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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 1.175 by jsr166, Sun Oct 11 23:07:44 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 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 186 | Line 191 | public class JSR166TestCase extends Test
191		return (regex == null) ? null : Pattern.compile(regex);
192		}
193
194	<	protected void runTest() throws Throwable {
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	<	for (int i = 0; i < runsPerTest; i++) {
243	<	if (profileTests)
244	<	runTestProfiled();
245	<	else
246	<	super.runTest();
247	<	}
241	>	|| methodFilter.matcher(toString()).find())
242	>	super.runBare();
243	>	}
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
251	>	super.runTest();
252		}
253		}
254
#	Line 457 | Line 511 | public class JSR166TestCase extends Test
511		} else {
512		return new TestSuite();
513		}
460	–
514		}
515
516		// Delays for timing-dependent tests, in milliseconds.
#	Line 515 | Line 568 | public class JSR166TestCase extends Test
568		* the same test have no effect.
569		*/
570		public void threadRecordFailure(Throwable t) {
571	+	System.err.println(t);
572	+	dumpTestThreads();
573		threadFailure.compareAndSet(null, t);
574		}
575
#	Line 525 | 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	<	printAllStackTraces();
583	>	dumpTestThreads();
584		throw new AssertionFailedError(msg);
585		}
586
#	Line 562 | 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 594 | Line 649 | public class JSR166TestCase extends Test
649		fail(reason);
650		} catch (AssertionFailedError t) {
651		threadRecordFailure(t);
652	<	fail(reason);
652	>	throw t;
653		}
654		}
655
#	Line 721 | 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);
793	<	else
794	<	break;
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	>	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		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 765 | Line 871 | public class JSR166TestCase extends Test
871		*/
872		void testInParallel(Action ... actions) {
873		ExecutorService pool = Executors.newCachedThreadPool();
874	<	try {
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 778 | Line 884 | public class JSR166TestCase extends Test
884		} catch (Exception ex) {
885		threadUnexpectedException(ex);
886		}
781	–	} finally {
782	–	joinPool(pool);
887		}
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 printAllStackTraces() {
895	<	for (ThreadInfo info :
896	<	ManagementFactory.getThreadMXBean()
897	<	.dumpAllThreads(true, true))
894	>	static void dumpTestThreads() {
895	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
896	>	System.err.println("------ stacktrace dump start ------");
897	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
898	>	String name = info.getThreadName();
899	>	if ("Signal Dispatcher".equals(name))
900	>	continue;
901	>	if ("Reference Handler".equals(name)
902	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
903	>	continue;
904	>	if ("Finalizer".equals(name)
905	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
906	>	continue;
907	>	if ("checkForWedgedTest".equals(name))
908	>	continue;
909		System.err.print(info);
910	+	}
911	+	System.err.println("------ stacktrace dump end ------");
912		}
913
914		/**
#	Line 810 | 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 832 | 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 1110 | 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("Test timed out");
1232		}
1233		}
1234		}
#	Line 1251 | Line 1369 | public class JSR166TestCase extends Test
1369		}};
1370		}
1371
1372	<	public Runnable awaiter(final CountDownLatch latch) {
1372	>	public Runnable countDowner(final CountDownLatch latch) {
1373		return new CheckedRunnable() {
1374		public void realRun() throws InterruptedException {
1375	<	await(latch);
1375	>	latch.countDown();
1376		}};
1377		}
1378
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));

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