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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.14 by dl, Sun Dec 28 21:56:18 2003 UTC vs.
Revision 1.172 by jsr166, Fri Oct 9 01:26:36 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	+	final int timeoutMinutes = Math.max(runsPerTest / 10, 1);
201	+	for (TestCase lastTestCase = currentTestCase;;) {
202	+	try { MINUTES.sleep(timeoutMinutes); }
203	+	catch (InterruptedException unexpected) { break; }
204	+	if (lastTestCase == currentTestCase) {
205	+	System.err.printf(
206	+	"Looks like we're stuck running test: %s (%d/%d)%n",
207	+	lastTestCase, currentRun, runsPerTest);
208	+	System.err.println("availableProcessors=" +
209	+	Runtime.getRuntime().availableProcessors());
210	+	System.err.printf("cpu model = %s%n", cpuModel());
211	+	dumpTestThreads();
212	+	// one stack dump is probably enough; more would be spam
213	+	break;
214	+	}
215	+	lastTestCase = currentTestCase;
216	+	}}};
217	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
218	+	thread.setDaemon(true);
219	+	thread.start();
220	+	}
221	+
222	+	public static String cpuModel() {
223	+	try {
224	+	Matcher matcher = Pattern.compile("model name\\s*: (.*)")
225	+	.matcher(new String(
226	+	Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
227	+	matcher.find();
228	+	return matcher.group(1);
229	+	} catch (Exception ex) { return null; }
230	+	}
231	+
232	+	public void runBare() throws Throwable {
233	+	currentTestCase = this;
234	+	if (methodFilter == null
235	+	|| methodFilter.matcher(toString()).find())
236	+	super.runBare();
237	+	}
238	+
239	+	protected void runTest() throws Throwable {
240	+	for (int i = 0; i < runsPerTest; i++) {
241	+	currentRun = i;
242	+	if (profileTests)
243	+	runTestProfiled();
244	+	else
245	+	super.runTest();
246	+	}
247	+	}
248	+
249	+	protected void runTestProfiled() throws Throwable {
250	+	for (int i = 0; i < 2; i++) {
251	+	long startTime = System.nanoTime();
252	+	super.runTest();
253	+	long elapsedMillis = millisElapsedSince(startTime);
254	+	if (elapsedMillis < profileThreshold)
255	+	break;
256	+	// Never report first run of any test; treat it as a
257	+	// warmup run, notably to trigger all needed classloading,
258	+	if (i > 0)
259	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
260	+	}
261	+	}
262	+
263		/**
264	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
265	<	*/
266	<	public static void main (String[] args) {
267	<	junit.textui.TestRunner.run (suite());
264	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
265	>	*/
266	>	public static void main(String[] args) {
267	>	main(suite(), args);
268	>	}
269	>
270	>	/**
271	>	* Runs all unit tests in the given test suite.
272	>	* Actual behavior influenced by jsr166.* system properties.
273	>	*/
274	>	static void main(Test suite, String[] args) {
275	>	if (useSecurityManager) {
276	>	System.err.println("Setting a permissive security manager");
277	>	Policy.setPolicy(permissivePolicy());
278	>	System.setSecurityManager(new SecurityManager());
279	>	}
280	>	for (int i = 0; i < suiteRuns; i++) {
281	>	TestResult result = junit.textui.TestRunner.run(suite);
282	>	if (!result.wasSuccessful())
283	>	System.exit(1);
284	>	System.gc();
285	>	System.runFinalization();
286	>	}
287	>	}
288	>
289	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
290	>	TestSuite suite = new TestSuite();
291	>	for (Object suiteOrClass : suiteOrClasses) {
292	>	if (suiteOrClass instanceof TestSuite)
293	>	suite.addTest((TestSuite) suiteOrClass);
294	>	else if (suiteOrClass instanceof Class)
295	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
296	>	else
297	>	throw new ClassCastException("not a test suite or class");
298	>	}
299	>	return suite;
300	>	}
301	>
302	>	public static void addNamedTestClasses(TestSuite suite,
303	>	String... testClassNames) {
304	>	for (String testClassName : testClassNames) {
305	>	try {
306	>	Class<?> testClass = Class.forName(testClassName);
307	>	Method m = testClass.getDeclaredMethod("suite",
308	>	new Class<?>[0]);
309	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
310	>	} catch (Exception e) {
311	>	throw new Error("Missing test class", e);
312	>	}
313	>	}
314	>	}
315	>
316	>	public static final double JAVA_CLASS_VERSION;
317	>	public static final String JAVA_SPECIFICATION_VERSION;
318	>	static {
319	>	try {
320	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
321	>	new java.security.PrivilegedAction<Double>() {
322	>	public Double run() {
323	>	return Double.valueOf(System.getProperty("java.class.version"));}});
324	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
325	>	new java.security.PrivilegedAction<String>() {
326	>	public String run() {
327	>	return System.getProperty("java.specification.version");}});
328	>	} catch (Throwable t) {
329	>	throw new Error(t);
330	>	}
331	>	}
332	>
333	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
334	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
335	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
336	>	public static boolean atLeastJava9() {
337	>	return JAVA_CLASS_VERSION >= 53.0
338	>	// As of 2015-09, java9 still uses 52.0 class file version
339	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
340	>	}
341	>	public static boolean atLeastJava10() {
342	>	return JAVA_CLASS_VERSION >= 54.0
343	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
344		}
345
346		/**
347	<	* Collects all JSR166 unit tests as one suite
348	<	*/
349	<	public static Test suite ( ) {
350	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
351	<
352	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
353	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
354	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
355	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
356	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
357	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
358	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
359	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
360	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
361	<	suite.addTest(new TestSuite(AtomicLongTest.class));
362	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
363	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
364	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
365	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
366	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
367	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
368	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
369	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
370	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
371	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
372	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
373	<	suite.addTest(new TestSuite(DelayQueueTest.class));
374	<	suite.addTest(new TestSuite(ExchangerTest.class));
375	<	suite.addTest(new TestSuite(ExecutorsTest.class));
376	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
377	<	suite.addTest(new TestSuite(FutureTaskTest.class));
378	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
379	<	suite.addTest(new TestSuite(LinkedListTest.class));
380	<	suite.addTest(new TestSuite(LockSupportTest.class));
381	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
382	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
383	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
384	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
385	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
386	<	suite.addTest(new TestSuite(SemaphoreTest.class));
387	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
388	<	suite.addTest(new TestSuite(SystemTest.class));
389	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
390	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
391	<	suite.addTest(new TestSuite(ThreadTest.class));
392	<	suite.addTest(new TestSuite(TimeUnitTest.class));
393	<
347	>	* Collects all JSR166 unit tests as one suite.
348	>	*/
349	>	public static Test suite() {
350	>	// Java7+ test classes
351	>	TestSuite suite = newTestSuite(
352	>	ForkJoinPoolTest.suite(),
353	>	ForkJoinTaskTest.suite(),
354	>	RecursiveActionTest.suite(),
355	>	RecursiveTaskTest.suite(),
356	>	LinkedTransferQueueTest.suite(),
357	>	PhaserTest.suite(),
358	>	ThreadLocalRandomTest.suite(),
359	>	AbstractExecutorServiceTest.suite(),
360	>	AbstractQueueTest.suite(),
361	>	AbstractQueuedSynchronizerTest.suite(),
362	>	AbstractQueuedLongSynchronizerTest.suite(),
363	>	ArrayBlockingQueueTest.suite(),
364	>	ArrayDequeTest.suite(),
365	>	AtomicBooleanTest.suite(),
366	>	AtomicIntegerArrayTest.suite(),
367	>	AtomicIntegerFieldUpdaterTest.suite(),
368	>	AtomicIntegerTest.suite(),
369	>	AtomicLongArrayTest.suite(),
370	>	AtomicLongFieldUpdaterTest.suite(),
371	>	AtomicLongTest.suite(),
372	>	AtomicMarkableReferenceTest.suite(),
373	>	AtomicReferenceArrayTest.suite(),
374	>	AtomicReferenceFieldUpdaterTest.suite(),
375	>	AtomicReferenceTest.suite(),
376	>	AtomicStampedReferenceTest.suite(),
377	>	ConcurrentHashMapTest.suite(),
378	>	ConcurrentLinkedDequeTest.suite(),
379	>	ConcurrentLinkedQueueTest.suite(),
380	>	ConcurrentSkipListMapTest.suite(),
381	>	ConcurrentSkipListSubMapTest.suite(),
382	>	ConcurrentSkipListSetTest.suite(),
383	>	ConcurrentSkipListSubSetTest.suite(),
384	>	CopyOnWriteArrayListTest.suite(),
385	>	CopyOnWriteArraySetTest.suite(),
386	>	CountDownLatchTest.suite(),
387	>	CyclicBarrierTest.suite(),
388	>	DelayQueueTest.suite(),
389	>	EntryTest.suite(),
390	>	ExchangerTest.suite(),
391	>	ExecutorsTest.suite(),
392	>	ExecutorCompletionServiceTest.suite(),
393	>	FutureTaskTest.suite(),
394	>	LinkedBlockingDequeTest.suite(),
395	>	LinkedBlockingQueueTest.suite(),
396	>	LinkedListTest.suite(),
397	>	LockSupportTest.suite(),
398	>	PriorityBlockingQueueTest.suite(),
399	>	PriorityQueueTest.suite(),
400	>	ReentrantLockTest.suite(),
401	>	ReentrantReadWriteLockTest.suite(),
402	>	ScheduledExecutorTest.suite(),
403	>	ScheduledExecutorSubclassTest.suite(),
404	>	SemaphoreTest.suite(),
405	>	SynchronousQueueTest.suite(),
406	>	SystemTest.suite(),
407	>	ThreadLocalTest.suite(),
408	>	ThreadPoolExecutorTest.suite(),
409	>	ThreadPoolExecutorSubclassTest.suite(),
410	>	ThreadTest.suite(),
411	>	TimeUnitTest.suite(),
412	>	TreeMapTest.suite(),
413	>	TreeSetTest.suite(),
414	>	TreeSubMapTest.suite(),
415	>	TreeSubSetTest.suite());
416	>
417	>	// Java8+ test classes
418	>	if (atLeastJava8()) {
419	>	String[] java8TestClassNames = {
420	>	"Atomic8Test",
421	>	"CompletableFutureTest",
422	>	"ConcurrentHashMap8Test",
423	>	"CountedCompleterTest",
424	>	"DoubleAccumulatorTest",
425	>	"DoubleAdderTest",
426	>	"ForkJoinPool8Test",
427	>	"ForkJoinTask8Test",
428	>	"LongAccumulatorTest",
429	>	"LongAdderTest",
430	>	"SplittableRandomTest",
431	>	"StampedLockTest",
432	>	"SubmissionPublisherTest",
433	>	"ThreadLocalRandom8Test",
434	>	};
435	>	addNamedTestClasses(suite, java8TestClassNames);
436	>	}
437	>
438	>	// Java9+ test classes
439	>	if (atLeastJava9()) {
440	>	String[] java9TestClassNames = {
441	>	// Currently empty, but expecting varhandle tests
442	>	};
443	>	addNamedTestClasses(suite, java9TestClassNames);
444	>	}
445	>
446		return suite;
447		}
448
449	+	/** Returns list of junit-style test method names in given class. */
450	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
451	+	Method[] methods = testClass.getDeclaredMethods();
452	+	ArrayList<String> names = new ArrayList<String>(methods.length);
453	+	for (Method method : methods) {
454	+	if (method.getName().startsWith("test")
455	+	&& Modifier.isPublic(method.getModifiers())
456	+	// method.getParameterCount() requires jdk8+
457	+	&& method.getParameterTypes().length == 0) {
458	+	names.add(method.getName());
459	+	}
460	+	}
461	+	return names;
462	+	}
463	+
464	+	/**
465	+	* Returns junit-style testSuite for the given test class, but
466	+	* parameterized by passing extra data to each test.
467	+	*/
468	+	public static <ExtraData> Test parameterizedTestSuite
469	+	(Class<? extends JSR166TestCase> testClass,
470	+	Class<ExtraData> dataClass,
471	+	ExtraData data) {
472	+	try {
473	+	TestSuite suite = new TestSuite();
474	+	Constructor c =
475	+	testClass.getDeclaredConstructor(dataClass, String.class);
476	+	for (String methodName : testMethodNames(testClass))
477	+	suite.addTest((Test) c.newInstance(data, methodName));
478	+	return suite;
479	+	} catch (Exception e) {
480	+	throw new Error(e);
481	+	}
482	+	}
483	+
484	+	/**
485	+	* Returns junit-style testSuite for the jdk8 extension of the
486	+	* given test class, but parameterized by passing extra data to
487	+	* each test.  Uses reflection to allow compilation in jdk7.
488	+	*/
489	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
490	+	(Class<? extends JSR166TestCase> testClass,
491	+	Class<ExtraData> dataClass,
492	+	ExtraData data) {
493	+	if (atLeastJava8()) {
494	+	String name = testClass.getName();
495	+	String name8 = name.replaceAll("Test$", "8Test");
496	+	if (name.equals(name8)) throw new Error(name);
497	+	try {
498	+	return (Test)
499	+	Class.forName(name8)
500	+	.getMethod("testSuite", new Class[] { dataClass })
501	+	.invoke(null, data);
502	+	} catch (Exception e) {
503	+	throw new Error(e);
504	+	}
505	+	} else {
506	+	return new TestSuite();
507	+	}
508	+	}
509	+
510	+	// Delays for timing-dependent tests, in milliseconds.
511
512		public static long SHORT_DELAY_MS;
513		public static long SMALL_DELAY_MS;
514		public static long MEDIUM_DELAY_MS;
515		public static long LONG_DELAY_MS;
516
153	–
517		/**
518	<	* Return the shortest timed delay. This could
519	<	* be reimplmented to use for example a Property.
520	<	*/
518	>	* Returns the shortest timed delay. This could
519	>	* be reimplemented to use for example a Property.
520	>	*/
521		protected long getShortDelay() {
522	<	return 100;
522	>	return 50;
523		}
524
162	–
525		/**
526	<	* Set delays as multiples of SHORT_DELAY.
526	>	* Sets delays as multiples of SHORT_DELAY.
527		*/
528	<	protected  void setDelays() {
528	>	protected void setDelays() {
529		SHORT_DELAY_MS = getShortDelay();
530	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
530	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
531		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
532	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
532	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
533		}
534
535		/**
536	<	* Flag set true if any threadAssert methods fail
536	>	* Returns a timeout in milliseconds to be used in tests that
537	>	* verify that operations block or time out.
538		*/
539	<	volatile boolean threadFailed;
539	>	long timeoutMillis() {
540	>	return SHORT_DELAY_MS / 4;
541	>	}
542
543		/**
544	<	* Initialize test to indicate that no thread assertions have failed
544	>	* Returns a new Date instance representing a time at least
545	>	* delayMillis milliseconds in the future.
546		*/
547	<	public void setUp() {
547	>	Date delayedDate(long delayMillis) {
548	>	// Add 1 because currentTimeMillis is known to round into the past.
549	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
550	>	}
551	>
552	>	/**
553	>	* The first exception encountered if any threadAssertXXX method fails.
554	>	*/
555	>	private final AtomicReference<Throwable> threadFailure
556	>	= new AtomicReference<Throwable>(null);
557	>
558	>	/**
559	>	* Records an exception so that it can be rethrown later in the test
560	>	* harness thread, triggering a test case failure.  Only the first
561	>	* failure is recorded; subsequent calls to this method from within
562	>	* the same test have no effect.
563	>	*/
564	>	public void threadRecordFailure(Throwable t) {
565	>	System.err.println(t);
566	>	dumpTestThreads();
567	>	threadFailure.compareAndSet(null, t);
568	>	}
569	>
570	>	public void setUp() {
571		setDelays();
572	<	threadFailed = false;
572	>	}
573	>
574	>	void tearDownFail(String format, Object... args) {
575	>	String msg = toString() + ": " + String.format(format, args);
576	>	System.err.println(msg);
577	>	dumpTestThreads();
578	>	throw new AssertionFailedError(msg);
579	>	}
580	>
581	>	/**
582	>	* Extra checks that get done for all test cases.
583	>	*
584	>	* Triggers test case failure if any thread assertions have failed,
585	>	* by rethrowing, in the test harness thread, any exception recorded
586	>	* earlier by threadRecordFailure.
587	>	*
588	>	* Triggers test case failure if interrupt status is set in the main thread.
589	>	*/
590	>	public void tearDown() throws Exception {
591	>	Throwable t = threadFailure.getAndSet(null);
592	>	if (t != null) {
593	>	if (t instanceof Error)
594	>	throw (Error) t;
595	>	else if (t instanceof RuntimeException)
596	>	throw (RuntimeException) t;
597	>	else if (t instanceof Exception)
598	>	throw (Exception) t;
599	>	else {
600	>	AssertionFailedError afe =
601	>	new AssertionFailedError(t.toString());
602	>	afe.initCause(t);
603	>	throw afe;
604	>	}
605	>	}
606	>
607	>	if (Thread.interrupted())
608	>	tearDownFail("interrupt status set in main thread");
609	>
610	>	checkForkJoinPoolThreadLeaks();
611		}
612
613		/**
614	<	* Trigger test case failure if any thread assertions have failed
614	>	* Finds missing PoolCleaners
615		*/
616	<	public void tearDown() {
617	<	assertFalse(threadFailed);
616	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
617	>	Thread[] survivors = new Thread[7];
618	>	int count = Thread.enumerate(survivors);
619	>	for (int i = 0; i < count; i++) {
620	>	Thread thread = survivors[i];
621	>	String name = thread.getName();
622	>	if (name.startsWith("ForkJoinPool-")) {
623	>	// give thread some time to terminate
624	>	thread.join(LONG_DELAY_MS);
625	>	if (thread.isAlive())
626	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
627	>	thread);
628	>	}
629	>	}
630	>
631	>	if (!ForkJoinPool.commonPool()
632	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
633	>	tearDownFail("ForkJoin common pool thread stuck");
634		}
635
636		/**
637	<	* Fail, also setting status to indicate current testcase should fail
638	<	*/
637	>	* Just like fail(reason), but additionally recording (using
638	>	* threadRecordFailure) any AssertionFailedError thrown, so that
639	>	* the current testcase will fail.
640	>	*/
641		public void threadFail(String reason) {
642	<	threadFailed = true;
643	<	fail(reason);
642	>	try {
643	>	fail(reason);
644	>	} catch (AssertionFailedError t) {
645	>	threadRecordFailure(t);
646	>	throw t;
647	>	}
648		}
649
650		/**
651	<	* If expression not true, set status to indicate current testcase
652	<	* should fail
653	<	*/
651	>	* Just like assertTrue(b), but additionally recording (using
652	>	* threadRecordFailure) any AssertionFailedError thrown, so that
653	>	* the current testcase will fail.
654	>	*/
655		public void threadAssertTrue(boolean b) {
656	<	if (!b) {
207	<	threadFailed = true;
656	>	try {
657		assertTrue(b);
658	+	} catch (AssertionFailedError t) {
659	+	threadRecordFailure(t);
660	+	throw t;
661		}
662		}
663
664		/**
665	<	* If expression not false, set status to indicate current testcase
666	<	* should fail
667	<	*/
665	>	* Just like assertFalse(b), but additionally recording (using
666	>	* threadRecordFailure) any AssertionFailedError thrown, so that
667	>	* the current testcase will fail.
668	>	*/
669		public void threadAssertFalse(boolean b) {
670	<	if (b) {
218	<	threadFailed = true;
670	>	try {
671		assertFalse(b);
672	+	} catch (AssertionFailedError t) {
673	+	threadRecordFailure(t);
674	+	throw t;
675		}
676		}
677
678		/**
679	<	* If argument not null, set status to indicate current testcase
680	<	* should fail
681	<	*/
679	>	* Just like assertNull(x), but additionally recording (using
680	>	* threadRecordFailure) any AssertionFailedError thrown, so that
681	>	* the current testcase will fail.
682	>	*/
683		public void threadAssertNull(Object x) {
684	<	if (x != null) {
229	<	threadFailed = true;
684	>	try {
685		assertNull(x);
686	+	} catch (AssertionFailedError t) {
687	+	threadRecordFailure(t);
688	+	throw t;
689		}
690		}
691
692		/**
693	<	* If arguments not equal, set status to indicate current testcase
694	<	* should fail
695	<	*/
693	>	* Just like assertEquals(x, y), but additionally recording (using
694	>	* threadRecordFailure) any AssertionFailedError thrown, so that
695	>	* the current testcase will fail.
696	>	*/
697		public void threadAssertEquals(long x, long y) {
698	<	if (x != y) {
240	<	threadFailed = true;
698	>	try {
699		assertEquals(x, y);
700	+	} catch (AssertionFailedError t) {
701	+	threadRecordFailure(t);
702	+	throw t;
703		}
704		}
705
706		/**
707	<	* If arguments not equal, set status to indicate current testcase
708	<	* should fail
709	<	*/
707	>	* Just like assertEquals(x, y), but additionally recording (using
708	>	* threadRecordFailure) any AssertionFailedError thrown, so that
709	>	* the current testcase will fail.
710	>	*/
711		public void threadAssertEquals(Object x, Object y) {
712	<	if (x != y && (x == null || !x.equals(y))) {
251	<	threadFailed = true;
712	>	try {
713		assertEquals(x, y);
714	+	} catch (AssertionFailedError fail) {
715	+	threadRecordFailure(fail);
716	+	throw fail;
717	+	} catch (Throwable fail) {
718	+	threadUnexpectedException(fail);
719	+	}
720	+	}
721	+
722	+	/**
723	+	* Just like assertSame(x, y), but additionally recording (using
724	+	* threadRecordFailure) any AssertionFailedError thrown, so that
725	+	* the current testcase will fail.
726	+	*/
727	+	public void threadAssertSame(Object x, Object y) {
728	+	try {
729	+	assertSame(x, y);
730	+	} catch (AssertionFailedError fail) {
731	+	threadRecordFailure(fail);
732	+	throw fail;
733		}
734		}
735
736		/**
737	<	* threadFail with message "should throw exception"
738	<	*/
737	>	* Calls threadFail with message "should throw exception".
738	>	*/
739		public void threadShouldThrow() {
740	<	threadFailed = true;
741	<	fail("should throw exception");
740	>	threadFail("should throw exception");
741	>	}
742	>
743	>	/**
744	>	* Calls threadFail with message "should throw" + exceptionName.
745	>	*/
746	>	public void threadShouldThrow(String exceptionName) {
747	>	threadFail("should throw " + exceptionName);
748	>	}
749	>
750	>	/**
751	>	* Records the given exception using {@link #threadRecordFailure},
752	>	* then rethrows the exception, wrapping it in an
753	>	* AssertionFailedError if necessary.
754	>	*/
755	>	public void threadUnexpectedException(Throwable t) {
756	>	threadRecordFailure(t);
757	>	t.printStackTrace();
758	>	if (t instanceof RuntimeException)
759	>	throw (RuntimeException) t;
760	>	else if (t instanceof Error)
761	>	throw (Error) t;
762	>	else {
763	>	AssertionFailedError afe =
764	>	new AssertionFailedError("unexpected exception: " + t);
765	>	afe.initCause(t);
766	>	throw afe;
767	>	}
768	>	}
769	>
770	>	/**
771	>	* Delays, via Thread.sleep, for the given millisecond delay, but
772	>	* if the sleep is shorter than specified, may re-sleep or yield
773	>	* until time elapses.  Ensures that the given time, as measured
774	>	* by System.nanoTime(), has elapsed.
775	>	*/
776	>	static void delay(long millis) throws InterruptedException {
777	>	long nanos = millis * (1000 * 1000);
778	>	final long wakeupTime = System.nanoTime() + nanos;
779	>	do {
780	>	if (millis > 0L)
781	>	Thread.sleep(millis);
782	>	else // too short to sleep
783	>	Thread.yield();
784	>	nanos = wakeupTime - System.nanoTime();
785	>	millis = nanos / (1000 * 1000);
786	>	} while (nanos >= 0L);
787	>	}
788	>
789	>	/**
790	>	* Allows use of try-with-resources with per-test thread pools.
791	>	*/
792	>	class PoolCleaner implements AutoCloseable {
793	>	private final ExecutorService pool;
794	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
795	>	public void close() { joinPool(pool); }
796	>	}
797	>
798	>	/**
799	>	* An extension of PoolCleaner that has an action to release the pool.
800	>	*/
801	>	class PoolCleanerWithReleaser extends PoolCleaner {
802	>	private final Runnable releaser;
803	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
804	>	super(pool);
805	>	this.releaser = releaser;
806	>	}
807	>	public void close() {
808	>	try {
809	>	releaser.run();
810	>	} finally {
811	>	super.close();
812	>	}
813	>	}
814	>	}
815	>
816	>	PoolCleaner cleaner(ExecutorService pool) {
817	>	return new PoolCleaner(pool);
818	>	}
819	>
820	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
821	>	return new PoolCleanerWithReleaser(pool, releaser);
822	>	}
823	>
824	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
825	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
826	>	}
827	>
828	>	Runnable releaser(final CountDownLatch latch) {
829	>	return new Runnable() { public void run() {
830	>	do { latch.countDown(); }
831	>	while (latch.getCount() > 0);
832	>	}};
833		}
834
835		/**
836	<	* threadFail with message "Unexpected exception"
836	>	* Waits out termination of a thread pool or fails doing so.
837		*/
838	<	public void threadUnexpectedException() {
839	<	threadFailed = true;
840	<	fail("Unexpected exception");
838	>	void joinPool(ExecutorService pool) {
839	>	try {
840	>	pool.shutdown();
841	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
842	>	try {
843	>	threadFail("ExecutorService " + pool +
844	>	" did not terminate in a timely manner");
845	>	} finally {
846	>	// last resort, for the benefit of subsequent tests
847	>	pool.shutdownNow();
848	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
849	>	}
850	>	}
851	>	} catch (SecurityException ok) {
852	>	// Allowed in case test doesn't have privs
853	>	} catch (InterruptedException fail) {
854	>	threadFail("Unexpected InterruptedException");
855	>	}
856	>	}
857	>
858	>	/** Like Runnable, but with the freedom to throw anything */
859	>	interface Action { public void run() throws Throwable; }
860	>
861	>	/**
862	>	* Runs all the given actions in parallel, failing if any fail.
863	>	* Useful for running multiple variants of tests that are
864	>	* necessarily individually slow because they must block.
865	>	*/
866	>	void testInParallel(Action ... actions) {
867	>	ExecutorService pool = Executors.newCachedThreadPool();
868	>	try (PoolCleaner cleaner = cleaner(pool)) {
869	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
870	>	for (final Action action : actions)
871	>	futures.add(pool.submit(new CheckedRunnable() {
872	>	public void realRun() throws Throwable { action.run();}}));
873	>	for (Future<?> future : futures)
874	>	try {
875	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
876	>	} catch (ExecutionException ex) {
877	>	threadUnexpectedException(ex.getCause());
878	>	} catch (Exception ex) {
879	>	threadUnexpectedException(ex);
880	>	}
881	>	}
882	>	}
883	>
884	>	/**
885	>	* A debugging tool to print stack traces of most threads, as jstack does.
886	>	* Uninteresting threads are filtered out.
887	>	*/
888	>	static void dumpTestThreads() {
889	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
890	>	System.err.println("------ stacktrace dump start ------");
891	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
892	>	String name = info.getThreadName();
893	>	if ("Signal Dispatcher".equals(name))
894	>	continue;
895	>	if ("Reference Handler".equals(name)
896	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
897	>	continue;
898	>	if ("Finalizer".equals(name)
899	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
900	>	continue;
901	>	if ("checkForWedgedTest".equals(name))
902	>	continue;
903	>	System.err.print(info);
904	>	}
905	>	System.err.println("------ stacktrace dump end ------");
906	>	}
907	>
908	>	/**
909	>	* Checks that thread does not terminate within the default
910	>	* millisecond delay of {@code timeoutMillis()}.
911	>	*/
912	>	void assertThreadStaysAlive(Thread thread) {
913	>	assertThreadStaysAlive(thread, timeoutMillis());
914	>	}
915	>
916	>	/**
917	>	* Checks that thread does not terminate within the given millisecond delay.
918	>	*/
919	>	void assertThreadStaysAlive(Thread thread, long millis) {
920	>	try {
921	>	// No need to optimize the failing case via Thread.join.
922	>	delay(millis);
923	>	assertTrue(thread.isAlive());
924	>	} catch (InterruptedException fail) {
925	>	threadFail("Unexpected InterruptedException");
926	>	}
927		}
928
929	+	/**
930	+	* Checks that the threads do not terminate within the default
931	+	* millisecond delay of {@code timeoutMillis()}.
932	+	*/
933	+	void assertThreadsStayAlive(Thread... threads) {
934	+	assertThreadsStayAlive(timeoutMillis(), threads);
935	+	}
936
937		/**
938	<	* Wait out termination of a thread pool or fail doing so
938	>	* Checks that the threads do not terminate within the given millisecond delay.
939		*/
940	<	public void joinPool(ExecutorService exec) {
940	>	void assertThreadsStayAlive(long millis, Thread... threads) {
941		try {
942	<	exec.shutdown();
943	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
944	<	} catch(InterruptedException ie) {
945	<	fail("Unexpected exception");
942	>	// No need to optimize the failing case via Thread.join.
943	>	delay(millis);
944	>	for (Thread thread : threads)
945	>	assertTrue(thread.isAlive());
946	>	} catch (InterruptedException fail) {
947	>	threadFail("Unexpected InterruptedException");
948		}
949		}
950
951	+	/**
952	+	* Checks that future.get times out, with the default timeout of
953	+	* {@code timeoutMillis()}.
954	+	*/
955	+	void assertFutureTimesOut(Future future) {
956	+	assertFutureTimesOut(future, timeoutMillis());
957	+	}
958
959		/**
960	<	* fail with message "should throw exception"
961	<	*/
960	>	* Checks that future.get times out, with the given millisecond timeout.
961	>	*/
962	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
963	>	long startTime = System.nanoTime();
964	>	try {
965	>	future.get(timeoutMillis, MILLISECONDS);
966	>	shouldThrow();
967	>	} catch (TimeoutException success) {
968	>	} catch (Exception fail) {
969	>	threadUnexpectedException(fail);
970	>	} finally { future.cancel(true); }
971	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
972	>	}
973	>
974	>	/**
975	>	* Fails with message "should throw exception".
976	>	*/
977		public void shouldThrow() {
978		fail("Should throw exception");
979		}
980
981		/**
982	<	* fail with message "Unexpected exception"
982	>	* Fails with message "should throw " + exceptionName.
983		*/
984	<	public void unexpectedException() {
985	<	fail("Unexpected exception");
984	>	public void shouldThrow(String exceptionName) {
985	>	fail("Should throw " + exceptionName);
986		}
987
300	–
988		/**
989		* The number of elements to place in collections, arrays, etc.
990		*/
991	<	static final int SIZE = 20;
991	>	public static final int SIZE = 20;
992
993		// Some convenient Integer constants
994
995	<	static final Integer zero = new Integer(0);
996	<	static final Integer one = new Integer(1);
997	<	static final Integer two = new Integer(2);
998	<	static final Integer three  = new Integer(3);
999	<	static final Integer four  = new Integer(4);
1000	<	static final Integer five  = new Integer(5);
1001	<	static final Integer six = new Integer(6);
1002	<	static final Integer seven = new Integer(7);
1003	<	static final Integer eight = new Integer(8);
1004	<	static final Integer nine = new Integer(9);
1005	<	static final Integer m1  = new Integer(-1);
1006	<	static final Integer m2  = new Integer(-2);
1007	<	static final Integer m3  = new Integer(-3);
1008	<	static final Integer m4 = new Integer(-4);
1009	<	static final Integer m5 = new Integer(-5);
1010	<	static final Integer m10 = new Integer(-10);
995	>	public static final Integer zero  = new Integer(0);
996	>	public static final Integer one   = new Integer(1);
997	>	public static final Integer two   = new Integer(2);
998	>	public static final Integer three = new Integer(3);
999	>	public static final Integer four  = new Integer(4);
1000	>	public static final Integer five  = new Integer(5);
1001	>	public static final Integer six   = new Integer(6);
1002	>	public static final Integer seven = new Integer(7);
1003	>	public static final Integer eight = new Integer(8);
1004	>	public static final Integer nine  = new Integer(9);
1005	>	public static final Integer m1  = new Integer(-1);
1006	>	public static final Integer m2  = new Integer(-2);
1007	>	public static final Integer m3  = new Integer(-3);
1008	>	public static final Integer m4  = new Integer(-4);
1009	>	public static final Integer m5  = new Integer(-5);
1010	>	public static final Integer m6  = new Integer(-6);
1011	>	public static final Integer m10 = new Integer(-10);
1012	>
1013	>	/**
1014	>	* Runs Runnable r with a security policy that permits precisely
1015	>	* the specified permissions.  If there is no current security
1016	>	* manager, the runnable is run twice, both with and without a
1017	>	* security manager.  We require that any security manager permit
1018	>	* getPolicy/setPolicy.
1019	>	*/
1020	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1021	>	SecurityManager sm = System.getSecurityManager();
1022	>	if (sm == null) {
1023	>	r.run();
1024	>	}
1025	>	runWithSecurityManagerWithPermissions(r, permissions);
1026	>	}
1027	>
1028	>	/**
1029	>	* Runs Runnable r with a security policy that permits precisely
1030	>	* the specified permissions.  If there is no current security
1031	>	* manager, a temporary one is set for the duration of the
1032	>	* Runnable.  We require that any security manager permit
1033	>	* getPolicy/setPolicy.
1034	>	*/
1035	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1036	>	Permission... permissions) {
1037	>	SecurityManager sm = System.getSecurityManager();
1038	>	if (sm == null) {
1039	>	Policy savedPolicy = Policy.getPolicy();
1040	>	try {
1041	>	Policy.setPolicy(permissivePolicy());
1042	>	System.setSecurityManager(new SecurityManager());
1043	>	runWithSecurityManagerWithPermissions(r, permissions);
1044	>	} finally {
1045	>	System.setSecurityManager(null);
1046	>	Policy.setPolicy(savedPolicy);
1047	>	}
1048	>	} else {
1049	>	Policy savedPolicy = Policy.getPolicy();
1050	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1051	>	Policy.setPolicy(policy);
1052
1053	+	try {
1054	+	r.run();
1055	+	} finally {
1056	+	policy.addPermission(new SecurityPermission("setPolicy"));
1057	+	Policy.setPolicy(savedPolicy);
1058	+	}
1059	+	}
1060	+	}
1061	+
1062	+	/**
1063	+	* Runs a runnable without any permissions.
1064	+	*/
1065	+	public void runWithoutPermissions(Runnable r) {
1066	+	runWithPermissions(r);
1067	+	}
1068
1069		/**
1070		* A security policy where new permissions can be dynamically added
1071		* or all cleared.
1072		*/
1073	<	static class AdjustablePolicy extends java.security.Policy {
1073	>	public static class AdjustablePolicy extends java.security.Policy {
1074		Permissions perms = new Permissions();
1075	<	AdjustablePolicy() { }
1075	>	AdjustablePolicy(Permission... permissions) {
1076	>	for (Permission permission : permissions)
1077	>	perms.add(permission);
1078	>	}
1079		void addPermission(Permission perm) { perms.add(perm); }
1080		void clearPermissions() { perms = new Permissions(); }
1081	<	public PermissionCollection getPermissions(CodeSource cs) {
1082	<	return perms;
1083	<	}
1084	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1085	<	return perms;
1086	<	}
1087	<	public boolean implies(ProtectionDomain pd, Permission p) {
1088	<	return perms.implies(p);
1089	<	}
1090	<	public void refresh() {}
1081	>	public PermissionCollection getPermissions(CodeSource cs) {
1082	>	return perms;
1083	>	}
1084	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1085	>	return perms;
1086	>	}
1087	>	public boolean implies(ProtectionDomain pd, Permission p) {
1088	>	return perms.implies(p);
1089	>	}
1090	>	public void refresh() {}
1091	>	public String toString() {
1092	>	List<Permission> ps = new ArrayList<Permission>();
1093	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1094	>	ps.add(e.nextElement());
1095	>	return "AdjustablePolicy with permissions " + ps;
1096	>	}
1097		}
1098
1099	+	/**
1100	+	* Returns a policy containing all the permissions we ever need.
1101	+	*/
1102	+	public static Policy permissivePolicy() {
1103	+	return new AdjustablePolicy
1104	+	// Permissions j.u.c. needs directly
1105	+	(new RuntimePermission("modifyThread"),
1106	+	new RuntimePermission("getClassLoader"),
1107	+	new RuntimePermission("setContextClassLoader"),
1108	+	// Permissions needed to change permissions!
1109	+	new SecurityPermission("getPolicy"),
1110	+	new SecurityPermission("setPolicy"),
1111	+	new RuntimePermission("setSecurityManager"),
1112	+	// Permissions needed by the junit test harness
1113	+	new RuntimePermission("accessDeclaredMembers"),
1114	+	new PropertyPermission("*", "read"),
1115	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1116	+	}
1117
1118	<	// Some convenient Runnable classes
1118	>	/**
1119	>	* Sleeps until the given time has elapsed.
1120	>	* Throws AssertionFailedError if interrupted.
1121	>	*/
1122	>	void sleep(long millis) {
1123	>	try {
1124	>	delay(millis);
1125	>	} catch (InterruptedException fail) {
1126	>	AssertionFailedError afe =
1127	>	new AssertionFailedError("Unexpected InterruptedException");
1128	>	afe.initCause(fail);
1129	>	throw afe;
1130	>	}
1131	>	}
1132
1133	<	static class NoOpRunnable implements Runnable {
1134	<	public void run() {}
1133	>	/**
1134	>	* Spin-waits up to the specified number of milliseconds for the given
1135	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1136	>	*/
1137	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1138	>	long startTime = System.nanoTime();
1139	>	for (;;) {
1140	>	Thread.State s = thread.getState();
1141	>	if (s == Thread.State.BLOCKED ||
1142	>	s == Thread.State.WAITING ||
1143	>	s == Thread.State.TIMED_WAITING)
1144	>	return;
1145	>	else if (s == Thread.State.TERMINATED)
1146	>	fail("Unexpected thread termination");
1147	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1148	>	threadAssertTrue(thread.isAlive());
1149	>	return;
1150	>	}
1151	>	Thread.yield();
1152	>	}
1153		}
1154
1155	<	static class NoOpCallable implements Callable {
1156	<	public Object call() { return Boolean.TRUE; }
1155	>	/**
1156	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1157	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1158	>	*/
1159	>	void waitForThreadToEnterWaitState(Thread thread) {
1160	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1161		}
1162
1163	<	static final String TEST_STRING = "a test string";
1163	>	/**
1164	>	* Returns the number of milliseconds since time given by
1165	>	* startNanoTime, which must have been previously returned from a
1166	>	* call to {@link System#nanoTime()}.
1167	>	*/
1168	>	static long millisElapsedSince(long startNanoTime) {
1169	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1170	>	}
1171
1172	<	static class StringTask implements Callable<String> {
1173	<	public String call() { return TEST_STRING; }
1172	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1173	>	//         long startTime = System.nanoTime();
1174	>	//         try {
1175	>	//             r.run();
1176	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1177	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1178	>	//             throw new AssertionFailedError("did not return promptly");
1179	>	//     }
1180	>
1181	>	//     void assertTerminatesPromptly(Runnable r) {
1182	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1183	>	//     }
1184	>
1185	>	/**
1186	>	* Checks that timed f.get() returns the expected value, and does not
1187	>	* wait for the timeout to elapse before returning.
1188	>	*/
1189	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1190	>	long startTime = System.nanoTime();
1191	>	try {
1192	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1193	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1194	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1195	>	throw new AssertionFailedError("timed get did not return promptly");
1196		}
1197
1198	<	static class NPETask implements Callable<String> {
1199	<	public String call() { throw new NullPointerException(); }
1198	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1199	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1200		}
1201
1202	<	static class CallableOne implements Callable<Integer> {
1203	<	public Integer call() { return one; }
1202	>	/**
1203	>	* Returns a new started daemon Thread running the given runnable.
1204	>	*/
1205	>	Thread newStartedThread(Runnable runnable) {
1206	>	Thread t = new Thread(runnable);
1207	>	t.setDaemon(true);
1208	>	t.start();
1209	>	return t;
1210		}
1211
1212	<	class ShortRunnable implements Runnable {
1213	<	public void run() {
1214	<	try {
1215	<	Thread.sleep(SHORT_DELAY_MS);
1216	<	}
1217	<	catch(Exception e) {
1218	<	threadUnexpectedException();
1212	>	/**
1213	>	* Waits for the specified time (in milliseconds) for the thread
1214	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1215	>	* the thread (in the hope that it may terminate later) and fails.
1216	>	*/
1217	>	void awaitTermination(Thread t, long timeoutMillis) {
1218	>	try {
1219	>	t.join(timeoutMillis);
1220	>	} catch (InterruptedException fail) {
1221	>	threadUnexpectedException(fail);
1222	>	} finally {
1223	>	if (t.getState() != Thread.State.TERMINATED) {
1224	>	t.interrupt();
1225	>	threadFail("Test timed out");
1226		}
1227		}
1228		}
1229
1230	<	class ShortInterruptedRunnable implements Runnable {
1231	<	public void run() {
1230	>	/**
1231	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1232	>	* terminate (using {@link Thread#join(long)}), else interrupts
1233	>	* the thread (in the hope that it may terminate later) and fails.
1234	>	*/
1235	>	void awaitTermination(Thread t) {
1236	>	awaitTermination(t, LONG_DELAY_MS);
1237	>	}
1238	>
1239	>	// Some convenient Runnable classes
1240	>
1241	>	public abstract class CheckedRunnable implements Runnable {
1242	>	protected abstract void realRun() throws Throwable;
1243	>
1244	>	public final void run() {
1245		try {
1246	<	Thread.sleep(SHORT_DELAY_MS);
1247	<	threadShouldThrow();
1248	<	}
389	<	catch(InterruptedException success) {
1246	>	realRun();
1247	>	} catch (Throwable fail) {
1248	>	threadUnexpectedException(fail);
1249		}
1250		}
1251		}
1252
1253	<	class SmallRunnable implements Runnable {
1254	<	public void run() {
1253	>	public abstract class RunnableShouldThrow implements Runnable {
1254	>	protected abstract void realRun() throws Throwable;
1255	>
1256	>	final Class<?> exceptionClass;
1257	>
1258	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1259	>	this.exceptionClass = exceptionClass;
1260	>	}
1261	>
1262	>	public final void run() {
1263		try {
1264	<	Thread.sleep(SMALL_DELAY_MS);
1265	<	}
1266	<	catch(Exception e) {
1267	<	threadUnexpectedException();
1264	>	realRun();
1265	>	threadShouldThrow(exceptionClass.getSimpleName());
1266	>	} catch (Throwable t) {
1267	>	if (! exceptionClass.isInstance(t))
1268	>	threadUnexpectedException(t);
1269		}
1270		}
1271		}
1272
1273	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1274	<	public void run() {
1273	>	public abstract class ThreadShouldThrow extends Thread {
1274	>	protected abstract void realRun() throws Throwable;
1275	>
1276	>	final Class<?> exceptionClass;
1277	>
1278	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1279	>	this.exceptionClass = exceptionClass;
1280	>	}
1281	>
1282	>	public final void run() {
1283		try {
1284	<	Thread.sleep(SMALL_DELAY_MS);
1285	<	}
1286	<	catch(Exception e) {
1284	>	realRun();
1285	>	threadShouldThrow(exceptionClass.getSimpleName());
1286	>	} catch (Throwable t) {
1287	>	if (! exceptionClass.isInstance(t))
1288	>	threadUnexpectedException(t);
1289		}
1290		}
1291		}
1292
1293	<	class SmallCallable implements Callable {
1294	<	public Object call() {
1293	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1294	>	protected abstract void realRun() throws Throwable;
1295	>
1296	>	public final void run() {
1297		try {
1298	<	Thread.sleep(SMALL_DELAY_MS);
1298	>	realRun();
1299	>	threadShouldThrow("InterruptedException");
1300	>	} catch (InterruptedException success) {
1301	>	threadAssertFalse(Thread.interrupted());
1302	>	} catch (Throwable fail) {
1303	>	threadUnexpectedException(fail);
1304		}
420	–	catch(Exception e) {
421	–	threadUnexpectedException();
422	–	}
423	–	return Boolean.TRUE;
1305		}
1306		}
1307
1308	<	class SmallInterruptedRunnable implements Runnable {
1309	<	public void run() {
1308	>	public abstract class CheckedCallable<T> implements Callable<T> {
1309	>	protected abstract T realCall() throws Throwable;
1310	>
1311	>	public final T call() {
1312		try {
1313	<	Thread.sleep(SMALL_DELAY_MS);
1314	<	threadShouldThrow();
1315	<	}
1316	<	catch(InterruptedException success) {
1313	>	return realCall();
1314	>	} catch (Throwable fail) {
1315	>	threadUnexpectedException(fail);
1316	>	return null;
1317		}
1318		}
1319		}
1320
1321	+	public abstract class CheckedInterruptedCallable<T>
1322	+	implements Callable<T> {
1323	+	protected abstract T realCall() throws Throwable;
1324
1325	<	class MediumRunnable implements Runnable {
440	<	public void run() {
1325	>	public final T call() {
1326		try {
1327	<	Thread.sleep(MEDIUM_DELAY_MS);
1328	<	}
1329	<	catch(Exception e) {
1330	<	threadUnexpectedException();
1327	>	T result = realCall();
1328	>	threadShouldThrow("InterruptedException");
1329	>	return result;
1330	>	} catch (InterruptedException success) {
1331	>	threadAssertFalse(Thread.interrupted());
1332	>	} catch (Throwable fail) {
1333	>	threadUnexpectedException(fail);
1334		}
1335	+	return null;
1336		}
1337		}
1338
1339	<	class MediumInterruptedRunnable implements Runnable {
1340	<	public void run() {
1339	>	public static class NoOpRunnable implements Runnable {
1340	>	public void run() {}
1341	>	}
1342	>
1343	>	public static class NoOpCallable implements Callable {
1344	>	public Object call() { return Boolean.TRUE; }
1345	>	}
1346	>
1347	>	public static final String TEST_STRING = "a test string";
1348	>
1349	>	public static class StringTask implements Callable<String> {
1350	>	final String value;
1351	>	public StringTask() { this(TEST_STRING); }
1352	>	public StringTask(String value) { this.value = value; }
1353	>	public String call() { return value; }
1354	>	}
1355	>
1356	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1357	>	return new CheckedCallable<String>() {
1358	>	protected String realCall() {
1359	>	try {
1360	>	latch.await();
1361	>	} catch (InterruptedException quittingTime) {}
1362	>	return TEST_STRING;
1363	>	}};
1364	>	}
1365	>
1366	>	public Runnable countDowner(final CountDownLatch latch) {
1367	>	return new CheckedRunnable() {
1368	>	public void realRun() throws InterruptedException {
1369	>	latch.countDown();
1370	>	}};
1371	>	}
1372	>
1373	>	class LatchAwaiter extends CheckedRunnable {
1374	>	static final int NEW = 0;
1375	>	static final int RUNNING = 1;
1376	>	static final int DONE = 2;
1377	>	final CountDownLatch latch;
1378	>	int state = NEW;
1379	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1380	>	public void realRun() throws InterruptedException {
1381	>	state = 1;
1382	>	await(latch);
1383	>	state = 2;
1384	>	}
1385	>	}
1386	>
1387	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1388	>	return new LatchAwaiter(latch);
1389	>	}
1390	>
1391	>	public void await(CountDownLatch latch) {
1392	>	try {
1393	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1394	>	} catch (Throwable fail) {
1395	>	threadUnexpectedException(fail);
1396	>	}
1397	>	}
1398	>
1399	>	public void await(Semaphore semaphore) {
1400	>	try {
1401	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1402	>	} catch (Throwable fail) {
1403	>	threadUnexpectedException(fail);
1404	>	}
1405	>	}
1406	>
1407	>	//     /**
1408	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1409	>	//      */
1410	>	//     public void await(AtomicBoolean flag) {
1411	>	//         await(flag, LONG_DELAY_MS);
1412	>	//     }
1413	>
1414	>	//     /**
1415	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1416	>	//      */
1417	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1418	>	//         long startTime = System.nanoTime();
1419	>	//         while (!flag.get()) {
1420	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1421	>	//                 throw new AssertionFailedError("timed out");
1422	>	//             Thread.yield();
1423	>	//         }
1424	>	//     }
1425	>
1426	>	public static class NPETask implements Callable<String> {
1427	>	public String call() { throw new NullPointerException(); }
1428	>	}
1429	>
1430	>	public static class CallableOne implements Callable<Integer> {
1431	>	public Integer call() { return one; }
1432	>	}
1433	>
1434	>	public class ShortRunnable extends CheckedRunnable {
1435	>	protected void realRun() throws Throwable {
1436	>	delay(SHORT_DELAY_MS);
1437	>	}
1438	>	}
1439	>
1440	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1441	>	protected void realRun() throws InterruptedException {
1442	>	delay(SHORT_DELAY_MS);
1443	>	}
1444	>	}
1445	>
1446	>	public class SmallRunnable extends CheckedRunnable {
1447	>	protected void realRun() throws Throwable {
1448	>	delay(SMALL_DELAY_MS);
1449	>	}
1450	>	}
1451	>
1452	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1453	>	protected void realRun() {
1454		try {
1455	<	Thread.sleep(MEDIUM_DELAY_MS);
1456	<	threadShouldThrow();
455	<	}
456	<	catch(InterruptedException success) {
457	<	}
1455	>	delay(SMALL_DELAY_MS);
1456	>	} catch (InterruptedException ok) {}
1457		}
1458		}
1459
1460	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1461	<	public void run() {
1460	>	public class SmallCallable extends CheckedCallable {
1461	>	protected Object realCall() throws InterruptedException {
1462	>	delay(SMALL_DELAY_MS);
1463	>	return Boolean.TRUE;
1464	>	}
1465	>	}
1466	>
1467	>	public class MediumRunnable extends CheckedRunnable {
1468	>	protected void realRun() throws Throwable {
1469	>	delay(MEDIUM_DELAY_MS);
1470	>	}
1471	>	}
1472	>
1473	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1474	>	protected void realRun() throws InterruptedException {
1475	>	delay(MEDIUM_DELAY_MS);
1476	>	}
1477	>	}
1478	>
1479	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1480	>	return new CheckedRunnable() {
1481	>	protected void realRun() {
1482	>	try {
1483	>	delay(timeoutMillis);
1484	>	} catch (InterruptedException ok) {}
1485	>	}};
1486	>	}
1487	>
1488	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1489	>	protected void realRun() {
1490		try {
1491	<	Thread.sleep(MEDIUM_DELAY_MS);
1492	<	}
466	<	catch(InterruptedException success) {
467	<	}
1491	>	delay(MEDIUM_DELAY_MS);
1492	>	} catch (InterruptedException ok) {}
1493		}
1494		}
1495
1496	<	class LongPossiblyInterruptedRunnable implements Runnable {
1497	<	public void run() {
1496	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1497	>	protected void realRun() {
1498		try {
1499	<	Thread.sleep(LONG_DELAY_MS);
1500	<	}
476	<	catch(InterruptedException success) {
477	<	}
1499	>	delay(LONG_DELAY_MS);
1500	>	} catch (InterruptedException ok) {}
1501		}
1502		}
1503
1504		/**
1505		* For use as ThreadFactory in constructors
1506		*/
1507	<	static class SimpleThreadFactory implements ThreadFactory{
1508	<	public Thread newThread(Runnable r){
1507	>	public static class SimpleThreadFactory implements ThreadFactory {
1508	>	public Thread newThread(Runnable r) {
1509		return new Thread(r);
1510	<	}
1510	>	}
1511		}
1512
1513	<	static class TrackedShortRunnable implements Runnable {
1514	<	volatile boolean done = false;
1513	>	public interface TrackedRunnable extends Runnable {
1514	>	boolean isDone();
1515	>	}
1516	>
1517	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1518	>	return new TrackedRunnable() {
1519	>	private volatile boolean done = false;
1520	>	public boolean isDone() { return done; }
1521	>	public void run() {
1522	>	try {
1523	>	delay(timeoutMillis);
1524	>	done = true;
1525	>	} catch (InterruptedException ok) {}
1526	>	}
1527	>	};
1528	>	}
1529	>
1530	>	public static class TrackedShortRunnable implements Runnable {
1531	>	public volatile boolean done = false;
1532		public void run() {
1533		try {
1534	<	Thread.sleep(SMALL_DELAY_MS);
1534	>	delay(SHORT_DELAY_MS);
1535		done = true;
1536	<	} catch(Exception e){
497	<	}
1536	>	} catch (InterruptedException ok) {}
1537		}
1538		}
1539
1540	<	static class TrackedMediumRunnable implements Runnable {
1541	<	volatile boolean done = false;
1540	>	public static class TrackedSmallRunnable implements Runnable {
1541	>	public volatile boolean done = false;
1542		public void run() {
1543		try {
1544	<	Thread.sleep(MEDIUM_DELAY_MS);
1544	>	delay(SMALL_DELAY_MS);
1545		done = true;
1546	<	} catch(Exception e){
508	<	}
1546	>	} catch (InterruptedException ok) {}
1547		}
1548		}
1549
1550	<	static class TrackedLongRunnable implements Runnable {
1551	<	volatile boolean done = false;
1550	>	public static class TrackedMediumRunnable implements Runnable {
1551	>	public volatile boolean done = false;
1552		public void run() {
1553		try {
1554	<	Thread.sleep(LONG_DELAY_MS);
1554	>	delay(MEDIUM_DELAY_MS);
1555		done = true;
1556	<	} catch(Exception e){
1557	<	}
1556	>	} catch (InterruptedException ok) {}
1557	>	}
1558	>	}
1559	>
1560	>	public static class TrackedLongRunnable implements Runnable {
1561	>	public volatile boolean done = false;
1562	>	public void run() {
1563	>	try {
1564	>	delay(LONG_DELAY_MS);
1565	>	done = true;
1566	>	} catch (InterruptedException ok) {}
1567		}
1568		}
1569
1570	<	static class TrackedNoOpRunnable implements Runnable {
1571	<	volatile boolean done = false;
1570	>	public static class TrackedNoOpRunnable implements Runnable {
1571	>	public volatile boolean done = false;
1572		public void run() {
1573		done = true;
1574		}
1575		}
1576
1577	<	static class TrackedCallable implements Callable {
1578	<	volatile boolean done = false;
1577	>	public static class TrackedCallable implements Callable {
1578	>	public volatile boolean done = false;
1579		public Object call() {
1580		try {
1581	<	Thread.sleep(SMALL_DELAY_MS);
1581	>	delay(SMALL_DELAY_MS);
1582		done = true;
1583	<	} catch(Exception e){
537	<	}
1583	>	} catch (InterruptedException ok) {}
1584		return Boolean.TRUE;
1585		}
1586		}
1587
1588	+	/**
1589	+	* Analog of CheckedRunnable for RecursiveAction
1590	+	*/
1591	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1592	+	protected abstract void realCompute() throws Throwable;
1593	+
1594	+	@Override protected final void compute() {
1595	+	try {
1596	+	realCompute();
1597	+	} catch (Throwable fail) {
1598	+	threadUnexpectedException(fail);
1599	+	}
1600	+	}
1601	+	}
1602	+
1603	+	/**
1604	+	* Analog of CheckedCallable for RecursiveTask
1605	+	*/
1606	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1607	+	protected abstract T realCompute() throws Throwable;
1608	+
1609	+	@Override protected final T compute() {
1610	+	try {
1611	+	return realCompute();
1612	+	} catch (Throwable fail) {
1613	+	threadUnexpectedException(fail);
1614	+	return null;
1615	+	}
1616	+	}
1617	+	}
1618
1619		/**
1620		* For use as RejectedExecutionHandler in constructors
1621		*/
1622	<	static class NoOpREHandler implements RejectedExecutionHandler{
1623	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1622	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1623	>	public void rejectedExecution(Runnable r,
1624	>	ThreadPoolExecutor executor) {}
1625	>	}
1626	>
1627	>	/**
1628	>	* A CyclicBarrier that uses timed await and fails with
1629	>	* AssertionFailedErrors instead of throwing checked exceptions.
1630	>	*/
1631	>	public class CheckedBarrier extends CyclicBarrier {
1632	>	public CheckedBarrier(int parties) { super(parties); }
1633	>
1634	>	public int await() {
1635	>	try {
1636	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1637	>	} catch (TimeoutException timedOut) {
1638	>	throw new AssertionFailedError("timed out");
1639	>	} catch (Exception fail) {
1640	>	AssertionFailedError afe =
1641	>	new AssertionFailedError("Unexpected exception: " + fail);
1642	>	afe.initCause(fail);
1643	>	throw afe;
1644	>	}
1645	>	}
1646	>	}
1647	>
1648	>	void checkEmpty(BlockingQueue q) {
1649	>	try {
1650	>	assertTrue(q.isEmpty());
1651	>	assertEquals(0, q.size());
1652	>	assertNull(q.peek());
1653	>	assertNull(q.poll());
1654	>	assertNull(q.poll(0, MILLISECONDS));
1655	>	assertEquals(q.toString(), "[]");
1656	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1657	>	assertFalse(q.iterator().hasNext());
1658	>	try {
1659	>	q.element();
1660	>	shouldThrow();
1661	>	} catch (NoSuchElementException success) {}
1662	>	try {
1663	>	q.iterator().next();
1664	>	shouldThrow();
1665	>	} catch (NoSuchElementException success) {}
1666	>	try {
1667	>	q.remove();
1668	>	shouldThrow();
1669	>	} catch (NoSuchElementException success) {}
1670	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1671	>	}
1672	>
1673	>	void assertSerialEquals(Object x, Object y) {
1674	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1675	>	}
1676	>
1677	>	void assertNotSerialEquals(Object x, Object y) {
1678	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1679	>	}
1680	>
1681	>	byte[] serialBytes(Object o) {
1682	>	try {
1683	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1684	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1685	>	oos.writeObject(o);
1686	>	oos.flush();
1687	>	oos.close();
1688	>	return bos.toByteArray();
1689	>	} catch (Throwable fail) {
1690	>	threadUnexpectedException(fail);
1691	>	return new byte[0];
1692	>	}
1693	>	}
1694	>
1695	>	@SuppressWarnings("unchecked")
1696	>	<T> T serialClone(T o) {
1697	>	try {
1698	>	ObjectInputStream ois = new ObjectInputStream
1699	>	(new ByteArrayInputStream(serialBytes(o)));
1700	>	T clone = (T) ois.readObject();
1701	>	assertSame(o.getClass(), clone.getClass());
1702	>	return clone;
1703	>	} catch (Throwable fail) {
1704	>	threadUnexpectedException(fail);
1705	>	return null;
1706	>	}
1707	>	}
1708	>
1709	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1710	>	Runnable... throwingActions) {
1711	>	for (Runnable throwingAction : throwingActions) {
1712	>	boolean threw = false;
1713	>	try { throwingAction.run(); }
1714	>	catch (Throwable t) {
1715	>	threw = true;
1716	>	if (!expectedExceptionClass.isInstance(t)) {
1717	>	AssertionFailedError afe =
1718	>	new AssertionFailedError
1719	>	("Expected " + expectedExceptionClass.getName() +
1720	>	", got " + t.getClass().getName());
1721	>	afe.initCause(t);
1722	>	threadUnexpectedException(afe);
1723	>	}
1724	>	}
1725	>	if (!threw)
1726	>	shouldThrow(expectedExceptionClass.getName());
1727	>	}
1728	>	}
1729	>
1730	>	public void assertIteratorExhausted(Iterator<?> it) {
1731	>	try {
1732	>	it.next();
1733	>	shouldThrow();
1734	>	} catch (NoSuchElementException success) {}
1735	>	assertFalse(it.hasNext());
1736		}
549	–
550	–
1737		}

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