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root/jsr166/jsr166/src/test/tck/JSR166TestCase.java

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.2 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.195 by jsr166, Sat Jun 4 23:49:29 2016 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/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.*;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests
12	>	* @modules java.management
13	>	* @build *
14	>	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
15	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
16	>	*/
17
18	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
19	+	import static java.util.concurrent.TimeUnit.MINUTES;
20	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
21	+
22	+	import java.io.ByteArrayInputStream;
23	+	import java.io.ByteArrayOutputStream;
24	+	import java.io.ObjectInputStream;
25	+	import java.io.ObjectOutputStream;
26	+	import java.lang.management.ManagementFactory;
27	+	import java.lang.management.ThreadInfo;
28	+	import java.lang.management.ThreadMXBean;
29	+	import java.lang.reflect.Constructor;
30	+	import java.lang.reflect.Method;
31	+	import java.lang.reflect.Modifier;
32	+	import java.nio.file.Files;
33	+	import java.nio.file.Paths;
34	+	import java.security.CodeSource;
35	+	import java.security.Permission;
36	+	import java.security.PermissionCollection;
37	+	import java.security.Permissions;
38	+	import java.security.Policy;
39	+	import java.security.ProtectionDomain;
40	+	import java.security.SecurityPermission;
41	+	import java.util.ArrayList;
42	+	import java.util.Arrays;
43	+	import java.util.Date;
44	+	import java.util.Enumeration;
45	+	import java.util.Iterator;
46	+	import java.util.List;
47	+	import java.util.NoSuchElementException;
48	+	import java.util.PropertyPermission;
49	+	import java.util.concurrent.BlockingQueue;
50	+	import java.util.concurrent.Callable;
51	+	import java.util.concurrent.CountDownLatch;
52	+	import java.util.concurrent.CyclicBarrier;
53	+	import java.util.concurrent.ExecutionException;
54	+	import java.util.concurrent.Executors;
55	+	import java.util.concurrent.ExecutorService;
56	+	import java.util.concurrent.ForkJoinPool;
57	+	import java.util.concurrent.Future;
58	+	import java.util.concurrent.RecursiveAction;
59	+	import java.util.concurrent.RecursiveTask;
60	+	import java.util.concurrent.RejectedExecutionHandler;
61	+	import java.util.concurrent.Semaphore;
62	+	import java.util.concurrent.SynchronousQueue;
63	+	import java.util.concurrent.ThreadFactory;
64	+	import java.util.concurrent.ThreadPoolExecutor;
65	+	import java.util.concurrent.TimeoutException;
66	+	import java.util.concurrent.atomic.AtomicBoolean;
67	+	import java.util.concurrent.atomic.AtomicReference;
68	+	import java.util.regex.Matcher;
69	+	import java.util.regex.Pattern;
70	+
71	+	import junit.framework.AssertionFailedError;
72	+	import junit.framework.Test;
73	+	import junit.framework.TestCase;
74	+	import junit.framework.TestResult;
75	+	import junit.framework.TestSuite;
76
77		/**
78	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
79	<	* utility methods, as well as a simple framework for helping to make
80	<	* sure that assertions failing in generated threads cause the
81	<	* associated test that generated them to itself fail (which JUnit doe
82	<	* not otherwise arrange).  The rules for creating such tests are:
78	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
79	>	* utility methods and classes, as well as a simple framework for
80	>	* helping to make sure that assertions failing in generated threads
81	>	* cause the associated test that generated them to itself fail (which
82	>	* JUnit does not otherwise arrange).  The rules for creating such
83	>	* tests are:
84		*
85		* <ol>
86		*
87	<	* <li> All assertions in code running in generated threads must use
88	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
89	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
90	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
87	>	* <li>All assertions in code running in generated threads must use
88	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
89	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
90	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
91		* particularly recommended) for other code to use these forms too.
92		* Only the most typically used JUnit assertion methods are defined
93	<	* this way, but enough to live with.</li>
93	>	* this way, but enough to live with.
94		*
95	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
96	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
95	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
96	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
97		* them. These methods are used to clear and check for thread
98	<	* assertion failures.</li>
98	>	* assertion failures.
99		*
100	<	* <li>All delays and timeouts must use one of the constants {@link
101	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
102	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
103	<	* discriminatable from zero time, and always allows enough time for
104	<	* the small amounts of computation (creating a thread, calling a few
100	>	* <li>All delays and timeouts must use one of the constants {@code
101	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
102	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
103	>	* discriminable from zero time, and always allows enough time for the
104	>	* small amounts of computation (creating a thread, calling a few
105		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
106		* is always discriminable as larger than SHORT and smaller than
107		* MEDIUM.  And so on. These constants are set to conservative values,
108		* but even so, if there is ever any doubt, they can all be increased
109	<	* in one spot to rerun tests on slower platforms</li>
109	>	* in one spot to rerun tests on slower platforms.
110		*
111	<	* <li> All threads generated must be joined inside each test case
112	<	* method (or <tt>fail</tt> to do so) before returning from the
113	<	* method. The {@link joinPool} method can be used to do this when
114	<	* using Executors.</li>
111	>	* <li>All threads generated must be joined inside each test case
112	>	* method (or {@code fail} to do so) before returning from the
113	>	* method. The {@code joinPool} method can be used to do this when
114	>	* using Executors.
115		*
116		* </ol>
117	+	*
118	+	* <p><b>Other notes</b>
119	+	* <ul>
120	+	*
121	+	* <li>Usually, there is one testcase method per JSR166 method
122	+	* covering "normal" operation, and then as many exception-testing
123	+	* methods as there are exceptions the method can throw. Sometimes
124	+	* there are multiple tests per JSR166 method when the different
125	+	* "normal" behaviors differ significantly. And sometimes testcases
126	+	* cover multiple methods when they cannot be tested in isolation.
127	+	*
128	+	* <li>The documentation style for testcases is to provide as javadoc
129	+	* a simple sentence or two describing the property that the testcase
130	+	* method purports to test. The javadocs do not say anything about how
131	+	* the property is tested. To find out, read the code.
132	+	*
133	+	* <li>These tests are "conformance tests", and do not attempt to
134	+	* test throughput, latency, scalability or other performance factors
135	+	* (see the separate "jtreg" tests for a set intended to check these
136	+	* for the most central aspects of functionality.) So, most tests use
137	+	* the smallest sensible numbers of threads, collection sizes, etc
138	+	* needed to check basic conformance.
139	+	*
140	+	* <li>The test classes currently do not declare inclusion in
141	+	* any particular package to simplify things for people integrating
142	+	* them in TCK test suites.
143	+	*
144	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
145	+	* runs all JSR166 unit tests.
146	+	*
147	+	* </ul>
148		*/
149		public class JSR166TestCase extends TestCase {
150	+	private static final boolean useSecurityManager =
151	+	Boolean.getBoolean("jsr166.useSecurityManager");
152	+
153	+	protected static final boolean expensiveTests =
154	+	Boolean.getBoolean("jsr166.expensiveTests");
155	+
156	+	/**
157	+	* If true, also run tests that are not part of the official tck
158	+	* because they test unspecified implementation details.
159	+	*/
160	+	protected static final boolean testImplementationDetails =
161	+	Boolean.getBoolean("jsr166.testImplementationDetails");
162	+
163	+	/**
164	+	* If true, report on stdout all "slow" tests, that is, ones that
165	+	* take more than profileThreshold milliseconds to execute.
166	+	*/
167	+	private static final boolean profileTests =
168	+	Boolean.getBoolean("jsr166.profileTests");
169	+
170	+	/**
171	+	* The number of milliseconds that tests are permitted for
172	+	* execution without being reported, when profileTests is set.
173	+	*/
174	+	private static final long profileThreshold =
175	+	Long.getLong("jsr166.profileThreshold", 100);
176	+
177	+	/**
178	+	* The number of repetitions per test (for tickling rare bugs).
179	+	*/
180	+	private static final int runsPerTest =
181	+	Integer.getInteger("jsr166.runsPerTest", 1);
182	+
183	+	/**
184	+	* The number of repetitions of the test suite (for finding leaks?).
185	+	*/
186	+	private static final int suiteRuns =
187	+	Integer.getInteger("jsr166.suiteRuns", 1);
188	+
189	+	/**
190	+	* Returns the value of the system property, or NaN if not defined.
191	+	*/
192	+	private static float systemPropertyValue(String name) {
193	+	String floatString = System.getProperty(name);
194	+	if (floatString == null)
195	+	return Float.NaN;
196	+	try {
197	+	return Float.parseFloat(floatString);
198	+	} catch (NumberFormatException ex) {
199	+	throw new IllegalArgumentException(
200	+	String.format("Bad float value in system property %s=%s",
201	+	name, floatString));
202	+	}
203	+	}
204	+
205	+	/**
206	+	* The scaling factor to apply to standard delays used in tests.
207	+	* May be initialized from any of:
208	+	* - the "jsr166.delay.factor" system property
209	+	* - the "test.timeout.factor" system property (as used by jtreg)
210	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
211	+	* - hard-coded fuzz factor when using a known slowpoke VM
212	+	*/
213	+	private static final float delayFactor = delayFactor();
214	+
215	+	private static float delayFactor() {
216	+	float x;
217	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
218	+	return x;
219	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
220	+	return x;
221	+	String prop = System.getProperty("java.vm.version");
222	+	if (prop != null && prop.matches(".*debug.*"))
223	+	return 4.0f; // How much slower is fastdebug than product?!
224	+	return 1.0f;
225	+	}
226	+
227	+	public JSR166TestCase() { super(); }
228	+	public JSR166TestCase(String name) { super(name); }
229	+
230	+	/**
231	+	* A filter for tests to run, matching strings of the form
232	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
233	+	* Usefully combined with jsr166.runsPerTest.
234	+	*/
235	+	private static final Pattern methodFilter = methodFilter();
236	+
237	+	private static Pattern methodFilter() {
238	+	String regex = System.getProperty("jsr166.methodFilter");
239	+	return (regex == null) ? null : Pattern.compile(regex);
240	+	}
241	+
242	+	// Instrumentation to debug very rare, but very annoying hung test runs.
243	+	static volatile TestCase currentTestCase;
244	+	// static volatile int currentRun = 0;
245	+	static {
246	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
247	+	// Avoid spurious reports with enormous runsPerTest.
248	+	// A single test case run should never take more than 1 second.
249	+	// But let's cap it at the high end too ...
250	+	final int timeoutMinutes =
251	+	Math.min(15, Math.max(runsPerTest / 60, 1));
252	+	for (TestCase lastTestCase = currentTestCase;;) {
253	+	try { MINUTES.sleep(timeoutMinutes); }
254	+	catch (InterruptedException unexpected) { break; }
255	+	if (lastTestCase == currentTestCase) {
256	+	System.err.printf(
257	+	"Looks like we're stuck running test: %s%n",
258	+	lastTestCase);
259	+	//                     System.err.printf(
260	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
261	+	//                         lastTestCase, currentRun, runsPerTest);
262	+	//                     System.err.println("availableProcessors=" +
263	+	//                         Runtime.getRuntime().availableProcessors());
264	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
265	+	dumpTestThreads();
266	+	// one stack dump is probably enough; more would be spam
267	+	break;
268	+	}
269	+	lastTestCase = currentTestCase;
270	+	}}};
271	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
272	+	thread.setDaemon(true);
273	+	thread.start();
274	+	}
275	+
276	+	//     public static String cpuModel() {
277	+	//         try {
278	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
279	+	//                 .matcher(new String(
280	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
281	+	//             matcher.find();
282	+	//             return matcher.group(1);
283	+	//         } catch (Exception ex) { return null; }
284	+	//     }
285	+
286	+	public void runBare() throws Throwable {
287	+	currentTestCase = this;
288	+	if (methodFilter == null
289	+	|| methodFilter.matcher(toString()).find())
290	+	super.runBare();
291	+	}
292	+
293	+	protected void runTest() throws Throwable {
294	+	for (int i = 0; i < runsPerTest; i++) {
295	+	// currentRun = i;
296	+	if (profileTests)
297	+	runTestProfiled();
298	+	else
299	+	super.runTest();
300	+	}
301	+	}
302	+
303	+	protected void runTestProfiled() throws Throwable {
304	+	for (int i = 0; i < 2; i++) {
305	+	long startTime = System.nanoTime();
306	+	super.runTest();
307	+	long elapsedMillis = millisElapsedSince(startTime);
308	+	if (elapsedMillis < profileThreshold)
309	+	break;
310	+	// Never report first run of any test; treat it as a
311	+	// warmup run, notably to trigger all needed classloading,
312	+	if (i > 0)
313	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
314	+	}
315	+	}
316	+
317	+	/**
318	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
319	+	*/
320	+	public static void main(String[] args) {
321	+	main(suite(), args);
322	+	}
323	+
324	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
325	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
326	+	long runTime;
327	+	public void startTest(Test test) {}
328	+	protected void printHeader(long runTime) {
329	+	this.runTime = runTime; // defer printing for later
330	+	}
331	+	protected void printFooter(TestResult result) {
332	+	if (result.wasSuccessful()) {
333	+	getWriter().println("OK (" + result.runCount() + " tests)"
334	+	+ "  Time: " + elapsedTimeAsString(runTime));
335	+	} else {
336	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
337	+	super.printFooter(result);
338	+	}
339	+	}
340	+	}
341	+
342	+	/**
343	+	* Returns a TestRunner that doesn't bother with unnecessary
344	+	* fluff, like printing a "." for each test case.
345	+	*/
346	+	static junit.textui.TestRunner newPithyTestRunner() {
347	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
348	+	runner.setPrinter(new PithyResultPrinter(System.out));
349	+	return runner;
350	+	}
351	+
352	+	/**
353	+	* Runs all unit tests in the given test suite.
354	+	* Actual behavior influenced by jsr166.* system properties.
355	+	*/
356	+	static void main(Test suite, String[] args) {
357	+	if (useSecurityManager) {
358	+	System.err.println("Setting a permissive security manager");
359	+	Policy.setPolicy(permissivePolicy());
360	+	System.setSecurityManager(new SecurityManager());
361	+	}
362	+	for (int i = 0; i < suiteRuns; i++) {
363	+	TestResult result = newPithyTestRunner().doRun(suite);
364	+	if (!result.wasSuccessful())
365	+	System.exit(1);
366	+	System.gc();
367	+	System.runFinalization();
368	+	}
369	+	}
370	+
371	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
372	+	TestSuite suite = new TestSuite();
373	+	for (Object suiteOrClass : suiteOrClasses) {
374	+	if (suiteOrClass instanceof TestSuite)
375	+	suite.addTest((TestSuite) suiteOrClass);
376	+	else if (suiteOrClass instanceof Class)
377	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
378	+	else
379	+	throw new ClassCastException("not a test suite or class");
380	+	}
381	+	return suite;
382	+	}
383	+
384	+	public static void addNamedTestClasses(TestSuite suite,
385	+	String... testClassNames) {
386	+	for (String testClassName : testClassNames) {
387	+	try {
388	+	Class<?> testClass = Class.forName(testClassName);
389	+	Method m = testClass.getDeclaredMethod("suite",
390	+	new Class<?>[0]);
391	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
392	+	} catch (Exception e) {
393	+	throw new Error("Missing test class", e);
394	+	}
395	+	}
396	+	}
397	+
398	+	public static final double JAVA_CLASS_VERSION;
399	+	public static final String JAVA_SPECIFICATION_VERSION;
400	+	static {
401	+	try {
402	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
403	+	new java.security.PrivilegedAction<Double>() {
404	+	public Double run() {
405	+	return Double.valueOf(System.getProperty("java.class.version"));}});
406	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
407	+	new java.security.PrivilegedAction<String>() {
408	+	public String run() {
409	+	return System.getProperty("java.specification.version");}});
410	+	} catch (Throwable t) {
411	+	throw new Error(t);
412	+	}
413	+	}
414	+
415	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
416	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
417	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
418	+	public static boolean atLeastJava9() {
419	+	return JAVA_CLASS_VERSION >= 53.0
420	+	// As of 2015-09, java9 still uses 52.0 class file version
421	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
422	+	}
423	+	public static boolean atLeastJava10() {
424	+	return JAVA_CLASS_VERSION >= 54.0
425	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
426	+	}
427	+
428	+	/**
429	+	* Collects all JSR166 unit tests as one suite.
430	+	*/
431	+	public static Test suite() {
432	+	// Java7+ test classes
433	+	TestSuite suite = newTestSuite(
434	+	ForkJoinPoolTest.suite(),
435	+	ForkJoinTaskTest.suite(),
436	+	RecursiveActionTest.suite(),
437	+	RecursiveTaskTest.suite(),
438	+	LinkedTransferQueueTest.suite(),
439	+	PhaserTest.suite(),
440	+	ThreadLocalRandomTest.suite(),
441	+	AbstractExecutorServiceTest.suite(),
442	+	AbstractQueueTest.suite(),
443	+	AbstractQueuedSynchronizerTest.suite(),
444	+	AbstractQueuedLongSynchronizerTest.suite(),
445	+	ArrayBlockingQueueTest.suite(),
446	+	ArrayDequeTest.suite(),
447	+	AtomicBooleanTest.suite(),
448	+	AtomicIntegerArrayTest.suite(),
449	+	AtomicIntegerFieldUpdaterTest.suite(),
450	+	AtomicIntegerTest.suite(),
451	+	AtomicLongArrayTest.suite(),
452	+	AtomicLongFieldUpdaterTest.suite(),
453	+	AtomicLongTest.suite(),
454	+	AtomicMarkableReferenceTest.suite(),
455	+	AtomicReferenceArrayTest.suite(),
456	+	AtomicReferenceFieldUpdaterTest.suite(),
457	+	AtomicReferenceTest.suite(),
458	+	AtomicStampedReferenceTest.suite(),
459	+	ConcurrentHashMapTest.suite(),
460	+	ConcurrentLinkedDequeTest.suite(),
461	+	ConcurrentLinkedQueueTest.suite(),
462	+	ConcurrentSkipListMapTest.suite(),
463	+	ConcurrentSkipListSubMapTest.suite(),
464	+	ConcurrentSkipListSetTest.suite(),
465	+	ConcurrentSkipListSubSetTest.suite(),
466	+	CopyOnWriteArrayListTest.suite(),
467	+	CopyOnWriteArraySetTest.suite(),
468	+	CountDownLatchTest.suite(),
469	+	CyclicBarrierTest.suite(),
470	+	DelayQueueTest.suite(),
471	+	EntryTest.suite(),
472	+	ExchangerTest.suite(),
473	+	ExecutorsTest.suite(),
474	+	ExecutorCompletionServiceTest.suite(),
475	+	FutureTaskTest.suite(),
476	+	LinkedBlockingDequeTest.suite(),
477	+	LinkedBlockingQueueTest.suite(),
478	+	LinkedListTest.suite(),
479	+	LockSupportTest.suite(),
480	+	PriorityBlockingQueueTest.suite(),
481	+	PriorityQueueTest.suite(),
482	+	ReentrantLockTest.suite(),
483	+	ReentrantReadWriteLockTest.suite(),
484	+	ScheduledExecutorTest.suite(),
485	+	ScheduledExecutorSubclassTest.suite(),
486	+	SemaphoreTest.suite(),
487	+	SynchronousQueueTest.suite(),
488	+	SystemTest.suite(),
489	+	ThreadLocalTest.suite(),
490	+	ThreadPoolExecutorTest.suite(),
491	+	ThreadPoolExecutorSubclassTest.suite(),
492	+	ThreadTest.suite(),
493	+	TimeUnitTest.suite(),
494	+	TreeMapTest.suite(),
495	+	TreeSetTest.suite(),
496	+	TreeSubMapTest.suite(),
497	+	TreeSubSetTest.suite());
498	+
499	+	// Java8+ test classes
500	+	if (atLeastJava8()) {
501	+	String[] java8TestClassNames = {
502	+	"Atomic8Test",
503	+	"CompletableFutureTest",
504	+	"ConcurrentHashMap8Test",
505	+	"CountedCompleterTest",
506	+	"DoubleAccumulatorTest",
507	+	"DoubleAdderTest",
508	+	"ForkJoinPool8Test",
509	+	"ForkJoinTask8Test",
510	+	"LongAccumulatorTest",
511	+	"LongAdderTest",
512	+	"SplittableRandomTest",
513	+	"StampedLockTest",
514	+	"SubmissionPublisherTest",
515	+	"ThreadLocalRandom8Test",
516	+	"TimeUnit8Test",
517	+	};
518	+	addNamedTestClasses(suite, java8TestClassNames);
519	+	}
520	+
521	+	// Java9+ test classes
522	+	if (atLeastJava9()) {
523	+	String[] java9TestClassNames = {
524	+	"ExecutorCompletionService9Test",
525	+	};
526	+	addNamedTestClasses(suite, java9TestClassNames);
527	+	}
528	+
529	+	return suite;
530	+	}
531	+
532	+	/** Returns list of junit-style test method names in given class. */
533	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
534	+	Method[] methods = testClass.getDeclaredMethods();
535	+	ArrayList<String> names = new ArrayList<String>(methods.length);
536	+	for (Method method : methods) {
537	+	if (method.getName().startsWith("test")
538	+	&& Modifier.isPublic(method.getModifiers())
539	+	// method.getParameterCount() requires jdk8+
540	+	&& method.getParameterTypes().length == 0) {
541	+	names.add(method.getName());
542	+	}
543	+	}
544	+	return names;
545	+	}
546	+
547	+	/**
548	+	* Returns junit-style testSuite for the given test class, but
549	+	* parameterized by passing extra data to each test.
550	+	*/
551	+	public static <ExtraData> Test parameterizedTestSuite
552	+	(Class<? extends JSR166TestCase> testClass,
553	+	Class<ExtraData> dataClass,
554	+	ExtraData data) {
555	+	try {
556	+	TestSuite suite = new TestSuite();
557	+	Constructor c =
558	+	testClass.getDeclaredConstructor(dataClass, String.class);
559	+	for (String methodName : testMethodNames(testClass))
560	+	suite.addTest((Test) c.newInstance(data, methodName));
561	+	return suite;
562	+	} catch (Exception e) {
563	+	throw new Error(e);
564	+	}
565	+	}
566	+
567	+	/**
568	+	* Returns junit-style testSuite for the jdk8 extension of the
569	+	* given test class, but parameterized by passing extra data to
570	+	* each test.  Uses reflection to allow compilation in jdk7.
571	+	*/
572	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
573	+	(Class<? extends JSR166TestCase> testClass,
574	+	Class<ExtraData> dataClass,
575	+	ExtraData data) {
576	+	if (atLeastJava8()) {
577	+	String name = testClass.getName();
578	+	String name8 = name.replaceAll("Test$", "8Test");
579	+	if (name.equals(name8)) throw new Error(name);
580	+	try {
581	+	return (Test)
582	+	Class.forName(name8)
583	+	.getMethod("testSuite", new Class[] { dataClass })
584	+	.invoke(null, data);
585	+	} catch (Exception e) {
586	+	throw new Error(e);
587	+	}
588	+	} else {
589	+	return new TestSuite();
590	+	}
591	+	}
592	+
593	+	// Delays for timing-dependent tests, in milliseconds.
594
595		public static long SHORT_DELAY_MS;
596		public static long SMALL_DELAY_MS;
597		public static long MEDIUM_DELAY_MS;
598		public static long LONG_DELAY_MS;
599
61	–
600		/**
601	<	* Return the shortest timed delay. This could
602	<	* be reimplmented to use for example a Property.
603	<	*/
601	>	* Returns the shortest timed delay. This can be scaled up for
602	>	* slow machines using the jsr166.delay.factor system property,
603	>	* or via jtreg's -timeoutFactor: flag.
604	>	* http://openjdk.java.net/jtreg/command-help.html
605	>	*/
606		protected long getShortDelay() {
607	<	return 50;
607	>	return (long) (50 * delayFactor);
608		}
609
70	–
610		/**
611	<	* Set delays as multiples fo SHORT_DELAY.
611	>	* Sets delays as multiples of SHORT_DELAY.
612		*/
613	<	protected  void setDelays() {
613	>	protected void setDelays() {
614		SHORT_DELAY_MS = getShortDelay();
615	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
615	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
616		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
617	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
617	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
618	>	}
619	>
620	>	/**
621	>	* Returns a timeout in milliseconds to be used in tests that
622	>	* verify that operations block or time out.
623	>	*/
624	>	long timeoutMillis() {
625	>	return SHORT_DELAY_MS / 4;
626		}
627
628		/**
629	<	* Flag set true if any threadAssert methods fail
629	>	* Returns a new Date instance representing a time at least
630	>	* delayMillis milliseconds in the future.
631		*/
632	<	protected volatile boolean threadFailed;
632	>	Date delayedDate(long delayMillis) {
633	>	// Add 1 because currentTimeMillis is known to round into the past.
634	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
635	>	}
636
637		/**
638	<	* Initialize test to indicat that no thread assertions have failed
638	>	* The first exception encountered if any threadAssertXXX method fails.
639		*/
640	<	public void setUp() {
640	>	private final AtomicReference<Throwable> threadFailure
641	>	= new AtomicReference<Throwable>(null);
642	>
643	>	/**
644	>	* Records an exception so that it can be rethrown later in the test
645	>	* harness thread, triggering a test case failure.  Only the first
646	>	* failure is recorded; subsequent calls to this method from within
647	>	* the same test have no effect.
648	>	*/
649	>	public void threadRecordFailure(Throwable t) {
650	>	System.err.println(t);
651	>	dumpTestThreads();
652	>	threadFailure.compareAndSet(null, t);
653	>	}
654	>
655	>	public void setUp() {
656		setDelays();
657	<	threadFailed = false;
657	>	}
658	>
659	>	void tearDownFail(String format, Object... args) {
660	>	String msg = toString() + ": " + String.format(format, args);
661	>	System.err.println(msg);
662	>	dumpTestThreads();
663	>	throw new AssertionFailedError(msg);
664	>	}
665	>
666	>	/**
667	>	* Extra checks that get done for all test cases.
668	>	*
669	>	* Triggers test case failure if any thread assertions have failed,
670	>	* by rethrowing, in the test harness thread, any exception recorded
671	>	* earlier by threadRecordFailure.
672	>	*
673	>	* Triggers test case failure if interrupt status is set in the main thread.
674	>	*/
675	>	public void tearDown() throws Exception {
676	>	Throwable t = threadFailure.getAndSet(null);
677	>	if (t != null) {
678	>	if (t instanceof Error)
679	>	throw (Error) t;
680	>	else if (t instanceof RuntimeException)
681	>	throw (RuntimeException) t;
682	>	else if (t instanceof Exception)
683	>	throw (Exception) t;
684	>	else {
685	>	AssertionFailedError afe =
686	>	new AssertionFailedError(t.toString());
687	>	afe.initCause(t);
688	>	throw afe;
689	>	}
690	>	}
691	>
692	>	if (Thread.interrupted())
693	>	tearDownFail("interrupt status set in main thread");
694	>
695	>	checkForkJoinPoolThreadLeaks();
696		}
697
698		/**
699	<	* Trigger test case failure if any thread assertions have failed
699	>	* Finds missing PoolCleaners
700		*/
701	<	public void tearDown() {
702	<	assertFalse(threadFailed);
701	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
702	>	Thread[] survivors = new Thread[7];
703	>	int count = Thread.enumerate(survivors);
704	>	for (int i = 0; i < count; i++) {
705	>	Thread thread = survivors[i];
706	>	String name = thread.getName();
707	>	if (name.startsWith("ForkJoinPool-")) {
708	>	// give thread some time to terminate
709	>	thread.join(LONG_DELAY_MS);
710	>	if (thread.isAlive())
711	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
712	>	thread);
713	>	}
714	>	}
715	>
716	>	if (!ForkJoinPool.commonPool()
717	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
718	>	tearDownFail("ForkJoin common pool thread stuck");
719		}
720
721	+	/**
722	+	* Just like fail(reason), but additionally recording (using
723	+	* threadRecordFailure) any AssertionFailedError thrown, so that
724	+	* the current testcase will fail.
725	+	*/
726		public void threadFail(String reason) {
727	<	threadFailed = true;
728	<	fail(reason);
727	>	try {
728	>	fail(reason);
729	>	} catch (AssertionFailedError t) {
730	>	threadRecordFailure(t);
731	>	throw t;
732	>	}
733		}
734
735	+	/**
736	+	* Just like assertTrue(b), but additionally recording (using
737	+	* threadRecordFailure) any AssertionFailedError thrown, so that
738	+	* the current testcase will fail.
739	+	*/
740		public void threadAssertTrue(boolean b) {
741	<	if (!b) {
108	<	threadFailed = true;
741	>	try {
742		assertTrue(b);
743	+	} catch (AssertionFailedError t) {
744	+	threadRecordFailure(t);
745	+	throw t;
746		}
747		}
748	+
749	+	/**
750	+	* Just like assertFalse(b), but additionally recording (using
751	+	* threadRecordFailure) any AssertionFailedError thrown, so that
752	+	* the current testcase will fail.
753	+	*/
754		public void threadAssertFalse(boolean b) {
755	<	if (b) {
114	<	threadFailed = true;
755	>	try {
756		assertFalse(b);
757	+	} catch (AssertionFailedError t) {
758	+	threadRecordFailure(t);
759	+	throw t;
760		}
761		}
762	+
763	+	/**
764	+	* Just like assertNull(x), but additionally recording (using
765	+	* threadRecordFailure) any AssertionFailedError thrown, so that
766	+	* the current testcase will fail.
767	+	*/
768		public void threadAssertNull(Object x) {
769	<	if (x != null) {
120	<	threadFailed = true;
769	>	try {
770		assertNull(x);
771	+	} catch (AssertionFailedError t) {
772	+	threadRecordFailure(t);
773	+	throw t;
774		}
775		}
776	+
777	+	/**
778	+	* Just like assertEquals(x, y), but additionally recording (using
779	+	* threadRecordFailure) any AssertionFailedError thrown, so that
780	+	* the current testcase will fail.
781	+	*/
782		public void threadAssertEquals(long x, long y) {
783	<	if (x != y) {
126	<	threadFailed = true;
783	>	try {
784		assertEquals(x, y);
785	+	} catch (AssertionFailedError t) {
786	+	threadRecordFailure(t);
787	+	throw t;
788		}
789		}
790	+
791	+	/**
792	+	* Just like assertEquals(x, y), but additionally recording (using
793	+	* threadRecordFailure) any AssertionFailedError thrown, so that
794	+	* the current testcase will fail.
795	+	*/
796		public void threadAssertEquals(Object x, Object y) {
797	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
797	>	try {
798		assertEquals(x, y);
799	+	} catch (AssertionFailedError fail) {
800	+	threadRecordFailure(fail);
801	+	throw fail;
802	+	} catch (Throwable fail) {
803	+	threadUnexpectedException(fail);
804	+	}
805	+	}
806	+
807	+	/**
808	+	* Just like assertSame(x, y), but additionally recording (using
809	+	* threadRecordFailure) any AssertionFailedError thrown, so that
810	+	* the current testcase will fail.
811	+	*/
812	+	public void threadAssertSame(Object x, Object y) {
813	+	try {
814	+	assertSame(x, y);
815	+	} catch (AssertionFailedError fail) {
816	+	threadRecordFailure(fail);
817	+	throw fail;
818	+	}
819	+	}
820	+
821	+	/**
822	+	* Calls threadFail with message "should throw exception".
823	+	*/
824	+	public void threadShouldThrow() {
825	+	threadFail("should throw exception");
826	+	}
827	+
828	+	/**
829	+	* Calls threadFail with message "should throw" + exceptionName.
830	+	*/
831	+	public void threadShouldThrow(String exceptionName) {
832	+	threadFail("should throw " + exceptionName);
833	+	}
834	+
835	+	/**
836	+	* Records the given exception using {@link #threadRecordFailure},
837	+	* then rethrows the exception, wrapping it in an
838	+	* AssertionFailedError if necessary.
839	+	*/
840	+	public void threadUnexpectedException(Throwable t) {
841	+	threadRecordFailure(t);
842	+	t.printStackTrace();
843	+	if (t instanceof RuntimeException)
844	+	throw (RuntimeException) t;
845	+	else if (t instanceof Error)
846	+	throw (Error) t;
847	+	else {
848	+	AssertionFailedError afe =
849	+	new AssertionFailedError("unexpected exception: " + t);
850	+	afe.initCause(t);
851	+	throw afe;
852	+	}
853	+	}
854	+
855	+	/**
856	+	* Delays, via Thread.sleep, for the given millisecond delay, but
857	+	* if the sleep is shorter than specified, may re-sleep or yield
858	+	* until time elapses.  Ensures that the given time, as measured
859	+	* by System.nanoTime(), has elapsed.
860	+	*/
861	+	static void delay(long millis) throws InterruptedException {
862	+	long nanos = millis * (1000 * 1000);
863	+	final long wakeupTime = System.nanoTime() + nanos;
864	+	do {
865	+	if (millis > 0L)
866	+	Thread.sleep(millis);
867	+	else // too short to sleep
868	+	Thread.yield();
869	+	nanos = wakeupTime - System.nanoTime();
870	+	millis = nanos / (1000 * 1000);
871	+	} while (nanos >= 0L);
872	+	}
873	+
874	+	/**
875	+	* Allows use of try-with-resources with per-test thread pools.
876	+	*/
877	+	class PoolCleaner implements AutoCloseable {
878	+	private final ExecutorService pool;
879	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
880	+	public void close() { joinPool(pool); }
881	+	}
882	+
883	+	/**
884	+	* An extension of PoolCleaner that has an action to release the pool.
885	+	*/
886	+	class PoolCleanerWithReleaser extends PoolCleaner {
887	+	private final Runnable releaser;
888	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
889	+	super(pool);
890	+	this.releaser = releaser;
891	+	}
892	+	public void close() {
893	+	try {
894	+	releaser.run();
895	+	} finally {
896	+	super.close();
897	+	}
898		}
899		}
900
901	+	PoolCleaner cleaner(ExecutorService pool) {
902	+	return new PoolCleaner(pool);
903	+	}
904	+
905	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
906	+	return new PoolCleanerWithReleaser(pool, releaser);
907	+	}
908	+
909	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
910	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
911	+	}
912	+
913	+	Runnable releaser(final CountDownLatch latch) {
914	+	return new Runnable() { public void run() {
915	+	do { latch.countDown(); }
916	+	while (latch.getCount() > 0);
917	+	}};
918	+	}
919	+
920	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
921	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
922	+	}
923	+
924	+	Runnable releaser(final AtomicBoolean flag) {
925	+	return new Runnable() { public void run() { flag.set(true); }};
926	+	}
927	+
928		/**
929	<	* Wait out termination of a thread pool or fail doing so
929	>	* Waits out termination of a thread pool or fails doing so.
930		*/
931	<	public void joinPool(ExecutorService exec) {
931	>	void joinPool(ExecutorService pool) {
932		try {
933	<	exec.shutdown();
934	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
935	<	} catch(InterruptedException ie) {
936	<	fail("unexpected exception");
933	>	pool.shutdown();
934	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
935	>	try {
936	>	threadFail("ExecutorService " + pool +
937	>	" did not terminate in a timely manner");
938	>	} finally {
939	>	// last resort, for the benefit of subsequent tests
940	>	pool.shutdownNow();
941	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
942	>	}
943	>	}
944	>	} catch (SecurityException ok) {
945	>	// Allowed in case test doesn't have privs
946	>	} catch (InterruptedException fail) {
947	>	threadFail("Unexpected InterruptedException");
948		}
949		}
950
951	+	/** Like Runnable, but with the freedom to throw anything */
952	+	interface Action { public void run() throws Throwable; }
953	+
954	+	/**
955	+	* Runs all the given actions in parallel, failing if any fail.
956	+	* Useful for running multiple variants of tests that are
957	+	* necessarily individually slow because they must block.
958	+	*/
959	+	void testInParallel(Action ... actions) {
960	+	ExecutorService pool = Executors.newCachedThreadPool();
961	+	try (PoolCleaner cleaner = cleaner(pool)) {
962	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
963	+	for (final Action action : actions)
964	+	futures.add(pool.submit(new CheckedRunnable() {
965	+	public void realRun() throws Throwable { action.run();}}));
966	+	for (Future<?> future : futures)
967	+	try {
968	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
969	+	} catch (ExecutionException ex) {
970	+	threadUnexpectedException(ex.getCause());
971	+	} catch (Exception ex) {
972	+	threadUnexpectedException(ex);
973	+	}
974	+	}
975	+	}
976	+
977	+	/**
978	+	* A debugging tool to print stack traces of most threads, as jstack does.
979	+	* Uninteresting threads are filtered out.
980	+	*/
981	+	static void dumpTestThreads() {
982	+	SecurityManager sm = System.getSecurityManager();
983	+	if (sm != null) {
984	+	try {
985	+	System.setSecurityManager(null);
986	+	} catch (SecurityException giveUp) {
987	+	return;
988	+	}
989	+	}
990	+
991	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
992	+	System.err.println("------ stacktrace dump start ------");
993	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
994	+	String name = info.getThreadName();
995	+	if ("Signal Dispatcher".equals(name))
996	+	continue;
997	+	if ("Reference Handler".equals(name)
998	+	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
999	+	continue;
1000	+	if ("Finalizer".equals(name)
1001	+	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
1002	+	continue;
1003	+	if ("checkForWedgedTest".equals(name))
1004	+	continue;
1005	+	System.err.print(info);
1006	+	}
1007	+	System.err.println("------ stacktrace dump end ------");
1008	+
1009	+	if (sm != null) System.setSecurityManager(sm);
1010	+	}
1011	+
1012	+	/**
1013	+	* Checks that thread does not terminate within the default
1014	+	* millisecond delay of {@code timeoutMillis()}.
1015	+	*/
1016	+	void assertThreadStaysAlive(Thread thread) {
1017	+	assertThreadStaysAlive(thread, timeoutMillis());
1018	+	}
1019	+
1020	+	/**
1021	+	* Checks that thread does not terminate within the given millisecond delay.
1022	+	*/
1023	+	void assertThreadStaysAlive(Thread thread, long millis) {
1024	+	try {
1025	+	// No need to optimize the failing case via Thread.join.
1026	+	delay(millis);
1027	+	assertTrue(thread.isAlive());
1028	+	} catch (InterruptedException fail) {
1029	+	threadFail("Unexpected InterruptedException");
1030	+	}
1031	+	}
1032	+
1033	+	/**
1034	+	* Checks that the threads do not terminate within the default
1035	+	* millisecond delay of {@code timeoutMillis()}.
1036	+	*/
1037	+	void assertThreadsStayAlive(Thread... threads) {
1038	+	assertThreadsStayAlive(timeoutMillis(), threads);
1039	+	}
1040	+
1041	+	/**
1042	+	* Checks that the threads do not terminate within the given millisecond delay.
1043	+	*/
1044	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1045	+	try {
1046	+	// No need to optimize the failing case via Thread.join.
1047	+	delay(millis);
1048	+	for (Thread thread : threads)
1049	+	assertTrue(thread.isAlive());
1050	+	} catch (InterruptedException fail) {
1051	+	threadFail("Unexpected InterruptedException");
1052	+	}
1053	+	}
1054	+
1055	+	/**
1056	+	* Checks that future.get times out, with the default timeout of
1057	+	* {@code timeoutMillis()}.
1058	+	*/
1059	+	void assertFutureTimesOut(Future future) {
1060	+	assertFutureTimesOut(future, timeoutMillis());
1061	+	}
1062	+
1063	+	/**
1064	+	* Checks that future.get times out, with the given millisecond timeout.
1065	+	*/
1066	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1067	+	long startTime = System.nanoTime();
1068	+	try {
1069	+	future.get(timeoutMillis, MILLISECONDS);
1070	+	shouldThrow();
1071	+	} catch (TimeoutException success) {
1072	+	} catch (Exception fail) {
1073	+	threadUnexpectedException(fail);
1074	+	} finally { future.cancel(true); }
1075	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1076	+	}
1077	+
1078	+	/**
1079	+	* Fails with message "should throw exception".
1080	+	*/
1081	+	public void shouldThrow() {
1082	+	fail("Should throw exception");
1083	+	}
1084
1085	+	/**
1086	+	* Fails with message "should throw " + exceptionName.
1087	+	*/
1088	+	public void shouldThrow(String exceptionName) {
1089	+	fail("Should throw " + exceptionName);
1090	+	}
1091
1092		/**
1093		* The number of elements to place in collections, arrays, etc.
#	Line 155 | Line 1096 | public class JSR166TestCase extends Test
1096
1097		// Some convenient Integer constants
1098
1099	<	public static final Integer zero = new Integer(0);
1100	<	public static final Integer one = new Integer(1);
1101	<	public static final Integer two = new Integer(2);
1102	<	public static final Integer three  = new Integer(3);
1099	>	public static final Integer zero  = new Integer(0);
1100	>	public static final Integer one   = new Integer(1);
1101	>	public static final Integer two   = new Integer(2);
1102	>	public static final Integer three = new Integer(3);
1103		public static final Integer four  = new Integer(4);
1104		public static final Integer five  = new Integer(5);
1105	<	public static final Integer six = new Integer(6);
1105	>	public static final Integer six   = new Integer(6);
1106		public static final Integer seven = new Integer(7);
1107		public static final Integer eight = new Integer(8);
1108	<	public static final Integer nine = new Integer(9);
1108	>	public static final Integer nine  = new Integer(9);
1109		public static final Integer m1  = new Integer(-1);
1110		public static final Integer m2  = new Integer(-2);
1111		public static final Integer m3  = new Integer(-3);
1112	<	public static final Integer m4 = new Integer(-4);
1113	<	public static final Integer m5 = new Integer(-5);
1112	>	public static final Integer m4  = new Integer(-4);
1113	>	public static final Integer m5  = new Integer(-5);
1114	>	public static final Integer m6  = new Integer(-6);
1115		public static final Integer m10 = new Integer(-10);
1116
1117	+	/**
1118	+	* Runs Runnable r with a security policy that permits precisely
1119	+	* the specified permissions.  If there is no current security
1120	+	* manager, the runnable is run twice, both with and without a
1121	+	* security manager.  We require that any security manager permit
1122	+	* getPolicy/setPolicy.
1123	+	*/
1124	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1125	+	SecurityManager sm = System.getSecurityManager();
1126	+	if (sm == null) {
1127	+	r.run();
1128	+	}
1129	+	runWithSecurityManagerWithPermissions(r, permissions);
1130	+	}
1131
1132	<	// Some convenient Runnable classes
1132	>	/**
1133	>	* Runs Runnable r with a security policy that permits precisely
1134	>	* the specified permissions.  If there is no current security
1135	>	* manager, a temporary one is set for the duration of the
1136	>	* Runnable.  We require that any security manager permit
1137	>	* getPolicy/setPolicy.
1138	>	*/
1139	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1140	>	Permission... permissions) {
1141	>	SecurityManager sm = System.getSecurityManager();
1142	>	if (sm == null) {
1143	>	Policy savedPolicy = Policy.getPolicy();
1144	>	try {
1145	>	Policy.setPolicy(permissivePolicy());
1146	>	System.setSecurityManager(new SecurityManager());
1147	>	runWithSecurityManagerWithPermissions(r, permissions);
1148	>	} finally {
1149	>	System.setSecurityManager(null);
1150	>	Policy.setPolicy(savedPolicy);
1151	>	}
1152	>	} else {
1153	>	Policy savedPolicy = Policy.getPolicy();
1154	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1155	>	Policy.setPolicy(policy);
1156
1157	<	public static class NoOpRunnable implements Runnable {
1158	<	public void run() {}
1157	>	try {
1158	>	r.run();
1159	>	} finally {
1160	>	policy.addPermission(new SecurityPermission("setPolicy"));
1161	>	Policy.setPolicy(savedPolicy);
1162	>	}
1163	>	}
1164		}
1165
1166	<	public static class NoOpCallable implements Callable {
1167	<	public Object call() { return Boolean.TRUE; }
1166	>	/**
1167	>	* Runs a runnable without any permissions.
1168	>	*/
1169	>	public void runWithoutPermissions(Runnable r) {
1170	>	runWithPermissions(r);
1171		}
1172
1173	<	public class ShortRunnable implements Runnable {
1174	<	public void run() {
1175	<	try {
1176	<	Thread.sleep(SHORT_DELAY_MS);
1173	>	/**
1174	>	* A security policy where new permissions can be dynamically added
1175	>	* or all cleared.
1176	>	*/
1177	>	public static class AdjustablePolicy extends java.security.Policy {
1178	>	Permissions perms = new Permissions();
1179	>	AdjustablePolicy(Permission... permissions) {
1180	>	for (Permission permission : permissions)
1181	>	perms.add(permission);
1182	>	}
1183	>	void addPermission(Permission perm) { perms.add(perm); }
1184	>	void clearPermissions() { perms = new Permissions(); }
1185	>	public PermissionCollection getPermissions(CodeSource cs) {
1186	>	return perms;
1187	>	}
1188	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1189	>	return perms;
1190	>	}
1191	>	public boolean implies(ProtectionDomain pd, Permission p) {
1192	>	return perms.implies(p);
1193	>	}
1194	>	public void refresh() {}
1195	>	public String toString() {
1196	>	List<Permission> ps = new ArrayList<Permission>();
1197	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1198	>	ps.add(e.nextElement());
1199	>	return "AdjustablePolicy with permissions " + ps;
1200	>	}
1201	>	}
1202	>
1203	>	/**
1204	>	* Returns a policy containing all the permissions we ever need.
1205	>	*/
1206	>	public static Policy permissivePolicy() {
1207	>	return new AdjustablePolicy
1208	>	// Permissions j.u.c. needs directly
1209	>	(new RuntimePermission("modifyThread"),
1210	>	new RuntimePermission("getClassLoader"),
1211	>	new RuntimePermission("setContextClassLoader"),
1212	>	// Permissions needed to change permissions!
1213	>	new SecurityPermission("getPolicy"),
1214	>	new SecurityPermission("setPolicy"),
1215	>	new RuntimePermission("setSecurityManager"),
1216	>	// Permissions needed by the junit test harness
1217	>	new RuntimePermission("accessDeclaredMembers"),
1218	>	new PropertyPermission("*", "read"),
1219	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1220	>	}
1221	>
1222	>	/**
1223	>	* Sleeps until the given time has elapsed.
1224	>	* Throws AssertionFailedError if interrupted.
1225	>	*/
1226	>	void sleep(long millis) {
1227	>	try {
1228	>	delay(millis);
1229	>	} catch (InterruptedException fail) {
1230	>	AssertionFailedError afe =
1231	>	new AssertionFailedError("Unexpected InterruptedException");
1232	>	afe.initCause(fail);
1233	>	throw afe;
1234	>	}
1235	>	}
1236	>
1237	>	/**
1238	>	* Spin-waits up to the specified number of milliseconds for the given
1239	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1240	>	*/
1241	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1242	>	long startTime = System.nanoTime();
1243	>	for (;;) {
1244	>	Thread.State s = thread.getState();
1245	>	if (s == Thread.State.BLOCKED ||
1246	>	s == Thread.State.WAITING ||
1247	>	s == Thread.State.TIMED_WAITING)
1248	>	return;
1249	>	else if (s == Thread.State.TERMINATED)
1250	>	fail("Unexpected thread termination");
1251	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1252	>	threadAssertTrue(thread.isAlive());
1253	>	return;
1254		}
1255	<	catch(Exception e) {
1256	<	threadFail("unexpectedException");
1255	>	Thread.yield();
1256	>	}
1257	>	}
1258	>
1259	>	/**
1260	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1261	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1262	>	*/
1263	>	void waitForThreadToEnterWaitState(Thread thread) {
1264	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1265	>	}
1266	>
1267	>	/**
1268	>	* Returns the number of milliseconds since time given by
1269	>	* startNanoTime, which must have been previously returned from a
1270	>	* call to {@link System#nanoTime()}.
1271	>	*/
1272	>	static long millisElapsedSince(long startNanoTime) {
1273	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1274	>	}
1275	>
1276	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1277	>	//         long startTime = System.nanoTime();
1278	>	//         try {
1279	>	//             r.run();
1280	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1281	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1282	>	//             throw new AssertionFailedError("did not return promptly");
1283	>	//     }
1284	>
1285	>	//     void assertTerminatesPromptly(Runnable r) {
1286	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1287	>	//     }
1288	>
1289	>	/**
1290	>	* Checks that timed f.get() returns the expected value, and does not
1291	>	* wait for the timeout to elapse before returning.
1292	>	*/
1293	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1294	>	long startTime = System.nanoTime();
1295	>	try {
1296	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1297	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1298	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1299	>	throw new AssertionFailedError("timed get did not return promptly");
1300	>	}
1301	>
1302	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1303	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1304	>	}
1305	>
1306	>	/**
1307	>	* Returns a new started daemon Thread running the given runnable.
1308	>	*/
1309	>	Thread newStartedThread(Runnable runnable) {
1310	>	Thread t = new Thread(runnable);
1311	>	t.setDaemon(true);
1312	>	t.start();
1313	>	return t;
1314	>	}
1315	>
1316	>	/**
1317	>	* Waits for the specified time (in milliseconds) for the thread
1318	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1319	>	* the thread (in the hope that it may terminate later) and fails.
1320	>	*/
1321	>	void awaitTermination(Thread t, long timeoutMillis) {
1322	>	try {
1323	>	t.join(timeoutMillis);
1324	>	} catch (InterruptedException fail) {
1325	>	threadUnexpectedException(fail);
1326	>	} finally {
1327	>	if (t.getState() != Thread.State.TERMINATED) {
1328	>	t.interrupt();
1329	>	threadFail("timed out waiting for thread to terminate");
1330		}
1331		}
1332		}
1333
1334	<	public class ShortInterruptedRunnable implements Runnable {
1335	<	public void run() {
1334	>	/**
1335	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1336	>	* terminate (using {@link Thread#join(long)}), else interrupts
1337	>	* the thread (in the hope that it may terminate later) and fails.
1338	>	*/
1339	>	void awaitTermination(Thread t) {
1340	>	awaitTermination(t, LONG_DELAY_MS);
1341	>	}
1342	>
1343	>	// Some convenient Runnable classes
1344	>
1345	>	public abstract class CheckedRunnable implements Runnable {
1346	>	protected abstract void realRun() throws Throwable;
1347	>
1348	>	public final void run() {
1349		try {
1350	<	Thread.sleep(SHORT_DELAY_MS);
1351	<	threadFail("should throw IE");
1350	>	realRun();
1351	>	} catch (Throwable fail) {
1352	>	threadUnexpectedException(fail);
1353		}
1354	<	catch(InterruptedException success) {
1354	>	}
1355	>	}
1356	>
1357	>	public abstract class RunnableShouldThrow implements Runnable {
1358	>	protected abstract void realRun() throws Throwable;
1359	>
1360	>	final Class<?> exceptionClass;
1361	>
1362	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1363	>	this.exceptionClass = exceptionClass;
1364	>	}
1365	>
1366	>	public final void run() {
1367	>	try {
1368	>	realRun();
1369	>	threadShouldThrow(exceptionClass.getSimpleName());
1370	>	} catch (Throwable t) {
1371	>	if (! exceptionClass.isInstance(t))
1372	>	threadUnexpectedException(t);
1373		}
1374		}
1375		}
1376
1377	<	public class SmallRunnable implements Runnable {
1378	<	public void run() {
1377	>	public abstract class ThreadShouldThrow extends Thread {
1378	>	protected abstract void realRun() throws Throwable;
1379	>
1380	>	final Class<?> exceptionClass;
1381	>
1382	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1383	>	this.exceptionClass = exceptionClass;
1384	>	}
1385	>
1386	>	public final void run() {
1387		try {
1388	<	Thread.sleep(SMALL_DELAY_MS);
1388	>	realRun();
1389	>	threadShouldThrow(exceptionClass.getSimpleName());
1390	>	} catch (Throwable t) {
1391	>	if (! exceptionClass.isInstance(t))
1392	>	threadUnexpectedException(t);
1393		}
1394	<	catch(Exception e) {
1395	<	threadFail("unexpectedException");
1394	>	}
1395	>	}
1396	>
1397	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1398	>	protected abstract void realRun() throws Throwable;
1399	>
1400	>	public final void run() {
1401	>	try {
1402	>	realRun();
1403	>	threadShouldThrow("InterruptedException");
1404	>	} catch (InterruptedException success) {
1405	>	threadAssertFalse(Thread.interrupted());
1406	>	} catch (Throwable fail) {
1407	>	threadUnexpectedException(fail);
1408		}
1409		}
1410		}
1411
1412	<	public class SmallCallable implements Callable {
1413	<	public Object call() {
1412	>	public abstract class CheckedCallable<T> implements Callable<T> {
1413	>	protected abstract T realCall() throws Throwable;
1414	>
1415	>	public final T call() {
1416		try {
1417	<	Thread.sleep(SMALL_DELAY_MS);
1417	>	return realCall();
1418	>	} catch (Throwable fail) {
1419	>	threadUnexpectedException(fail);
1420	>	return null;
1421		}
1422	<	catch(Exception e) {
1423	<	threadFail("unexpectedException");
1422	>	}
1423	>	}
1424	>
1425	>	public abstract class CheckedInterruptedCallable<T>
1426	>	implements Callable<T> {
1427	>	protected abstract T realCall() throws Throwable;
1428	>
1429	>	public final T call() {
1430	>	try {
1431	>	T result = realCall();
1432	>	threadShouldThrow("InterruptedException");
1433	>	return result;
1434	>	} catch (InterruptedException success) {
1435	>	threadAssertFalse(Thread.interrupted());
1436	>	} catch (Throwable fail) {
1437	>	threadUnexpectedException(fail);
1438		}
1439	+	return null;
1440	+	}
1441	+	}
1442	+
1443	+	public static class NoOpRunnable implements Runnable {
1444	+	public void run() {}
1445	+	}
1446	+
1447	+	public static class NoOpCallable implements Callable {
1448	+	public Object call() { return Boolean.TRUE; }
1449	+	}
1450	+
1451	+	public static final String TEST_STRING = "a test string";
1452	+
1453	+	public static class StringTask implements Callable<String> {
1454	+	final String value;
1455	+	public StringTask() { this(TEST_STRING); }
1456	+	public StringTask(String value) { this.value = value; }
1457	+	public String call() { return value; }
1458	+	}
1459	+
1460	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1461	+	return new CheckedCallable<String>() {
1462	+	protected String realCall() {
1463	+	try {
1464	+	latch.await();
1465	+	} catch (InterruptedException quittingTime) {}
1466	+	return TEST_STRING;
1467	+	}};
1468	+	}
1469	+
1470	+	public Runnable countDowner(final CountDownLatch latch) {
1471	+	return new CheckedRunnable() {
1472	+	public void realRun() throws InterruptedException {
1473	+	latch.countDown();
1474	+	}};
1475	+	}
1476	+
1477	+	class LatchAwaiter extends CheckedRunnable {
1478	+	static final int NEW = 0;
1479	+	static final int RUNNING = 1;
1480	+	static final int DONE = 2;
1481	+	final CountDownLatch latch;
1482	+	int state = NEW;
1483	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1484	+	public void realRun() throws InterruptedException {
1485	+	state = 1;
1486	+	await(latch);
1487	+	state = 2;
1488	+	}
1489	+	}
1490	+
1491	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1492	+	return new LatchAwaiter(latch);
1493	+	}
1494	+
1495	+	public void await(CountDownLatch latch, long timeoutMillis) {
1496	+	try {
1497	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1498	+	fail("timed out waiting for CountDownLatch for "
1499	+	+ (timeoutMillis/1000) + " sec");
1500	+	} catch (Throwable fail) {
1501	+	threadUnexpectedException(fail);
1502	+	}
1503	+	}
1504	+
1505	+	public void await(CountDownLatch latch) {
1506	+	await(latch, LONG_DELAY_MS);
1507	+	}
1508	+
1509	+	public void await(Semaphore semaphore) {
1510	+	try {
1511	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1512	+	fail("timed out waiting for Semaphore for "
1513	+	+ (LONG_DELAY_MS/1000) + " sec");
1514	+	} catch (Throwable fail) {
1515	+	threadUnexpectedException(fail);
1516	+	}
1517	+	}
1518	+
1519	+	//     /**
1520	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1521	+	//      */
1522	+	//     public void await(AtomicBoolean flag) {
1523	+	//         await(flag, LONG_DELAY_MS);
1524	+	//     }
1525	+
1526	+	//     /**
1527	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1528	+	//      */
1529	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1530	+	//         long startTime = System.nanoTime();
1531	+	//         while (!flag.get()) {
1532	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1533	+	//                 throw new AssertionFailedError("timed out");
1534	+	//             Thread.yield();
1535	+	//         }
1536	+	//     }
1537	+
1538	+	public static class NPETask implements Callable<String> {
1539	+	public String call() { throw new NullPointerException(); }
1540	+	}
1541	+
1542	+	public static class CallableOne implements Callable<Integer> {
1543	+	public Integer call() { return one; }
1544	+	}
1545	+
1546	+	public class ShortRunnable extends CheckedRunnable {
1547	+	protected void realRun() throws Throwable {
1548	+	delay(SHORT_DELAY_MS);
1549	+	}
1550	+	}
1551	+
1552	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1553	+	protected void realRun() throws InterruptedException {
1554	+	delay(SHORT_DELAY_MS);
1555	+	}
1556	+	}
1557	+
1558	+	public class SmallRunnable extends CheckedRunnable {
1559	+	protected void realRun() throws Throwable {
1560	+	delay(SMALL_DELAY_MS);
1561	+	}
1562	+	}
1563	+
1564	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1565	+	protected void realRun() {
1566	+	try {
1567	+	delay(SMALL_DELAY_MS);
1568	+	} catch (InterruptedException ok) {}
1569	+	}
1570	+	}
1571	+
1572	+	public class SmallCallable extends CheckedCallable {
1573	+	protected Object realCall() throws InterruptedException {
1574	+	delay(SMALL_DELAY_MS);
1575		return Boolean.TRUE;
1576		}
1577		}
1578
1579	<	public class SmallInterruptedRunnable implements Runnable {
1579	>	public class MediumRunnable extends CheckedRunnable {
1580	>	protected void realRun() throws Throwable {
1581	>	delay(MEDIUM_DELAY_MS);
1582	>	}
1583	>	}
1584	>
1585	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1586	>	protected void realRun() throws InterruptedException {
1587	>	delay(MEDIUM_DELAY_MS);
1588	>	}
1589	>	}
1590	>
1591	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1592	>	return new CheckedRunnable() {
1593	>	protected void realRun() {
1594	>	try {
1595	>	delay(timeoutMillis);
1596	>	} catch (InterruptedException ok) {}
1597	>	}};
1598	>	}
1599	>
1600	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1601	>	protected void realRun() {
1602	>	try {
1603	>	delay(MEDIUM_DELAY_MS);
1604	>	} catch (InterruptedException ok) {}
1605	>	}
1606	>	}
1607	>
1608	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1609	>	protected void realRun() {
1610	>	try {
1611	>	delay(LONG_DELAY_MS);
1612	>	} catch (InterruptedException ok) {}
1613	>	}
1614	>	}
1615	>
1616	>	/**
1617	>	* For use as ThreadFactory in constructors
1618	>	*/
1619	>	public static class SimpleThreadFactory implements ThreadFactory {
1620	>	public Thread newThread(Runnable r) {
1621	>	return new Thread(r);
1622	>	}
1623	>	}
1624	>
1625	>	public interface TrackedRunnable extends Runnable {
1626	>	boolean isDone();
1627	>	}
1628	>
1629	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1630	>	return new TrackedRunnable() {
1631	>	private volatile boolean done = false;
1632	>	public boolean isDone() { return done; }
1633	>	public void run() {
1634	>	try {
1635	>	delay(timeoutMillis);
1636	>	done = true;
1637	>	} catch (InterruptedException ok) {}
1638	>	}
1639	>	};
1640	>	}
1641	>
1642	>	public static class TrackedShortRunnable implements Runnable {
1643	>	public volatile boolean done = false;
1644		public void run() {
1645		try {
1646	<	Thread.sleep(SMALL_DELAY_MS);
1647	<	threadFail("should throw IE");
1648	<	}
237	<	catch(InterruptedException success) {
238	<	}
1646	>	delay(SHORT_DELAY_MS);
1647	>	done = true;
1648	>	} catch (InterruptedException ok) {}
1649		}
1650		}
1651
1652	+	public static class TrackedSmallRunnable implements Runnable {
1653	+	public volatile boolean done = false;
1654	+	public void run() {
1655	+	try {
1656	+	delay(SMALL_DELAY_MS);
1657	+	done = true;
1658	+	} catch (InterruptedException ok) {}
1659	+	}
1660	+	}
1661
1662	<	public class MediumRunnable implements Runnable {
1662	>	public static class TrackedMediumRunnable implements Runnable {
1663	>	public volatile boolean done = false;
1664		public void run() {
1665		try {
1666	<	Thread.sleep(MEDIUM_DELAY_MS);
1667	<	}
1668	<	catch(Exception e) {
1669	<	threadFail("unexpectedException");
1670	<	}
1666	>	delay(MEDIUM_DELAY_MS);
1667	>	done = true;
1668	>	} catch (InterruptedException ok) {}
1669	>	}
1670	>	}
1671	>
1672	>	public static class TrackedLongRunnable implements Runnable {
1673	>	public volatile boolean done = false;
1674	>	public void run() {
1675	>	try {
1676	>	delay(LONG_DELAY_MS);
1677	>	done = true;
1678	>	} catch (InterruptedException ok) {}
1679		}
1680		}
1681
1682	<	public class MediumInterruptedRunnable implements Runnable {
1682	>	public static class TrackedNoOpRunnable implements Runnable {
1683	>	public volatile boolean done = false;
1684		public void run() {
1685	+	done = true;
1686	+	}
1687	+	}
1688	+
1689	+	public static class TrackedCallable implements Callable {
1690	+	public volatile boolean done = false;
1691	+	public Object call() {
1692	+	try {
1693	+	delay(SMALL_DELAY_MS);
1694	+	done = true;
1695	+	} catch (InterruptedException ok) {}
1696	+	return Boolean.TRUE;
1697	+	}
1698	+	}
1699	+
1700	+	/**
1701	+	* Analog of CheckedRunnable for RecursiveAction
1702	+	*/
1703	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1704	+	protected abstract void realCompute() throws Throwable;
1705	+
1706	+	@Override protected final void compute() {
1707		try {
1708	<	Thread.sleep(MEDIUM_DELAY_MS);
1709	<	threadFail("should throw IE");
1708	>	realCompute();
1709	>	} catch (Throwable fail) {
1710	>	threadUnexpectedException(fail);
1711		}
1712	<	catch(InterruptedException success) {
1712	>	}
1713	>	}
1714	>
1715	>	/**
1716	>	* Analog of CheckedCallable for RecursiveTask
1717	>	*/
1718	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1719	>	protected abstract T realCompute() throws Throwable;
1720	>
1721	>	@Override protected final T compute() {
1722	>	try {
1723	>	return realCompute();
1724	>	} catch (Throwable fail) {
1725	>	threadUnexpectedException(fail);
1726	>	return null;
1727		}
1728		}
1729		}
1730
1731	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1732	<	public void run() {
1731	>	/**
1732	>	* For use as RejectedExecutionHandler in constructors
1733	>	*/
1734	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1735	>	public void rejectedExecution(Runnable r,
1736	>	ThreadPoolExecutor executor) {}
1737	>	}
1738	>
1739	>	/**
1740	>	* A CyclicBarrier that uses timed await and fails with
1741	>	* AssertionFailedErrors instead of throwing checked exceptions.
1742	>	*/
1743	>	public class CheckedBarrier extends CyclicBarrier {
1744	>	public CheckedBarrier(int parties) { super(parties); }
1745	>
1746	>	public int await() {
1747		try {
1748	<	Thread.sleep(MEDIUM_DELAY_MS);
1748	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1749	>	} catch (TimeoutException timedOut) {
1750	>	throw new AssertionFailedError("timed out");
1751	>	} catch (Exception fail) {
1752	>	AssertionFailedError afe =
1753	>	new AssertionFailedError("Unexpected exception: " + fail);
1754	>	afe.initCause(fail);
1755	>	throw afe;
1756		}
1757	<	catch(InterruptedException success) {
1757	>	}
1758	>	}
1759	>
1760	>	void checkEmpty(BlockingQueue q) {
1761	>	try {
1762	>	assertTrue(q.isEmpty());
1763	>	assertEquals(0, q.size());
1764	>	assertNull(q.peek());
1765	>	assertNull(q.poll());
1766	>	assertNull(q.poll(0, MILLISECONDS));
1767	>	assertEquals(q.toString(), "[]");
1768	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1769	>	assertFalse(q.iterator().hasNext());
1770	>	try {
1771	>	q.element();
1772	>	shouldThrow();
1773	>	} catch (NoSuchElementException success) {}
1774	>	try {
1775	>	q.iterator().next();
1776	>	shouldThrow();
1777	>	} catch (NoSuchElementException success) {}
1778	>	try {
1779	>	q.remove();
1780	>	shouldThrow();
1781	>	} catch (NoSuchElementException success) {}
1782	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1783	>	}
1784	>
1785	>	void assertSerialEquals(Object x, Object y) {
1786	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1787	>	}
1788	>
1789	>	void assertNotSerialEquals(Object x, Object y) {
1790	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1791	>	}
1792	>
1793	>	byte[] serialBytes(Object o) {
1794	>	try {
1795	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1796	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1797	>	oos.writeObject(o);
1798	>	oos.flush();
1799	>	oos.close();
1800	>	return bos.toByteArray();
1801	>	} catch (Throwable fail) {
1802	>	threadUnexpectedException(fail);
1803	>	return new byte[0];
1804	>	}
1805	>	}
1806	>
1807	>	@SuppressWarnings("unchecked")
1808	>	<T> T serialClone(T o) {
1809	>	try {
1810	>	ObjectInputStream ois = new ObjectInputStream
1811	>	(new ByteArrayInputStream(serialBytes(o)));
1812	>	T clone = (T) ois.readObject();
1813	>	assertSame(o.getClass(), clone.getClass());
1814	>	return clone;
1815	>	} catch (Throwable fail) {
1816	>	threadUnexpectedException(fail);
1817	>	return null;
1818	>	}
1819	>	}
1820	>
1821	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1822	>	Runnable... throwingActions) {
1823	>	for (Runnable throwingAction : throwingActions) {
1824	>	boolean threw = false;
1825	>	try { throwingAction.run(); }
1826	>	catch (Throwable t) {
1827	>	threw = true;
1828	>	if (!expectedExceptionClass.isInstance(t)) {
1829	>	AssertionFailedError afe =
1830	>	new AssertionFailedError
1831	>	("Expected " + expectedExceptionClass.getName() +
1832	>	", got " + t.getClass().getName());
1833	>	afe.initCause(t);
1834	>	threadUnexpectedException(afe);
1835	>	}
1836		}
1837	+	if (!threw)
1838	+	shouldThrow(expectedExceptionClass.getName());
1839		}
1840		}
1841	<
1841	>
1842	>	public void assertIteratorExhausted(Iterator<?> it) {
1843	>	try {
1844	>	it.next();
1845	>	shouldThrow();
1846	>	} catch (NoSuchElementException success) {}
1847	>	assertFalse(it.hasNext());
1848	>	}
1849	>
1850	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1851	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1852	>	}
1853	>
1854	>	public Runnable runnableThrowing(final RuntimeException ex) {
1855	>	return new Runnable() { public void run() { throw ex; }};
1856	>	}
1857	>
1858	>	/** A reusable thread pool to be shared by tests. */
1859	>	static final ExecutorService cachedThreadPool =
1860	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1861	>	1000L, MILLISECONDS,
1862	>	new SynchronousQueue<Runnable>());
1863	>
1864		}

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