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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.84 by jsr166, Sat May 28 22:19:27 2011 UTC vs.
Revision 1.199 by jsr166, Sat Aug 6 16:24:05 2016 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
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	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 -Djava.util.secureRandomSeed=true JSR166TestCase
17	>	*/
18	>
19	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
20	>	import static java.util.concurrent.TimeUnit.MINUTES;
21	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
22	>
23		import java.io.ByteArrayInputStream;
24		import java.io.ByteArrayOutputStream;
25		import java.io.ObjectInputStream;
26		import java.io.ObjectOutputStream;
27	<	import java.util.Arrays;
28	<	import java.util.Date;
29	<	import java.util.NoSuchElementException;
30	<	import java.util.PropertyPermission;
31	<	import java.util.concurrent.*;
32	<	import java.util.concurrent.atomic.AtomicBoolean;
33	<	import java.util.concurrent.atomic.AtomicReference;
34	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
22	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
27	>	import java.lang.management.ManagementFactory;
28	>	import java.lang.management.ThreadInfo;
29	>	import java.lang.management.ThreadMXBean;
30	>	import java.lang.reflect.Constructor;
31	>	import java.lang.reflect.Method;
32	>	import java.lang.reflect.Modifier;
33	>	import java.nio.file.Files;
34	>	import java.nio.file.Paths;
35		import java.security.CodeSource;
36		import java.security.Permission;
37		import java.security.PermissionCollection;
#	Line 27 | Line 39 | import java.security.Permissions;
39		import java.security.Policy;
40		import java.security.ProtectionDomain;
41		import java.security.SecurityPermission;
42	+	import java.util.ArrayList;
43	+	import java.util.Arrays;
44	+	import java.util.Date;
45	+	import java.util.Enumeration;
46	+	import java.util.Iterator;
47	+	import java.util.List;
48	+	import java.util.NoSuchElementException;
49	+	import java.util.PropertyPermission;
50	+	import java.util.concurrent.BlockingQueue;
51	+	import java.util.concurrent.Callable;
52	+	import java.util.concurrent.CountDownLatch;
53	+	import java.util.concurrent.CyclicBarrier;
54	+	import java.util.concurrent.ExecutionException;
55	+	import java.util.concurrent.Executors;
56	+	import java.util.concurrent.ExecutorService;
57	+	import java.util.concurrent.ForkJoinPool;
58	+	import java.util.concurrent.Future;
59	+	import java.util.concurrent.RecursiveAction;
60	+	import java.util.concurrent.RecursiveTask;
61	+	import java.util.concurrent.RejectedExecutionHandler;
62	+	import java.util.concurrent.Semaphore;
63	+	import java.util.concurrent.SynchronousQueue;
64	+	import java.util.concurrent.ThreadFactory;
65	+	import java.util.concurrent.ThreadPoolExecutor;
66	+	import java.util.concurrent.TimeoutException;
67	+	import java.util.concurrent.atomic.AtomicBoolean;
68	+	import java.util.concurrent.atomic.AtomicReference;
69	+	import java.util.regex.Matcher;
70	+	import java.util.regex.Pattern;
71	+
72	+	import junit.framework.AssertionFailedError;
73	+	import junit.framework.Test;
74	+	import junit.framework.TestCase;
75	+	import junit.framework.TestResult;
76	+	import junit.framework.TestSuite;
77
78		/**
79		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 38 | Line 85 | import java.security.SecurityPermission;
85		*
86		* <ol>
87		*
88	<	* <li> All assertions in code running in generated threads must use
88	>	* <li>All assertions in code running in generated threads must use
89		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
90		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
91		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
92		* particularly recommended) for other code to use these forms too.
93		* Only the most typically used JUnit assertion methods are defined
94	<	* this way, but enough to live with.</li>
94	>	* this way, but enough to live with.
95		*
96	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
96	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
97		* to invoke {@code super.setUp} and {@code super.tearDown} within
98		* them. These methods are used to clear and check for thread
99	<	* assertion failures.</li>
99	>	* assertion failures.
100		*
101		* <li>All delays and timeouts must use one of the constants {@code
102		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 60 | Line 107 | import java.security.SecurityPermission;
107		* is always discriminable as larger than SHORT and smaller than
108		* MEDIUM.  And so on. These constants are set to conservative values,
109		* but even so, if there is ever any doubt, they can all be increased
110	<	* in one spot to rerun tests on slower platforms.</li>
110	>	* in one spot to rerun tests on slower platforms.
111		*
112	<	* <li> All threads generated must be joined inside each test case
112	>	* <li>All threads generated must be joined inside each test case
113		* method (or {@code fail} to do so) before returning from the
114		* method. The {@code joinPool} method can be used to do this when
115	<	* using Executors.</li>
115	>	* using Executors.
116		*
117		* </ol>
118		*
119	<	* <p> <b>Other notes</b>
119	>	* <p><b>Other notes</b>
120		* <ul>
121		*
122	<	* <li> Usually, there is one testcase method per JSR166 method
122	>	* <li>Usually, there is one testcase method per JSR166 method
123		* covering "normal" operation, and then as many exception-testing
124		* methods as there are exceptions the method can throw. Sometimes
125		* there are multiple tests per JSR166 method when the different
126		* "normal" behaviors differ significantly. And sometimes testcases
127	<	* cover multiple methods when they cannot be tested in
81	<	* isolation.</li>
127	>	* cover multiple methods when they cannot be tested in isolation.
128		*
129	<	* <li> The documentation style for testcases is to provide as javadoc
129	>	* <li>The documentation style for testcases is to provide as javadoc
130		* a simple sentence or two describing the property that the testcase
131		* method purports to test. The javadocs do not say anything about how
132	<	* the property is tested. To find out, read the code.</li>
132	>	* the property is tested. To find out, read the code.
133		*
134	<	* <li> These tests are "conformance tests", and do not attempt to
134	>	* <li>These tests are "conformance tests", and do not attempt to
135		* test throughput, latency, scalability or other performance factors
136		* (see the separate "jtreg" tests for a set intended to check these
137		* for the most central aspects of functionality.) So, most tests use
138		* the smallest sensible numbers of threads, collection sizes, etc
139	<	* needed to check basic conformance.</li>
139	>	* needed to check basic conformance.
140		*
141		* <li>The test classes currently do not declare inclusion in
142		* any particular package to simplify things for people integrating
143	<	* them in TCK test suites.</li>
143	>	* them in TCK test suites.
144		*
145	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
146	<	* runs all JSR166 unit tests.</li>
145	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
146	>	* runs all JSR166 unit tests.
147		*
148		* </ul>
149		*/
#	Line 109 | Line 155 | public class JSR166TestCase extends Test
155		Boolean.getBoolean("jsr166.expensiveTests");
156
157		/**
158	+	* If true, also run tests that are not part of the official tck
159	+	* because they test unspecified implementation details.
160	+	*/
161	+	protected static final boolean testImplementationDetails =
162	+	Boolean.getBoolean("jsr166.testImplementationDetails");
163	+
164	+	/**
165		* If true, report on stdout all "slow" tests, that is, ones that
166		* take more than profileThreshold milliseconds to execute.
167		*/
#	Line 122 | Line 175 | public class JSR166TestCase extends Test
175		private static final long profileThreshold =
176		Long.getLong("jsr166.profileThreshold", 100);
177
178	+	/**
179	+	* The number of repetitions per test (for tickling rare bugs).
180	+	*/
181	+	private static final int runsPerTest =
182	+	Integer.getInteger("jsr166.runsPerTest", 1);
183	+
184	+	/**
185	+	* The number of repetitions of the test suite (for finding leaks?).
186	+	*/
187	+	private static final int suiteRuns =
188	+	Integer.getInteger("jsr166.suiteRuns", 1);
189	+
190	+	/**
191	+	* Returns the value of the system property, or NaN if not defined.
192	+	*/
193	+	private static float systemPropertyValue(String name) {
194	+	String floatString = System.getProperty(name);
195	+	if (floatString == null)
196	+	return Float.NaN;
197	+	try {
198	+	return Float.parseFloat(floatString);
199	+	} catch (NumberFormatException ex) {
200	+	throw new IllegalArgumentException(
201	+	String.format("Bad float value in system property %s=%s",
202	+	name, floatString));
203	+	}
204	+	}
205	+
206	+	/**
207	+	* The scaling factor to apply to standard delays used in tests.
208	+	* May be initialized from any of:
209	+	* - the "jsr166.delay.factor" system property
210	+	* - the "test.timeout.factor" system property (as used by jtreg)
211	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
212	+	* - hard-coded fuzz factor when using a known slowpoke VM
213	+	*/
214	+	private static final float delayFactor = delayFactor();
215	+
216	+	private static float delayFactor() {
217	+	float x;
218	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
219	+	return x;
220	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
221	+	return x;
222	+	String prop = System.getProperty("java.vm.version");
223	+	if (prop != null && prop.matches(".*debug.*"))
224	+	return 4.0f; // How much slower is fastdebug than product?!
225	+	return 1.0f;
226	+	}
227	+
228	+	public JSR166TestCase() { super(); }
229	+	public JSR166TestCase(String name) { super(name); }
230	+
231	+	/**
232	+	* A filter for tests to run, matching strings of the form
233	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
234	+	* Usefully combined with jsr166.runsPerTest.
235	+	*/
236	+	private static final Pattern methodFilter = methodFilter();
237	+
238	+	private static Pattern methodFilter() {
239	+	String regex = System.getProperty("jsr166.methodFilter");
240	+	return (regex == null) ? null : Pattern.compile(regex);
241	+	}
242	+
243	+	// Instrumentation to debug very rare, but very annoying hung test runs.
244	+	static volatile TestCase currentTestCase;
245	+	// static volatile int currentRun = 0;
246	+	static {
247	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
248	+	// Avoid spurious reports with enormous runsPerTest.
249	+	// A single test case run should never take more than 1 second.
250	+	// But let's cap it at the high end too ...
251	+	final int timeoutMinutes =
252	+	Math.min(15, Math.max(runsPerTest / 60, 1));
253	+	for (TestCase lastTestCase = currentTestCase;;) {
254	+	try { MINUTES.sleep(timeoutMinutes); }
255	+	catch (InterruptedException unexpected) { break; }
256	+	if (lastTestCase == currentTestCase) {
257	+	System.err.printf(
258	+	"Looks like we're stuck running test: %s%n",
259	+	lastTestCase);
260	+	//                     System.err.printf(
261	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
262	+	//                         lastTestCase, currentRun, runsPerTest);
263	+	//                     System.err.println("availableProcessors=" +
264	+	//                         Runtime.getRuntime().availableProcessors());
265	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
266	+	dumpTestThreads();
267	+	// one stack dump is probably enough; more would be spam
268	+	break;
269	+	}
270	+	lastTestCase = currentTestCase;
271	+	}}};
272	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
273	+	thread.setDaemon(true);
274	+	thread.start();
275	+	}
276	+
277	+	//     public static String cpuModel() {
278	+	//         try {
279	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
280	+	//                 .matcher(new String(
281	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
282	+	//             matcher.find();
283	+	//             return matcher.group(1);
284	+	//         } catch (Exception ex) { return null; }
285	+	//     }
286	+
287	+	public void runBare() throws Throwable {
288	+	currentTestCase = this;
289	+	if (methodFilter == null
290	+	|| methodFilter.matcher(toString()).find())
291	+	super.runBare();
292	+	}
293	+
294		protected void runTest() throws Throwable {
295	<	if (profileTests)
296	<	runTestProfiled();
297	<	else
298	<	super.runTest();
295	>	for (int i = 0; i < runsPerTest; i++) {
296	>	// currentRun = i;
297	>	if (profileTests)
298	>	runTestProfiled();
299	>	else
300	>	super.runTest();
301	>	}
302		}
303
304		protected void runTestProfiled() throws Throwable {
305	<	long t0 = System.nanoTime();
306	<	try {
305	>	for (int i = 0; i < 2; i++) {
306	>	long startTime = System.nanoTime();
307		super.runTest();
308	<	} finally {
309	<	long elapsedMillis =
310	<	(System.nanoTime() - t0) / (1000L * 1000L);
311	<	if (elapsedMillis >= profileThreshold)
308	>	long elapsedMillis = millisElapsedSince(startTime);
309	>	if (elapsedMillis < profileThreshold)
310	>	break;
311	>	// Never report first run of any test; treat it as a
312	>	// warmup run, notably to trigger all needed classloading,
313	>	if (i > 0)
314		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
315		}
316		}
317
318		/**
319	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
319	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
320		*/
321		public static void main(String[] args) {
322	+	main(suite(), args);
323	+	}
324	+
325	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
326	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
327	+	long runTime;
328	+	public void startTest(Test test) {}
329	+	protected void printHeader(long runTime) {
330	+	this.runTime = runTime; // defer printing for later
331	+	}
332	+	protected void printFooter(TestResult result) {
333	+	if (result.wasSuccessful()) {
334	+	getWriter().println("OK (" + result.runCount() + " tests)"
335	+	+ "  Time: " + elapsedTimeAsString(runTime));
336	+	} else {
337	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
338	+	super.printFooter(result);
339	+	}
340	+	}
341	+	}
342	+
343	+	/**
344	+	* Returns a TestRunner that doesn't bother with unnecessary
345	+	* fluff, like printing a "." for each test case.
346	+	*/
347	+	static junit.textui.TestRunner newPithyTestRunner() {
348	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
349	+	runner.setPrinter(new PithyResultPrinter(System.out));
350	+	return runner;
351	+	}
352	+
353	+	/**
354	+	* Runs all unit tests in the given test suite.
355	+	* Actual behavior influenced by jsr166.* system properties.
356	+	*/
357	+	static void main(Test suite, String[] args) {
358		if (useSecurityManager) {
359		System.err.println("Setting a permissive security manager");
360		Policy.setPolicy(permissivePolicy());
361		System.setSecurityManager(new SecurityManager());
362		}
363	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
364	<
365	<	Test s = suite();
366	<	for (int i = 0; i < iters; ++i) {
157	<	junit.textui.TestRunner.run(s);
363	>	for (int i = 0; i < suiteRuns; i++) {
364	>	TestResult result = newPithyTestRunner().doRun(suite);
365	>	if (!result.wasSuccessful())
366	>	System.exit(1);
367		System.gc();
368		System.runFinalization();
369		}
161	–	System.exit(0);
370		}
371
372		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 174 | Line 382 | public class JSR166TestCase extends Test
382		return suite;
383		}
384
385	+	public static void addNamedTestClasses(TestSuite suite,
386	+	String... testClassNames) {
387	+	for (String testClassName : testClassNames) {
388	+	try {
389	+	Class<?> testClass = Class.forName(testClassName);
390	+	Method m = testClass.getDeclaredMethod("suite",
391	+	new Class<?>[0]);
392	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
393	+	} catch (Exception e) {
394	+	throw new Error("Missing test class", e);
395	+	}
396	+	}
397	+	}
398	+
399	+	public static final double JAVA_CLASS_VERSION;
400	+	public static final String JAVA_SPECIFICATION_VERSION;
401	+	static {
402	+	try {
403	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
404	+	new java.security.PrivilegedAction<Double>() {
405	+	public Double run() {
406	+	return Double.valueOf(System.getProperty("java.class.version"));}});
407	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
408	+	new java.security.PrivilegedAction<String>() {
409	+	public String run() {
410	+	return System.getProperty("java.specification.version");}});
411	+	} catch (Throwable t) {
412	+	throw new Error(t);
413	+	}
414	+	}
415	+
416	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
417	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
418	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
419	+	public static boolean atLeastJava9() {
420	+	return JAVA_CLASS_VERSION >= 53.0
421	+	// As of 2015-09, java9 still uses 52.0 class file version
422	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
423	+	}
424	+	public static boolean atLeastJava10() {
425	+	return JAVA_CLASS_VERSION >= 54.0
426	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
427	+	}
428	+
429		/**
430		* Collects all JSR166 unit tests as one suite.
431		*/
432		public static Test suite() {
433	<	return newTestSuite(
433	>	// Java7+ test classes
434	>	TestSuite suite = newTestSuite(
435		ForkJoinPoolTest.suite(),
436		ForkJoinTaskTest.suite(),
437		RecursiveActionTest.suite(),
#	Line 243 | Line 496 | public class JSR166TestCase extends Test
496		TreeSetTest.suite(),
497		TreeSubMapTest.suite(),
498		TreeSubSetTest.suite());
499	+
500	+	// Java8+ test classes
501	+	if (atLeastJava8()) {
502	+	String[] java8TestClassNames = {
503	+	"Atomic8Test",
504	+	"CompletableFutureTest",
505	+	"ConcurrentHashMap8Test",
506	+	"CountedCompleterTest",
507	+	"DoubleAccumulatorTest",
508	+	"DoubleAdderTest",
509	+	"ForkJoinPool8Test",
510	+	"ForkJoinTask8Test",
511	+	"LongAccumulatorTest",
512	+	"LongAdderTest",
513	+	"SplittableRandomTest",
514	+	"StampedLockTest",
515	+	"SubmissionPublisherTest",
516	+	"ThreadLocalRandom8Test",
517	+	"TimeUnit8Test",
518	+	};
519	+	addNamedTestClasses(suite, java8TestClassNames);
520	+	}
521	+
522	+	// Java9+ test classes
523	+	if (atLeastJava9()) {
524	+	String[] java9TestClassNames = {
525	+	"AtomicBoolean9Test",
526	+	"AtomicInteger9Test",
527	+	"AtomicIntegerArray9Test",
528	+	"AtomicLong9Test",
529	+	"AtomicLongArray9Test",
530	+	"AtomicReference9Test",
531	+	"AtomicReferenceArray9Test",
532	+	"ExecutorCompletionService9Test",
533	+	};
534	+	addNamedTestClasses(suite, java9TestClassNames);
535	+	}
536	+
537	+	return suite;
538	+	}
539	+
540	+	/** Returns list of junit-style test method names in given class. */
541	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
542	+	Method[] methods = testClass.getDeclaredMethods();
543	+	ArrayList<String> names = new ArrayList<String>(methods.length);
544	+	for (Method method : methods) {
545	+	if (method.getName().startsWith("test")
546	+	&& Modifier.isPublic(method.getModifiers())
547	+	// method.getParameterCount() requires jdk8+
548	+	&& method.getParameterTypes().length == 0) {
549	+	names.add(method.getName());
550	+	}
551	+	}
552	+	return names;
553	+	}
554	+
555	+	/**
556	+	* Returns junit-style testSuite for the given test class, but
557	+	* parameterized by passing extra data to each test.
558	+	*/
559	+	public static <ExtraData> Test parameterizedTestSuite
560	+	(Class<? extends JSR166TestCase> testClass,
561	+	Class<ExtraData> dataClass,
562	+	ExtraData data) {
563	+	try {
564	+	TestSuite suite = new TestSuite();
565	+	Constructor c =
566	+	testClass.getDeclaredConstructor(dataClass, String.class);
567	+	for (String methodName : testMethodNames(testClass))
568	+	suite.addTest((Test) c.newInstance(data, methodName));
569	+	return suite;
570	+	} catch (Exception e) {
571	+	throw new Error(e);
572	+	}
573	+	}
574	+
575	+	/**
576	+	* Returns junit-style testSuite for the jdk8 extension of the
577	+	* given test class, but parameterized by passing extra data to
578	+	* each test.  Uses reflection to allow compilation in jdk7.
579	+	*/
580	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
581	+	(Class<? extends JSR166TestCase> testClass,
582	+	Class<ExtraData> dataClass,
583	+	ExtraData data) {
584	+	if (atLeastJava8()) {
585	+	String name = testClass.getName();
586	+	String name8 = name.replaceAll("Test$", "8Test");
587	+	if (name.equals(name8)) throw new Error(name);
588	+	try {
589	+	return (Test)
590	+	Class.forName(name8)
591	+	.getMethod("testSuite", new Class[] { dataClass })
592	+	.invoke(null, data);
593	+	} catch (Exception e) {
594	+	throw new Error(e);
595	+	}
596	+	} else {
597	+	return new TestSuite();
598	+	}
599		}
600
601	+	// Delays for timing-dependent tests, in milliseconds.
602
603		public static long SHORT_DELAY_MS;
604		public static long SMALL_DELAY_MS;
605		public static long MEDIUM_DELAY_MS;
606		public static long LONG_DELAY_MS;
607
254	–
608		/**
609	<	* Returns the shortest timed delay. This could
610	<	* be reimplemented to use for example a Property.
609	>	* Returns the shortest timed delay. This can be scaled up for
610	>	* slow machines using the jsr166.delay.factor system property,
611	>	* or via jtreg's -timeoutFactor: flag.
612	>	* http://openjdk.java.net/jtreg/command-help.html
613		*/
614		protected long getShortDelay() {
615	<	return 50;
615	>	return (long) (50 * delayFactor);
616		}
617
618		/**
#	Line 279 | Line 634 | public class JSR166TestCase extends Test
634		}
635
636		/**
637	<	* Returns a new Date instance representing a time delayMillis
638	<	* milliseconds in the future.
637	>	* Returns a new Date instance representing a time at least
638	>	* delayMillis milliseconds in the future.
639		*/
640		Date delayedDate(long delayMillis) {
641	<	return new Date(System.currentTimeMillis() + delayMillis);
641	>	// Add 1 because currentTimeMillis is known to round into the past.
642	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
643		}
644
645		/**
#	Line 299 | Line 655 | public class JSR166TestCase extends Test
655		* the same test have no effect.
656		*/
657		public void threadRecordFailure(Throwable t) {
658	+	System.err.println(t);
659	+	dumpTestThreads();
660		threadFailure.compareAndSet(null, t);
661		}
662
#	Line 306 | Line 664 | public class JSR166TestCase extends Test
664		setDelays();
665		}
666
667	+	void tearDownFail(String format, Object... args) {
668	+	String msg = toString() + ": " + String.format(format, args);
669	+	System.err.println(msg);
670	+	dumpTestThreads();
671	+	throw new AssertionFailedError(msg);
672	+	}
673	+
674		/**
675	+	* Extra checks that get done for all test cases.
676	+	*
677		* Triggers test case failure if any thread assertions have failed,
678		* by rethrowing, in the test harness thread, any exception recorded
679		* earlier by threadRecordFailure.
680	+	*
681	+	* Triggers test case failure if interrupt status is set in the main thread.
682		*/
683		public void tearDown() throws Exception {
684		Throwable t = threadFailure.getAndSet(null);
#	Line 327 | Line 696 | public class JSR166TestCase extends Test
696		throw afe;
697		}
698		}
699	+
700	+	if (Thread.interrupted())
701	+	tearDownFail("interrupt status set in main thread");
702	+
703	+	checkForkJoinPoolThreadLeaks();
704	+	}
705	+
706	+	/**
707	+	* Finds missing PoolCleaners
708	+	*/
709	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
710	+	Thread[] survivors = new Thread[7];
711	+	int count = Thread.enumerate(survivors);
712	+	for (int i = 0; i < count; i++) {
713	+	Thread thread = survivors[i];
714	+	String name = thread.getName();
715	+	if (name.startsWith("ForkJoinPool-")) {
716	+	// give thread some time to terminate
717	+	thread.join(LONG_DELAY_MS);
718	+	if (thread.isAlive())
719	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
720	+	thread);
721	+	}
722	+	}
723	+
724	+	if (!ForkJoinPool.commonPool()
725	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
726	+	tearDownFail("ForkJoin common pool thread stuck");
727		}
728
729		/**
#	Line 339 | Line 736 | public class JSR166TestCase extends Test
736		fail(reason);
737		} catch (AssertionFailedError t) {
738		threadRecordFailure(t);
739	<	fail(reason);
739	>	throw t;
740		}
741		}
742
#	Line 407 | Line 804 | public class JSR166TestCase extends Test
804		public void threadAssertEquals(Object x, Object y) {
805		try {
806		assertEquals(x, y);
807	<	} catch (AssertionFailedError t) {
808	<	threadRecordFailure(t);
809	<	throw t;
810	<	} catch (Throwable t) {
811	<	threadUnexpectedException(t);
807	>	} catch (AssertionFailedError fail) {
808	>	threadRecordFailure(fail);
809	>	throw fail;
810	>	} catch (Throwable fail) {
811	>	threadUnexpectedException(fail);
812		}
813		}
814
#	Line 423 | Line 820 | public class JSR166TestCase extends Test
820		public void threadAssertSame(Object x, Object y) {
821		try {
822		assertSame(x, y);
823	<	} catch (AssertionFailedError t) {
824	<	threadRecordFailure(t);
825	<	throw t;
823	>	} catch (AssertionFailedError fail) {
824	>	threadRecordFailure(fail);
825	>	throw fail;
826		}
827		}
828
#	Line 466 | Line 863 | public class JSR166TestCase extends Test
863		/**
864		* Delays, via Thread.sleep, for the given millisecond delay, but
865		* if the sleep is shorter than specified, may re-sleep or yield
866	<	* until time elapses.
866	>	* until time elapses.  Ensures that the given time, as measured
867	>	* by System.nanoTime(), has elapsed.
868		*/
869		static void delay(long millis) throws InterruptedException {
870	<	long startTime = System.nanoTime();
871	<	long ns = millis * 1000 * 1000;
872	<	for (;;) {
870	>	long nanos = millis * (1000 * 1000);
871	>	final long wakeupTime = System.nanoTime() + nanos;
872	>	do {
873		if (millis > 0L)
874		Thread.sleep(millis);
875		else // too short to sleep
876		Thread.yield();
877	<	long d = ns - (System.nanoTime() - startTime);
878	<	if (d > 0L)
879	<	millis = d / (1000 * 1000);
880	<	else
881	<	break;
877	>	nanos = wakeupTime - System.nanoTime();
878	>	millis = nanos / (1000 * 1000);
879	>	} while (nanos >= 0L);
880	>	}
881	>
882	>	/**
883	>	* Allows use of try-with-resources with per-test thread pools.
884	>	*/
885	>	class PoolCleaner implements AutoCloseable {
886	>	private final ExecutorService pool;
887	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
888	>	public void close() { joinPool(pool); }
889	>	}
890	>
891	>	/**
892	>	* An extension of PoolCleaner that has an action to release the pool.
893	>	*/
894	>	class PoolCleanerWithReleaser extends PoolCleaner {
895	>	private final Runnable releaser;
896	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
897	>	super(pool);
898	>	this.releaser = releaser;
899	>	}
900	>	public void close() {
901	>	try {
902	>	releaser.run();
903	>	} finally {
904	>	super.close();
905	>	}
906		}
907		}
908
909	+	PoolCleaner cleaner(ExecutorService pool) {
910	+	return new PoolCleaner(pool);
911	+	}
912	+
913	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
914	+	return new PoolCleanerWithReleaser(pool, releaser);
915	+	}
916	+
917	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
918	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
919	+	}
920	+
921	+	Runnable releaser(final CountDownLatch latch) {
922	+	return new Runnable() { public void run() {
923	+	do { latch.countDown(); }
924	+	while (latch.getCount() > 0);
925	+	}};
926	+	}
927	+
928	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
929	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
930	+	}
931	+
932	+	Runnable releaser(final AtomicBoolean flag) {
933	+	return new Runnable() { public void run() { flag.set(true); }};
934	+	}
935	+
936		/**
937		* Waits out termination of a thread pool or fails doing so.
938		*/
939	<	void joinPool(ExecutorService exec) {
939	>	void joinPool(ExecutorService pool) {
940		try {
941	<	exec.shutdown();
942	<	assertTrue("ExecutorService did not terminate in a timely manner",
943	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
941	>	pool.shutdown();
942	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
943	>	try {
944	>	threadFail("ExecutorService " + pool +
945	>	" did not terminate in a timely manner");
946	>	} finally {
947	>	// last resort, for the benefit of subsequent tests
948	>	pool.shutdownNow();
949	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
950	>	}
951	>	}
952		} catch (SecurityException ok) {
953		// Allowed in case test doesn't have privs
954	<	} catch (InterruptedException ie) {
955	<	fail("Unexpected InterruptedException");
954	>	} catch (InterruptedException fail) {
955	>	threadFail("Unexpected InterruptedException");
956	>	}
957	>	}
958	>
959	>	/**
960	>	* Like Runnable, but with the freedom to throw anything.
961	>	* junit folks had the same idea:
962	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
963	>	*/
964	>	interface Action { public void run() throws Throwable; }
965	>
966	>	/**
967	>	* Runs all the given actions in parallel, failing if any fail.
968	>	* Useful for running multiple variants of tests that are
969	>	* necessarily individually slow because they must block.
970	>	*/
971	>	void testInParallel(Action ... actions) {
972	>	ExecutorService pool = Executors.newCachedThreadPool();
973	>	try (PoolCleaner cleaner = cleaner(pool)) {
974	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
975	>	for (final Action action : actions)
976	>	futures.add(pool.submit(new CheckedRunnable() {
977	>	public void realRun() throws Throwable { action.run();}}));
978	>	for (Future<?> future : futures)
979	>	try {
980	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
981	>	} catch (ExecutionException ex) {
982	>	threadUnexpectedException(ex.getCause());
983	>	} catch (Exception ex) {
984	>	threadUnexpectedException(ex);
985	>	}
986		}
987		}
988
989		/**
990	+	* A debugging tool to print stack traces of most threads, as jstack does.
991	+	* Uninteresting threads are filtered out.
992	+	*/
993	+	static void dumpTestThreads() {
994	+	SecurityManager sm = System.getSecurityManager();
995	+	if (sm != null) {
996	+	try {
997	+	System.setSecurityManager(null);
998	+	} catch (SecurityException giveUp) {
999	+	return;
1000	+	}
1001	+	}
1002	+
1003	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1004	+	System.err.println("------ stacktrace dump start ------");
1005	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1006	+	String name = info.getThreadName();
1007	+	if ("Signal Dispatcher".equals(name))
1008	+	continue;
1009	+	if ("Reference Handler".equals(name)
1010	+	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
1011	+	continue;
1012	+	if ("Finalizer".equals(name)
1013	+	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
1014	+	continue;
1015	+	if ("checkForWedgedTest".equals(name))
1016	+	continue;
1017	+	System.err.print(info);
1018	+	}
1019	+	System.err.println("------ stacktrace dump end ------");
1020	+
1021	+	if (sm != null) System.setSecurityManager(sm);
1022	+	}
1023	+
1024	+	/**
1025		* Checks that thread does not terminate within the default
1026		* millisecond delay of {@code timeoutMillis()}.
1027		*/
#	Line 515 | Line 1037 | public class JSR166TestCase extends Test
1037		// No need to optimize the failing case via Thread.join.
1038		delay(millis);
1039		assertTrue(thread.isAlive());
1040	<	} catch (InterruptedException ie) {
1041	<	fail("Unexpected InterruptedException");
1040	>	} catch (InterruptedException fail) {
1041	>	threadFail("Unexpected InterruptedException");
1042	>	}
1043	>	}
1044	>
1045	>	/**
1046	>	* Checks that the threads do not terminate within the default
1047	>	* millisecond delay of {@code timeoutMillis()}.
1048	>	*/
1049	>	void assertThreadsStayAlive(Thread... threads) {
1050	>	assertThreadsStayAlive(timeoutMillis(), threads);
1051	>	}
1052	>
1053	>	/**
1054	>	* Checks that the threads do not terminate within the given millisecond delay.
1055	>	*/
1056	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1057	>	try {
1058	>	// No need to optimize the failing case via Thread.join.
1059	>	delay(millis);
1060	>	for (Thread thread : threads)
1061	>	assertTrue(thread.isAlive());
1062	>	} catch (InterruptedException fail) {
1063	>	threadFail("Unexpected InterruptedException");
1064		}
1065		}
1066
#	Line 537 | Line 1081 | public class JSR166TestCase extends Test
1081		future.get(timeoutMillis, MILLISECONDS);
1082		shouldThrow();
1083		} catch (TimeoutException success) {
1084	<	} catch (Exception e) {
1085	<	threadUnexpectedException(e);
1084	>	} catch (Exception fail) {
1085	>	threadUnexpectedException(fail);
1086		} finally { future.cancel(true); }
1087		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1088		}
#	Line 582 | Line 1126 | public class JSR166TestCase extends Test
1126		public static final Integer m6  = new Integer(-6);
1127		public static final Integer m10 = new Integer(-10);
1128
585	–
1129		/**
1130		* Runs Runnable r with a security policy that permits precisely
1131		* the specified permissions.  If there is no current security
#	Line 594 | Line 1137 | public class JSR166TestCase extends Test
1137		SecurityManager sm = System.getSecurityManager();
1138		if (sm == null) {
1139		r.run();
1140	+	}
1141	+	runWithSecurityManagerWithPermissions(r, permissions);
1142	+	}
1143	+
1144	+	/**
1145	+	* Runs Runnable r with a security policy that permits precisely
1146	+	* the specified permissions.  If there is no current security
1147	+	* manager, a temporary one is set for the duration of the
1148	+	* Runnable.  We require that any security manager permit
1149	+	* getPolicy/setPolicy.
1150	+	*/
1151	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1152	+	Permission... permissions) {
1153	+	SecurityManager sm = System.getSecurityManager();
1154	+	if (sm == null) {
1155		Policy savedPolicy = Policy.getPolicy();
1156		try {
1157		Policy.setPolicy(permissivePolicy());
1158		System.setSecurityManager(new SecurityManager());
1159	<	runWithPermissions(r, permissions);
1159	>	runWithSecurityManagerWithPermissions(r, permissions);
1160		} finally {
1161		System.setSecurityManager(null);
1162		Policy.setPolicy(savedPolicy);
#	Line 646 | Line 1204 | public class JSR166TestCase extends Test
1204		return perms.implies(p);
1205		}
1206		public void refresh() {}
1207	+	public String toString() {
1208	+	List<Permission> ps = new ArrayList<Permission>();
1209	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1210	+	ps.add(e.nextElement());
1211	+	return "AdjustablePolicy with permissions " + ps;
1212	+	}
1213		}
1214
1215		/**
#	Line 674 | Line 1238 | public class JSR166TestCase extends Test
1238		void sleep(long millis) {
1239		try {
1240		delay(millis);
1241	<	} catch (InterruptedException ie) {
1241	>	} catch (InterruptedException fail) {
1242		AssertionFailedError afe =
1243		new AssertionFailedError("Unexpected InterruptedException");
1244	<	afe.initCause(ie);
1244	>	afe.initCause(fail);
1245		throw afe;
1246		}
1247		}
1248
1249		/**
1250	<	* Waits up to the specified number of milliseconds for the given
1250	>	* Spin-waits up to the specified number of milliseconds for the given
1251		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1252		*/
1253		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1254	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
691	<	long t0 = System.nanoTime();
1254	>	long startTime = 0L;
1255		for (;;) {
1256		Thread.State s = thread.getState();
1257		if (s == Thread.State.BLOCKED ||
#	Line 697 | Line 1260 | public class JSR166TestCase extends Test
1260		return;
1261		else if (s == Thread.State.TERMINATED)
1262		fail("Unexpected thread termination");
1263	<	else if (System.nanoTime() - t0 > timeoutNanos) {
1263	>	else if (startTime == 0L)
1264	>	startTime = System.nanoTime();
1265	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1266		threadAssertTrue(thread.isAlive());
1267		return;
1268		}
#	Line 716 | Line 1281 | public class JSR166TestCase extends Test
1281		/**
1282		* Returns the number of milliseconds since time given by
1283		* startNanoTime, which must have been previously returned from a
1284	<	* call to {@link System.nanoTime()}.
1284	>	* call to {@link System#nanoTime()}.
1285		*/
1286	<	long millisElapsedSince(long startNanoTime) {
1286	>	static long millisElapsedSince(long startNanoTime) {
1287		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1288		}
1289
1290	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1291	+	//         long startTime = System.nanoTime();
1292	+	//         try {
1293	+	//             r.run();
1294	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1295	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1296	+	//             throw new AssertionFailedError("did not return promptly");
1297	+	//     }
1298	+
1299	+	//     void assertTerminatesPromptly(Runnable r) {
1300	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1301	+	//     }
1302	+
1303	+	/**
1304	+	* Checks that timed f.get() returns the expected value, and does not
1305	+	* wait for the timeout to elapse before returning.
1306	+	*/
1307	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1308	+	long startTime = System.nanoTime();
1309	+	try {
1310	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1311	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1312	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1313	+	throw new AssertionFailedError("timed get did not return promptly");
1314	+	}
1315	+
1316	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1317	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1318	+	}
1319	+
1320		/**
1321		* Returns a new started daemon Thread running the given runnable.
1322		*/
#	Line 740 | Line 1335 | public class JSR166TestCase extends Test
1335		void awaitTermination(Thread t, long timeoutMillis) {
1336		try {
1337		t.join(timeoutMillis);
1338	<	} catch (InterruptedException ie) {
1339	<	threadUnexpectedException(ie);
1338	>	} catch (InterruptedException fail) {
1339	>	threadUnexpectedException(fail);
1340		} finally {
1341		if (t.getState() != Thread.State.TERMINATED) {
1342		t.interrupt();
1343	<	fail("Test timed out");
1343	>	threadFail("timed out waiting for thread to terminate");
1344		}
1345		}
1346		}
#	Line 767 | Line 1362 | public class JSR166TestCase extends Test
1362		public final void run() {
1363		try {
1364		realRun();
1365	<	} catch (Throwable t) {
1366	<	threadUnexpectedException(t);
1365	>	} catch (Throwable fail) {
1366	>	threadUnexpectedException(fail);
1367		}
1368		}
1369		}
#	Line 822 | Line 1417 | public class JSR166TestCase extends Test
1417		threadShouldThrow("InterruptedException");
1418		} catch (InterruptedException success) {
1419		threadAssertFalse(Thread.interrupted());
1420	<	} catch (Throwable t) {
1421	<	threadUnexpectedException(t);
1420	>	} catch (Throwable fail) {
1421	>	threadUnexpectedException(fail);
1422		}
1423		}
1424		}
#	Line 834 | Line 1429 | public class JSR166TestCase extends Test
1429		public final T call() {
1430		try {
1431		return realCall();
1432	<	} catch (Throwable t) {
1433	<	threadUnexpectedException(t);
1432	>	} catch (Throwable fail) {
1433	>	threadUnexpectedException(fail);
1434		return null;
1435		}
1436		}
#	Line 852 | Line 1447 | public class JSR166TestCase extends Test
1447		return result;
1448		} catch (InterruptedException success) {
1449		threadAssertFalse(Thread.interrupted());
1450	<	} catch (Throwable t) {
1451	<	threadUnexpectedException(t);
1450	>	} catch (Throwable fail) {
1451	>	threadUnexpectedException(fail);
1452		}
1453		return null;
1454		}
#	Line 870 | Line 1465 | public class JSR166TestCase extends Test
1465		public static final String TEST_STRING = "a test string";
1466
1467		public static class StringTask implements Callable<String> {
1468	<	public String call() { return TEST_STRING; }
1468	>	final String value;
1469	>	public StringTask() { this(TEST_STRING); }
1470	>	public StringTask(String value) { this.value = value; }
1471	>	public String call() { return value; }
1472		}
1473
1474		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 883 | Line 1481 | public class JSR166TestCase extends Test
1481		}};
1482		}
1483
1484	<	public Runnable awaiter(final CountDownLatch latch) {
1484	>	public Runnable countDowner(final CountDownLatch latch) {
1485		return new CheckedRunnable() {
1486		public void realRun() throws InterruptedException {
1487	<	await(latch);
1487	>	latch.countDown();
1488		}};
1489		}
1490
1491	+	class LatchAwaiter extends CheckedRunnable {
1492	+	static final int NEW = 0;
1493	+	static final int RUNNING = 1;
1494	+	static final int DONE = 2;
1495	+	final CountDownLatch latch;
1496	+	int state = NEW;
1497	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1498	+	public void realRun() throws InterruptedException {
1499	+	state = 1;
1500	+	await(latch);
1501	+	state = 2;
1502	+	}
1503	+	}
1504	+
1505	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1506	+	return new LatchAwaiter(latch);
1507	+	}
1508	+
1509	+	public void await(CountDownLatch latch, long timeoutMillis) {
1510	+	try {
1511	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1512	+	fail("timed out waiting for CountDownLatch for "
1513	+	+ (timeoutMillis/1000) + " sec");
1514	+	} catch (Throwable fail) {
1515	+	threadUnexpectedException(fail);
1516	+	}
1517	+	}
1518	+
1519		public void await(CountDownLatch latch) {
1520	+	await(latch, LONG_DELAY_MS);
1521	+	}
1522	+
1523	+	public void await(Semaphore semaphore) {
1524		try {
1525	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1526	<	} catch (Throwable t) {
1527	<	threadUnexpectedException(t);
1525	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1526	>	fail("timed out waiting for Semaphore for "
1527	>	+ (LONG_DELAY_MS/1000) + " sec");
1528	>	} catch (Throwable fail) {
1529	>	threadUnexpectedException(fail);
1530		}
1531		}
1532
#	Line 1085 | Line 1717 | public class JSR166TestCase extends Test
1717		public abstract class CheckedRecursiveAction extends RecursiveAction {
1718		protected abstract void realCompute() throws Throwable;
1719
1720	<	public final void compute() {
1720	>	@Override protected final void compute() {
1721		try {
1722		realCompute();
1723	<	} catch (Throwable t) {
1724	<	threadUnexpectedException(t);
1723	>	} catch (Throwable fail) {
1724	>	threadUnexpectedException(fail);
1725		}
1726		}
1727		}
#	Line 1100 | Line 1732 | public class JSR166TestCase extends Test
1732		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1733		protected abstract T realCompute() throws Throwable;
1734
1735	<	public final T compute() {
1735	>	@Override protected final T compute() {
1736		try {
1737		return realCompute();
1738	<	} catch (Throwable t) {
1739	<	threadUnexpectedException(t);
1738	>	} catch (Throwable fail) {
1739	>	threadUnexpectedException(fail);
1740		return null;
1741		}
1742		}
#	Line 1119 | Line 1751 | public class JSR166TestCase extends Test
1751		}
1752
1753		/**
1754	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1755	<	* of throwing checked exceptions.
1754	>	* A CyclicBarrier that uses timed await and fails with
1755	>	* AssertionFailedErrors instead of throwing checked exceptions.
1756		*/
1757		public class CheckedBarrier extends CyclicBarrier {
1758		public CheckedBarrier(int parties) { super(parties); }
1759
1760		public int await() {
1761		try {
1762	<	return super.await();
1763	<	} catch (Exception e) {
1762	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1763	>	} catch (TimeoutException timedOut) {
1764	>	throw new AssertionFailedError("timed out");
1765	>	} catch (Exception fail) {
1766		AssertionFailedError afe =
1767	<	new AssertionFailedError("Unexpected exception: " + e);
1768	<	afe.initCause(e);
1767	>	new AssertionFailedError("Unexpected exception: " + fail);
1768	>	afe.initCause(fail);
1769		throw afe;
1770		}
1771		}
#	Line 1159 | Line 1793 | public class JSR166TestCase extends Test
1793		q.remove();
1794		shouldThrow();
1795		} catch (NoSuchElementException success) {}
1796	<	} catch (InterruptedException ie) {
1163	<	threadUnexpectedException(ie);
1164	<	}
1796	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1797		}
1798
1799	<	@SuppressWarnings("unchecked")
1800	<	<T> T serialClone(T o) {
1799	>	void assertSerialEquals(Object x, Object y) {
1800	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1801	>	}
1802	>
1803	>	void assertNotSerialEquals(Object x, Object y) {
1804	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1805	>	}
1806	>
1807	>	byte[] serialBytes(Object o) {
1808		try {
1809		ByteArrayOutputStream bos = new ByteArrayOutputStream();
1810		ObjectOutputStream oos = new ObjectOutputStream(bos);
1811		oos.writeObject(o);
1812		oos.flush();
1813		oos.close();
1814	<	ByteArrayInputStream bin =
1815	<	new ByteArrayInputStream(bos.toByteArray());
1816	<	ObjectInputStream ois = new ObjectInputStream(bin);
1817	<	return (T) ois.readObject();
1818	<	} catch (Throwable t) {
1819	<	threadUnexpectedException(t);
1814	>	return bos.toByteArray();
1815	>	} catch (Throwable fail) {
1816	>	threadUnexpectedException(fail);
1817	>	return new byte[0];
1818	>	}
1819	>	}
1820	>
1821	>	@SuppressWarnings("unchecked")
1822	>	<T> T serialClone(T o) {
1823	>	try {
1824	>	ObjectInputStream ois = new ObjectInputStream
1825	>	(new ByteArrayInputStream(serialBytes(o)));
1826	>	T clone = (T) ois.readObject();
1827	>	assertSame(o.getClass(), clone.getClass());
1828	>	return clone;
1829	>	} catch (Throwable fail) {
1830	>	threadUnexpectedException(fail);
1831		return null;
1832		}
1833		}
1834	+
1835	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1836	+	Runnable... throwingActions) {
1837	+	for (Runnable throwingAction : throwingActions) {
1838	+	boolean threw = false;
1839	+	try { throwingAction.run(); }
1840	+	catch (Throwable t) {
1841	+	threw = true;
1842	+	if (!expectedExceptionClass.isInstance(t)) {
1843	+	AssertionFailedError afe =
1844	+	new AssertionFailedError
1845	+	("Expected " + expectedExceptionClass.getName() +
1846	+	", got " + t.getClass().getName());
1847	+	afe.initCause(t);
1848	+	threadUnexpectedException(afe);
1849	+	}
1850	+	}
1851	+	if (!threw)
1852	+	shouldThrow(expectedExceptionClass.getName());
1853	+	}
1854	+	}
1855	+
1856	+	public void assertIteratorExhausted(Iterator<?> it) {
1857	+	try {
1858	+	it.next();
1859	+	shouldThrow();
1860	+	} catch (NoSuchElementException success) {}
1861	+	assertFalse(it.hasNext());
1862	+	}
1863	+
1864	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1865	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1866	+	}
1867	+
1868	+	public Runnable runnableThrowing(final RuntimeException ex) {
1869	+	return new Runnable() { public void run() { throw ex; }};
1870	+	}
1871	+
1872	+	/** A reusable thread pool to be shared by tests. */
1873	+	static final ExecutorService cachedThreadPool =
1874	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1875	+	1000L, MILLISECONDS,
1876	+	new SynchronousQueue<Runnable>());
1877	+
1878		}

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