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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.75 by jsr166, Tue May 3 06:08:49 2011 UTC vs.
Revision 1.197 by jsr166, Wed Jun 22 14:40:36 2016 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.Arrays;
11	<	import java.util.NoSuchElementException;
12	<	import java.util.PropertyPermission;
13	<	import java.util.concurrent.*;
14	<	import java.util.concurrent.atomic.AtomicReference;
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;
#	Line 21 | Line 38 | 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,
#	Line 32 | Line 84 | import java.security.SecurityPermission;
84		*
85		* <ol>
86		*
87	<	* <li> All assertions in code running in generated threads must use
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
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 {@code
101		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 54 | Line 106 | import java.security.SecurityPermission;
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
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.</li>
114	>	* using Executors.
115		*
116		* </ol>
117		*
118	<	* <p> <b>Other notes</b>
118	>	* <p><b>Other notes</b>
119		* <ul>
120		*
121	<	* <li> Usually, there is one testcase method per JSR166 method
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
75	<	* isolation.</li>
126	>	* cover multiple methods when they cannot be tested in isolation.
127		*
128	<	* <li> The documentation style for testcases is to provide as javadoc
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.</li>
131	>	* the property is tested. To find out, read the code.
132		*
133	<	* <li> These tests are "conformance tests", and do not attempt to
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.</li>
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.</li>
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.</li>
144	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
145	>	* runs all JSR166 unit tests.
146		*
147		* </ul>
148		*/
#	Line 103 | Line 154 | public class JSR166TestCase extends Test
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		*/
#	Line 116 | Line 174 | public class JSR166TestCase extends Test
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	<	if (profileTests)
295	<	runTestProfiled();
296	<	else
297	<	super.runTest();
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	<	long t0 = System.nanoTime();
305	<	try {
304	>	for (int i = 0; i < 2; i++) {
305	>	long startTime = System.nanoTime();
306		super.runTest();
307	<	} finally {
308	<	long elapsedMillis =
309	<	(System.nanoTime() - t0) / (1000L * 1000L);
310	<	if (elapsedMillis >= profileThreshold)
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
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	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
363	<
364	<	Test s = suite();
365	<	for (int i = 0; i < iters; ++i) {
151	<	junit.textui.TestRunner.run(s);
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		}
155	–	System.exit(0);
369		}
370
371		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 168 | Line 381 | public class JSR166TestCase extends Test
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	<	return newTestSuite(
432	>	// Java7+ test classes
433	>	TestSuite suite = newTestSuite(
434		ForkJoinPoolTest.suite(),
435		ForkJoinTaskTest.suite(),
436		RecursiveActionTest.suite(),
#	Line 237 | Line 495 | public class JSR166TestCase extends Test
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	+	"AtomicBoolean9Test",
525	+	"AtomicInteger9Test",
526	+	"AtomicIntegerArray9Test",
527	+	"AtomicLong9Test",
528	+	"AtomicLongArray9Test",
529	+	"AtomicReference9Test",
530	+	"AtomicReferenceArray9Test",
531	+	"ExecutorCompletionService9Test",
532	+	};
533	+	addNamedTestClasses(suite, java9TestClassNames);
534	+	}
535	+
536	+	return suite;
537		}
538
539	+	/** Returns list of junit-style test method names in given class. */
540	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
541	+	Method[] methods = testClass.getDeclaredMethods();
542	+	ArrayList<String> names = new ArrayList<String>(methods.length);
543	+	for (Method method : methods) {
544	+	if (method.getName().startsWith("test")
545	+	&& Modifier.isPublic(method.getModifiers())
546	+	// method.getParameterCount() requires jdk8+
547	+	&& method.getParameterTypes().length == 0) {
548	+	names.add(method.getName());
549	+	}
550	+	}
551	+	return names;
552	+	}
553	+
554	+	/**
555	+	* Returns junit-style testSuite for the given test class, but
556	+	* parameterized by passing extra data to each test.
557	+	*/
558	+	public static <ExtraData> Test parameterizedTestSuite
559	+	(Class<? extends JSR166TestCase> testClass,
560	+	Class<ExtraData> dataClass,
561	+	ExtraData data) {
562	+	try {
563	+	TestSuite suite = new TestSuite();
564	+	Constructor c =
565	+	testClass.getDeclaredConstructor(dataClass, String.class);
566	+	for (String methodName : testMethodNames(testClass))
567	+	suite.addTest((Test) c.newInstance(data, methodName));
568	+	return suite;
569	+	} catch (Exception e) {
570	+	throw new Error(e);
571	+	}
572	+	}
573	+
574	+	/**
575	+	* Returns junit-style testSuite for the jdk8 extension of the
576	+	* given test class, but parameterized by passing extra data to
577	+	* each test.  Uses reflection to allow compilation in jdk7.
578	+	*/
579	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
580	+	(Class<? extends JSR166TestCase> testClass,
581	+	Class<ExtraData> dataClass,
582	+	ExtraData data) {
583	+	if (atLeastJava8()) {
584	+	String name = testClass.getName();
585	+	String name8 = name.replaceAll("Test$", "8Test");
586	+	if (name.equals(name8)) throw new Error(name);
587	+	try {
588	+	return (Test)
589	+	Class.forName(name8)
590	+	.getMethod("testSuite", new Class[] { dataClass })
591	+	.invoke(null, data);
592	+	} catch (Exception e) {
593	+	throw new Error(e);
594	+	}
595	+	} else {
596	+	return new TestSuite();
597	+	}
598	+	}
599	+
600	+	// Delays for timing-dependent tests, in milliseconds.
601
602		public static long SHORT_DELAY_MS;
603		public static long SMALL_DELAY_MS;
604		public static long MEDIUM_DELAY_MS;
605		public static long LONG_DELAY_MS;
606
248	–
607		/**
608	<	* Returns the shortest timed delay. This could
609	<	* be reimplemented to use for example a Property.
608	>	* Returns the shortest timed delay. This can be scaled up for
609	>	* slow machines using the jsr166.delay.factor system property,
610	>	* or via jtreg's -timeoutFactor: flag.
611	>	* http://openjdk.java.net/jtreg/command-help.html
612		*/
613		protected long getShortDelay() {
614	<	return 50;
614	>	return (long) (50 * delayFactor);
615		}
616
257	–
617		/**
618		* Sets delays as multiples of SHORT_DELAY.
619		*/
#	Line 266 | Line 625 | public class JSR166TestCase extends Test
625		}
626
627		/**
628	+	* Returns a timeout in milliseconds to be used in tests that
629	+	* verify that operations block or time out.
630	+	*/
631	+	long timeoutMillis() {
632	+	return SHORT_DELAY_MS / 4;
633	+	}
634	+
635	+	/**
636	+	* Returns a new Date instance representing a time at least
637	+	* delayMillis milliseconds in the future.
638	+	*/
639	+	Date delayedDate(long delayMillis) {
640	+	// Add 1 because currentTimeMillis is known to round into the past.
641	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
642	+	}
643	+
644	+	/**
645		* The first exception encountered if any threadAssertXXX method fails.
646		*/
647		private final AtomicReference<Throwable> threadFailure
#	Line 278 | Line 654 | public class JSR166TestCase extends Test
654		* the same test have no effect.
655		*/
656		public void threadRecordFailure(Throwable t) {
657	+	System.err.println(t);
658	+	dumpTestThreads();
659		threadFailure.compareAndSet(null, t);
660		}
661
#	Line 285 | Line 663 | public class JSR166TestCase extends Test
663		setDelays();
664		}
665
666	+	void tearDownFail(String format, Object... args) {
667	+	String msg = toString() + ": " + String.format(format, args);
668	+	System.err.println(msg);
669	+	dumpTestThreads();
670	+	throw new AssertionFailedError(msg);
671	+	}
672	+
673		/**
674	+	* Extra checks that get done for all test cases.
675	+	*
676		* Triggers test case failure if any thread assertions have failed,
677		* by rethrowing, in the test harness thread, any exception recorded
678		* earlier by threadRecordFailure.
679	+	*
680	+	* Triggers test case failure if interrupt status is set in the main thread.
681		*/
682		public void tearDown() throws Exception {
683		Throwable t = threadFailure.getAndSet(null);
#	Line 306 | Line 695 | public class JSR166TestCase extends Test
695		throw afe;
696		}
697		}
698	+
699	+	if (Thread.interrupted())
700	+	tearDownFail("interrupt status set in main thread");
701	+
702	+	checkForkJoinPoolThreadLeaks();
703	+	}
704	+
705	+	/**
706	+	* Finds missing PoolCleaners
707	+	*/
708	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
709	+	Thread[] survivors = new Thread[7];
710	+	int count = Thread.enumerate(survivors);
711	+	for (int i = 0; i < count; i++) {
712	+	Thread thread = survivors[i];
713	+	String name = thread.getName();
714	+	if (name.startsWith("ForkJoinPool-")) {
715	+	// give thread some time to terminate
716	+	thread.join(LONG_DELAY_MS);
717	+	if (thread.isAlive())
718	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
719	+	thread);
720	+	}
721	+	}
722	+
723	+	if (!ForkJoinPool.commonPool()
724	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
725	+	tearDownFail("ForkJoin common pool thread stuck");
726		}
727
728		/**
#	Line 318 | Line 735 | public class JSR166TestCase extends Test
735		fail(reason);
736		} catch (AssertionFailedError t) {
737		threadRecordFailure(t);
738	<	fail(reason);
738	>	throw t;
739		}
740		}
741
#	Line 386 | Line 803 | public class JSR166TestCase extends Test
803		public void threadAssertEquals(Object x, Object y) {
804		try {
805		assertEquals(x, y);
806	<	} catch (AssertionFailedError t) {
807	<	threadRecordFailure(t);
808	<	throw t;
809	<	} catch (Throwable t) {
810	<	threadUnexpectedException(t);
806	>	} catch (AssertionFailedError fail) {
807	>	threadRecordFailure(fail);
808	>	throw fail;
809	>	} catch (Throwable fail) {
810	>	threadUnexpectedException(fail);
811		}
812		}
813
#	Line 402 | Line 819 | public class JSR166TestCase extends Test
819		public void threadAssertSame(Object x, Object y) {
820		try {
821		assertSame(x, y);
822	<	} catch (AssertionFailedError t) {
823	<	threadRecordFailure(t);
824	<	throw t;
822	>	} catch (AssertionFailedError fail) {
823	>	threadRecordFailure(fail);
824	>	throw fail;
825		}
826		}
827
#	Line 437 | Line 854 | public class JSR166TestCase extends Test
854		else {
855		AssertionFailedError afe =
856		new AssertionFailedError("unexpected exception: " + t);
857	<	t.initCause(t);
857	>	afe.initCause(t);
858		throw afe;
859		}
860		}
861
862		/**
863	+	* Delays, via Thread.sleep, for the given millisecond delay, but
864	+	* if the sleep is shorter than specified, may re-sleep or yield
865	+	* until time elapses.  Ensures that the given time, as measured
866	+	* by System.nanoTime(), has elapsed.
867	+	*/
868	+	static void delay(long millis) throws InterruptedException {
869	+	long nanos = millis * (1000 * 1000);
870	+	final long wakeupTime = System.nanoTime() + nanos;
871	+	do {
872	+	if (millis > 0L)
873	+	Thread.sleep(millis);
874	+	else // too short to sleep
875	+	Thread.yield();
876	+	nanos = wakeupTime - System.nanoTime();
877	+	millis = nanos / (1000 * 1000);
878	+	} while (nanos >= 0L);
879	+	}
880	+
881	+	/**
882	+	* Allows use of try-with-resources with per-test thread pools.
883	+	*/
884	+	class PoolCleaner implements AutoCloseable {
885	+	private final ExecutorService pool;
886	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
887	+	public void close() { joinPool(pool); }
888	+	}
889	+
890	+	/**
891	+	* An extension of PoolCleaner that has an action to release the pool.
892	+	*/
893	+	class PoolCleanerWithReleaser extends PoolCleaner {
894	+	private final Runnable releaser;
895	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
896	+	super(pool);
897	+	this.releaser = releaser;
898	+	}
899	+	public void close() {
900	+	try {
901	+	releaser.run();
902	+	} finally {
903	+	super.close();
904	+	}
905	+	}
906	+	}
907	+
908	+	PoolCleaner cleaner(ExecutorService pool) {
909	+	return new PoolCleaner(pool);
910	+	}
911	+
912	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
913	+	return new PoolCleanerWithReleaser(pool, releaser);
914	+	}
915	+
916	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
917	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
918	+	}
919	+
920	+	Runnable releaser(final CountDownLatch latch) {
921	+	return new Runnable() { public void run() {
922	+	do { latch.countDown(); }
923	+	while (latch.getCount() > 0);
924	+	}};
925	+	}
926	+
927	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
928	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
929	+	}
930	+
931	+	Runnable releaser(final AtomicBoolean flag) {
932	+	return new Runnable() { public void run() { flag.set(true); }};
933	+	}
934	+
935	+	/**
936		* Waits out termination of a thread pool or fails doing so.
937		*/
938	<	public void joinPool(ExecutorService exec) {
938	>	void joinPool(ExecutorService pool) {
939		try {
940	<	exec.shutdown();
941	<	assertTrue("ExecutorService did not terminate in a timely manner",
942	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
940	>	pool.shutdown();
941	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
942	>	try {
943	>	threadFail("ExecutorService " + pool +
944	>	" did not terminate in a timely manner");
945	>	} finally {
946	>	// last resort, for the benefit of subsequent tests
947	>	pool.shutdownNow();
948	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
949	>	}
950	>	}
951		} catch (SecurityException ok) {
952		// Allowed in case test doesn't have privs
953	<	} catch (InterruptedException ie) {
954	<	fail("Unexpected InterruptedException");
953	>	} catch (InterruptedException fail) {
954	>	threadFail("Unexpected InterruptedException");
955	>	}
956	>	}
957	>
958	>	/**
959	>	* Like Runnable, but with the freedom to throw anything.
960	>	* junit folks had the same idea:
961	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
962	>	*/
963	>	interface Action { public void run() throws Throwable; }
964	>
965	>	/**
966	>	* Runs all the given actions in parallel, failing if any fail.
967	>	* Useful for running multiple variants of tests that are
968	>	* necessarily individually slow because they must block.
969	>	*/
970	>	void testInParallel(Action ... actions) {
971	>	ExecutorService pool = Executors.newCachedThreadPool();
972	>	try (PoolCleaner cleaner = cleaner(pool)) {
973	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
974	>	for (final Action action : actions)
975	>	futures.add(pool.submit(new CheckedRunnable() {
976	>	public void realRun() throws Throwable { action.run();}}));
977	>	for (Future<?> future : futures)
978	>	try {
979	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
980	>	} catch (ExecutionException ex) {
981	>	threadUnexpectedException(ex.getCause());
982	>	} catch (Exception ex) {
983	>	threadUnexpectedException(ex);
984	>	}
985		}
986		}
987
988	+	/**
989	+	* A debugging tool to print stack traces of most threads, as jstack does.
990	+	* Uninteresting threads are filtered out.
991	+	*/
992	+	static void dumpTestThreads() {
993	+	SecurityManager sm = System.getSecurityManager();
994	+	if (sm != null) {
995	+	try {
996	+	System.setSecurityManager(null);
997	+	} catch (SecurityException giveUp) {
998	+	return;
999	+	}
1000	+	}
1001	+
1002	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1003	+	System.err.println("------ stacktrace dump start ------");
1004	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1005	+	String name = info.getThreadName();
1006	+	if ("Signal Dispatcher".equals(name))
1007	+	continue;
1008	+	if ("Reference Handler".equals(name)
1009	+	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
1010	+	continue;
1011	+	if ("Finalizer".equals(name)
1012	+	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
1013	+	continue;
1014	+	if ("checkForWedgedTest".equals(name))
1015	+	continue;
1016	+	System.err.print(info);
1017	+	}
1018	+	System.err.println("------ stacktrace dump end ------");
1019	+
1020	+	if (sm != null) System.setSecurityManager(sm);
1021	+	}
1022	+
1023	+	/**
1024	+	* Checks that thread does not terminate within the default
1025	+	* millisecond delay of {@code timeoutMillis()}.
1026	+	*/
1027	+	void assertThreadStaysAlive(Thread thread) {
1028	+	assertThreadStaysAlive(thread, timeoutMillis());
1029	+	}
1030	+
1031	+	/**
1032	+	* Checks that thread does not terminate within the given millisecond delay.
1033	+	*/
1034	+	void assertThreadStaysAlive(Thread thread, long millis) {
1035	+	try {
1036	+	// No need to optimize the failing case via Thread.join.
1037	+	delay(millis);
1038	+	assertTrue(thread.isAlive());
1039	+	} catch (InterruptedException fail) {
1040	+	threadFail("Unexpected InterruptedException");
1041	+	}
1042	+	}
1043	+
1044	+	/**
1045	+	* Checks that the threads do not terminate within the default
1046	+	* millisecond delay of {@code timeoutMillis()}.
1047	+	*/
1048	+	void assertThreadsStayAlive(Thread... threads) {
1049	+	assertThreadsStayAlive(timeoutMillis(), threads);
1050	+	}
1051	+
1052	+	/**
1053	+	* Checks that the threads do not terminate within the given millisecond delay.
1054	+	*/
1055	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1056	+	try {
1057	+	// No need to optimize the failing case via Thread.join.
1058	+	delay(millis);
1059	+	for (Thread thread : threads)
1060	+	assertTrue(thread.isAlive());
1061	+	} catch (InterruptedException fail) {
1062	+	threadFail("Unexpected InterruptedException");
1063	+	}
1064	+	}
1065	+
1066	+	/**
1067	+	* Checks that future.get times out, with the default timeout of
1068	+	* {@code timeoutMillis()}.
1069	+	*/
1070	+	void assertFutureTimesOut(Future future) {
1071	+	assertFutureTimesOut(future, timeoutMillis());
1072	+	}
1073	+
1074	+	/**
1075	+	* Checks that future.get times out, with the given millisecond timeout.
1076	+	*/
1077	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1078	+	long startTime = System.nanoTime();
1079	+	try {
1080	+	future.get(timeoutMillis, MILLISECONDS);
1081	+	shouldThrow();
1082	+	} catch (TimeoutException success) {
1083	+	} catch (Exception fail) {
1084	+	threadUnexpectedException(fail);
1085	+	} finally { future.cancel(true); }
1086	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1087	+	}
1088
1089		/**
1090		* Fails with message "should throw exception".
#	Line 497 | Line 1125 | public class JSR166TestCase extends Test
1125		public static final Integer m6  = new Integer(-6);
1126		public static final Integer m10 = new Integer(-10);
1127
500	–
1128		/**
1129		* Runs Runnable r with a security policy that permits precisely
1130		* the specified permissions.  If there is no current security
#	Line 509 | Line 1136 | public class JSR166TestCase extends Test
1136		SecurityManager sm = System.getSecurityManager();
1137		if (sm == null) {
1138		r.run();
1139	+	}
1140	+	runWithSecurityManagerWithPermissions(r, permissions);
1141	+	}
1142	+
1143	+	/**
1144	+	* Runs Runnable r with a security policy that permits precisely
1145	+	* the specified permissions.  If there is no current security
1146	+	* manager, a temporary one is set for the duration of the
1147	+	* Runnable.  We require that any security manager permit
1148	+	* getPolicy/setPolicy.
1149	+	*/
1150	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1151	+	Permission... permissions) {
1152	+	SecurityManager sm = System.getSecurityManager();
1153	+	if (sm == null) {
1154		Policy savedPolicy = Policy.getPolicy();
1155		try {
1156		Policy.setPolicy(permissivePolicy());
1157		System.setSecurityManager(new SecurityManager());
1158	<	runWithPermissions(r, permissions);
1158	>	runWithSecurityManagerWithPermissions(r, permissions);
1159		} finally {
1160		System.setSecurityManager(null);
1161		Policy.setPolicy(savedPolicy);
#	Line 561 | Line 1203 | public class JSR166TestCase extends Test
1203		return perms.implies(p);
1204		}
1205		public void refresh() {}
1206	+	public String toString() {
1207	+	List<Permission> ps = new ArrayList<Permission>();
1208	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1209	+	ps.add(e.nextElement());
1210	+	return "AdjustablePolicy with permissions " + ps;
1211	+	}
1212		}
1213
1214		/**
#	Line 588 | Line 1236 | public class JSR166TestCase extends Test
1236		*/
1237		void sleep(long millis) {
1238		try {
1239	<	Thread.sleep(millis);
1240	<	} catch (InterruptedException ie) {
1239	>	delay(millis);
1240	>	} catch (InterruptedException fail) {
1241		AssertionFailedError afe =
1242		new AssertionFailedError("Unexpected InterruptedException");
1243	<	afe.initCause(ie);
1243	>	afe.initCause(fail);
1244		throw afe;
1245		}
1246		}
1247
1248		/**
1249	<	* Sleeps until the timeout has elapsed, or interrupted.
602	<	* Does <em>NOT</em> throw InterruptedException.
603	<	*/
604	<	void sleepTillInterrupted(long timeoutMillis) {
605	<	try {
606	<	Thread.sleep(timeoutMillis);
607	<	} catch (InterruptedException wakeup) {}
608	<	}
609	<
610	<	/**
611	<	* Waits up to the specified number of milliseconds for the given
1249	>	* Spin-waits up to the specified number of milliseconds for the given
1250		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1251		*/
1252		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1253	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
616	<	long t0 = System.nanoTime();
1253	>	long startTime = System.nanoTime();
1254		for (;;) {
1255		Thread.State s = thread.getState();
1256		if (s == Thread.State.BLOCKED ||
#	Line 622 | Line 1259 | public class JSR166TestCase extends Test
1259		return;
1260		else if (s == Thread.State.TERMINATED)
1261		fail("Unexpected thread termination");
1262	<	else if (System.nanoTime() - t0 > timeoutNanos) {
1262	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1263		threadAssertTrue(thread.isAlive());
1264		return;
1265		}
#	Line 641 | Line 1278 | public class JSR166TestCase extends Test
1278		/**
1279		* Returns the number of milliseconds since time given by
1280		* startNanoTime, which must have been previously returned from a
1281	<	* call to {@link System.nanoTime()}.
1281	>	* call to {@link System#nanoTime()}.
1282		*/
1283	<	long millisElapsedSince(long startNanoTime) {
1283	>	static long millisElapsedSince(long startNanoTime) {
1284		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1285		}
1286
1287	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1288	+	//         long startTime = System.nanoTime();
1289	+	//         try {
1290	+	//             r.run();
1291	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1292	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1293	+	//             throw new AssertionFailedError("did not return promptly");
1294	+	//     }
1295	+
1296	+	//     void assertTerminatesPromptly(Runnable r) {
1297	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1298	+	//     }
1299	+
1300	+	/**
1301	+	* Checks that timed f.get() returns the expected value, and does not
1302	+	* wait for the timeout to elapse before returning.
1303	+	*/
1304	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1305	+	long startTime = System.nanoTime();
1306	+	try {
1307	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1308	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1309	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1310	+	throw new AssertionFailedError("timed get did not return promptly");
1311	+	}
1312	+
1313	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1314	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1315	+	}
1316	+
1317		/**
1318		* Returns a new started daemon Thread running the given runnable.
1319		*/
#	Line 665 | Line 1332 | public class JSR166TestCase extends Test
1332		void awaitTermination(Thread t, long timeoutMillis) {
1333		try {
1334		t.join(timeoutMillis);
1335	<	} catch (InterruptedException ie) {
1336	<	threadUnexpectedException(ie);
1335	>	} catch (InterruptedException fail) {
1336	>	threadUnexpectedException(fail);
1337		} finally {
1338	<	if (t.isAlive()) {
1338	>	if (t.getState() != Thread.State.TERMINATED) {
1339		t.interrupt();
1340	<	fail("Test timed out");
1340	>	threadFail("timed out waiting for thread to terminate");
1341		}
1342		}
1343		}
#	Line 692 | Line 1359 | public class JSR166TestCase extends Test
1359		public final void run() {
1360		try {
1361		realRun();
1362	<	} catch (Throwable t) {
1363	<	threadUnexpectedException(t);
1362	>	} catch (Throwable fail) {
1363	>	threadUnexpectedException(fail);
1364		}
1365		}
1366		}
#	Line 746 | Line 1413 | public class JSR166TestCase extends Test
1413		realRun();
1414		threadShouldThrow("InterruptedException");
1415		} catch (InterruptedException success) {
1416	<	} catch (Throwable t) {
1417	<	threadUnexpectedException(t);
1416	>	threadAssertFalse(Thread.interrupted());
1417	>	} catch (Throwable fail) {
1418	>	threadUnexpectedException(fail);
1419		}
1420		}
1421		}
#	Line 758 | Line 1426 | public class JSR166TestCase extends Test
1426		public final T call() {
1427		try {
1428		return realCall();
1429	<	} catch (Throwable t) {
1430	<	threadUnexpectedException(t);
1429	>	} catch (Throwable fail) {
1430	>	threadUnexpectedException(fail);
1431		return null;
1432		}
1433		}
#	Line 775 | Line 1443 | public class JSR166TestCase extends Test
1443		threadShouldThrow("InterruptedException");
1444		return result;
1445		} catch (InterruptedException success) {
1446	<	} catch (Throwable t) {
1447	<	threadUnexpectedException(t);
1446	>	threadAssertFalse(Thread.interrupted());
1447	>	} catch (Throwable fail) {
1448	>	threadUnexpectedException(fail);
1449		}
1450		return null;
1451		}
#	Line 793 | Line 1462 | public class JSR166TestCase extends Test
1462		public static final String TEST_STRING = "a test string";
1463
1464		public static class StringTask implements Callable<String> {
1465	<	public String call() { return TEST_STRING; }
1465	>	final String value;
1466	>	public StringTask() { this(TEST_STRING); }
1467	>	public StringTask(String value) { this.value = value; }
1468	>	public String call() { return value; }
1469		}
1470
1471		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 806 | Line 1478 | public class JSR166TestCase extends Test
1478		}};
1479		}
1480
1481	<	public Runnable awaiter(final CountDownLatch latch) {
1481	>	public Runnable countDowner(final CountDownLatch latch) {
1482		return new CheckedRunnable() {
1483		public void realRun() throws InterruptedException {
1484	<	latch.await();
1484	>	latch.countDown();
1485		}};
1486		}
1487
1488	+	class LatchAwaiter extends CheckedRunnable {
1489	+	static final int NEW = 0;
1490	+	static final int RUNNING = 1;
1491	+	static final int DONE = 2;
1492	+	final CountDownLatch latch;
1493	+	int state = NEW;
1494	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1495	+	public void realRun() throws InterruptedException {
1496	+	state = 1;
1497	+	await(latch);
1498	+	state = 2;
1499	+	}
1500	+	}
1501	+
1502	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1503	+	return new LatchAwaiter(latch);
1504	+	}
1505	+
1506	+	public void await(CountDownLatch latch, long timeoutMillis) {
1507	+	try {
1508	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1509	+	fail("timed out waiting for CountDownLatch for "
1510	+	+ (timeoutMillis/1000) + " sec");
1511	+	} catch (Throwable fail) {
1512	+	threadUnexpectedException(fail);
1513	+	}
1514	+	}
1515	+
1516	+	public void await(CountDownLatch latch) {
1517	+	await(latch, LONG_DELAY_MS);
1518	+	}
1519	+
1520	+	public void await(Semaphore semaphore) {
1521	+	try {
1522	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1523	+	fail("timed out waiting for Semaphore for "
1524	+	+ (LONG_DELAY_MS/1000) + " sec");
1525	+	} catch (Throwable fail) {
1526	+	threadUnexpectedException(fail);
1527	+	}
1528	+	}
1529	+
1530	+	//     /**
1531	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1532	+	//      */
1533	+	//     public void await(AtomicBoolean flag) {
1534	+	//         await(flag, LONG_DELAY_MS);
1535	+	//     }
1536	+
1537	+	//     /**
1538	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1539	+	//      */
1540	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1541	+	//         long startTime = System.nanoTime();
1542	+	//         while (!flag.get()) {
1543	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1544	+	//                 throw new AssertionFailedError("timed out");
1545	+	//             Thread.yield();
1546	+	//         }
1547	+	//     }
1548	+
1549		public static class NPETask implements Callable<String> {
1550		public String call() { throw new NullPointerException(); }
1551		}
#	Line 823 | Line 1556 | public class JSR166TestCase extends Test
1556
1557		public class ShortRunnable extends CheckedRunnable {
1558		protected void realRun() throws Throwable {
1559	<	Thread.sleep(SHORT_DELAY_MS);
1559	>	delay(SHORT_DELAY_MS);
1560		}
1561		}
1562
1563		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1564		protected void realRun() throws InterruptedException {
1565	<	Thread.sleep(SHORT_DELAY_MS);
1565	>	delay(SHORT_DELAY_MS);
1566		}
1567		}
1568
1569		public class SmallRunnable extends CheckedRunnable {
1570		protected void realRun() throws Throwable {
1571	<	Thread.sleep(SMALL_DELAY_MS);
1571	>	delay(SMALL_DELAY_MS);
1572		}
1573		}
1574
1575		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1576		protected void realRun() {
1577		try {
1578	<	Thread.sleep(SMALL_DELAY_MS);
1578	>	delay(SMALL_DELAY_MS);
1579		} catch (InterruptedException ok) {}
1580		}
1581		}
1582
1583		public class SmallCallable extends CheckedCallable {
1584		protected Object realCall() throws InterruptedException {
1585	<	Thread.sleep(SMALL_DELAY_MS);
1585	>	delay(SMALL_DELAY_MS);
1586		return Boolean.TRUE;
1587		}
1588		}
1589
1590		public class MediumRunnable extends CheckedRunnable {
1591		protected void realRun() throws Throwable {
1592	<	Thread.sleep(MEDIUM_DELAY_MS);
1592	>	delay(MEDIUM_DELAY_MS);
1593		}
1594		}
1595
1596		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1597		protected void realRun() throws InterruptedException {
1598	<	Thread.sleep(MEDIUM_DELAY_MS);
1598	>	delay(MEDIUM_DELAY_MS);
1599		}
1600		}
1601
#	Line 870 | Line 1603 | public class JSR166TestCase extends Test
1603		return new CheckedRunnable() {
1604		protected void realRun() {
1605		try {
1606	<	Thread.sleep(timeoutMillis);
1606	>	delay(timeoutMillis);
1607		} catch (InterruptedException ok) {}
1608		}};
1609		}
#	Line 878 | Line 1611 | public class JSR166TestCase extends Test
1611		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1612		protected void realRun() {
1613		try {
1614	<	Thread.sleep(MEDIUM_DELAY_MS);
1614	>	delay(MEDIUM_DELAY_MS);
1615		} catch (InterruptedException ok) {}
1616		}
1617		}
#	Line 886 | Line 1619 | public class JSR166TestCase extends Test
1619		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1620		protected void realRun() {
1621		try {
1622	<	Thread.sleep(LONG_DELAY_MS);
1622	>	delay(LONG_DELAY_MS);
1623		} catch (InterruptedException ok) {}
1624		}
1625		}
#	Line 910 | Line 1643 | public class JSR166TestCase extends Test
1643		public boolean isDone() { return done; }
1644		public void run() {
1645		try {
1646	<	Thread.sleep(timeoutMillis);
1646	>	delay(timeoutMillis);
1647		done = true;
1648		} catch (InterruptedException ok) {}
1649		}
#	Line 921 | Line 1654 | public class JSR166TestCase extends Test
1654		public volatile boolean done = false;
1655		public void run() {
1656		try {
1657	<	Thread.sleep(SHORT_DELAY_MS);
1657	>	delay(SHORT_DELAY_MS);
1658		done = true;
1659		} catch (InterruptedException ok) {}
1660		}
#	Line 931 | Line 1664 | public class JSR166TestCase extends Test
1664		public volatile boolean done = false;
1665		public void run() {
1666		try {
1667	<	Thread.sleep(SMALL_DELAY_MS);
1667	>	delay(SMALL_DELAY_MS);
1668		done = true;
1669		} catch (InterruptedException ok) {}
1670		}
#	Line 941 | Line 1674 | public class JSR166TestCase extends Test
1674		public volatile boolean done = false;
1675		public void run() {
1676		try {
1677	<	Thread.sleep(MEDIUM_DELAY_MS);
1677	>	delay(MEDIUM_DELAY_MS);
1678		done = true;
1679		} catch (InterruptedException ok) {}
1680		}
#	Line 951 | Line 1684 | public class JSR166TestCase extends Test
1684		public volatile boolean done = false;
1685		public void run() {
1686		try {
1687	<	Thread.sleep(LONG_DELAY_MS);
1687	>	delay(LONG_DELAY_MS);
1688		done = true;
1689		} catch (InterruptedException ok) {}
1690		}
#	Line 968 | Line 1701 | public class JSR166TestCase extends Test
1701		public volatile boolean done = false;
1702		public Object call() {
1703		try {
1704	<	Thread.sleep(SMALL_DELAY_MS);
1704	>	delay(SMALL_DELAY_MS);
1705		done = true;
1706		} catch (InterruptedException ok) {}
1707		return Boolean.TRUE;
#	Line 981 | Line 1714 | public class JSR166TestCase extends Test
1714		public abstract class CheckedRecursiveAction extends RecursiveAction {
1715		protected abstract void realCompute() throws Throwable;
1716
1717	<	public final void compute() {
1717	>	@Override protected final void compute() {
1718		try {
1719		realCompute();
1720	<	} catch (Throwable t) {
1721	<	threadUnexpectedException(t);
1720	>	} catch (Throwable fail) {
1721	>	threadUnexpectedException(fail);
1722		}
1723		}
1724		}
#	Line 996 | Line 1729 | public class JSR166TestCase extends Test
1729		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1730		protected abstract T realCompute() throws Throwable;
1731
1732	<	public final T compute() {
1732	>	@Override protected final T compute() {
1733		try {
1734		return realCompute();
1735	<	} catch (Throwable t) {
1736	<	threadUnexpectedException(t);
1735	>	} catch (Throwable fail) {
1736	>	threadUnexpectedException(fail);
1737		return null;
1738		}
1739		}
#	Line 1015 | Line 1748 | public class JSR166TestCase extends Test
1748		}
1749
1750		/**
1751	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1752	<	* of throwing checked exceptions.
1751	>	* A CyclicBarrier that uses timed await and fails with
1752	>	* AssertionFailedErrors instead of throwing checked exceptions.
1753		*/
1754		public class CheckedBarrier extends CyclicBarrier {
1755		public CheckedBarrier(int parties) { super(parties); }
1756
1757		public int await() {
1758		try {
1759	<	return super.await();
1760	<	} catch (Exception e) {
1759	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1760	>	} catch (TimeoutException timedOut) {
1761	>	throw new AssertionFailedError("timed out");
1762	>	} catch (Exception fail) {
1763		AssertionFailedError afe =
1764	<	new AssertionFailedError("Unexpected exception: " + e);
1765	<	afe.initCause(e);
1764	>	new AssertionFailedError("Unexpected exception: " + fail);
1765	>	afe.initCause(fail);
1766		throw afe;
1767		}
1768		}
1769		}
1770
1771	<	public void checkEmpty(BlockingQueue q) {
1771	>	void checkEmpty(BlockingQueue q) {
1772		try {
1773		assertTrue(q.isEmpty());
1774		assertEquals(0, q.size());
#	Line 1055 | Line 1790 | public class JSR166TestCase extends Test
1790		q.remove();
1791		shouldThrow();
1792		} catch (NoSuchElementException success) {}
1793	<	} catch (InterruptedException ie) {
1794	<	threadUnexpectedException(ie);
1793	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1794	>	}
1795	>
1796	>	void assertSerialEquals(Object x, Object y) {
1797	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1798	>	}
1799	>
1800	>	void assertNotSerialEquals(Object x, Object y) {
1801	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1802	>	}
1803	>
1804	>	byte[] serialBytes(Object o) {
1805	>	try {
1806	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1807	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1808	>	oos.writeObject(o);
1809	>	oos.flush();
1810	>	oos.close();
1811	>	return bos.toByteArray();
1812	>	} catch (Throwable fail) {
1813	>	threadUnexpectedException(fail);
1814	>	return new byte[0];
1815		}
1816		}
1817
1818	+	@SuppressWarnings("unchecked")
1819	+	<T> T serialClone(T o) {
1820	+	try {
1821	+	ObjectInputStream ois = new ObjectInputStream
1822	+	(new ByteArrayInputStream(serialBytes(o)));
1823	+	T clone = (T) ois.readObject();
1824	+	assertSame(o.getClass(), clone.getClass());
1825	+	return clone;
1826	+	} catch (Throwable fail) {
1827	+	threadUnexpectedException(fail);
1828	+	return null;
1829	+	}
1830	+	}
1831	+
1832	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1833	+	Runnable... throwingActions) {
1834	+	for (Runnable throwingAction : throwingActions) {
1835	+	boolean threw = false;
1836	+	try { throwingAction.run(); }
1837	+	catch (Throwable t) {
1838	+	threw = true;
1839	+	if (!expectedExceptionClass.isInstance(t)) {
1840	+	AssertionFailedError afe =
1841	+	new AssertionFailedError
1842	+	("Expected " + expectedExceptionClass.getName() +
1843	+	", got " + t.getClass().getName());
1844	+	afe.initCause(t);
1845	+	threadUnexpectedException(afe);
1846	+	}
1847	+	}
1848	+	if (!threw)
1849	+	shouldThrow(expectedExceptionClass.getName());
1850	+	}
1851	+	}
1852	+
1853	+	public void assertIteratorExhausted(Iterator<?> it) {
1854	+	try {
1855	+	it.next();
1856	+	shouldThrow();
1857	+	} catch (NoSuchElementException success) {}
1858	+	assertFalse(it.hasNext());
1859	+	}
1860	+
1861	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1862	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1863	+	}
1864	+
1865	+	public Runnable runnableThrowing(final RuntimeException ex) {
1866	+	return new Runnable() { public void run() { throw ex; }};
1867	+	}
1868	+
1869	+	/** A reusable thread pool to be shared by tests. */
1870	+	static final ExecutorService cachedThreadPool =
1871	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1872	+	1000L, MILLISECONDS,
1873	+	new SynchronousQueue<Runnable>());
1874	+
1875		}

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