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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.125 by jsr166, Thu Jan 15 18:58:07 2015 UTC vs.
Revision 1.237 by jsr166, Wed Aug 23 05:33:00 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;
57		import java.security.CodeSource;
58		import java.security.Permission;
59		import java.security.PermissionCollection;
#	Line 25 | 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;
71		import java.util.List;
72		import java.util.NoSuchElementException;
73		import java.util.PropertyPermission;
#	Line 34 | 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
102		import junit.framework.AssertionFailedError;
103		import junit.framework.Test;
104		import junit.framework.TestCase;
105	+	import junit.framework.TestResult;
106		import junit.framework.TestSuite;
107
108		/**
#	Line 61 | 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 83 | 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
104	<	* 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 159 | Line 212 | public class JSR166TestCase extends Test
212		Integer.getInteger("jsr166.runsPerTest", 1);
213
214		/**
215	+	* The number of repetitions of the test suite (for finding leaks?).
216	+	*/
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	+
261	+	/**
262		* A filter for tests to run, matching strings of the form
263		* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
264		* Usefully combined with jsr166.runsPerTest.
#	Line 170 | 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();
188	<	long t0 = System.nanoTime();
189	<	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		}
349
350		/**
351		* Runs all JSR166 unit tests using junit.textui.TestRunner.
200	–	* Optional command line arg provides the number of iterations to
201	–	* repeat running the tests.
352		*/
353		public static void main(String[] args) {
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.
388	+	*/
389	+	static void main(Test suite, String[] args) {
390		if (useSecurityManager) {
391		System.err.println("Setting a permissive security manager");
392		Policy.setPolicy(permissivePolicy());
393		System.setSecurityManager(new SecurityManager());
394		}
395	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
396	<
397	<	Test s = suite();
398	<	for (int i = 0; i < iters; ++i) {
213	<	junit.textui.TestRunner.run(s);
395	>	for (int i = 0; i < suiteRuns; i++) {
396	>	TestResult result = newPithyTestRunner().doRun(suite);
397	>	if (!result.wasSuccessful())
398	>	System.exit(1);
399		System.gc();
400		System.runFinalization();
401		}
217	–	System.exit(0);
402		}
403
404		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 265 | Line 449 | public class JSR166TestCase extends Test
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() {
452	<	// As of 2014-05, java9 still uses 52.0 class file version
453	<	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
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		/**
#	Line 288 | 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 310 | 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 338 | 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	+	"HashMapTest",
548	+	"LinkedBlockingDeque8Test",
549	+	"LinkedBlockingQueue8Test",
550		"LongAccumulatorTest",
551		"LongAdderTest",
552		"SplittableRandomTest",
553		"StampedLockTest",
554	+	"SubmissionPublisherTest",
555		"ThreadLocalRandom8Test",
556	+	"TimeUnit8Test",
557		};
558		addNamedTestClasses(suite, java8TestClassNames);
559		}
#	Line 363 | Line 561 | public class JSR166TestCase extends Test
561		// Java9+ test classes
562		if (atLeastJava9()) {
563		String[] java9TestClassNames = {
564	<	"ThreadPoolExecutor9Test",
564	>	"AtomicBoolean9Test",
565	>	"AtomicInteger9Test",
566	>	"AtomicIntegerArray9Test",
567	>	"AtomicLong9Test",
568	>	"AtomicLongArray9Test",
569	>	"AtomicReference9Test",
570	>	"AtomicReferenceArray9Test",
571	>	"ExecutorCompletionService9Test",
572	>	"ForkJoinPool9Test",
573		};
574		addNamedTestClasses(suite, java9TestClassNames);
575		}
#	Line 371 | Line 577 | public class JSR166TestCase extends Test
577		return suite;
578		}
579
580	+	/** Returns list of junit-style test method names in given class. */
581	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
582	+	Method[] methods = testClass.getDeclaredMethods();
583	+	ArrayList<String> names = new ArrayList<>(methods.length);
584	+	for (Method method : methods) {
585	+	if (method.getName().startsWith("test")
586	+	&& Modifier.isPublic(method.getModifiers())
587	+	// method.getParameterCount() requires jdk8+
588	+	&& method.getParameterTypes().length == 0) {
589	+	names.add(method.getName());
590	+	}
591	+	}
592	+	return names;
593	+	}
594	+
595	+	/**
596	+	* Returns junit-style testSuite for the given test class, but
597	+	* parameterized by passing extra data to each test.
598	+	*/
599	+	public static <ExtraData> Test parameterizedTestSuite
600	+	(Class<? extends JSR166TestCase> testClass,
601	+	Class<ExtraData> dataClass,
602	+	ExtraData data) {
603	+	try {
604	+	TestSuite suite = new TestSuite();
605	+	Constructor c =
606	+	testClass.getDeclaredConstructor(dataClass, String.class);
607	+	for (String methodName : testMethodNames(testClass))
608	+	suite.addTest((Test) c.newInstance(data, methodName));
609	+	return suite;
610	+	} catch (Exception e) {
611	+	throw new Error(e);
612	+	}
613	+	}
614	+
615	+	/**
616	+	* Returns junit-style testSuite for the jdk8 extension of the
617	+	* given test class, but parameterized by passing extra data to
618	+	* each test.  Uses reflection to allow compilation in jdk7.
619	+	*/
620	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
621	+	(Class<? extends JSR166TestCase> testClass,
622	+	Class<ExtraData> dataClass,
623	+	ExtraData data) {
624	+	if (atLeastJava8()) {
625	+	String name = testClass.getName();
626	+	String name8 = name.replaceAll("Test$", "8Test");
627	+	if (name.equals(name8)) throw new Error(name);
628	+	try {
629	+	return (Test)
630	+	Class.forName(name8)
631	+	.getMethod("testSuite", new Class[] { dataClass })
632	+	.invoke(null, data);
633	+	} catch (Exception e) {
634	+	throw new Error(e);
635	+	}
636	+	} else {
637	+	return new TestSuite();
638	+	}
639	+	}
640	+
641		// Delays for timing-dependent tests, in milliseconds.
642
643		public static long SHORT_DELAY_MS;
#	Line 378 | Line 645 | public class JSR166TestCase extends Test
645		public static long MEDIUM_DELAY_MS;
646		public static long LONG_DELAY_MS;
647
648	+	private static final long RANDOM_TIMEOUT;
649	+	private static final long RANDOM_EXPIRED_TIMEOUT;
650	+	private static final TimeUnit RANDOM_TIMEUNIT;
651	+	static {
652	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
653	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
654	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
655	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
656	+	TimeUnit[] timeUnits = TimeUnit.values();
657	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
658	+	}
659	+
660		/**
661	<	* Returns the shortest timed delay. This could
662	<	* be reimplemented to use for example a Property.
661	>	* Returns a timeout for use when any value at all will do.
662	>	*/
663	>	static long randomTimeout() { return RANDOM_TIMEOUT; }
664	>
665	>	/**
666	>	* Returns a timeout that means "no waiting", i.e. not positive.
667	>	*/
668	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
669	>
670	>	/**
671	>	* Returns a random non-null TimeUnit.
672	>	*/
673	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
674	>
675	>	/**
676	>	* Returns the shortest timed delay. This can be scaled up for
677	>	* slow machines using the jsr166.delay.factor system property,
678	>	* or via jtreg's -timeoutFactor: flag.
679	>	* http://openjdk.java.net/jtreg/command-help.html
680		*/
681		protected long getShortDelay() {
682	<	return 50;
682	>	return (long) (50 * delayFactor);
683		}
684
685		/**
#	Line 396 | Line 692 | public class JSR166TestCase extends Test
692		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
693		}
694
695	+	private static final long TIMEOUT_DELAY_MS
696	+	= (long) (12.0 * Math.cbrt(delayFactor));
697	+
698		/**
699	<	* Returns a timeout in milliseconds to be used in tests that
700	<	* verify that operations block or time out.
699	>	* Returns a timeout in milliseconds to be used in tests that verify
700	>	* that operations block or time out.  We want this to be longer
701	>	* than the OS scheduling quantum, but not too long, so don't scale
702	>	* linearly with delayFactor; we use "crazy" cube root instead.
703		*/
704	<	long timeoutMillis() {
705	<	return SHORT_DELAY_MS / 4;
704	>	static long timeoutMillis() {
705	>	return TIMEOUT_DELAY_MS;
706		}
707
708		/**
709	<	* Returns a new Date instance representing a time delayMillis
710	<	* milliseconds in the future.
709	>	* Returns a new Date instance representing a time at least
710	>	* delayMillis milliseconds in the future.
711		*/
712		Date delayedDate(long delayMillis) {
713	<	return new Date(System.currentTimeMillis() + delayMillis);
713	>	// Add 1 because currentTimeMillis is known to round into the past.
714	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
715		}
716
717		/**
718		* The first exception encountered if any threadAssertXXX method fails.
719		*/
720		private final AtomicReference<Throwable> threadFailure
721	<	= new AtomicReference<Throwable>(null);
721	>	= new AtomicReference<>(null);
722
723		/**
724		* Records an exception so that it can be rethrown later in the test
#	Line 425 | Line 727 | public class JSR166TestCase extends Test
727		* the same test have no effect.
728		*/
729		public void threadRecordFailure(Throwable t) {
730	+	System.err.println(t);
731	+	dumpTestThreads();
732		threadFailure.compareAndSet(null, t);
733		}
734
#	Line 432 | Line 736 | public class JSR166TestCase extends Test
736		setDelays();
737		}
738
739	+	void tearDownFail(String format, Object... args) {
740	+	String msg = toString() + ": " + String.format(format, args);
741	+	System.err.println(msg);
742	+	dumpTestThreads();
743	+	throw new AssertionFailedError(msg);
744	+	}
745	+
746		/**
747		* Extra checks that get done for all test cases.
748		*
#	Line 459 | Line 770 | public class JSR166TestCase extends Test
770		}
771
772		if (Thread.interrupted())
773	<	throw new AssertionFailedError("interrupt status set in main thread");
773	>	tearDownFail("interrupt status set in main thread");
774
775		checkForkJoinPoolThreadLeaks();
776		}
777
778		/**
779	<	* Finds missing try { ... } finally { joinPool(e); }
779	>	* Finds missing PoolCleaners
780		*/
781		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
782	<	Thread[] survivors = new Thread[5];
782	>	Thread[] survivors = new Thread[7];
783		int count = Thread.enumerate(survivors);
784		for (int i = 0; i < count; i++) {
785		Thread thread = survivors[i];
#	Line 476 | Line 787 | public class JSR166TestCase extends Test
787		if (name.startsWith("ForkJoinPool-")) {
788		// give thread some time to terminate
789		thread.join(LONG_DELAY_MS);
790	<	if (!thread.isAlive()) continue;
791	<	thread.stop();
792	<	throw new AssertionFailedError
482	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
483	<	toString(), name));
790	>	if (thread.isAlive())
791	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
792	>	thread);
793		}
794		}
795	+
796	+	if (!ForkJoinPool.commonPool()
797	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
798	+	tearDownFail("ForkJoin common pool thread stuck");
799		}
800
801		/**
#	Line 495 | Line 808 | public class JSR166TestCase extends Test
808		fail(reason);
809		} catch (AssertionFailedError t) {
810		threadRecordFailure(t);
811	<	fail(reason);
811	>	throw t;
812		}
813		}
814
#	Line 563 | Line 876 | public class JSR166TestCase extends Test
876		public void threadAssertEquals(Object x, Object y) {
877		try {
878		assertEquals(x, y);
879	<	} catch (AssertionFailedError t) {
880	<	threadRecordFailure(t);
881	<	throw t;
882	<	} catch (Throwable t) {
883	<	threadUnexpectedException(t);
879	>	} catch (AssertionFailedError fail) {
880	>	threadRecordFailure(fail);
881	>	throw fail;
882	>	} catch (Throwable fail) {
883	>	threadUnexpectedException(fail);
884		}
885		}
886
#	Line 579 | Line 892 | public class JSR166TestCase extends Test
892		public void threadAssertSame(Object x, Object y) {
893		try {
894		assertSame(x, y);
895	<	} catch (AssertionFailedError t) {
896	<	threadRecordFailure(t);
897	<	throw t;
895	>	} catch (AssertionFailedError fail) {
896	>	threadRecordFailure(fail);
897	>	throw fail;
898		}
899		}
900
#	Line 622 | Line 935 | public class JSR166TestCase extends Test
935		/**
936		* Delays, via Thread.sleep, for the given millisecond delay, but
937		* if the sleep is shorter than specified, may re-sleep or yield
938	<	* until time elapses.
938	>	* until time elapses.  Ensures that the given time, as measured
939	>	* by System.nanoTime(), has elapsed.
940		*/
941		static void delay(long millis) throws InterruptedException {
942	<	long startTime = System.nanoTime();
943	<	long ns = millis * 1000 * 1000;
944	<	for (;;) {
942	>	long nanos = millis * (1000 * 1000);
943	>	final long wakeupTime = System.nanoTime() + nanos;
944	>	do {
945		if (millis > 0L)
946		Thread.sleep(millis);
947		else // too short to sleep
948		Thread.yield();
949	<	long d = ns - (System.nanoTime() - startTime);
950	<	if (d > 0L)
951	<	millis = d / (1000 * 1000);
952	<	else
953	<	break;
949	>	nanos = wakeupTime - System.nanoTime();
950	>	millis = nanos / (1000 * 1000);
951	>	} while (nanos >= 0L);
952	>	}
953	>
954	>	/**
955	>	* Allows use of try-with-resources with per-test thread pools.
956	>	*/
957	>	class PoolCleaner implements AutoCloseable {
958	>	private final ExecutorService pool;
959	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
960	>	public void close() { joinPool(pool); }
961	>	}
962	>
963	>	/**
964	>	* An extension of PoolCleaner that has an action to release the pool.
965	>	*/
966	>	class PoolCleanerWithReleaser extends PoolCleaner {
967	>	private final Runnable releaser;
968	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
969	>	super(pool);
970	>	this.releaser = releaser;
971	>	}
972	>	public void close() {
973	>	try {
974	>	releaser.run();
975	>	} finally {
976	>	super.close();
977	>	}
978		}
979		}
980
981	+	PoolCleaner cleaner(ExecutorService pool) {
982	+	return new PoolCleaner(pool);
983	+	}
984	+
985	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
986	+	return new PoolCleanerWithReleaser(pool, releaser);
987	+	}
988	+
989	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
990	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
991	+	}
992	+
993	+	Runnable releaser(final CountDownLatch latch) {
994	+	return new Runnable() { public void run() {
995	+	do { latch.countDown(); }
996	+	while (latch.getCount() > 0);
997	+	}};
998	+	}
999	+
1000	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1001	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1002	+	}
1003	+
1004	+	Runnable releaser(final AtomicBoolean flag) {
1005	+	return new Runnable() { public void run() { flag.set(true); }};
1006	+	}
1007	+
1008		/**
1009		* Waits out termination of a thread pool or fails doing so.
1010		*/
1011	<	void joinPool(ExecutorService exec) {
1011	>	void joinPool(ExecutorService pool) {
1012		try {
1013	<	exec.shutdown();
1014	<	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
1015	<	fail("ExecutorService " + exec +
1016	<	" did not terminate in a timely manner");
1013	>	pool.shutdown();
1014	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1015	>	try {
1016	>	threadFail("ExecutorService " + pool +
1017	>	" did not terminate in a timely manner");
1018	>	} finally {
1019	>	// last resort, for the benefit of subsequent tests
1020	>	pool.shutdownNow();
1021	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1022	>	}
1023	>	}
1024		} catch (SecurityException ok) {
1025		// Allowed in case test doesn't have privs
1026	<	} catch (InterruptedException ie) {
1027	<	fail("Unexpected InterruptedException");
1026	>	} catch (InterruptedException fail) {
1027	>	threadFail("Unexpected InterruptedException");
1028		}
1029		}
1030
1031		/**
1032	<	* A debugging tool to print all stack traces, as jstack does.
1032	>	* Like Runnable, but with the freedom to throw anything.
1033	>	* junit folks had the same idea:
1034	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1035		*/
1036	<	static void printAllStackTraces() {
663	<	for (ThreadInfo info :
664	<	ManagementFactory.getThreadMXBean()
665	<	.dumpAllThreads(true, true))
666	<	System.err.print(info);
667	<	}
1036	>	interface Action { public void run() throws Throwable; }
1037
1038		/**
1039	<	* Checks that thread does not terminate within the default
1040	<	* millisecond delay of {@code timeoutMillis()}.
1039	>	* Runs all the given actions in parallel, failing if any fail.
1040	>	* Useful for running multiple variants of tests that are
1041	>	* necessarily individually slow because they must block.
1042		*/
1043	<	void assertThreadStaysAlive(Thread thread) {
1044	<	assertThreadStaysAlive(thread, timeoutMillis());
1043	>	void testInParallel(Action ... actions) {
1044	>	ExecutorService pool = Executors.newCachedThreadPool();
1045	>	try (PoolCleaner cleaner = cleaner(pool)) {
1046	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1047	>	for (final Action action : actions)
1048	>	futures.add(pool.submit(new CheckedRunnable() {
1049	>	public void realRun() throws Throwable { action.run();}}));
1050	>	for (Future<?> future : futures)
1051	>	try {
1052	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1053	>	} catch (ExecutionException ex) {
1054	>	threadUnexpectedException(ex.getCause());
1055	>	} catch (Exception ex) {
1056	>	threadUnexpectedException(ex);
1057	>	}
1058	>	}
1059		}
1060
1061		/**
1062	<	* Checks that thread does not terminate within the given millisecond delay.
1062	>	* A debugging tool to print stack traces of most threads, as jstack does.
1063	>	* Uninteresting threads are filtered out.
1064		*/
1065	<	void assertThreadStaysAlive(Thread thread, long millis) {
1066	<	try {
1067	<	// No need to optimize the failing case via Thread.join.
1068	<	delay(millis);
1069	<	assertTrue(thread.isAlive());
1070	<	} catch (InterruptedException ie) {
1071	<	fail("Unexpected InterruptedException");
1065	>	static void dumpTestThreads() {
1066	>	SecurityManager sm = System.getSecurityManager();
1067	>	if (sm != null) {
1068	>	try {
1069	>	System.setSecurityManager(null);
1070	>	} catch (SecurityException giveUp) {
1071	>	return;
1072	>	}
1073		}
688	–	}
1074
1075	<	/**
1076	<	* Checks that the threads do not terminate within the default
1077	<	* millisecond delay of {@code timeoutMillis()}.
1078	<	*/
1079	<	void assertThreadsStayAlive(Thread... threads) {
1080	<	assertThreadsStayAlive(timeoutMillis(), threads);
1075	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1076	>	System.err.println("------ stacktrace dump start ------");
1077	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1078	>	final String name = info.getThreadName();
1079	>	String lockName;
1080	>	if ("Signal Dispatcher".equals(name))
1081	>	continue;
1082	>	if ("Reference Handler".equals(name)
1083	>	&& (lockName = info.getLockName()) != null
1084	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1085	>	continue;
1086	>	if ("Finalizer".equals(name)
1087	>	&& (lockName = info.getLockName()) != null
1088	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1089	>	continue;
1090	>	if ("checkForWedgedTest".equals(name))
1091	>	continue;
1092	>	System.err.print(info);
1093	>	}
1094	>	System.err.println("------ stacktrace dump end ------");
1095	>
1096	>	if (sm != null) System.setSecurityManager(sm);
1097		}
1098
1099		/**
1100	<	* Checks that the threads do not terminate within the given millisecond delay.
1100	>	* Checks that thread eventually enters the expected blocked thread state.
1101		*/
1102	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1103	<	try {
1104	<	// No need to optimize the failing case via Thread.join.
1105	<	delay(millis);
1106	<	for (Thread thread : threads)
1107	<	assertTrue(thread.isAlive());
1108	<	} catch (InterruptedException ie) {
1109	<	fail("Unexpected InterruptedException");
1102	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1103	>	// always sleep at least 1 ms, with high probability avoiding
1104	>	// transitory states
1105	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1106	>	try { delay(1); }
1107	>	catch (InterruptedException fail) {
1108	>	fail("Unexpected InterruptedException");
1109	>	}
1110	>	Thread.State s = thread.getState();
1111	>	if (s == expected)
1112	>	return;
1113	>	else if (s == Thread.State.TERMINATED)
1114	>	fail("Unexpected thread termination");
1115		}
1116	+	fail("timed out waiting for thread to enter thread state " + expected);
1117		}
1118
1119		/**
#	Line 726 | Line 1133 | public class JSR166TestCase extends Test
1133		future.get(timeoutMillis, MILLISECONDS);
1134		shouldThrow();
1135		} catch (TimeoutException success) {
1136	<	} catch (Exception e) {
1137	<	threadUnexpectedException(e);
1136	>	} catch (Exception fail) {
1137	>	threadUnexpectedException(fail);
1138		} finally { future.cancel(true); }
1139		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1140		}
#	Line 747 | Line 1154 | public class JSR166TestCase extends Test
1154		}
1155
1156		/**
1157	+	* The maximum number of consecutive spurious wakeups we should
1158	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1159	+	*/
1160	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1161	+
1162	+	/**
1163		* The number of elements to place in collections, arrays, etc.
1164		*/
1165		public static final int SIZE = 20;
#	Line 850 | Line 1263 | public class JSR166TestCase extends Test
1263		}
1264		public void refresh() {}
1265		public String toString() {
1266	<	List<Permission> ps = new ArrayList<Permission>();
1266	>	List<Permission> ps = new ArrayList<>();
1267		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1268		ps.add(e.nextElement());
1269		return "AdjustablePolicy with permissions " + ps;
#	Line 880 | Line 1293 | public class JSR166TestCase extends Test
1293		* Sleeps until the given time has elapsed.
1294		* Throws AssertionFailedError if interrupted.
1295		*/
1296	<	void sleep(long millis) {
1296	>	static void sleep(long millis) {
1297		try {
1298		delay(millis);
1299	<	} catch (InterruptedException ie) {
1299	>	} catch (InterruptedException fail) {
1300		AssertionFailedError afe =
1301		new AssertionFailedError("Unexpected InterruptedException");
1302	<	afe.initCause(ie);
1302	>	afe.initCause(fail);
1303		throw afe;
1304		}
1305		}
#	Line 896 | Line 1309 | public class JSR166TestCase extends Test
1309		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1310		*/
1311		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1312	<	long startTime = System.nanoTime();
1312	>	long startTime = 0L;
1313		for (;;) {
1314		Thread.State s = thread.getState();
1315		if (s == Thread.State.BLOCKED ||
#	Line 905 | Line 1318 | public class JSR166TestCase extends Test
1318		return;
1319		else if (s == Thread.State.TERMINATED)
1320		fail("Unexpected thread termination");
1321	+	else if (startTime == 0L)
1322	+	startTime = System.nanoTime();
1323		else if (millisElapsedSince(startTime) > timeoutMillis) {
1324		threadAssertTrue(thread.isAlive());
1325	<	return;
1325	>	fail("timed out waiting for thread to enter wait state");
1326	>	}
1327	>	Thread.yield();
1328	>	}
1329	>	}
1330	>
1331	>	/**
1332	>	* Spin-waits up to the specified number of milliseconds for the given
1333	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1334	>	* and additionally satisfy the given condition.
1335	>	*/
1336	>	void waitForThreadToEnterWaitState(
1337	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1338	>	long startTime = 0L;
1339	>	for (;;) {
1340	>	Thread.State s = thread.getState();
1341	>	if (s == Thread.State.BLOCKED ||
1342	>	s == Thread.State.WAITING ||
1343	>	s == Thread.State.TIMED_WAITING) {
1344	>	try {
1345	>	if (waitingForGodot.call())
1346	>	return;
1347	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1348	>	}
1349	>	else if (s == Thread.State.TERMINATED)
1350	>	fail("Unexpected thread termination");
1351	>	else if (startTime == 0L)
1352	>	startTime = System.nanoTime();
1353	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1354	>	threadAssertTrue(thread.isAlive());
1355	>	fail("timed out waiting for thread to enter wait state");
1356		}
1357		Thread.yield();
1358		}
1359		}
1360
1361		/**
1362	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1363	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1362	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1363	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1364		*/
1365		void waitForThreadToEnterWaitState(Thread thread) {
1366		waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1367		}
1368
1369		/**
1370	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1371	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1372	+	* and additionally satisfy the given condition.
1373	+	*/
1374	+	void waitForThreadToEnterWaitState(
1375	+	Thread thread, Callable<Boolean> waitingForGodot) {
1376	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1377	+	}
1378	+
1379	+	/**
1380		* Returns the number of milliseconds since time given by
1381		* startNanoTime, which must have been previously returned from a
1382		* call to {@link System#nanoTime()}.
#	Line 978 | Line 1433 | public class JSR166TestCase extends Test
1433		void awaitTermination(Thread t, long timeoutMillis) {
1434		try {
1435		t.join(timeoutMillis);
1436	<	} catch (InterruptedException ie) {
1437	<	threadUnexpectedException(ie);
1436	>	} catch (InterruptedException fail) {
1437	>	threadUnexpectedException(fail);
1438		} finally {
1439		if (t.getState() != Thread.State.TERMINATED) {
1440		t.interrupt();
1441	<	fail("Test timed out");
1441	>	threadFail("timed out waiting for thread to terminate");
1442		}
1443		}
1444		}
#	Line 1005 | Line 1460 | public class JSR166TestCase extends Test
1460		public final void run() {
1461		try {
1462		realRun();
1463	<	} catch (Throwable t) {
1464	<	threadUnexpectedException(t);
1463	>	} catch (Throwable fail) {
1464	>	threadUnexpectedException(fail);
1465		}
1466		}
1467		}
#	Line 1060 | Line 1515 | public class JSR166TestCase extends Test
1515		threadShouldThrow("InterruptedException");
1516		} catch (InterruptedException success) {
1517		threadAssertFalse(Thread.interrupted());
1518	<	} catch (Throwable t) {
1519	<	threadUnexpectedException(t);
1518	>	} catch (Throwable fail) {
1519	>	threadUnexpectedException(fail);
1520		}
1521		}
1522		}
#	Line 1072 | Line 1527 | public class JSR166TestCase extends Test
1527		public final T call() {
1528		try {
1529		return realCall();
1530	<	} catch (Throwable t) {
1531	<	threadUnexpectedException(t);
1530	>	} catch (Throwable fail) {
1531	>	threadUnexpectedException(fail);
1532		return null;
1533		}
1534		}
#	Line 1090 | Line 1545 | public class JSR166TestCase extends Test
1545		return result;
1546		} catch (InterruptedException success) {
1547		threadAssertFalse(Thread.interrupted());
1548	<	} catch (Throwable t) {
1549	<	threadUnexpectedException(t);
1548	>	} catch (Throwable fail) {
1549	>	threadUnexpectedException(fail);
1550		}
1551		return null;
1552		}
#	Line 1108 | Line 1563 | public class JSR166TestCase extends Test
1563		public static final String TEST_STRING = "a test string";
1564
1565		public static class StringTask implements Callable<String> {
1566	<	public String call() { return TEST_STRING; }
1566	>	final String value;
1567	>	public StringTask() { this(TEST_STRING); }
1568	>	public StringTask(String value) { this.value = value; }
1569	>	public String call() { return value; }
1570		}
1571
1572		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1121 | Line 1579 | public class JSR166TestCase extends Test
1579		}};
1580		}
1581
1582	<	public Runnable awaiter(final CountDownLatch latch) {
1582	>	public Runnable countDowner(final CountDownLatch latch) {
1583		return new CheckedRunnable() {
1584		public void realRun() throws InterruptedException {
1585	<	await(latch);
1585	>	latch.countDown();
1586		}};
1587		}
1588
1589	+	class LatchAwaiter extends CheckedRunnable {
1590	+	static final int NEW = 0;
1591	+	static final int RUNNING = 1;
1592	+	static final int DONE = 2;
1593	+	final CountDownLatch latch;
1594	+	int state = NEW;
1595	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1596	+	public void realRun() throws InterruptedException {
1597	+	state = 1;
1598	+	await(latch);
1599	+	state = 2;
1600	+	}
1601	+	}
1602	+
1603	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1604	+	return new LatchAwaiter(latch);
1605	+	}
1606	+
1607	+	public void await(CountDownLatch latch, long timeoutMillis) {
1608	+	try {
1609	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1610	+	fail("timed out waiting for CountDownLatch for "
1611	+	+ (timeoutMillis/1000) + " sec");
1612	+	} catch (Throwable fail) {
1613	+	threadUnexpectedException(fail);
1614	+	}
1615	+	}
1616	+
1617		public void await(CountDownLatch latch) {
1618	+	await(latch, LONG_DELAY_MS);
1619	+	}
1620	+
1621	+	public void await(Semaphore semaphore) {
1622		try {
1623	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1624	<	} catch (Throwable t) {
1625	<	threadUnexpectedException(t);
1623	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1624	>	fail("timed out waiting for Semaphore for "
1625	>	+ (LONG_DELAY_MS/1000) + " sec");
1626	>	} catch (Throwable fail) {
1627	>	threadUnexpectedException(fail);
1628		}
1629		}
1630
1631	<	public void await(Semaphore semaphore) {
1631	>	public void await(CyclicBarrier barrier) {
1632		try {
1633	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1634	<	} catch (Throwable t) {
1635	<	threadUnexpectedException(t);
1633	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1634	>	} catch (Throwable fail) {
1635	>	threadUnexpectedException(fail);
1636		}
1637		}
1638
#	Line 1167 | Line 1659 | public class JSR166TestCase extends Test
1659		public String call() { throw new NullPointerException(); }
1660		}
1661
1170	–	public static class CallableOne implements Callable<Integer> {
1171	–	public Integer call() { return one; }
1172	–	}
1173	–
1174	–	public class ShortRunnable extends CheckedRunnable {
1175	–	protected void realRun() throws Throwable {
1176	–	delay(SHORT_DELAY_MS);
1177	–	}
1178	–	}
1179	–
1180	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1181	–	protected void realRun() throws InterruptedException {
1182	–	delay(SHORT_DELAY_MS);
1183	–	}
1184	–	}
1185	–
1186	–	public class SmallRunnable extends CheckedRunnable {
1187	–	protected void realRun() throws Throwable {
1188	–	delay(SMALL_DELAY_MS);
1189	–	}
1190	–	}
1191	–
1662		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1663		protected void realRun() {
1664		try {
#	Line 1197 | Line 1667 | public class JSR166TestCase extends Test
1667		}
1668		}
1669
1200	–	public class SmallCallable extends CheckedCallable {
1201	–	protected Object realCall() throws InterruptedException {
1202	–	delay(SMALL_DELAY_MS);
1203	–	return Boolean.TRUE;
1204	–	}
1205	–	}
1206	–
1207	–	public class MediumRunnable extends CheckedRunnable {
1208	–	protected void realRun() throws Throwable {
1209	–	delay(MEDIUM_DELAY_MS);
1210	–	}
1211	–	}
1212	–
1213	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1214	–	protected void realRun() throws InterruptedException {
1215	–	delay(MEDIUM_DELAY_MS);
1216	–	}
1217	–	}
1218	–
1670		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1671		return new CheckedRunnable() {
1672		protected void realRun() {
#	Line 1225 | Line 1676 | public class JSR166TestCase extends Test
1676		}};
1677		}
1678
1228	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1229	–	protected void realRun() {
1230	–	try {
1231	–	delay(MEDIUM_DELAY_MS);
1232	–	} catch (InterruptedException ok) {}
1233	–	}
1234	–	}
1235	–
1236	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1237	–	protected void realRun() {
1238	–	try {
1239	–	delay(LONG_DELAY_MS);
1240	–	} catch (InterruptedException ok) {}
1241	–	}
1242	–	}
1243	–
1679		/**
1680		* For use as ThreadFactory in constructors
1681		*/
#	Line 1254 | Line 1689 | public class JSR166TestCase extends Test
1689		boolean isDone();
1690		}
1691
1257	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1258	–	return new TrackedRunnable() {
1259	–	private volatile boolean done = false;
1260	–	public boolean isDone() { return done; }
1261	–	public void run() {
1262	–	try {
1263	–	delay(timeoutMillis);
1264	–	done = true;
1265	–	} catch (InterruptedException ok) {}
1266	–	}
1267	–	};
1268	–	}
1269	–
1270	–	public static class TrackedShortRunnable implements Runnable {
1271	–	public volatile boolean done = false;
1272	–	public void run() {
1273	–	try {
1274	–	delay(SHORT_DELAY_MS);
1275	–	done = true;
1276	–	} catch (InterruptedException ok) {}
1277	–	}
1278	–	}
1279	–
1280	–	public static class TrackedSmallRunnable implements Runnable {
1281	–	public volatile boolean done = false;
1282	–	public void run() {
1283	–	try {
1284	–	delay(SMALL_DELAY_MS);
1285	–	done = true;
1286	–	} catch (InterruptedException ok) {}
1287	–	}
1288	–	}
1289	–
1290	–	public static class TrackedMediumRunnable implements Runnable {
1291	–	public volatile boolean done = false;
1292	–	public void run() {
1293	–	try {
1294	–	delay(MEDIUM_DELAY_MS);
1295	–	done = true;
1296	–	} catch (InterruptedException ok) {}
1297	–	}
1298	–	}
1299	–
1300	–	public static class TrackedLongRunnable implements Runnable {
1301	–	public volatile boolean done = false;
1302	–	public void run() {
1303	–	try {
1304	–	delay(LONG_DELAY_MS);
1305	–	done = true;
1306	–	} catch (InterruptedException ok) {}
1307	–	}
1308	–	}
1309	–
1692		public static class TrackedNoOpRunnable implements Runnable {
1693		public volatile boolean done = false;
1694		public void run() {
#	Line 1314 | Line 1696 | public class JSR166TestCase extends Test
1696		}
1697		}
1698
1317	–	public static class TrackedCallable implements Callable {
1318	–	public volatile boolean done = false;
1319	–	public Object call() {
1320	–	try {
1321	–	delay(SMALL_DELAY_MS);
1322	–	done = true;
1323	–	} catch (InterruptedException ok) {}
1324	–	return Boolean.TRUE;
1325	–	}
1326	–	}
1327	–
1699		/**
1700		* Analog of CheckedRunnable for RecursiveAction
1701		*/
#	Line 1334 | Line 1705 | public class JSR166TestCase extends Test
1705		@Override protected final void compute() {
1706		try {
1707		realCompute();
1708	<	} catch (Throwable t) {
1709	<	threadUnexpectedException(t);
1708	>	} catch (Throwable fail) {
1709	>	threadUnexpectedException(fail);
1710		}
1711		}
1712		}
#	Line 1349 | Line 1720 | public class JSR166TestCase extends Test
1720		@Override protected final T compute() {
1721		try {
1722		return realCompute();
1723	<	} catch (Throwable t) {
1724	<	threadUnexpectedException(t);
1723	>	} catch (Throwable fail) {
1724	>	threadUnexpectedException(fail);
1725		return null;
1726		}
1727		}
#	Line 1368 | Line 1739 | public class JSR166TestCase extends Test
1739		* A CyclicBarrier that uses timed await and fails with
1740		* AssertionFailedErrors instead of throwing checked exceptions.
1741		*/
1742	<	public class CheckedBarrier extends CyclicBarrier {
1742	>	public static class CheckedBarrier extends CyclicBarrier {
1743		public CheckedBarrier(int parties) { super(parties); }
1744
1745		public int await() {
1746		try {
1747		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1748	<	} catch (TimeoutException e) {
1748	>	} catch (TimeoutException timedOut) {
1749		throw new AssertionFailedError("timed out");
1750	<	} catch (Exception e) {
1750	>	} catch (Exception fail) {
1751		AssertionFailedError afe =
1752	<	new AssertionFailedError("Unexpected exception: " + e);
1753	<	afe.initCause(e);
1752	>	new AssertionFailedError("Unexpected exception: " + fail);
1753	>	afe.initCause(fail);
1754		throw afe;
1755		}
1756		}
#	Line 1391 | Line 1762 | public class JSR166TestCase extends Test
1762		assertEquals(0, q.size());
1763		assertNull(q.peek());
1764		assertNull(q.poll());
1765	<	assertNull(q.poll(0, MILLISECONDS));
1765	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1766		assertEquals(q.toString(), "[]");
1767		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1768		assertFalse(q.iterator().hasNext());
#	Line 1407 | Line 1778 | public class JSR166TestCase extends Test
1778		q.remove();
1779		shouldThrow();
1780		} catch (NoSuchElementException success) {}
1781	<	} catch (InterruptedException ie) {
1411	<	threadUnexpectedException(ie);
1412	<	}
1781	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1782		}
1783
1784		void assertSerialEquals(Object x, Object y) {
#	Line 1428 | Line 1797 | public class JSR166TestCase extends Test
1797		oos.flush();
1798		oos.close();
1799		return bos.toByteArray();
1800	<	} catch (Throwable t) {
1801	<	threadUnexpectedException(t);
1800	>	} catch (Throwable fail) {
1801	>	threadUnexpectedException(fail);
1802		return new byte[0];
1803		}
1804		}
1805
1806	+	void assertImmutable(final Object o) {
1807	+	if (o instanceof Collection) {
1808	+	assertThrows(
1809	+	UnsupportedOperationException.class,
1810	+	new Runnable() { public void run() {
1811	+	((Collection) o).add(null);}});
1812	+	}
1813	+	}
1814	+
1815		@SuppressWarnings("unchecked")
1816		<T> T serialClone(T o) {
1817		try {
1818		ObjectInputStream ois = new ObjectInputStream
1819		(new ByteArrayInputStream(serialBytes(o)));
1820		T clone = (T) ois.readObject();
1821	+	if (o == clone) assertImmutable(o);
1822		assertSame(o.getClass(), clone.getClass());
1823		return clone;
1824	<	} catch (Throwable t) {
1825	<	threadUnexpectedException(t);
1824	>	} catch (Throwable fail) {
1825	>	threadUnexpectedException(fail);
1826	>	return null;
1827	>	}
1828	>	}
1829	>
1830	>	/**
1831	>	* A version of serialClone that leaves error handling (for
1832	>	* e.g. NotSerializableException) up to the caller.
1833	>	*/
1834	>	@SuppressWarnings("unchecked")
1835	>	<T> T serialClonePossiblyFailing(T o)
1836	>	throws ReflectiveOperationException, java.io.IOException {
1837	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1838	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1839	>	oos.writeObject(o);
1840	>	oos.flush();
1841	>	oos.close();
1842	>	ObjectInputStream ois = new ObjectInputStream
1843	>	(new ByteArrayInputStream(bos.toByteArray()));
1844	>	T clone = (T) ois.readObject();
1845	>	if (o == clone) assertImmutable(o);
1846	>	assertSame(o.getClass(), clone.getClass());
1847	>	return clone;
1848	>	}
1849	>
1850	>	/**
1851	>	* If o implements Cloneable and has a public clone method,
1852	>	* returns a clone of o, else null.
1853	>	*/
1854	>	@SuppressWarnings("unchecked")
1855	>	<T> T cloneableClone(T o) {
1856	>	if (!(o instanceof Cloneable)) return null;
1857	>	final T clone;
1858	>	try {
1859	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1860	>	} catch (NoSuchMethodException ok) {
1861		return null;
1862	+	} catch (ReflectiveOperationException unexpected) {
1863	+	throw new Error(unexpected);
1864		}
1865	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1866	+	assertSame(o.getClass(), clone.getClass());
1867	+	return clone;
1868		}
1869
1870		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
#	Line 1468 | Line 1887 | public class JSR166TestCase extends Test
1887		shouldThrow(expectedExceptionClass.getName());
1888		}
1889		}
1890	+
1891	+	public void assertIteratorExhausted(Iterator<?> it) {
1892	+	try {
1893	+	it.next();
1894	+	shouldThrow();
1895	+	} catch (NoSuchElementException success) {}
1896	+	assertFalse(it.hasNext());
1897	+	}
1898	+
1899	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1900	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1901	+	}
1902	+
1903	+	public Runnable runnableThrowing(final RuntimeException ex) {
1904	+	return new Runnable() { public void run() { throw ex; }};
1905	+	}
1906	+
1907	+	/** A reusable thread pool to be shared by tests. */
1908	+	static final ExecutorService cachedThreadPool =
1909	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1910	+	1000L, MILLISECONDS,
1911	+	new SynchronousQueue<Runnable>());
1912	+
1913	+	static <T> void shuffle(T[] array) {
1914	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1915	+	}
1916	+
1917	+	/**
1918	+	* Returns the same String as would be returned by {@link
1919	+	* Object#toString}, whether or not the given object's class
1920	+	* overrides toString().
1921	+	*
1922	+	* @see System#identityHashCode
1923	+	*/
1924	+	static String identityString(Object x) {
1925	+	return x.getClass().getName()
1926	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1927	+	}
1928	+
1929	+	// --- Shared assertions for Executor tests ---
1930	+
1931	+	/**
1932	+	* Returns maximum number of tasks that can be submitted to given
1933	+	* pool (with bounded queue) before saturation (when submission
1934	+	* throws RejectedExecutionException).
1935	+	*/
1936	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1937	+	BlockingQueue<Runnable> q = pool.getQueue();
1938	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1939	+	}
1940	+
1941	+	@SuppressWarnings("FutureReturnValueIgnored")
1942	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1943	+	try {
1944	+	e.execute((Runnable) null);
1945	+	shouldThrow();
1946	+	} catch (NullPointerException success) {}
1947	+
1948	+	if (! (e instanceof ExecutorService)) return;
1949	+	ExecutorService es = (ExecutorService) e;
1950	+	try {
1951	+	es.submit((Runnable) null);
1952	+	shouldThrow();
1953	+	} catch (NullPointerException success) {}
1954	+	try {
1955	+	es.submit((Runnable) null, Boolean.TRUE);
1956	+	shouldThrow();
1957	+	} catch (NullPointerException success) {}
1958	+	try {
1959	+	es.submit((Callable) null);
1960	+	shouldThrow();
1961	+	} catch (NullPointerException success) {}
1962	+
1963	+	if (! (e instanceof ScheduledExecutorService)) return;
1964	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1965	+	try {
1966	+	ses.schedule((Runnable) null,
1967	+	randomTimeout(), randomTimeUnit());
1968	+	shouldThrow();
1969	+	} catch (NullPointerException success) {}
1970	+	try {
1971	+	ses.schedule((Callable) null,
1972	+	randomTimeout(), randomTimeUnit());
1973	+	shouldThrow();
1974	+	} catch (NullPointerException success) {}
1975	+	try {
1976	+	ses.scheduleAtFixedRate((Runnable) null,
1977	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1978	+	shouldThrow();
1979	+	} catch (NullPointerException success) {}
1980	+	try {
1981	+	ses.scheduleWithFixedDelay((Runnable) null,
1982	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1983	+	shouldThrow();
1984	+	} catch (NullPointerException success) {}
1985	+	}
1986	+
1987	+	void setRejectedExecutionHandler(
1988	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1989	+	p.setRejectedExecutionHandler(handler);
1990	+	assertSame(handler, p.getRejectedExecutionHandler());
1991	+	}
1992	+
1993	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1994	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1995	+	final long savedTaskCount = p.getTaskCount();
1996	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1997	+	final int savedQueueSize = p.getQueue().size();
1998	+	final boolean stock = (p.getClass().getClassLoader() == null);
1999	+
2000	+	Runnable r = () -> {};
2001	+	Callable<Boolean> c = () -> Boolean.TRUE;
2002	+
2003	+	class Recorder implements RejectedExecutionHandler {
2004	+	public volatile Runnable r = null;
2005	+	public volatile ThreadPoolExecutor p = null;
2006	+	public void reset() { r = null; p = null; }
2007	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2008	+	assertNull(this.r);
2009	+	assertNull(this.p);
2010	+	this.r = r;
2011	+	this.p = p;
2012	+	}
2013	+	}
2014	+
2015	+	// check custom handler is invoked exactly once per task
2016	+	Recorder recorder = new Recorder();
2017	+	setRejectedExecutionHandler(p, recorder);
2018	+	for (int i = 2; i--> 0; ) {
2019	+	recorder.reset();
2020	+	p.execute(r);
2021	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2022	+	assertSame(r, recorder.r);
2023	+	assertSame(p, recorder.p);
2024	+
2025	+	recorder.reset();
2026	+	assertFalse(p.submit(r).isDone());
2027	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2028	+	assertSame(p, recorder.p);
2029	+
2030	+	recorder.reset();
2031	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2032	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2033	+	assertSame(p, recorder.p);
2034	+
2035	+	recorder.reset();
2036	+	assertFalse(p.submit(c).isDone());
2037	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2038	+	assertSame(p, recorder.p);
2039	+
2040	+	if (p instanceof ScheduledExecutorService) {
2041	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2042	+	ScheduledFuture<?> future;
2043	+
2044	+	recorder.reset();
2045	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2046	+	assertFalse(future.isDone());
2047	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2048	+	assertSame(p, recorder.p);
2049	+
2050	+	recorder.reset();
2051	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2052	+	assertFalse(future.isDone());
2053	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2054	+	assertSame(p, recorder.p);
2055	+
2056	+	recorder.reset();
2057	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2058	+	assertFalse(future.isDone());
2059	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2060	+	assertSame(p, recorder.p);
2061	+
2062	+	recorder.reset();
2063	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2064	+	assertFalse(future.isDone());
2065	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2066	+	assertSame(p, recorder.p);
2067	+	}
2068	+	}
2069	+
2070	+	// Checking our custom handler above should be sufficient, but
2071	+	// we add some integration tests of standard handlers.
2072	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2073	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2074	+
2075	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2076	+	try {
2077	+	p.execute(setThread);
2078	+	shouldThrow();
2079	+	} catch (RejectedExecutionException success) {}
2080	+	assertNull(thread.get());
2081	+
2082	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2083	+	p.execute(setThread);
2084	+	assertNull(thread.get());
2085	+
2086	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2087	+	p.execute(setThread);
2088	+	if (p.isShutdown())
2089	+	assertNull(thread.get());
2090	+	else
2091	+	assertSame(Thread.currentThread(), thread.get());
2092	+
2093	+	setRejectedExecutionHandler(p, savedHandler);
2094	+
2095	+	// check that pool was not perturbed by handlers
2096	+	assertEquals(savedTaskCount, p.getTaskCount());
2097	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2098	+	assertEquals(savedQueueSize, p.getQueue().size());
2099	+	}
2100		}

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