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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.146 by jsr166, Fri Sep 25 23:32:15 2015 UTC vs.
Revision 1.181 by jsr166, Mon Nov 9 06:06:54 2015 UTC

#	Line 7 | Line 7
7		*/
8
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	+	import static java.util.concurrent.TimeUnit.MINUTES;
11		import static java.util.concurrent.TimeUnit.NANOSECONDS;
12
13		import java.io.ByteArrayInputStream;
#	Line 15 | Line 16 | import java.io.ObjectInputStream;
16		import java.io.ObjectOutputStream;
17		import java.lang.management.ManagementFactory;
18		import java.lang.management.ThreadInfo;
19	+	import java.lang.management.ThreadMXBean;
20		import java.lang.reflect.Constructor;
21		import java.lang.reflect.Method;
22		import java.lang.reflect.Modifier;
23	+	import java.nio.file.Files;
24	+	import java.nio.file.Paths;
25		import java.security.CodeSource;
26		import java.security.Permission;
27		import java.security.PermissionCollection;
#	Line 50 | Line 54 | import java.util.concurrent.ThreadFactor
54		import java.util.concurrent.ThreadPoolExecutor;
55		import java.util.concurrent.TimeoutException;
56		import java.util.concurrent.atomic.AtomicReference;
57	+	import java.util.regex.Matcher;
58		import java.util.regex.Pattern;
59
60		import junit.framework.AssertionFailedError;
#	Line 107 | Line 112 | import junit.framework.TestSuite;
112		* methods as there are exceptions the method can throw. Sometimes
113		* there are multiple tests per JSR166 method when the different
114		* "normal" behaviors differ significantly. And sometimes testcases
115	<	* cover multiple methods when they cannot be tested in
111	<	* isolation.
115	>	* cover multiple methods when they cannot be tested in isolation.
116		*
117		* <li>The documentation style for testcases is to provide as javadoc
118		* a simple sentence or two describing the property that the testcase
#	Line 171 | Line 175 | public class JSR166TestCase extends Test
175		private static final int suiteRuns =
176		Integer.getInteger("jsr166.suiteRuns", 1);
177
178	+	/**
179	+	* The scaling factor to apply to standard delays used in tests.
180	+	*/
181	+	private static final int delayFactor =
182	+	Integer.getInteger("jsr166.delay.factor", 1);
183	+
184		public JSR166TestCase() { super(); }
185		public JSR166TestCase(String name) { super(name); }
186
#	Line 186 | Line 196 | public class JSR166TestCase extends Test
196		return (regex == null) ? null : Pattern.compile(regex);
197		}
198
199	<	protected void runTest() throws Throwable {
199	>	// Instrumentation to debug very rare, but very annoying hung test runs.
200	>	static volatile TestCase currentTestCase;
201	>	// static volatile int currentRun = 0;
202	>	static {
203	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
204	>	// Avoid spurious reports with enormous runsPerTest.
205	>	// A single test case run should never take more than 1 second.
206	>	// But let's cap it at the high end too ...
207	>	final int timeoutMinutes =
208	>	Math.min(15, Math.max(runsPerTest / 60, 1));
209	>	for (TestCase lastTestCase = currentTestCase;;) {
210	>	try { MINUTES.sleep(timeoutMinutes); }
211	>	catch (InterruptedException unexpected) { break; }
212	>	if (lastTestCase == currentTestCase) {
213	>	System.err.printf(
214	>	"Looks like we're stuck running test: %s%n",
215	>	lastTestCase);
216	>	//                     System.err.printf(
217	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
218	>	//                         lastTestCase, currentRun, runsPerTest);
219	>	//                     System.err.println("availableProcessors=" +
220	>	//                         Runtime.getRuntime().availableProcessors());
221	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
222	>	dumpTestThreads();
223	>	// one stack dump is probably enough; more would be spam
224	>	break;
225	>	}
226	>	lastTestCase = currentTestCase;
227	>	}}};
228	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
229	>	thread.setDaemon(true);
230	>	thread.start();
231	>	}
232	>
233	>	//     public static String cpuModel() {
234	>	//         try {
235	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
236	>	//                 .matcher(new String(
237	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
238	>	//             matcher.find();
239	>	//             return matcher.group(1);
240	>	//         } catch (Exception ex) { return null; }
241	>	//     }
242	>
243	>	public void runBare() throws Throwable {
244	>	currentTestCase = this;
245		if (methodFilter == null
246	<	|| methodFilter.matcher(toString()).find()) {
247	<	for (int i = 0; i < runsPerTest; i++) {
248	<	if (profileTests)
249	<	runTestProfiled();
250	<	else
251	<	super.runTest();
252	<	}
246	>	|| methodFilter.matcher(toString()).find())
247	>	super.runBare();
248	>	}
249	>
250	>	protected void runTest() throws Throwable {
251	>	for (int i = 0; i < runsPerTest; i++) {
252	>	// currentRun = i;
253	>	if (profileTests)
254	>	runTestProfiled();
255	>	else
256	>	super.runTest();
257		}
258		}
259
#	Line 219 | Line 278 | public class JSR166TestCase extends Test
278		main(suite(), args);
279		}
280
281	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
282	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
283	+	long runTime;
284	+	public void startTest(Test test) {}
285	+	protected void printHeader(long runTime) {
286	+	this.runTime = runTime; // defer printing for later
287	+	}
288	+	protected void printFooter(TestResult result) {
289	+	if (result.wasSuccessful()) {
290	+	getWriter().println("OK (" + result.runCount() + " tests)"
291	+	+ "  Time: " + elapsedTimeAsString(runTime));
292	+	} else {
293	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
294	+	super.printFooter(result);
295	+	}
296	+	}
297	+	}
298	+
299	+	/**
300	+	* Returns a TestRunner that doesn't bother with unnecessary
301	+	* fluff, like printing a "." for each test case.
302	+	*/
303	+	static junit.textui.TestRunner newPithyTestRunner() {
304	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
305	+	runner.setPrinter(new PithyResultPrinter(System.out));
306	+	return runner;
307	+	}
308	+
309		/**
310		* Runs all unit tests in the given test suite.
311		* Actual behavior influenced by jsr166.* system properties.
#	Line 230 | Line 317 | public class JSR166TestCase extends Test
317		System.setSecurityManager(new SecurityManager());
318		}
319		for (int i = 0; i < suiteRuns; i++) {
320	<	TestResult result = junit.textui.TestRunner.run(suite);
320	>	TestResult result = newPithyTestRunner().doRun(suite);
321		if (!result.wasSuccessful())
322		System.exit(1);
323		System.gc();
#	Line 457 | Line 544 | public class JSR166TestCase extends Test
544		} else {
545		return new TestSuite();
546		}
460	–
547		}
548
549		// Delays for timing-dependent tests, in milliseconds.
#	Line 468 | Line 554 | public class JSR166TestCase extends Test
554		public static long LONG_DELAY_MS;
555
556		/**
557	<	* Returns the shortest timed delay. This could
558	<	* be reimplemented to use for example a Property.
557	>	* Returns the shortest timed delay. This can be scaled up for
558	>	* slow machines using the jsr166.delay.factor system property.
559		*/
560		protected long getShortDelay() {
561	<	return 50;
561	>	return 50 * delayFactor;
562		}
563
564		/**
#	Line 515 | Line 601 | public class JSR166TestCase extends Test
601		* the same test have no effect.
602		*/
603		public void threadRecordFailure(Throwable t) {
604	+	System.err.println(t);
605	+	dumpTestThreads();
606		threadFailure.compareAndSet(null, t);
607		}
608
#	Line 525 | Line 613 | public class JSR166TestCase extends Test
613		void tearDownFail(String format, Object... args) {
614		String msg = toString() + ": " + String.format(format, args);
615		System.err.println(msg);
616	<	printAllStackTraces();
616	>	dumpTestThreads();
617		throw new AssertionFailedError(msg);
618		}
619
#	Line 562 | Line 650 | public class JSR166TestCase extends Test
650		}
651
652		/**
653	<	* Finds missing try { ... } finally { joinPool(e); }
653	>	* Finds missing PoolCleaners
654		*/
655		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
656		Thread[] survivors = new Thread[7];
#	Line 594 | Line 682 | public class JSR166TestCase extends Test
682		fail(reason);
683		} catch (AssertionFailedError t) {
684		threadRecordFailure(t);
685	<	fail(reason);
685	>	throw t;
686		}
687		}
688
#	Line 721 | Line 809 | public class JSR166TestCase extends Test
809		/**
810		* Delays, via Thread.sleep, for the given millisecond delay, but
811		* if the sleep is shorter than specified, may re-sleep or yield
812	<	* until time elapses.
812	>	* until time elapses.  Ensures that the given time, as measured
813	>	* by System.nanoTime(), has elapsed.
814		*/
815		static void delay(long millis) throws InterruptedException {
816	<	long startTime = System.nanoTime();
817	<	long ns = millis * 1000 * 1000;
818	<	for (;;) {
816	>	long nanos = millis * (1000 * 1000);
817	>	final long wakeupTime = System.nanoTime() + nanos;
818	>	do {
819		if (millis > 0L)
820		Thread.sleep(millis);
821		else // too short to sleep
822		Thread.yield();
823	<	long d = ns - (System.nanoTime() - startTime);
824	<	if (d > 0L)
825	<	millis = d / (1000 * 1000);
826	<	else
827	<	break;
823	>	nanos = wakeupTime - System.nanoTime();
824	>	millis = nanos / (1000 * 1000);
825	>	} while (nanos >= 0L);
826	>	}
827	>
828	>	/**
829	>	* Allows use of try-with-resources with per-test thread pools.
830	>	*/
831	>	class PoolCleaner implements AutoCloseable {
832	>	private final ExecutorService pool;
833	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
834	>	public void close() { joinPool(pool); }
835	>	}
836	>
837	>	/**
838	>	* An extension of PoolCleaner that has an action to release the pool.
839	>	*/
840	>	class PoolCleanerWithReleaser extends PoolCleaner {
841	>	private final Runnable releaser;
842	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
843	>	super(pool);
844	>	this.releaser = releaser;
845		}
846	+	public void close() {
847	+	try {
848	+	releaser.run();
849	+	} finally {
850	+	super.close();
851	+	}
852	+	}
853	+	}
854	+
855	+	PoolCleaner cleaner(ExecutorService pool) {
856	+	return new PoolCleaner(pool);
857	+	}
858	+
859	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
860	+	return new PoolCleanerWithReleaser(pool, releaser);
861	+	}
862	+
863	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
864	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
865	+	}
866	+
867	+	Runnable releaser(final CountDownLatch latch) {
868	+	return new Runnable() { public void run() {
869	+	do { latch.countDown(); }
870	+	while (latch.getCount() > 0);
871	+	}};
872		}
873
874		/**
#	Line 745 | Line 877 | public class JSR166TestCase extends Test
877		void joinPool(ExecutorService pool) {
878		try {
879		pool.shutdown();
880	<	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
881	<	fail("ExecutorService " + pool +
882	<	" did not terminate in a timely manner");
880	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
881	>	try {
882	>	threadFail("ExecutorService " + pool +
883	>	" did not terminate in a timely manner");
884	>	} finally {
885	>	// last resort, for the benefit of subsequent tests
886	>	pool.shutdownNow();
887	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
888	>	}
889	>	}
890		} catch (SecurityException ok) {
891		// Allowed in case test doesn't have privs
892		} catch (InterruptedException fail) {
893	<	fail("Unexpected InterruptedException");
893	>	threadFail("Unexpected InterruptedException");
894		}
895		}
896
#	Line 765 | Line 904 | public class JSR166TestCase extends Test
904		*/
905		void testInParallel(Action ... actions) {
906		ExecutorService pool = Executors.newCachedThreadPool();
907	<	try {
907	>	try (PoolCleaner cleaner = cleaner(pool)) {
908		ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
909		for (final Action action : actions)
910		futures.add(pool.submit(new CheckedRunnable() {
#	Line 778 | Line 917 | public class JSR166TestCase extends Test
917		} catch (Exception ex) {
918		threadUnexpectedException(ex);
919		}
781	–	} finally {
782	–	joinPool(pool);
920		}
921		}
922
923		/**
924	<	* A debugging tool to print all stack traces, as jstack does.
924	>	* A debugging tool to print stack traces of most threads, as jstack does.
925	>	* Uninteresting threads are filtered out.
926		*/
927	<	static void printAllStackTraces() {
928	<	for (ThreadInfo info :
929	<	ManagementFactory.getThreadMXBean()
930	<	.dumpAllThreads(true, true))
927	>	static void dumpTestThreads() {
928	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
929	>	System.err.println("------ stacktrace dump start ------");
930	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
931	>	String name = info.getThreadName();
932	>	if ("Signal Dispatcher".equals(name))
933	>	continue;
934	>	if ("Reference Handler".equals(name)
935	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
936	>	continue;
937	>	if ("Finalizer".equals(name)
938	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
939	>	continue;
940	>	if ("checkForWedgedTest".equals(name))
941	>	continue;
942		System.err.print(info);
943	+	}
944	+	System.err.println("------ stacktrace dump end ------");
945		}
946
947		/**
#	Line 810 | Line 961 | public class JSR166TestCase extends Test
961		delay(millis);
962		assertTrue(thread.isAlive());
963		} catch (InterruptedException fail) {
964	<	fail("Unexpected InterruptedException");
964	>	threadFail("Unexpected InterruptedException");
965		}
966		}
967
#	Line 832 | Line 983 | public class JSR166TestCase extends Test
983		for (Thread thread : threads)
984		assertTrue(thread.isAlive());
985		} catch (InterruptedException fail) {
986	<	fail("Unexpected InterruptedException");
986	>	threadFail("Unexpected InterruptedException");
987		}
988		}
989
#	Line 1110 | Line 1261 | public class JSR166TestCase extends Test
1261		} finally {
1262		if (t.getState() != Thread.State.TERMINATED) {
1263		t.interrupt();
1264	<	fail("Test timed out");
1264	>	threadFail("timed out waiting for thread to terminate");
1265		}
1266		}
1267		}
#	Line 1251 | Line 1402 | public class JSR166TestCase extends Test
1402		}};
1403		}
1404
1405	<	public Runnable awaiter(final CountDownLatch latch) {
1405	>	public Runnable countDowner(final CountDownLatch latch) {
1406		return new CheckedRunnable() {
1407		public void realRun() throws InterruptedException {
1408	<	await(latch);
1408	>	latch.countDown();
1409		}};
1410		}
1411
1412	+	class LatchAwaiter extends CheckedRunnable {
1413	+	static final int NEW = 0;
1414	+	static final int RUNNING = 1;
1415	+	static final int DONE = 2;
1416	+	final CountDownLatch latch;
1417	+	int state = NEW;
1418	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1419	+	public void realRun() throws InterruptedException {
1420	+	state = 1;
1421	+	await(latch);
1422	+	state = 2;
1423	+	}
1424	+	}
1425	+
1426	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1427	+	return new LatchAwaiter(latch);
1428	+	}
1429	+
1430		public void await(CountDownLatch latch) {
1431		try {
1432	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1432	>	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1433	>	fail("timed out waiting for CountDownLatch for "
1434	>	+ (LONG_DELAY_MS/1000) + " sec");
1435		} catch (Throwable fail) {
1436		threadUnexpectedException(fail);
1437		}
#	Line 1268 | Line 1439 | public class JSR166TestCase extends Test
1439
1440		public void await(Semaphore semaphore) {
1441		try {
1442	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1442	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1443	>	fail("timed out waiting for Semaphore for "
1444	>	+ (LONG_DELAY_MS/1000) + " sec");
1445		} catch (Throwable fail) {
1446		threadUnexpectedException(fail);
1447		}

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