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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.107 by jsr166, Sun Apr 21 06:19:58 2013 UTC vs.
Revision 1.179 by jsr166, Fri Oct 23 21:59:58 2015 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.MINUTES;
11	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
12	>
13		import java.io.ByteArrayInputStream;
14		import java.io.ByteArrayOutputStream;
15		import java.io.ObjectInputStream;
16		import java.io.ObjectOutputStream;
17		import java.lang.management.ManagementFactory;
18		import java.lang.management.ThreadInfo;
19	+	import java.lang.management.ThreadMXBean;
20	+	import java.lang.reflect.Constructor;
21		import java.lang.reflect.Method;
22	+	import java.lang.reflect.Modifier;
23	+	import java.nio.file.Files;
24	+	import java.nio.file.Paths;
25	+	import java.security.CodeSource;
26	+	import java.security.Permission;
27	+	import java.security.PermissionCollection;
28	+	import java.security.Permissions;
29	+	import java.security.Policy;
30	+	import java.security.ProtectionDomain;
31	+	import java.security.SecurityPermission;
32		import java.util.ArrayList;
33		import java.util.Arrays;
34		import java.util.Date;
35		import java.util.Enumeration;
36	+	import java.util.Iterator;
37		import java.util.List;
38		import java.util.NoSuchElementException;
39		import java.util.PropertyPermission;
40	<	import java.util.concurrent.*;
41	<	import java.util.concurrent.atomic.AtomicBoolean;
40	>	import java.util.concurrent.BlockingQueue;
41	>	import java.util.concurrent.Callable;
42	>	import java.util.concurrent.CountDownLatch;
43	>	import java.util.concurrent.CyclicBarrier;
44	>	import java.util.concurrent.ExecutionException;
45	>	import java.util.concurrent.Executors;
46	>	import java.util.concurrent.ExecutorService;
47	>	import java.util.concurrent.ForkJoinPool;
48	>	import java.util.concurrent.Future;
49	>	import java.util.concurrent.RecursiveAction;
50	>	import java.util.concurrent.RecursiveTask;
51	>	import java.util.concurrent.RejectedExecutionHandler;
52	>	import java.util.concurrent.Semaphore;
53	>	import java.util.concurrent.ThreadFactory;
54	>	import java.util.concurrent.ThreadPoolExecutor;
55	>	import java.util.concurrent.TimeoutException;
56		import java.util.concurrent.atomic.AtomicReference;
57	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
58	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
59	<	import java.security.CodeSource;
60	<	import java.security.Permission;
61	<	import java.security.PermissionCollection;
62	<	import java.security.Permissions;
63	<	import java.security.Policy;
64	<	import java.security.ProtectionDomain;
35	<	import java.security.SecurityPermission;
57	>	import java.util.regex.Matcher;
58	>	import java.util.regex.Pattern;
59	>
60	>	import junit.framework.AssertionFailedError;
61	>	import junit.framework.Test;
62	>	import junit.framework.TestCase;
63	>	import junit.framework.TestResult;
64	>	import junit.framework.TestSuite;
65
66		/**
67		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 44 | Line 73 | import java.security.SecurityPermission;
73		*
74		* <ol>
75		*
76	<	* <li> All assertions in code running in generated threads must use
76	>	* <li>All assertions in code running in generated threads must use
77		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
78		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
79		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
80		* particularly recommended) for other code to use these forms too.
81		* Only the most typically used JUnit assertion methods are defined
82	<	* this way, but enough to live with.</li>
82	>	* this way, but enough to live with.
83		*
84	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
84	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
85		* to invoke {@code super.setUp} and {@code super.tearDown} within
86		* them. These methods are used to clear and check for thread
87	<	* assertion failures.</li>
87	>	* assertion failures.
88		*
89		* <li>All delays and timeouts must use one of the constants {@code
90		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 66 | Line 95 | import java.security.SecurityPermission;
95		* is always discriminable as larger than SHORT and smaller than
96		* MEDIUM.  And so on. These constants are set to conservative values,
97		* but even so, if there is ever any doubt, they can all be increased
98	<	* in one spot to rerun tests on slower platforms.</li>
98	>	* in one spot to rerun tests on slower platforms.
99		*
100	<	* <li> All threads generated must be joined inside each test case
100	>	* <li>All threads generated must be joined inside each test case
101		* method (or {@code fail} to do so) before returning from the
102		* method. The {@code joinPool} method can be used to do this when
103	<	* using Executors.</li>
103	>	* using Executors.
104		*
105		* </ol>
106		*
107		* <p><b>Other notes</b>
108		* <ul>
109		*
110	<	* <li> Usually, there is one testcase method per JSR166 method
110	>	* <li>Usually, there is one testcase method per JSR166 method
111		* covering "normal" operation, and then as many exception-testing
112		* methods as there are exceptions the method can throw. Sometimes
113		* there are multiple tests per JSR166 method when the different
114		* "normal" behaviors differ significantly. And sometimes testcases
115		* cover multiple methods when they cannot be tested in
116	<	* isolation.</li>
116	>	* isolation.
117		*
118	<	* <li> The documentation style for testcases is to provide as javadoc
118	>	* <li>The documentation style for testcases is to provide as javadoc
119		* a simple sentence or two describing the property that the testcase
120		* method purports to test. The javadocs do not say anything about how
121	<	* the property is tested. To find out, read the code.</li>
121	>	* the property is tested. To find out, read the code.
122		*
123	<	* <li> These tests are "conformance tests", and do not attempt to
123	>	* <li>These tests are "conformance tests", and do not attempt to
124		* test throughput, latency, scalability or other performance factors
125		* (see the separate "jtreg" tests for a set intended to check these
126		* for the most central aspects of functionality.) So, most tests use
127		* the smallest sensible numbers of threads, collection sizes, etc
128	<	* needed to check basic conformance.</li>
128	>	* needed to check basic conformance.
129		*
130		* <li>The test classes currently do not declare inclusion in
131		* any particular package to simplify things for people integrating
132	<	* them in TCK test suites.</li>
132	>	* them in TCK test suites.
133		*
134	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
135	<	* runs all JSR166 unit tests.</li>
134	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
135	>	* runs all JSR166 unit tests.
136		*
137		* </ul>
138		*/
#	Line 115 | Line 144 | public class JSR166TestCase extends Test
144		Boolean.getBoolean("jsr166.expensiveTests");
145
146		/**
147	+	* If true, also run tests that are not part of the official tck
148	+	* because they test unspecified implementation details.
149	+	*/
150	+	protected static final boolean testImplementationDetails =
151	+	Boolean.getBoolean("jsr166.testImplementationDetails");
152	+
153	+	/**
154		* If true, report on stdout all "slow" tests, that is, ones that
155		* take more than profileThreshold milliseconds to execute.
156		*/
#	Line 134 | Line 170 | public class JSR166TestCase extends Test
170		private static final int runsPerTest =
171		Integer.getInteger("jsr166.runsPerTest", 1);
172
173	+	/**
174	+	* The number of repetitions of the test suite (for finding leaks?).
175	+	*/
176	+	private static final int suiteRuns =
177	+	Integer.getInteger("jsr166.suiteRuns", 1);
178	+
179	+	public JSR166TestCase() { super(); }
180	+	public JSR166TestCase(String name) { super(name); }
181	+
182	+	/**
183	+	* A filter for tests to run, matching strings of the form
184	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
185	+	* Usefully combined with jsr166.runsPerTest.
186	+	*/
187	+	private static final Pattern methodFilter = methodFilter();
188	+
189	+	private static Pattern methodFilter() {
190	+	String regex = System.getProperty("jsr166.methodFilter");
191	+	return (regex == null) ? null : Pattern.compile(regex);
192	+	}
193	+
194	+	// Instrumentation to debug very rare, but very annoying hung test runs.
195	+	static volatile TestCase currentTestCase;
196	+	// static volatile int currentRun = 0;
197	+	static {
198	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
199	+	// Avoid spurious reports with enormous runsPerTest.
200	+	// A single test case run should never take more than 1 second.
201	+	// But let's cap it at the high end too ...
202	+	final int timeoutMinutes =
203	+	Math.min(15, Math.max(runsPerTest / 60, 1));
204	+	for (TestCase lastTestCase = currentTestCase;;) {
205	+	try { MINUTES.sleep(timeoutMinutes); }
206	+	catch (InterruptedException unexpected) { break; }
207	+	if (lastTestCase == currentTestCase) {
208	+	System.err.printf(
209	+	"Looks like we're stuck running test: %s%n",
210	+	lastTestCase);
211	+	//                     System.err.printf(
212	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
213	+	//                         lastTestCase, currentRun, runsPerTest);
214	+	//                     System.err.println("availableProcessors=" +
215	+	//                         Runtime.getRuntime().availableProcessors());
216	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
217	+	dumpTestThreads();
218	+	// one stack dump is probably enough; more would be spam
219	+	break;
220	+	}
221	+	lastTestCase = currentTestCase;
222	+	}}};
223	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
224	+	thread.setDaemon(true);
225	+	thread.start();
226	+	}
227	+
228	+	//     public static String cpuModel() {
229	+	//         try {
230	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
231	+	//                 .matcher(new String(
232	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
233	+	//             matcher.find();
234	+	//             return matcher.group(1);
235	+	//         } catch (Exception ex) { return null; }
236	+	//     }
237	+
238	+	public void runBare() throws Throwable {
239	+	currentTestCase = this;
240	+	if (methodFilter == null
241	+	|| methodFilter.matcher(toString()).find())
242	+	super.runBare();
243	+	}
244	+
245		protected void runTest() throws Throwable {
246		for (int i = 0; i < runsPerTest; i++) {
247	+	// currentRun = i;
248		if (profileTests)
249		runTestProfiled();
250		else
#	Line 144 | Line 253 | public class JSR166TestCase extends Test
253		}
254
255		protected void runTestProfiled() throws Throwable {
256	<	long t0 = System.nanoTime();
257	<	try {
256	>	for (int i = 0; i < 2; i++) {
257	>	long startTime = System.nanoTime();
258		super.runTest();
259	<	} finally {
260	<	long elapsedMillis =
261	<	(System.nanoTime() - t0) / (1000L * 1000L);
262	<	if (elapsedMillis >= profileThreshold)
259	>	long elapsedMillis = millisElapsedSince(startTime);
260	>	if (elapsedMillis < profileThreshold)
261	>	break;
262	>	// Never report first run of any test; treat it as a
263	>	// warmup run, notably to trigger all needed classloading,
264	>	if (i > 0)
265		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
266		}
267		}
268
269		/**
270		* Runs all JSR166 unit tests using junit.textui.TestRunner.
160	–	* Optional command line arg provides the number of iterations to
161	–	* repeat running the tests.
271		*/
272		public static void main(String[] args) {
273	+	main(suite(), args);
274	+	}
275	+
276	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
277	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
278	+	long runTime;
279	+	public void startTest(Test test) {}
280	+	protected void printHeader(long runTime) {
281	+	this.runTime = runTime; // defer printing for later
282	+	}
283	+	protected void printFooter(TestResult result) {
284	+	if (result.wasSuccessful()) {
285	+	getWriter().println("OK (" + result.runCount() + " tests)"
286	+	+ "  Time: " + elapsedTimeAsString(runTime));
287	+	} else {
288	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
289	+	super.printFooter(result);
290	+	}
291	+	}
292	+	}
293	+
294	+	/**
295	+	* Returns a TestRunner that doesn't bother with unnecessary
296	+	* fluff, like printing a "." for each test case.
297	+	*/
298	+	static junit.textui.TestRunner newPithyTestRunner() {
299	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
300	+	runner.setPrinter(new PithyResultPrinter(System.out));
301	+	return runner;
302	+	}
303	+
304	+	/**
305	+	* Runs all unit tests in the given test suite.
306	+	* Actual behavior influenced by jsr166.* system properties.
307	+	*/
308	+	static void main(Test suite, String[] args) {
309		if (useSecurityManager) {
310		System.err.println("Setting a permissive security manager");
311		Policy.setPolicy(permissivePolicy());
312		System.setSecurityManager(new SecurityManager());
313		}
314	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
315	<
316	<	Test s = suite();
317	<	for (int i = 0; i < iters; ++i) {
173	<	junit.textui.TestRunner.run(s);
314	>	for (int i = 0; i < suiteRuns; i++) {
315	>	TestResult result = newPithyTestRunner().doRun(suite);
316	>	if (!result.wasSuccessful())
317	>	System.exit(1);
318		System.gc();
319		System.runFinalization();
320		}
177	–	System.exit(0);
321		}
322
323		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 205 | Line 348 | public class JSR166TestCase extends Test
348		}
349
350		public static final double JAVA_CLASS_VERSION;
351	+	public static final String JAVA_SPECIFICATION_VERSION;
352		static {
353		try {
354		JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
355		new java.security.PrivilegedAction<Double>() {
356		public Double run() {
357		return Double.valueOf(System.getProperty("java.class.version"));}});
358	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
359	+	new java.security.PrivilegedAction<String>() {
360	+	public String run() {
361	+	return System.getProperty("java.specification.version");}});
362		} catch (Throwable t) {
363		throw new Error(t);
364		}
#	Line 219 | Line 367 | public class JSR166TestCase extends Test
367		public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
368		public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
369		public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
370	+	public static boolean atLeastJava9() {
371	+	return JAVA_CLASS_VERSION >= 53.0
372	+	// As of 2015-09, java9 still uses 52.0 class file version
373	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
374	+	}
375	+	public static boolean atLeastJava10() {
376	+	return JAVA_CLASS_VERSION >= 54.0
377	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
378	+	}
379
380		/**
381		* Collects all JSR166 unit tests as one suite.
#	Line 294 | Line 451 | public class JSR166TestCase extends Test
451		// Java8+ test classes
452		if (atLeastJava8()) {
453		String[] java8TestClassNames = {
454	+	"Atomic8Test",
455		"CompletableFutureTest",
456		"ConcurrentHashMap8Test",
457		"CountedCompleterTest",
458		"DoubleAccumulatorTest",
459		"DoubleAdderTest",
460		"ForkJoinPool8Test",
461	+	"ForkJoinTask8Test",
462		"LongAccumulatorTest",
463		"LongAdderTest",
464	+	"SplittableRandomTest",
465		"StampedLockTest",
466	+	"SubmissionPublisherTest",
467	+	"ThreadLocalRandom8Test",
468		};
469		addNamedTestClasses(suite, java8TestClassNames);
470		}
471
472	+	// Java9+ test classes
473	+	if (atLeastJava9()) {
474	+	String[] java9TestClassNames = {
475	+	// Currently empty, but expecting varhandle tests
476	+	};
477	+	addNamedTestClasses(suite, java9TestClassNames);
478	+	}
479	+
480		return suite;
481		}
482
483	+	/** Returns list of junit-style test method names in given class. */
484	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
485	+	Method[] methods = testClass.getDeclaredMethods();
486	+	ArrayList<String> names = new ArrayList<String>(methods.length);
487	+	for (Method method : methods) {
488	+	if (method.getName().startsWith("test")
489	+	&& Modifier.isPublic(method.getModifiers())
490	+	// method.getParameterCount() requires jdk8+
491	+	&& method.getParameterTypes().length == 0) {
492	+	names.add(method.getName());
493	+	}
494	+	}
495	+	return names;
496	+	}
497	+
498	+	/**
499	+	* Returns junit-style testSuite for the given test class, but
500	+	* parameterized by passing extra data to each test.
501	+	*/
502	+	public static <ExtraData> Test parameterizedTestSuite
503	+	(Class<? extends JSR166TestCase> testClass,
504	+	Class<ExtraData> dataClass,
505	+	ExtraData data) {
506	+	try {
507	+	TestSuite suite = new TestSuite();
508	+	Constructor c =
509	+	testClass.getDeclaredConstructor(dataClass, String.class);
510	+	for (String methodName : testMethodNames(testClass))
511	+	suite.addTest((Test) c.newInstance(data, methodName));
512	+	return suite;
513	+	} catch (Exception e) {
514	+	throw new Error(e);
515	+	}
516	+	}
517	+
518	+	/**
519	+	* Returns junit-style testSuite for the jdk8 extension of the
520	+	* given test class, but parameterized by passing extra data to
521	+	* each test.  Uses reflection to allow compilation in jdk7.
522	+	*/
523	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
524	+	(Class<? extends JSR166TestCase> testClass,
525	+	Class<ExtraData> dataClass,
526	+	ExtraData data) {
527	+	if (atLeastJava8()) {
528	+	String name = testClass.getName();
529	+	String name8 = name.replaceAll("Test$", "8Test");
530	+	if (name.equals(name8)) throw new Error(name);
531	+	try {
532	+	return (Test)
533	+	Class.forName(name8)
534	+	.getMethod("testSuite", new Class[] { dataClass })
535	+	.invoke(null, data);
536	+	} catch (Exception e) {
537	+	throw new Error(e);
538	+	}
539	+	} else {
540	+	return new TestSuite();
541	+	}
542	+	}
543	+
544	+	// Delays for timing-dependent tests, in milliseconds.
545
546		public static long SHORT_DELAY_MS;
547		public static long SMALL_DELAY_MS;
548		public static long MEDIUM_DELAY_MS;
549		public static long LONG_DELAY_MS;
550
319	–
551		/**
552		* Returns the shortest timed delay. This could
553		* be reimplemented to use for example a Property.
#	Line 344 | Line 575 | public class JSR166TestCase extends Test
575		}
576
577		/**
578	<	* Returns a new Date instance representing a time delayMillis
579	<	* milliseconds in the future.
578	>	* Returns a new Date instance representing a time at least
579	>	* delayMillis milliseconds in the future.
580		*/
581		Date delayedDate(long delayMillis) {
582	<	return new Date(System.currentTimeMillis() + delayMillis);
582	>	// Add 1 because currentTimeMillis is known to round into the past.
583	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
584		}
585
586		/**
#	Line 364 | Line 596 | public class JSR166TestCase extends Test
596		* the same test have no effect.
597		*/
598		public void threadRecordFailure(Throwable t) {
599	+	System.err.println(t);
600	+	dumpTestThreads();
601		threadFailure.compareAndSet(null, t);
602		}
603
#	Line 371 | Line 605 | public class JSR166TestCase extends Test
605		setDelays();
606		}
607
608	+	void tearDownFail(String format, Object... args) {
609	+	String msg = toString() + ": " + String.format(format, args);
610	+	System.err.println(msg);
611	+	dumpTestThreads();
612	+	throw new AssertionFailedError(msg);
613	+	}
614	+
615		/**
616		* Extra checks that get done for all test cases.
617		*
#	Line 398 | Line 639 | public class JSR166TestCase extends Test
639		}
640
641		if (Thread.interrupted())
642	<	throw new AssertionFailedError("interrupt status set in main thread");
642	>	tearDownFail("interrupt status set in main thread");
643
644		checkForkJoinPoolThreadLeaks();
645		}
646
647		/**
648	<	* Find missing try { ... } finally { joinPool(e); }
648	>	* Finds missing PoolCleaners
649		*/
650		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
651	<	Thread[] survivors = new Thread[5];
651	>	Thread[] survivors = new Thread[7];
652		int count = Thread.enumerate(survivors);
653		for (int i = 0; i < count; i++) {
654		Thread thread = survivors[i];
#	Line 415 | Line 656 | public class JSR166TestCase extends Test
656		if (name.startsWith("ForkJoinPool-")) {
657		// give thread some time to terminate
658		thread.join(LONG_DELAY_MS);
659	<	if (!thread.isAlive()) continue;
660	<	thread.stop();
661	<	throw new AssertionFailedError
421	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
422	<	toString(), name));
659	>	if (thread.isAlive())
660	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
661	>	thread);
662		}
663		}
664	+
665	+	if (!ForkJoinPool.commonPool()
666	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
667	+	tearDownFail("ForkJoin common pool thread stuck");
668		}
669
670		/**
#	Line 434 | Line 677 | public class JSR166TestCase extends Test
677		fail(reason);
678		} catch (AssertionFailedError t) {
679		threadRecordFailure(t);
680	<	fail(reason);
680	>	throw t;
681		}
682		}
683
#	Line 502 | Line 745 | public class JSR166TestCase extends Test
745		public void threadAssertEquals(Object x, Object y) {
746		try {
747		assertEquals(x, y);
748	<	} catch (AssertionFailedError t) {
749	<	threadRecordFailure(t);
750	<	throw t;
751	<	} catch (Throwable t) {
752	<	threadUnexpectedException(t);
748	>	} catch (AssertionFailedError fail) {
749	>	threadRecordFailure(fail);
750	>	throw fail;
751	>	} catch (Throwable fail) {
752	>	threadUnexpectedException(fail);
753		}
754		}
755
#	Line 518 | Line 761 | public class JSR166TestCase extends Test
761		public void threadAssertSame(Object x, Object y) {
762		try {
763		assertSame(x, y);
764	<	} catch (AssertionFailedError t) {
765	<	threadRecordFailure(t);
766	<	throw t;
764	>	} catch (AssertionFailedError fail) {
765	>	threadRecordFailure(fail);
766	>	throw fail;
767		}
768		}
769
#	Line 561 | Line 804 | public class JSR166TestCase extends Test
804		/**
805		* Delays, via Thread.sleep, for the given millisecond delay, but
806		* if the sleep is shorter than specified, may re-sleep or yield
807	<	* until time elapses.
807	>	* until time elapses.  Ensures that the given time, as measured
808	>	* by System.nanoTime(), has elapsed.
809		*/
810		static void delay(long millis) throws InterruptedException {
811	<	long startTime = System.nanoTime();
812	<	long ns = millis * 1000 * 1000;
813	<	for (;;) {
811	>	long nanos = millis * (1000 * 1000);
812	>	final long wakeupTime = System.nanoTime() + nanos;
813	>	do {
814		if (millis > 0L)
815		Thread.sleep(millis);
816		else // too short to sleep
817		Thread.yield();
818	<	long d = ns - (System.nanoTime() - startTime);
819	<	if (d > 0L)
820	<	millis = d / (1000 * 1000);
821	<	else
822	<	break;
818	>	nanos = wakeupTime - System.nanoTime();
819	>	millis = nanos / (1000 * 1000);
820	>	} while (nanos >= 0L);
821	>	}
822	>
823	>	/**
824	>	* Allows use of try-with-resources with per-test thread pools.
825	>	*/
826	>	class PoolCleaner implements AutoCloseable {
827	>	private final ExecutorService pool;
828	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
829	>	public void close() { joinPool(pool); }
830	>	}
831	>
832	>	/**
833	>	* An extension of PoolCleaner that has an action to release the pool.
834	>	*/
835	>	class PoolCleanerWithReleaser extends PoolCleaner {
836	>	private final Runnable releaser;
837	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
838	>	super(pool);
839	>	this.releaser = releaser;
840	>	}
841	>	public void close() {
842	>	try {
843	>	releaser.run();
844	>	} finally {
845	>	super.close();
846	>	}
847		}
848		}
849
850	+	PoolCleaner cleaner(ExecutorService pool) {
851	+	return new PoolCleaner(pool);
852	+	}
853	+
854	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
855	+	return new PoolCleanerWithReleaser(pool, releaser);
856	+	}
857	+
858	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
859	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
860	+	}
861	+
862	+	Runnable releaser(final CountDownLatch latch) {
863	+	return new Runnable() { public void run() {
864	+	do { latch.countDown(); }
865	+	while (latch.getCount() > 0);
866	+	}};
867	+	}
868	+
869		/**
870		* Waits out termination of a thread pool or fails doing so.
871		*/
872	<	void joinPool(ExecutorService exec) {
872	>	void joinPool(ExecutorService pool) {
873		try {
874	<	exec.shutdown();
875	<	assertTrue("ExecutorService did not terminate in a timely manner",
876	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
874	>	pool.shutdown();
875	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
876	>	try {
877	>	threadFail("ExecutorService " + pool +
878	>	" did not terminate in a timely manner");
879	>	} finally {
880	>	// last resort, for the benefit of subsequent tests
881	>	pool.shutdownNow();
882	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
883	>	}
884	>	}
885		} catch (SecurityException ok) {
886		// Allowed in case test doesn't have privs
887	<	} catch (InterruptedException ie) {
888	<	fail("Unexpected InterruptedException");
887	>	} catch (InterruptedException fail) {
888	>	threadFail("Unexpected InterruptedException");
889	>	}
890	>	}
891	>
892	>	/** Like Runnable, but with the freedom to throw anything */
893	>	interface Action { public void run() throws Throwable; }
894	>
895	>	/**
896	>	* Runs all the given actions in parallel, failing if any fail.
897	>	* Useful for running multiple variants of tests that are
898	>	* necessarily individually slow because they must block.
899	>	*/
900	>	void testInParallel(Action ... actions) {
901	>	ExecutorService pool = Executors.newCachedThreadPool();
902	>	try (PoolCleaner cleaner = cleaner(pool)) {
903	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
904	>	for (final Action action : actions)
905	>	futures.add(pool.submit(new CheckedRunnable() {
906	>	public void realRun() throws Throwable { action.run();}}));
907	>	for (Future<?> future : futures)
908	>	try {
909	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
910	>	} catch (ExecutionException ex) {
911	>	threadUnexpectedException(ex.getCause());
912	>	} catch (Exception ex) {
913	>	threadUnexpectedException(ex);
914	>	}
915		}
916		}
917
918		/**
919	<	* A debugging tool to print all stack traces, as jstack does.
919	>	* A debugging tool to print stack traces of most threads, as jstack does.
920	>	* Uninteresting threads are filtered out.
921		*/
922	<	static void printAllStackTraces() {
923	<	for (ThreadInfo info :
924	<	ManagementFactory.getThreadMXBean()
925	<	.dumpAllThreads(true, true))
922	>	static void dumpTestThreads() {
923	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
924	>	System.err.println("------ stacktrace dump start ------");
925	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
926	>	String name = info.getThreadName();
927	>	if ("Signal Dispatcher".equals(name))
928	>	continue;
929	>	if ("Reference Handler".equals(name)
930	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
931	>	continue;
932	>	if ("Finalizer".equals(name)
933	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
934	>	continue;
935	>	if ("checkForWedgedTest".equals(name))
936	>	continue;
937		System.err.print(info);
938	+	}
939	+	System.err.println("------ stacktrace dump end ------");
940		}
941
942		/**
#	Line 620 | Line 955 | public class JSR166TestCase extends Test
955		// No need to optimize the failing case via Thread.join.
956		delay(millis);
957		assertTrue(thread.isAlive());
958	<	} catch (InterruptedException ie) {
959	<	fail("Unexpected InterruptedException");
958	>	} catch (InterruptedException fail) {
959	>	threadFail("Unexpected InterruptedException");
960		}
961		}
962
#	Line 642 | Line 977 | public class JSR166TestCase extends Test
977		delay(millis);
978		for (Thread thread : threads)
979		assertTrue(thread.isAlive());
980	<	} catch (InterruptedException ie) {
981	<	fail("Unexpected InterruptedException");
980	>	} catch (InterruptedException fail) {
981	>	threadFail("Unexpected InterruptedException");
982		}
983		}
984
#	Line 664 | Line 999 | public class JSR166TestCase extends Test
999		future.get(timeoutMillis, MILLISECONDS);
1000		shouldThrow();
1001		} catch (TimeoutException success) {
1002	<	} catch (Exception e) {
1003	<	threadUnexpectedException(e);
1002	>	} catch (Exception fail) {
1003	>	threadUnexpectedException(fail);
1004		} finally { future.cancel(true); }
1005		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1006		}
#	Line 709 | Line 1044 | public class JSR166TestCase extends Test
1044		public static final Integer m6  = new Integer(-6);
1045		public static final Integer m10 = new Integer(-10);
1046
712	–
1047		/**
1048		* Runs Runnable r with a security policy that permits precisely
1049		* the specified permissions.  If there is no current security
#	Line 822 | Line 1156 | public class JSR166TestCase extends Test
1156		void sleep(long millis) {
1157		try {
1158		delay(millis);
1159	<	} catch (InterruptedException ie) {
1159	>	} catch (InterruptedException fail) {
1160		AssertionFailedError afe =
1161		new AssertionFailedError("Unexpected InterruptedException");
1162	<	afe.initCause(ie);
1162	>	afe.initCause(fail);
1163		throw afe;
1164		}
1165		}
#	Line 863 | Line 1197 | public class JSR166TestCase extends Test
1197		/**
1198		* Returns the number of milliseconds since time given by
1199		* startNanoTime, which must have been previously returned from a
1200	<	* call to {@link System.nanoTime()}.
1200	>	* call to {@link System#nanoTime()}.
1201		*/
1202	<	long millisElapsedSince(long startNanoTime) {
1202	>	static long millisElapsedSince(long startNanoTime) {
1203		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1204		}
1205
1206	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1207	+	//         long startTime = System.nanoTime();
1208	+	//         try {
1209	+	//             r.run();
1210	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1211	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1212	+	//             throw new AssertionFailedError("did not return promptly");
1213	+	//     }
1214	+
1215	+	//     void assertTerminatesPromptly(Runnable r) {
1216	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1217	+	//     }
1218	+
1219	+	/**
1220	+	* Checks that timed f.get() returns the expected value, and does not
1221	+	* wait for the timeout to elapse before returning.
1222	+	*/
1223	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1224	+	long startTime = System.nanoTime();
1225	+	try {
1226	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1227	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1228	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1229	+	throw new AssertionFailedError("timed get did not return promptly");
1230	+	}
1231	+
1232	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1233	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1234	+	}
1235	+
1236		/**
1237		* Returns a new started daemon Thread running the given runnable.
1238		*/
#	Line 887 | Line 1251 | public class JSR166TestCase extends Test
1251		void awaitTermination(Thread t, long timeoutMillis) {
1252		try {
1253		t.join(timeoutMillis);
1254	<	} catch (InterruptedException ie) {
1255	<	threadUnexpectedException(ie);
1254	>	} catch (InterruptedException fail) {
1255	>	threadUnexpectedException(fail);
1256		} finally {
1257		if (t.getState() != Thread.State.TERMINATED) {
1258		t.interrupt();
1259	<	fail("Test timed out");
1259	>	threadFail("timed out waiting for thread to terminate");
1260		}
1261		}
1262		}
#	Line 914 | Line 1278 | public class JSR166TestCase extends Test
1278		public final void run() {
1279		try {
1280		realRun();
1281	<	} catch (Throwable t) {
1282	<	threadUnexpectedException(t);
1281	>	} catch (Throwable fail) {
1282	>	threadUnexpectedException(fail);
1283		}
1284		}
1285		}
#	Line 969 | Line 1333 | public class JSR166TestCase extends Test
1333		threadShouldThrow("InterruptedException");
1334		} catch (InterruptedException success) {
1335		threadAssertFalse(Thread.interrupted());
1336	<	} catch (Throwable t) {
1337	<	threadUnexpectedException(t);
1336	>	} catch (Throwable fail) {
1337	>	threadUnexpectedException(fail);
1338		}
1339		}
1340		}
#	Line 981 | Line 1345 | public class JSR166TestCase extends Test
1345		public final T call() {
1346		try {
1347		return realCall();
1348	<	} catch (Throwable t) {
1349	<	threadUnexpectedException(t);
1348	>	} catch (Throwable fail) {
1349	>	threadUnexpectedException(fail);
1350		return null;
1351		}
1352		}
#	Line 999 | Line 1363 | public class JSR166TestCase extends Test
1363		return result;
1364		} catch (InterruptedException success) {
1365		threadAssertFalse(Thread.interrupted());
1366	<	} catch (Throwable t) {
1367	<	threadUnexpectedException(t);
1366	>	} catch (Throwable fail) {
1367	>	threadUnexpectedException(fail);
1368		}
1369		return null;
1370		}
#	Line 1017 | Line 1381 | public class JSR166TestCase extends Test
1381		public static final String TEST_STRING = "a test string";
1382
1383		public static class StringTask implements Callable<String> {
1384	<	public String call() { return TEST_STRING; }
1384	>	final String value;
1385	>	public StringTask() { this(TEST_STRING); }
1386	>	public StringTask(String value) { this.value = value; }
1387	>	public String call() { return value; }
1388		}
1389
1390		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1030 | Line 1397 | public class JSR166TestCase extends Test
1397		}};
1398		}
1399
1400	<	public Runnable awaiter(final CountDownLatch latch) {
1400	>	public Runnable countDowner(final CountDownLatch latch) {
1401		return new CheckedRunnable() {
1402		public void realRun() throws InterruptedException {
1403	<	await(latch);
1403	>	latch.countDown();
1404		}};
1405		}
1406
1407	+	class LatchAwaiter extends CheckedRunnable {
1408	+	static final int NEW = 0;
1409	+	static final int RUNNING = 1;
1410	+	static final int DONE = 2;
1411	+	final CountDownLatch latch;
1412	+	int state = NEW;
1413	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1414	+	public void realRun() throws InterruptedException {
1415	+	state = 1;
1416	+	await(latch);
1417	+	state = 2;
1418	+	}
1419	+	}
1420	+
1421	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1422	+	return new LatchAwaiter(latch);
1423	+	}
1424	+
1425		public void await(CountDownLatch latch) {
1426		try {
1427	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1428	<	} catch (Throwable t) {
1429	<	threadUnexpectedException(t);
1427	>	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1428	>	fail("timed out waiting for CountDownLatch for "
1429	>	+ (LONG_DELAY_MS/1000) + " sec");
1430	>	} catch (Throwable fail) {
1431	>	threadUnexpectedException(fail);
1432		}
1433		}
1434
1435		public void await(Semaphore semaphore) {
1436		try {
1437	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1438	<	} catch (Throwable t) {
1439	<	threadUnexpectedException(t);
1437	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1438	>	fail("timed out waiting for Semaphore for "
1439	>	+ (LONG_DELAY_MS/1000) + " sec");
1440	>	} catch (Throwable fail) {
1441	>	threadUnexpectedException(fail);
1442		}
1443		}
1444
#	Line 1240 | Line 1629 | public class JSR166TestCase extends Test
1629		public abstract class CheckedRecursiveAction extends RecursiveAction {
1630		protected abstract void realCompute() throws Throwable;
1631
1632	<	public final void compute() {
1632	>	@Override protected final void compute() {
1633		try {
1634		realCompute();
1635	<	} catch (Throwable t) {
1636	<	threadUnexpectedException(t);
1635	>	} catch (Throwable fail) {
1636	>	threadUnexpectedException(fail);
1637		}
1638		}
1639		}
#	Line 1255 | Line 1644 | public class JSR166TestCase extends Test
1644		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1645		protected abstract T realCompute() throws Throwable;
1646
1647	<	public final T compute() {
1647	>	@Override protected final T compute() {
1648		try {
1649		return realCompute();
1650	<	} catch (Throwable t) {
1651	<	threadUnexpectedException(t);
1650	>	} catch (Throwable fail) {
1651	>	threadUnexpectedException(fail);
1652		return null;
1653		}
1654		}
#	Line 1283 | Line 1672 | public class JSR166TestCase extends Test
1672		public int await() {
1673		try {
1674		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1675	<	} catch (TimeoutException e) {
1675	>	} catch (TimeoutException timedOut) {
1676		throw new AssertionFailedError("timed out");
1677	<	} catch (Exception e) {
1677	>	} catch (Exception fail) {
1678		AssertionFailedError afe =
1679	<	new AssertionFailedError("Unexpected exception: " + e);
1680	<	afe.initCause(e);
1679	>	new AssertionFailedError("Unexpected exception: " + fail);
1680	>	afe.initCause(fail);
1681		throw afe;
1682		}
1683		}
#	Line 1316 | Line 1705 | public class JSR166TestCase extends Test
1705		q.remove();
1706		shouldThrow();
1707		} catch (NoSuchElementException success) {}
1708	<	} catch (InterruptedException ie) {
1320	<	threadUnexpectedException(ie);
1321	<	}
1708	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1709		}
1710
1711		void assertSerialEquals(Object x, Object y) {
#	Line 1337 | Line 1724 | public class JSR166TestCase extends Test
1724		oos.flush();
1725		oos.close();
1726		return bos.toByteArray();
1727	<	} catch (Throwable t) {
1728	<	threadUnexpectedException(t);
1727	>	} catch (Throwable fail) {
1728	>	threadUnexpectedException(fail);
1729		return new byte[0];
1730		}
1731		}
#	Line 1351 | Line 1738 | public class JSR166TestCase extends Test
1738		T clone = (T) ois.readObject();
1739		assertSame(o.getClass(), clone.getClass());
1740		return clone;
1741	<	} catch (Throwable t) {
1742	<	threadUnexpectedException(t);
1741	>	} catch (Throwable fail) {
1742	>	threadUnexpectedException(fail);
1743		return null;
1744		}
1745		}
#	Line 1377 | Line 1764 | public class JSR166TestCase extends Test
1764		shouldThrow(expectedExceptionClass.getName());
1765		}
1766		}
1767	+
1768	+	public void assertIteratorExhausted(Iterator<?> it) {
1769	+	try {
1770	+	it.next();
1771	+	shouldThrow();
1772	+	} catch (NoSuchElementException success) {}
1773	+	assertFalse(it.hasNext());
1774	+	}
1775		}

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