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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.125 by jsr166, Thu Jan 15 18:58:07 2015 UTC vs.
Revision 1.183 by jsr166, Sat Jan 23 20:15:28 2016 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	+	/*
10	+	* @test
11	+	* @summary JSR-166 tck tests
12	+	* @build *
13	+	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
14	+	*/
15	+
16		import static java.util.concurrent.TimeUnit.MILLISECONDS;
17	+	import static java.util.concurrent.TimeUnit.MINUTES;
18		import static java.util.concurrent.TimeUnit.NANOSECONDS;
19
20		import java.io.ByteArrayInputStream;
#	Line 15 | Line 23 | import java.io.ObjectInputStream;
23		import java.io.ObjectOutputStream;
24		import java.lang.management.ManagementFactory;
25		import java.lang.management.ThreadInfo;
26	+	import java.lang.management.ThreadMXBean;
27	+	import java.lang.reflect.Constructor;
28		import java.lang.reflect.Method;
29	+	import java.lang.reflect.Modifier;
30	+	import java.nio.file.Files;
31	+	import java.nio.file.Paths;
32		import java.security.CodeSource;
33		import java.security.Permission;
34		import java.security.PermissionCollection;
#	Line 27 | Line 40 | import java.util.ArrayList;
40		import java.util.Arrays;
41		import java.util.Date;
42		import java.util.Enumeration;
43	+	import java.util.Iterator;
44		import java.util.List;
45		import java.util.NoSuchElementException;
46		import java.util.PropertyPermission;
#	Line 34 | Line 48 | import java.util.concurrent.BlockingQueu
48		import java.util.concurrent.Callable;
49		import java.util.concurrent.CountDownLatch;
50		import java.util.concurrent.CyclicBarrier;
51	+	import java.util.concurrent.ExecutionException;
52	+	import java.util.concurrent.Executors;
53		import java.util.concurrent.ExecutorService;
54	+	import java.util.concurrent.ForkJoinPool;
55		import java.util.concurrent.Future;
56		import java.util.concurrent.RecursiveAction;
57		import java.util.concurrent.RecursiveTask;
#	Line 44 | Line 61 | import java.util.concurrent.ThreadFactor
61		import java.util.concurrent.ThreadPoolExecutor;
62		import java.util.concurrent.TimeoutException;
63		import java.util.concurrent.atomic.AtomicReference;
64	+	import java.util.regex.Matcher;
65		import java.util.regex.Pattern;
66
67		import junit.framework.AssertionFailedError;
68		import junit.framework.Test;
69		import junit.framework.TestCase;
70	+	import junit.framework.TestResult;
71		import junit.framework.TestSuite;
72
73		/**
#	Line 61 | Line 80 | import junit.framework.TestSuite;
80		*
81		* <ol>
82		*
83	<	* <li> All assertions in code running in generated threads must use
83	>	* <li>All assertions in code running in generated threads must use
84		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
85		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
86		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
87		* particularly recommended) for other code to use these forms too.
88		* Only the most typically used JUnit assertion methods are defined
89	<	* this way, but enough to live with.</li>
89	>	* this way, but enough to live with.
90		*
91	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
91	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
92		* to invoke {@code super.setUp} and {@code super.tearDown} within
93		* them. These methods are used to clear and check for thread
94	<	* assertion failures.</li>
94	>	* assertion failures.
95		*
96		* <li>All delays and timeouts must use one of the constants {@code
97		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 83 | Line 102 | import junit.framework.TestSuite;
102		* is always discriminable as larger than SHORT and smaller than
103		* MEDIUM.  And so on. These constants are set to conservative values,
104		* but even so, if there is ever any doubt, they can all be increased
105	<	* in one spot to rerun tests on slower platforms.</li>
105	>	* in one spot to rerun tests on slower platforms.
106		*
107	<	* <li> All threads generated must be joined inside each test case
107	>	* <li>All threads generated must be joined inside each test case
108		* method (or {@code fail} to do so) before returning from the
109		* method. The {@code joinPool} method can be used to do this when
110	<	* using Executors.</li>
110	>	* using Executors.
111		*
112		* </ol>
113		*
114		* <p><b>Other notes</b>
115		* <ul>
116		*
117	<	* <li> Usually, there is one testcase method per JSR166 method
117	>	* <li>Usually, there is one testcase method per JSR166 method
118		* covering "normal" operation, and then as many exception-testing
119		* methods as there are exceptions the method can throw. Sometimes
120		* there are multiple tests per JSR166 method when the different
121		* "normal" behaviors differ significantly. And sometimes testcases
122	<	* cover multiple methods when they cannot be tested in
104	<	* isolation.</li>
122	>	* cover multiple methods when they cannot be tested in isolation.
123		*
124	<	* <li> The documentation style for testcases is to provide as javadoc
124	>	* <li>The documentation style for testcases is to provide as javadoc
125		* a simple sentence or two describing the property that the testcase
126		* method purports to test. The javadocs do not say anything about how
127	<	* the property is tested. To find out, read the code.</li>
127	>	* the property is tested. To find out, read the code.
128		*
129	<	* <li> These tests are "conformance tests", and do not attempt to
129	>	* <li>These tests are "conformance tests", and do not attempt to
130		* test throughput, latency, scalability or other performance factors
131		* (see the separate "jtreg" tests for a set intended to check these
132		* for the most central aspects of functionality.) So, most tests use
133		* the smallest sensible numbers of threads, collection sizes, etc
134	<	* needed to check basic conformance.</li>
134	>	* needed to check basic conformance.
135		*
136		* <li>The test classes currently do not declare inclusion in
137		* any particular package to simplify things for people integrating
138	<	* them in TCK test suites.</li>
138	>	* them in TCK test suites.
139		*
140	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
141	<	* runs all JSR166 unit tests.</li>
140	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
141	>	* runs all JSR166 unit tests.
142		*
143		* </ul>
144		*/
#	Line 159 | Line 177 | public class JSR166TestCase extends Test
177		Integer.getInteger("jsr166.runsPerTest", 1);
178
179		/**
180	+	* The number of repetitions of the test suite (for finding leaks?).
181	+	*/
182	+	private static final int suiteRuns =
183	+	Integer.getInteger("jsr166.suiteRuns", 1);
184	+
185	+	/**
186	+	* The scaling factor to apply to standard delays used in tests.
187	+	*/
188	+	private static final int delayFactor =
189	+	Integer.getInteger("jsr166.delay.factor", 1);
190	+
191	+	public JSR166TestCase() { super(); }
192	+	public JSR166TestCase(String name) { super(name); }
193	+
194	+	/**
195		* A filter for tests to run, matching strings of the form
196		* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
197		* Usefully combined with jsr166.runsPerTest.
#	Line 170 | Line 203 | public class JSR166TestCase extends Test
203		return (regex == null) ? null : Pattern.compile(regex);
204		}
205
206	<	protected void runTest() throws Throwable {
206	>	// Instrumentation to debug very rare, but very annoying hung test runs.
207	>	static volatile TestCase currentTestCase;
208	>	// static volatile int currentRun = 0;
209	>	static {
210	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
211	>	// Avoid spurious reports with enormous runsPerTest.
212	>	// A single test case run should never take more than 1 second.
213	>	// But let's cap it at the high end too ...
214	>	final int timeoutMinutes =
215	>	Math.min(15, Math.max(runsPerTest / 60, 1));
216	>	for (TestCase lastTestCase = currentTestCase;;) {
217	>	try { MINUTES.sleep(timeoutMinutes); }
218	>	catch (InterruptedException unexpected) { break; }
219	>	if (lastTestCase == currentTestCase) {
220	>	System.err.printf(
221	>	"Looks like we're stuck running test: %s%n",
222	>	lastTestCase);
223	>	//                     System.err.printf(
224	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
225	>	//                         lastTestCase, currentRun, runsPerTest);
226	>	//                     System.err.println("availableProcessors=" +
227	>	//                         Runtime.getRuntime().availableProcessors());
228	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
229	>	dumpTestThreads();
230	>	// one stack dump is probably enough; more would be spam
231	>	break;
232	>	}
233	>	lastTestCase = currentTestCase;
234	>	}}};
235	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
236	>	thread.setDaemon(true);
237	>	thread.start();
238	>	}
239	>
240	>	//     public static String cpuModel() {
241	>	//         try {
242	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
243	>	//                 .matcher(new String(
244	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
245	>	//             matcher.find();
246	>	//             return matcher.group(1);
247	>	//         } catch (Exception ex) { return null; }
248	>	//     }
249	>
250	>	public void runBare() throws Throwable {
251	>	currentTestCase = this;
252		if (methodFilter == null
253	<	|| methodFilter.matcher(toString()).find()) {
254	<	for (int i = 0; i < runsPerTest; i++) {
255	<	if (profileTests)
256	<	runTestProfiled();
257	<	else
258	<	super.runTest();
259	<	}
253	>	|| methodFilter.matcher(toString()).find())
254	>	super.runBare();
255	>	}
256	>
257	>	protected void runTest() throws Throwable {
258	>	for (int i = 0; i < runsPerTest; i++) {
259	>	// currentRun = i;
260	>	if (profileTests)
261	>	runTestProfiled();
262	>	else
263	>	super.runTest();
264		}
265		}
266
267		protected void runTestProfiled() throws Throwable {
268	<	// Warmup run, notably to trigger all needed classloading.
269	<	super.runTest();
188	<	long t0 = System.nanoTime();
189	<	try {
268	>	for (int i = 0; i < 2; i++) {
269	>	long startTime = System.nanoTime();
270		super.runTest();
271	<	} finally {
272	<	long elapsedMillis = millisElapsedSince(t0);
273	<	if (elapsedMillis >= profileThreshold)
271	>	long elapsedMillis = millisElapsedSince(startTime);
272	>	if (elapsedMillis < profileThreshold)
273	>	break;
274	>	// Never report first run of any test; treat it as a
275	>	// warmup run, notably to trigger all needed classloading,
276	>	if (i > 0)
277		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
278		}
279		}
280
281		/**
282		* Runs all JSR166 unit tests using junit.textui.TestRunner.
200	–	* Optional command line arg provides the number of iterations to
201	–	* repeat running the tests.
283		*/
284		public static void main(String[] args) {
285	+	main(suite(), args);
286	+	}
287	+
288	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
289	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
290	+	long runTime;
291	+	public void startTest(Test test) {}
292	+	protected void printHeader(long runTime) {
293	+	this.runTime = runTime; // defer printing for later
294	+	}
295	+	protected void printFooter(TestResult result) {
296	+	if (result.wasSuccessful()) {
297	+	getWriter().println("OK (" + result.runCount() + " tests)"
298	+	+ "  Time: " + elapsedTimeAsString(runTime));
299	+	} else {
300	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
301	+	super.printFooter(result);
302	+	}
303	+	}
304	+	}
305	+
306	+	/**
307	+	* Returns a TestRunner that doesn't bother with unnecessary
308	+	* fluff, like printing a "." for each test case.
309	+	*/
310	+	static junit.textui.TestRunner newPithyTestRunner() {
311	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
312	+	runner.setPrinter(new PithyResultPrinter(System.out));
313	+	return runner;
314	+	}
315	+
316	+	/**
317	+	* Runs all unit tests in the given test suite.
318	+	* Actual behavior influenced by jsr166.* system properties.
319	+	*/
320	+	static void main(Test suite, String[] args) {
321		if (useSecurityManager) {
322		System.err.println("Setting a permissive security manager");
323		Policy.setPolicy(permissivePolicy());
324		System.setSecurityManager(new SecurityManager());
325		}
326	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
327	<
328	<	Test s = suite();
329	<	for (int i = 0; i < iters; ++i) {
213	<	junit.textui.TestRunner.run(s);
326	>	for (int i = 0; i < suiteRuns; i++) {
327	>	TestResult result = newPithyTestRunner().doRun(suite);
328	>	if (!result.wasSuccessful())
329	>	System.exit(1);
330		System.gc();
331		System.runFinalization();
332		}
217	–	System.exit(0);
333		}
334
335		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 265 | Line 380 | public class JSR166TestCase extends Test
380		public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
381		public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
382		public static boolean atLeastJava9() {
383	<	// As of 2014-05, java9 still uses 52.0 class file version
384	<	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
383	>	return JAVA_CLASS_VERSION >= 53.0
384	>	// As of 2015-09, java9 still uses 52.0 class file version
385	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
386	>	}
387	>	public static boolean atLeastJava10() {
388	>	return JAVA_CLASS_VERSION >= 54.0
389	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
390		}
391
392		/**
#	Line 355 | Line 475 | public class JSR166TestCase extends Test
475		"LongAdderTest",
476		"SplittableRandomTest",
477		"StampedLockTest",
478	+	"SubmissionPublisherTest",
479		"ThreadLocalRandom8Test",
480		};
481		addNamedTestClasses(suite, java8TestClassNames);
#	Line 363 | Line 484 | public class JSR166TestCase extends Test
484		// Java9+ test classes
485		if (atLeastJava9()) {
486		String[] java9TestClassNames = {
487	<	"ThreadPoolExecutor9Test",
487	>	// Currently empty, but expecting varhandle tests
488		};
489		addNamedTestClasses(suite, java9TestClassNames);
490		}
#	Line 371 | Line 492 | public class JSR166TestCase extends Test
492		return suite;
493		}
494
495	+	/** Returns list of junit-style test method names in given class. */
496	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
497	+	Method[] methods = testClass.getDeclaredMethods();
498	+	ArrayList<String> names = new ArrayList<String>(methods.length);
499	+	for (Method method : methods) {
500	+	if (method.getName().startsWith("test")
501	+	&& Modifier.isPublic(method.getModifiers())
502	+	// method.getParameterCount() requires jdk8+
503	+	&& method.getParameterTypes().length == 0) {
504	+	names.add(method.getName());
505	+	}
506	+	}
507	+	return names;
508	+	}
509	+
510	+	/**
511	+	* Returns junit-style testSuite for the given test class, but
512	+	* parameterized by passing extra data to each test.
513	+	*/
514	+	public static <ExtraData> Test parameterizedTestSuite
515	+	(Class<? extends JSR166TestCase> testClass,
516	+	Class<ExtraData> dataClass,
517	+	ExtraData data) {
518	+	try {
519	+	TestSuite suite = new TestSuite();
520	+	Constructor c =
521	+	testClass.getDeclaredConstructor(dataClass, String.class);
522	+	for (String methodName : testMethodNames(testClass))
523	+	suite.addTest((Test) c.newInstance(data, methodName));
524	+	return suite;
525	+	} catch (Exception e) {
526	+	throw new Error(e);
527	+	}
528	+	}
529	+
530	+	/**
531	+	* Returns junit-style testSuite for the jdk8 extension of the
532	+	* given test class, but parameterized by passing extra data to
533	+	* each test.  Uses reflection to allow compilation in jdk7.
534	+	*/
535	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
536	+	(Class<? extends JSR166TestCase> testClass,
537	+	Class<ExtraData> dataClass,
538	+	ExtraData data) {
539	+	if (atLeastJava8()) {
540	+	String name = testClass.getName();
541	+	String name8 = name.replaceAll("Test$", "8Test");
542	+	if (name.equals(name8)) throw new Error(name);
543	+	try {
544	+	return (Test)
545	+	Class.forName(name8)
546	+	.getMethod("testSuite", new Class[] { dataClass })
547	+	.invoke(null, data);
548	+	} catch (Exception e) {
549	+	throw new Error(e);
550	+	}
551	+	} else {
552	+	return new TestSuite();
553	+	}
554	+	}
555	+
556		// Delays for timing-dependent tests, in milliseconds.
557
558		public static long SHORT_DELAY_MS;
#	Line 379 | Line 561 | public class JSR166TestCase extends Test
561		public static long LONG_DELAY_MS;
562
563		/**
564	<	* Returns the shortest timed delay. This could
565	<	* be reimplemented to use for example a Property.
564	>	* Returns the shortest timed delay. This can be scaled up for
565	>	* slow machines using the jsr166.delay.factor system property.
566		*/
567		protected long getShortDelay() {
568	<	return 50;
568	>	return 50 * delayFactor;
569		}
570
571		/**
#	Line 405 | Line 587 | public class JSR166TestCase extends Test
587		}
588
589		/**
590	<	* Returns a new Date instance representing a time delayMillis
591	<	* milliseconds in the future.
590	>	* Returns a new Date instance representing a time at least
591	>	* delayMillis milliseconds in the future.
592		*/
593		Date delayedDate(long delayMillis) {
594	<	return new Date(System.currentTimeMillis() + delayMillis);
594	>	// Add 1 because currentTimeMillis is known to round into the past.
595	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
596		}
597
598		/**
#	Line 425 | Line 608 | public class JSR166TestCase extends Test
608		* the same test have no effect.
609		*/
610		public void threadRecordFailure(Throwable t) {
611	+	System.err.println(t);
612	+	dumpTestThreads();
613		threadFailure.compareAndSet(null, t);
614		}
615
#	Line 432 | Line 617 | public class JSR166TestCase extends Test
617		setDelays();
618		}
619
620	+	void tearDownFail(String format, Object... args) {
621	+	String msg = toString() + ": " + String.format(format, args);
622	+	System.err.println(msg);
623	+	dumpTestThreads();
624	+	throw new AssertionFailedError(msg);
625	+	}
626	+
627		/**
628		* Extra checks that get done for all test cases.
629		*
#	Line 459 | Line 651 | public class JSR166TestCase extends Test
651		}
652
653		if (Thread.interrupted())
654	<	throw new AssertionFailedError("interrupt status set in main thread");
654	>	tearDownFail("interrupt status set in main thread");
655
656		checkForkJoinPoolThreadLeaks();
657		}
658
659		/**
660	<	* Finds missing try { ... } finally { joinPool(e); }
660	>	* Finds missing PoolCleaners
661		*/
662		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
663	<	Thread[] survivors = new Thread[5];
663	>	Thread[] survivors = new Thread[7];
664		int count = Thread.enumerate(survivors);
665		for (int i = 0; i < count; i++) {
666		Thread thread = survivors[i];
#	Line 476 | Line 668 | public class JSR166TestCase extends Test
668		if (name.startsWith("ForkJoinPool-")) {
669		// give thread some time to terminate
670		thread.join(LONG_DELAY_MS);
671	<	if (!thread.isAlive()) continue;
672	<	thread.stop();
673	<	throw new AssertionFailedError
482	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
483	<	toString(), name));
671	>	if (thread.isAlive())
672	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
673	>	thread);
674		}
675		}
676	+
677	+	if (!ForkJoinPool.commonPool()
678	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
679	+	tearDownFail("ForkJoin common pool thread stuck");
680		}
681
682		/**
#	Line 495 | Line 689 | public class JSR166TestCase extends Test
689		fail(reason);
690		} catch (AssertionFailedError t) {
691		threadRecordFailure(t);
692	<	fail(reason);
692	>	throw t;
693		}
694		}
695
#	Line 563 | Line 757 | public class JSR166TestCase extends Test
757		public void threadAssertEquals(Object x, Object y) {
758		try {
759		assertEquals(x, y);
760	<	} catch (AssertionFailedError t) {
761	<	threadRecordFailure(t);
762	<	throw t;
763	<	} catch (Throwable t) {
764	<	threadUnexpectedException(t);
760	>	} catch (AssertionFailedError fail) {
761	>	threadRecordFailure(fail);
762	>	throw fail;
763	>	} catch (Throwable fail) {
764	>	threadUnexpectedException(fail);
765		}
766		}
767
#	Line 579 | Line 773 | public class JSR166TestCase extends Test
773		public void threadAssertSame(Object x, Object y) {
774		try {
775		assertSame(x, y);
776	<	} catch (AssertionFailedError t) {
777	<	threadRecordFailure(t);
778	<	throw t;
776	>	} catch (AssertionFailedError fail) {
777	>	threadRecordFailure(fail);
778	>	throw fail;
779		}
780		}
781
#	Line 622 | Line 816 | public class JSR166TestCase extends Test
816		/**
817		* Delays, via Thread.sleep, for the given millisecond delay, but
818		* if the sleep is shorter than specified, may re-sleep or yield
819	<	* until time elapses.
819	>	* until time elapses.  Ensures that the given time, as measured
820	>	* by System.nanoTime(), has elapsed.
821		*/
822		static void delay(long millis) throws InterruptedException {
823	<	long startTime = System.nanoTime();
824	<	long ns = millis * 1000 * 1000;
825	<	for (;;) {
823	>	long nanos = millis * (1000 * 1000);
824	>	final long wakeupTime = System.nanoTime() + nanos;
825	>	do {
826		if (millis > 0L)
827		Thread.sleep(millis);
828		else // too short to sleep
829		Thread.yield();
830	<	long d = ns - (System.nanoTime() - startTime);
831	<	if (d > 0L)
832	<	millis = d / (1000 * 1000);
833	<	else
834	<	break;
830	>	nanos = wakeupTime - System.nanoTime();
831	>	millis = nanos / (1000 * 1000);
832	>	} while (nanos >= 0L);
833	>	}
834	>
835	>	/**
836	>	* Allows use of try-with-resources with per-test thread pools.
837	>	*/
838	>	class PoolCleaner implements AutoCloseable {
839	>	private final ExecutorService pool;
840	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
841	>	public void close() { joinPool(pool); }
842	>	}
843	>
844	>	/**
845	>	* An extension of PoolCleaner that has an action to release the pool.
846	>	*/
847	>	class PoolCleanerWithReleaser extends PoolCleaner {
848	>	private final Runnable releaser;
849	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
850	>	super(pool);
851	>	this.releaser = releaser;
852	>	}
853	>	public void close() {
854	>	try {
855	>	releaser.run();
856	>	} finally {
857	>	super.close();
858	>	}
859		}
860		}
861
862	+	PoolCleaner cleaner(ExecutorService pool) {
863	+	return new PoolCleaner(pool);
864	+	}
865	+
866	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
867	+	return new PoolCleanerWithReleaser(pool, releaser);
868	+	}
869	+
870	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
871	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
872	+	}
873	+
874	+	Runnable releaser(final CountDownLatch latch) {
875	+	return new Runnable() { public void run() {
876	+	do { latch.countDown(); }
877	+	while (latch.getCount() > 0);
878	+	}};
879	+	}
880	+
881		/**
882		* Waits out termination of a thread pool or fails doing so.
883		*/
884	<	void joinPool(ExecutorService exec) {
884	>	void joinPool(ExecutorService pool) {
885		try {
886	<	exec.shutdown();
887	<	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
888	<	fail("ExecutorService " + exec +
889	<	" did not terminate in a timely manner");
886	>	pool.shutdown();
887	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
888	>	try {
889	>	threadFail("ExecutorService " + pool +
890	>	" did not terminate in a timely manner");
891	>	} finally {
892	>	// last resort, for the benefit of subsequent tests
893	>	pool.shutdownNow();
894	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
895	>	}
896	>	}
897		} catch (SecurityException ok) {
898		// Allowed in case test doesn't have privs
899	<	} catch (InterruptedException ie) {
900	<	fail("Unexpected InterruptedException");
899	>	} catch (InterruptedException fail) {
900	>	threadFail("Unexpected InterruptedException");
901	>	}
902	>	}
903	>
904	>	/** Like Runnable, but with the freedom to throw anything */
905	>	interface Action { public void run() throws Throwable; }
906	>
907	>	/**
908	>	* Runs all the given actions in parallel, failing if any fail.
909	>	* Useful for running multiple variants of tests that are
910	>	* necessarily individually slow because they must block.
911	>	*/
912	>	void testInParallel(Action ... actions) {
913	>	ExecutorService pool = Executors.newCachedThreadPool();
914	>	try (PoolCleaner cleaner = cleaner(pool)) {
915	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
916	>	for (final Action action : actions)
917	>	futures.add(pool.submit(new CheckedRunnable() {
918	>	public void realRun() throws Throwable { action.run();}}));
919	>	for (Future<?> future : futures)
920	>	try {
921	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
922	>	} catch (ExecutionException ex) {
923	>	threadUnexpectedException(ex.getCause());
924	>	} catch (Exception ex) {
925	>	threadUnexpectedException(ex);
926	>	}
927		}
928		}
929
930		/**
931	<	* A debugging tool to print all stack traces, as jstack does.
931	>	* A debugging tool to print stack traces of most threads, as jstack does.
932	>	* Uninteresting threads are filtered out.
933		*/
934	<	static void printAllStackTraces() {
935	<	for (ThreadInfo info :
936	<	ManagementFactory.getThreadMXBean()
937	<	.dumpAllThreads(true, true))
934	>	static void dumpTestThreads() {
935	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
936	>	System.err.println("------ stacktrace dump start ------");
937	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
938	>	String name = info.getThreadName();
939	>	if ("Signal Dispatcher".equals(name))
940	>	continue;
941	>	if ("Reference Handler".equals(name)
942	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
943	>	continue;
944	>	if ("Finalizer".equals(name)
945	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
946	>	continue;
947	>	if ("checkForWedgedTest".equals(name))
948	>	continue;
949		System.err.print(info);
950	+	}
951	+	System.err.println("------ stacktrace dump end ------");
952		}
953
954		/**
#	Line 682 | Line 967 | public class JSR166TestCase extends Test
967		// No need to optimize the failing case via Thread.join.
968		delay(millis);
969		assertTrue(thread.isAlive());
970	<	} catch (InterruptedException ie) {
971	<	fail("Unexpected InterruptedException");
970	>	} catch (InterruptedException fail) {
971	>	threadFail("Unexpected InterruptedException");
972		}
973		}
974
#	Line 704 | Line 989 | public class JSR166TestCase extends Test
989		delay(millis);
990		for (Thread thread : threads)
991		assertTrue(thread.isAlive());
992	<	} catch (InterruptedException ie) {
993	<	fail("Unexpected InterruptedException");
992	>	} catch (InterruptedException fail) {
993	>	threadFail("Unexpected InterruptedException");
994		}
995		}
996
#	Line 726 | Line 1011 | public class JSR166TestCase extends Test
1011		future.get(timeoutMillis, MILLISECONDS);
1012		shouldThrow();
1013		} catch (TimeoutException success) {
1014	<	} catch (Exception e) {
1015	<	threadUnexpectedException(e);
1014	>	} catch (Exception fail) {
1015	>	threadUnexpectedException(fail);
1016		} finally { future.cancel(true); }
1017		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1018		}
#	Line 883 | Line 1168 | public class JSR166TestCase extends Test
1168		void sleep(long millis) {
1169		try {
1170		delay(millis);
1171	<	} catch (InterruptedException ie) {
1171	>	} catch (InterruptedException fail) {
1172		AssertionFailedError afe =
1173		new AssertionFailedError("Unexpected InterruptedException");
1174	<	afe.initCause(ie);
1174	>	afe.initCause(fail);
1175		throw afe;
1176		}
1177		}
#	Line 978 | Line 1263 | public class JSR166TestCase extends Test
1263		void awaitTermination(Thread t, long timeoutMillis) {
1264		try {
1265		t.join(timeoutMillis);
1266	<	} catch (InterruptedException ie) {
1267	<	threadUnexpectedException(ie);
1266	>	} catch (InterruptedException fail) {
1267	>	threadUnexpectedException(fail);
1268		} finally {
1269		if (t.getState() != Thread.State.TERMINATED) {
1270		t.interrupt();
1271	<	fail("Test timed out");
1271	>	threadFail("timed out waiting for thread to terminate");
1272		}
1273		}
1274		}
#	Line 1005 | Line 1290 | public class JSR166TestCase extends Test
1290		public final void run() {
1291		try {
1292		realRun();
1293	<	} catch (Throwable t) {
1294	<	threadUnexpectedException(t);
1293	>	} catch (Throwable fail) {
1294	>	threadUnexpectedException(fail);
1295		}
1296		}
1297		}
#	Line 1060 | Line 1345 | public class JSR166TestCase extends Test
1345		threadShouldThrow("InterruptedException");
1346		} catch (InterruptedException success) {
1347		threadAssertFalse(Thread.interrupted());
1348	<	} catch (Throwable t) {
1349	<	threadUnexpectedException(t);
1348	>	} catch (Throwable fail) {
1349	>	threadUnexpectedException(fail);
1350		}
1351		}
1352		}
#	Line 1072 | Line 1357 | public class JSR166TestCase extends Test
1357		public final T call() {
1358		try {
1359		return realCall();
1360	<	} catch (Throwable t) {
1361	<	threadUnexpectedException(t);
1360	>	} catch (Throwable fail) {
1361	>	threadUnexpectedException(fail);
1362		return null;
1363		}
1364		}
#	Line 1090 | Line 1375 | public class JSR166TestCase extends Test
1375		return result;
1376		} catch (InterruptedException success) {
1377		threadAssertFalse(Thread.interrupted());
1378	<	} catch (Throwable t) {
1379	<	threadUnexpectedException(t);
1378	>	} catch (Throwable fail) {
1379	>	threadUnexpectedException(fail);
1380		}
1381		return null;
1382		}
#	Line 1108 | Line 1393 | public class JSR166TestCase extends Test
1393		public static final String TEST_STRING = "a test string";
1394
1395		public static class StringTask implements Callable<String> {
1396	<	public String call() { return TEST_STRING; }
1396	>	final String value;
1397	>	public StringTask() { this(TEST_STRING); }
1398	>	public StringTask(String value) { this.value = value; }
1399	>	public String call() { return value; }
1400		}
1401
1402		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1121 | Line 1409 | public class JSR166TestCase extends Test
1409		}};
1410		}
1411
1412	<	public Runnable awaiter(final CountDownLatch latch) {
1412	>	public Runnable countDowner(final CountDownLatch latch) {
1413		return new CheckedRunnable() {
1414		public void realRun() throws InterruptedException {
1415	<	await(latch);
1415	>	latch.countDown();
1416		}};
1417		}
1418
1419	+	class LatchAwaiter extends CheckedRunnable {
1420	+	static final int NEW = 0;
1421	+	static final int RUNNING = 1;
1422	+	static final int DONE = 2;
1423	+	final CountDownLatch latch;
1424	+	int state = NEW;
1425	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1426	+	public void realRun() throws InterruptedException {
1427	+	state = 1;
1428	+	await(latch);
1429	+	state = 2;
1430	+	}
1431	+	}
1432	+
1433	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1434	+	return new LatchAwaiter(latch);
1435	+	}
1436	+
1437		public void await(CountDownLatch latch) {
1438		try {
1439	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1440	<	} catch (Throwable t) {
1441	<	threadUnexpectedException(t);
1439	>	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1440	>	fail("timed out waiting for CountDownLatch for "
1441	>	+ (LONG_DELAY_MS/1000) + " sec");
1442	>	} catch (Throwable fail) {
1443	>	threadUnexpectedException(fail);
1444		}
1445		}
1446
1447		public void await(Semaphore semaphore) {
1448		try {
1449	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1450	<	} catch (Throwable t) {
1451	<	threadUnexpectedException(t);
1449	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1450	>	fail("timed out waiting for Semaphore for "
1451	>	+ (LONG_DELAY_MS/1000) + " sec");
1452	>	} catch (Throwable fail) {
1453	>	threadUnexpectedException(fail);
1454		}
1455		}
1456
#	Line 1334 | Line 1644 | public class JSR166TestCase extends Test
1644		@Override protected final void compute() {
1645		try {
1646		realCompute();
1647	<	} catch (Throwable t) {
1648	<	threadUnexpectedException(t);
1647	>	} catch (Throwable fail) {
1648	>	threadUnexpectedException(fail);
1649		}
1650		}
1651		}
#	Line 1349 | Line 1659 | public class JSR166TestCase extends Test
1659		@Override protected final T compute() {
1660		try {
1661		return realCompute();
1662	<	} catch (Throwable t) {
1663	<	threadUnexpectedException(t);
1662	>	} catch (Throwable fail) {
1663	>	threadUnexpectedException(fail);
1664		return null;
1665		}
1666		}
#	Line 1374 | Line 1684 | public class JSR166TestCase extends Test
1684		public int await() {
1685		try {
1686		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1687	<	} catch (TimeoutException e) {
1687	>	} catch (TimeoutException timedOut) {
1688		throw new AssertionFailedError("timed out");
1689	<	} catch (Exception e) {
1689	>	} catch (Exception fail) {
1690		AssertionFailedError afe =
1691	<	new AssertionFailedError("Unexpected exception: " + e);
1692	<	afe.initCause(e);
1691	>	new AssertionFailedError("Unexpected exception: " + fail);
1692	>	afe.initCause(fail);
1693		throw afe;
1694		}
1695		}
#	Line 1407 | Line 1717 | public class JSR166TestCase extends Test
1717		q.remove();
1718		shouldThrow();
1719		} catch (NoSuchElementException success) {}
1720	<	} catch (InterruptedException ie) {
1411	<	threadUnexpectedException(ie);
1412	<	}
1720	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1721		}
1722
1723		void assertSerialEquals(Object x, Object y) {
#	Line 1428 | Line 1736 | public class JSR166TestCase extends Test
1736		oos.flush();
1737		oos.close();
1738		return bos.toByteArray();
1739	<	} catch (Throwable t) {
1740	<	threadUnexpectedException(t);
1739	>	} catch (Throwable fail) {
1740	>	threadUnexpectedException(fail);
1741		return new byte[0];
1742		}
1743		}
#	Line 1442 | Line 1750 | public class JSR166TestCase extends Test
1750		T clone = (T) ois.readObject();
1751		assertSame(o.getClass(), clone.getClass());
1752		return clone;
1753	<	} catch (Throwable t) {
1754	<	threadUnexpectedException(t);
1753	>	} catch (Throwable fail) {
1754	>	threadUnexpectedException(fail);
1755		return null;
1756		}
1757		}
#	Line 1468 | Line 1776 | public class JSR166TestCase extends Test
1776		shouldThrow(expectedExceptionClass.getName());
1777		}
1778		}
1779	+
1780	+	public void assertIteratorExhausted(Iterator<?> it) {
1781	+	try {
1782	+	it.next();
1783	+	shouldThrow();
1784	+	} catch (NoSuchElementException success) {}
1785	+	assertFalse(it.hasNext());
1786	+	}
1787		}

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