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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.70 by jsr166, Sun Nov 21 19:04:45 2010 UTC vs.
Revision 1.223 by jsr166, Sat May 13 19:13:09 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
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	<	import junit.framework.*;
11	<	import java.util.PropertyPermission;
12	<	import java.util.concurrent.*;
13	<	import java.util.concurrent.atomic.AtomicReference;
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;
48	+	import java.io.ByteArrayOutputStream;
49	+	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 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.Pattern;
95	+
96	+	import junit.framework.AssertionFailedError;
97	+	import junit.framework.Test;
98	+	import junit.framework.TestCase;
99	+	import junit.framework.TestResult;
100	+	import junit.framework.TestSuite;
101
102		/**
103		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 30 | Line 109 | import java.security.SecurityPermission;
109		*
110		* <ol>
111		*
112	<	* <li> All assertions in code running in generated threads must use
112	>	* <li>All assertions in code running in generated threads must use
113		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
114		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
115		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
116		* particularly recommended) for other code to use these forms too.
117		* Only the most typically used JUnit assertion methods are defined
118	<	* this way, but enough to live with.</li>
118	>	* this way, but enough to live with.
119		*
120	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
120	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
121		* to invoke {@code super.setUp} and {@code super.tearDown} within
122		* them. These methods are used to clear and check for thread
123	<	* assertion failures.</li>
123	>	* assertion failures.
124		*
125		* <li>All delays and timeouts must use one of the constants {@code
126		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 52 | Line 131 | import java.security.SecurityPermission;
131		* is always discriminable as larger than SHORT and smaller than
132		* MEDIUM.  And so on. These constants are set to conservative values,
133		* but even so, if there is ever any doubt, they can all be increased
134	<	* in one spot to rerun tests on slower platforms.</li>
134	>	* in one spot to rerun tests on slower platforms.
135		*
136	<	* <li> All threads generated must be joined inside each test case
136	>	* <li>All threads generated must be joined inside each test case
137		* method (or {@code fail} to do so) before returning from the
138		* method. The {@code joinPool} method can be used to do this when
139	<	* using Executors.</li>
139	>	* using Executors.
140		*
141		* </ol>
142		*
143	<	* <p> <b>Other notes</b>
143	>	* <p><b>Other notes</b>
144		* <ul>
145		*
146	<	* <li> Usually, there is one testcase method per JSR166 method
146	>	* <li>Usually, there is one testcase method per JSR166 method
147		* covering "normal" operation, and then as many exception-testing
148		* methods as there are exceptions the method can throw. Sometimes
149		* there are multiple tests per JSR166 method when the different
150		* "normal" behaviors differ significantly. And sometimes testcases
151	<	* cover multiple methods when they cannot be tested in
73	<	* isolation.</li>
151	>	* cover multiple methods when they cannot be tested in isolation.
152		*
153	<	* <li> The documentation style for testcases is to provide as javadoc
153	>	* <li>The documentation style for testcases is to provide as javadoc
154		* a simple sentence or two describing the property that the testcase
155		* method purports to test. The javadocs do not say anything about how
156	<	* the property is tested. To find out, read the code.</li>
156	>	* the property is tested. To find out, read the code.
157		*
158	<	* <li> These tests are "conformance tests", and do not attempt to
158	>	* <li>These tests are "conformance tests", and do not attempt to
159		* test throughput, latency, scalability or other performance factors
160		* (see the separate "jtreg" tests for a set intended to check these
161		* for the most central aspects of functionality.) So, most tests use
162		* the smallest sensible numbers of threads, collection sizes, etc
163	<	* needed to check basic conformance.</li>
163	>	* needed to check basic conformance.
164		*
165		* <li>The test classes currently do not declare inclusion in
166		* any particular package to simplify things for people integrating
167	<	* them in TCK test suites.</li>
167	>	* them in TCK test suites.
168		*
169	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
170	<	* runs all JSR166 unit tests.</li>
169	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
170	>	* runs all JSR166 unit tests.
171		*
172		* </ul>
173		*/
#	Line 101 | Line 179 | public class JSR166TestCase extends Test
179		Boolean.getBoolean("jsr166.expensiveTests");
180
181		/**
182	+	* If true, also run tests that are not part of the official tck
183	+	* because they test unspecified implementation details.
184	+	*/
185	+	protected static final boolean testImplementationDetails =
186	+	Boolean.getBoolean("jsr166.testImplementationDetails");
187	+
188	+	/**
189		* If true, report on stdout all "slow" tests, that is, ones that
190		* take more than profileThreshold milliseconds to execute.
191		*/
#	Line 114 | Line 199 | public class JSR166TestCase extends Test
199		private static final long profileThreshold =
200		Long.getLong("jsr166.profileThreshold", 100);
201
202	+	/**
203	+	* The number of repetitions per test (for tickling rare bugs).
204	+	*/
205	+	private static final int runsPerTest =
206	+	Integer.getInteger("jsr166.runsPerTest", 1);
207	+
208	+	/**
209	+	* The number of repetitions of the test suite (for finding leaks?).
210	+	*/
211	+	private static final int suiteRuns =
212	+	Integer.getInteger("jsr166.suiteRuns", 1);
213	+
214	+	/**
215	+	* Returns the value of the system property, or NaN if not defined.
216	+	*/
217	+	private static float systemPropertyValue(String name) {
218	+	String floatString = System.getProperty(name);
219	+	if (floatString == null)
220	+	return Float.NaN;
221	+	try {
222	+	return Float.parseFloat(floatString);
223	+	} catch (NumberFormatException ex) {
224	+	throw new IllegalArgumentException(
225	+	String.format("Bad float value in system property %s=%s",
226	+	name, floatString));
227	+	}
228	+	}
229	+
230	+	/**
231	+	* The scaling factor to apply to standard delays used in tests.
232	+	* May be initialized from any of:
233	+	* - the "jsr166.delay.factor" system property
234	+	* - the "test.timeout.factor" system property (as used by jtreg)
235	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
236	+	* - hard-coded fuzz factor when using a known slowpoke VM
237	+	*/
238	+	private static final float delayFactor = delayFactor();
239	+
240	+	private static float delayFactor() {
241	+	float x;
242	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
243	+	return x;
244	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
245	+	return x;
246	+	String prop = System.getProperty("java.vm.version");
247	+	if (prop != null && prop.matches(".*debug.*"))
248	+	return 4.0f; // How much slower is fastdebug than product?!
249	+	return 1.0f;
250	+	}
251	+
252	+	public JSR166TestCase() { super(); }
253	+	public JSR166TestCase(String name) { super(name); }
254	+
255	+	/**
256	+	* A filter for tests to run, matching strings of the form
257	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
258	+	* Usefully combined with jsr166.runsPerTest.
259	+	*/
260	+	private static final Pattern methodFilter = methodFilter();
261	+
262	+	private static Pattern methodFilter() {
263	+	String regex = System.getProperty("jsr166.methodFilter");
264	+	return (regex == null) ? null : Pattern.compile(regex);
265	+	}
266	+
267	+	// Instrumentation to debug very rare, but very annoying hung test runs.
268	+	static volatile TestCase currentTestCase;
269	+	// static volatile int currentRun = 0;
270	+	static {
271	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
272	+	// Avoid spurious reports with enormous runsPerTest.
273	+	// A single test case run should never take more than 1 second.
274	+	// But let's cap it at the high end too ...
275	+	final int timeoutMinutes =
276	+	Math.min(15, Math.max(runsPerTest / 60, 1));
277	+	for (TestCase lastTestCase = currentTestCase;;) {
278	+	try { MINUTES.sleep(timeoutMinutes); }
279	+	catch (InterruptedException unexpected) { break; }
280	+	if (lastTestCase == currentTestCase) {
281	+	System.err.printf(
282	+	"Looks like we're stuck running test: %s%n",
283	+	lastTestCase);
284	+	//                     System.err.printf(
285	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
286	+	//                         lastTestCase, currentRun, runsPerTest);
287	+	//                     System.err.println("availableProcessors=" +
288	+	//                         Runtime.getRuntime().availableProcessors());
289	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
290	+	dumpTestThreads();
291	+	// one stack dump is probably enough; more would be spam
292	+	break;
293	+	}
294	+	lastTestCase = currentTestCase;
295	+	}}};
296	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
297	+	thread.setDaemon(true);
298	+	thread.start();
299	+	}
300	+
301	+	//     public static String cpuModel() {
302	+	//         try {
303	+	//             java.util.regex.Matcher matcher
304	+	//               = Pattern.compile("model name\\s*: (.*)")
305	+	//                 .matcher(new String(
306	+	//                     java.nio.file.Files.readAllBytes(
307	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
308	+	//             matcher.find();
309	+	//             return matcher.group(1);
310	+	//         } catch (Exception ex) { return null; }
311	+	//     }
312	+
313	+	public void runBare() throws Throwable {
314	+	currentTestCase = this;
315	+	if (methodFilter == null
316	+	|| methodFilter.matcher(toString()).find())
317	+	super.runBare();
318	+	}
319	+
320		protected void runTest() throws Throwable {
321	<	if (profileTests)
322	<	runTestProfiled();
323	<	else
324	<	super.runTest();
321	>	for (int i = 0; i < runsPerTest; i++) {
322	>	// currentRun = i;
323	>	if (profileTests)
324	>	runTestProfiled();
325	>	else
326	>	super.runTest();
327	>	}
328		}
329
330		protected void runTestProfiled() throws Throwable {
331	<	long t0 = System.nanoTime();
332	<	try {
331	>	for (int i = 0; i < 2; i++) {
332	>	long startTime = System.nanoTime();
333		super.runTest();
334	<	} finally {
335	<	long elapsedMillis =
336	<	(System.nanoTime() - t0) / (1000L * 1000L);
337	<	if (elapsedMillis >= profileThreshold)
334	>	long elapsedMillis = millisElapsedSince(startTime);
335	>	if (elapsedMillis < profileThreshold)
336	>	break;
337	>	// Never report first run of any test; treat it as a
338	>	// warmup run, notably to trigger all needed classloading,
339	>	if (i > 0)
340		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
341		}
342		}
343
344		/**
345	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
345	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
346		*/
347		public static void main(String[] args) {
348	+	main(suite(), args);
349	+	}
350	+
351	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
352	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
353	+	long runTime;
354	+	public void startTest(Test test) {}
355	+	protected void printHeader(long runTime) {
356	+	this.runTime = runTime; // defer printing for later
357	+	}
358	+	protected void printFooter(TestResult result) {
359	+	if (result.wasSuccessful()) {
360	+	getWriter().println("OK (" + result.runCount() + " tests)"
361	+	+ "  Time: " + elapsedTimeAsString(runTime));
362	+	} else {
363	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
364	+	super.printFooter(result);
365	+	}
366	+	}
367	+	}
368	+
369	+	/**
370	+	* Returns a TestRunner that doesn't bother with unnecessary
371	+	* fluff, like printing a "." for each test case.
372	+	*/
373	+	static junit.textui.TestRunner newPithyTestRunner() {
374	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
375	+	runner.setPrinter(new PithyResultPrinter(System.out));
376	+	return runner;
377	+	}
378	+
379	+	/**
380	+	* Runs all unit tests in the given test suite.
381	+	* Actual behavior influenced by jsr166.* system properties.
382	+	*/
383	+	static void main(Test suite, String[] args) {
384		if (useSecurityManager) {
385		System.err.println("Setting a permissive security manager");
386		Policy.setPolicy(permissivePolicy());
387		System.setSecurityManager(new SecurityManager());
388		}
389	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
390	<
391	<	Test s = suite();
392	<	for (int i = 0; i < iters; ++i) {
149	<	junit.textui.TestRunner.run(s);
389	>	for (int i = 0; i < suiteRuns; i++) {
390	>	TestResult result = newPithyTestRunner().doRun(suite);
391	>	if (!result.wasSuccessful())
392	>	System.exit(1);
393		System.gc();
394		System.runFinalization();
395		}
153	–	System.exit(0);
396		}
397
398		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 166 | Line 408 | public class JSR166TestCase extends Test
408		return suite;
409		}
410
411	+	public static void addNamedTestClasses(TestSuite suite,
412	+	String... testClassNames) {
413	+	for (String testClassName : testClassNames) {
414	+	try {
415	+	Class<?> testClass = Class.forName(testClassName);
416	+	Method m = testClass.getDeclaredMethod("suite",
417	+	new Class<?>[0]);
418	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
419	+	} catch (Exception e) {
420	+	throw new Error("Missing test class", e);
421	+	}
422	+	}
423	+	}
424	+
425	+	public static final double JAVA_CLASS_VERSION;
426	+	public static final String JAVA_SPECIFICATION_VERSION;
427	+	static {
428	+	try {
429	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
430	+	new java.security.PrivilegedAction<Double>() {
431	+	public Double run() {
432	+	return Double.valueOf(System.getProperty("java.class.version"));}});
433	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
434	+	new java.security.PrivilegedAction<String>() {
435	+	public String run() {
436	+	return System.getProperty("java.specification.version");}});
437	+	} catch (Throwable t) {
438	+	throw new Error(t);
439	+	}
440	+	}
441	+
442	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
443	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
444	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
445	+	public static boolean atLeastJava9() {
446	+	return JAVA_CLASS_VERSION >= 53.0
447	+	// As of 2015-09, java9 still uses 52.0 class file version
448	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
449	+	}
450	+	public static boolean atLeastJava10() {
451	+	return JAVA_CLASS_VERSION >= 54.0
452	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
453	+	}
454	+
455		/**
456		* Collects all JSR166 unit tests as one suite.
457		*/
458		public static Test suite() {
459	<	return newTestSuite(
459	>	// Java7+ test classes
460	>	TestSuite suite = newTestSuite(
461		ForkJoinPoolTest.suite(),
462		ForkJoinTaskTest.suite(),
463		RecursiveActionTest.suite(),
#	Line 184 | Line 471 | public class JSR166TestCase extends Test
471		AbstractQueuedLongSynchronizerTest.suite(),
472		ArrayBlockingQueueTest.suite(),
473		ArrayDequeTest.suite(),
474	+	ArrayListTest.suite(),
475		AtomicBooleanTest.suite(),
476		AtomicIntegerArrayTest.suite(),
477		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 206 | Line 494 | public class JSR166TestCase extends Test
494		CopyOnWriteArrayListTest.suite(),
495		CopyOnWriteArraySetTest.suite(),
496		CountDownLatchTest.suite(),
497	+	CountedCompleterTest.suite(),
498		CyclicBarrierTest.suite(),
499		DelayQueueTest.suite(),
500		EntryTest.suite(),
#	Line 234 | Line 523 | public class JSR166TestCase extends Test
523		TreeMapTest.suite(),
524		TreeSetTest.suite(),
525		TreeSubMapTest.suite(),
526	<	TreeSubSetTest.suite());
526	>	TreeSubSetTest.suite(),
527	>	VectorTest.suite());
528	>
529	>	// Java8+ test classes
530	>	if (atLeastJava8()) {
531	>	String[] java8TestClassNames = {
532	>	"ArrayDeque8Test",
533	>	"Atomic8Test",
534	>	"CompletableFutureTest",
535	>	"ConcurrentHashMap8Test",
536	>	"CountedCompleter8Test",
537	>	"DoubleAccumulatorTest",
538	>	"DoubleAdderTest",
539	>	"ForkJoinPool8Test",
540	>	"ForkJoinTask8Test",
541	>	"LinkedBlockingDeque8Test",
542	>	"LinkedBlockingQueue8Test",
543	>	"LongAccumulatorTest",
544	>	"LongAdderTest",
545	>	"SplittableRandomTest",
546	>	"StampedLockTest",
547	>	"SubmissionPublisherTest",
548	>	"ThreadLocalRandom8Test",
549	>	"TimeUnit8Test",
550	>	};
551	>	addNamedTestClasses(suite, java8TestClassNames);
552	>	}
553	>
554	>	// Java9+ test classes
555	>	if (atLeastJava9()) {
556	>	String[] java9TestClassNames = {
557	>	"AtomicBoolean9Test",
558	>	"AtomicInteger9Test",
559	>	"AtomicIntegerArray9Test",
560	>	"AtomicLong9Test",
561	>	"AtomicLongArray9Test",
562	>	"AtomicReference9Test",
563	>	"AtomicReferenceArray9Test",
564	>	"ExecutorCompletionService9Test",
565	>	"ForkJoinPool9Test",
566	>	};
567	>	addNamedTestClasses(suite, java9TestClassNames);
568	>	}
569	>
570	>	return suite;
571	>	}
572	>
573	>	/** Returns list of junit-style test method names in given class. */
574	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
575	>	Method[] methods = testClass.getDeclaredMethods();
576	>	ArrayList<String> names = new ArrayList<>(methods.length);
577	>	for (Method method : methods) {
578	>	if (method.getName().startsWith("test")
579	>	&& Modifier.isPublic(method.getModifiers())
580	>	// method.getParameterCount() requires jdk8+
581	>	&& method.getParameterTypes().length == 0) {
582	>	names.add(method.getName());
583	>	}
584	>	}
585	>	return names;
586	>	}
587	>
588	>	/**
589	>	* Returns junit-style testSuite for the given test class, but
590	>	* parameterized by passing extra data to each test.
591	>	*/
592	>	public static <ExtraData> Test parameterizedTestSuite
593	>	(Class<? extends JSR166TestCase> testClass,
594	>	Class<ExtraData> dataClass,
595	>	ExtraData data) {
596	>	try {
597	>	TestSuite suite = new TestSuite();
598	>	Constructor c =
599	>	testClass.getDeclaredConstructor(dataClass, String.class);
600	>	for (String methodName : testMethodNames(testClass))
601	>	suite.addTest((Test) c.newInstance(data, methodName));
602	>	return suite;
603	>	} catch (Exception e) {
604	>	throw new Error(e);
605	>	}
606	>	}
607	>
608	>	/**
609	>	* Returns junit-style testSuite for the jdk8 extension of the
610	>	* given test class, but parameterized by passing extra data to
611	>	* each test.  Uses reflection to allow compilation in jdk7.
612	>	*/
613	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
614	>	(Class<? extends JSR166TestCase> testClass,
615	>	Class<ExtraData> dataClass,
616	>	ExtraData data) {
617	>	if (atLeastJava8()) {
618	>	String name = testClass.getName();
619	>	String name8 = name.replaceAll("Test$", "8Test");
620	>	if (name.equals(name8)) throw new Error(name);
621	>	try {
622	>	return (Test)
623	>	Class.forName(name8)
624	>	.getMethod("testSuite", new Class[] { dataClass })
625	>	.invoke(null, data);
626	>	} catch (Exception e) {
627	>	throw new Error(e);
628	>	}
629	>	} else {
630	>	return new TestSuite();
631	>	}
632		}
633
634	+	// Delays for timing-dependent tests, in milliseconds.
635
636		public static long SHORT_DELAY_MS;
637		public static long SMALL_DELAY_MS;
638		public static long MEDIUM_DELAY_MS;
639		public static long LONG_DELAY_MS;
640
246	–
641		/**
642	<	* Returns the shortest timed delay. This could
643	<	* be reimplemented to use for example a Property.
642	>	* Returns the shortest timed delay. This can be scaled up for
643	>	* slow machines using the jsr166.delay.factor system property,
644	>	* or via jtreg's -timeoutFactor: flag.
645	>	* http://openjdk.java.net/jtreg/command-help.html
646		*/
647		protected long getShortDelay() {
648	<	return 50;
648	>	return (long) (50 * delayFactor);
649		}
650
255	–
651		/**
652		* Sets delays as multiples of SHORT_DELAY.
653		*/
#	Line 260 | Line 655 | public class JSR166TestCase extends Test
655		SHORT_DELAY_MS = getShortDelay();
656		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
657		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
658	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
658	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
659	>	}
660	>
661	>	private static final long TIMEOUT_DELAY_MS
662	>	= (long) (12.0 * Math.cbrt(delayFactor));
663	>
664	>	/**
665	>	* Returns a timeout in milliseconds to be used in tests that verify
666	>	* that operations block or time out.  We want this to be longer
667	>	* than the OS scheduling quantum, but not too long, so don't scale
668	>	* linearly with delayFactor; we use "crazy" cube root instead.
669	>	*/
670	>	static long timeoutMillis() {
671	>	return TIMEOUT_DELAY_MS;
672	>	}
673	>
674	>	/**
675	>	* Returns a new Date instance representing a time at least
676	>	* delayMillis milliseconds in the future.
677	>	*/
678	>	Date delayedDate(long delayMillis) {
679	>	// Add 1 because currentTimeMillis is known to round into the past.
680	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
681		}
682
683		/**
684		* The first exception encountered if any threadAssertXXX method fails.
685		*/
686		private final AtomicReference<Throwable> threadFailure
687	<	= new AtomicReference<Throwable>(null);
687	>	= new AtomicReference<>(null);
688
689		/**
690		* Records an exception so that it can be rethrown later in the test
#	Line 276 | Line 693 | public class JSR166TestCase extends Test
693		* the same test have no effect.
694		*/
695		public void threadRecordFailure(Throwable t) {
696	+	System.err.println(t);
697	+	dumpTestThreads();
698		threadFailure.compareAndSet(null, t);
699		}
700
#	Line 283 | Line 702 | public class JSR166TestCase extends Test
702		setDelays();
703		}
704
705	+	void tearDownFail(String format, Object... args) {
706	+	String msg = toString() + ": " + String.format(format, args);
707	+	System.err.println(msg);
708	+	dumpTestThreads();
709	+	throw new AssertionFailedError(msg);
710	+	}
711	+
712		/**
713	+	* Extra checks that get done for all test cases.
714	+	*
715		* Triggers test case failure if any thread assertions have failed,
716		* by rethrowing, in the test harness thread, any exception recorded
717		* earlier by threadRecordFailure.
718	+	*
719	+	* Triggers test case failure if interrupt status is set in the main thread.
720		*/
721		public void tearDown() throws Exception {
722		Throwable t = threadFailure.getAndSet(null);
#	Line 304 | Line 734 | public class JSR166TestCase extends Test
734		throw afe;
735		}
736		}
737	+
738	+	if (Thread.interrupted())
739	+	tearDownFail("interrupt status set in main thread");
740	+
741	+	checkForkJoinPoolThreadLeaks();
742	+	}
743	+
744	+	/**
745	+	* Finds missing PoolCleaners
746	+	*/
747	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
748	+	Thread[] survivors = new Thread[7];
749	+	int count = Thread.enumerate(survivors);
750	+	for (int i = 0; i < count; i++) {
751	+	Thread thread = survivors[i];
752	+	String name = thread.getName();
753	+	if (name.startsWith("ForkJoinPool-")) {
754	+	// give thread some time to terminate
755	+	thread.join(LONG_DELAY_MS);
756	+	if (thread.isAlive())
757	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
758	+	thread);
759	+	}
760	+	}
761	+
762	+	if (!ForkJoinPool.commonPool()
763	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
764	+	tearDownFail("ForkJoin common pool thread stuck");
765		}
766
767		/**
#	Line 316 | Line 774 | public class JSR166TestCase extends Test
774		fail(reason);
775		} catch (AssertionFailedError t) {
776		threadRecordFailure(t);
777	<	fail(reason);
777	>	throw t;
778		}
779		}
780
#	Line 384 | Line 842 | public class JSR166TestCase extends Test
842		public void threadAssertEquals(Object x, Object y) {
843		try {
844		assertEquals(x, y);
845	<	} catch (AssertionFailedError t) {
846	<	threadRecordFailure(t);
847	<	throw t;
848	<	} catch (Throwable t) {
849	<	threadUnexpectedException(t);
845	>	} catch (AssertionFailedError fail) {
846	>	threadRecordFailure(fail);
847	>	throw fail;
848	>	} catch (Throwable fail) {
849	>	threadUnexpectedException(fail);
850		}
851		}
852
#	Line 400 | Line 858 | public class JSR166TestCase extends Test
858		public void threadAssertSame(Object x, Object y) {
859		try {
860		assertSame(x, y);
861	<	} catch (AssertionFailedError t) {
862	<	threadRecordFailure(t);
863	<	throw t;
861	>	} catch (AssertionFailedError fail) {
862	>	threadRecordFailure(fail);
863	>	throw fail;
864		}
865		}
866
#	Line 435 | Line 893 | public class JSR166TestCase extends Test
893		else {
894		AssertionFailedError afe =
895		new AssertionFailedError("unexpected exception: " + t);
896	<	t.initCause(t);
896	>	afe.initCause(t);
897		throw afe;
898		}
899		}
900
901		/**
902	+	* Delays, via Thread.sleep, for the given millisecond delay, but
903	+	* if the sleep is shorter than specified, may re-sleep or yield
904	+	* until time elapses.  Ensures that the given time, as measured
905	+	* by System.nanoTime(), has elapsed.
906	+	*/
907	+	static void delay(long millis) throws InterruptedException {
908	+	long nanos = millis * (1000 * 1000);
909	+	final long wakeupTime = System.nanoTime() + nanos;
910	+	do {
911	+	if (millis > 0L)
912	+	Thread.sleep(millis);
913	+	else // too short to sleep
914	+	Thread.yield();
915	+	nanos = wakeupTime - System.nanoTime();
916	+	millis = nanos / (1000 * 1000);
917	+	} while (nanos >= 0L);
918	+	}
919	+
920	+	/**
921	+	* Allows use of try-with-resources with per-test thread pools.
922	+	*/
923	+	class PoolCleaner implements AutoCloseable {
924	+	private final ExecutorService pool;
925	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
926	+	public void close() { joinPool(pool); }
927	+	}
928	+
929	+	/**
930	+	* An extension of PoolCleaner that has an action to release the pool.
931	+	*/
932	+	class PoolCleanerWithReleaser extends PoolCleaner {
933	+	private final Runnable releaser;
934	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
935	+	super(pool);
936	+	this.releaser = releaser;
937	+	}
938	+	public void close() {
939	+	try {
940	+	releaser.run();
941	+	} finally {
942	+	super.close();
943	+	}
944	+	}
945	+	}
946	+
947	+	PoolCleaner cleaner(ExecutorService pool) {
948	+	return new PoolCleaner(pool);
949	+	}
950	+
951	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
952	+	return new PoolCleanerWithReleaser(pool, releaser);
953	+	}
954	+
955	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
956	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
957	+	}
958	+
959	+	Runnable releaser(final CountDownLatch latch) {
960	+	return new Runnable() { public void run() {
961	+	do { latch.countDown(); }
962	+	while (latch.getCount() > 0);
963	+	}};
964	+	}
965	+
966	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
967	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
968	+	}
969	+
970	+	Runnable releaser(final AtomicBoolean flag) {
971	+	return new Runnable() { public void run() { flag.set(true); }};
972	+	}
973	+
974	+	/**
975		* Waits out termination of a thread pool or fails doing so.
976		*/
977	<	public void joinPool(ExecutorService exec) {
977	>	void joinPool(ExecutorService pool) {
978		try {
979	<	exec.shutdown();
980	<	assertTrue("ExecutorService did not terminate in a timely manner",
981	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
979	>	pool.shutdown();
980	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
981	>	try {
982	>	threadFail("ExecutorService " + pool +
983	>	" did not terminate in a timely manner");
984	>	} finally {
985	>	// last resort, for the benefit of subsequent tests
986	>	pool.shutdownNow();
987	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
988	>	}
989	>	}
990		} catch (SecurityException ok) {
991		// Allowed in case test doesn't have privs
992	<	} catch (InterruptedException ie) {
993	<	fail("Unexpected InterruptedException");
992	>	} catch (InterruptedException fail) {
993	>	threadFail("Unexpected InterruptedException");
994	>	}
995	>	}
996	>
997	>	/**
998	>	* Like Runnable, but with the freedom to throw anything.
999	>	* junit folks had the same idea:
1000	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1001	>	*/
1002	>	interface Action { public void run() throws Throwable; }
1003	>
1004	>	/**
1005	>	* Runs all the given actions in parallel, failing if any fail.
1006	>	* Useful for running multiple variants of tests that are
1007	>	* necessarily individually slow because they must block.
1008	>	*/
1009	>	void testInParallel(Action ... actions) {
1010	>	ExecutorService pool = Executors.newCachedThreadPool();
1011	>	try (PoolCleaner cleaner = cleaner(pool)) {
1012	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1013	>	for (final Action action : actions)
1014	>	futures.add(pool.submit(new CheckedRunnable() {
1015	>	public void realRun() throws Throwable { action.run();}}));
1016	>	for (Future<?> future : futures)
1017	>	try {
1018	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1019	>	} catch (ExecutionException ex) {
1020	>	threadUnexpectedException(ex.getCause());
1021	>	} catch (Exception ex) {
1022	>	threadUnexpectedException(ex);
1023	>	}
1024	>	}
1025	>	}
1026	>
1027	>	/**
1028	>	* A debugging tool to print stack traces of most threads, as jstack does.
1029	>	* Uninteresting threads are filtered out.
1030	>	*/
1031	>	static void dumpTestThreads() {
1032	>	SecurityManager sm = System.getSecurityManager();
1033	>	if (sm != null) {
1034	>	try {
1035	>	System.setSecurityManager(null);
1036	>	} catch (SecurityException giveUp) {
1037	>	return;
1038	>	}
1039		}
1040	+
1041	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1042	+	System.err.println("------ stacktrace dump start ------");
1043	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1044	+	final String name = info.getThreadName();
1045	+	String lockName;
1046	+	if ("Signal Dispatcher".equals(name))
1047	+	continue;
1048	+	if ("Reference Handler".equals(name)
1049	+	&& (lockName = info.getLockName()) != null
1050	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1051	+	continue;
1052	+	if ("Finalizer".equals(name)
1053	+	&& (lockName = info.getLockName()) != null
1054	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1055	+	continue;
1056	+	if ("checkForWedgedTest".equals(name))
1057	+	continue;
1058	+	System.err.print(info);
1059	+	}
1060	+	System.err.println("------ stacktrace dump end ------");
1061	+
1062	+	if (sm != null) System.setSecurityManager(sm);
1063		}
1064
1065	+	/**
1066	+	* Checks that thread does not terminate within the default
1067	+	* millisecond delay of {@code timeoutMillis()}.
1068	+	*/
1069	+	void assertThreadStaysAlive(Thread thread) {
1070	+	assertThreadStaysAlive(thread, timeoutMillis());
1071	+	}
1072	+
1073	+	/**
1074	+	* Checks that thread does not terminate within the given millisecond delay.
1075	+	*/
1076	+	void assertThreadStaysAlive(Thread thread, long millis) {
1077	+	try {
1078	+	// No need to optimize the failing case via Thread.join.
1079	+	delay(millis);
1080	+	assertTrue(thread.isAlive());
1081	+	} catch (InterruptedException fail) {
1082	+	threadFail("Unexpected InterruptedException");
1083	+	}
1084	+	}
1085	+
1086	+	/**
1087	+	* Checks that the threads do not terminate within the default
1088	+	* millisecond delay of {@code timeoutMillis()}.
1089	+	*/
1090	+	void assertThreadsStayAlive(Thread... threads) {
1091	+	assertThreadsStayAlive(timeoutMillis(), threads);
1092	+	}
1093	+
1094	+	/**
1095	+	* Checks that the threads do not terminate within the given millisecond delay.
1096	+	*/
1097	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1098	+	try {
1099	+	// No need to optimize the failing case via Thread.join.
1100	+	delay(millis);
1101	+	for (Thread thread : threads)
1102	+	assertTrue(thread.isAlive());
1103	+	} catch (InterruptedException fail) {
1104	+	threadFail("Unexpected InterruptedException");
1105	+	}
1106	+	}
1107	+
1108	+	/**
1109	+	* Checks that future.get times out, with the default timeout of
1110	+	* {@code timeoutMillis()}.
1111	+	*/
1112	+	void assertFutureTimesOut(Future future) {
1113	+	assertFutureTimesOut(future, timeoutMillis());
1114	+	}
1115	+
1116	+	/**
1117	+	* Checks that future.get times out, with the given millisecond timeout.
1118	+	*/
1119	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1120	+	long startTime = System.nanoTime();
1121	+	try {
1122	+	future.get(timeoutMillis, MILLISECONDS);
1123	+	shouldThrow();
1124	+	} catch (TimeoutException success) {
1125	+	} catch (Exception fail) {
1126	+	threadUnexpectedException(fail);
1127	+	} finally { future.cancel(true); }
1128	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1129	+	}
1130
1131		/**
1132		* Fails with message "should throw exception".
#	Line 471 | Line 1143 | public class JSR166TestCase extends Test
1143		}
1144
1145		/**
1146	+	* The maximum number of consecutive spurious wakeups we should
1147	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1148	+	*/
1149	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1150	+
1151	+	/**
1152		* The number of elements to place in collections, arrays, etc.
1153		*/
1154		public static final int SIZE = 20;
#	Line 495 | Line 1173 | public class JSR166TestCase extends Test
1173		public static final Integer m6  = new Integer(-6);
1174		public static final Integer m10 = new Integer(-10);
1175
498	–
1176		/**
1177		* Runs Runnable r with a security policy that permits precisely
1178		* the specified permissions.  If there is no current security
#	Line 507 | Line 1184 | public class JSR166TestCase extends Test
1184		SecurityManager sm = System.getSecurityManager();
1185		if (sm == null) {
1186		r.run();
1187	+	}
1188	+	runWithSecurityManagerWithPermissions(r, permissions);
1189	+	}
1190	+
1191	+	/**
1192	+	* Runs Runnable r with a security policy that permits precisely
1193	+	* the specified permissions.  If there is no current security
1194	+	* manager, a temporary one is set for the duration of the
1195	+	* Runnable.  We require that any security manager permit
1196	+	* getPolicy/setPolicy.
1197	+	*/
1198	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1199	+	Permission... permissions) {
1200	+	SecurityManager sm = System.getSecurityManager();
1201	+	if (sm == null) {
1202		Policy savedPolicy = Policy.getPolicy();
1203		try {
1204		Policy.setPolicy(permissivePolicy());
1205		System.setSecurityManager(new SecurityManager());
1206	<	runWithPermissions(r, permissions);
1206	>	runWithSecurityManagerWithPermissions(r, permissions);
1207		} finally {
1208		System.setSecurityManager(null);
1209		Policy.setPolicy(savedPolicy);
#	Line 559 | Line 1251 | public class JSR166TestCase extends Test
1251		return perms.implies(p);
1252		}
1253		public void refresh() {}
1254	+	public String toString() {
1255	+	List<Permission> ps = new ArrayList<>();
1256	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1257	+	ps.add(e.nextElement());
1258	+	return "AdjustablePolicy with permissions " + ps;
1259	+	}
1260		}
1261
1262		/**
#	Line 584 | Line 1282 | public class JSR166TestCase extends Test
1282		* Sleeps until the given time has elapsed.
1283		* Throws AssertionFailedError if interrupted.
1284		*/
1285	<	void sleep(long millis) {
1285	>	static void sleep(long millis) {
1286		try {
1287	<	Thread.sleep(millis);
1288	<	} catch (InterruptedException ie) {
1287	>	delay(millis);
1288	>	} catch (InterruptedException fail) {
1289		AssertionFailedError afe =
1290		new AssertionFailedError("Unexpected InterruptedException");
1291	<	afe.initCause(ie);
1291	>	afe.initCause(fail);
1292		throw afe;
1293		}
1294		}
1295
1296		/**
1297	<	* 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
1297	>	* Spin-waits up to the specified number of milliseconds for the given
1298		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1299		*/
1300		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1301	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
614	<	long t0 = System.nanoTime();
1301	>	long startTime = 0L;
1302		for (;;) {
1303		Thread.State s = thread.getState();
1304		if (s == Thread.State.BLOCKED ||
#	Line 620 | Line 1307 | public class JSR166TestCase extends Test
1307		return;
1308		else if (s == Thread.State.TERMINATED)
1309		fail("Unexpected thread termination");
1310	<	else if (System.nanoTime() - t0 > timeoutNanos) {
1310	>	else if (startTime == 0L)
1311	>	startTime = System.nanoTime();
1312	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1313		threadAssertTrue(thread.isAlive());
1314	<	return;
1314	>	fail("timed out waiting for thread to enter wait state");
1315	>	}
1316	>	Thread.yield();
1317	>	}
1318	>	}
1319	>
1320	>	/**
1321	>	* Spin-waits up to the specified number of milliseconds for the given
1322	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1323	>	* and additionally satisfy the given condition.
1324	>	*/
1325	>	void waitForThreadToEnterWaitState(
1326	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1327	>	long startTime = 0L;
1328	>	for (;;) {
1329	>	Thread.State s = thread.getState();
1330	>	if (s == Thread.State.BLOCKED ||
1331	>	s == Thread.State.WAITING ||
1332	>	s == Thread.State.TIMED_WAITING) {
1333	>	try {
1334	>	if (waitingForGodot.call())
1335	>	return;
1336	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1337	>	}
1338	>	else if (s == Thread.State.TERMINATED)
1339	>	fail("Unexpected thread termination");
1340	>	else if (startTime == 0L)
1341	>	startTime = System.nanoTime();
1342	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1343	>	threadAssertTrue(thread.isAlive());
1344	>	fail("timed out waiting for thread to enter wait state");
1345		}
1346		Thread.yield();
1347		}
1348		}
1349
1350		/**
1351	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1352	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1353	+	*/
1354	+	void waitForThreadToEnterWaitState(Thread thread) {
1355	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1356	+	}
1357	+
1358	+	/**
1359	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1360	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1361	+	* and additionally satisfy the given condition.
1362	+	*/
1363	+	void waitForThreadToEnterWaitState(
1364	+	Thread thread, Callable<Boolean> waitingForGodot) {
1365	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1366	+	}
1367	+
1368	+	/**
1369		* Returns the number of milliseconds since time given by
1370		* startNanoTime, which must have been previously returned from a
1371	<	* call to {@link System.nanoTime()}.
1371	>	* call to {@link System#nanoTime()}.
1372		*/
1373	<	long millisElapsedSince(long startNanoTime) {
1373	>	static long millisElapsedSince(long startNanoTime) {
1374		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1375		}
1376
1377	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1378	+	//         long startTime = System.nanoTime();
1379	+	//         try {
1380	+	//             r.run();
1381	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1382	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1383	+	//             throw new AssertionFailedError("did not return promptly");
1384	+	//     }
1385	+
1386	+	//     void assertTerminatesPromptly(Runnable r) {
1387	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1388	+	//     }
1389	+
1390	+	/**
1391	+	* Checks that timed f.get() returns the expected value, and does not
1392	+	* wait for the timeout to elapse before returning.
1393	+	*/
1394	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1395	+	long startTime = System.nanoTime();
1396	+	try {
1397	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1398	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1399	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1400	+	throw new AssertionFailedError("timed get did not return promptly");
1401	+	}
1402	+
1403	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1404	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1405	+	}
1406	+
1407		/**
1408		* Returns a new started daemon Thread running the given runnable.
1409		*/
#	Line 655 | Line 1422 | public class JSR166TestCase extends Test
1422		void awaitTermination(Thread t, long timeoutMillis) {
1423		try {
1424		t.join(timeoutMillis);
1425	<	} catch (InterruptedException ie) {
1426	<	threadUnexpectedException(ie);
1425	>	} catch (InterruptedException fail) {
1426	>	threadUnexpectedException(fail);
1427		} finally {
1428	<	if (t.isAlive()) {
1428	>	if (t.getState() != Thread.State.TERMINATED) {
1429		t.interrupt();
1430	<	fail("Test timed out");
1430	>	threadFail("timed out waiting for thread to terminate");
1431		}
1432		}
1433		}
1434
1435	+	/**
1436	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1437	+	* terminate (using {@link Thread#join(long)}), else interrupts
1438	+	* the thread (in the hope that it may terminate later) and fails.
1439	+	*/
1440	+	void awaitTermination(Thread t) {
1441	+	awaitTermination(t, LONG_DELAY_MS);
1442	+	}
1443	+
1444		// Some convenient Runnable classes
1445
1446		public abstract class CheckedRunnable implements Runnable {
#	Line 673 | Line 1449 | public class JSR166TestCase extends Test
1449		public final void run() {
1450		try {
1451		realRun();
1452	<	} catch (Throwable t) {
1453	<	threadUnexpectedException(t);
1452	>	} catch (Throwable fail) {
1453	>	threadUnexpectedException(fail);
1454		}
1455		}
1456		}
#	Line 727 | Line 1503 | public class JSR166TestCase extends Test
1503		realRun();
1504		threadShouldThrow("InterruptedException");
1505		} catch (InterruptedException success) {
1506	<	} catch (Throwable t) {
1507	<	threadUnexpectedException(t);
1506	>	threadAssertFalse(Thread.interrupted());
1507	>	} catch (Throwable fail) {
1508	>	threadUnexpectedException(fail);
1509		}
1510		}
1511		}
#	Line 739 | Line 1516 | public class JSR166TestCase extends Test
1516		public final T call() {
1517		try {
1518		return realCall();
1519	<	} catch (Throwable t) {
1520	<	threadUnexpectedException(t);
1519	>	} catch (Throwable fail) {
1520	>	threadUnexpectedException(fail);
1521		return null;
1522		}
1523		}
#	Line 756 | Line 1533 | public class JSR166TestCase extends Test
1533		threadShouldThrow("InterruptedException");
1534		return result;
1535		} catch (InterruptedException success) {
1536	<	} catch (Throwable t) {
1537	<	threadUnexpectedException(t);
1536	>	threadAssertFalse(Thread.interrupted());
1537	>	} catch (Throwable fail) {
1538	>	threadUnexpectedException(fail);
1539		}
1540		return null;
1541		}
#	Line 774 | Line 1552 | public class JSR166TestCase extends Test
1552		public static final String TEST_STRING = "a test string";
1553
1554		public static class StringTask implements Callable<String> {
1555	<	public String call() { return TEST_STRING; }
1555	>	final String value;
1556	>	public StringTask() { this(TEST_STRING); }
1557	>	public StringTask(String value) { this.value = value; }
1558	>	public String call() { return value; }
1559		}
1560
1561		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 787 | Line 1568 | public class JSR166TestCase extends Test
1568		}};
1569		}
1570
1571	+	public Runnable countDowner(final CountDownLatch latch) {
1572	+	return new CheckedRunnable() {
1573	+	public void realRun() throws InterruptedException {
1574	+	latch.countDown();
1575	+	}};
1576	+	}
1577	+
1578	+	class LatchAwaiter extends CheckedRunnable {
1579	+	static final int NEW = 0;
1580	+	static final int RUNNING = 1;
1581	+	static final int DONE = 2;
1582	+	final CountDownLatch latch;
1583	+	int state = NEW;
1584	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1585	+	public void realRun() throws InterruptedException {
1586	+	state = 1;
1587	+	await(latch);
1588	+	state = 2;
1589	+	}
1590	+	}
1591	+
1592	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1593	+	return new LatchAwaiter(latch);
1594	+	}
1595	+
1596	+	public void await(CountDownLatch latch, long timeoutMillis) {
1597	+	try {
1598	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1599	+	fail("timed out waiting for CountDownLatch for "
1600	+	+ (timeoutMillis/1000) + " sec");
1601	+	} catch (Throwable fail) {
1602	+	threadUnexpectedException(fail);
1603	+	}
1604	+	}
1605	+
1606	+	public void await(CountDownLatch latch) {
1607	+	await(latch, LONG_DELAY_MS);
1608	+	}
1609	+
1610	+	public void await(Semaphore semaphore) {
1611	+	try {
1612	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1613	+	fail("timed out waiting for Semaphore for "
1614	+	+ (LONG_DELAY_MS/1000) + " sec");
1615	+	} catch (Throwable fail) {
1616	+	threadUnexpectedException(fail);
1617	+	}
1618	+	}
1619	+
1620	+	//     /**
1621	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1622	+	//      */
1623	+	//     public void await(AtomicBoolean flag) {
1624	+	//         await(flag, LONG_DELAY_MS);
1625	+	//     }
1626	+
1627	+	//     /**
1628	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1629	+	//      */
1630	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1631	+	//         long startTime = System.nanoTime();
1632	+	//         while (!flag.get()) {
1633	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1634	+	//                 throw new AssertionFailedError("timed out");
1635	+	//             Thread.yield();
1636	+	//         }
1637	+	//     }
1638	+
1639		public static class NPETask implements Callable<String> {
1640		public String call() { throw new NullPointerException(); }
1641		}
#	Line 797 | Line 1646 | public class JSR166TestCase extends Test
1646
1647		public class ShortRunnable extends CheckedRunnable {
1648		protected void realRun() throws Throwable {
1649	<	Thread.sleep(SHORT_DELAY_MS);
1649	>	delay(SHORT_DELAY_MS);
1650		}
1651		}
1652
1653		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1654		protected void realRun() throws InterruptedException {
1655	<	Thread.sleep(SHORT_DELAY_MS);
1655	>	delay(SHORT_DELAY_MS);
1656		}
1657		}
1658
1659		public class SmallRunnable extends CheckedRunnable {
1660		protected void realRun() throws Throwable {
1661	<	Thread.sleep(SMALL_DELAY_MS);
1661	>	delay(SMALL_DELAY_MS);
1662		}
1663		}
1664
1665		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1666		protected void realRun() {
1667		try {
1668	<	Thread.sleep(SMALL_DELAY_MS);
1668	>	delay(SMALL_DELAY_MS);
1669		} catch (InterruptedException ok) {}
1670		}
1671		}
1672
1673		public class SmallCallable extends CheckedCallable {
1674		protected Object realCall() throws InterruptedException {
1675	<	Thread.sleep(SMALL_DELAY_MS);
1675	>	delay(SMALL_DELAY_MS);
1676		return Boolean.TRUE;
1677		}
1678		}
1679
1680		public class MediumRunnable extends CheckedRunnable {
1681		protected void realRun() throws Throwable {
1682	<	Thread.sleep(MEDIUM_DELAY_MS);
1682	>	delay(MEDIUM_DELAY_MS);
1683		}
1684		}
1685
1686		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1687		protected void realRun() throws InterruptedException {
1688	<	Thread.sleep(MEDIUM_DELAY_MS);
1688	>	delay(MEDIUM_DELAY_MS);
1689		}
1690		}
1691
#	Line 844 | Line 1693 | public class JSR166TestCase extends Test
1693		return new CheckedRunnable() {
1694		protected void realRun() {
1695		try {
1696	<	Thread.sleep(timeoutMillis);
1696	>	delay(timeoutMillis);
1697		} catch (InterruptedException ok) {}
1698		}};
1699		}
#	Line 852 | Line 1701 | public class JSR166TestCase extends Test
1701		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1702		protected void realRun() {
1703		try {
1704	<	Thread.sleep(MEDIUM_DELAY_MS);
1704	>	delay(MEDIUM_DELAY_MS);
1705		} catch (InterruptedException ok) {}
1706		}
1707		}
#	Line 860 | Line 1709 | public class JSR166TestCase extends Test
1709		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1710		protected void realRun() {
1711		try {
1712	<	Thread.sleep(LONG_DELAY_MS);
1712	>	delay(LONG_DELAY_MS);
1713		} catch (InterruptedException ok) {}
1714		}
1715		}
#	Line 884 | Line 1733 | public class JSR166TestCase extends Test
1733		public boolean isDone() { return done; }
1734		public void run() {
1735		try {
1736	<	Thread.sleep(timeoutMillis);
1736	>	delay(timeoutMillis);
1737		done = true;
1738		} catch (InterruptedException ok) {}
1739		}
#	Line 895 | Line 1744 | public class JSR166TestCase extends Test
1744		public volatile boolean done = false;
1745		public void run() {
1746		try {
1747	<	Thread.sleep(SHORT_DELAY_MS);
1747	>	delay(SHORT_DELAY_MS);
1748		done = true;
1749		} catch (InterruptedException ok) {}
1750		}
#	Line 905 | Line 1754 | public class JSR166TestCase extends Test
1754		public volatile boolean done = false;
1755		public void run() {
1756		try {
1757	<	Thread.sleep(SMALL_DELAY_MS);
1757	>	delay(SMALL_DELAY_MS);
1758		done = true;
1759		} catch (InterruptedException ok) {}
1760		}
#	Line 915 | Line 1764 | public class JSR166TestCase extends Test
1764		public volatile boolean done = false;
1765		public void run() {
1766		try {
1767	<	Thread.sleep(MEDIUM_DELAY_MS);
1767	>	delay(MEDIUM_DELAY_MS);
1768		done = true;
1769		} catch (InterruptedException ok) {}
1770		}
#	Line 925 | Line 1774 | public class JSR166TestCase extends Test
1774		public volatile boolean done = false;
1775		public void run() {
1776		try {
1777	<	Thread.sleep(LONG_DELAY_MS);
1777	>	delay(LONG_DELAY_MS);
1778		done = true;
1779		} catch (InterruptedException ok) {}
1780		}
#	Line 942 | Line 1791 | public class JSR166TestCase extends Test
1791		public volatile boolean done = false;
1792		public Object call() {
1793		try {
1794	<	Thread.sleep(SMALL_DELAY_MS);
1794	>	delay(SMALL_DELAY_MS);
1795		done = true;
1796		} catch (InterruptedException ok) {}
1797		return Boolean.TRUE;
#	Line 955 | Line 1804 | public class JSR166TestCase extends Test
1804		public abstract class CheckedRecursiveAction extends RecursiveAction {
1805		protected abstract void realCompute() throws Throwable;
1806
1807	<	public final void compute() {
1807	>	@Override protected final void compute() {
1808		try {
1809		realCompute();
1810	<	} catch (Throwable t) {
1811	<	threadUnexpectedException(t);
1810	>	} catch (Throwable fail) {
1811	>	threadUnexpectedException(fail);
1812		}
1813		}
1814		}
#	Line 970 | Line 1819 | public class JSR166TestCase extends Test
1819		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1820		protected abstract T realCompute() throws Throwable;
1821
1822	<	public final T compute() {
1822	>	@Override protected final T compute() {
1823		try {
1824		return realCompute();
1825	<	} catch (Throwable t) {
1826	<	threadUnexpectedException(t);
1825	>	} catch (Throwable fail) {
1826	>	threadUnexpectedException(fail);
1827		return null;
1828		}
1829		}
#	Line 989 | Line 1838 | public class JSR166TestCase extends Test
1838		}
1839
1840		/**
1841	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1842	<	* of throwing checked exceptions.
1841	>	* A CyclicBarrier that uses timed await and fails with
1842	>	* AssertionFailedErrors instead of throwing checked exceptions.
1843		*/
1844	<	public class CheckedBarrier extends CyclicBarrier {
1844	>	public static class CheckedBarrier extends CyclicBarrier {
1845		public CheckedBarrier(int parties) { super(parties); }
1846
1847		public int await() {
1848		try {
1849	<	return super.await();
1850	<	} catch (Exception e) {
1849	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1850	>	} catch (TimeoutException timedOut) {
1851	>	throw new AssertionFailedError("timed out");
1852	>	} catch (Exception fail) {
1853		AssertionFailedError afe =
1854	<	new AssertionFailedError("Unexpected exception: " + e);
1855	<	afe.initCause(e);
1854	>	new AssertionFailedError("Unexpected exception: " + fail);
1855	>	afe.initCause(fail);
1856		throw afe;
1857		}
1858		}
1859		}
1860
1861	+	void checkEmpty(BlockingQueue q) {
1862	+	try {
1863	+	assertTrue(q.isEmpty());
1864	+	assertEquals(0, q.size());
1865	+	assertNull(q.peek());
1866	+	assertNull(q.poll());
1867	+	assertNull(q.poll(0, MILLISECONDS));
1868	+	assertEquals(q.toString(), "[]");
1869	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1870	+	assertFalse(q.iterator().hasNext());
1871	+	try {
1872	+	q.element();
1873	+	shouldThrow();
1874	+	} catch (NoSuchElementException success) {}
1875	+	try {
1876	+	q.iterator().next();
1877	+	shouldThrow();
1878	+	} catch (NoSuchElementException success) {}
1879	+	try {
1880	+	q.remove();
1881	+	shouldThrow();
1882	+	} catch (NoSuchElementException success) {}
1883	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1884	+	}
1885	+
1886	+	void assertSerialEquals(Object x, Object y) {
1887	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1888	+	}
1889	+
1890	+	void assertNotSerialEquals(Object x, Object y) {
1891	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1892	+	}
1893	+
1894	+	byte[] serialBytes(Object o) {
1895	+	try {
1896	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1897	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1898	+	oos.writeObject(o);
1899	+	oos.flush();
1900	+	oos.close();
1901	+	return bos.toByteArray();
1902	+	} catch (Throwable fail) {
1903	+	threadUnexpectedException(fail);
1904	+	return new byte[0];
1905	+	}
1906	+	}
1907	+
1908	+	void assertImmutable(final Object o) {
1909	+	if (o instanceof Collection) {
1910	+	assertThrows(
1911	+	UnsupportedOperationException.class,
1912	+	new Runnable() { public void run() {
1913	+	((Collection) o).add(null);}});
1914	+	}
1915	+	}
1916	+
1917	+	@SuppressWarnings("unchecked")
1918	+	<T> T serialClone(T o) {
1919	+	try {
1920	+	ObjectInputStream ois = new ObjectInputStream
1921	+	(new ByteArrayInputStream(serialBytes(o)));
1922	+	T clone = (T) ois.readObject();
1923	+	if (o == clone) assertImmutable(o);
1924	+	assertSame(o.getClass(), clone.getClass());
1925	+	return clone;
1926	+	} catch (Throwable fail) {
1927	+	threadUnexpectedException(fail);
1928	+	return null;
1929	+	}
1930	+	}
1931	+
1932	+	/**
1933	+	* A version of serialClone that leaves error handling (for
1934	+	* e.g. NotSerializableException) up to the caller.
1935	+	*/
1936	+	@SuppressWarnings("unchecked")
1937	+	<T> T serialClonePossiblyFailing(T o)
1938	+	throws ReflectiveOperationException, java.io.IOException {
1939	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1940	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1941	+	oos.writeObject(o);
1942	+	oos.flush();
1943	+	oos.close();
1944	+	ObjectInputStream ois = new ObjectInputStream
1945	+	(new ByteArrayInputStream(bos.toByteArray()));
1946	+	T clone = (T) ois.readObject();
1947	+	if (o == clone) assertImmutable(o);
1948	+	assertSame(o.getClass(), clone.getClass());
1949	+	return clone;
1950	+	}
1951	+
1952	+	/**
1953	+	* If o implements Cloneable and has a public clone method,
1954	+	* returns a clone of o, else null.
1955	+	*/
1956	+	@SuppressWarnings("unchecked")
1957	+	<T> T cloneableClone(T o) {
1958	+	if (!(o instanceof Cloneable)) return null;
1959	+	final T clone;
1960	+	try {
1961	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1962	+	} catch (NoSuchMethodException ok) {
1963	+	return null;
1964	+	} catch (ReflectiveOperationException unexpected) {
1965	+	throw new Error(unexpected);
1966	+	}
1967	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1968	+	assertSame(o.getClass(), clone.getClass());
1969	+	return clone;
1970	+	}
1971	+
1972	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1973	+	Runnable... throwingActions) {
1974	+	for (Runnable throwingAction : throwingActions) {
1975	+	boolean threw = false;
1976	+	try { throwingAction.run(); }
1977	+	catch (Throwable t) {
1978	+	threw = true;
1979	+	if (!expectedExceptionClass.isInstance(t)) {
1980	+	AssertionFailedError afe =
1981	+	new AssertionFailedError
1982	+	("Expected " + expectedExceptionClass.getName() +
1983	+	", got " + t.getClass().getName());
1984	+	afe.initCause(t);
1985	+	threadUnexpectedException(afe);
1986	+	}
1987	+	}
1988	+	if (!threw)
1989	+	shouldThrow(expectedExceptionClass.getName());
1990	+	}
1991	+	}
1992	+
1993	+	public void assertIteratorExhausted(Iterator<?> it) {
1994	+	try {
1995	+	it.next();
1996	+	shouldThrow();
1997	+	} catch (NoSuchElementException success) {}
1998	+	assertFalse(it.hasNext());
1999	+	}
2000	+
2001	+	public <T> Callable<T> callableThrowing(final Exception ex) {
2002	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
2003	+	}
2004	+
2005	+	public Runnable runnableThrowing(final RuntimeException ex) {
2006	+	return new Runnable() { public void run() { throw ex; }};
2007	+	}
2008	+
2009	+	/** A reusable thread pool to be shared by tests. */
2010	+	static final ExecutorService cachedThreadPool =
2011	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
2012	+	1000L, MILLISECONDS,
2013	+	new SynchronousQueue<Runnable>());
2014	+
2015	+	static <T> void shuffle(T[] array) {
2016	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
2017	+	}
2018		}

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