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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.153 by jsr166, Sat Oct 3 19:37:43 2015 UTC vs.
Revision 1.206 by jsr166, Tue Oct 25 01:32:55 2016 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	+	/*
10	+	* @test
11	+	* @summary JSR-166 tck tests
12	+	* @modules java.management
13	+	* @build *
14	+	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
15	+	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
16	+	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 -Djava.util.secureRandomSeed=true JSR166TestCase
17	+	*/
18	+
19		import static java.util.concurrent.TimeUnit.MILLISECONDS;
20	+	import static java.util.concurrent.TimeUnit.MINUTES;
21		import static java.util.concurrent.TimeUnit.NANOSECONDS;
22
23		import java.io.ByteArrayInputStream;
#	Line 19 | Line 30 | import java.lang.management.ThreadMXBean
30		import java.lang.reflect.Constructor;
31		import java.lang.reflect.Method;
32		import java.lang.reflect.Modifier;
33	+	import java.nio.file.Files;
34	+	import java.nio.file.Paths;
35		import java.security.CodeSource;
36		import java.security.Permission;
37		import java.security.PermissionCollection;
#	Line 28 | Line 41 | import java.security.ProtectionDomain;
41		import java.security.SecurityPermission;
42		import java.util.ArrayList;
43		import java.util.Arrays;
44	+	import java.util.Collections;
45		import java.util.Date;
46		import java.util.Enumeration;
47		import java.util.Iterator;
#	Line 47 | Line 61 | import java.util.concurrent.RecursiveAct
61		import java.util.concurrent.RecursiveTask;
62		import java.util.concurrent.RejectedExecutionHandler;
63		import java.util.concurrent.Semaphore;
64	+	import java.util.concurrent.SynchronousQueue;
65		import java.util.concurrent.ThreadFactory;
66	+	import java.util.concurrent.ThreadLocalRandom;
67		import java.util.concurrent.ThreadPoolExecutor;
68		import java.util.concurrent.TimeoutException;
69	+	import java.util.concurrent.atomic.AtomicBoolean;
70		import java.util.concurrent.atomic.AtomicReference;
71	+	import java.util.regex.Matcher;
72		import java.util.regex.Pattern;
73
74		import junit.framework.AssertionFailedError;
#	Line 108 | Line 126 | import junit.framework.TestSuite;
126		* methods as there are exceptions the method can throw. Sometimes
127		* there are multiple tests per JSR166 method when the different
128		* "normal" behaviors differ significantly. And sometimes testcases
129	<	* cover multiple methods when they cannot be tested in
112	<	* isolation.
129	>	* cover multiple methods when they cannot be tested in isolation.
130		*
131		* <li>The documentation style for testcases is to provide as javadoc
132		* a simple sentence or two describing the property that the testcase
#	Line 172 | Line 189 | public class JSR166TestCase extends Test
189		private static final int suiteRuns =
190		Integer.getInteger("jsr166.suiteRuns", 1);
191
192	+	/**
193	+	* Returns the value of the system property, or NaN if not defined.
194	+	*/
195	+	private static float systemPropertyValue(String name) {
196	+	String floatString = System.getProperty(name);
197	+	if (floatString == null)
198	+	return Float.NaN;
199	+	try {
200	+	return Float.parseFloat(floatString);
201	+	} catch (NumberFormatException ex) {
202	+	throw new IllegalArgumentException(
203	+	String.format("Bad float value in system property %s=%s",
204	+	name, floatString));
205	+	}
206	+	}
207	+
208	+	/**
209	+	* The scaling factor to apply to standard delays used in tests.
210	+	* May be initialized from any of:
211	+	* - the "jsr166.delay.factor" system property
212	+	* - the "test.timeout.factor" system property (as used by jtreg)
213	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
214	+	* - hard-coded fuzz factor when using a known slowpoke VM
215	+	*/
216	+	private static final float delayFactor = delayFactor();
217	+
218	+	private static float delayFactor() {
219	+	float x;
220	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
221	+	return x;
222	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
223	+	return x;
224	+	String prop = System.getProperty("java.vm.version");
225	+	if (prop != null && prop.matches(".*debug.*"))
226	+	return 4.0f; // How much slower is fastdebug than product?!
227	+	return 1.0f;
228	+	}
229	+
230		public JSR166TestCase() { super(); }
231		public JSR166TestCase(String name) { super(name); }
232
#	Line 187 | Line 242 | public class JSR166TestCase extends Test
242		return (regex == null) ? null : Pattern.compile(regex);
243		}
244
245	+	// Instrumentation to debug very rare, but very annoying hung test runs.
246	+	static volatile TestCase currentTestCase;
247	+	// static volatile int currentRun = 0;
248	+	static {
249	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
250	+	// Avoid spurious reports with enormous runsPerTest.
251	+	// A single test case run should never take more than 1 second.
252	+	// But let's cap it at the high end too ...
253	+	final int timeoutMinutes =
254	+	Math.min(15, Math.max(runsPerTest / 60, 1));
255	+	for (TestCase lastTestCase = currentTestCase;;) {
256	+	try { MINUTES.sleep(timeoutMinutes); }
257	+	catch (InterruptedException unexpected) { break; }
258	+	if (lastTestCase == currentTestCase) {
259	+	System.err.printf(
260	+	"Looks like we're stuck running test: %s%n",
261	+	lastTestCase);
262	+	//                     System.err.printf(
263	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
264	+	//                         lastTestCase, currentRun, runsPerTest);
265	+	//                     System.err.println("availableProcessors=" +
266	+	//                         Runtime.getRuntime().availableProcessors());
267	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
268	+	dumpTestThreads();
269	+	// one stack dump is probably enough; more would be spam
270	+	break;
271	+	}
272	+	lastTestCase = currentTestCase;
273	+	}}};
274	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
275	+	thread.setDaemon(true);
276	+	thread.start();
277	+	}
278	+
279	+	//     public static String cpuModel() {
280	+	//         try {
281	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
282	+	//                 .matcher(new String(
283	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
284	+	//             matcher.find();
285	+	//             return matcher.group(1);
286	+	//         } catch (Exception ex) { return null; }
287	+	//     }
288	+
289		public void runBare() throws Throwable {
290	+	currentTestCase = this;
291		if (methodFilter == null
292		|| methodFilter.matcher(toString()).find())
293		super.runBare();
#	Line 195 | Line 295 | public class JSR166TestCase extends Test
295
296		protected void runTest() throws Throwable {
297		for (int i = 0; i < runsPerTest; i++) {
298	+	// currentRun = i;
299		if (profileTests)
300		runTestProfiled();
301		else
#	Line 223 | Line 324 | public class JSR166TestCase extends Test
324		main(suite(), args);
325		}
326
327	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
328	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
329	+	long runTime;
330	+	public void startTest(Test test) {}
331	+	protected void printHeader(long runTime) {
332	+	this.runTime = runTime; // defer printing for later
333	+	}
334	+	protected void printFooter(TestResult result) {
335	+	if (result.wasSuccessful()) {
336	+	getWriter().println("OK (" + result.runCount() + " tests)"
337	+	+ "  Time: " + elapsedTimeAsString(runTime));
338	+	} else {
339	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
340	+	super.printFooter(result);
341	+	}
342	+	}
343	+	}
344	+
345	+	/**
346	+	* Returns a TestRunner that doesn't bother with unnecessary
347	+	* fluff, like printing a "." for each test case.
348	+	*/
349	+	static junit.textui.TestRunner newPithyTestRunner() {
350	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
351	+	runner.setPrinter(new PithyResultPrinter(System.out));
352	+	return runner;
353	+	}
354	+
355		/**
356		* Runs all unit tests in the given test suite.
357		* Actual behavior influenced by jsr166.* system properties.
#	Line 234 | Line 363 | public class JSR166TestCase extends Test
363		System.setSecurityManager(new SecurityManager());
364		}
365		for (int i = 0; i < suiteRuns; i++) {
366	<	TestResult result = junit.textui.TestRunner.run(suite);
366	>	TestResult result = newPithyTestRunner().doRun(suite);
367		if (!result.wasSuccessful())
368		System.exit(1);
369		System.gc();
#	Line 318 | Line 447 | public class JSR166TestCase extends Test
447		AbstractQueuedLongSynchronizerTest.suite(),
448		ArrayBlockingQueueTest.suite(),
449		ArrayDequeTest.suite(),
450	+	ArrayListTest.suite(),
451		AtomicBooleanTest.suite(),
452		AtomicIntegerArrayTest.suite(),
453		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 340 | Line 470 | public class JSR166TestCase extends Test
470		CopyOnWriteArrayListTest.suite(),
471		CopyOnWriteArraySetTest.suite(),
472		CountDownLatchTest.suite(),
473	+	CountedCompleterTest.suite(),
474		CyclicBarrierTest.suite(),
475		DelayQueueTest.suite(),
476		EntryTest.suite(),
#	Line 373 | Line 504 | public class JSR166TestCase extends Test
504		// Java8+ test classes
505		if (atLeastJava8()) {
506		String[] java8TestClassNames = {
507	+	"ArrayDeque8Test",
508		"Atomic8Test",
509		"CompletableFutureTest",
510		"ConcurrentHashMap8Test",
511	<	"CountedCompleterTest",
511	>	"CountedCompleter8Test",
512		"DoubleAccumulatorTest",
513		"DoubleAdderTest",
514		"ForkJoinPool8Test",
#	Line 387 | Line 519 | public class JSR166TestCase extends Test
519		"StampedLockTest",
520		"SubmissionPublisherTest",
521		"ThreadLocalRandom8Test",
522	+	"TimeUnit8Test",
523		};
524		addNamedTestClasses(suite, java8TestClassNames);
525		}
#	Line 394 | Line 527 | public class JSR166TestCase extends Test
527		// Java9+ test classes
528		if (atLeastJava9()) {
529		String[] java9TestClassNames = {
530	<	// Currently empty, but expecting varhandle tests
530	>	"AtomicBoolean9Test",
531	>	"AtomicInteger9Test",
532	>	"AtomicIntegerArray9Test",
533	>	"AtomicLong9Test",
534	>	"AtomicLongArray9Test",
535	>	"AtomicReference9Test",
536	>	"AtomicReferenceArray9Test",
537	>	"ExecutorCompletionService9Test",
538		};
539		addNamedTestClasses(suite, java9TestClassNames);
540		}
#	Line 461 | Line 601 | public class JSR166TestCase extends Test
601		} else {
602		return new TestSuite();
603		}
464	–
604		}
605
606		// Delays for timing-dependent tests, in milliseconds.
#	Line 472 | Line 611 | public class JSR166TestCase extends Test
611		public static long LONG_DELAY_MS;
612
613		/**
614	<	* Returns the shortest timed delay. This could
615	<	* be reimplemented to use for example a Property.
614	>	* Returns the shortest timed delay. This can be scaled up for
615	>	* slow machines using the jsr166.delay.factor system property,
616	>	* or via jtreg's -timeoutFactor: flag.
617	>	* http://openjdk.java.net/jtreg/command-help.html
618		*/
619		protected long getShortDelay() {
620	<	return 50;
620	>	return (long) (50 * delayFactor);
621		}
622
623		/**
#	Line 519 | Line 660 | public class JSR166TestCase extends Test
660		* the same test have no effect.
661		*/
662		public void threadRecordFailure(Throwable t) {
663	<	printAllStackTraces();
663	>	System.err.println(t);
664	>	dumpTestThreads();
665		threadFailure.compareAndSet(null, t);
666		}
667
#	Line 530 | Line 672 | public class JSR166TestCase extends Test
672		void tearDownFail(String format, Object... args) {
673		String msg = toString() + ": " + String.format(format, args);
674		System.err.println(msg);
675	<	printAllStackTraces();
675	>	dumpTestThreads();
676		throw new AssertionFailedError(msg);
677		}
678
#	Line 567 | Line 709 | public class JSR166TestCase extends Test
709		}
710
711		/**
712	<	* Finds missing try { ... } finally { joinPool(e); }
712	>	* Finds missing PoolCleaners
713		*/
714		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
715		Thread[] survivors = new Thread[7];
#	Line 726 | Line 868 | public class JSR166TestCase extends Test
868		/**
869		* Delays, via Thread.sleep, for the given millisecond delay, but
870		* if the sleep is shorter than specified, may re-sleep or yield
871	<	* until time elapses.
871	>	* until time elapses.  Ensures that the given time, as measured
872	>	* by System.nanoTime(), has elapsed.
873		*/
874		static void delay(long millis) throws InterruptedException {
875	<	long startTime = System.nanoTime();
876	<	long ns = millis * 1000 * 1000;
877	<	for (;;) {
875	>	long nanos = millis * (1000 * 1000);
876	>	final long wakeupTime = System.nanoTime() + nanos;
877	>	do {
878		if (millis > 0L)
879		Thread.sleep(millis);
880		else // too short to sleep
881		Thread.yield();
882	<	long d = ns - (System.nanoTime() - startTime);
883	<	if (d > 0L)
884	<	millis = d / (1000 * 1000);
742	<	else
743	<	break;
744	<	}
882	>	nanos = wakeupTime - System.nanoTime();
883	>	millis = nanos / (1000 * 1000);
884	>	} while (nanos >= 0L);
885		}
886
887		/**
888		* Allows use of try-with-resources with per-test thread pools.
889		*/
890	<	static class PoolCloser<T extends ExecutorService>
891	<	implements AutoCloseable {
892	<	public final T pool;
753	<	public PoolCloser(T pool) { this.pool = pool; }
890	>	class PoolCleaner implements AutoCloseable {
891	>	private final ExecutorService pool;
892	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
893		public void close() { joinPool(pool); }
894		}
895
896		/**
897	+	* An extension of PoolCleaner that has an action to release the pool.
898	+	*/
899	+	class PoolCleanerWithReleaser extends PoolCleaner {
900	+	private final Runnable releaser;
901	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
902	+	super(pool);
903	+	this.releaser = releaser;
904	+	}
905	+	public void close() {
906	+	try {
907	+	releaser.run();
908	+	} finally {
909	+	super.close();
910	+	}
911	+	}
912	+	}
913	+
914	+	PoolCleaner cleaner(ExecutorService pool) {
915	+	return new PoolCleaner(pool);
916	+	}
917	+
918	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
919	+	return new PoolCleanerWithReleaser(pool, releaser);
920	+	}
921	+
922	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
923	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
924	+	}
925	+
926	+	Runnable releaser(final CountDownLatch latch) {
927	+	return new Runnable() { public void run() {
928	+	do { latch.countDown(); }
929	+	while (latch.getCount() > 0);
930	+	}};
931	+	}
932	+
933	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
934	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
935	+	}
936	+
937	+	Runnable releaser(final AtomicBoolean flag) {
938	+	return new Runnable() { public void run() { flag.set(true); }};
939	+	}
940	+
941	+	/**
942		* Waits out termination of a thread pool or fails doing so.
943		*/
944	<	static void joinPool(ExecutorService pool) {
944	>	void joinPool(ExecutorService pool) {
945		try {
946		pool.shutdown();
947	<	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
948	<	fail("ExecutorService " + pool +
949	<	" did not terminate in a timely manner");
947	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
948	>	try {
949	>	threadFail("ExecutorService " + pool +
950	>	" did not terminate in a timely manner");
951	>	} finally {
952	>	// last resort, for the benefit of subsequent tests
953	>	pool.shutdownNow();
954	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
955	>	}
956	>	}
957		} catch (SecurityException ok) {
958		// Allowed in case test doesn't have privs
959		} catch (InterruptedException fail) {
960	<	fail("Unexpected InterruptedException");
960	>	threadFail("Unexpected InterruptedException");
961		}
962		}
963
964	<	/** Like Runnable, but with the freedom to throw anything */
964	>	/**
965	>	* Like Runnable, but with the freedom to throw anything.
966	>	* junit folks had the same idea:
967	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
968	>	*/
969		interface Action { public void run() throws Throwable; }
970
971		/**
#	Line 779 | Line 974 | public class JSR166TestCase extends Test
974		* necessarily individually slow because they must block.
975		*/
976		void testInParallel(Action ... actions) {
977	<	try (PoolCloser<ExecutorService> poolCloser
978	<	= new PoolCloser<>(Executors.newCachedThreadPool())) {
784	<	ExecutorService pool = poolCloser.pool;
977	>	ExecutorService pool = Executors.newCachedThreadPool();
978	>	try (PoolCleaner cleaner = cleaner(pool)) {
979		ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
980		for (final Action action : actions)
981		futures.add(pool.submit(new CheckedRunnable() {
#	Line 798 | Line 992 | public class JSR166TestCase extends Test
992		}
993
994		/**
995	<	* A debugging tool to print all stack traces, as jstack does.
995	>	* A debugging tool to print stack traces of most threads, as jstack does.
996		* Uninteresting threads are filtered out.
997		*/
998	<	static void printAllStackTraces() {
998	>	static void dumpTestThreads() {
999	>	SecurityManager sm = System.getSecurityManager();
1000	>	if (sm != null) {
1001	>	try {
1002	>	System.setSecurityManager(null);
1003	>	} catch (SecurityException giveUp) {
1004	>	return;
1005	>	}
1006	>	}
1007	>
1008		ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1009		System.err.println("------ stacktrace dump start ------");
1010		for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1011	<	String name = info.getThreadName();
1011	>	final String name = info.getThreadName();
1012	>	String lockName;
1013		if ("Signal Dispatcher".equals(name))
1014		continue;
1015		if ("Reference Handler".equals(name)
1016	<	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
1016	>	&& (lockName = info.getLockName()) != null
1017	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1018		continue;
1019		if ("Finalizer".equals(name)
1020	<	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
1020	>	&& (lockName = info.getLockName()) != null
1021	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1022	>	continue;
1023	>	if ("checkForWedgedTest".equals(name))
1024		continue;
1025		System.err.print(info);
1026		}
1027		System.err.println("------ stacktrace dump end ------");
1028	+
1029	+	if (sm != null) System.setSecurityManager(sm);
1030		}
1031
1032		/**
#	Line 836 | Line 1046 | public class JSR166TestCase extends Test
1046		delay(millis);
1047		assertTrue(thread.isAlive());
1048		} catch (InterruptedException fail) {
1049	<	fail("Unexpected InterruptedException");
1049	>	threadFail("Unexpected InterruptedException");
1050		}
1051		}
1052
#	Line 858 | Line 1068 | public class JSR166TestCase extends Test
1068		for (Thread thread : threads)
1069		assertTrue(thread.isAlive());
1070		} catch (InterruptedException fail) {
1071	<	fail("Unexpected InterruptedException");
1071	>	threadFail("Unexpected InterruptedException");
1072		}
1073		}
1074
#	Line 1033 | Line 1243 | public class JSR166TestCase extends Test
1243		* Sleeps until the given time has elapsed.
1244		* Throws AssertionFailedError if interrupted.
1245		*/
1246	<	void sleep(long millis) {
1246	>	static void sleep(long millis) {
1247		try {
1248		delay(millis);
1249		} catch (InterruptedException fail) {
#	Line 1049 | Line 1259 | public class JSR166TestCase extends Test
1259		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1260		*/
1261		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1262	<	long startTime = System.nanoTime();
1262	>	long startTime = 0L;
1263		for (;;) {
1264		Thread.State s = thread.getState();
1265		if (s == Thread.State.BLOCKED ||
#	Line 1058 | Line 1268 | public class JSR166TestCase extends Test
1268		return;
1269		else if (s == Thread.State.TERMINATED)
1270		fail("Unexpected thread termination");
1271	+	else if (startTime == 0L)
1272	+	startTime = System.nanoTime();
1273		else if (millisElapsedSince(startTime) > timeoutMillis) {
1274		threadAssertTrue(thread.isAlive());
1275		return;
#	Line 1136 | Line 1348 | public class JSR166TestCase extends Test
1348		} finally {
1349		if (t.getState() != Thread.State.TERMINATED) {
1350		t.interrupt();
1351	<	fail("Test timed out");
1351	>	threadFail("timed out waiting for thread to terminate");
1352		}
1353		}
1354		}
#	Line 1284 | Line 1496 | public class JSR166TestCase extends Test
1496		}};
1497		}
1498
1499	<	public Runnable awaiter(final CountDownLatch latch) {
1500	<	return new CheckedRunnable() {
1501	<	public void realRun() throws InterruptedException {
1502	<	await(latch);
1503	<	}};
1499	>	class LatchAwaiter extends CheckedRunnable {
1500	>	static final int NEW = 0;
1501	>	static final int RUNNING = 1;
1502	>	static final int DONE = 2;
1503	>	final CountDownLatch latch;
1504	>	int state = NEW;
1505	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1506	>	public void realRun() throws InterruptedException {
1507	>	state = 1;
1508	>	await(latch);
1509	>	state = 2;
1510	>	}
1511		}
1512
1513	<	public void await(CountDownLatch latch) {
1513	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1514	>	return new LatchAwaiter(latch);
1515	>	}
1516	>
1517	>	public void await(CountDownLatch latch, long timeoutMillis) {
1518		try {
1519	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1519	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1520	>	fail("timed out waiting for CountDownLatch for "
1521	>	+ (timeoutMillis/1000) + " sec");
1522		} catch (Throwable fail) {
1523		threadUnexpectedException(fail);
1524		}
1525		}
1526
1527	+	public void await(CountDownLatch latch) {
1528	+	await(latch, LONG_DELAY_MS);
1529	+	}
1530	+
1531		public void await(Semaphore semaphore) {
1532		try {
1533	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1533	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1534	>	fail("timed out waiting for Semaphore for "
1535	>	+ (LONG_DELAY_MS/1000) + " sec");
1536		} catch (Throwable fail) {
1537		threadUnexpectedException(fail);
1538		}
#	Line 1531 | Line 1762 | public class JSR166TestCase extends Test
1762		* A CyclicBarrier that uses timed await and fails with
1763		* AssertionFailedErrors instead of throwing checked exceptions.
1764		*/
1765	<	public class CheckedBarrier extends CyclicBarrier {
1765	>	public static class CheckedBarrier extends CyclicBarrier {
1766		public CheckedBarrier(int parties) { super(parties); }
1767
1768		public int await() {
#	Line 1637 | Line 1868 | public class JSR166TestCase extends Test
1868		} catch (NoSuchElementException success) {}
1869		assertFalse(it.hasNext());
1870		}
1871	+
1872	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1873	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1874	+	}
1875	+
1876	+	public Runnable runnableThrowing(final RuntimeException ex) {
1877	+	return new Runnable() { public void run() { throw ex; }};
1878	+	}
1879	+
1880	+	/** A reusable thread pool to be shared by tests. */
1881	+	static final ExecutorService cachedThreadPool =
1882	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1883	+	1000L, MILLISECONDS,
1884	+	new SynchronousQueue<Runnable>());
1885	+
1886	+	static <T> void shuffle(T[] array) {
1887	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1888	+	}
1889		}

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