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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.67 by jsr166, Fri Oct 29 06:58:56 2010 UTC vs.
Revision 1.219 by jsr166, Sat Feb 18 16:37:49 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
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.PropertyPermission;
11	<	import java.util.concurrent.*;
12	<	import java.util.concurrent.atomic.AtomicReference;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests (conformance testing mode)
12	>	* @build *
13	>	* @modules java.management
14	>	* @run junit/othervm/timeout=1000 JSR166TestCase
15	>	*/
16	>
17	>	/*
18	>	* @test
19	>	* @summary JSR-166 tck tests (whitebox tests allowed)
20	>	* @build *
21	>	* @modules java.base/java.util.concurrent:open
22	>	*          java.base/java.lang:open
23	>	*          java.management
24	>	* @run junit/othervm/timeout=1000
25	>	*      -Djsr166.testImplementationDetails=true
26	>	*      JSR166TestCase
27	>	* @run junit/othervm/timeout=1000
28	>	*      -Djsr166.testImplementationDetails=true
29	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
30	>	*      JSR166TestCase
31	>	* @run junit/othervm/timeout=1000
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	>	*      -Djsr166.testImplementationDetails=true
38	>	*      JSR166TestCase
39	>	*/
40	>
41		import static java.util.concurrent.TimeUnit.MILLISECONDS;
42	+	import static java.util.concurrent.TimeUnit.MINUTES;
43		import static java.util.concurrent.TimeUnit.NANOSECONDS;
44	+
45	+	import java.io.ByteArrayInputStream;
46	+	import java.io.ByteArrayOutputStream;
47	+	import java.io.ObjectInputStream;
48	+	import java.io.ObjectOutputStream;
49	+	import java.lang.management.ManagementFactory;
50	+	import java.lang.management.ThreadInfo;
51	+	import java.lang.management.ThreadMXBean;
52	+	import java.lang.reflect.Constructor;
53	+	import java.lang.reflect.Method;
54	+	import java.lang.reflect.Modifier;
55	+	import java.nio.file.Files;
56	+	import java.nio.file.Paths;
57		import java.security.CodeSource;
58		import java.security.Permission;
59		import java.security.PermissionCollection;
#	Line 19 | Line 61 | import java.security.Permissions;
61		import java.security.Policy;
62		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;
74	+	import java.util.concurrent.BlockingQueue;
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.Executors;
80	+	import java.util.concurrent.ExecutorService;
81	+	import java.util.concurrent.ForkJoinPool;
82	+	import java.util.concurrent.Future;
83	+	import java.util.concurrent.RecursiveAction;
84	+	import java.util.concurrent.RecursiveTask;
85	+	import java.util.concurrent.RejectedExecutionHandler;
86	+	import java.util.concurrent.Semaphore;
87	+	import java.util.concurrent.SynchronousQueue;
88	+	import java.util.concurrent.ThreadFactory;
89	+	import java.util.concurrent.ThreadLocalRandom;
90	+	import java.util.concurrent.ThreadPoolExecutor;
91	+	import java.util.concurrent.TimeoutException;
92	+	import java.util.concurrent.atomic.AtomicBoolean;
93	+	import java.util.concurrent.atomic.AtomicReference;
94	+	import java.util.regex.Matcher;
95	+	import java.util.regex.Pattern;
96	+
97	+	import junit.framework.AssertionFailedError;
98	+	import junit.framework.Test;
99	+	import junit.framework.TestCase;
100	+	import junit.framework.TestResult;
101	+	import junit.framework.TestSuite;
102
103		/**
104		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 30 | Line 110 | import java.security.SecurityPermission;
110		*
111		* <ol>
112		*
113	<	* <li> All assertions in code running in generated threads must use
113	>	* <li>All assertions in code running in generated threads must use
114		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
115		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
116		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
117		* particularly recommended) for other code to use these forms too.
118		* Only the most typically used JUnit assertion methods are defined
119	<	* this way, but enough to live with.</li>
119	>	* this way, but enough to live with.
120		*
121	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
121	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
122		* to invoke {@code super.setUp} and {@code super.tearDown} within
123		* them. These methods are used to clear and check for thread
124	<	* assertion failures.</li>
124	>	* assertion failures.
125		*
126		* <li>All delays and timeouts must use one of the constants {@code
127		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 52 | Line 132 | import java.security.SecurityPermission;
132		* is always discriminable as larger than SHORT and smaller than
133		* MEDIUM.  And so on. These constants are set to conservative values,
134		* but even so, if there is ever any doubt, they can all be increased
135	<	* in one spot to rerun tests on slower platforms.</li>
135	>	* in one spot to rerun tests on slower platforms.
136		*
137	<	* <li> All threads generated must be joined inside each test case
137	>	* <li>All threads generated must be joined inside each test case
138		* method (or {@code fail} to do so) before returning from the
139		* method. The {@code joinPool} method can be used to do this when
140	<	* using Executors.</li>
140	>	* using Executors.
141		*
142		* </ol>
143		*
144	<	* <p> <b>Other notes</b>
144	>	* <p><b>Other notes</b>
145		* <ul>
146		*
147	<	* <li> Usually, there is one testcase method per JSR166 method
147	>	* <li>Usually, there is one testcase method per JSR166 method
148		* covering "normal" operation, and then as many exception-testing
149		* methods as there are exceptions the method can throw. Sometimes
150		* there are multiple tests per JSR166 method when the different
151		* "normal" behaviors differ significantly. And sometimes testcases
152	<	* cover multiple methods when they cannot be tested in
73	<	* isolation.</li>
152	>	* cover multiple methods when they cannot be tested in isolation.
153		*
154	<	* <li> The documentation style for testcases is to provide as javadoc
154	>	* <li>The documentation style for testcases is to provide as javadoc
155		* a simple sentence or two describing the property that the testcase
156		* method purports to test. The javadocs do not say anything about how
157	<	* the property is tested. To find out, read the code.</li>
157	>	* the property is tested. To find out, read the code.
158		*
159	<	* <li> These tests are "conformance tests", and do not attempt to
159	>	* <li>These tests are "conformance tests", and do not attempt to
160		* test throughput, latency, scalability or other performance factors
161		* (see the separate "jtreg" tests for a set intended to check these
162		* for the most central aspects of functionality.) So, most tests use
163		* the smallest sensible numbers of threads, collection sizes, etc
164	<	* needed to check basic conformance.</li>
164	>	* needed to check basic conformance.
165		*
166		* <li>The test classes currently do not declare inclusion in
167		* any particular package to simplify things for people integrating
168	<	* them in TCK test suites.</li>
168	>	* them in TCK test suites.
169		*
170	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
171	<	* runs all JSR166 unit tests.</li>
170	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
171	>	* runs all JSR166 unit tests.
172		*
173		* </ul>
174		*/
#	Line 101 | Line 180 | public class JSR166TestCase extends Test
180		Boolean.getBoolean("jsr166.expensiveTests");
181
182		/**
183	+	* If true, also run tests that are not part of the official tck
184	+	* because they test unspecified implementation details.
185	+	*/
186	+	protected static final boolean testImplementationDetails =
187	+	Boolean.getBoolean("jsr166.testImplementationDetails");
188	+
189	+	/**
190		* If true, report on stdout all "slow" tests, that is, ones that
191		* take more than profileThreshold milliseconds to execute.
192		*/
#	Line 114 | Line 200 | public class JSR166TestCase extends Test
200		private static final long profileThreshold =
201		Long.getLong("jsr166.profileThreshold", 100);
202
203	+	/**
204	+	* The number of repetitions per test (for tickling rare bugs).
205	+	*/
206	+	private static final int runsPerTest =
207	+	Integer.getInteger("jsr166.runsPerTest", 1);
208	+
209	+	/**
210	+	* The number of repetitions of the test suite (for finding leaks?).
211	+	*/
212	+	private static final int suiteRuns =
213	+	Integer.getInteger("jsr166.suiteRuns", 1);
214	+
215	+	/**
216	+	* Returns the value of the system property, or NaN if not defined.
217	+	*/
218	+	private static float systemPropertyValue(String name) {
219	+	String floatString = System.getProperty(name);
220	+	if (floatString == null)
221	+	return Float.NaN;
222	+	try {
223	+	return Float.parseFloat(floatString);
224	+	} catch (NumberFormatException ex) {
225	+	throw new IllegalArgumentException(
226	+	String.format("Bad float value in system property %s=%s",
227	+	name, floatString));
228	+	}
229	+	}
230	+
231	+	/**
232	+	* The scaling factor to apply to standard delays used in tests.
233	+	* May be initialized from any of:
234	+	* - the "jsr166.delay.factor" system property
235	+	* - the "test.timeout.factor" system property (as used by jtreg)
236	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
237	+	* - hard-coded fuzz factor when using a known slowpoke VM
238	+	*/
239	+	private static final float delayFactor = delayFactor();
240	+
241	+	private static float delayFactor() {
242	+	float x;
243	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
244	+	return x;
245	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
246	+	return x;
247	+	String prop = System.getProperty("java.vm.version");
248	+	if (prop != null && prop.matches(".*debug.*"))
249	+	return 4.0f; // How much slower is fastdebug than product?!
250	+	return 1.0f;
251	+	}
252	+
253	+	public JSR166TestCase() { super(); }
254	+	public JSR166TestCase(String name) { super(name); }
255	+
256	+	/**
257	+	* A filter for tests to run, matching strings of the form
258	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
259	+	* Usefully combined with jsr166.runsPerTest.
260	+	*/
261	+	private static final Pattern methodFilter = methodFilter();
262	+
263	+	private static Pattern methodFilter() {
264	+	String regex = System.getProperty("jsr166.methodFilter");
265	+	return (regex == null) ? null : Pattern.compile(regex);
266	+	}
267	+
268	+	// Instrumentation to debug very rare, but very annoying hung test runs.
269	+	static volatile TestCase currentTestCase;
270	+	// static volatile int currentRun = 0;
271	+	static {
272	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
273	+	// Avoid spurious reports with enormous runsPerTest.
274	+	// A single test case run should never take more than 1 second.
275	+	// But let's cap it at the high end too ...
276	+	final int timeoutMinutes =
277	+	Math.min(15, Math.max(runsPerTest / 60, 1));
278	+	for (TestCase lastTestCase = currentTestCase;;) {
279	+	try { MINUTES.sleep(timeoutMinutes); }
280	+	catch (InterruptedException unexpected) { break; }
281	+	if (lastTestCase == currentTestCase) {
282	+	System.err.printf(
283	+	"Looks like we're stuck running test: %s%n",
284	+	lastTestCase);
285	+	//                     System.err.printf(
286	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
287	+	//                         lastTestCase, currentRun, runsPerTest);
288	+	//                     System.err.println("availableProcessors=" +
289	+	//                         Runtime.getRuntime().availableProcessors());
290	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
291	+	dumpTestThreads();
292	+	// one stack dump is probably enough; more would be spam
293	+	break;
294	+	}
295	+	lastTestCase = currentTestCase;
296	+	}}};
297	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
298	+	thread.setDaemon(true);
299	+	thread.start();
300	+	}
301	+
302	+	//     public static String cpuModel() {
303	+	//         try {
304	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
305	+	//                 .matcher(new String(
306	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
307	+	//             matcher.find();
308	+	//             return matcher.group(1);
309	+	//         } catch (Exception ex) { return null; }
310	+	//     }
311	+
312	+	public void runBare() throws Throwable {
313	+	currentTestCase = this;
314	+	if (methodFilter == null
315	+	|| methodFilter.matcher(toString()).find())
316	+	super.runBare();
317	+	}
318	+
319		protected void runTest() throws Throwable {
320	<	if (profileTests)
321	<	runTestProfiled();
322	<	else
323	<	super.runTest();
320	>	for (int i = 0; i < runsPerTest; i++) {
321	>	// currentRun = i;
322	>	if (profileTests)
323	>	runTestProfiled();
324	>	else
325	>	super.runTest();
326	>	}
327		}
328
329		protected void runTestProfiled() throws Throwable {
330	<	long t0 = System.nanoTime();
331	<	try {
330	>	for (int i = 0; i < 2; i++) {
331	>	long startTime = System.nanoTime();
332		super.runTest();
333	<	} finally {
334	<	long elapsedMillis =
335	<	(System.nanoTime() - t0) / (1000L * 1000L);
336	<	if (elapsedMillis >= profileThreshold)
333	>	long elapsedMillis = millisElapsedSince(startTime);
334	>	if (elapsedMillis < profileThreshold)
335	>	break;
336	>	// Never report first run of any test; treat it as a
337	>	// warmup run, notably to trigger all needed classloading,
338	>	if (i > 0)
339		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
340		}
341		}
342
343		/**
344	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
344	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
345		*/
346		public static void main(String[] args) {
347	+	main(suite(), args);
348	+	}
349	+
350	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
351	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
352	+	long runTime;
353	+	public void startTest(Test test) {}
354	+	protected void printHeader(long runTime) {
355	+	this.runTime = runTime; // defer printing for later
356	+	}
357	+	protected void printFooter(TestResult result) {
358	+	if (result.wasSuccessful()) {
359	+	getWriter().println("OK (" + result.runCount() + " tests)"
360	+	+ "  Time: " + elapsedTimeAsString(runTime));
361	+	} else {
362	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
363	+	super.printFooter(result);
364	+	}
365	+	}
366	+	}
367	+
368	+	/**
369	+	* Returns a TestRunner that doesn't bother with unnecessary
370	+	* fluff, like printing a "." for each test case.
371	+	*/
372	+	static junit.textui.TestRunner newPithyTestRunner() {
373	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
374	+	runner.setPrinter(new PithyResultPrinter(System.out));
375	+	return runner;
376	+	}
377	+
378	+	/**
379	+	* Runs all unit tests in the given test suite.
380	+	* Actual behavior influenced by jsr166.* system properties.
381	+	*/
382	+	static void main(Test suite, String[] args) {
383		if (useSecurityManager) {
384		System.err.println("Setting a permissive security manager");
385		Policy.setPolicy(permissivePolicy());
386		System.setSecurityManager(new SecurityManager());
387		}
388	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
389	<
390	<	Test s = suite();
391	<	for (int i = 0; i < iters; ++i) {
149	<	junit.textui.TestRunner.run(s);
388	>	for (int i = 0; i < suiteRuns; i++) {
389	>	TestResult result = newPithyTestRunner().doRun(suite);
390	>	if (!result.wasSuccessful())
391	>	System.exit(1);
392		System.gc();
393		System.runFinalization();
394		}
153	–	System.exit(0);
395		}
396
397		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 166 | Line 407 | public class JSR166TestCase extends Test
407		return suite;
408		}
409
410	+	public static void addNamedTestClasses(TestSuite suite,
411	+	String... testClassNames) {
412	+	for (String testClassName : testClassNames) {
413	+	try {
414	+	Class<?> testClass = Class.forName(testClassName);
415	+	Method m = testClass.getDeclaredMethod("suite",
416	+	new Class<?>[0]);
417	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
418	+	} catch (Exception e) {
419	+	throw new Error("Missing test class", e);
420	+	}
421	+	}
422	+	}
423	+
424	+	public static final double JAVA_CLASS_VERSION;
425	+	public static final String JAVA_SPECIFICATION_VERSION;
426	+	static {
427	+	try {
428	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
429	+	new java.security.PrivilegedAction<Double>() {
430	+	public Double run() {
431	+	return Double.valueOf(System.getProperty("java.class.version"));}});
432	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
433	+	new java.security.PrivilegedAction<String>() {
434	+	public String run() {
435	+	return System.getProperty("java.specification.version");}});
436	+	} catch (Throwable t) {
437	+	throw new Error(t);
438	+	}
439	+	}
440	+
441	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
442	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
443	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
444	+	public static boolean atLeastJava9() {
445	+	return JAVA_CLASS_VERSION >= 53.0
446	+	// As of 2015-09, java9 still uses 52.0 class file version
447	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
448	+	}
449	+	public static boolean atLeastJava10() {
450	+	return JAVA_CLASS_VERSION >= 54.0
451	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
452	+	}
453	+
454		/**
455		* Collects all JSR166 unit tests as one suite.
456		*/
457		public static Test suite() {
458	<	return newTestSuite(
458	>	// Java7+ test classes
459	>	TestSuite suite = newTestSuite(
460		ForkJoinPoolTest.suite(),
461		ForkJoinTaskTest.suite(),
462		RecursiveActionTest.suite(),
#	Line 184 | Line 470 | public class JSR166TestCase extends Test
470		AbstractQueuedLongSynchronizerTest.suite(),
471		ArrayBlockingQueueTest.suite(),
472		ArrayDequeTest.suite(),
473	+	ArrayListTest.suite(),
474		AtomicBooleanTest.suite(),
475		AtomicIntegerArrayTest.suite(),
476		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 206 | Line 493 | public class JSR166TestCase extends Test
493		CopyOnWriteArrayListTest.suite(),
494		CopyOnWriteArraySetTest.suite(),
495		CountDownLatchTest.suite(),
496	+	CountedCompleterTest.suite(),
497		CyclicBarrierTest.suite(),
498		DelayQueueTest.suite(),
499		EntryTest.suite(),
#	Line 234 | Line 522 | public class JSR166TestCase extends Test
522		TreeMapTest.suite(),
523		TreeSetTest.suite(),
524		TreeSubMapTest.suite(),
525	<	TreeSubSetTest.suite());
525	>	TreeSubSetTest.suite(),
526	>	VectorTest.suite());
527	>
528	>	// Java8+ test classes
529	>	if (atLeastJava8()) {
530	>	String[] java8TestClassNames = {
531	>	"ArrayDeque8Test",
532	>	"Atomic8Test",
533	>	"CompletableFutureTest",
534	>	"ConcurrentHashMap8Test",
535	>	"CountedCompleter8Test",
536	>	"DoubleAccumulatorTest",
537	>	"DoubleAdderTest",
538	>	"ForkJoinPool8Test",
539	>	"ForkJoinTask8Test",
540	>	"LinkedBlockingDeque8Test",
541	>	"LinkedBlockingQueue8Test",
542	>	"LongAccumulatorTest",
543	>	"LongAdderTest",
544	>	"SplittableRandomTest",
545	>	"StampedLockTest",
546	>	"SubmissionPublisherTest",
547	>	"ThreadLocalRandom8Test",
548	>	"TimeUnit8Test",
549	>	};
550	>	addNamedTestClasses(suite, java8TestClassNames);
551	>	}
552	>
553	>	// Java9+ test classes
554	>	if (atLeastJava9()) {
555	>	String[] java9TestClassNames = {
556	>	"AtomicBoolean9Test",
557	>	"AtomicInteger9Test",
558	>	"AtomicIntegerArray9Test",
559	>	"AtomicLong9Test",
560	>	"AtomicLongArray9Test",
561	>	"AtomicReference9Test",
562	>	"AtomicReferenceArray9Test",
563	>	"ExecutorCompletionService9Test",
564	>	"ForkJoinPool9Test",
565	>	};
566	>	addNamedTestClasses(suite, java9TestClassNames);
567	>	}
568	>
569	>	return suite;
570	>	}
571	>
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<>(methods.length);
576	>	for (Method method : methods) {
577	>	if (method.getName().startsWith("test")
578	>	&& Modifier.isPublic(method.getModifiers())
579	>	// method.getParameterCount() requires jdk8+
580	>	&& method.getParameterTypes().length == 0) {
581	>	names.add(method.getName());
582	>	}
583	>	}
584	>	return names;
585	>	}
586	>
587	>	/**
588	>	* Returns junit-style testSuite for the given test class, but
589	>	* parameterized by passing extra data to each test.
590	>	*/
591	>	public static <ExtraData> Test parameterizedTestSuite
592	>	(Class<? extends JSR166TestCase> testClass,
593	>	Class<ExtraData> dataClass,
594	>	ExtraData data) {
595	>	try {
596	>	TestSuite suite = new TestSuite();
597	>	Constructor c =
598	>	testClass.getDeclaredConstructor(dataClass, String.class);
599	>	for (String methodName : testMethodNames(testClass))
600	>	suite.addTest((Test) c.newInstance(data, methodName));
601	>	return suite;
602	>	} catch (Exception e) {
603	>	throw new Error(e);
604	>	}
605	>	}
606	>
607	>	/**
608	>	* Returns junit-style testSuite for the jdk8 extension of the
609	>	* given test class, but parameterized by passing extra data to
610	>	* each test.  Uses reflection to allow compilation in jdk7.
611	>	*/
612	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
613	>	(Class<? extends JSR166TestCase> testClass,
614	>	Class<ExtraData> dataClass,
615	>	ExtraData data) {
616	>	if (atLeastJava8()) {
617	>	String name = testClass.getName();
618	>	String name8 = name.replaceAll("Test$", "8Test");
619	>	if (name.equals(name8)) throw new Error(name);
620	>	try {
621	>	return (Test)
622	>	Class.forName(name8)
623	>	.getMethod("testSuite", new Class[] { dataClass })
624	>	.invoke(null, data);
625	>	} catch (Exception e) {
626	>	throw new Error(e);
627	>	}
628	>	} else {
629	>	return new TestSuite();
630	>	}
631		}
632
633	+	// Delays for timing-dependent tests, in milliseconds.
634
635		public static long SHORT_DELAY_MS;
636		public static long SMALL_DELAY_MS;
637		public static long MEDIUM_DELAY_MS;
638		public static long LONG_DELAY_MS;
639
246	–
640		/**
641	<	* Returns the shortest timed delay. This could
642	<	* be reimplemented to use for example a Property.
641	>	* Returns the shortest timed delay. This can be scaled up for
642	>	* slow machines using the jsr166.delay.factor system property,
643	>	* or via jtreg's -timeoutFactor: flag.
644	>	* http://openjdk.java.net/jtreg/command-help.html
645		*/
646		protected long getShortDelay() {
647	<	return 50;
647	>	return (long) (50 * delayFactor);
648		}
649
255	–
650		/**
651		* Sets delays as multiples of SHORT_DELAY.
652		*/
#	Line 260 | Line 654 | public class JSR166TestCase extends Test
654		SHORT_DELAY_MS = getShortDelay();
655		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
656		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
657	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
657	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
658	>	}
659	>
660	>	/**
661	>	* Returns a timeout in milliseconds to be used in tests that
662	>	* verify that operations block or time out.
663	>	*/
664	>	long timeoutMillis() {
665	>	return SHORT_DELAY_MS / 4;
666	>	}
667	>
668	>	/**
669	>	* Returns a new Date instance representing a time at least
670	>	* delayMillis milliseconds in the future.
671	>	*/
672	>	Date delayedDate(long delayMillis) {
673	>	// Add 1 because currentTimeMillis is known to round into the past.
674	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
675		}
676
677		/**
678		* The first exception encountered if any threadAssertXXX method fails.
679		*/
680		private final AtomicReference<Throwable> threadFailure
681	<	= new AtomicReference<Throwable>(null);
681	>	= new AtomicReference<>(null);
682
683		/**
684		* Records an exception so that it can be rethrown later in the test
#	Line 276 | Line 687 | public class JSR166TestCase extends Test
687		* the same test have no effect.
688		*/
689		public void threadRecordFailure(Throwable t) {
690	+	System.err.println(t);
691	+	dumpTestThreads();
692		threadFailure.compareAndSet(null, t);
693		}
694
#	Line 283 | Line 696 | public class JSR166TestCase extends Test
696		setDelays();
697		}
698
699	+	void tearDownFail(String format, Object... args) {
700	+	String msg = toString() + ": " + String.format(format, args);
701	+	System.err.println(msg);
702	+	dumpTestThreads();
703	+	throw new AssertionFailedError(msg);
704	+	}
705	+
706		/**
707	+	* Extra checks that get done for all test cases.
708	+	*
709		* Triggers test case failure if any thread assertions have failed,
710		* by rethrowing, in the test harness thread, any exception recorded
711		* earlier by threadRecordFailure.
712	+	*
713	+	* Triggers test case failure if interrupt status is set in the main thread.
714		*/
715		public void tearDown() throws Exception {
716	<	Throwable t = threadFailure.get();
716	>	Throwable t = threadFailure.getAndSet(null);
717		if (t != null) {
718		if (t instanceof Error)
719		throw (Error) t;
#	Line 304 | Line 728 | public class JSR166TestCase extends Test
728		throw afe;
729		}
730		}
731	+
732	+	if (Thread.interrupted())
733	+	tearDownFail("interrupt status set in main thread");
734	+
735	+	checkForkJoinPoolThreadLeaks();
736	+	}
737	+
738	+	/**
739	+	* Finds missing PoolCleaners
740	+	*/
741	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
742	+	Thread[] survivors = new Thread[7];
743	+	int count = Thread.enumerate(survivors);
744	+	for (int i = 0; i < count; i++) {
745	+	Thread thread = survivors[i];
746	+	String name = thread.getName();
747	+	if (name.startsWith("ForkJoinPool-")) {
748	+	// give thread some time to terminate
749	+	thread.join(LONG_DELAY_MS);
750	+	if (thread.isAlive())
751	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
752	+	thread);
753	+	}
754	+	}
755	+
756	+	if (!ForkJoinPool.commonPool()
757	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
758	+	tearDownFail("ForkJoin common pool thread stuck");
759		}
760
761		/**
#	Line 316 | Line 768 | public class JSR166TestCase extends Test
768		fail(reason);
769		} catch (AssertionFailedError t) {
770		threadRecordFailure(t);
771	<	fail(reason);
771	>	throw t;
772		}
773		}
774
#	Line 384 | Line 836 | public class JSR166TestCase extends Test
836		public void threadAssertEquals(Object x, Object y) {
837		try {
838		assertEquals(x, y);
839	<	} catch (AssertionFailedError t) {
840	<	threadRecordFailure(t);
841	<	throw t;
842	<	} catch (Throwable t) {
843	<	threadUnexpectedException(t);
839	>	} catch (AssertionFailedError fail) {
840	>	threadRecordFailure(fail);
841	>	throw fail;
842	>	} catch (Throwable fail) {
843	>	threadUnexpectedException(fail);
844		}
845		}
846
#	Line 400 | Line 852 | public class JSR166TestCase extends Test
852		public void threadAssertSame(Object x, Object y) {
853		try {
854		assertSame(x, y);
855	<	} catch (AssertionFailedError t) {
856	<	threadRecordFailure(t);
857	<	throw t;
855	>	} catch (AssertionFailedError fail) {
856	>	threadRecordFailure(fail);
857	>	throw fail;
858		}
859		}
860
#	Line 435 | Line 887 | public class JSR166TestCase extends Test
887		else {
888		AssertionFailedError afe =
889		new AssertionFailedError("unexpected exception: " + t);
890	<	t.initCause(t);
890	>	afe.initCause(t);
891		throw afe;
892		}
893		}
894
895		/**
896	+	* Delays, via Thread.sleep, for the given millisecond delay, but
897	+	* if the sleep is shorter than specified, may re-sleep or yield
898	+	* until time elapses.  Ensures that the given time, as measured
899	+	* by System.nanoTime(), has elapsed.
900	+	*/
901	+	static void delay(long millis) throws InterruptedException {
902	+	long nanos = millis * (1000 * 1000);
903	+	final long wakeupTime = System.nanoTime() + nanos;
904	+	do {
905	+	if (millis > 0L)
906	+	Thread.sleep(millis);
907	+	else // too short to sleep
908	+	Thread.yield();
909	+	nanos = wakeupTime - System.nanoTime();
910	+	millis = nanos / (1000 * 1000);
911	+	} while (nanos >= 0L);
912	+	}
913	+
914	+	/**
915	+	* Allows use of try-with-resources with per-test thread pools.
916	+	*/
917	+	class PoolCleaner implements AutoCloseable {
918	+	private final ExecutorService pool;
919	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
920	+	public void close() { joinPool(pool); }
921	+	}
922	+
923	+	/**
924	+	* An extension of PoolCleaner that has an action to release the pool.
925	+	*/
926	+	class PoolCleanerWithReleaser extends PoolCleaner {
927	+	private final Runnable releaser;
928	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
929	+	super(pool);
930	+	this.releaser = releaser;
931	+	}
932	+	public void close() {
933	+	try {
934	+	releaser.run();
935	+	} finally {
936	+	super.close();
937	+	}
938	+	}
939	+	}
940	+
941	+	PoolCleaner cleaner(ExecutorService pool) {
942	+	return new PoolCleaner(pool);
943	+	}
944	+
945	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
946	+	return new PoolCleanerWithReleaser(pool, releaser);
947	+	}
948	+
949	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
950	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
951	+	}
952	+
953	+	Runnable releaser(final CountDownLatch latch) {
954	+	return new Runnable() { public void run() {
955	+	do { latch.countDown(); }
956	+	while (latch.getCount() > 0);
957	+	}};
958	+	}
959	+
960	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
961	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
962	+	}
963	+
964	+	Runnable releaser(final AtomicBoolean flag) {
965	+	return new Runnable() { public void run() { flag.set(true); }};
966	+	}
967	+
968	+	/**
969		* Waits out termination of a thread pool or fails doing so.
970		*/
971	<	public void joinPool(ExecutorService exec) {
971	>	void joinPool(ExecutorService pool) {
972		try {
973	<	exec.shutdown();
974	<	assertTrue("ExecutorService did not terminate in a timely manner",
975	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
973	>	pool.shutdown();
974	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
975	>	try {
976	>	threadFail("ExecutorService " + pool +
977	>	" did not terminate in a timely manner");
978	>	} finally {
979	>	// last resort, for the benefit of subsequent tests
980	>	pool.shutdownNow();
981	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
982	>	}
983	>	}
984		} catch (SecurityException ok) {
985		// Allowed in case test doesn't have privs
986	<	} catch (InterruptedException ie) {
987	<	fail("Unexpected InterruptedException");
986	>	} catch (InterruptedException fail) {
987	>	threadFail("Unexpected InterruptedException");
988	>	}
989	>	}
990	>
991	>	/**
992	>	* Like Runnable, but with the freedom to throw anything.
993	>	* junit folks had the same idea:
994	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
995	>	*/
996	>	interface Action { public void run() throws Throwable; }
997	>
998	>	/**
999	>	* Runs all the given actions in parallel, failing if any fail.
1000	>	* Useful for running multiple variants of tests that are
1001	>	* necessarily individually slow because they must block.
1002	>	*/
1003	>	void testInParallel(Action ... actions) {
1004	>	ExecutorService pool = Executors.newCachedThreadPool();
1005	>	try (PoolCleaner cleaner = cleaner(pool)) {
1006	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1007	>	for (final Action action : actions)
1008	>	futures.add(pool.submit(new CheckedRunnable() {
1009	>	public void realRun() throws Throwable { action.run();}}));
1010	>	for (Future<?> future : futures)
1011	>	try {
1012	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1013	>	} catch (ExecutionException ex) {
1014	>	threadUnexpectedException(ex.getCause());
1015	>	} catch (Exception ex) {
1016	>	threadUnexpectedException(ex);
1017	>	}
1018	>	}
1019	>	}
1020	>
1021	>	/**
1022	>	* A debugging tool to print stack traces of most threads, as jstack does.
1023	>	* Uninteresting threads are filtered out.
1024	>	*/
1025	>	static void dumpTestThreads() {
1026	>	SecurityManager sm = System.getSecurityManager();
1027	>	if (sm != null) {
1028	>	try {
1029	>	System.setSecurityManager(null);
1030	>	} catch (SecurityException giveUp) {
1031	>	return;
1032	>	}
1033		}
1034	+
1035	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1036	+	System.err.println("------ stacktrace dump start ------");
1037	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1038	+	final String name = info.getThreadName();
1039	+	String lockName;
1040	+	if ("Signal Dispatcher".equals(name))
1041	+	continue;
1042	+	if ("Reference Handler".equals(name)
1043	+	&& (lockName = info.getLockName()) != null
1044	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1045	+	continue;
1046	+	if ("Finalizer".equals(name)
1047	+	&& (lockName = info.getLockName()) != null
1048	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1049	+	continue;
1050	+	if ("checkForWedgedTest".equals(name))
1051	+	continue;
1052	+	System.err.print(info);
1053	+	}
1054	+	System.err.println("------ stacktrace dump end ------");
1055	+
1056	+	if (sm != null) System.setSecurityManager(sm);
1057		}
1058
1059	+	/**
1060	+	* Checks that thread does not terminate within the default
1061	+	* millisecond delay of {@code timeoutMillis()}.
1062	+	*/
1063	+	void assertThreadStaysAlive(Thread thread) {
1064	+	assertThreadStaysAlive(thread, timeoutMillis());
1065	+	}
1066	+
1067	+	/**
1068	+	* Checks that thread does not terminate within the given millisecond delay.
1069	+	*/
1070	+	void assertThreadStaysAlive(Thread thread, long millis) {
1071	+	try {
1072	+	// No need to optimize the failing case via Thread.join.
1073	+	delay(millis);
1074	+	assertTrue(thread.isAlive());
1075	+	} catch (InterruptedException fail) {
1076	+	threadFail("Unexpected InterruptedException");
1077	+	}
1078	+	}
1079	+
1080	+	/**
1081	+	* Checks that the threads do not terminate within the default
1082	+	* millisecond delay of {@code timeoutMillis()}.
1083	+	*/
1084	+	void assertThreadsStayAlive(Thread... threads) {
1085	+	assertThreadsStayAlive(timeoutMillis(), threads);
1086	+	}
1087	+
1088	+	/**
1089	+	* Checks that the threads do not terminate within the given millisecond delay.
1090	+	*/
1091	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1092	+	try {
1093	+	// No need to optimize the failing case via Thread.join.
1094	+	delay(millis);
1095	+	for (Thread thread : threads)
1096	+	assertTrue(thread.isAlive());
1097	+	} catch (InterruptedException fail) {
1098	+	threadFail("Unexpected InterruptedException");
1099	+	}
1100	+	}
1101	+
1102	+	/**
1103	+	* Checks that future.get times out, with the default timeout of
1104	+	* {@code timeoutMillis()}.
1105	+	*/
1106	+	void assertFutureTimesOut(Future future) {
1107	+	assertFutureTimesOut(future, timeoutMillis());
1108	+	}
1109	+
1110	+	/**
1111	+	* Checks that future.get times out, with the given millisecond timeout.
1112	+	*/
1113	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1114	+	long startTime = System.nanoTime();
1115	+	try {
1116	+	future.get(timeoutMillis, MILLISECONDS);
1117	+	shouldThrow();
1118	+	} catch (TimeoutException success) {
1119	+	} catch (Exception fail) {
1120	+	threadUnexpectedException(fail);
1121	+	} finally { future.cancel(true); }
1122	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1123	+	}
1124
1125		/**
1126		* Fails with message "should throw exception".
#	Line 495 | Line 1161 | public class JSR166TestCase extends Test
1161		public static final Integer m6  = new Integer(-6);
1162		public static final Integer m10 = new Integer(-10);
1163
498	–
1164		/**
1165		* Runs Runnable r with a security policy that permits precisely
1166		* the specified permissions.  If there is no current security
#	Line 507 | Line 1172 | public class JSR166TestCase extends Test
1172		SecurityManager sm = System.getSecurityManager();
1173		if (sm == null) {
1174		r.run();
1175	+	}
1176	+	runWithSecurityManagerWithPermissions(r, permissions);
1177	+	}
1178	+
1179	+	/**
1180	+	* Runs Runnable r with a security policy that permits precisely
1181	+	* the specified permissions.  If there is no current security
1182	+	* manager, a temporary one is set for the duration of the
1183	+	* Runnable.  We require that any security manager permit
1184	+	* getPolicy/setPolicy.
1185	+	*/
1186	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1187	+	Permission... permissions) {
1188	+	SecurityManager sm = System.getSecurityManager();
1189	+	if (sm == null) {
1190		Policy savedPolicy = Policy.getPolicy();
1191		try {
1192		Policy.setPolicy(permissivePolicy());
1193		System.setSecurityManager(new SecurityManager());
1194	<	runWithPermissions(r, permissions);
1194	>	runWithSecurityManagerWithPermissions(r, permissions);
1195		} finally {
1196		System.setSecurityManager(null);
1197		Policy.setPolicy(savedPolicy);
#	Line 559 | Line 1239 | public class JSR166TestCase extends Test
1239		return perms.implies(p);
1240		}
1241		public void refresh() {}
1242	+	public String toString() {
1243	+	List<Permission> ps = new ArrayList<>();
1244	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1245	+	ps.add(e.nextElement());
1246	+	return "AdjustablePolicy with permissions " + ps;
1247	+	}
1248		}
1249
1250		/**
#	Line 584 | Line 1270 | public class JSR166TestCase extends Test
1270		* Sleeps until the given time has elapsed.
1271		* Throws AssertionFailedError if interrupted.
1272		*/
1273	<	void sleep(long millis) {
1273	>	static void sleep(long millis) {
1274		try {
1275	<	Thread.sleep(millis);
1276	<	} catch (InterruptedException ie) {
1275	>	delay(millis);
1276	>	} catch (InterruptedException fail) {
1277		AssertionFailedError afe =
1278		new AssertionFailedError("Unexpected InterruptedException");
1279	<	afe.initCause(ie);
1279	>	afe.initCause(fail);
1280		throw afe;
1281		}
1282		}
1283
1284		/**
1285	<	* Sleeps until the timeout has elapsed, or interrupted.
600	<	* Does <em>NOT</em> throw InterruptedException.
601	<	*/
602	<	void sleepTillInterrupted(long timeoutMillis) {
603	<	try {
604	<	Thread.sleep(timeoutMillis);
605	<	} catch (InterruptedException wakeup) {}
606	<	}
607	<
608	<	/**
609	<	* Waits up to the specified number of milliseconds for the given
1285	>	* Spin-waits up to the specified number of milliseconds for the given
1286		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1287		*/
1288		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1289	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
614	<	long t0 = System.nanoTime();
1289	>	long startTime = 0L;
1290		for (;;) {
1291		Thread.State s = thread.getState();
1292		if (s == Thread.State.BLOCKED ||
#	Line 620 | Line 1295 | public class JSR166TestCase extends Test
1295		return;
1296		else if (s == Thread.State.TERMINATED)
1297		fail("Unexpected thread termination");
1298	<	else if (System.nanoTime() - t0 > timeoutNanos) {
1298	>	else if (startTime == 0L)
1299	>	startTime = System.nanoTime();
1300	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1301		threadAssertTrue(thread.isAlive());
1302	<	return;
1302	>	fail("timed out waiting for thread to enter wait state");
1303	>	}
1304	>	Thread.yield();
1305	>	}
1306	>	}
1307	>
1308	>	/**
1309	>	* Spin-waits up to the specified number of milliseconds for the given
1310	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1311	>	* and additionally satisfy the given condition.
1312	>	*/
1313	>	void waitForThreadToEnterWaitState(
1314	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1315	>	long startTime = 0L;
1316	>	for (;;) {
1317	>	Thread.State s = thread.getState();
1318	>	if (s == Thread.State.BLOCKED ||
1319	>	s == Thread.State.WAITING ||
1320	>	s == Thread.State.TIMED_WAITING) {
1321	>	try {
1322	>	if (waitingForGodot.call())
1323	>	return;
1324	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1325	>	}
1326	>	else if (s == Thread.State.TERMINATED)
1327	>	fail("Unexpected thread termination");
1328	>	else if (startTime == 0L)
1329	>	startTime = System.nanoTime();
1330	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1331	>	threadAssertTrue(thread.isAlive());
1332	>	fail("timed out waiting for thread to enter wait state");
1333		}
1334		Thread.yield();
1335		}
1336		}
1337
1338		/**
1339	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1340	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1341	+	*/
1342	+	void waitForThreadToEnterWaitState(Thread thread) {
1343	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1344	+	}
1345	+
1346	+	/**
1347	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1348	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1349	+	* and additionally satisfy the given condition.
1350	+	*/
1351	+	void waitForThreadToEnterWaitState(
1352	+	Thread thread, Callable<Boolean> waitingForGodot) {
1353	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1354	+	}
1355	+
1356	+	/**
1357		* Returns the number of milliseconds since time given by
1358		* startNanoTime, which must have been previously returned from a
1359	<	* call to {@link System.nanoTime()}.
1359	>	* call to {@link System#nanoTime()}.
1360		*/
1361	<	long millisElapsedSince(long startNanoTime) {
1361	>	static long millisElapsedSince(long startNanoTime) {
1362		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1363		}
1364	<
1364	>
1365	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1366	>	//         long startTime = System.nanoTime();
1367	>	//         try {
1368	>	//             r.run();
1369	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1370	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1371	>	//             throw new AssertionFailedError("did not return promptly");
1372	>	//     }
1373	>
1374	>	//     void assertTerminatesPromptly(Runnable r) {
1375	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1376	>	//     }
1377	>
1378	>	/**
1379	>	* Checks that timed f.get() returns the expected value, and does not
1380	>	* wait for the timeout to elapse before returning.
1381	>	*/
1382	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1383	>	long startTime = System.nanoTime();
1384	>	try {
1385	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1386	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1387	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1388	>	throw new AssertionFailedError("timed get did not return promptly");
1389	>	}
1390	>
1391	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1392	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1393	>	}
1394	>
1395		/**
1396		* Returns a new started daemon Thread running the given runnable.
1397		*/
#	Line 655 | Line 1410 | public class JSR166TestCase extends Test
1410		void awaitTermination(Thread t, long timeoutMillis) {
1411		try {
1412		t.join(timeoutMillis);
1413	<	} catch (InterruptedException ie) {
1414	<	threadUnexpectedException(ie);
1413	>	} catch (InterruptedException fail) {
1414	>	threadUnexpectedException(fail);
1415		} finally {
1416	<	if (t.isAlive()) {
1416	>	if (t.getState() != Thread.State.TERMINATED) {
1417		t.interrupt();
1418	<	fail("Test timed out");
1418	>	threadFail("timed out waiting for thread to terminate");
1419		}
1420		}
1421		}
1422
1423	+	/**
1424	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1425	+	* terminate (using {@link Thread#join(long)}), else interrupts
1426	+	* the thread (in the hope that it may terminate later) and fails.
1427	+	*/
1428	+	void awaitTermination(Thread t) {
1429	+	awaitTermination(t, LONG_DELAY_MS);
1430	+	}
1431	+
1432		// Some convenient Runnable classes
1433
1434		public abstract class CheckedRunnable implements Runnable {
#	Line 673 | Line 1437 | public class JSR166TestCase extends Test
1437		public final void run() {
1438		try {
1439		realRun();
1440	<	} catch (Throwable t) {
1441	<	threadUnexpectedException(t);
1440	>	} catch (Throwable fail) {
1441	>	threadUnexpectedException(fail);
1442		}
1443		}
1444		}
#	Line 727 | Line 1491 | public class JSR166TestCase extends Test
1491		realRun();
1492		threadShouldThrow("InterruptedException");
1493		} catch (InterruptedException success) {
1494	<	} catch (Throwable t) {
1495	<	threadUnexpectedException(t);
1494	>	threadAssertFalse(Thread.interrupted());
1495	>	} catch (Throwable fail) {
1496	>	threadUnexpectedException(fail);
1497		}
1498		}
1499		}
#	Line 739 | Line 1504 | public class JSR166TestCase extends Test
1504		public final T call() {
1505		try {
1506		return realCall();
1507	<	} catch (Throwable t) {
1508	<	threadUnexpectedException(t);
1507	>	} catch (Throwable fail) {
1508	>	threadUnexpectedException(fail);
1509		return null;
1510		}
1511		}
#	Line 756 | Line 1521 | public class JSR166TestCase extends Test
1521		threadShouldThrow("InterruptedException");
1522		return result;
1523		} catch (InterruptedException success) {
1524	<	} catch (Throwable t) {
1525	<	threadUnexpectedException(t);
1524	>	threadAssertFalse(Thread.interrupted());
1525	>	} catch (Throwable fail) {
1526	>	threadUnexpectedException(fail);
1527		}
1528		return null;
1529		}
#	Line 774 | Line 1540 | public class JSR166TestCase extends Test
1540		public static final String TEST_STRING = "a test string";
1541
1542		public static class StringTask implements Callable<String> {
1543	<	public String call() { return TEST_STRING; }
1543	>	final String value;
1544	>	public StringTask() { this(TEST_STRING); }
1545	>	public StringTask(String value) { this.value = value; }
1546	>	public String call() { return value; }
1547		}
1548
1549		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 787 | Line 1556 | public class JSR166TestCase extends Test
1556		}};
1557		}
1558
1559	+	public Runnable countDowner(final CountDownLatch latch) {
1560	+	return new CheckedRunnable() {
1561	+	public void realRun() throws InterruptedException {
1562	+	latch.countDown();
1563	+	}};
1564	+	}
1565	+
1566	+	class LatchAwaiter extends CheckedRunnable {
1567	+	static final int NEW = 0;
1568	+	static final int RUNNING = 1;
1569	+	static final int DONE = 2;
1570	+	final CountDownLatch latch;
1571	+	int state = NEW;
1572	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1573	+	public void realRun() throws InterruptedException {
1574	+	state = 1;
1575	+	await(latch);
1576	+	state = 2;
1577	+	}
1578	+	}
1579	+
1580	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1581	+	return new LatchAwaiter(latch);
1582	+	}
1583	+
1584	+	public void await(CountDownLatch latch, long timeoutMillis) {
1585	+	try {
1586	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1587	+	fail("timed out waiting for CountDownLatch for "
1588	+	+ (timeoutMillis/1000) + " sec");
1589	+	} catch (Throwable fail) {
1590	+	threadUnexpectedException(fail);
1591	+	}
1592	+	}
1593	+
1594	+	public void await(CountDownLatch latch) {
1595	+	await(latch, LONG_DELAY_MS);
1596	+	}
1597	+
1598	+	public void await(Semaphore semaphore) {
1599	+	try {
1600	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1601	+	fail("timed out waiting for Semaphore for "
1602	+	+ (LONG_DELAY_MS/1000) + " sec");
1603	+	} catch (Throwable fail) {
1604	+	threadUnexpectedException(fail);
1605	+	}
1606	+	}
1607	+
1608	+	//     /**
1609	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1610	+	//      */
1611	+	//     public void await(AtomicBoolean flag) {
1612	+	//         await(flag, LONG_DELAY_MS);
1613	+	//     }
1614	+
1615	+	//     /**
1616	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1617	+	//      */
1618	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1619	+	//         long startTime = System.nanoTime();
1620	+	//         while (!flag.get()) {
1621	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1622	+	//                 throw new AssertionFailedError("timed out");
1623	+	//             Thread.yield();
1624	+	//         }
1625	+	//     }
1626	+
1627		public static class NPETask implements Callable<String> {
1628		public String call() { throw new NullPointerException(); }
1629		}
#	Line 797 | Line 1634 | public class JSR166TestCase extends Test
1634
1635		public class ShortRunnable extends CheckedRunnable {
1636		protected void realRun() throws Throwable {
1637	<	Thread.sleep(SHORT_DELAY_MS);
1637	>	delay(SHORT_DELAY_MS);
1638		}
1639		}
1640
1641		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1642		protected void realRun() throws InterruptedException {
1643	<	Thread.sleep(SHORT_DELAY_MS);
1643	>	delay(SHORT_DELAY_MS);
1644		}
1645		}
1646
1647		public class SmallRunnable extends CheckedRunnable {
1648		protected void realRun() throws Throwable {
1649	<	Thread.sleep(SMALL_DELAY_MS);
1649	>	delay(SMALL_DELAY_MS);
1650		}
1651		}
1652
1653		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1654		protected void realRun() {
1655		try {
1656	<	Thread.sleep(SMALL_DELAY_MS);
1656	>	delay(SMALL_DELAY_MS);
1657		} catch (InterruptedException ok) {}
1658		}
1659		}
1660
1661		public class SmallCallable extends CheckedCallable {
1662		protected Object realCall() throws InterruptedException {
1663	<	Thread.sleep(SMALL_DELAY_MS);
1663	>	delay(SMALL_DELAY_MS);
1664		return Boolean.TRUE;
1665		}
1666		}
1667
1668		public class MediumRunnable extends CheckedRunnable {
1669		protected void realRun() throws Throwable {
1670	<	Thread.sleep(MEDIUM_DELAY_MS);
1670	>	delay(MEDIUM_DELAY_MS);
1671		}
1672		}
1673
1674		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1675		protected void realRun() throws InterruptedException {
1676	<	Thread.sleep(MEDIUM_DELAY_MS);
1676	>	delay(MEDIUM_DELAY_MS);
1677		}
1678		}
1679
#	Line 844 | Line 1681 | public class JSR166TestCase extends Test
1681		return new CheckedRunnable() {
1682		protected void realRun() {
1683		try {
1684	<	Thread.sleep(timeoutMillis);
1684	>	delay(timeoutMillis);
1685		} catch (InterruptedException ok) {}
1686		}};
1687		}
#	Line 852 | Line 1689 | public class JSR166TestCase extends Test
1689		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1690		protected void realRun() {
1691		try {
1692	<	Thread.sleep(MEDIUM_DELAY_MS);
1692	>	delay(MEDIUM_DELAY_MS);
1693		} catch (InterruptedException ok) {}
1694		}
1695		}
#	Line 860 | Line 1697 | public class JSR166TestCase extends Test
1697		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1698		protected void realRun() {
1699		try {
1700	<	Thread.sleep(LONG_DELAY_MS);
1700	>	delay(LONG_DELAY_MS);
1701		} catch (InterruptedException ok) {}
1702		}
1703		}
#	Line 884 | Line 1721 | public class JSR166TestCase extends Test
1721		public boolean isDone() { return done; }
1722		public void run() {
1723		try {
1724	<	Thread.sleep(timeoutMillis);
1724	>	delay(timeoutMillis);
1725		done = true;
1726		} catch (InterruptedException ok) {}
1727		}
#	Line 895 | Line 1732 | public class JSR166TestCase extends Test
1732		public volatile boolean done = false;
1733		public void run() {
1734		try {
1735	<	Thread.sleep(SHORT_DELAY_MS);
1735	>	delay(SHORT_DELAY_MS);
1736		done = true;
1737		} catch (InterruptedException ok) {}
1738		}
#	Line 905 | Line 1742 | public class JSR166TestCase extends Test
1742		public volatile boolean done = false;
1743		public void run() {
1744		try {
1745	<	Thread.sleep(SMALL_DELAY_MS);
1745	>	delay(SMALL_DELAY_MS);
1746		done = true;
1747		} catch (InterruptedException ok) {}
1748		}
#	Line 915 | Line 1752 | public class JSR166TestCase extends Test
1752		public volatile boolean done = false;
1753		public void run() {
1754		try {
1755	<	Thread.sleep(MEDIUM_DELAY_MS);
1755	>	delay(MEDIUM_DELAY_MS);
1756		done = true;
1757		} catch (InterruptedException ok) {}
1758		}
#	Line 925 | Line 1762 | public class JSR166TestCase extends Test
1762		public volatile boolean done = false;
1763		public void run() {
1764		try {
1765	<	Thread.sleep(LONG_DELAY_MS);
1765	>	delay(LONG_DELAY_MS);
1766		done = true;
1767		} catch (InterruptedException ok) {}
1768		}
#	Line 942 | Line 1779 | public class JSR166TestCase extends Test
1779		public volatile boolean done = false;
1780		public Object call() {
1781		try {
1782	<	Thread.sleep(SMALL_DELAY_MS);
1782	>	delay(SMALL_DELAY_MS);
1783		done = true;
1784		} catch (InterruptedException ok) {}
1785		return Boolean.TRUE;
#	Line 955 | Line 1792 | public class JSR166TestCase extends Test
1792		public abstract class CheckedRecursiveAction extends RecursiveAction {
1793		protected abstract void realCompute() throws Throwable;
1794
1795	<	public final void compute() {
1795	>	@Override protected final void compute() {
1796		try {
1797		realCompute();
1798	<	} catch (Throwable t) {
1799	<	threadUnexpectedException(t);
1798	>	} catch (Throwable fail) {
1799	>	threadUnexpectedException(fail);
1800		}
1801		}
1802		}
#	Line 970 | Line 1807 | public class JSR166TestCase extends Test
1807		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1808		protected abstract T realCompute() throws Throwable;
1809
1810	<	public final T compute() {
1810	>	@Override protected final T compute() {
1811		try {
1812		return realCompute();
1813	<	} catch (Throwable t) {
1814	<	threadUnexpectedException(t);
1813	>	} catch (Throwable fail) {
1814	>	threadUnexpectedException(fail);
1815		return null;
1816		}
1817		}
#	Line 989 | Line 1826 | public class JSR166TestCase extends Test
1826		}
1827
1828		/**
1829	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1830	<	* of throwing checked exceptions.
1829	>	* A CyclicBarrier that uses timed await and fails with
1830	>	* AssertionFailedErrors instead of throwing checked exceptions.
1831		*/
1832	<	public class CheckedBarrier extends CyclicBarrier {
1832	>	public static class CheckedBarrier extends CyclicBarrier {
1833		public CheckedBarrier(int parties) { super(parties); }
1834
1835		public int await() {
1836		try {
1837	<	return super.await();
1838	<	} catch (Exception e) {
1837	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1838	>	} catch (TimeoutException timedOut) {
1839	>	throw new AssertionFailedError("timed out");
1840	>	} catch (Exception fail) {
1841		AssertionFailedError afe =
1842	<	new AssertionFailedError("Unexpected exception: " + e);
1843	<	afe.initCause(e);
1842	>	new AssertionFailedError("Unexpected exception: " + fail);
1843	>	afe.initCause(fail);
1844		throw afe;
1845		}
1846		}
1847		}
1848
1849	+	void checkEmpty(BlockingQueue q) {
1850	+	try {
1851	+	assertTrue(q.isEmpty());
1852	+	assertEquals(0, q.size());
1853	+	assertNull(q.peek());
1854	+	assertNull(q.poll());
1855	+	assertNull(q.poll(0, MILLISECONDS));
1856	+	assertEquals(q.toString(), "[]");
1857	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1858	+	assertFalse(q.iterator().hasNext());
1859	+	try {
1860	+	q.element();
1861	+	shouldThrow();
1862	+	} catch (NoSuchElementException success) {}
1863	+	try {
1864	+	q.iterator().next();
1865	+	shouldThrow();
1866	+	} catch (NoSuchElementException success) {}
1867	+	try {
1868	+	q.remove();
1869	+	shouldThrow();
1870	+	} catch (NoSuchElementException success) {}
1871	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1872	+	}
1873	+
1874	+	void assertSerialEquals(Object x, Object y) {
1875	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1876	+	}
1877	+
1878	+	void assertNotSerialEquals(Object x, Object y) {
1879	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1880	+	}
1881	+
1882	+	byte[] serialBytes(Object o) {
1883	+	try {
1884	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1885	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1886	+	oos.writeObject(o);
1887	+	oos.flush();
1888	+	oos.close();
1889	+	return bos.toByteArray();
1890	+	} catch (Throwable fail) {
1891	+	threadUnexpectedException(fail);
1892	+	return new byte[0];
1893	+	}
1894	+	}
1895	+
1896	+	void assertImmutable(final Object o) {
1897	+	if (o instanceof Collection) {
1898	+	assertThrows(
1899	+	UnsupportedOperationException.class,
1900	+	new Runnable() { public void run() {
1901	+	((Collection) o).add(null);}});
1902	+	}
1903	+	}
1904	+
1905	+	@SuppressWarnings("unchecked")
1906	+	<T> T serialClone(T o) {
1907	+	try {
1908	+	ObjectInputStream ois = new ObjectInputStream
1909	+	(new ByteArrayInputStream(serialBytes(o)));
1910	+	T clone = (T) ois.readObject();
1911	+	if (o == clone) assertImmutable(o);
1912	+	assertSame(o.getClass(), clone.getClass());
1913	+	return clone;
1914	+	} catch (Throwable fail) {
1915	+	threadUnexpectedException(fail);
1916	+	return null;
1917	+	}
1918	+	}
1919	+
1920	+	/**
1921	+	* A version of serialClone that leaves error handling (for
1922	+	* e.g. NotSerializableException) up to the caller.
1923	+	*/
1924	+	@SuppressWarnings("unchecked")
1925	+	<T> T serialClonePossiblyFailing(T o)
1926	+	throws ReflectiveOperationException, java.io.IOException {
1927	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1928	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1929	+	oos.writeObject(o);
1930	+	oos.flush();
1931	+	oos.close();
1932	+	ObjectInputStream ois = new ObjectInputStream
1933	+	(new ByteArrayInputStream(bos.toByteArray()));
1934	+	T clone = (T) ois.readObject();
1935	+	if (o == clone) assertImmutable(o);
1936	+	assertSame(o.getClass(), clone.getClass());
1937	+	return clone;
1938	+	}
1939	+
1940	+	/**
1941	+	* If o implements Cloneable and has a public clone method,
1942	+	* returns a clone of o, else null.
1943	+	*/
1944	+	@SuppressWarnings("unchecked")
1945	+	<T> T cloneableClone(T o) {
1946	+	if (!(o instanceof Cloneable)) return null;
1947	+	final T clone;
1948	+	try {
1949	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1950	+	} catch (NoSuchMethodException ok) {
1951	+	return null;
1952	+	} catch (ReflectiveOperationException unexpected) {
1953	+	throw new Error(unexpected);
1954	+	}
1955	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1956	+	assertSame(o.getClass(), clone.getClass());
1957	+	return clone;
1958	+	}
1959	+
1960	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1961	+	Runnable... throwingActions) {
1962	+	for (Runnable throwingAction : throwingActions) {
1963	+	boolean threw = false;
1964	+	try { throwingAction.run(); }
1965	+	catch (Throwable t) {
1966	+	threw = true;
1967	+	if (!expectedExceptionClass.isInstance(t)) {
1968	+	AssertionFailedError afe =
1969	+	new AssertionFailedError
1970	+	("Expected " + expectedExceptionClass.getName() +
1971	+	", got " + t.getClass().getName());
1972	+	afe.initCause(t);
1973	+	threadUnexpectedException(afe);
1974	+	}
1975	+	}
1976	+	if (!threw)
1977	+	shouldThrow(expectedExceptionClass.getName());
1978	+	}
1979	+	}
1980	+
1981	+	public void assertIteratorExhausted(Iterator<?> it) {
1982	+	try {
1983	+	it.next();
1984	+	shouldThrow();
1985	+	} catch (NoSuchElementException success) {}
1986	+	assertFalse(it.hasNext());
1987	+	}
1988	+
1989	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1990	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1991	+	}
1992	+
1993	+	public Runnable runnableThrowing(final RuntimeException ex) {
1994	+	return new Runnable() { public void run() { throw ex; }};
1995	+	}
1996	+
1997	+	/** A reusable thread pool to be shared by tests. */
1998	+	static final ExecutorService cachedThreadPool =
1999	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
2000	+	1000L, MILLISECONDS,
2001	+	new SynchronousQueue<Runnable>());
2002	+
2003	+	static <T> void shuffle(T[] array) {
2004	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
2005	+	}
2006		}

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