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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.151 by jsr166, Sat Oct 3 19:19:01 2015 UTC vs.
Revision 1.194 by jsr166, Mon May 23 18:42:17 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 19 | Line 29 | 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 47 | Line 59 | import java.util.concurrent.RecursiveAct
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;
#	Line 108 | Line 123 | import junit.framework.TestSuite;
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
112	<	* isolation.
126	>	* cover multiple methods when they cannot be tested in isolation.
127		*
128		* <li>The documentation style for testcases is to provide as javadoc
129		* a simple sentence or two describing the property that the testcase
#	Line 172 | Line 186 | public class JSR166TestCase extends Test
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
#	Line 187 | Line 239 | public class JSR166TestCase extends Test
239		return (regex == null) ? null : Pattern.compile(regex);
240		}
241
242	+	// Instrumentation to debug very rare, but very annoying hung test runs.
243	+	static volatile TestCase currentTestCase;
244	+	// static volatile int currentRun = 0;
245	+	static {
246	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
247	+	// Avoid spurious reports with enormous runsPerTest.
248	+	// A single test case run should never take more than 1 second.
249	+	// But let's cap it at the high end too ...
250	+	final int timeoutMinutes =
251	+	Math.min(15, Math.max(runsPerTest / 60, 1));
252	+	for (TestCase lastTestCase = currentTestCase;;) {
253	+	try { MINUTES.sleep(timeoutMinutes); }
254	+	catch (InterruptedException unexpected) { break; }
255	+	if (lastTestCase == currentTestCase) {
256	+	System.err.printf(
257	+	"Looks like we're stuck running test: %s%n",
258	+	lastTestCase);
259	+	//                     System.err.printf(
260	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
261	+	//                         lastTestCase, currentRun, runsPerTest);
262	+	//                     System.err.println("availableProcessors=" +
263	+	//                         Runtime.getRuntime().availableProcessors());
264	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
265	+	dumpTestThreads();
266	+	// one stack dump is probably enough; more would be spam
267	+	break;
268	+	}
269	+	lastTestCase = currentTestCase;
270	+	}}};
271	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
272	+	thread.setDaemon(true);
273	+	thread.start();
274	+	}
275	+
276	+	//     public static String cpuModel() {
277	+	//         try {
278	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
279	+	//                 .matcher(new String(
280	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
281	+	//             matcher.find();
282	+	//             return matcher.group(1);
283	+	//         } catch (Exception ex) { return null; }
284	+	//     }
285	+
286		public void runBare() throws Throwable {
287	+	currentTestCase = this;
288		if (methodFilter == null
289		|| methodFilter.matcher(toString()).find())
290		super.runBare();
#	Line 195 | Line 292 | public class JSR166TestCase extends Test
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
#	Line 223 | Line 321 | public class JSR166TestCase extends Test
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.
#	Line 234 | Line 360 | public class JSR166TestCase extends Test
360		System.setSecurityManager(new SecurityManager());
361		}
362		for (int i = 0; i < suiteRuns; i++) {
363	<	TestResult result = junit.textui.TestRunner.run(suite);
363	>	TestResult result = newPithyTestRunner().doRun(suite);
364		if (!result.wasSuccessful())
365		System.exit(1);
366		System.gc();
#	Line 387 | Line 513 | public class JSR166TestCase extends Test
513		"StampedLockTest",
514		"SubmissionPublisherTest",
515		"ThreadLocalRandom8Test",
516	+	"TimeUnit8Test",
517		};
518		addNamedTestClasses(suite, java8TestClassNames);
519		}
#	Line 394 | Line 521 | public class JSR166TestCase extends Test
521		// Java9+ test classes
522		if (atLeastJava9()) {
523		String[] java9TestClassNames = {
524	<	// Currently empty, but expecting varhandle tests
524	>	"ExecutorCompletionService9Test",
525		};
526		addNamedTestClasses(suite, java9TestClassNames);
527		}
#	Line 461 | Line 588 | public class JSR166TestCase extends Test
588		} else {
589		return new TestSuite();
590		}
464	–
591		}
592
593		// Delays for timing-dependent tests, in milliseconds.
#	Line 472 | Line 598 | public class JSR166TestCase extends Test
598		public static long LONG_DELAY_MS;
599
600		/**
601	<	* Returns the shortest timed delay. This could
602	<	* be reimplemented to use for example a Property.
601	>	* Returns the shortest timed delay. This can be scaled up for
602	>	* slow machines using the jsr166.delay.factor system property,
603	>	* or via jtreg's -timeoutFactor: flag.
604	>	* http://openjdk.java.net/jtreg/command-help.html
605		*/
606		protected long getShortDelay() {
607	<	return 50;
607	>	return (long) (50 * delayFactor);
608		}
609
610		/**
#	Line 519 | Line 647 | public class JSR166TestCase extends Test
647		* the same test have no effect.
648		*/
649		public void threadRecordFailure(Throwable t) {
650	+	System.err.println(t);
651	+	dumpTestThreads();
652		threadFailure.compareAndSet(null, t);
653		}
654
#	Line 529 | Line 659 | public class JSR166TestCase extends Test
659		void tearDownFail(String format, Object... args) {
660		String msg = toString() + ": " + String.format(format, args);
661		System.err.println(msg);
662	<	printAllStackTraces();
662	>	dumpTestThreads();
663		throw new AssertionFailedError(msg);
664		}
665
#	Line 566 | Line 696 | public class JSR166TestCase extends Test
696		}
697
698		/**
699	<	* Finds missing try { ... } finally { joinPool(e); }
699	>	* Finds missing PoolCleaners
700		*/
701		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
702		Thread[] survivors = new Thread[7];
#	Line 598 | Line 728 | public class JSR166TestCase extends Test
728		fail(reason);
729		} catch (AssertionFailedError t) {
730		threadRecordFailure(t);
731	<	fail(reason);
731	>	throw t;
732		}
733		}
734
#	Line 725 | Line 855 | public class JSR166TestCase extends Test
855		/**
856		* Delays, via Thread.sleep, for the given millisecond delay, but
857		* if the sleep is shorter than specified, may re-sleep or yield
858	<	* until time elapses.
858	>	* until time elapses.  Ensures that the given time, as measured
859	>	* by System.nanoTime(), has elapsed.
860		*/
861		static void delay(long millis) throws InterruptedException {
862	<	long startTime = System.nanoTime();
863	<	long ns = millis * 1000 * 1000;
864	<	for (;;) {
862	>	long nanos = millis * (1000 * 1000);
863	>	final long wakeupTime = System.nanoTime() + nanos;
864	>	do {
865		if (millis > 0L)
866		Thread.sleep(millis);
867		else // too short to sleep
868		Thread.yield();
869	<	long d = ns - (System.nanoTime() - startTime);
870	<	if (d > 0L)
871	<	millis = d / (1000 * 1000);
741	<	else
742	<	break;
743	<	}
869	>	nanos = wakeupTime - System.nanoTime();
870	>	millis = nanos / (1000 * 1000);
871	>	} while (nanos >= 0L);
872		}
873
874		/**
875		* Allows use of try-with-resources with per-test thread pools.
876		*/
877	<	static class PoolCloser<T extends ExecutorService>
878	<	implements AutoCloseable {
879	<	public final T pool;
752	<	public PoolCloser(T pool) { this.pool = pool; }
877	>	class PoolCleaner implements AutoCloseable {
878	>	private final ExecutorService pool;
879	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
880		public void close() { joinPool(pool); }
881		}
882
883		/**
884	+	* An extension of PoolCleaner that has an action to release the pool.
885	+	*/
886	+	class PoolCleanerWithReleaser extends PoolCleaner {
887	+	private final Runnable releaser;
888	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
889	+	super(pool);
890	+	this.releaser = releaser;
891	+	}
892	+	public void close() {
893	+	try {
894	+	releaser.run();
895	+	} finally {
896	+	super.close();
897	+	}
898	+	}
899	+	}
900	+
901	+	PoolCleaner cleaner(ExecutorService pool) {
902	+	return new PoolCleaner(pool);
903	+	}
904	+
905	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
906	+	return new PoolCleanerWithReleaser(pool, releaser);
907	+	}
908	+
909	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
910	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
911	+	}
912	+
913	+	Runnable releaser(final CountDownLatch latch) {
914	+	return new Runnable() { public void run() {
915	+	do { latch.countDown(); }
916	+	while (latch.getCount() > 0);
917	+	}};
918	+	}
919	+
920	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
921	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
922	+	}
923	+
924	+	Runnable releaser(final AtomicBoolean flag) {
925	+	return new Runnable() { public void run() { flag.set(true); }};
926	+	}
927	+
928	+	/**
929		* Waits out termination of a thread pool or fails doing so.
930		*/
931	<	static void joinPool(ExecutorService pool) {
931	>	void joinPool(ExecutorService pool) {
932		try {
933		pool.shutdown();
934	<	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
935	<	fail("ExecutorService " + pool +
936	<	" did not terminate in a timely manner");
934	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
935	>	try {
936	>	threadFail("ExecutorService " + pool +
937	>	" did not terminate in a timely manner");
938	>	} finally {
939	>	// last resort, for the benefit of subsequent tests
940	>	pool.shutdownNow();
941	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
942	>	}
943	>	}
944		} catch (SecurityException ok) {
945		// Allowed in case test doesn't have privs
946		} catch (InterruptedException fail) {
947	<	fail("Unexpected InterruptedException");
947	>	threadFail("Unexpected InterruptedException");
948		}
949		}
950
#	Line 778 | Line 957 | public class JSR166TestCase extends Test
957		* necessarily individually slow because they must block.
958		*/
959		void testInParallel(Action ... actions) {
960	<	try (PoolCloser<ExecutorService> poolCloser
961	<	= new PoolCloser<>(Executors.newCachedThreadPool())) {
783	<	ExecutorService pool = poolCloser.pool;
960	>	ExecutorService pool = Executors.newCachedThreadPool();
961	>	try (PoolCleaner cleaner = cleaner(pool)) {
962		ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
963		for (final Action action : actions)
964		futures.add(pool.submit(new CheckedRunnable() {
#	Line 797 | Line 975 | public class JSR166TestCase extends Test
975		}
976
977		/**
978	<	* A debugging tool to print all stack traces, as jstack does.
978	>	* A debugging tool to print stack traces of most threads, as jstack does.
979		* Uninteresting threads are filtered out.
980		*/
981	<	static void printAllStackTraces() {
981	>	static void dumpTestThreads() {
982		ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
983		System.err.println("------ stacktrace dump start ------");
984		for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
#	Line 813 | Line 991 | public class JSR166TestCase extends Test
991		if ("Finalizer".equals(name)
992		&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
993		continue;
994	+	if ("checkForWedgedTest".equals(name))
995	+	continue;
996		System.err.print(info);
997		}
998		System.err.println("------ stacktrace dump end ------");
#	Line 835 | Line 1015 | public class JSR166TestCase extends Test
1015		delay(millis);
1016		assertTrue(thread.isAlive());
1017		} catch (InterruptedException fail) {
1018	<	fail("Unexpected InterruptedException");
1018	>	threadFail("Unexpected InterruptedException");
1019		}
1020		}
1021
#	Line 857 | Line 1037 | public class JSR166TestCase extends Test
1037		for (Thread thread : threads)
1038		assertTrue(thread.isAlive());
1039		} catch (InterruptedException fail) {
1040	<	fail("Unexpected InterruptedException");
1040	>	threadFail("Unexpected InterruptedException");
1041		}
1042		}
1043
#	Line 1135 | Line 1315 | public class JSR166TestCase extends Test
1315		} finally {
1316		if (t.getState() != Thread.State.TERMINATED) {
1317		t.interrupt();
1318	<	fail("Test timed out");
1318	>	threadFail("timed out waiting for thread to terminate");
1319		}
1320		}
1321		}
#	Line 1283 | Line 1463 | public class JSR166TestCase extends Test
1463		}};
1464		}
1465
1466	<	public Runnable awaiter(final CountDownLatch latch) {
1467	<	return new CheckedRunnable() {
1468	<	public void realRun() throws InterruptedException {
1469	<	await(latch);
1470	<	}};
1466	>	class LatchAwaiter extends CheckedRunnable {
1467	>	static final int NEW = 0;
1468	>	static final int RUNNING = 1;
1469	>	static final int DONE = 2;
1470	>	final CountDownLatch latch;
1471	>	int state = NEW;
1472	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1473	>	public void realRun() throws InterruptedException {
1474	>	state = 1;
1475	>	await(latch);
1476	>	state = 2;
1477	>	}
1478		}
1479
1480	<	public void await(CountDownLatch latch) {
1480	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1481	>	return new LatchAwaiter(latch);
1482	>	}
1483	>
1484	>	public void await(CountDownLatch latch, long timeoutMillis) {
1485		try {
1486	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1486	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1487	>	fail("timed out waiting for CountDownLatch for "
1488	>	+ (timeoutMillis/1000) + " sec");
1489		} catch (Throwable fail) {
1490		threadUnexpectedException(fail);
1491		}
1492		}
1493
1494	+	public void await(CountDownLatch latch) {
1495	+	await(latch, LONG_DELAY_MS);
1496	+	}
1497	+
1498		public void await(Semaphore semaphore) {
1499		try {
1500	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1500	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1501	>	fail("timed out waiting for Semaphore for "
1502	>	+ (LONG_DELAY_MS/1000) + " sec");
1503		} catch (Throwable fail) {
1504		threadUnexpectedException(fail);
1505		}
#	Line 1636 | Line 1835 | public class JSR166TestCase extends Test
1835		} catch (NoSuchElementException success) {}
1836		assertFalse(it.hasNext());
1837		}
1838	+
1839	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1840	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1841	+	}
1842	+
1843	+	public Runnable runnableThrowing(final RuntimeException ex) {
1844	+	return new Runnable() { public void run() { throw ex; }};
1845	+	}
1846	+
1847	+	/** A reusable thread pool to be shared by tests. */
1848	+	static final ExecutorService cachedThreadPool =
1849	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1850	+	1000L, MILLISECONDS,
1851	+	new SynchronousQueue<Runnable>());
1852	+
1853		}

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