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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.129 by jsr166, Fri Feb 27 22:10:29 2015 UTC vs.
Revision 1.192 by jsr166, Sun May 22 01:09:21 2016 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
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	+	*/
16	+
17		import static java.util.concurrent.TimeUnit.MILLISECONDS;
18	+	import static java.util.concurrent.TimeUnit.MINUTES;
19		import static java.util.concurrent.TimeUnit.NANOSECONDS;
20
21		import java.io.ByteArrayInputStream;
#	Line 15 | Line 24 | import java.io.ObjectInputStream;
24		import java.io.ObjectOutputStream;
25		import java.lang.management.ManagementFactory;
26		import java.lang.management.ThreadInfo;
27	+	import java.lang.management.ThreadMXBean;
28	+	import java.lang.reflect.Constructor;
29		import java.lang.reflect.Method;
30	+	import java.lang.reflect.Modifier;
31	+	import java.nio.file.Files;
32	+	import java.nio.file.Paths;
33		import java.security.CodeSource;
34		import java.security.Permission;
35		import java.security.PermissionCollection;
#	Line 35 | Line 49 | import java.util.concurrent.BlockingQueu
49		import java.util.concurrent.Callable;
50		import java.util.concurrent.CountDownLatch;
51		import java.util.concurrent.CyclicBarrier;
52	+	import java.util.concurrent.ExecutionException;
53	+	import java.util.concurrent.Executors;
54		import java.util.concurrent.ExecutorService;
55	+	import java.util.concurrent.ForkJoinPool;
56		import java.util.concurrent.Future;
57		import java.util.concurrent.RecursiveAction;
58		import java.util.concurrent.RecursiveTask;
#	Line 44 | Line 61 | import java.util.concurrent.Semaphore;
61		import java.util.concurrent.ThreadFactory;
62		import java.util.concurrent.ThreadPoolExecutor;
63		import java.util.concurrent.TimeoutException;
64	+	import java.util.concurrent.atomic.AtomicBoolean;
65		import java.util.concurrent.atomic.AtomicReference;
66	+	import java.util.regex.Matcher;
67		import java.util.regex.Pattern;
68
69		import junit.framework.AssertionFailedError;
70		import junit.framework.Test;
71		import junit.framework.TestCase;
72	+	import junit.framework.TestResult;
73		import junit.framework.TestSuite;
74
75		/**
#	Line 62 | Line 82 | import junit.framework.TestSuite;
82		*
83		* <ol>
84		*
85	<	* <li> All assertions in code running in generated threads must use
85	>	* <li>All assertions in code running in generated threads must use
86		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
87		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
88		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
89		* particularly recommended) for other code to use these forms too.
90		* Only the most typically used JUnit assertion methods are defined
91	<	* this way, but enough to live with.</li>
91	>	* this way, but enough to live with.
92		*
93	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
93	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
94		* to invoke {@code super.setUp} and {@code super.tearDown} within
95		* them. These methods are used to clear and check for thread
96	<	* assertion failures.</li>
96	>	* assertion failures.
97		*
98		* <li>All delays and timeouts must use one of the constants {@code
99		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 84 | Line 104 | import junit.framework.TestSuite;
104		* is always discriminable as larger than SHORT and smaller than
105		* MEDIUM.  And so on. These constants are set to conservative values,
106		* but even so, if there is ever any doubt, they can all be increased
107	<	* in one spot to rerun tests on slower platforms.</li>
107	>	* in one spot to rerun tests on slower platforms.
108		*
109	<	* <li> All threads generated must be joined inside each test case
109	>	* <li>All threads generated must be joined inside each test case
110		* method (or {@code fail} to do so) before returning from the
111		* method. The {@code joinPool} method can be used to do this when
112	<	* using Executors.</li>
112	>	* using Executors.
113		*
114		* </ol>
115		*
116		* <p><b>Other notes</b>
117		* <ul>
118		*
119	<	* <li> Usually, there is one testcase method per JSR166 method
119	>	* <li>Usually, there is one testcase method per JSR166 method
120		* covering "normal" operation, and then as many exception-testing
121		* methods as there are exceptions the method can throw. Sometimes
122		* there are multiple tests per JSR166 method when the different
123		* "normal" behaviors differ significantly. And sometimes testcases
124	<	* cover multiple methods when they cannot be tested in
105	<	* isolation.</li>
124	>	* cover multiple methods when they cannot be tested in isolation.
125		*
126	<	* <li> The documentation style for testcases is to provide as javadoc
126	>	* <li>The documentation style for testcases is to provide as javadoc
127		* a simple sentence or two describing the property that the testcase
128		* method purports to test. The javadocs do not say anything about how
129	<	* the property is tested. To find out, read the code.</li>
129	>	* the property is tested. To find out, read the code.
130		*
131	<	* <li> These tests are "conformance tests", and do not attempt to
131	>	* <li>These tests are "conformance tests", and do not attempt to
132		* test throughput, latency, scalability or other performance factors
133		* (see the separate "jtreg" tests for a set intended to check these
134		* for the most central aspects of functionality.) So, most tests use
135		* the smallest sensible numbers of threads, collection sizes, etc
136	<	* needed to check basic conformance.</li>
136	>	* needed to check basic conformance.
137		*
138		* <li>The test classes currently do not declare inclusion in
139		* any particular package to simplify things for people integrating
140	<	* them in TCK test suites.</li>
140	>	* them in TCK test suites.
141		*
142	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
143	<	* runs all JSR166 unit tests.</li>
142	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
143	>	* runs all JSR166 unit tests.
144		*
145		* </ul>
146		*/
#	Line 160 | Line 179 | public class JSR166TestCase extends Test
179		Integer.getInteger("jsr166.runsPerTest", 1);
180
181		/**
182	+	* The number of repetitions of the test suite (for finding leaks?).
183	+	*/
184	+	private static final int suiteRuns =
185	+	Integer.getInteger("jsr166.suiteRuns", 1);
186	+
187	+	/**
188	+	* Returns the value of the system property, or NaN if not defined.
189	+	*/
190	+	private static float systemPropertyValue(String name) {
191	+	String floatString = System.getProperty(name);
192	+	if (floatString == null)
193	+	return Float.NaN;
194	+	try {
195	+	return Float.parseFloat(floatString);
196	+	} catch (NumberFormatException ex) {
197	+	throw new IllegalArgumentException(
198	+	String.format("Bad float value in system property %s=%s",
199	+	name, floatString));
200	+	}
201	+	}
202	+
203	+	/**
204	+	* The scaling factor to apply to standard delays used in tests.
205	+	* May be initialized from any of:
206	+	* - the "jsr166.delay.factor" system property
207	+	* - the "test.timeout.factor" system property (as used by jtreg)
208	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
209	+	* - hard-coded fuzz factor when using a known slowpoke VM
210	+	*/
211	+	private static final float delayFactor = delayFactor();
212	+
213	+	private static float delayFactor() {
214	+	float x;
215	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
216	+	return x;
217	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
218	+	return x;
219	+	String prop = System.getProperty("java.vm.version");
220	+	if (prop != null && prop.matches(".*debug.*"))
221	+	return 4.0f; // How much slower is fastdebug than product?!
222	+	return 1.0f;
223	+	}
224	+
225	+	public JSR166TestCase() { super(); }
226	+	public JSR166TestCase(String name) { super(name); }
227	+
228	+	/**
229		* A filter for tests to run, matching strings of the form
230		* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
231		* Usefully combined with jsr166.runsPerTest.
#	Line 171 | Line 237 | public class JSR166TestCase extends Test
237		return (regex == null) ? null : Pattern.compile(regex);
238		}
239
240	<	protected void runTest() throws Throwable {
240	>	// Instrumentation to debug very rare, but very annoying hung test runs.
241	>	static volatile TestCase currentTestCase;
242	>	// static volatile int currentRun = 0;
243	>	static {
244	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
245	>	// Avoid spurious reports with enormous runsPerTest.
246	>	// A single test case run should never take more than 1 second.
247	>	// But let's cap it at the high end too ...
248	>	final int timeoutMinutes =
249	>	Math.min(15, Math.max(runsPerTest / 60, 1));
250	>	for (TestCase lastTestCase = currentTestCase;;) {
251	>	try { MINUTES.sleep(timeoutMinutes); }
252	>	catch (InterruptedException unexpected) { break; }
253	>	if (lastTestCase == currentTestCase) {
254	>	System.err.printf(
255	>	"Looks like we're stuck running test: %s%n",
256	>	lastTestCase);
257	>	//                     System.err.printf(
258	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
259	>	//                         lastTestCase, currentRun, runsPerTest);
260	>	//                     System.err.println("availableProcessors=" +
261	>	//                         Runtime.getRuntime().availableProcessors());
262	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
263	>	dumpTestThreads();
264	>	// one stack dump is probably enough; more would be spam
265	>	break;
266	>	}
267	>	lastTestCase = currentTestCase;
268	>	}}};
269	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
270	>	thread.setDaemon(true);
271	>	thread.start();
272	>	}
273	>
274	>	//     public static String cpuModel() {
275	>	//         try {
276	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
277	>	//                 .matcher(new String(
278	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
279	>	//             matcher.find();
280	>	//             return matcher.group(1);
281	>	//         } catch (Exception ex) { return null; }
282	>	//     }
283	>
284	>	public void runBare() throws Throwable {
285	>	currentTestCase = this;
286		if (methodFilter == null
287	<	|| methodFilter.matcher(toString()).find()) {
288	<	for (int i = 0; i < runsPerTest; i++) {
289	<	if (profileTests)
290	<	runTestProfiled();
291	<	else
292	<	super.runTest();
293	<	}
287	>	|| methodFilter.matcher(toString()).find())
288	>	super.runBare();
289	>	}
290	>
291	>	protected void runTest() throws Throwable {
292	>	for (int i = 0; i < runsPerTest; i++) {
293	>	// currentRun = i;
294	>	if (profileTests)
295	>	runTestProfiled();
296	>	else
297	>	super.runTest();
298		}
299		}
300
301		protected void runTestProfiled() throws Throwable {
302	<	// Warmup run, notably to trigger all needed classloading.
303	<	super.runTest();
189	<	long t0 = System.nanoTime();
190	<	try {
302	>	for (int i = 0; i < 2; i++) {
303	>	long startTime = System.nanoTime();
304		super.runTest();
305	<	} finally {
306	<	long elapsedMillis = millisElapsedSince(t0);
307	<	if (elapsedMillis >= profileThreshold)
305	>	long elapsedMillis = millisElapsedSince(startTime);
306	>	if (elapsedMillis < profileThreshold)
307	>	break;
308	>	// Never report first run of any test; treat it as a
309	>	// warmup run, notably to trigger all needed classloading,
310	>	if (i > 0)
311		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
312		}
313		}
314
315		/**
316		* Runs all JSR166 unit tests using junit.textui.TestRunner.
201	–	* Optional command line arg provides the number of iterations to
202	–	* repeat running the tests.
317		*/
318		public static void main(String[] args) {
319	+	main(suite(), args);
320	+	}
321	+
322	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
323	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
324	+	long runTime;
325	+	public void startTest(Test test) {}
326	+	protected void printHeader(long runTime) {
327	+	this.runTime = runTime; // defer printing for later
328	+	}
329	+	protected void printFooter(TestResult result) {
330	+	if (result.wasSuccessful()) {
331	+	getWriter().println("OK (" + result.runCount() + " tests)"
332	+	+ "  Time: " + elapsedTimeAsString(runTime));
333	+	} else {
334	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
335	+	super.printFooter(result);
336	+	}
337	+	}
338	+	}
339	+
340	+	/**
341	+	* Returns a TestRunner that doesn't bother with unnecessary
342	+	* fluff, like printing a "." for each test case.
343	+	*/
344	+	static junit.textui.TestRunner newPithyTestRunner() {
345	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
346	+	runner.setPrinter(new PithyResultPrinter(System.out));
347	+	return runner;
348	+	}
349	+
350	+	/**
351	+	* Runs all unit tests in the given test suite.
352	+	* Actual behavior influenced by jsr166.* system properties.
353	+	*/
354	+	static void main(Test suite, String[] args) {
355		if (useSecurityManager) {
356		System.err.println("Setting a permissive security manager");
357		Policy.setPolicy(permissivePolicy());
358		System.setSecurityManager(new SecurityManager());
359		}
360	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
361	<
362	<	Test s = suite();
363	<	for (int i = 0; i < iters; ++i) {
214	<	junit.textui.TestRunner.run(s);
360	>	for (int i = 0; i < suiteRuns; i++) {
361	>	TestResult result = newPithyTestRunner().doRun(suite);
362	>	if (!result.wasSuccessful())
363	>	System.exit(1);
364		System.gc();
365		System.runFinalization();
366		}
218	–	System.exit(0);
367		}
368
369		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 266 | Line 414 | public class JSR166TestCase extends Test
414		public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
415		public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
416		public static boolean atLeastJava9() {
417	<	// As of 2014-05, java9 still uses 52.0 class file version
418	<	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
417	>	return JAVA_CLASS_VERSION >= 53.0
418	>	// As of 2015-09, java9 still uses 52.0 class file version
419	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
420	>	}
421	>	public static boolean atLeastJava10() {
422	>	return JAVA_CLASS_VERSION >= 54.0
423	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
424		}
425
426		/**
#	Line 356 | Line 509 | public class JSR166TestCase extends Test
509		"LongAdderTest",
510		"SplittableRandomTest",
511		"StampedLockTest",
512	+	"SubmissionPublisherTest",
513		"ThreadLocalRandom8Test",
514	+	"TimeUnit8Test",
515		};
516		addNamedTestClasses(suite, java8TestClassNames);
517		}
#	Line 364 | Line 519 | public class JSR166TestCase extends Test
519		// Java9+ test classes
520		if (atLeastJava9()) {
521		String[] java9TestClassNames = {
522	<	"ThreadPoolExecutor9Test",
522	>	"ExecutorCompletionService9Test",
523		};
524		addNamedTestClasses(suite, java9TestClassNames);
525		}
#	Line 372 | Line 527 | public class JSR166TestCase extends Test
527		return suite;
528		}
529
530	+	/** Returns list of junit-style test method names in given class. */
531	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
532	+	Method[] methods = testClass.getDeclaredMethods();
533	+	ArrayList<String> names = new ArrayList<String>(methods.length);
534	+	for (Method method : methods) {
535	+	if (method.getName().startsWith("test")
536	+	&& Modifier.isPublic(method.getModifiers())
537	+	// method.getParameterCount() requires jdk8+
538	+	&& method.getParameterTypes().length == 0) {
539	+	names.add(method.getName());
540	+	}
541	+	}
542	+	return names;
543	+	}
544	+
545	+	/**
546	+	* Returns junit-style testSuite for the given test class, but
547	+	* parameterized by passing extra data to each test.
548	+	*/
549	+	public static <ExtraData> Test parameterizedTestSuite
550	+	(Class<? extends JSR166TestCase> testClass,
551	+	Class<ExtraData> dataClass,
552	+	ExtraData data) {
553	+	try {
554	+	TestSuite suite = new TestSuite();
555	+	Constructor c =
556	+	testClass.getDeclaredConstructor(dataClass, String.class);
557	+	for (String methodName : testMethodNames(testClass))
558	+	suite.addTest((Test) c.newInstance(data, methodName));
559	+	return suite;
560	+	} catch (Exception e) {
561	+	throw new Error(e);
562	+	}
563	+	}
564	+
565	+	/**
566	+	* Returns junit-style testSuite for the jdk8 extension of the
567	+	* given test class, but parameterized by passing extra data to
568	+	* each test.  Uses reflection to allow compilation in jdk7.
569	+	*/
570	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
571	+	(Class<? extends JSR166TestCase> testClass,
572	+	Class<ExtraData> dataClass,
573	+	ExtraData data) {
574	+	if (atLeastJava8()) {
575	+	String name = testClass.getName();
576	+	String name8 = name.replaceAll("Test$", "8Test");
577	+	if (name.equals(name8)) throw new Error(name);
578	+	try {
579	+	return (Test)
580	+	Class.forName(name8)
581	+	.getMethod("testSuite", new Class[] { dataClass })
582	+	.invoke(null, data);
583	+	} catch (Exception e) {
584	+	throw new Error(e);
585	+	}
586	+	} else {
587	+	return new TestSuite();
588	+	}
589	+	}
590	+
591		// Delays for timing-dependent tests, in milliseconds.
592
593		public static long SHORT_DELAY_MS;
#	Line 380 | Line 596 | public class JSR166TestCase extends Test
596		public static long LONG_DELAY_MS;
597
598		/**
599	<	* Returns the shortest timed delay. This could
600	<	* be reimplemented to use for example a Property.
599	>	* Returns the shortest timed delay. This can be scaled up for
600	>	* slow machines using the jsr166.delay.factor system property,
601	>	* or via jtreg's -timeoutFactor: flag.
602	>	* http://openjdk.java.net/jtreg/command-help.html
603		*/
604		protected long getShortDelay() {
605	<	return 50;
605	>	return (long) (50 * delayFactor);
606		}
607
608		/**
#	Line 406 | Line 624 | public class JSR166TestCase extends Test
624		}
625
626		/**
627	<	* Returns a new Date instance representing a time delayMillis
628	<	* milliseconds in the future.
627	>	* Returns a new Date instance representing a time at least
628	>	* delayMillis milliseconds in the future.
629		*/
630		Date delayedDate(long delayMillis) {
631	<	return new Date(System.currentTimeMillis() + delayMillis);
631	>	// Add 1 because currentTimeMillis is known to round into the past.
632	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
633		}
634
635		/**
#	Line 426 | Line 645 | public class JSR166TestCase extends Test
645		* the same test have no effect.
646		*/
647		public void threadRecordFailure(Throwable t) {
648	+	System.err.println(t);
649	+	dumpTestThreads();
650		threadFailure.compareAndSet(null, t);
651		}
652
#	Line 433 | Line 654 | public class JSR166TestCase extends Test
654		setDelays();
655		}
656
657	+	void tearDownFail(String format, Object... args) {
658	+	String msg = toString() + ": " + String.format(format, args);
659	+	System.err.println(msg);
660	+	dumpTestThreads();
661	+	throw new AssertionFailedError(msg);
662	+	}
663	+
664		/**
665		* Extra checks that get done for all test cases.
666		*
#	Line 460 | Line 688 | public class JSR166TestCase extends Test
688		}
689
690		if (Thread.interrupted())
691	<	throw new AssertionFailedError("interrupt status set in main thread");
691	>	tearDownFail("interrupt status set in main thread");
692
693		checkForkJoinPoolThreadLeaks();
694		}
695
696		/**
697	<	* Finds missing try { ... } finally { joinPool(e); }
697	>	* Finds missing PoolCleaners
698		*/
699		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
700	<	Thread[] survivors = new Thread[5];
700	>	Thread[] survivors = new Thread[7];
701		int count = Thread.enumerate(survivors);
702		for (int i = 0; i < count; i++) {
703		Thread thread = survivors[i];
#	Line 477 | Line 705 | public class JSR166TestCase extends Test
705		if (name.startsWith("ForkJoinPool-")) {
706		// give thread some time to terminate
707		thread.join(LONG_DELAY_MS);
708	<	if (!thread.isAlive()) continue;
709	<	thread.stop();
710	<	throw new AssertionFailedError
483	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
484	<	toString(), name));
708	>	if (thread.isAlive())
709	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
710	>	thread);
711		}
712		}
713	+
714	+	if (!ForkJoinPool.commonPool()
715	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
716	+	tearDownFail("ForkJoin common pool thread stuck");
717		}
718
719		/**
#	Line 496 | Line 726 | public class JSR166TestCase extends Test
726		fail(reason);
727		} catch (AssertionFailedError t) {
728		threadRecordFailure(t);
729	<	fail(reason);
729	>	throw t;
730		}
731		}
732
#	Line 623 | Line 853 | public class JSR166TestCase extends Test
853		/**
854		* Delays, via Thread.sleep, for the given millisecond delay, but
855		* if the sleep is shorter than specified, may re-sleep or yield
856	<	* until time elapses.
856	>	* until time elapses.  Ensures that the given time, as measured
857	>	* by System.nanoTime(), has elapsed.
858		*/
859		static void delay(long millis) throws InterruptedException {
860	<	long startTime = System.nanoTime();
861	<	long ns = millis * 1000 * 1000;
862	<	for (;;) {
860	>	long nanos = millis * (1000 * 1000);
861	>	final long wakeupTime = System.nanoTime() + nanos;
862	>	do {
863		if (millis > 0L)
864		Thread.sleep(millis);
865		else // too short to sleep
866		Thread.yield();
867	<	long d = ns - (System.nanoTime() - startTime);
868	<	if (d > 0L)
869	<	millis = d / (1000 * 1000);
870	<	else
871	<	break;
867	>	nanos = wakeupTime - System.nanoTime();
868	>	millis = nanos / (1000 * 1000);
869	>	} while (nanos >= 0L);
870	>	}
871	>
872	>	/**
873	>	* Allows use of try-with-resources with per-test thread pools.
874	>	*/
875	>	class PoolCleaner implements AutoCloseable {
876	>	private final ExecutorService pool;
877	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
878	>	public void close() { joinPool(pool); }
879	>	}
880	>
881	>	/**
882	>	* An extension of PoolCleaner that has an action to release the pool.
883	>	*/
884	>	class PoolCleanerWithReleaser extends PoolCleaner {
885	>	private final Runnable releaser;
886	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
887	>	super(pool);
888	>	this.releaser = releaser;
889	>	}
890	>	public void close() {
891	>	try {
892	>	releaser.run();
893	>	} finally {
894	>	super.close();
895	>	}
896		}
897		}
898
899	+	PoolCleaner cleaner(ExecutorService pool) {
900	+	return new PoolCleaner(pool);
901	+	}
902	+
903	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
904	+	return new PoolCleanerWithReleaser(pool, releaser);
905	+	}
906	+
907	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
908	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
909	+	}
910	+
911	+	Runnable releaser(final CountDownLatch latch) {
912	+	return new Runnable() { public void run() {
913	+	do { latch.countDown(); }
914	+	while (latch.getCount() > 0);
915	+	}};
916	+	}
917	+
918	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
919	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
920	+	}
921	+
922	+	Runnable releaser(final AtomicBoolean flag) {
923	+	return new Runnable() { public void run() { flag.set(true); }};
924	+	}
925	+
926		/**
927		* Waits out termination of a thread pool or fails doing so.
928		*/
929	<	void joinPool(ExecutorService exec) {
929	>	void joinPool(ExecutorService pool) {
930		try {
931	<	exec.shutdown();
932	<	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
933	<	fail("ExecutorService " + exec +
934	<	" did not terminate in a timely manner");
931	>	pool.shutdown();
932	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
933	>	try {
934	>	threadFail("ExecutorService " + pool +
935	>	" did not terminate in a timely manner");
936	>	} finally {
937	>	// last resort, for the benefit of subsequent tests
938	>	pool.shutdownNow();
939	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
940	>	}
941	>	}
942		} catch (SecurityException ok) {
943		// Allowed in case test doesn't have privs
944		} catch (InterruptedException fail) {
945	<	fail("Unexpected InterruptedException");
945	>	threadFail("Unexpected InterruptedException");
946	>	}
947	>	}
948	>
949	>	/** Like Runnable, but with the freedom to throw anything */
950	>	interface Action { public void run() throws Throwable; }
951	>
952	>	/**
953	>	* Runs all the given actions in parallel, failing if any fail.
954	>	* Useful for running multiple variants of tests that are
955	>	* necessarily individually slow because they must block.
956	>	*/
957	>	void testInParallel(Action ... actions) {
958	>	ExecutorService pool = Executors.newCachedThreadPool();
959	>	try (PoolCleaner cleaner = cleaner(pool)) {
960	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
961	>	for (final Action action : actions)
962	>	futures.add(pool.submit(new CheckedRunnable() {
963	>	public void realRun() throws Throwable { action.run();}}));
964	>	for (Future<?> future : futures)
965	>	try {
966	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
967	>	} catch (ExecutionException ex) {
968	>	threadUnexpectedException(ex.getCause());
969	>	} catch (Exception ex) {
970	>	threadUnexpectedException(ex);
971	>	}
972		}
973		}
974
975		/**
976	<	* A debugging tool to print all stack traces, as jstack does.
976	>	* A debugging tool to print stack traces of most threads, as jstack does.
977	>	* Uninteresting threads are filtered out.
978		*/
979	<	static void printAllStackTraces() {
980	<	for (ThreadInfo info :
981	<	ManagementFactory.getThreadMXBean()
982	<	.dumpAllThreads(true, true))
979	>	static void dumpTestThreads() {
980	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
981	>	System.err.println("------ stacktrace dump start ------");
982	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
983	>	String name = info.getThreadName();
984	>	if ("Signal Dispatcher".equals(name))
985	>	continue;
986	>	if ("Reference Handler".equals(name)
987	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
988	>	continue;
989	>	if ("Finalizer".equals(name)
990	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
991	>	continue;
992	>	if ("checkForWedgedTest".equals(name))
993	>	continue;
994		System.err.print(info);
995	+	}
996	+	System.err.println("------ stacktrace dump end ------");
997		}
998
999		/**
#	Line 684 | Line 1013 | public class JSR166TestCase extends Test
1013		delay(millis);
1014		assertTrue(thread.isAlive());
1015		} catch (InterruptedException fail) {
1016	<	fail("Unexpected InterruptedException");
1016	>	threadFail("Unexpected InterruptedException");
1017		}
1018		}
1019
#	Line 706 | Line 1035 | public class JSR166TestCase extends Test
1035		for (Thread thread : threads)
1036		assertTrue(thread.isAlive());
1037		} catch (InterruptedException fail) {
1038	<	fail("Unexpected InterruptedException");
1038	>	threadFail("Unexpected InterruptedException");
1039		}
1040		}
1041
#	Line 984 | Line 1313 | public class JSR166TestCase extends Test
1313		} finally {
1314		if (t.getState() != Thread.State.TERMINATED) {
1315		t.interrupt();
1316	<	fail("Test timed out");
1316	>	threadFail("timed out waiting for thread to terminate");
1317		}
1318		}
1319		}
#	Line 1109 | Line 1438 | public class JSR166TestCase extends Test
1438		public static final String TEST_STRING = "a test string";
1439
1440		public static class StringTask implements Callable<String> {
1441	<	public String call() { return TEST_STRING; }
1441	>	final String value;
1442	>	public StringTask() { this(TEST_STRING); }
1443	>	public StringTask(String value) { this.value = value; }
1444	>	public String call() { return value; }
1445		}
1446
1447		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1122 | Line 1454 | public class JSR166TestCase extends Test
1454		}};
1455		}
1456
1457	<	public Runnable awaiter(final CountDownLatch latch) {
1457	>	public Runnable countDowner(final CountDownLatch latch) {
1458		return new CheckedRunnable() {
1459		public void realRun() throws InterruptedException {
1460	<	await(latch);
1460	>	latch.countDown();
1461		}};
1462		}
1463
1464	<	public void await(CountDownLatch latch) {
1464	>	class LatchAwaiter extends CheckedRunnable {
1465	>	static final int NEW = 0;
1466	>	static final int RUNNING = 1;
1467	>	static final int DONE = 2;
1468	>	final CountDownLatch latch;
1469	>	int state = NEW;
1470	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1471	>	public void realRun() throws InterruptedException {
1472	>	state = 1;
1473	>	await(latch);
1474	>	state = 2;
1475	>	}
1476	>	}
1477	>
1478	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1479	>	return new LatchAwaiter(latch);
1480	>	}
1481	>
1482	>	public void await(CountDownLatch latch, long timeoutMillis) {
1483		try {
1484	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1484	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1485	>	fail("timed out waiting for CountDownLatch for "
1486	>	+ (timeoutMillis/1000) + " sec");
1487		} catch (Throwable fail) {
1488		threadUnexpectedException(fail);
1489		}
1490		}
1491
1492	+	public void await(CountDownLatch latch) {
1493	+	await(latch, LONG_DELAY_MS);
1494	+	}
1495	+
1496		public void await(Semaphore semaphore) {
1497		try {
1498	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1498	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1499	>	fail("timed out waiting for Semaphore for "
1500	>	+ (LONG_DELAY_MS/1000) + " sec");
1501		} catch (Throwable fail) {
1502		threadUnexpectedException(fail);
1503		}
#	Line 1475 | Line 1833 | public class JSR166TestCase extends Test
1833		} catch (NoSuchElementException success) {}
1834		assertFalse(it.hasNext());
1835		}
1836	+
1837	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1838	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1839	+	}
1840	+
1841	+	public Runnable runnableThrowing(final RuntimeException ex) {
1842	+	return new Runnable() { public void run() { throw ex; }};
1843	+	}
1844		}

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