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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.15 by dl, Mon Dec 29 19:05:40 2003 UTC vs.
Revision 1.174 by jsr166, Fri Oct 9 19:09:59 2015 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
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
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	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.MINUTES;
11	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
12	>
13	>	import java.io.ByteArrayInputStream;
14	>	import java.io.ByteArrayOutputStream;
15	>	import java.io.ObjectInputStream;
16	>	import java.io.ObjectOutputStream;
17	>	import java.lang.management.ManagementFactory;
18	>	import java.lang.management.ThreadInfo;
19	>	import java.lang.management.ThreadMXBean;
20	>	import java.lang.reflect.Constructor;
21	>	import java.lang.reflect.Method;
22	>	import java.lang.reflect.Modifier;
23	>	import java.nio.file.Files;
24	>	import java.nio.file.Paths;
25	>	import java.security.CodeSource;
26	>	import java.security.Permission;
27	>	import java.security.PermissionCollection;
28	>	import java.security.Permissions;
29	>	import java.security.Policy;
30	>	import java.security.ProtectionDomain;
31	>	import java.security.SecurityPermission;
32	>	import java.util.ArrayList;
33	>	import java.util.Arrays;
34	>	import java.util.Date;
35	>	import java.util.Enumeration;
36	>	import java.util.Iterator;
37	>	import java.util.List;
38	>	import java.util.NoSuchElementException;
39	>	import java.util.PropertyPermission;
40	>	import java.util.concurrent.BlockingQueue;
41	>	import java.util.concurrent.Callable;
42	>	import java.util.concurrent.CountDownLatch;
43	>	import java.util.concurrent.CyclicBarrier;
44	>	import java.util.concurrent.ExecutionException;
45	>	import java.util.concurrent.Executors;
46	>	import java.util.concurrent.ExecutorService;
47	>	import java.util.concurrent.ForkJoinPool;
48	>	import java.util.concurrent.Future;
49	>	import java.util.concurrent.RecursiveAction;
50	>	import java.util.concurrent.RecursiveTask;
51	>	import java.util.concurrent.RejectedExecutionHandler;
52	>	import java.util.concurrent.Semaphore;
53	>	import java.util.concurrent.ThreadFactory;
54	>	import java.util.concurrent.ThreadPoolExecutor;
55	>	import java.util.concurrent.TimeoutException;
56	>	import java.util.concurrent.atomic.AtomicReference;
57	>	import java.util.regex.Matcher;
58	>	import java.util.regex.Pattern;
59	>
60	>	import junit.framework.AssertionFailedError;
61	>	import junit.framework.Test;
62	>	import junit.framework.TestCase;
63	>	import junit.framework.TestResult;
64	>	import junit.framework.TestSuite;
65
66		/**
67		* Base class for JSR166 Junit TCK tests.  Defines some constants,
68		* utility methods and classes, as well as a simple framework for
69		* helping to make sure that assertions failing in generated threads
70		* cause the associated test that generated them to itself fail (which
71	<	* JUnit doe not otherwise arrange).  The rules for creating such
71	>	* JUnit does not otherwise arrange).  The rules for creating such
72		* tests are:
73		*
74		* <ol>
75		*
76	<	* <li> All assertions in code running in generated threads must use
77	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
78	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
79	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
76	>	* <li>All assertions in code running in generated threads must use
77	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
78	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
79	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
80		* particularly recommended) for other code to use these forms too.
81		* Only the most typically used JUnit assertion methods are defined
82	<	* this way, but enough to live with.</li>
82	>	* this way, but enough to live with.
83		*
84	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
85	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
84	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
85	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
86		* them. These methods are used to clear and check for thread
87	<	* assertion failures.</li>
87	>	* assertion failures.
88		*
89	<	* <li>All delays and timeouts must use one of the constants <tt>
90	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
91	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
89	>	* <li>All delays and timeouts must use one of the constants {@code
90	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
91	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
92		* discriminable from zero time, and always allows enough time for the
93		* small amounts of computation (creating a thread, calling a few
94		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
95		* is always discriminable as larger than SHORT and smaller than
96		* MEDIUM.  And so on. These constants are set to conservative values,
97		* but even so, if there is ever any doubt, they can all be increased
98	<	* in one spot to rerun tests on slower platforms</li>
98	>	* in one spot to rerun tests on slower platforms.
99		*
100	<	* <li> All threads generated must be joined inside each test case
101	<	* method (or <tt>fail</tt> to do so) before returning from the
102	<	* method. The <tt> joinPool</tt> method can be used to do this when
103	<	* using Executors.</li>
100	>	* <li>All threads generated must be joined inside each test case
101	>	* method (or {@code fail} to do so) before returning from the
102	>	* method. The {@code joinPool} method can be used to do this when
103	>	* using Executors.
104		*
105		* </ol>
106		*
107	<	* <p> <b>Other notes</b>
107	>	* <p><b>Other notes</b>
108		* <ul>
109		*
110	<	* <li> Usually, there is one testcase method per JSR166 method
110	>	* <li>Usually, there is one testcase method per JSR166 method
111		* covering "normal" operation, and then as many exception-testing
112		* methods as there are exceptions the method can throw. Sometimes
113		* there are multiple tests per JSR166 method when the different
114		* "normal" behaviors differ significantly. And sometimes testcases
115		* cover multiple methods when they cannot be tested in
116	<	* isolation.</li>
117	<	*
118	<	* <li> The documentation style for testcases is to provide as javadoc
116	>	* isolation.
117	>	*
118	>	* <li>The documentation style for testcases is to provide as javadoc
119		* a simple sentence or two describing the property that the testcase
120		* method purports to test. The javadocs do not say anything about how
121	<	* the property is tested. To find out, read the code.</li>
121	>	* the property is tested. To find out, read the code.
122		*
123	<	* <li> These tests are "conformance tests", and do not attempt to
123	>	* <li>These tests are "conformance tests", and do not attempt to
124		* test throughput, latency, scalability or other performance factors
125		* (see the separate "jtreg" tests for a set intended to check these
126		* for the most central aspects of functionality.) So, most tests use
127		* the smallest sensible numbers of threads, collection sizes, etc
128	<	* needed to check basic conformance.</li>
128	>	* needed to check basic conformance.
129		*
130		* <li>The test classes currently do not declare inclusion in
131		* any particular package to simplify things for people integrating
132	<	* them in TCK test suites.</li>
132	>	* them in TCK test suites.
133		*
134	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
135	<	* runs all JSR166 unit tests.</li>
134	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
135	>	* runs all JSR166 unit tests.
136		*
137		* </ul>
138		*/
139		public class JSR166TestCase extends TestCase {
140	+	private static final boolean useSecurityManager =
141	+	Boolean.getBoolean("jsr166.useSecurityManager");
142	+
143	+	protected static final boolean expensiveTests =
144	+	Boolean.getBoolean("jsr166.expensiveTests");
145	+
146	+	/**
147	+	* If true, also run tests that are not part of the official tck
148	+	* because they test unspecified implementation details.
149	+	*/
150	+	protected static final boolean testImplementationDetails =
151	+	Boolean.getBoolean("jsr166.testImplementationDetails");
152	+
153	+	/**
154	+	* If true, report on stdout all "slow" tests, that is, ones that
155	+	* take more than profileThreshold milliseconds to execute.
156	+	*/
157	+	private static final boolean profileTests =
158	+	Boolean.getBoolean("jsr166.profileTests");
159	+
160	+	/**
161	+	* The number of milliseconds that tests are permitted for
162	+	* execution without being reported, when profileTests is set.
163	+	*/
164	+	private static final long profileThreshold =
165	+	Long.getLong("jsr166.profileThreshold", 100);
166	+
167	+	/**
168	+	* The number of repetitions per test (for tickling rare bugs).
169	+	*/
170	+	private static final int runsPerTest =
171	+	Integer.getInteger("jsr166.runsPerTest", 1);
172	+
173	+	/**
174	+	* The number of repetitions of the test suite (for finding leaks?).
175	+	*/
176	+	private static final int suiteRuns =
177	+	Integer.getInteger("jsr166.suiteRuns", 1);
178	+
179	+	public JSR166TestCase() { super(); }
180	+	public JSR166TestCase(String name) { super(name); }
181	+
182	+	/**
183	+	* A filter for tests to run, matching strings of the form
184	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
185	+	* Usefully combined with jsr166.runsPerTest.
186	+	*/
187	+	private static final Pattern methodFilter = methodFilter();
188	+
189	+	private static Pattern methodFilter() {
190	+	String regex = System.getProperty("jsr166.methodFilter");
191	+	return (regex == null) ? null : Pattern.compile(regex);
192	+	}
193	+
194	+	// Instrumentation to debug very rare, but very annoying hung test runs.
195	+	static volatile TestCase currentTestCase;
196	+	// static volatile int currentRun = 0;
197	+	static {
198	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
199	+	// Avoid spurious reports with enormous runsPerTest.
200	+	// A single test case run should never take more than 1 second.
201	+	// But let's cap it at the high end too ...
202	+	final int timeoutMinutes =
203	+	Math.min(15, Math.max(runsPerTest / 60, 1));
204	+	for (TestCase lastTestCase = currentTestCase;;) {
205	+	try { MINUTES.sleep(timeoutMinutes); }
206	+	catch (InterruptedException unexpected) { break; }
207	+	if (lastTestCase == currentTestCase) {
208	+	System.err.printf(
209	+	"Looks like we're stuck running test: %s%n",
210	+	lastTestCase);
211	+	//                     System.err.printf(
212	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
213	+	//                         lastTestCase, currentRun, runsPerTest);
214	+	System.err.println("availableProcessors=" +
215	+	Runtime.getRuntime().availableProcessors());
216	+	System.err.printf("cpu model = %s%n", cpuModel());
217	+	dumpTestThreads();
218	+	// one stack dump is probably enough; more would be spam
219	+	break;
220	+	}
221	+	lastTestCase = currentTestCase;
222	+	}}};
223	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
224	+	thread.setDaemon(true);
225	+	thread.start();
226	+	}
227	+
228	+	public static String cpuModel() {
229	+	try {
230	+	Matcher matcher = Pattern.compile("model name\\s*: (.*)")
231	+	.matcher(new String(
232	+	Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
233	+	matcher.find();
234	+	return matcher.group(1);
235	+	} catch (Exception ex) { return null; }
236	+	}
237	+
238	+	public void runBare() throws Throwable {
239	+	currentTestCase = this;
240	+	if (methodFilter == null
241	+	|| methodFilter.matcher(toString()).find())
242	+	super.runBare();
243	+	}
244	+
245	+	protected void runTest() throws Throwable {
246	+	for (int i = 0; i < runsPerTest; i++) {
247	+	// currentRun = i;
248	+	if (profileTests)
249	+	runTestProfiled();
250	+	else
251	+	super.runTest();
252	+	}
253	+	}
254	+
255	+	protected void runTestProfiled() throws Throwable {
256	+	for (int i = 0; i < 2; i++) {
257	+	long startTime = System.nanoTime();
258	+	super.runTest();
259	+	long elapsedMillis = millisElapsedSince(startTime);
260	+	if (elapsedMillis < profileThreshold)
261	+	break;
262	+	// Never report first run of any test; treat it as a
263	+	// warmup run, notably to trigger all needed classloading,
264	+	if (i > 0)
265	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
266	+	}
267	+	}
268	+
269		/**
270	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
271	<	*/
272	<	public static void main (String[] args) {
273	<	junit.textui.TestRunner.run (suite());
270	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
271	>	*/
272	>	public static void main(String[] args) {
273	>	main(suite(), args);
274	>	}
275	>
276	>	/**
277	>	* Runs all unit tests in the given test suite.
278	>	* Actual behavior influenced by jsr166.* system properties.
279	>	*/
280	>	static void main(Test suite, String[] args) {
281	>	if (useSecurityManager) {
282	>	System.err.println("Setting a permissive security manager");
283	>	Policy.setPolicy(permissivePolicy());
284	>	System.setSecurityManager(new SecurityManager());
285	>	}
286	>	for (int i = 0; i < suiteRuns; i++) {
287	>	TestResult result = junit.textui.TestRunner.run(suite);
288	>	if (!result.wasSuccessful())
289	>	System.exit(1);
290	>	System.gc();
291	>	System.runFinalization();
292	>	}
293	>	}
294	>
295	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
296	>	TestSuite suite = new TestSuite();
297	>	for (Object suiteOrClass : suiteOrClasses) {
298	>	if (suiteOrClass instanceof TestSuite)
299	>	suite.addTest((TestSuite) suiteOrClass);
300	>	else if (suiteOrClass instanceof Class)
301	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
302	>	else
303	>	throw new ClassCastException("not a test suite or class");
304	>	}
305	>	return suite;
306	>	}
307	>
308	>	public static void addNamedTestClasses(TestSuite suite,
309	>	String... testClassNames) {
310	>	for (String testClassName : testClassNames) {
311	>	try {
312	>	Class<?> testClass = Class.forName(testClassName);
313	>	Method m = testClass.getDeclaredMethod("suite",
314	>	new Class<?>[0]);
315	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
316	>	} catch (Exception e) {
317	>	throw new Error("Missing test class", e);
318	>	}
319	>	}
320	>	}
321	>
322	>	public static final double JAVA_CLASS_VERSION;
323	>	public static final String JAVA_SPECIFICATION_VERSION;
324	>	static {
325	>	try {
326	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
327	>	new java.security.PrivilegedAction<Double>() {
328	>	public Double run() {
329	>	return Double.valueOf(System.getProperty("java.class.version"));}});
330	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
331	>	new java.security.PrivilegedAction<String>() {
332	>	public String run() {
333	>	return System.getProperty("java.specification.version");}});
334	>	} catch (Throwable t) {
335	>	throw new Error(t);
336	>	}
337	>	}
338	>
339	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
340	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
341	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
342	>	public static boolean atLeastJava9() {
343	>	return JAVA_CLASS_VERSION >= 53.0
344	>	// As of 2015-09, java9 still uses 52.0 class file version
345	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
346	>	}
347	>	public static boolean atLeastJava10() {
348	>	return JAVA_CLASS_VERSION >= 54.0
349	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
350		}
351
352		/**
353	<	* Collects all JSR166 unit tests as one suite
354	<	*/
355	<	public static Test suite ( ) {
356	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
357	<
358	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
359	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
360	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
361	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
362	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
363	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
364	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
365	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
366	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
367	<	suite.addTest(new TestSuite(AtomicLongTest.class));
368	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
369	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
370	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
371	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
372	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
373	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
374	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
375	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
376	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
377	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
378	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
379	<	suite.addTest(new TestSuite(DelayQueueTest.class));
380	<	suite.addTest(new TestSuite(ExchangerTest.class));
381	<	suite.addTest(new TestSuite(ExecutorsTest.class));
382	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
383	<	suite.addTest(new TestSuite(FutureTaskTest.class));
384	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
385	<	suite.addTest(new TestSuite(LinkedListTest.class));
386	<	suite.addTest(new TestSuite(LockSupportTest.class));
387	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
388	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
389	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
390	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
391	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
392	<	suite.addTest(new TestSuite(SemaphoreTest.class));
393	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
394	<	suite.addTest(new TestSuite(SystemTest.class));
395	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
396	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
397	<	suite.addTest(new TestSuite(ThreadTest.class));
398	<	suite.addTest(new TestSuite(TimeUnitTest.class));
399	<
353	>	* Collects all JSR166 unit tests as one suite.
354	>	*/
355	>	public static Test suite() {
356	>	// Java7+ test classes
357	>	TestSuite suite = newTestSuite(
358	>	ForkJoinPoolTest.suite(),
359	>	ForkJoinTaskTest.suite(),
360	>	RecursiveActionTest.suite(),
361	>	RecursiveTaskTest.suite(),
362	>	LinkedTransferQueueTest.suite(),
363	>	PhaserTest.suite(),
364	>	ThreadLocalRandomTest.suite(),
365	>	AbstractExecutorServiceTest.suite(),
366	>	AbstractQueueTest.suite(),
367	>	AbstractQueuedSynchronizerTest.suite(),
368	>	AbstractQueuedLongSynchronizerTest.suite(),
369	>	ArrayBlockingQueueTest.suite(),
370	>	ArrayDequeTest.suite(),
371	>	AtomicBooleanTest.suite(),
372	>	AtomicIntegerArrayTest.suite(),
373	>	AtomicIntegerFieldUpdaterTest.suite(),
374	>	AtomicIntegerTest.suite(),
375	>	AtomicLongArrayTest.suite(),
376	>	AtomicLongFieldUpdaterTest.suite(),
377	>	AtomicLongTest.suite(),
378	>	AtomicMarkableReferenceTest.suite(),
379	>	AtomicReferenceArrayTest.suite(),
380	>	AtomicReferenceFieldUpdaterTest.suite(),
381	>	AtomicReferenceTest.suite(),
382	>	AtomicStampedReferenceTest.suite(),
383	>	ConcurrentHashMapTest.suite(),
384	>	ConcurrentLinkedDequeTest.suite(),
385	>	ConcurrentLinkedQueueTest.suite(),
386	>	ConcurrentSkipListMapTest.suite(),
387	>	ConcurrentSkipListSubMapTest.suite(),
388	>	ConcurrentSkipListSetTest.suite(),
389	>	ConcurrentSkipListSubSetTest.suite(),
390	>	CopyOnWriteArrayListTest.suite(),
391	>	CopyOnWriteArraySetTest.suite(),
392	>	CountDownLatchTest.suite(),
393	>	CyclicBarrierTest.suite(),
394	>	DelayQueueTest.suite(),
395	>	EntryTest.suite(),
396	>	ExchangerTest.suite(),
397	>	ExecutorsTest.suite(),
398	>	ExecutorCompletionServiceTest.suite(),
399	>	FutureTaskTest.suite(),
400	>	LinkedBlockingDequeTest.suite(),
401	>	LinkedBlockingQueueTest.suite(),
402	>	LinkedListTest.suite(),
403	>	LockSupportTest.suite(),
404	>	PriorityBlockingQueueTest.suite(),
405	>	PriorityQueueTest.suite(),
406	>	ReentrantLockTest.suite(),
407	>	ReentrantReadWriteLockTest.suite(),
408	>	ScheduledExecutorTest.suite(),
409	>	ScheduledExecutorSubclassTest.suite(),
410	>	SemaphoreTest.suite(),
411	>	SynchronousQueueTest.suite(),
412	>	SystemTest.suite(),
413	>	ThreadLocalTest.suite(),
414	>	ThreadPoolExecutorTest.suite(),
415	>	ThreadPoolExecutorSubclassTest.suite(),
416	>	ThreadTest.suite(),
417	>	TimeUnitTest.suite(),
418	>	TreeMapTest.suite(),
419	>	TreeSetTest.suite(),
420	>	TreeSubMapTest.suite(),
421	>	TreeSubSetTest.suite());
422	>
423	>	// Java8+ test classes
424	>	if (atLeastJava8()) {
425	>	String[] java8TestClassNames = {
426	>	"Atomic8Test",
427	>	"CompletableFutureTest",
428	>	"ConcurrentHashMap8Test",
429	>	"CountedCompleterTest",
430	>	"DoubleAccumulatorTest",
431	>	"DoubleAdderTest",
432	>	"ForkJoinPool8Test",
433	>	"ForkJoinTask8Test",
434	>	"LongAccumulatorTest",
435	>	"LongAdderTest",
436	>	"SplittableRandomTest",
437	>	"StampedLockTest",
438	>	"SubmissionPublisherTest",
439	>	"ThreadLocalRandom8Test",
440	>	};
441	>	addNamedTestClasses(suite, java8TestClassNames);
442	>	}
443	>
444	>	// Java9+ test classes
445	>	if (atLeastJava9()) {
446	>	String[] java9TestClassNames = {
447	>	// Currently empty, but expecting varhandle tests
448	>	};
449	>	addNamedTestClasses(suite, java9TestClassNames);
450	>	}
451	>
452		return suite;
453		}
454
455	+	/** Returns list of junit-style test method names in given class. */
456	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
457	+	Method[] methods = testClass.getDeclaredMethods();
458	+	ArrayList<String> names = new ArrayList<String>(methods.length);
459	+	for (Method method : methods) {
460	+	if (method.getName().startsWith("test")
461	+	&& Modifier.isPublic(method.getModifiers())
462	+	// method.getParameterCount() requires jdk8+
463	+	&& method.getParameterTypes().length == 0) {
464	+	names.add(method.getName());
465	+	}
466	+	}
467	+	return names;
468	+	}
469	+
470	+	/**
471	+	* Returns junit-style testSuite for the given test class, but
472	+	* parameterized by passing extra data to each test.
473	+	*/
474	+	public static <ExtraData> Test parameterizedTestSuite
475	+	(Class<? extends JSR166TestCase> testClass,
476	+	Class<ExtraData> dataClass,
477	+	ExtraData data) {
478	+	try {
479	+	TestSuite suite = new TestSuite();
480	+	Constructor c =
481	+	testClass.getDeclaredConstructor(dataClass, String.class);
482	+	for (String methodName : testMethodNames(testClass))
483	+	suite.addTest((Test) c.newInstance(data, methodName));
484	+	return suite;
485	+	} catch (Exception e) {
486	+	throw new Error(e);
487	+	}
488	+	}
489	+
490	+	/**
491	+	* Returns junit-style testSuite for the jdk8 extension of the
492	+	* given test class, but parameterized by passing extra data to
493	+	* each test.  Uses reflection to allow compilation in jdk7.
494	+	*/
495	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
496	+	(Class<? extends JSR166TestCase> testClass,
497	+	Class<ExtraData> dataClass,
498	+	ExtraData data) {
499	+	if (atLeastJava8()) {
500	+	String name = testClass.getName();
501	+	String name8 = name.replaceAll("Test$", "8Test");
502	+	if (name.equals(name8)) throw new Error(name);
503	+	try {
504	+	return (Test)
505	+	Class.forName(name8)
506	+	.getMethod("testSuite", new Class[] { dataClass })
507	+	.invoke(null, data);
508	+	} catch (Exception e) {
509	+	throw new Error(e);
510	+	}
511	+	} else {
512	+	return new TestSuite();
513	+	}
514	+	}
515	+
516	+	// Delays for timing-dependent tests, in milliseconds.
517
518		public static long SHORT_DELAY_MS;
519		public static long SMALL_DELAY_MS;
520		public static long MEDIUM_DELAY_MS;
521		public static long LONG_DELAY_MS;
522
153	–
523		/**
524	<	* Return the shortest timed delay. This could
524	>	* Returns the shortest timed delay. This could
525		* be reimplemented to use for example a Property.
526	<	*/
526	>	*/
527		protected long getShortDelay() {
528	<	return 100;
528	>	return 50;
529		}
530
162	–
531		/**
532	<	* Set delays as multiples of SHORT_DELAY.
532	>	* Sets delays as multiples of SHORT_DELAY.
533		*/
534	<	protected  void setDelays() {
534	>	protected void setDelays() {
535		SHORT_DELAY_MS = getShortDelay();
536	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
536	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
537		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
538	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
538	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
539		}
540
541		/**
542	<	* Flag set true if any threadAssert methods fail
542	>	* Returns a timeout in milliseconds to be used in tests that
543	>	* verify that operations block or time out.
544		*/
545	<	volatile boolean threadFailed;
545	>	long timeoutMillis() {
546	>	return SHORT_DELAY_MS / 4;
547	>	}
548
549		/**
550	<	* Initialize test to indicate that no thread assertions have failed
550	>	* Returns a new Date instance representing a time at least
551	>	* delayMillis milliseconds in the future.
552		*/
553	<	public void setUp() {
553	>	Date delayedDate(long delayMillis) {
554	>	// Add 1 because currentTimeMillis is known to round into the past.
555	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
556	>	}
557	>
558	>	/**
559	>	* The first exception encountered if any threadAssertXXX method fails.
560	>	*/
561	>	private final AtomicReference<Throwable> threadFailure
562	>	= new AtomicReference<Throwable>(null);
563	>
564	>	/**
565	>	* Records an exception so that it can be rethrown later in the test
566	>	* harness thread, triggering a test case failure.  Only the first
567	>	* failure is recorded; subsequent calls to this method from within
568	>	* the same test have no effect.
569	>	*/
570	>	public void threadRecordFailure(Throwable t) {
571	>	System.err.println(t);
572	>	dumpTestThreads();
573	>	threadFailure.compareAndSet(null, t);
574	>	}
575	>
576	>	public void setUp() {
577		setDelays();
578	<	threadFailed = false;
578	>	}
579	>
580	>	void tearDownFail(String format, Object... args) {
581	>	String msg = toString() + ": " + String.format(format, args);
582	>	System.err.println(msg);
583	>	dumpTestThreads();
584	>	throw new AssertionFailedError(msg);
585	>	}
586	>
587	>	/**
588	>	* Extra checks that get done for all test cases.
589	>	*
590	>	* Triggers test case failure if any thread assertions have failed,
591	>	* by rethrowing, in the test harness thread, any exception recorded
592	>	* earlier by threadRecordFailure.
593	>	*
594	>	* Triggers test case failure if interrupt status is set in the main thread.
595	>	*/
596	>	public void tearDown() throws Exception {
597	>	Throwable t = threadFailure.getAndSet(null);
598	>	if (t != null) {
599	>	if (t instanceof Error)
600	>	throw (Error) t;
601	>	else if (t instanceof RuntimeException)
602	>	throw (RuntimeException) t;
603	>	else if (t instanceof Exception)
604	>	throw (Exception) t;
605	>	else {
606	>	AssertionFailedError afe =
607	>	new AssertionFailedError(t.toString());
608	>	afe.initCause(t);
609	>	throw afe;
610	>	}
611	>	}
612	>
613	>	if (Thread.interrupted())
614	>	tearDownFail("interrupt status set in main thread");
615	>
616	>	checkForkJoinPoolThreadLeaks();
617		}
618
619		/**
620	<	* Trigger test case failure if any thread assertions have failed
620	>	* Finds missing PoolCleaners
621		*/
622	<	public void tearDown() {
623	<	assertFalse(threadFailed);
622	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
623	>	Thread[] survivors = new Thread[7];
624	>	int count = Thread.enumerate(survivors);
625	>	for (int i = 0; i < count; i++) {
626	>	Thread thread = survivors[i];
627	>	String name = thread.getName();
628	>	if (name.startsWith("ForkJoinPool-")) {
629	>	// give thread some time to terminate
630	>	thread.join(LONG_DELAY_MS);
631	>	if (thread.isAlive())
632	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
633	>	thread);
634	>	}
635	>	}
636	>
637	>	if (!ForkJoinPool.commonPool()
638	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
639	>	tearDownFail("ForkJoin common pool thread stuck");
640		}
641
642		/**
643	<	* Fail, also setting status to indicate current testcase should fail
644	<	*/
643	>	* Just like fail(reason), but additionally recording (using
644	>	* threadRecordFailure) any AssertionFailedError thrown, so that
645	>	* the current testcase will fail.
646	>	*/
647		public void threadFail(String reason) {
648	<	threadFailed = true;
649	<	fail(reason);
648	>	try {
649	>	fail(reason);
650	>	} catch (AssertionFailedError t) {
651	>	threadRecordFailure(t);
652	>	throw t;
653	>	}
654		}
655
656		/**
657	<	* If expression not true, set status to indicate current testcase
658	<	* should fail
659	<	*/
657	>	* Just like assertTrue(b), but additionally recording (using
658	>	* threadRecordFailure) any AssertionFailedError thrown, so that
659	>	* the current testcase will fail.
660	>	*/
661		public void threadAssertTrue(boolean b) {
662	<	if (!b) {
207	<	threadFailed = true;
662	>	try {
663		assertTrue(b);
664	+	} catch (AssertionFailedError t) {
665	+	threadRecordFailure(t);
666	+	throw t;
667		}
668		}
669
670		/**
671	<	* If expression not false, set status to indicate current testcase
672	<	* should fail
673	<	*/
671	>	* Just like assertFalse(b), but additionally recording (using
672	>	* threadRecordFailure) any AssertionFailedError thrown, so that
673	>	* the current testcase will fail.
674	>	*/
675		public void threadAssertFalse(boolean b) {
676	<	if (b) {
218	<	threadFailed = true;
676	>	try {
677		assertFalse(b);
678	+	} catch (AssertionFailedError t) {
679	+	threadRecordFailure(t);
680	+	throw t;
681		}
682		}
683
684		/**
685	<	* If argument not null, set status to indicate current testcase
686	<	* should fail
687	<	*/
685	>	* Just like assertNull(x), but additionally recording (using
686	>	* threadRecordFailure) any AssertionFailedError thrown, so that
687	>	* the current testcase will fail.
688	>	*/
689		public void threadAssertNull(Object x) {
690	<	if (x != null) {
229	<	threadFailed = true;
690	>	try {
691		assertNull(x);
692	+	} catch (AssertionFailedError t) {
693	+	threadRecordFailure(t);
694	+	throw t;
695		}
696		}
697
698		/**
699	<	* If arguments not equal, set status to indicate current testcase
700	<	* should fail
701	<	*/
699	>	* Just like assertEquals(x, y), but additionally recording (using
700	>	* threadRecordFailure) any AssertionFailedError thrown, so that
701	>	* the current testcase will fail.
702	>	*/
703		public void threadAssertEquals(long x, long y) {
704	<	if (x != y) {
240	<	threadFailed = true;
704	>	try {
705		assertEquals(x, y);
706	+	} catch (AssertionFailedError t) {
707	+	threadRecordFailure(t);
708	+	throw t;
709		}
710		}
711
712		/**
713	<	* If arguments not equal, set status to indicate current testcase
714	<	* should fail
715	<	*/
713	>	* Just like assertEquals(x, y), but additionally recording (using
714	>	* threadRecordFailure) any AssertionFailedError thrown, so that
715	>	* the current testcase will fail.
716	>	*/
717		public void threadAssertEquals(Object x, Object y) {
718	<	if (x != y && (x == null || !x.equals(y))) {
251	<	threadFailed = true;
718	>	try {
719		assertEquals(x, y);
720	+	} catch (AssertionFailedError fail) {
721	+	threadRecordFailure(fail);
722	+	throw fail;
723	+	} catch (Throwable fail) {
724	+	threadUnexpectedException(fail);
725	+	}
726	+	}
727	+
728	+	/**
729	+	* Just like assertSame(x, y), but additionally recording (using
730	+	* threadRecordFailure) any AssertionFailedError thrown, so that
731	+	* the current testcase will fail.
732	+	*/
733	+	public void threadAssertSame(Object x, Object y) {
734	+	try {
735	+	assertSame(x, y);
736	+	} catch (AssertionFailedError fail) {
737	+	threadRecordFailure(fail);
738	+	throw fail;
739		}
740		}
741
742		/**
743	<	* threadFail with message "should throw exception"
744	<	*/
743	>	* Calls threadFail with message "should throw exception".
744	>	*/
745		public void threadShouldThrow() {
746	<	threadFailed = true;
747	<	fail("should throw exception");
746	>	threadFail("should throw exception");
747	>	}
748	>
749	>	/**
750	>	* Calls threadFail with message "should throw" + exceptionName.
751	>	*/
752	>	public void threadShouldThrow(String exceptionName) {
753	>	threadFail("should throw " + exceptionName);
754	>	}
755	>
756	>	/**
757	>	* Records the given exception using {@link #threadRecordFailure},
758	>	* then rethrows the exception, wrapping it in an
759	>	* AssertionFailedError if necessary.
760	>	*/
761	>	public void threadUnexpectedException(Throwable t) {
762	>	threadRecordFailure(t);
763	>	t.printStackTrace();
764	>	if (t instanceof RuntimeException)
765	>	throw (RuntimeException) t;
766	>	else if (t instanceof Error)
767	>	throw (Error) t;
768	>	else {
769	>	AssertionFailedError afe =
770	>	new AssertionFailedError("unexpected exception: " + t);
771	>	afe.initCause(t);
772	>	throw afe;
773	>	}
774	>	}
775	>
776	>	/**
777	>	* Delays, via Thread.sleep, for the given millisecond delay, but
778	>	* if the sleep is shorter than specified, may re-sleep or yield
779	>	* until time elapses.  Ensures that the given time, as measured
780	>	* by System.nanoTime(), has elapsed.
781	>	*/
782	>	static void delay(long millis) throws InterruptedException {
783	>	long nanos = millis * (1000 * 1000);
784	>	final long wakeupTime = System.nanoTime() + nanos;
785	>	do {
786	>	if (millis > 0L)
787	>	Thread.sleep(millis);
788	>	else // too short to sleep
789	>	Thread.yield();
790	>	nanos = wakeupTime - System.nanoTime();
791	>	millis = nanos / (1000 * 1000);
792	>	} while (nanos >= 0L);
793	>	}
794	>
795	>	/**
796	>	* Allows use of try-with-resources with per-test thread pools.
797	>	*/
798	>	class PoolCleaner implements AutoCloseable {
799	>	private final ExecutorService pool;
800	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
801	>	public void close() { joinPool(pool); }
802	>	}
803	>
804	>	/**
805	>	* An extension of PoolCleaner that has an action to release the pool.
806	>	*/
807	>	class PoolCleanerWithReleaser extends PoolCleaner {
808	>	private final Runnable releaser;
809	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
810	>	super(pool);
811	>	this.releaser = releaser;
812	>	}
813	>	public void close() {
814	>	try {
815	>	releaser.run();
816	>	} finally {
817	>	super.close();
818	>	}
819	>	}
820	>	}
821	>
822	>	PoolCleaner cleaner(ExecutorService pool) {
823	>	return new PoolCleaner(pool);
824	>	}
825	>
826	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
827	>	return new PoolCleanerWithReleaser(pool, releaser);
828	>	}
829	>
830	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
831	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
832	>	}
833	>
834	>	Runnable releaser(final CountDownLatch latch) {
835	>	return new Runnable() { public void run() {
836	>	do { latch.countDown(); }
837	>	while (latch.getCount() > 0);
838	>	}};
839		}
840
841		/**
842	<	* threadFail with message "Unexpected exception"
842	>	* Waits out termination of a thread pool or fails doing so.
843		*/
844	<	public void threadUnexpectedException() {
845	<	threadFailed = true;
846	<	fail("Unexpected exception");
844	>	void joinPool(ExecutorService pool) {
845	>	try {
846	>	pool.shutdown();
847	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
848	>	try {
849	>	threadFail("ExecutorService " + pool +
850	>	" did not terminate in a timely manner");
851	>	} finally {
852	>	// last resort, for the benefit of subsequent tests
853	>	pool.shutdownNow();
854	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
855	>	}
856	>	}
857	>	} catch (SecurityException ok) {
858	>	// Allowed in case test doesn't have privs
859	>	} catch (InterruptedException fail) {
860	>	threadFail("Unexpected InterruptedException");
861	>	}
862	>	}
863	>
864	>	/** Like Runnable, but with the freedom to throw anything */
865	>	interface Action { public void run() throws Throwable; }
866	>
867	>	/**
868	>	* Runs all the given actions in parallel, failing if any fail.
869	>	* Useful for running multiple variants of tests that are
870	>	* necessarily individually slow because they must block.
871	>	*/
872	>	void testInParallel(Action ... actions) {
873	>	ExecutorService pool = Executors.newCachedThreadPool();
874	>	try (PoolCleaner cleaner = cleaner(pool)) {
875	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
876	>	for (final Action action : actions)
877	>	futures.add(pool.submit(new CheckedRunnable() {
878	>	public void realRun() throws Throwable { action.run();}}));
879	>	for (Future<?> future : futures)
880	>	try {
881	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
882	>	} catch (ExecutionException ex) {
883	>	threadUnexpectedException(ex.getCause());
884	>	} catch (Exception ex) {
885	>	threadUnexpectedException(ex);
886	>	}
887	>	}
888	>	}
889	>
890	>	/**
891	>	* A debugging tool to print stack traces of most threads, as jstack does.
892	>	* Uninteresting threads are filtered out.
893	>	*/
894	>	static void dumpTestThreads() {
895	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
896	>	System.err.println("------ stacktrace dump start ------");
897	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
898	>	String name = info.getThreadName();
899	>	if ("Signal Dispatcher".equals(name))
900	>	continue;
901	>	if ("Reference Handler".equals(name)
902	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
903	>	continue;
904	>	if ("Finalizer".equals(name)
905	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
906	>	continue;
907	>	if ("checkForWedgedTest".equals(name))
908	>	continue;
909	>	System.err.print(info);
910	>	}
911	>	System.err.println("------ stacktrace dump end ------");
912	>	}
913	>
914	>	/**
915	>	* Checks that thread does not terminate within the default
916	>	* millisecond delay of {@code timeoutMillis()}.
917	>	*/
918	>	void assertThreadStaysAlive(Thread thread) {
919	>	assertThreadStaysAlive(thread, timeoutMillis());
920	>	}
921	>
922	>	/**
923	>	* Checks that thread does not terminate within the given millisecond delay.
924	>	*/
925	>	void assertThreadStaysAlive(Thread thread, long millis) {
926	>	try {
927	>	// No need to optimize the failing case via Thread.join.
928	>	delay(millis);
929	>	assertTrue(thread.isAlive());
930	>	} catch (InterruptedException fail) {
931	>	threadFail("Unexpected InterruptedException");
932	>	}
933		}
934
935	+	/**
936	+	* Checks that the threads do not terminate within the default
937	+	* millisecond delay of {@code timeoutMillis()}.
938	+	*/
939	+	void assertThreadsStayAlive(Thread... threads) {
940	+	assertThreadsStayAlive(timeoutMillis(), threads);
941	+	}
942
943		/**
944	<	* Wait out termination of a thread pool or fail doing so
944	>	* Checks that the threads do not terminate within the given millisecond delay.
945		*/
946	<	public void joinPool(ExecutorService exec) {
946	>	void assertThreadsStayAlive(long millis, Thread... threads) {
947		try {
948	<	exec.shutdown();
949	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
950	<	} catch(InterruptedException ie) {
951	<	fail("Unexpected exception");
948	>	// No need to optimize the failing case via Thread.join.
949	>	delay(millis);
950	>	for (Thread thread : threads)
951	>	assertTrue(thread.isAlive());
952	>	} catch (InterruptedException fail) {
953	>	threadFail("Unexpected InterruptedException");
954		}
955		}
956
957	+	/**
958	+	* Checks that future.get times out, with the default timeout of
959	+	* {@code timeoutMillis()}.
960	+	*/
961	+	void assertFutureTimesOut(Future future) {
962	+	assertFutureTimesOut(future, timeoutMillis());
963	+	}
964
965		/**
966	<	* fail with message "should throw exception"
967	<	*/
966	>	* Checks that future.get times out, with the given millisecond timeout.
967	>	*/
968	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
969	>	long startTime = System.nanoTime();
970	>	try {
971	>	future.get(timeoutMillis, MILLISECONDS);
972	>	shouldThrow();
973	>	} catch (TimeoutException success) {
974	>	} catch (Exception fail) {
975	>	threadUnexpectedException(fail);
976	>	} finally { future.cancel(true); }
977	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
978	>	}
979	>
980	>	/**
981	>	* Fails with message "should throw exception".
982	>	*/
983		public void shouldThrow() {
984		fail("Should throw exception");
985		}
986
987		/**
988	<	* fail with message "Unexpected exception"
988	>	* Fails with message "should throw " + exceptionName.
989		*/
990	<	public void unexpectedException() {
991	<	fail("Unexpected exception");
990	>	public void shouldThrow(String exceptionName) {
991	>	fail("Should throw " + exceptionName);
992		}
993
300	–
994		/**
995		* The number of elements to place in collections, arrays, etc.
996		*/
997	<	static final int SIZE = 20;
997	>	public static final int SIZE = 20;
998
999		// Some convenient Integer constants
1000
1001	<	static final Integer zero = new Integer(0);
1002	<	static final Integer one = new Integer(1);
1003	<	static final Integer two = new Integer(2);
1004	<	static final Integer three  = new Integer(3);
1005	<	static final Integer four  = new Integer(4);
1006	<	static final Integer five  = new Integer(5);
1007	<	static final Integer six = new Integer(6);
1008	<	static final Integer seven = new Integer(7);
1009	<	static final Integer eight = new Integer(8);
1010	<	static final Integer nine = new Integer(9);
1011	<	static final Integer m1  = new Integer(-1);
1012	<	static final Integer m2  = new Integer(-2);
1013	<	static final Integer m3  = new Integer(-3);
1014	<	static final Integer m4 = new Integer(-4);
1015	<	static final Integer m5 = new Integer(-5);
1016	<	static final Integer m10 = new Integer(-10);
1001	>	public static final Integer zero  = new Integer(0);
1002	>	public static final Integer one   = new Integer(1);
1003	>	public static final Integer two   = new Integer(2);
1004	>	public static final Integer three = new Integer(3);
1005	>	public static final Integer four  = new Integer(4);
1006	>	public static final Integer five  = new Integer(5);
1007	>	public static final Integer six   = new Integer(6);
1008	>	public static final Integer seven = new Integer(7);
1009	>	public static final Integer eight = new Integer(8);
1010	>	public static final Integer nine  = new Integer(9);
1011	>	public static final Integer m1  = new Integer(-1);
1012	>	public static final Integer m2  = new Integer(-2);
1013	>	public static final Integer m3  = new Integer(-3);
1014	>	public static final Integer m4  = new Integer(-4);
1015	>	public static final Integer m5  = new Integer(-5);
1016	>	public static final Integer m6  = new Integer(-6);
1017	>	public static final Integer m10 = new Integer(-10);
1018	>
1019	>	/**
1020	>	* Runs Runnable r with a security policy that permits precisely
1021	>	* the specified permissions.  If there is no current security
1022	>	* manager, the runnable is run twice, both with and without a
1023	>	* security manager.  We require that any security manager permit
1024	>	* getPolicy/setPolicy.
1025	>	*/
1026	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1027	>	SecurityManager sm = System.getSecurityManager();
1028	>	if (sm == null) {
1029	>	r.run();
1030	>	}
1031	>	runWithSecurityManagerWithPermissions(r, permissions);
1032	>	}
1033	>
1034	>	/**
1035	>	* Runs Runnable r with a security policy that permits precisely
1036	>	* the specified permissions.  If there is no current security
1037	>	* manager, a temporary one is set for the duration of the
1038	>	* Runnable.  We require that any security manager permit
1039	>	* getPolicy/setPolicy.
1040	>	*/
1041	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1042	>	Permission... permissions) {
1043	>	SecurityManager sm = System.getSecurityManager();
1044	>	if (sm == null) {
1045	>	Policy savedPolicy = Policy.getPolicy();
1046	>	try {
1047	>	Policy.setPolicy(permissivePolicy());
1048	>	System.setSecurityManager(new SecurityManager());
1049	>	runWithSecurityManagerWithPermissions(r, permissions);
1050	>	} finally {
1051	>	System.setSecurityManager(null);
1052	>	Policy.setPolicy(savedPolicy);
1053	>	}
1054	>	} else {
1055	>	Policy savedPolicy = Policy.getPolicy();
1056	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1057	>	Policy.setPolicy(policy);
1058
1059	+	try {
1060	+	r.run();
1061	+	} finally {
1062	+	policy.addPermission(new SecurityPermission("setPolicy"));
1063	+	Policy.setPolicy(savedPolicy);
1064	+	}
1065	+	}
1066	+	}
1067	+
1068	+	/**
1069	+	* Runs a runnable without any permissions.
1070	+	*/
1071	+	public void runWithoutPermissions(Runnable r) {
1072	+	runWithPermissions(r);
1073	+	}
1074
1075		/**
1076		* A security policy where new permissions can be dynamically added
1077		* or all cleared.
1078		*/
1079	<	static class AdjustablePolicy extends java.security.Policy {
1079	>	public static class AdjustablePolicy extends java.security.Policy {
1080		Permissions perms = new Permissions();
1081	<	AdjustablePolicy() { }
1081	>	AdjustablePolicy(Permission... permissions) {
1082	>	for (Permission permission : permissions)
1083	>	perms.add(permission);
1084	>	}
1085		void addPermission(Permission perm) { perms.add(perm); }
1086		void clearPermissions() { perms = new Permissions(); }
1087	<	public PermissionCollection getPermissions(CodeSource cs) {
1088	<	return perms;
1089	<	}
1090	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1091	<	return perms;
1092	<	}
1093	<	public boolean implies(ProtectionDomain pd, Permission p) {
1094	<	return perms.implies(p);
1095	<	}
1096	<	public void refresh() {}
1087	>	public PermissionCollection getPermissions(CodeSource cs) {
1088	>	return perms;
1089	>	}
1090	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1091	>	return perms;
1092	>	}
1093	>	public boolean implies(ProtectionDomain pd, Permission p) {
1094	>	return perms.implies(p);
1095	>	}
1096	>	public void refresh() {}
1097	>	public String toString() {
1098	>	List<Permission> ps = new ArrayList<Permission>();
1099	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1100	>	ps.add(e.nextElement());
1101	>	return "AdjustablePolicy with permissions " + ps;
1102	>	}
1103		}
1104
1105	+	/**
1106	+	* Returns a policy containing all the permissions we ever need.
1107	+	*/
1108	+	public static Policy permissivePolicy() {
1109	+	return new AdjustablePolicy
1110	+	// Permissions j.u.c. needs directly
1111	+	(new RuntimePermission("modifyThread"),
1112	+	new RuntimePermission("getClassLoader"),
1113	+	new RuntimePermission("setContextClassLoader"),
1114	+	// Permissions needed to change permissions!
1115	+	new SecurityPermission("getPolicy"),
1116	+	new SecurityPermission("setPolicy"),
1117	+	new RuntimePermission("setSecurityManager"),
1118	+	// Permissions needed by the junit test harness
1119	+	new RuntimePermission("accessDeclaredMembers"),
1120	+	new PropertyPermission("*", "read"),
1121	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1122	+	}
1123
1124	<	// Some convenient Runnable classes
1124	>	/**
1125	>	* Sleeps until the given time has elapsed.
1126	>	* Throws AssertionFailedError if interrupted.
1127	>	*/
1128	>	void sleep(long millis) {
1129	>	try {
1130	>	delay(millis);
1131	>	} catch (InterruptedException fail) {
1132	>	AssertionFailedError afe =
1133	>	new AssertionFailedError("Unexpected InterruptedException");
1134	>	afe.initCause(fail);
1135	>	throw afe;
1136	>	}
1137	>	}
1138
1139	<	static class NoOpRunnable implements Runnable {
1140	<	public void run() {}
1139	>	/**
1140	>	* Spin-waits up to the specified number of milliseconds for the given
1141	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1142	>	*/
1143	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1144	>	long startTime = System.nanoTime();
1145	>	for (;;) {
1146	>	Thread.State s = thread.getState();
1147	>	if (s == Thread.State.BLOCKED ||
1148	>	s == Thread.State.WAITING ||
1149	>	s == Thread.State.TIMED_WAITING)
1150	>	return;
1151	>	else if (s == Thread.State.TERMINATED)
1152	>	fail("Unexpected thread termination");
1153	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1154	>	threadAssertTrue(thread.isAlive());
1155	>	return;
1156	>	}
1157	>	Thread.yield();
1158	>	}
1159		}
1160
1161	<	static class NoOpCallable implements Callable {
1162	<	public Object call() { return Boolean.TRUE; }
1161	>	/**
1162	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1163	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1164	>	*/
1165	>	void waitForThreadToEnterWaitState(Thread thread) {
1166	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1167		}
1168
1169	<	static final String TEST_STRING = "a test string";
1169	>	/**
1170	>	* Returns the number of milliseconds since time given by
1171	>	* startNanoTime, which must have been previously returned from a
1172	>	* call to {@link System#nanoTime()}.
1173	>	*/
1174	>	static long millisElapsedSince(long startNanoTime) {
1175	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1176	>	}
1177
1178	<	static class StringTask implements Callable<String> {
1179	<	public String call() { return TEST_STRING; }
1178	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1179	>	//         long startTime = System.nanoTime();
1180	>	//         try {
1181	>	//             r.run();
1182	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1183	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1184	>	//             throw new AssertionFailedError("did not return promptly");
1185	>	//     }
1186	>
1187	>	//     void assertTerminatesPromptly(Runnable r) {
1188	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1189	>	//     }
1190	>
1191	>	/**
1192	>	* Checks that timed f.get() returns the expected value, and does not
1193	>	* wait for the timeout to elapse before returning.
1194	>	*/
1195	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1196	>	long startTime = System.nanoTime();
1197	>	try {
1198	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1199	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1200	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1201	>	throw new AssertionFailedError("timed get did not return promptly");
1202		}
1203
1204	<	static class NPETask implements Callable<String> {
1205	<	public String call() { throw new NullPointerException(); }
1204	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1205	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1206		}
1207
1208	<	static class CallableOne implements Callable<Integer> {
1209	<	public Integer call() { return one; }
1208	>	/**
1209	>	* Returns a new started daemon Thread running the given runnable.
1210	>	*/
1211	>	Thread newStartedThread(Runnable runnable) {
1212	>	Thread t = new Thread(runnable);
1213	>	t.setDaemon(true);
1214	>	t.start();
1215	>	return t;
1216		}
1217
1218	<	class ShortRunnable implements Runnable {
1219	<	public void run() {
1220	<	try {
1221	<	Thread.sleep(SHORT_DELAY_MS);
1222	<	}
1223	<	catch(Exception e) {
1224	<	threadUnexpectedException();
1218	>	/**
1219	>	* Waits for the specified time (in milliseconds) for the thread
1220	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1221	>	* the thread (in the hope that it may terminate later) and fails.
1222	>	*/
1223	>	void awaitTermination(Thread t, long timeoutMillis) {
1224	>	try {
1225	>	t.join(timeoutMillis);
1226	>	} catch (InterruptedException fail) {
1227	>	threadUnexpectedException(fail);
1228	>	} finally {
1229	>	if (t.getState() != Thread.State.TERMINATED) {
1230	>	t.interrupt();
1231	>	threadFail("Test timed out");
1232		}
1233		}
1234		}
1235
1236	<	class ShortInterruptedRunnable implements Runnable {
1237	<	public void run() {
1236	>	/**
1237	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1238	>	* terminate (using {@link Thread#join(long)}), else interrupts
1239	>	* the thread (in the hope that it may terminate later) and fails.
1240	>	*/
1241	>	void awaitTermination(Thread t) {
1242	>	awaitTermination(t, LONG_DELAY_MS);
1243	>	}
1244	>
1245	>	// Some convenient Runnable classes
1246	>
1247	>	public abstract class CheckedRunnable implements Runnable {
1248	>	protected abstract void realRun() throws Throwable;
1249	>
1250	>	public final void run() {
1251		try {
1252	<	Thread.sleep(SHORT_DELAY_MS);
1253	<	threadShouldThrow();
1254	<	}
389	<	catch(InterruptedException success) {
1252	>	realRun();
1253	>	} catch (Throwable fail) {
1254	>	threadUnexpectedException(fail);
1255		}
1256		}
1257		}
1258
1259	<	class SmallRunnable implements Runnable {
1260	<	public void run() {
1259	>	public abstract class RunnableShouldThrow implements Runnable {
1260	>	protected abstract void realRun() throws Throwable;
1261	>
1262	>	final Class<?> exceptionClass;
1263	>
1264	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1265	>	this.exceptionClass = exceptionClass;
1266	>	}
1267	>
1268	>	public final void run() {
1269		try {
1270	<	Thread.sleep(SMALL_DELAY_MS);
1271	<	}
1272	<	catch(Exception e) {
1273	<	threadUnexpectedException();
1270	>	realRun();
1271	>	threadShouldThrow(exceptionClass.getSimpleName());
1272	>	} catch (Throwable t) {
1273	>	if (! exceptionClass.isInstance(t))
1274	>	threadUnexpectedException(t);
1275		}
1276		}
1277		}
1278
1279	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1280	<	public void run() {
1279	>	public abstract class ThreadShouldThrow extends Thread {
1280	>	protected abstract void realRun() throws Throwable;
1281	>
1282	>	final Class<?> exceptionClass;
1283	>
1284	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1285	>	this.exceptionClass = exceptionClass;
1286	>	}
1287	>
1288	>	public final void run() {
1289		try {
1290	<	Thread.sleep(SMALL_DELAY_MS);
1291	<	}
1292	<	catch(Exception e) {
1290	>	realRun();
1291	>	threadShouldThrow(exceptionClass.getSimpleName());
1292	>	} catch (Throwable t) {
1293	>	if (! exceptionClass.isInstance(t))
1294	>	threadUnexpectedException(t);
1295		}
1296		}
1297		}
1298
1299	<	class SmallCallable implements Callable {
1300	<	public Object call() {
1299	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1300	>	protected abstract void realRun() throws Throwable;
1301	>
1302	>	public final void run() {
1303		try {
1304	<	Thread.sleep(SMALL_DELAY_MS);
1304	>	realRun();
1305	>	threadShouldThrow("InterruptedException");
1306	>	} catch (InterruptedException success) {
1307	>	threadAssertFalse(Thread.interrupted());
1308	>	} catch (Throwable fail) {
1309	>	threadUnexpectedException(fail);
1310		}
420	–	catch(Exception e) {
421	–	threadUnexpectedException();
422	–	}
423	–	return Boolean.TRUE;
1311		}
1312		}
1313
1314	<	class SmallInterruptedRunnable implements Runnable {
1315	<	public void run() {
1314	>	public abstract class CheckedCallable<T> implements Callable<T> {
1315	>	protected abstract T realCall() throws Throwable;
1316	>
1317	>	public final T call() {
1318		try {
1319	<	Thread.sleep(SMALL_DELAY_MS);
1320	<	threadShouldThrow();
1321	<	}
1322	<	catch(InterruptedException success) {
1319	>	return realCall();
1320	>	} catch (Throwable fail) {
1321	>	threadUnexpectedException(fail);
1322	>	return null;
1323		}
1324		}
1325		}
1326
1327	+	public abstract class CheckedInterruptedCallable<T>
1328	+	implements Callable<T> {
1329	+	protected abstract T realCall() throws Throwable;
1330
1331	<	class MediumRunnable implements Runnable {
440	<	public void run() {
1331	>	public final T call() {
1332		try {
1333	<	Thread.sleep(MEDIUM_DELAY_MS);
1334	<	}
1335	<	catch(Exception e) {
1336	<	threadUnexpectedException();
1333	>	T result = realCall();
1334	>	threadShouldThrow("InterruptedException");
1335	>	return result;
1336	>	} catch (InterruptedException success) {
1337	>	threadAssertFalse(Thread.interrupted());
1338	>	} catch (Throwable fail) {
1339	>	threadUnexpectedException(fail);
1340		}
1341	+	return null;
1342		}
1343		}
1344
1345	<	class MediumInterruptedRunnable implements Runnable {
1346	<	public void run() {
1345	>	public static class NoOpRunnable implements Runnable {
1346	>	public void run() {}
1347	>	}
1348	>
1349	>	public static class NoOpCallable implements Callable {
1350	>	public Object call() { return Boolean.TRUE; }
1351	>	}
1352	>
1353	>	public static final String TEST_STRING = "a test string";
1354	>
1355	>	public static class StringTask implements Callable<String> {
1356	>	final String value;
1357	>	public StringTask() { this(TEST_STRING); }
1358	>	public StringTask(String value) { this.value = value; }
1359	>	public String call() { return value; }
1360	>	}
1361	>
1362	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1363	>	return new CheckedCallable<String>() {
1364	>	protected String realCall() {
1365	>	try {
1366	>	latch.await();
1367	>	} catch (InterruptedException quittingTime) {}
1368	>	return TEST_STRING;
1369	>	}};
1370	>	}
1371	>
1372	>	public Runnable countDowner(final CountDownLatch latch) {
1373	>	return new CheckedRunnable() {
1374	>	public void realRun() throws InterruptedException {
1375	>	latch.countDown();
1376	>	}};
1377	>	}
1378	>
1379	>	class LatchAwaiter extends CheckedRunnable {
1380	>	static final int NEW = 0;
1381	>	static final int RUNNING = 1;
1382	>	static final int DONE = 2;
1383	>	final CountDownLatch latch;
1384	>	int state = NEW;
1385	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1386	>	public void realRun() throws InterruptedException {
1387	>	state = 1;
1388	>	await(latch);
1389	>	state = 2;
1390	>	}
1391	>	}
1392	>
1393	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1394	>	return new LatchAwaiter(latch);
1395	>	}
1396	>
1397	>	public void await(CountDownLatch latch) {
1398	>	try {
1399	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1400	>	} catch (Throwable fail) {
1401	>	threadUnexpectedException(fail);
1402	>	}
1403	>	}
1404	>
1405	>	public void await(Semaphore semaphore) {
1406	>	try {
1407	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1408	>	} catch (Throwable fail) {
1409	>	threadUnexpectedException(fail);
1410	>	}
1411	>	}
1412	>
1413	>	//     /**
1414	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1415	>	//      */
1416	>	//     public void await(AtomicBoolean flag) {
1417	>	//         await(flag, LONG_DELAY_MS);
1418	>	//     }
1419	>
1420	>	//     /**
1421	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1422	>	//      */
1423	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1424	>	//         long startTime = System.nanoTime();
1425	>	//         while (!flag.get()) {
1426	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1427	>	//                 throw new AssertionFailedError("timed out");
1428	>	//             Thread.yield();
1429	>	//         }
1430	>	//     }
1431	>
1432	>	public static class NPETask implements Callable<String> {
1433	>	public String call() { throw new NullPointerException(); }
1434	>	}
1435	>
1436	>	public static class CallableOne implements Callable<Integer> {
1437	>	public Integer call() { return one; }
1438	>	}
1439	>
1440	>	public class ShortRunnable extends CheckedRunnable {
1441	>	protected void realRun() throws Throwable {
1442	>	delay(SHORT_DELAY_MS);
1443	>	}
1444	>	}
1445	>
1446	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1447	>	protected void realRun() throws InterruptedException {
1448	>	delay(SHORT_DELAY_MS);
1449	>	}
1450	>	}
1451	>
1452	>	public class SmallRunnable extends CheckedRunnable {
1453	>	protected void realRun() throws Throwable {
1454	>	delay(SMALL_DELAY_MS);
1455	>	}
1456	>	}
1457	>
1458	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1459	>	protected void realRun() {
1460		try {
1461	<	Thread.sleep(MEDIUM_DELAY_MS);
1462	<	threadShouldThrow();
455	<	}
456	<	catch(InterruptedException success) {
457	<	}
1461	>	delay(SMALL_DELAY_MS);
1462	>	} catch (InterruptedException ok) {}
1463		}
1464		}
1465
1466	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1467	<	public void run() {
1466	>	public class SmallCallable extends CheckedCallable {
1467	>	protected Object realCall() throws InterruptedException {
1468	>	delay(SMALL_DELAY_MS);
1469	>	return Boolean.TRUE;
1470	>	}
1471	>	}
1472	>
1473	>	public class MediumRunnable extends CheckedRunnable {
1474	>	protected void realRun() throws Throwable {
1475	>	delay(MEDIUM_DELAY_MS);
1476	>	}
1477	>	}
1478	>
1479	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1480	>	protected void realRun() throws InterruptedException {
1481	>	delay(MEDIUM_DELAY_MS);
1482	>	}
1483	>	}
1484	>
1485	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1486	>	return new CheckedRunnable() {
1487	>	protected void realRun() {
1488	>	try {
1489	>	delay(timeoutMillis);
1490	>	} catch (InterruptedException ok) {}
1491	>	}};
1492	>	}
1493	>
1494	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1495	>	protected void realRun() {
1496		try {
1497	<	Thread.sleep(MEDIUM_DELAY_MS);
1498	<	}
466	<	catch(InterruptedException success) {
467	<	}
1497	>	delay(MEDIUM_DELAY_MS);
1498	>	} catch (InterruptedException ok) {}
1499		}
1500		}
1501
1502	<	class LongPossiblyInterruptedRunnable implements Runnable {
1503	<	public void run() {
1502	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1503	>	protected void realRun() {
1504		try {
1505	<	Thread.sleep(LONG_DELAY_MS);
1506	<	}
476	<	catch(InterruptedException success) {
477	<	}
1505	>	delay(LONG_DELAY_MS);
1506	>	} catch (InterruptedException ok) {}
1507		}
1508		}
1509
1510		/**
1511		* For use as ThreadFactory in constructors
1512		*/
1513	<	static class SimpleThreadFactory implements ThreadFactory{
1514	<	public Thread newThread(Runnable r){
1513	>	public static class SimpleThreadFactory implements ThreadFactory {
1514	>	public Thread newThread(Runnable r) {
1515		return new Thread(r);
1516	<	}
1516	>	}
1517		}
1518
1519	<	static class TrackedShortRunnable implements Runnable {
1520	<	volatile boolean done = false;
1519	>	public interface TrackedRunnable extends Runnable {
1520	>	boolean isDone();
1521	>	}
1522	>
1523	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1524	>	return new TrackedRunnable() {
1525	>	private volatile boolean done = false;
1526	>	public boolean isDone() { return done; }
1527	>	public void run() {
1528	>	try {
1529	>	delay(timeoutMillis);
1530	>	done = true;
1531	>	} catch (InterruptedException ok) {}
1532	>	}
1533	>	};
1534	>	}
1535	>
1536	>	public static class TrackedShortRunnable implements Runnable {
1537	>	public volatile boolean done = false;
1538		public void run() {
1539		try {
1540	<	Thread.sleep(SMALL_DELAY_MS);
1540	>	delay(SHORT_DELAY_MS);
1541		done = true;
1542	<	} catch(Exception e){
497	<	}
1542	>	} catch (InterruptedException ok) {}
1543		}
1544		}
1545
1546	<	static class TrackedMediumRunnable implements Runnable {
1547	<	volatile boolean done = false;
1546	>	public static class TrackedSmallRunnable implements Runnable {
1547	>	public volatile boolean done = false;
1548		public void run() {
1549		try {
1550	<	Thread.sleep(MEDIUM_DELAY_MS);
1550	>	delay(SMALL_DELAY_MS);
1551		done = true;
1552	<	} catch(Exception e){
508	<	}
1552	>	} catch (InterruptedException ok) {}
1553		}
1554		}
1555
1556	<	static class TrackedLongRunnable implements Runnable {
1557	<	volatile boolean done = false;
1556	>	public static class TrackedMediumRunnable implements Runnable {
1557	>	public volatile boolean done = false;
1558		public void run() {
1559		try {
1560	<	Thread.sleep(LONG_DELAY_MS);
1560	>	delay(MEDIUM_DELAY_MS);
1561		done = true;
1562	<	} catch(Exception e){
1563	<	}
1562	>	} catch (InterruptedException ok) {}
1563	>	}
1564	>	}
1565	>
1566	>	public static class TrackedLongRunnable implements Runnable {
1567	>	public volatile boolean done = false;
1568	>	public void run() {
1569	>	try {
1570	>	delay(LONG_DELAY_MS);
1571	>	done = true;
1572	>	} catch (InterruptedException ok) {}
1573		}
1574		}
1575
1576	<	static class TrackedNoOpRunnable implements Runnable {
1577	<	volatile boolean done = false;
1576	>	public static class TrackedNoOpRunnable implements Runnable {
1577	>	public volatile boolean done = false;
1578		public void run() {
1579		done = true;
1580		}
1581		}
1582
1583	<	static class TrackedCallable implements Callable {
1584	<	volatile boolean done = false;
1583	>	public static class TrackedCallable implements Callable {
1584	>	public volatile boolean done = false;
1585		public Object call() {
1586		try {
1587	<	Thread.sleep(SMALL_DELAY_MS);
1587	>	delay(SMALL_DELAY_MS);
1588		done = true;
1589	<	} catch(Exception e){
537	<	}
1589	>	} catch (InterruptedException ok) {}
1590		return Boolean.TRUE;
1591		}
1592		}
1593
1594	+	/**
1595	+	* Analog of CheckedRunnable for RecursiveAction
1596	+	*/
1597	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1598	+	protected abstract void realCompute() throws Throwable;
1599	+
1600	+	@Override protected final void compute() {
1601	+	try {
1602	+	realCompute();
1603	+	} catch (Throwable fail) {
1604	+	threadUnexpectedException(fail);
1605	+	}
1606	+	}
1607	+	}
1608	+
1609	+	/**
1610	+	* Analog of CheckedCallable for RecursiveTask
1611	+	*/
1612	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1613	+	protected abstract T realCompute() throws Throwable;
1614	+
1615	+	@Override protected final T compute() {
1616	+	try {
1617	+	return realCompute();
1618	+	} catch (Throwable fail) {
1619	+	threadUnexpectedException(fail);
1620	+	return null;
1621	+	}
1622	+	}
1623	+	}
1624
1625		/**
1626		* For use as RejectedExecutionHandler in constructors
1627		*/
1628	<	static class NoOpREHandler implements RejectedExecutionHandler{
1629	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1628	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1629	>	public void rejectedExecution(Runnable r,
1630	>	ThreadPoolExecutor executor) {}
1631	>	}
1632	>
1633	>	/**
1634	>	* A CyclicBarrier that uses timed await and fails with
1635	>	* AssertionFailedErrors instead of throwing checked exceptions.
1636	>	*/
1637	>	public class CheckedBarrier extends CyclicBarrier {
1638	>	public CheckedBarrier(int parties) { super(parties); }
1639	>
1640	>	public int await() {
1641	>	try {
1642	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1643	>	} catch (TimeoutException timedOut) {
1644	>	throw new AssertionFailedError("timed out");
1645	>	} catch (Exception fail) {
1646	>	AssertionFailedError afe =
1647	>	new AssertionFailedError("Unexpected exception: " + fail);
1648	>	afe.initCause(fail);
1649	>	throw afe;
1650	>	}
1651	>	}
1652	>	}
1653	>
1654	>	void checkEmpty(BlockingQueue q) {
1655	>	try {
1656	>	assertTrue(q.isEmpty());
1657	>	assertEquals(0, q.size());
1658	>	assertNull(q.peek());
1659	>	assertNull(q.poll());
1660	>	assertNull(q.poll(0, MILLISECONDS));
1661	>	assertEquals(q.toString(), "[]");
1662	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1663	>	assertFalse(q.iterator().hasNext());
1664	>	try {
1665	>	q.element();
1666	>	shouldThrow();
1667	>	} catch (NoSuchElementException success) {}
1668	>	try {
1669	>	q.iterator().next();
1670	>	shouldThrow();
1671	>	} catch (NoSuchElementException success) {}
1672	>	try {
1673	>	q.remove();
1674	>	shouldThrow();
1675	>	} catch (NoSuchElementException success) {}
1676	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1677	>	}
1678	>
1679	>	void assertSerialEquals(Object x, Object y) {
1680	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1681	>	}
1682	>
1683	>	void assertNotSerialEquals(Object x, Object y) {
1684	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1685	>	}
1686	>
1687	>	byte[] serialBytes(Object o) {
1688	>	try {
1689	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1690	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1691	>	oos.writeObject(o);
1692	>	oos.flush();
1693	>	oos.close();
1694	>	return bos.toByteArray();
1695	>	} catch (Throwable fail) {
1696	>	threadUnexpectedException(fail);
1697	>	return new byte[0];
1698	>	}
1699	>	}
1700	>
1701	>	@SuppressWarnings("unchecked")
1702	>	<T> T serialClone(T o) {
1703	>	try {
1704	>	ObjectInputStream ois = new ObjectInputStream
1705	>	(new ByteArrayInputStream(serialBytes(o)));
1706	>	T clone = (T) ois.readObject();
1707	>	assertSame(o.getClass(), clone.getClass());
1708	>	return clone;
1709	>	} catch (Throwable fail) {
1710	>	threadUnexpectedException(fail);
1711	>	return null;
1712	>	}
1713	>	}
1714	>
1715	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1716	>	Runnable... throwingActions) {
1717	>	for (Runnable throwingAction : throwingActions) {
1718	>	boolean threw = false;
1719	>	try { throwingAction.run(); }
1720	>	catch (Throwable t) {
1721	>	threw = true;
1722	>	if (!expectedExceptionClass.isInstance(t)) {
1723	>	AssertionFailedError afe =
1724	>	new AssertionFailedError
1725	>	("Expected " + expectedExceptionClass.getName() +
1726	>	", got " + t.getClass().getName());
1727	>	afe.initCause(t);
1728	>	threadUnexpectedException(afe);
1729	>	}
1730	>	}
1731	>	if (!threw)
1732	>	shouldThrow(expectedExceptionClass.getName());
1733	>	}
1734	>	}
1735	>
1736	>	public void assertIteratorExhausted(Iterator<?> it) {
1737	>	try {
1738	>	it.next();
1739	>	shouldThrow();
1740	>	} catch (NoSuchElementException success) {}
1741	>	assertFalse(it.hasNext());
1742		}
549	–
550	–
1743		}

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