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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.214 by jsr166, Fri Dec 9 07:26:04 2016 UTC vs.
Revision 1.238 by jsr166, Mon Dec 11 00:27:08 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 (conformance testing mode)
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		* @modules java.management
17		* @run junit/othervm/timeout=1000 JSR166TestCase
15	–	*/
16	–
17	–	/*
18	–	* @test
19	–	* @summary JSR-166 tck tests (whitebox tests allowed)
20	–	* @build *
21	–	* @modules java.base/java.util.concurrent:open
22	–	*          java.management
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 48 | 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;
51	–	import java.nio.file.Files;
52	–	import java.nio.file.Paths;
57		import java.security.CodeSource;
58		import java.security.Permission;
59		import java.security.PermissionCollection;
#	Line 72 | 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;
90	–	import java.util.regex.Matcher;
100		import java.util.regex.Pattern;
101
102		import junit.framework.AssertionFailedError;
#	Line 297 | 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 434 | Line 445 | public class JSR166TestCase extends Test
445		}
446		}
447
448	<	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
449	<	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
450	<	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
451	<	public static boolean atLeastJava9() {
452	<	return JAVA_CLASS_VERSION >= 53.0
442	<	// As of 2015-09, java9 still uses 52.0 class file version
443	<	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
444	<	}
445	<	public static boolean atLeastJava10() {
446	<	return JAVA_CLASS_VERSION >= 54.0
447	<	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
448	<	}
448	>	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
449	>	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
450	>	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
451	>	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
452	>	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
453
454		/**
455		* Collects all JSR166 unit tests as one suite.
#	Line 533 | Line 537 | public class JSR166TestCase extends Test
537		"DoubleAdderTest",
538		"ForkJoinPool8Test",
539		"ForkJoinTask8Test",
540	+	"HashMapTest",
541	+	"LinkedBlockingDeque8Test",
542	+	"LinkedBlockingQueue8Test",
543		"LongAccumulatorTest",
544		"LongAdderTest",
545		"SplittableRandomTest",
#	Line 555 | Line 562 | public class JSR166TestCase extends Test
562		"AtomicReference9Test",
563		"AtomicReferenceArray9Test",
564		"ExecutorCompletionService9Test",
565	+	"ForkJoinPool9Test",
566		};
567		addNamedTestClasses(suite, java9TestClassNames);
568		}
#	Line 565 | Line 573 | public class JSR166TestCase extends Test
573		/** Returns list of junit-style test method names in given class. */
574		public static ArrayList<String> testMethodNames(Class<?> testClass) {
575		Method[] methods = testClass.getDeclaredMethods();
576	<	ArrayList<String> names = new ArrayList<String>(methods.length);
576	>	ArrayList<String> names = new ArrayList<>(methods.length);
577		for (Method method : methods) {
578		if (method.getName().startsWith("test")
579		&& Modifier.isPublic(method.getModifiers())
#	Line 630 | Line 638 | public class JSR166TestCase extends Test
638		public static long MEDIUM_DELAY_MS;
639		public static long LONG_DELAY_MS;
640
641	+	private static final long RANDOM_TIMEOUT;
642	+	private static final long RANDOM_EXPIRED_TIMEOUT;
643	+	private static final TimeUnit RANDOM_TIMEUNIT;
644	+	static {
645	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
646	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
647	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
648	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
649	+	TimeUnit[] timeUnits = TimeUnit.values();
650	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
651	+	}
652	+
653	+	/**
654	+	* Returns a timeout for use when any value at all will do.
655	+	*/
656	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
657	+
658	+	/**
659	+	* Returns a timeout that means "no waiting", i.e. not positive.
660	+	*/
661	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
662	+
663	+	/**
664	+	* Returns a random non-null TimeUnit.
665	+	*/
666	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
667	+
668		/**
669		* Returns the shortest timed delay. This can be scaled up for
670		* slow machines using the jsr166.delay.factor system property,
#	Line 650 | Line 685 | public class JSR166TestCase extends Test
685		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
686		}
687
688	+	private static final long TIMEOUT_DELAY_MS
689	+	= (long) (12.0 * Math.cbrt(delayFactor));
690	+
691		/**
692	<	* Returns a timeout in milliseconds to be used in tests that
693	<	* verify that operations block or time out.
692	>	* Returns a timeout in milliseconds to be used in tests that verify
693	>	* that operations block or time out.  We want this to be longer
694	>	* than the OS scheduling quantum, but not too long, so don't scale
695	>	* linearly with delayFactor; we use "crazy" cube root instead.
696		*/
697	<	long timeoutMillis() {
698	<	return SHORT_DELAY_MS / 4;
697	>	static long timeoutMillis() {
698	>	return TIMEOUT_DELAY_MS;
699		}
700
701		/**
#	Line 671 | Line 711 | public class JSR166TestCase extends Test
711		* The first exception encountered if any threadAssertXXX method fails.
712		*/
713		private final AtomicReference<Throwable> threadFailure
714	<	= new AtomicReference<Throwable>(null);
714	>	= new AtomicReference<>(null);
715
716		/**
717		* Records an exception so that it can be rethrown later in the test
#	Line 1050 | Line 1090 | public class JSR166TestCase extends Test
1090		}
1091
1092		/**
1093	<	* Checks that thread does not terminate within the default
1054	<	* millisecond delay of {@code timeoutMillis()}.
1055	<	*/
1056	<	void assertThreadStaysAlive(Thread thread) {
1057	<	assertThreadStaysAlive(thread, timeoutMillis());
1058	<	}
1059	<
1060	<	/**
1061	<	* Checks that thread does not terminate within the given millisecond delay.
1062	<	*/
1063	<	void assertThreadStaysAlive(Thread thread, long millis) {
1064	<	try {
1065	<	// No need to optimize the failing case via Thread.join.
1066	<	delay(millis);
1067	<	assertTrue(thread.isAlive());
1068	<	} catch (InterruptedException fail) {
1069	<	threadFail("Unexpected InterruptedException");
1070	<	}
1071	<	}
1072	<
1073	<	/**
1074	<	* Checks that the threads do not terminate within the default
1075	<	* millisecond delay of {@code timeoutMillis()}.
1076	<	*/
1077	<	void assertThreadsStayAlive(Thread... threads) {
1078	<	assertThreadsStayAlive(timeoutMillis(), threads);
1079	<	}
1080	<
1081	<	/**
1082	<	* Checks that the threads do not terminate within the given millisecond delay.
1093	>	* Checks that thread eventually enters the expected blocked thread state.
1094		*/
1095	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1096	<	try {
1097	<	// No need to optimize the failing case via Thread.join.
1098	<	delay(millis);
1099	<	for (Thread thread : threads)
1100	<	assertTrue(thread.isAlive());
1101	<	} catch (InterruptedException fail) {
1102	<	threadFail("Unexpected InterruptedException");
1095	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1096	>	// always sleep at least 1 ms, with high probability avoiding
1097	>	// transitory states
1098	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1099	>	try { delay(1); }
1100	>	catch (InterruptedException fail) {
1101	>	fail("Unexpected InterruptedException");
1102	>	}
1103	>	Thread.State s = thread.getState();
1104	>	if (s == expected)
1105	>	return;
1106	>	else if (s == Thread.State.TERMINATED)
1107	>	fail("Unexpected thread termination");
1108		}
1109	+	fail("timed out waiting for thread to enter thread state " + expected);
1110		}
1111
1112		/**
#	Line 1130 | Line 1147 | public class JSR166TestCase extends Test
1147		}
1148
1149		/**
1150	+	* The maximum number of consecutive spurious wakeups we should
1151	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1152	+	*/
1153	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1154	+
1155	+	/**
1156		* The number of elements to place in collections, arrays, etc.
1157		*/
1158		public static final int SIZE = 20;
#	Line 1233 | Line 1256 | public class JSR166TestCase extends Test
1256		}
1257		public void refresh() {}
1258		public String toString() {
1259	<	List<Permission> ps = new ArrayList<Permission>();
1259	>	List<Permission> ps = new ArrayList<>();
1260		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1261		ps.add(e.nextElement());
1262		return "AdjustablePolicy with permissions " + ps;
#	Line 1292 | Line 1315 | public class JSR166TestCase extends Test
1315		startTime = System.nanoTime();
1316		else if (millisElapsedSince(startTime) > timeoutMillis) {
1317		threadAssertTrue(thread.isAlive());
1318	<	return;
1318	>	fail("timed out waiting for thread to enter wait state");
1319	>	}
1320	>	Thread.yield();
1321	>	}
1322	>	}
1323	>
1324	>	/**
1325	>	* Spin-waits up to the specified number of milliseconds for the given
1326	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1327	>	* and additionally satisfy the given condition.
1328	>	*/
1329	>	void waitForThreadToEnterWaitState(
1330	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1331	>	long startTime = 0L;
1332	>	for (;;) {
1333	>	Thread.State s = thread.getState();
1334	>	if (s == Thread.State.BLOCKED ||
1335	>	s == Thread.State.WAITING ||
1336	>	s == Thread.State.TIMED_WAITING) {
1337	>	try {
1338	>	if (waitingForGodot.call())
1339	>	return;
1340	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1341	>	}
1342	>	else if (s == Thread.State.TERMINATED)
1343	>	fail("Unexpected thread termination");
1344	>	else if (startTime == 0L)
1345	>	startTime = System.nanoTime();
1346	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1347	>	threadAssertTrue(thread.isAlive());
1348	>	fail("timed out waiting for thread to enter wait state");
1349		}
1350		Thread.yield();
1351		}
1352		}
1353
1354		/**
1355	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1356	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1355	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1356	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1357		*/
1358		void waitForThreadToEnterWaitState(Thread thread) {
1359		waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1360		}
1361
1362		/**
1363	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1364	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1365	+	* and additionally satisfy the given condition.
1366	+	*/
1367	+	void waitForThreadToEnterWaitState(
1368	+	Thread thread, Callable<Boolean> waitingForGodot) {
1369	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1370	+	}
1371	+
1372	+	/**
1373		* Returns the number of milliseconds since time given by
1374		* startNanoTime, which must have been previously returned from a
1375		* call to {@link System#nanoTime()}.
#	Line 1558 | Line 1621 | public class JSR166TestCase extends Test
1621		}
1622		}
1623
1624	+	public void await(CyclicBarrier barrier) {
1625	+	try {
1626	+	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1627	+	} catch (Throwable fail) {
1628	+	threadUnexpectedException(fail);
1629	+	}
1630	+	}
1631	+
1632		//     /**
1633		//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1634		//      */
#	Line 1581 | Line 1652 | public class JSR166TestCase extends Test
1652		public String call() { throw new NullPointerException(); }
1653		}
1654
1584	–	public static class CallableOne implements Callable<Integer> {
1585	–	public Integer call() { return one; }
1586	–	}
1587	–
1588	–	public class ShortRunnable extends CheckedRunnable {
1589	–	protected void realRun() throws Throwable {
1590	–	delay(SHORT_DELAY_MS);
1591	–	}
1592	–	}
1593	–
1594	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1595	–	protected void realRun() throws InterruptedException {
1596	–	delay(SHORT_DELAY_MS);
1597	–	}
1598	–	}
1599	–
1600	–	public class SmallRunnable extends CheckedRunnable {
1601	–	protected void realRun() throws Throwable {
1602	–	delay(SMALL_DELAY_MS);
1603	–	}
1604	–	}
1605	–
1655		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1656		protected void realRun() {
1657		try {
#	Line 1611 | Line 1660 | public class JSR166TestCase extends Test
1660		}
1661		}
1662
1614	–	public class SmallCallable extends CheckedCallable {
1615	–	protected Object realCall() throws InterruptedException {
1616	–	delay(SMALL_DELAY_MS);
1617	–	return Boolean.TRUE;
1618	–	}
1619	–	}
1620	–
1621	–	public class MediumRunnable extends CheckedRunnable {
1622	–	protected void realRun() throws Throwable {
1623	–	delay(MEDIUM_DELAY_MS);
1624	–	}
1625	–	}
1626	–
1627	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1628	–	protected void realRun() throws InterruptedException {
1629	–	delay(MEDIUM_DELAY_MS);
1630	–	}
1631	–	}
1632	–
1663		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1664		return new CheckedRunnable() {
1665		protected void realRun() {
#	Line 1639 | Line 1669 | public class JSR166TestCase extends Test
1669		}};
1670		}
1671
1642	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1643	–	protected void realRun() {
1644	–	try {
1645	–	delay(MEDIUM_DELAY_MS);
1646	–	} catch (InterruptedException ok) {}
1647	–	}
1648	–	}
1649	–
1650	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1651	–	protected void realRun() {
1652	–	try {
1653	–	delay(LONG_DELAY_MS);
1654	–	} catch (InterruptedException ok) {}
1655	–	}
1656	–	}
1657	–
1672		/**
1673		* For use as ThreadFactory in constructors
1674		*/
#	Line 1668 | Line 1682 | public class JSR166TestCase extends Test
1682		boolean isDone();
1683		}
1684
1671	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1672	–	return new TrackedRunnable() {
1673	–	private volatile boolean done = false;
1674	–	public boolean isDone() { return done; }
1675	–	public void run() {
1676	–	try {
1677	–	delay(timeoutMillis);
1678	–	done = true;
1679	–	} catch (InterruptedException ok) {}
1680	–	}
1681	–	};
1682	–	}
1683	–
1684	–	public static class TrackedShortRunnable implements Runnable {
1685	–	public volatile boolean done = false;
1686	–	public void run() {
1687	–	try {
1688	–	delay(SHORT_DELAY_MS);
1689	–	done = true;
1690	–	} catch (InterruptedException ok) {}
1691	–	}
1692	–	}
1693	–
1694	–	public static class TrackedSmallRunnable implements Runnable {
1695	–	public volatile boolean done = false;
1696	–	public void run() {
1697	–	try {
1698	–	delay(SMALL_DELAY_MS);
1699	–	done = true;
1700	–	} catch (InterruptedException ok) {}
1701	–	}
1702	–	}
1703	–
1704	–	public static class TrackedMediumRunnable implements Runnable {
1705	–	public volatile boolean done = false;
1706	–	public void run() {
1707	–	try {
1708	–	delay(MEDIUM_DELAY_MS);
1709	–	done = true;
1710	–	} catch (InterruptedException ok) {}
1711	–	}
1712	–	}
1713	–
1714	–	public static class TrackedLongRunnable implements Runnable {
1715	–	public volatile boolean done = false;
1716	–	public void run() {
1717	–	try {
1718	–	delay(LONG_DELAY_MS);
1719	–	done = true;
1720	–	} catch (InterruptedException ok) {}
1721	–	}
1722	–	}
1723	–
1685		public static class TrackedNoOpRunnable implements Runnable {
1686		public volatile boolean done = false;
1687		public void run() {
#	Line 1728 | Line 1689 | public class JSR166TestCase extends Test
1689		}
1690		}
1691
1731	–	public static class TrackedCallable implements Callable {
1732	–	public volatile boolean done = false;
1733	–	public Object call() {
1734	–	try {
1735	–	delay(SMALL_DELAY_MS);
1736	–	done = true;
1737	–	} catch (InterruptedException ok) {}
1738	–	return Boolean.TRUE;
1739	–	}
1740	–	}
1741	–
1692		/**
1693		* Analog of CheckedRunnable for RecursiveAction
1694		*/
#	Line 1805 | Line 1755 | public class JSR166TestCase extends Test
1755		assertEquals(0, q.size());
1756		assertNull(q.peek());
1757		assertNull(q.poll());
1758	<	assertNull(q.poll(0, MILLISECONDS));
1758	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1759		assertEquals(q.toString(), "[]");
1760		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1761		assertFalse(q.iterator().hasNext());
#	Line 1956 | Line 1906 | public class JSR166TestCase extends Test
1906		static <T> void shuffle(T[] array) {
1907		Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1908		}
1909	+
1910	+	/**
1911	+	* Returns the same String as would be returned by {@link
1912	+	* Object#toString}, whether or not the given object's class
1913	+	* overrides toString().
1914	+	*
1915	+	* @see System#identityHashCode
1916	+	*/
1917	+	static String identityString(Object x) {
1918	+	return x.getClass().getName()
1919	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1920	+	}
1921	+
1922	+	// --- Shared assertions for Executor tests ---
1923	+
1924	+	/**
1925	+	* Returns maximum number of tasks that can be submitted to given
1926	+	* pool (with bounded queue) before saturation (when submission
1927	+	* throws RejectedExecutionException).
1928	+	*/
1929	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1930	+	BlockingQueue<Runnable> q = pool.getQueue();
1931	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1932	+	}
1933	+
1934	+	@SuppressWarnings("FutureReturnValueIgnored")
1935	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1936	+	try {
1937	+	e.execute((Runnable) null);
1938	+	shouldThrow();
1939	+	} catch (NullPointerException success) {}
1940	+
1941	+	if (! (e instanceof ExecutorService)) return;
1942	+	ExecutorService es = (ExecutorService) e;
1943	+	try {
1944	+	es.submit((Runnable) null);
1945	+	shouldThrow();
1946	+	} catch (NullPointerException success) {}
1947	+	try {
1948	+	es.submit((Runnable) null, Boolean.TRUE);
1949	+	shouldThrow();
1950	+	} catch (NullPointerException success) {}
1951	+	try {
1952	+	es.submit((Callable) null);
1953	+	shouldThrow();
1954	+	} catch (NullPointerException success) {}
1955	+
1956	+	if (! (e instanceof ScheduledExecutorService)) return;
1957	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1958	+	try {
1959	+	ses.schedule((Runnable) null,
1960	+	randomTimeout(), randomTimeUnit());
1961	+	shouldThrow();
1962	+	} catch (NullPointerException success) {}
1963	+	try {
1964	+	ses.schedule((Callable) null,
1965	+	randomTimeout(), randomTimeUnit());
1966	+	shouldThrow();
1967	+	} catch (NullPointerException success) {}
1968	+	try {
1969	+	ses.scheduleAtFixedRate((Runnable) null,
1970	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1971	+	shouldThrow();
1972	+	} catch (NullPointerException success) {}
1973	+	try {
1974	+	ses.scheduleWithFixedDelay((Runnable) null,
1975	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1976	+	shouldThrow();
1977	+	} catch (NullPointerException success) {}
1978	+	}
1979	+
1980	+	void setRejectedExecutionHandler(
1981	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1982	+	p.setRejectedExecutionHandler(handler);
1983	+	assertSame(handler, p.getRejectedExecutionHandler());
1984	+	}
1985	+
1986	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1987	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1988	+	final long savedTaskCount = p.getTaskCount();
1989	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1990	+	final int savedQueueSize = p.getQueue().size();
1991	+	final boolean stock = (p.getClass().getClassLoader() == null);
1992	+
1993	+	Runnable r = () -> {};
1994	+	Callable<Boolean> c = () -> Boolean.TRUE;
1995	+
1996	+	class Recorder implements RejectedExecutionHandler {
1997	+	public volatile Runnable r = null;
1998	+	public volatile ThreadPoolExecutor p = null;
1999	+	public void reset() { r = null; p = null; }
2000	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2001	+	assertNull(this.r);
2002	+	assertNull(this.p);
2003	+	this.r = r;
2004	+	this.p = p;
2005	+	}
2006	+	}
2007	+
2008	+	// check custom handler is invoked exactly once per task
2009	+	Recorder recorder = new Recorder();
2010	+	setRejectedExecutionHandler(p, recorder);
2011	+	for (int i = 2; i--> 0; ) {
2012	+	recorder.reset();
2013	+	p.execute(r);
2014	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2015	+	assertSame(r, recorder.r);
2016	+	assertSame(p, recorder.p);
2017	+
2018	+	recorder.reset();
2019	+	assertFalse(p.submit(r).isDone());
2020	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2021	+	assertSame(p, recorder.p);
2022	+
2023	+	recorder.reset();
2024	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2025	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2026	+	assertSame(p, recorder.p);
2027	+
2028	+	recorder.reset();
2029	+	assertFalse(p.submit(c).isDone());
2030	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2031	+	assertSame(p, recorder.p);
2032	+
2033	+	if (p instanceof ScheduledExecutorService) {
2034	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2035	+	ScheduledFuture<?> future;
2036	+
2037	+	recorder.reset();
2038	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2039	+	assertFalse(future.isDone());
2040	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2041	+	assertSame(p, recorder.p);
2042	+
2043	+	recorder.reset();
2044	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2045	+	assertFalse(future.isDone());
2046	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2047	+	assertSame(p, recorder.p);
2048	+
2049	+	recorder.reset();
2050	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2051	+	assertFalse(future.isDone());
2052	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2053	+	assertSame(p, recorder.p);
2054	+
2055	+	recorder.reset();
2056	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2057	+	assertFalse(future.isDone());
2058	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2059	+	assertSame(p, recorder.p);
2060	+	}
2061	+	}
2062	+
2063	+	// Checking our custom handler above should be sufficient, but
2064	+	// we add some integration tests of standard handlers.
2065	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2066	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2067	+
2068	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2069	+	try {
2070	+	p.execute(setThread);
2071	+	shouldThrow();
2072	+	} catch (RejectedExecutionException success) {}
2073	+	assertNull(thread.get());
2074	+
2075	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2076	+	p.execute(setThread);
2077	+	assertNull(thread.get());
2078	+
2079	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2080	+	p.execute(setThread);
2081	+	if (p.isShutdown())
2082	+	assertNull(thread.get());
2083	+	else
2084	+	assertSame(Thread.currentThread(), thread.get());
2085	+
2086	+	setRejectedExecutionHandler(p, savedHandler);
2087	+
2088	+	// check that pool was not perturbed by handlers
2089	+	assertEquals(savedTaskCount, p.getTaskCount());
2090	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2091	+	assertEquals(savedQueueSize, p.getQueue().size());
2092	+	}
2093		}

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