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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.155 by jsr166, Sat Oct 3 19:59:49 2015 UTC vs.
Revision 1.177 by jsr166, Mon Oct 12 23:52:44 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 19 | Line 20 | 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 51 | 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 187 | Line 191 | public class JSR166TestCase extends Test
191		return (regex == null) ? null : Pattern.compile(regex);
192		}
193
194	+	// Instrumentation to debug very rare, but very annoying hung test runs.
195	+	static volatile TestCase currentTestCase;
196	+	// static volatile int currentRun = 0;
197	+	static {
198	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
199	+	// Avoid spurious reports with enormous runsPerTest.
200	+	// A single test case run should never take more than 1 second.
201	+	// But let's cap it at the high end too ...
202	+	final int timeoutMinutes =
203	+	Math.min(15, Math.max(runsPerTest / 60, 1));
204	+	for (TestCase lastTestCase = currentTestCase;;) {
205	+	try { MINUTES.sleep(timeoutMinutes); }
206	+	catch (InterruptedException unexpected) { break; }
207	+	if (lastTestCase == currentTestCase) {
208	+	System.err.printf(
209	+	"Looks like we're stuck running test: %s%n",
210	+	lastTestCase);
211	+	//                     System.err.printf(
212	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
213	+	//                         lastTestCase, currentRun, runsPerTest);
214	+	//                     System.err.println("availableProcessors=" +
215	+	//                         Runtime.getRuntime().availableProcessors());
216	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
217	+	dumpTestThreads();
218	+	// one stack dump is probably enough; more would be spam
219	+	break;
220	+	}
221	+	lastTestCase = currentTestCase;
222	+	}}};
223	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
224	+	thread.setDaemon(true);
225	+	thread.start();
226	+	}
227	+
228	+	//     public static String cpuModel() {
229	+	//         try {
230	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
231	+	//                 .matcher(new String(
232	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
233	+	//             matcher.find();
234	+	//             return matcher.group(1);
235	+	//         } catch (Exception ex) { return null; }
236	+	//     }
237	+
238		public void runBare() throws Throwable {
239	+	currentTestCase = this;
240		if (methodFilter == null
241		|| methodFilter.matcher(toString()).find())
242		super.runBare();
#	Line 195 | Line 244 | public class JSR166TestCase extends Test
244
245		protected void runTest() throws Throwable {
246		for (int i = 0; i < runsPerTest; i++) {
247	+	// currentRun = i;
248		if (profileTests)
249		runTestProfiled();
250		else
#	Line 518 | Line 568 | public class JSR166TestCase extends Test
568		* the same test have no effect.
569		*/
570		public void threadRecordFailure(Throwable t) {
571	<	threadDump();
571	>	System.err.println(t);
572	>	dumpTestThreads();
573		threadFailure.compareAndSet(null, t);
574		}
575
#	Line 529 | Line 580 | public class JSR166TestCase extends Test
580		void tearDownFail(String format, Object... args) {
581		String msg = toString() + ": " + String.format(format, args);
582		System.err.println(msg);
583	<	threadDump();
583	>	dumpTestThreads();
584		throw new AssertionFailedError(msg);
585		}
586
#	Line 566 | Line 617 | public class JSR166TestCase extends Test
617		}
618
619		/**
620	<	* Finds missing try { ... } finally { joinPool(e); }
620	>	* Finds missing PoolCleaners
621		*/
622		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
623		Thread[] survivors = new Thread[7];
#	Line 725 | Line 776 | public class JSR166TestCase extends Test
776		/**
777		* Delays, via Thread.sleep, for the given millisecond delay, but
778		* if the sleep is shorter than specified, may re-sleep or yield
779	<	* until time elapses.
779	>	* until time elapses.  Ensures that the given time, as measured
780	>	* by System.nanoTime(), has elapsed.
781		*/
782		static void delay(long millis) throws InterruptedException {
783	<	long startTime = System.nanoTime();
784	<	long ns = millis * 1000 * 1000;
785	<	for (;;) {
783	>	long nanos = millis * (1000 * 1000);
784	>	final long wakeupTime = System.nanoTime() + nanos;
785	>	do {
786		if (millis > 0L)
787		Thread.sleep(millis);
788		else // too short to sleep
789		Thread.yield();
790	<	long d = ns - (System.nanoTime() - startTime);
791	<	if (d > 0L)
792	<	millis = d / (1000 * 1000);
741	<	else
742	<	break;
743	<	}
790	>	nanos = wakeupTime - System.nanoTime();
791	>	millis = nanos / (1000 * 1000);
792	>	} while (nanos >= 0L);
793		}
794
795		/**
796		* Allows use of try-with-resources with per-test thread pools.
797		*/
798	<	static class PoolCloser<T extends ExecutorService>
799	<	implements AutoCloseable {
800	<	public final T pool;
752	<	public PoolCloser(T pool) { this.pool = pool; }
798	>	class PoolCleaner implements AutoCloseable {
799	>	private final ExecutorService pool;
800	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
801		public void close() { joinPool(pool); }
802		}
803
804		/**
805	+	* An extension of PoolCleaner that has an action to release the pool.
806	+	*/
807	+	class PoolCleanerWithReleaser extends PoolCleaner {
808	+	private final Runnable releaser;
809	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
810	+	super(pool);
811	+	this.releaser = releaser;
812	+	}
813	+	public void close() {
814	+	try {
815	+	releaser.run();
816	+	} finally {
817	+	super.close();
818	+	}
819	+	}
820	+	}
821	+
822	+	PoolCleaner cleaner(ExecutorService pool) {
823	+	return new PoolCleaner(pool);
824	+	}
825	+
826	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
827	+	return new PoolCleanerWithReleaser(pool, releaser);
828	+	}
829	+
830	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
831	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
832	+	}
833	+
834	+	Runnable releaser(final CountDownLatch latch) {
835	+	return new Runnable() { public void run() {
836	+	do { latch.countDown(); }
837	+	while (latch.getCount() > 0);
838	+	}};
839	+	}
840	+
841	+	/**
842		* Waits out termination of a thread pool or fails doing so.
843		*/
844	<	static void joinPool(ExecutorService pool) {
844	>	void joinPool(ExecutorService pool) {
845		try {
846		pool.shutdown();
847	<	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
848	<	fail("ExecutorService " + pool +
849	<	" did not terminate in a timely manner");
847	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
848	>	try {
849	>	threadFail("ExecutorService " + pool +
850	>	" did not terminate in a timely manner");
851	>	} finally {
852	>	// last resort, for the benefit of subsequent tests
853	>	pool.shutdownNow();
854	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
855	>	}
856	>	}
857		} catch (SecurityException ok) {
858		// Allowed in case test doesn't have privs
859		} catch (InterruptedException fail) {
860	<	fail("Unexpected InterruptedException");
860	>	threadFail("Unexpected InterruptedException");
861		}
862		}
863
#	Line 778 | Line 870 | public class JSR166TestCase extends Test
870		* necessarily individually slow because they must block.
871		*/
872		void testInParallel(Action ... actions) {
873	<	try (PoolCloser<ExecutorService> poolCloser
874	<	= new PoolCloser<>(Executors.newCachedThreadPool())) {
783	<	ExecutorService pool = poolCloser.pool;
873	>	ExecutorService pool = Executors.newCachedThreadPool();
874	>	try (PoolCleaner cleaner = cleaner(pool)) {
875		ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
876		for (final Action action : actions)
877		futures.add(pool.submit(new CheckedRunnable() {
#	Line 797 | Line 888 | public class JSR166TestCase extends Test
888		}
889
890		/**
891	<	* A debugging tool to print all stack traces, as jstack does.
891	>	* A debugging tool to print stack traces of most threads, as jstack does.
892		* Uninteresting threads are filtered out.
893		*/
894	<	static void threadDump() {
894	>	static void dumpTestThreads() {
895		ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
896		System.err.println("------ stacktrace dump start ------");
897		for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
#	Line 813 | Line 904 | public class JSR166TestCase extends Test
904		if ("Finalizer".equals(name)
905		&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
906		continue;
907	+	if ("checkForWedgedTest".equals(name))
908	+	continue;
909		System.err.print(info);
910		}
911		System.err.println("------ stacktrace dump end ------");
#	Line 835 | Line 928 | public class JSR166TestCase extends Test
928		delay(millis);
929		assertTrue(thread.isAlive());
930		} catch (InterruptedException fail) {
931	<	fail("Unexpected InterruptedException");
931	>	threadFail("Unexpected InterruptedException");
932		}
933		}
934
#	Line 857 | Line 950 | public class JSR166TestCase extends Test
950		for (Thread thread : threads)
951		assertTrue(thread.isAlive());
952		} catch (InterruptedException fail) {
953	<	fail("Unexpected InterruptedException");
953	>	threadFail("Unexpected InterruptedException");
954		}
955		}
956
#	Line 1135 | Line 1228 | public class JSR166TestCase extends Test
1228		} finally {
1229		if (t.getState() != Thread.State.TERMINATED) {
1230		t.interrupt();
1231	<	fail("Test timed out");
1231	>	threadFail("timed out waiting for thread to terminate");
1232		}
1233		}
1234		}
#	Line 1283 | Line 1376 | public class JSR166TestCase extends Test
1376		}};
1377		}
1378
1379	<	public Runnable awaiter(final CountDownLatch latch) {
1380	<	return new CheckedRunnable() {
1381	<	public void realRun() throws InterruptedException {
1382	<	await(latch);
1383	<	}};
1379	>	class LatchAwaiter extends CheckedRunnable {
1380	>	static final int NEW = 0;
1381	>	static final int RUNNING = 1;
1382	>	static final int DONE = 2;
1383	>	final CountDownLatch latch;
1384	>	int state = NEW;
1385	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1386	>	public void realRun() throws InterruptedException {
1387	>	state = 1;
1388	>	await(latch);
1389	>	state = 2;
1390	>	}
1391	>	}
1392	>
1393	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1394	>	return new LatchAwaiter(latch);
1395		}
1396
1397		public void await(CountDownLatch latch) {
1398		try {
1399	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1399	>	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1400	>	fail("timed out waiting for CountDownLatch for "
1401	>	+ (LONG_DELAY_MS/1000) + " sec");
1402		} catch (Throwable fail) {
1403		threadUnexpectedException(fail);
1404		}
#	Line 1300 | Line 1406 | public class JSR166TestCase extends Test
1406
1407		public void await(Semaphore semaphore) {
1408		try {
1409	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1409	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1410	>	fail("timed out waiting for Semaphore for "
1411	>	+ (LONG_DELAY_MS/1000) + " sec");
1412		} catch (Throwable fail) {
1413		threadUnexpectedException(fail);
1414		}

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