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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.62 by jsr166, Mon Oct 11 05:40:41 2010 UTC vs.
Revision 1.244 by jsr166, Tue Apr 10 18:09:58 2018 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by Doug Lea with assistance from members of JCP JSR-166
3	<	* Expert Group and released to the public domain, as explained at
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 18 | 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.Deque;
70	+	import java.util.Enumeration;
71	+	import java.util.HashSet;
72	+	import java.util.Iterator;
73	+	import java.util.List;
74	+	import java.util.NoSuchElementException;
75	+	import java.util.PropertyPermission;
76	+	import java.util.Set;
77	+	import java.util.concurrent.BlockingQueue;
78	+	import java.util.concurrent.Callable;
79	+	import java.util.concurrent.CountDownLatch;
80	+	import java.util.concurrent.CyclicBarrier;
81	+	import java.util.concurrent.ExecutionException;
82	+	import java.util.concurrent.Executor;
83	+	import java.util.concurrent.Executors;
84	+	import java.util.concurrent.ExecutorService;
85	+	import java.util.concurrent.ForkJoinPool;
86	+	import java.util.concurrent.Future;
87	+	import java.util.concurrent.FutureTask;
88	+	import java.util.concurrent.RecursiveAction;
89	+	import java.util.concurrent.RecursiveTask;
90	+	import java.util.concurrent.RejectedExecutionException;
91	+	import java.util.concurrent.RejectedExecutionHandler;
92	+	import java.util.concurrent.Semaphore;
93	+	import java.util.concurrent.ScheduledExecutorService;
94	+	import java.util.concurrent.ScheduledFuture;
95	+	import java.util.concurrent.SynchronousQueue;
96	+	import java.util.concurrent.ThreadFactory;
97	+	import java.util.concurrent.ThreadLocalRandom;
98	+	import java.util.concurrent.ThreadPoolExecutor;
99	+	import java.util.concurrent.TimeUnit;
100	+	import java.util.concurrent.TimeoutException;
101	+	import java.util.concurrent.atomic.AtomicBoolean;
102	+	import java.util.concurrent.atomic.AtomicReference;
103	+	import java.util.regex.Pattern;
104	+
105	+	import junit.framework.Test;
106	+	import junit.framework.TestCase;
107	+	import junit.framework.TestResult;
108	+	import junit.framework.TestSuite;
109
110		/**
111		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 29 | Line 117 | import java.security.SecurityPermission;
117		*
118		* <ol>
119		*
120	<	* <li> All assertions in code running in generated threads must use
120	>	* <li>All assertions in code running in generated threads must use
121		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
122		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
123		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
124		* particularly recommended) for other code to use these forms too.
125		* Only the most typically used JUnit assertion methods are defined
126	<	* this way, but enough to live with.</li>
126	>	* this way, but enough to live with.
127		*
128	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
128	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
129		* to invoke {@code super.setUp} and {@code super.tearDown} within
130		* them. These methods are used to clear and check for thread
131	<	* assertion failures.</li>
131	>	* assertion failures.
132		*
133		* <li>All delays and timeouts must use one of the constants {@code
134		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 51 | Line 139 | import java.security.SecurityPermission;
139		* is always discriminable as larger than SHORT and smaller than
140		* MEDIUM.  And so on. These constants are set to conservative values,
141		* but even so, if there is ever any doubt, they can all be increased
142	<	* in one spot to rerun tests on slower platforms.</li>
142	>	* in one spot to rerun tests on slower platforms.
143		*
144	<	* <li> All threads generated must be joined inside each test case
144	>	* <li>All threads generated must be joined inside each test case
145		* method (or {@code fail} to do so) before returning from the
146		* method. The {@code joinPool} method can be used to do this when
147	<	* using Executors.</li>
147	>	* using Executors.
148		*
149		* </ol>
150		*
151	<	* <p> <b>Other notes</b>
151	>	* <p><b>Other notes</b>
152		* <ul>
153		*
154	<	* <li> Usually, there is one testcase method per JSR166 method
154	>	* <li>Usually, there is one testcase method per JSR166 method
155		* covering "normal" operation, and then as many exception-testing
156		* methods as there are exceptions the method can throw. Sometimes
157		* there are multiple tests per JSR166 method when the different
158		* "normal" behaviors differ significantly. And sometimes testcases
159	<	* cover multiple methods when they cannot be tested in
72	<	* isolation.</li>
159	>	* cover multiple methods when they cannot be tested in isolation.
160		*
161	<	* <li> The documentation style for testcases is to provide as javadoc
161	>	* <li>The documentation style for testcases is to provide as javadoc
162		* a simple sentence or two describing the property that the testcase
163		* method purports to test. The javadocs do not say anything about how
164	<	* the property is tested. To find out, read the code.</li>
164	>	* the property is tested. To find out, read the code.
165		*
166	<	* <li> These tests are "conformance tests", and do not attempt to
166	>	* <li>These tests are "conformance tests", and do not attempt to
167		* test throughput, latency, scalability or other performance factors
168		* (see the separate "jtreg" tests for a set intended to check these
169		* for the most central aspects of functionality.) So, most tests use
170		* the smallest sensible numbers of threads, collection sizes, etc
171	<	* needed to check basic conformance.</li>
171	>	* needed to check basic conformance.
172		*
173		* <li>The test classes currently do not declare inclusion in
174		* any particular package to simplify things for people integrating
175	<	* them in TCK test suites.</li>
175	>	* them in TCK test suites.
176		*
177	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
178	<	* runs all JSR166 unit tests.</li>
177	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
178	>	* runs all JSR166 unit tests.
179		*
180		* </ul>
181		*/
#	Line 100 | Line 187 | public class JSR166TestCase extends Test
187		Boolean.getBoolean("jsr166.expensiveTests");
188
189		/**
190	+	* If true, also run tests that are not part of the official tck
191	+	* because they test unspecified implementation details.
192	+	*/
193	+	protected static final boolean testImplementationDetails =
194	+	Boolean.getBoolean("jsr166.testImplementationDetails");
195	+
196	+	/**
197		* If true, report on stdout all "slow" tests, that is, ones that
198		* take more than profileThreshold milliseconds to execute.
199		*/
#	Line 113 | Line 207 | public class JSR166TestCase extends Test
207		private static final long profileThreshold =
208		Long.getLong("jsr166.profileThreshold", 100);
209
210	+	/**
211	+	* The number of repetitions per test (for tickling rare bugs).
212	+	*/
213	+	private static final int runsPerTest =
214	+	Integer.getInteger("jsr166.runsPerTest", 1);
215	+
216	+	/**
217	+	* The number of repetitions of the test suite (for finding leaks?).
218	+	*/
219	+	private static final int suiteRuns =
220	+	Integer.getInteger("jsr166.suiteRuns", 1);
221	+
222	+	/**
223	+	* Returns the value of the system property, or NaN if not defined.
224	+	*/
225	+	private static float systemPropertyValue(String name) {
226	+	String floatString = System.getProperty(name);
227	+	if (floatString == null)
228	+	return Float.NaN;
229	+	try {
230	+	return Float.parseFloat(floatString);
231	+	} catch (NumberFormatException ex) {
232	+	throw new IllegalArgumentException(
233	+	String.format("Bad float value in system property %s=%s",
234	+	name, floatString));
235	+	}
236	+	}
237	+
238	+	/**
239	+	* The scaling factor to apply to standard delays used in tests.
240	+	* May be initialized from any of:
241	+	* - the "jsr166.delay.factor" system property
242	+	* - the "test.timeout.factor" system property (as used by jtreg)
243	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
244	+	* - hard-coded fuzz factor when using a known slowpoke VM
245	+	*/
246	+	private static final float delayFactor = delayFactor();
247	+
248	+	private static float delayFactor() {
249	+	float x;
250	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
251	+	return x;
252	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
253	+	return x;
254	+	String prop = System.getProperty("java.vm.version");
255	+	if (prop != null && prop.matches(".*debug.*"))
256	+	return 4.0f; // How much slower is fastdebug than product?!
257	+	return 1.0f;
258	+	}
259	+
260	+	public JSR166TestCase() { super(); }
261	+	public JSR166TestCase(String name) { super(name); }
262	+
263	+	/**
264	+	* A filter for tests to run, matching strings of the form
265	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
266	+	* Usefully combined with jsr166.runsPerTest.
267	+	*/
268	+	private static final Pattern methodFilter = methodFilter();
269	+
270	+	private static Pattern methodFilter() {
271	+	String regex = System.getProperty("jsr166.methodFilter");
272	+	return (regex == null) ? null : Pattern.compile(regex);
273	+	}
274	+
275	+	// Instrumentation to debug very rare, but very annoying hung test runs.
276	+	static volatile TestCase currentTestCase;
277	+	// static volatile int currentRun = 0;
278	+	static {
279	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
280	+	// Avoid spurious reports with enormous runsPerTest.
281	+	// A single test case run should never take more than 1 second.
282	+	// But let's cap it at the high end too ...
283	+	final int timeoutMinutes =
284	+	Math.min(15, Math.max(runsPerTest / 60, 1));
285	+	for (TestCase lastTestCase = currentTestCase;;) {
286	+	try { MINUTES.sleep(timeoutMinutes); }
287	+	catch (InterruptedException unexpected) { break; }
288	+	if (lastTestCase == currentTestCase) {
289	+	System.err.printf(
290	+	"Looks like we're stuck running test: %s%n",
291	+	lastTestCase);
292	+	//                     System.err.printf(
293	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
294	+	//                         lastTestCase, currentRun, runsPerTest);
295	+	//                     System.err.println("availableProcessors=" +
296	+	//                         Runtime.getRuntime().availableProcessors());
297	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
298	+	dumpTestThreads();
299	+	// one stack dump is probably enough; more would be spam
300	+	break;
301	+	}
302	+	lastTestCase = currentTestCase;
303	+	}}};
304	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
305	+	thread.setDaemon(true);
306	+	thread.start();
307	+	}
308	+
309	+	//     public static String cpuModel() {
310	+	//         try {
311	+	//             java.util.regex.Matcher matcher
312	+	//               = Pattern.compile("model name\\s*: (.*)")
313	+	//                 .matcher(new String(
314	+	//                     java.nio.file.Files.readAllBytes(
315	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
316	+	//             matcher.find();
317	+	//             return matcher.group(1);
318	+	//         } catch (Exception ex) { return null; }
319	+	//     }
320	+
321	+	public void runBare() throws Throwable {
322	+	currentTestCase = this;
323	+	if (methodFilter == null
324	+	|| methodFilter.matcher(toString()).find())
325	+	super.runBare();
326	+	}
327	+
328		protected void runTest() throws Throwable {
329	<	if (profileTests)
330	<	runTestProfiled();
331	<	else
332	<	super.runTest();
329	>	for (int i = 0; i < runsPerTest; i++) {
330	>	// currentRun = i;
331	>	if (profileTests)
332	>	runTestProfiled();
333	>	else
334	>	super.runTest();
335	>	}
336		}
337
338		protected void runTestProfiled() throws Throwable {
339	<	long t0 = System.nanoTime();
340	<	try {
339	>	for (int i = 0; i < 2; i++) {
340	>	long startTime = System.nanoTime();
341		super.runTest();
342	<	} finally {
343	<	long elapsedMillis =
344	<	(System.nanoTime() - t0) / (1000L * 1000L);
345	<	if (elapsedMillis >= profileThreshold)
342	>	long elapsedMillis = millisElapsedSince(startTime);
343	>	if (elapsedMillis < profileThreshold)
344	>	break;
345	>	// Never report first run of any test; treat it as a
346	>	// warmup run, notably to trigger all needed classloading,
347	>	if (i > 0)
348		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
349		}
350		}
351	<
351	>
352		/**
353	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
353	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
354		*/
355		public static void main(String[] args) {
356	+	main(suite(), args);
357	+	}
358	+
359	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
360	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
361	+	long runTime;
362	+	public void startTest(Test test) {}
363	+	protected void printHeader(long runTime) {
364	+	this.runTime = runTime; // defer printing for later
365	+	}
366	+	protected void printFooter(TestResult result) {
367	+	if (result.wasSuccessful()) {
368	+	getWriter().println("OK (" + result.runCount() + " tests)"
369	+	+ "  Time: " + elapsedTimeAsString(runTime));
370	+	} else {
371	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
372	+	super.printFooter(result);
373	+	}
374	+	}
375	+	}
376	+
377	+	/**
378	+	* Returns a TestRunner that doesn't bother with unnecessary
379	+	* fluff, like printing a "." for each test case.
380	+	*/
381	+	static junit.textui.TestRunner newPithyTestRunner() {
382	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
383	+	runner.setPrinter(new PithyResultPrinter(System.out));
384	+	return runner;
385	+	}
386	+
387	+	/**
388	+	* Runs all unit tests in the given test suite.
389	+	* Actual behavior influenced by jsr166.* system properties.
390	+	*/
391	+	static void main(Test suite, String[] args) {
392		if (useSecurityManager) {
393		System.err.println("Setting a permissive security manager");
394		Policy.setPolicy(permissivePolicy());
395		System.setSecurityManager(new SecurityManager());
396		}
397	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
398	<
399	<	Test s = suite();
400	<	for (int i = 0; i < iters; ++i) {
148	<	junit.textui.TestRunner.run(s);
397	>	for (int i = 0; i < suiteRuns; i++) {
398	>	TestResult result = newPithyTestRunner().doRun(suite);
399	>	if (!result.wasSuccessful())
400	>	System.exit(1);
401		System.gc();
402		System.runFinalization();
403		}
152	–	System.exit(0);
404		}
405
406		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 165 | Line 416 | public class JSR166TestCase extends Test
416		return suite;
417		}
418
419	+	public static void addNamedTestClasses(TestSuite suite,
420	+	String... testClassNames) {
421	+	for (String testClassName : testClassNames) {
422	+	try {
423	+	Class<?> testClass = Class.forName(testClassName);
424	+	Method m = testClass.getDeclaredMethod("suite");
425	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
426	+	} catch (ReflectiveOperationException e) {
427	+	throw new AssertionError("Missing test class", e);
428	+	}
429	+	}
430	+	}
431	+
432	+	public static final double JAVA_CLASS_VERSION;
433	+	public static final String JAVA_SPECIFICATION_VERSION;
434	+	static {
435	+	try {
436	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
437	+	new java.security.PrivilegedAction<Double>() {
438	+	public Double run() {
439	+	return Double.valueOf(System.getProperty("java.class.version"));}});
440	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
441	+	new java.security.PrivilegedAction<String>() {
442	+	public String run() {
443	+	return System.getProperty("java.specification.version");}});
444	+	} catch (Throwable t) {
445	+	throw new Error(t);
446	+	}
447	+	}
448	+
449	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
450	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
451	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
452	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
453	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
454	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
455	+
456		/**
457		* Collects all JSR166 unit tests as one suite.
458		*/
459		public static Test suite() {
460	<	return newTestSuite(
460	>	// Java7+ test classes
461	>	TestSuite suite = newTestSuite(
462		ForkJoinPoolTest.suite(),
463		ForkJoinTaskTest.suite(),
464		RecursiveActionTest.suite(),
#	Line 183 | Line 472 | public class JSR166TestCase extends Test
472		AbstractQueuedLongSynchronizerTest.suite(),
473		ArrayBlockingQueueTest.suite(),
474		ArrayDequeTest.suite(),
475	+	ArrayListTest.suite(),
476		AtomicBooleanTest.suite(),
477		AtomicIntegerArrayTest.suite(),
478		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 205 | Line 495 | public class JSR166TestCase extends Test
495		CopyOnWriteArrayListTest.suite(),
496		CopyOnWriteArraySetTest.suite(),
497		CountDownLatchTest.suite(),
498	+	CountedCompleterTest.suite(),
499		CyclicBarrierTest.suite(),
500		DelayQueueTest.suite(),
501		EntryTest.suite(),
#	Line 233 | Line 524 | public class JSR166TestCase extends Test
524		TreeMapTest.suite(),
525		TreeSetTest.suite(),
526		TreeSubMapTest.suite(),
527	<	TreeSubSetTest.suite());
527	>	TreeSubSetTest.suite(),
528	>	VectorTest.suite());
529	>
530	>	// Java8+ test classes
531	>	if (atLeastJava8()) {
532	>	String[] java8TestClassNames = {
533	>	"ArrayDeque8Test",
534	>	"Atomic8Test",
535	>	"CompletableFutureTest",
536	>	"ConcurrentHashMap8Test",
537	>	"CountedCompleter8Test",
538	>	"DoubleAccumulatorTest",
539	>	"DoubleAdderTest",
540	>	"ForkJoinPool8Test",
541	>	"ForkJoinTask8Test",
542	>	"HashMapTest",
543	>	"LinkedBlockingDeque8Test",
544	>	"LinkedBlockingQueue8Test",
545	>	"LongAccumulatorTest",
546	>	"LongAdderTest",
547	>	"SplittableRandomTest",
548	>	"StampedLockTest",
549	>	"SubmissionPublisherTest",
550	>	"ThreadLocalRandom8Test",
551	>	"TimeUnit8Test",
552	>	};
553	>	addNamedTestClasses(suite, java8TestClassNames);
554	>	}
555	>
556	>	// Java9+ test classes
557	>	if (atLeastJava9()) {
558	>	String[] java9TestClassNames = {
559	>	"AtomicBoolean9Test",
560	>	"AtomicInteger9Test",
561	>	"AtomicIntegerArray9Test",
562	>	"AtomicLong9Test",
563	>	"AtomicLongArray9Test",
564	>	"AtomicReference9Test",
565	>	"AtomicReferenceArray9Test",
566	>	"ExecutorCompletionService9Test",
567	>	"ForkJoinPool9Test",
568	>	};
569	>	addNamedTestClasses(suite, java9TestClassNames);
570	>	}
571	>
572	>	return suite;
573	>	}
574	>
575	>	/** Returns list of junit-style test method names in given class. */
576	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
577	>	Method[] methods = testClass.getDeclaredMethods();
578	>	ArrayList<String> names = new ArrayList<>(methods.length);
579	>	for (Method method : methods) {
580	>	if (method.getName().startsWith("test")
581	>	&& Modifier.isPublic(method.getModifiers())
582	>	// method.getParameterCount() requires jdk8+
583	>	&& method.getParameterTypes().length == 0) {
584	>	names.add(method.getName());
585	>	}
586	>	}
587	>	return names;
588	>	}
589	>
590	>	/**
591	>	* Returns junit-style testSuite for the given test class, but
592	>	* parameterized by passing extra data to each test.
593	>	*/
594	>	public static <ExtraData> Test parameterizedTestSuite
595	>	(Class<? extends JSR166TestCase> testClass,
596	>	Class<ExtraData> dataClass,
597	>	ExtraData data) {
598	>	try {
599	>	TestSuite suite = new TestSuite();
600	>	Constructor c =
601	>	testClass.getDeclaredConstructor(dataClass, String.class);
602	>	for (String methodName : testMethodNames(testClass))
603	>	suite.addTest((Test) c.newInstance(data, methodName));
604	>	return suite;
605	>	} catch (ReflectiveOperationException e) {
606	>	throw new AssertionError(e);
607	>	}
608	>	}
609	>
610	>	/**
611	>	* Returns junit-style testSuite for the jdk8 extension of the
612	>	* given test class, but parameterized by passing extra data to
613	>	* each test.  Uses reflection to allow compilation in jdk7.
614	>	*/
615	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
616	>	(Class<? extends JSR166TestCase> testClass,
617	>	Class<ExtraData> dataClass,
618	>	ExtraData data) {
619	>	if (atLeastJava8()) {
620	>	String name = testClass.getName();
621	>	String name8 = name.replaceAll("Test$", "8Test");
622	>	if (name.equals(name8)) throw new AssertionError(name);
623	>	try {
624	>	return (Test)
625	>	Class.forName(name8)
626	>	.getMethod("testSuite", dataClass)
627	>	.invoke(null, data);
628	>	} catch (ReflectiveOperationException e) {
629	>	throw new AssertionError(e);
630	>	}
631	>	} else {
632	>	return new TestSuite();
633	>	}
634		}
635
636	+	// Delays for timing-dependent tests, in milliseconds.
637
638		public static long SHORT_DELAY_MS;
639		public static long SMALL_DELAY_MS;
640		public static long MEDIUM_DELAY_MS;
641		public static long LONG_DELAY_MS;
642
643	+	private static final long RANDOM_TIMEOUT;
644	+	private static final long RANDOM_EXPIRED_TIMEOUT;
645	+	private static final TimeUnit RANDOM_TIMEUNIT;
646	+	static {
647	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
648	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
649	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
650	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
651	+	TimeUnit[] timeUnits = TimeUnit.values();
652	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
653	+	}
654
655		/**
656	<	* Returns the shortest timed delay. This could
657	<	* be reimplemented to use for example a Property.
656	>	* Returns a timeout for use when any value at all will do.
657	>	*/
658	>	static long randomTimeout() { return RANDOM_TIMEOUT; }
659	>
660	>	/**
661	>	* Returns a timeout that means "no waiting", i.e. not positive.
662	>	*/
663	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
664	>
665	>	/**
666	>	* Returns a random non-null TimeUnit.
667	>	*/
668	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
669	>
670	>	/**
671	>	* Returns the shortest timed delay. This can be scaled up for
672	>	* slow machines using the jsr166.delay.factor system property,
673	>	* or via jtreg's -timeoutFactor: flag.
674	>	* http://openjdk.java.net/jtreg/command-help.html
675		*/
676		protected long getShortDelay() {
677	<	return 50;
677	>	return (long) (50 * delayFactor);
678		}
679
254	–
680		/**
681		* Sets delays as multiples of SHORT_DELAY.
682		*/
#	Line 259 | Line 684 | public class JSR166TestCase extends Test
684		SHORT_DELAY_MS = getShortDelay();
685		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
686		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
687	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
687	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
688	>	}
689	>
690	>	private static final long TIMEOUT_DELAY_MS
691	>	= (long) (12.0 * Math.cbrt(delayFactor));
692	>
693	>	/**
694	>	* Returns a timeout in milliseconds to be used in tests that verify
695	>	* that operations block or time out.  We want this to be longer
696	>	* than the OS scheduling quantum, but not too long, so don't scale
697	>	* linearly with delayFactor; we use "crazy" cube root instead.
698	>	*/
699	>	static long timeoutMillis() {
700	>	return TIMEOUT_DELAY_MS;
701	>	}
702	>
703	>	/**
704	>	* Returns a new Date instance representing a time at least
705	>	* delayMillis milliseconds in the future.
706	>	*/
707	>	Date delayedDate(long delayMillis) {
708	>	// Add 1 because currentTimeMillis is known to round into the past.
709	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
710		}
711
712		/**
713		* The first exception encountered if any threadAssertXXX method fails.
714		*/
715		private final AtomicReference<Throwable> threadFailure
716	<	= new AtomicReference<Throwable>(null);
716	>	= new AtomicReference<>(null);
717
718		/**
719		* Records an exception so that it can be rethrown later in the test
#	Line 275 | Line 722 | public class JSR166TestCase extends Test
722		* the same test have no effect.
723		*/
724		public void threadRecordFailure(Throwable t) {
725	+	System.err.println(t);
726	+	dumpTestThreads();
727		threadFailure.compareAndSet(null, t);
728		}
729
#	Line 282 | Line 731 | public class JSR166TestCase extends Test
731		setDelays();
732		}
733
734	+	void tearDownFail(String format, Object... args) {
735	+	String msg = toString() + ": " + String.format(format, args);
736	+	System.err.println(msg);
737	+	dumpTestThreads();
738	+	throw new AssertionError(msg);
739	+	}
740	+
741		/**
742	+	* Extra checks that get done for all test cases.
743	+	*
744		* Triggers test case failure if any thread assertions have failed,
745		* by rethrowing, in the test harness thread, any exception recorded
746		* earlier by threadRecordFailure.
747	+	*
748	+	* Triggers test case failure if interrupt status is set in the main thread.
749		*/
750		public void tearDown() throws Exception {
751	<	Throwable t = threadFailure.get();
751	>	Throwable t = threadFailure.getAndSet(null);
752		if (t != null) {
753		if (t instanceof Error)
754		throw (Error) t;
#	Line 296 | Line 756 | public class JSR166TestCase extends Test
756		throw (RuntimeException) t;
757		else if (t instanceof Exception)
758		throw (Exception) t;
759	<	else {
760	<	AssertionFailedError afe =
761	<	new AssertionFailedError(t.toString());
762	<	afe.initCause(t);
763	<	throw afe;
759	>	else
760	>	throw new AssertionError(t.toString(), t);
761	>	}
762	>
763	>	if (Thread.interrupted())
764	>	tearDownFail("interrupt status set in main thread");
765	>
766	>	checkForkJoinPoolThreadLeaks();
767	>	}
768	>
769	>	/**
770	>	* Finds missing PoolCleaners
771	>	*/
772	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
773	>	Thread[] survivors = new Thread[7];
774	>	int count = Thread.enumerate(survivors);
775	>	for (int i = 0; i < count; i++) {
776	>	Thread thread = survivors[i];
777	>	String name = thread.getName();
778	>	if (name.startsWith("ForkJoinPool-")) {
779	>	// give thread some time to terminate
780	>	thread.join(LONG_DELAY_MS);
781	>	if (thread.isAlive())
782	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
783	>	thread);
784		}
785		}
786	+
787	+	if (!ForkJoinPool.commonPool()
788	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
789	+	tearDownFail("ForkJoin common pool thread stuck");
790		}
791
792		/**
793		* Just like fail(reason), but additionally recording (using
794	<	* threadRecordFailure) any AssertionFailedError thrown, so that
795	<	* the current testcase will fail.
794	>	* threadRecordFailure) any AssertionError thrown, so that the
795	>	* current testcase will fail.
796		*/
797		public void threadFail(String reason) {
798		try {
799		fail(reason);
800	<	} catch (AssertionFailedError t) {
801	<	threadRecordFailure(t);
802	<	fail(reason);
800	>	} catch (AssertionError fail) {
801	>	threadRecordFailure(fail);
802	>	throw fail;
803		}
804		}
805
806		/**
807		* Just like assertTrue(b), but additionally recording (using
808	<	* threadRecordFailure) any AssertionFailedError thrown, so that
809	<	* the current testcase will fail.
808	>	* threadRecordFailure) any AssertionError thrown, so that the
809	>	* current testcase will fail.
810		*/
811		public void threadAssertTrue(boolean b) {
812		try {
813		assertTrue(b);
814	<	} catch (AssertionFailedError t) {
815	<	threadRecordFailure(t);
816	<	throw t;
814	>	} catch (AssertionError fail) {
815	>	threadRecordFailure(fail);
816	>	throw fail;
817		}
818		}
819
820		/**
821		* Just like assertFalse(b), but additionally recording (using
822	<	* threadRecordFailure) any AssertionFailedError thrown, so that
823	<	* the current testcase will fail.
822	>	* threadRecordFailure) any AssertionError thrown, so that the
823	>	* current testcase will fail.
824		*/
825		public void threadAssertFalse(boolean b) {
826		try {
827		assertFalse(b);
828	<	} catch (AssertionFailedError t) {
829	<	threadRecordFailure(t);
830	<	throw t;
828	>	} catch (AssertionError fail) {
829	>	threadRecordFailure(fail);
830	>	throw fail;
831		}
832		}
833
834		/**
835		* Just like assertNull(x), but additionally recording (using
836	<	* threadRecordFailure) any AssertionFailedError thrown, so that
837	<	* the current testcase will fail.
836	>	* threadRecordFailure) any AssertionError thrown, so that the
837	>	* current testcase will fail.
838		*/
839		public void threadAssertNull(Object x) {
840		try {
841		assertNull(x);
842	<	} catch (AssertionFailedError t) {
843	<	threadRecordFailure(t);
844	<	throw t;
842	>	} catch (AssertionError fail) {
843	>	threadRecordFailure(fail);
844	>	throw fail;
845		}
846		}
847
848		/**
849		* Just like assertEquals(x, y), but additionally recording (using
850	<	* threadRecordFailure) any AssertionFailedError thrown, so that
851	<	* the current testcase will fail.
850	>	* threadRecordFailure) any AssertionError thrown, so that the
851	>	* current testcase will fail.
852		*/
853		public void threadAssertEquals(long x, long y) {
854		try {
855		assertEquals(x, y);
856	<	} catch (AssertionFailedError t) {
857	<	threadRecordFailure(t);
858	<	throw t;
856	>	} catch (AssertionError fail) {
857	>	threadRecordFailure(fail);
858	>	throw fail;
859		}
860		}
861
862		/**
863		* Just like assertEquals(x, y), but additionally recording (using
864	<	* threadRecordFailure) any AssertionFailedError thrown, so that
865	<	* the current testcase will fail.
864	>	* threadRecordFailure) any AssertionError thrown, so that the
865	>	* current testcase will fail.
866		*/
867		public void threadAssertEquals(Object x, Object y) {
868		try {
869		assertEquals(x, y);
870	<	} catch (AssertionFailedError t) {
871	<	threadRecordFailure(t);
872	<	throw t;
873	<	} catch (Throwable t) {
874	<	threadUnexpectedException(t);
870	>	} catch (AssertionError fail) {
871	>	threadRecordFailure(fail);
872	>	throw fail;
873	>	} catch (Throwable fail) {
874	>	threadUnexpectedException(fail);
875		}
876		}
877
878		/**
879		* Just like assertSame(x, y), but additionally recording (using
880	<	* threadRecordFailure) any AssertionFailedError thrown, so that
881	<	* the current testcase will fail.
880	>	* threadRecordFailure) any AssertionError thrown, so that the
881	>	* current testcase will fail.
882		*/
883		public void threadAssertSame(Object x, Object y) {
884		try {
885		assertSame(x, y);
886	<	} catch (AssertionFailedError t) {
887	<	threadRecordFailure(t);
888	<	throw t;
886	>	} catch (AssertionError fail) {
887	>	threadRecordFailure(fail);
888	>	throw fail;
889		}
890		}
891
#	Line 421 | Line 905 | public class JSR166TestCase extends Test
905
906		/**
907		* Records the given exception using {@link #threadRecordFailure},
908	<	* then rethrows the exception, wrapping it in an
909	<	* AssertionFailedError if necessary.
908	>	* then rethrows the exception, wrapping it in an AssertionError
909	>	* if necessary.
910		*/
911		public void threadUnexpectedException(Throwable t) {
912		threadRecordFailure(t);
#	Line 431 | Line 915 | public class JSR166TestCase extends Test
915		throw (RuntimeException) t;
916		else if (t instanceof Error)
917		throw (Error) t;
918	<	else {
919	<	AssertionFailedError afe =
920	<	new AssertionFailedError("unexpected exception: " + t);
921	<	t.initCause(t);
922	<	throw afe;
918	>	else
919	>	throw new AssertionError("unexpected exception: " + t, t);
920	>	}
921	>
922	>	/**
923	>	* Delays, via Thread.sleep, for the given millisecond delay, but
924	>	* if the sleep is shorter than specified, may re-sleep or yield
925	>	* until time elapses.  Ensures that the given time, as measured
926	>	* by System.nanoTime(), has elapsed.
927	>	*/
928	>	static void delay(long millis) throws InterruptedException {
929	>	long nanos = millis * (1000 * 1000);
930	>	final long wakeupTime = System.nanoTime() + nanos;
931	>	do {
932	>	if (millis > 0L)
933	>	Thread.sleep(millis);
934	>	else // too short to sleep
935	>	Thread.yield();
936	>	nanos = wakeupTime - System.nanoTime();
937	>	millis = nanos / (1000 * 1000);
938	>	} while (nanos >= 0L);
939	>	}
940	>
941	>	/**
942	>	* Allows use of try-with-resources with per-test thread pools.
943	>	*/
944	>	class PoolCleaner implements AutoCloseable {
945	>	private final ExecutorService pool;
946	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
947	>	public void close() { joinPool(pool); }
948	>	}
949	>
950	>	/**
951	>	* An extension of PoolCleaner that has an action to release the pool.
952	>	*/
953	>	class PoolCleanerWithReleaser extends PoolCleaner {
954	>	private final Runnable releaser;
955	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
956	>	super(pool);
957	>	this.releaser = releaser;
958		}
959	+	public void close() {
960	+	try {
961	+	releaser.run();
962	+	} finally {
963	+	super.close();
964	+	}
965	+	}
966	+	}
967	+
968	+	PoolCleaner cleaner(ExecutorService pool) {
969	+	return new PoolCleaner(pool);
970	+	}
971	+
972	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
973	+	return new PoolCleanerWithReleaser(pool, releaser);
974	+	}
975	+
976	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
977	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
978	+	}
979	+
980	+	Runnable releaser(final CountDownLatch latch) {
981	+	return new Runnable() { public void run() {
982	+	do { latch.countDown(); }
983	+	while (latch.getCount() > 0);
984	+	}};
985	+	}
986	+
987	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
988	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
989	+	}
990	+
991	+	Runnable releaser(final AtomicBoolean flag) {
992	+	return new Runnable() { public void run() { flag.set(true); }};
993		}
994
995		/**
996		* Waits out termination of a thread pool or fails doing so.
997		*/
998	<	public void joinPool(ExecutorService exec) {
998	>	void joinPool(ExecutorService pool) {
999		try {
1000	<	exec.shutdown();
1001	<	assertTrue("ExecutorService did not terminate in a timely manner",
1002	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
1000	>	pool.shutdown();
1001	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1002	>	try {
1003	>	threadFail("ExecutorService " + pool +
1004	>	" did not terminate in a timely manner");
1005	>	} finally {
1006	>	// last resort, for the benefit of subsequent tests
1007	>	pool.shutdownNow();
1008	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1009	>	}
1010	>	}
1011		} catch (SecurityException ok) {
1012		// Allowed in case test doesn't have privs
1013	<	} catch (InterruptedException ie) {
1014	<	fail("Unexpected InterruptedException");
1013	>	} catch (InterruptedException fail) {
1014	>	threadFail("Unexpected InterruptedException");
1015	>	}
1016	>	}
1017	>
1018	>	/**
1019	>	* Like Runnable, but with the freedom to throw anything.
1020	>	* junit folks had the same idea:
1021	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1022	>	*/
1023	>	interface Action { public void run() throws Throwable; }
1024	>
1025	>	/**
1026	>	* Runs all the given actions in parallel, failing if any fail.
1027	>	* Useful for running multiple variants of tests that are
1028	>	* necessarily individually slow because they must block.
1029	>	*/
1030	>	void testInParallel(Action ... actions) {
1031	>	ExecutorService pool = Executors.newCachedThreadPool();
1032	>	try (PoolCleaner cleaner = cleaner(pool)) {
1033	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1034	>	for (final Action action : actions)
1035	>	futures.add(pool.submit(new CheckedRunnable() {
1036	>	public void realRun() throws Throwable { action.run();}}));
1037	>	for (Future<?> future : futures)
1038	>	try {
1039	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1040	>	} catch (ExecutionException ex) {
1041	>	threadUnexpectedException(ex.getCause());
1042	>	} catch (Exception ex) {
1043	>	threadUnexpectedException(ex);
1044	>	}
1045		}
1046		}
1047
1048	+	/**
1049	+	* A debugging tool to print stack traces of most threads, as jstack does.
1050	+	* Uninteresting threads are filtered out.
1051	+	*/
1052	+	static void dumpTestThreads() {
1053	+	SecurityManager sm = System.getSecurityManager();
1054	+	if (sm != null) {
1055	+	try {
1056	+	System.setSecurityManager(null);
1057	+	} catch (SecurityException giveUp) {
1058	+	return;
1059	+	}
1060	+	}
1061	+
1062	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1063	+	System.err.println("------ stacktrace dump start ------");
1064	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1065	+	final String name = info.getThreadName();
1066	+	String lockName;
1067	+	if ("Signal Dispatcher".equals(name))
1068	+	continue;
1069	+	if ("Reference Handler".equals(name)
1070	+	&& (lockName = info.getLockName()) != null
1071	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1072	+	continue;
1073	+	if ("Finalizer".equals(name)
1074	+	&& (lockName = info.getLockName()) != null
1075	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1076	+	continue;
1077	+	if ("checkForWedgedTest".equals(name))
1078	+	continue;
1079	+	System.err.print(info);
1080	+	}
1081	+	System.err.println("------ stacktrace dump end ------");
1082	+
1083	+	if (sm != null) System.setSecurityManager(sm);
1084	+	}
1085	+
1086	+	/**
1087	+	* Checks that thread eventually enters the expected blocked thread state.
1088	+	*/
1089	+	void assertThreadBlocks(Thread thread, Thread.State expected) {
1090	+	// always sleep at least 1 ms, with high probability avoiding
1091	+	// transitory states
1092	+	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1093	+	try { delay(1); }
1094	+	catch (InterruptedException fail) {
1095	+	throw new AssertionError("Unexpected InterruptedException", fail);
1096	+	}
1097	+	Thread.State s = thread.getState();
1098	+	if (s == expected)
1099	+	return;
1100	+	else if (s == Thread.State.TERMINATED)
1101	+	fail("Unexpected thread termination");
1102	+	}
1103	+	fail("timed out waiting for thread to enter thread state " + expected);
1104	+	}
1105	+
1106	+	/**
1107	+	* Checks that future.get times out, with the default timeout of
1108	+	* {@code timeoutMillis()}.
1109	+	*/
1110	+	void assertFutureTimesOut(Future future) {
1111	+	assertFutureTimesOut(future, timeoutMillis());
1112	+	}
1113	+
1114	+	/**
1115	+	* Checks that future.get times out, with the given millisecond timeout.
1116	+	*/
1117	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1118	+	long startTime = System.nanoTime();
1119	+	try {
1120	+	future.get(timeoutMillis, MILLISECONDS);
1121	+	shouldThrow();
1122	+	} catch (TimeoutException success) {
1123	+	} catch (Exception fail) {
1124	+	threadUnexpectedException(fail);
1125	+	} finally { future.cancel(true); }
1126	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1127	+	}
1128
1129		/**
1130		* Fails with message "should throw exception".
#	Line 470 | Line 1141 | public class JSR166TestCase extends Test
1141		}
1142
1143		/**
1144	+	* The maximum number of consecutive spurious wakeups we should
1145	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1146	+	*/
1147	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1148	+
1149	+	/**
1150		* The number of elements to place in collections, arrays, etc.
1151		*/
1152		public static final int SIZE = 20;
#	Line 494 | Line 1171 | public class JSR166TestCase extends Test
1171		public static final Integer m6  = new Integer(-6);
1172		public static final Integer m10 = new Integer(-10);
1173
497	–
1174		/**
1175		* Runs Runnable r with a security policy that permits precisely
1176		* the specified permissions.  If there is no current security
#	Line 506 | Line 1182 | public class JSR166TestCase extends Test
1182		SecurityManager sm = System.getSecurityManager();
1183		if (sm == null) {
1184		r.run();
1185	+	}
1186	+	runWithSecurityManagerWithPermissions(r, permissions);
1187	+	}
1188	+
1189	+	/**
1190	+	* Runs Runnable r with a security policy that permits precisely
1191	+	* the specified permissions.  If there is no current security
1192	+	* manager, a temporary one is set for the duration of the
1193	+	* Runnable.  We require that any security manager permit
1194	+	* getPolicy/setPolicy.
1195	+	*/
1196	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1197	+	Permission... permissions) {
1198	+	SecurityManager sm = System.getSecurityManager();
1199	+	if (sm == null) {
1200		Policy savedPolicy = Policy.getPolicy();
1201		try {
1202		Policy.setPolicy(permissivePolicy());
1203		System.setSecurityManager(new SecurityManager());
1204	<	runWithPermissions(r, permissions);
1204	>	runWithSecurityManagerWithPermissions(r, permissions);
1205		} finally {
1206		System.setSecurityManager(null);
1207		Policy.setPolicy(savedPolicy);
#	Line 558 | Line 1249 | public class JSR166TestCase extends Test
1249		return perms.implies(p);
1250		}
1251		public void refresh() {}
1252	+	public String toString() {
1253	+	List<Permission> ps = new ArrayList<>();
1254	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1255	+	ps.add(e.nextElement());
1256	+	return "AdjustablePolicy with permissions " + ps;
1257	+	}
1258		}
1259
1260		/**
#	Line 581 | Line 1278 | public class JSR166TestCase extends Test
1278
1279		/**
1280		* Sleeps until the given time has elapsed.
1281	<	* Throws AssertionFailedError if interrupted.
1281	>	* Throws AssertionError if interrupted.
1282		*/
1283	<	void sleep(long millis) {
1283	>	static void sleep(long millis) {
1284		try {
1285	<	Thread.sleep(millis);
1286	<	} catch (InterruptedException ie) {
1287	<	AssertionFailedError afe =
1288	<	new AssertionFailedError("Unexpected InterruptedException");
1289	<	afe.initCause(ie);
1290	<	throw afe;
1285	>	delay(millis);
1286	>	} catch (InterruptedException fail) {
1287	>	throw new AssertionError("Unexpected InterruptedException", fail);
1288	>	}
1289	>	}
1290	>
1291	>	/**
1292	>	* Spin-waits up to the specified number of milliseconds for the given
1293	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1294	>	*/
1295	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1296	>	long startTime = 0L;
1297	>	for (;;) {
1298	>	Thread.State s = thread.getState();
1299	>	if (s == Thread.State.BLOCKED ||
1300	>	s == Thread.State.WAITING ||
1301	>	s == Thread.State.TIMED_WAITING)
1302	>	return;
1303	>	else if (s == Thread.State.TERMINATED)
1304	>	fail("Unexpected thread termination");
1305	>	else if (startTime == 0L)
1306	>	startTime = System.nanoTime();
1307	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1308	>	threadAssertTrue(thread.isAlive());
1309	>	fail("timed out waiting for thread to enter wait state");
1310	>	}
1311	>	Thread.yield();
1312	>	}
1313	>	}
1314	>
1315	>	/**
1316	>	* Spin-waits up to the specified number of milliseconds for the given
1317	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1318	>	* and additionally satisfy the given condition.
1319	>	*/
1320	>	void waitForThreadToEnterWaitState(
1321	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1322	>	long startTime = 0L;
1323	>	for (;;) {
1324	>	Thread.State s = thread.getState();
1325	>	if (s == Thread.State.BLOCKED ||
1326	>	s == Thread.State.WAITING ||
1327	>	s == Thread.State.TIMED_WAITING) {
1328	>	try {
1329	>	if (waitingForGodot.call())
1330	>	return;
1331	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1332	>	}
1333	>	else if (s == Thread.State.TERMINATED)
1334	>	fail("Unexpected thread termination");
1335	>	else if (startTime == 0L)
1336	>	startTime = System.nanoTime();
1337	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1338	>	threadAssertTrue(thread.isAlive());
1339	>	fail("timed out waiting for thread to enter wait state");
1340	>	}
1341	>	Thread.yield();
1342		}
1343		}
1344
1345		/**
1346	<	* Sleeps until the timeout has elapsed, or interrupted.
1347	<	* Does <em>NOT</em> throw InterruptedException.
1346	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1347	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1348	>	*/
1349	>	void waitForThreadToEnterWaitState(Thread thread) {
1350	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1351	>	}
1352	>
1353	>	/**
1354	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1355	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1356	>	* and additionally satisfy the given condition.
1357	>	*/
1358	>	void waitForThreadToEnterWaitState(
1359	>	Thread thread, Callable<Boolean> waitingForGodot) {
1360	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1361	>	}
1362	>
1363	>	/**
1364	>	* Returns the number of milliseconds since time given by
1365	>	* startNanoTime, which must have been previously returned from a
1366	>	* call to {@link System#nanoTime()}.
1367	>	*/
1368	>	static long millisElapsedSince(long startNanoTime) {
1369	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1370	>	}
1371	>
1372	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1373	>	//         long startTime = System.nanoTime();
1374	>	//         try {
1375	>	//             r.run();
1376	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1377	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1378	>	//             throw new AssertionError("did not return promptly");
1379	>	//     }
1380	>
1381	>	//     void assertTerminatesPromptly(Runnable r) {
1382	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1383	>	//     }
1384	>
1385	>	/**
1386	>	* Checks that timed f.get() returns the expected value, and does not
1387	>	* wait for the timeout to elapse before returning.
1388		*/
1389	<	void sleepTillInterrupted(long timeoutMillis) {
1389	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1390	>	long startTime = System.nanoTime();
1391		try {
1392	<	Thread.sleep(timeoutMillis);
1393	<	} catch (InterruptedException wakeup) {}
1392	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1393	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1394	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1395	>	throw new AssertionError("timed get did not return promptly");
1396	>	}
1397	>
1398	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1399	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1400		}
1401
1402		/**
#	Line 622 | Line 1417 | public class JSR166TestCase extends Test
1417		void awaitTermination(Thread t, long timeoutMillis) {
1418		try {
1419		t.join(timeoutMillis);
1420	<	} catch (InterruptedException ie) {
1421	<	threadUnexpectedException(ie);
1420	>	} catch (InterruptedException fail) {
1421	>	threadUnexpectedException(fail);
1422		} finally {
1423	<	if (t.isAlive()) {
1423	>	if (t.getState() != Thread.State.TERMINATED) {
1424		t.interrupt();
1425	<	fail("Test timed out");
1425	>	threadFail("timed out waiting for thread to terminate");
1426		}
1427		}
1428		}
1429
1430	+	/**
1431	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1432	+	* terminate (using {@link Thread#join(long)}), else interrupts
1433	+	* the thread (in the hope that it may terminate later) and fails.
1434	+	*/
1435	+	void awaitTermination(Thread t) {
1436	+	awaitTermination(t, LONG_DELAY_MS);
1437	+	}
1438	+
1439		// Some convenient Runnable classes
1440
1441		public abstract class CheckedRunnable implements Runnable {
#	Line 640 | Line 1444 | public class JSR166TestCase extends Test
1444		public final void run() {
1445		try {
1446		realRun();
1447	<	} catch (Throwable t) {
1448	<	threadUnexpectedException(t);
645	<	}
646	<	}
647	<	}
648	<
649	<	public abstract class RunnableShouldThrow implements Runnable {
650	<	protected abstract void realRun() throws Throwable;
651	<
652	<	final Class<?> exceptionClass;
653	<
654	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
655	<	this.exceptionClass = exceptionClass;
656	<	}
657	<
658	<	public final void run() {
659	<	try {
660	<	realRun();
661	<	threadShouldThrow(exceptionClass.getSimpleName());
662	<	} catch (Throwable t) {
663	<	if (! exceptionClass.isInstance(t))
664	<	threadUnexpectedException(t);
1447	>	} catch (Throwable fail) {
1448	>	threadUnexpectedException(fail);
1449		}
1450		}
1451		}
#	Line 694 | Line 1478 | public class JSR166TestCase extends Test
1478		realRun();
1479		threadShouldThrow("InterruptedException");
1480		} catch (InterruptedException success) {
1481	<	} catch (Throwable t) {
1482	<	threadUnexpectedException(t);
1481	>	threadAssertFalse(Thread.interrupted());
1482	>	} catch (Throwable fail) {
1483	>	threadUnexpectedException(fail);
1484		}
1485		}
1486		}
#	Line 706 | Line 1491 | public class JSR166TestCase extends Test
1491		public final T call() {
1492		try {
1493		return realCall();
1494	<	} catch (Throwable t) {
1495	<	threadUnexpectedException(t);
1494	>	} catch (Throwable fail) {
1495	>	threadUnexpectedException(fail);
1496		return null;
1497		}
1498		}
#	Line 723 | Line 1508 | public class JSR166TestCase extends Test
1508		threadShouldThrow("InterruptedException");
1509		return result;
1510		} catch (InterruptedException success) {
1511	<	} catch (Throwable t) {
1512	<	threadUnexpectedException(t);
1511	>	threadAssertFalse(Thread.interrupted());
1512	>	} catch (Throwable fail) {
1513	>	threadUnexpectedException(fail);
1514		}
1515		return null;
1516		}
#	Line 741 | Line 1527 | public class JSR166TestCase extends Test
1527		public static final String TEST_STRING = "a test string";
1528
1529		public static class StringTask implements Callable<String> {
1530	<	public String call() { return TEST_STRING; }
1530	>	final String value;
1531	>	public StringTask() { this(TEST_STRING); }
1532	>	public StringTask(String value) { this.value = value; }
1533	>	public String call() { return value; }
1534		}
1535
1536		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1537		return new CheckedCallable<String>() {
1538	<	public String realCall() {
1538	>	protected String realCall() {
1539		try {
1540		latch.await();
1541		} catch (InterruptedException quittingTime) {}
#	Line 754 | Line 1543 | public class JSR166TestCase extends Test
1543		}};
1544		}
1545
1546	<	public static class NPETask implements Callable<String> {
1547	<	public String call() { throw new NullPointerException(); }
1548	<	}
1549	<
1550	<	public static class CallableOne implements Callable<Integer> {
762	<	public Integer call() { return one; }
1546	>	public Runnable countDowner(final CountDownLatch latch) {
1547	>	return new CheckedRunnable() {
1548	>	public void realRun() throws InterruptedException {
1549	>	latch.countDown();
1550	>	}};
1551		}
1552
1553	<	public class ShortRunnable extends CheckedRunnable {
1554	<	protected void realRun() throws Throwable {
1555	<	Thread.sleep(SHORT_DELAY_MS);
1553	>	class LatchAwaiter extends CheckedRunnable {
1554	>	static final int NEW = 0;
1555	>	static final int RUNNING = 1;
1556	>	static final int DONE = 2;
1557	>	final CountDownLatch latch;
1558	>	int state = NEW;
1559	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1560	>	public void realRun() throws InterruptedException {
1561	>	state = 1;
1562	>	await(latch);
1563	>	state = 2;
1564		}
1565		}
1566
1567	<	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1568	<	protected void realRun() throws InterruptedException {
773	<	Thread.sleep(SHORT_DELAY_MS);
774	<	}
1567	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1568	>	return new LatchAwaiter(latch);
1569		}
1570
1571	<	public class SmallRunnable extends CheckedRunnable {
1572	<	protected void realRun() throws Throwable {
1573	<	Thread.sleep(SMALL_DELAY_MS);
1571	>	public void await(CountDownLatch latch, long timeoutMillis) {
1572	>	try {
1573	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1574	>	fail("timed out waiting for CountDownLatch for "
1575	>	+ (timeoutMillis/1000) + " sec");
1576	>	} catch (Throwable fail) {
1577	>	threadUnexpectedException(fail);
1578		}
1579		}
1580
1581	<	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1582	<	protected void realRun() {
785	<	try {
786	<	Thread.sleep(SMALL_DELAY_MS);
787	<	} catch (InterruptedException ok) {}
788	<	}
1581	>	public void await(CountDownLatch latch) {
1582	>	await(latch, LONG_DELAY_MS);
1583		}
1584
1585	<	public class SmallCallable extends CheckedCallable {
1586	<	protected Object realCall() throws InterruptedException {
1587	<	Thread.sleep(SMALL_DELAY_MS);
1588	<	return Boolean.TRUE;
1585	>	public void await(Semaphore semaphore) {
1586	>	try {
1587	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1588	>	fail("timed out waiting for Semaphore for "
1589	>	+ (LONG_DELAY_MS/1000) + " sec");
1590	>	} catch (Throwable fail) {
1591	>	threadUnexpectedException(fail);
1592		}
1593		}
1594
1595	<	public class MediumRunnable extends CheckedRunnable {
1596	<	protected void realRun() throws Throwable {
1597	<	Thread.sleep(MEDIUM_DELAY_MS);
1595	>	public void await(CyclicBarrier barrier) {
1596	>	try {
1597	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1598	>	} catch (Throwable fail) {
1599	>	threadUnexpectedException(fail);
1600		}
1601		}
1602
1603	<	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1604	<	protected void realRun() throws InterruptedException {
1605	<	Thread.sleep(MEDIUM_DELAY_MS);
1606	<	}
1603	>	//     /**
1604	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1605	>	//      */
1606	>	//     public void await(AtomicBoolean flag) {
1607	>	//         await(flag, LONG_DELAY_MS);
1608	>	//     }
1609	>
1610	>	//     /**
1611	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1612	>	//      */
1613	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1614	>	//         long startTime = System.nanoTime();
1615	>	//         while (!flag.get()) {
1616	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1617	>	//                 throw new AssertionError("timed out");
1618	>	//             Thread.yield();
1619	>	//         }
1620	>	//     }
1621	>
1622	>	public static class NPETask implements Callable<String> {
1623	>	public String call() { throw new NullPointerException(); }
1624		}
1625
1626	<	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1626	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1627		protected void realRun() {
1628		try {
1629	<	Thread.sleep(MEDIUM_DELAY_MS);
1629	>	delay(SMALL_DELAY_MS);
1630		} catch (InterruptedException ok) {}
1631		}
1632		}
1633
1634	<	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1635	<	protected void realRun() {
1636	<	try {
1637	<	Thread.sleep(LONG_DELAY_MS);
1638	<	} catch (InterruptedException ok) {}
1639	<	}
1634	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1635	>	return new CheckedRunnable() {
1636	>	protected void realRun() {
1637	>	try {
1638	>	delay(timeoutMillis);
1639	>	} catch (InterruptedException ok) {}
1640	>	}};
1641		}
1642
1643		/**
#	Line 836 | Line 1653 | public class JSR166TestCase extends Test
1653		boolean isDone();
1654		}
1655
839	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
840	–	return new TrackedRunnable() {
841	–	private volatile boolean done = false;
842	–	public boolean isDone() { return done; }
843	–	public void run() {
844	–	try {
845	–	Thread.sleep(timeoutMillis);
846	–	done = true;
847	–	} catch (InterruptedException ok) {}
848	–	}
849	–	};
850	–	}
851	–
852	–	public static class TrackedShortRunnable implements Runnable {
853	–	public volatile boolean done = false;
854	–	public void run() {
855	–	try {
856	–	Thread.sleep(SHORT_DELAY_MS);
857	–	done = true;
858	–	} catch (InterruptedException ok) {}
859	–	}
860	–	}
861	–
862	–	public static class TrackedSmallRunnable implements Runnable {
863	–	public volatile boolean done = false;
864	–	public void run() {
865	–	try {
866	–	Thread.sleep(SMALL_DELAY_MS);
867	–	done = true;
868	–	} catch (InterruptedException ok) {}
869	–	}
870	–	}
871	–
872	–	public static class TrackedMediumRunnable implements Runnable {
873	–	public volatile boolean done = false;
874	–	public void run() {
875	–	try {
876	–	Thread.sleep(MEDIUM_DELAY_MS);
877	–	done = true;
878	–	} catch (InterruptedException ok) {}
879	–	}
880	–	}
881	–
882	–	public static class TrackedLongRunnable implements Runnable {
883	–	public volatile boolean done = false;
884	–	public void run() {
885	–	try {
886	–	Thread.sleep(LONG_DELAY_MS);
887	–	done = true;
888	–	} catch (InterruptedException ok) {}
889	–	}
890	–	}
891	–
1656		public static class TrackedNoOpRunnable implements Runnable {
1657		public volatile boolean done = false;
1658		public void run() {
#	Line 896 | Line 1660 | public class JSR166TestCase extends Test
1660		}
1661		}
1662
899	–	public static class TrackedCallable implements Callable {
900	–	public volatile boolean done = false;
901	–	public Object call() {
902	–	try {
903	–	Thread.sleep(SMALL_DELAY_MS);
904	–	done = true;
905	–	} catch (InterruptedException ok) {}
906	–	return Boolean.TRUE;
907	–	}
908	–	}
909	–
1663		/**
1664		* Analog of CheckedRunnable for RecursiveAction
1665		*/
1666		public abstract class CheckedRecursiveAction extends RecursiveAction {
1667		protected abstract void realCompute() throws Throwable;
1668
1669	<	public final void compute() {
1669	>	@Override protected final void compute() {
1670		try {
1671		realCompute();
1672	<	} catch (Throwable t) {
1673	<	threadUnexpectedException(t);
1672	>	} catch (Throwable fail) {
1673	>	threadUnexpectedException(fail);
1674		}
1675		}
1676		}
#	Line 928 | Line 1681 | public class JSR166TestCase extends Test
1681		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1682		protected abstract T realCompute() throws Throwable;
1683
1684	<	public final T compute() {
1684	>	@Override protected final T compute() {
1685		try {
1686		return realCompute();
1687	<	} catch (Throwable t) {
1688	<	threadUnexpectedException(t);
1687	>	} catch (Throwable fail) {
1688	>	threadUnexpectedException(fail);
1689		return null;
1690		}
1691		}
#	Line 947 | Line 1700 | public class JSR166TestCase extends Test
1700		}
1701
1702		/**
1703	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1704	<	* of throwing checked exceptions.
1703	>	* A CyclicBarrier that uses timed await and fails with
1704	>	* AssertionErrors instead of throwing checked exceptions.
1705		*/
1706	<	public class CheckedBarrier extends CyclicBarrier {
1706	>	public static class CheckedBarrier extends CyclicBarrier {
1707		public CheckedBarrier(int parties) { super(parties); }
1708
1709		public int await() {
1710		try {
1711	<	return super.await();
1712	<	} catch (Exception e) {
1713	<	AssertionFailedError afe =
1714	<	new AssertionFailedError("Unexpected exception: " + e);
1715	<	afe.initCause(e);
1716	<	throw afe;
1711	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1712	>	} catch (TimeoutException timedOut) {
1713	>	throw new AssertionError("timed out");
1714	>	} catch (Exception fail) {
1715	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1716	>	}
1717	>	}
1718	>	}
1719	>
1720	>	void checkEmpty(BlockingQueue q) {
1721	>	try {
1722	>	assertTrue(q.isEmpty());
1723	>	assertEquals(0, q.size());
1724	>	assertNull(q.peek());
1725	>	assertNull(q.poll());
1726	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1727	>	assertEquals(q.toString(), "[]");
1728	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1729	>	assertFalse(q.iterator().hasNext());
1730	>	try {
1731	>	q.element();
1732	>	shouldThrow();
1733	>	} catch (NoSuchElementException success) {}
1734	>	try {
1735	>	q.iterator().next();
1736	>	shouldThrow();
1737	>	} catch (NoSuchElementException success) {}
1738	>	try {
1739	>	q.remove();
1740	>	shouldThrow();
1741	>	} catch (NoSuchElementException success) {}
1742	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1743	>	}
1744	>
1745	>	void assertSerialEquals(Object x, Object y) {
1746	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1747	>	}
1748	>
1749	>	void assertNotSerialEquals(Object x, Object y) {
1750	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1751	>	}
1752	>
1753	>	byte[] serialBytes(Object o) {
1754	>	try {
1755	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1756	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1757	>	oos.writeObject(o);
1758	>	oos.flush();
1759	>	oos.close();
1760	>	return bos.toByteArray();
1761	>	} catch (Throwable fail) {
1762	>	threadUnexpectedException(fail);
1763	>	return new byte[0];
1764	>	}
1765	>	}
1766	>
1767	>	void assertImmutable(final Object o) {
1768	>	if (o instanceof Collection) {
1769	>	assertThrows(
1770	>	UnsupportedOperationException.class,
1771	>	new Runnable() { public void run() {
1772	>	((Collection) o).add(null);}});
1773	>	}
1774	>	}
1775	>
1776	>	@SuppressWarnings("unchecked")
1777	>	<T> T serialClone(T o) {
1778	>	try {
1779	>	ObjectInputStream ois = new ObjectInputStream
1780	>	(new ByteArrayInputStream(serialBytes(o)));
1781	>	T clone = (T) ois.readObject();
1782	>	if (o == clone) assertImmutable(o);
1783	>	assertSame(o.getClass(), clone.getClass());
1784	>	return clone;
1785	>	} catch (Throwable fail) {
1786	>	threadUnexpectedException(fail);
1787	>	return null;
1788	>	}
1789	>	}
1790	>
1791	>	/**
1792	>	* A version of serialClone that leaves error handling (for
1793	>	* e.g. NotSerializableException) up to the caller.
1794	>	*/
1795	>	@SuppressWarnings("unchecked")
1796	>	<T> T serialClonePossiblyFailing(T o)
1797	>	throws ReflectiveOperationException, java.io.IOException {
1798	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1799	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1800	>	oos.writeObject(o);
1801	>	oos.flush();
1802	>	oos.close();
1803	>	ObjectInputStream ois = new ObjectInputStream
1804	>	(new ByteArrayInputStream(bos.toByteArray()));
1805	>	T clone = (T) ois.readObject();
1806	>	if (o == clone) assertImmutable(o);
1807	>	assertSame(o.getClass(), clone.getClass());
1808	>	return clone;
1809	>	}
1810	>
1811	>	/**
1812	>	* If o implements Cloneable and has a public clone method,
1813	>	* returns a clone of o, else null.
1814	>	*/
1815	>	@SuppressWarnings("unchecked")
1816	>	<T> T cloneableClone(T o) {
1817	>	if (!(o instanceof Cloneable)) return null;
1818	>	final T clone;
1819	>	try {
1820	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1821	>	} catch (NoSuchMethodException ok) {
1822	>	return null;
1823	>	} catch (ReflectiveOperationException unexpected) {
1824	>	throw new Error(unexpected);
1825	>	}
1826	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1827	>	assertSame(o.getClass(), clone.getClass());
1828	>	return clone;
1829	>	}
1830	>
1831	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1832	>	Runnable... throwingActions) {
1833	>	for (Runnable throwingAction : throwingActions) {
1834	>	boolean threw = false;
1835	>	try { throwingAction.run(); }
1836	>	catch (Throwable t) {
1837	>	threw = true;
1838	>	if (!expectedExceptionClass.isInstance(t))
1839	>	throw new AssertionError(
1840	>	"Expected " + expectedExceptionClass.getName() +
1841	>	", got " + t.getClass().getName(),
1842	>	t);
1843	>	}
1844	>	if (!threw)
1845	>	shouldThrow(expectedExceptionClass.getName());
1846	>	}
1847	>	}
1848	>
1849	>	public void assertIteratorExhausted(Iterator<?> it) {
1850	>	try {
1851	>	it.next();
1852	>	shouldThrow();
1853	>	} catch (NoSuchElementException success) {}
1854	>	assertFalse(it.hasNext());
1855	>	}
1856	>
1857	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1858	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1859	>	}
1860	>
1861	>	public Runnable runnableThrowing(final RuntimeException ex) {
1862	>	return new Runnable() { public void run() { throw ex; }};
1863	>	}
1864	>
1865	>	/** A reusable thread pool to be shared by tests. */
1866	>	static final ExecutorService cachedThreadPool =
1867	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1868	>	1000L, MILLISECONDS,
1869	>	new SynchronousQueue<Runnable>());
1870	>
1871	>	static <T> void shuffle(T[] array) {
1872	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1873	>	}
1874	>
1875	>	/**
1876	>	* Returns the same String as would be returned by {@link
1877	>	* Object#toString}, whether or not the given object's class
1878	>	* overrides toString().
1879	>	*
1880	>	* @see System#identityHashCode
1881	>	*/
1882	>	static String identityString(Object x) {
1883	>	return x.getClass().getName()
1884	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1885	>	}
1886	>
1887	>	// --- Shared assertions for Executor tests ---
1888	>
1889	>	/**
1890	>	* Returns maximum number of tasks that can be submitted to given
1891	>	* pool (with bounded queue) before saturation (when submission
1892	>	* throws RejectedExecutionException).
1893	>	*/
1894	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1895	>	BlockingQueue<Runnable> q = pool.getQueue();
1896	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1897	>	}
1898	>
1899	>	@SuppressWarnings("FutureReturnValueIgnored")
1900	>	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1901	>	try {
1902	>	e.execute((Runnable) null);
1903	>	shouldThrow();
1904	>	} catch (NullPointerException success) {}
1905	>
1906	>	if (! (e instanceof ExecutorService)) return;
1907	>	ExecutorService es = (ExecutorService) e;
1908	>	try {
1909	>	es.submit((Runnable) null);
1910	>	shouldThrow();
1911	>	} catch (NullPointerException success) {}
1912	>	try {
1913	>	es.submit((Runnable) null, Boolean.TRUE);
1914	>	shouldThrow();
1915	>	} catch (NullPointerException success) {}
1916	>	try {
1917	>	es.submit((Callable) null);
1918	>	shouldThrow();
1919	>	} catch (NullPointerException success) {}
1920	>
1921	>	if (! (e instanceof ScheduledExecutorService)) return;
1922	>	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1923	>	try {
1924	>	ses.schedule((Runnable) null,
1925	>	randomTimeout(), randomTimeUnit());
1926	>	shouldThrow();
1927	>	} catch (NullPointerException success) {}
1928	>	try {
1929	>	ses.schedule((Callable) null,
1930	>	randomTimeout(), randomTimeUnit());
1931	>	shouldThrow();
1932	>	} catch (NullPointerException success) {}
1933	>	try {
1934	>	ses.scheduleAtFixedRate((Runnable) null,
1935	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1936	>	shouldThrow();
1937	>	} catch (NullPointerException success) {}
1938	>	try {
1939	>	ses.scheduleWithFixedDelay((Runnable) null,
1940	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1941	>	shouldThrow();
1942	>	} catch (NullPointerException success) {}
1943	>	}
1944	>
1945	>	void setRejectedExecutionHandler(
1946	>	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1947	>	p.setRejectedExecutionHandler(handler);
1948	>	assertSame(handler, p.getRejectedExecutionHandler());
1949	>	}
1950	>
1951	>	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1952	>	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1953	>	final long savedTaskCount = p.getTaskCount();
1954	>	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1955	>	final int savedQueueSize = p.getQueue().size();
1956	>	final boolean stock = (p.getClass().getClassLoader() == null);
1957	>
1958	>	Runnable r = () -> {};
1959	>	Callable<Boolean> c = () -> Boolean.TRUE;
1960	>
1961	>	class Recorder implements RejectedExecutionHandler {
1962	>	public volatile Runnable r = null;
1963	>	public volatile ThreadPoolExecutor p = null;
1964	>	public void reset() { r = null; p = null; }
1965	>	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1966	>	assertNull(this.r);
1967	>	assertNull(this.p);
1968	>	this.r = r;
1969	>	this.p = p;
1970		}
1971		}
1972	+
1973	+	// check custom handler is invoked exactly once per task
1974	+	Recorder recorder = new Recorder();
1975	+	setRejectedExecutionHandler(p, recorder);
1976	+	for (int i = 2; i--> 0; ) {
1977	+	recorder.reset();
1978	+	p.execute(r);
1979	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
1980	+	assertSame(r, recorder.r);
1981	+	assertSame(p, recorder.p);
1982	+
1983	+	recorder.reset();
1984	+	assertFalse(p.submit(r).isDone());
1985	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1986	+	assertSame(p, recorder.p);
1987	+
1988	+	recorder.reset();
1989	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1990	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1991	+	assertSame(p, recorder.p);
1992	+
1993	+	recorder.reset();
1994	+	assertFalse(p.submit(c).isDone());
1995	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1996	+	assertSame(p, recorder.p);
1997	+
1998	+	if (p instanceof ScheduledExecutorService) {
1999	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2000	+	ScheduledFuture<?> future;
2001	+
2002	+	recorder.reset();
2003	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2004	+	assertFalse(future.isDone());
2005	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2006	+	assertSame(p, recorder.p);
2007	+
2008	+	recorder.reset();
2009	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2010	+	assertFalse(future.isDone());
2011	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2012	+	assertSame(p, recorder.p);
2013	+
2014	+	recorder.reset();
2015	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2016	+	assertFalse(future.isDone());
2017	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2018	+	assertSame(p, recorder.p);
2019	+
2020	+	recorder.reset();
2021	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2022	+	assertFalse(future.isDone());
2023	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2024	+	assertSame(p, recorder.p);
2025	+	}
2026	+	}
2027	+
2028	+	// Checking our custom handler above should be sufficient, but
2029	+	// we add some integration tests of standard handlers.
2030	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2031	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2032	+
2033	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2034	+	try {
2035	+	p.execute(setThread);
2036	+	shouldThrow();
2037	+	} catch (RejectedExecutionException success) {}
2038	+	assertNull(thread.get());
2039	+
2040	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2041	+	p.execute(setThread);
2042	+	assertNull(thread.get());
2043	+
2044	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2045	+	p.execute(setThread);
2046	+	if (p.isShutdown())
2047	+	assertNull(thread.get());
2048	+	else
2049	+	assertSame(Thread.currentThread(), thread.get());
2050	+
2051	+	setRejectedExecutionHandler(p, savedHandler);
2052	+
2053	+	// check that pool was not perturbed by handlers
2054	+	assertEquals(savedTaskCount, p.getTaskCount());
2055	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2056	+	assertEquals(savedQueueSize, p.getQueue().size());
2057	+	}
2058	+
2059	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2060	+	assertEquals(x, y);
2061	+	assertEquals(y, x);
2062	+	assertEquals(x.isEmpty(), y.isEmpty());
2063	+	assertEquals(x.size(), y.size());
2064	+	if (x instanceof List) {
2065	+	assertEquals(x.toString(), y.toString());
2066	+	}
2067	+	if (x instanceof List || x instanceof Set) {
2068	+	assertEquals(x.hashCode(), y.hashCode());
2069	+	}
2070	+	if (x instanceof List || x instanceof Deque) {
2071	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2072	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2073	+	y.toArray(new Object[0])));
2074	+	}
2075		}
2076
2077	+	/**
2078	+	* A weaker form of assertCollectionsEquals which does not insist
2079	+	* that the two collections satisfy Object#equals(Object), since
2080	+	* they may use identity semantics as Deques do.
2081	+	*/
2082	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2083	+	if (x instanceof List || x instanceof Set)
2084	+	assertCollectionsEquals(x, y);
2085	+	else {
2086	+	assertEquals(x.isEmpty(), y.isEmpty());
2087	+	assertEquals(x.size(), y.size());
2088	+	assertEquals(new HashSet(x), new HashSet(y));
2089	+	if (x instanceof Deque) {
2090	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2091	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2092	+	y.toArray(new Object[0])));
2093	+	}
2094	+	}
2095	+	}
2096		}

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