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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.73 by jsr166, Mon Nov 29 07:39:53 2010 UTC vs.
Revision 1.251 by jsr166, Wed Dec 12 16:59:55 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.Arrays;
12	<	import java.util.NoSuchElementException;
13	<	import java.util.PropertyPermission;
14	<	import java.util.concurrent.*;
15	<	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 21 | 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 32 | Line 117 | import java.security.SecurityPermission;
117		*
118		* <ol>
119		*
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>
120	>	* <li>All code not running in the main test thread (manually spawned threads
121	>	* or the common fork join pool) must be checked for failure (and completion!).
122	>	* Mechanisms that can be used to ensure this are:
123	>	*   <ol>
124	>	*   <li>Signalling via a synchronizer like AtomicInteger or CountDownLatch
125	>	*    that the task completed normally, which is checked before returning from
126	>	*    the test method in the main thread.
127	>	*   <li>Using the forms {@link #threadFail}, {@link #threadAssertTrue},
128	>	*    or {@link #threadAssertNull}, (not {@code fail}, {@code assertTrue}, etc.)
129	>	*    Only the most typically used JUnit assertion methods are defined
130	>	*    this way, but enough to live with.
131	>	*   <li>Recording failure explicitly using {@link #threadUnexpectedException}
132	>	*    or {@link #threadRecordFailure}.
133	>	*   <li>Using a wrapper like CheckedRunnable that uses one the mechanisms above.
134	>	*   </ol>
135		*
136	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
136	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
137		* to invoke {@code super.setUp} and {@code super.tearDown} within
138		* them. These methods are used to clear and check for thread
139	<	* assertion failures.</li>
139	>	* assertion failures.
140		*
141		* <li>All delays and timeouts must use one of the constants {@code
142		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 54 | Line 147 | import java.security.SecurityPermission;
147		* is always discriminable as larger than SHORT and smaller than
148		* MEDIUM.  And so on. These constants are set to conservative values,
149		* but even so, if there is ever any doubt, they can all be increased
150	<	* in one spot to rerun tests on slower platforms.</li>
150	>	* in one spot to rerun tests on slower platforms.
151		*
152	<	* <li> All threads generated must be joined inside each test case
152	>	* <li>All threads generated must be joined inside each test case
153		* method (or {@code fail} to do so) before returning from the
154		* method. The {@code joinPool} method can be used to do this when
155	<	* using Executors.</li>
155	>	* using Executors.
156		*
157		* </ol>
158		*
159	<	* <p> <b>Other notes</b>
159	>	* <p><b>Other notes</b>
160		* <ul>
161		*
162	<	* <li> Usually, there is one testcase method per JSR166 method
162	>	* <li>Usually, there is one testcase method per JSR166 method
163		* covering "normal" operation, and then as many exception-testing
164		* methods as there are exceptions the method can throw. Sometimes
165		* there are multiple tests per JSR166 method when the different
166		* "normal" behaviors differ significantly. And sometimes testcases
167	<	* cover multiple methods when they cannot be tested in
75	<	* isolation.</li>
167	>	* cover multiple methods when they cannot be tested in isolation.
168		*
169	<	* <li> The documentation style for testcases is to provide as javadoc
169	>	* <li>The documentation style for testcases is to provide as javadoc
170		* a simple sentence or two describing the property that the testcase
171		* method purports to test. The javadocs do not say anything about how
172	<	* the property is tested. To find out, read the code.</li>
172	>	* the property is tested. To find out, read the code.
173		*
174	<	* <li> These tests are "conformance tests", and do not attempt to
174	>	* <li>These tests are "conformance tests", and do not attempt to
175		* test throughput, latency, scalability or other performance factors
176		* (see the separate "jtreg" tests for a set intended to check these
177		* for the most central aspects of functionality.) So, most tests use
178		* the smallest sensible numbers of threads, collection sizes, etc
179	<	* needed to check basic conformance.</li>
179	>	* needed to check basic conformance.
180		*
181		* <li>The test classes currently do not declare inclusion in
182		* any particular package to simplify things for people integrating
183	<	* them in TCK test suites.</li>
183	>	* them in TCK test suites.
184		*
185	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
186	<	* runs all JSR166 unit tests.</li>
185	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
186	>	* runs all JSR166 unit tests.
187		*
188		* </ul>
189		*/
#	Line 103 | Line 195 | public class JSR166TestCase extends Test
195		Boolean.getBoolean("jsr166.expensiveTests");
196
197		/**
198	+	* If true, also run tests that are not part of the official tck
199	+	* because they test unspecified implementation details.
200	+	*/
201	+	protected static final boolean testImplementationDetails =
202	+	Boolean.getBoolean("jsr166.testImplementationDetails");
203	+
204	+	/**
205		* If true, report on stdout all "slow" tests, that is, ones that
206		* take more than profileThreshold milliseconds to execute.
207		*/
#	Line 116 | Line 215 | public class JSR166TestCase extends Test
215		private static final long profileThreshold =
216		Long.getLong("jsr166.profileThreshold", 100);
217
218	+	/**
219	+	* The number of repetitions per test (for tickling rare bugs).
220	+	*/
221	+	private static final int runsPerTest =
222	+	Integer.getInteger("jsr166.runsPerTest", 1);
223	+
224	+	/**
225	+	* The number of repetitions of the test suite (for finding leaks?).
226	+	*/
227	+	private static final int suiteRuns =
228	+	Integer.getInteger("jsr166.suiteRuns", 1);
229	+
230	+	/**
231	+	* Returns the value of the system property, or NaN if not defined.
232	+	*/
233	+	private static float systemPropertyValue(String name) {
234	+	String floatString = System.getProperty(name);
235	+	if (floatString == null)
236	+	return Float.NaN;
237	+	try {
238	+	return Float.parseFloat(floatString);
239	+	} catch (NumberFormatException ex) {
240	+	throw new IllegalArgumentException(
241	+	String.format("Bad float value in system property %s=%s",
242	+	name, floatString));
243	+	}
244	+	}
245	+
246	+	/**
247	+	* The scaling factor to apply to standard delays used in tests.
248	+	* May be initialized from any of:
249	+	* - the "jsr166.delay.factor" system property
250	+	* - the "test.timeout.factor" system property (as used by jtreg)
251	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
252	+	* - hard-coded fuzz factor when using a known slowpoke VM
253	+	*/
254	+	private static final float delayFactor = delayFactor();
255	+
256	+	private static float delayFactor() {
257	+	float x;
258	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
259	+	return x;
260	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
261	+	return x;
262	+	String prop = System.getProperty("java.vm.version");
263	+	if (prop != null && prop.matches(".*debug.*"))
264	+	return 4.0f; // How much slower is fastdebug than product?!
265	+	return 1.0f;
266	+	}
267	+
268	+	public JSR166TestCase() { super(); }
269	+	public JSR166TestCase(String name) { super(name); }
270	+
271	+	/**
272	+	* A filter for tests to run, matching strings of the form
273	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
274	+	* Usefully combined with jsr166.runsPerTest.
275	+	*/
276	+	private static final Pattern methodFilter = methodFilter();
277	+
278	+	private static Pattern methodFilter() {
279	+	String regex = System.getProperty("jsr166.methodFilter");
280	+	return (regex == null) ? null : Pattern.compile(regex);
281	+	}
282	+
283	+	// Instrumentation to debug very rare, but very annoying hung test runs.
284	+	static volatile TestCase currentTestCase;
285	+	// static volatile int currentRun = 0;
286	+	static {
287	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
288	+	// Avoid spurious reports with enormous runsPerTest.
289	+	// A single test case run should never take more than 1 second.
290	+	// But let's cap it at the high end too ...
291	+	final int timeoutMinutes =
292	+	Math.min(15, Math.max(runsPerTest / 60, 1));
293	+	for (TestCase lastTestCase = currentTestCase;;) {
294	+	try { MINUTES.sleep(timeoutMinutes); }
295	+	catch (InterruptedException unexpected) { break; }
296	+	if (lastTestCase == currentTestCase) {
297	+	System.err.printf(
298	+	"Looks like we're stuck running test: %s%n",
299	+	lastTestCase);
300	+	//                     System.err.printf(
301	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
302	+	//                         lastTestCase, currentRun, runsPerTest);
303	+	//                     System.err.println("availableProcessors=" +
304	+	//                         Runtime.getRuntime().availableProcessors());
305	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
306	+	dumpTestThreads();
307	+	// one stack dump is probably enough; more would be spam
308	+	break;
309	+	}
310	+	lastTestCase = currentTestCase;
311	+	}}};
312	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
313	+	thread.setDaemon(true);
314	+	thread.start();
315	+	}
316	+
317	+	//     public static String cpuModel() {
318	+	//         try {
319	+	//             java.util.regex.Matcher matcher
320	+	//               = Pattern.compile("model name\\s*: (.*)")
321	+	//                 .matcher(new String(
322	+	//                     java.nio.file.Files.readAllBytes(
323	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
324	+	//             matcher.find();
325	+	//             return matcher.group(1);
326	+	//         } catch (Exception ex) { return null; }
327	+	//     }
328	+
329	+	public void runBare() throws Throwable {
330	+	currentTestCase = this;
331	+	if (methodFilter == null
332	+	|| methodFilter.matcher(toString()).find())
333	+	super.runBare();
334	+	}
335	+
336		protected void runTest() throws Throwable {
337	<	if (profileTests)
338	<	runTestProfiled();
339	<	else
340	<	super.runTest();
337	>	for (int i = 0; i < runsPerTest; i++) {
338	>	// currentRun = i;
339	>	if (profileTests)
340	>	runTestProfiled();
341	>	else
342	>	super.runTest();
343	>	}
344		}
345
346		protected void runTestProfiled() throws Throwable {
347	<	long t0 = System.nanoTime();
348	<	try {
347	>	for (int i = 0; i < 2; i++) {
348	>	long startTime = System.nanoTime();
349		super.runTest();
350	<	} finally {
351	<	long elapsedMillis =
352	<	(System.nanoTime() - t0) / (1000L * 1000L);
353	<	if (elapsedMillis >= profileThreshold)
350	>	long elapsedMillis = millisElapsedSince(startTime);
351	>	if (elapsedMillis < profileThreshold)
352	>	break;
353	>	// Never report first run of any test; treat it as a
354	>	// warmup run, notably to trigger all needed classloading,
355	>	if (i > 0)
356		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
357		}
358		}
359
360		/**
361	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
361	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
362		*/
363		public static void main(String[] args) {
364	+	main(suite(), args);
365	+	}
366	+
367	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
368	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
369	+	long runTime;
370	+	public void startTest(Test test) {}
371	+	protected void printHeader(long runTime) {
372	+	this.runTime = runTime; // defer printing for later
373	+	}
374	+	protected void printFooter(TestResult result) {
375	+	if (result.wasSuccessful()) {
376	+	getWriter().println("OK (" + result.runCount() + " tests)"
377	+	+ "  Time: " + elapsedTimeAsString(runTime));
378	+	} else {
379	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
380	+	super.printFooter(result);
381	+	}
382	+	}
383	+	}
384	+
385	+	/**
386	+	* Returns a TestRunner that doesn't bother with unnecessary
387	+	* fluff, like printing a "." for each test case.
388	+	*/
389	+	static junit.textui.TestRunner newPithyTestRunner() {
390	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
391	+	runner.setPrinter(new PithyResultPrinter(System.out));
392	+	return runner;
393	+	}
394	+
395	+	/**
396	+	* Runs all unit tests in the given test suite.
397	+	* Actual behavior influenced by jsr166.* system properties.
398	+	*/
399	+	static void main(Test suite, String[] args) {
400		if (useSecurityManager) {
401		System.err.println("Setting a permissive security manager");
402		Policy.setPolicy(permissivePolicy());
403		System.setSecurityManager(new SecurityManager());
404		}
405	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
406	<
407	<	Test s = suite();
408	<	for (int i = 0; i < iters; ++i) {
151	<	junit.textui.TestRunner.run(s);
405	>	for (int i = 0; i < suiteRuns; i++) {
406	>	TestResult result = newPithyTestRunner().doRun(suite);
407	>	if (!result.wasSuccessful())
408	>	System.exit(1);
409		System.gc();
410		System.runFinalization();
411		}
155	–	System.exit(0);
412		}
413
414		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 168 | Line 424 | public class JSR166TestCase extends Test
424		return suite;
425		}
426
427	+	public static void addNamedTestClasses(TestSuite suite,
428	+	String... testClassNames) {
429	+	for (String testClassName : testClassNames) {
430	+	try {
431	+	Class<?> testClass = Class.forName(testClassName);
432	+	Method m = testClass.getDeclaredMethod("suite");
433	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
434	+	} catch (ReflectiveOperationException e) {
435	+	throw new AssertionError("Missing test class", e);
436	+	}
437	+	}
438	+	}
439	+
440	+	public static final double JAVA_CLASS_VERSION;
441	+	public static final String JAVA_SPECIFICATION_VERSION;
442	+	static {
443	+	try {
444	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
445	+	new java.security.PrivilegedAction<Double>() {
446	+	public Double run() {
447	+	return Double.valueOf(System.getProperty("java.class.version"));}});
448	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
449	+	new java.security.PrivilegedAction<String>() {
450	+	public String run() {
451	+	return System.getProperty("java.specification.version");}});
452	+	} catch (Throwable t) {
453	+	throw new Error(t);
454	+	}
455	+	}
456	+
457	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
458	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
459	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
460	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
461	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
462	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
463	+
464		/**
465		* Collects all JSR166 unit tests as one suite.
466		*/
467		public static Test suite() {
468	<	return newTestSuite(
468	>	// Java7+ test classes
469	>	TestSuite suite = newTestSuite(
470		ForkJoinPoolTest.suite(),
471		ForkJoinTaskTest.suite(),
472		RecursiveActionTest.suite(),
#	Line 186 | Line 480 | public class JSR166TestCase extends Test
480		AbstractQueuedLongSynchronizerTest.suite(),
481		ArrayBlockingQueueTest.suite(),
482		ArrayDequeTest.suite(),
483	+	ArrayListTest.suite(),
484		AtomicBooleanTest.suite(),
485		AtomicIntegerArrayTest.suite(),
486		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 208 | Line 503 | public class JSR166TestCase extends Test
503		CopyOnWriteArrayListTest.suite(),
504		CopyOnWriteArraySetTest.suite(),
505		CountDownLatchTest.suite(),
506	+	CountedCompleterTest.suite(),
507		CyclicBarrierTest.suite(),
508		DelayQueueTest.suite(),
509		EntryTest.suite(),
#	Line 236 | Line 532 | public class JSR166TestCase extends Test
532		TreeMapTest.suite(),
533		TreeSetTest.suite(),
534		TreeSubMapTest.suite(),
535	<	TreeSubSetTest.suite());
535	>	TreeSubSetTest.suite(),
536	>	VectorTest.suite());
537	>
538	>	// Java8+ test classes
539	>	if (atLeastJava8()) {
540	>	String[] java8TestClassNames = {
541	>	"ArrayDeque8Test",
542	>	"Atomic8Test",
543	>	"CompletableFutureTest",
544	>	"ConcurrentHashMap8Test",
545	>	"CountedCompleter8Test",
546	>	"DoubleAccumulatorTest",
547	>	"DoubleAdderTest",
548	>	"ForkJoinPool8Test",
549	>	"ForkJoinTask8Test",
550	>	"HashMapTest",
551	>	"LinkedBlockingDeque8Test",
552	>	"LinkedBlockingQueue8Test",
553	>	"LinkedHashMapTest",
554	>	"LongAccumulatorTest",
555	>	"LongAdderTest",
556	>	"SplittableRandomTest",
557	>	"StampedLockTest",
558	>	"SubmissionPublisherTest",
559	>	"ThreadLocalRandom8Test",
560	>	"TimeUnit8Test",
561	>	};
562	>	addNamedTestClasses(suite, java8TestClassNames);
563	>	}
564	>
565	>	// Java9+ test classes
566	>	if (atLeastJava9()) {
567	>	String[] java9TestClassNames = {
568	>	"AtomicBoolean9Test",
569	>	"AtomicInteger9Test",
570	>	"AtomicIntegerArray9Test",
571	>	"AtomicLong9Test",
572	>	"AtomicLongArray9Test",
573	>	"AtomicReference9Test",
574	>	"AtomicReferenceArray9Test",
575	>	"ExecutorCompletionService9Test",
576	>	"ForkJoinPool9Test",
577	>	};
578	>	addNamedTestClasses(suite, java9TestClassNames);
579	>	}
580	>
581	>	return suite;
582	>	}
583	>
584	>	/** Returns list of junit-style test method names in given class. */
585	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
586	>	Method[] methods = testClass.getDeclaredMethods();
587	>	ArrayList<String> names = new ArrayList<>(methods.length);
588	>	for (Method method : methods) {
589	>	if (method.getName().startsWith("test")
590	>	&& Modifier.isPublic(method.getModifiers())
591	>	// method.getParameterCount() requires jdk8+
592	>	&& method.getParameterTypes().length == 0) {
593	>	names.add(method.getName());
594	>	}
595	>	}
596	>	return names;
597	>	}
598	>
599	>	/**
600	>	* Returns junit-style testSuite for the given test class, but
601	>	* parameterized by passing extra data to each test.
602	>	*/
603	>	public static <ExtraData> Test parameterizedTestSuite
604	>	(Class<? extends JSR166TestCase> testClass,
605	>	Class<ExtraData> dataClass,
606	>	ExtraData data) {
607	>	try {
608	>	TestSuite suite = new TestSuite();
609	>	Constructor c =
610	>	testClass.getDeclaredConstructor(dataClass, String.class);
611	>	for (String methodName : testMethodNames(testClass))
612	>	suite.addTest((Test) c.newInstance(data, methodName));
613	>	return suite;
614	>	} catch (ReflectiveOperationException e) {
615	>	throw new AssertionError(e);
616	>	}
617	>	}
618	>
619	>	/**
620	>	* Returns junit-style testSuite for the jdk8 extension of the
621	>	* given test class, but parameterized by passing extra data to
622	>	* each test.  Uses reflection to allow compilation in jdk7.
623	>	*/
624	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
625	>	(Class<? extends JSR166TestCase> testClass,
626	>	Class<ExtraData> dataClass,
627	>	ExtraData data) {
628	>	if (atLeastJava8()) {
629	>	String name = testClass.getName();
630	>	String name8 = name.replaceAll("Test$", "8Test");
631	>	if (name.equals(name8)) throw new AssertionError(name);
632	>	try {
633	>	return (Test)
634	>	Class.forName(name8)
635	>	.getMethod("testSuite", dataClass)
636	>	.invoke(null, data);
637	>	} catch (ReflectiveOperationException e) {
638	>	throw new AssertionError(e);
639	>	}
640	>	} else {
641	>	return new TestSuite();
642	>	}
643		}
644
645	+	// Delays for timing-dependent tests, in milliseconds.
646
647		public static long SHORT_DELAY_MS;
648		public static long SMALL_DELAY_MS;
649		public static long MEDIUM_DELAY_MS;
650		public static long LONG_DELAY_MS;
651
652	+	private static final long RANDOM_TIMEOUT;
653	+	private static final long RANDOM_EXPIRED_TIMEOUT;
654	+	private static final TimeUnit RANDOM_TIMEUNIT;
655	+	static {
656	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
657	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
658	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
659	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
660	+	TimeUnit[] timeUnits = TimeUnit.values();
661	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
662	+	}
663
664		/**
665	<	* Returns the shortest timed delay. This could
666	<	* be reimplemented to use for example a Property.
665	>	* Returns a timeout for use when any value at all will do.
666	>	*/
667	>	static long randomTimeout() { return RANDOM_TIMEOUT; }
668	>
669	>	/**
670	>	* Returns a timeout that means "no waiting", i.e. not positive.
671	>	*/
672	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
673	>
674	>	/**
675	>	* Returns a random non-null TimeUnit.
676	>	*/
677	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
678	>
679	>	/**
680	>	* Returns the shortest timed delay. This can be scaled up for
681	>	* slow machines using the jsr166.delay.factor system property,
682	>	* or via jtreg's -timeoutFactor: flag.
683	>	* http://openjdk.java.net/jtreg/command-help.html
684		*/
685		protected long getShortDelay() {
686	<	return 50;
686	>	return (long) (50 * delayFactor);
687		}
688
257	–
689		/**
690		* Sets delays as multiples of SHORT_DELAY.
691		*/
#	Line 265 | Line 696 | public class JSR166TestCase extends Test
696		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
697		}
698
699	+	private static final long TIMEOUT_DELAY_MS
700	+	= (long) (12.0 * Math.cbrt(delayFactor));
701	+
702	+	/**
703	+	* Returns a timeout in milliseconds to be used in tests that verify
704	+	* that operations block or time out.  We want this to be longer
705	+	* than the OS scheduling quantum, but not too long, so don't scale
706	+	* linearly with delayFactor; we use "crazy" cube root instead.
707	+	*/
708	+	static long timeoutMillis() {
709	+	return TIMEOUT_DELAY_MS;
710	+	}
711	+
712	+	/**
713	+	* Returns a new Date instance representing a time at least
714	+	* delayMillis milliseconds in the future.
715	+	*/
716	+	Date delayedDate(long delayMillis) {
717	+	// Add 1 because currentTimeMillis is known to round into the past.
718	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
719	+	}
720	+
721		/**
722		* The first exception encountered if any threadAssertXXX method fails.
723		*/
724		private final AtomicReference<Throwable> threadFailure
725	<	= new AtomicReference<Throwable>(null);
725	>	= new AtomicReference<>(null);
726
727		/**
728		* Records an exception so that it can be rethrown later in the test
#	Line 278 | Line 731 | public class JSR166TestCase extends Test
731		* the same test have no effect.
732		*/
733		public void threadRecordFailure(Throwable t) {
734	+	System.err.println(t);
735	+	dumpTestThreads();
736		threadFailure.compareAndSet(null, t);
737		}
738
#	Line 285 | Line 740 | public class JSR166TestCase extends Test
740		setDelays();
741		}
742
743	+	void tearDownFail(String format, Object... args) {
744	+	String msg = toString() + ": " + String.format(format, args);
745	+	System.err.println(msg);
746	+	dumpTestThreads();
747	+	throw new AssertionError(msg);
748	+	}
749	+
750		/**
751	+	* Extra checks that get done for all test cases.
752	+	*
753		* Triggers test case failure if any thread assertions have failed,
754		* by rethrowing, in the test harness thread, any exception recorded
755		* earlier by threadRecordFailure.
756	+	*
757	+	* Triggers test case failure if interrupt status is set in the main thread.
758		*/
759		public void tearDown() throws Exception {
760		Throwable t = threadFailure.getAndSet(null);
#	Line 299 | Line 765 | public class JSR166TestCase extends Test
765		throw (RuntimeException) t;
766		else if (t instanceof Exception)
767		throw (Exception) t;
768	<	else {
769	<	AssertionFailedError afe =
770	<	new AssertionFailedError(t.toString());
771	<	afe.initCause(t);
772	<	throw afe;
768	>	else
769	>	throw new AssertionError(t.toString(), t);
770	>	}
771	>
772	>	if (Thread.interrupted())
773	>	tearDownFail("interrupt status set in main thread");
774	>
775	>	checkForkJoinPoolThreadLeaks();
776	>	}
777	>
778	>	/**
779	>	* Finds missing PoolCleaners
780	>	*/
781	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
782	>	Thread[] survivors = new Thread[7];
783	>	int count = Thread.enumerate(survivors);
784	>	for (int i = 0; i < count; i++) {
785	>	Thread thread = survivors[i];
786	>	String name = thread.getName();
787	>	if (name.startsWith("ForkJoinPool-")) {
788	>	// give thread some time to terminate
789	>	thread.join(LONG_DELAY_MS);
790	>	if (thread.isAlive())
791	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
792	>	thread);
793		}
794		}
795	+
796	+	if (!ForkJoinPool.commonPool()
797	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
798	+	tearDownFail("ForkJoin common pool thread stuck");
799		}
800
801		/**
802		* Just like fail(reason), but additionally recording (using
803	<	* threadRecordFailure) any AssertionFailedError thrown, so that
804	<	* the current testcase will fail.
803	>	* threadRecordFailure) any AssertionError thrown, so that the
804	>	* current testcase will fail.
805		*/
806		public void threadFail(String reason) {
807		try {
808		fail(reason);
809	<	} catch (AssertionFailedError t) {
810	<	threadRecordFailure(t);
811	<	fail(reason);
809	>	} catch (AssertionError fail) {
810	>	threadRecordFailure(fail);
811	>	throw fail;
812		}
813		}
814
815		/**
816		* Just like assertTrue(b), but additionally recording (using
817	<	* threadRecordFailure) any AssertionFailedError thrown, so that
818	<	* the current testcase will fail.
817	>	* threadRecordFailure) any AssertionError thrown, so that the
818	>	* current testcase will fail.
819		*/
820		public void threadAssertTrue(boolean b) {
821		try {
822		assertTrue(b);
823	<	} catch (AssertionFailedError t) {
824	<	threadRecordFailure(t);
825	<	throw t;
823	>	} catch (AssertionError fail) {
824	>	threadRecordFailure(fail);
825	>	throw fail;
826		}
827		}
828
829		/**
830		* Just like assertFalse(b), but additionally recording (using
831	<	* threadRecordFailure) any AssertionFailedError thrown, so that
832	<	* the current testcase will fail.
831	>	* threadRecordFailure) any AssertionError thrown, so that the
832	>	* current testcase will fail.
833		*/
834		public void threadAssertFalse(boolean b) {
835		try {
836		assertFalse(b);
837	<	} catch (AssertionFailedError t) {
838	<	threadRecordFailure(t);
839	<	throw t;
837	>	} catch (AssertionError fail) {
838	>	threadRecordFailure(fail);
839	>	throw fail;
840		}
841		}
842
843		/**
844		* Just like assertNull(x), but additionally recording (using
845	<	* threadRecordFailure) any AssertionFailedError thrown, so that
846	<	* the current testcase will fail.
845	>	* threadRecordFailure) any AssertionError thrown, so that the
846	>	* current testcase will fail.
847		*/
848		public void threadAssertNull(Object x) {
849		try {
850		assertNull(x);
851	<	} catch (AssertionFailedError t) {
852	<	threadRecordFailure(t);
853	<	throw t;
851	>	} catch (AssertionError fail) {
852	>	threadRecordFailure(fail);
853	>	throw fail;
854		}
855		}
856
857		/**
858		* Just like assertEquals(x, y), but additionally recording (using
859	<	* threadRecordFailure) any AssertionFailedError thrown, so that
860	<	* the current testcase will fail.
859	>	* threadRecordFailure) any AssertionError thrown, so that the
860	>	* current testcase will fail.
861		*/
862		public void threadAssertEquals(long x, long y) {
863		try {
864		assertEquals(x, y);
865	<	} catch (AssertionFailedError t) {
866	<	threadRecordFailure(t);
867	<	throw t;
865	>	} catch (AssertionError fail) {
866	>	threadRecordFailure(fail);
867	>	throw fail;
868		}
869		}
870
871		/**
872		* Just like assertEquals(x, y), but additionally recording (using
873	<	* threadRecordFailure) any AssertionFailedError thrown, so that
874	<	* the current testcase will fail.
873	>	* threadRecordFailure) any AssertionError thrown, so that the
874	>	* current testcase will fail.
875		*/
876		public void threadAssertEquals(Object x, Object y) {
877		try {
878		assertEquals(x, y);
879	<	} catch (AssertionFailedError t) {
880	<	threadRecordFailure(t);
881	<	throw t;
882	<	} catch (Throwable t) {
883	<	threadUnexpectedException(t);
879	>	} catch (AssertionError fail) {
880	>	threadRecordFailure(fail);
881	>	throw fail;
882	>	} catch (Throwable fail) {
883	>	threadUnexpectedException(fail);
884		}
885		}
886
887		/**
888		* Just like assertSame(x, y), but additionally recording (using
889	<	* threadRecordFailure) any AssertionFailedError thrown, so that
890	<	* the current testcase will fail.
889	>	* threadRecordFailure) any AssertionError thrown, so that the
890	>	* current testcase will fail.
891		*/
892		public void threadAssertSame(Object x, Object y) {
893		try {
894		assertSame(x, y);
895	<	} catch (AssertionFailedError t) {
896	<	threadRecordFailure(t);
897	<	throw t;
895	>	} catch (AssertionError fail) {
896	>	threadRecordFailure(fail);
897	>	throw fail;
898		}
899		}
900
#	Line 424 | Line 914 | public class JSR166TestCase extends Test
914
915		/**
916		* Records the given exception using {@link #threadRecordFailure},
917	<	* then rethrows the exception, wrapping it in an
918	<	* AssertionFailedError if necessary.
917	>	* then rethrows the exception, wrapping it in an AssertionError
918	>	* if necessary.
919		*/
920		public void threadUnexpectedException(Throwable t) {
921		threadRecordFailure(t);
#	Line 434 | Line 924 | public class JSR166TestCase extends Test
924		throw (RuntimeException) t;
925		else if (t instanceof Error)
926		throw (Error) t;
927	<	else {
928	<	AssertionFailedError afe =
929	<	new AssertionFailedError("unexpected exception: " + t);
930	<	t.initCause(t);
931	<	throw afe;
927	>	else
928	>	throw new AssertionError("unexpected exception: " + t, t);
929	>	}
930	>
931	>	/**
932	>	* Delays, via Thread.sleep, for the given millisecond delay, but
933	>	* if the sleep is shorter than specified, may re-sleep or yield
934	>	* until time elapses.  Ensures that the given time, as measured
935	>	* by System.nanoTime(), has elapsed.
936	>	*/
937	>	static void delay(long millis) throws InterruptedException {
938	>	long nanos = millis * (1000 * 1000);
939	>	final long wakeupTime = System.nanoTime() + nanos;
940	>	do {
941	>	if (millis > 0L)
942	>	Thread.sleep(millis);
943	>	else // too short to sleep
944	>	Thread.yield();
945	>	nanos = wakeupTime - System.nanoTime();
946	>	millis = nanos / (1000 * 1000);
947	>	} while (nanos >= 0L);
948	>	}
949	>
950	>	/**
951	>	* Allows use of try-with-resources with per-test thread pools.
952	>	*/
953	>	class PoolCleaner implements AutoCloseable {
954	>	private final ExecutorService pool;
955	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
956	>	public void close() { joinPool(pool); }
957	>	}
958	>
959	>	/**
960	>	* An extension of PoolCleaner that has an action to release the pool.
961	>	*/
962	>	class PoolCleanerWithReleaser extends PoolCleaner {
963	>	private final Runnable releaser;
964	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
965	>	super(pool);
966	>	this.releaser = releaser;
967		}
968	+	public void close() {
969	+	try {
970	+	releaser.run();
971	+	} finally {
972	+	super.close();
973	+	}
974	+	}
975	+	}
976	+
977	+	PoolCleaner cleaner(ExecutorService pool) {
978	+	return new PoolCleaner(pool);
979	+	}
980	+
981	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
982	+	return new PoolCleanerWithReleaser(pool, releaser);
983	+	}
984	+
985	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
986	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
987	+	}
988	+
989	+	Runnable releaser(final CountDownLatch latch) {
990	+	return new Runnable() { public void run() {
991	+	do { latch.countDown(); }
992	+	while (latch.getCount() > 0);
993	+	}};
994	+	}
995	+
996	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
997	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
998	+	}
999	+
1000	+	Runnable releaser(final AtomicBoolean flag) {
1001	+	return new Runnable() { public void run() { flag.set(true); }};
1002		}
1003
1004		/**
1005		* Waits out termination of a thread pool or fails doing so.
1006		*/
1007	<	public void joinPool(ExecutorService exec) {
1007	>	void joinPool(ExecutorService pool) {
1008		try {
1009	<	exec.shutdown();
1010	<	assertTrue("ExecutorService did not terminate in a timely manner",
1011	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
1009	>	pool.shutdown();
1010	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1011	>	try {
1012	>	threadFail("ExecutorService " + pool +
1013	>	" did not terminate in a timely manner");
1014	>	} finally {
1015	>	// last resort, for the benefit of subsequent tests
1016	>	pool.shutdownNow();
1017	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1018	>	}
1019	>	}
1020		} catch (SecurityException ok) {
1021		// Allowed in case test doesn't have privs
1022	<	} catch (InterruptedException ie) {
1023	<	fail("Unexpected InterruptedException");
1022	>	} catch (InterruptedException fail) {
1023	>	threadFail("Unexpected InterruptedException");
1024		}
1025		}
1026
1027	+	/**
1028	+	* Like Runnable, but with the freedom to throw anything.
1029	+	* junit folks had the same idea:
1030	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1031	+	*/
1032	+	interface Action { public void run() throws Throwable; }
1033	+
1034	+	/**
1035	+	* Runs all the given actions in parallel, failing if any fail.
1036	+	* Useful for running multiple variants of tests that are
1037	+	* necessarily individually slow because they must block.
1038	+	*/
1039	+	void testInParallel(Action ... actions) {
1040	+	ExecutorService pool = Executors.newCachedThreadPool();
1041	+	try (PoolCleaner cleaner = cleaner(pool)) {
1042	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1043	+	for (final Action action : actions)
1044	+	futures.add(pool.submit(new CheckedRunnable() {
1045	+	public void realRun() throws Throwable { action.run();}}));
1046	+	for (Future<?> future : futures)
1047	+	try {
1048	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1049	+	} catch (ExecutionException ex) {
1050	+	threadUnexpectedException(ex.getCause());
1051	+	} catch (Exception ex) {
1052	+	threadUnexpectedException(ex);
1053	+	}
1054	+	}
1055	+	}
1056	+
1057	+	/**
1058	+	* A debugging tool to print stack traces of most threads, as jstack does.
1059	+	* Uninteresting threads are filtered out.
1060	+	*/
1061	+	static void dumpTestThreads() {
1062	+	SecurityManager sm = System.getSecurityManager();
1063	+	if (sm != null) {
1064	+	try {
1065	+	System.setSecurityManager(null);
1066	+	} catch (SecurityException giveUp) {
1067	+	return;
1068	+	}
1069	+	}
1070	+
1071	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1072	+	System.err.println("------ stacktrace dump start ------");
1073	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1074	+	final String name = info.getThreadName();
1075	+	String lockName;
1076	+	if ("Signal Dispatcher".equals(name))
1077	+	continue;
1078	+	if ("Reference Handler".equals(name)
1079	+	&& (lockName = info.getLockName()) != null
1080	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1081	+	continue;
1082	+	if ("Finalizer".equals(name)
1083	+	&& (lockName = info.getLockName()) != null
1084	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1085	+	continue;
1086	+	if ("checkForWedgedTest".equals(name))
1087	+	continue;
1088	+	System.err.print(info);
1089	+	}
1090	+	System.err.println("------ stacktrace dump end ------");
1091	+
1092	+	if (sm != null) System.setSecurityManager(sm);
1093	+	}
1094	+
1095	+	/**
1096	+	* Checks that thread eventually enters the expected blocked thread state.
1097	+	*/
1098	+	void assertThreadBlocks(Thread thread, Thread.State expected) {
1099	+	// always sleep at least 1 ms, with high probability avoiding
1100	+	// transitory states
1101	+	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1102	+	try { delay(1); }
1103	+	catch (InterruptedException fail) {
1104	+	throw new AssertionError("Unexpected InterruptedException", fail);
1105	+	}
1106	+	Thread.State s = thread.getState();
1107	+	if (s == expected)
1108	+	return;
1109	+	else if (s == Thread.State.TERMINATED)
1110	+	fail("Unexpected thread termination");
1111	+	}
1112	+	fail("timed out waiting for thread to enter thread state " + expected);
1113	+	}
1114	+
1115	+	/**
1116	+	* Checks that future.get times out, with the default timeout of
1117	+	* {@code timeoutMillis()}.
1118	+	*/
1119	+	void assertFutureTimesOut(Future future) {
1120	+	assertFutureTimesOut(future, timeoutMillis());
1121	+	}
1122	+
1123	+	/**
1124	+	* Checks that future.get times out, with the given millisecond timeout.
1125	+	*/
1126	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1127	+	long startTime = System.nanoTime();
1128	+	try {
1129	+	future.get(timeoutMillis, MILLISECONDS);
1130	+	shouldThrow();
1131	+	} catch (TimeoutException success) {
1132	+	} catch (Exception fail) {
1133	+	threadUnexpectedException(fail);
1134	+	} finally { future.cancel(true); }
1135	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1136	+	}
1137
1138		/**
1139		* Fails with message "should throw exception".
#	Line 473 | Line 1150 | public class JSR166TestCase extends Test
1150		}
1151
1152		/**
1153	+	* The maximum number of consecutive spurious wakeups we should
1154	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1155	+	*/
1156	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1157	+
1158	+	/**
1159		* The number of elements to place in collections, arrays, etc.
1160		*/
1161		public static final int SIZE = 20;
#	Line 497 | Line 1180 | public class JSR166TestCase extends Test
1180		public static final Integer m6  = new Integer(-6);
1181		public static final Integer m10 = new Integer(-10);
1182
500	–
1183		/**
1184		* Runs Runnable r with a security policy that permits precisely
1185		* the specified permissions.  If there is no current security
#	Line 509 | Line 1191 | public class JSR166TestCase extends Test
1191		SecurityManager sm = System.getSecurityManager();
1192		if (sm == null) {
1193		r.run();
1194	+	}
1195	+	runWithSecurityManagerWithPermissions(r, permissions);
1196	+	}
1197	+
1198	+	/**
1199	+	* Runs Runnable r with a security policy that permits precisely
1200	+	* the specified permissions.  If there is no current security
1201	+	* manager, a temporary one is set for the duration of the
1202	+	* Runnable.  We require that any security manager permit
1203	+	* getPolicy/setPolicy.
1204	+	*/
1205	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1206	+	Permission... permissions) {
1207	+	SecurityManager sm = System.getSecurityManager();
1208	+	if (sm == null) {
1209		Policy savedPolicy = Policy.getPolicy();
1210		try {
1211		Policy.setPolicy(permissivePolicy());
1212		System.setSecurityManager(new SecurityManager());
1213	<	runWithPermissions(r, permissions);
1213	>	runWithSecurityManagerWithPermissions(r, permissions);
1214		} finally {
1215		System.setSecurityManager(null);
1216		Policy.setPolicy(savedPolicy);
#	Line 561 | Line 1258 | public class JSR166TestCase extends Test
1258		return perms.implies(p);
1259		}
1260		public void refresh() {}
1261	+	public String toString() {
1262	+	List<Permission> ps = new ArrayList<>();
1263	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1264	+	ps.add(e.nextElement());
1265	+	return "AdjustablePolicy with permissions " + ps;
1266	+	}
1267		}
1268
1269		/**
#	Line 584 | Line 1287 | public class JSR166TestCase extends Test
1287
1288		/**
1289		* Sleeps until the given time has elapsed.
1290	<	* Throws AssertionFailedError if interrupted.
1290	>	* Throws AssertionError if interrupted.
1291		*/
1292	<	void sleep(long millis) {
1292	>	static void sleep(long millis) {
1293		try {
1294	<	Thread.sleep(millis);
1295	<	} catch (InterruptedException ie) {
1296	<	AssertionFailedError afe =
594	<	new AssertionFailedError("Unexpected InterruptedException");
595	<	afe.initCause(ie);
596	<	throw afe;
1294	>	delay(millis);
1295	>	} catch (InterruptedException fail) {
1296	>	throw new AssertionError("Unexpected InterruptedException", fail);
1297		}
1298		}
1299
1300		/**
1301	<	* Sleeps until the timeout has elapsed, or interrupted.
1302	<	* Does <em>NOT</em> throw InterruptedException.
1301	>	* Spin-waits up to the specified number of milliseconds for the given
1302	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1303	>	* @param waitingForGodot if non-null, an additional condition to satisfy
1304		*/
1305	<	void sleepTillInterrupted(long timeoutMillis) {
1306	<	try {
1307	<	Thread.sleep(timeoutMillis);
1308	<	} catch (InterruptedException wakeup) {}
1305	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1306	>	Callable<Boolean> waitingForGodot) {
1307	>	for (long startTime = 0L;;) {
1308	>	switch (thread.getState()) {
1309	>	default: break;
1310	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1311	>	try {
1312	>	if (waitingForGodot == null || waitingForGodot.call())
1313	>	return;
1314	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1315	>	break;
1316	>	case TERMINATED:
1317	>	fail("Unexpected thread termination");
1318	>	}
1319	>
1320	>	if (startTime == 0L)
1321	>	startTime = System.nanoTime();
1322	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1323	>	assertTrue(thread.isAlive());
1324	>	if (waitingForGodot == null
1325	>	|| thread.getState() == Thread.State.RUNNABLE)
1326	>	fail("timed out waiting for thread to enter wait state");
1327	>	else
1328	>	fail("timed out waiting for condition, thread state="
1329	>	+ thread.getState());
1330	>	}
1331	>	Thread.yield();
1332	>	}
1333		}
1334
1335		/**
1336	<	* Waits up to the specified number of milliseconds for the given
1336	>	* Spin-waits up to the specified number of milliseconds for the given
1337		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1338		*/
1339		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1340	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
1341	<	long t0 = System.nanoTime();
1342	<	for (;;) {
1343	<	Thread.State s = thread.getState();
1344	<	if (s == Thread.State.BLOCKED ||
1345	<	s == Thread.State.WAITING ||
1346	<	s == Thread.State.TIMED_WAITING)
1347	<	return;
1348	<	else if (s == Thread.State.TERMINATED)
1349	<	fail("Unexpected thread termination");
1350	<	else if (System.nanoTime() - t0 > timeoutNanos) {
1351	<	threadAssertTrue(thread.isAlive());
1352	<	return;
1353	<	}
1354	<	Thread.yield();
1355	<	}
1340	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1341	>	}
1342	>
1343	>	/**
1344	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1345	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1346	>	*/
1347	>	void waitForThreadToEnterWaitState(Thread thread) {
1348	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1349	>	}
1350	>
1351	>	/**
1352	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1353	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1354	>	* and additionally satisfy the given condition.
1355	>	*/
1356	>	void waitForThreadToEnterWaitState(Thread thread,
1357	>	Callable<Boolean> waitingForGodot) {
1358	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1359		}
1360
1361		/**
1362		* Returns the number of milliseconds since time given by
1363		* startNanoTime, which must have been previously returned from a
1364	<	* call to {@link System.nanoTime()}.
1364	>	* call to {@link System#nanoTime()}.
1365		*/
1366	<	long millisElapsedSince(long startNanoTime) {
1366	>	static long millisElapsedSince(long startNanoTime) {
1367		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1368		}
1369
1370	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1371	+	//         long startTime = System.nanoTime();
1372	+	//         try {
1373	+	//             r.run();
1374	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1375	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1376	+	//             throw new AssertionError("did not return promptly");
1377	+	//     }
1378	+
1379	+	//     void assertTerminatesPromptly(Runnable r) {
1380	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1381	+	//     }
1382	+
1383	+	/**
1384	+	* Checks that timed f.get() returns the expected value, and does not
1385	+	* wait for the timeout to elapse before returning.
1386	+	*/
1387	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1388	+	long startTime = System.nanoTime();
1389	+	T actual = null;
1390	+	try {
1391	+	actual = f.get(timeoutMillis, MILLISECONDS);
1392	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1393	+	assertEquals(expectedValue, actual);
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		/**
1403		* Returns a new started daemon Thread running the given runnable.
1404		*/
#	Line 657 | 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 675 | Line 1444 | public class JSR166TestCase extends Test
1444		public final void run() {
1445		try {
1446		realRun();
1447	<	} catch (Throwable t) {
1448	<	threadUnexpectedException(t);
680	<	}
681	<	}
682	<	}
683	<
684	<	public abstract class RunnableShouldThrow implements Runnable {
685	<	protected abstract void realRun() throws Throwable;
686	<
687	<	final Class<?> exceptionClass;
688	<
689	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
690	<	this.exceptionClass = exceptionClass;
691	<	}
692	<
693	<	public final void run() {
694	<	try {
695	<	realRun();
696	<	threadShouldThrow(exceptionClass.getSimpleName());
697	<	} catch (Throwable t) {
698	<	if (! exceptionClass.isInstance(t))
699	<	threadUnexpectedException(t);
1447	>	} catch (Throwable fail) {
1448	>	threadUnexpectedException(fail);
1449		}
1450		}
1451		}
#	Line 713 | Line 1462 | public class JSR166TestCase extends Test
1462		public final void run() {
1463		try {
1464		realRun();
716	–	threadShouldThrow(exceptionClass.getSimpleName());
1465		} catch (Throwable t) {
1466		if (! exceptionClass.isInstance(t))
1467		threadUnexpectedException(t);
1468	+	return;
1469		}
1470	+	threadShouldThrow(exceptionClass.getSimpleName());
1471		}
1472		}
1473
#	Line 727 | Line 1477 | public class JSR166TestCase extends Test
1477		public final void run() {
1478		try {
1479		realRun();
730	–	threadShouldThrow("InterruptedException");
1480		} catch (InterruptedException success) {
1481	<	} catch (Throwable t) {
1482	<	threadUnexpectedException(t);
1481	>	threadAssertFalse(Thread.interrupted());
1482	>	return;
1483	>	} catch (Throwable fail) {
1484	>	threadUnexpectedException(fail);
1485		}
1486	+	threadShouldThrow("InterruptedException");
1487		}
1488		}
1489
#	Line 741 | Line 1493 | public class JSR166TestCase extends Test
1493		public final T call() {
1494		try {
1495		return realCall();
1496	<	} catch (Throwable t) {
1497	<	threadUnexpectedException(t);
746	<	return null;
1496	>	} catch (Throwable fail) {
1497	>	threadUnexpectedException(fail);
1498		}
1499	<	}
749	<	}
750	<
751	<	public abstract class CheckedInterruptedCallable<T>
752	<	implements Callable<T> {
753	<	protected abstract T realCall() throws Throwable;
754	<
755	<	public final T call() {
756	<	try {
757	<	T result = realCall();
758	<	threadShouldThrow("InterruptedException");
759	<	return result;
760	<	} catch (InterruptedException success) {
761	<	} catch (Throwable t) {
762	<	threadUnexpectedException(t);
763	<	}
764	<	return null;
1499	>	throw new AssertionError("unreached");
1500		}
1501		}
1502
#	Line 776 | Line 1511 | public class JSR166TestCase extends Test
1511		public static final String TEST_STRING = "a test string";
1512
1513		public static class StringTask implements Callable<String> {
1514	<	public String call() { return TEST_STRING; }
1514	>	final String value;
1515	>	public StringTask() { this(TEST_STRING); }
1516	>	public StringTask(String value) { this.value = value; }
1517	>	public String call() { return value; }
1518		}
1519
1520		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 789 | Line 1527 | public class JSR166TestCase extends Test
1527		}};
1528		}
1529
1530	<	public Runnable awaiter(final CountDownLatch latch) {
1530	>	public Runnable countDowner(final CountDownLatch latch) {
1531		return new CheckedRunnable() {
1532		public void realRun() throws InterruptedException {
1533	<	latch.await();
1533	>	latch.countDown();
1534		}};
1535		}
1536
1537	<	public static class NPETask implements Callable<String> {
1538	<	public String call() { throw new NullPointerException(); }
1539	<	}
1540	<
1541	<	public static class CallableOne implements Callable<Integer> {
1542	<	public Integer call() { return one; }
1543	<	}
1544	<
1545	<	public class ShortRunnable extends CheckedRunnable {
1546	<	protected void realRun() throws Throwable {
1547	<	Thread.sleep(SHORT_DELAY_MS);
1537	>	class LatchAwaiter extends CheckedRunnable {
1538	>	static final int NEW = 0;
1539	>	static final int RUNNING = 1;
1540	>	static final int DONE = 2;
1541	>	final CountDownLatch latch;
1542	>	int state = NEW;
1543	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1544	>	public void realRun() throws InterruptedException {
1545	>	state = 1;
1546	>	await(latch);
1547	>	state = 2;
1548		}
1549		}
1550
1551	<	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1552	<	protected void realRun() throws InterruptedException {
815	<	Thread.sleep(SHORT_DELAY_MS);
816	<	}
1551	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1552	>	return new LatchAwaiter(latch);
1553		}
1554
1555	<	public class SmallRunnable extends CheckedRunnable {
1556	<	protected void realRun() throws Throwable {
1557	<	Thread.sleep(SMALL_DELAY_MS);
1555	>	public void await(CountDownLatch latch, long timeoutMillis) {
1556	>	boolean timedOut = false;
1557	>	try {
1558	>	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1559	>	} catch (Throwable fail) {
1560	>	threadUnexpectedException(fail);
1561		}
1562	+	if (timedOut)
1563	+	fail("timed out waiting for CountDownLatch for "
1564	+	+ (timeoutMillis/1000) + " sec");
1565		}
1566
1567	<	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1568	<	protected void realRun() {
827	<	try {
828	<	Thread.sleep(SMALL_DELAY_MS);
829	<	} catch (InterruptedException ok) {}
830	<	}
1567	>	public void await(CountDownLatch latch) {
1568	>	await(latch, LONG_DELAY_MS);
1569		}
1570
1571	<	public class SmallCallable extends CheckedCallable {
1572	<	protected Object realCall() throws InterruptedException {
1573	<	Thread.sleep(SMALL_DELAY_MS);
1574	<	return Boolean.TRUE;
1571	>	public void await(Semaphore semaphore) {
1572	>	boolean timedOut = false;
1573	>	try {
1574	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1575	>	} catch (Throwable fail) {
1576	>	threadUnexpectedException(fail);
1577		}
1578	+	if (timedOut)
1579	+	fail("timed out waiting for Semaphore for "
1580	+	+ (LONG_DELAY_MS/1000) + " sec");
1581		}
1582
1583	<	public class MediumRunnable extends CheckedRunnable {
1584	<	protected void realRun() throws Throwable {
1585	<	Thread.sleep(MEDIUM_DELAY_MS);
1583	>	public void await(CyclicBarrier barrier) {
1584	>	try {
1585	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1586	>	} catch (Throwable fail) {
1587	>	threadUnexpectedException(fail);
1588		}
1589		}
1590
1591	<	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1592	<	protected void realRun() throws InterruptedException {
1593	<	Thread.sleep(MEDIUM_DELAY_MS);
1594	<	}
1591	>	//     /**
1592	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1593	>	//      */
1594	>	//     public void await(AtomicBoolean flag) {
1595	>	//         await(flag, LONG_DELAY_MS);
1596	>	//     }
1597	>
1598	>	//     /**
1599	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1600	>	//      */
1601	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1602	>	//         long startTime = System.nanoTime();
1603	>	//         while (!flag.get()) {
1604	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1605	>	//                 throw new AssertionError("timed out");
1606	>	//             Thread.yield();
1607	>	//         }
1608	>	//     }
1609	>
1610	>	public static class NPETask implements Callable<String> {
1611	>	public String call() { throw new NullPointerException(); }
1612		}
1613
1614		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1615		return new CheckedRunnable() {
1616		protected void realRun() {
1617		try {
1618	<	Thread.sleep(timeoutMillis);
1618	>	delay(timeoutMillis);
1619		} catch (InterruptedException ok) {}
1620		}};
1621		}
1622
861	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
862	–	protected void realRun() {
863	–	try {
864	–	Thread.sleep(MEDIUM_DELAY_MS);
865	–	} catch (InterruptedException ok) {}
866	–	}
867	–	}
868	–
869	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
870	–	protected void realRun() {
871	–	try {
872	–	Thread.sleep(LONG_DELAY_MS);
873	–	} catch (InterruptedException ok) {}
874	–	}
875	–	}
876	–
1623		/**
1624		* For use as ThreadFactory in constructors
1625		*/
#	Line 887 | Line 1633 | public class JSR166TestCase extends Test
1633		boolean isDone();
1634		}
1635
890	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
891	–	return new TrackedRunnable() {
892	–	private volatile boolean done = false;
893	–	public boolean isDone() { return done; }
894	–	public void run() {
895	–	try {
896	–	Thread.sleep(timeoutMillis);
897	–	done = true;
898	–	} catch (InterruptedException ok) {}
899	–	}
900	–	};
901	–	}
902	–
903	–	public static class TrackedShortRunnable implements Runnable {
904	–	public volatile boolean done = false;
905	–	public void run() {
906	–	try {
907	–	Thread.sleep(SHORT_DELAY_MS);
908	–	done = true;
909	–	} catch (InterruptedException ok) {}
910	–	}
911	–	}
912	–
913	–	public static class TrackedSmallRunnable implements Runnable {
914	–	public volatile boolean done = false;
915	–	public void run() {
916	–	try {
917	–	Thread.sleep(SMALL_DELAY_MS);
918	–	done = true;
919	–	} catch (InterruptedException ok) {}
920	–	}
921	–	}
922	–
923	–	public static class TrackedMediumRunnable implements Runnable {
924	–	public volatile boolean done = false;
925	–	public void run() {
926	–	try {
927	–	Thread.sleep(MEDIUM_DELAY_MS);
928	–	done = true;
929	–	} catch (InterruptedException ok) {}
930	–	}
931	–	}
932	–
933	–	public static class TrackedLongRunnable implements Runnable {
934	–	public volatile boolean done = false;
935	–	public void run() {
936	–	try {
937	–	Thread.sleep(LONG_DELAY_MS);
938	–	done = true;
939	–	} catch (InterruptedException ok) {}
940	–	}
941	–	}
942	–
1636		public static class TrackedNoOpRunnable implements Runnable {
1637		public volatile boolean done = false;
1638		public void run() {
#	Line 947 | Line 1640 | public class JSR166TestCase extends Test
1640		}
1641		}
1642
950	–	public static class TrackedCallable implements Callable {
951	–	public volatile boolean done = false;
952	–	public Object call() {
953	–	try {
954	–	Thread.sleep(SMALL_DELAY_MS);
955	–	done = true;
956	–	} catch (InterruptedException ok) {}
957	–	return Boolean.TRUE;
958	–	}
959	–	}
960	–
1643		/**
1644		* Analog of CheckedRunnable for RecursiveAction
1645		*/
1646		public abstract class CheckedRecursiveAction extends RecursiveAction {
1647		protected abstract void realCompute() throws Throwable;
1648
1649	<	public final void compute() {
1649	>	@Override protected final void compute() {
1650		try {
1651		realCompute();
1652	<	} catch (Throwable t) {
1653	<	threadUnexpectedException(t);
1652	>	} catch (Throwable fail) {
1653	>	threadUnexpectedException(fail);
1654		}
1655		}
1656		}
#	Line 979 | Line 1661 | public class JSR166TestCase extends Test
1661		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1662		protected abstract T realCompute() throws Throwable;
1663
1664	<	public final T compute() {
1664	>	@Override protected final T compute() {
1665		try {
1666		return realCompute();
1667	<	} catch (Throwable t) {
1668	<	threadUnexpectedException(t);
987	<	return null;
1667	>	} catch (Throwable fail) {
1668	>	threadUnexpectedException(fail);
1669		}
1670	+	throw new AssertionError("unreached");
1671		}
1672		}
1673
#	Line 998 | Line 1680 | public class JSR166TestCase extends Test
1680		}
1681
1682		/**
1683	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1684	<	* of throwing checked exceptions.
1683	>	* A CyclicBarrier that uses timed await and fails with
1684	>	* AssertionErrors instead of throwing checked exceptions.
1685		*/
1686	<	public class CheckedBarrier extends CyclicBarrier {
1686	>	public static class CheckedBarrier extends CyclicBarrier {
1687		public CheckedBarrier(int parties) { super(parties); }
1688
1689		public int await() {
1690		try {
1691	<	return super.await();
1692	<	} catch (Exception e) {
1693	<	AssertionFailedError afe =
1694	<	new AssertionFailedError("Unexpected exception: " + e);
1695	<	afe.initCause(e);
1014	<	throw afe;
1691	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1692	>	} catch (TimeoutException timedOut) {
1693	>	throw new AssertionError("timed out");
1694	>	} catch (Exception fail) {
1695	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1696		}
1697		}
1698		}
1699
1700	<	public void checkEmpty(BlockingQueue q) {
1700	>	void checkEmpty(BlockingQueue q) {
1701		try {
1702		assertTrue(q.isEmpty());
1703		assertEquals(0, q.size());
1704		assertNull(q.peek());
1705		assertNull(q.poll());
1706	<	assertNull(q.poll(0, MILLISECONDS));
1706	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1707		assertEquals(q.toString(), "[]");
1708		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1709		assertFalse(q.iterator().hasNext());
#	Line 1038 | Line 1719 | public class JSR166TestCase extends Test
1719		q.remove();
1720		shouldThrow();
1721		} catch (NoSuchElementException success) {}
1722	<	} catch (InterruptedException ie) {
1723	<	threadUnexpectedException(ie);
1722	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1723	>	}
1724	>
1725	>	void assertSerialEquals(Object x, Object y) {
1726	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1727	>	}
1728	>
1729	>	void assertNotSerialEquals(Object x, Object y) {
1730	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1731	>	}
1732	>
1733	>	byte[] serialBytes(Object o) {
1734	>	try {
1735	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1736	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1737	>	oos.writeObject(o);
1738	>	oos.flush();
1739	>	oos.close();
1740	>	return bos.toByteArray();
1741	>	} catch (Throwable fail) {
1742	>	threadUnexpectedException(fail);
1743	>	return new byte[0];
1744		}
1745		}
1746
1747	+	void assertImmutable(final Object o) {
1748	+	if (o instanceof Collection) {
1749	+	assertThrows(
1750	+	UnsupportedOperationException.class,
1751	+	new Runnable() { public void run() {
1752	+	((Collection) o).add(null);}});
1753	+	}
1754	+	}
1755	+
1756	+	@SuppressWarnings("unchecked")
1757	+	<T> T serialClone(T o) {
1758	+	T clone = null;
1759	+	try {
1760	+	ObjectInputStream ois = new ObjectInputStream
1761	+	(new ByteArrayInputStream(serialBytes(o)));
1762	+	clone = (T) ois.readObject();
1763	+	} catch (Throwable fail) {
1764	+	threadUnexpectedException(fail);
1765	+	}
1766	+	if (o == clone) assertImmutable(o);
1767	+	else assertSame(o.getClass(), clone.getClass());
1768	+	return clone;
1769	+	}
1770	+
1771	+	/**
1772	+	* A version of serialClone that leaves error handling (for
1773	+	* e.g. NotSerializableException) up to the caller.
1774	+	*/
1775	+	@SuppressWarnings("unchecked")
1776	+	<T> T serialClonePossiblyFailing(T o)
1777	+	throws ReflectiveOperationException, java.io.IOException {
1778	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1779	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1780	+	oos.writeObject(o);
1781	+	oos.flush();
1782	+	oos.close();
1783	+	ObjectInputStream ois = new ObjectInputStream
1784	+	(new ByteArrayInputStream(bos.toByteArray()));
1785	+	T clone = (T) ois.readObject();
1786	+	if (o == clone) assertImmutable(o);
1787	+	else assertSame(o.getClass(), clone.getClass());
1788	+	return clone;
1789	+	}
1790	+
1791	+	/**
1792	+	* If o implements Cloneable and has a public clone method,
1793	+	* returns a clone of o, else null.
1794	+	*/
1795	+	@SuppressWarnings("unchecked")
1796	+	<T> T cloneableClone(T o) {
1797	+	if (!(o instanceof Cloneable)) return null;
1798	+	final T clone;
1799	+	try {
1800	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1801	+	} catch (NoSuchMethodException ok) {
1802	+	return null;
1803	+	} catch (ReflectiveOperationException unexpected) {
1804	+	throw new Error(unexpected);
1805	+	}
1806	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1807	+	assertSame(o.getClass(), clone.getClass());
1808	+	return clone;
1809	+	}
1810	+
1811	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1812	+	Runnable... throwingActions) {
1813	+	for (Runnable throwingAction : throwingActions) {
1814	+	boolean threw = false;
1815	+	try { throwingAction.run(); }
1816	+	catch (Throwable t) {
1817	+	threw = true;
1818	+	if (!expectedExceptionClass.isInstance(t))
1819	+	throw new AssertionError(
1820	+	"Expected " + expectedExceptionClass.getName() +
1821	+	", got " + t.getClass().getName(),
1822	+	t);
1823	+	}
1824	+	if (!threw)
1825	+	shouldThrow(expectedExceptionClass.getName());
1826	+	}
1827	+	}
1828	+
1829	+	public void assertIteratorExhausted(Iterator<?> it) {
1830	+	try {
1831	+	it.next();
1832	+	shouldThrow();
1833	+	} catch (NoSuchElementException success) {}
1834	+	assertFalse(it.hasNext());
1835	+	}
1836	+
1837	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1838	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1839	+	}
1840	+
1841	+	public Runnable runnableThrowing(final RuntimeException ex) {
1842	+	return new Runnable() { public void run() { throw ex; }};
1843	+	}
1844	+
1845	+	/** A reusable thread pool to be shared by tests. */
1846	+	static final ExecutorService cachedThreadPool =
1847	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1848	+	1000L, MILLISECONDS,
1849	+	new SynchronousQueue<Runnable>());
1850	+
1851	+	static <T> void shuffle(T[] array) {
1852	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1853	+	}
1854	+
1855	+	/**
1856	+	* Returns the same String as would be returned by {@link
1857	+	* Object#toString}, whether or not the given object's class
1858	+	* overrides toString().
1859	+	*
1860	+	* @see System#identityHashCode
1861	+	*/
1862	+	static String identityString(Object x) {
1863	+	return x.getClass().getName()
1864	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1865	+	}
1866	+
1867	+	// --- Shared assertions for Executor tests ---
1868	+
1869	+	/**
1870	+	* Returns maximum number of tasks that can be submitted to given
1871	+	* pool (with bounded queue) before saturation (when submission
1872	+	* throws RejectedExecutionException).
1873	+	*/
1874	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1875	+	BlockingQueue<Runnable> q = pool.getQueue();
1876	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1877	+	}
1878	+
1879	+	@SuppressWarnings("FutureReturnValueIgnored")
1880	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1881	+	try {
1882	+	e.execute((Runnable) null);
1883	+	shouldThrow();
1884	+	} catch (NullPointerException success) {}
1885	+
1886	+	if (! (e instanceof ExecutorService)) return;
1887	+	ExecutorService es = (ExecutorService) e;
1888	+	try {
1889	+	es.submit((Runnable) null);
1890	+	shouldThrow();
1891	+	} catch (NullPointerException success) {}
1892	+	try {
1893	+	es.submit((Runnable) null, Boolean.TRUE);
1894	+	shouldThrow();
1895	+	} catch (NullPointerException success) {}
1896	+	try {
1897	+	es.submit((Callable) null);
1898	+	shouldThrow();
1899	+	} catch (NullPointerException success) {}
1900	+
1901	+	if (! (e instanceof ScheduledExecutorService)) return;
1902	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1903	+	try {
1904	+	ses.schedule((Runnable) null,
1905	+	randomTimeout(), randomTimeUnit());
1906	+	shouldThrow();
1907	+	} catch (NullPointerException success) {}
1908	+	try {
1909	+	ses.schedule((Callable) null,
1910	+	randomTimeout(), randomTimeUnit());
1911	+	shouldThrow();
1912	+	} catch (NullPointerException success) {}
1913	+	try {
1914	+	ses.scheduleAtFixedRate((Runnable) null,
1915	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1916	+	shouldThrow();
1917	+	} catch (NullPointerException success) {}
1918	+	try {
1919	+	ses.scheduleWithFixedDelay((Runnable) null,
1920	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1921	+	shouldThrow();
1922	+	} catch (NullPointerException success) {}
1923	+	}
1924	+
1925	+	void setRejectedExecutionHandler(
1926	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1927	+	p.setRejectedExecutionHandler(handler);
1928	+	assertSame(handler, p.getRejectedExecutionHandler());
1929	+	}
1930	+
1931	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1932	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1933	+	final long savedTaskCount = p.getTaskCount();
1934	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1935	+	final int savedQueueSize = p.getQueue().size();
1936	+	final boolean stock = (p.getClass().getClassLoader() == null);
1937	+
1938	+	Runnable r = () -> {};
1939	+	Callable<Boolean> c = () -> Boolean.TRUE;
1940	+
1941	+	class Recorder implements RejectedExecutionHandler {
1942	+	public volatile Runnable r = null;
1943	+	public volatile ThreadPoolExecutor p = null;
1944	+	public void reset() { r = null; p = null; }
1945	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1946	+	assertNull(this.r);
1947	+	assertNull(this.p);
1948	+	this.r = r;
1949	+	this.p = p;
1950	+	}
1951	+	}
1952	+
1953	+	// check custom handler is invoked exactly once per task
1954	+	Recorder recorder = new Recorder();
1955	+	setRejectedExecutionHandler(p, recorder);
1956	+	for (int i = 2; i--> 0; ) {
1957	+	recorder.reset();
1958	+	p.execute(r);
1959	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
1960	+	assertSame(r, recorder.r);
1961	+	assertSame(p, recorder.p);
1962	+
1963	+	recorder.reset();
1964	+	assertFalse(p.submit(r).isDone());
1965	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1966	+	assertSame(p, recorder.p);
1967	+
1968	+	recorder.reset();
1969	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1970	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1971	+	assertSame(p, recorder.p);
1972	+
1973	+	recorder.reset();
1974	+	assertFalse(p.submit(c).isDone());
1975	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1976	+	assertSame(p, recorder.p);
1977	+
1978	+	if (p instanceof ScheduledExecutorService) {
1979	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
1980	+	ScheduledFuture<?> future;
1981	+
1982	+	recorder.reset();
1983	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
1984	+	assertFalse(future.isDone());
1985	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1986	+	assertSame(p, recorder.p);
1987	+
1988	+	recorder.reset();
1989	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
1990	+	assertFalse(future.isDone());
1991	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1992	+	assertSame(p, recorder.p);
1993	+
1994	+	recorder.reset();
1995	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1996	+	assertFalse(future.isDone());
1997	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1998	+	assertSame(p, recorder.p);
1999	+
2000	+	recorder.reset();
2001	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2002	+	assertFalse(future.isDone());
2003	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2004	+	assertSame(p, recorder.p);
2005	+	}
2006	+	}
2007	+
2008	+	// Checking our custom handler above should be sufficient, but
2009	+	// we add some integration tests of standard handlers.
2010	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2011	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2012	+
2013	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2014	+	try {
2015	+	p.execute(setThread);
2016	+	shouldThrow();
2017	+	} catch (RejectedExecutionException success) {}
2018	+	assertNull(thread.get());
2019	+
2020	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2021	+	p.execute(setThread);
2022	+	assertNull(thread.get());
2023	+
2024	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2025	+	p.execute(setThread);
2026	+	if (p.isShutdown())
2027	+	assertNull(thread.get());
2028	+	else
2029	+	assertSame(Thread.currentThread(), thread.get());
2030	+
2031	+	setRejectedExecutionHandler(p, savedHandler);
2032	+
2033	+	// check that pool was not perturbed by handlers
2034	+	assertEquals(savedTaskCount, p.getTaskCount());
2035	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2036	+	assertEquals(savedQueueSize, p.getQueue().size());
2037	+	}
2038	+
2039	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2040	+	assertEquals(x, y);
2041	+	assertEquals(y, x);
2042	+	assertEquals(x.isEmpty(), y.isEmpty());
2043	+	assertEquals(x.size(), y.size());
2044	+	if (x instanceof List) {
2045	+	assertEquals(x.toString(), y.toString());
2046	+	}
2047	+	if (x instanceof List || x instanceof Set) {
2048	+	assertEquals(x.hashCode(), y.hashCode());
2049	+	}
2050	+	if (x instanceof List || x instanceof Deque) {
2051	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2052	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2053	+	y.toArray(new Object[0])));
2054	+	}
2055	+	}
2056	+
2057	+	/**
2058	+	* A weaker form of assertCollectionsEquals which does not insist
2059	+	* that the two collections satisfy Object#equals(Object), since
2060	+	* they may use identity semantics as Deques do.
2061	+	*/
2062	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2063	+	if (x instanceof List || x instanceof Set)
2064	+	assertCollectionsEquals(x, y);
2065	+	else {
2066	+	assertEquals(x.isEmpty(), y.isEmpty());
2067	+	assertEquals(x.size(), y.size());
2068	+	assertEquals(new HashSet(x), new HashSet(y));
2069	+	if (x instanceof Deque) {
2070	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2071	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2072	+	y.toArray(new Object[0])));
2073	+	}
2074	+	}
2075	+	}
2076		}

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