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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.229 by jsr166, Sun May 14 03:15:37 2017 UTC vs.
Revision 1.234 by jsr166, Mon Jul 17 22:27:31 2017 UTC

#	Line 76 | 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;
#	Line 638 | Line 644 | public class JSR166TestCase extends Test
644		public static long MEDIUM_DELAY_MS;
645		public static long LONG_DELAY_MS;
646
647	+	private static final long RANDOM_TIMEOUT;
648	+	private static final long RANDOM_EXPIRED_TIMEOUT;
649	+	private static final TimeUnit RANDOM_TIMEUNIT;
650	+	static {
651	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
652	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
653	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
654	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
655	+	TimeUnit[] timeUnits = TimeUnit.values();
656	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
657	+	}
658	+
659	+	/**
660	+	* Returns a timeout for use when any value at all will do.
661	+	*/
662	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
663	+
664	+	/**
665	+	* Returns a timeout that means "no waiting", i.e. not positive.
666	+	*/
667	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
668	+
669	+	/**
670	+	* Returns a random non-null TimeUnit.
671	+	*/
672	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
673	+
674		/**
675		* Returns the shortest timed delay. This can be scaled up for
676		* slow machines using the jsr166.delay.factor system property,
#	Line 1083 | Line 1116 | public class JSR166TestCase extends Test
1116		}
1117
1118		/**
1119	+	* Checks that thread does not terminate within the default
1120	+	* millisecond delay of {@code timeoutMillis()}.
1121	+	* TODO: REMOVEME
1122	+	*/
1123	+	void assertThreadStaysAlive(Thread thread) {
1124	+	assertThreadStaysAlive(thread, timeoutMillis());
1125	+	}
1126	+
1127	+	/**
1128	+	* Checks that thread does not terminate within the given millisecond delay.
1129	+	* TODO: REMOVEME
1130	+	*/
1131	+	void assertThreadStaysAlive(Thread thread, long millis) {
1132	+	try {
1133	+	// No need to optimize the failing case via Thread.join.
1134	+	delay(millis);
1135	+	assertTrue(thread.isAlive());
1136	+	} catch (InterruptedException fail) {
1137	+	threadFail("Unexpected InterruptedException");
1138	+	}
1139	+	}
1140	+
1141	+	/**
1142	+	* Checks that the threads do not terminate within the default
1143	+	* millisecond delay of {@code timeoutMillis()}.
1144	+	* TODO: REMOVEME
1145	+	*/
1146	+	void assertThreadsStayAlive(Thread... threads) {
1147	+	assertThreadsStayAlive(timeoutMillis(), threads);
1148	+	}
1149	+
1150	+	/**
1151	+	* Checks that the threads do not terminate within the given millisecond delay.
1152	+	* TODO: REMOVEME
1153	+	*/
1154	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1155	+	try {
1156	+	// No need to optimize the failing case via Thread.join.
1157	+	delay(millis);
1158	+	for (Thread thread : threads)
1159	+	assertTrue(thread.isAlive());
1160	+	} catch (InterruptedException fail) {
1161	+	threadFail("Unexpected InterruptedException");
1162	+	}
1163	+	}
1164	+
1165	+	/**
1166		* Checks that future.get times out, with the default timeout of
1167		* {@code timeoutMillis()}.
1168		*/
#	Line 1625 | Line 1705 | public class JSR166TestCase extends Test
1705		public String call() { throw new NullPointerException(); }
1706		}
1707
1628	–	public static class CallableOne implements Callable<Integer> {
1629	–	public Integer call() { return one; }
1630	–	}
1631	–
1632	–	public class ShortRunnable extends CheckedRunnable {
1633	–	protected void realRun() throws Throwable {
1634	–	delay(SHORT_DELAY_MS);
1635	–	}
1636	–	}
1637	–
1638	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1639	–	protected void realRun() throws InterruptedException {
1640	–	delay(SHORT_DELAY_MS);
1641	–	}
1642	–	}
1643	–
1644	–	public class SmallRunnable extends CheckedRunnable {
1645	–	protected void realRun() throws Throwable {
1646	–	delay(SMALL_DELAY_MS);
1647	–	}
1648	–	}
1649	–
1708		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1709		protected void realRun() {
1710		try {
#	Line 1655 | Line 1713 | public class JSR166TestCase extends Test
1713		}
1714		}
1715
1658	–	public class SmallCallable extends CheckedCallable {
1659	–	protected Object realCall() throws InterruptedException {
1660	–	delay(SMALL_DELAY_MS);
1661	–	return Boolean.TRUE;
1662	–	}
1663	–	}
1664	–
1665	–	public class MediumRunnable extends CheckedRunnable {
1666	–	protected void realRun() throws Throwable {
1667	–	delay(MEDIUM_DELAY_MS);
1668	–	}
1669	–	}
1670	–
1671	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1672	–	protected void realRun() throws InterruptedException {
1673	–	delay(MEDIUM_DELAY_MS);
1674	–	}
1675	–	}
1676	–
1716		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1717		return new CheckedRunnable() {
1718		protected void realRun() {
#	Line 1683 | Line 1722 | public class JSR166TestCase extends Test
1722		}};
1723		}
1724
1686	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1687	–	protected void realRun() {
1688	–	try {
1689	–	delay(MEDIUM_DELAY_MS);
1690	–	} catch (InterruptedException ok) {}
1691	–	}
1692	–	}
1693	–
1694	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1695	–	protected void realRun() {
1696	–	try {
1697	–	delay(LONG_DELAY_MS);
1698	–	} catch (InterruptedException ok) {}
1699	–	}
1700	–	}
1701	–
1725		/**
1726		* For use as ThreadFactory in constructors
1727		*/
#	Line 1712 | Line 1735 | public class JSR166TestCase extends Test
1735		boolean isDone();
1736		}
1737
1715	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1716	–	return new TrackedRunnable() {
1717	–	private volatile boolean done = false;
1718	–	public boolean isDone() { return done; }
1719	–	public void run() {
1720	–	try {
1721	–	delay(timeoutMillis);
1722	–	done = true;
1723	–	} catch (InterruptedException ok) {}
1724	–	}
1725	–	};
1726	–	}
1727	–
1728	–	public static class TrackedShortRunnable implements Runnable {
1729	–	public volatile boolean done = false;
1730	–	public void run() {
1731	–	try {
1732	–	delay(SHORT_DELAY_MS);
1733	–	done = true;
1734	–	} catch (InterruptedException ok) {}
1735	–	}
1736	–	}
1737	–
1738	–	public static class TrackedSmallRunnable implements Runnable {
1739	–	public volatile boolean done = false;
1740	–	public void run() {
1741	–	try {
1742	–	delay(SMALL_DELAY_MS);
1743	–	done = true;
1744	–	} catch (InterruptedException ok) {}
1745	–	}
1746	–	}
1747	–
1748	–	public static class TrackedMediumRunnable implements Runnable {
1749	–	public volatile boolean done = false;
1750	–	public void run() {
1751	–	try {
1752	–	delay(MEDIUM_DELAY_MS);
1753	–	done = true;
1754	–	} catch (InterruptedException ok) {}
1755	–	}
1756	–	}
1757	–
1758	–	public static class TrackedLongRunnable implements Runnable {
1759	–	public volatile boolean done = false;
1760	–	public void run() {
1761	–	try {
1762	–	delay(LONG_DELAY_MS);
1763	–	done = true;
1764	–	} catch (InterruptedException ok) {}
1765	–	}
1766	–	}
1767	–
1738		public static class TrackedNoOpRunnable implements Runnable {
1739		public volatile boolean done = false;
1740		public void run() {
#	Line 1772 | Line 1742 | public class JSR166TestCase extends Test
1742		}
1743		}
1744
1775	–	public static class TrackedCallable implements Callable {
1776	–	public volatile boolean done = false;
1777	–	public Object call() {
1778	–	try {
1779	–	delay(SMALL_DELAY_MS);
1780	–	done = true;
1781	–	} catch (InterruptedException ok) {}
1782	–	return Boolean.TRUE;
1783	–	}
1784	–	}
1785	–
1745		/**
1746		* Analog of CheckedRunnable for RecursiveAction
1747		*/
#	Line 1849 | Line 1808 | public class JSR166TestCase extends Test
1808		assertEquals(0, q.size());
1809		assertNull(q.peek());
1810		assertNull(q.poll());
1811	<	assertNull(q.poll(0, MILLISECONDS));
1811	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1812		assertEquals(q.toString(), "[]");
1813		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1814		assertFalse(q.iterator().hasNext());
#	Line 2000 | Line 1959 | public class JSR166TestCase extends Test
1959		static <T> void shuffle(T[] array) {
1960		Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1961		}
1962	+
1963	+	// --- Shared assertions for Executor tests ---
1964	+
1965	+	/**
1966	+	* Returns maximum number of tasks that can be submitted to given
1967	+	* pool (with bounded queue) before saturation (when submission
1968	+	* throws RejectedExecutionException).
1969	+	*/
1970	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1971	+	BlockingQueue<Runnable> q = pool.getQueue();
1972	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1973	+	}
1974	+
1975	+	@SuppressWarnings("FutureReturnValueIgnored")
1976	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1977	+	try {
1978	+	e.execute((Runnable) null);
1979	+	shouldThrow();
1980	+	} catch (NullPointerException success) {}
1981	+
1982	+	if (! (e instanceof ExecutorService)) return;
1983	+	ExecutorService es = (ExecutorService) e;
1984	+	try {
1985	+	es.submit((Runnable) null);
1986	+	shouldThrow();
1987	+	} catch (NullPointerException success) {}
1988	+	try {
1989	+	es.submit((Runnable) null, Boolean.TRUE);
1990	+	shouldThrow();
1991	+	} catch (NullPointerException success) {}
1992	+	try {
1993	+	es.submit((Callable) null);
1994	+	shouldThrow();
1995	+	} catch (NullPointerException success) {}
1996	+
1997	+	if (! (e instanceof ScheduledExecutorService)) return;
1998	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1999	+	try {
2000	+	ses.schedule((Runnable) null,
2001	+	randomTimeout(), randomTimeUnit());
2002	+	shouldThrow();
2003	+	} catch (NullPointerException success) {}
2004	+	try {
2005	+	ses.schedule((Callable) null,
2006	+	randomTimeout(), randomTimeUnit());
2007	+	shouldThrow();
2008	+	} catch (NullPointerException success) {}
2009	+	try {
2010	+	ses.scheduleAtFixedRate((Runnable) null,
2011	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2012	+	shouldThrow();
2013	+	} catch (NullPointerException success) {}
2014	+	try {
2015	+	ses.scheduleWithFixedDelay((Runnable) null,
2016	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2017	+	shouldThrow();
2018	+	} catch (NullPointerException success) {}
2019	+	}
2020	+
2021	+	void setRejectedExecutionHandler(
2022	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
2023	+	p.setRejectedExecutionHandler(handler);
2024	+	assertSame(handler, p.getRejectedExecutionHandler());
2025	+	}
2026	+
2027	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
2028	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
2029	+	final long savedTaskCount = p.getTaskCount();
2030	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
2031	+	final int savedQueueSize = p.getQueue().size();
2032	+	final boolean stock = (p.getClass().getClassLoader() == null);
2033	+
2034	+	Runnable r = () -> {};
2035	+	Callable<Boolean> c = () -> Boolean.TRUE;
2036	+
2037	+	class Recorder implements RejectedExecutionHandler {
2038	+	public volatile Runnable r = null;
2039	+	public volatile ThreadPoolExecutor p = null;
2040	+	public void reset() { r = null; p = null; }
2041	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2042	+	assertNull(this.r);
2043	+	assertNull(this.p);
2044	+	this.r = r;
2045	+	this.p = p;
2046	+	}
2047	+	}
2048	+
2049	+	// check custom handler is invoked exactly once per task
2050	+	Recorder recorder = new Recorder();
2051	+	setRejectedExecutionHandler(p, recorder);
2052	+	for (int i = 2; i--> 0; ) {
2053	+	recorder.reset();
2054	+	p.execute(r);
2055	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2056	+	assertSame(r, recorder.r);
2057	+	assertSame(p, recorder.p);
2058	+
2059	+	recorder.reset();
2060	+	assertFalse(p.submit(r).isDone());
2061	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2062	+	assertSame(p, recorder.p);
2063	+
2064	+	recorder.reset();
2065	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2066	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2067	+	assertSame(p, recorder.p);
2068	+
2069	+	recorder.reset();
2070	+	assertFalse(p.submit(c).isDone());
2071	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2072	+	assertSame(p, recorder.p);
2073	+
2074	+	if (p instanceof ScheduledExecutorService) {
2075	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2076	+	ScheduledFuture<?> future;
2077	+
2078	+	recorder.reset();
2079	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2080	+	assertFalse(future.isDone());
2081	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2082	+	assertSame(p, recorder.p);
2083	+
2084	+	recorder.reset();
2085	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2086	+	assertFalse(future.isDone());
2087	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2088	+	assertSame(p, recorder.p);
2089	+
2090	+	recorder.reset();
2091	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2092	+	assertFalse(future.isDone());
2093	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2094	+	assertSame(p, recorder.p);
2095	+
2096	+	recorder.reset();
2097	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2098	+	assertFalse(future.isDone());
2099	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2100	+	assertSame(p, recorder.p);
2101	+	}
2102	+	}
2103	+
2104	+	// Checking our custom handler above should be sufficient, but
2105	+	// we add some integration tests of standard handlers.
2106	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2107	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2108	+
2109	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2110	+	try {
2111	+	p.execute(setThread);
2112	+	shouldThrow();
2113	+	} catch (RejectedExecutionException success) {}
2114	+	assertNull(thread.get());
2115	+
2116	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2117	+	p.execute(setThread);
2118	+	assertNull(thread.get());
2119	+
2120	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2121	+	p.execute(setThread);
2122	+	if (p.isShutdown())
2123	+	assertNull(thread.get());
2124	+	else
2125	+	assertSame(Thread.currentThread(), thread.get());
2126	+
2127	+	setRejectedExecutionHandler(p, savedHandler);
2128	+
2129	+	// check that pool was not perturbed by handlers
2130	+	assertEquals(savedTaskCount, p.getTaskCount());
2131	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2132	+	assertEquals(savedQueueSize, p.getQueue().size());
2133	+	}
2134		}

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