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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.39 by jsr166, Tue Nov 17 21:51:45 2009 UTC vs.
Revision 1.203 by jsr166, Thu Sep 15 03:46:19 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.*;
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 java.io.*;
21	<	import java.security.*;
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.Collections;
45	>	import java.util.Date;
46	>	import java.util.Enumeration;
47	>	import java.util.Iterator;
48	>	import java.util.List;
49	>	import java.util.NoSuchElementException;
50	>	import java.util.PropertyPermission;
51	>	import java.util.concurrent.BlockingQueue;
52	>	import java.util.concurrent.Callable;
53	>	import java.util.concurrent.CountDownLatch;
54	>	import java.util.concurrent.CyclicBarrier;
55	>	import java.util.concurrent.ExecutionException;
56	>	import java.util.concurrent.Executors;
57	>	import java.util.concurrent.ExecutorService;
58	>	import java.util.concurrent.ForkJoinPool;
59	>	import java.util.concurrent.Future;
60	>	import java.util.concurrent.RecursiveAction;
61	>	import java.util.concurrent.RecursiveTask;
62	>	import java.util.concurrent.RejectedExecutionHandler;
63	>	import java.util.concurrent.Semaphore;
64	>	import java.util.concurrent.SynchronousQueue;
65	>	import java.util.concurrent.ThreadFactory;
66	>	import java.util.concurrent.ThreadLocalRandom;
67	>	import java.util.concurrent.ThreadPoolExecutor;
68	>	import java.util.concurrent.TimeoutException;
69	>	import java.util.concurrent.atomic.AtomicBoolean;
70	>	import java.util.concurrent.atomic.AtomicReference;
71	>	import java.util.regex.Matcher;
72	>	import java.util.regex.Pattern;
73	>
74	>	import junit.framework.AssertionFailedError;
75	>	import junit.framework.Test;
76	>	import junit.framework.TestCase;
77	>	import junit.framework.TestResult;
78	>	import junit.framework.TestSuite;
79
80		/**
81		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 23 | Line 87 | import java.security.*;
87		*
88		* <ol>
89		*
90	<	* <li> All assertions in code running in generated threads must use
90	>	* <li>All assertions in code running in generated threads must use
91		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
92		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
93	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
93	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
94		* particularly recommended) for other code to use these forms too.
95		* Only the most typically used JUnit assertion methods are defined
96	<	* this way, but enough to live with.</li>
96	>	* this way, but enough to live with.
97		*
98	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
99	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
98	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
99	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
100		* them. These methods are used to clear and check for thread
101	<	* assertion failures.</li>
101	>	* assertion failures.
102		*
103	<	* <li>All delays and timeouts must use one of the constants <tt>
104	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
105	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
103	>	* <li>All delays and timeouts must use one of the constants {@code
104	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
105	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
106		* discriminable from zero time, and always allows enough time for the
107		* small amounts of computation (creating a thread, calling a few
108		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
109		* is always discriminable as larger than SHORT and smaller than
110		* MEDIUM.  And so on. These constants are set to conservative values,
111		* but even so, if there is ever any doubt, they can all be increased
112	<	* in one spot to rerun tests on slower platforms.</li>
112	>	* in one spot to rerun tests on slower platforms.
113		*
114	<	* <li> All threads generated must be joined inside each test case
115	<	* method (or <tt>fail</tt> to do so) before returning from the
116	<	* method. The <tt> joinPool</tt> method can be used to do this when
117	<	* using Executors.</li>
114	>	* <li>All threads generated must be joined inside each test case
115	>	* method (or {@code fail} to do so) before returning from the
116	>	* method. The {@code joinPool} method can be used to do this when
117	>	* using Executors.
118		*
119		* </ol>
120		*
121	<	* <p> <b>Other notes</b>
121	>	* <p><b>Other notes</b>
122		* <ul>
123		*
124	<	* <li> Usually, there is one testcase method per JSR166 method
124	>	* <li>Usually, there is one testcase method per JSR166 method
125		* covering "normal" operation, and then as many exception-testing
126		* methods as there are exceptions the method can throw. Sometimes
127		* there are multiple tests per JSR166 method when the different
128		* "normal" behaviors differ significantly. And sometimes testcases
129	<	* cover multiple methods when they cannot be tested in
66	<	* isolation.</li>
129	>	* cover multiple methods when they cannot be tested in isolation.
130		*
131	<	* <li> The documentation style for testcases is to provide as javadoc
131	>	* <li>The documentation style for testcases is to provide as javadoc
132		* a simple sentence or two describing the property that the testcase
133		* method purports to test. The javadocs do not say anything about how
134	<	* the property is tested. To find out, read the code.</li>
134	>	* the property is tested. To find out, read the code.
135		*
136	<	* <li> These tests are "conformance tests", and do not attempt to
136	>	* <li>These tests are "conformance tests", and do not attempt to
137		* test throughput, latency, scalability or other performance factors
138		* (see the separate "jtreg" tests for a set intended to check these
139		* for the most central aspects of functionality.) So, most tests use
140		* the smallest sensible numbers of threads, collection sizes, etc
141	<	* needed to check basic conformance.</li>
141	>	* needed to check basic conformance.
142		*
143		* <li>The test classes currently do not declare inclusion in
144		* any particular package to simplify things for people integrating
145	<	* them in TCK test suites.</li>
145	>	* them in TCK test suites.
146		*
147	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
148	<	* runs all JSR166 unit tests.</li>
147	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
148	>	* runs all JSR166 unit tests.
149		*
150		* </ul>
151		*/
152		public class JSR166TestCase extends TestCase {
153	+	private static final boolean useSecurityManager =
154	+	Boolean.getBoolean("jsr166.useSecurityManager");
155	+
156	+	protected static final boolean expensiveTests =
157	+	Boolean.getBoolean("jsr166.expensiveTests");
158	+
159		/**
160	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
160	>	* If true, also run tests that are not part of the official tck
161	>	* because they test unspecified implementation details.
162		*/
163	<	public static void main (String[] args) {
164	<	int iters = 1;
165	<	if (args.length > 0)
166	<	iters = Integer.parseInt(args[0]);
167	<	Test s = suite();
168	<	for (int i = 0; i < iters; ++i) {
169	<	junit.textui.TestRunner.run (s);
170	<	System.gc();
171	<	System.runFinalization();
163	>	protected static final boolean testImplementationDetails =
164	>	Boolean.getBoolean("jsr166.testImplementationDetails");
165	>
166	>	/**
167	>	* If true, report on stdout all "slow" tests, that is, ones that
168	>	* take more than profileThreshold milliseconds to execute.
169	>	*/
170	>	private static final boolean profileTests =
171	>	Boolean.getBoolean("jsr166.profileTests");
172	>
173	>	/**
174	>	* The number of milliseconds that tests are permitted for
175	>	* execution without being reported, when profileTests is set.
176	>	*/
177	>	private static final long profileThreshold =
178	>	Long.getLong("jsr166.profileThreshold", 100);
179	>
180	>	/**
181	>	* The number of repetitions per test (for tickling rare bugs).
182	>	*/
183	>	private static final int runsPerTest =
184	>	Integer.getInteger("jsr166.runsPerTest", 1);
185	>
186	>	/**
187	>	* The number of repetitions of the test suite (for finding leaks?).
188	>	*/
189	>	private static final int suiteRuns =
190	>	Integer.getInteger("jsr166.suiteRuns", 1);
191	>
192	>	/**
193	>	* Returns the value of the system property, or NaN if not defined.
194	>	*/
195	>	private static float systemPropertyValue(String name) {
196	>	String floatString = System.getProperty(name);
197	>	if (floatString == null)
198	>	return Float.NaN;
199	>	try {
200	>	return Float.parseFloat(floatString);
201	>	} catch (NumberFormatException ex) {
202	>	throw new IllegalArgumentException(
203	>	String.format("Bad float value in system property %s=%s",
204	>	name, floatString));
205	>	}
206	>	}
207	>
208	>	/**
209	>	* The scaling factor to apply to standard delays used in tests.
210	>	* May be initialized from any of:
211	>	* - the "jsr166.delay.factor" system property
212	>	* - the "test.timeout.factor" system property (as used by jtreg)
213	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
214	>	* - hard-coded fuzz factor when using a known slowpoke VM
215	>	*/
216	>	private static final float delayFactor = delayFactor();
217	>
218	>	private static float delayFactor() {
219	>	float x;
220	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
221	>	return x;
222	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
223	>	return x;
224	>	String prop = System.getProperty("java.vm.version");
225	>	if (prop != null && prop.matches(".*debug.*"))
226	>	return 4.0f; // How much slower is fastdebug than product?!
227	>	return 1.0f;
228	>	}
229	>
230	>	public JSR166TestCase() { super(); }
231	>	public JSR166TestCase(String name) { super(name); }
232	>
233	>	/**
234	>	* A filter for tests to run, matching strings of the form
235	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
236	>	* Usefully combined with jsr166.runsPerTest.
237	>	*/
238	>	private static final Pattern methodFilter = methodFilter();
239	>
240	>	private static Pattern methodFilter() {
241	>	String regex = System.getProperty("jsr166.methodFilter");
242	>	return (regex == null) ? null : Pattern.compile(regex);
243	>	}
244	>
245	>	// Instrumentation to debug very rare, but very annoying hung test runs.
246	>	static volatile TestCase currentTestCase;
247	>	// static volatile int currentRun = 0;
248	>	static {
249	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
250	>	// Avoid spurious reports with enormous runsPerTest.
251	>	// A single test case run should never take more than 1 second.
252	>	// But let's cap it at the high end too ...
253	>	final int timeoutMinutes =
254	>	Math.min(15, Math.max(runsPerTest / 60, 1));
255	>	for (TestCase lastTestCase = currentTestCase;;) {
256	>	try { MINUTES.sleep(timeoutMinutes); }
257	>	catch (InterruptedException unexpected) { break; }
258	>	if (lastTestCase == currentTestCase) {
259	>	System.err.printf(
260	>	"Looks like we're stuck running test: %s%n",
261	>	lastTestCase);
262	>	//                     System.err.printf(
263	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
264	>	//                         lastTestCase, currentRun, runsPerTest);
265	>	//                     System.err.println("availableProcessors=" +
266	>	//                         Runtime.getRuntime().availableProcessors());
267	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
268	>	dumpTestThreads();
269	>	// one stack dump is probably enough; more would be spam
270	>	break;
271	>	}
272	>	lastTestCase = currentTestCase;
273	>	}}};
274	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
275	>	thread.setDaemon(true);
276	>	thread.start();
277	>	}
278	>
279	>	//     public static String cpuModel() {
280	>	//         try {
281	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
282	>	//                 .matcher(new String(
283	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
284	>	//             matcher.find();
285	>	//             return matcher.group(1);
286	>	//         } catch (Exception ex) { return null; }
287	>	//     }
288	>
289	>	public void runBare() throws Throwable {
290	>	currentTestCase = this;
291	>	if (methodFilter == null
292	>	|| methodFilter.matcher(toString()).find())
293	>	super.runBare();
294	>	}
295	>
296	>	protected void runTest() throws Throwable {
297	>	for (int i = 0; i < runsPerTest; i++) {
298	>	// currentRun = i;
299	>	if (profileTests)
300	>	runTestProfiled();
301	>	else
302	>	super.runTest();
303	>	}
304	>	}
305	>
306	>	protected void runTestProfiled() throws Throwable {
307	>	for (int i = 0; i < 2; i++) {
308	>	long startTime = System.nanoTime();
309	>	super.runTest();
310	>	long elapsedMillis = millisElapsedSince(startTime);
311	>	if (elapsedMillis < profileThreshold)
312	>	break;
313	>	// Never report first run of any test; treat it as a
314	>	// warmup run, notably to trigger all needed classloading,
315	>	if (i > 0)
316	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
317	>	}
318	>	}
319	>
320	>	/**
321	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
322	>	*/
323	>	public static void main(String[] args) {
324	>	main(suite(), args);
325	>	}
326	>
327	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
328	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
329	>	long runTime;
330	>	public void startTest(Test test) {}
331	>	protected void printHeader(long runTime) {
332	>	this.runTime = runTime; // defer printing for later
333	>	}
334	>	protected void printFooter(TestResult result) {
335	>	if (result.wasSuccessful()) {
336	>	getWriter().println("OK (" + result.runCount() + " tests)"
337	>	+ "  Time: " + elapsedTimeAsString(runTime));
338	>	} else {
339	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
340	>	super.printFooter(result);
341	>	}
342		}
103	–	System.exit(0);
343		}
344
345		/**
346	<	* Collects all JSR166 unit tests as one suite
346	>	* Returns a TestRunner that doesn't bother with unnecessary
347	>	* fluff, like printing a "." for each test case.
348	>	*/
349	>	static junit.textui.TestRunner newPithyTestRunner() {
350	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
351	>	runner.setPrinter(new PithyResultPrinter(System.out));
352	>	return runner;
353	>	}
354	>
355	>	/**
356	>	* Runs all unit tests in the given test suite.
357	>	* Actual behavior influenced by jsr166.* system properties.
358		*/
359	<	public static Test suite ( ) {
360	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
359	>	static void main(Test suite, String[] args) {
360	>	if (useSecurityManager) {
361	>	System.err.println("Setting a permissive security manager");
362	>	Policy.setPolicy(permissivePolicy());
363	>	System.setSecurityManager(new SecurityManager());
364	>	}
365	>	for (int i = 0; i < suiteRuns; i++) {
366	>	TestResult result = newPithyTestRunner().doRun(suite);
367	>	if (!result.wasSuccessful())
368	>	System.exit(1);
369	>	System.gc();
370	>	System.runFinalization();
371	>	}
372	>	}
373
374	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
375	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
376	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
377	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
378	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
379	<	suite.addTest(new TestSuite(PhaserTest.class));
380	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
381	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
382	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
383	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
384	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
385	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
386	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
387	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
388	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
389	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
390	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
391	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
392	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
393	<	suite.addTest(new TestSuite(AtomicLongTest.class));
394	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
395	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
396	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
397	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
398	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
399	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
400	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
401	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
402	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
403	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
404	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
405	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
406	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
407	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
408	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
409	<	suite.addTest(new TestSuite(DelayQueueTest.class));
410	<	suite.addTest(new TestSuite(EntryTest.class));
411	<	suite.addTest(new TestSuite(ExchangerTest.class));
412	<	suite.addTest(new TestSuite(ExecutorsTest.class));
413	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
414	<	suite.addTest(new TestSuite(FutureTaskTest.class));
415	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
416	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
417	<	suite.addTest(new TestSuite(LinkedListTest.class));
418	<	suite.addTest(new TestSuite(LockSupportTest.class));
419	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
420	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
421	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
422	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
423	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
424	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
425	<	suite.addTest(new TestSuite(SemaphoreTest.class));
426	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
427	<	suite.addTest(new TestSuite(SystemTest.class));
428	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
429	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
430	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
431	<	suite.addTest(new TestSuite(ThreadTest.class));
432	<	suite.addTest(new TestSuite(TimeUnitTest.class));
433	<	suite.addTest(new TestSuite(TreeMapTest.class));
434	<	suite.addTest(new TestSuite(TreeSetTest.class));
435	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
436	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
374	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
375	>	TestSuite suite = new TestSuite();
376	>	for (Object suiteOrClass : suiteOrClasses) {
377	>	if (suiteOrClass instanceof TestSuite)
378	>	suite.addTest((TestSuite) suiteOrClass);
379	>	else if (suiteOrClass instanceof Class)
380	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
381	>	else
382	>	throw new ClassCastException("not a test suite or class");
383	>	}
384	>	return suite;
385	>	}
386	>
387	>	public static void addNamedTestClasses(TestSuite suite,
388	>	String... testClassNames) {
389	>	for (String testClassName : testClassNames) {
390	>	try {
391	>	Class<?> testClass = Class.forName(testClassName);
392	>	Method m = testClass.getDeclaredMethod("suite",
393	>	new Class<?>[0]);
394	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
395	>	} catch (Exception e) {
396	>	throw new Error("Missing test class", e);
397	>	}
398	>	}
399	>	}
400	>
401	>	public static final double JAVA_CLASS_VERSION;
402	>	public static final String JAVA_SPECIFICATION_VERSION;
403	>	static {
404	>	try {
405	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
406	>	new java.security.PrivilegedAction<Double>() {
407	>	public Double run() {
408	>	return Double.valueOf(System.getProperty("java.class.version"));}});
409	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
410	>	new java.security.PrivilegedAction<String>() {
411	>	public String run() {
412	>	return System.getProperty("java.specification.version");}});
413	>	} catch (Throwable t) {
414	>	throw new Error(t);
415	>	}
416	>	}
417	>
418	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
419	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
420	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
421	>	public static boolean atLeastJava9() {
422	>	return JAVA_CLASS_VERSION >= 53.0
423	>	// As of 2015-09, java9 still uses 52.0 class file version
424	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
425	>	}
426	>	public static boolean atLeastJava10() {
427	>	return JAVA_CLASS_VERSION >= 54.0
428	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
429	>	}
430	>
431	>	/**
432	>	* Collects all JSR166 unit tests as one suite.
433	>	*/
434	>	public static Test suite() {
435	>	// Java7+ test classes
436	>	TestSuite suite = newTestSuite(
437	>	ForkJoinPoolTest.suite(),
438	>	ForkJoinTaskTest.suite(),
439	>	RecursiveActionTest.suite(),
440	>	RecursiveTaskTest.suite(),
441	>	LinkedTransferQueueTest.suite(),
442	>	PhaserTest.suite(),
443	>	ThreadLocalRandomTest.suite(),
444	>	AbstractExecutorServiceTest.suite(),
445	>	AbstractQueueTest.suite(),
446	>	AbstractQueuedSynchronizerTest.suite(),
447	>	AbstractQueuedLongSynchronizerTest.suite(),
448	>	ArrayBlockingQueueTest.suite(),
449	>	ArrayDequeTest.suite(),
450	>	AtomicBooleanTest.suite(),
451	>	AtomicIntegerArrayTest.suite(),
452	>	AtomicIntegerFieldUpdaterTest.suite(),
453	>	AtomicIntegerTest.suite(),
454	>	AtomicLongArrayTest.suite(),
455	>	AtomicLongFieldUpdaterTest.suite(),
456	>	AtomicLongTest.suite(),
457	>	AtomicMarkableReferenceTest.suite(),
458	>	AtomicReferenceArrayTest.suite(),
459	>	AtomicReferenceFieldUpdaterTest.suite(),
460	>	AtomicReferenceTest.suite(),
461	>	AtomicStampedReferenceTest.suite(),
462	>	ConcurrentHashMapTest.suite(),
463	>	ConcurrentLinkedDequeTest.suite(),
464	>	ConcurrentLinkedQueueTest.suite(),
465	>	ConcurrentSkipListMapTest.suite(),
466	>	ConcurrentSkipListSubMapTest.suite(),
467	>	ConcurrentSkipListSetTest.suite(),
468	>	ConcurrentSkipListSubSetTest.suite(),
469	>	CopyOnWriteArrayListTest.suite(),
470	>	CopyOnWriteArraySetTest.suite(),
471	>	CountDownLatchTest.suite(),
472	>	CyclicBarrierTest.suite(),
473	>	DelayQueueTest.suite(),
474	>	EntryTest.suite(),
475	>	ExchangerTest.suite(),
476	>	ExecutorsTest.suite(),
477	>	ExecutorCompletionServiceTest.suite(),
478	>	FutureTaskTest.suite(),
479	>	LinkedBlockingDequeTest.suite(),
480	>	LinkedBlockingQueueTest.suite(),
481	>	LinkedListTest.suite(),
482	>	LockSupportTest.suite(),
483	>	PriorityBlockingQueueTest.suite(),
484	>	PriorityQueueTest.suite(),
485	>	ReentrantLockTest.suite(),
486	>	ReentrantReadWriteLockTest.suite(),
487	>	ScheduledExecutorTest.suite(),
488	>	ScheduledExecutorSubclassTest.suite(),
489	>	SemaphoreTest.suite(),
490	>	SynchronousQueueTest.suite(),
491	>	SystemTest.suite(),
492	>	ThreadLocalTest.suite(),
493	>	ThreadPoolExecutorTest.suite(),
494	>	ThreadPoolExecutorSubclassTest.suite(),
495	>	ThreadTest.suite(),
496	>	TimeUnitTest.suite(),
497	>	TreeMapTest.suite(),
498	>	TreeSetTest.suite(),
499	>	TreeSubMapTest.suite(),
500	>	TreeSubSetTest.suite());
501	>
502	>	// Java8+ test classes
503	>	if (atLeastJava8()) {
504	>	String[] java8TestClassNames = {
505	>	"Atomic8Test",
506	>	"CompletableFutureTest",
507	>	"ConcurrentHashMap8Test",
508	>	"CountedCompleterTest",
509	>	"DoubleAccumulatorTest",
510	>	"DoubleAdderTest",
511	>	"ForkJoinPool8Test",
512	>	"ForkJoinTask8Test",
513	>	"LongAccumulatorTest",
514	>	"LongAdderTest",
515	>	"SplittableRandomTest",
516	>	"StampedLockTest",
517	>	"SubmissionPublisherTest",
518	>	"ThreadLocalRandom8Test",
519	>	"TimeUnit8Test",
520	>	};
521	>	addNamedTestClasses(suite, java8TestClassNames);
522	>	}
523	>
524	>	// Java9+ test classes
525	>	if (atLeastJava9()) {
526	>	String[] java9TestClassNames = {
527	>	"AtomicBoolean9Test",
528	>	"AtomicInteger9Test",
529	>	"AtomicIntegerArray9Test",
530	>	"AtomicLong9Test",
531	>	"AtomicLongArray9Test",
532	>	"AtomicReference9Test",
533	>	"AtomicReferenceArray9Test",
534	>	"ExecutorCompletionService9Test",
535	>	};
536	>	addNamedTestClasses(suite, java9TestClassNames);
537	>	}
538
539		return suite;
540		}
541
542	+	/** Returns list of junit-style test method names in given class. */
543	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
544	+	Method[] methods = testClass.getDeclaredMethods();
545	+	ArrayList<String> names = new ArrayList<String>(methods.length);
546	+	for (Method method : methods) {
547	+	if (method.getName().startsWith("test")
548	+	&& Modifier.isPublic(method.getModifiers())
549	+	// method.getParameterCount() requires jdk8+
550	+	&& method.getParameterTypes().length == 0) {
551	+	names.add(method.getName());
552	+	}
553	+	}
554	+	return names;
555	+	}
556	+
557	+	/**
558	+	* Returns junit-style testSuite for the given test class, but
559	+	* parameterized by passing extra data to each test.
560	+	*/
561	+	public static <ExtraData> Test parameterizedTestSuite
562	+	(Class<? extends JSR166TestCase> testClass,
563	+	Class<ExtraData> dataClass,
564	+	ExtraData data) {
565	+	try {
566	+	TestSuite suite = new TestSuite();
567	+	Constructor c =
568	+	testClass.getDeclaredConstructor(dataClass, String.class);
569	+	for (String methodName : testMethodNames(testClass))
570	+	suite.addTest((Test) c.newInstance(data, methodName));
571	+	return suite;
572	+	} catch (Exception e) {
573	+	throw new Error(e);
574	+	}
575	+	}
576	+
577	+	/**
578	+	* Returns junit-style testSuite for the jdk8 extension of the
579	+	* given test class, but parameterized by passing extra data to
580	+	* each test.  Uses reflection to allow compilation in jdk7.
581	+	*/
582	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
583	+	(Class<? extends JSR166TestCase> testClass,
584	+	Class<ExtraData> dataClass,
585	+	ExtraData data) {
586	+	if (atLeastJava8()) {
587	+	String name = testClass.getName();
588	+	String name8 = name.replaceAll("Test$", "8Test");
589	+	if (name.equals(name8)) throw new Error(name);
590	+	try {
591	+	return (Test)
592	+	Class.forName(name8)
593	+	.getMethod("testSuite", new Class[] { dataClass })
594	+	.invoke(null, data);
595	+	} catch (Exception e) {
596	+	throw new Error(e);
597	+	}
598	+	} else {
599	+	return new TestSuite();
600	+	}
601	+	}
602	+
603	+	// Delays for timing-dependent tests, in milliseconds.
604
605		public static long SHORT_DELAY_MS;
606		public static long SMALL_DELAY_MS;
607		public static long MEDIUM_DELAY_MS;
608		public static long LONG_DELAY_MS;
609
185	–
610		/**
611	<	* Returns the shortest timed delay. This could
612	<	* be reimplemented to use for example a Property.
611	>	* Returns the shortest timed delay. This can be scaled up for
612	>	* slow machines using the jsr166.delay.factor system property,
613	>	* or via jtreg's -timeoutFactor: flag.
614	>	* http://openjdk.java.net/jtreg/command-help.html
615		*/
616		protected long getShortDelay() {
617	<	return 50;
617	>	return (long) (50 * delayFactor);
618		}
619
194	–
620		/**
621		* Sets delays as multiples of SHORT_DELAY.
622		*/
623	<	protected  void setDelays() {
623	>	protected void setDelays() {
624		SHORT_DELAY_MS = getShortDelay();
625	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
625	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
626		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
627	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
627	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
628		}
629
630		/**
631	<	* Flag set true if any threadAssert methods fail
631	>	* Returns a timeout in milliseconds to be used in tests that
632	>	* verify that operations block or time out.
633		*/
634	<	volatile boolean threadFailed;
634	>	long timeoutMillis() {
635	>	return SHORT_DELAY_MS / 4;
636	>	}
637	>
638	>	/**
639	>	* Returns a new Date instance representing a time at least
640	>	* delayMillis milliseconds in the future.
641	>	*/
642	>	Date delayedDate(long delayMillis) {
643	>	// Add 1 because currentTimeMillis is known to round into the past.
644	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
645	>	}
646
647		/**
648	<	* Initializes test to indicate that no thread assertions have failed
648	>	* The first exception encountered if any threadAssertXXX method fails.
649		*/
650	+	private final AtomicReference<Throwable> threadFailure
651	+	= new AtomicReference<Throwable>(null);
652	+
653	+	/**
654	+	* Records an exception so that it can be rethrown later in the test
655	+	* harness thread, triggering a test case failure.  Only the first
656	+	* failure is recorded; subsequent calls to this method from within
657	+	* the same test have no effect.
658	+	*/
659	+	public void threadRecordFailure(Throwable t) {
660	+	System.err.println(t);
661	+	dumpTestThreads();
662	+	threadFailure.compareAndSet(null, t);
663	+	}
664	+
665		public void setUp() {
666		setDelays();
667	<	threadFailed = false;
667	>	}
668	>
669	>	void tearDownFail(String format, Object... args) {
670	>	String msg = toString() + ": " + String.format(format, args);
671	>	System.err.println(msg);
672	>	dumpTestThreads();
673	>	throw new AssertionFailedError(msg);
674	>	}
675	>
676	>	/**
677	>	* Extra checks that get done for all test cases.
678	>	*
679	>	* Triggers test case failure if any thread assertions have failed,
680	>	* by rethrowing, in the test harness thread, any exception recorded
681	>	* earlier by threadRecordFailure.
682	>	*
683	>	* Triggers test case failure if interrupt status is set in the main thread.
684	>	*/
685	>	public void tearDown() throws Exception {
686	>	Throwable t = threadFailure.getAndSet(null);
687	>	if (t != null) {
688	>	if (t instanceof Error)
689	>	throw (Error) t;
690	>	else if (t instanceof RuntimeException)
691	>	throw (RuntimeException) t;
692	>	else if (t instanceof Exception)
693	>	throw (Exception) t;
694	>	else {
695	>	AssertionFailedError afe =
696	>	new AssertionFailedError(t.toString());
697	>	afe.initCause(t);
698	>	throw afe;
699	>	}
700	>	}
701	>
702	>	if (Thread.interrupted())
703	>	tearDownFail("interrupt status set in main thread");
704	>
705	>	checkForkJoinPoolThreadLeaks();
706		}
707
708		/**
709	<	* Triggers test case failure if any thread assertions have failed
709	>	* Finds missing PoolCleaners
710		*/
711	<	public void tearDown() {
712	<	assertFalse(threadFailed);
711	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
712	>	Thread[] survivors = new Thread[7];
713	>	int count = Thread.enumerate(survivors);
714	>	for (int i = 0; i < count; i++) {
715	>	Thread thread = survivors[i];
716	>	String name = thread.getName();
717	>	if (name.startsWith("ForkJoinPool-")) {
718	>	// give thread some time to terminate
719	>	thread.join(LONG_DELAY_MS);
720	>	if (thread.isAlive())
721	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
722	>	thread);
723	>	}
724	>	}
725	>
726	>	if (!ForkJoinPool.commonPool()
727	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
728	>	tearDownFail("ForkJoin common pool thread stuck");
729		}
730
731		/**
732	<	* Fail, also setting status to indicate current testcase should fail
732	>	* Just like fail(reason), but additionally recording (using
733	>	* threadRecordFailure) any AssertionFailedError thrown, so that
734	>	* the current testcase will fail.
735		*/
736		public void threadFail(String reason) {
737	<	threadFailed = true;
738	<	fail(reason);
737	>	try {
738	>	fail(reason);
739	>	} catch (AssertionFailedError t) {
740	>	threadRecordFailure(t);
741	>	throw t;
742	>	}
743		}
744
745		/**
746	<	* If expression not true, set status to indicate current testcase
747	<	* should fail
746	>	* Just like assertTrue(b), but additionally recording (using
747	>	* threadRecordFailure) any AssertionFailedError thrown, so that
748	>	* the current testcase will fail.
749		*/
750		public void threadAssertTrue(boolean b) {
751	<	if (!b) {
239	<	threadFailed = true;
751	>	try {
752		assertTrue(b);
753	+	} catch (AssertionFailedError t) {
754	+	threadRecordFailure(t);
755	+	throw t;
756		}
757		}
758
759		/**
760	<	* If expression not false, set status to indicate current testcase
761	<	* should fail
760	>	* Just like assertFalse(b), but additionally recording (using
761	>	* threadRecordFailure) any AssertionFailedError thrown, so that
762	>	* the current testcase will fail.
763		*/
764		public void threadAssertFalse(boolean b) {
765	<	if (b) {
250	<	threadFailed = true;
765	>	try {
766		assertFalse(b);
767	+	} catch (AssertionFailedError t) {
768	+	threadRecordFailure(t);
769	+	throw t;
770		}
771		}
772
773		/**
774	<	* If argument not null, set status to indicate current testcase
775	<	* should fail
774	>	* Just like assertNull(x), but additionally recording (using
775	>	* threadRecordFailure) any AssertionFailedError thrown, so that
776	>	* the current testcase will fail.
777		*/
778		public void threadAssertNull(Object x) {
779	<	if (x != null) {
261	<	threadFailed = true;
779	>	try {
780		assertNull(x);
781	+	} catch (AssertionFailedError t) {
782	+	threadRecordFailure(t);
783	+	throw t;
784		}
785		}
786
787		/**
788	<	* If arguments not equal, set status to indicate current testcase
789	<	* should fail
788	>	* Just like assertEquals(x, y), but additionally recording (using
789	>	* threadRecordFailure) any AssertionFailedError thrown, so that
790	>	* the current testcase will fail.
791		*/
792		public void threadAssertEquals(long x, long y) {
793	<	if (x != y) {
272	<	threadFailed = true;
793	>	try {
794		assertEquals(x, y);
795	+	} catch (AssertionFailedError t) {
796	+	threadRecordFailure(t);
797	+	throw t;
798		}
799		}
800
801		/**
802	<	* If arguments not equal, set status to indicate current testcase
803	<	* should fail
802	>	* Just like assertEquals(x, y), but additionally recording (using
803	>	* threadRecordFailure) any AssertionFailedError thrown, so that
804	>	* the current testcase will fail.
805		*/
806		public void threadAssertEquals(Object x, Object y) {
807	<	if (x != y && (x == null || !x.equals(y))) {
283	<	threadFailed = true;
807	>	try {
808		assertEquals(x, y);
809	+	} catch (AssertionFailedError fail) {
810	+	threadRecordFailure(fail);
811	+	throw fail;
812	+	} catch (Throwable fail) {
813	+	threadUnexpectedException(fail);
814	+	}
815	+	}
816	+
817	+	/**
818	+	* Just like assertSame(x, y), but additionally recording (using
819	+	* threadRecordFailure) any AssertionFailedError thrown, so that
820	+	* the current testcase will fail.
821	+	*/
822	+	public void threadAssertSame(Object x, Object y) {
823	+	try {
824	+	assertSame(x, y);
825	+	} catch (AssertionFailedError fail) {
826	+	threadRecordFailure(fail);
827	+	throw fail;
828		}
829		}
830
831		/**
832	<	* threadFail with message "should throw exception"
832	>	* Calls threadFail with message "should throw exception".
833		*/
834		public void threadShouldThrow() {
835	<	threadFailed = true;
293	<	fail("should throw exception");
835	>	threadFail("should throw exception");
836		}
837
838		/**
839	<	* threadFail with message "Unexpected exception"
839	>	* Calls threadFail with message "should throw" + exceptionName.
840		*/
841	<	public void threadUnexpectedException() {
842	<	threadFailed = true;
301	<	fail("Unexpected exception");
841	>	public void threadShouldThrow(String exceptionName) {
842	>	threadFail("should throw " + exceptionName);
843		}
844
845		/**
846	<	* threadFail with message "Unexpected exception", with argument
846	>	* Records the given exception using {@link #threadRecordFailure},
847	>	* then rethrows the exception, wrapping it in an
848	>	* AssertionFailedError if necessary.
849		*/
850	<	public void threadUnexpectedException(Throwable ex) {
851	<	threadFailed = true;
852	<	ex.printStackTrace();
853	<	fail("Unexpected exception: " + ex);
850	>	public void threadUnexpectedException(Throwable t) {
851	>	threadRecordFailure(t);
852	>	t.printStackTrace();
853	>	if (t instanceof RuntimeException)
854	>	throw (RuntimeException) t;
855	>	else if (t instanceof Error)
856	>	throw (Error) t;
857	>	else {
858	>	AssertionFailedError afe =
859	>	new AssertionFailedError("unexpected exception: " + t);
860	>	afe.initCause(t);
861	>	throw afe;
862	>	}
863		}
864
865		/**
866	<	* Wait out termination of a thread pool or fail doing so
866	>	* Delays, via Thread.sleep, for the given millisecond delay, but
867	>	* if the sleep is shorter than specified, may re-sleep or yield
868	>	* until time elapses.  Ensures that the given time, as measured
869	>	* by System.nanoTime(), has elapsed.
870		*/
871	<	public void joinPool(ExecutorService exec) {
871	>	static void delay(long millis) throws InterruptedException {
872	>	long nanos = millis * (1000 * 1000);
873	>	final long wakeupTime = System.nanoTime() + nanos;
874	>	do {
875	>	if (millis > 0L)
876	>	Thread.sleep(millis);
877	>	else // too short to sleep
878	>	Thread.yield();
879	>	nanos = wakeupTime - System.nanoTime();
880	>	millis = nanos / (1000 * 1000);
881	>	} while (nanos >= 0L);
882	>	}
883	>
884	>	/**
885	>	* Allows use of try-with-resources with per-test thread pools.
886	>	*/
887	>	class PoolCleaner implements AutoCloseable {
888	>	private final ExecutorService pool;
889	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
890	>	public void close() { joinPool(pool); }
891	>	}
892	>
893	>	/**
894	>	* An extension of PoolCleaner that has an action to release the pool.
895	>	*/
896	>	class PoolCleanerWithReleaser extends PoolCleaner {
897	>	private final Runnable releaser;
898	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
899	>	super(pool);
900	>	this.releaser = releaser;
901	>	}
902	>	public void close() {
903	>	try {
904	>	releaser.run();
905	>	} finally {
906	>	super.close();
907	>	}
908	>	}
909	>	}
910	>
911	>	PoolCleaner cleaner(ExecutorService pool) {
912	>	return new PoolCleaner(pool);
913	>	}
914	>
915	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
916	>	return new PoolCleanerWithReleaser(pool, releaser);
917	>	}
918	>
919	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
920	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
921	>	}
922	>
923	>	Runnable releaser(final CountDownLatch latch) {
924	>	return new Runnable() { public void run() {
925	>	do { latch.countDown(); }
926	>	while (latch.getCount() > 0);
927	>	}};
928	>	}
929	>
930	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
931	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
932	>	}
933	>
934	>	Runnable releaser(final AtomicBoolean flag) {
935	>	return new Runnable() { public void run() { flag.set(true); }};
936	>	}
937	>
938	>	/**
939	>	* Waits out termination of a thread pool or fails doing so.
940	>	*/
941	>	void joinPool(ExecutorService pool) {
942		try {
943	<	exec.shutdown();
944	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
943	>	pool.shutdown();
944	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
945	>	try {
946	>	threadFail("ExecutorService " + pool +
947	>	" did not terminate in a timely manner");
948	>	} finally {
949	>	// last resort, for the benefit of subsequent tests
950	>	pool.shutdownNow();
951	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
952	>	}
953	>	}
954		} catch (SecurityException ok) {
955		// Allowed in case test doesn't have privs
956	<	} catch (InterruptedException ie) {
957	<	fail("Unexpected exception");
956	>	} catch (InterruptedException fail) {
957	>	threadFail("Unexpected InterruptedException");
958		}
959		}
960
961	+	/**
962	+	* Like Runnable, but with the freedom to throw anything.
963	+	* junit folks had the same idea:
964	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
965	+	*/
966	+	interface Action { public void run() throws Throwable; }
967
968		/**
969	<	* fail with message "should throw exception"
969	>	* Runs all the given actions in parallel, failing if any fail.
970	>	* Useful for running multiple variants of tests that are
971	>	* necessarily individually slow because they must block.
972		*/
973	<	public void shouldThrow() {
974	<	fail("Should throw exception");
973	>	void testInParallel(Action ... actions) {
974	>	ExecutorService pool = Executors.newCachedThreadPool();
975	>	try (PoolCleaner cleaner = cleaner(pool)) {
976	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
977	>	for (final Action action : actions)
978	>	futures.add(pool.submit(new CheckedRunnable() {
979	>	public void realRun() throws Throwable { action.run();}}));
980	>	for (Future<?> future : futures)
981	>	try {
982	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
983	>	} catch (ExecutionException ex) {
984	>	threadUnexpectedException(ex.getCause());
985	>	} catch (Exception ex) {
986	>	threadUnexpectedException(ex);
987	>	}
988	>	}
989		}
990
991		/**
992	<	* fail with message "Unexpected exception"
992	>	* A debugging tool to print stack traces of most threads, as jstack does.
993	>	* Uninteresting threads are filtered out.
994		*/
995	<	public void unexpectedException() {
996	<	fail("Unexpected exception");
995	>	static void dumpTestThreads() {
996	>	SecurityManager sm = System.getSecurityManager();
997	>	if (sm != null) {
998	>	try {
999	>	System.setSecurityManager(null);
1000	>	} catch (SecurityException giveUp) {
1001	>	return;
1002	>	}
1003	>	}
1004	>
1005	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1006	>	System.err.println("------ stacktrace dump start ------");
1007	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1008	>	final String name = info.getThreadName();
1009	>	String lockName;
1010	>	if ("Signal Dispatcher".equals(name))
1011	>	continue;
1012	>	if ("Reference Handler".equals(name)
1013	>	&& (lockName = info.getLockName()) != null
1014	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1015	>	continue;
1016	>	if ("Finalizer".equals(name)
1017	>	&& (lockName = info.getLockName()) != null
1018	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1019	>	continue;
1020	>	if ("checkForWedgedTest".equals(name))
1021	>	continue;
1022	>	System.err.print(info);
1023	>	}
1024	>	System.err.println("------ stacktrace dump end ------");
1025	>
1026	>	if (sm != null) System.setSecurityManager(sm);
1027	>	}
1028	>
1029	>	/**
1030	>	* Checks that thread does not terminate within the default
1031	>	* millisecond delay of {@code timeoutMillis()}.
1032	>	*/
1033	>	void assertThreadStaysAlive(Thread thread) {
1034	>	assertThreadStaysAlive(thread, timeoutMillis());
1035	>	}
1036	>
1037	>	/**
1038	>	* Checks that thread does not terminate within the given millisecond delay.
1039	>	*/
1040	>	void assertThreadStaysAlive(Thread thread, long millis) {
1041	>	try {
1042	>	// No need to optimize the failing case via Thread.join.
1043	>	delay(millis);
1044	>	assertTrue(thread.isAlive());
1045	>	} catch (InterruptedException fail) {
1046	>	threadFail("Unexpected InterruptedException");
1047	>	}
1048	>	}
1049	>
1050	>	/**
1051	>	* Checks that the threads do not terminate within the default
1052	>	* millisecond delay of {@code timeoutMillis()}.
1053	>	*/
1054	>	void assertThreadsStayAlive(Thread... threads) {
1055	>	assertThreadsStayAlive(timeoutMillis(), threads);
1056	>	}
1057	>
1058	>	/**
1059	>	* Checks that the threads do not terminate within the given millisecond delay.
1060	>	*/
1061	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1062	>	try {
1063	>	// No need to optimize the failing case via Thread.join.
1064	>	delay(millis);
1065	>	for (Thread thread : threads)
1066	>	assertTrue(thread.isAlive());
1067	>	} catch (InterruptedException fail) {
1068	>	threadFail("Unexpected InterruptedException");
1069	>	}
1070	>	}
1071	>
1072	>	/**
1073	>	* Checks that future.get times out, with the default timeout of
1074	>	* {@code timeoutMillis()}.
1075	>	*/
1076	>	void assertFutureTimesOut(Future future) {
1077	>	assertFutureTimesOut(future, timeoutMillis());
1078	>	}
1079	>
1080	>	/**
1081	>	* Checks that future.get times out, with the given millisecond timeout.
1082	>	*/
1083	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1084	>	long startTime = System.nanoTime();
1085	>	try {
1086	>	future.get(timeoutMillis, MILLISECONDS);
1087	>	shouldThrow();
1088	>	} catch (TimeoutException success) {
1089	>	} catch (Exception fail) {
1090	>	threadUnexpectedException(fail);
1091	>	} finally { future.cancel(true); }
1092	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1093		}
1094
1095		/**
1096	<	* fail with message "Unexpected exception", with argument
1096	>	* Fails with message "should throw exception".
1097		*/
1098	<	public void unexpectedException(Throwable ex) {
1099	<	ex.printStackTrace();
347	<	fail("Unexpected exception: " + ex);
1098	>	public void shouldThrow() {
1099	>	fail("Should throw exception");
1100		}
1101
1102	+	/**
1103	+	* Fails with message "should throw " + exceptionName.
1104	+	*/
1105	+	public void shouldThrow(String exceptionName) {
1106	+	fail("Should throw " + exceptionName);
1107	+	}
1108
1109		/**
1110		* The number of elements to place in collections, arrays, etc.
1111		*/
1112	<	static final int SIZE = 20;
1112	>	public static final int SIZE = 20;
1113
1114		// Some convenient Integer constants
1115
1116	<	static final Integer zero = new Integer(0);
1117	<	static final Integer one = new Integer(1);
1118	<	static final Integer two = new Integer(2);
1119	<	static final Integer three  = new Integer(3);
1120	<	static final Integer four  = new Integer(4);
1121	<	static final Integer five  = new Integer(5);
1122	<	static final Integer six = new Integer(6);
1123	<	static final Integer seven = new Integer(7);
1124	<	static final Integer eight = new Integer(8);
1125	<	static final Integer nine = new Integer(9);
1126	<	static final Integer m1  = new Integer(-1);
1127	<	static final Integer m2  = new Integer(-2);
1128	<	static final Integer m3  = new Integer(-3);
1129	<	static final Integer m4 = new Integer(-4);
1130	<	static final Integer m5 = new Integer(-5);
1131	<	static final Integer m6 = new Integer(-6);
1132	<	static final Integer m10 = new Integer(-10);
1116	>	public static final Integer zero  = new Integer(0);
1117	>	public static final Integer one   = new Integer(1);
1118	>	public static final Integer two   = new Integer(2);
1119	>	public static final Integer three = new Integer(3);
1120	>	public static final Integer four  = new Integer(4);
1121	>	public static final Integer five  = new Integer(5);
1122	>	public static final Integer six   = new Integer(6);
1123	>	public static final Integer seven = new Integer(7);
1124	>	public static final Integer eight = new Integer(8);
1125	>	public static final Integer nine  = new Integer(9);
1126	>	public static final Integer m1  = new Integer(-1);
1127	>	public static final Integer m2  = new Integer(-2);
1128	>	public static final Integer m3  = new Integer(-3);
1129	>	public static final Integer m4  = new Integer(-4);
1130	>	public static final Integer m5  = new Integer(-5);
1131	>	public static final Integer m6  = new Integer(-6);
1132	>	public static final Integer m10 = new Integer(-10);
1133	>
1134	>	/**
1135	>	* Runs Runnable r with a security policy that permits precisely
1136	>	* the specified permissions.  If there is no current security
1137	>	* manager, the runnable is run twice, both with and without a
1138	>	* security manager.  We require that any security manager permit
1139	>	* getPolicy/setPolicy.
1140	>	*/
1141	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1142	>	SecurityManager sm = System.getSecurityManager();
1143	>	if (sm == null) {
1144	>	r.run();
1145	>	}
1146	>	runWithSecurityManagerWithPermissions(r, permissions);
1147	>	}
1148
1149	+	/**
1150	+	* Runs Runnable r with a security policy that permits precisely
1151	+	* the specified permissions.  If there is no current security
1152	+	* manager, a temporary one is set for the duration of the
1153	+	* Runnable.  We require that any security manager permit
1154	+	* getPolicy/setPolicy.
1155	+	*/
1156	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1157	+	Permission... permissions) {
1158	+	SecurityManager sm = System.getSecurityManager();
1159	+	if (sm == null) {
1160	+	Policy savedPolicy = Policy.getPolicy();
1161	+	try {
1162	+	Policy.setPolicy(permissivePolicy());
1163	+	System.setSecurityManager(new SecurityManager());
1164	+	runWithSecurityManagerWithPermissions(r, permissions);
1165	+	} finally {
1166	+	System.setSecurityManager(null);
1167	+	Policy.setPolicy(savedPolicy);
1168	+	}
1169	+	} else {
1170	+	Policy savedPolicy = Policy.getPolicy();
1171	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1172	+	Policy.setPolicy(policy);
1173	+
1174	+	try {
1175	+	r.run();
1176	+	} finally {
1177	+	policy.addPermission(new SecurityPermission("setPolicy"));
1178	+	Policy.setPolicy(savedPolicy);
1179	+	}
1180	+	}
1181	+	}
1182	+
1183	+	/**
1184	+	* Runs a runnable without any permissions.
1185	+	*/
1186	+	public void runWithoutPermissions(Runnable r) {
1187	+	runWithPermissions(r);
1188	+	}
1189
1190		/**
1191		* A security policy where new permissions can be dynamically added
1192		* or all cleared.
1193		*/
1194	<	static class AdjustablePolicy extends java.security.Policy {
1194	>	public static class AdjustablePolicy extends java.security.Policy {
1195		Permissions perms = new Permissions();
1196	<	AdjustablePolicy() { }
1196	>	AdjustablePolicy(Permission... permissions) {
1197	>	for (Permission permission : permissions)
1198	>	perms.add(permission);
1199	>	}
1200		void addPermission(Permission perm) { perms.add(perm); }
1201		void clearPermissions() { perms = new Permissions(); }
1202	<	public PermissionCollection getPermissions(CodeSource cs) {
1203	<	return perms;
1204	<	}
1205	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1206	<	return perms;
1207	<	}
1208	<	public boolean implies(ProtectionDomain pd, Permission p) {
1209	<	return perms.implies(p);
1210	<	}
1211	<	public void refresh() {}
1202	>	public PermissionCollection getPermissions(CodeSource cs) {
1203	>	return perms;
1204	>	}
1205	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1206	>	return perms;
1207	>	}
1208	>	public boolean implies(ProtectionDomain pd, Permission p) {
1209	>	return perms.implies(p);
1210	>	}
1211	>	public void refresh() {}
1212	>	public String toString() {
1213	>	List<Permission> ps = new ArrayList<Permission>();
1214	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1215	>	ps.add(e.nextElement());
1216	>	return "AdjustablePolicy with permissions " + ps;
1217	>	}
1218		}
1219
1220		/**
1221	<	* Sleep until the timeout has elapsed, or interrupted.
400	<	* Does <em>NOT</em> throw InterruptedException.
1221	>	* Returns a policy containing all the permissions we ever need.
1222		*/
1223	<	void sleepTillInterrupted(long timeoutMillis) {
1223	>	public static Policy permissivePolicy() {
1224	>	return new AdjustablePolicy
1225	>	// Permissions j.u.c. needs directly
1226	>	(new RuntimePermission("modifyThread"),
1227	>	new RuntimePermission("getClassLoader"),
1228	>	new RuntimePermission("setContextClassLoader"),
1229	>	// Permissions needed to change permissions!
1230	>	new SecurityPermission("getPolicy"),
1231	>	new SecurityPermission("setPolicy"),
1232	>	new RuntimePermission("setSecurityManager"),
1233	>	// Permissions needed by the junit test harness
1234	>	new RuntimePermission("accessDeclaredMembers"),
1235	>	new PropertyPermission("*", "read"),
1236	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1237	>	}
1238	>
1239	>	/**
1240	>	* Sleeps until the given time has elapsed.
1241	>	* Throws AssertionFailedError if interrupted.
1242	>	*/
1243	>	static void sleep(long millis) {
1244		try {
1245	<	Thread.sleep(timeoutMillis);
1246	<	} catch (InterruptedException wakeup) {
1245	>	delay(millis);
1246	>	} catch (InterruptedException fail) {
1247	>	AssertionFailedError afe =
1248	>	new AssertionFailedError("Unexpected InterruptedException");
1249	>	afe.initCause(fail);
1250	>	throw afe;
1251		}
1252		}
1253
1254		/**
1255	<	* Returns a new started Thread running the given runnable.
1255	>	* Spin-waits up to the specified number of milliseconds for the given
1256	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1257	>	*/
1258	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1259	>	long startTime = 0L;
1260	>	for (;;) {
1261	>	Thread.State s = thread.getState();
1262	>	if (s == Thread.State.BLOCKED ||
1263	>	s == Thread.State.WAITING ||
1264	>	s == Thread.State.TIMED_WAITING)
1265	>	return;
1266	>	else if (s == Thread.State.TERMINATED)
1267	>	fail("Unexpected thread termination");
1268	>	else if (startTime == 0L)
1269	>	startTime = System.nanoTime();
1270	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1271	>	threadAssertTrue(thread.isAlive());
1272	>	return;
1273	>	}
1274	>	Thread.yield();
1275	>	}
1276	>	}
1277	>
1278	>	/**
1279	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1280	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1281	>	*/
1282	>	void waitForThreadToEnterWaitState(Thread thread) {
1283	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1284	>	}
1285	>
1286	>	/**
1287	>	* Returns the number of milliseconds since time given by
1288	>	* startNanoTime, which must have been previously returned from a
1289	>	* call to {@link System#nanoTime()}.
1290	>	*/
1291	>	static long millisElapsedSince(long startNanoTime) {
1292	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1293	>	}
1294	>
1295	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1296	>	//         long startTime = System.nanoTime();
1297	>	//         try {
1298	>	//             r.run();
1299	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1300	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1301	>	//             throw new AssertionFailedError("did not return promptly");
1302	>	//     }
1303	>
1304	>	//     void assertTerminatesPromptly(Runnable r) {
1305	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1306	>	//     }
1307	>
1308	>	/**
1309	>	* Checks that timed f.get() returns the expected value, and does not
1310	>	* wait for the timeout to elapse before returning.
1311	>	*/
1312	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1313	>	long startTime = System.nanoTime();
1314	>	try {
1315	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1316	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1317	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1318	>	throw new AssertionFailedError("timed get did not return promptly");
1319	>	}
1320	>
1321	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1322	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1323	>	}
1324	>
1325	>	/**
1326	>	* Returns a new started daemon Thread running the given runnable.
1327		*/
1328		Thread newStartedThread(Runnable runnable) {
1329		Thread t = new Thread(runnable);
1330	+	t.setDaemon(true);
1331		t.start();
1332		return t;
1333		}
1334
1335	+	/**
1336	+	* Waits for the specified time (in milliseconds) for the thread
1337	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1338	+	* the thread (in the hope that it may terminate later) and fails.
1339	+	*/
1340	+	void awaitTermination(Thread t, long timeoutMillis) {
1341	+	try {
1342	+	t.join(timeoutMillis);
1343	+	} catch (InterruptedException fail) {
1344	+	threadUnexpectedException(fail);
1345	+	} finally {
1346	+	if (t.getState() != Thread.State.TERMINATED) {
1347	+	t.interrupt();
1348	+	threadFail("timed out waiting for thread to terminate");
1349	+	}
1350	+	}
1351	+	}
1352	+
1353	+	/**
1354	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1355	+	* terminate (using {@link Thread#join(long)}), else interrupts
1356	+	* the thread (in the hope that it may terminate later) and fails.
1357	+	*/
1358	+	void awaitTermination(Thread t) {
1359	+	awaitTermination(t, LONG_DELAY_MS);
1360	+	}
1361	+
1362		// Some convenient Runnable classes
1363
1364	<	abstract class CheckedRunnable implements Runnable {
1365	<	abstract void realRun() throws Throwable;
1364	>	public abstract class CheckedRunnable implements Runnable {
1365	>	protected abstract void realRun() throws Throwable;
1366	>
1367	>	public final void run() {
1368	>	try {
1369	>	realRun();
1370	>	} catch (Throwable fail) {
1371	>	threadUnexpectedException(fail);
1372	>	}
1373	>	}
1374	>	}
1375	>
1376	>	public abstract class RunnableShouldThrow implements Runnable {
1377	>	protected abstract void realRun() throws Throwable;
1378	>
1379	>	final Class<?> exceptionClass;
1380	>
1381	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1382	>	this.exceptionClass = exceptionClass;
1383	>	}
1384
1385		public final void run() {
1386		try {
1387		realRun();
1388	+	threadShouldThrow(exceptionClass.getSimpleName());
1389		} catch (Throwable t) {
1390	<	threadUnexpectedException(t);
1390	>	if (! exceptionClass.isInstance(t))
1391	>	threadUnexpectedException(t);
1392		}
1393		}
1394		}
1395
1396	<	abstract class CheckedInterruptedRunnable implements Runnable {
1397	<	abstract void realRun() throws Throwable;
1396	>	public abstract class ThreadShouldThrow extends Thread {
1397	>	protected abstract void realRun() throws Throwable;
1398	>
1399	>	final Class<?> exceptionClass;
1400	>
1401	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1402	>	this.exceptionClass = exceptionClass;
1403	>	}
1404
1405		public final void run() {
1406		try {
1407		realRun();
1408	<	threadShouldThrow();
439	<	} catch (InterruptedException success) {
1408	>	threadShouldThrow(exceptionClass.getSimpleName());
1409		} catch (Throwable t) {
1410	<	threadUnexpectedException(t);
1410	>	if (! exceptionClass.isInstance(t))
1411	>	threadUnexpectedException(t);
1412	>	}
1413	>	}
1414	>	}
1415	>
1416	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1417	>	protected abstract void realRun() throws Throwable;
1418	>
1419	>	public final void run() {
1420	>	try {
1421	>	realRun();
1422	>	threadShouldThrow("InterruptedException");
1423	>	} catch (InterruptedException success) {
1424	>	threadAssertFalse(Thread.interrupted());
1425	>	} catch (Throwable fail) {
1426	>	threadUnexpectedException(fail);
1427		}
1428		}
1429		}
1430
1431	<	abstract class CheckedCallable<T> implements Callable<T> {
1432	<	abstract T realCall() throws Throwable;
1431	>	public abstract class CheckedCallable<T> implements Callable<T> {
1432	>	protected abstract T realCall() throws Throwable;
1433
1434		public final T call() {
1435		try {
1436		return realCall();
1437	<	} catch (Throwable t) {
1438	<	threadUnexpectedException(t);
1437	>	} catch (Throwable fail) {
1438	>	threadUnexpectedException(fail);
1439		return null;
1440		}
1441		}
1442		}
1443
1444	<	static class NoOpRunnable implements Runnable {
1444	>	public abstract class CheckedInterruptedCallable<T>
1445	>	implements Callable<T> {
1446	>	protected abstract T realCall() throws Throwable;
1447	>
1448	>	public final T call() {
1449	>	try {
1450	>	T result = realCall();
1451	>	threadShouldThrow("InterruptedException");
1452	>	return result;
1453	>	} catch (InterruptedException success) {
1454	>	threadAssertFalse(Thread.interrupted());
1455	>	} catch (Throwable fail) {
1456	>	threadUnexpectedException(fail);
1457	>	}
1458	>	return null;
1459	>	}
1460	>	}
1461	>
1462	>	public static class NoOpRunnable implements Runnable {
1463		public void run() {}
1464		}
1465
1466	<	static class NoOpCallable implements Callable {
1466	>	public static class NoOpCallable implements Callable {
1467		public Object call() { return Boolean.TRUE; }
1468		}
1469
1470	<	static final String TEST_STRING = "a test string";
1470	>	public static final String TEST_STRING = "a test string";
1471	>
1472	>	public static class StringTask implements Callable<String> {
1473	>	final String value;
1474	>	public StringTask() { this(TEST_STRING); }
1475	>	public StringTask(String value) { this.value = value; }
1476	>	public String call() { return value; }
1477	>	}
1478	>
1479	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1480	>	return new CheckedCallable<String>() {
1481	>	protected String realCall() {
1482	>	try {
1483	>	latch.await();
1484	>	} catch (InterruptedException quittingTime) {}
1485	>	return TEST_STRING;
1486	>	}};
1487	>	}
1488	>
1489	>	public Runnable countDowner(final CountDownLatch latch) {
1490	>	return new CheckedRunnable() {
1491	>	public void realRun() throws InterruptedException {
1492	>	latch.countDown();
1493	>	}};
1494	>	}
1495	>
1496	>	class LatchAwaiter extends CheckedRunnable {
1497	>	static final int NEW = 0;
1498	>	static final int RUNNING = 1;
1499	>	static final int DONE = 2;
1500	>	final CountDownLatch latch;
1501	>	int state = NEW;
1502	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1503	>	public void realRun() throws InterruptedException {
1504	>	state = 1;
1505	>	await(latch);
1506	>	state = 2;
1507	>	}
1508	>	}
1509	>
1510	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1511	>	return new LatchAwaiter(latch);
1512	>	}
1513	>
1514	>	public void await(CountDownLatch latch, long timeoutMillis) {
1515	>	try {
1516	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1517	>	fail("timed out waiting for CountDownLatch for "
1518	>	+ (timeoutMillis/1000) + " sec");
1519	>	} catch (Throwable fail) {
1520	>	threadUnexpectedException(fail);
1521	>	}
1522	>	}
1523	>
1524	>	public void await(CountDownLatch latch) {
1525	>	await(latch, LONG_DELAY_MS);
1526	>	}
1527
1528	<	static class StringTask implements Callable<String> {
1529	<	public String call() { return TEST_STRING; }
1528	>	public void await(Semaphore semaphore) {
1529	>	try {
1530	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1531	>	fail("timed out waiting for Semaphore for "
1532	>	+ (LONG_DELAY_MS/1000) + " sec");
1533	>	} catch (Throwable fail) {
1534	>	threadUnexpectedException(fail);
1535	>	}
1536		}
1537
1538	<	static class NPETask implements Callable<String> {
1538	>	//     /**
1539	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1540	>	//      */
1541	>	//     public void await(AtomicBoolean flag) {
1542	>	//         await(flag, LONG_DELAY_MS);
1543	>	//     }
1544	>
1545	>	//     /**
1546	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1547	>	//      */
1548	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1549	>	//         long startTime = System.nanoTime();
1550	>	//         while (!flag.get()) {
1551	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1552	>	//                 throw new AssertionFailedError("timed out");
1553	>	//             Thread.yield();
1554	>	//         }
1555	>	//     }
1556	>
1557	>	public static class NPETask implements Callable<String> {
1558		public String call() { throw new NullPointerException(); }
1559		}
1560
1561	<	static class CallableOne implements Callable<Integer> {
1561	>	public static class CallableOne implements Callable<Integer> {
1562		public Integer call() { return one; }
1563		}
1564
1565	<	class ShortRunnable extends CheckedRunnable {
1566	<	void realRun() throws Throwable {
1567	<	Thread.sleep(SHORT_DELAY_MS);
1565	>	public class ShortRunnable extends CheckedRunnable {
1566	>	protected void realRun() throws Throwable {
1567	>	delay(SHORT_DELAY_MS);
1568		}
1569		}
1570
1571	<	class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1572	<	void realRun() throws InterruptedException {
1573	<	Thread.sleep(SHORT_DELAY_MS);
1571	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1572	>	protected void realRun() throws InterruptedException {
1573	>	delay(SHORT_DELAY_MS);
1574		}
1575		}
1576
1577	<	class SmallRunnable extends CheckedRunnable {
1578	<	void realRun() throws Throwable {
1579	<	Thread.sleep(SMALL_DELAY_MS);
1577	>	public class SmallRunnable extends CheckedRunnable {
1578	>	protected void realRun() throws Throwable {
1579	>	delay(SMALL_DELAY_MS);
1580		}
1581		}
1582
1583	<	class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1584	<	void realRun() {
1583	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1584	>	protected void realRun() {
1585		try {
1586	<	Thread.sleep(SMALL_DELAY_MS);
1587	<	}
504	<	catch (InterruptedException ok) {
505	<	}
1586	>	delay(SMALL_DELAY_MS);
1587	>	} catch (InterruptedException ok) {}
1588		}
1589		}
1590
1591	<	class SmallCallable extends CheckedCallable {
1592	<	Object realCall() throws Throwable {
1593	<	Thread.sleep(SMALL_DELAY_MS);
1591	>	public class SmallCallable extends CheckedCallable {
1592	>	protected Object realCall() throws InterruptedException {
1593	>	delay(SMALL_DELAY_MS);
1594		return Boolean.TRUE;
1595		}
1596		}
1597
1598	<	class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
1599	<	void realRun() throws InterruptedException {
1600	<	Thread.sleep(SMALL_DELAY_MS);
1598	>	public class MediumRunnable extends CheckedRunnable {
1599	>	protected void realRun() throws Throwable {
1600	>	delay(MEDIUM_DELAY_MS);
1601		}
1602		}
1603
1604	<	class MediumRunnable extends CheckedRunnable {
1605	<	void realRun() throws Throwable {
1606	<	Thread.sleep(MEDIUM_DELAY_MS);
1604	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1605	>	protected void realRun() throws InterruptedException {
1606	>	delay(MEDIUM_DELAY_MS);
1607		}
1608		}
1609
1610	<	class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1611	<	void realRun() throws InterruptedException {
1612	<	Thread.sleep(MEDIUM_DELAY_MS);
1613	<	}
1610	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1611	>	return new CheckedRunnable() {
1612	>	protected void realRun() {
1613	>	try {
1614	>	delay(timeoutMillis);
1615	>	} catch (InterruptedException ok) {}
1616	>	}};
1617		}
1618
1619	<	class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1620	<	void realRun() {
1619	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1620	>	protected void realRun() {
1621		try {
1622	<	Thread.sleep(MEDIUM_DELAY_MS);
1623	<	}
539	<	catch (InterruptedException ok) {
540	<	}
1622	>	delay(MEDIUM_DELAY_MS);
1623	>	} catch (InterruptedException ok) {}
1624		}
1625		}
1626
1627	<	class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1628	<	void realRun() {
1627	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1628	>	protected void realRun() {
1629		try {
1630	<	Thread.sleep(LONG_DELAY_MS);
1631	<	}
549	<	catch (InterruptedException ok) {
550	<	}
1630	>	delay(LONG_DELAY_MS);
1631	>	} catch (InterruptedException ok) {}
1632		}
1633		}
1634
1635		/**
1636		* For use as ThreadFactory in constructors
1637		*/
1638	<	static class SimpleThreadFactory implements ThreadFactory {
1638	>	public static class SimpleThreadFactory implements ThreadFactory {
1639		public Thread newThread(Runnable r) {
1640		return new Thread(r);
1641		}
1642		}
1643
1644	<	static class TrackedShortRunnable implements Runnable {
1645	<	volatile boolean done = false;
1644	>	public interface TrackedRunnable extends Runnable {
1645	>	boolean isDone();
1646	>	}
1647	>
1648	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1649	>	return new TrackedRunnable() {
1650	>	private volatile boolean done = false;
1651	>	public boolean isDone() { return done; }
1652	>	public void run() {
1653	>	try {
1654	>	delay(timeoutMillis);
1655	>	done = true;
1656	>	} catch (InterruptedException ok) {}
1657	>	}
1658	>	};
1659	>	}
1660	>
1661	>	public static class TrackedShortRunnable implements Runnable {
1662	>	public volatile boolean done = false;
1663		public void run() {
1664		try {
1665	<	Thread.sleep(SMALL_DELAY_MS);
1665	>	delay(SHORT_DELAY_MS);
1666		done = true;
1667	<	} catch (InterruptedException ok) {
570	<	}
1667	>	} catch (InterruptedException ok) {}
1668		}
1669		}
1670
1671	<	static class TrackedMediumRunnable implements Runnable {
1672	<	volatile boolean done = false;
1671	>	public static class TrackedSmallRunnable implements Runnable {
1672	>	public volatile boolean done = false;
1673		public void run() {
1674		try {
1675	<	Thread.sleep(MEDIUM_DELAY_MS);
1675	>	delay(SMALL_DELAY_MS);
1676		done = true;
1677	<	} catch (InterruptedException ok) {
581	<	}
1677	>	} catch (InterruptedException ok) {}
1678		}
1679		}
1680
1681	<	static class TrackedLongRunnable implements Runnable {
1682	<	volatile boolean done = false;
1681	>	public static class TrackedMediumRunnable implements Runnable {
1682	>	public volatile boolean done = false;
1683		public void run() {
1684		try {
1685	<	Thread.sleep(LONG_DELAY_MS);
1685	>	delay(MEDIUM_DELAY_MS);
1686		done = true;
1687	<	} catch (InterruptedException ok) {
592	<	}
1687	>	} catch (InterruptedException ok) {}
1688		}
1689		}
1690
1691	<	static class TrackedNoOpRunnable implements Runnable {
1692	<	volatile boolean done = false;
1691	>	public static class TrackedLongRunnable implements Runnable {
1692	>	public volatile boolean done = false;
1693	>	public void run() {
1694	>	try {
1695	>	delay(LONG_DELAY_MS);
1696	>	done = true;
1697	>	} catch (InterruptedException ok) {}
1698	>	}
1699	>	}
1700	>
1701	>	public static class TrackedNoOpRunnable implements Runnable {
1702	>	public volatile boolean done = false;
1703		public void run() {
1704		done = true;
1705		}
1706		}
1707
1708	<	static class TrackedCallable implements Callable {
1709	<	volatile boolean done = false;
1708	>	public static class TrackedCallable implements Callable {
1709	>	public volatile boolean done = false;
1710		public Object call() {
1711		try {
1712	<	Thread.sleep(SMALL_DELAY_MS);
1712	>	delay(SMALL_DELAY_MS);
1713		done = true;
1714	<	} catch (InterruptedException ok) {
610	<	}
1714	>	} catch (InterruptedException ok) {}
1715		return Boolean.TRUE;
1716		}
1717		}
1718
1719	+	/**
1720	+	* Analog of CheckedRunnable for RecursiveAction
1721	+	*/
1722	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1723	+	protected abstract void realCompute() throws Throwable;
1724	+
1725	+	@Override protected final void compute() {
1726	+	try {
1727	+	realCompute();
1728	+	} catch (Throwable fail) {
1729	+	threadUnexpectedException(fail);
1730	+	}
1731	+	}
1732	+	}
1733	+
1734	+	/**
1735	+	* Analog of CheckedCallable for RecursiveTask
1736	+	*/
1737	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1738	+	protected abstract T realCompute() throws Throwable;
1739	+
1740	+	@Override protected final T compute() {
1741	+	try {
1742	+	return realCompute();
1743	+	} catch (Throwable fail) {
1744	+	threadUnexpectedException(fail);
1745	+	return null;
1746	+	}
1747	+	}
1748	+	}
1749
1750		/**
1751		* For use as RejectedExecutionHandler in constructors
1752		*/
1753	<	static class NoOpREHandler implements RejectedExecutionHandler {
1753	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1754		public void rejectedExecution(Runnable r,
1755		ThreadPoolExecutor executor) {}
1756		}
1757
1758	+	/**
1759	+	* A CyclicBarrier that uses timed await and fails with
1760	+	* AssertionFailedErrors instead of throwing checked exceptions.
1761	+	*/
1762	+	public static class CheckedBarrier extends CyclicBarrier {
1763	+	public CheckedBarrier(int parties) { super(parties); }
1764	+
1765	+	public int await() {
1766	+	try {
1767	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1768	+	} catch (TimeoutException timedOut) {
1769	+	throw new AssertionFailedError("timed out");
1770	+	} catch (Exception fail) {
1771	+	AssertionFailedError afe =
1772	+	new AssertionFailedError("Unexpected exception: " + fail);
1773	+	afe.initCause(fail);
1774	+	throw afe;
1775	+	}
1776	+	}
1777	+	}
1778	+
1779	+	void checkEmpty(BlockingQueue q) {
1780	+	try {
1781	+	assertTrue(q.isEmpty());
1782	+	assertEquals(0, q.size());
1783	+	assertNull(q.peek());
1784	+	assertNull(q.poll());
1785	+	assertNull(q.poll(0, MILLISECONDS));
1786	+	assertEquals(q.toString(), "[]");
1787	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1788	+	assertFalse(q.iterator().hasNext());
1789	+	try {
1790	+	q.element();
1791	+	shouldThrow();
1792	+	} catch (NoSuchElementException success) {}
1793	+	try {
1794	+	q.iterator().next();
1795	+	shouldThrow();
1796	+	} catch (NoSuchElementException success) {}
1797	+	try {
1798	+	q.remove();
1799	+	shouldThrow();
1800	+	} catch (NoSuchElementException success) {}
1801	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1802	+	}
1803	+
1804	+	void assertSerialEquals(Object x, Object y) {
1805	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1806	+	}
1807	+
1808	+	void assertNotSerialEquals(Object x, Object y) {
1809	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1810	+	}
1811	+
1812	+	byte[] serialBytes(Object o) {
1813	+	try {
1814	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1815	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1816	+	oos.writeObject(o);
1817	+	oos.flush();
1818	+	oos.close();
1819	+	return bos.toByteArray();
1820	+	} catch (Throwable fail) {
1821	+	threadUnexpectedException(fail);
1822	+	return new byte[0];
1823	+	}
1824	+	}
1825	+
1826	+	@SuppressWarnings("unchecked")
1827	+	<T> T serialClone(T o) {
1828	+	try {
1829	+	ObjectInputStream ois = new ObjectInputStream
1830	+	(new ByteArrayInputStream(serialBytes(o)));
1831	+	T clone = (T) ois.readObject();
1832	+	assertSame(o.getClass(), clone.getClass());
1833	+	return clone;
1834	+	} catch (Throwable fail) {
1835	+	threadUnexpectedException(fail);
1836	+	return null;
1837	+	}
1838	+	}
1839	+
1840	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1841	+	Runnable... throwingActions) {
1842	+	for (Runnable throwingAction : throwingActions) {
1843	+	boolean threw = false;
1844	+	try { throwingAction.run(); }
1845	+	catch (Throwable t) {
1846	+	threw = true;
1847	+	if (!expectedExceptionClass.isInstance(t)) {
1848	+	AssertionFailedError afe =
1849	+	new AssertionFailedError
1850	+	("Expected " + expectedExceptionClass.getName() +
1851	+	", got " + t.getClass().getName());
1852	+	afe.initCause(t);
1853	+	threadUnexpectedException(afe);
1854	+	}
1855	+	}
1856	+	if (!threw)
1857	+	shouldThrow(expectedExceptionClass.getName());
1858	+	}
1859	+	}
1860	+
1861	+	public void assertIteratorExhausted(Iterator<?> it) {
1862	+	try {
1863	+	it.next();
1864	+	shouldThrow();
1865	+	} catch (NoSuchElementException success) {}
1866	+	assertFalse(it.hasNext());
1867	+	}
1868	+
1869	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1870	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1871	+	}
1872	+
1873	+	public Runnable runnableThrowing(final RuntimeException ex) {
1874	+	return new Runnable() { public void run() { throw ex; }};
1875	+	}
1876	+
1877	+	/** A reusable thread pool to be shared by tests. */
1878	+	static final ExecutorService cachedThreadPool =
1879	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1880	+	1000L, MILLISECONDS,
1881	+	new SynchronousQueue<Runnable>());
1882	+
1883	+	static <T> void shuffle(T[] array) {
1884	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1885	+	}
1886		}

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