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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.226 by jsr166, Sun May 14 00:37:42 2017 UTC vs.
Revision 1.236 by jsr166, Wed Aug 16 17:18:34 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	–	/**
1107	–	* Checks that the threads do not terminate within the default
1108	–	* millisecond delay of {@code timeoutMillis()}.
1109	–	*/
1110	–	void assertThreadsStayAlive(Thread... threads) {
1111	–	assertThreadsStayAlive(timeoutMillis(), threads);
1112	–	}
1113	–
1114	–	/**
1115	–	* Checks that the threads do not terminate within the given millisecond delay.
1116	–	*/
1117	–	void assertThreadsStayAlive(long millis, Thread... threads) {
1118	–	try {
1119	–	// No need to optimize the failing case via Thread.join.
1120	–	delay(millis);
1121	–	for (Thread thread : threads)
1122	–	assertTrue(thread.isAlive());
1123	–	} catch (InterruptedException fail) {
1124	–	threadFail("Unexpected InterruptedException");
1125	–	}
1126	–	}
1127	–
1128	–	/**
1119		* Checks that future.get times out, with the default timeout of
1120		* {@code timeoutMillis()}.
1121		*/
#	Line 1668 | Line 1658 | public class JSR166TestCase extends Test
1658		public String call() { throw new NullPointerException(); }
1659		}
1660
1671	–	public static class CallableOne implements Callable<Integer> {
1672	–	public Integer call() { return one; }
1673	–	}
1674	–
1675	–	public class ShortRunnable extends CheckedRunnable {
1676	–	protected void realRun() throws Throwable {
1677	–	delay(SHORT_DELAY_MS);
1678	–	}
1679	–	}
1680	–
1681	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1682	–	protected void realRun() throws InterruptedException {
1683	–	delay(SHORT_DELAY_MS);
1684	–	}
1685	–	}
1686	–
1687	–	public class SmallRunnable extends CheckedRunnable {
1688	–	protected void realRun() throws Throwable {
1689	–	delay(SMALL_DELAY_MS);
1690	–	}
1691	–	}
1692	–
1661		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1662		protected void realRun() {
1663		try {
#	Line 1698 | Line 1666 | public class JSR166TestCase extends Test
1666		}
1667		}
1668
1701	–	public class SmallCallable extends CheckedCallable {
1702	–	protected Object realCall() throws InterruptedException {
1703	–	delay(SMALL_DELAY_MS);
1704	–	return Boolean.TRUE;
1705	–	}
1706	–	}
1707	–
1708	–	public class MediumRunnable extends CheckedRunnable {
1709	–	protected void realRun() throws Throwable {
1710	–	delay(MEDIUM_DELAY_MS);
1711	–	}
1712	–	}
1713	–
1714	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1715	–	protected void realRun() throws InterruptedException {
1716	–	delay(MEDIUM_DELAY_MS);
1717	–	}
1718	–	}
1719	–
1669		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1670		return new CheckedRunnable() {
1671		protected void realRun() {
#	Line 1726 | Line 1675 | public class JSR166TestCase extends Test
1675		}};
1676		}
1677
1729	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1730	–	protected void realRun() {
1731	–	try {
1732	–	delay(MEDIUM_DELAY_MS);
1733	–	} catch (InterruptedException ok) {}
1734	–	}
1735	–	}
1736	–
1737	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1738	–	protected void realRun() {
1739	–	try {
1740	–	delay(LONG_DELAY_MS);
1741	–	} catch (InterruptedException ok) {}
1742	–	}
1743	–	}
1744	–
1678		/**
1679		* For use as ThreadFactory in constructors
1680		*/
#	Line 1755 | Line 1688 | public class JSR166TestCase extends Test
1688		boolean isDone();
1689		}
1690
1758	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1759	–	return new TrackedRunnable() {
1760	–	private volatile boolean done = false;
1761	–	public boolean isDone() { return done; }
1762	–	public void run() {
1763	–	try {
1764	–	delay(timeoutMillis);
1765	–	done = true;
1766	–	} catch (InterruptedException ok) {}
1767	–	}
1768	–	};
1769	–	}
1770	–
1771	–	public static class TrackedShortRunnable implements Runnable {
1772	–	public volatile boolean done = false;
1773	–	public void run() {
1774	–	try {
1775	–	delay(SHORT_DELAY_MS);
1776	–	done = true;
1777	–	} catch (InterruptedException ok) {}
1778	–	}
1779	–	}
1780	–
1781	–	public static class TrackedSmallRunnable implements Runnable {
1782	–	public volatile boolean done = false;
1783	–	public void run() {
1784	–	try {
1785	–	delay(SMALL_DELAY_MS);
1786	–	done = true;
1787	–	} catch (InterruptedException ok) {}
1788	–	}
1789	–	}
1790	–
1791	–	public static class TrackedMediumRunnable implements Runnable {
1792	–	public volatile boolean done = false;
1793	–	public void run() {
1794	–	try {
1795	–	delay(MEDIUM_DELAY_MS);
1796	–	done = true;
1797	–	} catch (InterruptedException ok) {}
1798	–	}
1799	–	}
1800	–
1801	–	public static class TrackedLongRunnable implements Runnable {
1802	–	public volatile boolean done = false;
1803	–	public void run() {
1804	–	try {
1805	–	delay(LONG_DELAY_MS);
1806	–	done = true;
1807	–	} catch (InterruptedException ok) {}
1808	–	}
1809	–	}
1810	–
1691		public static class TrackedNoOpRunnable implements Runnable {
1692		public volatile boolean done = false;
1693		public void run() {
#	Line 1815 | Line 1695 | public class JSR166TestCase extends Test
1695		}
1696		}
1697
1818	–	public static class TrackedCallable implements Callable {
1819	–	public volatile boolean done = false;
1820	–	public Object call() {
1821	–	try {
1822	–	delay(SMALL_DELAY_MS);
1823	–	done = true;
1824	–	} catch (InterruptedException ok) {}
1825	–	return Boolean.TRUE;
1826	–	}
1827	–	}
1828	–
1698		/**
1699		* Analog of CheckedRunnable for RecursiveAction
1700		*/
#	Line 1892 | 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 2043 | 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	+	/**
1917	+	* Returns the same String as would be returned by {@link
1918	+	* Object#toString}, whether or not the given object's class
1919	+	* overrides toString().
1920	+	*
1921	+	* @see System#identityHashCode
1922	+	*/
1923	+	static String identityString(Object x) {
1924	+	return x.getClass().getName()
1925	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1926	+	}
1927	+
1928	+	// --- Shared assertions for Executor tests ---
1929	+
1930	+	/**
1931	+	* Returns maximum number of tasks that can be submitted to given
1932	+	* pool (with bounded queue) before saturation (when submission
1933	+	* throws RejectedExecutionException).
1934	+	*/
1935	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1936	+	BlockingQueue<Runnable> q = pool.getQueue();
1937	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1938	+	}
1939	+
1940	+	@SuppressWarnings("FutureReturnValueIgnored")
1941	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1942	+	try {
1943	+	e.execute((Runnable) null);
1944	+	shouldThrow();
1945	+	} catch (NullPointerException success) {}
1946	+
1947	+	if (! (e instanceof ExecutorService)) return;
1948	+	ExecutorService es = (ExecutorService) e;
1949	+	try {
1950	+	es.submit((Runnable) null);
1951	+	shouldThrow();
1952	+	} catch (NullPointerException success) {}
1953	+	try {
1954	+	es.submit((Runnable) null, Boolean.TRUE);
1955	+	shouldThrow();
1956	+	} catch (NullPointerException success) {}
1957	+	try {
1958	+	es.submit((Callable) null);
1959	+	shouldThrow();
1960	+	} catch (NullPointerException success) {}
1961	+
1962	+	if (! (e instanceof ScheduledExecutorService)) return;
1963	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1964	+	try {
1965	+	ses.schedule((Runnable) null,
1966	+	randomTimeout(), randomTimeUnit());
1967	+	shouldThrow();
1968	+	} catch (NullPointerException success) {}
1969	+	try {
1970	+	ses.schedule((Callable) null,
1971	+	randomTimeout(), randomTimeUnit());
1972	+	shouldThrow();
1973	+	} catch (NullPointerException success) {}
1974	+	try {
1975	+	ses.scheduleAtFixedRate((Runnable) null,
1976	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1977	+	shouldThrow();
1978	+	} catch (NullPointerException success) {}
1979	+	try {
1980	+	ses.scheduleWithFixedDelay((Runnable) null,
1981	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1982	+	shouldThrow();
1983	+	} catch (NullPointerException success) {}
1984	+	}
1985	+
1986	+	void setRejectedExecutionHandler(
1987	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1988	+	p.setRejectedExecutionHandler(handler);
1989	+	assertSame(handler, p.getRejectedExecutionHandler());
1990	+	}
1991	+
1992	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1993	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1994	+	final long savedTaskCount = p.getTaskCount();
1995	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1996	+	final int savedQueueSize = p.getQueue().size();
1997	+	final boolean stock = (p.getClass().getClassLoader() == null);
1998	+
1999	+	Runnable r = () -> {};
2000	+	Callable<Boolean> c = () -> Boolean.TRUE;
2001	+
2002	+	class Recorder implements RejectedExecutionHandler {
2003	+	public volatile Runnable r = null;
2004	+	public volatile ThreadPoolExecutor p = null;
2005	+	public void reset() { r = null; p = null; }
2006	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2007	+	assertNull(this.r);
2008	+	assertNull(this.p);
2009	+	this.r = r;
2010	+	this.p = p;
2011	+	}
2012	+	}
2013	+
2014	+	// check custom handler is invoked exactly once per task
2015	+	Recorder recorder = new Recorder();
2016	+	setRejectedExecutionHandler(p, recorder);
2017	+	for (int i = 2; i--> 0; ) {
2018	+	recorder.reset();
2019	+	p.execute(r);
2020	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2021	+	assertSame(r, recorder.r);
2022	+	assertSame(p, recorder.p);
2023	+
2024	+	recorder.reset();
2025	+	assertFalse(p.submit(r).isDone());
2026	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2027	+	assertSame(p, recorder.p);
2028	+
2029	+	recorder.reset();
2030	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2031	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2032	+	assertSame(p, recorder.p);
2033	+
2034	+	recorder.reset();
2035	+	assertFalse(p.submit(c).isDone());
2036	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2037	+	assertSame(p, recorder.p);
2038	+
2039	+	if (p instanceof ScheduledExecutorService) {
2040	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2041	+	ScheduledFuture<?> future;
2042	+
2043	+	recorder.reset();
2044	+	future = s.schedule(r, 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.schedule(c, randomTimeout(), randomTimeUnit());
2051	+	assertFalse(future.isDone());
2052	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2053	+	assertSame(p, recorder.p);
2054	+
2055	+	recorder.reset();
2056	+	future = s.scheduleAtFixedRate(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	+	recorder.reset();
2062	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2063	+	assertFalse(future.isDone());
2064	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2065	+	assertSame(p, recorder.p);
2066	+	}
2067	+	}
2068	+
2069	+	// Checking our custom handler above should be sufficient, but
2070	+	// we add some integration tests of standard handlers.
2071	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2072	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2073	+
2074	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2075	+	try {
2076	+	p.execute(setThread);
2077	+	shouldThrow();
2078	+	} catch (RejectedExecutionException success) {}
2079	+	assertNull(thread.get());
2080	+
2081	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2082	+	p.execute(setThread);
2083	+	assertNull(thread.get());
2084	+
2085	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2086	+	p.execute(setThread);
2087	+	if (p.isShutdown())
2088	+	assertNull(thread.get());
2089	+	else
2090	+	assertSame(Thread.currentThread(), thread.get());
2091	+
2092	+	setRejectedExecutionHandler(p, savedHandler);
2093	+
2094	+	// check that pool was not perturbed by handlers
2095	+	assertEquals(savedTaskCount, p.getTaskCount());
2096	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2097	+	assertEquals(savedQueueSize, p.getQueue().size());
2098	+	}
2099		}

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