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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.152 by jsr166, Sat Oct 3 19:29:11 2015 UTC vs.
Revision 1.193 by jsr166, Mon May 23 18:19:48 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 19 | Line 28 | 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 47 | Line 58 | import java.util.concurrent.RecursiveAct
58		import java.util.concurrent.RecursiveTask;
59		import java.util.concurrent.RejectedExecutionHandler;
60		import java.util.concurrent.Semaphore;
61	+	import java.util.concurrent.SynchronousQueue;
62		import java.util.concurrent.ThreadFactory;
63		import java.util.concurrent.ThreadPoolExecutor;
64		import java.util.concurrent.TimeoutException;
65	+	import java.util.concurrent.atomic.AtomicBoolean;
66		import java.util.concurrent.atomic.AtomicReference;
67	+	import java.util.regex.Matcher;
68		import java.util.regex.Pattern;
69
70		import junit.framework.AssertionFailedError;
#	Line 108 | Line 122 | import junit.framework.TestSuite;
122		* methods as there are exceptions the method can throw. Sometimes
123		* there are multiple tests per JSR166 method when the different
124		* "normal" behaviors differ significantly. And sometimes testcases
125	<	* cover multiple methods when they cannot be tested in
112	<	* isolation.
125	>	* cover multiple methods when they cannot be tested in isolation.
126		*
127		* <li>The documentation style for testcases is to provide as javadoc
128		* a simple sentence or two describing the property that the testcase
#	Line 172 | Line 185 | public class JSR166TestCase extends Test
185		private static final int suiteRuns =
186		Integer.getInteger("jsr166.suiteRuns", 1);
187
188	+	/**
189	+	* Returns the value of the system property, or NaN if not defined.
190	+	*/
191	+	private static float systemPropertyValue(String name) {
192	+	String floatString = System.getProperty(name);
193	+	if (floatString == null)
194	+	return Float.NaN;
195	+	try {
196	+	return Float.parseFloat(floatString);
197	+	} catch (NumberFormatException ex) {
198	+	throw new IllegalArgumentException(
199	+	String.format("Bad float value in system property %s=%s",
200	+	name, floatString));
201	+	}
202	+	}
203	+
204	+	/**
205	+	* The scaling factor to apply to standard delays used in tests.
206	+	* May be initialized from any of:
207	+	* - the "jsr166.delay.factor" system property
208	+	* - the "test.timeout.factor" system property (as used by jtreg)
209	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
210	+	* - hard-coded fuzz factor when using a known slowpoke VM
211	+	*/
212	+	private static final float delayFactor = delayFactor();
213	+
214	+	private static float delayFactor() {
215	+	float x;
216	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
217	+	return x;
218	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
219	+	return x;
220	+	String prop = System.getProperty("java.vm.version");
221	+	if (prop != null && prop.matches(".*debug.*"))
222	+	return 4.0f; // How much slower is fastdebug than product?!
223	+	return 1.0f;
224	+	}
225	+
226		public JSR166TestCase() { super(); }
227		public JSR166TestCase(String name) { super(name); }
228
#	Line 187 | Line 238 | public class JSR166TestCase extends Test
238		return (regex == null) ? null : Pattern.compile(regex);
239		}
240
241	+	// Instrumentation to debug very rare, but very annoying hung test runs.
242	+	static volatile TestCase currentTestCase;
243	+	// static volatile int currentRun = 0;
244	+	static {
245	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
246	+	// Avoid spurious reports with enormous runsPerTest.
247	+	// A single test case run should never take more than 1 second.
248	+	// But let's cap it at the high end too ...
249	+	final int timeoutMinutes =
250	+	Math.min(15, Math.max(runsPerTest / 60, 1));
251	+	for (TestCase lastTestCase = currentTestCase;;) {
252	+	try { MINUTES.sleep(timeoutMinutes); }
253	+	catch (InterruptedException unexpected) { break; }
254	+	if (lastTestCase == currentTestCase) {
255	+	System.err.printf(
256	+	"Looks like we're stuck running test: %s%n",
257	+	lastTestCase);
258	+	//                     System.err.printf(
259	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
260	+	//                         lastTestCase, currentRun, runsPerTest);
261	+	//                     System.err.println("availableProcessors=" +
262	+	//                         Runtime.getRuntime().availableProcessors());
263	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
264	+	dumpTestThreads();
265	+	// one stack dump is probably enough; more would be spam
266	+	break;
267	+	}
268	+	lastTestCase = currentTestCase;
269	+	}}};
270	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
271	+	thread.setDaemon(true);
272	+	thread.start();
273	+	}
274	+
275	+	//     public static String cpuModel() {
276	+	//         try {
277	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
278	+	//                 .matcher(new String(
279	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
280	+	//             matcher.find();
281	+	//             return matcher.group(1);
282	+	//         } catch (Exception ex) { return null; }
283	+	//     }
284	+
285		public void runBare() throws Throwable {
286	+	currentTestCase = this;
287		if (methodFilter == null
288		|| methodFilter.matcher(toString()).find())
289		super.runBare();
#	Line 195 | Line 291 | public class JSR166TestCase extends Test
291
292		protected void runTest() throws Throwable {
293		for (int i = 0; i < runsPerTest; i++) {
294	+	// currentRun = i;
295		if (profileTests)
296		runTestProfiled();
297		else
#	Line 223 | Line 320 | public class JSR166TestCase extends Test
320		main(suite(), args);
321		}
322
323	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
324	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
325	+	long runTime;
326	+	public void startTest(Test test) {}
327	+	protected void printHeader(long runTime) {
328	+	this.runTime = runTime; // defer printing for later
329	+	}
330	+	protected void printFooter(TestResult result) {
331	+	if (result.wasSuccessful()) {
332	+	getWriter().println("OK (" + result.runCount() + " tests)"
333	+	+ "  Time: " + elapsedTimeAsString(runTime));
334	+	} else {
335	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
336	+	super.printFooter(result);
337	+	}
338	+	}
339	+	}
340	+
341	+	/**
342	+	* Returns a TestRunner that doesn't bother with unnecessary
343	+	* fluff, like printing a "." for each test case.
344	+	*/
345	+	static junit.textui.TestRunner newPithyTestRunner() {
346	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
347	+	runner.setPrinter(new PithyResultPrinter(System.out));
348	+	return runner;
349	+	}
350	+
351		/**
352		* Runs all unit tests in the given test suite.
353		* Actual behavior influenced by jsr166.* system properties.
#	Line 234 | Line 359 | public class JSR166TestCase extends Test
359		System.setSecurityManager(new SecurityManager());
360		}
361		for (int i = 0; i < suiteRuns; i++) {
362	<	TestResult result = junit.textui.TestRunner.run(suite);
362	>	TestResult result = newPithyTestRunner().doRun(suite);
363		if (!result.wasSuccessful())
364		System.exit(1);
365		System.gc();
#	Line 387 | Line 512 | public class JSR166TestCase extends Test
512		"StampedLockTest",
513		"SubmissionPublisherTest",
514		"ThreadLocalRandom8Test",
515	+	"TimeUnit8Test",
516		};
517		addNamedTestClasses(suite, java8TestClassNames);
518		}
#	Line 394 | Line 520 | public class JSR166TestCase extends Test
520		// Java9+ test classes
521		if (atLeastJava9()) {
522		String[] java9TestClassNames = {
523	<	// Currently empty, but expecting varhandle tests
523	>	"ExecutorCompletionService9Test",
524		};
525		addNamedTestClasses(suite, java9TestClassNames);
526		}
#	Line 461 | Line 587 | public class JSR166TestCase extends Test
587		} else {
588		return new TestSuite();
589		}
464	–
590		}
591
592		// Delays for timing-dependent tests, in milliseconds.
#	Line 472 | Line 597 | public class JSR166TestCase extends Test
597		public static long LONG_DELAY_MS;
598
599		/**
600	<	* Returns the shortest timed delay. This could
601	<	* be reimplemented to use for example a Property.
600	>	* Returns the shortest timed delay. This can be scaled up for
601	>	* slow machines using the jsr166.delay.factor system property,
602	>	* or via jtreg's -timeoutFactor: flag.
603	>	* http://openjdk.java.net/jtreg/command-help.html
604		*/
605		protected long getShortDelay() {
606	<	return 50;
606	>	return (long) (50 * delayFactor);
607		}
608
609		/**
#	Line 519 | Line 646 | public class JSR166TestCase extends Test
646		* the same test have no effect.
647		*/
648		public void threadRecordFailure(Throwable t) {
649	+	System.err.println(t);
650	+	dumpTestThreads();
651		threadFailure.compareAndSet(null, t);
652		}
653
#	Line 529 | Line 658 | public class JSR166TestCase extends Test
658		void tearDownFail(String format, Object... args) {
659		String msg = toString() + ": " + String.format(format, args);
660		System.err.println(msg);
661	<	printAllStackTraces();
661	>	dumpTestThreads();
662		throw new AssertionFailedError(msg);
663		}
664
#	Line 566 | Line 695 | public class JSR166TestCase extends Test
695		}
696
697		/**
698	<	* Finds missing try { ... } finally { joinPool(e); }
698	>	* Finds missing PoolCleaners
699		*/
700		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
701		Thread[] survivors = new Thread[7];
#	Line 725 | Line 854 | public class JSR166TestCase extends Test
854		/**
855		* Delays, via Thread.sleep, for the given millisecond delay, but
856		* if the sleep is shorter than specified, may re-sleep or yield
857	<	* until time elapses.
857	>	* until time elapses.  Ensures that the given time, as measured
858	>	* by System.nanoTime(), has elapsed.
859		*/
860		static void delay(long millis) throws InterruptedException {
861	<	long startTime = System.nanoTime();
862	<	long ns = millis * 1000 * 1000;
863	<	for (;;) {
861	>	long nanos = millis * (1000 * 1000);
862	>	final long wakeupTime = System.nanoTime() + nanos;
863	>	do {
864		if (millis > 0L)
865		Thread.sleep(millis);
866		else // too short to sleep
867		Thread.yield();
868	<	long d = ns - (System.nanoTime() - startTime);
869	<	if (d > 0L)
870	<	millis = d / (1000 * 1000);
741	<	else
742	<	break;
743	<	}
868	>	nanos = wakeupTime - System.nanoTime();
869	>	millis = nanos / (1000 * 1000);
870	>	} while (nanos >= 0L);
871		}
872
873		/**
874		* Allows use of try-with-resources with per-test thread pools.
875		*/
876	<	static class PoolCloser<T extends ExecutorService>
877	<	implements AutoCloseable {
878	<	public final T pool;
752	<	public PoolCloser(T pool) { this.pool = pool; }
876	>	class PoolCleaner implements AutoCloseable {
877	>	private final ExecutorService pool;
878	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
879		public void close() { joinPool(pool); }
880		}
881
882		/**
883	+	* An extension of PoolCleaner that has an action to release the pool.
884	+	*/
885	+	class PoolCleanerWithReleaser extends PoolCleaner {
886	+	private final Runnable releaser;
887	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
888	+	super(pool);
889	+	this.releaser = releaser;
890	+	}
891	+	public void close() {
892	+	try {
893	+	releaser.run();
894	+	} finally {
895	+	super.close();
896	+	}
897	+	}
898	+	}
899	+
900	+	PoolCleaner cleaner(ExecutorService pool) {
901	+	return new PoolCleaner(pool);
902	+	}
903	+
904	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
905	+	return new PoolCleanerWithReleaser(pool, releaser);
906	+	}
907	+
908	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
909	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
910	+	}
911	+
912	+	Runnable releaser(final CountDownLatch latch) {
913	+	return new Runnable() { public void run() {
914	+	do { latch.countDown(); }
915	+	while (latch.getCount() > 0);
916	+	}};
917	+	}
918	+
919	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
920	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
921	+	}
922	+
923	+	Runnable releaser(final AtomicBoolean flag) {
924	+	return new Runnable() { public void run() { flag.set(true); }};
925	+	}
926	+
927	+	/**
928		* Waits out termination of a thread pool or fails doing so.
929		*/
930	<	static void joinPool(ExecutorService pool) {
930	>	void joinPool(ExecutorService pool) {
931		try {
932		pool.shutdown();
933	<	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
934	<	fail("ExecutorService " + pool +
935	<	" did not terminate in a timely manner");
933	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
934	>	try {
935	>	threadFail("ExecutorService " + pool +
936	>	" did not terminate in a timely manner");
937	>	} finally {
938	>	// last resort, for the benefit of subsequent tests
939	>	pool.shutdownNow();
940	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
941	>	}
942	>	}
943		} catch (SecurityException ok) {
944		// Allowed in case test doesn't have privs
945		} catch (InterruptedException fail) {
946	<	fail("Unexpected InterruptedException");
946	>	threadFail("Unexpected InterruptedException");
947		}
948		}
949
#	Line 778 | Line 956 | public class JSR166TestCase extends Test
956		* necessarily individually slow because they must block.
957		*/
958		void testInParallel(Action ... actions) {
959	<	try (PoolCloser<ExecutorService> poolCloser
960	<	= new PoolCloser<>(Executors.newCachedThreadPool())) {
783	<	ExecutorService pool = poolCloser.pool;
959	>	ExecutorService pool = Executors.newCachedThreadPool();
960	>	try (PoolCleaner cleaner = cleaner(pool)) {
961		ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
962		for (final Action action : actions)
963		futures.add(pool.submit(new CheckedRunnable() {
#	Line 797 | Line 974 | public class JSR166TestCase extends Test
974		}
975
976		/**
977	<	* A debugging tool to print all stack traces, as jstack does.
977	>	* A debugging tool to print stack traces of most threads, as jstack does.
978		* Uninteresting threads are filtered out.
979		*/
980	<	static void printAllStackTraces() {
980	>	static void dumpTestThreads() {
981		ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
982		System.err.println("------ stacktrace dump start ------");
983		for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
#	Line 813 | Line 990 | public class JSR166TestCase extends Test
990		if ("Finalizer".equals(name)
991		&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
992		continue;
993	+	if ("checkForWedgedTest".equals(name))
994	+	continue;
995		System.err.print(info);
996		}
997		System.err.println("------ stacktrace dump end ------");
#	Line 835 | Line 1014 | public class JSR166TestCase extends Test
1014		delay(millis);
1015		assertTrue(thread.isAlive());
1016		} catch (InterruptedException fail) {
1017	<	fail("Unexpected InterruptedException");
1017	>	threadFail("Unexpected InterruptedException");
1018		}
1019		}
1020
#	Line 857 | Line 1036 | public class JSR166TestCase extends Test
1036		for (Thread thread : threads)
1037		assertTrue(thread.isAlive());
1038		} catch (InterruptedException fail) {
1039	<	fail("Unexpected InterruptedException");
1039	>	threadFail("Unexpected InterruptedException");
1040		}
1041		}
1042
#	Line 1135 | Line 1314 | public class JSR166TestCase extends Test
1314		} finally {
1315		if (t.getState() != Thread.State.TERMINATED) {
1316		t.interrupt();
1317	<	fail("Test timed out");
1317	>	threadFail("timed out waiting for thread to terminate");
1318		}
1319		}
1320		}
#	Line 1283 | Line 1462 | public class JSR166TestCase extends Test
1462		}};
1463		}
1464
1465	<	public Runnable awaiter(final CountDownLatch latch) {
1466	<	return new CheckedRunnable() {
1467	<	public void realRun() throws InterruptedException {
1468	<	await(latch);
1469	<	}};
1465	>	class LatchAwaiter extends CheckedRunnable {
1466	>	static final int NEW = 0;
1467	>	static final int RUNNING = 1;
1468	>	static final int DONE = 2;
1469	>	final CountDownLatch latch;
1470	>	int state = NEW;
1471	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1472	>	public void realRun() throws InterruptedException {
1473	>	state = 1;
1474	>	await(latch);
1475	>	state = 2;
1476	>	}
1477		}
1478
1479	<	public void await(CountDownLatch latch) {
1479	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1480	>	return new LatchAwaiter(latch);
1481	>	}
1482	>
1483	>	public void await(CountDownLatch latch, long timeoutMillis) {
1484		try {
1485	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1485	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1486	>	fail("timed out waiting for CountDownLatch for "
1487	>	+ (timeoutMillis/1000) + " sec");
1488		} catch (Throwable fail) {
1489		threadUnexpectedException(fail);
1490		}
1491		}
1492
1493	+	public void await(CountDownLatch latch) {
1494	+	await(latch, LONG_DELAY_MS);
1495	+	}
1496	+
1497		public void await(Semaphore semaphore) {
1498		try {
1499	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1499	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1500	>	fail("timed out waiting for Semaphore for "
1501	>	+ (LONG_DELAY_MS/1000) + " sec");
1502		} catch (Throwable fail) {
1503		threadUnexpectedException(fail);
1504		}
#	Line 1636 | Line 1834 | public class JSR166TestCase extends Test
1834		} catch (NoSuchElementException success) {}
1835		assertFalse(it.hasNext());
1836		}
1837	+
1838	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1839	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1840	+	}
1841	+
1842	+	public Runnable runnableThrowing(final RuntimeException ex) {
1843	+	return new Runnable() { public void run() { throw ex; }};
1844	+	}
1845	+
1846	+	/** A reusable thread pool to be shared by tests. */
1847	+	static final ExecutorService cachedThreadPool =
1848	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1849	+	1000L, MILLISECONDS,
1850	+	new SynchronousQueue<Runnable>());
1851	+
1852		}

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