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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.102 by jsr166, Wed Feb 6 19:55:06 2013 UTC vs.
Revision 1.241 by jsr166, Sun Jan 28 16:20:42 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
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.*;
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;
60	+	import java.security.Permissions;
61	+	import java.security.Policy;
62	+	import java.security.ProtectionDomain;
63	+	import java.security.SecurityPermission;
64		import java.util.ArrayList;
65		import java.util.Arrays;
66	+	import java.util.Collection;
67	+	import java.util.Collections;
68		import java.util.Date;
69		import java.util.Enumeration;
70	+	import java.util.Iterator;
71		import java.util.List;
72		import java.util.NoSuchElementException;
73		import java.util.PropertyPermission;
74	<	import java.util.concurrent.*;
74	>	import java.util.concurrent.BlockingQueue;
75	>	import java.util.concurrent.Callable;
76	>	import java.util.concurrent.CountDownLatch;
77	>	import java.util.concurrent.CyclicBarrier;
78	>	import java.util.concurrent.ExecutionException;
79	>	import java.util.concurrent.Executor;
80	>	import java.util.concurrent.Executors;
81	>	import java.util.concurrent.ExecutorService;
82	>	import java.util.concurrent.ForkJoinPool;
83	>	import java.util.concurrent.Future;
84	>	import java.util.concurrent.FutureTask;
85	>	import java.util.concurrent.RecursiveAction;
86	>	import java.util.concurrent.RecursiveTask;
87	>	import java.util.concurrent.RejectedExecutionException;
88	>	import java.util.concurrent.RejectedExecutionHandler;
89	>	import java.util.concurrent.Semaphore;
90	>	import java.util.concurrent.ScheduledExecutorService;
91	>	import java.util.concurrent.ScheduledFuture;
92	>	import java.util.concurrent.SynchronousQueue;
93	>	import java.util.concurrent.ThreadFactory;
94	>	import java.util.concurrent.ThreadLocalRandom;
95	>	import java.util.concurrent.ThreadPoolExecutor;
96	>	import java.util.concurrent.TimeUnit;
97	>	import java.util.concurrent.TimeoutException;
98		import java.util.concurrent.atomic.AtomicBoolean;
99		import java.util.concurrent.atomic.AtomicReference;
100	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
101	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
102	<	import java.security.CodeSource;
103	<	import java.security.Permission;
104	<	import java.security.PermissionCollection;
105	<	import java.security.Permissions;
33	<	import java.security.Policy;
34	<	import java.security.ProtectionDomain;
35	<	import java.security.SecurityPermission;
100	>	import java.util.regex.Pattern;
101	>
102	>	import junit.framework.Test;
103	>	import junit.framework.TestCase;
104	>	import junit.framework.TestResult;
105	>	import junit.framework.TestSuite;
106
107		/**
108		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 44 | Line 114 | import java.security.SecurityPermission;
114		*
115		* <ol>
116		*
117	<	* <li> All assertions in code running in generated threads must use
117	>	* <li>All assertions in code running in generated threads must use
118		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
119		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
120		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
121		* particularly recommended) for other code to use these forms too.
122		* Only the most typically used JUnit assertion methods are defined
123	<	* this way, but enough to live with.</li>
123	>	* this way, but enough to live with.
124		*
125	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
125	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
126		* to invoke {@code super.setUp} and {@code super.tearDown} within
127		* them. These methods are used to clear and check for thread
128	<	* assertion failures.</li>
128	>	* assertion failures.
129		*
130		* <li>All delays and timeouts must use one of the constants {@code
131		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 66 | Line 136 | import java.security.SecurityPermission;
136		* is always discriminable as larger than SHORT and smaller than
137		* MEDIUM.  And so on. These constants are set to conservative values,
138		* but even so, if there is ever any doubt, they can all be increased
139	<	* in one spot to rerun tests on slower platforms.</li>
139	>	* in one spot to rerun tests on slower platforms.
140		*
141	<	* <li> All threads generated must be joined inside each test case
141	>	* <li>All threads generated must be joined inside each test case
142		* method (or {@code fail} to do so) before returning from the
143		* method. The {@code joinPool} method can be used to do this when
144	<	* using Executors.</li>
144	>	* using Executors.
145		*
146		* </ol>
147		*
148		* <p><b>Other notes</b>
149		* <ul>
150		*
151	<	* <li> Usually, there is one testcase method per JSR166 method
151	>	* <li>Usually, there is one testcase method per JSR166 method
152		* covering "normal" operation, and then as many exception-testing
153		* methods as there are exceptions the method can throw. Sometimes
154		* there are multiple tests per JSR166 method when the different
155		* "normal" behaviors differ significantly. And sometimes testcases
156	<	* cover multiple methods when they cannot be tested in
87	<	* isolation.</li>
156	>	* cover multiple methods when they cannot be tested in isolation.
157		*
158	<	* <li> The documentation style for testcases is to provide as javadoc
158	>	* <li>The documentation style for testcases is to provide as javadoc
159		* a simple sentence or two describing the property that the testcase
160		* method purports to test. The javadocs do not say anything about how
161	<	* the property is tested. To find out, read the code.</li>
161	>	* the property is tested. To find out, read the code.
162		*
163	<	* <li> These tests are "conformance tests", and do not attempt to
163	>	* <li>These tests are "conformance tests", and do not attempt to
164		* test throughput, latency, scalability or other performance factors
165		* (see the separate "jtreg" tests for a set intended to check these
166		* for the most central aspects of functionality.) So, most tests use
167		* the smallest sensible numbers of threads, collection sizes, etc
168	<	* needed to check basic conformance.</li>
168	>	* needed to check basic conformance.
169		*
170		* <li>The test classes currently do not declare inclusion in
171		* any particular package to simplify things for people integrating
172	<	* them in TCK test suites.</li>
172	>	* them in TCK test suites.
173		*
174	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
175	<	* runs all JSR166 unit tests.</li>
174	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
175	>	* runs all JSR166 unit tests.
176		*
177		* </ul>
178		*/
#	Line 115 | Line 184 | public class JSR166TestCase extends Test
184		Boolean.getBoolean("jsr166.expensiveTests");
185
186		/**
187	+	* If true, also run tests that are not part of the official tck
188	+	* because they test unspecified implementation details.
189	+	*/
190	+	protected static final boolean testImplementationDetails =
191	+	Boolean.getBoolean("jsr166.testImplementationDetails");
192	+
193	+	/**
194		* If true, report on stdout all "slow" tests, that is, ones that
195		* take more than profileThreshold milliseconds to execute.
196		*/
#	Line 128 | Line 204 | public class JSR166TestCase extends Test
204		private static final long profileThreshold =
205		Long.getLong("jsr166.profileThreshold", 100);
206
207	+	/**
208	+	* The number of repetitions per test (for tickling rare bugs).
209	+	*/
210	+	private static final int runsPerTest =
211	+	Integer.getInteger("jsr166.runsPerTest", 1);
212	+
213	+	/**
214	+	* The number of repetitions of the test suite (for finding leaks?).
215	+	*/
216	+	private static final int suiteRuns =
217	+	Integer.getInteger("jsr166.suiteRuns", 1);
218	+
219	+	/**
220	+	* Returns the value of the system property, or NaN if not defined.
221	+	*/
222	+	private static float systemPropertyValue(String name) {
223	+	String floatString = System.getProperty(name);
224	+	if (floatString == null)
225	+	return Float.NaN;
226	+	try {
227	+	return Float.parseFloat(floatString);
228	+	} catch (NumberFormatException ex) {
229	+	throw new IllegalArgumentException(
230	+	String.format("Bad float value in system property %s=%s",
231	+	name, floatString));
232	+	}
233	+	}
234	+
235	+	/**
236	+	* The scaling factor to apply to standard delays used in tests.
237	+	* May be initialized from any of:
238	+	* - the "jsr166.delay.factor" system property
239	+	* - the "test.timeout.factor" system property (as used by jtreg)
240	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
241	+	* - hard-coded fuzz factor when using a known slowpoke VM
242	+	*/
243	+	private static final float delayFactor = delayFactor();
244	+
245	+	private static float delayFactor() {
246	+	float x;
247	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
248	+	return x;
249	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
250	+	return x;
251	+	String prop = System.getProperty("java.vm.version");
252	+	if (prop != null && prop.matches(".*debug.*"))
253	+	return 4.0f; // How much slower is fastdebug than product?!
254	+	return 1.0f;
255	+	}
256	+
257	+	public JSR166TestCase() { super(); }
258	+	public JSR166TestCase(String name) { super(name); }
259	+
260	+	/**
261	+	* A filter for tests to run, matching strings of the form
262	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
263	+	* Usefully combined with jsr166.runsPerTest.
264	+	*/
265	+	private static final Pattern methodFilter = methodFilter();
266	+
267	+	private static Pattern methodFilter() {
268	+	String regex = System.getProperty("jsr166.methodFilter");
269	+	return (regex == null) ? null : Pattern.compile(regex);
270	+	}
271	+
272	+	// Instrumentation to debug very rare, but very annoying hung test runs.
273	+	static volatile TestCase currentTestCase;
274	+	// static volatile int currentRun = 0;
275	+	static {
276	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
277	+	// Avoid spurious reports with enormous runsPerTest.
278	+	// A single test case run should never take more than 1 second.
279	+	// But let's cap it at the high end too ...
280	+	final int timeoutMinutes =
281	+	Math.min(15, Math.max(runsPerTest / 60, 1));
282	+	for (TestCase lastTestCase = currentTestCase;;) {
283	+	try { MINUTES.sleep(timeoutMinutes); }
284	+	catch (InterruptedException unexpected) { break; }
285	+	if (lastTestCase == currentTestCase) {
286	+	System.err.printf(
287	+	"Looks like we're stuck running test: %s%n",
288	+	lastTestCase);
289	+	//                     System.err.printf(
290	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
291	+	//                         lastTestCase, currentRun, runsPerTest);
292	+	//                     System.err.println("availableProcessors=" +
293	+	//                         Runtime.getRuntime().availableProcessors());
294	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
295	+	dumpTestThreads();
296	+	// one stack dump is probably enough; more would be spam
297	+	break;
298	+	}
299	+	lastTestCase = currentTestCase;
300	+	}}};
301	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
302	+	thread.setDaemon(true);
303	+	thread.start();
304	+	}
305	+
306	+	//     public static String cpuModel() {
307	+	//         try {
308	+	//             java.util.regex.Matcher matcher
309	+	//               = Pattern.compile("model name\\s*: (.*)")
310	+	//                 .matcher(new String(
311	+	//                     java.nio.file.Files.readAllBytes(
312	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
313	+	//             matcher.find();
314	+	//             return matcher.group(1);
315	+	//         } catch (Exception ex) { return null; }
316	+	//     }
317	+
318	+	public void runBare() throws Throwable {
319	+	currentTestCase = this;
320	+	if (methodFilter == null
321	+	|| methodFilter.matcher(toString()).find())
322	+	super.runBare();
323	+	}
324	+
325		protected void runTest() throws Throwable {
326	<	if (profileTests)
327	<	runTestProfiled();
328	<	else
329	<	super.runTest();
326	>	for (int i = 0; i < runsPerTest; i++) {
327	>	// currentRun = i;
328	>	if (profileTests)
329	>	runTestProfiled();
330	>	else
331	>	super.runTest();
332	>	}
333		}
334
335		protected void runTestProfiled() throws Throwable {
336	<	long t0 = System.nanoTime();
337	<	try {
336	>	for (int i = 0; i < 2; i++) {
337	>	long startTime = System.nanoTime();
338		super.runTest();
339	<	} finally {
340	<	long elapsedMillis =
341	<	(System.nanoTime() - t0) / (1000L * 1000L);
342	<	if (elapsedMillis >= profileThreshold)
339	>	long elapsedMillis = millisElapsedSince(startTime);
340	>	if (elapsedMillis < profileThreshold)
341	>	break;
342	>	// Never report first run of any test; treat it as a
343	>	// warmup run, notably to trigger all needed classloading,
344	>	if (i > 0)
345		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
346		}
347		}
348
349		/**
350		* Runs all JSR166 unit tests using junit.textui.TestRunner.
152	–	* Optional command line arg provides the number of iterations to
153	–	* repeat running the tests.
351		*/
352		public static void main(String[] args) {
353	+	main(suite(), args);
354	+	}
355	+
356	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
357	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
358	+	long runTime;
359	+	public void startTest(Test test) {}
360	+	protected void printHeader(long runTime) {
361	+	this.runTime = runTime; // defer printing for later
362	+	}
363	+	protected void printFooter(TestResult result) {
364	+	if (result.wasSuccessful()) {
365	+	getWriter().println("OK (" + result.runCount() + " tests)"
366	+	+ "  Time: " + elapsedTimeAsString(runTime));
367	+	} else {
368	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
369	+	super.printFooter(result);
370	+	}
371	+	}
372	+	}
373	+
374	+	/**
375	+	* Returns a TestRunner that doesn't bother with unnecessary
376	+	* fluff, like printing a "." for each test case.
377	+	*/
378	+	static junit.textui.TestRunner newPithyTestRunner() {
379	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
380	+	runner.setPrinter(new PithyResultPrinter(System.out));
381	+	return runner;
382	+	}
383	+
384	+	/**
385	+	* Runs all unit tests in the given test suite.
386	+	* Actual behavior influenced by jsr166.* system properties.
387	+	*/
388	+	static void main(Test suite, String[] args) {
389		if (useSecurityManager) {
390		System.err.println("Setting a permissive security manager");
391		Policy.setPolicy(permissivePolicy());
392		System.setSecurityManager(new SecurityManager());
393		}
394	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
395	<
396	<	Test s = suite();
397	<	for (int i = 0; i < iters; ++i) {
165	<	junit.textui.TestRunner.run(s);
394	>	for (int i = 0; i < suiteRuns; i++) {
395	>	TestResult result = newPithyTestRunner().doRun(suite);
396	>	if (!result.wasSuccessful())
397	>	System.exit(1);
398		System.gc();
399		System.runFinalization();
400		}
169	–	System.exit(0);
401		}
402
403		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 187 | Line 418 | public class JSR166TestCase extends Test
418		for (String testClassName : testClassNames) {
419		try {
420		Class<?> testClass = Class.forName(testClassName);
421	<	Method m = testClass.getDeclaredMethod("suite",
191	<	new Class<?>[0]);
421	>	Method m = testClass.getDeclaredMethod("suite");
422		suite.addTest(newTestSuite((Test)m.invoke(null)));
423	<	} catch (Exception e) {
424	<	throw new Error("Missing test class", e);
423	>	} catch (ReflectiveOperationException e) {
424	>	throw new AssertionError("Missing test class", e);
425		}
426		}
427		}
428
429		public static final double JAVA_CLASS_VERSION;
430	+	public static final String JAVA_SPECIFICATION_VERSION;
431		static {
432		try {
433		JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
434		new java.security.PrivilegedAction<Double>() {
435		public Double run() {
436		return Double.valueOf(System.getProperty("java.class.version"));}});
437	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
438	+	new java.security.PrivilegedAction<String>() {
439	+	public String run() {
440	+	return System.getProperty("java.specification.version");}});
441		} catch (Throwable t) {
442		throw new Error(t);
443		}
444		}
445
446	<	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
447	<	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
448	<	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
446	>	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
447	>	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
448	>	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
449	>	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
450	>	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
451
452		/**
453		* Collects all JSR166 unit tests as one suite.
#	Line 231 | Line 468 | public class JSR166TestCase extends Test
468		AbstractQueuedLongSynchronizerTest.suite(),
469		ArrayBlockingQueueTest.suite(),
470		ArrayDequeTest.suite(),
471	+	ArrayListTest.suite(),
472		AtomicBooleanTest.suite(),
473		AtomicIntegerArrayTest.suite(),
474		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 253 | Line 491 | public class JSR166TestCase extends Test
491		CopyOnWriteArrayListTest.suite(),
492		CopyOnWriteArraySetTest.suite(),
493		CountDownLatchTest.suite(),
494	+	CountedCompleterTest.suite(),
495		CyclicBarrierTest.suite(),
496		DelayQueueTest.suite(),
497		EntryTest.suite(),
#	Line 281 | Line 520 | public class JSR166TestCase extends Test
520		TreeMapTest.suite(),
521		TreeSetTest.suite(),
522		TreeSubMapTest.suite(),
523	<	TreeSubSetTest.suite());
523	>	TreeSubSetTest.suite(),
524	>	VectorTest.suite());
525
526		// Java8+ test classes
527		if (atLeastJava8()) {
528		String[] java8TestClassNames = {
529	+	"ArrayDeque8Test",
530	+	"Atomic8Test",
531		"CompletableFutureTest",
532	+	"ConcurrentHashMap8Test",
533	+	"CountedCompleter8Test",
534	+	"DoubleAccumulatorTest",
535	+	"DoubleAdderTest",
536		"ForkJoinPool8Test",
537	+	"ForkJoinTask8Test",
538	+	"HashMapTest",
539	+	"LinkedBlockingDeque8Test",
540	+	"LinkedBlockingQueue8Test",
541	+	"LongAccumulatorTest",
542	+	"LongAdderTest",
543	+	"SplittableRandomTest",
544		"StampedLockTest",
545	+	"SubmissionPublisherTest",
546	+	"ThreadLocalRandom8Test",
547	+	"TimeUnit8Test",
548		};
549		addNamedTestClasses(suite, java8TestClassNames);
550		}
551
552	+	// Java9+ test classes
553	+	if (atLeastJava9()) {
554	+	String[] java9TestClassNames = {
555	+	"AtomicBoolean9Test",
556	+	"AtomicInteger9Test",
557	+	"AtomicIntegerArray9Test",
558	+	"AtomicLong9Test",
559	+	"AtomicLongArray9Test",
560	+	"AtomicReference9Test",
561	+	"AtomicReferenceArray9Test",
562	+	"ExecutorCompletionService9Test",
563	+	"ForkJoinPool9Test",
564	+	};
565	+	addNamedTestClasses(suite, java9TestClassNames);
566	+	}
567	+
568		return suite;
569		}
570
571	+	/** Returns list of junit-style test method names in given class. */
572	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
573	+	Method[] methods = testClass.getDeclaredMethods();
574	+	ArrayList<String> names = new ArrayList<>(methods.length);
575	+	for (Method method : methods) {
576	+	if (method.getName().startsWith("test")
577	+	&& Modifier.isPublic(method.getModifiers())
578	+	// method.getParameterCount() requires jdk8+
579	+	&& method.getParameterTypes().length == 0) {
580	+	names.add(method.getName());
581	+	}
582	+	}
583	+	return names;
584	+	}
585	+
586	+	/**
587	+	* Returns junit-style testSuite for the given test class, but
588	+	* parameterized by passing extra data to each test.
589	+	*/
590	+	public static <ExtraData> Test parameterizedTestSuite
591	+	(Class<? extends JSR166TestCase> testClass,
592	+	Class<ExtraData> dataClass,
593	+	ExtraData data) {
594	+	try {
595	+	TestSuite suite = new TestSuite();
596	+	Constructor c =
597	+	testClass.getDeclaredConstructor(dataClass, String.class);
598	+	for (String methodName : testMethodNames(testClass))
599	+	suite.addTest((Test) c.newInstance(data, methodName));
600	+	return suite;
601	+	} catch (ReflectiveOperationException e) {
602	+	throw new AssertionError(e);
603	+	}
604	+	}
605	+
606	+	/**
607	+	* Returns junit-style testSuite for the jdk8 extension of the
608	+	* given test class, but parameterized by passing extra data to
609	+	* each test.  Uses reflection to allow compilation in jdk7.
610	+	*/
611	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
612	+	(Class<? extends JSR166TestCase> testClass,
613	+	Class<ExtraData> dataClass,
614	+	ExtraData data) {
615	+	if (atLeastJava8()) {
616	+	String name = testClass.getName();
617	+	String name8 = name.replaceAll("Test$", "8Test");
618	+	if (name.equals(name8)) throw new AssertionError(name);
619	+	try {
620	+	return (Test)
621	+	Class.forName(name8)
622	+	.getMethod("testSuite", dataClass)
623	+	.invoke(null, data);
624	+	} catch (ReflectiveOperationException e) {
625	+	throw new AssertionError(e);
626	+	}
627	+	} else {
628	+	return new TestSuite();
629	+	}
630	+	}
631	+
632	+	// Delays for timing-dependent tests, in milliseconds.
633
634		public static long SHORT_DELAY_MS;
635		public static long SMALL_DELAY_MS;
636		public static long MEDIUM_DELAY_MS;
637		public static long LONG_DELAY_MS;
638
639	+	private static final long RANDOM_TIMEOUT;
640	+	private static final long RANDOM_EXPIRED_TIMEOUT;
641	+	private static final TimeUnit RANDOM_TIMEUNIT;
642	+	static {
643	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
644	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
645	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
646	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
647	+	TimeUnit[] timeUnits = TimeUnit.values();
648	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
649	+	}
650	+
651	+	/**
652	+	* Returns a timeout for use when any value at all will do.
653	+	*/
654	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
655	+
656	+	/**
657	+	* Returns a timeout that means "no waiting", i.e. not positive.
658	+	*/
659	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
660	+
661	+	/**
662	+	* Returns a random non-null TimeUnit.
663	+	*/
664	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
665
666		/**
667	<	* Returns the shortest timed delay. This could
668	<	* be reimplemented to use for example a Property.
667	>	* Returns the shortest timed delay. This can be scaled up for
668	>	* slow machines using the jsr166.delay.factor system property,
669	>	* or via jtreg's -timeoutFactor: flag.
670	>	* http://openjdk.java.net/jtreg/command-help.html
671		*/
672		protected long getShortDelay() {
673	<	return 50;
673	>	return (long) (50 * delayFactor);
674		}
675
676		/**
#	Line 321 | Line 683 | public class JSR166TestCase extends Test
683		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
684		}
685
686	+	private static final long TIMEOUT_DELAY_MS
687	+	= (long) (12.0 * Math.cbrt(delayFactor));
688	+
689		/**
690	<	* Returns a timeout in milliseconds to be used in tests that
691	<	* verify that operations block or time out.
690	>	* Returns a timeout in milliseconds to be used in tests that verify
691	>	* that operations block or time out.  We want this to be longer
692	>	* than the OS scheduling quantum, but not too long, so don't scale
693	>	* linearly with delayFactor; we use "crazy" cube root instead.
694		*/
695	<	long timeoutMillis() {
696	<	return SHORT_DELAY_MS / 4;
695	>	static long timeoutMillis() {
696	>	return TIMEOUT_DELAY_MS;
697		}
698
699		/**
700	<	* Returns a new Date instance representing a time delayMillis
701	<	* milliseconds in the future.
700	>	* Returns a new Date instance representing a time at least
701	>	* delayMillis milliseconds in the future.
702		*/
703		Date delayedDate(long delayMillis) {
704	<	return new Date(System.currentTimeMillis() + delayMillis);
704	>	// Add 1 because currentTimeMillis is known to round into the past.
705	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
706		}
707
708		/**
709		* The first exception encountered if any threadAssertXXX method fails.
710		*/
711		private final AtomicReference<Throwable> threadFailure
712	<	= new AtomicReference<Throwable>(null);
712	>	= new AtomicReference<>(null);
713
714		/**
715		* Records an exception so that it can be rethrown later in the test
#	Line 350 | Line 718 | public class JSR166TestCase extends Test
718		* the same test have no effect.
719		*/
720		public void threadRecordFailure(Throwable t) {
721	+	System.err.println(t);
722	+	dumpTestThreads();
723		threadFailure.compareAndSet(null, t);
724		}
725
#	Line 357 | Line 727 | public class JSR166TestCase extends Test
727		setDelays();
728		}
729
730	+	void tearDownFail(String format, Object... args) {
731	+	String msg = toString() + ": " + String.format(format, args);
732	+	System.err.println(msg);
733	+	dumpTestThreads();
734	+	throw new AssertionError(msg);
735	+	}
736	+
737		/**
738		* Extra checks that get done for all test cases.
739		*
#	Line 375 | Line 752 | public class JSR166TestCase extends Test
752		throw (RuntimeException) t;
753		else if (t instanceof Exception)
754		throw (Exception) t;
755	<	else {
756	<	AssertionFailedError afe =
380	<	new AssertionFailedError(t.toString());
381	<	afe.initCause(t);
382	<	throw afe;
383	<	}
755	>	else
756	>	throw new AssertionError(t.toString(), t);
757		}
758
759		if (Thread.interrupted())
760	<	throw new AssertionFailedError("interrupt status set in main thread");
760	>	tearDownFail("interrupt status set in main thread");
761
762		checkForkJoinPoolThreadLeaks();
763		}
764
765		/**
766	<	* Find missing try { ... } finally { joinPool(e); }
766	>	* Finds missing PoolCleaners
767		*/
768		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
769	<	Thread[] survivors = new Thread[5];
769	>	Thread[] survivors = new Thread[7];
770		int count = Thread.enumerate(survivors);
771		for (int i = 0; i < count; i++) {
772		Thread thread = survivors[i];
#	Line 401 | Line 774 | public class JSR166TestCase extends Test
774		if (name.startsWith("ForkJoinPool-")) {
775		// give thread some time to terminate
776		thread.join(LONG_DELAY_MS);
777	<	if (!thread.isAlive()) continue;
778	<	thread.stop();
779	<	throw new AssertionFailedError
407	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
408	<	toString(), name));
777	>	if (thread.isAlive())
778	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
779	>	thread);
780		}
781		}
782	+
783	+	if (!ForkJoinPool.commonPool()
784	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
785	+	tearDownFail("ForkJoin common pool thread stuck");
786		}
787
788		/**
789		* Just like fail(reason), but additionally recording (using
790	<	* threadRecordFailure) any AssertionFailedError thrown, so that
791	<	* the current testcase will fail.
790	>	* threadRecordFailure) any AssertionError thrown, so that the
791	>	* current testcase will fail.
792		*/
793		public void threadFail(String reason) {
794		try {
795		fail(reason);
796	<	} catch (AssertionFailedError t) {
797	<	threadRecordFailure(t);
798	<	fail(reason);
796	>	} catch (AssertionError fail) {
797	>	threadRecordFailure(fail);
798	>	throw fail;
799		}
800		}
801
802		/**
803		* Just like assertTrue(b), but additionally recording (using
804	<	* threadRecordFailure) any AssertionFailedError thrown, so that
805	<	* the current testcase will fail.
804	>	* threadRecordFailure) any AssertionError thrown, so that the
805	>	* current testcase will fail.
806		*/
807		public void threadAssertTrue(boolean b) {
808		try {
809		assertTrue(b);
810	<	} catch (AssertionFailedError t) {
811	<	threadRecordFailure(t);
812	<	throw t;
810	>	} catch (AssertionError fail) {
811	>	threadRecordFailure(fail);
812	>	throw fail;
813		}
814		}
815
816		/**
817		* Just like assertFalse(b), but additionally recording (using
818	<	* threadRecordFailure) any AssertionFailedError thrown, so that
819	<	* the current testcase will fail.
818	>	* threadRecordFailure) any AssertionError thrown, so that the
819	>	* current testcase will fail.
820		*/
821		public void threadAssertFalse(boolean b) {
822		try {
823		assertFalse(b);
824	<	} catch (AssertionFailedError t) {
825	<	threadRecordFailure(t);
826	<	throw t;
824	>	} catch (AssertionError fail) {
825	>	threadRecordFailure(fail);
826	>	throw fail;
827		}
828		}
829
830		/**
831		* Just like assertNull(x), but additionally recording (using
832	<	* threadRecordFailure) any AssertionFailedError thrown, so that
833	<	* the current testcase will fail.
832	>	* threadRecordFailure) any AssertionError thrown, so that the
833	>	* current testcase will fail.
834		*/
835		public void threadAssertNull(Object x) {
836		try {
837		assertNull(x);
838	<	} catch (AssertionFailedError t) {
839	<	threadRecordFailure(t);
840	<	throw t;
838	>	} catch (AssertionError fail) {
839	>	threadRecordFailure(fail);
840	>	throw fail;
841		}
842		}
843
844		/**
845		* Just like assertEquals(x, y), but additionally recording (using
846	<	* threadRecordFailure) any AssertionFailedError thrown, so that
847	<	* the current testcase will fail.
846	>	* threadRecordFailure) any AssertionError thrown, so that the
847	>	* current testcase will fail.
848		*/
849		public void threadAssertEquals(long x, long y) {
850		try {
851		assertEquals(x, y);
852	<	} catch (AssertionFailedError t) {
853	<	threadRecordFailure(t);
854	<	throw t;
852	>	} catch (AssertionError fail) {
853	>	threadRecordFailure(fail);
854	>	throw fail;
855		}
856		}
857
858		/**
859		* Just like assertEquals(x, y), but additionally recording (using
860	<	* threadRecordFailure) any AssertionFailedError thrown, so that
861	<	* the current testcase will fail.
860	>	* threadRecordFailure) any AssertionError thrown, so that the
861	>	* current testcase will fail.
862		*/
863		public void threadAssertEquals(Object x, Object y) {
864		try {
865		assertEquals(x, y);
866	<	} catch (AssertionFailedError t) {
867	<	threadRecordFailure(t);
868	<	throw t;
869	<	} catch (Throwable t) {
870	<	threadUnexpectedException(t);
866	>	} catch (AssertionError fail) {
867	>	threadRecordFailure(fail);
868	>	throw fail;
869	>	} catch (Throwable fail) {
870	>	threadUnexpectedException(fail);
871		}
872		}
873
874		/**
875		* Just like assertSame(x, y), but additionally recording (using
876	<	* threadRecordFailure) any AssertionFailedError thrown, so that
877	<	* the current testcase will fail.
876	>	* threadRecordFailure) any AssertionError thrown, so that the
877	>	* current testcase will fail.
878		*/
879		public void threadAssertSame(Object x, Object y) {
880		try {
881		assertSame(x, y);
882	<	} catch (AssertionFailedError t) {
883	<	threadRecordFailure(t);
884	<	throw t;
882	>	} catch (AssertionError fail) {
883	>	threadRecordFailure(fail);
884	>	throw fail;
885		}
886		}
887
#	Line 526 | Line 901 | public class JSR166TestCase extends Test
901
902		/**
903		* Records the given exception using {@link #threadRecordFailure},
904	<	* then rethrows the exception, wrapping it in an
905	<	* AssertionFailedError if necessary.
904	>	* then rethrows the exception, wrapping it in an AssertionError
905	>	* if necessary.
906		*/
907		public void threadUnexpectedException(Throwable t) {
908		threadRecordFailure(t);
#	Line 536 | Line 911 | public class JSR166TestCase extends Test
911		throw (RuntimeException) t;
912		else if (t instanceof Error)
913		throw (Error) t;
914	<	else {
915	<	AssertionFailedError afe =
541	<	new AssertionFailedError("unexpected exception: " + t);
542	<	afe.initCause(t);
543	<	throw afe;
544	<	}
914	>	else
915	>	throw new AssertionError("unexpected exception: " + t, t);
916		}
917
918		/**
919		* Delays, via Thread.sleep, for the given millisecond delay, but
920		* if the sleep is shorter than specified, may re-sleep or yield
921	<	* until time elapses.
921	>	* until time elapses.  Ensures that the given time, as measured
922	>	* by System.nanoTime(), has elapsed.
923		*/
924		static void delay(long millis) throws InterruptedException {
925	<	long startTime = System.nanoTime();
926	<	long ns = millis * 1000 * 1000;
927	<	for (;;) {
925	>	long nanos = millis * (1000 * 1000);
926	>	final long wakeupTime = System.nanoTime() + nanos;
927	>	do {
928		if (millis > 0L)
929		Thread.sleep(millis);
930		else // too short to sleep
931		Thread.yield();
932	<	long d = ns - (System.nanoTime() - startTime);
933	<	if (d > 0L)
934	<	millis = d / (1000 * 1000);
935	<	else
936	<	break;
932	>	nanos = wakeupTime - System.nanoTime();
933	>	millis = nanos / (1000 * 1000);
934	>	} while (nanos >= 0L);
935	>	}
936	>
937	>	/**
938	>	* Allows use of try-with-resources with per-test thread pools.
939	>	*/
940	>	class PoolCleaner implements AutoCloseable {
941	>	private final ExecutorService pool;
942	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
943	>	public void close() { joinPool(pool); }
944	>	}
945	>
946	>	/**
947	>	* An extension of PoolCleaner that has an action to release the pool.
948	>	*/
949	>	class PoolCleanerWithReleaser extends PoolCleaner {
950	>	private final Runnable releaser;
951	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
952	>	super(pool);
953	>	this.releaser = releaser;
954	>	}
955	>	public void close() {
956	>	try {
957	>	releaser.run();
958	>	} finally {
959	>	super.close();
960	>	}
961		}
962		}
963
964	+	PoolCleaner cleaner(ExecutorService pool) {
965	+	return new PoolCleaner(pool);
966	+	}
967	+
968	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
969	+	return new PoolCleanerWithReleaser(pool, releaser);
970	+	}
971	+
972	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
973	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
974	+	}
975	+
976	+	Runnable releaser(final CountDownLatch latch) {
977	+	return new Runnable() { public void run() {
978	+	do { latch.countDown(); }
979	+	while (latch.getCount() > 0);
980	+	}};
981	+	}
982	+
983	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
984	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
985	+	}
986	+
987	+	Runnable releaser(final AtomicBoolean flag) {
988	+	return new Runnable() { public void run() { flag.set(true); }};
989	+	}
990	+
991		/**
992		* Waits out termination of a thread pool or fails doing so.
993		*/
994	<	void joinPool(ExecutorService exec) {
994	>	void joinPool(ExecutorService pool) {
995		try {
996	<	exec.shutdown();
997	<	assertTrue("ExecutorService did not terminate in a timely manner",
998	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
996	>	pool.shutdown();
997	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
998	>	try {
999	>	threadFail("ExecutorService " + pool +
1000	>	" did not terminate in a timely manner");
1001	>	} finally {
1002	>	// last resort, for the benefit of subsequent tests
1003	>	pool.shutdownNow();
1004	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1005	>	}
1006	>	}
1007		} catch (SecurityException ok) {
1008		// Allowed in case test doesn't have privs
1009	<	} catch (InterruptedException ie) {
1010	<	fail("Unexpected InterruptedException");
1009	>	} catch (InterruptedException fail) {
1010	>	threadFail("Unexpected InterruptedException");
1011		}
1012		}
1013
1014		/**
1015	<	* A debugging tool to print all stack traces, as jstack does.
1015	>	* Like Runnable, but with the freedom to throw anything.
1016	>	* junit folks had the same idea:
1017	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1018		*/
1019	<	static void printAllStackTraces() {
587	<	for (ThreadInfo info :
588	<	ManagementFactory.getThreadMXBean()
589	<	.dumpAllThreads(true, true))
590	<	System.err.print(info);
591	<	}
1019	>	interface Action { public void run() throws Throwable; }
1020
1021		/**
1022	<	* Checks that thread does not terminate within the default
1023	<	* millisecond delay of {@code timeoutMillis()}.
1022	>	* Runs all the given actions in parallel, failing if any fail.
1023	>	* Useful for running multiple variants of tests that are
1024	>	* necessarily individually slow because they must block.
1025		*/
1026	<	void assertThreadStaysAlive(Thread thread) {
1027	<	assertThreadStaysAlive(thread, timeoutMillis());
1026	>	void testInParallel(Action ... actions) {
1027	>	ExecutorService pool = Executors.newCachedThreadPool();
1028	>	try (PoolCleaner cleaner = cleaner(pool)) {
1029	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1030	>	for (final Action action : actions)
1031	>	futures.add(pool.submit(new CheckedRunnable() {
1032	>	public void realRun() throws Throwable { action.run();}}));
1033	>	for (Future<?> future : futures)
1034	>	try {
1035	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1036	>	} catch (ExecutionException ex) {
1037	>	threadUnexpectedException(ex.getCause());
1038	>	} catch (Exception ex) {
1039	>	threadUnexpectedException(ex);
1040	>	}
1041	>	}
1042		}
1043
1044		/**
1045	<	* Checks that thread does not terminate within the given millisecond delay.
1045	>	* A debugging tool to print stack traces of most threads, as jstack does.
1046	>	* Uninteresting threads are filtered out.
1047		*/
1048	<	void assertThreadStaysAlive(Thread thread, long millis) {
1049	<	try {
1050	<	// No need to optimize the failing case via Thread.join.
1051	<	delay(millis);
1052	<	assertTrue(thread.isAlive());
1053	<	} catch (InterruptedException ie) {
1054	<	fail("Unexpected InterruptedException");
1048	>	static void dumpTestThreads() {
1049	>	SecurityManager sm = System.getSecurityManager();
1050	>	if (sm != null) {
1051	>	try {
1052	>	System.setSecurityManager(null);
1053	>	} catch (SecurityException giveUp) {
1054	>	return;
1055	>	}
1056		}
612	–	}
1057
1058	<	/**
1059	<	* Checks that the threads do not terminate within the default
1060	<	* millisecond delay of {@code timeoutMillis()}.
1061	<	*/
1062	<	void assertThreadsStayAlive(Thread... threads) {
1063	<	assertThreadsStayAlive(timeoutMillis(), threads);
1058	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1059	>	System.err.println("------ stacktrace dump start ------");
1060	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1061	>	final String name = info.getThreadName();
1062	>	String lockName;
1063	>	if ("Signal Dispatcher".equals(name))
1064	>	continue;
1065	>	if ("Reference Handler".equals(name)
1066	>	&& (lockName = info.getLockName()) != null
1067	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1068	>	continue;
1069	>	if ("Finalizer".equals(name)
1070	>	&& (lockName = info.getLockName()) != null
1071	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1072	>	continue;
1073	>	if ("checkForWedgedTest".equals(name))
1074	>	continue;
1075	>	System.err.print(info);
1076	>	}
1077	>	System.err.println("------ stacktrace dump end ------");
1078	>
1079	>	if (sm != null) System.setSecurityManager(sm);
1080		}
1081
1082		/**
1083	<	* Checks that the threads do not terminate within the given millisecond delay.
1083	>	* Checks that thread eventually enters the expected blocked thread state.
1084		*/
1085	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1086	<	try {
1087	<	// No need to optimize the failing case via Thread.join.
1088	<	delay(millis);
1089	<	for (Thread thread : threads)
1090	<	assertTrue(thread.isAlive());
1091	<	} catch (InterruptedException ie) {
1092	<	fail("Unexpected InterruptedException");
1085	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1086	>	// always sleep at least 1 ms, with high probability avoiding
1087	>	// transitory states
1088	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1089	>	try { delay(1); }
1090	>	catch (InterruptedException fail) {
1091	>	throw new AssertionError("Unexpected InterruptedException", fail);
1092	>	}
1093	>	Thread.State s = thread.getState();
1094	>	if (s == expected)
1095	>	return;
1096	>	else if (s == Thread.State.TERMINATED)
1097	>	fail("Unexpected thread termination");
1098		}
1099	+	fail("timed out waiting for thread to enter thread state " + expected);
1100		}
1101
1102		/**
#	Line 650 | Line 1116 | public class JSR166TestCase extends Test
1116		future.get(timeoutMillis, MILLISECONDS);
1117		shouldThrow();
1118		} catch (TimeoutException success) {
1119	<	} catch (Exception e) {
1120	<	threadUnexpectedException(e);
1119	>	} catch (Exception fail) {
1120	>	threadUnexpectedException(fail);
1121		} finally { future.cancel(true); }
1122		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1123		}
#	Line 671 | Line 1137 | public class JSR166TestCase extends Test
1137		}
1138
1139		/**
1140	+	* The maximum number of consecutive spurious wakeups we should
1141	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1142	+	*/
1143	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1144	+
1145	+	/**
1146		* The number of elements to place in collections, arrays, etc.
1147		*/
1148		public static final int SIZE = 20;
#	Line 695 | Line 1167 | public class JSR166TestCase extends Test
1167		public static final Integer m6  = new Integer(-6);
1168		public static final Integer m10 = new Integer(-10);
1169
698	–
1170		/**
1171		* Runs Runnable r with a security policy that permits precisely
1172		* the specified permissions.  If there is no current security
#	Line 775 | Line 1246 | public class JSR166TestCase extends Test
1246		}
1247		public void refresh() {}
1248		public String toString() {
1249	<	List<Permission> ps = new ArrayList<Permission>();
1249	>	List<Permission> ps = new ArrayList<>();
1250		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1251		ps.add(e.nextElement());
1252		return "AdjustablePolicy with permissions " + ps;
#	Line 803 | Line 1274 | public class JSR166TestCase extends Test
1274
1275		/**
1276		* Sleeps until the given time has elapsed.
1277	<	* Throws AssertionFailedError if interrupted.
1277	>	* Throws AssertionError if interrupted.
1278		*/
1279	<	void sleep(long millis) {
1279	>	static void sleep(long millis) {
1280		try {
1281		delay(millis);
1282	<	} catch (InterruptedException ie) {
1283	<	AssertionFailedError afe =
813	<	new AssertionFailedError("Unexpected InterruptedException");
814	<	afe.initCause(ie);
815	<	throw afe;
1282	>	} catch (InterruptedException fail) {
1283	>	throw new AssertionError("Unexpected InterruptedException", fail);
1284		}
1285		}
1286
#	Line 821 | Line 1289 | public class JSR166TestCase extends Test
1289		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1290		*/
1291		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1292	<	long startTime = System.nanoTime();
1292	>	long startTime = 0L;
1293		for (;;) {
1294		Thread.State s = thread.getState();
1295		if (s == Thread.State.BLOCKED ||
#	Line 830 | Line 1298 | public class JSR166TestCase extends Test
1298		return;
1299		else if (s == Thread.State.TERMINATED)
1300		fail("Unexpected thread termination");
1301	+	else if (startTime == 0L)
1302	+	startTime = System.nanoTime();
1303		else if (millisElapsedSince(startTime) > timeoutMillis) {
1304		threadAssertTrue(thread.isAlive());
1305	<	return;
1305	>	fail("timed out waiting for thread to enter wait state");
1306	>	}
1307	>	Thread.yield();
1308	>	}
1309	>	}
1310	>
1311	>	/**
1312	>	* Spin-waits up to the specified number of milliseconds for the given
1313	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1314	>	* and additionally satisfy the given condition.
1315	>	*/
1316	>	void waitForThreadToEnterWaitState(
1317	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1318	>	long startTime = 0L;
1319	>	for (;;) {
1320	>	Thread.State s = thread.getState();
1321	>	if (s == Thread.State.BLOCKED ||
1322	>	s == Thread.State.WAITING ||
1323	>	s == Thread.State.TIMED_WAITING) {
1324	>	try {
1325	>	if (waitingForGodot.call())
1326	>	return;
1327	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1328	>	}
1329	>	else if (s == Thread.State.TERMINATED)
1330	>	fail("Unexpected thread termination");
1331	>	else if (startTime == 0L)
1332	>	startTime = System.nanoTime();
1333	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1334	>	threadAssertTrue(thread.isAlive());
1335	>	fail("timed out waiting for thread to enter wait state");
1336		}
1337		Thread.yield();
1338		}
1339		}
1340
1341		/**
1342	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1343	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1342	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1343	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1344		*/
1345		void waitForThreadToEnterWaitState(Thread thread) {
1346		waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1347		}
1348
1349		/**
1350	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1351	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1352	+	* and additionally satisfy the given condition.
1353	+	*/
1354	+	void waitForThreadToEnterWaitState(
1355	+	Thread thread, Callable<Boolean> waitingForGodot) {
1356	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1357	+	}
1358	+
1359	+	/**
1360		* Returns the number of milliseconds since time given by
1361		* startNanoTime, which must have been previously returned from a
1362	<	* call to {@link System.nanoTime()}.
1362	>	* call to {@link System#nanoTime()}.
1363		*/
1364	<	long millisElapsedSince(long startNanoTime) {
1364	>	static long millisElapsedSince(long startNanoTime) {
1365		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1366		}
1367
1368	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1369	+	//         long startTime = System.nanoTime();
1370	+	//         try {
1371	+	//             r.run();
1372	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1373	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1374	+	//             throw new AssertionError("did not return promptly");
1375	+	//     }
1376	+
1377	+	//     void assertTerminatesPromptly(Runnable r) {
1378	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1379	+	//     }
1380	+
1381	+	/**
1382	+	* Checks that timed f.get() returns the expected value, and does not
1383	+	* wait for the timeout to elapse before returning.
1384	+	*/
1385	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1386	+	long startTime = System.nanoTime();
1387	+	try {
1388	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1389	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1390	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1391	+	throw new AssertionError("timed get did not return promptly");
1392	+	}
1393	+
1394	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1395	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1396	+	}
1397	+
1398		/**
1399		* Returns a new started daemon Thread running the given runnable.
1400		*/
#	Line 873 | Line 1413 | public class JSR166TestCase extends Test
1413		void awaitTermination(Thread t, long timeoutMillis) {
1414		try {
1415		t.join(timeoutMillis);
1416	<	} catch (InterruptedException ie) {
1417	<	threadUnexpectedException(ie);
1416	>	} catch (InterruptedException fail) {
1417	>	threadUnexpectedException(fail);
1418		} finally {
1419		if (t.getState() != Thread.State.TERMINATED) {
1420		t.interrupt();
1421	<	fail("Test timed out");
1421	>	threadFail("timed out waiting for thread to terminate");
1422		}
1423		}
1424		}
#	Line 900 | Line 1440 | public class JSR166TestCase extends Test
1440		public final void run() {
1441		try {
1442		realRun();
1443	<	} catch (Throwable t) {
1444	<	threadUnexpectedException(t);
1443	>	} catch (Throwable fail) {
1444	>	threadUnexpectedException(fail);
1445		}
1446		}
1447		}
#	Line 955 | Line 1495 | public class JSR166TestCase extends Test
1495		threadShouldThrow("InterruptedException");
1496		} catch (InterruptedException success) {
1497		threadAssertFalse(Thread.interrupted());
1498	<	} catch (Throwable t) {
1499	<	threadUnexpectedException(t);
1498	>	} catch (Throwable fail) {
1499	>	threadUnexpectedException(fail);
1500		}
1501		}
1502		}
#	Line 967 | Line 1507 | public class JSR166TestCase extends Test
1507		public final T call() {
1508		try {
1509		return realCall();
1510	<	} catch (Throwable t) {
1511	<	threadUnexpectedException(t);
1510	>	} catch (Throwable fail) {
1511	>	threadUnexpectedException(fail);
1512		return null;
1513		}
1514		}
#	Line 985 | Line 1525 | public class JSR166TestCase extends Test
1525		return result;
1526		} catch (InterruptedException success) {
1527		threadAssertFalse(Thread.interrupted());
1528	<	} catch (Throwable t) {
1529	<	threadUnexpectedException(t);
1528	>	} catch (Throwable fail) {
1529	>	threadUnexpectedException(fail);
1530		}
1531		return null;
1532		}
#	Line 1003 | Line 1543 | public class JSR166TestCase extends Test
1543		public static final String TEST_STRING = "a test string";
1544
1545		public static class StringTask implements Callable<String> {
1546	<	public String call() { return TEST_STRING; }
1546	>	final String value;
1547	>	public StringTask() { this(TEST_STRING); }
1548	>	public StringTask(String value) { this.value = value; }
1549	>	public String call() { return value; }
1550		}
1551
1552		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1016 | Line 1559 | public class JSR166TestCase extends Test
1559		}};
1560		}
1561
1562	<	public Runnable awaiter(final CountDownLatch latch) {
1562	>	public Runnable countDowner(final CountDownLatch latch) {
1563		return new CheckedRunnable() {
1564		public void realRun() throws InterruptedException {
1565	<	await(latch);
1565	>	latch.countDown();
1566		}};
1567		}
1568
1569	<	public void await(CountDownLatch latch) {
1569	>	class LatchAwaiter extends CheckedRunnable {
1570	>	static final int NEW = 0;
1571	>	static final int RUNNING = 1;
1572	>	static final int DONE = 2;
1573	>	final CountDownLatch latch;
1574	>	int state = NEW;
1575	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1576	>	public void realRun() throws InterruptedException {
1577	>	state = 1;
1578	>	await(latch);
1579	>	state = 2;
1580	>	}
1581	>	}
1582	>
1583	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1584	>	return new LatchAwaiter(latch);
1585	>	}
1586	>
1587	>	public void await(CountDownLatch latch, long timeoutMillis) {
1588		try {
1589	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1590	<	} catch (Throwable t) {
1591	<	threadUnexpectedException(t);
1589	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1590	>	fail("timed out waiting for CountDownLatch for "
1591	>	+ (timeoutMillis/1000) + " sec");
1592	>	} catch (Throwable fail) {
1593	>	threadUnexpectedException(fail);
1594		}
1595		}
1596
1597	+	public void await(CountDownLatch latch) {
1598	+	await(latch, LONG_DELAY_MS);
1599	+	}
1600	+
1601		public void await(Semaphore semaphore) {
1602		try {
1603	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1604	<	} catch (Throwable t) {
1605	<	threadUnexpectedException(t);
1603	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1604	>	fail("timed out waiting for Semaphore for "
1605	>	+ (LONG_DELAY_MS/1000) + " sec");
1606	>	} catch (Throwable fail) {
1607	>	threadUnexpectedException(fail);
1608	>	}
1609	>	}
1610	>
1611	>	public void await(CyclicBarrier barrier) {
1612	>	try {
1613	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1614	>	} catch (Throwable fail) {
1615	>	threadUnexpectedException(fail);
1616		}
1617		}
1618
#	Line 1053 | Line 1630 | public class JSR166TestCase extends Test
1630		//         long startTime = System.nanoTime();
1631		//         while (!flag.get()) {
1632		//             if (millisElapsedSince(startTime) > timeoutMillis)
1633	<	//                 throw new AssertionFailedError("timed out");
1633	>	//                 throw new AssertionError("timed out");
1634		//             Thread.yield();
1635		//         }
1636		//     }
#	Line 1062 | Line 1639 | public class JSR166TestCase extends Test
1639		public String call() { throw new NullPointerException(); }
1640		}
1641
1065	–	public static class CallableOne implements Callable<Integer> {
1066	–	public Integer call() { return one; }
1067	–	}
1068	–
1069	–	public class ShortRunnable extends CheckedRunnable {
1070	–	protected void realRun() throws Throwable {
1071	–	delay(SHORT_DELAY_MS);
1072	–	}
1073	–	}
1074	–
1075	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1076	–	protected void realRun() throws InterruptedException {
1077	–	delay(SHORT_DELAY_MS);
1078	–	}
1079	–	}
1080	–
1081	–	public class SmallRunnable extends CheckedRunnable {
1082	–	protected void realRun() throws Throwable {
1083	–	delay(SMALL_DELAY_MS);
1084	–	}
1085	–	}
1086	–
1642		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1643		protected void realRun() {
1644		try {
#	Line 1092 | Line 1647 | public class JSR166TestCase extends Test
1647		}
1648		}
1649
1095	–	public class SmallCallable extends CheckedCallable {
1096	–	protected Object realCall() throws InterruptedException {
1097	–	delay(SMALL_DELAY_MS);
1098	–	return Boolean.TRUE;
1099	–	}
1100	–	}
1101	–
1102	–	public class MediumRunnable extends CheckedRunnable {
1103	–	protected void realRun() throws Throwable {
1104	–	delay(MEDIUM_DELAY_MS);
1105	–	}
1106	–	}
1107	–
1108	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1109	–	protected void realRun() throws InterruptedException {
1110	–	delay(MEDIUM_DELAY_MS);
1111	–	}
1112	–	}
1113	–
1650		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1651		return new CheckedRunnable() {
1652		protected void realRun() {
#	Line 1120 | Line 1656 | public class JSR166TestCase extends Test
1656		}};
1657		}
1658
1123	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1124	–	protected void realRun() {
1125	–	try {
1126	–	delay(MEDIUM_DELAY_MS);
1127	–	} catch (InterruptedException ok) {}
1128	–	}
1129	–	}
1130	–
1131	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1132	–	protected void realRun() {
1133	–	try {
1134	–	delay(LONG_DELAY_MS);
1135	–	} catch (InterruptedException ok) {}
1136	–	}
1137	–	}
1138	–
1659		/**
1660		* For use as ThreadFactory in constructors
1661		*/
#	Line 1149 | Line 1669 | public class JSR166TestCase extends Test
1669		boolean isDone();
1670		}
1671
1152	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1153	–	return new TrackedRunnable() {
1154	–	private volatile boolean done = false;
1155	–	public boolean isDone() { return done; }
1156	–	public void run() {
1157	–	try {
1158	–	delay(timeoutMillis);
1159	–	done = true;
1160	–	} catch (InterruptedException ok) {}
1161	–	}
1162	–	};
1163	–	}
1164	–
1165	–	public static class TrackedShortRunnable implements Runnable {
1166	–	public volatile boolean done = false;
1167	–	public void run() {
1168	–	try {
1169	–	delay(SHORT_DELAY_MS);
1170	–	done = true;
1171	–	} catch (InterruptedException ok) {}
1172	–	}
1173	–	}
1174	–
1175	–	public static class TrackedSmallRunnable implements Runnable {
1176	–	public volatile boolean done = false;
1177	–	public void run() {
1178	–	try {
1179	–	delay(SMALL_DELAY_MS);
1180	–	done = true;
1181	–	} catch (InterruptedException ok) {}
1182	–	}
1183	–	}
1184	–
1185	–	public static class TrackedMediumRunnable implements Runnable {
1186	–	public volatile boolean done = false;
1187	–	public void run() {
1188	–	try {
1189	–	delay(MEDIUM_DELAY_MS);
1190	–	done = true;
1191	–	} catch (InterruptedException ok) {}
1192	–	}
1193	–	}
1194	–
1195	–	public static class TrackedLongRunnable implements Runnable {
1196	–	public volatile boolean done = false;
1197	–	public void run() {
1198	–	try {
1199	–	delay(LONG_DELAY_MS);
1200	–	done = true;
1201	–	} catch (InterruptedException ok) {}
1202	–	}
1203	–	}
1204	–
1672		public static class TrackedNoOpRunnable implements Runnable {
1673		public volatile boolean done = false;
1674		public void run() {
#	Line 1209 | Line 1676 | public class JSR166TestCase extends Test
1676		}
1677		}
1678
1212	–	public static class TrackedCallable implements Callable {
1213	–	public volatile boolean done = false;
1214	–	public Object call() {
1215	–	try {
1216	–	delay(SMALL_DELAY_MS);
1217	–	done = true;
1218	–	} catch (InterruptedException ok) {}
1219	–	return Boolean.TRUE;
1220	–	}
1221	–	}
1222	–
1679		/**
1680		* Analog of CheckedRunnable for RecursiveAction
1681		*/
1682		public abstract class CheckedRecursiveAction extends RecursiveAction {
1683		protected abstract void realCompute() throws Throwable;
1684
1685	<	public final void compute() {
1685	>	@Override protected final void compute() {
1686		try {
1687		realCompute();
1688	<	} catch (Throwable t) {
1689	<	threadUnexpectedException(t);
1688	>	} catch (Throwable fail) {
1689	>	threadUnexpectedException(fail);
1690		}
1691		}
1692		}
#	Line 1241 | Line 1697 | public class JSR166TestCase extends Test
1697		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1698		protected abstract T realCompute() throws Throwable;
1699
1700	<	public final T compute() {
1700	>	@Override protected final T compute() {
1701		try {
1702		return realCompute();
1703	<	} catch (Throwable t) {
1704	<	threadUnexpectedException(t);
1703	>	} catch (Throwable fail) {
1704	>	threadUnexpectedException(fail);
1705		return null;
1706		}
1707		}
#	Line 1261 | Line 1717 | public class JSR166TestCase extends Test
1717
1718		/**
1719		* A CyclicBarrier that uses timed await and fails with
1720	<	* AssertionFailedErrors instead of throwing checked exceptions.
1720	>	* AssertionErrors instead of throwing checked exceptions.
1721		*/
1722	<	public class CheckedBarrier extends CyclicBarrier {
1722	>	public static class CheckedBarrier extends CyclicBarrier {
1723		public CheckedBarrier(int parties) { super(parties); }
1724
1725		public int await() {
1726		try {
1727		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1728	<	} catch (TimeoutException e) {
1729	<	throw new AssertionFailedError("timed out");
1730	<	} catch (Exception e) {
1731	<	AssertionFailedError afe =
1276	<	new AssertionFailedError("Unexpected exception: " + e);
1277	<	afe.initCause(e);
1278	<	throw afe;
1728	>	} catch (TimeoutException timedOut) {
1729	>	throw new AssertionError("timed out");
1730	>	} catch (Exception fail) {
1731	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1732		}
1733		}
1734		}
#	Line 1286 | Line 1739 | public class JSR166TestCase extends Test
1739		assertEquals(0, q.size());
1740		assertNull(q.peek());
1741		assertNull(q.poll());
1742	<	assertNull(q.poll(0, MILLISECONDS));
1742	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1743		assertEquals(q.toString(), "[]");
1744		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1745		assertFalse(q.iterator().hasNext());
#	Line 1302 | Line 1755 | public class JSR166TestCase extends Test
1755		q.remove();
1756		shouldThrow();
1757		} catch (NoSuchElementException success) {}
1758	<	} catch (InterruptedException ie) {
1306	<	threadUnexpectedException(ie);
1307	<	}
1758	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1759		}
1760
1761		void assertSerialEquals(Object x, Object y) {
#	Line 1323 | Line 1774 | public class JSR166TestCase extends Test
1774		oos.flush();
1775		oos.close();
1776		return bos.toByteArray();
1777	<	} catch (Throwable t) {
1778	<	threadUnexpectedException(t);
1777	>	} catch (Throwable fail) {
1778	>	threadUnexpectedException(fail);
1779		return new byte[0];
1780		}
1781		}
1782
1783	+	void assertImmutable(final Object o) {
1784	+	if (o instanceof Collection) {
1785	+	assertThrows(
1786	+	UnsupportedOperationException.class,
1787	+	new Runnable() { public void run() {
1788	+	((Collection) o).add(null);}});
1789	+	}
1790	+	}
1791	+
1792		@SuppressWarnings("unchecked")
1793		<T> T serialClone(T o) {
1794		try {
1795		ObjectInputStream ois = new ObjectInputStream
1796		(new ByteArrayInputStream(serialBytes(o)));
1797		T clone = (T) ois.readObject();
1798	+	if (o == clone) assertImmutable(o);
1799		assertSame(o.getClass(), clone.getClass());
1800		return clone;
1801	<	} catch (Throwable t) {
1802	<	threadUnexpectedException(t);
1801	>	} catch (Throwable fail) {
1802	>	threadUnexpectedException(fail);
1803		return null;
1804		}
1805		}
1806	+
1807	+	/**
1808	+	* A version of serialClone that leaves error handling (for
1809	+	* e.g. NotSerializableException) up to the caller.
1810	+	*/
1811	+	@SuppressWarnings("unchecked")
1812	+	<T> T serialClonePossiblyFailing(T o)
1813	+	throws ReflectiveOperationException, java.io.IOException {
1814	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1815	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1816	+	oos.writeObject(o);
1817	+	oos.flush();
1818	+	oos.close();
1819	+	ObjectInputStream ois = new ObjectInputStream
1820	+	(new ByteArrayInputStream(bos.toByteArray()));
1821	+	T clone = (T) ois.readObject();
1822	+	if (o == clone) assertImmutable(o);
1823	+	assertSame(o.getClass(), clone.getClass());
1824	+	return clone;
1825	+	}
1826	+
1827	+	/**
1828	+	* If o implements Cloneable and has a public clone method,
1829	+	* returns a clone of o, else null.
1830	+	*/
1831	+	@SuppressWarnings("unchecked")
1832	+	<T> T cloneableClone(T o) {
1833	+	if (!(o instanceof Cloneable)) return null;
1834	+	final T clone;
1835	+	try {
1836	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1837	+	} catch (NoSuchMethodException ok) {
1838	+	return null;
1839	+	} catch (ReflectiveOperationException unexpected) {
1840	+	throw new Error(unexpected);
1841	+	}
1842	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1843	+	assertSame(o.getClass(), clone.getClass());
1844	+	return clone;
1845	+	}
1846	+
1847	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1848	+	Runnable... throwingActions) {
1849	+	for (Runnable throwingAction : throwingActions) {
1850	+	boolean threw = false;
1851	+	try { throwingAction.run(); }
1852	+	catch (Throwable t) {
1853	+	threw = true;
1854	+	if (!expectedExceptionClass.isInstance(t))
1855	+	throw new AssertionError(
1856	+	"Expected " + expectedExceptionClass.getName() +
1857	+	", got " + t.getClass().getName(),
1858	+	t);
1859	+	}
1860	+	if (!threw)
1861	+	shouldThrow(expectedExceptionClass.getName());
1862	+	}
1863	+	}
1864	+
1865	+	public void assertIteratorExhausted(Iterator<?> it) {
1866	+	try {
1867	+	it.next();
1868	+	shouldThrow();
1869	+	} catch (NoSuchElementException success) {}
1870	+	assertFalse(it.hasNext());
1871	+	}
1872	+
1873	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1874	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1875	+	}
1876	+
1877	+	public Runnable runnableThrowing(final RuntimeException ex) {
1878	+	return new Runnable() { public void run() { throw ex; }};
1879	+	}
1880	+
1881	+	/** A reusable thread pool to be shared by tests. */
1882	+	static final ExecutorService cachedThreadPool =
1883	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1884	+	1000L, MILLISECONDS,
1885	+	new SynchronousQueue<Runnable>());
1886	+
1887	+	static <T> void shuffle(T[] array) {
1888	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1889	+	}
1890	+
1891	+	/**
1892	+	* Returns the same String as would be returned by {@link
1893	+	* Object#toString}, whether or not the given object's class
1894	+	* overrides toString().
1895	+	*
1896	+	* @see System#identityHashCode
1897	+	*/
1898	+	static String identityString(Object x) {
1899	+	return x.getClass().getName()
1900	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1901	+	}
1902	+
1903	+	// --- Shared assertions for Executor tests ---
1904	+
1905	+	/**
1906	+	* Returns maximum number of tasks that can be submitted to given
1907	+	* pool (with bounded queue) before saturation (when submission
1908	+	* throws RejectedExecutionException).
1909	+	*/
1910	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1911	+	BlockingQueue<Runnable> q = pool.getQueue();
1912	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1913	+	}
1914	+
1915	+	@SuppressWarnings("FutureReturnValueIgnored")
1916	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1917	+	try {
1918	+	e.execute((Runnable) null);
1919	+	shouldThrow();
1920	+	} catch (NullPointerException success) {}
1921	+
1922	+	if (! (e instanceof ExecutorService)) return;
1923	+	ExecutorService es = (ExecutorService) e;
1924	+	try {
1925	+	es.submit((Runnable) null);
1926	+	shouldThrow();
1927	+	} catch (NullPointerException success) {}
1928	+	try {
1929	+	es.submit((Runnable) null, Boolean.TRUE);
1930	+	shouldThrow();
1931	+	} catch (NullPointerException success) {}
1932	+	try {
1933	+	es.submit((Callable) null);
1934	+	shouldThrow();
1935	+	} catch (NullPointerException success) {}
1936	+
1937	+	if (! (e instanceof ScheduledExecutorService)) return;
1938	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1939	+	try {
1940	+	ses.schedule((Runnable) null,
1941	+	randomTimeout(), randomTimeUnit());
1942	+	shouldThrow();
1943	+	} catch (NullPointerException success) {}
1944	+	try {
1945	+	ses.schedule((Callable) null,
1946	+	randomTimeout(), randomTimeUnit());
1947	+	shouldThrow();
1948	+	} catch (NullPointerException success) {}
1949	+	try {
1950	+	ses.scheduleAtFixedRate((Runnable) null,
1951	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1952	+	shouldThrow();
1953	+	} catch (NullPointerException success) {}
1954	+	try {
1955	+	ses.scheduleWithFixedDelay((Runnable) null,
1956	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1957	+	shouldThrow();
1958	+	} catch (NullPointerException success) {}
1959	+	}
1960	+
1961	+	void setRejectedExecutionHandler(
1962	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1963	+	p.setRejectedExecutionHandler(handler);
1964	+	assertSame(handler, p.getRejectedExecutionHandler());
1965	+	}
1966	+
1967	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1968	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1969	+	final long savedTaskCount = p.getTaskCount();
1970	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1971	+	final int savedQueueSize = p.getQueue().size();
1972	+	final boolean stock = (p.getClass().getClassLoader() == null);
1973	+
1974	+	Runnable r = () -> {};
1975	+	Callable<Boolean> c = () -> Boolean.TRUE;
1976	+
1977	+	class Recorder implements RejectedExecutionHandler {
1978	+	public volatile Runnable r = null;
1979	+	public volatile ThreadPoolExecutor p = null;
1980	+	public void reset() { r = null; p = null; }
1981	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1982	+	assertNull(this.r);
1983	+	assertNull(this.p);
1984	+	this.r = r;
1985	+	this.p = p;
1986	+	}
1987	+	}
1988	+
1989	+	// check custom handler is invoked exactly once per task
1990	+	Recorder recorder = new Recorder();
1991	+	setRejectedExecutionHandler(p, recorder);
1992	+	for (int i = 2; i--> 0; ) {
1993	+	recorder.reset();
1994	+	p.execute(r);
1995	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
1996	+	assertSame(r, recorder.r);
1997	+	assertSame(p, recorder.p);
1998	+
1999	+	recorder.reset();
2000	+	assertFalse(p.submit(r).isDone());
2001	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2002	+	assertSame(p, recorder.p);
2003	+
2004	+	recorder.reset();
2005	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2006	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2007	+	assertSame(p, recorder.p);
2008	+
2009	+	recorder.reset();
2010	+	assertFalse(p.submit(c).isDone());
2011	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2012	+	assertSame(p, recorder.p);
2013	+
2014	+	if (p instanceof ScheduledExecutorService) {
2015	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2016	+	ScheduledFuture<?> future;
2017	+
2018	+	recorder.reset();
2019	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2020	+	assertFalse(future.isDone());
2021	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2022	+	assertSame(p, recorder.p);
2023	+
2024	+	recorder.reset();
2025	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2026	+	assertFalse(future.isDone());
2027	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2028	+	assertSame(p, recorder.p);
2029	+
2030	+	recorder.reset();
2031	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2032	+	assertFalse(future.isDone());
2033	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2034	+	assertSame(p, recorder.p);
2035	+
2036	+	recorder.reset();
2037	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2038	+	assertFalse(future.isDone());
2039	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2040	+	assertSame(p, recorder.p);
2041	+	}
2042	+	}
2043	+
2044	+	// Checking our custom handler above should be sufficient, but
2045	+	// we add some integration tests of standard handlers.
2046	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2047	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2048	+
2049	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2050	+	try {
2051	+	p.execute(setThread);
2052	+	shouldThrow();
2053	+	} catch (RejectedExecutionException success) {}
2054	+	assertNull(thread.get());
2055	+
2056	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2057	+	p.execute(setThread);
2058	+	assertNull(thread.get());
2059	+
2060	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2061	+	p.execute(setThread);
2062	+	if (p.isShutdown())
2063	+	assertNull(thread.get());
2064	+	else
2065	+	assertSame(Thread.currentThread(), thread.get());
2066	+
2067	+	setRejectedExecutionHandler(p, savedHandler);
2068	+
2069	+	// check that pool was not perturbed by handlers
2070	+	assertEquals(savedTaskCount, p.getTaskCount());
2071	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2072	+	assertEquals(savedQueueSize, p.getQueue().size());
2073	+	}
2074		}

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