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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.34 by jsr166, Fri Jul 31 23:53:23 2009 UTC vs.
Revision 1.212 by jsr166, Fri Dec 9 04:24:07 2016 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests
12	>	* @modules java.base/java.util.concurrent:open
13	>	*          java.management
14	>	* @build *
15	>	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
16	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
17	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 -Djava.util.secureRandomSeed=true JSR166TestCase
18	>	*/
19	>
20	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
21	>	import static java.util.concurrent.TimeUnit.MINUTES;
22	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
23	>
24	>	import java.io.ByteArrayInputStream;
25	>	import java.io.ByteArrayOutputStream;
26	>	import java.io.ObjectInputStream;
27	>	import java.io.ObjectOutputStream;
28	>	import java.lang.management.ManagementFactory;
29	>	import java.lang.management.ThreadInfo;
30	>	import java.lang.management.ThreadMXBean;
31	>	import java.lang.reflect.Constructor;
32	>	import java.lang.reflect.Method;
33	>	import java.lang.reflect.Modifier;
34	>	import java.nio.file.Files;
35	>	import java.nio.file.Paths;
36	>	import java.security.CodeSource;
37	>	import java.security.Permission;
38	>	import java.security.PermissionCollection;
39	>	import java.security.Permissions;
40	>	import java.security.Policy;
41	>	import java.security.ProtectionDomain;
42	>	import java.security.SecurityPermission;
43	>	import java.util.ArrayList;
44	>	import java.util.Arrays;
45	>	import java.util.Collection;
46	>	import java.util.Collections;
47	>	import java.util.Date;
48	>	import java.util.Enumeration;
49	>	import java.util.Iterator;
50	>	import java.util.List;
51	>	import java.util.NoSuchElementException;
52	>	import java.util.PropertyPermission;
53	>	import java.util.concurrent.BlockingQueue;
54	>	import java.util.concurrent.Callable;
55	>	import java.util.concurrent.CountDownLatch;
56	>	import java.util.concurrent.CyclicBarrier;
57	>	import java.util.concurrent.ExecutionException;
58	>	import java.util.concurrent.Executors;
59	>	import java.util.concurrent.ExecutorService;
60	>	import java.util.concurrent.ForkJoinPool;
61	>	import java.util.concurrent.Future;
62	>	import java.util.concurrent.RecursiveAction;
63	>	import java.util.concurrent.RecursiveTask;
64	>	import java.util.concurrent.RejectedExecutionHandler;
65	>	import java.util.concurrent.Semaphore;
66	>	import java.util.concurrent.SynchronousQueue;
67	>	import java.util.concurrent.ThreadFactory;
68	>	import java.util.concurrent.ThreadLocalRandom;
69	>	import java.util.concurrent.ThreadPoolExecutor;
70	>	import java.util.concurrent.TimeoutException;
71	>	import java.util.concurrent.atomic.AtomicBoolean;
72	>	import java.util.concurrent.atomic.AtomicReference;
73	>	import java.util.regex.Matcher;
74	>	import java.util.regex.Pattern;
75	>
76	>	import junit.framework.AssertionFailedError;
77	>	import junit.framework.Test;
78	>	import junit.framework.TestCase;
79	>	import junit.framework.TestResult;
80	>	import junit.framework.TestSuite;
81
82		/**
83		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 22 | Line 89 | import java.security.*;
89		*
90		* <ol>
91		*
92	<	* <li> All assertions in code running in generated threads must use
92	>	* <li>All assertions in code running in generated threads must use
93		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
94		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
95	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
95	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
96		* particularly recommended) for other code to use these forms too.
97		* Only the most typically used JUnit assertion methods are defined
98	<	* this way, but enough to live with.</li>
98	>	* this way, but enough to live with.
99		*
100	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
101	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
100	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
101	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
102		* them. These methods are used to clear and check for thread
103	<	* assertion failures.</li>
103	>	* assertion failures.
104		*
105	<	* <li>All delays and timeouts must use one of the constants <tt>
106	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
107	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
105	>	* <li>All delays and timeouts must use one of the constants {@code
106	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
107	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
108		* discriminable from zero time, and always allows enough time for the
109		* small amounts of computation (creating a thread, calling a few
110		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
111		* is always discriminable as larger than SHORT and smaller than
112		* MEDIUM.  And so on. These constants are set to conservative values,
113		* but even so, if there is ever any doubt, they can all be increased
114	<	* in one spot to rerun tests on slower platforms.</li>
114	>	* in one spot to rerun tests on slower platforms.
115		*
116	<	* <li> All threads generated must be joined inside each test case
117	<	* method (or <tt>fail</tt> to do so) before returning from the
118	<	* method. The <tt> joinPool</tt> method can be used to do this when
119	<	* using Executors.</li>
116	>	* <li>All threads generated must be joined inside each test case
117	>	* method (or {@code fail} to do so) before returning from the
118	>	* method. The {@code joinPool} method can be used to do this when
119	>	* using Executors.
120		*
121		* </ol>
122		*
123	<	* <p> <b>Other notes</b>
123	>	* <p><b>Other notes</b>
124		* <ul>
125		*
126	<	* <li> Usually, there is one testcase method per JSR166 method
126	>	* <li>Usually, there is one testcase method per JSR166 method
127		* covering "normal" operation, and then as many exception-testing
128		* methods as there are exceptions the method can throw. Sometimes
129		* there are multiple tests per JSR166 method when the different
130		* "normal" behaviors differ significantly. And sometimes testcases
131	<	* cover multiple methods when they cannot be tested in
65	<	* isolation.</li>
131	>	* cover multiple methods when they cannot be tested in isolation.
132		*
133	<	* <li> The documentation style for testcases is to provide as javadoc
133	>	* <li>The documentation style for testcases is to provide as javadoc
134		* a simple sentence or two describing the property that the testcase
135		* method purports to test. The javadocs do not say anything about how
136	<	* the property is tested. To find out, read the code.</li>
136	>	* the property is tested. To find out, read the code.
137		*
138	<	* <li> These tests are "conformance tests", and do not attempt to
138	>	* <li>These tests are "conformance tests", and do not attempt to
139		* test throughput, latency, scalability or other performance factors
140		* (see the separate "jtreg" tests for a set intended to check these
141		* for the most central aspects of functionality.) So, most tests use
142		* the smallest sensible numbers of threads, collection sizes, etc
143	<	* needed to check basic conformance.</li>
143	>	* needed to check basic conformance.
144		*
145		* <li>The test classes currently do not declare inclusion in
146		* any particular package to simplify things for people integrating
147	<	* them in TCK test suites.</li>
147	>	* them in TCK test suites.
148		*
149	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
150	<	* runs all JSR166 unit tests.</li>
149	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
150	>	* runs all JSR166 unit tests.
151		*
152		* </ul>
153		*/
154		public class JSR166TestCase extends TestCase {
155	+	private static final boolean useSecurityManager =
156	+	Boolean.getBoolean("jsr166.useSecurityManager");
157	+
158	+	protected static final boolean expensiveTests =
159	+	Boolean.getBoolean("jsr166.expensiveTests");
160	+
161		/**
162	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
162	>	* If true, also run tests that are not part of the official tck
163	>	* because they test unspecified implementation details.
164		*/
165	<	public static void main (String[] args) {
166	<	int iters = 1;
167	<	if (args.length > 0)
168	<	iters = Integer.parseInt(args[0]);
169	<	Test s = suite();
170	<	for (int i = 0; i < iters; ++i) {
171	<	junit.textui.TestRunner.run (s);
165	>	protected static final boolean testImplementationDetails =
166	>	Boolean.getBoolean("jsr166.testImplementationDetails");
167	>
168	>	/**
169	>	* If true, report on stdout all "slow" tests, that is, ones that
170	>	* take more than profileThreshold milliseconds to execute.
171	>	*/
172	>	private static final boolean profileTests =
173	>	Boolean.getBoolean("jsr166.profileTests");
174	>
175	>	/**
176	>	* The number of milliseconds that tests are permitted for
177	>	* execution without being reported, when profileTests is set.
178	>	*/
179	>	private static final long profileThreshold =
180	>	Long.getLong("jsr166.profileThreshold", 100);
181	>
182	>	/**
183	>	* The number of repetitions per test (for tickling rare bugs).
184	>	*/
185	>	private static final int runsPerTest =
186	>	Integer.getInteger("jsr166.runsPerTest", 1);
187	>
188	>	/**
189	>	* The number of repetitions of the test suite (for finding leaks?).
190	>	*/
191	>	private static final int suiteRuns =
192	>	Integer.getInteger("jsr166.suiteRuns", 1);
193	>
194	>	/**
195	>	* Returns the value of the system property, or NaN if not defined.
196	>	*/
197	>	private static float systemPropertyValue(String name) {
198	>	String floatString = System.getProperty(name);
199	>	if (floatString == null)
200	>	return Float.NaN;
201	>	try {
202	>	return Float.parseFloat(floatString);
203	>	} catch (NumberFormatException ex) {
204	>	throw new IllegalArgumentException(
205	>	String.format("Bad float value in system property %s=%s",
206	>	name, floatString));
207	>	}
208	>	}
209	>
210	>	/**
211	>	* The scaling factor to apply to standard delays used in tests.
212	>	* May be initialized from any of:
213	>	* - the "jsr166.delay.factor" system property
214	>	* - the "test.timeout.factor" system property (as used by jtreg)
215	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
216	>	* - hard-coded fuzz factor when using a known slowpoke VM
217	>	*/
218	>	private static final float delayFactor = delayFactor();
219	>
220	>	private static float delayFactor() {
221	>	float x;
222	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
223	>	return x;
224	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
225	>	return x;
226	>	String prop = System.getProperty("java.vm.version");
227	>	if (prop != null && prop.matches(".*debug.*"))
228	>	return 4.0f; // How much slower is fastdebug than product?!
229	>	return 1.0f;
230	>	}
231	>
232	>	public JSR166TestCase() { super(); }
233	>	public JSR166TestCase(String name) { super(name); }
234	>
235	>	/**
236	>	* A filter for tests to run, matching strings of the form
237	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
238	>	* Usefully combined with jsr166.runsPerTest.
239	>	*/
240	>	private static final Pattern methodFilter = methodFilter();
241	>
242	>	private static Pattern methodFilter() {
243	>	String regex = System.getProperty("jsr166.methodFilter");
244	>	return (regex == null) ? null : Pattern.compile(regex);
245	>	}
246	>
247	>	// Instrumentation to debug very rare, but very annoying hung test runs.
248	>	static volatile TestCase currentTestCase;
249	>	// static volatile int currentRun = 0;
250	>	static {
251	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
252	>	// Avoid spurious reports with enormous runsPerTest.
253	>	// A single test case run should never take more than 1 second.
254	>	// But let's cap it at the high end too ...
255	>	final int timeoutMinutes =
256	>	Math.min(15, Math.max(runsPerTest / 60, 1));
257	>	for (TestCase lastTestCase = currentTestCase;;) {
258	>	try { MINUTES.sleep(timeoutMinutes); }
259	>	catch (InterruptedException unexpected) { break; }
260	>	if (lastTestCase == currentTestCase) {
261	>	System.err.printf(
262	>	"Looks like we're stuck running test: %s%n",
263	>	lastTestCase);
264	>	//                     System.err.printf(
265	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
266	>	//                         lastTestCase, currentRun, runsPerTest);
267	>	//                     System.err.println("availableProcessors=" +
268	>	//                         Runtime.getRuntime().availableProcessors());
269	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
270	>	dumpTestThreads();
271	>	// one stack dump is probably enough; more would be spam
272	>	break;
273	>	}
274	>	lastTestCase = currentTestCase;
275	>	}}};
276	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
277	>	thread.setDaemon(true);
278	>	thread.start();
279	>	}
280	>
281	>	//     public static String cpuModel() {
282	>	//         try {
283	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
284	>	//                 .matcher(new String(
285	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
286	>	//             matcher.find();
287	>	//             return matcher.group(1);
288	>	//         } catch (Exception ex) { return null; }
289	>	//     }
290	>
291	>	public void runBare() throws Throwable {
292	>	currentTestCase = this;
293	>	if (methodFilter == null
294	>	|| methodFilter.matcher(toString()).find())
295	>	super.runBare();
296	>	}
297	>
298	>	protected void runTest() throws Throwable {
299	>	for (int i = 0; i < runsPerTest; i++) {
300	>	// currentRun = i;
301	>	if (profileTests)
302	>	runTestProfiled();
303	>	else
304	>	super.runTest();
305	>	}
306	>	}
307	>
308	>	protected void runTestProfiled() throws Throwable {
309	>	for (int i = 0; i < 2; i++) {
310	>	long startTime = System.nanoTime();
311	>	super.runTest();
312	>	long elapsedMillis = millisElapsedSince(startTime);
313	>	if (elapsedMillis < profileThreshold)
314	>	break;
315	>	// Never report first run of any test; treat it as a
316	>	// warmup run, notably to trigger all needed classloading,
317	>	if (i > 0)
318	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
319	>	}
320	>	}
321	>
322	>	/**
323	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
324	>	*/
325	>	public static void main(String[] args) {
326	>	main(suite(), args);
327	>	}
328	>
329	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
330	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
331	>	long runTime;
332	>	public void startTest(Test test) {}
333	>	protected void printHeader(long runTime) {
334	>	this.runTime = runTime; // defer printing for later
335	>	}
336	>	protected void printFooter(TestResult result) {
337	>	if (result.wasSuccessful()) {
338	>	getWriter().println("OK (" + result.runCount() + " tests)"
339	>	+ "  Time: " + elapsedTimeAsString(runTime));
340	>	} else {
341	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
342	>	super.printFooter(result);
343	>	}
344	>	}
345	>	}
346	>
347	>	/**
348	>	* Returns a TestRunner that doesn't bother with unnecessary
349	>	* fluff, like printing a "." for each test case.
350	>	*/
351	>	static junit.textui.TestRunner newPithyTestRunner() {
352	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
353	>	runner.setPrinter(new PithyResultPrinter(System.out));
354	>	return runner;
355	>	}
356	>
357	>	/**
358	>	* Runs all unit tests in the given test suite.
359	>	* Actual behavior influenced by jsr166.* system properties.
360	>	*/
361	>	static void main(Test suite, String[] args) {
362	>	if (useSecurityManager) {
363	>	System.err.println("Setting a permissive security manager");
364	>	Policy.setPolicy(permissivePolicy());
365	>	System.setSecurityManager(new SecurityManager());
366	>	}
367	>	for (int i = 0; i < suiteRuns; i++) {
368	>	TestResult result = newPithyTestRunner().doRun(suite);
369	>	if (!result.wasSuccessful())
370	>	System.exit(1);
371		System.gc();
372		System.runFinalization();
373		}
102	–	System.exit(0);
374		}
375
376	<	/**
377	<	* Collects all JSR166 unit tests as one suite
378	<	*/
379	<	public static Test suite ( ) {
380	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
376	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
377	>	TestSuite suite = new TestSuite();
378	>	for (Object suiteOrClass : suiteOrClasses) {
379	>	if (suiteOrClass instanceof TestSuite)
380	>	suite.addTest((TestSuite) suiteOrClass);
381	>	else if (suiteOrClass instanceof Class)
382	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
383	>	else
384	>	throw new ClassCastException("not a test suite or class");
385	>	}
386	>	return suite;
387	>	}
388
389	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
390	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
391	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
392	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
393	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
394	<	suite.addTest(new TestSuite(PhaserTest.class));
395	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
396	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
397	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
398	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
399	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
400	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
401	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
402	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
403	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
404	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
405	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
406	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
407	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
408	<	suite.addTest(new TestSuite(AtomicLongTest.class));
409	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
410	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
411	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
412	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
413	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
414	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
415	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
416	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
417	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
418	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
419	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
420	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
421	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
422	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
423	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
424	<	suite.addTest(new TestSuite(DelayQueueTest.class));
425	<	suite.addTest(new TestSuite(EntryTest.class));
426	<	suite.addTest(new TestSuite(ExchangerTest.class));
427	<	suite.addTest(new TestSuite(ExecutorsTest.class));
428	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
429	<	suite.addTest(new TestSuite(FutureTaskTest.class));
430	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
431	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
432	<	suite.addTest(new TestSuite(LinkedListTest.class));
433	<	suite.addTest(new TestSuite(LockSupportTest.class));
434	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
435	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
436	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
437	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
438	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
439	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
440	<	suite.addTest(new TestSuite(SemaphoreTest.class));
441	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
442	<	suite.addTest(new TestSuite(SystemTest.class));
443	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
444	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
445	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
446	<	suite.addTest(new TestSuite(ThreadTest.class));
447	<	suite.addTest(new TestSuite(TimeUnitTest.class));
448	<	suite.addTest(new TestSuite(TreeMapTest.class));
449	<	suite.addTest(new TestSuite(TreeSetTest.class));
450	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
451	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
389	>	public static void addNamedTestClasses(TestSuite suite,
390	>	String... testClassNames) {
391	>	for (String testClassName : testClassNames) {
392	>	try {
393	>	Class<?> testClass = Class.forName(testClassName);
394	>	Method m = testClass.getDeclaredMethod("suite",
395	>	new Class<?>[0]);
396	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
397	>	} catch (Exception e) {
398	>	throw new Error("Missing test class", e);
399	>	}
400	>	}
401	>	}
402	>
403	>	public static final double JAVA_CLASS_VERSION;
404	>	public static final String JAVA_SPECIFICATION_VERSION;
405	>	static {
406	>	try {
407	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
408	>	new java.security.PrivilegedAction<Double>() {
409	>	public Double run() {
410	>	return Double.valueOf(System.getProperty("java.class.version"));}});
411	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
412	>	new java.security.PrivilegedAction<String>() {
413	>	public String run() {
414	>	return System.getProperty("java.specification.version");}});
415	>	} catch (Throwable t) {
416	>	throw new Error(t);
417	>	}
418	>	}
419	>
420	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
421	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
422	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
423	>	public static boolean atLeastJava9() {
424	>	return JAVA_CLASS_VERSION >= 53.0
425	>	// As of 2015-09, java9 still uses 52.0 class file version
426	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
427	>	}
428	>	public static boolean atLeastJava10() {
429	>	return JAVA_CLASS_VERSION >= 54.0
430	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
431	>	}
432	>
433	>	/**
434	>	* Collects all JSR166 unit tests as one suite.
435	>	*/
436	>	public static Test suite() {
437	>	// Java7+ test classes
438	>	TestSuite suite = newTestSuite(
439	>	ForkJoinPoolTest.suite(),
440	>	ForkJoinTaskTest.suite(),
441	>	RecursiveActionTest.suite(),
442	>	RecursiveTaskTest.suite(),
443	>	LinkedTransferQueueTest.suite(),
444	>	PhaserTest.suite(),
445	>	ThreadLocalRandomTest.suite(),
446	>	AbstractExecutorServiceTest.suite(),
447	>	AbstractQueueTest.suite(),
448	>	AbstractQueuedSynchronizerTest.suite(),
449	>	AbstractQueuedLongSynchronizerTest.suite(),
450	>	ArrayBlockingQueueTest.suite(),
451	>	ArrayDequeTest.suite(),
452	>	ArrayListTest.suite(),
453	>	AtomicBooleanTest.suite(),
454	>	AtomicIntegerArrayTest.suite(),
455	>	AtomicIntegerFieldUpdaterTest.suite(),
456	>	AtomicIntegerTest.suite(),
457	>	AtomicLongArrayTest.suite(),
458	>	AtomicLongFieldUpdaterTest.suite(),
459	>	AtomicLongTest.suite(),
460	>	AtomicMarkableReferenceTest.suite(),
461	>	AtomicReferenceArrayTest.suite(),
462	>	AtomicReferenceFieldUpdaterTest.suite(),
463	>	AtomicReferenceTest.suite(),
464	>	AtomicStampedReferenceTest.suite(),
465	>	ConcurrentHashMapTest.suite(),
466	>	ConcurrentLinkedDequeTest.suite(),
467	>	ConcurrentLinkedQueueTest.suite(),
468	>	ConcurrentSkipListMapTest.suite(),
469	>	ConcurrentSkipListSubMapTest.suite(),
470	>	ConcurrentSkipListSetTest.suite(),
471	>	ConcurrentSkipListSubSetTest.suite(),
472	>	CopyOnWriteArrayListTest.suite(),
473	>	CopyOnWriteArraySetTest.suite(),
474	>	CountDownLatchTest.suite(),
475	>	CountedCompleterTest.suite(),
476	>	CyclicBarrierTest.suite(),
477	>	DelayQueueTest.suite(),
478	>	EntryTest.suite(),
479	>	ExchangerTest.suite(),
480	>	ExecutorsTest.suite(),
481	>	ExecutorCompletionServiceTest.suite(),
482	>	FutureTaskTest.suite(),
483	>	LinkedBlockingDequeTest.suite(),
484	>	LinkedBlockingQueueTest.suite(),
485	>	LinkedListTest.suite(),
486	>	LockSupportTest.suite(),
487	>	PriorityBlockingQueueTest.suite(),
488	>	PriorityQueueTest.suite(),
489	>	ReentrantLockTest.suite(),
490	>	ReentrantReadWriteLockTest.suite(),
491	>	ScheduledExecutorTest.suite(),
492	>	ScheduledExecutorSubclassTest.suite(),
493	>	SemaphoreTest.suite(),
494	>	SynchronousQueueTest.suite(),
495	>	SystemTest.suite(),
496	>	ThreadLocalTest.suite(),
497	>	ThreadPoolExecutorTest.suite(),
498	>	ThreadPoolExecutorSubclassTest.suite(),
499	>	ThreadTest.suite(),
500	>	TimeUnitTest.suite(),
501	>	TreeMapTest.suite(),
502	>	TreeSetTest.suite(),
503	>	TreeSubMapTest.suite(),
504	>	TreeSubSetTest.suite(),
505	>	VectorTest.suite());
506	>
507	>	// Java8+ test classes
508	>	if (atLeastJava8()) {
509	>	String[] java8TestClassNames = {
510	>	"ArrayDeque8Test",
511	>	"Atomic8Test",
512	>	"CompletableFutureTest",
513	>	"ConcurrentHashMap8Test",
514	>	"CountedCompleter8Test",
515	>	"DoubleAccumulatorTest",
516	>	"DoubleAdderTest",
517	>	"ForkJoinPool8Test",
518	>	"ForkJoinTask8Test",
519	>	"LongAccumulatorTest",
520	>	"LongAdderTest",
521	>	"SplittableRandomTest",
522	>	"StampedLockTest",
523	>	"SubmissionPublisherTest",
524	>	"ThreadLocalRandom8Test",
525	>	"TimeUnit8Test",
526	>	};
527	>	addNamedTestClasses(suite, java8TestClassNames);
528	>	}
529	>
530	>	// Java9+ test classes
531	>	if (atLeastJava9()) {
532	>	String[] java9TestClassNames = {
533	>	"AtomicBoolean9Test",
534	>	"AtomicInteger9Test",
535	>	"AtomicIntegerArray9Test",
536	>	"AtomicLong9Test",
537	>	"AtomicLongArray9Test",
538	>	"AtomicReference9Test",
539	>	"AtomicReferenceArray9Test",
540	>	"ExecutorCompletionService9Test",
541	>	};
542	>	addNamedTestClasses(suite, java9TestClassNames);
543	>	}
544
545		return suite;
546		}
547
548	+	/** Returns list of junit-style test method names in given class. */
549	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
550	+	Method[] methods = testClass.getDeclaredMethods();
551	+	ArrayList<String> names = new ArrayList<String>(methods.length);
552	+	for (Method method : methods) {
553	+	if (method.getName().startsWith("test")
554	+	&& Modifier.isPublic(method.getModifiers())
555	+	// method.getParameterCount() requires jdk8+
556	+	&& method.getParameterTypes().length == 0) {
557	+	names.add(method.getName());
558	+	}
559	+	}
560	+	return names;
561	+	}
562	+
563	+	/**
564	+	* Returns junit-style testSuite for the given test class, but
565	+	* parameterized by passing extra data to each test.
566	+	*/
567	+	public static <ExtraData> Test parameterizedTestSuite
568	+	(Class<? extends JSR166TestCase> testClass,
569	+	Class<ExtraData> dataClass,
570	+	ExtraData data) {
571	+	try {
572	+	TestSuite suite = new TestSuite();
573	+	Constructor c =
574	+	testClass.getDeclaredConstructor(dataClass, String.class);
575	+	for (String methodName : testMethodNames(testClass))
576	+	suite.addTest((Test) c.newInstance(data, methodName));
577	+	return suite;
578	+	} catch (Exception e) {
579	+	throw new Error(e);
580	+	}
581	+	}
582	+
583	+	/**
584	+	* Returns junit-style testSuite for the jdk8 extension of the
585	+	* given test class, but parameterized by passing extra data to
586	+	* each test.  Uses reflection to allow compilation in jdk7.
587	+	*/
588	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
589	+	(Class<? extends JSR166TestCase> testClass,
590	+	Class<ExtraData> dataClass,
591	+	ExtraData data) {
592	+	if (atLeastJava8()) {
593	+	String name = testClass.getName();
594	+	String name8 = name.replaceAll("Test$", "8Test");
595	+	if (name.equals(name8)) throw new Error(name);
596	+	try {
597	+	return (Test)
598	+	Class.forName(name8)
599	+	.getMethod("testSuite", new Class[] { dataClass })
600	+	.invoke(null, data);
601	+	} catch (Exception e) {
602	+	throw new Error(e);
603	+	}
604	+	} else {
605	+	return new TestSuite();
606	+	}
607	+	}
608	+
609	+	// Delays for timing-dependent tests, in milliseconds.
610
611		public static long SHORT_DELAY_MS;
612		public static long SMALL_DELAY_MS;
613		public static long MEDIUM_DELAY_MS;
614		public static long LONG_DELAY_MS;
615
184	–
616		/**
617	<	* Returns the shortest timed delay. This could
618	<	* be reimplemented to use for example a Property.
617	>	* Returns the shortest timed delay. This can be scaled up for
618	>	* slow machines using the jsr166.delay.factor system property,
619	>	* or via jtreg's -timeoutFactor: flag.
620	>	* http://openjdk.java.net/jtreg/command-help.html
621		*/
622		protected long getShortDelay() {
623	<	return 50;
623	>	return (long) (50 * delayFactor);
624		}
625
193	–
626		/**
627		* Sets delays as multiples of SHORT_DELAY.
628		*/
629	<	protected  void setDelays() {
629	>	protected void setDelays() {
630		SHORT_DELAY_MS = getShortDelay();
631	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
631	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
632		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
633	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
633	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
634	>	}
635	>
636	>	/**
637	>	* Returns a timeout in milliseconds to be used in tests that
638	>	* verify that operations block or time out.
639	>	*/
640	>	long timeoutMillis() {
641	>	return SHORT_DELAY_MS / 4;
642		}
643
644		/**
645	<	* Flag set true if any threadAssert methods fail
645	>	* Returns a new Date instance representing a time at least
646	>	* delayMillis milliseconds in the future.
647		*/
648	<	volatile boolean threadFailed;
648	>	Date delayedDate(long delayMillis) {
649	>	// Add 1 because currentTimeMillis is known to round into the past.
650	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
651	>	}
652
653		/**
654	<	* Initializes test to indicate that no thread assertions have failed
654	>	* The first exception encountered if any threadAssertXXX method fails.
655		*/
656	+	private final AtomicReference<Throwable> threadFailure
657	+	= new AtomicReference<Throwable>(null);
658	+
659	+	/**
660	+	* Records an exception so that it can be rethrown later in the test
661	+	* harness thread, triggering a test case failure.  Only the first
662	+	* failure is recorded; subsequent calls to this method from within
663	+	* the same test have no effect.
664	+	*/
665	+	public void threadRecordFailure(Throwable t) {
666	+	System.err.println(t);
667	+	dumpTestThreads();
668	+	threadFailure.compareAndSet(null, t);
669	+	}
670	+
671		public void setUp() {
672		setDelays();
673	<	threadFailed = false;
673	>	}
674	>
675	>	void tearDownFail(String format, Object... args) {
676	>	String msg = toString() + ": " + String.format(format, args);
677	>	System.err.println(msg);
678	>	dumpTestThreads();
679	>	throw new AssertionFailedError(msg);
680	>	}
681	>
682	>	/**
683	>	* Extra checks that get done for all test cases.
684	>	*
685	>	* Triggers test case failure if any thread assertions have failed,
686	>	* by rethrowing, in the test harness thread, any exception recorded
687	>	* earlier by threadRecordFailure.
688	>	*
689	>	* Triggers test case failure if interrupt status is set in the main thread.
690	>	*/
691	>	public void tearDown() throws Exception {
692	>	Throwable t = threadFailure.getAndSet(null);
693	>	if (t != null) {
694	>	if (t instanceof Error)
695	>	throw (Error) t;
696	>	else if (t instanceof RuntimeException)
697	>	throw (RuntimeException) t;
698	>	else if (t instanceof Exception)
699	>	throw (Exception) t;
700	>	else {
701	>	AssertionFailedError afe =
702	>	new AssertionFailedError(t.toString());
703	>	afe.initCause(t);
704	>	throw afe;
705	>	}
706	>	}
707	>
708	>	if (Thread.interrupted())
709	>	tearDownFail("interrupt status set in main thread");
710	>
711	>	checkForkJoinPoolThreadLeaks();
712		}
713
714		/**
715	<	* Triggers test case failure if any thread assertions have failed
715	>	* Finds missing PoolCleaners
716		*/
717	<	public void tearDown() {
718	<	assertFalse(threadFailed);
717	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
718	>	Thread[] survivors = new Thread[7];
719	>	int count = Thread.enumerate(survivors);
720	>	for (int i = 0; i < count; i++) {
721	>	Thread thread = survivors[i];
722	>	String name = thread.getName();
723	>	if (name.startsWith("ForkJoinPool-")) {
724	>	// give thread some time to terminate
725	>	thread.join(LONG_DELAY_MS);
726	>	if (thread.isAlive())
727	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
728	>	thread);
729	>	}
730	>	}
731	>
732	>	if (!ForkJoinPool.commonPool()
733	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
734	>	tearDownFail("ForkJoin common pool thread stuck");
735		}
736
737		/**
738	<	* Fail, also setting status to indicate current testcase should fail
738	>	* Just like fail(reason), but additionally recording (using
739	>	* threadRecordFailure) any AssertionFailedError thrown, so that
740	>	* the current testcase will fail.
741		*/
742		public void threadFail(String reason) {
743	<	threadFailed = true;
744	<	fail(reason);
743	>	try {
744	>	fail(reason);
745	>	} catch (AssertionFailedError t) {
746	>	threadRecordFailure(t);
747	>	throw t;
748	>	}
749		}
750
751		/**
752	<	* If expression not true, set status to indicate current testcase
753	<	* should fail
752	>	* Just like assertTrue(b), but additionally recording (using
753	>	* threadRecordFailure) any AssertionFailedError thrown, so that
754	>	* the current testcase will fail.
755		*/
756		public void threadAssertTrue(boolean b) {
757	<	if (!b) {
238	<	threadFailed = true;
757	>	try {
758		assertTrue(b);
759	+	} catch (AssertionFailedError t) {
760	+	threadRecordFailure(t);
761	+	throw t;
762		}
763		}
764
765		/**
766	<	* If expression not false, set status to indicate current testcase
767	<	* should fail
766	>	* Just like assertFalse(b), but additionally recording (using
767	>	* threadRecordFailure) any AssertionFailedError thrown, so that
768	>	* the current testcase will fail.
769		*/
770		public void threadAssertFalse(boolean b) {
771	<	if (b) {
249	<	threadFailed = true;
771	>	try {
772		assertFalse(b);
773	+	} catch (AssertionFailedError t) {
774	+	threadRecordFailure(t);
775	+	throw t;
776		}
777		}
778
779		/**
780	<	* If argument not null, set status to indicate current testcase
781	<	* should fail
780	>	* Just like assertNull(x), but additionally recording (using
781	>	* threadRecordFailure) any AssertionFailedError thrown, so that
782	>	* the current testcase will fail.
783		*/
784		public void threadAssertNull(Object x) {
785	<	if (x != null) {
260	<	threadFailed = true;
785	>	try {
786		assertNull(x);
787	+	} catch (AssertionFailedError t) {
788	+	threadRecordFailure(t);
789	+	throw t;
790		}
791		}
792
793		/**
794	<	* If arguments not equal, set status to indicate current testcase
795	<	* should fail
794	>	* Just like assertEquals(x, y), but additionally recording (using
795	>	* threadRecordFailure) any AssertionFailedError thrown, so that
796	>	* the current testcase will fail.
797		*/
798		public void threadAssertEquals(long x, long y) {
799	<	if (x != y) {
271	<	threadFailed = true;
799	>	try {
800		assertEquals(x, y);
801	+	} catch (AssertionFailedError t) {
802	+	threadRecordFailure(t);
803	+	throw t;
804		}
805		}
806
807		/**
808	<	* If arguments not equal, set status to indicate current testcase
809	<	* should fail
808	>	* Just like assertEquals(x, y), but additionally recording (using
809	>	* threadRecordFailure) any AssertionFailedError thrown, so that
810	>	* the current testcase will fail.
811		*/
812		public void threadAssertEquals(Object x, Object y) {
813	<	if (x != y && (x == null || !x.equals(y))) {
282	<	threadFailed = true;
813	>	try {
814		assertEquals(x, y);
815	+	} catch (AssertionFailedError fail) {
816	+	threadRecordFailure(fail);
817	+	throw fail;
818	+	} catch (Throwable fail) {
819	+	threadUnexpectedException(fail);
820		}
821		}
822
823		/**
824	<	* threadFail with message "should throw exception"
824	>	* Just like assertSame(x, y), but additionally recording (using
825	>	* threadRecordFailure) any AssertionFailedError thrown, so that
826	>	* the current testcase will fail.
827		*/
828	<	public void threadShouldThrow() {
828	>	public void threadAssertSame(Object x, Object y) {
829		try {
830	<	threadFailed = true;
831	<	fail("should throw exception");
832	<	} catch (AssertionFailedError e) {
833	<	e.printStackTrace();
296	<	throw e;
830	>	assertSame(x, y);
831	>	} catch (AssertionFailedError fail) {
832	>	threadRecordFailure(fail);
833	>	throw fail;
834		}
835		}
836
837		/**
838	<	* threadFail with message "Unexpected exception"
838	>	* Calls threadFail with message "should throw exception".
839	>	*/
840	>	public void threadShouldThrow() {
841	>	threadFail("should throw exception");
842	>	}
843	>
844	>	/**
845	>	* Calls threadFail with message "should throw" + exceptionName.
846		*/
847	<	public void threadUnexpectedException() {
848	<	threadFailed = true;
305	<	fail("Unexpected exception");
847	>	public void threadShouldThrow(String exceptionName) {
848	>	threadFail("should throw " + exceptionName);
849		}
850
851		/**
852	<	* threadFail with message "Unexpected exception", with argument
852	>	* Records the given exception using {@link #threadRecordFailure},
853	>	* then rethrows the exception, wrapping it in an
854	>	* AssertionFailedError if necessary.
855		*/
856	<	public void threadUnexpectedException(Throwable ex) {
857	<	threadFailed = true;
858	<	ex.printStackTrace();
859	<	fail("Unexpected exception: " + ex);
856	>	public void threadUnexpectedException(Throwable t) {
857	>	threadRecordFailure(t);
858	>	t.printStackTrace();
859	>	if (t instanceof RuntimeException)
860	>	throw (RuntimeException) t;
861	>	else if (t instanceof Error)
862	>	throw (Error) t;
863	>	else {
864	>	AssertionFailedError afe =
865	>	new AssertionFailedError("unexpected exception: " + t);
866	>	afe.initCause(t);
867	>	throw afe;
868	>	}
869	>	}
870	>
871	>	/**
872	>	* Delays, via Thread.sleep, for the given millisecond delay, but
873	>	* if the sleep is shorter than specified, may re-sleep or yield
874	>	* until time elapses.  Ensures that the given time, as measured
875	>	* by System.nanoTime(), has elapsed.
876	>	*/
877	>	static void delay(long millis) throws InterruptedException {
878	>	long nanos = millis * (1000 * 1000);
879	>	final long wakeupTime = System.nanoTime() + nanos;
880	>	do {
881	>	if (millis > 0L)
882	>	Thread.sleep(millis);
883	>	else // too short to sleep
884	>	Thread.yield();
885	>	nanos = wakeupTime - System.nanoTime();
886	>	millis = nanos / (1000 * 1000);
887	>	} while (nanos >= 0L);
888		}
889
890		/**
891	<	* Wait out termination of a thread pool or fail doing so
891	>	* Allows use of try-with-resources with per-test thread pools.
892		*/
893	<	public void joinPool(ExecutorService exec) {
893	>	class PoolCleaner implements AutoCloseable {
894	>	private final ExecutorService pool;
895	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
896	>	public void close() { joinPool(pool); }
897	>	}
898	>
899	>	/**
900	>	* An extension of PoolCleaner that has an action to release the pool.
901	>	*/
902	>	class PoolCleanerWithReleaser extends PoolCleaner {
903	>	private final Runnable releaser;
904	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
905	>	super(pool);
906	>	this.releaser = releaser;
907	>	}
908	>	public void close() {
909	>	try {
910	>	releaser.run();
911	>	} finally {
912	>	super.close();
913	>	}
914	>	}
915	>	}
916	>
917	>	PoolCleaner cleaner(ExecutorService pool) {
918	>	return new PoolCleaner(pool);
919	>	}
920	>
921	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
922	>	return new PoolCleanerWithReleaser(pool, releaser);
923	>	}
924	>
925	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
926	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
927	>	}
928	>
929	>	Runnable releaser(final CountDownLatch latch) {
930	>	return new Runnable() { public void run() {
931	>	do { latch.countDown(); }
932	>	while (latch.getCount() > 0);
933	>	}};
934	>	}
935	>
936	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
937	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
938	>	}
939	>
940	>	Runnable releaser(final AtomicBoolean flag) {
941	>	return new Runnable() { public void run() { flag.set(true); }};
942	>	}
943	>
944	>	/**
945	>	* Waits out termination of a thread pool or fails doing so.
946	>	*/
947	>	void joinPool(ExecutorService pool) {
948		try {
949	<	exec.shutdown();
950	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
949	>	pool.shutdown();
950	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
951	>	try {
952	>	threadFail("ExecutorService " + pool +
953	>	" did not terminate in a timely manner");
954	>	} finally {
955	>	// last resort, for the benefit of subsequent tests
956	>	pool.shutdownNow();
957	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
958	>	}
959	>	}
960		} catch (SecurityException ok) {
961		// Allowed in case test doesn't have privs
962	<	} catch (InterruptedException ie) {
963	<	fail("Unexpected exception");
962	>	} catch (InterruptedException fail) {
963	>	threadFail("Unexpected InterruptedException");
964	>	}
965	>	}
966	>
967	>	/**
968	>	* Like Runnable, but with the freedom to throw anything.
969	>	* junit folks had the same idea:
970	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
971	>	*/
972	>	interface Action { public void run() throws Throwable; }
973	>
974	>	/**
975	>	* Runs all the given actions in parallel, failing if any fail.
976	>	* Useful for running multiple variants of tests that are
977	>	* necessarily individually slow because they must block.
978	>	*/
979	>	void testInParallel(Action ... actions) {
980	>	ExecutorService pool = Executors.newCachedThreadPool();
981	>	try (PoolCleaner cleaner = cleaner(pool)) {
982	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
983	>	for (final Action action : actions)
984	>	futures.add(pool.submit(new CheckedRunnable() {
985	>	public void realRun() throws Throwable { action.run();}}));
986	>	for (Future<?> future : futures)
987	>	try {
988	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
989	>	} catch (ExecutionException ex) {
990	>	threadUnexpectedException(ex.getCause());
991	>	} catch (Exception ex) {
992	>	threadUnexpectedException(ex);
993	>	}
994		}
995		}
996
997	+	/**
998	+	* A debugging tool to print stack traces of most threads, as jstack does.
999	+	* Uninteresting threads are filtered out.
1000	+	*/
1001	+	static void dumpTestThreads() {
1002	+	SecurityManager sm = System.getSecurityManager();
1003	+	if (sm != null) {
1004	+	try {
1005	+	System.setSecurityManager(null);
1006	+	} catch (SecurityException giveUp) {
1007	+	return;
1008	+	}
1009	+	}
1010	+
1011	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1012	+	System.err.println("------ stacktrace dump start ------");
1013	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1014	+	final String name = info.getThreadName();
1015	+	String lockName;
1016	+	if ("Signal Dispatcher".equals(name))
1017	+	continue;
1018	+	if ("Reference Handler".equals(name)
1019	+	&& (lockName = info.getLockName()) != null
1020	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1021	+	continue;
1022	+	if ("Finalizer".equals(name)
1023	+	&& (lockName = info.getLockName()) != null
1024	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1025	+	continue;
1026	+	if ("checkForWedgedTest".equals(name))
1027	+	continue;
1028	+	System.err.print(info);
1029	+	}
1030	+	System.err.println("------ stacktrace dump end ------");
1031	+
1032	+	if (sm != null) System.setSecurityManager(sm);
1033	+	}
1034	+
1035	+	/**
1036	+	* Checks that thread does not terminate within the default
1037	+	* millisecond delay of {@code timeoutMillis()}.
1038	+	*/
1039	+	void assertThreadStaysAlive(Thread thread) {
1040	+	assertThreadStaysAlive(thread, timeoutMillis());
1041	+	}
1042
1043		/**
1044	<	* fail with message "should throw exception"
1044	>	* Checks that thread does not terminate within the given millisecond delay.
1045	>	*/
1046	>	void assertThreadStaysAlive(Thread thread, long millis) {
1047	>	try {
1048	>	// No need to optimize the failing case via Thread.join.
1049	>	delay(millis);
1050	>	assertTrue(thread.isAlive());
1051	>	} catch (InterruptedException fail) {
1052	>	threadFail("Unexpected InterruptedException");
1053	>	}
1054	>	}
1055	>
1056	>	/**
1057	>	* Checks that the threads do not terminate within the default
1058	>	* millisecond delay of {@code timeoutMillis()}.
1059	>	*/
1060	>	void assertThreadsStayAlive(Thread... threads) {
1061	>	assertThreadsStayAlive(timeoutMillis(), threads);
1062	>	}
1063	>
1064	>	/**
1065	>	* Checks that the threads do not terminate within the given millisecond delay.
1066	>	*/
1067	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1068	>	try {
1069	>	// No need to optimize the failing case via Thread.join.
1070	>	delay(millis);
1071	>	for (Thread thread : threads)
1072	>	assertTrue(thread.isAlive());
1073	>	} catch (InterruptedException fail) {
1074	>	threadFail("Unexpected InterruptedException");
1075	>	}
1076	>	}
1077	>
1078	>	/**
1079	>	* Checks that future.get times out, with the default timeout of
1080	>	* {@code timeoutMillis()}.
1081	>	*/
1082	>	void assertFutureTimesOut(Future future) {
1083	>	assertFutureTimesOut(future, timeoutMillis());
1084	>	}
1085	>
1086	>	/**
1087	>	* Checks that future.get times out, with the given millisecond timeout.
1088	>	*/
1089	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1090	>	long startTime = System.nanoTime();
1091	>	try {
1092	>	future.get(timeoutMillis, MILLISECONDS);
1093	>	shouldThrow();
1094	>	} catch (TimeoutException success) {
1095	>	} catch (Exception fail) {
1096	>	threadUnexpectedException(fail);
1097	>	} finally { future.cancel(true); }
1098	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1099	>	}
1100	>
1101	>	/**
1102	>	* Fails with message "should throw exception".
1103		*/
1104		public void shouldThrow() {
1105		fail("Should throw exception");
1106		}
1107
1108		/**
1109	<	* fail with message "Unexpected exception"
1109	>	* Fails with message "should throw " + exceptionName.
1110		*/
1111	<	public void unexpectedException() {
1112	<	fail("Unexpected exception");
1111	>	public void shouldThrow(String exceptionName) {
1112	>	fail("Should throw " + exceptionName);
1113		}
1114
346	–
1115		/**
1116		* The number of elements to place in collections, arrays, etc.
1117		*/
1118	<	static final int SIZE = 20;
1118	>	public static final int SIZE = 20;
1119
1120		// Some convenient Integer constants
1121
1122	<	static final Integer zero = new Integer(0);
1123	<	static final Integer one = new Integer(1);
1124	<	static final Integer two = new Integer(2);
1125	<	static final Integer three  = new Integer(3);
1126	<	static final Integer four  = new Integer(4);
1127	<	static final Integer five  = new Integer(5);
1128	<	static final Integer six = new Integer(6);
1129	<	static final Integer seven = new Integer(7);
1130	<	static final Integer eight = new Integer(8);
1131	<	static final Integer nine = new Integer(9);
1132	<	static final Integer m1  = new Integer(-1);
1133	<	static final Integer m2  = new Integer(-2);
1134	<	static final Integer m3  = new Integer(-3);
1135	<	static final Integer m4 = new Integer(-4);
1136	<	static final Integer m5 = new Integer(-5);
1137	<	static final Integer m6 = new Integer(-6);
1138	<	static final Integer m10 = new Integer(-10);
1122	>	public static final Integer zero  = new Integer(0);
1123	>	public static final Integer one   = new Integer(1);
1124	>	public static final Integer two   = new Integer(2);
1125	>	public static final Integer three = new Integer(3);
1126	>	public static final Integer four  = new Integer(4);
1127	>	public static final Integer five  = new Integer(5);
1128	>	public static final Integer six   = new Integer(6);
1129	>	public static final Integer seven = new Integer(7);
1130	>	public static final Integer eight = new Integer(8);
1131	>	public static final Integer nine  = new Integer(9);
1132	>	public static final Integer m1  = new Integer(-1);
1133	>	public static final Integer m2  = new Integer(-2);
1134	>	public static final Integer m3  = new Integer(-3);
1135	>	public static final Integer m4  = new Integer(-4);
1136	>	public static final Integer m5  = new Integer(-5);
1137	>	public static final Integer m6  = new Integer(-6);
1138	>	public static final Integer m10 = new Integer(-10);
1139	>
1140	>	/**
1141	>	* Runs Runnable r with a security policy that permits precisely
1142	>	* the specified permissions.  If there is no current security
1143	>	* manager, the runnable is run twice, both with and without a
1144	>	* security manager.  We require that any security manager permit
1145	>	* getPolicy/setPolicy.
1146	>	*/
1147	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1148	>	SecurityManager sm = System.getSecurityManager();
1149	>	if (sm == null) {
1150	>	r.run();
1151	>	}
1152	>	runWithSecurityManagerWithPermissions(r, permissions);
1153	>	}
1154
1155	+	/**
1156	+	* Runs Runnable r with a security policy that permits precisely
1157	+	* the specified permissions.  If there is no current security
1158	+	* manager, a temporary one is set for the duration of the
1159	+	* Runnable.  We require that any security manager permit
1160	+	* getPolicy/setPolicy.
1161	+	*/
1162	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1163	+	Permission... permissions) {
1164	+	SecurityManager sm = System.getSecurityManager();
1165	+	if (sm == null) {
1166	+	Policy savedPolicy = Policy.getPolicy();
1167	+	try {
1168	+	Policy.setPolicy(permissivePolicy());
1169	+	System.setSecurityManager(new SecurityManager());
1170	+	runWithSecurityManagerWithPermissions(r, permissions);
1171	+	} finally {
1172	+	System.setSecurityManager(null);
1173	+	Policy.setPolicy(savedPolicy);
1174	+	}
1175	+	} else {
1176	+	Policy savedPolicy = Policy.getPolicy();
1177	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1178	+	Policy.setPolicy(policy);
1179	+
1180	+	try {
1181	+	r.run();
1182	+	} finally {
1183	+	policy.addPermission(new SecurityPermission("setPolicy"));
1184	+	Policy.setPolicy(savedPolicy);
1185	+	}
1186	+	}
1187	+	}
1188	+
1189	+	/**
1190	+	* Runs a runnable without any permissions.
1191	+	*/
1192	+	public void runWithoutPermissions(Runnable r) {
1193	+	runWithPermissions(r);
1194	+	}
1195
1196		/**
1197		* A security policy where new permissions can be dynamically added
1198		* or all cleared.
1199		*/
1200	<	static class AdjustablePolicy extends java.security.Policy {
1200	>	public static class AdjustablePolicy extends java.security.Policy {
1201		Permissions perms = new Permissions();
1202	<	AdjustablePolicy() { }
1202	>	AdjustablePolicy(Permission... permissions) {
1203	>	for (Permission permission : permissions)
1204	>	perms.add(permission);
1205	>	}
1206		void addPermission(Permission perm) { perms.add(perm); }
1207		void clearPermissions() { perms = new Permissions(); }
1208	<	public PermissionCollection getPermissions(CodeSource cs) {
1209	<	return perms;
1210	<	}
1211	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1212	<	return perms;
1213	<	}
1214	<	public boolean implies(ProtectionDomain pd, Permission p) {
1215	<	return perms.implies(p);
1216	<	}
1217	<	public void refresh() {}
1208	>	public PermissionCollection getPermissions(CodeSource cs) {
1209	>	return perms;
1210	>	}
1211	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1212	>	return perms;
1213	>	}
1214	>	public boolean implies(ProtectionDomain pd, Permission p) {
1215	>	return perms.implies(p);
1216	>	}
1217	>	public void refresh() {}
1218	>	public String toString() {
1219	>	List<Permission> ps = new ArrayList<Permission>();
1220	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1221	>	ps.add(e.nextElement());
1222	>	return "AdjustablePolicy with permissions " + ps;
1223	>	}
1224		}
1225
1226	+	/**
1227	+	* Returns a policy containing all the permissions we ever need.
1228	+	*/
1229	+	public static Policy permissivePolicy() {
1230	+	return new AdjustablePolicy
1231	+	// Permissions j.u.c. needs directly
1232	+	(new RuntimePermission("modifyThread"),
1233	+	new RuntimePermission("getClassLoader"),
1234	+	new RuntimePermission("setContextClassLoader"),
1235	+	// Permissions needed to change permissions!
1236	+	new SecurityPermission("getPolicy"),
1237	+	new SecurityPermission("setPolicy"),
1238	+	new RuntimePermission("setSecurityManager"),
1239	+	// Permissions needed by the junit test harness
1240	+	new RuntimePermission("accessDeclaredMembers"),
1241	+	new PropertyPermission("*", "read"),
1242	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1243	+	}
1244
1245	<	// Some convenient Runnable classes
1245	>	/**
1246	>	* Sleeps until the given time has elapsed.
1247	>	* Throws AssertionFailedError if interrupted.
1248	>	*/
1249	>	static void sleep(long millis) {
1250	>	try {
1251	>	delay(millis);
1252	>	} catch (InterruptedException fail) {
1253	>	AssertionFailedError afe =
1254	>	new AssertionFailedError("Unexpected InterruptedException");
1255	>	afe.initCause(fail);
1256	>	throw afe;
1257	>	}
1258	>	}
1259
1260	<	static class NoOpRunnable implements Runnable {
1261	<	public void run() {}
1260	>	/**
1261	>	* Spin-waits up to the specified number of milliseconds for the given
1262	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1263	>	*/
1264	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1265	>	long startTime = 0L;
1266	>	for (;;) {
1267	>	Thread.State s = thread.getState();
1268	>	if (s == Thread.State.BLOCKED ||
1269	>	s == Thread.State.WAITING ||
1270	>	s == Thread.State.TIMED_WAITING)
1271	>	return;
1272	>	else if (s == Thread.State.TERMINATED)
1273	>	fail("Unexpected thread termination");
1274	>	else if (startTime == 0L)
1275	>	startTime = System.nanoTime();
1276	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1277	>	threadAssertTrue(thread.isAlive());
1278	>	return;
1279	>	}
1280	>	Thread.yield();
1281	>	}
1282		}
1283
1284	<	static class NoOpCallable implements Callable {
1285	<	public Object call() { return Boolean.TRUE; }
1284	>	/**
1285	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1286	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1287	>	*/
1288	>	void waitForThreadToEnterWaitState(Thread thread) {
1289	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1290		}
1291
1292	<	static final String TEST_STRING = "a test string";
1292	>	/**
1293	>	* Returns the number of milliseconds since time given by
1294	>	* startNanoTime, which must have been previously returned from a
1295	>	* call to {@link System#nanoTime()}.
1296	>	*/
1297	>	static long millisElapsedSince(long startNanoTime) {
1298	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1299	>	}
1300	>
1301	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1302	>	//         long startTime = System.nanoTime();
1303	>	//         try {
1304	>	//             r.run();
1305	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1306	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1307	>	//             throw new AssertionFailedError("did not return promptly");
1308	>	//     }
1309
1310	<	static class StringTask implements Callable<String> {
1311	<	public String call() { return TEST_STRING; }
1310	>	//     void assertTerminatesPromptly(Runnable r) {
1311	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1312	>	//     }
1313	>
1314	>	/**
1315	>	* Checks that timed f.get() returns the expected value, and does not
1316	>	* wait for the timeout to elapse before returning.
1317	>	*/
1318	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1319	>	long startTime = System.nanoTime();
1320	>	try {
1321	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1322	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1323	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1324	>	throw new AssertionFailedError("timed get did not return promptly");
1325		}
1326
1327	<	static class NPETask implements Callable<String> {
1328	<	public String call() { throw new NullPointerException(); }
1327	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1328	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1329		}
1330
1331	<	static class CallableOne implements Callable<Integer> {
1332	<	public Integer call() { return one; }
1331	>	/**
1332	>	* Returns a new started daemon Thread running the given runnable.
1333	>	*/
1334	>	Thread newStartedThread(Runnable runnable) {
1335	>	Thread t = new Thread(runnable);
1336	>	t.setDaemon(true);
1337	>	t.start();
1338	>	return t;
1339		}
1340
1341	<	class ShortRunnable implements Runnable {
1342	<	public void run() {
1343	<	try {
1344	<	Thread.sleep(SHORT_DELAY_MS);
1345	<	}
1346	<	catch (Exception e) {
1347	<	threadUnexpectedException(e);
1341	>	/**
1342	>	* Waits for the specified time (in milliseconds) for the thread
1343	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1344	>	* the thread (in the hope that it may terminate later) and fails.
1345	>	*/
1346	>	void awaitTermination(Thread t, long timeoutMillis) {
1347	>	try {
1348	>	t.join(timeoutMillis);
1349	>	} catch (InterruptedException fail) {
1350	>	threadUnexpectedException(fail);
1351	>	} finally {
1352	>	if (t.getState() != Thread.State.TERMINATED) {
1353	>	t.interrupt();
1354	>	threadFail("timed out waiting for thread to terminate");
1355		}
1356		}
1357		}
1358
1359	<	class ShortInterruptedRunnable implements Runnable {
1360	<	public void run() {
1359	>	/**
1360	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1361	>	* terminate (using {@link Thread#join(long)}), else interrupts
1362	>	* the thread (in the hope that it may terminate later) and fails.
1363	>	*/
1364	>	void awaitTermination(Thread t) {
1365	>	awaitTermination(t, LONG_DELAY_MS);
1366	>	}
1367	>
1368	>	// Some convenient Runnable classes
1369	>
1370	>	public abstract class CheckedRunnable implements Runnable {
1371	>	protected abstract void realRun() throws Throwable;
1372	>
1373	>	public final void run() {
1374		try {
1375	<	Thread.sleep(SHORT_DELAY_MS);
1376	<	threadShouldThrow();
1377	<	}
436	<	catch (InterruptedException success) {
1375	>	realRun();
1376	>	} catch (Throwable fail) {
1377	>	threadUnexpectedException(fail);
1378		}
1379		}
1380		}
1381
1382	<	class SmallRunnable implements Runnable {
1383	<	public void run() {
1382	>	public abstract class RunnableShouldThrow implements Runnable {
1383	>	protected abstract void realRun() throws Throwable;
1384	>
1385	>	final Class<?> exceptionClass;
1386	>
1387	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1388	>	this.exceptionClass = exceptionClass;
1389	>	}
1390	>
1391	>	public final void run() {
1392		try {
1393	<	Thread.sleep(SMALL_DELAY_MS);
1394	<	}
1395	<	catch (Exception e) {
1396	<	threadUnexpectedException(e);
1393	>	realRun();
1394	>	threadShouldThrow(exceptionClass.getSimpleName());
1395	>	} catch (Throwable t) {
1396	>	if (! exceptionClass.isInstance(t))
1397	>	threadUnexpectedException(t);
1398		}
1399		}
1400		}
1401
1402	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1403	<	public void run() {
1402	>	public abstract class ThreadShouldThrow extends Thread {
1403	>	protected abstract void realRun() throws Throwable;
1404	>
1405	>	final Class<?> exceptionClass;
1406	>
1407	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1408	>	this.exceptionClass = exceptionClass;
1409	>	}
1410	>
1411	>	public final void run() {
1412		try {
1413	<	Thread.sleep(SMALL_DELAY_MS);
1414	<	}
1415	<	catch (Exception e) {
1413	>	realRun();
1414	>	threadShouldThrow(exceptionClass.getSimpleName());
1415	>	} catch (Throwable t) {
1416	>	if (! exceptionClass.isInstance(t))
1417	>	threadUnexpectedException(t);
1418		}
1419		}
1420		}
1421
1422	<	class SmallCallable implements Callable {
1423	<	public Object call() {
1422	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1423	>	protected abstract void realRun() throws Throwable;
1424	>
1425	>	public final void run() {
1426		try {
1427	<	Thread.sleep(SMALL_DELAY_MS);
1427	>	realRun();
1428	>	threadShouldThrow("InterruptedException");
1429	>	} catch (InterruptedException success) {
1430	>	threadAssertFalse(Thread.interrupted());
1431	>	} catch (Throwable fail) {
1432	>	threadUnexpectedException(fail);
1433		}
467	–	catch (Exception e) {
468	–	threadUnexpectedException(e);
469	–	}
470	–	return Boolean.TRUE;
1434		}
1435		}
1436
1437	<	class SmallInterruptedRunnable implements Runnable {
1438	<	public void run() {
1437	>	public abstract class CheckedCallable<T> implements Callable<T> {
1438	>	protected abstract T realCall() throws Throwable;
1439	>
1440	>	public final T call() {
1441		try {
1442	<	Thread.sleep(SMALL_DELAY_MS);
1443	<	threadShouldThrow();
1444	<	}
1445	<	catch (InterruptedException success) {
1442	>	return realCall();
1443	>	} catch (Throwable fail) {
1444	>	threadUnexpectedException(fail);
1445	>	return null;
1446		}
1447		}
1448		}
1449
1450	+	public abstract class CheckedInterruptedCallable<T>
1451	+	implements Callable<T> {
1452	+	protected abstract T realCall() throws Throwable;
1453
1454	<	class MediumRunnable implements Runnable {
487	<	public void run() {
1454	>	public final T call() {
1455		try {
1456	<	Thread.sleep(MEDIUM_DELAY_MS);
1457	<	}
1458	<	catch (Exception e) {
1459	<	threadUnexpectedException(e);
1456	>	T result = realCall();
1457	>	threadShouldThrow("InterruptedException");
1458	>	return result;
1459	>	} catch (InterruptedException success) {
1460	>	threadAssertFalse(Thread.interrupted());
1461	>	} catch (Throwable fail) {
1462	>	threadUnexpectedException(fail);
1463		}
1464	+	return null;
1465		}
1466		}
1467
1468	<	class MediumInterruptedRunnable implements Runnable {
1469	<	public void run() {
1468	>	public static class NoOpRunnable implements Runnable {
1469	>	public void run() {}
1470	>	}
1471	>
1472	>	public static class NoOpCallable implements Callable {
1473	>	public Object call() { return Boolean.TRUE; }
1474	>	}
1475	>
1476	>	public static final String TEST_STRING = "a test string";
1477	>
1478	>	public static class StringTask implements Callable<String> {
1479	>	final String value;
1480	>	public StringTask() { this(TEST_STRING); }
1481	>	public StringTask(String value) { this.value = value; }
1482	>	public String call() { return value; }
1483	>	}
1484	>
1485	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1486	>	return new CheckedCallable<String>() {
1487	>	protected String realCall() {
1488	>	try {
1489	>	latch.await();
1490	>	} catch (InterruptedException quittingTime) {}
1491	>	return TEST_STRING;
1492	>	}};
1493	>	}
1494	>
1495	>	public Runnable countDowner(final CountDownLatch latch) {
1496	>	return new CheckedRunnable() {
1497	>	public void realRun() throws InterruptedException {
1498	>	latch.countDown();
1499	>	}};
1500	>	}
1501	>
1502	>	class LatchAwaiter extends CheckedRunnable {
1503	>	static final int NEW = 0;
1504	>	static final int RUNNING = 1;
1505	>	static final int DONE = 2;
1506	>	final CountDownLatch latch;
1507	>	int state = NEW;
1508	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1509	>	public void realRun() throws InterruptedException {
1510	>	state = 1;
1511	>	await(latch);
1512	>	state = 2;
1513	>	}
1514	>	}
1515	>
1516	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1517	>	return new LatchAwaiter(latch);
1518	>	}
1519	>
1520	>	public void await(CountDownLatch latch, long timeoutMillis) {
1521	>	try {
1522	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1523	>	fail("timed out waiting for CountDownLatch for "
1524	>	+ (timeoutMillis/1000) + " sec");
1525	>	} catch (Throwable fail) {
1526	>	threadUnexpectedException(fail);
1527	>	}
1528	>	}
1529	>
1530	>	public void await(CountDownLatch latch) {
1531	>	await(latch, LONG_DELAY_MS);
1532	>	}
1533	>
1534	>	public void await(Semaphore semaphore) {
1535	>	try {
1536	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1537	>	fail("timed out waiting for Semaphore for "
1538	>	+ (LONG_DELAY_MS/1000) + " sec");
1539	>	} catch (Throwable fail) {
1540	>	threadUnexpectedException(fail);
1541	>	}
1542	>	}
1543	>
1544	>	//     /**
1545	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1546	>	//      */
1547	>	//     public void await(AtomicBoolean flag) {
1548	>	//         await(flag, LONG_DELAY_MS);
1549	>	//     }
1550	>
1551	>	//     /**
1552	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1553	>	//      */
1554	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1555	>	//         long startTime = System.nanoTime();
1556	>	//         while (!flag.get()) {
1557	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1558	>	//                 throw new AssertionFailedError("timed out");
1559	>	//             Thread.yield();
1560	>	//         }
1561	>	//     }
1562	>
1563	>	public static class NPETask implements Callable<String> {
1564	>	public String call() { throw new NullPointerException(); }
1565	>	}
1566	>
1567	>	public static class CallableOne implements Callable<Integer> {
1568	>	public Integer call() { return one; }
1569	>	}
1570	>
1571	>	public class ShortRunnable extends CheckedRunnable {
1572	>	protected void realRun() throws Throwable {
1573	>	delay(SHORT_DELAY_MS);
1574	>	}
1575	>	}
1576	>
1577	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1578	>	protected void realRun() throws InterruptedException {
1579	>	delay(SHORT_DELAY_MS);
1580	>	}
1581	>	}
1582	>
1583	>	public class SmallRunnable extends CheckedRunnable {
1584	>	protected void realRun() throws Throwable {
1585	>	delay(SMALL_DELAY_MS);
1586	>	}
1587	>	}
1588	>
1589	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1590	>	protected void realRun() {
1591		try {
1592	<	Thread.sleep(MEDIUM_DELAY_MS);
1593	<	threadShouldThrow();
502	<	}
503	<	catch (InterruptedException success) {
504	<	}
1592	>	delay(SMALL_DELAY_MS);
1593	>	} catch (InterruptedException ok) {}
1594		}
1595		}
1596
1597	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1598	<	public void run() {
1597	>	public class SmallCallable extends CheckedCallable {
1598	>	protected Object realCall() throws InterruptedException {
1599	>	delay(SMALL_DELAY_MS);
1600	>	return Boolean.TRUE;
1601	>	}
1602	>	}
1603	>
1604	>	public class MediumRunnable extends CheckedRunnable {
1605	>	protected void realRun() throws Throwable {
1606	>	delay(MEDIUM_DELAY_MS);
1607	>	}
1608	>	}
1609	>
1610	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1611	>	protected void realRun() throws InterruptedException {
1612	>	delay(MEDIUM_DELAY_MS);
1613	>	}
1614	>	}
1615	>
1616	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1617	>	return new CheckedRunnable() {
1618	>	protected void realRun() {
1619	>	try {
1620	>	delay(timeoutMillis);
1621	>	} catch (InterruptedException ok) {}
1622	>	}};
1623	>	}
1624	>
1625	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1626	>	protected void realRun() {
1627		try {
1628	<	Thread.sleep(MEDIUM_DELAY_MS);
1629	<	}
513	<	catch (InterruptedException success) {
514	<	}
1628	>	delay(MEDIUM_DELAY_MS);
1629	>	} catch (InterruptedException ok) {}
1630		}
1631		}
1632
1633	<	class LongPossiblyInterruptedRunnable implements Runnable {
1634	<	public void run() {
1633	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1634	>	protected void realRun() {
1635		try {
1636	<	Thread.sleep(LONG_DELAY_MS);
1637	<	}
523	<	catch (InterruptedException success) {
524	<	}
1636	>	delay(LONG_DELAY_MS);
1637	>	} catch (InterruptedException ok) {}
1638		}
1639		}
1640
1641		/**
1642		* For use as ThreadFactory in constructors
1643		*/
1644	<	static class SimpleThreadFactory implements ThreadFactory {
1644	>	public static class SimpleThreadFactory implements ThreadFactory {
1645		public Thread newThread(Runnable r) {
1646		return new Thread(r);
1647		}
1648		}
1649
1650	<	static class TrackedShortRunnable implements Runnable {
1651	<	volatile boolean done = false;
1650	>	public interface TrackedRunnable extends Runnable {
1651	>	boolean isDone();
1652	>	}
1653	>
1654	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1655	>	return new TrackedRunnable() {
1656	>	private volatile boolean done = false;
1657	>	public boolean isDone() { return done; }
1658	>	public void run() {
1659	>	try {
1660	>	delay(timeoutMillis);
1661	>	done = true;
1662	>	} catch (InterruptedException ok) {}
1663	>	}
1664	>	};
1665	>	}
1666	>
1667	>	public static class TrackedShortRunnable implements Runnable {
1668	>	public volatile boolean done = false;
1669		public void run() {
1670		try {
1671	<	Thread.sleep(SMALL_DELAY_MS);
1671	>	delay(SHORT_DELAY_MS);
1672		done = true;
1673	<	} catch (Exception e) {
544	<	}
1673	>	} catch (InterruptedException ok) {}
1674		}
1675		}
1676
1677	<	static class TrackedMediumRunnable implements Runnable {
1678	<	volatile boolean done = false;
1677	>	public static class TrackedSmallRunnable implements Runnable {
1678	>	public volatile boolean done = false;
1679		public void run() {
1680		try {
1681	<	Thread.sleep(MEDIUM_DELAY_MS);
1681	>	delay(SMALL_DELAY_MS);
1682		done = true;
1683	<	} catch (Exception e) {
555	<	}
1683	>	} catch (InterruptedException ok) {}
1684		}
1685		}
1686
1687	<	static class TrackedLongRunnable implements Runnable {
1688	<	volatile boolean done = false;
1687	>	public static class TrackedMediumRunnable implements Runnable {
1688	>	public volatile boolean done = false;
1689		public void run() {
1690		try {
1691	<	Thread.sleep(LONG_DELAY_MS);
1691	>	delay(MEDIUM_DELAY_MS);
1692		done = true;
1693	<	} catch (Exception e) {
566	<	}
1693	>	} catch (InterruptedException ok) {}
1694		}
1695		}
1696
1697	<	static class TrackedNoOpRunnable implements Runnable {
1698	<	volatile boolean done = false;
1697	>	public static class TrackedLongRunnable implements Runnable {
1698	>	public volatile boolean done = false;
1699	>	public void run() {
1700	>	try {
1701	>	delay(LONG_DELAY_MS);
1702	>	done = true;
1703	>	} catch (InterruptedException ok) {}
1704	>	}
1705	>	}
1706	>
1707	>	public static class TrackedNoOpRunnable implements Runnable {
1708	>	public volatile boolean done = false;
1709		public void run() {
1710		done = true;
1711		}
1712		}
1713
1714	<	static class TrackedCallable implements Callable {
1715	<	volatile boolean done = false;
1714	>	public static class TrackedCallable implements Callable {
1715	>	public volatile boolean done = false;
1716		public Object call() {
1717		try {
1718	<	Thread.sleep(SMALL_DELAY_MS);
1718	>	delay(SMALL_DELAY_MS);
1719		done = true;
1720	<	} catch (Exception e) {
584	<	}
1720	>	} catch (InterruptedException ok) {}
1721		return Boolean.TRUE;
1722		}
1723		}
1724
1725	+	/**
1726	+	* Analog of CheckedRunnable for RecursiveAction
1727	+	*/
1728	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1729	+	protected abstract void realCompute() throws Throwable;
1730	+
1731	+	@Override protected final void compute() {
1732	+	try {
1733	+	realCompute();
1734	+	} catch (Throwable fail) {
1735	+	threadUnexpectedException(fail);
1736	+	}
1737	+	}
1738	+	}
1739	+
1740	+	/**
1741	+	* Analog of CheckedCallable for RecursiveTask
1742	+	*/
1743	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1744	+	protected abstract T realCompute() throws Throwable;
1745	+
1746	+	@Override protected final T compute() {
1747	+	try {
1748	+	return realCompute();
1749	+	} catch (Throwable fail) {
1750	+	threadUnexpectedException(fail);
1751	+	return null;
1752	+	}
1753	+	}
1754	+	}
1755
1756		/**
1757		* For use as RejectedExecutionHandler in constructors
1758		*/
1759	<	static class NoOpREHandler implements RejectedExecutionHandler {
1760	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1759	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1760	>	public void rejectedExecution(Runnable r,
1761	>	ThreadPoolExecutor executor) {}
1762		}
1763
1764	+	/**
1765	+	* A CyclicBarrier that uses timed await and fails with
1766	+	* AssertionFailedErrors instead of throwing checked exceptions.
1767	+	*/
1768	+	public static class CheckedBarrier extends CyclicBarrier {
1769	+	public CheckedBarrier(int parties) { super(parties); }
1770
1771	+	public int await() {
1772	+	try {
1773	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1774	+	} catch (TimeoutException timedOut) {
1775	+	throw new AssertionFailedError("timed out");
1776	+	} catch (Exception fail) {
1777	+	AssertionFailedError afe =
1778	+	new AssertionFailedError("Unexpected exception: " + fail);
1779	+	afe.initCause(fail);
1780	+	throw afe;
1781	+	}
1782	+	}
1783	+	}
1784	+
1785	+	void checkEmpty(BlockingQueue q) {
1786	+	try {
1787	+	assertTrue(q.isEmpty());
1788	+	assertEquals(0, q.size());
1789	+	assertNull(q.peek());
1790	+	assertNull(q.poll());
1791	+	assertNull(q.poll(0, MILLISECONDS));
1792	+	assertEquals(q.toString(), "[]");
1793	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1794	+	assertFalse(q.iterator().hasNext());
1795	+	try {
1796	+	q.element();
1797	+	shouldThrow();
1798	+	} catch (NoSuchElementException success) {}
1799	+	try {
1800	+	q.iterator().next();
1801	+	shouldThrow();
1802	+	} catch (NoSuchElementException success) {}
1803	+	try {
1804	+	q.remove();
1805	+	shouldThrow();
1806	+	} catch (NoSuchElementException success) {}
1807	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1808	+	}
1809	+
1810	+	void assertSerialEquals(Object x, Object y) {
1811	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1812	+	}
1813	+
1814	+	void assertNotSerialEquals(Object x, Object y) {
1815	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1816	+	}
1817	+
1818	+	byte[] serialBytes(Object o) {
1819	+	try {
1820	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1821	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1822	+	oos.writeObject(o);
1823	+	oos.flush();
1824	+	oos.close();
1825	+	return bos.toByteArray();
1826	+	} catch (Throwable fail) {
1827	+	threadUnexpectedException(fail);
1828	+	return new byte[0];
1829	+	}
1830	+	}
1831	+
1832	+	void assertImmutable(final Object o) {
1833	+	if (o instanceof Collection) {
1834	+	assertThrows(
1835	+	UnsupportedOperationException.class,
1836	+	new Runnable() { public void run() {
1837	+	((Collection) o).add(null);}});
1838	+	}
1839	+	}
1840	+
1841	+	@SuppressWarnings("unchecked")
1842	+	<T> T serialClone(T o) {
1843	+	try {
1844	+	ObjectInputStream ois = new ObjectInputStream
1845	+	(new ByteArrayInputStream(serialBytes(o)));
1846	+	T clone = (T) ois.readObject();
1847	+	if (o == clone) assertImmutable(o);
1848	+	assertSame(o.getClass(), clone.getClass());
1849	+	return clone;
1850	+	} catch (Throwable fail) {
1851	+	threadUnexpectedException(fail);
1852	+	return null;
1853	+	}
1854	+	}
1855	+
1856	+	/**
1857	+	* A version of serialClone that leaves error handling (for
1858	+	* e.g. NotSerializableException) up to the caller.
1859	+	*/
1860	+	@SuppressWarnings("unchecked")
1861	+	<T> T serialClonePossiblyFailing(T o)
1862	+	throws ReflectiveOperationException, java.io.IOException {
1863	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1864	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1865	+	oos.writeObject(o);
1866	+	oos.flush();
1867	+	oos.close();
1868	+	ObjectInputStream ois = new ObjectInputStream
1869	+	(new ByteArrayInputStream(bos.toByteArray()));
1870	+	T clone = (T) ois.readObject();
1871	+	if (o == clone) assertImmutable(o);
1872	+	assertSame(o.getClass(), clone.getClass());
1873	+	return clone;
1874	+	}
1875	+
1876	+	/**
1877	+	* If o implements Cloneable and has a public clone method,
1878	+	* returns a clone of o, else null.
1879	+	*/
1880	+	@SuppressWarnings("unchecked")
1881	+	<T> T cloneableClone(T o) {
1882	+	if (!(o instanceof Cloneable)) return null;
1883	+	final T clone;
1884	+	try {
1885	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1886	+	} catch (NoSuchMethodException ok) {
1887	+	return null;
1888	+	} catch (ReflectiveOperationException unexpected) {
1889	+	throw new Error(unexpected);
1890	+	}
1891	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1892	+	assertSame(o.getClass(), clone.getClass());
1893	+	return clone;
1894	+	}
1895	+
1896	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1897	+	Runnable... throwingActions) {
1898	+	for (Runnable throwingAction : throwingActions) {
1899	+	boolean threw = false;
1900	+	try { throwingAction.run(); }
1901	+	catch (Throwable t) {
1902	+	threw = true;
1903	+	if (!expectedExceptionClass.isInstance(t)) {
1904	+	AssertionFailedError afe =
1905	+	new AssertionFailedError
1906	+	("Expected " + expectedExceptionClass.getName() +
1907	+	", got " + t.getClass().getName());
1908	+	afe.initCause(t);
1909	+	threadUnexpectedException(afe);
1910	+	}
1911	+	}
1912	+	if (!threw)
1913	+	shouldThrow(expectedExceptionClass.getName());
1914	+	}
1915	+	}
1916	+
1917	+	public void assertIteratorExhausted(Iterator<?> it) {
1918	+	try {
1919	+	it.next();
1920	+	shouldThrow();
1921	+	} catch (NoSuchElementException success) {}
1922	+	assertFalse(it.hasNext());
1923	+	}
1924	+
1925	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1926	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1927	+	}
1928	+
1929	+	public Runnable runnableThrowing(final RuntimeException ex) {
1930	+	return new Runnable() { public void run() { throw ex; }};
1931	+	}
1932	+
1933	+	/** A reusable thread pool to be shared by tests. */
1934	+	static final ExecutorService cachedThreadPool =
1935	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1936	+	1000L, MILLISECONDS,
1937	+	new SynchronousQueue<Runnable>());
1938	+
1939	+	static <T> void shuffle(T[] array) {
1940	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1941	+	}
1942		}

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