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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.233 by jsr166, Sat Jul 15 23:15:21 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;
#	Line 1111 | Line 1116 | public class JSR166TestCase extends Test
1116		}
1117
1118		/**
1114	–	* Checks that thread does not terminate within the default
1115	–	* millisecond delay of {@code timeoutMillis()}.
1116	–	* TODO: REMOVEME
1117	–	*/
1118	–	void assertThreadStaysAlive(Thread thread) {
1119	–	assertThreadStaysAlive(thread, timeoutMillis());
1120	–	}
1121	–
1122	–	/**
1123	–	* Checks that thread does not terminate within the given millisecond delay.
1124	–	* TODO: REMOVEME
1125	–	*/
1126	–	void assertThreadStaysAlive(Thread thread, long millis) {
1127	–	try {
1128	–	// No need to optimize the failing case via Thread.join.
1129	–	delay(millis);
1130	–	assertTrue(thread.isAlive());
1131	–	} catch (InterruptedException fail) {
1132	–	threadFail("Unexpected InterruptedException");
1133	–	}
1134	–	}
1135	–
1136	–	/**
1137	–	* Checks that the threads do not terminate within the default
1138	–	* millisecond delay of {@code timeoutMillis()}.
1139	–	* TODO: REMOVEME
1140	–	*/
1141	–	void assertThreadsStayAlive(Thread... threads) {
1142	–	assertThreadsStayAlive(timeoutMillis(), threads);
1143	–	}
1144	–
1145	–	/**
1146	–	* Checks that the threads do not terminate within the given millisecond delay.
1147	–	* TODO: REMOVEME
1148	–	*/
1149	–	void assertThreadsStayAlive(long millis, Thread... threads) {
1150	–	try {
1151	–	// No need to optimize the failing case via Thread.join.
1152	–	delay(millis);
1153	–	for (Thread thread : threads)
1154	–	assertTrue(thread.isAlive());
1155	–	} catch (InterruptedException fail) {
1156	–	threadFail("Unexpected InterruptedException");
1157	–	}
1158	–	}
1159	–
1160	–	/**
1119		* Checks that future.get times out, with the default timeout of
1120		* {@code timeoutMillis()}.
1121		*/
#	Line 1951 | Line 1909 | public class JSR166TestCase extends Test
1909		1000L, MILLISECONDS,
1910		new SynchronousQueue<Runnable>());
1911
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
#	Line 1961 | Line 1937 | public class JSR166TestCase extends Test
1937		return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1938		}
1939
1940	<	static <T> void shuffle(T[] array) {
1941	<	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
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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