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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.134 by jsr166, Sun Jun 14 20:58:14 2015 UTC vs.
Revision 1.234 by jsr166, Mon Jul 17 22:27:31 2017 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by Doug Lea with assistance from members of JCP JSR-166
3	<	* Expert Group and released to the public domain, as explained at
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		* Other contributors include Andrew Wright, Jeffrey Hayes,
7		* Pat Fisher, Mike Judd.
8		*/
9
10	+	/*
11	+	* @test
12	+	* @summary JSR-166 tck tests, in a number of variations.
13	+	*          The first is the conformance testing variant,
14	+	*          while others also test implementation details.
15	+	* @build *
16	+	* @modules java.management
17	+	* @run junit/othervm/timeout=1000 JSR166TestCase
18	+	* @run junit/othervm/timeout=1000
19	+	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	+	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	+	*      -Djsr166.testImplementationDetails=true
22	+	*      JSR166TestCase
23	+	* @run junit/othervm/timeout=1000
24	+	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	+	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	+	*      -Djsr166.testImplementationDetails=true
27	+	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	+	*      JSR166TestCase
29	+	* @run junit/othervm/timeout=1000
30	+	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	+	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	+	*      -Djsr166.testImplementationDetails=true
33	+	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	+	*      -Djava.util.secureRandomSeed=true
35	+	*      JSR166TestCase
36	+	* @run junit/othervm/timeout=1000/policy=tck.policy
37	+	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	+	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	+	*      -Djsr166.testImplementationDetails=true
40	+	*      JSR166TestCase
41	+	*/
42	+
43		import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	+	import static java.util.concurrent.TimeUnit.MINUTES;
45		import static java.util.concurrent.TimeUnit.NANOSECONDS;
46
47		import java.io.ByteArrayInputStream;
#	Line 15 | Line 50 | import java.io.ObjectInputStream;
50		import java.io.ObjectOutputStream;
51		import java.lang.management.ManagementFactory;
52		import java.lang.management.ThreadInfo;
53	+	import java.lang.management.ThreadMXBean;
54		import java.lang.reflect.Constructor;
55		import java.lang.reflect.Method;
56		import java.lang.reflect.Modifier;
#	Line 27 | Line 63 | import java.security.ProtectionDomain;
63		import java.security.SecurityPermission;
64		import java.util.ArrayList;
65		import java.util.Arrays;
66	+	import java.util.Collection;
67	+	import java.util.Collections;
68		import java.util.Date;
69		import java.util.Enumeration;
70		import java.util.Iterator;
#	Line 37 | Line 75 | import java.util.concurrent.BlockingQueu
75		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;
100		import java.util.regex.Pattern;
101
#	Line 65 | Line 115 | import junit.framework.TestSuite;
115		*
116		* <ol>
117		*
118	<	* <li> All assertions in code running in generated threads must use
118	>	* <li>All assertions in code running in generated threads must use
119		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
120		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
121		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
122		* particularly recommended) for other code to use these forms too.
123		* Only the most typically used JUnit assertion methods are defined
124	<	* this way, but enough to live with.</li>
124	>	* this way, but enough to live with.
125		*
126	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
126	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
127		* to invoke {@code super.setUp} and {@code super.tearDown} within
128		* them. These methods are used to clear and check for thread
129	<	* assertion failures.</li>
129	>	* assertion failures.
130		*
131		* <li>All delays and timeouts must use one of the constants {@code
132		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 87 | Line 137 | import junit.framework.TestSuite;
137		* is always discriminable as larger than SHORT and smaller than
138		* MEDIUM.  And so on. These constants are set to conservative values,
139		* but even so, if there is ever any doubt, they can all be increased
140	<	* in one spot to rerun tests on slower platforms.</li>
140	>	* in one spot to rerun tests on slower platforms.
141		*
142	<	* <li> All threads generated must be joined inside each test case
142	>	* <li>All threads generated must be joined inside each test case
143		* method (or {@code fail} to do so) before returning from the
144		* method. The {@code joinPool} method can be used to do this when
145	<	* using Executors.</li>
145	>	* using Executors.
146		*
147		* </ol>
148		*
149		* <p><b>Other notes</b>
150		* <ul>
151		*
152	<	* <li> Usually, there is one testcase method per JSR166 method
152	>	* <li>Usually, there is one testcase method per JSR166 method
153		* covering "normal" operation, and then as many exception-testing
154		* methods as there are exceptions the method can throw. Sometimes
155		* there are multiple tests per JSR166 method when the different
156		* "normal" behaviors differ significantly. And sometimes testcases
157	<	* cover multiple methods when they cannot be tested in
108	<	* isolation.</li>
157	>	* cover multiple methods when they cannot be tested in isolation.
158		*
159	<	* <li> The documentation style for testcases is to provide as javadoc
159	>	* <li>The documentation style for testcases is to provide as javadoc
160		* a simple sentence or two describing the property that the testcase
161		* method purports to test. The javadocs do not say anything about how
162	<	* the property is tested. To find out, read the code.</li>
162	>	* the property is tested. To find out, read the code.
163		*
164	<	* <li> These tests are "conformance tests", and do not attempt to
164	>	* <li>These tests are "conformance tests", and do not attempt to
165		* test throughput, latency, scalability or other performance factors
166		* (see the separate "jtreg" tests for a set intended to check these
167		* for the most central aspects of functionality.) So, most tests use
168		* the smallest sensible numbers of threads, collection sizes, etc
169	<	* needed to check basic conformance.</li>
169	>	* needed to check basic conformance.
170		*
171		* <li>The test classes currently do not declare inclusion in
172		* any particular package to simplify things for people integrating
173	<	* them in TCK test suites.</li>
173	>	* them in TCK test suites.
174		*
175	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
176	<	* runs all JSR166 unit tests.</li>
175	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
176	>	* runs all JSR166 unit tests.
177		*
178		* </ul>
179		*/
#	Line 168 | Line 217 | public class JSR166TestCase extends Test
217		private static final int suiteRuns =
218		Integer.getInteger("jsr166.suiteRuns", 1);
219
220	+	/**
221	+	* Returns the value of the system property, or NaN if not defined.
222	+	*/
223	+	private static float systemPropertyValue(String name) {
224	+	String floatString = System.getProperty(name);
225	+	if (floatString == null)
226	+	return Float.NaN;
227	+	try {
228	+	return Float.parseFloat(floatString);
229	+	} catch (NumberFormatException ex) {
230	+	throw new IllegalArgumentException(
231	+	String.format("Bad float value in system property %s=%s",
232	+	name, floatString));
233	+	}
234	+	}
235	+
236	+	/**
237	+	* The scaling factor to apply to standard delays used in tests.
238	+	* May be initialized from any of:
239	+	* - the "jsr166.delay.factor" system property
240	+	* - the "test.timeout.factor" system property (as used by jtreg)
241	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
242	+	* - hard-coded fuzz factor when using a known slowpoke VM
243	+	*/
244	+	private static final float delayFactor = delayFactor();
245	+
246	+	private static float delayFactor() {
247	+	float x;
248	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
249	+	return x;
250	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
251	+	return x;
252	+	String prop = System.getProperty("java.vm.version");
253	+	if (prop != null && prop.matches(".*debug.*"))
254	+	return 4.0f; // How much slower is fastdebug than product?!
255	+	return 1.0f;
256	+	}
257	+
258		public JSR166TestCase() { super(); }
259		public JSR166TestCase(String name) { super(name); }
260
#	Line 183 | Line 270 | public class JSR166TestCase extends Test
270		return (regex == null) ? null : Pattern.compile(regex);
271		}
272
273	<	protected void runTest() throws Throwable {
273	>	// Instrumentation to debug very rare, but very annoying hung test runs.
274	>	static volatile TestCase currentTestCase;
275	>	// static volatile int currentRun = 0;
276	>	static {
277	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
278	>	// Avoid spurious reports with enormous runsPerTest.
279	>	// A single test case run should never take more than 1 second.
280	>	// But let's cap it at the high end too ...
281	>	final int timeoutMinutes =
282	>	Math.min(15, Math.max(runsPerTest / 60, 1));
283	>	for (TestCase lastTestCase = currentTestCase;;) {
284	>	try { MINUTES.sleep(timeoutMinutes); }
285	>	catch (InterruptedException unexpected) { break; }
286	>	if (lastTestCase == currentTestCase) {
287	>	System.err.printf(
288	>	"Looks like we're stuck running test: %s%n",
289	>	lastTestCase);
290	>	//                     System.err.printf(
291	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
292	>	//                         lastTestCase, currentRun, runsPerTest);
293	>	//                     System.err.println("availableProcessors=" +
294	>	//                         Runtime.getRuntime().availableProcessors());
295	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
296	>	dumpTestThreads();
297	>	// one stack dump is probably enough; more would be spam
298	>	break;
299	>	}
300	>	lastTestCase = currentTestCase;
301	>	}}};
302	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
303	>	thread.setDaemon(true);
304	>	thread.start();
305	>	}
306	>
307	>	//     public static String cpuModel() {
308	>	//         try {
309	>	//             java.util.regex.Matcher matcher
310	>	//               = Pattern.compile("model name\\s*: (.*)")
311	>	//                 .matcher(new String(
312	>	//                     java.nio.file.Files.readAllBytes(
313	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
314	>	//             matcher.find();
315	>	//             return matcher.group(1);
316	>	//         } catch (Exception ex) { return null; }
317	>	//     }
318	>
319	>	public void runBare() throws Throwable {
320	>	currentTestCase = this;
321		if (methodFilter == null
322	<	|| methodFilter.matcher(toString()).find()) {
323	<	for (int i = 0; i < runsPerTest; i++) {
324	<	if (profileTests)
325	<	runTestProfiled();
326	<	else
327	<	super.runTest();
328	<	}
322	>	|| methodFilter.matcher(toString()).find())
323	>	super.runBare();
324	>	}
325	>
326	>	protected void runTest() throws Throwable {
327	>	for (int i = 0; i < runsPerTest; i++) {
328	>	// currentRun = i;
329	>	if (profileTests)
330	>	runTestProfiled();
331	>	else
332	>	super.runTest();
333		}
334		}
335
336		protected void runTestProfiled() throws Throwable {
337	<	// Warmup run, notably to trigger all needed classloading.
338	<	super.runTest();
201	<	long t0 = System.nanoTime();
202	<	try {
337	>	for (int i = 0; i < 2; i++) {
338	>	long startTime = System.nanoTime();
339		super.runTest();
340	<	} finally {
341	<	long elapsedMillis = millisElapsedSince(t0);
342	<	if (elapsedMillis >= profileThreshold)
340	>	long elapsedMillis = millisElapsedSince(startTime);
341	>	if (elapsedMillis < profileThreshold)
342	>	break;
343	>	// Never report first run of any test; treat it as a
344	>	// warmup run, notably to trigger all needed classloading,
345	>	if (i > 0)
346		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
347		}
348		}
#	Line 215 | Line 354 | public class JSR166TestCase extends Test
354		main(suite(), args);
355		}
356
357	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
358	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
359	+	long runTime;
360	+	public void startTest(Test test) {}
361	+	protected void printHeader(long runTime) {
362	+	this.runTime = runTime; // defer printing for later
363	+	}
364	+	protected void printFooter(TestResult result) {
365	+	if (result.wasSuccessful()) {
366	+	getWriter().println("OK (" + result.runCount() + " tests)"
367	+	+ "  Time: " + elapsedTimeAsString(runTime));
368	+	} else {
369	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
370	+	super.printFooter(result);
371	+	}
372	+	}
373	+	}
374	+
375	+	/**
376	+	* Returns a TestRunner that doesn't bother with unnecessary
377	+	* fluff, like printing a "." for each test case.
378	+	*/
379	+	static junit.textui.TestRunner newPithyTestRunner() {
380	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
381	+	runner.setPrinter(new PithyResultPrinter(System.out));
382	+	return runner;
383	+	}
384	+
385		/**
386		* Runs all unit tests in the given test suite.
387		* Actual behavior influenced by jsr166.* system properties.
#	Line 226 | Line 393 | public class JSR166TestCase extends Test
393		System.setSecurityManager(new SecurityManager());
394		}
395		for (int i = 0; i < suiteRuns; i++) {
396	<	TestResult result = junit.textui.TestRunner.run(suite);
396	>	TestResult result = newPithyTestRunner().doRun(suite);
397		if (!result.wasSuccessful())
398		System.exit(1);
399		System.gc();
#	Line 281 | Line 448 | public class JSR166TestCase extends Test
448		public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
449		public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
450		public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
451	<	public static boolean atLeastJava9() { return JAVA_CLASS_VERSION >= 53.0; }
451	>	public static boolean atLeastJava9() {
452	>	return JAVA_CLASS_VERSION >= 53.0
453	>	// As of 2015-09, java9 still uses 52.0 class file version
454	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
455	>	}
456	>	public static boolean atLeastJava10() {
457	>	return JAVA_CLASS_VERSION >= 54.0
458	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
459	>	}
460
461		/**
462		* Collects all JSR166 unit tests as one suite.
#	Line 302 | Line 477 | public class JSR166TestCase extends Test
477		AbstractQueuedLongSynchronizerTest.suite(),
478		ArrayBlockingQueueTest.suite(),
479		ArrayDequeTest.suite(),
480	+	ArrayListTest.suite(),
481		AtomicBooleanTest.suite(),
482		AtomicIntegerArrayTest.suite(),
483		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 324 | Line 500 | public class JSR166TestCase extends Test
500		CopyOnWriteArrayListTest.suite(),
501		CopyOnWriteArraySetTest.suite(),
502		CountDownLatchTest.suite(),
503	+	CountedCompleterTest.suite(),
504		CyclicBarrierTest.suite(),
505		DelayQueueTest.suite(),
506		EntryTest.suite(),
#	Line 352 | Line 529 | public class JSR166TestCase extends Test
529		TreeMapTest.suite(),
530		TreeSetTest.suite(),
531		TreeSubMapTest.suite(),
532	<	TreeSubSetTest.suite());
532	>	TreeSubSetTest.suite(),
533	>	VectorTest.suite());
534
535		// Java8+ test classes
536		if (atLeastJava8()) {
537		String[] java8TestClassNames = {
538	+	"ArrayDeque8Test",
539		"Atomic8Test",
540		"CompletableFutureTest",
541		"ConcurrentHashMap8Test",
542	<	"CountedCompleterTest",
542	>	"CountedCompleter8Test",
543		"DoubleAccumulatorTest",
544		"DoubleAdderTest",
545		"ForkJoinPool8Test",
546		"ForkJoinTask8Test",
547	+	"LinkedBlockingDeque8Test",
548	+	"LinkedBlockingQueue8Test",
549		"LongAccumulatorTest",
550		"LongAdderTest",
551		"SplittableRandomTest",
552		"StampedLockTest",
553	+	"SubmissionPublisherTest",
554		"ThreadLocalRandom8Test",
555	+	"TimeUnit8Test",
556		};
557		addNamedTestClasses(suite, java8TestClassNames);
558		}
#	Line 377 | Line 560 | public class JSR166TestCase extends Test
560		// Java9+ test classes
561		if (atLeastJava9()) {
562		String[] java9TestClassNames = {
563	<	"ThreadPoolExecutor9Test",
563	>	"AtomicBoolean9Test",
564	>	"AtomicInteger9Test",
565	>	"AtomicIntegerArray9Test",
566	>	"AtomicLong9Test",
567	>	"AtomicLongArray9Test",
568	>	"AtomicReference9Test",
569	>	"AtomicReferenceArray9Test",
570	>	"ExecutorCompletionService9Test",
571	>	"ForkJoinPool9Test",
572		};
573		addNamedTestClasses(suite, java9TestClassNames);
574		}
#	Line 388 | Line 579 | public class JSR166TestCase extends Test
579		/** Returns list of junit-style test method names in given class. */
580		public static ArrayList<String> testMethodNames(Class<?> testClass) {
581		Method[] methods = testClass.getDeclaredMethods();
582	<	ArrayList<String> names = new ArrayList<String>(methods.length);
582	>	ArrayList<String> names = new ArrayList<>(methods.length);
583		for (Method method : methods) {
584		if (method.getName().startsWith("test")
585		&& Modifier.isPublic(method.getModifiers())
#	Line 444 | Line 635 | public class JSR166TestCase extends Test
635		} else {
636		return new TestSuite();
637		}
447	–
638		}
639
640		// Delays for timing-dependent tests, in milliseconds.
#	Line 454 | 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 the shortest timed delay. This could
671	<	* be reimplemented to use for example a Property.
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,
677	>	* or via jtreg's -timeoutFactor: flag.
678	>	* http://openjdk.java.net/jtreg/command-help.html
679		*/
680		protected long getShortDelay() {
681	<	return 50;
681	>	return (long) (50 * delayFactor);
682		}
683
684		/**
#	Line 472 | Line 691 | public class JSR166TestCase extends Test
691		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
692		}
693
694	+	private static final long TIMEOUT_DELAY_MS
695	+	= (long) (12.0 * Math.cbrt(delayFactor));
696	+
697		/**
698	<	* Returns a timeout in milliseconds to be used in tests that
699	<	* verify that operations block or time out.
698	>	* Returns a timeout in milliseconds to be used in tests that verify
699	>	* that operations block or time out.  We want this to be longer
700	>	* than the OS scheduling quantum, but not too long, so don't scale
701	>	* linearly with delayFactor; we use "crazy" cube root instead.
702		*/
703	<	long timeoutMillis() {
704	<	return SHORT_DELAY_MS / 4;
703	>	static long timeoutMillis() {
704	>	return TIMEOUT_DELAY_MS;
705		}
706
707		/**
708	<	* Returns a new Date instance representing a time delayMillis
709	<	* milliseconds in the future.
708	>	* Returns a new Date instance representing a time at least
709	>	* delayMillis milliseconds in the future.
710		*/
711		Date delayedDate(long delayMillis) {
712	<	return new Date(System.currentTimeMillis() + delayMillis);
712	>	// Add 1 because currentTimeMillis is known to round into the past.
713	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
714		}
715
716		/**
717		* The first exception encountered if any threadAssertXXX method fails.
718		*/
719		private final AtomicReference<Throwable> threadFailure
720	<	= new AtomicReference<Throwable>(null);
720	>	= new AtomicReference<>(null);
721
722		/**
723		* Records an exception so that it can be rethrown later in the test
#	Line 501 | Line 726 | public class JSR166TestCase extends Test
726		* the same test have no effect.
727		*/
728		public void threadRecordFailure(Throwable t) {
729	+	System.err.println(t);
730	+	dumpTestThreads();
731		threadFailure.compareAndSet(null, t);
732		}
733
#	Line 508 | Line 735 | public class JSR166TestCase extends Test
735		setDelays();
736		}
737
738	+	void tearDownFail(String format, Object... args) {
739	+	String msg = toString() + ": " + String.format(format, args);
740	+	System.err.println(msg);
741	+	dumpTestThreads();
742	+	throw new AssertionFailedError(msg);
743	+	}
744	+
745		/**
746		* Extra checks that get done for all test cases.
747		*
#	Line 535 | Line 769 | public class JSR166TestCase extends Test
769		}
770
771		if (Thread.interrupted())
772	<	throw new AssertionFailedError("interrupt status set in main thread");
772	>	tearDownFail("interrupt status set in main thread");
773
774		checkForkJoinPoolThreadLeaks();
775		}
776
777		/**
778	<	* Finds missing try { ... } finally { joinPool(e); }
778	>	* Finds missing PoolCleaners
779		*/
780		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
781	<	Thread[] survivors = new Thread[5];
781	>	Thread[] survivors = new Thread[7];
782		int count = Thread.enumerate(survivors);
783		for (int i = 0; i < count; i++) {
784		Thread thread = survivors[i];
#	Line 552 | Line 786 | public class JSR166TestCase extends Test
786		if (name.startsWith("ForkJoinPool-")) {
787		// give thread some time to terminate
788		thread.join(LONG_DELAY_MS);
789	<	if (!thread.isAlive()) continue;
790	<	throw new AssertionFailedError
791	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
558	<	toString(), name));
789	>	if (thread.isAlive())
790	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
791	>	thread);
792		}
793		}
794	+
795	+	if (!ForkJoinPool.commonPool()
796	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
797	+	tearDownFail("ForkJoin common pool thread stuck");
798		}
799
800		/**
#	Line 570 | Line 807 | public class JSR166TestCase extends Test
807		fail(reason);
808		} catch (AssertionFailedError t) {
809		threadRecordFailure(t);
810	<	fail(reason);
810	>	throw t;
811		}
812		}
813
#	Line 697 | Line 934 | public class JSR166TestCase extends Test
934		/**
935		* Delays, via Thread.sleep, for the given millisecond delay, but
936		* if the sleep is shorter than specified, may re-sleep or yield
937	<	* until time elapses.
937	>	* until time elapses.  Ensures that the given time, as measured
938	>	* by System.nanoTime(), has elapsed.
939		*/
940		static void delay(long millis) throws InterruptedException {
941	<	long startTime = System.nanoTime();
942	<	long ns = millis * 1000 * 1000;
943	<	for (;;) {
941	>	long nanos = millis * (1000 * 1000);
942	>	final long wakeupTime = System.nanoTime() + nanos;
943	>	do {
944		if (millis > 0L)
945		Thread.sleep(millis);
946		else // too short to sleep
947		Thread.yield();
948	<	long d = ns - (System.nanoTime() - startTime);
949	<	if (d > 0L)
950	<	millis = d / (1000 * 1000);
951	<	else
952	<	break;
948	>	nanos = wakeupTime - System.nanoTime();
949	>	millis = nanos / (1000 * 1000);
950	>	} while (nanos >= 0L);
951	>	}
952	>
953	>	/**
954	>	* Allows use of try-with-resources with per-test thread pools.
955	>	*/
956	>	class PoolCleaner implements AutoCloseable {
957	>	private final ExecutorService pool;
958	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
959	>	public void close() { joinPool(pool); }
960	>	}
961	>
962	>	/**
963	>	* An extension of PoolCleaner that has an action to release the pool.
964	>	*/
965	>	class PoolCleanerWithReleaser extends PoolCleaner {
966	>	private final Runnable releaser;
967	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
968	>	super(pool);
969	>	this.releaser = releaser;
970		}
971	+	public void close() {
972	+	try {
973	+	releaser.run();
974	+	} finally {
975	+	super.close();
976	+	}
977	+	}
978	+	}
979	+
980	+	PoolCleaner cleaner(ExecutorService pool) {
981	+	return new PoolCleaner(pool);
982	+	}
983	+
984	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
985	+	return new PoolCleanerWithReleaser(pool, releaser);
986	+	}
987	+
988	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
989	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
990	+	}
991	+
992	+	Runnable releaser(final CountDownLatch latch) {
993	+	return new Runnable() { public void run() {
994	+	do { latch.countDown(); }
995	+	while (latch.getCount() > 0);
996	+	}};
997	+	}
998	+
999	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1000	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1001	+	}
1002	+
1003	+	Runnable releaser(final AtomicBoolean flag) {
1004	+	return new Runnable() { public void run() { flag.set(true); }};
1005		}
1006
1007		/**
1008		* Waits out termination of a thread pool or fails doing so.
1009		*/
1010	<	void joinPool(ExecutorService exec) {
1010	>	void joinPool(ExecutorService pool) {
1011		try {
1012	<	exec.shutdown();
1013	<	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
1014	<	fail("ExecutorService " + exec +
1015	<	" did not terminate in a timely manner");
1012	>	pool.shutdown();
1013	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1014	>	try {
1015	>	threadFail("ExecutorService " + pool +
1016	>	" did not terminate in a timely manner");
1017	>	} finally {
1018	>	// last resort, for the benefit of subsequent tests
1019	>	pool.shutdownNow();
1020	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1021	>	}
1022	>	}
1023		} catch (SecurityException ok) {
1024		// Allowed in case test doesn't have privs
1025		} catch (InterruptedException fail) {
1026	<	fail("Unexpected InterruptedException");
1026	>	threadFail("Unexpected InterruptedException");
1027	>	}
1028	>	}
1029	>
1030	>	/**
1031	>	* Like Runnable, but with the freedom to throw anything.
1032	>	* junit folks had the same idea:
1033	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1034	>	*/
1035	>	interface Action { public void run() throws Throwable; }
1036	>
1037	>	/**
1038	>	* Runs all the given actions in parallel, failing if any fail.
1039	>	* Useful for running multiple variants of tests that are
1040	>	* necessarily individually slow because they must block.
1041	>	*/
1042	>	void testInParallel(Action ... actions) {
1043	>	ExecutorService pool = Executors.newCachedThreadPool();
1044	>	try (PoolCleaner cleaner = cleaner(pool)) {
1045	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1046	>	for (final Action action : actions)
1047	>	futures.add(pool.submit(new CheckedRunnable() {
1048	>	public void realRun() throws Throwable { action.run();}}));
1049	>	for (Future<?> future : futures)
1050	>	try {
1051	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1052	>	} catch (ExecutionException ex) {
1053	>	threadUnexpectedException(ex.getCause());
1054	>	} catch (Exception ex) {
1055	>	threadUnexpectedException(ex);
1056	>	}
1057		}
1058		}
1059
1060		/**
1061	<	* A debugging tool to print all stack traces, as jstack does.
1061	>	* A debugging tool to print stack traces of most threads, as jstack does.
1062	>	* Uninteresting threads are filtered out.
1063		*/
1064	<	static void printAllStackTraces() {
1065	<	for (ThreadInfo info :
1066	<	ManagementFactory.getThreadMXBean()
1067	<	.dumpAllThreads(true, true))
1064	>	static void dumpTestThreads() {
1065	>	SecurityManager sm = System.getSecurityManager();
1066	>	if (sm != null) {
1067	>	try {
1068	>	System.setSecurityManager(null);
1069	>	} catch (SecurityException giveUp) {
1070	>	return;
1071	>	}
1072	>	}
1073	>
1074	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1075	>	System.err.println("------ stacktrace dump start ------");
1076	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1077	>	final String name = info.getThreadName();
1078	>	String lockName;
1079	>	if ("Signal Dispatcher".equals(name))
1080	>	continue;
1081	>	if ("Reference Handler".equals(name)
1082	>	&& (lockName = info.getLockName()) != null
1083	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1084	>	continue;
1085	>	if ("Finalizer".equals(name)
1086	>	&& (lockName = info.getLockName()) != null
1087	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1088	>	continue;
1089	>	if ("checkForWedgedTest".equals(name))
1090	>	continue;
1091		System.err.print(info);
1092	+	}
1093	+	System.err.println("------ stacktrace dump end ------");
1094	+
1095	+	if (sm != null) System.setSecurityManager(sm);
1096	+	}
1097	+
1098	+	/**
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, 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) {
1107	+	fail("Unexpected InterruptedException");
1108	+	}
1109	+	Thread.State s = thread.getState();
1110	+	if (s == expected)
1111	+	return;
1112	+	else if (s == Thread.State.TERMINATED)
1113	+	fail("Unexpected thread termination");
1114	+	}
1115	+	fail("timed out waiting for thread to enter thread state " + expected);
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());
#	Line 751 | Line 1126 | public class JSR166TestCase extends Test
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 {
#	Line 758 | Line 1134 | public class JSR166TestCase extends Test
1134		delay(millis);
1135		assertTrue(thread.isAlive());
1136		} catch (InterruptedException fail) {
1137	<	fail("Unexpected InterruptedException");
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);
#	Line 772 | Line 1149 | public class JSR166TestCase extends Test
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 {
#	Line 780 | Line 1158 | public class JSR166TestCase extends Test
1158		for (Thread thread : threads)
1159		assertTrue(thread.isAlive());
1160		} catch (InterruptedException fail) {
1161	<	fail("Unexpected InterruptedException");
1161	>	threadFail("Unexpected InterruptedException");
1162		}
1163		}
1164
#	Line 822 | Line 1200 | public class JSR166TestCase extends Test
1200		}
1201
1202		/**
1203	+	* The maximum number of consecutive spurious wakeups we should
1204	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1205	+	*/
1206	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1207	+
1208	+	/**
1209		* The number of elements to place in collections, arrays, etc.
1210		*/
1211		public static final int SIZE = 20;
#	Line 925 | Line 1309 | public class JSR166TestCase extends Test
1309		}
1310		public void refresh() {}
1311		public String toString() {
1312	<	List<Permission> ps = new ArrayList<Permission>();
1312	>	List<Permission> ps = new ArrayList<>();
1313		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1314		ps.add(e.nextElement());
1315		return "AdjustablePolicy with permissions " + ps;
#	Line 955 | Line 1339 | public class JSR166TestCase extends Test
1339		* Sleeps until the given time has elapsed.
1340		* Throws AssertionFailedError if interrupted.
1341		*/
1342	<	void sleep(long millis) {
1342	>	static void sleep(long millis) {
1343		try {
1344		delay(millis);
1345		} catch (InterruptedException fail) {
#	Line 971 | Line 1355 | public class JSR166TestCase extends Test
1355		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1356		*/
1357		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1358	<	long startTime = System.nanoTime();
1358	>	long startTime = 0L;
1359		for (;;) {
1360		Thread.State s = thread.getState();
1361		if (s == Thread.State.BLOCKED ||
#	Line 980 | Line 1364 | public class JSR166TestCase extends Test
1364		return;
1365		else if (s == Thread.State.TERMINATED)
1366		fail("Unexpected thread termination");
1367	+	else if (startTime == 0L)
1368	+	startTime = System.nanoTime();
1369		else if (millisElapsedSince(startTime) > timeoutMillis) {
1370		threadAssertTrue(thread.isAlive());
1371	<	return;
1371	>	fail("timed out waiting for thread to enter wait state");
1372	>	}
1373	>	Thread.yield();
1374	>	}
1375	>	}
1376	>
1377	>	/**
1378	>	* Spin-waits up to the specified number of milliseconds for the given
1379	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1380	>	* and additionally satisfy the given condition.
1381	>	*/
1382	>	void waitForThreadToEnterWaitState(
1383	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1384	>	long startTime = 0L;
1385	>	for (;;) {
1386	>	Thread.State s = thread.getState();
1387	>	if (s == Thread.State.BLOCKED ||
1388	>	s == Thread.State.WAITING ||
1389	>	s == Thread.State.TIMED_WAITING) {
1390	>	try {
1391	>	if (waitingForGodot.call())
1392	>	return;
1393	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1394	>	}
1395	>	else if (s == Thread.State.TERMINATED)
1396	>	fail("Unexpected thread termination");
1397	>	else if (startTime == 0L)
1398	>	startTime = System.nanoTime();
1399	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1400	>	threadAssertTrue(thread.isAlive());
1401	>	fail("timed out waiting for thread to enter wait state");
1402		}
1403		Thread.yield();
1404		}
1405		}
1406
1407		/**
1408	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1409	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1408	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1409	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1410		*/
1411		void waitForThreadToEnterWaitState(Thread thread) {
1412		waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1413		}
1414
1415		/**
1416	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1417	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1418	+	* and additionally satisfy the given condition.
1419	+	*/
1420	+	void waitForThreadToEnterWaitState(
1421	+	Thread thread, Callable<Boolean> waitingForGodot) {
1422	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1423	+	}
1424	+
1425	+	/**
1426		* Returns the number of milliseconds since time given by
1427		* startNanoTime, which must have been previously returned from a
1428		* call to {@link System#nanoTime()}.
#	Line 1058 | Line 1484 | public class JSR166TestCase extends Test
1484		} finally {
1485		if (t.getState() != Thread.State.TERMINATED) {
1486		t.interrupt();
1487	<	fail("Test timed out");
1487	>	threadFail("timed out waiting for thread to terminate");
1488		}
1489		}
1490		}
#	Line 1183 | Line 1609 | public class JSR166TestCase extends Test
1609		public static final String TEST_STRING = "a test string";
1610
1611		public static class StringTask implements Callable<String> {
1612	<	public String call() { return TEST_STRING; }
1612	>	final String value;
1613	>	public StringTask() { this(TEST_STRING); }
1614	>	public StringTask(String value) { this.value = value; }
1615	>	public String call() { return value; }
1616		}
1617
1618		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1196 | Line 1625 | public class JSR166TestCase extends Test
1625		}};
1626		}
1627
1628	<	public Runnable awaiter(final CountDownLatch latch) {
1628	>	public Runnable countDowner(final CountDownLatch latch) {
1629		return new CheckedRunnable() {
1630		public void realRun() throws InterruptedException {
1631	<	await(latch);
1631	>	latch.countDown();
1632		}};
1633		}
1634
1635	<	public void await(CountDownLatch latch) {
1635	>	class LatchAwaiter extends CheckedRunnable {
1636	>	static final int NEW = 0;
1637	>	static final int RUNNING = 1;
1638	>	static final int DONE = 2;
1639	>	final CountDownLatch latch;
1640	>	int state = NEW;
1641	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1642	>	public void realRun() throws InterruptedException {
1643	>	state = 1;
1644	>	await(latch);
1645	>	state = 2;
1646	>	}
1647	>	}
1648	>
1649	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1650	>	return new LatchAwaiter(latch);
1651	>	}
1652	>
1653	>	public void await(CountDownLatch latch, long timeoutMillis) {
1654		try {
1655	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1655	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1656	>	fail("timed out waiting for CountDownLatch for "
1657	>	+ (timeoutMillis/1000) + " sec");
1658		} catch (Throwable fail) {
1659		threadUnexpectedException(fail);
1660		}
1661		}
1662
1663	+	public void await(CountDownLatch latch) {
1664	+	await(latch, LONG_DELAY_MS);
1665	+	}
1666	+
1667		public void await(Semaphore semaphore) {
1668		try {
1669	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1669	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1670	>	fail("timed out waiting for Semaphore for "
1671	>	+ (LONG_DELAY_MS/1000) + " sec");
1672	>	} catch (Throwable fail) {
1673	>	threadUnexpectedException(fail);
1674	>	}
1675	>	}
1676	>
1677	>	public void await(CyclicBarrier barrier) {
1678	>	try {
1679	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1680		} catch (Throwable fail) {
1681		threadUnexpectedException(fail);
1682		}
#	Line 1242 | Line 1705 | public class JSR166TestCase extends Test
1705		public String call() { throw new NullPointerException(); }
1706		}
1707
1245	–	public static class CallableOne implements Callable<Integer> {
1246	–	public Integer call() { return one; }
1247	–	}
1248	–
1249	–	public class ShortRunnable extends CheckedRunnable {
1250	–	protected void realRun() throws Throwable {
1251	–	delay(SHORT_DELAY_MS);
1252	–	}
1253	–	}
1254	–
1255	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1256	–	protected void realRun() throws InterruptedException {
1257	–	delay(SHORT_DELAY_MS);
1258	–	}
1259	–	}
1260	–
1261	–	public class SmallRunnable extends CheckedRunnable {
1262	–	protected void realRun() throws Throwable {
1263	–	delay(SMALL_DELAY_MS);
1264	–	}
1265	–	}
1266	–
1708		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1709		protected void realRun() {
1710		try {
#	Line 1272 | Line 1713 | public class JSR166TestCase extends Test
1713		}
1714		}
1715
1275	–	public class SmallCallable extends CheckedCallable {
1276	–	protected Object realCall() throws InterruptedException {
1277	–	delay(SMALL_DELAY_MS);
1278	–	return Boolean.TRUE;
1279	–	}
1280	–	}
1281	–
1282	–	public class MediumRunnable extends CheckedRunnable {
1283	–	protected void realRun() throws Throwable {
1284	–	delay(MEDIUM_DELAY_MS);
1285	–	}
1286	–	}
1287	–
1288	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1289	–	protected void realRun() throws InterruptedException {
1290	–	delay(MEDIUM_DELAY_MS);
1291	–	}
1292	–	}
1293	–
1716		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1717		return new CheckedRunnable() {
1718		protected void realRun() {
#	Line 1300 | Line 1722 | public class JSR166TestCase extends Test
1722		}};
1723		}
1724
1303	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1304	–	protected void realRun() {
1305	–	try {
1306	–	delay(MEDIUM_DELAY_MS);
1307	–	} catch (InterruptedException ok) {}
1308	–	}
1309	–	}
1310	–
1311	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1312	–	protected void realRun() {
1313	–	try {
1314	–	delay(LONG_DELAY_MS);
1315	–	} catch (InterruptedException ok) {}
1316	–	}
1317	–	}
1318	–
1725		/**
1726		* For use as ThreadFactory in constructors
1727		*/
#	Line 1329 | Line 1735 | public class JSR166TestCase extends Test
1735		boolean isDone();
1736		}
1737
1332	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1333	–	return new TrackedRunnable() {
1334	–	private volatile boolean done = false;
1335	–	public boolean isDone() { return done; }
1336	–	public void run() {
1337	–	try {
1338	–	delay(timeoutMillis);
1339	–	done = true;
1340	–	} catch (InterruptedException ok) {}
1341	–	}
1342	–	};
1343	–	}
1344	–
1345	–	public static class TrackedShortRunnable implements Runnable {
1346	–	public volatile boolean done = false;
1347	–	public void run() {
1348	–	try {
1349	–	delay(SHORT_DELAY_MS);
1350	–	done = true;
1351	–	} catch (InterruptedException ok) {}
1352	–	}
1353	–	}
1354	–
1355	–	public static class TrackedSmallRunnable implements Runnable {
1356	–	public volatile boolean done = false;
1357	–	public void run() {
1358	–	try {
1359	–	delay(SMALL_DELAY_MS);
1360	–	done = true;
1361	–	} catch (InterruptedException ok) {}
1362	–	}
1363	–	}
1364	–
1365	–	public static class TrackedMediumRunnable implements Runnable {
1366	–	public volatile boolean done = false;
1367	–	public void run() {
1368	–	try {
1369	–	delay(MEDIUM_DELAY_MS);
1370	–	done = true;
1371	–	} catch (InterruptedException ok) {}
1372	–	}
1373	–	}
1374	–
1375	–	public static class TrackedLongRunnable implements Runnable {
1376	–	public volatile boolean done = false;
1377	–	public void run() {
1378	–	try {
1379	–	delay(LONG_DELAY_MS);
1380	–	done = true;
1381	–	} catch (InterruptedException ok) {}
1382	–	}
1383	–	}
1384	–
1738		public static class TrackedNoOpRunnable implements Runnable {
1739		public volatile boolean done = false;
1740		public void run() {
#	Line 1389 | Line 1742 | public class JSR166TestCase extends Test
1742		}
1743		}
1744
1392	–	public static class TrackedCallable implements Callable {
1393	–	public volatile boolean done = false;
1394	–	public Object call() {
1395	–	try {
1396	–	delay(SMALL_DELAY_MS);
1397	–	done = true;
1398	–	} catch (InterruptedException ok) {}
1399	–	return Boolean.TRUE;
1400	–	}
1401	–	}
1402	–
1745		/**
1746		* Analog of CheckedRunnable for RecursiveAction
1747		*/
#	Line 1443 | Line 1785 | public class JSR166TestCase extends Test
1785		* A CyclicBarrier that uses timed await and fails with
1786		* AssertionFailedErrors instead of throwing checked exceptions.
1787		*/
1788	<	public class CheckedBarrier extends CyclicBarrier {
1788	>	public static class CheckedBarrier extends CyclicBarrier {
1789		public CheckedBarrier(int parties) { super(parties); }
1790
1791		public int await() {
#	Line 1466 | 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 1507 | Line 1849 | public class JSR166TestCase extends Test
1849		}
1850		}
1851
1852	+	void assertImmutable(final Object o) {
1853	+	if (o instanceof Collection) {
1854	+	assertThrows(
1855	+	UnsupportedOperationException.class,
1856	+	new Runnable() { public void run() {
1857	+	((Collection) o).add(null);}});
1858	+	}
1859	+	}
1860	+
1861		@SuppressWarnings("unchecked")
1862		<T> T serialClone(T o) {
1863		try {
1864		ObjectInputStream ois = new ObjectInputStream
1865		(new ByteArrayInputStream(serialBytes(o)));
1866		T clone = (T) ois.readObject();
1867	+	if (o == clone) assertImmutable(o);
1868		assertSame(o.getClass(), clone.getClass());
1869		return clone;
1870		} catch (Throwable fail) {
#	Line 1521 | Line 1873 | public class JSR166TestCase extends Test
1873		}
1874		}
1875
1876	+	/**
1877	+	* A version of serialClone that leaves error handling (for
1878	+	* e.g. NotSerializableException) up to the caller.
1879	+	*/
1880	+	@SuppressWarnings("unchecked")
1881	+	<T> T serialClonePossiblyFailing(T o)
1882	+	throws ReflectiveOperationException, java.io.IOException {
1883	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1884	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1885	+	oos.writeObject(o);
1886	+	oos.flush();
1887	+	oos.close();
1888	+	ObjectInputStream ois = new ObjectInputStream
1889	+	(new ByteArrayInputStream(bos.toByteArray()));
1890	+	T clone = (T) ois.readObject();
1891	+	if (o == clone) assertImmutable(o);
1892	+	assertSame(o.getClass(), clone.getClass());
1893	+	return clone;
1894	+	}
1895	+
1896	+	/**
1897	+	* If o implements Cloneable and has a public clone method,
1898	+	* returns a clone of o, else null.
1899	+	*/
1900	+	@SuppressWarnings("unchecked")
1901	+	<T> T cloneableClone(T o) {
1902	+	if (!(o instanceof Cloneable)) return null;
1903	+	final T clone;
1904	+	try {
1905	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1906	+	} catch (NoSuchMethodException ok) {
1907	+	return null;
1908	+	} catch (ReflectiveOperationException unexpected) {
1909	+	throw new Error(unexpected);
1910	+	}
1911	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1912	+	assertSame(o.getClass(), clone.getClass());
1913	+	return clone;
1914	+	}
1915	+
1916		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1917		Runnable... throwingActions) {
1918		for (Runnable throwingAction : throwingActions) {
#	Line 1549 | Line 1941 | public class JSR166TestCase extends Test
1941		} catch (NoSuchElementException success) {}
1942		assertFalse(it.hasNext());
1943		}
1944	+
1945	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1946	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1947	+	}
1948	+
1949	+	public Runnable runnableThrowing(final RuntimeException ex) {
1950	+	return new Runnable() { public void run() { throw ex; }};
1951	+	}
1952	+
1953	+	/** A reusable thread pool to be shared by tests. */
1954	+	static final ExecutorService cachedThreadPool =
1955	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1956	+	1000L, MILLISECONDS,
1957	+	new SynchronousQueue<Runnable>());
1958	+
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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