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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 1.171 by jsr166, Thu Oct 8 23:06:01 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
209	+	("Looks like we're stuck running test: "
210	+	+ lastTestCase + " (" + currentRun + "/" + runsPerTest + ")");
211	+	System.err.println("availableProcessors=" +
212	+	Runtime.getRuntime().availableProcessors());
213	+	System.err.printf("cpu model = %s%n", cpuModel());
214	+	dumpTestThreads();
215	+	// one stack dump is probably enough; more would be spam
216	+	break;
217	+	}
218	+	lastTestCase = currentTestCase;
219	+	}}};
220	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
221	+	thread.setDaemon(true);
222	+	thread.start();
223	+	}
224	+
225	+	public static String cpuModel() {
226	+	try {
227	+	Matcher matcher = Pattern.compile("model name\\s*: (.*)")
228	+	.matcher(new String(
229	+	Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
230	+	matcher.find();
231	+	return matcher.group(1);
232	+	} catch (Exception ex) { return null; }
233	+	}
234	+
235	+	public void runBare() throws Throwable {
236	+	currentTestCase = this;
237	+	if (methodFilter == null
238	+	|| methodFilter.matcher(toString()).find())
239	+	super.runBare();
240	+	}
241	+
242	+	protected void runTest() throws Throwable {
243	+	for (int i = 0; i < runsPerTest; i++) {
244	+	currentRun = i;
245	+	if (profileTests)
246	+	runTestProfiled();
247	+	else
248	+	super.runTest();
249	+	}
250	+	}
251	+
252	+	protected void runTestProfiled() throws Throwable {
253	+	for (int i = 0; i < 2; i++) {
254	+	long startTime = System.nanoTime();
255	+	super.runTest();
256	+	long elapsedMillis = millisElapsedSince(startTime);
257	+	if (elapsedMillis < profileThreshold)
258	+	break;
259	+	// Never report first run of any test; treat it as a
260	+	// warmup run, notably to trigger all needed classloading,
261	+	if (i > 0)
262	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
263	+	}
264	+	}
265	+
266		/**
267	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
268	<	*/
269	<	public static void main (String[] args) {
270	<	junit.textui.TestRunner.run (suite());
267	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
268	>	*/
269	>	public static void main(String[] args) {
270	>	main(suite(), args);
271	>	}
272	>
273	>	/**
274	>	* Runs all unit tests in the given test suite.
275	>	* Actual behavior influenced by jsr166.* system properties.
276	>	*/
277	>	static void main(Test suite, String[] args) {
278	>	if (useSecurityManager) {
279	>	System.err.println("Setting a permissive security manager");
280	>	Policy.setPolicy(permissivePolicy());
281	>	System.setSecurityManager(new SecurityManager());
282	>	}
283	>	for (int i = 0; i < suiteRuns; i++) {
284	>	TestResult result = junit.textui.TestRunner.run(suite);
285	>	if (!result.wasSuccessful())
286	>	System.exit(1);
287	>	System.gc();
288	>	System.runFinalization();
289	>	}
290	>	}
291	>
292	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
293	>	TestSuite suite = new TestSuite();
294	>	for (Object suiteOrClass : suiteOrClasses) {
295	>	if (suiteOrClass instanceof TestSuite)
296	>	suite.addTest((TestSuite) suiteOrClass);
297	>	else if (suiteOrClass instanceof Class)
298	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
299	>	else
300	>	throw new ClassCastException("not a test suite or class");
301	>	}
302	>	return suite;
303	>	}
304	>
305	>	public static void addNamedTestClasses(TestSuite suite,
306	>	String... testClassNames) {
307	>	for (String testClassName : testClassNames) {
308	>	try {
309	>	Class<?> testClass = Class.forName(testClassName);
310	>	Method m = testClass.getDeclaredMethod("suite",
311	>	new Class<?>[0]);
312	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
313	>	} catch (Exception e) {
314	>	throw new Error("Missing test class", e);
315	>	}
316	>	}
317	>	}
318	>
319	>	public static final double JAVA_CLASS_VERSION;
320	>	public static final String JAVA_SPECIFICATION_VERSION;
321	>	static {
322	>	try {
323	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
324	>	new java.security.PrivilegedAction<Double>() {
325	>	public Double run() {
326	>	return Double.valueOf(System.getProperty("java.class.version"));}});
327	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
328	>	new java.security.PrivilegedAction<String>() {
329	>	public String run() {
330	>	return System.getProperty("java.specification.version");}});
331	>	} catch (Throwable t) {
332	>	throw new Error(t);
333	>	}
334	>	}
335	>
336	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
337	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
338	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
339	>	public static boolean atLeastJava9() {
340	>	return JAVA_CLASS_VERSION >= 53.0
341	>	// As of 2015-09, java9 still uses 52.0 class file version
342	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
343	>	}
344	>	public static boolean atLeastJava10() {
345	>	return JAVA_CLASS_VERSION >= 54.0
346	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
347		}
348
349		/**
350	<	* Collects all JSR166 unit tests as one suite
351	<	*/
352	<	public static Test suite ( ) {
353	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
354	<
355	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
356	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
357	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
358	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
359	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
360	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
361	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
362	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
363	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
364	<	suite.addTest(new TestSuite(AtomicLongTest.class));
365	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
366	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
367	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
368	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
369	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
370	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
371	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
372	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
373	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
374	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
375	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
376	<	suite.addTest(new TestSuite(DelayQueueTest.class));
377	<	suite.addTest(new TestSuite(ExchangerTest.class));
378	<	suite.addTest(new TestSuite(ExecutorsTest.class));
379	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
380	<	suite.addTest(new TestSuite(FutureTaskTest.class));
381	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
382	<	suite.addTest(new TestSuite(LinkedListTest.class));
383	<	suite.addTest(new TestSuite(LockSupportTest.class));
384	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
385	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
386	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
387	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
388	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
389	<	suite.addTest(new TestSuite(SemaphoreTest.class));
390	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
391	<	suite.addTest(new TestSuite(SystemTest.class));
392	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
393	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
394	<	suite.addTest(new TestSuite(ThreadTest.class));
395	<	suite.addTest(new TestSuite(TimeUnitTest.class));
396	<
350	>	* Collects all JSR166 unit tests as one suite.
351	>	*/
352	>	public static Test suite() {
353	>	// Java7+ test classes
354	>	TestSuite suite = newTestSuite(
355	>	ForkJoinPoolTest.suite(),
356	>	ForkJoinTaskTest.suite(),
357	>	RecursiveActionTest.suite(),
358	>	RecursiveTaskTest.suite(),
359	>	LinkedTransferQueueTest.suite(),
360	>	PhaserTest.suite(),
361	>	ThreadLocalRandomTest.suite(),
362	>	AbstractExecutorServiceTest.suite(),
363	>	AbstractQueueTest.suite(),
364	>	AbstractQueuedSynchronizerTest.suite(),
365	>	AbstractQueuedLongSynchronizerTest.suite(),
366	>	ArrayBlockingQueueTest.suite(),
367	>	ArrayDequeTest.suite(),
368	>	AtomicBooleanTest.suite(),
369	>	AtomicIntegerArrayTest.suite(),
370	>	AtomicIntegerFieldUpdaterTest.suite(),
371	>	AtomicIntegerTest.suite(),
372	>	AtomicLongArrayTest.suite(),
373	>	AtomicLongFieldUpdaterTest.suite(),
374	>	AtomicLongTest.suite(),
375	>	AtomicMarkableReferenceTest.suite(),
376	>	AtomicReferenceArrayTest.suite(),
377	>	AtomicReferenceFieldUpdaterTest.suite(),
378	>	AtomicReferenceTest.suite(),
379	>	AtomicStampedReferenceTest.suite(),
380	>	ConcurrentHashMapTest.suite(),
381	>	ConcurrentLinkedDequeTest.suite(),
382	>	ConcurrentLinkedQueueTest.suite(),
383	>	ConcurrentSkipListMapTest.suite(),
384	>	ConcurrentSkipListSubMapTest.suite(),
385	>	ConcurrentSkipListSetTest.suite(),
386	>	ConcurrentSkipListSubSetTest.suite(),
387	>	CopyOnWriteArrayListTest.suite(),
388	>	CopyOnWriteArraySetTest.suite(),
389	>	CountDownLatchTest.suite(),
390	>	CyclicBarrierTest.suite(),
391	>	DelayQueueTest.suite(),
392	>	EntryTest.suite(),
393	>	ExchangerTest.suite(),
394	>	ExecutorsTest.suite(),
395	>	ExecutorCompletionServiceTest.suite(),
396	>	FutureTaskTest.suite(),
397	>	LinkedBlockingDequeTest.suite(),
398	>	LinkedBlockingQueueTest.suite(),
399	>	LinkedListTest.suite(),
400	>	LockSupportTest.suite(),
401	>	PriorityBlockingQueueTest.suite(),
402	>	PriorityQueueTest.suite(),
403	>	ReentrantLockTest.suite(),
404	>	ReentrantReadWriteLockTest.suite(),
405	>	ScheduledExecutorTest.suite(),
406	>	ScheduledExecutorSubclassTest.suite(),
407	>	SemaphoreTest.suite(),
408	>	SynchronousQueueTest.suite(),
409	>	SystemTest.suite(),
410	>	ThreadLocalTest.suite(),
411	>	ThreadPoolExecutorTest.suite(),
412	>	ThreadPoolExecutorSubclassTest.suite(),
413	>	ThreadTest.suite(),
414	>	TimeUnitTest.suite(),
415	>	TreeMapTest.suite(),
416	>	TreeSetTest.suite(),
417	>	TreeSubMapTest.suite(),
418	>	TreeSubSetTest.suite());
419	>
420	>	// Java8+ test classes
421	>	if (atLeastJava8()) {
422	>	String[] java8TestClassNames = {
423	>	"Atomic8Test",
424	>	"CompletableFutureTest",
425	>	"ConcurrentHashMap8Test",
426	>	"CountedCompleterTest",
427	>	"DoubleAccumulatorTest",
428	>	"DoubleAdderTest",
429	>	"ForkJoinPool8Test",
430	>	"ForkJoinTask8Test",
431	>	"LongAccumulatorTest",
432	>	"LongAdderTest",
433	>	"SplittableRandomTest",
434	>	"StampedLockTest",
435	>	"SubmissionPublisherTest",
436	>	"ThreadLocalRandom8Test",
437	>	};
438	>	addNamedTestClasses(suite, java8TestClassNames);
439	>	}
440	>
441	>	// Java9+ test classes
442	>	if (atLeastJava9()) {
443	>	String[] java9TestClassNames = {
444	>	// Currently empty, but expecting varhandle tests
445	>	};
446	>	addNamedTestClasses(suite, java9TestClassNames);
447	>	}
448	>
449		return suite;
450		}
451
452	+	/** Returns list of junit-style test method names in given class. */
453	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
454	+	Method[] methods = testClass.getDeclaredMethods();
455	+	ArrayList<String> names = new ArrayList<String>(methods.length);
456	+	for (Method method : methods) {
457	+	if (method.getName().startsWith("test")
458	+	&& Modifier.isPublic(method.getModifiers())
459	+	// method.getParameterCount() requires jdk8+
460	+	&& method.getParameterTypes().length == 0) {
461	+	names.add(method.getName());
462	+	}
463	+	}
464	+	return names;
465	+	}
466	+
467	+	/**
468	+	* Returns junit-style testSuite for the given test class, but
469	+	* parameterized by passing extra data to each test.
470	+	*/
471	+	public static <ExtraData> Test parameterizedTestSuite
472	+	(Class<? extends JSR166TestCase> testClass,
473	+	Class<ExtraData> dataClass,
474	+	ExtraData data) {
475	+	try {
476	+	TestSuite suite = new TestSuite();
477	+	Constructor c =
478	+	testClass.getDeclaredConstructor(dataClass, String.class);
479	+	for (String methodName : testMethodNames(testClass))
480	+	suite.addTest((Test) c.newInstance(data, methodName));
481	+	return suite;
482	+	} catch (Exception e) {
483	+	throw new Error(e);
484	+	}
485	+	}
486	+
487	+	/**
488	+	* Returns junit-style testSuite for the jdk8 extension of the
489	+	* given test class, but parameterized by passing extra data to
490	+	* each test.  Uses reflection to allow compilation in jdk7.
491	+	*/
492	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
493	+	(Class<? extends JSR166TestCase> testClass,
494	+	Class<ExtraData> dataClass,
495	+	ExtraData data) {
496	+	if (atLeastJava8()) {
497	+	String name = testClass.getName();
498	+	String name8 = name.replaceAll("Test$", "8Test");
499	+	if (name.equals(name8)) throw new Error(name);
500	+	try {
501	+	return (Test)
502	+	Class.forName(name8)
503	+	.getMethod("testSuite", new Class[] { dataClass })
504	+	.invoke(null, data);
505	+	} catch (Exception e) {
506	+	throw new Error(e);
507	+	}
508	+	} else {
509	+	return new TestSuite();
510	+	}
511	+	}
512	+
513	+	// Delays for timing-dependent tests, in milliseconds.
514
515		public static long SHORT_DELAY_MS;
516		public static long SMALL_DELAY_MS;
517		public static long MEDIUM_DELAY_MS;
518		public static long LONG_DELAY_MS;
519
153	–
520		/**
521	<	* Return the shortest timed delay. This could
522	<	* be reimplmented to use for example a Property.
523	<	*/
521	>	* Returns the shortest timed delay. This could
522	>	* be reimplemented to use for example a Property.
523	>	*/
524		protected long getShortDelay() {
525	<	return 100;
525	>	return 50;
526		}
527
162	–
528		/**
529	<	* Set delays as multiples of SHORT_DELAY.
529	>	* Sets delays as multiples of SHORT_DELAY.
530		*/
531	<	protected  void setDelays() {
531	>	protected void setDelays() {
532		SHORT_DELAY_MS = getShortDelay();
533	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
533	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
534		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
535	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
535	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
536		}
537
538		/**
539	<	* Flag set true if any threadAssert methods fail
539	>	* Returns a timeout in milliseconds to be used in tests that
540	>	* verify that operations block or time out.
541		*/
542	<	volatile boolean threadFailed;
542	>	long timeoutMillis() {
543	>	return SHORT_DELAY_MS / 4;
544	>	}
545
546		/**
547	<	* Initialize test to indicate that no thread assertions have failed
547	>	* Returns a new Date instance representing a time at least
548	>	* delayMillis milliseconds in the future.
549		*/
550	<	public void setUp() {
550	>	Date delayedDate(long delayMillis) {
551	>	// Add 1 because currentTimeMillis is known to round into the past.
552	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
553	>	}
554	>
555	>	/**
556	>	* The first exception encountered if any threadAssertXXX method fails.
557	>	*/
558	>	private final AtomicReference<Throwable> threadFailure
559	>	= new AtomicReference<Throwable>(null);
560	>
561	>	/**
562	>	* Records an exception so that it can be rethrown later in the test
563	>	* harness thread, triggering a test case failure.  Only the first
564	>	* failure is recorded; subsequent calls to this method from within
565	>	* the same test have no effect.
566	>	*/
567	>	public void threadRecordFailure(Throwable t) {
568	>	System.err.println(t);
569	>	dumpTestThreads();
570	>	threadFailure.compareAndSet(null, t);
571	>	}
572	>
573	>	public void setUp() {
574		setDelays();
575	<	threadFailed = false;
575	>	}
576	>
577	>	void tearDownFail(String format, Object... args) {
578	>	String msg = toString() + ": " + String.format(format, args);
579	>	System.err.println(msg);
580	>	dumpTestThreads();
581	>	throw new AssertionFailedError(msg);
582	>	}
583	>
584	>	/**
585	>	* Extra checks that get done for all test cases.
586	>	*
587	>	* Triggers test case failure if any thread assertions have failed,
588	>	* by rethrowing, in the test harness thread, any exception recorded
589	>	* earlier by threadRecordFailure.
590	>	*
591	>	* Triggers test case failure if interrupt status is set in the main thread.
592	>	*/
593	>	public void tearDown() throws Exception {
594	>	Throwable t = threadFailure.getAndSet(null);
595	>	if (t != null) {
596	>	if (t instanceof Error)
597	>	throw (Error) t;
598	>	else if (t instanceof RuntimeException)
599	>	throw (RuntimeException) t;
600	>	else if (t instanceof Exception)
601	>	throw (Exception) t;
602	>	else {
603	>	AssertionFailedError afe =
604	>	new AssertionFailedError(t.toString());
605	>	afe.initCause(t);
606	>	throw afe;
607	>	}
608	>	}
609	>
610	>	if (Thread.interrupted())
611	>	tearDownFail("interrupt status set in main thread");
612	>
613	>	checkForkJoinPoolThreadLeaks();
614		}
615
616		/**
617	<	* Trigger test case failure if any thread assertions have failed
617	>	* Finds missing PoolCleaners
618		*/
619	<	public void tearDown() {
620	<	assertFalse(threadFailed);
619	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
620	>	Thread[] survivors = new Thread[7];
621	>	int count = Thread.enumerate(survivors);
622	>	for (int i = 0; i < count; i++) {
623	>	Thread thread = survivors[i];
624	>	String name = thread.getName();
625	>	if (name.startsWith("ForkJoinPool-")) {
626	>	// give thread some time to terminate
627	>	thread.join(LONG_DELAY_MS);
628	>	if (thread.isAlive())
629	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
630	>	thread);
631	>	}
632	>	}
633	>
634	>	if (!ForkJoinPool.commonPool()
635	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
636	>	tearDownFail("ForkJoin common pool thread stuck");
637		}
638
639		/**
640	<	* Fail, also setting status to indicate current testcase should fail
641	<	*/
640	>	* Just like fail(reason), but additionally recording (using
641	>	* threadRecordFailure) any AssertionFailedError thrown, so that
642	>	* the current testcase will fail.
643	>	*/
644		public void threadFail(String reason) {
645	<	threadFailed = true;
646	<	fail(reason);
645	>	try {
646	>	fail(reason);
647	>	} catch (AssertionFailedError t) {
648	>	threadRecordFailure(t);
649	>	throw t;
650	>	}
651		}
652
653		/**
654	<	* If expression not true, set status to indicate current testcase
655	<	* should fail
656	<	*/
654	>	* Just like assertTrue(b), but additionally recording (using
655	>	* threadRecordFailure) any AssertionFailedError thrown, so that
656	>	* the current testcase will fail.
657	>	*/
658		public void threadAssertTrue(boolean b) {
659	<	if (!b) {
207	<	threadFailed = true;
659	>	try {
660		assertTrue(b);
661	+	} catch (AssertionFailedError t) {
662	+	threadRecordFailure(t);
663	+	throw t;
664		}
665		}
666
667		/**
668	<	* If expression not false, set status to indicate current testcase
669	<	* should fail
670	<	*/
668	>	* Just like assertFalse(b), but additionally recording (using
669	>	* threadRecordFailure) any AssertionFailedError thrown, so that
670	>	* the current testcase will fail.
671	>	*/
672		public void threadAssertFalse(boolean b) {
673	<	if (b) {
218	<	threadFailed = true;
673	>	try {
674		assertFalse(b);
675	+	} catch (AssertionFailedError t) {
676	+	threadRecordFailure(t);
677	+	throw t;
678		}
679		}
680
681		/**
682	<	* If argument not null, set status to indicate current testcase
683	<	* should fail
684	<	*/
682	>	* Just like assertNull(x), but additionally recording (using
683	>	* threadRecordFailure) any AssertionFailedError thrown, so that
684	>	* the current testcase will fail.
685	>	*/
686		public void threadAssertNull(Object x) {
687	<	if (x != null) {
229	<	threadFailed = true;
687	>	try {
688		assertNull(x);
689	+	} catch (AssertionFailedError t) {
690	+	threadRecordFailure(t);
691	+	throw t;
692		}
693		}
694
695		/**
696	<	* If arguments not equal, set status to indicate current testcase
697	<	* should fail
698	<	*/
696	>	* Just like assertEquals(x, y), but additionally recording (using
697	>	* threadRecordFailure) any AssertionFailedError thrown, so that
698	>	* the current testcase will fail.
699	>	*/
700		public void threadAssertEquals(long x, long y) {
701	<	if (x != y) {
240	<	threadFailed = true;
701	>	try {
702		assertEquals(x, y);
703	+	} catch (AssertionFailedError t) {
704	+	threadRecordFailure(t);
705	+	throw t;
706		}
707		}
708
709		/**
710	<	* If arguments not equal, set status to indicate current testcase
711	<	* should fail
712	<	*/
710	>	* Just like assertEquals(x, y), but additionally recording (using
711	>	* threadRecordFailure) any AssertionFailedError thrown, so that
712	>	* the current testcase will fail.
713	>	*/
714		public void threadAssertEquals(Object x, Object y) {
715	<	if (x != y && (x == null || !x.equals(y))) {
251	<	threadFailed = true;
715	>	try {
716		assertEquals(x, y);
717	+	} catch (AssertionFailedError fail) {
718	+	threadRecordFailure(fail);
719	+	throw fail;
720	+	} catch (Throwable fail) {
721	+	threadUnexpectedException(fail);
722	+	}
723	+	}
724	+
725	+	/**
726	+	* Just like assertSame(x, y), but additionally recording (using
727	+	* threadRecordFailure) any AssertionFailedError thrown, so that
728	+	* the current testcase will fail.
729	+	*/
730	+	public void threadAssertSame(Object x, Object y) {
731	+	try {
732	+	assertSame(x, y);
733	+	} catch (AssertionFailedError fail) {
734	+	threadRecordFailure(fail);
735	+	throw fail;
736		}
737		}
738
739		/**
740	<	* threadFail with message "should throw exception"
741	<	*/
740	>	* Calls threadFail with message "should throw exception".
741	>	*/
742		public void threadShouldThrow() {
743	<	threadFailed = true;
744	<	fail("should throw exception");
743	>	threadFail("should throw exception");
744	>	}
745	>
746	>	/**
747	>	* Calls threadFail with message "should throw" + exceptionName.
748	>	*/
749	>	public void threadShouldThrow(String exceptionName) {
750	>	threadFail("should throw " + exceptionName);
751	>	}
752	>
753	>	/**
754	>	* Records the given exception using {@link #threadRecordFailure},
755	>	* then rethrows the exception, wrapping it in an
756	>	* AssertionFailedError if necessary.
757	>	*/
758	>	public void threadUnexpectedException(Throwable t) {
759	>	threadRecordFailure(t);
760	>	t.printStackTrace();
761	>	if (t instanceof RuntimeException)
762	>	throw (RuntimeException) t;
763	>	else if (t instanceof Error)
764	>	throw (Error) t;
765	>	else {
766	>	AssertionFailedError afe =
767	>	new AssertionFailedError("unexpected exception: " + t);
768	>	afe.initCause(t);
769	>	throw afe;
770	>	}
771	>	}
772	>
773	>	/**
774	>	* Delays, via Thread.sleep, for the given millisecond delay, but
775	>	* if the sleep is shorter than specified, may re-sleep or yield
776	>	* until time elapses.  Ensures that the given time, as measured
777	>	* by System.nanoTime(), has elapsed.
778	>	*/
779	>	static void delay(long millis) throws InterruptedException {
780	>	long nanos = millis * (1000 * 1000);
781	>	final long wakeupTime = System.nanoTime() + nanos;
782	>	do {
783	>	if (millis > 0L)
784	>	Thread.sleep(millis);
785	>	else // too short to sleep
786	>	Thread.yield();
787	>	nanos = wakeupTime - System.nanoTime();
788	>	millis = nanos / (1000 * 1000);
789	>	} while (nanos >= 0L);
790	>	}
791	>
792	>	/**
793	>	* Allows use of try-with-resources with per-test thread pools.
794	>	*/
795	>	class PoolCleaner implements AutoCloseable {
796	>	private final ExecutorService pool;
797	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
798	>	public void close() { joinPool(pool); }
799	>	}
800	>
801	>	/**
802	>	* An extension of PoolCleaner that has an action to release the pool.
803	>	*/
804	>	class PoolCleanerWithReleaser extends PoolCleaner {
805	>	private final Runnable releaser;
806	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
807	>	super(pool);
808	>	this.releaser = releaser;
809	>	}
810	>	public void close() {
811	>	try {
812	>	releaser.run();
813	>	} finally {
814	>	super.close();
815	>	}
816	>	}
817	>	}
818	>
819	>	PoolCleaner cleaner(ExecutorService pool) {
820	>	return new PoolCleaner(pool);
821	>	}
822	>
823	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
824	>	return new PoolCleanerWithReleaser(pool, releaser);
825	>	}
826	>
827	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
828	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
829	>	}
830	>
831	>	Runnable releaser(final CountDownLatch latch) {
832	>	return new Runnable() { public void run() {
833	>	do { latch.countDown(); }
834	>	while (latch.getCount() > 0);
835	>	}};
836		}
837
838		/**
839	<	* threadFail with message "Unexpected exception"
839	>	* Waits out termination of a thread pool or fails doing so.
840		*/
841	<	public void threadUnexpectedException() {
842	<	threadFailed = true;
843	<	fail("Unexpected exception");
841	>	void joinPool(ExecutorService pool) {
842	>	try {
843	>	pool.shutdown();
844	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
845	>	try {
846	>	threadFail("ExecutorService " + pool +
847	>	" did not terminate in a timely manner");
848	>	} finally {
849	>	// last resort, for the benefit of subsequent tests
850	>	pool.shutdownNow();
851	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
852	>	}
853	>	}
854	>	} catch (SecurityException ok) {
855	>	// Allowed in case test doesn't have privs
856	>	} catch (InterruptedException fail) {
857	>	threadFail("Unexpected InterruptedException");
858	>	}
859	>	}
860	>
861	>	/** Like Runnable, but with the freedom to throw anything */
862	>	interface Action { public void run() throws Throwable; }
863	>
864	>	/**
865	>	* Runs all the given actions in parallel, failing if any fail.
866	>	* Useful for running multiple variants of tests that are
867	>	* necessarily individually slow because they must block.
868	>	*/
869	>	void testInParallel(Action ... actions) {
870	>	ExecutorService pool = Executors.newCachedThreadPool();
871	>	try (PoolCleaner cleaner = cleaner(pool)) {
872	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
873	>	for (final Action action : actions)
874	>	futures.add(pool.submit(new CheckedRunnable() {
875	>	public void realRun() throws Throwable { action.run();}}));
876	>	for (Future<?> future : futures)
877	>	try {
878	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
879	>	} catch (ExecutionException ex) {
880	>	threadUnexpectedException(ex.getCause());
881	>	} catch (Exception ex) {
882	>	threadUnexpectedException(ex);
883	>	}
884	>	}
885	>	}
886	>
887	>	/**
888	>	* A debugging tool to print stack traces of most threads, as jstack does.
889	>	* Uninteresting threads are filtered out.
890	>	*/
891	>	static void dumpTestThreads() {
892	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
893	>	System.err.println("------ stacktrace dump start ------");
894	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
895	>	String name = info.getThreadName();
896	>	if ("Signal Dispatcher".equals(name))
897	>	continue;
898	>	if ("Reference Handler".equals(name)
899	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
900	>	continue;
901	>	if ("Finalizer".equals(name)
902	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
903	>	continue;
904	>	if ("checkForWedgedTest".equals(name))
905	>	continue;
906	>	System.err.print(info);
907	>	}
908	>	System.err.println("------ stacktrace dump end ------");
909	>	}
910	>
911	>	/**
912	>	* Checks that thread does not terminate within the default
913	>	* millisecond delay of {@code timeoutMillis()}.
914	>	*/
915	>	void assertThreadStaysAlive(Thread thread) {
916	>	assertThreadStaysAlive(thread, timeoutMillis());
917	>	}
918	>
919	>	/**
920	>	* Checks that thread does not terminate within the given millisecond delay.
921	>	*/
922	>	void assertThreadStaysAlive(Thread thread, long millis) {
923	>	try {
924	>	// No need to optimize the failing case via Thread.join.
925	>	delay(millis);
926	>	assertTrue(thread.isAlive());
927	>	} catch (InterruptedException fail) {
928	>	threadFail("Unexpected InterruptedException");
929	>	}
930		}
931
932	+	/**
933	+	* Checks that the threads do not terminate within the default
934	+	* millisecond delay of {@code timeoutMillis()}.
935	+	*/
936	+	void assertThreadsStayAlive(Thread... threads) {
937	+	assertThreadsStayAlive(timeoutMillis(), threads);
938	+	}
939
940		/**
941	<	* Wait out termination of a thread pool or fail doing so
941	>	* Checks that the threads do not terminate within the given millisecond delay.
942		*/
943	<	public void joinPool(ExecutorService exec) {
943	>	void assertThreadsStayAlive(long millis, Thread... threads) {
944		try {
945	<	exec.shutdown();
946	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
947	<	} catch(InterruptedException ie) {
948	<	fail("Unexpected exception");
945	>	// No need to optimize the failing case via Thread.join.
946	>	delay(millis);
947	>	for (Thread thread : threads)
948	>	assertTrue(thread.isAlive());
949	>	} catch (InterruptedException fail) {
950	>	threadFail("Unexpected InterruptedException");
951		}
952		}
953
954	+	/**
955	+	* Checks that future.get times out, with the default timeout of
956	+	* {@code timeoutMillis()}.
957	+	*/
958	+	void assertFutureTimesOut(Future future) {
959	+	assertFutureTimesOut(future, timeoutMillis());
960	+	}
961
962		/**
963	<	* fail with message "should throw exception"
964	<	*/
963	>	* Checks that future.get times out, with the given millisecond timeout.
964	>	*/
965	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
966	>	long startTime = System.nanoTime();
967	>	try {
968	>	future.get(timeoutMillis, MILLISECONDS);
969	>	shouldThrow();
970	>	} catch (TimeoutException success) {
971	>	} catch (Exception fail) {
972	>	threadUnexpectedException(fail);
973	>	} finally { future.cancel(true); }
974	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
975	>	}
976	>
977	>	/**
978	>	* Fails with message "should throw exception".
979	>	*/
980		public void shouldThrow() {
981		fail("Should throw exception");
982		}
983
984		/**
985	<	* fail with message "Unexpected exception"
985	>	* Fails with message "should throw " + exceptionName.
986		*/
987	<	public void unexpectedException() {
988	<	fail("Unexpected exception");
987	>	public void shouldThrow(String exceptionName) {
988	>	fail("Should throw " + exceptionName);
989		}
990
300	–
991		/**
992		* The number of elements to place in collections, arrays, etc.
993		*/
994	<	static final int SIZE = 20;
994	>	public static final int SIZE = 20;
995
996		// Some convenient Integer constants
997
998	<	static final Integer zero = new Integer(0);
999	<	static final Integer one = new Integer(1);
1000	<	static final Integer two = new Integer(2);
1001	<	static final Integer three  = new Integer(3);
1002	<	static final Integer four  = new Integer(4);
1003	<	static final Integer five  = new Integer(5);
1004	<	static final Integer six = new Integer(6);
1005	<	static final Integer seven = new Integer(7);
1006	<	static final Integer eight = new Integer(8);
1007	<	static final Integer nine = new Integer(9);
1008	<	static final Integer m1  = new Integer(-1);
1009	<	static final Integer m2  = new Integer(-2);
1010	<	static final Integer m3  = new Integer(-3);
1011	<	static final Integer m4 = new Integer(-4);
1012	<	static final Integer m5 = new Integer(-5);
1013	<	static final Integer m10 = new Integer(-10);
998	>	public static final Integer zero  = new Integer(0);
999	>	public static final Integer one   = new Integer(1);
1000	>	public static final Integer two   = new Integer(2);
1001	>	public static final Integer three = new Integer(3);
1002	>	public static final Integer four  = new Integer(4);
1003	>	public static final Integer five  = new Integer(5);
1004	>	public static final Integer six   = new Integer(6);
1005	>	public static final Integer seven = new Integer(7);
1006	>	public static final Integer eight = new Integer(8);
1007	>	public static final Integer nine  = new Integer(9);
1008	>	public static final Integer m1  = new Integer(-1);
1009	>	public static final Integer m2  = new Integer(-2);
1010	>	public static final Integer m3  = new Integer(-3);
1011	>	public static final Integer m4  = new Integer(-4);
1012	>	public static final Integer m5  = new Integer(-5);
1013	>	public static final Integer m6  = new Integer(-6);
1014	>	public static final Integer m10 = new Integer(-10);
1015	>
1016	>	/**
1017	>	* Runs Runnable r with a security policy that permits precisely
1018	>	* the specified permissions.  If there is no current security
1019	>	* manager, the runnable is run twice, both with and without a
1020	>	* security manager.  We require that any security manager permit
1021	>	* getPolicy/setPolicy.
1022	>	*/
1023	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1024	>	SecurityManager sm = System.getSecurityManager();
1025	>	if (sm == null) {
1026	>	r.run();
1027	>	}
1028	>	runWithSecurityManagerWithPermissions(r, permissions);
1029	>	}
1030	>
1031	>	/**
1032	>	* Runs Runnable r with a security policy that permits precisely
1033	>	* the specified permissions.  If there is no current security
1034	>	* manager, a temporary one is set for the duration of the
1035	>	* Runnable.  We require that any security manager permit
1036	>	* getPolicy/setPolicy.
1037	>	*/
1038	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1039	>	Permission... permissions) {
1040	>	SecurityManager sm = System.getSecurityManager();
1041	>	if (sm == null) {
1042	>	Policy savedPolicy = Policy.getPolicy();
1043	>	try {
1044	>	Policy.setPolicy(permissivePolicy());
1045	>	System.setSecurityManager(new SecurityManager());
1046	>	runWithSecurityManagerWithPermissions(r, permissions);
1047	>	} finally {
1048	>	System.setSecurityManager(null);
1049	>	Policy.setPolicy(savedPolicy);
1050	>	}
1051	>	} else {
1052	>	Policy savedPolicy = Policy.getPolicy();
1053	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1054	>	Policy.setPolicy(policy);
1055
1056	+	try {
1057	+	r.run();
1058	+	} finally {
1059	+	policy.addPermission(new SecurityPermission("setPolicy"));
1060	+	Policy.setPolicy(savedPolicy);
1061	+	}
1062	+	}
1063	+	}
1064	+
1065	+	/**
1066	+	* Runs a runnable without any permissions.
1067	+	*/
1068	+	public void runWithoutPermissions(Runnable r) {
1069	+	runWithPermissions(r);
1070	+	}
1071
1072		/**
1073		* A security policy where new permissions can be dynamically added
1074		* or all cleared.
1075		*/
1076	<	static class AdjustablePolicy extends java.security.Policy {
1076	>	public static class AdjustablePolicy extends java.security.Policy {
1077		Permissions perms = new Permissions();
1078	<	AdjustablePolicy() { }
1078	>	AdjustablePolicy(Permission... permissions) {
1079	>	for (Permission permission : permissions)
1080	>	perms.add(permission);
1081	>	}
1082		void addPermission(Permission perm) { perms.add(perm); }
1083		void clearPermissions() { perms = new Permissions(); }
1084	<	public PermissionCollection getPermissions(CodeSource cs) {
1085	<	return perms;
1086	<	}
1087	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1088	<	return perms;
1089	<	}
1090	<	public boolean implies(ProtectionDomain pd, Permission p) {
1091	<	return perms.implies(p);
1092	<	}
1093	<	public void refresh() {}
1084	>	public PermissionCollection getPermissions(CodeSource cs) {
1085	>	return perms;
1086	>	}
1087	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1088	>	return perms;
1089	>	}
1090	>	public boolean implies(ProtectionDomain pd, Permission p) {
1091	>	return perms.implies(p);
1092	>	}
1093	>	public void refresh() {}
1094	>	public String toString() {
1095	>	List<Permission> ps = new ArrayList<Permission>();
1096	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1097	>	ps.add(e.nextElement());
1098	>	return "AdjustablePolicy with permissions " + ps;
1099	>	}
1100		}
1101
1102	+	/**
1103	+	* Returns a policy containing all the permissions we ever need.
1104	+	*/
1105	+	public static Policy permissivePolicy() {
1106	+	return new AdjustablePolicy
1107	+	// Permissions j.u.c. needs directly
1108	+	(new RuntimePermission("modifyThread"),
1109	+	new RuntimePermission("getClassLoader"),
1110	+	new RuntimePermission("setContextClassLoader"),
1111	+	// Permissions needed to change permissions!
1112	+	new SecurityPermission("getPolicy"),
1113	+	new SecurityPermission("setPolicy"),
1114	+	new RuntimePermission("setSecurityManager"),
1115	+	// Permissions needed by the junit test harness
1116	+	new RuntimePermission("accessDeclaredMembers"),
1117	+	new PropertyPermission("*", "read"),
1118	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1119	+	}
1120
1121	<	// Some convenient Runnable classes
1121	>	/**
1122	>	* Sleeps until the given time has elapsed.
1123	>	* Throws AssertionFailedError if interrupted.
1124	>	*/
1125	>	void sleep(long millis) {
1126	>	try {
1127	>	delay(millis);
1128	>	} catch (InterruptedException fail) {
1129	>	AssertionFailedError afe =
1130	>	new AssertionFailedError("Unexpected InterruptedException");
1131	>	afe.initCause(fail);
1132	>	throw afe;
1133	>	}
1134	>	}
1135
1136	<	static class NoOpRunnable implements Runnable {
1137	<	public void run() {}
1136	>	/**
1137	>	* Spin-waits up to the specified number of milliseconds for the given
1138	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1139	>	*/
1140	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1141	>	long startTime = System.nanoTime();
1142	>	for (;;) {
1143	>	Thread.State s = thread.getState();
1144	>	if (s == Thread.State.BLOCKED ||
1145	>	s == Thread.State.WAITING ||
1146	>	s == Thread.State.TIMED_WAITING)
1147	>	return;
1148	>	else if (s == Thread.State.TERMINATED)
1149	>	fail("Unexpected thread termination");
1150	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1151	>	threadAssertTrue(thread.isAlive());
1152	>	return;
1153	>	}
1154	>	Thread.yield();
1155	>	}
1156		}
1157
1158	<	static class NoOpCallable implements Callable {
1159	<	public Object call() { return Boolean.TRUE; }
1158	>	/**
1159	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1160	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1161	>	*/
1162	>	void waitForThreadToEnterWaitState(Thread thread) {
1163	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1164		}
1165
1166	<	static final String TEST_STRING = "a test string";
1166	>	/**
1167	>	* Returns the number of milliseconds since time given by
1168	>	* startNanoTime, which must have been previously returned from a
1169	>	* call to {@link System#nanoTime()}.
1170	>	*/
1171	>	static long millisElapsedSince(long startNanoTime) {
1172	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1173	>	}
1174
1175	<	static class StringTask implements Callable<String> {
1176	<	public String call() { return TEST_STRING; }
1175	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1176	>	//         long startTime = System.nanoTime();
1177	>	//         try {
1178	>	//             r.run();
1179	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1180	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1181	>	//             throw new AssertionFailedError("did not return promptly");
1182	>	//     }
1183	>
1184	>	//     void assertTerminatesPromptly(Runnable r) {
1185	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1186	>	//     }
1187	>
1188	>	/**
1189	>	* Checks that timed f.get() returns the expected value, and does not
1190	>	* wait for the timeout to elapse before returning.
1191	>	*/
1192	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1193	>	long startTime = System.nanoTime();
1194	>	try {
1195	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1196	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1197	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1198	>	throw new AssertionFailedError("timed get did not return promptly");
1199		}
1200
1201	<	static class NPETask implements Callable<String> {
1202	<	public String call() { throw new NullPointerException(); }
1201	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1202	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1203		}
1204
1205	<	static class CallableOne implements Callable<Integer> {
1206	<	public Integer call() { return one; }
1205	>	/**
1206	>	* Returns a new started daemon Thread running the given runnable.
1207	>	*/
1208	>	Thread newStartedThread(Runnable runnable) {
1209	>	Thread t = new Thread(runnable);
1210	>	t.setDaemon(true);
1211	>	t.start();
1212	>	return t;
1213		}
1214
1215	<	class ShortRunnable implements Runnable {
1216	<	public void run() {
1217	<	try {
1218	<	Thread.sleep(SHORT_DELAY_MS);
1219	<	}
1220	<	catch(Exception e) {
1221	<	threadUnexpectedException();
1215	>	/**
1216	>	* Waits for the specified time (in milliseconds) for the thread
1217	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1218	>	* the thread (in the hope that it may terminate later) and fails.
1219	>	*/
1220	>	void awaitTermination(Thread t, long timeoutMillis) {
1221	>	try {
1222	>	t.join(timeoutMillis);
1223	>	} catch (InterruptedException fail) {
1224	>	threadUnexpectedException(fail);
1225	>	} finally {
1226	>	if (t.getState() != Thread.State.TERMINATED) {
1227	>	t.interrupt();
1228	>	threadFail("Test timed out");
1229		}
1230		}
1231		}
1232
1233	<	class ShortInterruptedRunnable implements Runnable {
1234	<	public void run() {
1233	>	/**
1234	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1235	>	* terminate (using {@link Thread#join(long)}), else interrupts
1236	>	* the thread (in the hope that it may terminate later) and fails.
1237	>	*/
1238	>	void awaitTermination(Thread t) {
1239	>	awaitTermination(t, LONG_DELAY_MS);
1240	>	}
1241	>
1242	>	// Some convenient Runnable classes
1243	>
1244	>	public abstract class CheckedRunnable implements Runnable {
1245	>	protected abstract void realRun() throws Throwable;
1246	>
1247	>	public final void run() {
1248		try {
1249	<	Thread.sleep(SHORT_DELAY_MS);
1250	<	threadShouldThrow();
1251	<	}
389	<	catch(InterruptedException success) {
1249	>	realRun();
1250	>	} catch (Throwable fail) {
1251	>	threadUnexpectedException(fail);
1252		}
1253		}
1254		}
1255
1256	<	class SmallRunnable implements Runnable {
1257	<	public void run() {
1256	>	public abstract class RunnableShouldThrow implements Runnable {
1257	>	protected abstract void realRun() throws Throwable;
1258	>
1259	>	final Class<?> exceptionClass;
1260	>
1261	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1262	>	this.exceptionClass = exceptionClass;
1263	>	}
1264	>
1265	>	public final void run() {
1266		try {
1267	<	Thread.sleep(SMALL_DELAY_MS);
1268	<	}
1269	<	catch(Exception e) {
1270	<	threadUnexpectedException();
1267	>	realRun();
1268	>	threadShouldThrow(exceptionClass.getSimpleName());
1269	>	} catch (Throwable t) {
1270	>	if (! exceptionClass.isInstance(t))
1271	>	threadUnexpectedException(t);
1272		}
1273		}
1274		}
1275
1276	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1277	<	public void run() {
1276	>	public abstract class ThreadShouldThrow extends Thread {
1277	>	protected abstract void realRun() throws Throwable;
1278	>
1279	>	final Class<?> exceptionClass;
1280	>
1281	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1282	>	this.exceptionClass = exceptionClass;
1283	>	}
1284	>
1285	>	public final void run() {
1286		try {
1287	<	Thread.sleep(SMALL_DELAY_MS);
1288	<	}
1289	<	catch(Exception e) {
1287	>	realRun();
1288	>	threadShouldThrow(exceptionClass.getSimpleName());
1289	>	} catch (Throwable t) {
1290	>	if (! exceptionClass.isInstance(t))
1291	>	threadUnexpectedException(t);
1292		}
1293		}
1294		}
1295
1296	<	class SmallCallable implements Callable {
1297	<	public Object call() {
1296	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1297	>	protected abstract void realRun() throws Throwable;
1298	>
1299	>	public final void run() {
1300		try {
1301	<	Thread.sleep(SMALL_DELAY_MS);
1301	>	realRun();
1302	>	threadShouldThrow("InterruptedException");
1303	>	} catch (InterruptedException success) {
1304	>	threadAssertFalse(Thread.interrupted());
1305	>	} catch (Throwable fail) {
1306	>	threadUnexpectedException(fail);
1307		}
420	–	catch(Exception e) {
421	–	threadUnexpectedException();
422	–	}
423	–	return Boolean.TRUE;
1308		}
1309		}
1310
1311	<	class SmallInterruptedRunnable implements Runnable {
1312	<	public void run() {
1311	>	public abstract class CheckedCallable<T> implements Callable<T> {
1312	>	protected abstract T realCall() throws Throwable;
1313	>
1314	>	public final T call() {
1315		try {
1316	<	Thread.sleep(SMALL_DELAY_MS);
1317	<	threadShouldThrow();
1318	<	}
1319	<	catch(InterruptedException success) {
1316	>	return realCall();
1317	>	} catch (Throwable fail) {
1318	>	threadUnexpectedException(fail);
1319	>	return null;
1320		}
1321		}
1322		}
1323
1324	+	public abstract class CheckedInterruptedCallable<T>
1325	+	implements Callable<T> {
1326	+	protected abstract T realCall() throws Throwable;
1327
1328	<	class MediumRunnable implements Runnable {
440	<	public void run() {
1328	>	public final T call() {
1329		try {
1330	<	Thread.sleep(MEDIUM_DELAY_MS);
1331	<	}
1332	<	catch(Exception e) {
1333	<	threadUnexpectedException();
1330	>	T result = realCall();
1331	>	threadShouldThrow("InterruptedException");
1332	>	return result;
1333	>	} catch (InterruptedException success) {
1334	>	threadAssertFalse(Thread.interrupted());
1335	>	} catch (Throwable fail) {
1336	>	threadUnexpectedException(fail);
1337		}
1338	+	return null;
1339		}
1340		}
1341
1342	<	class MediumInterruptedRunnable implements Runnable {
1343	<	public void run() {
1342	>	public static class NoOpRunnable implements Runnable {
1343	>	public void run() {}
1344	>	}
1345	>
1346	>	public static class NoOpCallable implements Callable {
1347	>	public Object call() { return Boolean.TRUE; }
1348	>	}
1349	>
1350	>	public static final String TEST_STRING = "a test string";
1351	>
1352	>	public static class StringTask implements Callable<String> {
1353	>	final String value;
1354	>	public StringTask() { this(TEST_STRING); }
1355	>	public StringTask(String value) { this.value = value; }
1356	>	public String call() { return value; }
1357	>	}
1358	>
1359	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1360	>	return new CheckedCallable<String>() {
1361	>	protected String realCall() {
1362	>	try {
1363	>	latch.await();
1364	>	} catch (InterruptedException quittingTime) {}
1365	>	return TEST_STRING;
1366	>	}};
1367	>	}
1368	>
1369	>	public Runnable countDowner(final CountDownLatch latch) {
1370	>	return new CheckedRunnable() {
1371	>	public void realRun() throws InterruptedException {
1372	>	latch.countDown();
1373	>	}};
1374	>	}
1375	>
1376	>	class LatchAwaiter extends CheckedRunnable {
1377	>	static final int NEW = 0;
1378	>	static final int RUNNING = 1;
1379	>	static final int DONE = 2;
1380	>	final CountDownLatch latch;
1381	>	int state = NEW;
1382	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1383	>	public void realRun() throws InterruptedException {
1384	>	state = 1;
1385	>	await(latch);
1386	>	state = 2;
1387	>	}
1388	>	}
1389	>
1390	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1391	>	return new LatchAwaiter(latch);
1392	>	}
1393	>
1394	>	public void await(CountDownLatch latch) {
1395	>	try {
1396	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1397	>	} catch (Throwable fail) {
1398	>	threadUnexpectedException(fail);
1399	>	}
1400	>	}
1401	>
1402	>	public void await(Semaphore semaphore) {
1403	>	try {
1404	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1405	>	} catch (Throwable fail) {
1406	>	threadUnexpectedException(fail);
1407	>	}
1408	>	}
1409	>
1410	>	//     /**
1411	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1412	>	//      */
1413	>	//     public void await(AtomicBoolean flag) {
1414	>	//         await(flag, LONG_DELAY_MS);
1415	>	//     }
1416	>
1417	>	//     /**
1418	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1419	>	//      */
1420	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1421	>	//         long startTime = System.nanoTime();
1422	>	//         while (!flag.get()) {
1423	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1424	>	//                 throw new AssertionFailedError("timed out");
1425	>	//             Thread.yield();
1426	>	//         }
1427	>	//     }
1428	>
1429	>	public static class NPETask implements Callable<String> {
1430	>	public String call() { throw new NullPointerException(); }
1431	>	}
1432	>
1433	>	public static class CallableOne implements Callable<Integer> {
1434	>	public Integer call() { return one; }
1435	>	}
1436	>
1437	>	public class ShortRunnable extends CheckedRunnable {
1438	>	protected void realRun() throws Throwable {
1439	>	delay(SHORT_DELAY_MS);
1440	>	}
1441	>	}
1442	>
1443	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1444	>	protected void realRun() throws InterruptedException {
1445	>	delay(SHORT_DELAY_MS);
1446	>	}
1447	>	}
1448	>
1449	>	public class SmallRunnable extends CheckedRunnable {
1450	>	protected void realRun() throws Throwable {
1451	>	delay(SMALL_DELAY_MS);
1452	>	}
1453	>	}
1454	>
1455	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1456	>	protected void realRun() {
1457		try {
1458	<	Thread.sleep(MEDIUM_DELAY_MS);
1459	<	threadShouldThrow();
455	<	}
456	<	catch(InterruptedException success) {
457	<	}
1458	>	delay(SMALL_DELAY_MS);
1459	>	} catch (InterruptedException ok) {}
1460		}
1461		}
1462
1463	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1464	<	public void run() {
1463	>	public class SmallCallable extends CheckedCallable {
1464	>	protected Object realCall() throws InterruptedException {
1465	>	delay(SMALL_DELAY_MS);
1466	>	return Boolean.TRUE;
1467	>	}
1468	>	}
1469	>
1470	>	public class MediumRunnable extends CheckedRunnable {
1471	>	protected void realRun() throws Throwable {
1472	>	delay(MEDIUM_DELAY_MS);
1473	>	}
1474	>	}
1475	>
1476	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1477	>	protected void realRun() throws InterruptedException {
1478	>	delay(MEDIUM_DELAY_MS);
1479	>	}
1480	>	}
1481	>
1482	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1483	>	return new CheckedRunnable() {
1484	>	protected void realRun() {
1485	>	try {
1486	>	delay(timeoutMillis);
1487	>	} catch (InterruptedException ok) {}
1488	>	}};
1489	>	}
1490	>
1491	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1492	>	protected void realRun() {
1493		try {
1494	<	Thread.sleep(MEDIUM_DELAY_MS);
1495	<	}
466	<	catch(InterruptedException success) {
467	<	}
1494	>	delay(MEDIUM_DELAY_MS);
1495	>	} catch (InterruptedException ok) {}
1496		}
1497		}
1498
1499	<	class LongPossiblyInterruptedRunnable implements Runnable {
1500	<	public void run() {
1499	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1500	>	protected void realRun() {
1501		try {
1502	<	Thread.sleep(LONG_DELAY_MS);
1503	<	}
476	<	catch(InterruptedException success) {
477	<	}
1502	>	delay(LONG_DELAY_MS);
1503	>	} catch (InterruptedException ok) {}
1504		}
1505		}
1506
1507		/**
1508		* For use as ThreadFactory in constructors
1509		*/
1510	<	static class SimpleThreadFactory implements ThreadFactory{
1511	<	public Thread newThread(Runnable r){
1510	>	public static class SimpleThreadFactory implements ThreadFactory {
1511	>	public Thread newThread(Runnable r) {
1512		return new Thread(r);
1513	<	}
1513	>	}
1514		}
1515
1516	<	static class TrackedShortRunnable implements Runnable {
1517	<	volatile boolean done = false;
1516	>	public interface TrackedRunnable extends Runnable {
1517	>	boolean isDone();
1518	>	}
1519	>
1520	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1521	>	return new TrackedRunnable() {
1522	>	private volatile boolean done = false;
1523	>	public boolean isDone() { return done; }
1524	>	public void run() {
1525	>	try {
1526	>	delay(timeoutMillis);
1527	>	done = true;
1528	>	} catch (InterruptedException ok) {}
1529	>	}
1530	>	};
1531	>	}
1532	>
1533	>	public static class TrackedShortRunnable implements Runnable {
1534	>	public volatile boolean done = false;
1535		public void run() {
1536		try {
1537	<	Thread.sleep(SMALL_DELAY_MS);
1537	>	delay(SHORT_DELAY_MS);
1538		done = true;
1539	<	} catch(Exception e){
497	<	}
1539	>	} catch (InterruptedException ok) {}
1540		}
1541		}
1542
1543	<	static class TrackedMediumRunnable implements Runnable {
1544	<	volatile boolean done = false;
1543	>	public static class TrackedSmallRunnable implements Runnable {
1544	>	public volatile boolean done = false;
1545		public void run() {
1546		try {
1547	<	Thread.sleep(MEDIUM_DELAY_MS);
1547	>	delay(SMALL_DELAY_MS);
1548		done = true;
1549	<	} catch(Exception e){
508	<	}
1549	>	} catch (InterruptedException ok) {}
1550		}
1551		}
1552
1553	<	static class TrackedLongRunnable implements Runnable {
1554	<	volatile boolean done = false;
1553	>	public static class TrackedMediumRunnable implements Runnable {
1554	>	public volatile boolean done = false;
1555		public void run() {
1556		try {
1557	<	Thread.sleep(LONG_DELAY_MS);
1557	>	delay(MEDIUM_DELAY_MS);
1558		done = true;
1559	<	} catch(Exception e){
1560	<	}
1559	>	} catch (InterruptedException ok) {}
1560	>	}
1561	>	}
1562	>
1563	>	public static class TrackedLongRunnable implements Runnable {
1564	>	public volatile boolean done = false;
1565	>	public void run() {
1566	>	try {
1567	>	delay(LONG_DELAY_MS);
1568	>	done = true;
1569	>	} catch (InterruptedException ok) {}
1570		}
1571		}
1572
1573	<	static class TrackedNoOpRunnable implements Runnable {
1574	<	volatile boolean done = false;
1573	>	public static class TrackedNoOpRunnable implements Runnable {
1574	>	public volatile boolean done = false;
1575		public void run() {
1576		done = true;
1577		}
1578		}
1579
1580	<	static class TrackedCallable implements Callable {
1581	<	volatile boolean done = false;
1580	>	public static class TrackedCallable implements Callable {
1581	>	public volatile boolean done = false;
1582		public Object call() {
1583		try {
1584	<	Thread.sleep(SMALL_DELAY_MS);
1584	>	delay(SMALL_DELAY_MS);
1585		done = true;
1586	<	} catch(Exception e){
537	<	}
1586	>	} catch (InterruptedException ok) {}
1587		return Boolean.TRUE;
1588		}
1589		}
1590
1591	+	/**
1592	+	* Analog of CheckedRunnable for RecursiveAction
1593	+	*/
1594	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1595	+	protected abstract void realCompute() throws Throwable;
1596	+
1597	+	@Override protected final void compute() {
1598	+	try {
1599	+	realCompute();
1600	+	} catch (Throwable fail) {
1601	+	threadUnexpectedException(fail);
1602	+	}
1603	+	}
1604	+	}
1605	+
1606	+	/**
1607	+	* Analog of CheckedCallable for RecursiveTask
1608	+	*/
1609	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1610	+	protected abstract T realCompute() throws Throwable;
1611	+
1612	+	@Override protected final T compute() {
1613	+	try {
1614	+	return realCompute();
1615	+	} catch (Throwable fail) {
1616	+	threadUnexpectedException(fail);
1617	+	return null;
1618	+	}
1619	+	}
1620	+	}
1621
1622		/**
1623		* For use as RejectedExecutionHandler in constructors
1624		*/
1625	<	static class NoOpREHandler implements RejectedExecutionHandler{
1626	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1625	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1626	>	public void rejectedExecution(Runnable r,
1627	>	ThreadPoolExecutor executor) {}
1628	>	}
1629	>
1630	>	/**
1631	>	* A CyclicBarrier that uses timed await and fails with
1632	>	* AssertionFailedErrors instead of throwing checked exceptions.
1633	>	*/
1634	>	public class CheckedBarrier extends CyclicBarrier {
1635	>	public CheckedBarrier(int parties) { super(parties); }
1636	>
1637	>	public int await() {
1638	>	try {
1639	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1640	>	} catch (TimeoutException timedOut) {
1641	>	throw new AssertionFailedError("timed out");
1642	>	} catch (Exception fail) {
1643	>	AssertionFailedError afe =
1644	>	new AssertionFailedError("Unexpected exception: " + fail);
1645	>	afe.initCause(fail);
1646	>	throw afe;
1647	>	}
1648	>	}
1649	>	}
1650	>
1651	>	void checkEmpty(BlockingQueue q) {
1652	>	try {
1653	>	assertTrue(q.isEmpty());
1654	>	assertEquals(0, q.size());
1655	>	assertNull(q.peek());
1656	>	assertNull(q.poll());
1657	>	assertNull(q.poll(0, MILLISECONDS));
1658	>	assertEquals(q.toString(), "[]");
1659	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1660	>	assertFalse(q.iterator().hasNext());
1661	>	try {
1662	>	q.element();
1663	>	shouldThrow();
1664	>	} catch (NoSuchElementException success) {}
1665	>	try {
1666	>	q.iterator().next();
1667	>	shouldThrow();
1668	>	} catch (NoSuchElementException success) {}
1669	>	try {
1670	>	q.remove();
1671	>	shouldThrow();
1672	>	} catch (NoSuchElementException success) {}
1673	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1674	>	}
1675	>
1676	>	void assertSerialEquals(Object x, Object y) {
1677	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1678	>	}
1679	>
1680	>	void assertNotSerialEquals(Object x, Object y) {
1681	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1682	>	}
1683	>
1684	>	byte[] serialBytes(Object o) {
1685	>	try {
1686	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1687	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1688	>	oos.writeObject(o);
1689	>	oos.flush();
1690	>	oos.close();
1691	>	return bos.toByteArray();
1692	>	} catch (Throwable fail) {
1693	>	threadUnexpectedException(fail);
1694	>	return new byte[0];
1695	>	}
1696	>	}
1697	>
1698	>	@SuppressWarnings("unchecked")
1699	>	<T> T serialClone(T o) {
1700	>	try {
1701	>	ObjectInputStream ois = new ObjectInputStream
1702	>	(new ByteArrayInputStream(serialBytes(o)));
1703	>	T clone = (T) ois.readObject();
1704	>	assertSame(o.getClass(), clone.getClass());
1705	>	return clone;
1706	>	} catch (Throwable fail) {
1707	>	threadUnexpectedException(fail);
1708	>	return null;
1709	>	}
1710	>	}
1711	>
1712	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1713	>	Runnable... throwingActions) {
1714	>	for (Runnable throwingAction : throwingActions) {
1715	>	boolean threw = false;
1716	>	try { throwingAction.run(); }
1717	>	catch (Throwable t) {
1718	>	threw = true;
1719	>	if (!expectedExceptionClass.isInstance(t)) {
1720	>	AssertionFailedError afe =
1721	>	new AssertionFailedError
1722	>	("Expected " + expectedExceptionClass.getName() +
1723	>	", got " + t.getClass().getName());
1724	>	afe.initCause(t);
1725	>	threadUnexpectedException(afe);
1726	>	}
1727	>	}
1728	>	if (!threw)
1729	>	shouldThrow(expectedExceptionClass.getName());
1730	>	}
1731	>	}
1732	>
1733	>	public void assertIteratorExhausted(Iterator<?> it) {
1734	>	try {
1735	>	it.next();
1736	>	shouldThrow();
1737	>	} catch (NoSuchElementException success) {}
1738	>	assertFalse(it.hasNext());
1739		}
549	–
550	–
1740		}

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