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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.30 by dl, Thu Apr 20 20:35:00 2006 UTC vs.
Revision 1.214 by jsr166, Fri Dec 9 07:26:04 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 (conformance testing mode)
12	>	* @build *
13	>	* @modules java.management
14	>	* @run junit/othervm/timeout=1000 JSR166TestCase
15	>	*/
16	>
17	>	/*
18	>	* @test
19	>	* @summary JSR-166 tck tests (whitebox tests allowed)
20	>	* @build *
21	>	* @modules java.base/java.util.concurrent:open
22	>	*          java.management
23	>	* @run junit/othervm/timeout=1000
24	>	*      -Djsr166.testImplementationDetails=true
25	>	*      JSR166TestCase
26	>	* @run junit/othervm/timeout=1000
27	>	*      -Djsr166.testImplementationDetails=true
28	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
29	>	*      JSR166TestCase
30	>	* @run junit/othervm/timeout=1000
31	>	*      -Djsr166.testImplementationDetails=true
32	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
33	>	*      -Djava.util.secureRandomSeed=true
34	>	*      JSR166TestCase
35	>	*/
36	>
37	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
38	>	import static java.util.concurrent.TimeUnit.MINUTES;
39	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
40	>
41	>	import java.io.ByteArrayInputStream;
42	>	import java.io.ByteArrayOutputStream;
43	>	import java.io.ObjectInputStream;
44	>	import java.io.ObjectOutputStream;
45	>	import java.lang.management.ManagementFactory;
46	>	import java.lang.management.ThreadInfo;
47	>	import java.lang.management.ThreadMXBean;
48	>	import java.lang.reflect.Constructor;
49	>	import java.lang.reflect.Method;
50	>	import java.lang.reflect.Modifier;
51	>	import java.nio.file.Files;
52	>	import java.nio.file.Paths;
53	>	import java.security.CodeSource;
54	>	import java.security.Permission;
55	>	import java.security.PermissionCollection;
56	>	import java.security.Permissions;
57	>	import java.security.Policy;
58	>	import java.security.ProtectionDomain;
59	>	import java.security.SecurityPermission;
60	>	import java.util.ArrayList;
61	>	import java.util.Arrays;
62	>	import java.util.Collection;
63	>	import java.util.Collections;
64	>	import java.util.Date;
65	>	import java.util.Enumeration;
66	>	import java.util.Iterator;
67	>	import java.util.List;
68	>	import java.util.NoSuchElementException;
69	>	import java.util.PropertyPermission;
70	>	import java.util.concurrent.BlockingQueue;
71	>	import java.util.concurrent.Callable;
72	>	import java.util.concurrent.CountDownLatch;
73	>	import java.util.concurrent.CyclicBarrier;
74	>	import java.util.concurrent.ExecutionException;
75	>	import java.util.concurrent.Executors;
76	>	import java.util.concurrent.ExecutorService;
77	>	import java.util.concurrent.ForkJoinPool;
78	>	import java.util.concurrent.Future;
79	>	import java.util.concurrent.RecursiveAction;
80	>	import java.util.concurrent.RecursiveTask;
81	>	import java.util.concurrent.RejectedExecutionHandler;
82	>	import java.util.concurrent.Semaphore;
83	>	import java.util.concurrent.SynchronousQueue;
84	>	import java.util.concurrent.ThreadFactory;
85	>	import java.util.concurrent.ThreadLocalRandom;
86	>	import java.util.concurrent.ThreadPoolExecutor;
87	>	import java.util.concurrent.TimeoutException;
88	>	import java.util.concurrent.atomic.AtomicBoolean;
89	>	import java.util.concurrent.atomic.AtomicReference;
90	>	import java.util.regex.Matcher;
91	>	import java.util.regex.Pattern;
92	>
93	>	import junit.framework.AssertionFailedError;
94	>	import junit.framework.Test;
95	>	import junit.framework.TestCase;
96	>	import junit.framework.TestResult;
97	>	import junit.framework.TestSuite;
98
99		/**
100		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 22 | Line 106 | import java.security.*;
106		*
107		* <ol>
108		*
109	<	* <li> All assertions in code running in generated threads must use
109	>	* <li>All assertions in code running in generated threads must use
110		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
111		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
112	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
112	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
113		* particularly recommended) for other code to use these forms too.
114		* Only the most typically used JUnit assertion methods are defined
115	<	* this way, but enough to live with.</li>
115	>	* this way, but enough to live with.
116		*
117	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
118	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
117	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
118	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
119		* them. These methods are used to clear and check for thread
120	<	* assertion failures.</li>
120	>	* assertion failures.
121		*
122	<	* <li>All delays and timeouts must use one of the constants <tt>
123	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
124	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
122	>	* <li>All delays and timeouts must use one of the constants {@code
123	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
124	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
125		* discriminable from zero time, and always allows enough time for the
126		* small amounts of computation (creating a thread, calling a few
127		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
128		* is always discriminable as larger than SHORT and smaller than
129		* MEDIUM.  And so on. These constants are set to conservative values,
130		* but even so, if there is ever any doubt, they can all be increased
131	<	* in one spot to rerun tests on slower platforms.</li>
131	>	* in one spot to rerun tests on slower platforms.
132		*
133	<	* <li> All threads generated must be joined inside each test case
134	<	* method (or <tt>fail</tt> to do so) before returning from the
135	<	* method. The <tt> joinPool</tt> method can be used to do this when
136	<	* using Executors.</li>
133	>	* <li>All threads generated must be joined inside each test case
134	>	* method (or {@code fail} to do so) before returning from the
135	>	* method. The {@code joinPool} method can be used to do this when
136	>	* using Executors.
137		*
138		* </ol>
139		*
140	<	* <p> <b>Other notes</b>
140	>	* <p><b>Other notes</b>
141		* <ul>
142		*
143	<	* <li> Usually, there is one testcase method per JSR166 method
143	>	* <li>Usually, there is one testcase method per JSR166 method
144		* covering "normal" operation, and then as many exception-testing
145		* methods as there are exceptions the method can throw. Sometimes
146		* there are multiple tests per JSR166 method when the different
147		* "normal" behaviors differ significantly. And sometimes testcases
148	<	* cover multiple methods when they cannot be tested in
65	<	* isolation.</li>
148	>	* cover multiple methods when they cannot be tested in isolation.
149		*
150	<	* <li> The documentation style for testcases is to provide as javadoc
150	>	* <li>The documentation style for testcases is to provide as javadoc
151		* a simple sentence or two describing the property that the testcase
152		* method purports to test. The javadocs do not say anything about how
153	<	* the property is tested. To find out, read the code.</li>
153	>	* the property is tested. To find out, read the code.
154		*
155	<	* <li> These tests are "conformance tests", and do not attempt to
155	>	* <li>These tests are "conformance tests", and do not attempt to
156		* test throughput, latency, scalability or other performance factors
157		* (see the separate "jtreg" tests for a set intended to check these
158		* for the most central aspects of functionality.) So, most tests use
159		* the smallest sensible numbers of threads, collection sizes, etc
160	<	* needed to check basic conformance.</li>
160	>	* needed to check basic conformance.
161		*
162		* <li>The test classes currently do not declare inclusion in
163		* any particular package to simplify things for people integrating
164	<	* them in TCK test suites.</li>
164	>	* them in TCK test suites.
165		*
166	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
167	<	* runs all JSR166 unit tests.</li>
166	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
167	>	* runs all JSR166 unit tests.
168		*
169		* </ul>
170		*/
171		public class JSR166TestCase extends TestCase {
172	+	private static final boolean useSecurityManager =
173	+	Boolean.getBoolean("jsr166.useSecurityManager");
174	+
175	+	protected static final boolean expensiveTests =
176	+	Boolean.getBoolean("jsr166.expensiveTests");
177	+
178	+	/**
179	+	* If true, also run tests that are not part of the official tck
180	+	* because they test unspecified implementation details.
181	+	*/
182	+	protected static final boolean testImplementationDetails =
183	+	Boolean.getBoolean("jsr166.testImplementationDetails");
184	+
185		/**
186	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
186	>	* If true, report on stdout all "slow" tests, that is, ones that
187	>	* take more than profileThreshold milliseconds to execute.
188		*/
189	<	public static void main (String[] args) {
190	<	int iters = 1;
191	<	if (args.length > 0)
192	<	iters = Integer.parseInt(args[0]);
193	<	Test s = suite();
194	<	for (int i = 0; i < iters; ++i) {
195	<	junit.textui.TestRunner.run (s);
189	>	private static final boolean profileTests =
190	>	Boolean.getBoolean("jsr166.profileTests");
191	>
192	>	/**
193	>	* The number of milliseconds that tests are permitted for
194	>	* execution without being reported, when profileTests is set.
195	>	*/
196	>	private static final long profileThreshold =
197	>	Long.getLong("jsr166.profileThreshold", 100);
198	>
199	>	/**
200	>	* The number of repetitions per test (for tickling rare bugs).
201	>	*/
202	>	private static final int runsPerTest =
203	>	Integer.getInteger("jsr166.runsPerTest", 1);
204	>
205	>	/**
206	>	* The number of repetitions of the test suite (for finding leaks?).
207	>	*/
208	>	private static final int suiteRuns =
209	>	Integer.getInteger("jsr166.suiteRuns", 1);
210	>
211	>	/**
212	>	* Returns the value of the system property, or NaN if not defined.
213	>	*/
214	>	private static float systemPropertyValue(String name) {
215	>	String floatString = System.getProperty(name);
216	>	if (floatString == null)
217	>	return Float.NaN;
218	>	try {
219	>	return Float.parseFloat(floatString);
220	>	} catch (NumberFormatException ex) {
221	>	throw new IllegalArgumentException(
222	>	String.format("Bad float value in system property %s=%s",
223	>	name, floatString));
224	>	}
225	>	}
226	>
227	>	/**
228	>	* The scaling factor to apply to standard delays used in tests.
229	>	* May be initialized from any of:
230	>	* - the "jsr166.delay.factor" system property
231	>	* - the "test.timeout.factor" system property (as used by jtreg)
232	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
233	>	* - hard-coded fuzz factor when using a known slowpoke VM
234	>	*/
235	>	private static final float delayFactor = delayFactor();
236	>
237	>	private static float delayFactor() {
238	>	float x;
239	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
240	>	return x;
241	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
242	>	return x;
243	>	String prop = System.getProperty("java.vm.version");
244	>	if (prop != null && prop.matches(".*debug.*"))
245	>	return 4.0f; // How much slower is fastdebug than product?!
246	>	return 1.0f;
247	>	}
248	>
249	>	public JSR166TestCase() { super(); }
250	>	public JSR166TestCase(String name) { super(name); }
251	>
252	>	/**
253	>	* A filter for tests to run, matching strings of the form
254	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
255	>	* Usefully combined with jsr166.runsPerTest.
256	>	*/
257	>	private static final Pattern methodFilter = methodFilter();
258	>
259	>	private static Pattern methodFilter() {
260	>	String regex = System.getProperty("jsr166.methodFilter");
261	>	return (regex == null) ? null : Pattern.compile(regex);
262	>	}
263	>
264	>	// Instrumentation to debug very rare, but very annoying hung test runs.
265	>	static volatile TestCase currentTestCase;
266	>	// static volatile int currentRun = 0;
267	>	static {
268	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
269	>	// Avoid spurious reports with enormous runsPerTest.
270	>	// A single test case run should never take more than 1 second.
271	>	// But let's cap it at the high end too ...
272	>	final int timeoutMinutes =
273	>	Math.min(15, Math.max(runsPerTest / 60, 1));
274	>	for (TestCase lastTestCase = currentTestCase;;) {
275	>	try { MINUTES.sleep(timeoutMinutes); }
276	>	catch (InterruptedException unexpected) { break; }
277	>	if (lastTestCase == currentTestCase) {
278	>	System.err.printf(
279	>	"Looks like we're stuck running test: %s%n",
280	>	lastTestCase);
281	>	//                     System.err.printf(
282	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
283	>	//                         lastTestCase, currentRun, runsPerTest);
284	>	//                     System.err.println("availableProcessors=" +
285	>	//                         Runtime.getRuntime().availableProcessors());
286	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
287	>	dumpTestThreads();
288	>	// one stack dump is probably enough; more would be spam
289	>	break;
290	>	}
291	>	lastTestCase = currentTestCase;
292	>	}}};
293	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
294	>	thread.setDaemon(true);
295	>	thread.start();
296	>	}
297	>
298	>	//     public static String cpuModel() {
299	>	//         try {
300	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
301	>	//                 .matcher(new String(
302	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
303	>	//             matcher.find();
304	>	//             return matcher.group(1);
305	>	//         } catch (Exception ex) { return null; }
306	>	//     }
307	>
308	>	public void runBare() throws Throwable {
309	>	currentTestCase = this;
310	>	if (methodFilter == null
311	>	|| methodFilter.matcher(toString()).find())
312	>	super.runBare();
313	>	}
314	>
315	>	protected void runTest() throws Throwable {
316	>	for (int i = 0; i < runsPerTest; i++) {
317	>	// currentRun = i;
318	>	if (profileTests)
319	>	runTestProfiled();
320	>	else
321	>	super.runTest();
322	>	}
323	>	}
324	>
325	>	protected void runTestProfiled() throws Throwable {
326	>	for (int i = 0; i < 2; i++) {
327	>	long startTime = System.nanoTime();
328	>	super.runTest();
329	>	long elapsedMillis = millisElapsedSince(startTime);
330	>	if (elapsedMillis < profileThreshold)
331	>	break;
332	>	// Never report first run of any test; treat it as a
333	>	// warmup run, notably to trigger all needed classloading,
334	>	if (i > 0)
335	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
336	>	}
337	>	}
338	>
339	>	/**
340	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
341	>	*/
342	>	public static void main(String[] args) {
343	>	main(suite(), args);
344	>	}
345	>
346	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
347	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
348	>	long runTime;
349	>	public void startTest(Test test) {}
350	>	protected void printHeader(long runTime) {
351	>	this.runTime = runTime; // defer printing for later
352	>	}
353	>	protected void printFooter(TestResult result) {
354	>	if (result.wasSuccessful()) {
355	>	getWriter().println("OK (" + result.runCount() + " tests)"
356	>	+ "  Time: " + elapsedTimeAsString(runTime));
357	>	} else {
358	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
359	>	super.printFooter(result);
360	>	}
361	>	}
362	>	}
363	>
364	>	/**
365	>	* Returns a TestRunner that doesn't bother with unnecessary
366	>	* fluff, like printing a "." for each test case.
367	>	*/
368	>	static junit.textui.TestRunner newPithyTestRunner() {
369	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
370	>	runner.setPrinter(new PithyResultPrinter(System.out));
371	>	return runner;
372	>	}
373	>
374	>	/**
375	>	* Runs all unit tests in the given test suite.
376	>	* Actual behavior influenced by jsr166.* system properties.
377	>	*/
378	>	static void main(Test suite, String[] args) {
379	>	if (useSecurityManager) {
380	>	System.err.println("Setting a permissive security manager");
381	>	Policy.setPolicy(permissivePolicy());
382	>	System.setSecurityManager(new SecurityManager());
383	>	}
384	>	for (int i = 0; i < suiteRuns; i++) {
385	>	TestResult result = newPithyTestRunner().doRun(suite);
386	>	if (!result.wasSuccessful())
387	>	System.exit(1);
388		System.gc();
389		System.runFinalization();
390		}
102	–	System.exit(0);
391		}
392
393	<	/**
394	<	* Collects all JSR166 unit tests as one suite
395	<	*/
396	<	public static Test suite ( ) {
397	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
393	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
394	>	TestSuite suite = new TestSuite();
395	>	for (Object suiteOrClass : suiteOrClasses) {
396	>	if (suiteOrClass instanceof TestSuite)
397	>	suite.addTest((TestSuite) suiteOrClass);
398	>	else if (suiteOrClass instanceof Class)
399	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
400	>	else
401	>	throw new ClassCastException("not a test suite or class");
402	>	}
403	>	return suite;
404	>	}
405
406	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
407	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
408	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
409	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
410	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
411	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
412	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
413	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
414	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
415	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
416	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
417	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
418	<	suite.addTest(new TestSuite(AtomicLongTest.class));
419	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
420	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
421	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
422	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
423	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
424	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
425	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
426	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
427	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
428	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
429	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
430	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
431	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
432	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
433	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
434	<	suite.addTest(new TestSuite(DelayQueueTest.class));
435	<	suite.addTest(new TestSuite(EntryTest.class));
436	<	suite.addTest(new TestSuite(ExchangerTest.class));
437	<	suite.addTest(new TestSuite(ExecutorsTest.class));
438	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
439	<	suite.addTest(new TestSuite(FutureTaskTest.class));
440	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
441	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
442	<	suite.addTest(new TestSuite(LinkedListTest.class));
443	<	suite.addTest(new TestSuite(LockSupportTest.class));
444	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
445	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
446	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
447	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
448	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
449	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
450	<	suite.addTest(new TestSuite(SemaphoreTest.class));
451	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
452	<	suite.addTest(new TestSuite(SystemTest.class));
453	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
454	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
455	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
456	<	suite.addTest(new TestSuite(ThreadTest.class));
457	<	suite.addTest(new TestSuite(TimeUnitTest.class));
458	<	suite.addTest(new TestSuite(TreeMapTest.class));
459	<	suite.addTest(new TestSuite(TreeSetTest.class));
460	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
461	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
406	>	public static void addNamedTestClasses(TestSuite suite,
407	>	String... testClassNames) {
408	>	for (String testClassName : testClassNames) {
409	>	try {
410	>	Class<?> testClass = Class.forName(testClassName);
411	>	Method m = testClass.getDeclaredMethod("suite",
412	>	new Class<?>[0]);
413	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
414	>	} catch (Exception e) {
415	>	throw new Error("Missing test class", e);
416	>	}
417	>	}
418	>	}
419	>
420	>	public static final double JAVA_CLASS_VERSION;
421	>	public static final String JAVA_SPECIFICATION_VERSION;
422	>	static {
423	>	try {
424	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
425	>	new java.security.PrivilegedAction<Double>() {
426	>	public Double run() {
427	>	return Double.valueOf(System.getProperty("java.class.version"));}});
428	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
429	>	new java.security.PrivilegedAction<String>() {
430	>	public String run() {
431	>	return System.getProperty("java.specification.version");}});
432	>	} catch (Throwable t) {
433	>	throw new Error(t);
434	>	}
435	>	}
436	>
437	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
438	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
439	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
440	>	public static boolean atLeastJava9() {
441	>	return JAVA_CLASS_VERSION >= 53.0
442	>	// As of 2015-09, java9 still uses 52.0 class file version
443	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
444	>	}
445	>	public static boolean atLeastJava10() {
446	>	return JAVA_CLASS_VERSION >= 54.0
447	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
448	>	}
449	>
450	>	/**
451	>	* Collects all JSR166 unit tests as one suite.
452	>	*/
453	>	public static Test suite() {
454	>	// Java7+ test classes
455	>	TestSuite suite = newTestSuite(
456	>	ForkJoinPoolTest.suite(),
457	>	ForkJoinTaskTest.suite(),
458	>	RecursiveActionTest.suite(),
459	>	RecursiveTaskTest.suite(),
460	>	LinkedTransferQueueTest.suite(),
461	>	PhaserTest.suite(),
462	>	ThreadLocalRandomTest.suite(),
463	>	AbstractExecutorServiceTest.suite(),
464	>	AbstractQueueTest.suite(),
465	>	AbstractQueuedSynchronizerTest.suite(),
466	>	AbstractQueuedLongSynchronizerTest.suite(),
467	>	ArrayBlockingQueueTest.suite(),
468	>	ArrayDequeTest.suite(),
469	>	ArrayListTest.suite(),
470	>	AtomicBooleanTest.suite(),
471	>	AtomicIntegerArrayTest.suite(),
472	>	AtomicIntegerFieldUpdaterTest.suite(),
473	>	AtomicIntegerTest.suite(),
474	>	AtomicLongArrayTest.suite(),
475	>	AtomicLongFieldUpdaterTest.suite(),
476	>	AtomicLongTest.suite(),
477	>	AtomicMarkableReferenceTest.suite(),
478	>	AtomicReferenceArrayTest.suite(),
479	>	AtomicReferenceFieldUpdaterTest.suite(),
480	>	AtomicReferenceTest.suite(),
481	>	AtomicStampedReferenceTest.suite(),
482	>	ConcurrentHashMapTest.suite(),
483	>	ConcurrentLinkedDequeTest.suite(),
484	>	ConcurrentLinkedQueueTest.suite(),
485	>	ConcurrentSkipListMapTest.suite(),
486	>	ConcurrentSkipListSubMapTest.suite(),
487	>	ConcurrentSkipListSetTest.suite(),
488	>	ConcurrentSkipListSubSetTest.suite(),
489	>	CopyOnWriteArrayListTest.suite(),
490	>	CopyOnWriteArraySetTest.suite(),
491	>	CountDownLatchTest.suite(),
492	>	CountedCompleterTest.suite(),
493	>	CyclicBarrierTest.suite(),
494	>	DelayQueueTest.suite(),
495	>	EntryTest.suite(),
496	>	ExchangerTest.suite(),
497	>	ExecutorsTest.suite(),
498	>	ExecutorCompletionServiceTest.suite(),
499	>	FutureTaskTest.suite(),
500	>	LinkedBlockingDequeTest.suite(),
501	>	LinkedBlockingQueueTest.suite(),
502	>	LinkedListTest.suite(),
503	>	LockSupportTest.suite(),
504	>	PriorityBlockingQueueTest.suite(),
505	>	PriorityQueueTest.suite(),
506	>	ReentrantLockTest.suite(),
507	>	ReentrantReadWriteLockTest.suite(),
508	>	ScheduledExecutorTest.suite(),
509	>	ScheduledExecutorSubclassTest.suite(),
510	>	SemaphoreTest.suite(),
511	>	SynchronousQueueTest.suite(),
512	>	SystemTest.suite(),
513	>	ThreadLocalTest.suite(),
514	>	ThreadPoolExecutorTest.suite(),
515	>	ThreadPoolExecutorSubclassTest.suite(),
516	>	ThreadTest.suite(),
517	>	TimeUnitTest.suite(),
518	>	TreeMapTest.suite(),
519	>	TreeSetTest.suite(),
520	>	TreeSubMapTest.suite(),
521	>	TreeSubSetTest.suite(),
522	>	VectorTest.suite());
523	>
524	>	// Java8+ test classes
525	>	if (atLeastJava8()) {
526	>	String[] java8TestClassNames = {
527	>	"ArrayDeque8Test",
528	>	"Atomic8Test",
529	>	"CompletableFutureTest",
530	>	"ConcurrentHashMap8Test",
531	>	"CountedCompleter8Test",
532	>	"DoubleAccumulatorTest",
533	>	"DoubleAdderTest",
534	>	"ForkJoinPool8Test",
535	>	"ForkJoinTask8Test",
536	>	"LongAccumulatorTest",
537	>	"LongAdderTest",
538	>	"SplittableRandomTest",
539	>	"StampedLockTest",
540	>	"SubmissionPublisherTest",
541	>	"ThreadLocalRandom8Test",
542	>	"TimeUnit8Test",
543	>	};
544	>	addNamedTestClasses(suite, java8TestClassNames);
545	>	}
546	>
547	>	// Java9+ test classes
548	>	if (atLeastJava9()) {
549	>	String[] java9TestClassNames = {
550	>	"AtomicBoolean9Test",
551	>	"AtomicInteger9Test",
552	>	"AtomicIntegerArray9Test",
553	>	"AtomicLong9Test",
554	>	"AtomicLongArray9Test",
555	>	"AtomicReference9Test",
556	>	"AtomicReferenceArray9Test",
557	>	"ExecutorCompletionService9Test",
558	>	};
559	>	addNamedTestClasses(suite, java9TestClassNames);
560	>	}
561
562		return suite;
563		}
564
565	+	/** Returns list of junit-style test method names in given class. */
566	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
567	+	Method[] methods = testClass.getDeclaredMethods();
568	+	ArrayList<String> names = new ArrayList<String>(methods.length);
569	+	for (Method method : methods) {
570	+	if (method.getName().startsWith("test")
571	+	&& Modifier.isPublic(method.getModifiers())
572	+	// method.getParameterCount() requires jdk8+
573	+	&& method.getParameterTypes().length == 0) {
574	+	names.add(method.getName());
575	+	}
576	+	}
577	+	return names;
578	+	}
579	+
580	+	/**
581	+	* Returns junit-style testSuite for the given test class, but
582	+	* parameterized by passing extra data to each test.
583	+	*/
584	+	public static <ExtraData> Test parameterizedTestSuite
585	+	(Class<? extends JSR166TestCase> testClass,
586	+	Class<ExtraData> dataClass,
587	+	ExtraData data) {
588	+	try {
589	+	TestSuite suite = new TestSuite();
590	+	Constructor c =
591	+	testClass.getDeclaredConstructor(dataClass, String.class);
592	+	for (String methodName : testMethodNames(testClass))
593	+	suite.addTest((Test) c.newInstance(data, methodName));
594	+	return suite;
595	+	} catch (Exception e) {
596	+	throw new Error(e);
597	+	}
598	+	}
599	+
600	+	/**
601	+	* Returns junit-style testSuite for the jdk8 extension of the
602	+	* given test class, but parameterized by passing extra data to
603	+	* each test.  Uses reflection to allow compilation in jdk7.
604	+	*/
605	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
606	+	(Class<? extends JSR166TestCase> testClass,
607	+	Class<ExtraData> dataClass,
608	+	ExtraData data) {
609	+	if (atLeastJava8()) {
610	+	String name = testClass.getName();
611	+	String name8 = name.replaceAll("Test$", "8Test");
612	+	if (name.equals(name8)) throw new Error(name);
613	+	try {
614	+	return (Test)
615	+	Class.forName(name8)
616	+	.getMethod("testSuite", new Class[] { dataClass })
617	+	.invoke(null, data);
618	+	} catch (Exception e) {
619	+	throw new Error(e);
620	+	}
621	+	} else {
622	+	return new TestSuite();
623	+	}
624	+	}
625	+
626	+	// Delays for timing-dependent tests, in milliseconds.
627
628		public static long SHORT_DELAY_MS;
629		public static long SMALL_DELAY_MS;
630		public static long MEDIUM_DELAY_MS;
631		public static long LONG_DELAY_MS;
632
177	–
633		/**
634	<	* Returns the shortest timed delay. This could
635	<	* be reimplemented to use for example a Property.
634	>	* Returns the shortest timed delay. This can be scaled up for
635	>	* slow machines using the jsr166.delay.factor system property,
636	>	* or via jtreg's -timeoutFactor: flag.
637	>	* http://openjdk.java.net/jtreg/command-help.html
638		*/
639		protected long getShortDelay() {
640	<	return 50;
640	>	return (long) (50 * delayFactor);
641		}
642
186	–
643		/**
644		* Sets delays as multiples of SHORT_DELAY.
645		*/
646	<	protected  void setDelays() {
646	>	protected void setDelays() {
647		SHORT_DELAY_MS = getShortDelay();
648	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
648	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
649		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
650	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
650	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
651		}
652
653		/**
654	<	* Flag set true if any threadAssert methods fail
654	>	* Returns a timeout in milliseconds to be used in tests that
655	>	* verify that operations block or time out.
656		*/
657	<	volatile boolean threadFailed;
657	>	long timeoutMillis() {
658	>	return SHORT_DELAY_MS / 4;
659	>	}
660
661		/**
662	<	* Initializes test to indicate that no thread assertions have failed
662	>	* Returns a new Date instance representing a time at least
663	>	* delayMillis milliseconds in the future.
664		*/
665	+	Date delayedDate(long delayMillis) {
666	+	// Add 1 because currentTimeMillis is known to round into the past.
667	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
668	+	}
669	+
670	+	/**
671	+	* The first exception encountered if any threadAssertXXX method fails.
672	+	*/
673	+	private final AtomicReference<Throwable> threadFailure
674	+	= new AtomicReference<Throwable>(null);
675	+
676	+	/**
677	+	* Records an exception so that it can be rethrown later in the test
678	+	* harness thread, triggering a test case failure.  Only the first
679	+	* failure is recorded; subsequent calls to this method from within
680	+	* the same test have no effect.
681	+	*/
682	+	public void threadRecordFailure(Throwable t) {
683	+	System.err.println(t);
684	+	dumpTestThreads();
685	+	threadFailure.compareAndSet(null, t);
686	+	}
687	+
688		public void setUp() {
689		setDelays();
690	<	threadFailed = false;
690	>	}
691	>
692	>	void tearDownFail(String format, Object... args) {
693	>	String msg = toString() + ": " + String.format(format, args);
694	>	System.err.println(msg);
695	>	dumpTestThreads();
696	>	throw new AssertionFailedError(msg);
697	>	}
698	>
699	>	/**
700	>	* Extra checks that get done for all test cases.
701	>	*
702	>	* Triggers test case failure if any thread assertions have failed,
703	>	* by rethrowing, in the test harness thread, any exception recorded
704	>	* earlier by threadRecordFailure.
705	>	*
706	>	* Triggers test case failure if interrupt status is set in the main thread.
707	>	*/
708	>	public void tearDown() throws Exception {
709	>	Throwable t = threadFailure.getAndSet(null);
710	>	if (t != null) {
711	>	if (t instanceof Error)
712	>	throw (Error) t;
713	>	else if (t instanceof RuntimeException)
714	>	throw (RuntimeException) t;
715	>	else if (t instanceof Exception)
716	>	throw (Exception) t;
717	>	else {
718	>	AssertionFailedError afe =
719	>	new AssertionFailedError(t.toString());
720	>	afe.initCause(t);
721	>	throw afe;
722	>	}
723	>	}
724	>
725	>	if (Thread.interrupted())
726	>	tearDownFail("interrupt status set in main thread");
727	>
728	>	checkForkJoinPoolThreadLeaks();
729		}
730
731		/**
732	<	* Triggers test case failure if any thread assertions have failed
732	>	* Finds missing PoolCleaners
733		*/
734	<	public void tearDown() {
735	<	assertFalse(threadFailed);
734	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
735	>	Thread[] survivors = new Thread[7];
736	>	int count = Thread.enumerate(survivors);
737	>	for (int i = 0; i < count; i++) {
738	>	Thread thread = survivors[i];
739	>	String name = thread.getName();
740	>	if (name.startsWith("ForkJoinPool-")) {
741	>	// give thread some time to terminate
742	>	thread.join(LONG_DELAY_MS);
743	>	if (thread.isAlive())
744	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
745	>	thread);
746	>	}
747	>	}
748	>
749	>	if (!ForkJoinPool.commonPool()
750	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
751	>	tearDownFail("ForkJoin common pool thread stuck");
752		}
753
754		/**
755	<	* Fail, also setting status to indicate current testcase should fail
755	>	* Just like fail(reason), but additionally recording (using
756	>	* threadRecordFailure) any AssertionFailedError thrown, so that
757	>	* the current testcase will fail.
758		*/
759		public void threadFail(String reason) {
760	<	threadFailed = true;
761	<	fail(reason);
760	>	try {
761	>	fail(reason);
762	>	} catch (AssertionFailedError t) {
763	>	threadRecordFailure(t);
764	>	throw t;
765	>	}
766		}
767
768		/**
769	<	* If expression not true, set status to indicate current testcase
770	<	* should fail
769	>	* Just like assertTrue(b), but additionally recording (using
770	>	* threadRecordFailure) any AssertionFailedError thrown, so that
771	>	* the current testcase will fail.
772		*/
773		public void threadAssertTrue(boolean b) {
774	<	if (!b) {
231	<	threadFailed = true;
774	>	try {
775		assertTrue(b);
776	+	} catch (AssertionFailedError t) {
777	+	threadRecordFailure(t);
778	+	throw t;
779		}
780		}
781
782		/**
783	<	* If expression not false, set status to indicate current testcase
784	<	* should fail
783	>	* Just like assertFalse(b), but additionally recording (using
784	>	* threadRecordFailure) any AssertionFailedError thrown, so that
785	>	* the current testcase will fail.
786		*/
787		public void threadAssertFalse(boolean b) {
788	<	if (b) {
242	<	threadFailed = true;
788	>	try {
789		assertFalse(b);
790	+	} catch (AssertionFailedError t) {
791	+	threadRecordFailure(t);
792	+	throw t;
793		}
794		}
795
796		/**
797	<	* If argument not null, set status to indicate current testcase
798	<	* should fail
797	>	* Just like assertNull(x), but additionally recording (using
798	>	* threadRecordFailure) any AssertionFailedError thrown, so that
799	>	* the current testcase will fail.
800		*/
801		public void threadAssertNull(Object x) {
802	<	if (x != null) {
253	<	threadFailed = true;
802	>	try {
803		assertNull(x);
804	+	} catch (AssertionFailedError t) {
805	+	threadRecordFailure(t);
806	+	throw t;
807		}
808		}
809
810		/**
811	<	* If arguments not equal, set status to indicate current testcase
812	<	* should fail
811	>	* Just like assertEquals(x, y), but additionally recording (using
812	>	* threadRecordFailure) any AssertionFailedError thrown, so that
813	>	* the current testcase will fail.
814		*/
815		public void threadAssertEquals(long x, long y) {
816	<	if (x != y) {
264	<	threadFailed = true;
816	>	try {
817		assertEquals(x, y);
818	+	} catch (AssertionFailedError t) {
819	+	threadRecordFailure(t);
820	+	throw t;
821		}
822		}
823
824		/**
825	<	* If arguments not equal, set status to indicate current testcase
826	<	* should fail
825	>	* Just like assertEquals(x, y), but additionally recording (using
826	>	* threadRecordFailure) any AssertionFailedError thrown, so that
827	>	* the current testcase will fail.
828		*/
829		public void threadAssertEquals(Object x, Object y) {
830	<	if (x != y && (x == null || !x.equals(y))) {
275	<	threadFailed = true;
830	>	try {
831		assertEquals(x, y);
832	+	} catch (AssertionFailedError fail) {
833	+	threadRecordFailure(fail);
834	+	throw fail;
835	+	} catch (Throwable fail) {
836	+	threadUnexpectedException(fail);
837	+	}
838	+	}
839	+
840	+	/**
841	+	* Just like assertSame(x, y), but additionally recording (using
842	+	* threadRecordFailure) any AssertionFailedError thrown, so that
843	+	* the current testcase will fail.
844	+	*/
845	+	public void threadAssertSame(Object x, Object y) {
846	+	try {
847	+	assertSame(x, y);
848	+	} catch (AssertionFailedError fail) {
849	+	threadRecordFailure(fail);
850	+	throw fail;
851		}
852		}
853
854		/**
855	<	* threadFail with message "should throw exception"
855	>	* Calls threadFail with message "should throw exception".
856		*/
857		public void threadShouldThrow() {
858	<	threadFailed = true;
285	<	fail("should throw exception");
858	>	threadFail("should throw exception");
859		}
860
861		/**
862	<	* threadFail with message "Unexpected exception"
862	>	* Calls threadFail with message "should throw" + exceptionName.
863		*/
864	<	public void threadUnexpectedException() {
865	<	threadFailed = true;
293	<	fail("Unexpected exception");
864	>	public void threadShouldThrow(String exceptionName) {
865	>	threadFail("should throw " + exceptionName);
866		}
867
868	+	/**
869	+	* Records the given exception using {@link #threadRecordFailure},
870	+	* then rethrows the exception, wrapping it in an
871	+	* AssertionFailedError if necessary.
872	+	*/
873	+	public void threadUnexpectedException(Throwable t) {
874	+	threadRecordFailure(t);
875	+	t.printStackTrace();
876	+	if (t instanceof RuntimeException)
877	+	throw (RuntimeException) t;
878	+	else if (t instanceof Error)
879	+	throw (Error) t;
880	+	else {
881	+	AssertionFailedError afe =
882	+	new AssertionFailedError("unexpected exception: " + t);
883	+	afe.initCause(t);
884	+	throw afe;
885	+	}
886	+	}
887
888		/**
889	<	* Wait out termination of a thread pool or fail doing so
889	>	* Delays, via Thread.sleep, for the given millisecond delay, but
890	>	* if the sleep is shorter than specified, may re-sleep or yield
891	>	* until time elapses.  Ensures that the given time, as measured
892	>	* by System.nanoTime(), has elapsed.
893		*/
894	<	public void joinPool(ExecutorService exec) {
894	>	static void delay(long millis) throws InterruptedException {
895	>	long nanos = millis * (1000 * 1000);
896	>	final long wakeupTime = System.nanoTime() + nanos;
897	>	do {
898	>	if (millis > 0L)
899	>	Thread.sleep(millis);
900	>	else // too short to sleep
901	>	Thread.yield();
902	>	nanos = wakeupTime - System.nanoTime();
903	>	millis = nanos / (1000 * 1000);
904	>	} while (nanos >= 0L);
905	>	}
906	>
907	>	/**
908	>	* Allows use of try-with-resources with per-test thread pools.
909	>	*/
910	>	class PoolCleaner implements AutoCloseable {
911	>	private final ExecutorService pool;
912	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
913	>	public void close() { joinPool(pool); }
914	>	}
915	>
916	>	/**
917	>	* An extension of PoolCleaner that has an action to release the pool.
918	>	*/
919	>	class PoolCleanerWithReleaser extends PoolCleaner {
920	>	private final Runnable releaser;
921	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
922	>	super(pool);
923	>	this.releaser = releaser;
924	>	}
925	>	public void close() {
926	>	try {
927	>	releaser.run();
928	>	} finally {
929	>	super.close();
930	>	}
931	>	}
932	>	}
933	>
934	>	PoolCleaner cleaner(ExecutorService pool) {
935	>	return new PoolCleaner(pool);
936	>	}
937	>
938	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
939	>	return new PoolCleanerWithReleaser(pool, releaser);
940	>	}
941	>
942	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
943	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
944	>	}
945	>
946	>	Runnable releaser(final CountDownLatch latch) {
947	>	return new Runnable() { public void run() {
948	>	do { latch.countDown(); }
949	>	while (latch.getCount() > 0);
950	>	}};
951	>	}
952	>
953	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
954	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
955	>	}
956	>
957	>	Runnable releaser(final AtomicBoolean flag) {
958	>	return new Runnable() { public void run() { flag.set(true); }};
959	>	}
960	>
961	>	/**
962	>	* Waits out termination of a thread pool or fails doing so.
963	>	*/
964	>	void joinPool(ExecutorService pool) {
965		try {
966	<	exec.shutdown();
967	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
968	<	} catch(SecurityException ok) {
966	>	pool.shutdown();
967	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
968	>	try {
969	>	threadFail("ExecutorService " + pool +
970	>	" did not terminate in a timely manner");
971	>	} finally {
972	>	// last resort, for the benefit of subsequent tests
973	>	pool.shutdownNow();
974	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
975	>	}
976	>	}
977	>	} catch (SecurityException ok) {
978		// Allowed in case test doesn't have privs
979	<	} catch(InterruptedException ie) {
980	<	fail("Unexpected exception");
979	>	} catch (InterruptedException fail) {
980	>	threadFail("Unexpected InterruptedException");
981		}
982		}
983
984	+	/**
985	+	* Like Runnable, but with the freedom to throw anything.
986	+	* junit folks had the same idea:
987	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
988	+	*/
989	+	interface Action { public void run() throws Throwable; }
990
991		/**
992	<	* fail with message "should throw exception"
992	>	* Runs all the given actions in parallel, failing if any fail.
993	>	* Useful for running multiple variants of tests that are
994	>	* necessarily individually slow because they must block.
995	>	*/
996	>	void testInParallel(Action ... actions) {
997	>	ExecutorService pool = Executors.newCachedThreadPool();
998	>	try (PoolCleaner cleaner = cleaner(pool)) {
999	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1000	>	for (final Action action : actions)
1001	>	futures.add(pool.submit(new CheckedRunnable() {
1002	>	public void realRun() throws Throwable { action.run();}}));
1003	>	for (Future<?> future : futures)
1004	>	try {
1005	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1006	>	} catch (ExecutionException ex) {
1007	>	threadUnexpectedException(ex.getCause());
1008	>	} catch (Exception ex) {
1009	>	threadUnexpectedException(ex);
1010	>	}
1011	>	}
1012	>	}
1013	>
1014	>	/**
1015	>	* A debugging tool to print stack traces of most threads, as jstack does.
1016	>	* Uninteresting threads are filtered out.
1017	>	*/
1018	>	static void dumpTestThreads() {
1019	>	SecurityManager sm = System.getSecurityManager();
1020	>	if (sm != null) {
1021	>	try {
1022	>	System.setSecurityManager(null);
1023	>	} catch (SecurityException giveUp) {
1024	>	return;
1025	>	}
1026	>	}
1027	>
1028	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1029	>	System.err.println("------ stacktrace dump start ------");
1030	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1031	>	final String name = info.getThreadName();
1032	>	String lockName;
1033	>	if ("Signal Dispatcher".equals(name))
1034	>	continue;
1035	>	if ("Reference Handler".equals(name)
1036	>	&& (lockName = info.getLockName()) != null
1037	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1038	>	continue;
1039	>	if ("Finalizer".equals(name)
1040	>	&& (lockName = info.getLockName()) != null
1041	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1042	>	continue;
1043	>	if ("checkForWedgedTest".equals(name))
1044	>	continue;
1045	>	System.err.print(info);
1046	>	}
1047	>	System.err.println("------ stacktrace dump end ------");
1048	>
1049	>	if (sm != null) System.setSecurityManager(sm);
1050	>	}
1051	>
1052	>	/**
1053	>	* Checks that thread does not terminate within the default
1054	>	* millisecond delay of {@code timeoutMillis()}.
1055	>	*/
1056	>	void assertThreadStaysAlive(Thread thread) {
1057	>	assertThreadStaysAlive(thread, timeoutMillis());
1058	>	}
1059	>
1060	>	/**
1061	>	* Checks that thread does not terminate within the given millisecond delay.
1062	>	*/
1063	>	void assertThreadStaysAlive(Thread thread, long millis) {
1064	>	try {
1065	>	// No need to optimize the failing case via Thread.join.
1066	>	delay(millis);
1067	>	assertTrue(thread.isAlive());
1068	>	} catch (InterruptedException fail) {
1069	>	threadFail("Unexpected InterruptedException");
1070	>	}
1071	>	}
1072	>
1073	>	/**
1074	>	* Checks that the threads do not terminate within the default
1075	>	* millisecond delay of {@code timeoutMillis()}.
1076	>	*/
1077	>	void assertThreadsStayAlive(Thread... threads) {
1078	>	assertThreadsStayAlive(timeoutMillis(), threads);
1079	>	}
1080	>
1081	>	/**
1082	>	* Checks that the threads do not terminate within the given millisecond delay.
1083	>	*/
1084	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1085	>	try {
1086	>	// No need to optimize the failing case via Thread.join.
1087	>	delay(millis);
1088	>	for (Thread thread : threads)
1089	>	assertTrue(thread.isAlive());
1090	>	} catch (InterruptedException fail) {
1091	>	threadFail("Unexpected InterruptedException");
1092	>	}
1093	>	}
1094	>
1095	>	/**
1096	>	* Checks that future.get times out, with the default timeout of
1097	>	* {@code timeoutMillis()}.
1098	>	*/
1099	>	void assertFutureTimesOut(Future future) {
1100	>	assertFutureTimesOut(future, timeoutMillis());
1101	>	}
1102	>
1103	>	/**
1104	>	* Checks that future.get times out, with the given millisecond timeout.
1105	>	*/
1106	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1107	>	long startTime = System.nanoTime();
1108	>	try {
1109	>	future.get(timeoutMillis, MILLISECONDS);
1110	>	shouldThrow();
1111	>	} catch (TimeoutException success) {
1112	>	} catch (Exception fail) {
1113	>	threadUnexpectedException(fail);
1114	>	} finally { future.cancel(true); }
1115	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1116	>	}
1117	>
1118	>	/**
1119	>	* Fails with message "should throw exception".
1120		*/
1121		public void shouldThrow() {
1122		fail("Should throw exception");
1123		}
1124
1125		/**
1126	<	* fail with message "Unexpected exception"
1126	>	* Fails with message "should throw " + exceptionName.
1127		*/
1128	<	public void unexpectedException() {
1129	<	fail("Unexpected exception");
1128	>	public void shouldThrow(String exceptionName) {
1129	>	fail("Should throw " + exceptionName);
1130		}
1131
326	–
1132		/**
1133		* The number of elements to place in collections, arrays, etc.
1134		*/
1135	<	static final int SIZE = 20;
1135	>	public static final int SIZE = 20;
1136
1137		// Some convenient Integer constants
1138
1139	<	static final Integer zero = new Integer(0);
1140	<	static final Integer one = new Integer(1);
1141	<	static final Integer two = new Integer(2);
1142	<	static final Integer three  = new Integer(3);
1143	<	static final Integer four  = new Integer(4);
1144	<	static final Integer five  = new Integer(5);
1145	<	static final Integer six = new Integer(6);
1146	<	static final Integer seven = new Integer(7);
1147	<	static final Integer eight = new Integer(8);
1148	<	static final Integer nine = new Integer(9);
1149	<	static final Integer m1  = new Integer(-1);
1150	<	static final Integer m2  = new Integer(-2);
1151	<	static final Integer m3  = new Integer(-3);
1152	<	static final Integer m4 = new Integer(-4);
1153	<	static final Integer m5 = new Integer(-5);
1154	<	static final Integer m6 = new Integer(-6);
1155	<	static final Integer m10 = new Integer(-10);
1139	>	public static final Integer zero  = new Integer(0);
1140	>	public static final Integer one   = new Integer(1);
1141	>	public static final Integer two   = new Integer(2);
1142	>	public static final Integer three = new Integer(3);
1143	>	public static final Integer four  = new Integer(4);
1144	>	public static final Integer five  = new Integer(5);
1145	>	public static final Integer six   = new Integer(6);
1146	>	public static final Integer seven = new Integer(7);
1147	>	public static final Integer eight = new Integer(8);
1148	>	public static final Integer nine  = new Integer(9);
1149	>	public static final Integer m1  = new Integer(-1);
1150	>	public static final Integer m2  = new Integer(-2);
1151	>	public static final Integer m3  = new Integer(-3);
1152	>	public static final Integer m4  = new Integer(-4);
1153	>	public static final Integer m5  = new Integer(-5);
1154	>	public static final Integer m6  = new Integer(-6);
1155	>	public static final Integer m10 = new Integer(-10);
1156	>
1157	>	/**
1158	>	* Runs Runnable r with a security policy that permits precisely
1159	>	* the specified permissions.  If there is no current security
1160	>	* manager, the runnable is run twice, both with and without a
1161	>	* security manager.  We require that any security manager permit
1162	>	* getPolicy/setPolicy.
1163	>	*/
1164	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1165	>	SecurityManager sm = System.getSecurityManager();
1166	>	if (sm == null) {
1167	>	r.run();
1168	>	}
1169	>	runWithSecurityManagerWithPermissions(r, permissions);
1170	>	}
1171	>
1172	>	/**
1173	>	* Runs Runnable r with a security policy that permits precisely
1174	>	* the specified permissions.  If there is no current security
1175	>	* manager, a temporary one is set for the duration of the
1176	>	* Runnable.  We require that any security manager permit
1177	>	* getPolicy/setPolicy.
1178	>	*/
1179	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1180	>	Permission... permissions) {
1181	>	SecurityManager sm = System.getSecurityManager();
1182	>	if (sm == null) {
1183	>	Policy savedPolicy = Policy.getPolicy();
1184	>	try {
1185	>	Policy.setPolicy(permissivePolicy());
1186	>	System.setSecurityManager(new SecurityManager());
1187	>	runWithSecurityManagerWithPermissions(r, permissions);
1188	>	} finally {
1189	>	System.setSecurityManager(null);
1190	>	Policy.setPolicy(savedPolicy);
1191	>	}
1192	>	} else {
1193	>	Policy savedPolicy = Policy.getPolicy();
1194	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1195	>	Policy.setPolicy(policy);
1196	>
1197	>	try {
1198	>	r.run();
1199	>	} finally {
1200	>	policy.addPermission(new SecurityPermission("setPolicy"));
1201	>	Policy.setPolicy(savedPolicy);
1202	>	}
1203	>	}
1204	>	}
1205
1206	+	/**
1207	+	* Runs a runnable without any permissions.
1208	+	*/
1209	+	public void runWithoutPermissions(Runnable r) {
1210	+	runWithPermissions(r);
1211	+	}
1212
1213		/**
1214		* A security policy where new permissions can be dynamically added
1215		* or all cleared.
1216		*/
1217	<	static class AdjustablePolicy extends java.security.Policy {
1217	>	public static class AdjustablePolicy extends java.security.Policy {
1218		Permissions perms = new Permissions();
1219	<	AdjustablePolicy() { }
1219	>	AdjustablePolicy(Permission... permissions) {
1220	>	for (Permission permission : permissions)
1221	>	perms.add(permission);
1222	>	}
1223		void addPermission(Permission perm) { perms.add(perm); }
1224		void clearPermissions() { perms = new Permissions(); }
1225	<	public PermissionCollection getPermissions(CodeSource cs) {
1226	<	return perms;
1227	<	}
1228	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1229	<	return perms;
1230	<	}
1231	<	public boolean implies(ProtectionDomain pd, Permission p) {
1232	<	return perms.implies(p);
1233	<	}
1234	<	public void refresh() {}
1225	>	public PermissionCollection getPermissions(CodeSource cs) {
1226	>	return perms;
1227	>	}
1228	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1229	>	return perms;
1230	>	}
1231	>	public boolean implies(ProtectionDomain pd, Permission p) {
1232	>	return perms.implies(p);
1233	>	}
1234	>	public void refresh() {}
1235	>	public String toString() {
1236	>	List<Permission> ps = new ArrayList<Permission>();
1237	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1238	>	ps.add(e.nextElement());
1239	>	return "AdjustablePolicy with permissions " + ps;
1240	>	}
1241		}
1242
1243	+	/**
1244	+	* Returns a policy containing all the permissions we ever need.
1245	+	*/
1246	+	public static Policy permissivePolicy() {
1247	+	return new AdjustablePolicy
1248	+	// Permissions j.u.c. needs directly
1249	+	(new RuntimePermission("modifyThread"),
1250	+	new RuntimePermission("getClassLoader"),
1251	+	new RuntimePermission("setContextClassLoader"),
1252	+	// Permissions needed to change permissions!
1253	+	new SecurityPermission("getPolicy"),
1254	+	new SecurityPermission("setPolicy"),
1255	+	new RuntimePermission("setSecurityManager"),
1256	+	// Permissions needed by the junit test harness
1257	+	new RuntimePermission("accessDeclaredMembers"),
1258	+	new PropertyPermission("*", "read"),
1259	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1260	+	}
1261
1262	<	// Some convenient Runnable classes
1262	>	/**
1263	>	* Sleeps until the given time has elapsed.
1264	>	* Throws AssertionFailedError if interrupted.
1265	>	*/
1266	>	static void sleep(long millis) {
1267	>	try {
1268	>	delay(millis);
1269	>	} catch (InterruptedException fail) {
1270	>	AssertionFailedError afe =
1271	>	new AssertionFailedError("Unexpected InterruptedException");
1272	>	afe.initCause(fail);
1273	>	throw afe;
1274	>	}
1275	>	}
1276
1277	<	static class NoOpRunnable implements Runnable {
1278	<	public void run() {}
1277	>	/**
1278	>	* Spin-waits up to the specified number of milliseconds for the given
1279	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1280	>	*/
1281	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1282	>	long startTime = 0L;
1283	>	for (;;) {
1284	>	Thread.State s = thread.getState();
1285	>	if (s == Thread.State.BLOCKED ||
1286	>	s == Thread.State.WAITING ||
1287	>	s == Thread.State.TIMED_WAITING)
1288	>	return;
1289	>	else if (s == Thread.State.TERMINATED)
1290	>	fail("Unexpected thread termination");
1291	>	else if (startTime == 0L)
1292	>	startTime = System.nanoTime();
1293	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1294	>	threadAssertTrue(thread.isAlive());
1295	>	return;
1296	>	}
1297	>	Thread.yield();
1298	>	}
1299		}
1300
1301	<	static class NoOpCallable implements Callable {
1302	<	public Object call() { return Boolean.TRUE; }
1301	>	/**
1302	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1303	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1304	>	*/
1305	>	void waitForThreadToEnterWaitState(Thread thread) {
1306	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1307		}
1308
1309	<	static final String TEST_STRING = "a test string";
1309	>	/**
1310	>	* Returns the number of milliseconds since time given by
1311	>	* startNanoTime, which must have been previously returned from a
1312	>	* call to {@link System#nanoTime()}.
1313	>	*/
1314	>	static long millisElapsedSince(long startNanoTime) {
1315	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1316	>	}
1317
1318	<	static class StringTask implements Callable<String> {
1319	<	public String call() { return TEST_STRING; }
1318	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1319	>	//         long startTime = System.nanoTime();
1320	>	//         try {
1321	>	//             r.run();
1322	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1323	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1324	>	//             throw new AssertionFailedError("did not return promptly");
1325	>	//     }
1326	>
1327	>	//     void assertTerminatesPromptly(Runnable r) {
1328	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1329	>	//     }
1330	>
1331	>	/**
1332	>	* Checks that timed f.get() returns the expected value, and does not
1333	>	* wait for the timeout to elapse before returning.
1334	>	*/
1335	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1336	>	long startTime = System.nanoTime();
1337	>	try {
1338	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1339	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1340	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1341	>	throw new AssertionFailedError("timed get did not return promptly");
1342		}
1343
1344	<	static class NPETask implements Callable<String> {
1345	<	public String call() { throw new NullPointerException(); }
1344	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1345	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1346		}
1347
1348	<	static class CallableOne implements Callable<Integer> {
1349	<	public Integer call() { return one; }
1348	>	/**
1349	>	* Returns a new started daemon Thread running the given runnable.
1350	>	*/
1351	>	Thread newStartedThread(Runnable runnable) {
1352	>	Thread t = new Thread(runnable);
1353	>	t.setDaemon(true);
1354	>	t.start();
1355	>	return t;
1356		}
1357
1358	<	class ShortRunnable implements Runnable {
1359	<	public void run() {
1360	<	try {
1361	<	Thread.sleep(SHORT_DELAY_MS);
1362	<	}
1363	<	catch(Exception e) {
1364	<	threadUnexpectedException();
1358	>	/**
1359	>	* Waits for the specified time (in milliseconds) for the thread
1360	>	* to 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, long timeoutMillis) {
1364	>	try {
1365	>	t.join(timeoutMillis);
1366	>	} catch (InterruptedException fail) {
1367	>	threadUnexpectedException(fail);
1368	>	} finally {
1369	>	if (t.getState() != Thread.State.TERMINATED) {
1370	>	t.interrupt();
1371	>	threadFail("timed out waiting for thread to terminate");
1372		}
1373		}
1374		}
1375
1376	<	class ShortInterruptedRunnable implements Runnable {
1377	<	public void run() {
1376	>	/**
1377	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1378	>	* terminate (using {@link Thread#join(long)}), else interrupts
1379	>	* the thread (in the hope that it may terminate later) and fails.
1380	>	*/
1381	>	void awaitTermination(Thread t) {
1382	>	awaitTermination(t, LONG_DELAY_MS);
1383	>	}
1384	>
1385	>	// Some convenient Runnable classes
1386	>
1387	>	public abstract class CheckedRunnable implements Runnable {
1388	>	protected abstract void realRun() throws Throwable;
1389	>
1390	>	public final void run() {
1391		try {
1392	<	Thread.sleep(SHORT_DELAY_MS);
1393	<	threadShouldThrow();
1394	<	}
416	<	catch(InterruptedException success) {
1392	>	realRun();
1393	>	} catch (Throwable fail) {
1394	>	threadUnexpectedException(fail);
1395		}
1396		}
1397		}
1398
1399	<	class SmallRunnable implements Runnable {
1400	<	public void run() {
1399	>	public abstract class RunnableShouldThrow implements Runnable {
1400	>	protected abstract void realRun() throws Throwable;
1401	>
1402	>	final Class<?> exceptionClass;
1403	>
1404	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1405	>	this.exceptionClass = exceptionClass;
1406	>	}
1407	>
1408	>	public final void run() {
1409		try {
1410	<	Thread.sleep(SMALL_DELAY_MS);
1411	<	}
1412	<	catch(Exception e) {
1413	<	threadUnexpectedException();
1410	>	realRun();
1411	>	threadShouldThrow(exceptionClass.getSimpleName());
1412	>	} catch (Throwable t) {
1413	>	if (! exceptionClass.isInstance(t))
1414	>	threadUnexpectedException(t);
1415		}
1416		}
1417		}
1418
1419	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1420	<	public void run() {
1419	>	public abstract class ThreadShouldThrow extends Thread {
1420	>	protected abstract void realRun() throws Throwable;
1421	>
1422	>	final Class<?> exceptionClass;
1423	>
1424	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1425	>	this.exceptionClass = exceptionClass;
1426	>	}
1427	>
1428	>	public final void run() {
1429		try {
1430	<	Thread.sleep(SMALL_DELAY_MS);
1431	<	}
1432	<	catch(Exception e) {
1430	>	realRun();
1431	>	threadShouldThrow(exceptionClass.getSimpleName());
1432	>	} catch (Throwable t) {
1433	>	if (! exceptionClass.isInstance(t))
1434	>	threadUnexpectedException(t);
1435		}
1436		}
1437		}
1438
1439	<	class SmallCallable implements Callable {
1440	<	public Object call() {
1439	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1440	>	protected abstract void realRun() throws Throwable;
1441	>
1442	>	public final void run() {
1443		try {
1444	<	Thread.sleep(SMALL_DELAY_MS);
1445	<	}
1446	<	catch(Exception e) {
1447	<	threadUnexpectedException();
1444	>	realRun();
1445	>	threadShouldThrow("InterruptedException");
1446	>	} catch (InterruptedException success) {
1447	>	threadAssertFalse(Thread.interrupted());
1448	>	} catch (Throwable fail) {
1449	>	threadUnexpectedException(fail);
1450		}
450	–	return Boolean.TRUE;
1451		}
1452		}
1453
1454	<	class SmallInterruptedRunnable implements Runnable {
1455	<	public void run() {
1454	>	public abstract class CheckedCallable<T> implements Callable<T> {
1455	>	protected abstract T realCall() throws Throwable;
1456	>
1457	>	public final T call() {
1458		try {
1459	<	Thread.sleep(SMALL_DELAY_MS);
1460	<	threadShouldThrow();
1461	<	}
1462	<	catch(InterruptedException success) {
1459	>	return realCall();
1460	>	} catch (Throwable fail) {
1461	>	threadUnexpectedException(fail);
1462	>	return null;
1463		}
1464		}
1465		}
1466
1467	+	public abstract class CheckedInterruptedCallable<T>
1468	+	implements Callable<T> {
1469	+	protected abstract T realCall() throws Throwable;
1470
1471	<	class MediumRunnable implements Runnable {
467	<	public void run() {
1471	>	public final T call() {
1472		try {
1473	<	Thread.sleep(MEDIUM_DELAY_MS);
1474	<	}
1475	<	catch(Exception e) {
1476	<	threadUnexpectedException();
1473	>	T result = realCall();
1474	>	threadShouldThrow("InterruptedException");
1475	>	return result;
1476	>	} catch (InterruptedException success) {
1477	>	threadAssertFalse(Thread.interrupted());
1478	>	} catch (Throwable fail) {
1479	>	threadUnexpectedException(fail);
1480		}
1481	+	return null;
1482		}
1483		}
1484
1485	<	class MediumInterruptedRunnable implements Runnable {
1486	<	public void run() {
1485	>	public static class NoOpRunnable implements Runnable {
1486	>	public void run() {}
1487	>	}
1488	>
1489	>	public static class NoOpCallable implements Callable {
1490	>	public Object call() { return Boolean.TRUE; }
1491	>	}
1492	>
1493	>	public static final String TEST_STRING = "a test string";
1494	>
1495	>	public static class StringTask implements Callable<String> {
1496	>	final String value;
1497	>	public StringTask() { this(TEST_STRING); }
1498	>	public StringTask(String value) { this.value = value; }
1499	>	public String call() { return value; }
1500	>	}
1501	>
1502	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1503	>	return new CheckedCallable<String>() {
1504	>	protected String realCall() {
1505	>	try {
1506	>	latch.await();
1507	>	} catch (InterruptedException quittingTime) {}
1508	>	return TEST_STRING;
1509	>	}};
1510	>	}
1511	>
1512	>	public Runnable countDowner(final CountDownLatch latch) {
1513	>	return new CheckedRunnable() {
1514	>	public void realRun() throws InterruptedException {
1515	>	latch.countDown();
1516	>	}};
1517	>	}
1518	>
1519	>	class LatchAwaiter extends CheckedRunnable {
1520	>	static final int NEW = 0;
1521	>	static final int RUNNING = 1;
1522	>	static final int DONE = 2;
1523	>	final CountDownLatch latch;
1524	>	int state = NEW;
1525	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1526	>	public void realRun() throws InterruptedException {
1527	>	state = 1;
1528	>	await(latch);
1529	>	state = 2;
1530	>	}
1531	>	}
1532	>
1533	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1534	>	return new LatchAwaiter(latch);
1535	>	}
1536	>
1537	>	public void await(CountDownLatch latch, long timeoutMillis) {
1538	>	try {
1539	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1540	>	fail("timed out waiting for CountDownLatch for "
1541	>	+ (timeoutMillis/1000) + " sec");
1542	>	} catch (Throwable fail) {
1543	>	threadUnexpectedException(fail);
1544	>	}
1545	>	}
1546	>
1547	>	public void await(CountDownLatch latch) {
1548	>	await(latch, LONG_DELAY_MS);
1549	>	}
1550	>
1551	>	public void await(Semaphore semaphore) {
1552	>	try {
1553	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1554	>	fail("timed out waiting for Semaphore for "
1555	>	+ (LONG_DELAY_MS/1000) + " sec");
1556	>	} catch (Throwable fail) {
1557	>	threadUnexpectedException(fail);
1558	>	}
1559	>	}
1560	>
1561	>	//     /**
1562	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1563	>	//      */
1564	>	//     public void await(AtomicBoolean flag) {
1565	>	//         await(flag, LONG_DELAY_MS);
1566	>	//     }
1567	>
1568	>	//     /**
1569	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1570	>	//      */
1571	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1572	>	//         long startTime = System.nanoTime();
1573	>	//         while (!flag.get()) {
1574	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1575	>	//                 throw new AssertionFailedError("timed out");
1576	>	//             Thread.yield();
1577	>	//         }
1578	>	//     }
1579	>
1580	>	public static class NPETask implements Callable<String> {
1581	>	public String call() { throw new NullPointerException(); }
1582	>	}
1583	>
1584	>	public static class CallableOne implements Callable<Integer> {
1585	>	public Integer call() { return one; }
1586	>	}
1587	>
1588	>	public class ShortRunnable extends CheckedRunnable {
1589	>	protected void realRun() throws Throwable {
1590	>	delay(SHORT_DELAY_MS);
1591	>	}
1592	>	}
1593	>
1594	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1595	>	protected void realRun() throws InterruptedException {
1596	>	delay(SHORT_DELAY_MS);
1597	>	}
1598	>	}
1599	>
1600	>	public class SmallRunnable extends CheckedRunnable {
1601	>	protected void realRun() throws Throwable {
1602	>	delay(SMALL_DELAY_MS);
1603	>	}
1604	>	}
1605	>
1606	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1607	>	protected void realRun() {
1608		try {
1609	<	Thread.sleep(MEDIUM_DELAY_MS);
1610	<	threadShouldThrow();
482	<	}
483	<	catch(InterruptedException success) {
484	<	}
1609	>	delay(SMALL_DELAY_MS);
1610	>	} catch (InterruptedException ok) {}
1611		}
1612		}
1613
1614	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1615	<	public void run() {
1614	>	public class SmallCallable extends CheckedCallable {
1615	>	protected Object realCall() throws InterruptedException {
1616	>	delay(SMALL_DELAY_MS);
1617	>	return Boolean.TRUE;
1618	>	}
1619	>	}
1620	>
1621	>	public class MediumRunnable extends CheckedRunnable {
1622	>	protected void realRun() throws Throwable {
1623	>	delay(MEDIUM_DELAY_MS);
1624	>	}
1625	>	}
1626	>
1627	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1628	>	protected void realRun() throws InterruptedException {
1629	>	delay(MEDIUM_DELAY_MS);
1630	>	}
1631	>	}
1632	>
1633	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1634	>	return new CheckedRunnable() {
1635	>	protected void realRun() {
1636	>	try {
1637	>	delay(timeoutMillis);
1638	>	} catch (InterruptedException ok) {}
1639	>	}};
1640	>	}
1641	>
1642	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1643	>	protected void realRun() {
1644		try {
1645	<	Thread.sleep(MEDIUM_DELAY_MS);
1646	<	}
493	<	catch(InterruptedException success) {
494	<	}
1645	>	delay(MEDIUM_DELAY_MS);
1646	>	} catch (InterruptedException ok) {}
1647		}
1648		}
1649
1650	<	class LongPossiblyInterruptedRunnable implements Runnable {
1651	<	public void run() {
1650	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1651	>	protected void realRun() {
1652		try {
1653	<	Thread.sleep(LONG_DELAY_MS);
1654	<	}
503	<	catch(InterruptedException success) {
504	<	}
1653	>	delay(LONG_DELAY_MS);
1654	>	} catch (InterruptedException ok) {}
1655		}
1656		}
1657
1658		/**
1659		* For use as ThreadFactory in constructors
1660		*/
1661	<	static class SimpleThreadFactory implements ThreadFactory{
1662	<	public Thread newThread(Runnable r){
1661	>	public static class SimpleThreadFactory implements ThreadFactory {
1662	>	public Thread newThread(Runnable r) {
1663		return new Thread(r);
1664		}
1665		}
1666
1667	<	static class TrackedShortRunnable implements Runnable {
1668	<	volatile boolean done = false;
1667	>	public interface TrackedRunnable extends Runnable {
1668	>	boolean isDone();
1669	>	}
1670	>
1671	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1672	>	return new TrackedRunnable() {
1673	>	private volatile boolean done = false;
1674	>	public boolean isDone() { return done; }
1675	>	public void run() {
1676	>	try {
1677	>	delay(timeoutMillis);
1678	>	done = true;
1679	>	} catch (InterruptedException ok) {}
1680	>	}
1681	>	};
1682	>	}
1683	>
1684	>	public static class TrackedShortRunnable implements Runnable {
1685	>	public volatile boolean done = false;
1686	>	public void run() {
1687	>	try {
1688	>	delay(SHORT_DELAY_MS);
1689	>	done = true;
1690	>	} catch (InterruptedException ok) {}
1691	>	}
1692	>	}
1693	>
1694	>	public static class TrackedSmallRunnable implements Runnable {
1695	>	public volatile boolean done = false;
1696		public void run() {
1697		try {
1698	<	Thread.sleep(SMALL_DELAY_MS);
1698	>	delay(SMALL_DELAY_MS);
1699		done = true;
1700	<	} catch(Exception e){
524	<	}
1700	>	} catch (InterruptedException ok) {}
1701		}
1702		}
1703
1704	<	static class TrackedMediumRunnable implements Runnable {
1705	<	volatile boolean done = false;
1704	>	public static class TrackedMediumRunnable implements Runnable {
1705	>	public volatile boolean done = false;
1706		public void run() {
1707		try {
1708	<	Thread.sleep(MEDIUM_DELAY_MS);
1708	>	delay(MEDIUM_DELAY_MS);
1709		done = true;
1710	<	} catch(Exception e){
535	<	}
1710	>	} catch (InterruptedException ok) {}
1711		}
1712		}
1713
1714	<	static class TrackedLongRunnable implements Runnable {
1715	<	volatile boolean done = false;
1714	>	public static class TrackedLongRunnable implements Runnable {
1715	>	public volatile boolean done = false;
1716		public void run() {
1717		try {
1718	<	Thread.sleep(LONG_DELAY_MS);
1718	>	delay(LONG_DELAY_MS);
1719		done = true;
1720	<	} catch(Exception e){
546	<	}
1720	>	} catch (InterruptedException ok) {}
1721		}
1722		}
1723
1724	<	static class TrackedNoOpRunnable implements Runnable {
1725	<	volatile boolean done = false;
1724	>	public static class TrackedNoOpRunnable implements Runnable {
1725	>	public volatile boolean done = false;
1726		public void run() {
1727		done = true;
1728		}
1729		}
1730
1731	<	static class TrackedCallable implements Callable {
1732	<	volatile boolean done = false;
1731	>	public static class TrackedCallable implements Callable {
1732	>	public volatile boolean done = false;
1733		public Object call() {
1734		try {
1735	<	Thread.sleep(SMALL_DELAY_MS);
1735	>	delay(SMALL_DELAY_MS);
1736		done = true;
1737	<	} catch(Exception e){
564	<	}
1737	>	} catch (InterruptedException ok) {}
1738		return Boolean.TRUE;
1739		}
1740		}
1741
1742	+	/**
1743	+	* Analog of CheckedRunnable for RecursiveAction
1744	+	*/
1745	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1746	+	protected abstract void realCompute() throws Throwable;
1747	+
1748	+	@Override protected final void compute() {
1749	+	try {
1750	+	realCompute();
1751	+	} catch (Throwable fail) {
1752	+	threadUnexpectedException(fail);
1753	+	}
1754	+	}
1755	+	}
1756	+
1757	+	/**
1758	+	* Analog of CheckedCallable for RecursiveTask
1759	+	*/
1760	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1761	+	protected abstract T realCompute() throws Throwable;
1762	+
1763	+	@Override protected final T compute() {
1764	+	try {
1765	+	return realCompute();
1766	+	} catch (Throwable fail) {
1767	+	threadUnexpectedException(fail);
1768	+	return null;
1769	+	}
1770	+	}
1771	+	}
1772
1773		/**
1774		* For use as RejectedExecutionHandler in constructors
1775		*/
1776	<	static class NoOpREHandler implements RejectedExecutionHandler{
1777	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1776	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1777	>	public void rejectedExecution(Runnable r,
1778	>	ThreadPoolExecutor executor) {}
1779		}
1780
1781	+	/**
1782	+	* A CyclicBarrier that uses timed await and fails with
1783	+	* AssertionFailedErrors instead of throwing checked exceptions.
1784	+	*/
1785	+	public static class CheckedBarrier extends CyclicBarrier {
1786	+	public CheckedBarrier(int parties) { super(parties); }
1787
1788	+	public int await() {
1789	+	try {
1790	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1791	+	} catch (TimeoutException timedOut) {
1792	+	throw new AssertionFailedError("timed out");
1793	+	} catch (Exception fail) {
1794	+	AssertionFailedError afe =
1795	+	new AssertionFailedError("Unexpected exception: " + fail);
1796	+	afe.initCause(fail);
1797	+	throw afe;
1798	+	}
1799	+	}
1800	+	}
1801	+
1802	+	void checkEmpty(BlockingQueue q) {
1803	+	try {
1804	+	assertTrue(q.isEmpty());
1805	+	assertEquals(0, q.size());
1806	+	assertNull(q.peek());
1807	+	assertNull(q.poll());
1808	+	assertNull(q.poll(0, MILLISECONDS));
1809	+	assertEquals(q.toString(), "[]");
1810	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1811	+	assertFalse(q.iterator().hasNext());
1812	+	try {
1813	+	q.element();
1814	+	shouldThrow();
1815	+	} catch (NoSuchElementException success) {}
1816	+	try {
1817	+	q.iterator().next();
1818	+	shouldThrow();
1819	+	} catch (NoSuchElementException success) {}
1820	+	try {
1821	+	q.remove();
1822	+	shouldThrow();
1823	+	} catch (NoSuchElementException success) {}
1824	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1825	+	}
1826	+
1827	+	void assertSerialEquals(Object x, Object y) {
1828	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1829	+	}
1830	+
1831	+	void assertNotSerialEquals(Object x, Object y) {
1832	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1833	+	}
1834	+
1835	+	byte[] serialBytes(Object o) {
1836	+	try {
1837	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1838	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1839	+	oos.writeObject(o);
1840	+	oos.flush();
1841	+	oos.close();
1842	+	return bos.toByteArray();
1843	+	} catch (Throwable fail) {
1844	+	threadUnexpectedException(fail);
1845	+	return new byte[0];
1846	+	}
1847	+	}
1848	+
1849	+	void assertImmutable(final Object o) {
1850	+	if (o instanceof Collection) {
1851	+	assertThrows(
1852	+	UnsupportedOperationException.class,
1853	+	new Runnable() { public void run() {
1854	+	((Collection) o).add(null);}});
1855	+	}
1856	+	}
1857	+
1858	+	@SuppressWarnings("unchecked")
1859	+	<T> T serialClone(T o) {
1860	+	try {
1861	+	ObjectInputStream ois = new ObjectInputStream
1862	+	(new ByteArrayInputStream(serialBytes(o)));
1863	+	T clone = (T) ois.readObject();
1864	+	if (o == clone) assertImmutable(o);
1865	+	assertSame(o.getClass(), clone.getClass());
1866	+	return clone;
1867	+	} catch (Throwable fail) {
1868	+	threadUnexpectedException(fail);
1869	+	return null;
1870	+	}
1871	+	}
1872	+
1873	+	/**
1874	+	* A version of serialClone that leaves error handling (for
1875	+	* e.g. NotSerializableException) up to the caller.
1876	+	*/
1877	+	@SuppressWarnings("unchecked")
1878	+	<T> T serialClonePossiblyFailing(T o)
1879	+	throws ReflectiveOperationException, java.io.IOException {
1880	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1881	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1882	+	oos.writeObject(o);
1883	+	oos.flush();
1884	+	oos.close();
1885	+	ObjectInputStream ois = new ObjectInputStream
1886	+	(new ByteArrayInputStream(bos.toByteArray()));
1887	+	T clone = (T) ois.readObject();
1888	+	if (o == clone) assertImmutable(o);
1889	+	assertSame(o.getClass(), clone.getClass());
1890	+	return clone;
1891	+	}
1892	+
1893	+	/**
1894	+	* If o implements Cloneable and has a public clone method,
1895	+	* returns a clone of o, else null.
1896	+	*/
1897	+	@SuppressWarnings("unchecked")
1898	+	<T> T cloneableClone(T o) {
1899	+	if (!(o instanceof Cloneable)) return null;
1900	+	final T clone;
1901	+	try {
1902	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1903	+	} catch (NoSuchMethodException ok) {
1904	+	return null;
1905	+	} catch (ReflectiveOperationException unexpected) {
1906	+	throw new Error(unexpected);
1907	+	}
1908	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1909	+	assertSame(o.getClass(), clone.getClass());
1910	+	return clone;
1911	+	}
1912	+
1913	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1914	+	Runnable... throwingActions) {
1915	+	for (Runnable throwingAction : throwingActions) {
1916	+	boolean threw = false;
1917	+	try { throwingAction.run(); }
1918	+	catch (Throwable t) {
1919	+	threw = true;
1920	+	if (!expectedExceptionClass.isInstance(t)) {
1921	+	AssertionFailedError afe =
1922	+	new AssertionFailedError
1923	+	("Expected " + expectedExceptionClass.getName() +
1924	+	", got " + t.getClass().getName());
1925	+	afe.initCause(t);
1926	+	threadUnexpectedException(afe);
1927	+	}
1928	+	}
1929	+	if (!threw)
1930	+	shouldThrow(expectedExceptionClass.getName());
1931	+	}
1932	+	}
1933	+
1934	+	public void assertIteratorExhausted(Iterator<?> it) {
1935	+	try {
1936	+	it.next();
1937	+	shouldThrow();
1938	+	} catch (NoSuchElementException success) {}
1939	+	assertFalse(it.hasNext());
1940	+	}
1941	+
1942	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1943	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1944	+	}
1945	+
1946	+	public Runnable runnableThrowing(final RuntimeException ex) {
1947	+	return new Runnable() { public void run() { throw ex; }};
1948	+	}
1949	+
1950	+	/** A reusable thread pool to be shared by tests. */
1951	+	static final ExecutorService cachedThreadPool =
1952	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1953	+	1000L, MILLISECONDS,
1954	+	new SynchronousQueue<Runnable>());
1955	+
1956	+	static <T> void shuffle(T[] array) {
1957	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1958	+	}
1959		}

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