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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.227 by jsr166, Sun May 14 03:12:05 2017 UTC vs.
Revision 1.235 by jsr166, Sat Jul 22 18:23:59 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 1066 | Line 1099 | public class JSR166TestCase extends Test
1099		* Checks that thread eventually enters the expected blocked thread state.
1100		*/
1101		void assertThreadBlocks(Thread thread, Thread.State expected) {
1102	<	// always sleep at least 1 ms, avoiding transitional states
1103	<	// with high probability
1102	>	// always sleep at least 1 ms, with high probability avoiding
1103	>	// transitory states
1104		for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1105		try { delay(1); }
1106		catch (InterruptedException fail) {
#	Line 1083 | Line 1116 | public class JSR166TestCase extends Test
1116		}
1117
1118		/**
1086	–	* Checks that thread does not terminate within the default
1087	–	* millisecond delay of {@code timeoutMillis()}.
1088	–	*/
1089	–	void assertThreadStaysAlive(Thread thread) {
1090	–	assertThreadStaysAlive(thread, timeoutMillis());
1091	–	}
1092	–
1093	–	/**
1094	–	* Checks that thread does not terminate within the given millisecond delay.
1095	–	*/
1096	–	void assertThreadStaysAlive(Thread thread, long millis) {
1097	–	try {
1098	–	// No need to optimize the failing case via Thread.join.
1099	–	delay(millis);
1100	–	assertTrue(thread.isAlive());
1101	–	} catch (InterruptedException fail) {
1102	–	threadFail("Unexpected InterruptedException");
1103	–	}
1104	–	}
1105	–
1106	–	/**
1119		* Checks that future.get times out, with the default timeout of
1120		* {@code timeoutMillis()}.
1121		*/
#	Line 1646 | Line 1658 | public class JSR166TestCase extends Test
1658		public String call() { throw new NullPointerException(); }
1659		}
1660
1649	–	public static class CallableOne implements Callable<Integer> {
1650	–	public Integer call() { return one; }
1651	–	}
1652	–
1653	–	public class ShortRunnable extends CheckedRunnable {
1654	–	protected void realRun() throws Throwable {
1655	–	delay(SHORT_DELAY_MS);
1656	–	}
1657	–	}
1658	–
1659	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1660	–	protected void realRun() throws InterruptedException {
1661	–	delay(SHORT_DELAY_MS);
1662	–	}
1663	–	}
1664	–
1665	–	public class SmallRunnable extends CheckedRunnable {
1666	–	protected void realRun() throws Throwable {
1667	–	delay(SMALL_DELAY_MS);
1668	–	}
1669	–	}
1670	–
1661		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1662		protected void realRun() {
1663		try {
#	Line 1676 | Line 1666 | public class JSR166TestCase extends Test
1666		}
1667		}
1668
1679	–	public class SmallCallable extends CheckedCallable {
1680	–	protected Object realCall() throws InterruptedException {
1681	–	delay(SMALL_DELAY_MS);
1682	–	return Boolean.TRUE;
1683	–	}
1684	–	}
1685	–
1686	–	public class MediumRunnable extends CheckedRunnable {
1687	–	protected void realRun() throws Throwable {
1688	–	delay(MEDIUM_DELAY_MS);
1689	–	}
1690	–	}
1691	–
1692	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1693	–	protected void realRun() throws InterruptedException {
1694	–	delay(MEDIUM_DELAY_MS);
1695	–	}
1696	–	}
1697	–
1669		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1670		return new CheckedRunnable() {
1671		protected void realRun() {
#	Line 1704 | Line 1675 | public class JSR166TestCase extends Test
1675		}};
1676		}
1677
1707	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1708	–	protected void realRun() {
1709	–	try {
1710	–	delay(MEDIUM_DELAY_MS);
1711	–	} catch (InterruptedException ok) {}
1712	–	}
1713	–	}
1714	–
1715	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1716	–	protected void realRun() {
1717	–	try {
1718	–	delay(LONG_DELAY_MS);
1719	–	} catch (InterruptedException ok) {}
1720	–	}
1721	–	}
1722	–
1678		/**
1679		* For use as ThreadFactory in constructors
1680		*/
#	Line 1733 | Line 1688 | public class JSR166TestCase extends Test
1688		boolean isDone();
1689		}
1690
1736	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1737	–	return new TrackedRunnable() {
1738	–	private volatile boolean done = false;
1739	–	public boolean isDone() { return done; }
1740	–	public void run() {
1741	–	try {
1742	–	delay(timeoutMillis);
1743	–	done = true;
1744	–	} catch (InterruptedException ok) {}
1745	–	}
1746	–	};
1747	–	}
1748	–
1749	–	public static class TrackedShortRunnable implements Runnable {
1750	–	public volatile boolean done = false;
1751	–	public void run() {
1752	–	try {
1753	–	delay(SHORT_DELAY_MS);
1754	–	done = true;
1755	–	} catch (InterruptedException ok) {}
1756	–	}
1757	–	}
1758	–
1759	–	public static class TrackedSmallRunnable implements Runnable {
1760	–	public volatile boolean done = false;
1761	–	public void run() {
1762	–	try {
1763	–	delay(SMALL_DELAY_MS);
1764	–	done = true;
1765	–	} catch (InterruptedException ok) {}
1766	–	}
1767	–	}
1768	–
1769	–	public static class TrackedMediumRunnable implements Runnable {
1770	–	public volatile boolean done = false;
1771	–	public void run() {
1772	–	try {
1773	–	delay(MEDIUM_DELAY_MS);
1774	–	done = true;
1775	–	} catch (InterruptedException ok) {}
1776	–	}
1777	–	}
1778	–
1779	–	public static class TrackedLongRunnable implements Runnable {
1780	–	public volatile boolean done = false;
1781	–	public void run() {
1782	–	try {
1783	–	delay(LONG_DELAY_MS);
1784	–	done = true;
1785	–	} catch (InterruptedException ok) {}
1786	–	}
1787	–	}
1788	–
1691		public static class TrackedNoOpRunnable implements Runnable {
1692		public volatile boolean done = false;
1693		public void run() {
#	Line 1793 | Line 1695 | public class JSR166TestCase extends Test
1695		}
1696		}
1697
1796	–	public static class TrackedCallable implements Callable {
1797	–	public volatile boolean done = false;
1798	–	public Object call() {
1799	–	try {
1800	–	delay(SMALL_DELAY_MS);
1801	–	done = true;
1802	–	} catch (InterruptedException ok) {}
1803	–	return Boolean.TRUE;
1804	–	}
1805	–	}
1806	–
1698		/**
1699		* Analog of CheckedRunnable for RecursiveAction
1700		*/
#	Line 1870 | Line 1761 | public class JSR166TestCase extends Test
1761		assertEquals(0, q.size());
1762		assertNull(q.peek());
1763		assertNull(q.poll());
1764	<	assertNull(q.poll(0, MILLISECONDS));
1764	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1765		assertEquals(q.toString(), "[]");
1766		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1767		assertFalse(q.iterator().hasNext());
#	Line 2021 | Line 1912 | public class JSR166TestCase extends Test
1912		static <T> void shuffle(T[] array) {
1913		Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1914		}
1915	+
1916	+	// --- Shared assertions for Executor tests ---
1917	+
1918	+	/**
1919	+	* Returns maximum number of tasks that can be submitted to given
1920	+	* pool (with bounded queue) before saturation (when submission
1921	+	* throws RejectedExecutionException).
1922	+	*/
1923	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1924	+	BlockingQueue<Runnable> q = pool.getQueue();
1925	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1926	+	}
1927	+
1928	+	@SuppressWarnings("FutureReturnValueIgnored")
1929	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1930	+	try {
1931	+	e.execute((Runnable) null);
1932	+	shouldThrow();
1933	+	} catch (NullPointerException success) {}
1934	+
1935	+	if (! (e instanceof ExecutorService)) return;
1936	+	ExecutorService es = (ExecutorService) e;
1937	+	try {
1938	+	es.submit((Runnable) null);
1939	+	shouldThrow();
1940	+	} catch (NullPointerException success) {}
1941	+	try {
1942	+	es.submit((Runnable) null, Boolean.TRUE);
1943	+	shouldThrow();
1944	+	} catch (NullPointerException success) {}
1945	+	try {
1946	+	es.submit((Callable) null);
1947	+	shouldThrow();
1948	+	} catch (NullPointerException success) {}
1949	+
1950	+	if (! (e instanceof ScheduledExecutorService)) return;
1951	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1952	+	try {
1953	+	ses.schedule((Runnable) null,
1954	+	randomTimeout(), randomTimeUnit());
1955	+	shouldThrow();
1956	+	} catch (NullPointerException success) {}
1957	+	try {
1958	+	ses.schedule((Callable) null,
1959	+	randomTimeout(), randomTimeUnit());
1960	+	shouldThrow();
1961	+	} catch (NullPointerException success) {}
1962	+	try {
1963	+	ses.scheduleAtFixedRate((Runnable) null,
1964	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1965	+	shouldThrow();
1966	+	} catch (NullPointerException success) {}
1967	+	try {
1968	+	ses.scheduleWithFixedDelay((Runnable) null,
1969	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1970	+	shouldThrow();
1971	+	} catch (NullPointerException success) {}
1972	+	}
1973	+
1974	+	void setRejectedExecutionHandler(
1975	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1976	+	p.setRejectedExecutionHandler(handler);
1977	+	assertSame(handler, p.getRejectedExecutionHandler());
1978	+	}
1979	+
1980	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1981	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1982	+	final long savedTaskCount = p.getTaskCount();
1983	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1984	+	final int savedQueueSize = p.getQueue().size();
1985	+	final boolean stock = (p.getClass().getClassLoader() == null);
1986	+
1987	+	Runnable r = () -> {};
1988	+	Callable<Boolean> c = () -> Boolean.TRUE;
1989	+
1990	+	class Recorder implements RejectedExecutionHandler {
1991	+	public volatile Runnable r = null;
1992	+	public volatile ThreadPoolExecutor p = null;
1993	+	public void reset() { r = null; p = null; }
1994	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1995	+	assertNull(this.r);
1996	+	assertNull(this.p);
1997	+	this.r = r;
1998	+	this.p = p;
1999	+	}
2000	+	}
2001	+
2002	+	// check custom handler is invoked exactly once per task
2003	+	Recorder recorder = new Recorder();
2004	+	setRejectedExecutionHandler(p, recorder);
2005	+	for (int i = 2; i--> 0; ) {
2006	+	recorder.reset();
2007	+	p.execute(r);
2008	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2009	+	assertSame(r, recorder.r);
2010	+	assertSame(p, recorder.p);
2011	+
2012	+	recorder.reset();
2013	+	assertFalse(p.submit(r).isDone());
2014	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2015	+	assertSame(p, recorder.p);
2016	+
2017	+	recorder.reset();
2018	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2019	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2020	+	assertSame(p, recorder.p);
2021	+
2022	+	recorder.reset();
2023	+	assertFalse(p.submit(c).isDone());
2024	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2025	+	assertSame(p, recorder.p);
2026	+
2027	+	if (p instanceof ScheduledExecutorService) {
2028	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2029	+	ScheduledFuture<?> future;
2030	+
2031	+	recorder.reset();
2032	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2033	+	assertFalse(future.isDone());
2034	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2035	+	assertSame(p, recorder.p);
2036	+
2037	+	recorder.reset();
2038	+	future = s.schedule(c, 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.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2045	+	assertFalse(future.isDone());
2046	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2047	+	assertSame(p, recorder.p);
2048	+
2049	+	recorder.reset();
2050	+	future = s.scheduleWithFixedDelay(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	+	}
2056	+
2057	+	// Checking our custom handler above should be sufficient, but
2058	+	// we add some integration tests of standard handlers.
2059	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2060	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2061	+
2062	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2063	+	try {
2064	+	p.execute(setThread);
2065	+	shouldThrow();
2066	+	} catch (RejectedExecutionException success) {}
2067	+	assertNull(thread.get());
2068	+
2069	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2070	+	p.execute(setThread);
2071	+	assertNull(thread.get());
2072	+
2073	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2074	+	p.execute(setThread);
2075	+	if (p.isShutdown())
2076	+	assertNull(thread.get());
2077	+	else
2078	+	assertSame(Thread.currentThread(), thread.get());
2079	+
2080	+	setRejectedExecutionHandler(p, savedHandler);
2081	+
2082	+	// check that pool was not perturbed by handlers
2083	+	assertEquals(savedTaskCount, p.getTaskCount());
2084	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2085	+	assertEquals(savedQueueSize, p.getQueue().size());
2086	+	}
2087		}

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