398	>	}
399	>	}
400	>	}
401
402	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
403	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
404	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
405	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
406	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
407	<	suite.addTest(new TestSuite(PhaserTest.class));
408	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
409	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
410	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
411	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
412	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
413	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
414	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
415	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
416	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
417	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
418	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
419	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
420	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
421	<	suite.addTest(new TestSuite(AtomicLongTest.class));
422	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
423	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
424	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
425	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
426	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
427	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
428	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
429	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
430	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
431	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
432	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
433	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
434	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
435	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
436	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
437	<	suite.addTest(new TestSuite(DelayQueueTest.class));
438	<	suite.addTest(new TestSuite(EntryTest.class));
439	<	suite.addTest(new TestSuite(ExchangerTest.class));
440	<	suite.addTest(new TestSuite(ExecutorsTest.class));
441	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
442	<	suite.addTest(new TestSuite(FutureTaskTest.class));
443	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
444	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
445	<	suite.addTest(new TestSuite(LinkedListTest.class));
446	<	suite.addTest(new TestSuite(LockSupportTest.class));
447	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
448	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
449	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
450	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
451	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
452	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
453	<	suite.addTest(new TestSuite(SemaphoreTest.class));
454	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
455	<	suite.addTest(new TestSuite(SystemTest.class));
456	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
457	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
458	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
459	<	suite.addTest(new TestSuite(ThreadTest.class));
460	<	suite.addTest(new TestSuite(TimeUnitTest.class));
461	<	suite.addTest(new TestSuite(TreeMapTest.class));
462	<	suite.addTest(new TestSuite(TreeSetTest.class));
463	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
464	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
402	>	public static final double JAVA_CLASS_VERSION;
403	>	public static final String JAVA_SPECIFICATION_VERSION;
404	>	static {
405	>	try {
406	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
407	>	new java.security.PrivilegedAction<Double>() {
408	>	public Double run() {
409	>	return Double.valueOf(System.getProperty("java.class.version"));}});
410	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
411	>	new java.security.PrivilegedAction<String>() {
412	>	public String run() {
413	>	return System.getProperty("java.specification.version");}});
414	>	} catch (Throwable t) {
415	>	throw new Error(t);
416	>	}
417	>	}
418	>
419	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
420	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
421	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
422	>	public static boolean atLeastJava9() {
423	>	return JAVA_CLASS_VERSION >= 53.0
424	>	// As of 2015-09, java9 still uses 52.0 class file version
425	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
426	>	}
427	>	public static boolean atLeastJava10() {
428	>	return JAVA_CLASS_VERSION >= 54.0
429	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
430	>	}
431	>
432	>	/**
433	>	* Collects all JSR166 unit tests as one suite.
434	>	*/
435	>	public static Test suite() {
436	>	// Java7+ test classes
437	>	TestSuite suite = newTestSuite(
438	>	ForkJoinPoolTest.suite(),
439	>	ForkJoinTaskTest.suite(),
440	>	RecursiveActionTest.suite(),
441	>	RecursiveTaskTest.suite(),
442	>	LinkedTransferQueueTest.suite(),
443	>	PhaserTest.suite(),
444	>	ThreadLocalRandomTest.suite(),
445	>	AbstractExecutorServiceTest.suite(),
446	>	AbstractQueueTest.suite(),
447	>	AbstractQueuedSynchronizerTest.suite(),
448	>	AbstractQueuedLongSynchronizerTest.suite(),
449	>	ArrayBlockingQueueTest.suite(),
450	>	ArrayDequeTest.suite(),
451	>	ArrayListTest.suite(),
452	>	AtomicBooleanTest.suite(),
453	>	AtomicIntegerArrayTest.suite(),
454	>	AtomicIntegerFieldUpdaterTest.suite(),
455	>	AtomicIntegerTest.suite(),
456	>	AtomicLongArrayTest.suite(),
457	>	AtomicLongFieldUpdaterTest.suite(),
458	>	AtomicLongTest.suite(),
459	>	AtomicMarkableReferenceTest.suite(),
460	>	AtomicReferenceArrayTest.suite(),
461	>	AtomicReferenceFieldUpdaterTest.suite(),
462	>	AtomicReferenceTest.suite(),
463	>	AtomicStampedReferenceTest.suite(),
464	>	ConcurrentHashMapTest.suite(),
465	>	ConcurrentLinkedDequeTest.suite(),
466	>	ConcurrentLinkedQueueTest.suite(),
467	>	ConcurrentSkipListMapTest.suite(),
468	>	ConcurrentSkipListSubMapTest.suite(),
469	>	ConcurrentSkipListSetTest.suite(),
470	>	ConcurrentSkipListSubSetTest.suite(),
471	>	CopyOnWriteArrayListTest.suite(),
472	>	CopyOnWriteArraySetTest.suite(),
473	>	CountDownLatchTest.suite(),
474	>	CountedCompleterTest.suite(),
475	>	CyclicBarrierTest.suite(),
476	>	DelayQueueTest.suite(),
477	>	EntryTest.suite(),
478	>	ExchangerTest.suite(),
479	>	ExecutorsTest.suite(),
480	>	ExecutorCompletionServiceTest.suite(),
481	>	FutureTaskTest.suite(),
482	>	LinkedBlockingDequeTest.suite(),
483	>	LinkedBlockingQueueTest.suite(),
484	>	LinkedListTest.suite(),
485	>	LockSupportTest.suite(),
486	>	PriorityBlockingQueueTest.suite(),
487	>	PriorityQueueTest.suite(),
488	>	ReentrantLockTest.suite(),
489	>	ReentrantReadWriteLockTest.suite(),
490	>	ScheduledExecutorTest.suite(),
491	>	ScheduledExecutorSubclassTest.suite(),
492	>	SemaphoreTest.suite(),
493	>	SynchronousQueueTest.suite(),
494	>	SystemTest.suite(),
495	>	ThreadLocalTest.suite(),
496	>	ThreadPoolExecutorTest.suite(),
497	>	ThreadPoolExecutorSubclassTest.suite(),
498	>	ThreadTest.suite(),
499	>	TimeUnitTest.suite(),
500	>	TreeMapTest.suite(),
501	>	TreeSetTest.suite(),
502	>	TreeSubMapTest.suite(),
503	>	TreeSubSetTest.suite(),
504	>	VectorTest.suite());
505	>
506	>	// Java8+ test classes
507	>	if (atLeastJava8()) {
508	>	String[] java8TestClassNames = {
509	>	"ArrayDeque8Test",
510	>	"Atomic8Test",
511	>	"CompletableFutureTest",
512	>	"ConcurrentHashMap8Test",
513	>	"CountedCompleter8Test",
514	>	"DoubleAccumulatorTest",
515	>	"DoubleAdderTest",
516	>	"ForkJoinPool8Test",
517	>	"ForkJoinTask8Test",
518	>	"LongAccumulatorTest",
519	>	"LongAdderTest",
520	>	"SplittableRandomTest",
521	>	"StampedLockTest",
522	>	"SubmissionPublisherTest",
523	>	"ThreadLocalRandom8Test",
524	>	"TimeUnit8Test",
525	>	};
526	>	addNamedTestClasses(suite, java8TestClassNames);
527	>	}
528	>
529	>	// Java9+ test classes
530	>	if (atLeastJava9()) {
531	>	String[] java9TestClassNames = {
532	>	"AtomicBoolean9Test",
533	>	"AtomicInteger9Test",
534	>	"AtomicIntegerArray9Test",
535	>	"AtomicLong9Test",
536	>	"AtomicLongArray9Test",
537	>	"AtomicReference9Test",
538	>	"AtomicReferenceArray9Test",
539	>	"ExecutorCompletionService9Test",
540	>	};
541	>	addNamedTestClasses(suite, java9TestClassNames);
542	>	}
543
544		return suite;
545		}
546
547	+	/** Returns list of junit-style test method names in given class. */
548	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
549	+	Method[] methods = testClass.getDeclaredMethods();
550	+	ArrayList<String> names = new ArrayList<String>(methods.length);
551	+	for (Method method : methods) {
552	+	if (method.getName().startsWith("test")
553	+	&& Modifier.isPublic(method.getModifiers())
554	+	// method.getParameterCount() requires jdk8+
555	+	&& method.getParameterTypes().length == 0) {
556	+	names.add(method.getName());
557	+	}
558	+	}
559	+	return names;
560	+	}
561	+
562	+	/**
563	+	* Returns junit-style testSuite for the given test class, but
564	+	* parameterized by passing extra data to each test.
565	+	*/
566	+	public static <ExtraData> Test parameterizedTestSuite
567	+	(Class<? extends JSR166TestCase> testClass,
568	+	Class<ExtraData> dataClass,
569	+	ExtraData data) {
570	+	try {
571	+	TestSuite suite = new TestSuite();
572	+	Constructor c =
573	+	testClass.getDeclaredConstructor(dataClass, String.class);
574	+	for (String methodName : testMethodNames(testClass))
575	+	suite.addTest((Test) c.newInstance(data, methodName));
576	+	return suite;
577	+	} catch (Exception e) {
578	+	throw new Error(e);
579	+	}
580	+	}
581	+
582	+	/**
583	+	* Returns junit-style testSuite for the jdk8 extension of the
584	+	* given test class, but parameterized by passing extra data to
585	+	* each test.  Uses reflection to allow compilation in jdk7.
586	+	*/
587	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
588	+	(Class<? extends JSR166TestCase> testClass,
589	+	Class<ExtraData> dataClass,
590	+	ExtraData data) {
591	+	if (atLeastJava8()) {
592	+	String name = testClass.getName();
593	+	String name8 = name.replaceAll("Test$", "8Test");
594	+	if (name.equals(name8)) throw new Error(name);
595	+	try {
596	+	return (Test)
597	+	Class.forName(name8)
598	+	.getMethod("testSuite", new Class[] { dataClass })
599	+	.invoke(null, data);
600	+	} catch (Exception e) {
601	+	throw new Error(e);
602	+	}
603	+	} else {
604	+	return new TestSuite();
605	+	}
606	+	}
607	+
608	+	// Delays for timing-dependent tests, in milliseconds.
609
610		public static long SHORT_DELAY_MS;
611		public static long SMALL_DELAY_MS;
612		public static long MEDIUM_DELAY_MS;
613		public static long LONG_DELAY_MS;
614
184	–
615		/**
616	<	* Returns the shortest timed delay. This could
617	<	* be reimplemented to use for example a Property.
616	>	* Returns the shortest timed delay. This can be scaled up for
617	>	* slow machines using the jsr166.delay.factor system property,
618	>	* or via jtreg's -timeoutFactor: flag.
619	>	* http://openjdk.java.net/jtreg/command-help.html
620		*/
621		protected long getShortDelay() {
622	<	return 50;
622	>	return (long) (50 * delayFactor);
623		}
624
193	–
625		/**
626		* Sets delays as multiples of SHORT_DELAY.
627		*/
628	<	protected  void setDelays() {
628	>	protected void setDelays() {
629		SHORT_DELAY_MS = getShortDelay();
630	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
630	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
631		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
632	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
632	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
633		}
634
635		/**
636	<	* Flag set true if any threadAssert methods fail
636	>	* Returns a timeout in milliseconds to be used in tests that
637	>	* verify that operations block or time out.
638		*/
639	<	volatile boolean threadFailed;
639	>	long timeoutMillis() {
640	>	return SHORT_DELAY_MS / 4;
641	>	}
642
643		/**
644	<	* Initializes test to indicate that no thread assertions have failed
644	>	* Returns a new Date instance representing a time at least
645	>	* delayMillis milliseconds in the future.
646		*/
647	+	Date delayedDate(long delayMillis) {
648	+	// Add 1 because currentTimeMillis is known to round into the past.
649	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
650	+	}
651	+
652	+	/**
653	+	* The first exception encountered if any threadAssertXXX method fails.
654	+	*/
655	+	private final AtomicReference<Throwable> threadFailure
656	+	= new AtomicReference<Throwable>(null);
657	+
658	+	/**
659	+	* Records an exception so that it can be rethrown later in the test
660	+	* harness thread, triggering a test case failure.  Only the first
661	+	* failure is recorded; subsequent calls to this method from within
662	+	* the same test have no effect.
663	+	*/
664	+	public void threadRecordFailure(Throwable t) {
665	+	System.err.println(t);
666	+	dumpTestThreads();
667	+	threadFailure.compareAndSet(null, t);
668	+	}
669	+
670		public void setUp() {
671		setDelays();
672	<	threadFailed = false;
672	>	}
673	>
674	>	void tearDownFail(String format, Object... args) {
675	>	String msg = toString() + ": " + String.format(format, args);
676	>	System.err.println(msg);
677	>	dumpTestThreads();
678	>	throw new AssertionFailedError(msg);
679		}
680
681		/**
682	<	* Triggers test case failure if any thread assertions have failed
682	>	* Extra checks that get done for all test cases.
683	>	*
684	>	* Triggers test case failure if any thread assertions have failed,
685	>	* by rethrowing, in the test harness thread, any exception recorded
686	>	* earlier by threadRecordFailure.
687	>	*
688	>	* Triggers test case failure if interrupt status is set in the main thread.
689		*/
690	<	public void tearDown() {
691	<	assertFalse(threadFailed);
690	>	public void tearDown() throws Exception {
691	>	Throwable t = threadFailure.getAndSet(null);
692	>	if (t != null) {
693	>	if (t instanceof Error)
694	>	throw (Error) t;
695	>	else if (t instanceof RuntimeException)
696	>	throw (RuntimeException) t;
697	>	else if (t instanceof Exception)
698	>	throw (Exception) t;
699	>	else {
700	>	AssertionFailedError afe =
701	>	new AssertionFailedError(t.toString());
702	>	afe.initCause(t);
703	>	throw afe;
704	>	}
705	>	}
706	>
707	>	if (Thread.interrupted())
708	>	tearDownFail("interrupt status set in main thread");
709	>
710	>	checkForkJoinPoolThreadLeaks();
711		}
712
713		/**
714	<	* Fail, also setting status to indicate current testcase should fail
714	>	* Finds missing PoolCleaners
715	>	*/
716	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
717	>	Thread[] survivors = new Thread[7];
718	>	int count = Thread.enumerate(survivors);
719	>	for (int i = 0; i < count; i++) {
720	>	Thread thread = survivors[i];
721	>	String name = thread.getName();
722	>	if (name.startsWith("ForkJoinPool-")) {
723	>	// give thread some time to terminate
724	>	thread.join(LONG_DELAY_MS);
725	>	if (thread.isAlive())
726	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
727	>	thread);
728	>	}
729	>	}
730	>
731	>	if (!ForkJoinPool.commonPool()
732	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
733	>	tearDownFail("ForkJoin common pool thread stuck");
734	>	}
735	>
736	>	/**
737	>	* Just like fail(reason), but additionally recording (using
738	>	* threadRecordFailure) any AssertionFailedError thrown, so that
739	>	* the current testcase will fail.
740		*/
741		public void threadFail(String reason) {
742	<	threadFailed = true;
743	<	fail(reason);
742	>	try {
743	>	fail(reason);
744	>	} catch (AssertionFailedError t) {
745	>	threadRecordFailure(t);
746	>	throw t;
747	>	}
748		}
749
750		/**
751	<	* If expression not true, set status to indicate current testcase
752	<	* should fail
751	>	* Just like assertTrue(b), but additionally recording (using
752	>	* threadRecordFailure) any AssertionFailedError thrown, so that
753	>	* the current testcase will fail.
754		*/
755		public void threadAssertTrue(boolean b) {
756	<	if (!b) {
238	<	threadFailed = true;
756	>	try {
757		assertTrue(b);
758	+	} catch (AssertionFailedError t) {
759	+	threadRecordFailure(t);
760	+	throw t;
761		}
762		}
763
764		/**
765	<	* If expression not false, set status to indicate current testcase
766	<	* should fail
765	>	* Just like assertFalse(b), but additionally recording (using
766	>	* threadRecordFailure) any AssertionFailedError thrown, so that
767	>	* the current testcase will fail.
768		*/
769		public void threadAssertFalse(boolean b) {
770	<	if (b) {
249	<	threadFailed = true;
770	>	try {
771		assertFalse(b);
772	+	} catch (AssertionFailedError t) {
773	+	threadRecordFailure(t);
774	+	throw t;
775		}
776		}
777
778		/**
779	<	* If argument not null, set status to indicate current testcase
780	<	* should fail
779	>	* Just like assertNull(x), but additionally recording (using
780	>	* threadRecordFailure) any AssertionFailedError thrown, so that
781	>	* the current testcase will fail.
782		*/
783		public void threadAssertNull(Object x) {
784	<	if (x != null) {
260	<	threadFailed = true;
784	>	try {
785		assertNull(x);
786	+	} catch (AssertionFailedError t) {
787	+	threadRecordFailure(t);
788	+	throw t;
789		}
790		}
791
792		/**
793	<	* If arguments not equal, set status to indicate current testcase
794	<	* should fail
793	>	* Just like assertEquals(x, y), but additionally recording (using
794	>	* threadRecordFailure) any AssertionFailedError thrown, so that
795	>	* the current testcase will fail.
796		*/
797		public void threadAssertEquals(long x, long y) {
798	<	if (x != y) {
271	<	threadFailed = true;
798	>	try {
799		assertEquals(x, y);
800	+	} catch (AssertionFailedError t) {
801	+	threadRecordFailure(t);
802	+	throw t;
803		}
804		}
805
806		/**
807	<	* If arguments not equal, set status to indicate current testcase
808	<	* should fail
807	>	* Just like assertEquals(x, y), but additionally recording (using
808	>	* threadRecordFailure) any AssertionFailedError thrown, so that
809	>	* the current testcase will fail.
810		*/
811		public void threadAssertEquals(Object x, Object y) {
812	<	if (x != y && (x == null || !x.equals(y))) {
282	<	threadFailed = true;
812	>	try {
813		assertEquals(x, y);
814	+	} catch (AssertionFailedError fail) {
815	+	threadRecordFailure(fail);
816	+	throw fail;
817	+	} catch (Throwable fail) {
818	+	threadUnexpectedException(fail);
819	+	}
820	+	}
821	+
822	+	/**
823	+	* Just like assertSame(x, y), but additionally recording (using
824	+	* threadRecordFailure) any AssertionFailedError thrown, so that
825	+	* the current testcase will fail.
826	+	*/
827	+	public void threadAssertSame(Object x, Object y) {
828	+	try {
829	+	assertSame(x, y);
830	+	} catch (AssertionFailedError fail) {
831	+	threadRecordFailure(fail);
832	+	throw fail;
833		}
834		}
835
836		/**
837	<	* threadFail with message "should throw exception"
837	>	* Calls threadFail with message "should throw exception".
838		*/
839		public void threadShouldThrow() {
840	<	try {
841	<	threadFailed = true;
842	<	fail("should throw exception");
843	<	} catch (AssertionFailedError e) {
844	<	e.printStackTrace();
845	<	throw e;
846	<	}
840	>	threadFail("should throw exception");
841	>	}
842	>
843	>	/**
844	>	* Calls threadFail with message "should throw" + exceptionName.
845	>	*/
846	>	public void threadShouldThrow(String exceptionName) {
847	>	threadFail("should throw " + exceptionName);
848		}
849
850		/**
851	<	* threadFail with message "Unexpected exception"
851	>	* Records the given exception using {@link #threadRecordFailure},
852	>	* then rethrows the exception, wrapping it in an
853	>	* AssertionFailedError if necessary.
854		*/
855	<	public void threadUnexpectedException() {
856	<	threadFailed = true;
857	<	fail("Unexpected exception");
855	>	public void threadUnexpectedException(Throwable t) {
856	>	threadRecordFailure(t);
857	>	t.printStackTrace();
858	>	if (t instanceof RuntimeException)
859	>	throw (RuntimeException) t;
860	>	else if (t instanceof Error)
861	>	throw (Error) t;
862	>	else {
863	>	AssertionFailedError afe =
864	>	new AssertionFailedError("unexpected exception: " + t);
865	>	afe.initCause(t);
866	>	throw afe;
867	>	}
868		}
869
870		/**
871	<	* threadFail with message "Unexpected exception", with argument
871	>	* Delays, via Thread.sleep, for the given millisecond delay, but
872	>	* if the sleep is shorter than specified, may re-sleep or yield
873	>	* until time elapses.  Ensures that the given time, as measured
874	>	* by System.nanoTime(), has elapsed.
875		*/
876	<	public void threadUnexpectedException(Throwable ex) {
877	<	threadFailed = true;
878	<	ex.printStackTrace();
879	<	fail("Unexpected exception: " + ex);
876	>	static void delay(long millis) throws InterruptedException {
877	>	long nanos = millis * (1000 * 1000);
878	>	final long wakeupTime = System.nanoTime() + nanos;
879	>	do {
880	>	if (millis > 0L)
881	>	Thread.sleep(millis);
882	>	else // too short to sleep
883	>	Thread.yield();
884	>	nanos = wakeupTime - System.nanoTime();
885	>	millis = nanos / (1000 * 1000);
886	>	} while (nanos >= 0L);
887	>	}
888	>
889	>	/**
890	>	* Allows use of try-with-resources with per-test thread pools.
891	>	*/
892	>	class PoolCleaner implements AutoCloseable {
893	>	private final ExecutorService pool;
894	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
895	>	public void close() { joinPool(pool); }
896	>	}
897	>
898	>	/**
899	>	* An extension of PoolCleaner that has an action to release the pool.
900	>	*/
901	>	class PoolCleanerWithReleaser extends PoolCleaner {
902	>	private final Runnable releaser;
903	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
904	>	super(pool);
905	>	this.releaser = releaser;
906	>	}
907	>	public void close() {
908	>	try {
909	>	releaser.run();
910	>	} finally {
911	>	super.close();
912	>	}
913	>	}
914	>	}
915	>
916	>	PoolCleaner cleaner(ExecutorService pool) {
917	>	return new PoolCleaner(pool);
918	>	}
919	>
920	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
921	>	return new PoolCleanerWithReleaser(pool, releaser);
922	>	}
923	>
924	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
925	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
926	>	}
927	>
928	>	Runnable releaser(final CountDownLatch latch) {
929	>	return new Runnable() { public void run() {
930	>	do { latch.countDown(); }
931	>	while (latch.getCount() > 0);
932	>	}};
933	>	}
934	>
935	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
936	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
937	>	}
938	>
939	>	Runnable releaser(final AtomicBoolean flag) {
940	>	return new Runnable() { public void run() { flag.set(true); }};
941		}
942
943		/**
944	<	* Wait out termination of a thread pool or fail doing so
944	>	* Waits out termination of a thread pool or fails doing so.
945		*/
946	<	public void joinPool(ExecutorService exec) {
946	>	void joinPool(ExecutorService pool) {
947		try {
948	<	exec.shutdown();
949	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
948	>	pool.shutdown();
949	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
950	>	try {
951	>	threadFail("ExecutorService " + pool +
952	>	" did not terminate in a timely manner");
953	>	} finally {
954	>	// last resort, for the benefit of subsequent tests
955	>	pool.shutdownNow();
956	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
957	>	}
958	>	}
959		} catch (SecurityException ok) {
960		// Allowed in case test doesn't have privs
961	<	} catch (InterruptedException ie) {
962	<	fail("Unexpected exception");
961	>	} catch (InterruptedException fail) {
962	>	threadFail("Unexpected InterruptedException");
963	>	}
964	>	}
965	>
966	>	/**
967	>	* Like Runnable, but with the freedom to throw anything.
968	>	* junit folks had the same idea:
969	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
970	>	*/
971	>	interface Action { public void run() throws Throwable; }
972	>
973	>	/**
974	>	* Runs all the given actions in parallel, failing if any fail.
975	>	* Useful for running multiple variants of tests that are
976	>	* necessarily individually slow because they must block.
977	>	*/
978	>	void testInParallel(Action ... actions) {
979	>	ExecutorService pool = Executors.newCachedThreadPool();
980	>	try (PoolCleaner cleaner = cleaner(pool)) {
981	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
982	>	for (final Action action : actions)
983	>	futures.add(pool.submit(new CheckedRunnable() {
984	>	public void realRun() throws Throwable { action.run();}}));
985	>	for (Future<?> future : futures)
986	>	try {
987	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
988	>	} catch (ExecutionException ex) {
989	>	threadUnexpectedException(ex.getCause());
990	>	} catch (Exception ex) {
991	>	threadUnexpectedException(ex);
992	>	}
993	>	}
994	>	}
995	>
996	>	/**
997	>	* A debugging tool to print stack traces of most threads, as jstack does.
998	>	* Uninteresting threads are filtered out.
999	>	*/
1000	>	static void dumpTestThreads() {
1001	>	SecurityManager sm = System.getSecurityManager();
1002	>	if (sm != null) {
1003	>	try {
1004	>	System.setSecurityManager(null);
1005	>	} catch (SecurityException giveUp) {
1006	>	return;
1007	>	}
1008	>	}
1009	>
1010	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1011	>	System.err.println("------ stacktrace dump start ------");
1012	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1013	>	final String name = info.getThreadName();
1014	>	String lockName;
1015	>	if ("Signal Dispatcher".equals(name))
1016	>	continue;
1017	>	if ("Reference Handler".equals(name)
1018	>	&& (lockName = info.getLockName()) != null
1019	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1020	>	continue;
1021	>	if ("Finalizer".equals(name)
1022	>	&& (lockName = info.getLockName()) != null
1023	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1024	>	continue;
1025	>	if ("checkForWedgedTest".equals(name))
1026	>	continue;
1027	>	System.err.print(info);
1028	>	}
1029	>	System.err.println("------ stacktrace dump end ------");
1030	>
1031	>	if (sm != null) System.setSecurityManager(sm);
1032	>	}
1033	>
1034	>	/**
1035	>	* Checks that thread does not terminate within the default
1036	>	* millisecond delay of {@code timeoutMillis()}.
1037	>	*/
1038	>	void assertThreadStaysAlive(Thread thread) {
1039	>	assertThreadStaysAlive(thread, timeoutMillis());
1040	>	}
1041	>
1042	>	/**
1043	>	* Checks that thread does not terminate within the given millisecond delay.
1044	>	*/
1045	>	void assertThreadStaysAlive(Thread thread, long millis) {
1046	>	try {
1047	>	// No need to optimize the failing case via Thread.join.
1048	>	delay(millis);
1049	>	assertTrue(thread.isAlive());
1050	>	} catch (InterruptedException fail) {
1051	>	threadFail("Unexpected InterruptedException");
1052		}
1053		}
1054
1055	+	/**
1056	+	* Checks that the threads do not terminate within the default
1057	+	* millisecond delay of {@code timeoutMillis()}.
1058	+	*/
1059	+	void assertThreadsStayAlive(Thread... threads) {
1060	+	assertThreadsStayAlive(timeoutMillis(), threads);
1061	+	}
1062
1063		/**
1064	<	* fail with message "should throw exception"
1064	>	* Checks that the threads do not terminate within the given millisecond delay.
1065	>	*/
1066	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1067	>	try {
1068	>	// No need to optimize the failing case via Thread.join.
1069	>	delay(millis);
1070	>	for (Thread thread : threads)
1071	>	assertTrue(thread.isAlive());
1072	>	} catch (InterruptedException fail) {
1073	>	threadFail("Unexpected InterruptedException");
1074	>	}
1075	>	}
1076	>
1077	>	/**
1078	>	* Checks that future.get times out, with the default timeout of
1079	>	* {@code timeoutMillis()}.
1080	>	*/
1081	>	void assertFutureTimesOut(Future future) {
1082	>	assertFutureTimesOut(future, timeoutMillis());
1083	>	}
1084	>
1085	>	/**
1086	>	* Checks that future.get times out, with the given millisecond timeout.
1087	>	*/
1088	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1089	>	long startTime = System.nanoTime();
1090	>	try {
1091	>	future.get(timeoutMillis, MILLISECONDS);
1092	>	shouldThrow();
1093	>	} catch (TimeoutException success) {
1094	>	} catch (Exception fail) {
1095	>	threadUnexpectedException(fail);
1096	>	} finally { future.cancel(true); }
1097	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1098	>	}
1099	>
1100	>	/**
1101	>	* Fails with message "should throw exception".
1102		*/
1103		public void shouldThrow() {
1104		fail("Should throw exception");
1105		}
1106
1107		/**
1108	<	* fail with message "Unexpected exception"
1108	>	* Fails with message "should throw " + exceptionName.
1109		*/
1110	<	public void unexpectedException() {
1111	<	fail("Unexpected exception");
1110	>	public void shouldThrow(String exceptionName) {
1111	>	fail("Should throw " + exceptionName);
1112		}
1113
346	–
1114		/**
1115		* The number of elements to place in collections, arrays, etc.
1116		*/
1117	<	static final int SIZE = 20;
1117	>	public static final int SIZE = 20;
1118
1119		// Some convenient Integer constants
1120
1121	<	static final Integer zero = new Integer(0);
1122	<	static final Integer one = new Integer(1);
1123	<	static final Integer two = new Integer(2);
1124	<	static final Integer three  = new Integer(3);
1125	<	static final Integer four  = new Integer(4);
1126	<	static final Integer five  = new Integer(5);
1127	<	static final Integer six = new Integer(6);
1128	<	static final Integer seven = new Integer(7);
1129	<	static final Integer eight = new Integer(8);
1130	<	static final Integer nine = new Integer(9);
1131	<	static final Integer m1  = new Integer(-1);
1132	<	static final Integer m2  = new Integer(-2);
1133	<	static final Integer m3  = new Integer(-3);
1134	<	static final Integer m4 = new Integer(-4);
1135	<	static final Integer m5 = new Integer(-5);
1136	<	static final Integer m6 = new Integer(-6);
1137	<	static final Integer m10 = new Integer(-10);
1121	>	public static final Integer zero  = new Integer(0);
1122	>	public static final Integer one   = new Integer(1);
1123	>	public static final Integer two   = new Integer(2);
1124	>	public static final Integer three = new Integer(3);
1125	>	public static final Integer four  = new Integer(4);
1126	>	public static final Integer five  = new Integer(5);
1127	>	public static final Integer six   = new Integer(6);
1128	>	public static final Integer seven = new Integer(7);
1129	>	public static final Integer eight = new Integer(8);
1130	>	public static final Integer nine  = new Integer(9);
1131	>	public static final Integer m1  = new Integer(-1);
1132	>	public static final Integer m2  = new Integer(-2);
1133	>	public static final Integer m3  = new Integer(-3);
1134	>	public static final Integer m4  = new Integer(-4);
1135	>	public static final Integer m5  = new Integer(-5);
1136	>	public static final Integer m6  = new Integer(-6);
1137	>	public static final Integer m10 = new Integer(-10);
1138	>
1139	>	/**
1140	>	* Runs Runnable r with a security policy that permits precisely
1141	>	* the specified permissions.  If there is no current security
1142	>	* manager, the runnable is run twice, both with and without a
1143	>	* security manager.  We require that any security manager permit
1144	>	* getPolicy/setPolicy.
1145	>	*/
1146	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1147	>	SecurityManager sm = System.getSecurityManager();
1148	>	if (sm == null) {
1149	>	r.run();
1150	>	}
1151	>	runWithSecurityManagerWithPermissions(r, permissions);
1152	>	}
1153
1154	+	/**
1155	+	* Runs Runnable r with a security policy that permits precisely
1156	+	* the specified permissions.  If there is no current security
1157	+	* manager, a temporary one is set for the duration of the
1158	+	* Runnable.  We require that any security manager permit
1159	+	* getPolicy/setPolicy.
1160	+	*/
1161	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1162	+	Permission... permissions) {
1163	+	SecurityManager sm = System.getSecurityManager();
1164	+	if (sm == null) {
1165	+	Policy savedPolicy = Policy.getPolicy();
1166	+	try {
1167	+	Policy.setPolicy(permissivePolicy());
1168	+	System.setSecurityManager(new SecurityManager());
1169	+	runWithSecurityManagerWithPermissions(r, permissions);
1170	+	} finally {
1171	+	System.setSecurityManager(null);
1172	+	Policy.setPolicy(savedPolicy);
1173	+	}
1174	+	} else {
1175	+	Policy savedPolicy = Policy.getPolicy();
1176	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1177	+	Policy.setPolicy(policy);
1178	+
1179	+	try {
1180	+	r.run();
1181	+	} finally {
1182	+	policy.addPermission(new SecurityPermission("setPolicy"));
1183	+	Policy.setPolicy(savedPolicy);
1184	+	}
1185	+	}
1186	+	}
1187	+
1188	+	/**
1189	+	* Runs a runnable without any permissions.
1190	+	*/
1191	+	public void runWithoutPermissions(Runnable r) {
1192	+	runWithPermissions(r);
1193	+	}
1194
1195		/**
1196		* A security policy where new permissions can be dynamically added
1197		* or all cleared.
1198		*/
1199	<	static class AdjustablePolicy extends java.security.Policy {
1199	>	public static class AdjustablePolicy extends java.security.Policy {
1200		Permissions perms = new Permissions();
1201	<	AdjustablePolicy() { }
1201	>	AdjustablePolicy(Permission... permissions) {
1202	>	for (Permission permission : permissions)
1203	>	perms.add(permission);
1204	>	}
1205		void addPermission(Permission perm) { perms.add(perm); }
1206		void clearPermissions() { perms = new Permissions(); }
1207	<	public PermissionCollection getPermissions(CodeSource cs) {
1208	<	return perms;
1209	<	}
1210	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1211	<	return perms;
1212	<	}
1213	<	public boolean implies(ProtectionDomain pd, Permission p) {
1214	<	return perms.implies(p);
1215	<	}
1216	<	public void refresh() {}
1207	>	public PermissionCollection getPermissions(CodeSource cs) {
1208	>	return perms;
1209	>	}
1210	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1211	>	return perms;
1212	>	}
1213	>	public boolean implies(ProtectionDomain pd, Permission p) {
1214	>	return perms.implies(p);
1215	>	}
1216	>	public void refresh() {}
1217	>	public String toString() {
1218	>	List<Permission> ps = new ArrayList<Permission>();
1219	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1220	>	ps.add(e.nextElement());
1221	>	return "AdjustablePolicy with permissions " + ps;
1222	>	}
1223		}
1224
1225	+	/**
1226	+	* Returns a policy containing all the permissions we ever need.
1227	+	*/
1228	+	public static Policy permissivePolicy() {
1229	+	return new AdjustablePolicy
1230	+	// Permissions j.u.c. needs directly
1231	+	(new RuntimePermission("modifyThread"),
1232	+	new RuntimePermission("getClassLoader"),
1233	+	new RuntimePermission("setContextClassLoader"),
1234	+	// Permissions needed to change permissions!
1235	+	new SecurityPermission("getPolicy"),
1236	+	new SecurityPermission("setPolicy"),
1237	+	new RuntimePermission("setSecurityManager"),
1238	+	// Permissions needed by the junit test harness
1239	+	new RuntimePermission("accessDeclaredMembers"),
1240	+	new PropertyPermission("*", "read"),
1241	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1242	+	}
1243
1244	<	// Some convenient Runnable classes
1244	>	/**
1245	>	* Sleeps until the given time has elapsed.
1246	>	* Throws AssertionFailedError if interrupted.
1247	>	*/
1248	>	static void sleep(long millis) {
1249	>	try {
1250	>	delay(millis);
1251	>	} catch (InterruptedException fail) {
1252	>	AssertionFailedError afe =
1253	>	new AssertionFailedError("Unexpected InterruptedException");
1254	>	afe.initCause(fail);
1255	>	throw afe;
1256	>	}
1257	>	}
1258
1259	<	static class NoOpRunnable implements Runnable {
1260	<	public void run() {}
1259	>	/**
1260	>	* Spin-waits up to the specified number of milliseconds for the given
1261	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1262	>	*/
1263	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1264	>	long startTime = 0L;
1265	>	for (;;) {
1266	>	Thread.State s = thread.getState();
1267	>	if (s == Thread.State.BLOCKED ||
1268	>	s == Thread.State.WAITING ||
1269	>	s == Thread.State.TIMED_WAITING)
1270	>	return;
1271	>	else if (s == Thread.State.TERMINATED)
1272	>	fail("Unexpected thread termination");
1273	>	else if (startTime == 0L)
1274	>	startTime = System.nanoTime();
1275	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1276	>	threadAssertTrue(thread.isAlive());
1277	>	return;
1278	>	}
1279	>	Thread.yield();
1280	>	}
1281		}
1282
1283	<	static class NoOpCallable implements Callable {
1284	<	public Object call() { return Boolean.TRUE; }
1283	>	/**
1284	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1285	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1286	>	*/
1287	>	void waitForThreadToEnterWaitState(Thread thread) {
1288	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1289	>	}
1290	>
1291	>	/**
1292	>	* Returns the number of milliseconds since time given by
1293	>	* startNanoTime, which must have been previously returned from a
1294	>	* call to {@link System#nanoTime()}.
1295	>	*/
1296	>	static long millisElapsedSince(long startNanoTime) {
1297	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1298		}
1299
1300	<	static final String TEST_STRING = "a test string";
1300	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1301	>	//         long startTime = System.nanoTime();
1302	>	//         try {
1303	>	//             r.run();
1304	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1305	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1306	>	//             throw new AssertionFailedError("did not return promptly");
1307	>	//     }
1308
1309	<	static class StringTask implements Callable<String> {
1310	<	public String call() { return TEST_STRING; }
1309	>	//     void assertTerminatesPromptly(Runnable r) {
1310	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1311	>	//     }
1312	>
1313	>	/**
1314	>	* Checks that timed f.get() returns the expected value, and does not
1315	>	* wait for the timeout to elapse before returning.
1316	>	*/
1317	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1318	>	long startTime = System.nanoTime();
1319	>	try {
1320	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1321	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1322	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1323	>	throw new AssertionFailedError("timed get did not return promptly");
1324		}
1325
1326	<	static class NPETask implements Callable<String> {
1327	<	public String call() { throw new NullPointerException(); }
1326	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1327	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1328		}
1329
1330	<	static class CallableOne implements Callable<Integer> {
1331	<	public Integer call() { return one; }
1330	>	/**
1331	>	* Returns a new started daemon Thread running the given runnable.
1332	>	*/
1333	>	Thread newStartedThread(Runnable runnable) {
1334	>	Thread t = new Thread(runnable);
1335	>	t.setDaemon(true);
1336	>	t.start();
1337	>	return t;
1338		}
1339
1340	<	class ShortRunnable implements Runnable {
1341	<	public void run() {
1342	<	try {
1343	<	Thread.sleep(SHORT_DELAY_MS);
1344	<	}
1345	<	catch (Exception e) {
1346	<	threadUnexpectedException(e);
1340	>	/**
1341	>	* Waits for the specified time (in milliseconds) for the thread
1342	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1343	>	* the thread (in the hope that it may terminate later) and fails.
1344	>	*/
1345	>	void awaitTermination(Thread t, long timeoutMillis) {
1346	>	try {
1347	>	t.join(timeoutMillis);
1348	>	} catch (InterruptedException fail) {
1349	>	threadUnexpectedException(fail);
1350	>	} finally {
1351	>	if (t.getState() != Thread.State.TERMINATED) {
1352	>	t.interrupt();
1353	>	threadFail("timed out waiting for thread to terminate");
1354		}
1355		}
1356		}
1357
1358	<	class ShortInterruptedRunnable implements Runnable {
1359	<	public void run() {
1358	>	/**
1359	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1360	>	* terminate (using {@link Thread#join(long)}), else interrupts
1361	>	* the thread (in the hope that it may terminate later) and fails.
1362	>	*/
1363	>	void awaitTermination(Thread t) {
1364	>	awaitTermination(t, LONG_DELAY_MS);
1365	>	}
1366	>
1367	>	// Some convenient Runnable classes
1368	>
1369	>	public abstract class CheckedRunnable implements Runnable {
1370	>	protected abstract void realRun() throws Throwable;
1371	>
1372	>	public final void run() {
1373		try {
1374	<	Thread.sleep(SHORT_DELAY_MS);
1375	<	threadShouldThrow();
1376	<	}
436	<	catch (InterruptedException success) {
1374	>	realRun();
1375	>	} catch (Throwable fail) {
1376	>	threadUnexpectedException(fail);
1377		}
1378		}
1379		}
1380
1381	<	class SmallRunnable implements Runnable {
1382	<	public void run() {
1381	>	public abstract class RunnableShouldThrow implements Runnable {
1382	>	protected abstract void realRun() throws Throwable;
1383	>
1384	>	final Class<?> exceptionClass;
1385	>
1386	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1387	>	this.exceptionClass = exceptionClass;
1388	>	}
1389	>
1390	>	public final void run() {
1391		try {
1392	<	Thread.sleep(SMALL_DELAY_MS);
1393	<	}
1394	<	catch (Exception e) {
1395	<	threadUnexpectedException(e);
1392	>	realRun();
1393	>	threadShouldThrow(exceptionClass.getSimpleName());
1394	>	} catch (Throwable t) {
1395	>	if (! exceptionClass.isInstance(t))
1396	>	threadUnexpectedException(t);
1397		}
1398		}
1399		}
1400
1401	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1402	<	public void run() {
1401	>	public abstract class ThreadShouldThrow extends Thread {
1402	>	protected abstract void realRun() throws Throwable;
1403	>
1404	>	final Class<?> exceptionClass;
1405	>
1406	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1407	>	this.exceptionClass = exceptionClass;
1408	>	}
1409	>
1410	>	public final void run() {
1411		try {
1412	<	Thread.sleep(SMALL_DELAY_MS);
1413	<	}
1414	<	catch (Exception e) {
1412	>	realRun();
1413	>	threadShouldThrow(exceptionClass.getSimpleName());
1414	>	} catch (Throwable t) {
1415	>	if (! exceptionClass.isInstance(t))
1416	>	threadUnexpectedException(t);
1417		}
1418		}
1419		}
1420
1421	<	class SmallCallable implements Callable {
1422	<	public Object call() {
1421	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1422	>	protected abstract void realRun() throws Throwable;
1423	>
1424	>	public final void run() {
1425		try {
1426	<	Thread.sleep(SMALL_DELAY_MS);
1427	<	}
1428	<	catch (Exception e) {
1429	<	threadUnexpectedException(e);
1426	>	realRun();
1427	>	threadShouldThrow("InterruptedException");
1428	>	} catch (InterruptedException success) {
1429	>	threadAssertFalse(Thread.interrupted());
1430	>	} catch (Throwable fail) {
1431	>	threadUnexpectedException(fail);
1432		}
470	–	return Boolean.TRUE;
1433		}
1434		}
1435
1436	<	class SmallInterruptedRunnable implements Runnable {
1437	<	public void run() {
1436	>	public abstract class CheckedCallable<T> implements Callable<T> {
1437	>	protected abstract T realCall() throws Throwable;
1438	>
1439	>	public final T call() {
1440		try {
1441	<	Thread.sleep(SMALL_DELAY_MS);
1442	<	threadShouldThrow();
1443	<	}
1444	<	catch (InterruptedException success) {
1441	>	return realCall();
1442	>	} catch (Throwable fail) {
1443	>	threadUnexpectedException(fail);
1444	>	return null;
1445		}
1446		}
1447		}
1448
1449	+	public abstract class CheckedInterruptedCallable<T>
1450	+	implements Callable<T> {
1451	+	protected abstract T realCall() throws Throwable;
1452
1453	<	class MediumRunnable implements Runnable {
487	<	public void run() {
1453	>	public final T call() {
1454		try {
1455	<	Thread.sleep(MEDIUM_DELAY_MS);
1456	<	}
1457	<	catch (Exception e) {
1458	<	threadUnexpectedException(e);
1455	>	T result = realCall();
1456	>	threadShouldThrow("InterruptedException");
1457	>	return result;
1458	>	} catch (InterruptedException success) {
1459	>	threadAssertFalse(Thread.interrupted());
1460	>	} catch (Throwable fail) {
1461	>	threadUnexpectedException(fail);
1462		}
1463	+	return null;
1464		}
1465		}
1466
1467	<	class MediumInterruptedRunnable implements Runnable {
1468	<	public void run() {
1467	>	public static class NoOpRunnable implements Runnable {
1468	>	public void run() {}
1469	>	}
1470	>
1471	>	public static class NoOpCallable implements Callable {
1472	>	public Object call() { return Boolean.TRUE; }
1473	>	}
1474	>
1475	>	public static final String TEST_STRING = "a test string";
1476	>
1477	>	public static class StringTask implements Callable<String> {
1478	>	final String value;
1479	>	public StringTask() { this(TEST_STRING); }
1480	>	public StringTask(String value) { this.value = value; }
1481	>	public String call() { return value; }
1482	>	}
1483	>
1484	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1485	>	return new CheckedCallable<String>() {
1486	>	protected String realCall() {
1487	>	try {
1488	>	latch.await();
1489	>	} catch (InterruptedException quittingTime) {}
1490	>	return TEST_STRING;
1491	>	}};
1492	>	}
1493	>
1494	>	public Runnable countDowner(final CountDownLatch latch) {
1495	>	return new CheckedRunnable() {
1496	>	public void realRun() throws InterruptedException {
1497	>	latch.countDown();
1498	>	}};
1499	>	}
1500	>
1501	>	class LatchAwaiter extends CheckedRunnable {
1502	>	static final int NEW = 0;
1503	>	static final int RUNNING = 1;
1504	>	static final int DONE = 2;
1505	>	final CountDownLatch latch;
1506	>	int state = NEW;
1507	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1508	>	public void realRun() throws InterruptedException {
1509	>	state = 1;
1510	>	await(latch);
1511	>	state = 2;
1512	>	}
1513	>	}
1514	>
1515	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1516	>	return new LatchAwaiter(latch);
1517	>	}
1518	>
1519	>	public void await(CountDownLatch latch, long timeoutMillis) {
1520	>	try {
1521	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1522	>	fail("timed out waiting for CountDownLatch for "
1523	>	+ (timeoutMillis/1000) + " sec");
1524	>	} catch (Throwable fail) {
1525	>	threadUnexpectedException(fail);
1526	>	}
1527	>	}
1528	>
1529	>	public void await(CountDownLatch latch) {
1530	>	await(latch, LONG_DELAY_MS);
1531	>	}
1532	>
1533	>	public void await(Semaphore semaphore) {
1534	>	try {
1535	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1536	>	fail("timed out waiting for Semaphore for "
1537	>	+ (LONG_DELAY_MS/1000) + " sec");
1538	>	} catch (Throwable fail) {
1539	>	threadUnexpectedException(fail);
1540	>	}
1541	>	}
1542	>
1543	>	//     /**
1544	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1545	>	//      */
1546	>	//     public void await(AtomicBoolean flag) {
1547	>	//         await(flag, LONG_DELAY_MS);
1548	>	//     }
1549	>
1550	>	//     /**
1551	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1552	>	//      */
1553	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1554	>	//         long startTime = System.nanoTime();
1555	>	//         while (!flag.get()) {
1556	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1557	>	//                 throw new AssertionFailedError("timed out");
1558	>	//             Thread.yield();
1559	>	//         }
1560	>	//     }
1561	>
1562	>	public static class NPETask implements Callable<String> {
1563	>	public String call() { throw new NullPointerException(); }
1564	>	}
1565	>
1566	>	public static class CallableOne implements Callable<Integer> {
1567	>	public Integer call() { return one; }
1568	>	}
1569	>
1570	>	public class ShortRunnable extends CheckedRunnable {
1571	>	protected void realRun() throws Throwable {
1572	>	delay(SHORT_DELAY_MS);
1573	>	}
1574	>	}
1575	>
1576	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1577	>	protected void realRun() throws InterruptedException {
1578	>	delay(SHORT_DELAY_MS);
1579	>	}
1580	>	}
1581	>
1582	>	public class SmallRunnable extends CheckedRunnable {
1583	>	protected void realRun() throws Throwable {
1584	>	delay(SMALL_DELAY_MS);
1585	>	}
1586	>	}
1587	>
1588	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1589	>	protected void realRun() {
1590		try {
1591	<	Thread.sleep(MEDIUM_DELAY_MS);
1592	<	threadShouldThrow();
502	<	}
503	<	catch (InterruptedException success) {
504	<	}
1591	>	delay(SMALL_DELAY_MS);
1592	>	} catch (InterruptedException ok) {}
1593		}
1594		}
1595
1596	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1597	<	public void run() {
1596	>	public class SmallCallable extends CheckedCallable {
1597	>	protected Object realCall() throws InterruptedException {
1598	>	delay(SMALL_DELAY_MS);
1599	>	return Boolean.TRUE;
1600	>	}
1601	>	}
1602	>
1603	>	public class MediumRunnable extends CheckedRunnable {
1604	>	protected void realRun() throws Throwable {
1605	>	delay(MEDIUM_DELAY_MS);
1606	>	}
1607	>	}
1608	>
1609	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1610	>	protected void realRun() throws InterruptedException {
1611	>	delay(MEDIUM_DELAY_MS);
1612	>	}
1613	>	}
1614	>
1615	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1616	>	return new CheckedRunnable() {
1617	>	protected void realRun() {
1618	>	try {
1619	>	delay(timeoutMillis);
1620	>	} catch (InterruptedException ok) {}
1621	>	}};
1622	>	}
1623	>
1624	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1625	>	protected void realRun() {
1626		try {
1627	<	Thread.sleep(MEDIUM_DELAY_MS);
1628	<	}
513	<	catch (InterruptedException success) {
514	<	}
1627	>	delay(MEDIUM_DELAY_MS);
1628	>	} catch (InterruptedException ok) {}
1629		}
1630		}
1631
1632	<	class LongPossiblyInterruptedRunnable implements Runnable {
1633	<	public void run() {
1632	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1633	>	protected void realRun() {
1634		try {
1635	<	Thread.sleep(LONG_DELAY_MS);
1636	<	}
523	<	catch (InterruptedException success) {
524	<	}
1635	>	delay(LONG_DELAY_MS);
1636	>	} catch (InterruptedException ok) {}
1637		}
1638		}
1639
1640		/**
1641		* For use as ThreadFactory in constructors
1642		*/
1643	<	static class SimpleThreadFactory implements ThreadFactory {
1643	>	public static class SimpleThreadFactory implements ThreadFactory {
1644		public Thread newThread(Runnable r) {
1645		return new Thread(r);
1646		}
1647		}
1648
1649	<	static class TrackedShortRunnable implements Runnable {
1650	<	volatile boolean done = false;
1649	>	public interface TrackedRunnable extends Runnable {
1650	>	boolean isDone();
1651	>	}
1652	>
1653	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1654	>	return new TrackedRunnable() {
1655	>	private volatile boolean done = false;
1656	>	public boolean isDone() { return done; }
1657	>	public void run() {
1658	>	try {
1659	>	delay(timeoutMillis);
1660	>	done = true;
1661	>	} catch (InterruptedException ok) {}
1662	>	}
1663	>	};
1664	>	}
1665	>
1666	>	public static class TrackedShortRunnable implements Runnable {
1667	>	public volatile boolean done = false;
1668		public void run() {
1669		try {
1670	<	Thread.sleep(SMALL_DELAY_MS);
1670	>	delay(SHORT_DELAY_MS);
1671		done = true;
1672	<	} catch (Exception e) {
544	<	}
1672	>	} catch (InterruptedException ok) {}
1673		}
1674		}
1675
1676	<	static class TrackedMediumRunnable implements Runnable {
1677	<	volatile boolean done = false;
1676	>	public static class TrackedSmallRunnable implements Runnable {
1677	>	public volatile boolean done = false;
1678		public void run() {
1679		try {
1680	<	Thread.sleep(MEDIUM_DELAY_MS);
1680	>	delay(SMALL_DELAY_MS);
1681		done = true;
1682	<	} catch (Exception e) {
555	<	}
1682	>	} catch (InterruptedException ok) {}
1683		}
1684		}
1685
1686	<	static class TrackedLongRunnable implements Runnable {
1687	<	volatile boolean done = false;
1686	>	public static class TrackedMediumRunnable implements Runnable {
1687	>	public volatile boolean done = false;
1688		public void run() {
1689		try {
1690	<	Thread.sleep(LONG_DELAY_MS);
1690	>	delay(MEDIUM_DELAY_MS);
1691		done = true;
1692	<	} catch (Exception e) {
1693	<	}
1692	>	} catch (InterruptedException ok) {}
1693	>	}
1694	>	}
1695	>
1696	>	public static class TrackedLongRunnable implements Runnable {
1697	>	public volatile boolean done = false;
1698	>	public void run() {
1699	>	try {
1700	>	delay(LONG_DELAY_MS);
1701	>	done = true;
1702	>	} catch (InterruptedException ok) {}
1703		}
1704		}
1705
1706	<	static class TrackedNoOpRunnable implements Runnable {
1707	<	volatile boolean done = false;
1706	>	public static class TrackedNoOpRunnable implements Runnable {
1707	>	public volatile boolean done = false;
1708		public void run() {
1709		done = true;
1710		}
1711		}
1712
1713	<	static class TrackedCallable implements Callable {
1714	<	volatile boolean done = false;
1713	>	public static class TrackedCallable implements Callable {
1714	>	public volatile boolean done = false;
1715		public Object call() {
1716		try {
1717	<	Thread.sleep(SMALL_DELAY_MS);
1717	>	delay(SMALL_DELAY_MS);
1718		done = true;
1719	<	} catch (Exception e) {
584	<	}
1719	>	} catch (InterruptedException ok) {}
1720		return Boolean.TRUE;
1721		}
1722		}
1723
1724	+	/**
1725	+	* Analog of CheckedRunnable for RecursiveAction
1726	+	*/
1727	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1728	+	protected abstract void realCompute() throws Throwable;
1729	+
1730	+	@Override protected final void compute() {
1731	+	try {
1732	+	realCompute();
1733	+	} catch (Throwable fail) {
1734	+	threadUnexpectedException(fail);
1735	+	}
1736	+	}
1737	+	}
1738	+
1739	+	/**
1740	+	* Analog of CheckedCallable for RecursiveTask
1741	+	*/
1742	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1743	+	protected abstract T realCompute() throws Throwable;
1744	+
1745	+	@Override protected final T compute() {
1746	+	try {
1747	+	return realCompute();
1748	+	} catch (Throwable fail) {
1749	+	threadUnexpectedException(fail);
1750	+	return null;
1751	+	}
1752	+	}
1753	+	}
1754
1755		/**
1756		* For use as RejectedExecutionHandler in constructors
1757		*/
1758	<	static class NoOpREHandler implements RejectedExecutionHandler {
1759	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1758	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1759	>	public void rejectedExecution(Runnable r,
1760	>	ThreadPoolExecutor executor) {}
1761	>	}
1762	>
1763	>	/**
1764	>	* A CyclicBarrier that uses timed await and fails with
1765	>	* AssertionFailedErrors instead of throwing checked exceptions.
1766	>	*/
1767	>	public static class CheckedBarrier extends CyclicBarrier {
1768	>	public CheckedBarrier(int parties) { super(parties); }
1769	>
1770	>	public int await() {
1771	>	try {
1772	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1773	>	} catch (TimeoutException timedOut) {
1774	>	throw new AssertionFailedError("timed out");
1775	>	} catch (Exception fail) {
1776	>	AssertionFailedError afe =
1777	>	new AssertionFailedError("Unexpected exception: " + fail);
1778	>	afe.initCause(fail);
1779	>	throw afe;
1780	>	}
1781	>	}
1782	>	}
1783	>
1784	>	void checkEmpty(BlockingQueue q) {
1785	>	try {
1786	>	assertTrue(q.isEmpty());
1787	>	assertEquals(0, q.size());
1788	>	assertNull(q.peek());
1789	>	assertNull(q.poll());
1790	>	assertNull(q.poll(0, MILLISECONDS));
1791	>	assertEquals(q.toString(), "[]");
1792	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1793	>	assertFalse(q.iterator().hasNext());
1794	>	try {
1795	>	q.element();
1796	>	shouldThrow();
1797	>	} catch (NoSuchElementException success) {}
1798	>	try {
1799	>	q.iterator().next();
1800	>	shouldThrow();
1801	>	} catch (NoSuchElementException success) {}
1802	>	try {
1803	>	q.remove();
1804	>	shouldThrow();
1805	>	} catch (NoSuchElementException success) {}
1806	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1807	>	}
1808	>
1809	>	void assertSerialEquals(Object x, Object y) {
1810	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1811		}
1812
1813	+	void assertNotSerialEquals(Object x, Object y) {
1814	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1815	+	}
1816	+
1817	+	byte[] serialBytes(Object o) {
1818	+	try {
1819	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1820	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1821	+	oos.writeObject(o);
1822	+	oos.flush();
1823	+	oos.close();
1824	+	return bos.toByteArray();
1825	+	} catch (Throwable fail) {
1826	+	threadUnexpectedException(fail);
1827	+	return new byte[0];
1828	+	}
1829	+	}
1830	+
1831	+	void assertImmutable(Object o) {
1832	+	if (o instanceof Collection) {
1833	+	assertThrows(
1834	+	UnsupportedOperationException.class,
1835	+	new Runnable() { public void run() {
1836	+	((Collection) o).add(null);}});
1837	+	}
1838	+	}
1839	+
1840	+	@SuppressWarnings("unchecked")
1841	+	<T> T serialClone(T o) {
1842	+	try {
1843	+	ObjectInputStream ois = new ObjectInputStream
1844	+	(new ByteArrayInputStream(serialBytes(o)));
1845	+	T clone = (T) ois.readObject();
1846	+	if (o == clone) assertImmutable(o);
1847	+	assertSame(o.getClass(), clone.getClass());
1848	+	return clone;
1849	+	} catch (Throwable fail) {
1850	+	threadUnexpectedException(fail);
1851	+	return null;
1852	+	}
1853	+	}
1854	+
1855	+	/**
1856	+	* If o implements Cloneable and has a public clone method,
1857	+	* returns a clone of o, else null.
1858	+	*/
1859	+	@SuppressWarnings("unchecked")
1860	+	<T> T cloneableClone(T o) {
1861	+	if (!(o instanceof Cloneable)) return null;
1862	+	final T clone;
1863	+	try {
1864	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1865	+	} catch (NoSuchMethodException ok) {
1866	+	return null;
1867	+	} catch (ReflectiveOperationException unexpected) {
1868	+	throw new Error(unexpected);
1869	+	}
1870	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1871	+	assertSame(o.getClass(), clone.getClass());
1872	+	return clone;
1873	+	}
1874	+
1875	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1876	+	Runnable... throwingActions) {
1877	+	for (Runnable throwingAction : throwingActions) {
1878	+	boolean threw = false;
1879	+	try { throwingAction.run(); }
1880	+	catch (Throwable t) {
1881	+	threw = true;
1882	+	if (!expectedExceptionClass.isInstance(t)) {
1883	+	AssertionFailedError afe =
1884	+	new AssertionFailedError
1885	+	("Expected " + expectedExceptionClass.getName() +
1886	+	", got " + t.getClass().getName());
1887	+	afe.initCause(t);
1888	+	threadUnexpectedException(afe);
1889	+	}
1890	+	}
1891	+	if (!threw)
1892	+	shouldThrow(expectedExceptionClass.getName());
1893	+	}
1894	+	}
1895	+
1896	+	public void assertIteratorExhausted(Iterator<?> it) {
1897	+	try {
1898	+	it.next();
1899	+	shouldThrow();
1900	+	} catch (NoSuchElementException success) {}
1901	+	assertFalse(it.hasNext());
1902	+	}
1903
1904	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1905	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1906	+	}
1907	+
1908	+	public Runnable runnableThrowing(final RuntimeException ex) {
1909	+	return new Runnable() { public void run() { throw ex; }};
1910	+	}
1911	+
1912	+	/** A reusable thread pool to be shared by tests. */
1913	+	static final ExecutorService cachedThreadPool =
1914	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1915	+	1000L, MILLISECONDS,
1916	+	new SynchronousQueue<Runnable>());
1917	+
1918	+	static <T> void shuffle(T[] array) {
1919	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1920	+	}
1921		}

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