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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.137 by jsr166, Fri Sep 4 18:27:33 2015 UTC vs.
Revision 1.239 by jsr166, Tue Jan 23 20:44:11 2018 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
52	–	import junit.framework.AssertionFailedError;
102		import junit.framework.Test;
103		import junit.framework.TestCase;
104		import junit.framework.TestResult;
#	Line 65 | Line 114 | import junit.framework.TestSuite;
114		*
115		* <ol>
116		*
117	<	* <li> All assertions in code running in generated threads must use
117	>	* <li>All assertions in code running in generated threads must use
118		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
119		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
120		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
121		* particularly recommended) for other code to use these forms too.
122		* Only the most typically used JUnit assertion methods are defined
123	<	* this way, but enough to live with.</li>
123	>	* this way, but enough to live with.
124		*
125	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
125	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
126		* to invoke {@code super.setUp} and {@code super.tearDown} within
127		* them. These methods are used to clear and check for thread
128	<	* assertion failures.</li>
128	>	* assertion failures.
129		*
130		* <li>All delays and timeouts must use one of the constants {@code
131		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 87 | Line 136 | import junit.framework.TestSuite;
136		* is always discriminable as larger than SHORT and smaller than
137		* MEDIUM.  And so on. These constants are set to conservative values,
138		* but even so, if there is ever any doubt, they can all be increased
139	<	* in one spot to rerun tests on slower platforms.</li>
139	>	* in one spot to rerun tests on slower platforms.
140		*
141	<	* <li> All threads generated must be joined inside each test case
141	>	* <li>All threads generated must be joined inside each test case
142		* method (or {@code fail} to do so) before returning from the
143		* method. The {@code joinPool} method can be used to do this when
144	<	* using Executors.</li>
144	>	* using Executors.
145		*
146		* </ol>
147		*
148		* <p><b>Other notes</b>
149		* <ul>
150		*
151	<	* <li> Usually, there is one testcase method per JSR166 method
151	>	* <li>Usually, there is one testcase method per JSR166 method
152		* covering "normal" operation, and then as many exception-testing
153		* methods as there are exceptions the method can throw. Sometimes
154		* there are multiple tests per JSR166 method when the different
155		* "normal" behaviors differ significantly. And sometimes testcases
156	<	* cover multiple methods when they cannot be tested in
108	<	* isolation.</li>
156	>	* cover multiple methods when they cannot be tested in isolation.
157		*
158	<	* <li> The documentation style for testcases is to provide as javadoc
158	>	* <li>The documentation style for testcases is to provide as javadoc
159		* a simple sentence or two describing the property that the testcase
160		* method purports to test. The javadocs do not say anything about how
161	<	* the property is tested. To find out, read the code.</li>
161	>	* the property is tested. To find out, read the code.
162		*
163	<	* <li> These tests are "conformance tests", and do not attempt to
163	>	* <li>These tests are "conformance tests", and do not attempt to
164		* test throughput, latency, scalability or other performance factors
165		* (see the separate "jtreg" tests for a set intended to check these
166		* for the most central aspects of functionality.) So, most tests use
167		* the smallest sensible numbers of threads, collection sizes, etc
168	<	* needed to check basic conformance.</li>
168	>	* needed to check basic conformance.
169		*
170		* <li>The test classes currently do not declare inclusion in
171		* any particular package to simplify things for people integrating
172	<	* them in TCK test suites.</li>
172	>	* them in TCK test suites.
173		*
174	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
175	<	* runs all JSR166 unit tests.</li>
174	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
175	>	* runs all JSR166 unit tests.
176		*
177		* </ul>
178		*/
#	Line 168 | Line 216 | public class JSR166TestCase extends Test
216		private static final int suiteRuns =
217		Integer.getInteger("jsr166.suiteRuns", 1);
218
219	+	/**
220	+	* Returns the value of the system property, or NaN if not defined.
221	+	*/
222	+	private static float systemPropertyValue(String name) {
223	+	String floatString = System.getProperty(name);
224	+	if (floatString == null)
225	+	return Float.NaN;
226	+	try {
227	+	return Float.parseFloat(floatString);
228	+	} catch (NumberFormatException ex) {
229	+	throw new IllegalArgumentException(
230	+	String.format("Bad float value in system property %s=%s",
231	+	name, floatString));
232	+	}
233	+	}
234	+
235	+	/**
236	+	* The scaling factor to apply to standard delays used in tests.
237	+	* May be initialized from any of:
238	+	* - the "jsr166.delay.factor" system property
239	+	* - the "test.timeout.factor" system property (as used by jtreg)
240	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
241	+	* - hard-coded fuzz factor when using a known slowpoke VM
242	+	*/
243	+	private static final float delayFactor = delayFactor();
244	+
245	+	private static float delayFactor() {
246	+	float x;
247	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
248	+	return x;
249	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
250	+	return x;
251	+	String prop = System.getProperty("java.vm.version");
252	+	if (prop != null && prop.matches(".*debug.*"))
253	+	return 4.0f; // How much slower is fastdebug than product?!
254	+	return 1.0f;
255	+	}
256	+
257		public JSR166TestCase() { super(); }
258		public JSR166TestCase(String name) { super(name); }
259
#	Line 183 | Line 269 | public class JSR166TestCase extends Test
269		return (regex == null) ? null : Pattern.compile(regex);
270		}
271
272	<	protected void runTest() throws Throwable {
272	>	// Instrumentation to debug very rare, but very annoying hung test runs.
273	>	static volatile TestCase currentTestCase;
274	>	// static volatile int currentRun = 0;
275	>	static {
276	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
277	>	// Avoid spurious reports with enormous runsPerTest.
278	>	// A single test case run should never take more than 1 second.
279	>	// But let's cap it at the high end too ...
280	>	final int timeoutMinutes =
281	>	Math.min(15, Math.max(runsPerTest / 60, 1));
282	>	for (TestCase lastTestCase = currentTestCase;;) {
283	>	try { MINUTES.sleep(timeoutMinutes); }
284	>	catch (InterruptedException unexpected) { break; }
285	>	if (lastTestCase == currentTestCase) {
286	>	System.err.printf(
287	>	"Looks like we're stuck running test: %s%n",
288	>	lastTestCase);
289	>	//                     System.err.printf(
290	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
291	>	//                         lastTestCase, currentRun, runsPerTest);
292	>	//                     System.err.println("availableProcessors=" +
293	>	//                         Runtime.getRuntime().availableProcessors());
294	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
295	>	dumpTestThreads();
296	>	// one stack dump is probably enough; more would be spam
297	>	break;
298	>	}
299	>	lastTestCase = currentTestCase;
300	>	}}};
301	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
302	>	thread.setDaemon(true);
303	>	thread.start();
304	>	}
305	>
306	>	//     public static String cpuModel() {
307	>	//         try {
308	>	//             java.util.regex.Matcher matcher
309	>	//               = Pattern.compile("model name\\s*: (.*)")
310	>	//                 .matcher(new String(
311	>	//                     java.nio.file.Files.readAllBytes(
312	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
313	>	//             matcher.find();
314	>	//             return matcher.group(1);
315	>	//         } catch (Exception ex) { return null; }
316	>	//     }
317	>
318	>	public void runBare() throws Throwable {
319	>	currentTestCase = this;
320		if (methodFilter == null
321	<	|| methodFilter.matcher(toString()).find()) {
322	<	for (int i = 0; i < runsPerTest; i++) {
323	<	if (profileTests)
324	<	runTestProfiled();
325	<	else
326	<	super.runTest();
327	<	}
321	>	|| methodFilter.matcher(toString()).find())
322	>	super.runBare();
323	>	}
324	>
325	>	protected void runTest() throws Throwable {
326	>	for (int i = 0; i < runsPerTest; i++) {
327	>	// currentRun = i;
328	>	if (profileTests)
329	>	runTestProfiled();
330	>	else
331	>	super.runTest();
332		}
333		}
334
335		protected void runTestProfiled() throws Throwable {
336	<	// Warmup run, notably to trigger all needed classloading.
337	<	super.runTest();
201	<	long t0 = System.nanoTime();
202	<	try {
336	>	for (int i = 0; i < 2; i++) {
337	>	long startTime = System.nanoTime();
338		super.runTest();
339	<	} finally {
340	<	long elapsedMillis = millisElapsedSince(t0);
341	<	if (elapsedMillis >= profileThreshold)
339	>	long elapsedMillis = millisElapsedSince(startTime);
340	>	if (elapsedMillis < profileThreshold)
341	>	break;
342	>	// Never report first run of any test; treat it as a
343	>	// warmup run, notably to trigger all needed classloading,
344	>	if (i > 0)
345		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
346		}
347		}
#	Line 215 | Line 353 | public class JSR166TestCase extends Test
353		main(suite(), args);
354		}
355
356	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
357	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
358	+	long runTime;
359	+	public void startTest(Test test) {}
360	+	protected void printHeader(long runTime) {
361	+	this.runTime = runTime; // defer printing for later
362	+	}
363	+	protected void printFooter(TestResult result) {
364	+	if (result.wasSuccessful()) {
365	+	getWriter().println("OK (" + result.runCount() + " tests)"
366	+	+ "  Time: " + elapsedTimeAsString(runTime));
367	+	} else {
368	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
369	+	super.printFooter(result);
370	+	}
371	+	}
372	+	}
373	+
374	+	/**
375	+	* Returns a TestRunner that doesn't bother with unnecessary
376	+	* fluff, like printing a "." for each test case.
377	+	*/
378	+	static junit.textui.TestRunner newPithyTestRunner() {
379	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
380	+	runner.setPrinter(new PithyResultPrinter(System.out));
381	+	return runner;
382	+	}
383	+
384		/**
385		* Runs all unit tests in the given test suite.
386		* Actual behavior influenced by jsr166.* system properties.
#	Line 226 | Line 392 | public class JSR166TestCase extends Test
392		System.setSecurityManager(new SecurityManager());
393		}
394		for (int i = 0; i < suiteRuns; i++) {
395	<	TestResult result = junit.textui.TestRunner.run(suite);
395	>	TestResult result = newPithyTestRunner().doRun(suite);
396		if (!result.wasSuccessful())
397		System.exit(1);
398		System.gc();
#	Line 278 | Line 444 | public class JSR166TestCase extends Test
444		}
445		}
446
447	<	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
448	<	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
449	<	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
450	<	public static boolean atLeastJava9() {
451	<	return JAVA_CLASS_VERSION >= 53.0
286	<	// As of 2015-09, java9 still uses 52.0 class file version
287	<	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
288	<	}
289	<	public static boolean atLeastJava10() {
290	<	return JAVA_CLASS_VERSION >= 54.0
291	<	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
292	<	}
447	>	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
448	>	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
449	>	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
450	>	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
451	>	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
452
453		/**
454		* Collects all JSR166 unit tests as one suite.
#	Line 310 | Line 469 | public class JSR166TestCase extends Test
469		AbstractQueuedLongSynchronizerTest.suite(),
470		ArrayBlockingQueueTest.suite(),
471		ArrayDequeTest.suite(),
472	+	ArrayListTest.suite(),
473		AtomicBooleanTest.suite(),
474		AtomicIntegerArrayTest.suite(),
475		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 332 | Line 492 | public class JSR166TestCase extends Test
492		CopyOnWriteArrayListTest.suite(),
493		CopyOnWriteArraySetTest.suite(),
494		CountDownLatchTest.suite(),
495	+	CountedCompleterTest.suite(),
496		CyclicBarrierTest.suite(),
497		DelayQueueTest.suite(),
498		EntryTest.suite(),
#	Line 360 | Line 521 | public class JSR166TestCase extends Test
521		TreeMapTest.suite(),
522		TreeSetTest.suite(),
523		TreeSubMapTest.suite(),
524	<	TreeSubSetTest.suite());
524	>	TreeSubSetTest.suite(),
525	>	VectorTest.suite());
526
527		// Java8+ test classes
528		if (atLeastJava8()) {
529		String[] java8TestClassNames = {
530	+	"ArrayDeque8Test",
531		"Atomic8Test",
532		"CompletableFutureTest",
533		"ConcurrentHashMap8Test",
534	<	"CountedCompleterTest",
534	>	"CountedCompleter8Test",
535		"DoubleAccumulatorTest",
536		"DoubleAdderTest",
537		"ForkJoinPool8Test",
538		"ForkJoinTask8Test",
539	+	"HashMapTest",
540	+	"LinkedBlockingDeque8Test",
541	+	"LinkedBlockingQueue8Test",
542		"LongAccumulatorTest",
543		"LongAdderTest",
544		"SplittableRandomTest",
545		"StampedLockTest",
546	+	"SubmissionPublisherTest",
547		"ThreadLocalRandom8Test",
548	+	"TimeUnit8Test",
549		};
550		addNamedTestClasses(suite, java8TestClassNames);
551		}
#	Line 385 | Line 553 | public class JSR166TestCase extends Test
553		// Java9+ test classes
554		if (atLeastJava9()) {
555		String[] java9TestClassNames = {
556	<	"ThreadPoolExecutor9Test",
556	>	"AtomicBoolean9Test",
557	>	"AtomicInteger9Test",
558	>	"AtomicIntegerArray9Test",
559	>	"AtomicLong9Test",
560	>	"AtomicLongArray9Test",
561	>	"AtomicReference9Test",
562	>	"AtomicReferenceArray9Test",
563	>	"ExecutorCompletionService9Test",
564	>	"ForkJoinPool9Test",
565		};
566		addNamedTestClasses(suite, java9TestClassNames);
567		}
#	Line 396 | Line 572 | public class JSR166TestCase extends Test
572		/** Returns list of junit-style test method names in given class. */
573		public static ArrayList<String> testMethodNames(Class<?> testClass) {
574		Method[] methods = testClass.getDeclaredMethods();
575	<	ArrayList<String> names = new ArrayList<String>(methods.length);
575	>	ArrayList<String> names = new ArrayList<>(methods.length);
576		for (Method method : methods) {
577		if (method.getName().startsWith("test")
578		&& Modifier.isPublic(method.getModifiers())
#	Line 452 | Line 628 | public class JSR166TestCase extends Test
628		} else {
629		return new TestSuite();
630		}
455	–
631		}
632
633		// Delays for timing-dependent tests, in milliseconds.
#	Line 462 | Line 637 | public class JSR166TestCase extends Test
637		public static long MEDIUM_DELAY_MS;
638		public static long LONG_DELAY_MS;
639
640	+	private static final long RANDOM_TIMEOUT;
641	+	private static final long RANDOM_EXPIRED_TIMEOUT;
642	+	private static final TimeUnit RANDOM_TIMEUNIT;
643	+	static {
644	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
645	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
646	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
647	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
648	+	TimeUnit[] timeUnits = TimeUnit.values();
649	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
650	+	}
651	+
652	+	/**
653	+	* Returns a timeout for use when any value at all will do.
654	+	*/
655	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
656	+
657		/**
658	<	* Returns the shortest timed delay. This could
659	<	* be reimplemented to use for example a Property.
658	>	* Returns a timeout that means "no waiting", i.e. not positive.
659	>	*/
660	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
661	>
662	>	/**
663	>	* Returns a random non-null TimeUnit.
664	>	*/
665	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
666	>
667	>	/**
668	>	* Returns the shortest timed delay. This can be scaled up for
669	>	* slow machines using the jsr166.delay.factor system property,
670	>	* or via jtreg's -timeoutFactor: flag.
671	>	* http://openjdk.java.net/jtreg/command-help.html
672		*/
673		protected long getShortDelay() {
674	<	return 50;
674	>	return (long) (50 * delayFactor);
675		}
676
677		/**
#	Line 480 | Line 684 | public class JSR166TestCase extends Test
684		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
685		}
686
687	+	private static final long TIMEOUT_DELAY_MS
688	+	= (long) (12.0 * Math.cbrt(delayFactor));
689	+
690		/**
691	<	* Returns a timeout in milliseconds to be used in tests that
692	<	* verify that operations block or time out.
691	>	* Returns a timeout in milliseconds to be used in tests that verify
692	>	* that operations block or time out.  We want this to be longer
693	>	* than the OS scheduling quantum, but not too long, so don't scale
694	>	* linearly with delayFactor; we use "crazy" cube root instead.
695		*/
696	<	long timeoutMillis() {
697	<	return SHORT_DELAY_MS / 4;
696	>	static long timeoutMillis() {
697	>	return TIMEOUT_DELAY_MS;
698		}
699
700		/**
#	Line 501 | Line 710 | public class JSR166TestCase extends Test
710		* The first exception encountered if any threadAssertXXX method fails.
711		*/
712		private final AtomicReference<Throwable> threadFailure
713	<	= new AtomicReference<Throwable>(null);
713	>	= new AtomicReference<>(null);
714
715		/**
716		* Records an exception so that it can be rethrown later in the test
#	Line 510 | Line 719 | public class JSR166TestCase extends Test
719		* the same test have no effect.
720		*/
721		public void threadRecordFailure(Throwable t) {
722	+	System.err.println(t);
723	+	dumpTestThreads();
724		threadFailure.compareAndSet(null, t);
725		}
726
#	Line 517 | Line 728 | public class JSR166TestCase extends Test
728		setDelays();
729		}
730
731	+	void tearDownFail(String format, Object... args) {
732	+	String msg = toString() + ": " + String.format(format, args);
733	+	System.err.println(msg);
734	+	dumpTestThreads();
735	+	throw new AssertionError(msg);
736	+	}
737	+
738		/**
739		* Extra checks that get done for all test cases.
740		*
#	Line 535 | Line 753 | public class JSR166TestCase extends Test
753		throw (RuntimeException) t;
754		else if (t instanceof Exception)
755		throw (Exception) t;
756	<	else {
757	<	AssertionFailedError afe =
540	<	new AssertionFailedError(t.toString());
541	<	afe.initCause(t);
542	<	throw afe;
543	<	}
756	>	else
757	>	throw new AssertionError(t.toString(), t);
758		}
759
760		if (Thread.interrupted())
761	<	throw new AssertionFailedError("interrupt status set in main thread");
761	>	tearDownFail("interrupt status set in main thread");
762
763		checkForkJoinPoolThreadLeaks();
764		}
765
766		/**
767	<	* Finds missing try { ... } finally { joinPool(e); }
767	>	* Finds missing PoolCleaners
768		*/
769		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
770	<	Thread[] survivors = new Thread[5];
770	>	Thread[] survivors = new Thread[7];
771		int count = Thread.enumerate(survivors);
772		for (int i = 0; i < count; i++) {
773		Thread thread = survivors[i];
#	Line 561 | Line 775 | public class JSR166TestCase extends Test
775		if (name.startsWith("ForkJoinPool-")) {
776		// give thread some time to terminate
777		thread.join(LONG_DELAY_MS);
778	<	if (!thread.isAlive()) continue;
779	<	throw new AssertionFailedError
780	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
567	<	toString(), name));
778	>	if (thread.isAlive())
779	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
780	>	thread);
781		}
782		}
783	+
784	+	if (!ForkJoinPool.commonPool()
785	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
786	+	tearDownFail("ForkJoin common pool thread stuck");
787		}
788
789		/**
790		* Just like fail(reason), but additionally recording (using
791	<	* threadRecordFailure) any AssertionFailedError thrown, so that
792	<	* the current testcase will fail.
791	>	* threadRecordFailure) any AssertionError thrown, so that the
792	>	* current testcase will fail.
793		*/
794		public void threadFail(String reason) {
795		try {
796		fail(reason);
797	<	} catch (AssertionFailedError t) {
798	<	threadRecordFailure(t);
799	<	fail(reason);
797	>	} catch (AssertionError fail) {
798	>	threadRecordFailure(fail);
799	>	throw fail;
800		}
801		}
802
803		/**
804		* Just like assertTrue(b), but additionally recording (using
805	<	* threadRecordFailure) any AssertionFailedError thrown, so that
806	<	* the current testcase will fail.
805	>	* threadRecordFailure) any AssertionError thrown, so that the
806	>	* current testcase will fail.
807		*/
808		public void threadAssertTrue(boolean b) {
809		try {
810		assertTrue(b);
811	<	} catch (AssertionFailedError t) {
812	<	threadRecordFailure(t);
813	<	throw t;
811	>	} catch (AssertionError fail) {
812	>	threadRecordFailure(fail);
813	>	throw fail;
814		}
815		}
816
817		/**
818		* Just like assertFalse(b), but additionally recording (using
819	<	* threadRecordFailure) any AssertionFailedError thrown, so that
820	<	* the current testcase will fail.
819	>	* threadRecordFailure) any AssertionError thrown, so that the
820	>	* current testcase will fail.
821		*/
822		public void threadAssertFalse(boolean b) {
823		try {
824		assertFalse(b);
825	<	} catch (AssertionFailedError t) {
826	<	threadRecordFailure(t);
827	<	throw t;
825	>	} catch (AssertionError fail) {
826	>	threadRecordFailure(fail);
827	>	throw fail;
828		}
829		}
830
831		/**
832		* Just like assertNull(x), but additionally recording (using
833	<	* threadRecordFailure) any AssertionFailedError thrown, so that
834	<	* the current testcase will fail.
833	>	* threadRecordFailure) any AssertionError thrown, so that the
834	>	* current testcase will fail.
835		*/
836		public void threadAssertNull(Object x) {
837		try {
838		assertNull(x);
839	<	} catch (AssertionFailedError t) {
840	<	threadRecordFailure(t);
841	<	throw t;
839	>	} catch (AssertionError fail) {
840	>	threadRecordFailure(fail);
841	>	throw fail;
842		}
843		}
844
845		/**
846		* Just like assertEquals(x, y), but additionally recording (using
847	<	* threadRecordFailure) any AssertionFailedError thrown, so that
848	<	* the current testcase will fail.
847	>	* threadRecordFailure) any AssertionError thrown, so that the
848	>	* current testcase will fail.
849		*/
850		public void threadAssertEquals(long x, long y) {
851		try {
852		assertEquals(x, y);
853	<	} catch (AssertionFailedError t) {
854	<	threadRecordFailure(t);
855	<	throw t;
853	>	} catch (AssertionError fail) {
854	>	threadRecordFailure(fail);
855	>	throw fail;
856		}
857		}
858
859		/**
860		* Just like assertEquals(x, y), but additionally recording (using
861	<	* threadRecordFailure) any AssertionFailedError thrown, so that
862	<	* the current testcase will fail.
861	>	* threadRecordFailure) any AssertionError thrown, so that the
862	>	* current testcase will fail.
863		*/
864		public void threadAssertEquals(Object x, Object y) {
865		try {
866		assertEquals(x, y);
867	<	} catch (AssertionFailedError fail) {
867	>	} catch (AssertionError fail) {
868		threadRecordFailure(fail);
869		throw fail;
870		} catch (Throwable fail) {
#	Line 657 | Line 874 | public class JSR166TestCase extends Test
874
875		/**
876		* Just like assertSame(x, y), but additionally recording (using
877	<	* threadRecordFailure) any AssertionFailedError thrown, so that
878	<	* the current testcase will fail.
877	>	* threadRecordFailure) any AssertionError thrown, so that the
878	>	* current testcase will fail.
879		*/
880		public void threadAssertSame(Object x, Object y) {
881		try {
882		assertSame(x, y);
883	<	} catch (AssertionFailedError fail) {
883	>	} catch (AssertionError fail) {
884		threadRecordFailure(fail);
885		throw fail;
886		}
#	Line 685 | Line 902 | public class JSR166TestCase extends Test
902
903		/**
904		* Records the given exception using {@link #threadRecordFailure},
905	<	* then rethrows the exception, wrapping it in an
906	<	* AssertionFailedError if necessary.
905	>	* then rethrows the exception, wrapping it in an AssertionError
906	>	* if necessary.
907		*/
908		public void threadUnexpectedException(Throwable t) {
909		threadRecordFailure(t);
#	Line 695 | Line 912 | public class JSR166TestCase extends Test
912		throw (RuntimeException) t;
913		else if (t instanceof Error)
914		throw (Error) t;
915	<	else {
916	<	AssertionFailedError afe =
700	<	new AssertionFailedError("unexpected exception: " + t);
701	<	afe.initCause(t);
702	<	throw afe;
703	<	}
915	>	else
916	>	throw new AssertionError("unexpected exception: " + t, t);
917		}
918
919		/**
920		* Delays, via Thread.sleep, for the given millisecond delay, but
921		* if the sleep is shorter than specified, may re-sleep or yield
922	<	* until time elapses.
922	>	* until time elapses.  Ensures that the given time, as measured
923	>	* by System.nanoTime(), has elapsed.
924		*/
925		static void delay(long millis) throws InterruptedException {
926	<	long startTime = System.nanoTime();
927	<	long ns = millis * 1000 * 1000;
928	<	for (;;) {
926	>	long nanos = millis * (1000 * 1000);
927	>	final long wakeupTime = System.nanoTime() + nanos;
928	>	do {
929		if (millis > 0L)
930		Thread.sleep(millis);
931		else // too short to sleep
932		Thread.yield();
933	<	long d = ns - (System.nanoTime() - startTime);
934	<	if (d > 0L)
935	<	millis = d / (1000 * 1000);
936	<	else
937	<	break;
933	>	nanos = wakeupTime - System.nanoTime();
934	>	millis = nanos / (1000 * 1000);
935	>	} while (nanos >= 0L);
936	>	}
937	>
938	>	/**
939	>	* Allows use of try-with-resources with per-test thread pools.
940	>	*/
941	>	class PoolCleaner implements AutoCloseable {
942	>	private final ExecutorService pool;
943	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
944	>	public void close() { joinPool(pool); }
945	>	}
946	>
947	>	/**
948	>	* An extension of PoolCleaner that has an action to release the pool.
949	>	*/
950	>	class PoolCleanerWithReleaser extends PoolCleaner {
951	>	private final Runnable releaser;
952	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
953	>	super(pool);
954	>	this.releaser = releaser;
955	>	}
956	>	public void close() {
957	>	try {
958	>	releaser.run();
959	>	} finally {
960	>	super.close();
961	>	}
962		}
963		}
964
965	+	PoolCleaner cleaner(ExecutorService pool) {
966	+	return new PoolCleaner(pool);
967	+	}
968	+
969	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
970	+	return new PoolCleanerWithReleaser(pool, releaser);
971	+	}
972	+
973	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
974	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
975	+	}
976	+
977	+	Runnable releaser(final CountDownLatch latch) {
978	+	return new Runnable() { public void run() {
979	+	do { latch.countDown(); }
980	+	while (latch.getCount() > 0);
981	+	}};
982	+	}
983	+
984	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
985	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
986	+	}
987	+
988	+	Runnable releaser(final AtomicBoolean flag) {
989	+	return new Runnable() { public void run() { flag.set(true); }};
990	+	}
991	+
992		/**
993		* Waits out termination of a thread pool or fails doing so.
994		*/
995	<	void joinPool(ExecutorService exec) {
995	>	void joinPool(ExecutorService pool) {
996		try {
997	<	exec.shutdown();
998	<	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
999	<	fail("ExecutorService " + exec +
1000	<	" did not terminate in a timely manner");
997	>	pool.shutdown();
998	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
999	>	try {
1000	>	threadFail("ExecutorService " + pool +
1001	>	" did not terminate in a timely manner");
1002	>	} finally {
1003	>	// last resort, for the benefit of subsequent tests
1004	>	pool.shutdownNow();
1005	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1006	>	}
1007	>	}
1008		} catch (SecurityException ok) {
1009		// Allowed in case test doesn't have privs
1010		} catch (InterruptedException fail) {
1011	<	fail("Unexpected InterruptedException");
1011	>	threadFail("Unexpected InterruptedException");
1012		}
1013		}
1014
1015		/**
1016	<	* A debugging tool to print all stack traces, as jstack does.
1016	>	* Like Runnable, but with the freedom to throw anything.
1017	>	* junit folks had the same idea:
1018	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1019		*/
1020	<	static void printAllStackTraces() {
747	<	for (ThreadInfo info :
748	<	ManagementFactory.getThreadMXBean()
749	<	.dumpAllThreads(true, true))
750	<	System.err.print(info);
751	<	}
1020	>	interface Action { public void run() throws Throwable; }
1021
1022		/**
1023	<	* Checks that thread does not terminate within the default
1024	<	* millisecond delay of {@code timeoutMillis()}.
1023	>	* Runs all the given actions in parallel, failing if any fail.
1024	>	* Useful for running multiple variants of tests that are
1025	>	* necessarily individually slow because they must block.
1026		*/
1027	<	void assertThreadStaysAlive(Thread thread) {
1028	<	assertThreadStaysAlive(thread, timeoutMillis());
1027	>	void testInParallel(Action ... actions) {
1028	>	ExecutorService pool = Executors.newCachedThreadPool();
1029	>	try (PoolCleaner cleaner = cleaner(pool)) {
1030	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1031	>	for (final Action action : actions)
1032	>	futures.add(pool.submit(new CheckedRunnable() {
1033	>	public void realRun() throws Throwable { action.run();}}));
1034	>	for (Future<?> future : futures)
1035	>	try {
1036	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1037	>	} catch (ExecutionException ex) {
1038	>	threadUnexpectedException(ex.getCause());
1039	>	} catch (Exception ex) {
1040	>	threadUnexpectedException(ex);
1041	>	}
1042	>	}
1043		}
1044
1045		/**
1046	<	* Checks that thread does not terminate within the given millisecond delay.
1046	>	* A debugging tool to print stack traces of most threads, as jstack does.
1047	>	* Uninteresting threads are filtered out.
1048		*/
1049	<	void assertThreadStaysAlive(Thread thread, long millis) {
1050	<	try {
1051	<	// No need to optimize the failing case via Thread.join.
1052	<	delay(millis);
1053	<	assertTrue(thread.isAlive());
1054	<	} catch (InterruptedException fail) {
1055	<	fail("Unexpected InterruptedException");
1049	>	static void dumpTestThreads() {
1050	>	SecurityManager sm = System.getSecurityManager();
1051	>	if (sm != null) {
1052	>	try {
1053	>	System.setSecurityManager(null);
1054	>	} catch (SecurityException giveUp) {
1055	>	return;
1056	>	}
1057		}
772	–	}
1058
1059	<	/**
1060	<	* Checks that the threads do not terminate within the default
1061	<	* millisecond delay of {@code timeoutMillis()}.
1062	<	*/
1063	<	void assertThreadsStayAlive(Thread... threads) {
1064	<	assertThreadsStayAlive(timeoutMillis(), threads);
1059	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1060	>	System.err.println("------ stacktrace dump start ------");
1061	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1062	>	final String name = info.getThreadName();
1063	>	String lockName;
1064	>	if ("Signal Dispatcher".equals(name))
1065	>	continue;
1066	>	if ("Reference Handler".equals(name)
1067	>	&& (lockName = info.getLockName()) != null
1068	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1069	>	continue;
1070	>	if ("Finalizer".equals(name)
1071	>	&& (lockName = info.getLockName()) != null
1072	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1073	>	continue;
1074	>	if ("checkForWedgedTest".equals(name))
1075	>	continue;
1076	>	System.err.print(info);
1077	>	}
1078	>	System.err.println("------ stacktrace dump end ------");
1079	>
1080	>	if (sm != null) System.setSecurityManager(sm);
1081		}
1082
1083		/**
1084	<	* Checks that the threads do not terminate within the given millisecond delay.
1084	>	* Checks that thread eventually enters the expected blocked thread state.
1085		*/
1086	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1087	<	try {
1088	<	// No need to optimize the failing case via Thread.join.
1089	<	delay(millis);
1090	<	for (Thread thread : threads)
1091	<	assertTrue(thread.isAlive());
1092	<	} catch (InterruptedException fail) {
1093	<	fail("Unexpected InterruptedException");
1086	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1087	>	// always sleep at least 1 ms, with high probability avoiding
1088	>	// transitory states
1089	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1090	>	try { delay(1); }
1091	>	catch (InterruptedException fail) {
1092	>	fail("Unexpected InterruptedException");
1093	>	}
1094	>	Thread.State s = thread.getState();
1095	>	if (s == expected)
1096	>	return;
1097	>	else if (s == Thread.State.TERMINATED)
1098	>	fail("Unexpected thread termination");
1099		}
1100	+	fail("timed out waiting for thread to enter thread state " + expected);
1101		}
1102
1103		/**
#	Line 831 | Line 1138 | public class JSR166TestCase extends Test
1138		}
1139
1140		/**
1141	+	* The maximum number of consecutive spurious wakeups we should
1142	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1143	+	*/
1144	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1145	+
1146	+	/**
1147		* The number of elements to place in collections, arrays, etc.
1148		*/
1149		public static final int SIZE = 20;
#	Line 934 | Line 1247 | public class JSR166TestCase extends Test
1247		}
1248		public void refresh() {}
1249		public String toString() {
1250	<	List<Permission> ps = new ArrayList<Permission>();
1250	>	List<Permission> ps = new ArrayList<>();
1251		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1252		ps.add(e.nextElement());
1253		return "AdjustablePolicy with permissions " + ps;
#	Line 962 | Line 1275 | public class JSR166TestCase extends Test
1275
1276		/**
1277		* Sleeps until the given time has elapsed.
1278	<	* Throws AssertionFailedError if interrupted.
1278	>	* Throws AssertionError if interrupted.
1279		*/
1280	<	void sleep(long millis) {
1280	>	static void sleep(long millis) {
1281		try {
1282		delay(millis);
1283		} catch (InterruptedException fail) {
1284	<	AssertionFailedError afe =
972	<	new AssertionFailedError("Unexpected InterruptedException");
973	<	afe.initCause(fail);
974	<	throw afe;
1284	>	throw new AssertionError("Unexpected InterruptedException", fail);
1285		}
1286		}
1287
#	Line 980 | Line 1290 | public class JSR166TestCase extends Test
1290		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1291		*/
1292		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1293	<	long startTime = System.nanoTime();
1293	>	long startTime = 0L;
1294		for (;;) {
1295		Thread.State s = thread.getState();
1296		if (s == Thread.State.BLOCKED ||
#	Line 989 | Line 1299 | public class JSR166TestCase extends Test
1299		return;
1300		else if (s == Thread.State.TERMINATED)
1301		fail("Unexpected thread termination");
1302	+	else if (startTime == 0L)
1303	+	startTime = System.nanoTime();
1304		else if (millisElapsedSince(startTime) > timeoutMillis) {
1305		threadAssertTrue(thread.isAlive());
1306	<	return;
1306	>	fail("timed out waiting for thread to enter wait state");
1307	>	}
1308	>	Thread.yield();
1309	>	}
1310	>	}
1311	>
1312	>	/**
1313	>	* Spin-waits up to the specified number of milliseconds for the given
1314	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1315	>	* and additionally satisfy the given condition.
1316	>	*/
1317	>	void waitForThreadToEnterWaitState(
1318	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1319	>	long startTime = 0L;
1320	>	for (;;) {
1321	>	Thread.State s = thread.getState();
1322	>	if (s == Thread.State.BLOCKED ||
1323	>	s == Thread.State.WAITING ||
1324	>	s == Thread.State.TIMED_WAITING) {
1325	>	try {
1326	>	if (waitingForGodot.call())
1327	>	return;
1328	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1329	>	}
1330	>	else if (s == Thread.State.TERMINATED)
1331	>	fail("Unexpected thread termination");
1332	>	else if (startTime == 0L)
1333	>	startTime = System.nanoTime();
1334	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1335	>	threadAssertTrue(thread.isAlive());
1336	>	fail("timed out waiting for thread to enter wait state");
1337		}
1338		Thread.yield();
1339		}
1340		}
1341
1342		/**
1343	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1344	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1343	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1344	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1345		*/
1346		void waitForThreadToEnterWaitState(Thread thread) {
1347		waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1348		}
1349
1350		/**
1351	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1352	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1353	+	* and additionally satisfy the given condition.
1354	+	*/
1355	+	void waitForThreadToEnterWaitState(
1356	+	Thread thread, Callable<Boolean> waitingForGodot) {
1357	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1358	+	}
1359	+
1360	+	/**
1361		* Returns the number of milliseconds since time given by
1362		* startNanoTime, which must have been previously returned from a
1363		* call to {@link System#nanoTime()}.
#	Line 1020 | Line 1372 | public class JSR166TestCase extends Test
1372		//             r.run();
1373		//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1374		//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1375	<	//             throw new AssertionFailedError("did not return promptly");
1375	>	//             throw new AssertionError("did not return promptly");
1376		//     }
1377
1378		//     void assertTerminatesPromptly(Runnable r) {
#	Line 1037 | Line 1389 | public class JSR166TestCase extends Test
1389		assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1390		} catch (Throwable fail) { threadUnexpectedException(fail); }
1391		if (millisElapsedSince(startTime) > timeoutMillis/2)
1392	<	throw new AssertionFailedError("timed get did not return promptly");
1392	>	throw new AssertionError("timed get did not return promptly");
1393		}
1394
1395		<T> void checkTimedGet(Future<T> f, T expectedValue) {
#	Line 1067 | Line 1419 | public class JSR166TestCase extends Test
1419		} finally {
1420		if (t.getState() != Thread.State.TERMINATED) {
1421		t.interrupt();
1422	<	fail("Test timed out");
1422	>	threadFail("timed out waiting for thread to terminate");
1423		}
1424		}
1425		}
#	Line 1192 | Line 1544 | public class JSR166TestCase extends Test
1544		public static final String TEST_STRING = "a test string";
1545
1546		public static class StringTask implements Callable<String> {
1547	<	public String call() { return TEST_STRING; }
1547	>	final String value;
1548	>	public StringTask() { this(TEST_STRING); }
1549	>	public StringTask(String value) { this.value = value; }
1550	>	public String call() { return value; }
1551		}
1552
1553		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1205 | Line 1560 | public class JSR166TestCase extends Test
1560		}};
1561		}
1562
1563	<	public Runnable awaiter(final CountDownLatch latch) {
1563	>	public Runnable countDowner(final CountDownLatch latch) {
1564		return new CheckedRunnable() {
1565		public void realRun() throws InterruptedException {
1566	<	await(latch);
1566	>	latch.countDown();
1567		}};
1568		}
1569
1570	<	public void await(CountDownLatch latch) {
1570	>	class LatchAwaiter extends CheckedRunnable {
1571	>	static final int NEW = 0;
1572	>	static final int RUNNING = 1;
1573	>	static final int DONE = 2;
1574	>	final CountDownLatch latch;
1575	>	int state = NEW;
1576	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1577	>	public void realRun() throws InterruptedException {
1578	>	state = 1;
1579	>	await(latch);
1580	>	state = 2;
1581	>	}
1582	>	}
1583	>
1584	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1585	>	return new LatchAwaiter(latch);
1586	>	}
1587	>
1588	>	public void await(CountDownLatch latch, long timeoutMillis) {
1589		try {
1590	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1590	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1591	>	fail("timed out waiting for CountDownLatch for "
1592	>	+ (timeoutMillis/1000) + " sec");
1593		} catch (Throwable fail) {
1594		threadUnexpectedException(fail);
1595		}
1596		}
1597
1598	+	public void await(CountDownLatch latch) {
1599	+	await(latch, LONG_DELAY_MS);
1600	+	}
1601	+
1602		public void await(Semaphore semaphore) {
1603		try {
1604	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1604	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1605	>	fail("timed out waiting for Semaphore for "
1606	>	+ (LONG_DELAY_MS/1000) + " sec");
1607	>	} catch (Throwable fail) {
1608	>	threadUnexpectedException(fail);
1609	>	}
1610	>	}
1611	>
1612	>	public void await(CyclicBarrier barrier) {
1613	>	try {
1614	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1615		} catch (Throwable fail) {
1616		threadUnexpectedException(fail);
1617		}
#	Line 1242 | Line 1631 | public class JSR166TestCase extends Test
1631		//         long startTime = System.nanoTime();
1632		//         while (!flag.get()) {
1633		//             if (millisElapsedSince(startTime) > timeoutMillis)
1634	<	//                 throw new AssertionFailedError("timed out");
1634	>	//                 throw new AssertionError("timed out");
1635		//             Thread.yield();
1636		//         }
1637		//     }
#	Line 1251 | Line 1640 | public class JSR166TestCase extends Test
1640		public String call() { throw new NullPointerException(); }
1641		}
1642
1254	–	public static class CallableOne implements Callable<Integer> {
1255	–	public Integer call() { return one; }
1256	–	}
1257	–
1258	–	public class ShortRunnable extends CheckedRunnable {
1259	–	protected void realRun() throws Throwable {
1260	–	delay(SHORT_DELAY_MS);
1261	–	}
1262	–	}
1263	–
1264	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1265	–	protected void realRun() throws InterruptedException {
1266	–	delay(SHORT_DELAY_MS);
1267	–	}
1268	–	}
1269	–
1270	–	public class SmallRunnable extends CheckedRunnable {
1271	–	protected void realRun() throws Throwable {
1272	–	delay(SMALL_DELAY_MS);
1273	–	}
1274	–	}
1275	–
1643		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1644		protected void realRun() {
1645		try {
#	Line 1281 | Line 1648 | public class JSR166TestCase extends Test
1648		}
1649		}
1650
1284	–	public class SmallCallable extends CheckedCallable {
1285	–	protected Object realCall() throws InterruptedException {
1286	–	delay(SMALL_DELAY_MS);
1287	–	return Boolean.TRUE;
1288	–	}
1289	–	}
1290	–
1291	–	public class MediumRunnable extends CheckedRunnable {
1292	–	protected void realRun() throws Throwable {
1293	–	delay(MEDIUM_DELAY_MS);
1294	–	}
1295	–	}
1296	–
1297	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1298	–	protected void realRun() throws InterruptedException {
1299	–	delay(MEDIUM_DELAY_MS);
1300	–	}
1301	–	}
1302	–
1651		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1652		return new CheckedRunnable() {
1653		protected void realRun() {
#	Line 1309 | Line 1657 | public class JSR166TestCase extends Test
1657		}};
1658		}
1659
1312	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1313	–	protected void realRun() {
1314	–	try {
1315	–	delay(MEDIUM_DELAY_MS);
1316	–	} catch (InterruptedException ok) {}
1317	–	}
1318	–	}
1319	–
1320	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1321	–	protected void realRun() {
1322	–	try {
1323	–	delay(LONG_DELAY_MS);
1324	–	} catch (InterruptedException ok) {}
1325	–	}
1326	–	}
1327	–
1660		/**
1661		* For use as ThreadFactory in constructors
1662		*/
#	Line 1338 | Line 1670 | public class JSR166TestCase extends Test
1670		boolean isDone();
1671		}
1672
1341	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1342	–	return new TrackedRunnable() {
1343	–	private volatile boolean done = false;
1344	–	public boolean isDone() { return done; }
1345	–	public void run() {
1346	–	try {
1347	–	delay(timeoutMillis);
1348	–	done = true;
1349	–	} catch (InterruptedException ok) {}
1350	–	}
1351	–	};
1352	–	}
1353	–
1354	–	public static class TrackedShortRunnable implements Runnable {
1355	–	public volatile boolean done = false;
1356	–	public void run() {
1357	–	try {
1358	–	delay(SHORT_DELAY_MS);
1359	–	done = true;
1360	–	} catch (InterruptedException ok) {}
1361	–	}
1362	–	}
1363	–
1364	–	public static class TrackedSmallRunnable implements Runnable {
1365	–	public volatile boolean done = false;
1366	–	public void run() {
1367	–	try {
1368	–	delay(SMALL_DELAY_MS);
1369	–	done = true;
1370	–	} catch (InterruptedException ok) {}
1371	–	}
1372	–	}
1373	–
1374	–	public static class TrackedMediumRunnable implements Runnable {
1375	–	public volatile boolean done = false;
1376	–	public void run() {
1377	–	try {
1378	–	delay(MEDIUM_DELAY_MS);
1379	–	done = true;
1380	–	} catch (InterruptedException ok) {}
1381	–	}
1382	–	}
1383	–
1384	–	public static class TrackedLongRunnable implements Runnable {
1385	–	public volatile boolean done = false;
1386	–	public void run() {
1387	–	try {
1388	–	delay(LONG_DELAY_MS);
1389	–	done = true;
1390	–	} catch (InterruptedException ok) {}
1391	–	}
1392	–	}
1393	–
1673		public static class TrackedNoOpRunnable implements Runnable {
1674		public volatile boolean done = false;
1675		public void run() {
#	Line 1398 | Line 1677 | public class JSR166TestCase extends Test
1677		}
1678		}
1679
1401	–	public static class TrackedCallable implements Callable {
1402	–	public volatile boolean done = false;
1403	–	public Object call() {
1404	–	try {
1405	–	delay(SMALL_DELAY_MS);
1406	–	done = true;
1407	–	} catch (InterruptedException ok) {}
1408	–	return Boolean.TRUE;
1409	–	}
1410	–	}
1411	–
1680		/**
1681		* Analog of CheckedRunnable for RecursiveAction
1682		*/
#	Line 1450 | Line 1718 | public class JSR166TestCase extends Test
1718
1719		/**
1720		* A CyclicBarrier that uses timed await and fails with
1721	<	* AssertionFailedErrors instead of throwing checked exceptions.
1721	>	* AssertionErrors instead of throwing checked exceptions.
1722		*/
1723	<	public class CheckedBarrier extends CyclicBarrier {
1723	>	public static class CheckedBarrier extends CyclicBarrier {
1724		public CheckedBarrier(int parties) { super(parties); }
1725
1726		public int await() {
1727		try {
1728		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1729		} catch (TimeoutException timedOut) {
1730	<	throw new AssertionFailedError("timed out");
1730	>	throw new AssertionError("timed out");
1731		} catch (Exception fail) {
1732	<	AssertionFailedError afe =
1465	<	new AssertionFailedError("Unexpected exception: " + fail);
1466	<	afe.initCause(fail);
1467	<	throw afe;
1732	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1733		}
1734		}
1735		}
#	Line 1475 | Line 1740 | public class JSR166TestCase extends Test
1740		assertEquals(0, q.size());
1741		assertNull(q.peek());
1742		assertNull(q.poll());
1743	<	assertNull(q.poll(0, MILLISECONDS));
1743	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1744		assertEquals(q.toString(), "[]");
1745		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1746		assertFalse(q.iterator().hasNext());
#	Line 1516 | Line 1781 | public class JSR166TestCase extends Test
1781		}
1782		}
1783
1784	+	void assertImmutable(final Object o) {
1785	+	if (o instanceof Collection) {
1786	+	assertThrows(
1787	+	UnsupportedOperationException.class,
1788	+	new Runnable() { public void run() {
1789	+	((Collection) o).add(null);}});
1790	+	}
1791	+	}
1792	+
1793		@SuppressWarnings("unchecked")
1794		<T> T serialClone(T o) {
1795		try {
1796		ObjectInputStream ois = new ObjectInputStream
1797		(new ByteArrayInputStream(serialBytes(o)));
1798		T clone = (T) ois.readObject();
1799	+	if (o == clone) assertImmutable(o);
1800		assertSame(o.getClass(), clone.getClass());
1801		return clone;
1802		} catch (Throwable fail) {
#	Line 1530 | Line 1805 | public class JSR166TestCase extends Test
1805		}
1806		}
1807
1808	+	/**
1809	+	* A version of serialClone that leaves error handling (for
1810	+	* e.g. NotSerializableException) up to the caller.
1811	+	*/
1812	+	@SuppressWarnings("unchecked")
1813	+	<T> T serialClonePossiblyFailing(T o)
1814	+	throws ReflectiveOperationException, java.io.IOException {
1815	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1816	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1817	+	oos.writeObject(o);
1818	+	oos.flush();
1819	+	oos.close();
1820	+	ObjectInputStream ois = new ObjectInputStream
1821	+	(new ByteArrayInputStream(bos.toByteArray()));
1822	+	T clone = (T) ois.readObject();
1823	+	if (o == clone) assertImmutable(o);
1824	+	assertSame(o.getClass(), clone.getClass());
1825	+	return clone;
1826	+	}
1827	+
1828	+	/**
1829	+	* If o implements Cloneable and has a public clone method,
1830	+	* returns a clone of o, else null.
1831	+	*/
1832	+	@SuppressWarnings("unchecked")
1833	+	<T> T cloneableClone(T o) {
1834	+	if (!(o instanceof Cloneable)) return null;
1835	+	final T clone;
1836	+	try {
1837	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1838	+	} catch (NoSuchMethodException ok) {
1839	+	return null;
1840	+	} catch (ReflectiveOperationException unexpected) {
1841	+	throw new Error(unexpected);
1842	+	}
1843	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1844	+	assertSame(o.getClass(), clone.getClass());
1845	+	return clone;
1846	+	}
1847	+
1848		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1849		Runnable... throwingActions) {
1850		for (Runnable throwingAction : throwingActions) {
#	Line 1537 | Line 1852 | public class JSR166TestCase extends Test
1852		try { throwingAction.run(); }
1853		catch (Throwable t) {
1854		threw = true;
1855	<	if (!expectedExceptionClass.isInstance(t)) {
1856	<	AssertionFailedError afe =
1857	<	new AssertionFailedError
1858	<	("Expected " + expectedExceptionClass.getName() +
1859	<	", got " + t.getClass().getName());
1545	<	afe.initCause(t);
1546	<	threadUnexpectedException(afe);
1547	<	}
1855	>	if (!expectedExceptionClass.isInstance(t))
1856	>	throw new AssertionError(
1857	>	"Expected " + expectedExceptionClass.getName() +
1858	>	", got " + t.getClass().getName(),
1859	>	t);
1860		}
1861		if (!threw)
1862		shouldThrow(expectedExceptionClass.getName());
#	Line 1558 | Line 1870 | public class JSR166TestCase extends Test
1870		} catch (NoSuchElementException success) {}
1871		assertFalse(it.hasNext());
1872		}
1873	+
1874	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1875	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1876	+	}
1877	+
1878	+	public Runnable runnableThrowing(final RuntimeException ex) {
1879	+	return new Runnable() { public void run() { throw ex; }};
1880	+	}
1881	+
1882	+	/** A reusable thread pool to be shared by tests. */
1883	+	static final ExecutorService cachedThreadPool =
1884	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1885	+	1000L, MILLISECONDS,
1886	+	new SynchronousQueue<Runnable>());
1887	+
1888	+	static <T> void shuffle(T[] array) {
1889	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1890	+	}
1891	+
1892	+	/**
1893	+	* Returns the same String as would be returned by {@link
1894	+	* Object#toString}, whether or not the given object's class
1895	+	* overrides toString().
1896	+	*
1897	+	* @see System#identityHashCode
1898	+	*/
1899	+	static String identityString(Object x) {
1900	+	return x.getClass().getName()
1901	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1902	+	}
1903	+
1904	+	// --- Shared assertions for Executor tests ---
1905	+
1906	+	/**
1907	+	* Returns maximum number of tasks that can be submitted to given
1908	+	* pool (with bounded queue) before saturation (when submission
1909	+	* throws RejectedExecutionException).
1910	+	*/
1911	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1912	+	BlockingQueue<Runnable> q = pool.getQueue();
1913	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1914	+	}
1915	+
1916	+	@SuppressWarnings("FutureReturnValueIgnored")
1917	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1918	+	try {
1919	+	e.execute((Runnable) null);
1920	+	shouldThrow();
1921	+	} catch (NullPointerException success) {}
1922	+
1923	+	if (! (e instanceof ExecutorService)) return;
1924	+	ExecutorService es = (ExecutorService) e;
1925	+	try {
1926	+	es.submit((Runnable) null);
1927	+	shouldThrow();
1928	+	} catch (NullPointerException success) {}
1929	+	try {
1930	+	es.submit((Runnable) null, Boolean.TRUE);
1931	+	shouldThrow();
1932	+	} catch (NullPointerException success) {}
1933	+	try {
1934	+	es.submit((Callable) null);
1935	+	shouldThrow();
1936	+	} catch (NullPointerException success) {}
1937	+
1938	+	if (! (e instanceof ScheduledExecutorService)) return;
1939	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1940	+	try {
1941	+	ses.schedule((Runnable) null,
1942	+	randomTimeout(), randomTimeUnit());
1943	+	shouldThrow();
1944	+	} catch (NullPointerException success) {}
1945	+	try {
1946	+	ses.schedule((Callable) null,
1947	+	randomTimeout(), randomTimeUnit());
1948	+	shouldThrow();
1949	+	} catch (NullPointerException success) {}
1950	+	try {
1951	+	ses.scheduleAtFixedRate((Runnable) null,
1952	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1953	+	shouldThrow();
1954	+	} catch (NullPointerException success) {}
1955	+	try {
1956	+	ses.scheduleWithFixedDelay((Runnable) null,
1957	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1958	+	shouldThrow();
1959	+	} catch (NullPointerException success) {}
1960	+	}
1961	+
1962	+	void setRejectedExecutionHandler(
1963	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1964	+	p.setRejectedExecutionHandler(handler);
1965	+	assertSame(handler, p.getRejectedExecutionHandler());
1966	+	}
1967	+
1968	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1969	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1970	+	final long savedTaskCount = p.getTaskCount();
1971	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1972	+	final int savedQueueSize = p.getQueue().size();
1973	+	final boolean stock = (p.getClass().getClassLoader() == null);
1974	+
1975	+	Runnable r = () -> {};
1976	+	Callable<Boolean> c = () -> Boolean.TRUE;
1977	+
1978	+	class Recorder implements RejectedExecutionHandler {
1979	+	public volatile Runnable r = null;
1980	+	public volatile ThreadPoolExecutor p = null;
1981	+	public void reset() { r = null; p = null; }
1982	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1983	+	assertNull(this.r);
1984	+	assertNull(this.p);
1985	+	this.r = r;
1986	+	this.p = p;
1987	+	}
1988	+	}
1989	+
1990	+	// check custom handler is invoked exactly once per task
1991	+	Recorder recorder = new Recorder();
1992	+	setRejectedExecutionHandler(p, recorder);
1993	+	for (int i = 2; i--> 0; ) {
1994	+	recorder.reset();
1995	+	p.execute(r);
1996	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
1997	+	assertSame(r, recorder.r);
1998	+	assertSame(p, recorder.p);
1999	+
2000	+	recorder.reset();
2001	+	assertFalse(p.submit(r).isDone());
2002	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2003	+	assertSame(p, recorder.p);
2004	+
2005	+	recorder.reset();
2006	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2007	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2008	+	assertSame(p, recorder.p);
2009	+
2010	+	recorder.reset();
2011	+	assertFalse(p.submit(c).isDone());
2012	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2013	+	assertSame(p, recorder.p);
2014	+
2015	+	if (p instanceof ScheduledExecutorService) {
2016	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2017	+	ScheduledFuture<?> future;
2018	+
2019	+	recorder.reset();
2020	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2021	+	assertFalse(future.isDone());
2022	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2023	+	assertSame(p, recorder.p);
2024	+
2025	+	recorder.reset();
2026	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2027	+	assertFalse(future.isDone());
2028	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2029	+	assertSame(p, recorder.p);
2030	+
2031	+	recorder.reset();
2032	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2033	+	assertFalse(future.isDone());
2034	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2035	+	assertSame(p, recorder.p);
2036	+
2037	+	recorder.reset();
2038	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2039	+	assertFalse(future.isDone());
2040	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2041	+	assertSame(p, recorder.p);
2042	+	}
2043	+	}
2044	+
2045	+	// Checking our custom handler above should be sufficient, but
2046	+	// we add some integration tests of standard handlers.
2047	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2048	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2049	+
2050	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2051	+	try {
2052	+	p.execute(setThread);
2053	+	shouldThrow();
2054	+	} catch (RejectedExecutionException success) {}
2055	+	assertNull(thread.get());
2056	+
2057	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2058	+	p.execute(setThread);
2059	+	assertNull(thread.get());
2060	+
2061	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2062	+	p.execute(setThread);
2063	+	if (p.isShutdown())
2064	+	assertNull(thread.get());
2065	+	else
2066	+	assertSame(Thread.currentThread(), thread.get());
2067	+
2068	+	setRejectedExecutionHandler(p, savedHandler);
2069	+
2070	+	// check that pool was not perturbed by handlers
2071	+	assertEquals(savedTaskCount, p.getTaskCount());
2072	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2073	+	assertEquals(savedQueueSize, p.getQueue().size());
2074	+	}
2075		}

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