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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 1.173 by jsr166, Fri Oct 9 16:24:12 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 40 | Line 44 | import java.util.concurrent.CyclicBarrie
44		import java.util.concurrent.ExecutionException;
45		import java.util.concurrent.Executors;
46		import java.util.concurrent.ExecutorService;
47	+	import java.util.concurrent.ForkJoinPool;
48		import java.util.concurrent.Future;
49		import java.util.concurrent.RecursiveAction;
50		import java.util.concurrent.RecursiveTask;
#	Line 49 | 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 185 | 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	>	final int timeoutMinutes = Math.max(runsPerTest / 10, 1);
201	>	for (TestCase lastTestCase = currentTestCase;;) {
202	>	try { MINUTES.sleep(timeoutMinutes); }
203	>	catch (InterruptedException unexpected) { break; }
204	>	if (lastTestCase == currentTestCase) {
205	>	System.err.printf(
206	>	"Looks like we're stuck running test: %s%n",
207	>	lastTestCase);
208	>	//                     System.err.printf(
209	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
210	>	//                         lastTestCase, currentRun, runsPerTest);
211	>	System.err.println("availableProcessors=" +
212	>	Runtime.getRuntime().availableProcessors());
213	>	System.err.printf("cpu model = %s%n", cpuModel());
214	>	dumpTestThreads();
215	>	// one stack dump is probably enough; more would be spam
216	>	break;
217	>	}
218	>	lastTestCase = currentTestCase;
219	>	}}};
220	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
221	>	thread.setDaemon(true);
222	>	thread.start();
223	>	}
224	>
225	>	public static String cpuModel() {
226	>	try {
227	>	Matcher matcher = Pattern.compile("model name\\s*: (.*)")
228	>	.matcher(new String(
229	>	Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
230	>	matcher.find();
231	>	return matcher.group(1);
232	>	} catch (Exception ex) { return null; }
233	>	}
234	>
235	>	public void runBare() throws Throwable {
236	>	currentTestCase = this;
237		if (methodFilter == null
238	<	|| methodFilter.matcher(toString()).find()) {
239	<	for (int i = 0; i < runsPerTest; i++) {
240	<	if (profileTests)
241	<	runTestProfiled();
242	<	else
243	<	super.runTest();
244	<	}
238	>	|| methodFilter.matcher(toString()).find())
239	>	super.runBare();
240	>	}
241	>
242	>	protected void runTest() throws Throwable {
243	>	for (int i = 0; i < runsPerTest; i++) {
244	>	// currentRun = i;
245	>	if (profileTests)
246	>	runTestProfiled();
247	>	else
248	>	super.runTest();
249		}
250		}
251
#	Line 456 | Line 508 | public class JSR166TestCase extends Test
508		} else {
509		return new TestSuite();
510		}
459	–
511		}
512
513		// Delays for timing-dependent tests, in milliseconds.
#	Line 514 | Line 565 | public class JSR166TestCase extends Test
565		* the same test have no effect.
566		*/
567		public void threadRecordFailure(Throwable t) {
568	+	System.err.println(t);
569	+	dumpTestThreads();
570		threadFailure.compareAndSet(null, t);
571		}
572
#	Line 521 | Line 574 | public class JSR166TestCase extends Test
574		setDelays();
575		}
576
577	+	void tearDownFail(String format, Object... args) {
578	+	String msg = toString() + ": " + String.format(format, args);
579	+	System.err.println(msg);
580	+	dumpTestThreads();
581	+	throw new AssertionFailedError(msg);
582	+	}
583	+
584		/**
585		* Extra checks that get done for all test cases.
586		*
#	Line 548 | Line 608 | public class JSR166TestCase extends Test
608		}
609
610		if (Thread.interrupted())
611	<	throw new AssertionFailedError("interrupt status set in main thread");
611	>	tearDownFail("interrupt status set in main thread");
612
613		checkForkJoinPoolThreadLeaks();
614		}
615
616		/**
617	<	* Finds missing try { ... } finally { joinPool(e); }
617	>	* Finds missing PoolCleaners
618		*/
619		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
620	<	Thread[] survivors = new Thread[5];
620	>	Thread[] survivors = new Thread[7];
621		int count = Thread.enumerate(survivors);
622		for (int i = 0; i < count; i++) {
623		Thread thread = survivors[i];
#	Line 565 | Line 625 | public class JSR166TestCase extends Test
625		if (name.startsWith("ForkJoinPool-")) {
626		// give thread some time to terminate
627		thread.join(LONG_DELAY_MS);
628	<	if (!thread.isAlive()) continue;
629	<	throw new AssertionFailedError
630	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
571	<	toString(), name));
628	>	if (thread.isAlive())
629	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
630	>	thread);
631		}
632		}
633	+
634	+	if (!ForkJoinPool.commonPool()
635	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
636	+	tearDownFail("ForkJoin common pool thread stuck");
637		}
638
639		/**
#	Line 583 | Line 646 | public class JSR166TestCase extends Test
646		fail(reason);
647		} catch (AssertionFailedError t) {
648		threadRecordFailure(t);
649	<	fail(reason);
649	>	throw t;
650		}
651		}
652
#	Line 710 | Line 773 | public class JSR166TestCase extends Test
773		/**
774		* Delays, via Thread.sleep, for the given millisecond delay, but
775		* if the sleep is shorter than specified, may re-sleep or yield
776	<	* until time elapses.
776	>	* until time elapses.  Ensures that the given time, as measured
777	>	* by System.nanoTime(), has elapsed.
778		*/
779		static void delay(long millis) throws InterruptedException {
780	<	long startTime = System.nanoTime();
781	<	long ns = millis * 1000 * 1000;
782	<	for (;;) {
780	>	long nanos = millis * (1000 * 1000);
781	>	final long wakeupTime = System.nanoTime() + nanos;
782	>	do {
783		if (millis > 0L)
784		Thread.sleep(millis);
785		else // too short to sleep
786		Thread.yield();
787	<	long d = ns - (System.nanoTime() - startTime);
788	<	if (d > 0L)
789	<	millis = d / (1000 * 1000);
790	<	else
791	<	break;
787	>	nanos = wakeupTime - System.nanoTime();
788	>	millis = nanos / (1000 * 1000);
789	>	} while (nanos >= 0L);
790	>	}
791	>
792	>	/**
793	>	* Allows use of try-with-resources with per-test thread pools.
794	>	*/
795	>	class PoolCleaner implements AutoCloseable {
796	>	private final ExecutorService pool;
797	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
798	>	public void close() { joinPool(pool); }
799	>	}
800	>
801	>	/**
802	>	* An extension of PoolCleaner that has an action to release the pool.
803	>	*/
804	>	class PoolCleanerWithReleaser extends PoolCleaner {
805	>	private final Runnable releaser;
806	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
807	>	super(pool);
808	>	this.releaser = releaser;
809	>	}
810	>	public void close() {
811	>	try {
812	>	releaser.run();
813	>	} finally {
814	>	super.close();
815	>	}
816		}
817		}
818
819	+	PoolCleaner cleaner(ExecutorService pool) {
820	+	return new PoolCleaner(pool);
821	+	}
822	+
823	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
824	+	return new PoolCleanerWithReleaser(pool, releaser);
825	+	}
826	+
827	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
828	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
829	+	}
830	+
831	+	Runnable releaser(final CountDownLatch latch) {
832	+	return new Runnable() { public void run() {
833	+	do { latch.countDown(); }
834	+	while (latch.getCount() > 0);
835	+	}};
836	+	}
837	+
838		/**
839		* Waits out termination of a thread pool or fails doing so.
840		*/
841		void joinPool(ExecutorService pool) {
842		try {
843		pool.shutdown();
844	<	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
845	<	fail("ExecutorService " + pool +
846	<	" did not terminate in a timely manner");
844	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
845	>	try {
846	>	threadFail("ExecutorService " + pool +
847	>	" did not terminate in a timely manner");
848	>	} finally {
849	>	// last resort, for the benefit of subsequent tests
850	>	pool.shutdownNow();
851	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
852	>	}
853	>	}
854		} catch (SecurityException ok) {
855		// Allowed in case test doesn't have privs
856		} catch (InterruptedException fail) {
857	<	fail("Unexpected InterruptedException");
857	>	threadFail("Unexpected InterruptedException");
858		}
859		}
860
#	Line 754 | Line 868 | public class JSR166TestCase extends Test
868		*/
869		void testInParallel(Action ... actions) {
870		ExecutorService pool = Executors.newCachedThreadPool();
871	<	try {
871	>	try (PoolCleaner cleaner = cleaner(pool)) {
872		ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
873		for (final Action action : actions)
874		futures.add(pool.submit(new CheckedRunnable() {
#	Line 767 | Line 881 | public class JSR166TestCase extends Test
881		} catch (Exception ex) {
882		threadUnexpectedException(ex);
883		}
770	–	} finally {
771	–	joinPool(pool);
884		}
885		}
886
887		/**
888	<	* A debugging tool to print all stack traces, as jstack does.
888	>	* A debugging tool to print stack traces of most threads, as jstack does.
889	>	* Uninteresting threads are filtered out.
890		*/
891	<	static void printAllStackTraces() {
892	<	for (ThreadInfo info :
893	<	ManagementFactory.getThreadMXBean()
894	<	.dumpAllThreads(true, true))
891	>	static void dumpTestThreads() {
892	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
893	>	System.err.println("------ stacktrace dump start ------");
894	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
895	>	String name = info.getThreadName();
896	>	if ("Signal Dispatcher".equals(name))
897	>	continue;
898	>	if ("Reference Handler".equals(name)
899	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
900	>	continue;
901	>	if ("Finalizer".equals(name)
902	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
903	>	continue;
904	>	if ("checkForWedgedTest".equals(name))
905	>	continue;
906		System.err.print(info);
907	+	}
908	+	System.err.println("------ stacktrace dump end ------");
909		}
910
911		/**
#	Line 799 | Line 925 | public class JSR166TestCase extends Test
925		delay(millis);
926		assertTrue(thread.isAlive());
927		} catch (InterruptedException fail) {
928	<	fail("Unexpected InterruptedException");
928	>	threadFail("Unexpected InterruptedException");
929		}
930		}
931
#	Line 821 | Line 947 | public class JSR166TestCase extends Test
947		for (Thread thread : threads)
948		assertTrue(thread.isAlive());
949		} catch (InterruptedException fail) {
950	<	fail("Unexpected InterruptedException");
950	>	threadFail("Unexpected InterruptedException");
951		}
952		}
953
#	Line 1099 | Line 1225 | public class JSR166TestCase extends Test
1225		} finally {
1226		if (t.getState() != Thread.State.TERMINATED) {
1227		t.interrupt();
1228	<	fail("Test timed out");
1228	>	threadFail("Test timed out");
1229		}
1230		}
1231		}
#	Line 1240 | Line 1366 | public class JSR166TestCase extends Test
1366		}};
1367		}
1368
1369	<	public Runnable awaiter(final CountDownLatch latch) {
1369	>	public Runnable countDowner(final CountDownLatch latch) {
1370		return new CheckedRunnable() {
1371		public void realRun() throws InterruptedException {
1372	<	await(latch);
1372	>	latch.countDown();
1373		}};
1374		}
1375
1376	+	class LatchAwaiter extends CheckedRunnable {
1377	+	static final int NEW = 0;
1378	+	static final int RUNNING = 1;
1379	+	static final int DONE = 2;
1380	+	final CountDownLatch latch;
1381	+	int state = NEW;
1382	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1383	+	public void realRun() throws InterruptedException {
1384	+	state = 1;
1385	+	await(latch);
1386	+	state = 2;
1387	+	}
1388	+	}
1389	+
1390	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1391	+	return new LatchAwaiter(latch);
1392	+	}
1393	+
1394		public void await(CountDownLatch latch) {
1395		try {
1396		assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));

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