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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.33 by jsr166, Fri Jul 31 23:37:31 2009 UTC vs.
Revision 1.189 by jsr166, Fri Mar 4 21:00:45 2016 UTC

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

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