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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.145 by jsr166, Fri Sep 25 05:41:29 2015 UTC vs.
Revision 1.182 by jsr166, Sun Jan 17 00:07:51 2016 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	+	/*
10	+	* @test
11	+	* @summary JSR-166 tck tests
12	+	* @build *
13	+	* @run junit/othervm/timeout=1000 JSR166TestCase
14	+	*/
15	+
16		import static java.util.concurrent.TimeUnit.MILLISECONDS;
17	+	import static java.util.concurrent.TimeUnit.MINUTES;
18		import static java.util.concurrent.TimeUnit.NANOSECONDS;
19
20		import java.io.ByteArrayInputStream;
#	Line 15 | Line 23 | import java.io.ObjectInputStream;
23		import java.io.ObjectOutputStream;
24		import java.lang.management.ManagementFactory;
25		import java.lang.management.ThreadInfo;
26	+	import java.lang.management.ThreadMXBean;
27		import java.lang.reflect.Constructor;
28		import java.lang.reflect.Method;
29		import java.lang.reflect.Modifier;
30	+	import java.nio.file.Files;
31	+	import java.nio.file.Paths;
32		import java.security.CodeSource;
33		import java.security.Permission;
34		import java.security.PermissionCollection;
#	Line 40 | Line 51 | import java.util.concurrent.CyclicBarrie
51		import java.util.concurrent.ExecutionException;
52		import java.util.concurrent.Executors;
53		import java.util.concurrent.ExecutorService;
54	+	import java.util.concurrent.ForkJoinPool;
55		import java.util.concurrent.Future;
56		import java.util.concurrent.RecursiveAction;
57		import java.util.concurrent.RecursiveTask;
#	Line 49 | Line 61 | import java.util.concurrent.ThreadFactor
61		import java.util.concurrent.ThreadPoolExecutor;
62		import java.util.concurrent.TimeoutException;
63		import java.util.concurrent.atomic.AtomicReference;
64	+	import java.util.regex.Matcher;
65		import java.util.regex.Pattern;
66
67		import junit.framework.AssertionFailedError;
#	Line 106 | Line 119 | import junit.framework.TestSuite;
119		* methods as there are exceptions the method can throw. Sometimes
120		* there are multiple tests per JSR166 method when the different
121		* "normal" behaviors differ significantly. And sometimes testcases
122	<	* cover multiple methods when they cannot be tested in
110	<	* isolation.
122	>	* cover multiple methods when they cannot be tested in isolation.
123		*
124		* <li>The documentation style for testcases is to provide as javadoc
125		* a simple sentence or two describing the property that the testcase
#	Line 170 | Line 182 | public class JSR166TestCase extends Test
182		private static final int suiteRuns =
183		Integer.getInteger("jsr166.suiteRuns", 1);
184
185	+	/**
186	+	* The scaling factor to apply to standard delays used in tests.
187	+	*/
188	+	private static final int delayFactor =
189	+	Integer.getInteger("jsr166.delay.factor", 1);
190	+
191		public JSR166TestCase() { super(); }
192		public JSR166TestCase(String name) { super(name); }
193
#	Line 185 | Line 203 | public class JSR166TestCase extends Test
203		return (regex == null) ? null : Pattern.compile(regex);
204		}
205
206	<	protected void runTest() throws Throwable {
206	>	// Instrumentation to debug very rare, but very annoying hung test runs.
207	>	static volatile TestCase currentTestCase;
208	>	// static volatile int currentRun = 0;
209	>	static {
210	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
211	>	// Avoid spurious reports with enormous runsPerTest.
212	>	// A single test case run should never take more than 1 second.
213	>	// But let's cap it at the high end too ...
214	>	final int timeoutMinutes =
215	>	Math.min(15, Math.max(runsPerTest / 60, 1));
216	>	for (TestCase lastTestCase = currentTestCase;;) {
217	>	try { MINUTES.sleep(timeoutMinutes); }
218	>	catch (InterruptedException unexpected) { break; }
219	>	if (lastTestCase == currentTestCase) {
220	>	System.err.printf(
221	>	"Looks like we're stuck running test: %s%n",
222	>	lastTestCase);
223	>	//                     System.err.printf(
224	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
225	>	//                         lastTestCase, currentRun, runsPerTest);
226	>	//                     System.err.println("availableProcessors=" +
227	>	//                         Runtime.getRuntime().availableProcessors());
228	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
229	>	dumpTestThreads();
230	>	// one stack dump is probably enough; more would be spam
231	>	break;
232	>	}
233	>	lastTestCase = currentTestCase;
234	>	}}};
235	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
236	>	thread.setDaemon(true);
237	>	thread.start();
238	>	}
239	>
240	>	//     public static String cpuModel() {
241	>	//         try {
242	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
243	>	//                 .matcher(new String(
244	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
245	>	//             matcher.find();
246	>	//             return matcher.group(1);
247	>	//         } catch (Exception ex) { return null; }
248	>	//     }
249	>
250	>	public void runBare() throws Throwable {
251	>	currentTestCase = this;
252		if (methodFilter == null
253	<	|| methodFilter.matcher(toString()).find()) {
254	<	for (int i = 0; i < runsPerTest; i++) {
255	<	if (profileTests)
256	<	runTestProfiled();
257	<	else
258	<	super.runTest();
259	<	}
253	>	|| methodFilter.matcher(toString()).find())
254	>	super.runBare();
255	>	}
256	>
257	>	protected void runTest() throws Throwable {
258	>	for (int i = 0; i < runsPerTest; i++) {
259	>	// currentRun = i;
260	>	if (profileTests)
261	>	runTestProfiled();
262	>	else
263	>	super.runTest();
264		}
265		}
266
#	Line 218 | Line 285 | public class JSR166TestCase extends Test
285		main(suite(), args);
286		}
287
288	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
289	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
290	+	long runTime;
291	+	public void startTest(Test test) {}
292	+	protected void printHeader(long runTime) {
293	+	this.runTime = runTime; // defer printing for later
294	+	}
295	+	protected void printFooter(TestResult result) {
296	+	if (result.wasSuccessful()) {
297	+	getWriter().println("OK (" + result.runCount() + " tests)"
298	+	+ "  Time: " + elapsedTimeAsString(runTime));
299	+	} else {
300	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
301	+	super.printFooter(result);
302	+	}
303	+	}
304	+	}
305	+
306	+	/**
307	+	* Returns a TestRunner that doesn't bother with unnecessary
308	+	* fluff, like printing a "." for each test case.
309	+	*/
310	+	static junit.textui.TestRunner newPithyTestRunner() {
311	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
312	+	runner.setPrinter(new PithyResultPrinter(System.out));
313	+	return runner;
314	+	}
315	+
316		/**
317		* Runs all unit tests in the given test suite.
318		* Actual behavior influenced by jsr166.* system properties.
#	Line 229 | Line 324 | public class JSR166TestCase extends Test
324		System.setSecurityManager(new SecurityManager());
325		}
326		for (int i = 0; i < suiteRuns; i++) {
327	<	TestResult result = junit.textui.TestRunner.run(suite);
327	>	TestResult result = newPithyTestRunner().doRun(suite);
328		if (!result.wasSuccessful())
329		System.exit(1);
330		System.gc();
#	Line 456 | Line 551 | public class JSR166TestCase extends Test
551		} else {
552		return new TestSuite();
553		}
459	–
554		}
555
556		// Delays for timing-dependent tests, in milliseconds.
#	Line 467 | Line 561 | public class JSR166TestCase extends Test
561		public static long LONG_DELAY_MS;
562
563		/**
564	<	* Returns the shortest timed delay. This could
565	<	* be reimplemented to use for example a Property.
564	>	* Returns the shortest timed delay. This can be scaled up for
565	>	* slow machines using the jsr166.delay.factor system property.
566		*/
567		protected long getShortDelay() {
568	<	return 50;
568	>	return 50 * delayFactor;
569		}
570
571		/**
#	Line 514 | Line 608 | public class JSR166TestCase extends Test
608		* the same test have no effect.
609		*/
610		public void threadRecordFailure(Throwable t) {
611	+	System.err.println(t);
612	+	dumpTestThreads();
613		threadFailure.compareAndSet(null, t);
614		}
615
#	Line 521 | Line 617 | public class JSR166TestCase extends Test
617		setDelays();
618		}
619
620	+	void tearDownFail(String format, Object... args) {
621	+	String msg = toString() + ": " + String.format(format, args);
622	+	System.err.println(msg);
623	+	dumpTestThreads();
624	+	throw new AssertionFailedError(msg);
625	+	}
626	+
627		/**
628		* Extra checks that get done for all test cases.
629		*
#	Line 548 | Line 651 | public class JSR166TestCase extends Test
651		}
652
653		if (Thread.interrupted())
654	<	throw new AssertionFailedError("interrupt status set in main thread");
654	>	tearDownFail("interrupt status set in main thread");
655
656		checkForkJoinPoolThreadLeaks();
657		}
658
659		/**
660	<	* Finds missing try { ... } finally { joinPool(e); }
660	>	* Finds missing PoolCleaners
661		*/
662		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
663	<	Thread[] survivors = new Thread[5];
663	>	Thread[] survivors = new Thread[7];
664		int count = Thread.enumerate(survivors);
665		for (int i = 0; i < count; i++) {
666		Thread thread = survivors[i];
#	Line 565 | Line 668 | public class JSR166TestCase extends Test
668		if (name.startsWith("ForkJoinPool-")) {
669		// give thread some time to terminate
670		thread.join(LONG_DELAY_MS);
671	<	if (!thread.isAlive()) continue;
672	<	throw new AssertionFailedError
673	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
571	<	toString(), name));
671	>	if (thread.isAlive())
672	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
673	>	thread);
674		}
675		}
676	+
677	+	if (!ForkJoinPool.commonPool()
678	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
679	+	tearDownFail("ForkJoin common pool thread stuck");
680		}
681
682		/**
#	Line 583 | Line 689 | public class JSR166TestCase extends Test
689		fail(reason);
690		} catch (AssertionFailedError t) {
691		threadRecordFailure(t);
692	<	fail(reason);
692	>	throw t;
693		}
694		}
695
#	Line 710 | Line 816 | public class JSR166TestCase extends Test
816		/**
817		* Delays, via Thread.sleep, for the given millisecond delay, but
818		* if the sleep is shorter than specified, may re-sleep or yield
819	<	* until time elapses.
819	>	* until time elapses.  Ensures that the given time, as measured
820	>	* by System.nanoTime(), has elapsed.
821		*/
822		static void delay(long millis) throws InterruptedException {
823	<	long startTime = System.nanoTime();
824	<	long ns = millis * 1000 * 1000;
825	<	for (;;) {
823	>	long nanos = millis * (1000 * 1000);
824	>	final long wakeupTime = System.nanoTime() + nanos;
825	>	do {
826		if (millis > 0L)
827		Thread.sleep(millis);
828		else // too short to sleep
829		Thread.yield();
830	<	long d = ns - (System.nanoTime() - startTime);
831	<	if (d > 0L)
832	<	millis = d / (1000 * 1000);
833	<	else
834	<	break;
830	>	nanos = wakeupTime - System.nanoTime();
831	>	millis = nanos / (1000 * 1000);
832	>	} while (nanos >= 0L);
833	>	}
834	>
835	>	/**
836	>	* Allows use of try-with-resources with per-test thread pools.
837	>	*/
838	>	class PoolCleaner implements AutoCloseable {
839	>	private final ExecutorService pool;
840	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
841	>	public void close() { joinPool(pool); }
842	>	}
843	>
844	>	/**
845	>	* An extension of PoolCleaner that has an action to release the pool.
846	>	*/
847	>	class PoolCleanerWithReleaser extends PoolCleaner {
848	>	private final Runnable releaser;
849	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
850	>	super(pool);
851	>	this.releaser = releaser;
852	>	}
853	>	public void close() {
854	>	try {
855	>	releaser.run();
856	>	} finally {
857	>	super.close();
858	>	}
859		}
860		}
861
862	+	PoolCleaner cleaner(ExecutorService pool) {
863	+	return new PoolCleaner(pool);
864	+	}
865	+
866	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
867	+	return new PoolCleanerWithReleaser(pool, releaser);
868	+	}
869	+
870	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
871	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
872	+	}
873	+
874	+	Runnable releaser(final CountDownLatch latch) {
875	+	return new Runnable() { public void run() {
876	+	do { latch.countDown(); }
877	+	while (latch.getCount() > 0);
878	+	}};
879	+	}
880	+
881		/**
882		* Waits out termination of a thread pool or fails doing so.
883		*/
884		void joinPool(ExecutorService pool) {
885		try {
886		pool.shutdown();
887	<	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
888	<	fail("ExecutorService " + pool +
889	<	" did not terminate in a timely manner");
887	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
888	>	try {
889	>	threadFail("ExecutorService " + pool +
890	>	" did not terminate in a timely manner");
891	>	} finally {
892	>	// last resort, for the benefit of subsequent tests
893	>	pool.shutdownNow();
894	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
895	>	}
896	>	}
897		} catch (SecurityException ok) {
898		// Allowed in case test doesn't have privs
899		} catch (InterruptedException fail) {
900	<	fail("Unexpected InterruptedException");
900	>	threadFail("Unexpected InterruptedException");
901		}
902		}
903
#	Line 754 | Line 911 | public class JSR166TestCase extends Test
911		*/
912		void testInParallel(Action ... actions) {
913		ExecutorService pool = Executors.newCachedThreadPool();
914	<	try {
914	>	try (PoolCleaner cleaner = cleaner(pool)) {
915		ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
916		for (final Action action : actions)
917		futures.add(pool.submit(new CheckedRunnable() {
#	Line 767 | Line 924 | public class JSR166TestCase extends Test
924		} catch (Exception ex) {
925		threadUnexpectedException(ex);
926		}
770	–	} finally {
771	–	joinPool(pool);
927		}
928		}
929
930		/**
931	<	* A debugging tool to print all stack traces, as jstack does.
931	>	* A debugging tool to print stack traces of most threads, as jstack does.
932	>	* Uninteresting threads are filtered out.
933		*/
934	<	static void printAllStackTraces() {
935	<	for (ThreadInfo info :
936	<	ManagementFactory.getThreadMXBean()
937	<	.dumpAllThreads(true, true))
934	>	static void dumpTestThreads() {
935	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
936	>	System.err.println("------ stacktrace dump start ------");
937	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
938	>	String name = info.getThreadName();
939	>	if ("Signal Dispatcher".equals(name))
940	>	continue;
941	>	if ("Reference Handler".equals(name)
942	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
943	>	continue;
944	>	if ("Finalizer".equals(name)
945	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
946	>	continue;
947	>	if ("checkForWedgedTest".equals(name))
948	>	continue;
949		System.err.print(info);
950	+	}
951	+	System.err.println("------ stacktrace dump end ------");
952		}
953
954		/**
#	Line 799 | Line 968 | public class JSR166TestCase extends Test
968		delay(millis);
969		assertTrue(thread.isAlive());
970		} catch (InterruptedException fail) {
971	<	fail("Unexpected InterruptedException");
971	>	threadFail("Unexpected InterruptedException");
972		}
973		}
974
#	Line 821 | Line 990 | public class JSR166TestCase extends Test
990		for (Thread thread : threads)
991		assertTrue(thread.isAlive());
992		} catch (InterruptedException fail) {
993	<	fail("Unexpected InterruptedException");
993	>	threadFail("Unexpected InterruptedException");
994		}
995		}
996
#	Line 1099 | Line 1268 | public class JSR166TestCase extends Test
1268		} finally {
1269		if (t.getState() != Thread.State.TERMINATED) {
1270		t.interrupt();
1271	<	fail("Test timed out");
1271	>	threadFail("timed out waiting for thread to terminate");
1272		}
1273		}
1274		}
#	Line 1240 | Line 1409 | public class JSR166TestCase extends Test
1409		}};
1410		}
1411
1412	<	public Runnable awaiter(final CountDownLatch latch) {
1412	>	public Runnable countDowner(final CountDownLatch latch) {
1413		return new CheckedRunnable() {
1414		public void realRun() throws InterruptedException {
1415	<	await(latch);
1415	>	latch.countDown();
1416		}};
1417		}
1418
1419	+	class LatchAwaiter extends CheckedRunnable {
1420	+	static final int NEW = 0;
1421	+	static final int RUNNING = 1;
1422	+	static final int DONE = 2;
1423	+	final CountDownLatch latch;
1424	+	int state = NEW;
1425	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1426	+	public void realRun() throws InterruptedException {
1427	+	state = 1;
1428	+	await(latch);
1429	+	state = 2;
1430	+	}
1431	+	}
1432	+
1433	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1434	+	return new LatchAwaiter(latch);
1435	+	}
1436	+
1437		public void await(CountDownLatch latch) {
1438		try {
1439	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1439	>	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1440	>	fail("timed out waiting for CountDownLatch for "
1441	>	+ (LONG_DELAY_MS/1000) + " sec");
1442		} catch (Throwable fail) {
1443		threadUnexpectedException(fail);
1444		}
#	Line 1257 | Line 1446 | public class JSR166TestCase extends Test
1446
1447		public void await(Semaphore semaphore) {
1448		try {
1449	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1449	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1450	>	fail("timed out waiting for Semaphore for "
1451	>	+ (LONG_DELAY_MS/1000) + " sec");
1452		} catch (Throwable fail) {
1453		threadUnexpectedException(fail);
1454		}

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