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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.142 by jsr166, Tue Sep 8 16:53:43 2015 UTC vs.
Revision 1.157 by jsr166, Sat Oct 3 22:20:05 2015 UTC

#	Line 7 | Line 7
7		*/
8
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	+	import static java.util.concurrent.TimeUnit.MINUTES;
11		import static java.util.concurrent.TimeUnit.NANOSECONDS;
12
13		import java.io.ByteArrayInputStream;
#	Line 15 | Line 16 | import java.io.ObjectInputStream;
16		import java.io.ObjectOutputStream;
17		import java.lang.management.ManagementFactory;
18		import java.lang.management.ThreadInfo;
19	+	import java.lang.management.ThreadMXBean;
20		import java.lang.reflect.Constructor;
21		import java.lang.reflect.Method;
22		import java.lang.reflect.Modifier;
#	Line 40 | Line 42 | import java.util.concurrent.CyclicBarrie
42		import java.util.concurrent.ExecutionException;
43		import java.util.concurrent.Executors;
44		import java.util.concurrent.ExecutorService;
45	+	import java.util.concurrent.ForkJoinPool;
46		import java.util.concurrent.Future;
47		import java.util.concurrent.RecursiveAction;
48		import java.util.concurrent.RecursiveTask;
#	Line 67 | Line 70 | import junit.framework.TestSuite;
70		*
71		* <ol>
72		*
73	<	* <li> All assertions in code running in generated threads must use
73	>	* <li>All assertions in code running in generated threads must use
74		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
75		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
76		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
77		* particularly recommended) for other code to use these forms too.
78		* Only the most typically used JUnit assertion methods are defined
79	<	* this way, but enough to live with.</li>
79	>	* this way, but enough to live with.
80		*
81	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
81	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
82		* to invoke {@code super.setUp} and {@code super.tearDown} within
83		* them. These methods are used to clear and check for thread
84	<	* assertion failures.</li>
84	>	* assertion failures.
85		*
86		* <li>All delays and timeouts must use one of the constants {@code
87		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 89 | Line 92 | import junit.framework.TestSuite;
92		* is always discriminable as larger than SHORT and smaller than
93		* MEDIUM.  And so on. These constants are set to conservative values,
94		* but even so, if there is ever any doubt, they can all be increased
95	<	* in one spot to rerun tests on slower platforms.</li>
95	>	* in one spot to rerun tests on slower platforms.
96		*
97	<	* <li> All threads generated must be joined inside each test case
97	>	* <li>All threads generated must be joined inside each test case
98		* method (or {@code fail} to do so) before returning from the
99		* method. The {@code joinPool} method can be used to do this when
100	<	* using Executors.</li>
100	>	* using Executors.
101		*
102		* </ol>
103		*
104		* <p><b>Other notes</b>
105		* <ul>
106		*
107	<	* <li> Usually, there is one testcase method per JSR166 method
107	>	* <li>Usually, there is one testcase method per JSR166 method
108		* covering "normal" operation, and then as many exception-testing
109		* methods as there are exceptions the method can throw. Sometimes
110		* there are multiple tests per JSR166 method when the different
111		* "normal" behaviors differ significantly. And sometimes testcases
112		* cover multiple methods when they cannot be tested in
113	<	* isolation.</li>
113	>	* isolation.
114		*
115	<	* <li> The documentation style for testcases is to provide as javadoc
115	>	* <li>The documentation style for testcases is to provide as javadoc
116		* a simple sentence or two describing the property that the testcase
117		* method purports to test. The javadocs do not say anything about how
118	<	* the property is tested. To find out, read the code.</li>
118	>	* the property is tested. To find out, read the code.
119		*
120	<	* <li> These tests are "conformance tests", and do not attempt to
120	>	* <li>These tests are "conformance tests", and do not attempt to
121		* test throughput, latency, scalability or other performance factors
122		* (see the separate "jtreg" tests for a set intended to check these
123		* for the most central aspects of functionality.) So, most tests use
124		* the smallest sensible numbers of threads, collection sizes, etc
125	<	* needed to check basic conformance.</li>
125	>	* needed to check basic conformance.
126		*
127		* <li>The test classes currently do not declare inclusion in
128		* any particular package to simplify things for people integrating
129	<	* them in TCK test suites.</li>
129	>	* them in TCK test suites.
130		*
131	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
132	<	* runs all JSR166 unit tests.</li>
131	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
132	>	* runs all JSR166 unit tests.
133		*
134		* </ul>
135		*/
#	Line 185 | Line 188 | public class JSR166TestCase extends Test
188		return (regex == null) ? null : Pattern.compile(regex);
189		}
190
191	<	protected void runTest() throws Throwable {
191	>	static volatile TestCase currentTestCase;
192	>	static {
193	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
194	>	// avoid spurious reports with enormous runsPerTest
195	>	final int timeoutMinutes = Math.max(runsPerTest / 10, 1);
196	>	for (TestCase lastTestCase = currentTestCase;;) {
197	>	try { MINUTES.sleep(timeoutMinutes); }
198	>	catch (InterruptedException unexpected) { break; }
199	>	if (lastTestCase == currentTestCase) {
200	>	System.err.println
201	>	("Looks like we're stuck running test: "
202	>	+ lastTestCase);
203	>	dumpTestThreads();
204	>	}
205	>	lastTestCase = currentTestCase;
206	>	}}};
207	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
208	>	thread.setDaemon(true);
209	>	thread.start();
210	>	}
211	>
212	>	public void runBare() throws Throwable {
213	>	currentTestCase = this;
214		if (methodFilter == null
215	<	|| methodFilter.matcher(toString()).find()) {
216	<	for (int i = 0; i < runsPerTest; i++) {
217	<	if (profileTests)
218	<	runTestProfiled();
219	<	else
220	<	super.runTest();
221	<	}
215	>	|| methodFilter.matcher(toString()).find())
216	>	super.runBare();
217	>	}
218	>
219	>	protected void runTest() throws Throwable {
220	>	for (int i = 0; i < runsPerTest; i++) {
221	>	if (profileTests)
222	>	runTestProfiled();
223	>	else
224	>	super.runTest();
225		}
226		}
227
228		protected void runTestProfiled() throws Throwable {
229	<	// Warmup run, notably to trigger all needed classloading.
230	<	super.runTest();
203	<	long t0 = System.nanoTime();
204	<	try {
229	>	for (int i = 0; i < 2; i++) {
230	>	long startTime = System.nanoTime();
231		super.runTest();
232	<	} finally {
233	<	long elapsedMillis = millisElapsedSince(t0);
234	<	if (elapsedMillis >= profileThreshold)
232	>	long elapsedMillis = millisElapsedSince(startTime);
233	>	if (elapsedMillis < profileThreshold)
234	>	break;
235	>	// Never report first run of any test; treat it as a
236	>	// warmup run, notably to trigger all needed classloading,
237	>	if (i > 0)
238		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
239		}
240		}
#	Line 455 | Line 484 | public class JSR166TestCase extends Test
484		} else {
485		return new TestSuite();
486		}
458	–
487		}
488
489		// Delays for timing-dependent tests, in milliseconds.
#	Line 513 | Line 541 | public class JSR166TestCase extends Test
541		* the same test have no effect.
542		*/
543		public void threadRecordFailure(Throwable t) {
544	+	dumpTestThreads();
545		threadFailure.compareAndSet(null, t);
546		}
547
#	Line 520 | Line 549 | public class JSR166TestCase extends Test
549		setDelays();
550		}
551
552	+	void tearDownFail(String format, Object... args) {
553	+	String msg = toString() + ": " + String.format(format, args);
554	+	System.err.println(msg);
555	+	dumpTestThreads();
556	+	throw new AssertionFailedError(msg);
557	+	}
558	+
559		/**
560		* Extra checks that get done for all test cases.
561		*
#	Line 547 | Line 583 | public class JSR166TestCase extends Test
583		}
584
585		if (Thread.interrupted())
586	<	throw new AssertionFailedError("interrupt status set in main thread");
586	>	tearDownFail("interrupt status set in main thread");
587
588		checkForkJoinPoolThreadLeaks();
589		}
#	Line 556 | Line 592 | public class JSR166TestCase extends Test
592		* Finds missing try { ... } finally { joinPool(e); }
593		*/
594		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
595	<	Thread[] survivors = new Thread[5];
595	>	Thread[] survivors = new Thread[7];
596		int count = Thread.enumerate(survivors);
597		for (int i = 0; i < count; i++) {
598		Thread thread = survivors[i];
#	Line 564 | Line 600 | public class JSR166TestCase extends Test
600		if (name.startsWith("ForkJoinPool-")) {
601		// give thread some time to terminate
602		thread.join(LONG_DELAY_MS);
603	<	if (!thread.isAlive()) continue;
604	<	throw new AssertionFailedError
605	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
570	<	toString(), name));
603	>	if (thread.isAlive())
604	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
605	>	thread);
606		}
607		}
608	+
609	+	if (!ForkJoinPool.commonPool()
610	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
611	+	tearDownFail("ForkJoin common pool thread stuck");
612		}
613
614		/**
#	Line 582 | Line 621 | public class JSR166TestCase extends Test
621		fail(reason);
622		} catch (AssertionFailedError t) {
623		threadRecordFailure(t);
624	<	fail(reason);
624	>	throw t;
625		}
626		}
627
#	Line 728 | Line 767 | public class JSR166TestCase extends Test
767		}
768
769		/**
770	+	* Allows use of try-with-resources with per-test thread pools.
771	+	*/
772	+	static class PoolCloser<T extends ExecutorService>
773	+	implements AutoCloseable {
774	+	public final T pool;
775	+	public PoolCloser(T pool) { this.pool = pool; }
776	+	public void close() { joinPool(pool); }
777	+	}
778	+
779	+	/**
780		* Waits out termination of a thread pool or fails doing so.
781		*/
782	<	void joinPool(ExecutorService pool) {
782	>	static void joinPool(ExecutorService pool) {
783		try {
784		pool.shutdown();
785		if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
#	Line 752 | Line 801 | public class JSR166TestCase extends Test
801		* necessarily individually slow because they must block.
802		*/
803		void testInParallel(Action ... actions) {
804	<	ExecutorService pool = Executors.newCachedThreadPool();
805	<	try {
804	>	try (PoolCloser<ExecutorService> poolCloser
805	>	= new PoolCloser<>(Executors.newCachedThreadPool())) {
806	>	ExecutorService pool = poolCloser.pool;
807		ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
808		for (final Action action : actions)
809		futures.add(pool.submit(new CheckedRunnable() {
#	Line 766 | Line 816 | public class JSR166TestCase extends Test
816		} catch (Exception ex) {
817		threadUnexpectedException(ex);
818		}
769	–	} finally {
770	–	joinPool(pool);
819		}
820		}
821
822		/**
823	<	* A debugging tool to print all stack traces, as jstack does.
823	>	* A debugging tool to print stack traces of most threads, as jstack does.
824	>	* Uninteresting threads are filtered out.
825		*/
826	<	static void printAllStackTraces() {
827	<	for (ThreadInfo info :
828	<	ManagementFactory.getThreadMXBean()
829	<	.dumpAllThreads(true, true))
826	>	static void dumpTestThreads() {
827	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
828	>	System.err.println("------ stacktrace dump start ------");
829	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
830	>	String name = info.getThreadName();
831	>	if ("Signal Dispatcher".equals(name))
832	>	continue;
833	>	if ("Reference Handler".equals(name)
834	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
835	>	continue;
836	>	if ("Finalizer".equals(name)
837	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
838	>	continue;
839	>	if ("checkForWedgedTest".equals(name))
840	>	continue;
841		System.err.print(info);
842	+	}
843	+	System.err.println("------ stacktrace dump end ------");
844		}
845
846		/**
#	Line 1223 | Line 1285 | public class JSR166TestCase extends Test
1285		public static final String TEST_STRING = "a test string";
1286
1287		public static class StringTask implements Callable<String> {
1288	<	public String call() { return TEST_STRING; }
1288	>	final String value;
1289	>	public StringTask() { this(TEST_STRING); }
1290	>	public StringTask(String value) { this.value = value; }
1291	>	public String call() { return value; }
1292		}
1293
1294		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1236 | Line 1301 | public class JSR166TestCase extends Test
1301		}};
1302		}
1303
1304	+	public Runnable countDowner(final CountDownLatch latch) {
1305	+	return new CheckedRunnable() {
1306	+	public void realRun() throws InterruptedException {
1307	+	latch.countDown();
1308	+	}};
1309	+	}
1310	+
1311		public Runnable awaiter(final CountDownLatch latch) {
1312		return new CheckedRunnable() {
1313		public void realRun() throws InterruptedException {

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