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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.190 by jsr166, Sat Mar 26 06:58:47 2016 UTC vs.
Revision 1.237 by jsr166, Wed Aug 23 05:33:00 2017 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by Doug Lea with assistance from members of JCP JSR-166
3	<	* Expert Group and released to the public domain, as explained at
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		* Other contributors include Andrew Wright, Jeffrey Hayes,
7		* Pat Fisher, Mike Judd.
#	Line 8 | Line 9
9
10		/*
11		* @test
12	<	* @summary JSR-166 tck tests
13	<	* @modules java.management
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15		* @build *
16	<	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41		*/
42
43		import static java.util.concurrent.TimeUnit.MILLISECONDS;
#	Line 28 | Line 54 | import java.lang.management.ThreadMXBean
54		import java.lang.reflect.Constructor;
55		import java.lang.reflect.Method;
56		import java.lang.reflect.Modifier;
31	–	import java.nio.file.Files;
32	–	import java.nio.file.Paths;
57		import java.security.CodeSource;
58		import java.security.Permission;
59		import java.security.PermissionCollection;
#	Line 39 | Line 63 | import java.security.ProtectionDomain;
63		import java.security.SecurityPermission;
64		import java.util.ArrayList;
65		import java.util.Arrays;
66	+	import java.util.Collection;
67	+	import java.util.Collections;
68		import java.util.Date;
69		import java.util.Enumeration;
70		import java.util.Iterator;
#	Line 50 | Line 76 | import java.util.concurrent.Callable;
76		import java.util.concurrent.CountDownLatch;
77		import java.util.concurrent.CyclicBarrier;
78		import java.util.concurrent.ExecutionException;
79	+	import java.util.concurrent.Executor;
80		import java.util.concurrent.Executors;
81		import java.util.concurrent.ExecutorService;
82		import java.util.concurrent.ForkJoinPool;
83		import java.util.concurrent.Future;
84	+	import java.util.concurrent.FutureTask;
85		import java.util.concurrent.RecursiveAction;
86		import java.util.concurrent.RecursiveTask;
87	+	import java.util.concurrent.RejectedExecutionException;
88		import java.util.concurrent.RejectedExecutionHandler;
89		import java.util.concurrent.Semaphore;
90	+	import java.util.concurrent.ScheduledExecutorService;
91	+	import java.util.concurrent.ScheduledFuture;
92	+	import java.util.concurrent.SynchronousQueue;
93		import java.util.concurrent.ThreadFactory;
94	+	import java.util.concurrent.ThreadLocalRandom;
95		import java.util.concurrent.ThreadPoolExecutor;
96	+	import java.util.concurrent.TimeUnit;
97		import java.util.concurrent.TimeoutException;
98		import java.util.concurrent.atomic.AtomicBoolean;
99		import java.util.concurrent.atomic.AtomicReference;
66	–	import java.util.regex.Matcher;
100		import java.util.regex.Pattern;
101
102		import junit.framework.AssertionFailedError;
#	Line 273 | Line 306 | public class JSR166TestCase extends Test
306
307		//     public static String cpuModel() {
308		//         try {
309	<	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
309	>	//             java.util.regex.Matcher matcher
310	>	//               = Pattern.compile("model name\\s*: (.*)")
311		//                 .matcher(new String(
312	<	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
312	>	//                     java.nio.file.Files.readAllBytes(
313	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
314		//             matcher.find();
315		//             return matcher.group(1);
316		//         } catch (Exception ex) { return null; }
#	Line 442 | Line 477 | public class JSR166TestCase extends Test
477		AbstractQueuedLongSynchronizerTest.suite(),
478		ArrayBlockingQueueTest.suite(),
479		ArrayDequeTest.suite(),
480	+	ArrayListTest.suite(),
481		AtomicBooleanTest.suite(),
482		AtomicIntegerArrayTest.suite(),
483		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 464 | Line 500 | public class JSR166TestCase extends Test
500		CopyOnWriteArrayListTest.suite(),
501		CopyOnWriteArraySetTest.suite(),
502		CountDownLatchTest.suite(),
503	+	CountedCompleterTest.suite(),
504		CyclicBarrierTest.suite(),
505		DelayQueueTest.suite(),
506		EntryTest.suite(),
#	Line 492 | Line 529 | public class JSR166TestCase extends Test
529		TreeMapTest.suite(),
530		TreeSetTest.suite(),
531		TreeSubMapTest.suite(),
532	<	TreeSubSetTest.suite());
532	>	TreeSubSetTest.suite(),
533	>	VectorTest.suite());
534
535		// Java8+ test classes
536		if (atLeastJava8()) {
537		String[] java8TestClassNames = {
538	+	"ArrayDeque8Test",
539		"Atomic8Test",
540		"CompletableFutureTest",
541		"ConcurrentHashMap8Test",
542	<	"CountedCompleterTest",
542	>	"CountedCompleter8Test",
543		"DoubleAccumulatorTest",
544		"DoubleAdderTest",
545		"ForkJoinPool8Test",
546		"ForkJoinTask8Test",
547	+	"HashMapTest",
548	+	"LinkedBlockingDeque8Test",
549	+	"LinkedBlockingQueue8Test",
550		"LongAccumulatorTest",
551		"LongAdderTest",
552		"SplittableRandomTest",
#	Line 519 | Line 561 | public class JSR166TestCase extends Test
561		// Java9+ test classes
562		if (atLeastJava9()) {
563		String[] java9TestClassNames = {
564	<	// Currently empty, but expecting varhandle tests
564	>	"AtomicBoolean9Test",
565	>	"AtomicInteger9Test",
566	>	"AtomicIntegerArray9Test",
567	>	"AtomicLong9Test",
568	>	"AtomicLongArray9Test",
569	>	"AtomicReference9Test",
570	>	"AtomicReferenceArray9Test",
571	>	"ExecutorCompletionService9Test",
572	>	"ForkJoinPool9Test",
573		};
574		addNamedTestClasses(suite, java9TestClassNames);
575		}
#	Line 530 | Line 580 | public class JSR166TestCase extends Test
580		/** Returns list of junit-style test method names in given class. */
581		public static ArrayList<String> testMethodNames(Class<?> testClass) {
582		Method[] methods = testClass.getDeclaredMethods();
583	<	ArrayList<String> names = new ArrayList<String>(methods.length);
583	>	ArrayList<String> names = new ArrayList<>(methods.length);
584		for (Method method : methods) {
585		if (method.getName().startsWith("test")
586		&& Modifier.isPublic(method.getModifiers())
#	Line 595 | Line 645 | public class JSR166TestCase extends Test
645		public static long MEDIUM_DELAY_MS;
646		public static long LONG_DELAY_MS;
647
648	+	private static final long RANDOM_TIMEOUT;
649	+	private static final long RANDOM_EXPIRED_TIMEOUT;
650	+	private static final TimeUnit RANDOM_TIMEUNIT;
651	+	static {
652	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
653	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
654	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
655	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
656	+	TimeUnit[] timeUnits = TimeUnit.values();
657	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
658	+	}
659	+
660	+	/**
661	+	* Returns a timeout for use when any value at all will do.
662	+	*/
663	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
664	+
665	+	/**
666	+	* Returns a timeout that means "no waiting", i.e. not positive.
667	+	*/
668	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
669	+
670	+	/**
671	+	* Returns a random non-null TimeUnit.
672	+	*/
673	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
674	+
675		/**
676		* Returns the shortest timed delay. This can be scaled up for
677		* slow machines using the jsr166.delay.factor system property,
#	Line 615 | Line 692 | public class JSR166TestCase extends Test
692		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
693		}
694
695	+	private static final long TIMEOUT_DELAY_MS
696	+	= (long) (12.0 * Math.cbrt(delayFactor));
697	+
698		/**
699	<	* Returns a timeout in milliseconds to be used in tests that
700	<	* verify that operations block or time out.
699	>	* Returns a timeout in milliseconds to be used in tests that verify
700	>	* that operations block or time out.  We want this to be longer
701	>	* than the OS scheduling quantum, but not too long, so don't scale
702	>	* linearly with delayFactor; we use "crazy" cube root instead.
703		*/
704	<	long timeoutMillis() {
705	<	return SHORT_DELAY_MS / 4;
704	>	static long timeoutMillis() {
705	>	return TIMEOUT_DELAY_MS;
706		}
707
708		/**
#	Line 636 | Line 718 | public class JSR166TestCase extends Test
718		* The first exception encountered if any threadAssertXXX method fails.
719		*/
720		private final AtomicReference<Throwable> threadFailure
721	<	= new AtomicReference<Throwable>(null);
721	>	= new AtomicReference<>(null);
722
723		/**
724		* Records an exception so that it can be rethrown later in the test
#	Line 946 | Line 1028 | public class JSR166TestCase extends Test
1028		}
1029		}
1030
1031	<	/** Like Runnable, but with the freedom to throw anything */
1031	>	/**
1032	>	* Like Runnable, but with the freedom to throw anything.
1033	>	* junit folks had the same idea:
1034	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1035	>	*/
1036		interface Action { public void run() throws Throwable; }
1037
1038		/**
#	Line 977 | Line 1063 | public class JSR166TestCase extends Test
1063		* Uninteresting threads are filtered out.
1064		*/
1065		static void dumpTestThreads() {
1066	+	SecurityManager sm = System.getSecurityManager();
1067	+	if (sm != null) {
1068	+	try {
1069	+	System.setSecurityManager(null);
1070	+	} catch (SecurityException giveUp) {
1071	+	return;
1072	+	}
1073	+	}
1074	+
1075		ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1076		System.err.println("------ stacktrace dump start ------");
1077		for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1078	<	String name = info.getThreadName();
1078	>	final String name = info.getThreadName();
1079	>	String lockName;
1080		if ("Signal Dispatcher".equals(name))
1081		continue;
1082		if ("Reference Handler".equals(name)
1083	<	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
1083	>	&& (lockName = info.getLockName()) != null
1084	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1085		continue;
1086		if ("Finalizer".equals(name)
1087	<	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
1087	>	&& (lockName = info.getLockName()) != null
1088	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1089		continue;
1090		if ("checkForWedgedTest".equals(name))
1091		continue;
1092		System.err.print(info);
1093		}
1094		System.err.println("------ stacktrace dump end ------");
997	–	}
1095
1096	<	/**
1000	<	* Checks that thread does not terminate within the default
1001	<	* millisecond delay of {@code timeoutMillis()}.
1002	<	*/
1003	<	void assertThreadStaysAlive(Thread thread) {
1004	<	assertThreadStaysAlive(thread, timeoutMillis());
1096	>	if (sm != null) System.setSecurityManager(sm);
1097		}
1098
1099		/**
1100	<	* Checks that thread does not terminate within the given millisecond delay.
1100	>	* Checks that thread eventually enters the expected blocked thread state.
1101		*/
1102	<	void assertThreadStaysAlive(Thread thread, long millis) {
1103	<	try {
1104	<	// No need to optimize the failing case via Thread.join.
1105	<	delay(millis);
1106	<	assertTrue(thread.isAlive());
1107	<	} catch (InterruptedException fail) {
1108	<	threadFail("Unexpected InterruptedException");
1109	<	}
1110	<	}
1111	<
1112	<	/**
1113	<	* Checks that the threads do not terminate within the default
1114	<	* millisecond delay of {@code timeoutMillis()}.
1023	<	*/
1024	<	void assertThreadsStayAlive(Thread... threads) {
1025	<	assertThreadsStayAlive(timeoutMillis(), threads);
1026	<	}
1027	<
1028	<	/**
1029	<	* Checks that the threads do not terminate within the given millisecond delay.
1030	<	*/
1031	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1032	<	try {
1033	<	// No need to optimize the failing case via Thread.join.
1034	<	delay(millis);
1035	<	for (Thread thread : threads)
1036	<	assertTrue(thread.isAlive());
1037	<	} catch (InterruptedException fail) {
1038	<	threadFail("Unexpected InterruptedException");
1102	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1103	>	// always sleep at least 1 ms, with high probability avoiding
1104	>	// transitory states
1105	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1106	>	try { delay(1); }
1107	>	catch (InterruptedException fail) {
1108	>	fail("Unexpected InterruptedException");
1109	>	}
1110	>	Thread.State s = thread.getState();
1111	>	if (s == expected)
1112	>	return;
1113	>	else if (s == Thread.State.TERMINATED)
1114	>	fail("Unexpected thread termination");
1115		}
1116	+	fail("timed out waiting for thread to enter thread state " + expected);
1117		}
1118
1119		/**
#	Line 1077 | Line 1154 | public class JSR166TestCase extends Test
1154		}
1155
1156		/**
1157	+	* The maximum number of consecutive spurious wakeups we should
1158	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1159	+	*/
1160	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1161	+
1162	+	/**
1163		* The number of elements to place in collections, arrays, etc.
1164		*/
1165		public static final int SIZE = 20;
#	Line 1180 | Line 1263 | public class JSR166TestCase extends Test
1263		}
1264		public void refresh() {}
1265		public String toString() {
1266	<	List<Permission> ps = new ArrayList<Permission>();
1266	>	List<Permission> ps = new ArrayList<>();
1267		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1268		ps.add(e.nextElement());
1269		return "AdjustablePolicy with permissions " + ps;
#	Line 1210 | Line 1293 | public class JSR166TestCase extends Test
1293		* Sleeps until the given time has elapsed.
1294		* Throws AssertionFailedError if interrupted.
1295		*/
1296	<	void sleep(long millis) {
1296	>	static void sleep(long millis) {
1297		try {
1298		delay(millis);
1299		} catch (InterruptedException fail) {
#	Line 1226 | Line 1309 | public class JSR166TestCase extends Test
1309		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1310		*/
1311		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1312	<	long startTime = System.nanoTime();
1312	>	long startTime = 0L;
1313		for (;;) {
1314		Thread.State s = thread.getState();
1315		if (s == Thread.State.BLOCKED ||
#	Line 1235 | Line 1318 | public class JSR166TestCase extends Test
1318		return;
1319		else if (s == Thread.State.TERMINATED)
1320		fail("Unexpected thread termination");
1321	+	else if (startTime == 0L)
1322	+	startTime = System.nanoTime();
1323		else if (millisElapsedSince(startTime) > timeoutMillis) {
1324		threadAssertTrue(thread.isAlive());
1325	<	return;
1325	>	fail("timed out waiting for thread to enter wait state");
1326		}
1327		Thread.yield();
1328		}
1329		}
1330
1331		/**
1332	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1333	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1332	>	* Spin-waits up to the specified number of milliseconds for the given
1333	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1334	>	* and additionally satisfy the given condition.
1335	>	*/
1336	>	void waitForThreadToEnterWaitState(
1337	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1338	>	long startTime = 0L;
1339	>	for (;;) {
1340	>	Thread.State s = thread.getState();
1341	>	if (s == Thread.State.BLOCKED ||
1342	>	s == Thread.State.WAITING ||
1343	>	s == Thread.State.TIMED_WAITING) {
1344	>	try {
1345	>	if (waitingForGodot.call())
1346	>	return;
1347	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1348	>	}
1349	>	else if (s == Thread.State.TERMINATED)
1350	>	fail("Unexpected thread termination");
1351	>	else if (startTime == 0L)
1352	>	startTime = System.nanoTime();
1353	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1354	>	threadAssertTrue(thread.isAlive());
1355	>	fail("timed out waiting for thread to enter wait state");
1356	>	}
1357	>	Thread.yield();
1358	>	}
1359	>	}
1360	>
1361	>	/**
1362	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1363	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1364		*/
1365		void waitForThreadToEnterWaitState(Thread thread) {
1366		waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1367		}
1368
1369		/**
1370	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1371	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1372	+	* and additionally satisfy the given condition.
1373	+	*/
1374	+	void waitForThreadToEnterWaitState(
1375	+	Thread thread, Callable<Boolean> waitingForGodot) {
1376	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1377	+	}
1378	+
1379	+	/**
1380		* Returns the number of milliseconds since time given by
1381		* startNanoTime, which must have been previously returned from a
1382		* call to {@link System#nanoTime()}.
#	Line 1503 | Line 1628 | public class JSR166TestCase extends Test
1628		}
1629		}
1630
1631	+	public void await(CyclicBarrier barrier) {
1632	+	try {
1633	+	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1634	+	} catch (Throwable fail) {
1635	+	threadUnexpectedException(fail);
1636	+	}
1637	+	}
1638	+
1639		//     /**
1640		//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1641		//      */
#	Line 1526 | Line 1659 | public class JSR166TestCase extends Test
1659		public String call() { throw new NullPointerException(); }
1660		}
1661
1529	–	public static class CallableOne implements Callable<Integer> {
1530	–	public Integer call() { return one; }
1531	–	}
1532	–
1533	–	public class ShortRunnable extends CheckedRunnable {
1534	–	protected void realRun() throws Throwable {
1535	–	delay(SHORT_DELAY_MS);
1536	–	}
1537	–	}
1538	–
1539	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1540	–	protected void realRun() throws InterruptedException {
1541	–	delay(SHORT_DELAY_MS);
1542	–	}
1543	–	}
1544	–
1545	–	public class SmallRunnable extends CheckedRunnable {
1546	–	protected void realRun() throws Throwable {
1547	–	delay(SMALL_DELAY_MS);
1548	–	}
1549	–	}
1550	–
1662		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1663		protected void realRun() {
1664		try {
#	Line 1556 | Line 1667 | public class JSR166TestCase extends Test
1667		}
1668		}
1669
1559	–	public class SmallCallable extends CheckedCallable {
1560	–	protected Object realCall() throws InterruptedException {
1561	–	delay(SMALL_DELAY_MS);
1562	–	return Boolean.TRUE;
1563	–	}
1564	–	}
1565	–
1566	–	public class MediumRunnable extends CheckedRunnable {
1567	–	protected void realRun() throws Throwable {
1568	–	delay(MEDIUM_DELAY_MS);
1569	–	}
1570	–	}
1571	–
1572	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1573	–	protected void realRun() throws InterruptedException {
1574	–	delay(MEDIUM_DELAY_MS);
1575	–	}
1576	–	}
1577	–
1670		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1671		return new CheckedRunnable() {
1672		protected void realRun() {
#	Line 1584 | Line 1676 | public class JSR166TestCase extends Test
1676		}};
1677		}
1678
1587	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1588	–	protected void realRun() {
1589	–	try {
1590	–	delay(MEDIUM_DELAY_MS);
1591	–	} catch (InterruptedException ok) {}
1592	–	}
1593	–	}
1594	–
1595	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1596	–	protected void realRun() {
1597	–	try {
1598	–	delay(LONG_DELAY_MS);
1599	–	} catch (InterruptedException ok) {}
1600	–	}
1601	–	}
1602	–
1679		/**
1680		* For use as ThreadFactory in constructors
1681		*/
#	Line 1613 | Line 1689 | public class JSR166TestCase extends Test
1689		boolean isDone();
1690		}
1691
1616	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1617	–	return new TrackedRunnable() {
1618	–	private volatile boolean done = false;
1619	–	public boolean isDone() { return done; }
1620	–	public void run() {
1621	–	try {
1622	–	delay(timeoutMillis);
1623	–	done = true;
1624	–	} catch (InterruptedException ok) {}
1625	–	}
1626	–	};
1627	–	}
1628	–
1629	–	public static class TrackedShortRunnable implements Runnable {
1630	–	public volatile boolean done = false;
1631	–	public void run() {
1632	–	try {
1633	–	delay(SHORT_DELAY_MS);
1634	–	done = true;
1635	–	} catch (InterruptedException ok) {}
1636	–	}
1637	–	}
1638	–
1639	–	public static class TrackedSmallRunnable implements Runnable {
1640	–	public volatile boolean done = false;
1641	–	public void run() {
1642	–	try {
1643	–	delay(SMALL_DELAY_MS);
1644	–	done = true;
1645	–	} catch (InterruptedException ok) {}
1646	–	}
1647	–	}
1648	–
1649	–	public static class TrackedMediumRunnable implements Runnable {
1650	–	public volatile boolean done = false;
1651	–	public void run() {
1652	–	try {
1653	–	delay(MEDIUM_DELAY_MS);
1654	–	done = true;
1655	–	} catch (InterruptedException ok) {}
1656	–	}
1657	–	}
1658	–
1659	–	public static class TrackedLongRunnable implements Runnable {
1660	–	public volatile boolean done = false;
1661	–	public void run() {
1662	–	try {
1663	–	delay(LONG_DELAY_MS);
1664	–	done = true;
1665	–	} catch (InterruptedException ok) {}
1666	–	}
1667	–	}
1668	–
1692		public static class TrackedNoOpRunnable implements Runnable {
1693		public volatile boolean done = false;
1694		public void run() {
#	Line 1673 | Line 1696 | public class JSR166TestCase extends Test
1696		}
1697		}
1698
1676	–	public static class TrackedCallable implements Callable {
1677	–	public volatile boolean done = false;
1678	–	public Object call() {
1679	–	try {
1680	–	delay(SMALL_DELAY_MS);
1681	–	done = true;
1682	–	} catch (InterruptedException ok) {}
1683	–	return Boolean.TRUE;
1684	–	}
1685	–	}
1686	–
1699		/**
1700		* Analog of CheckedRunnable for RecursiveAction
1701		*/
#	Line 1727 | Line 1739 | public class JSR166TestCase extends Test
1739		* A CyclicBarrier that uses timed await and fails with
1740		* AssertionFailedErrors instead of throwing checked exceptions.
1741		*/
1742	<	public class CheckedBarrier extends CyclicBarrier {
1742	>	public static class CheckedBarrier extends CyclicBarrier {
1743		public CheckedBarrier(int parties) { super(parties); }
1744
1745		public int await() {
#	Line 1750 | Line 1762 | public class JSR166TestCase extends Test
1762		assertEquals(0, q.size());
1763		assertNull(q.peek());
1764		assertNull(q.poll());
1765	<	assertNull(q.poll(0, MILLISECONDS));
1765	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1766		assertEquals(q.toString(), "[]");
1767		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1768		assertFalse(q.iterator().hasNext());
#	Line 1791 | Line 1803 | public class JSR166TestCase extends Test
1803		}
1804		}
1805
1806	+	void assertImmutable(final Object o) {
1807	+	if (o instanceof Collection) {
1808	+	assertThrows(
1809	+	UnsupportedOperationException.class,
1810	+	new Runnable() { public void run() {
1811	+	((Collection) o).add(null);}});
1812	+	}
1813	+	}
1814	+
1815		@SuppressWarnings("unchecked")
1816		<T> T serialClone(T o) {
1817		try {
1818		ObjectInputStream ois = new ObjectInputStream
1819		(new ByteArrayInputStream(serialBytes(o)));
1820		T clone = (T) ois.readObject();
1821	+	if (o == clone) assertImmutable(o);
1822		assertSame(o.getClass(), clone.getClass());
1823		return clone;
1824		} catch (Throwable fail) {
#	Line 1805 | Line 1827 | public class JSR166TestCase extends Test
1827		}
1828		}
1829
1830	+	/**
1831	+	* A version of serialClone that leaves error handling (for
1832	+	* e.g. NotSerializableException) up to the caller.
1833	+	*/
1834	+	@SuppressWarnings("unchecked")
1835	+	<T> T serialClonePossiblyFailing(T o)
1836	+	throws ReflectiveOperationException, java.io.IOException {
1837	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1838	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1839	+	oos.writeObject(o);
1840	+	oos.flush();
1841	+	oos.close();
1842	+	ObjectInputStream ois = new ObjectInputStream
1843	+	(new ByteArrayInputStream(bos.toByteArray()));
1844	+	T clone = (T) ois.readObject();
1845	+	if (o == clone) assertImmutable(o);
1846	+	assertSame(o.getClass(), clone.getClass());
1847	+	return clone;
1848	+	}
1849	+
1850	+	/**
1851	+	* If o implements Cloneable and has a public clone method,
1852	+	* returns a clone of o, else null.
1853	+	*/
1854	+	@SuppressWarnings("unchecked")
1855	+	<T> T cloneableClone(T o) {
1856	+	if (!(o instanceof Cloneable)) return null;
1857	+	final T clone;
1858	+	try {
1859	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1860	+	} catch (NoSuchMethodException ok) {
1861	+	return null;
1862	+	} catch (ReflectiveOperationException unexpected) {
1863	+	throw new Error(unexpected);
1864	+	}
1865	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1866	+	assertSame(o.getClass(), clone.getClass());
1867	+	return clone;
1868	+	}
1869	+
1870		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1871		Runnable... throwingActions) {
1872		for (Runnable throwingAction : throwingActions) {
#	Line 1833 | Line 1895 | public class JSR166TestCase extends Test
1895		} catch (NoSuchElementException success) {}
1896		assertFalse(it.hasNext());
1897		}
1898	+
1899	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1900	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1901	+	}
1902	+
1903	+	public Runnable runnableThrowing(final RuntimeException ex) {
1904	+	return new Runnable() { public void run() { throw ex; }};
1905	+	}
1906	+
1907	+	/** A reusable thread pool to be shared by tests. */
1908	+	static final ExecutorService cachedThreadPool =
1909	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1910	+	1000L, MILLISECONDS,
1911	+	new SynchronousQueue<Runnable>());
1912	+
1913	+	static <T> void shuffle(T[] array) {
1914	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1915	+	}
1916	+
1917	+	/**
1918	+	* Returns the same String as would be returned by {@link
1919	+	* Object#toString}, whether or not the given object's class
1920	+	* overrides toString().
1921	+	*
1922	+	* @see System#identityHashCode
1923	+	*/
1924	+	static String identityString(Object x) {
1925	+	return x.getClass().getName()
1926	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1927	+	}
1928	+
1929	+	// --- Shared assertions for Executor tests ---
1930	+
1931	+	/**
1932	+	* Returns maximum number of tasks that can be submitted to given
1933	+	* pool (with bounded queue) before saturation (when submission
1934	+	* throws RejectedExecutionException).
1935	+	*/
1936	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1937	+	BlockingQueue<Runnable> q = pool.getQueue();
1938	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1939	+	}
1940	+
1941	+	@SuppressWarnings("FutureReturnValueIgnored")
1942	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1943	+	try {
1944	+	e.execute((Runnable) null);
1945	+	shouldThrow();
1946	+	} catch (NullPointerException success) {}
1947	+
1948	+	if (! (e instanceof ExecutorService)) return;
1949	+	ExecutorService es = (ExecutorService) e;
1950	+	try {
1951	+	es.submit((Runnable) null);
1952	+	shouldThrow();
1953	+	} catch (NullPointerException success) {}
1954	+	try {
1955	+	es.submit((Runnable) null, Boolean.TRUE);
1956	+	shouldThrow();
1957	+	} catch (NullPointerException success) {}
1958	+	try {
1959	+	es.submit((Callable) null);
1960	+	shouldThrow();
1961	+	} catch (NullPointerException success) {}
1962	+
1963	+	if (! (e instanceof ScheduledExecutorService)) return;
1964	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1965	+	try {
1966	+	ses.schedule((Runnable) null,
1967	+	randomTimeout(), randomTimeUnit());
1968	+	shouldThrow();
1969	+	} catch (NullPointerException success) {}
1970	+	try {
1971	+	ses.schedule((Callable) null,
1972	+	randomTimeout(), randomTimeUnit());
1973	+	shouldThrow();
1974	+	} catch (NullPointerException success) {}
1975	+	try {
1976	+	ses.scheduleAtFixedRate((Runnable) null,
1977	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1978	+	shouldThrow();
1979	+	} catch (NullPointerException success) {}
1980	+	try {
1981	+	ses.scheduleWithFixedDelay((Runnable) null,
1982	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1983	+	shouldThrow();
1984	+	} catch (NullPointerException success) {}
1985	+	}
1986	+
1987	+	void setRejectedExecutionHandler(
1988	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1989	+	p.setRejectedExecutionHandler(handler);
1990	+	assertSame(handler, p.getRejectedExecutionHandler());
1991	+	}
1992	+
1993	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1994	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1995	+	final long savedTaskCount = p.getTaskCount();
1996	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1997	+	final int savedQueueSize = p.getQueue().size();
1998	+	final boolean stock = (p.getClass().getClassLoader() == null);
1999	+
2000	+	Runnable r = () -> {};
2001	+	Callable<Boolean> c = () -> Boolean.TRUE;
2002	+
2003	+	class Recorder implements RejectedExecutionHandler {
2004	+	public volatile Runnable r = null;
2005	+	public volatile ThreadPoolExecutor p = null;
2006	+	public void reset() { r = null; p = null; }
2007	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2008	+	assertNull(this.r);
2009	+	assertNull(this.p);
2010	+	this.r = r;
2011	+	this.p = p;
2012	+	}
2013	+	}
2014	+
2015	+	// check custom handler is invoked exactly once per task
2016	+	Recorder recorder = new Recorder();
2017	+	setRejectedExecutionHandler(p, recorder);
2018	+	for (int i = 2; i--> 0; ) {
2019	+	recorder.reset();
2020	+	p.execute(r);
2021	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2022	+	assertSame(r, recorder.r);
2023	+	assertSame(p, recorder.p);
2024	+
2025	+	recorder.reset();
2026	+	assertFalse(p.submit(r).isDone());
2027	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2028	+	assertSame(p, recorder.p);
2029	+
2030	+	recorder.reset();
2031	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2032	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2033	+	assertSame(p, recorder.p);
2034	+
2035	+	recorder.reset();
2036	+	assertFalse(p.submit(c).isDone());
2037	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2038	+	assertSame(p, recorder.p);
2039	+
2040	+	if (p instanceof ScheduledExecutorService) {
2041	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2042	+	ScheduledFuture<?> future;
2043	+
2044	+	recorder.reset();
2045	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2046	+	assertFalse(future.isDone());
2047	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2048	+	assertSame(p, recorder.p);
2049	+
2050	+	recorder.reset();
2051	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2052	+	assertFalse(future.isDone());
2053	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2054	+	assertSame(p, recorder.p);
2055	+
2056	+	recorder.reset();
2057	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2058	+	assertFalse(future.isDone());
2059	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2060	+	assertSame(p, recorder.p);
2061	+
2062	+	recorder.reset();
2063	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2064	+	assertFalse(future.isDone());
2065	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2066	+	assertSame(p, recorder.p);
2067	+	}
2068	+	}
2069	+
2070	+	// Checking our custom handler above should be sufficient, but
2071	+	// we add some integration tests of standard handlers.
2072	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2073	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2074	+
2075	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2076	+	try {
2077	+	p.execute(setThread);
2078	+	shouldThrow();
2079	+	} catch (RejectedExecutionException success) {}
2080	+	assertNull(thread.get());
2081	+
2082	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2083	+	p.execute(setThread);
2084	+	assertNull(thread.get());
2085	+
2086	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2087	+	p.execute(setThread);
2088	+	if (p.isShutdown())
2089	+	assertNull(thread.get());
2090	+	else
2091	+	assertSame(Thread.currentThread(), thread.get());
2092	+
2093	+	setRejectedExecutionHandler(p, savedHandler);
2094	+
2095	+	// check that pool was not perturbed by handlers
2096	+	assertEquals(savedTaskCount, p.getTaskCount());
2097	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2098	+	assertEquals(savedQueueSize, p.getQueue().size());
2099	+	}
2100		}

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