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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 1.197 by jsr166, Wed Jun 22 14:40:36 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	+	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
16	+	*/
17	+
18		import static java.util.concurrent.TimeUnit.MILLISECONDS;
19	+	import static java.util.concurrent.TimeUnit.MINUTES;
20		import static java.util.concurrent.TimeUnit.NANOSECONDS;
21
22		import java.io.ByteArrayInputStream;
#	Line 15 | Line 25 | import java.io.ObjectInputStream;
25		import java.io.ObjectOutputStream;
26		import java.lang.management.ManagementFactory;
27		import java.lang.management.ThreadInfo;
28	+	import java.lang.management.ThreadMXBean;
29	+	import java.lang.reflect.Constructor;
30		import java.lang.reflect.Method;
31	+	import java.lang.reflect.Modifier;
32	+	import java.nio.file.Files;
33	+	import java.nio.file.Paths;
34		import java.security.CodeSource;
35		import java.security.Permission;
36		import java.security.PermissionCollection;
#	Line 27 | Line 42 | import java.util.ArrayList;
42		import java.util.Arrays;
43		import java.util.Date;
44		import java.util.Enumeration;
45	+	import java.util.Iterator;
46		import java.util.List;
47		import java.util.NoSuchElementException;
48		import java.util.PropertyPermission;
#	Line 34 | Line 50 | import java.util.concurrent.BlockingQueu
50		import java.util.concurrent.Callable;
51		import java.util.concurrent.CountDownLatch;
52		import java.util.concurrent.CyclicBarrier;
53	+	import java.util.concurrent.ExecutionException;
54	+	import java.util.concurrent.Executors;
55		import java.util.concurrent.ExecutorService;
56	+	import java.util.concurrent.ForkJoinPool;
57		import java.util.concurrent.Future;
58		import java.util.concurrent.RecursiveAction;
59		import java.util.concurrent.RecursiveTask;
60		import java.util.concurrent.RejectedExecutionHandler;
61		import java.util.concurrent.Semaphore;
62	+	import java.util.concurrent.SynchronousQueue;
63		import java.util.concurrent.ThreadFactory;
64		import java.util.concurrent.ThreadPoolExecutor;
65		import java.util.concurrent.TimeoutException;
66	+	import java.util.concurrent.atomic.AtomicBoolean;
67		import java.util.concurrent.atomic.AtomicReference;
68	+	import java.util.regex.Matcher;
69		import java.util.regex.Pattern;
70
71		import junit.framework.AssertionFailedError;
72		import junit.framework.Test;
73		import junit.framework.TestCase;
74	+	import junit.framework.TestResult;
75		import junit.framework.TestSuite;
76
77		/**
#	Line 61 | Line 84 | import junit.framework.TestSuite;
84		*
85		* <ol>
86		*
87	<	* <li> All assertions in code running in generated threads must use
87	>	* <li>All assertions in code running in generated threads must use
88		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
89		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
90		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
91		* particularly recommended) for other code to use these forms too.
92		* Only the most typically used JUnit assertion methods are defined
93	<	* this way, but enough to live with.</li>
93	>	* this way, but enough to live with.
94		*
95	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
95	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
96		* to invoke {@code super.setUp} and {@code super.tearDown} within
97		* them. These methods are used to clear and check for thread
98	<	* assertion failures.</li>
98	>	* assertion failures.
99		*
100		* <li>All delays and timeouts must use one of the constants {@code
101		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 83 | Line 106 | import junit.framework.TestSuite;
106		* is always discriminable as larger than SHORT and smaller than
107		* MEDIUM.  And so on. These constants are set to conservative values,
108		* but even so, if there is ever any doubt, they can all be increased
109	<	* in one spot to rerun tests on slower platforms.</li>
109	>	* in one spot to rerun tests on slower platforms.
110		*
111	<	* <li> All threads generated must be joined inside each test case
111	>	* <li>All threads generated must be joined inside each test case
112		* method (or {@code fail} to do so) before returning from the
113		* method. The {@code joinPool} method can be used to do this when
114	<	* using Executors.</li>
114	>	* using Executors.
115		*
116		* </ol>
117		*
118		* <p><b>Other notes</b>
119		* <ul>
120		*
121	<	* <li> Usually, there is one testcase method per JSR166 method
121	>	* <li>Usually, there is one testcase method per JSR166 method
122		* covering "normal" operation, and then as many exception-testing
123		* methods as there are exceptions the method can throw. Sometimes
124		* there are multiple tests per JSR166 method when the different
125		* "normal" behaviors differ significantly. And sometimes testcases
126	<	* cover multiple methods when they cannot be tested in
104	<	* isolation.</li>
126	>	* cover multiple methods when they cannot be tested in isolation.
127		*
128	<	* <li> The documentation style for testcases is to provide as javadoc
128	>	* <li>The documentation style for testcases is to provide as javadoc
129		* a simple sentence or two describing the property that the testcase
130		* method purports to test. The javadocs do not say anything about how
131	<	* the property is tested. To find out, read the code.</li>
131	>	* the property is tested. To find out, read the code.
132		*
133	<	* <li> These tests are "conformance tests", and do not attempt to
133	>	* <li>These tests are "conformance tests", and do not attempt to
134		* test throughput, latency, scalability or other performance factors
135		* (see the separate "jtreg" tests for a set intended to check these
136		* for the most central aspects of functionality.) So, most tests use
137		* the smallest sensible numbers of threads, collection sizes, etc
138	<	* needed to check basic conformance.</li>
138	>	* needed to check basic conformance.
139		*
140		* <li>The test classes currently do not declare inclusion in
141		* any particular package to simplify things for people integrating
142	<	* them in TCK test suites.</li>
142	>	* them in TCK test suites.
143		*
144	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
145	<	* runs all JSR166 unit tests.</li>
144	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
145	>	* runs all JSR166 unit tests.
146		*
147		* </ul>
148		*/
#	Line 159 | Line 181 | public class JSR166TestCase extends Test
181		Integer.getInteger("jsr166.runsPerTest", 1);
182
183		/**
184	+	* The number of repetitions of the test suite (for finding leaks?).
185	+	*/
186	+	private static final int suiteRuns =
187	+	Integer.getInteger("jsr166.suiteRuns", 1);
188	+
189	+	/**
190	+	* Returns the value of the system property, or NaN if not defined.
191	+	*/
192	+	private static float systemPropertyValue(String name) {
193	+	String floatString = System.getProperty(name);
194	+	if (floatString == null)
195	+	return Float.NaN;
196	+	try {
197	+	return Float.parseFloat(floatString);
198	+	} catch (NumberFormatException ex) {
199	+	throw new IllegalArgumentException(
200	+	String.format("Bad float value in system property %s=%s",
201	+	name, floatString));
202	+	}
203	+	}
204	+
205	+	/**
206	+	* The scaling factor to apply to standard delays used in tests.
207	+	* May be initialized from any of:
208	+	* - the "jsr166.delay.factor" system property
209	+	* - the "test.timeout.factor" system property (as used by jtreg)
210	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
211	+	* - hard-coded fuzz factor when using a known slowpoke VM
212	+	*/
213	+	private static final float delayFactor = delayFactor();
214	+
215	+	private static float delayFactor() {
216	+	float x;
217	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
218	+	return x;
219	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
220	+	return x;
221	+	String prop = System.getProperty("java.vm.version");
222	+	if (prop != null && prop.matches(".*debug.*"))
223	+	return 4.0f; // How much slower is fastdebug than product?!
224	+	return 1.0f;
225	+	}
226	+
227	+	public JSR166TestCase() { super(); }
228	+	public JSR166TestCase(String name) { super(name); }
229	+
230	+	/**
231		* A filter for tests to run, matching strings of the form
232		* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
233		* Usefully combined with jsr166.runsPerTest.
#	Line 170 | Line 239 | public class JSR166TestCase extends Test
239		return (regex == null) ? null : Pattern.compile(regex);
240		}
241
242	<	protected void runTest() throws Throwable {
242	>	// Instrumentation to debug very rare, but very annoying hung test runs.
243	>	static volatile TestCase currentTestCase;
244	>	// static volatile int currentRun = 0;
245	>	static {
246	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
247	>	// Avoid spurious reports with enormous runsPerTest.
248	>	// A single test case run should never take more than 1 second.
249	>	// But let's cap it at the high end too ...
250	>	final int timeoutMinutes =
251	>	Math.min(15, Math.max(runsPerTest / 60, 1));
252	>	for (TestCase lastTestCase = currentTestCase;;) {
253	>	try { MINUTES.sleep(timeoutMinutes); }
254	>	catch (InterruptedException unexpected) { break; }
255	>	if (lastTestCase == currentTestCase) {
256	>	System.err.printf(
257	>	"Looks like we're stuck running test: %s%n",
258	>	lastTestCase);
259	>	//                     System.err.printf(
260	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
261	>	//                         lastTestCase, currentRun, runsPerTest);
262	>	//                     System.err.println("availableProcessors=" +
263	>	//                         Runtime.getRuntime().availableProcessors());
264	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
265	>	dumpTestThreads();
266	>	// one stack dump is probably enough; more would be spam
267	>	break;
268	>	}
269	>	lastTestCase = currentTestCase;
270	>	}}};
271	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
272	>	thread.setDaemon(true);
273	>	thread.start();
274	>	}
275	>
276	>	//     public static String cpuModel() {
277	>	//         try {
278	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
279	>	//                 .matcher(new String(
280	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
281	>	//             matcher.find();
282	>	//             return matcher.group(1);
283	>	//         } catch (Exception ex) { return null; }
284	>	//     }
285	>
286	>	public void runBare() throws Throwable {
287	>	currentTestCase = this;
288		if (methodFilter == null
289	<	|| methodFilter.matcher(toString()).find()) {
290	<	for (int i = 0; i < runsPerTest; i++) {
291	<	if (profileTests)
292	<	runTestProfiled();
293	<	else
294	<	super.runTest();
295	<	}
289	>	|| methodFilter.matcher(toString()).find())
290	>	super.runBare();
291	>	}
292	>
293	>	protected void runTest() throws Throwable {
294	>	for (int i = 0; i < runsPerTest; i++) {
295	>	// currentRun = i;
296	>	if (profileTests)
297	>	runTestProfiled();
298	>	else
299	>	super.runTest();
300		}
301		}
302
303		protected void runTestProfiled() throws Throwable {
304	<	// Warmup run, notably to trigger all needed classloading.
305	<	super.runTest();
188	<	long t0 = System.nanoTime();
189	<	try {
304	>	for (int i = 0; i < 2; i++) {
305	>	long startTime = System.nanoTime();
306		super.runTest();
307	<	} finally {
308	<	long elapsedMillis = millisElapsedSince(t0);
309	<	if (elapsedMillis >= profileThreshold)
307	>	long elapsedMillis = millisElapsedSince(startTime);
308	>	if (elapsedMillis < profileThreshold)
309	>	break;
310	>	// Never report first run of any test; treat it as a
311	>	// warmup run, notably to trigger all needed classloading,
312	>	if (i > 0)
313		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
314		}
315		}
316
317		/**
318		* Runs all JSR166 unit tests using junit.textui.TestRunner.
200	–	* Optional command line arg provides the number of iterations to
201	–	* repeat running the tests.
319		*/
320		public static void main(String[] args) {
321	+	main(suite(), args);
322	+	}
323	+
324	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
325	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
326	+	long runTime;
327	+	public void startTest(Test test) {}
328	+	protected void printHeader(long runTime) {
329	+	this.runTime = runTime; // defer printing for later
330	+	}
331	+	protected void printFooter(TestResult result) {
332	+	if (result.wasSuccessful()) {
333	+	getWriter().println("OK (" + result.runCount() + " tests)"
334	+	+ "  Time: " + elapsedTimeAsString(runTime));
335	+	} else {
336	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
337	+	super.printFooter(result);
338	+	}
339	+	}
340	+	}
341	+
342	+	/**
343	+	* Returns a TestRunner that doesn't bother with unnecessary
344	+	* fluff, like printing a "." for each test case.
345	+	*/
346	+	static junit.textui.TestRunner newPithyTestRunner() {
347	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
348	+	runner.setPrinter(new PithyResultPrinter(System.out));
349	+	return runner;
350	+	}
351	+
352	+	/**
353	+	* Runs all unit tests in the given test suite.
354	+	* Actual behavior influenced by jsr166.* system properties.
355	+	*/
356	+	static void main(Test suite, String[] args) {
357		if (useSecurityManager) {
358		System.err.println("Setting a permissive security manager");
359		Policy.setPolicy(permissivePolicy());
360		System.setSecurityManager(new SecurityManager());
361		}
362	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
363	<
364	<	Test s = suite();
365	<	for (int i = 0; i < iters; ++i) {
213	<	junit.textui.TestRunner.run(s);
362	>	for (int i = 0; i < suiteRuns; i++) {
363	>	TestResult result = newPithyTestRunner().doRun(suite);
364	>	if (!result.wasSuccessful())
365	>	System.exit(1);
366		System.gc();
367		System.runFinalization();
368		}
217	–	System.exit(0);
369		}
370
371		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 265 | Line 416 | public class JSR166TestCase extends Test
416		public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
417		public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
418		public static boolean atLeastJava9() {
419	<	// As of 2014-05, java9 still uses 52.0 class file version
420	<	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
419	>	return JAVA_CLASS_VERSION >= 53.0
420	>	// As of 2015-09, java9 still uses 52.0 class file version
421	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
422	>	}
423	>	public static boolean atLeastJava10() {
424	>	return JAVA_CLASS_VERSION >= 54.0
425	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
426		}
427
428		/**
#	Line 355 | Line 511 | public class JSR166TestCase extends Test
511		"LongAdderTest",
512		"SplittableRandomTest",
513		"StampedLockTest",
514	+	"SubmissionPublisherTest",
515		"ThreadLocalRandom8Test",
516	+	"TimeUnit8Test",
517		};
518		addNamedTestClasses(suite, java8TestClassNames);
519		}
#	Line 363 | Line 521 | public class JSR166TestCase extends Test
521		// Java9+ test classes
522		if (atLeastJava9()) {
523		String[] java9TestClassNames = {
524	<	"ThreadPoolExecutor9Test",
524	>	"AtomicBoolean9Test",
525	>	"AtomicInteger9Test",
526	>	"AtomicIntegerArray9Test",
527	>	"AtomicLong9Test",
528	>	"AtomicLongArray9Test",
529	>	"AtomicReference9Test",
530	>	"AtomicReferenceArray9Test",
531	>	"ExecutorCompletionService9Test",
532		};
533		addNamedTestClasses(suite, java9TestClassNames);
534		}
#	Line 371 | Line 536 | public class JSR166TestCase extends Test
536		return suite;
537		}
538
539	+	/** Returns list of junit-style test method names in given class. */
540	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
541	+	Method[] methods = testClass.getDeclaredMethods();
542	+	ArrayList<String> names = new ArrayList<String>(methods.length);
543	+	for (Method method : methods) {
544	+	if (method.getName().startsWith("test")
545	+	&& Modifier.isPublic(method.getModifiers())
546	+	// method.getParameterCount() requires jdk8+
547	+	&& method.getParameterTypes().length == 0) {
548	+	names.add(method.getName());
549	+	}
550	+	}
551	+	return names;
552	+	}
553	+
554	+	/**
555	+	* Returns junit-style testSuite for the given test class, but
556	+	* parameterized by passing extra data to each test.
557	+	*/
558	+	public static <ExtraData> Test parameterizedTestSuite
559	+	(Class<? extends JSR166TestCase> testClass,
560	+	Class<ExtraData> dataClass,
561	+	ExtraData data) {
562	+	try {
563	+	TestSuite suite = new TestSuite();
564	+	Constructor c =
565	+	testClass.getDeclaredConstructor(dataClass, String.class);
566	+	for (String methodName : testMethodNames(testClass))
567	+	suite.addTest((Test) c.newInstance(data, methodName));
568	+	return suite;
569	+	} catch (Exception e) {
570	+	throw new Error(e);
571	+	}
572	+	}
573	+
574	+	/**
575	+	* Returns junit-style testSuite for the jdk8 extension of the
576	+	* given test class, but parameterized by passing extra data to
577	+	* each test.  Uses reflection to allow compilation in jdk7.
578	+	*/
579	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
580	+	(Class<? extends JSR166TestCase> testClass,
581	+	Class<ExtraData> dataClass,
582	+	ExtraData data) {
583	+	if (atLeastJava8()) {
584	+	String name = testClass.getName();
585	+	String name8 = name.replaceAll("Test$", "8Test");
586	+	if (name.equals(name8)) throw new Error(name);
587	+	try {
588	+	return (Test)
589	+	Class.forName(name8)
590	+	.getMethod("testSuite", new Class[] { dataClass })
591	+	.invoke(null, data);
592	+	} catch (Exception e) {
593	+	throw new Error(e);
594	+	}
595	+	} else {
596	+	return new TestSuite();
597	+	}
598	+	}
599	+
600		// Delays for timing-dependent tests, in milliseconds.
601
602		public static long SHORT_DELAY_MS;
#	Line 379 | Line 605 | public class JSR166TestCase extends Test
605		public static long LONG_DELAY_MS;
606
607		/**
608	<	* Returns the shortest timed delay. This could
609	<	* be reimplemented to use for example a Property.
608	>	* Returns the shortest timed delay. This can be scaled up for
609	>	* slow machines using the jsr166.delay.factor system property,
610	>	* or via jtreg's -timeoutFactor: flag.
611	>	* http://openjdk.java.net/jtreg/command-help.html
612		*/
613		protected long getShortDelay() {
614	<	return 50;
614	>	return (long) (50 * delayFactor);
615		}
616
617		/**
#	Line 405 | Line 633 | public class JSR166TestCase extends Test
633		}
634
635		/**
636	<	* Returns a new Date instance representing a time delayMillis
637	<	* milliseconds in the future.
636	>	* Returns a new Date instance representing a time at least
637	>	* delayMillis milliseconds in the future.
638		*/
639		Date delayedDate(long delayMillis) {
640	<	return new Date(System.currentTimeMillis() + delayMillis);
640	>	// Add 1 because currentTimeMillis is known to round into the past.
641	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
642		}
643
644		/**
#	Line 425 | Line 654 | public class JSR166TestCase extends Test
654		* the same test have no effect.
655		*/
656		public void threadRecordFailure(Throwable t) {
657	+	System.err.println(t);
658	+	dumpTestThreads();
659		threadFailure.compareAndSet(null, t);
660		}
661
#	Line 432 | Line 663 | public class JSR166TestCase extends Test
663		setDelays();
664		}
665
666	+	void tearDownFail(String format, Object... args) {
667	+	String msg = toString() + ": " + String.format(format, args);
668	+	System.err.println(msg);
669	+	dumpTestThreads();
670	+	throw new AssertionFailedError(msg);
671	+	}
672	+
673		/**
674		* Extra checks that get done for all test cases.
675		*
#	Line 459 | Line 697 | public class JSR166TestCase extends Test
697		}
698
699		if (Thread.interrupted())
700	<	throw new AssertionFailedError("interrupt status set in main thread");
700	>	tearDownFail("interrupt status set in main thread");
701
702		checkForkJoinPoolThreadLeaks();
703		}
704
705		/**
706	<	* Finds missing try { ... } finally { joinPool(e); }
706	>	* Finds missing PoolCleaners
707		*/
708		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
709	<	Thread[] survivors = new Thread[5];
709	>	Thread[] survivors = new Thread[7];
710		int count = Thread.enumerate(survivors);
711		for (int i = 0; i < count; i++) {
712		Thread thread = survivors[i];
#	Line 476 | Line 714 | public class JSR166TestCase extends Test
714		if (name.startsWith("ForkJoinPool-")) {
715		// give thread some time to terminate
716		thread.join(LONG_DELAY_MS);
717	<	if (!thread.isAlive()) continue;
718	<	thread.stop();
719	<	throw new AssertionFailedError
482	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
483	<	toString(), name));
717	>	if (thread.isAlive())
718	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
719	>	thread);
720		}
721		}
722	+
723	+	if (!ForkJoinPool.commonPool()
724	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
725	+	tearDownFail("ForkJoin common pool thread stuck");
726		}
727
728		/**
#	Line 495 | Line 735 | public class JSR166TestCase extends Test
735		fail(reason);
736		} catch (AssertionFailedError t) {
737		threadRecordFailure(t);
738	<	fail(reason);
738	>	throw t;
739		}
740		}
741
#	Line 563 | Line 803 | public class JSR166TestCase extends Test
803		public void threadAssertEquals(Object x, Object y) {
804		try {
805		assertEquals(x, y);
806	<	} catch (AssertionFailedError t) {
807	<	threadRecordFailure(t);
808	<	throw t;
809	<	} catch (Throwable t) {
810	<	threadUnexpectedException(t);
806	>	} catch (AssertionFailedError fail) {
807	>	threadRecordFailure(fail);
808	>	throw fail;
809	>	} catch (Throwable fail) {
810	>	threadUnexpectedException(fail);
811		}
812		}
813
#	Line 579 | Line 819 | public class JSR166TestCase extends Test
819		public void threadAssertSame(Object x, Object y) {
820		try {
821		assertSame(x, y);
822	<	} catch (AssertionFailedError t) {
823	<	threadRecordFailure(t);
824	<	throw t;
822	>	} catch (AssertionFailedError fail) {
823	>	threadRecordFailure(fail);
824	>	throw fail;
825		}
826		}
827
#	Line 622 | Line 862 | public class JSR166TestCase extends Test
862		/**
863		* Delays, via Thread.sleep, for the given millisecond delay, but
864		* if the sleep is shorter than specified, may re-sleep or yield
865	<	* until time elapses.
865	>	* until time elapses.  Ensures that the given time, as measured
866	>	* by System.nanoTime(), has elapsed.
867		*/
868		static void delay(long millis) throws InterruptedException {
869	<	long startTime = System.nanoTime();
870	<	long ns = millis * 1000 * 1000;
871	<	for (;;) {
869	>	long nanos = millis * (1000 * 1000);
870	>	final long wakeupTime = System.nanoTime() + nanos;
871	>	do {
872		if (millis > 0L)
873		Thread.sleep(millis);
874		else // too short to sleep
875		Thread.yield();
876	<	long d = ns - (System.nanoTime() - startTime);
877	<	if (d > 0L)
878	<	millis = d / (1000 * 1000);
879	<	else
880	<	break;
876	>	nanos = wakeupTime - System.nanoTime();
877	>	millis = nanos / (1000 * 1000);
878	>	} while (nanos >= 0L);
879	>	}
880	>
881	>	/**
882	>	* Allows use of try-with-resources with per-test thread pools.
883	>	*/
884	>	class PoolCleaner implements AutoCloseable {
885	>	private final ExecutorService pool;
886	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
887	>	public void close() { joinPool(pool); }
888	>	}
889	>
890	>	/**
891	>	* An extension of PoolCleaner that has an action to release the pool.
892	>	*/
893	>	class PoolCleanerWithReleaser extends PoolCleaner {
894	>	private final Runnable releaser;
895	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
896	>	super(pool);
897	>	this.releaser = releaser;
898		}
899	+	public void close() {
900	+	try {
901	+	releaser.run();
902	+	} finally {
903	+	super.close();
904	+	}
905	+	}
906	+	}
907	+
908	+	PoolCleaner cleaner(ExecutorService pool) {
909	+	return new PoolCleaner(pool);
910	+	}
911	+
912	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
913	+	return new PoolCleanerWithReleaser(pool, releaser);
914	+	}
915	+
916	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
917	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
918	+	}
919	+
920	+	Runnable releaser(final CountDownLatch latch) {
921	+	return new Runnable() { public void run() {
922	+	do { latch.countDown(); }
923	+	while (latch.getCount() > 0);
924	+	}};
925	+	}
926	+
927	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
928	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
929	+	}
930	+
931	+	Runnable releaser(final AtomicBoolean flag) {
932	+	return new Runnable() { public void run() { flag.set(true); }};
933		}
934
935		/**
936		* Waits out termination of a thread pool or fails doing so.
937		*/
938	<	void joinPool(ExecutorService exec) {
938	>	void joinPool(ExecutorService pool) {
939		try {
940	<	exec.shutdown();
941	<	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
942	<	fail("ExecutorService " + exec +
943	<	" did not terminate in a timely manner");
940	>	pool.shutdown();
941	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
942	>	try {
943	>	threadFail("ExecutorService " + pool +
944	>	" did not terminate in a timely manner");
945	>	} finally {
946	>	// last resort, for the benefit of subsequent tests
947	>	pool.shutdownNow();
948	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
949	>	}
950	>	}
951		} catch (SecurityException ok) {
952		// Allowed in case test doesn't have privs
953	<	} catch (InterruptedException ie) {
954	<	fail("Unexpected InterruptedException");
953	>	} catch (InterruptedException fail) {
954	>	threadFail("Unexpected InterruptedException");
955	>	}
956	>	}
957	>
958	>	/**
959	>	* Like Runnable, but with the freedom to throw anything.
960	>	* junit folks had the same idea:
961	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
962	>	*/
963	>	interface Action { public void run() throws Throwable; }
964	>
965	>	/**
966	>	* Runs all the given actions in parallel, failing if any fail.
967	>	* Useful for running multiple variants of tests that are
968	>	* necessarily individually slow because they must block.
969	>	*/
970	>	void testInParallel(Action ... actions) {
971	>	ExecutorService pool = Executors.newCachedThreadPool();
972	>	try (PoolCleaner cleaner = cleaner(pool)) {
973	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
974	>	for (final Action action : actions)
975	>	futures.add(pool.submit(new CheckedRunnable() {
976	>	public void realRun() throws Throwable { action.run();}}));
977	>	for (Future<?> future : futures)
978	>	try {
979	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
980	>	} catch (ExecutionException ex) {
981	>	threadUnexpectedException(ex.getCause());
982	>	} catch (Exception ex) {
983	>	threadUnexpectedException(ex);
984	>	}
985		}
986		}
987
988		/**
989	<	* A debugging tool to print all stack traces, as jstack does.
989	>	* A debugging tool to print stack traces of most threads, as jstack does.
990	>	* Uninteresting threads are filtered out.
991		*/
992	<	static void printAllStackTraces() {
993	<	for (ThreadInfo info :
994	<	ManagementFactory.getThreadMXBean()
995	<	.dumpAllThreads(true, true))
992	>	static void dumpTestThreads() {
993	>	SecurityManager sm = System.getSecurityManager();
994	>	if (sm != null) {
995	>	try {
996	>	System.setSecurityManager(null);
997	>	} catch (SecurityException giveUp) {
998	>	return;
999	>	}
1000	>	}
1001	>
1002	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1003	>	System.err.println("------ stacktrace dump start ------");
1004	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1005	>	String name = info.getThreadName();
1006	>	if ("Signal Dispatcher".equals(name))
1007	>	continue;
1008	>	if ("Reference Handler".equals(name)
1009	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
1010	>	continue;
1011	>	if ("Finalizer".equals(name)
1012	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
1013	>	continue;
1014	>	if ("checkForWedgedTest".equals(name))
1015	>	continue;
1016		System.err.print(info);
1017	+	}
1018	+	System.err.println("------ stacktrace dump end ------");
1019	+
1020	+	if (sm != null) System.setSecurityManager(sm);
1021		}
1022
1023		/**
#	Line 682 | Line 1036 | public class JSR166TestCase extends Test
1036		// No need to optimize the failing case via Thread.join.
1037		delay(millis);
1038		assertTrue(thread.isAlive());
1039	<	} catch (InterruptedException ie) {
1040	<	fail("Unexpected InterruptedException");
1039	>	} catch (InterruptedException fail) {
1040	>	threadFail("Unexpected InterruptedException");
1041		}
1042		}
1043
#	Line 704 | Line 1058 | public class JSR166TestCase extends Test
1058		delay(millis);
1059		for (Thread thread : threads)
1060		assertTrue(thread.isAlive());
1061	<	} catch (InterruptedException ie) {
1062	<	fail("Unexpected InterruptedException");
1061	>	} catch (InterruptedException fail) {
1062	>	threadFail("Unexpected InterruptedException");
1063		}
1064		}
1065
#	Line 726 | Line 1080 | public class JSR166TestCase extends Test
1080		future.get(timeoutMillis, MILLISECONDS);
1081		shouldThrow();
1082		} catch (TimeoutException success) {
1083	<	} catch (Exception e) {
1084	<	threadUnexpectedException(e);
1083	>	} catch (Exception fail) {
1084	>	threadUnexpectedException(fail);
1085		} finally { future.cancel(true); }
1086		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1087		}
#	Line 883 | Line 1237 | public class JSR166TestCase extends Test
1237		void sleep(long millis) {
1238		try {
1239		delay(millis);
1240	<	} catch (InterruptedException ie) {
1240	>	} catch (InterruptedException fail) {
1241		AssertionFailedError afe =
1242		new AssertionFailedError("Unexpected InterruptedException");
1243	<	afe.initCause(ie);
1243	>	afe.initCause(fail);
1244		throw afe;
1245		}
1246		}
#	Line 978 | Line 1332 | public class JSR166TestCase extends Test
1332		void awaitTermination(Thread t, long timeoutMillis) {
1333		try {
1334		t.join(timeoutMillis);
1335	<	} catch (InterruptedException ie) {
1336	<	threadUnexpectedException(ie);
1335	>	} catch (InterruptedException fail) {
1336	>	threadUnexpectedException(fail);
1337		} finally {
1338		if (t.getState() != Thread.State.TERMINATED) {
1339		t.interrupt();
1340	<	fail("Test timed out");
1340	>	threadFail("timed out waiting for thread to terminate");
1341		}
1342		}
1343		}
#	Line 1005 | Line 1359 | public class JSR166TestCase extends Test
1359		public final void run() {
1360		try {
1361		realRun();
1362	<	} catch (Throwable t) {
1363	<	threadUnexpectedException(t);
1362	>	} catch (Throwable fail) {
1363	>	threadUnexpectedException(fail);
1364		}
1365		}
1366		}
#	Line 1060 | Line 1414 | public class JSR166TestCase extends Test
1414		threadShouldThrow("InterruptedException");
1415		} catch (InterruptedException success) {
1416		threadAssertFalse(Thread.interrupted());
1417	<	} catch (Throwable t) {
1418	<	threadUnexpectedException(t);
1417	>	} catch (Throwable fail) {
1418	>	threadUnexpectedException(fail);
1419		}
1420		}
1421		}
#	Line 1072 | Line 1426 | public class JSR166TestCase extends Test
1426		public final T call() {
1427		try {
1428		return realCall();
1429	<	} catch (Throwable t) {
1430	<	threadUnexpectedException(t);
1429	>	} catch (Throwable fail) {
1430	>	threadUnexpectedException(fail);
1431		return null;
1432		}
1433		}
#	Line 1090 | Line 1444 | public class JSR166TestCase extends Test
1444		return result;
1445		} catch (InterruptedException success) {
1446		threadAssertFalse(Thread.interrupted());
1447	<	} catch (Throwable t) {
1448	<	threadUnexpectedException(t);
1447	>	} catch (Throwable fail) {
1448	>	threadUnexpectedException(fail);
1449		}
1450		return null;
1451		}
#	Line 1108 | Line 1462 | public class JSR166TestCase extends Test
1462		public static final String TEST_STRING = "a test string";
1463
1464		public static class StringTask implements Callable<String> {
1465	<	public String call() { return TEST_STRING; }
1465	>	final String value;
1466	>	public StringTask() { this(TEST_STRING); }
1467	>	public StringTask(String value) { this.value = value; }
1468	>	public String call() { return value; }
1469		}
1470
1471		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1121 | Line 1478 | public class JSR166TestCase extends Test
1478		}};
1479		}
1480
1481	<	public Runnable awaiter(final CountDownLatch latch) {
1481	>	public Runnable countDowner(final CountDownLatch latch) {
1482		return new CheckedRunnable() {
1483		public void realRun() throws InterruptedException {
1484	<	await(latch);
1484	>	latch.countDown();
1485		}};
1486		}
1487
1488	<	public void await(CountDownLatch latch) {
1489	<	try {
1490	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1491	<	} catch (Throwable t) {
1492	<	threadUnexpectedException(t);
1488	>	class LatchAwaiter extends CheckedRunnable {
1489	>	static final int NEW = 0;
1490	>	static final int RUNNING = 1;
1491	>	static final int DONE = 2;
1492	>	final CountDownLatch latch;
1493	>	int state = NEW;
1494	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1495	>	public void realRun() throws InterruptedException {
1496	>	state = 1;
1497	>	await(latch);
1498	>	state = 2;
1499		}
1500		}
1501
1502	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1503	+	return new LatchAwaiter(latch);
1504	+	}
1505	+
1506	+	public void await(CountDownLatch latch, long timeoutMillis) {
1507	+	try {
1508	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1509	+	fail("timed out waiting for CountDownLatch for "
1510	+	+ (timeoutMillis/1000) + " sec");
1511	+	} catch (Throwable fail) {
1512	+	threadUnexpectedException(fail);
1513	+	}
1514	+	}
1515	+
1516	+	public void await(CountDownLatch latch) {
1517	+	await(latch, LONG_DELAY_MS);
1518	+	}
1519	+
1520		public void await(Semaphore semaphore) {
1521		try {
1522	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1523	<	} catch (Throwable t) {
1524	<	threadUnexpectedException(t);
1522	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1523	>	fail("timed out waiting for Semaphore for "
1524	>	+ (LONG_DELAY_MS/1000) + " sec");
1525	>	} catch (Throwable fail) {
1526	>	threadUnexpectedException(fail);
1527		}
1528		}
1529
#	Line 1334 | Line 1717 | public class JSR166TestCase extends Test
1717		@Override protected final void compute() {
1718		try {
1719		realCompute();
1720	<	} catch (Throwable t) {
1721	<	threadUnexpectedException(t);
1720	>	} catch (Throwable fail) {
1721	>	threadUnexpectedException(fail);
1722		}
1723		}
1724		}
#	Line 1349 | Line 1732 | public class JSR166TestCase extends Test
1732		@Override protected final T compute() {
1733		try {
1734		return realCompute();
1735	<	} catch (Throwable t) {
1736	<	threadUnexpectedException(t);
1735	>	} catch (Throwable fail) {
1736	>	threadUnexpectedException(fail);
1737		return null;
1738		}
1739		}
#	Line 1374 | Line 1757 | public class JSR166TestCase extends Test
1757		public int await() {
1758		try {
1759		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1760	<	} catch (TimeoutException e) {
1760	>	} catch (TimeoutException timedOut) {
1761		throw new AssertionFailedError("timed out");
1762	<	} catch (Exception e) {
1762	>	} catch (Exception fail) {
1763		AssertionFailedError afe =
1764	<	new AssertionFailedError("Unexpected exception: " + e);
1765	<	afe.initCause(e);
1764	>	new AssertionFailedError("Unexpected exception: " + fail);
1765	>	afe.initCause(fail);
1766		throw afe;
1767		}
1768		}
#	Line 1407 | Line 1790 | public class JSR166TestCase extends Test
1790		q.remove();
1791		shouldThrow();
1792		} catch (NoSuchElementException success) {}
1793	<	} catch (InterruptedException ie) {
1411	<	threadUnexpectedException(ie);
1412	<	}
1793	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1794		}
1795
1796		void assertSerialEquals(Object x, Object y) {
#	Line 1428 | Line 1809 | public class JSR166TestCase extends Test
1809		oos.flush();
1810		oos.close();
1811		return bos.toByteArray();
1812	<	} catch (Throwable t) {
1813	<	threadUnexpectedException(t);
1812	>	} catch (Throwable fail) {
1813	>	threadUnexpectedException(fail);
1814		return new byte[0];
1815		}
1816		}
#	Line 1442 | Line 1823 | public class JSR166TestCase extends Test
1823		T clone = (T) ois.readObject();
1824		assertSame(o.getClass(), clone.getClass());
1825		return clone;
1826	<	} catch (Throwable t) {
1827	<	threadUnexpectedException(t);
1826	>	} catch (Throwable fail) {
1827	>	threadUnexpectedException(fail);
1828		return null;
1829		}
1830		}
#	Line 1468 | Line 1849 | public class JSR166TestCase extends Test
1849		shouldThrow(expectedExceptionClass.getName());
1850		}
1851		}
1852	+
1853	+	public void assertIteratorExhausted(Iterator<?> it) {
1854	+	try {
1855	+	it.next();
1856	+	shouldThrow();
1857	+	} catch (NoSuchElementException success) {}
1858	+	assertFalse(it.hasNext());
1859	+	}
1860	+
1861	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1862	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1863	+	}
1864	+
1865	+	public Runnable runnableThrowing(final RuntimeException ex) {
1866	+	return new Runnable() { public void run() { throw ex; }};
1867	+	}
1868	+
1869	+	/** A reusable thread pool to be shared by tests. */
1870	+	static final ExecutorService cachedThreadPool =
1871	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1872	+	1000L, MILLISECONDS,
1873	+	new SynchronousQueue<Runnable>());
1874	+
1875		}

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