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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.20 by dl, Sun Jan 11 23:20:21 2004 UTC vs.
Revision 1.206 by jsr166, Tue Oct 25 01:32:55 2016 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
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests
12	>	* @modules java.management
13	>	* @build *
14	>	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
15	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
16	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 -Djava.util.secureRandomSeed=true JSR166TestCase
17	>	*/
18	>
19	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
20	>	import static java.util.concurrent.TimeUnit.MINUTES;
21	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
22	>
23	>	import java.io.ByteArrayInputStream;
24	>	import java.io.ByteArrayOutputStream;
25	>	import java.io.ObjectInputStream;
26	>	import java.io.ObjectOutputStream;
27	>	import java.lang.management.ManagementFactory;
28	>	import java.lang.management.ThreadInfo;
29	>	import java.lang.management.ThreadMXBean;
30	>	import java.lang.reflect.Constructor;
31	>	import java.lang.reflect.Method;
32	>	import java.lang.reflect.Modifier;
33	>	import java.nio.file.Files;
34	>	import java.nio.file.Paths;
35	>	import java.security.CodeSource;
36	>	import java.security.Permission;
37	>	import java.security.PermissionCollection;
38	>	import java.security.Permissions;
39	>	import java.security.Policy;
40	>	import java.security.ProtectionDomain;
41	>	import java.security.SecurityPermission;
42	>	import java.util.ArrayList;
43	>	import java.util.Arrays;
44	>	import java.util.Collections;
45	>	import java.util.Date;
46	>	import java.util.Enumeration;
47	>	import java.util.Iterator;
48	>	import java.util.List;
49	>	import java.util.NoSuchElementException;
50	>	import java.util.PropertyPermission;
51	>	import java.util.concurrent.BlockingQueue;
52	>	import java.util.concurrent.Callable;
53	>	import java.util.concurrent.CountDownLatch;
54	>	import java.util.concurrent.CyclicBarrier;
55	>	import java.util.concurrent.ExecutionException;
56	>	import java.util.concurrent.Executors;
57	>	import java.util.concurrent.ExecutorService;
58	>	import java.util.concurrent.ForkJoinPool;
59	>	import java.util.concurrent.Future;
60	>	import java.util.concurrent.RecursiveAction;
61	>	import java.util.concurrent.RecursiveTask;
62	>	import java.util.concurrent.RejectedExecutionHandler;
63	>	import java.util.concurrent.Semaphore;
64	>	import java.util.concurrent.SynchronousQueue;
65	>	import java.util.concurrent.ThreadFactory;
66	>	import java.util.concurrent.ThreadLocalRandom;
67	>	import java.util.concurrent.ThreadPoolExecutor;
68	>	import java.util.concurrent.TimeoutException;
69	>	import java.util.concurrent.atomic.AtomicBoolean;
70	>	import java.util.concurrent.atomic.AtomicReference;
71	>	import java.util.regex.Matcher;
72	>	import java.util.regex.Pattern;
73	>
74	>	import junit.framework.AssertionFailedError;
75	>	import junit.framework.Test;
76	>	import junit.framework.TestCase;
77	>	import junit.framework.TestResult;
78	>	import junit.framework.TestSuite;
79
80		/**
81		* Base class for JSR166 Junit TCK tests.  Defines some constants,
82		* utility methods and classes, as well as a simple framework for
83		* helping to make sure that assertions failing in generated threads
84		* cause the associated test that generated them to itself fail (which
85	<	* JUnit doe not otherwise arrange).  The rules for creating such
85	>	* JUnit does not otherwise arrange).  The rules for creating such
86		* tests are:
87		*
88		* <ol>
89		*
90	<	* <li> All assertions in code running in generated threads must use
91	<	* the forms {@link #threadFail} , {@link #threadAssertTrue} {@link
90	>	* <li>All assertions in code running in generated threads must use
91	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
92		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
93	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
93	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
94		* particularly recommended) for other code to use these forms too.
95		* Only the most typically used JUnit assertion methods are defined
96	<	* this way, but enough to live with.</li>
96	>	* this way, but enough to live with.
97		*
98	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
99	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
98	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
99	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
100		* them. These methods are used to clear and check for thread
101	<	* assertion failures.</li>
101	>	* assertion failures.
102		*
103	<	* <li>All delays and timeouts must use one of the constants <tt>
104	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
105	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
103	>	* <li>All delays and timeouts must use one of the constants {@code
104	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
105	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
106		* discriminable from zero time, and always allows enough time for the
107		* small amounts of computation (creating a thread, calling a few
108		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
109		* is always discriminable as larger than SHORT and smaller than
110		* MEDIUM.  And so on. These constants are set to conservative values,
111		* but even so, if there is ever any doubt, they can all be increased
112	<	* in one spot to rerun tests on slower platforms</li>
112	>	* in one spot to rerun tests on slower platforms.
113		*
114	<	* <li> All threads generated must be joined inside each test case
115	<	* method (or <tt>fail</tt> to do so) before returning from the
116	<	* method. The <tt> joinPool</tt> method can be used to do this when
117	<	* using Executors.</li>
114	>	* <li>All threads generated must be joined inside each test case
115	>	* method (or {@code fail} to do so) before returning from the
116	>	* method. The {@code joinPool} method can be used to do this when
117	>	* using Executors.
118		*
119		* </ol>
120		*
121	<	* <p> <b>Other notes</b>
121	>	* <p><b>Other notes</b>
122		* <ul>
123		*
124	<	* <li> Usually, there is one testcase method per JSR166 method
124	>	* <li>Usually, there is one testcase method per JSR166 method
125		* covering "normal" operation, and then as many exception-testing
126		* methods as there are exceptions the method can throw. Sometimes
127		* there are multiple tests per JSR166 method when the different
128		* "normal" behaviors differ significantly. And sometimes testcases
129	<	* cover multiple methods when they cannot be tested in
130	<	* isolation.</li>
131	<	*
67	<	* <li> The documentation style for testcases is to provide as javadoc
129	>	* cover multiple methods when they cannot be tested in isolation.
130	>	*
131	>	* <li>The documentation style for testcases is to provide as javadoc
132		* a simple sentence or two describing the property that the testcase
133		* method purports to test. The javadocs do not say anything about how
134	<	* the property is tested. To find out, read the code.</li>
134	>	* the property is tested. To find out, read the code.
135		*
136	<	* <li> These tests are "conformance tests", and do not attempt to
136	>	* <li>These tests are "conformance tests", and do not attempt to
137		* test throughput, latency, scalability or other performance factors
138		* (see the separate "jtreg" tests for a set intended to check these
139		* for the most central aspects of functionality.) So, most tests use
140		* the smallest sensible numbers of threads, collection sizes, etc
141	<	* needed to check basic conformance.</li>
141	>	* needed to check basic conformance.
142		*
143		* <li>The test classes currently do not declare inclusion in
144		* any particular package to simplify things for people integrating
145	<	* them in TCK test suites.</li>
145	>	* them in TCK test suites.
146		*
147	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
148	<	* runs all JSR166 unit tests.</li>
147	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
148	>	* runs all JSR166 unit tests.
149		*
150		* </ul>
151		*/
152		public class JSR166TestCase extends TestCase {
153	+	private static final boolean useSecurityManager =
154	+	Boolean.getBoolean("jsr166.useSecurityManager");
155	+
156	+	protected static final boolean expensiveTests =
157	+	Boolean.getBoolean("jsr166.expensiveTests");
158	+
159	+	/**
160	+	* If true, also run tests that are not part of the official tck
161	+	* because they test unspecified implementation details.
162	+	*/
163	+	protected static final boolean testImplementationDetails =
164	+	Boolean.getBoolean("jsr166.testImplementationDetails");
165	+
166	+	/**
167	+	* If true, report on stdout all "slow" tests, that is, ones that
168	+	* take more than profileThreshold milliseconds to execute.
169	+	*/
170	+	private static final boolean profileTests =
171	+	Boolean.getBoolean("jsr166.profileTests");
172	+
173	+	/**
174	+	* The number of milliseconds that tests are permitted for
175	+	* execution without being reported, when profileTests is set.
176	+	*/
177	+	private static final long profileThreshold =
178	+	Long.getLong("jsr166.profileThreshold", 100);
179	+
180	+	/**
181	+	* The number of repetitions per test (for tickling rare bugs).
182	+	*/
183	+	private static final int runsPerTest =
184	+	Integer.getInteger("jsr166.runsPerTest", 1);
185	+
186	+	/**
187	+	* The number of repetitions of the test suite (for finding leaks?).
188	+	*/
189	+	private static final int suiteRuns =
190	+	Integer.getInteger("jsr166.suiteRuns", 1);
191	+
192	+	/**
193	+	* Returns the value of the system property, or NaN if not defined.
194	+	*/
195	+	private static float systemPropertyValue(String name) {
196	+	String floatString = System.getProperty(name);
197	+	if (floatString == null)
198	+	return Float.NaN;
199	+	try {
200	+	return Float.parseFloat(floatString);
201	+	} catch (NumberFormatException ex) {
202	+	throw new IllegalArgumentException(
203	+	String.format("Bad float value in system property %s=%s",
204	+	name, floatString));
205	+	}
206	+	}
207	+
208		/**
209	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
210	<	*/
211	<	public static void main (String[] args) {
212	<	int iters = 1;
213	<	if (args.length > 0)
214	<	iters = Integer.parseInt(args[0]);
215	<	Test s = suite();
216	<	for (int i = 0; i < iters; ++i)
217	<	junit.textui.TestRunner.run (s);
209	>	* The scaling factor to apply to standard delays used in tests.
210	>	* May be initialized from any of:
211	>	* - the "jsr166.delay.factor" system property
212	>	* - the "test.timeout.factor" system property (as used by jtreg)
213	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
214	>	* - hard-coded fuzz factor when using a known slowpoke VM
215	>	*/
216	>	private static final float delayFactor = delayFactor();
217	>
218	>	private static float delayFactor() {
219	>	float x;
220	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
221	>	return x;
222	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
223	>	return x;
224	>	String prop = System.getProperty("java.vm.version");
225	>	if (prop != null && prop.matches(".*debug.*"))
226	>	return 4.0f; // How much slower is fastdebug than product?!
227	>	return 1.0f;
228	>	}
229	>
230	>	public JSR166TestCase() { super(); }
231	>	public JSR166TestCase(String name) { super(name); }
232	>
233	>	/**
234	>	* A filter for tests to run, matching strings of the form
235	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
236	>	* Usefully combined with jsr166.runsPerTest.
237	>	*/
238	>	private static final Pattern methodFilter = methodFilter();
239	>
240	>	private static Pattern methodFilter() {
241	>	String regex = System.getProperty("jsr166.methodFilter");
242	>	return (regex == null) ? null : Pattern.compile(regex);
243	>	}
244	>
245	>	// Instrumentation to debug very rare, but very annoying hung test runs.
246	>	static volatile TestCase currentTestCase;
247	>	// static volatile int currentRun = 0;
248	>	static {
249	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
250	>	// Avoid spurious reports with enormous runsPerTest.
251	>	// A single test case run should never take more than 1 second.
252	>	// But let's cap it at the high end too ...
253	>	final int timeoutMinutes =
254	>	Math.min(15, Math.max(runsPerTest / 60, 1));
255	>	for (TestCase lastTestCase = currentTestCase;;) {
256	>	try { MINUTES.sleep(timeoutMinutes); }
257	>	catch (InterruptedException unexpected) { break; }
258	>	if (lastTestCase == currentTestCase) {
259	>	System.err.printf(
260	>	"Looks like we're stuck running test: %s%n",
261	>	lastTestCase);
262	>	//                     System.err.printf(
263	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
264	>	//                         lastTestCase, currentRun, runsPerTest);
265	>	//                     System.err.println("availableProcessors=" +
266	>	//                         Runtime.getRuntime().availableProcessors());
267	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
268	>	dumpTestThreads();
269	>	// one stack dump is probably enough; more would be spam
270	>	break;
271	>	}
272	>	lastTestCase = currentTestCase;
273	>	}}};
274	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
275	>	thread.setDaemon(true);
276	>	thread.start();
277	>	}
278	>
279	>	//     public static String cpuModel() {
280	>	//         try {
281	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
282	>	//                 .matcher(new String(
283	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
284	>	//             matcher.find();
285	>	//             return matcher.group(1);
286	>	//         } catch (Exception ex) { return null; }
287	>	//     }
288	>
289	>	public void runBare() throws Throwable {
290	>	currentTestCase = this;
291	>	if (methodFilter == null
292	>	|| methodFilter.matcher(toString()).find())
293	>	super.runBare();
294	>	}
295	>
296	>	protected void runTest() throws Throwable {
297	>	for (int i = 0; i < runsPerTest; i++) {
298	>	// currentRun = i;
299	>	if (profileTests)
300	>	runTestProfiled();
301	>	else
302	>	super.runTest();
303	>	}
304	>	}
305	>
306	>	protected void runTestProfiled() throws Throwable {
307	>	for (int i = 0; i < 2; i++) {
308	>	long startTime = System.nanoTime();
309	>	super.runTest();
310	>	long elapsedMillis = millisElapsedSince(startTime);
311	>	if (elapsedMillis < profileThreshold)
312	>	break;
313	>	// Never report first run of any test; treat it as a
314	>	// warmup run, notably to trigger all needed classloading,
315	>	if (i > 0)
316	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
317	>	}
318	>	}
319	>
320	>	/**
321	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
322	>	*/
323	>	public static void main(String[] args) {
324	>	main(suite(), args);
325	>	}
326	>
327	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
328	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
329	>	long runTime;
330	>	public void startTest(Test test) {}
331	>	protected void printHeader(long runTime) {
332	>	this.runTime = runTime; // defer printing for later
333	>	}
334	>	protected void printFooter(TestResult result) {
335	>	if (result.wasSuccessful()) {
336	>	getWriter().println("OK (" + result.runCount() + " tests)"
337	>	+ "  Time: " + elapsedTimeAsString(runTime));
338	>	} else {
339	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
340	>	super.printFooter(result);
341	>	}
342	>	}
343	>	}
344	>
345	>	/**
346	>	* Returns a TestRunner that doesn't bother with unnecessary
347	>	* fluff, like printing a "." for each test case.
348	>	*/
349	>	static junit.textui.TestRunner newPithyTestRunner() {
350	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
351	>	runner.setPrinter(new PithyResultPrinter(System.out));
352	>	return runner;
353	>	}
354	>
355	>	/**
356	>	* Runs all unit tests in the given test suite.
357	>	* Actual behavior influenced by jsr166.* system properties.
358	>	*/
359	>	static void main(Test suite, String[] args) {
360	>	if (useSecurityManager) {
361	>	System.err.println("Setting a permissive security manager");
362	>	Policy.setPolicy(permissivePolicy());
363	>	System.setSecurityManager(new SecurityManager());
364	>	}
365	>	for (int i = 0; i < suiteRuns; i++) {
366	>	TestResult result = newPithyTestRunner().doRun(suite);
367	>	if (!result.wasSuccessful())
368	>	System.exit(1);
369	>	System.gc();
370	>	System.runFinalization();
371	>	}
372	>	}
373	>
374	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
375	>	TestSuite suite = new TestSuite();
376	>	for (Object suiteOrClass : suiteOrClasses) {
377	>	if (suiteOrClass instanceof TestSuite)
378	>	suite.addTest((TestSuite) suiteOrClass);
379	>	else if (suiteOrClass instanceof Class)
380	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
381	>	else
382	>	throw new ClassCastException("not a test suite or class");
383	>	}
384	>	return suite;
385	>	}
386	>
387	>	public static void addNamedTestClasses(TestSuite suite,
388	>	String... testClassNames) {
389	>	for (String testClassName : testClassNames) {
390	>	try {
391	>	Class<?> testClass = Class.forName(testClassName);
392	>	Method m = testClass.getDeclaredMethod("suite",
393	>	new Class<?>[0]);
394	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
395	>	} catch (Exception e) {
396	>	throw new Error("Missing test class", e);
397	>	}
398	>	}
399	>	}
400	>
401	>	public static final double JAVA_CLASS_VERSION;
402	>	public static final String JAVA_SPECIFICATION_VERSION;
403	>	static {
404	>	try {
405	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
406	>	new java.security.PrivilegedAction<Double>() {
407	>	public Double run() {
408	>	return Double.valueOf(System.getProperty("java.class.version"));}});
409	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
410	>	new java.security.PrivilegedAction<String>() {
411	>	public String run() {
412	>	return System.getProperty("java.specification.version");}});
413	>	} catch (Throwable t) {
414	>	throw new Error(t);
415	>	}
416	>	}
417	>
418	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
419	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
420	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
421	>	public static boolean atLeastJava9() {
422	>	return JAVA_CLASS_VERSION >= 53.0
423	>	// As of 2015-09, java9 still uses 52.0 class file version
424	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
425	>	}
426	>	public static boolean atLeastJava10() {
427	>	return JAVA_CLASS_VERSION >= 54.0
428	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
429		}
430
431		/**
432	<	* Collects all JSR166 unit tests as one suite
433	<	*/
434	<	public static Test suite ( ) {
435	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
436	<
437	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
438	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
439	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
440	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
441	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
442	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
443	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
444	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
445	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
446	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
447	<	suite.addTest(new TestSuite(AtomicLongTest.class));
448	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
449	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
450	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
451	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
452	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
453	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
454	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
455	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
456	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
457	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
458	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
459	<	suite.addTest(new TestSuite(DelayQueueTest.class));
460	<	suite.addTest(new TestSuite(ExchangerTest.class));
461	<	suite.addTest(new TestSuite(ExecutorsTest.class));
462	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
463	<	suite.addTest(new TestSuite(FutureTaskTest.class));
464	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
465	<	suite.addTest(new TestSuite(LinkedListTest.class));
466	<	suite.addTest(new TestSuite(LockSupportTest.class));
467	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
468	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
469	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
470	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
471	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
472	<	suite.addTest(new TestSuite(SemaphoreTest.class));
473	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
474	<	suite.addTest(new TestSuite(SystemTest.class));
475	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
476	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
477	<	suite.addTest(new TestSuite(ThreadTest.class));
478	<	suite.addTest(new TestSuite(TimeUnitTest.class));
479	<
432	>	* Collects all JSR166 unit tests as one suite.
433	>	*/
434	>	public static Test suite() {
435	>	// Java7+ test classes
436	>	TestSuite suite = newTestSuite(
437	>	ForkJoinPoolTest.suite(),
438	>	ForkJoinTaskTest.suite(),
439	>	RecursiveActionTest.suite(),
440	>	RecursiveTaskTest.suite(),
441	>	LinkedTransferQueueTest.suite(),
442	>	PhaserTest.suite(),
443	>	ThreadLocalRandomTest.suite(),
444	>	AbstractExecutorServiceTest.suite(),
445	>	AbstractQueueTest.suite(),
446	>	AbstractQueuedSynchronizerTest.suite(),
447	>	AbstractQueuedLongSynchronizerTest.suite(),
448	>	ArrayBlockingQueueTest.suite(),
449	>	ArrayDequeTest.suite(),
450	>	ArrayListTest.suite(),
451	>	AtomicBooleanTest.suite(),
452	>	AtomicIntegerArrayTest.suite(),
453	>	AtomicIntegerFieldUpdaterTest.suite(),
454	>	AtomicIntegerTest.suite(),
455	>	AtomicLongArrayTest.suite(),
456	>	AtomicLongFieldUpdaterTest.suite(),
457	>	AtomicLongTest.suite(),
458	>	AtomicMarkableReferenceTest.suite(),
459	>	AtomicReferenceArrayTest.suite(),
460	>	AtomicReferenceFieldUpdaterTest.suite(),
461	>	AtomicReferenceTest.suite(),
462	>	AtomicStampedReferenceTest.suite(),
463	>	ConcurrentHashMapTest.suite(),
464	>	ConcurrentLinkedDequeTest.suite(),
465	>	ConcurrentLinkedQueueTest.suite(),
466	>	ConcurrentSkipListMapTest.suite(),
467	>	ConcurrentSkipListSubMapTest.suite(),
468	>	ConcurrentSkipListSetTest.suite(),
469	>	ConcurrentSkipListSubSetTest.suite(),
470	>	CopyOnWriteArrayListTest.suite(),
471	>	CopyOnWriteArraySetTest.suite(),
472	>	CountDownLatchTest.suite(),
473	>	CountedCompleterTest.suite(),
474	>	CyclicBarrierTest.suite(),
475	>	DelayQueueTest.suite(),
476	>	EntryTest.suite(),
477	>	ExchangerTest.suite(),
478	>	ExecutorsTest.suite(),
479	>	ExecutorCompletionServiceTest.suite(),
480	>	FutureTaskTest.suite(),
481	>	LinkedBlockingDequeTest.suite(),
482	>	LinkedBlockingQueueTest.suite(),
483	>	LinkedListTest.suite(),
484	>	LockSupportTest.suite(),
485	>	PriorityBlockingQueueTest.suite(),
486	>	PriorityQueueTest.suite(),
487	>	ReentrantLockTest.suite(),
488	>	ReentrantReadWriteLockTest.suite(),
489	>	ScheduledExecutorTest.suite(),
490	>	ScheduledExecutorSubclassTest.suite(),
491	>	SemaphoreTest.suite(),
492	>	SynchronousQueueTest.suite(),
493	>	SystemTest.suite(),
494	>	ThreadLocalTest.suite(),
495	>	ThreadPoolExecutorTest.suite(),
496	>	ThreadPoolExecutorSubclassTest.suite(),
497	>	ThreadTest.suite(),
498	>	TimeUnitTest.suite(),
499	>	TreeMapTest.suite(),
500	>	TreeSetTest.suite(),
501	>	TreeSubMapTest.suite(),
502	>	TreeSubSetTest.suite());
503	>
504	>	// Java8+ test classes
505	>	if (atLeastJava8()) {
506	>	String[] java8TestClassNames = {
507	>	"ArrayDeque8Test",
508	>	"Atomic8Test",
509	>	"CompletableFutureTest",
510	>	"ConcurrentHashMap8Test",
511	>	"CountedCompleter8Test",
512	>	"DoubleAccumulatorTest",
513	>	"DoubleAdderTest",
514	>	"ForkJoinPool8Test",
515	>	"ForkJoinTask8Test",
516	>	"LongAccumulatorTest",
517	>	"LongAdderTest",
518	>	"SplittableRandomTest",
519	>	"StampedLockTest",
520	>	"SubmissionPublisherTest",
521	>	"ThreadLocalRandom8Test",
522	>	"TimeUnit8Test",
523	>	};
524	>	addNamedTestClasses(suite, java8TestClassNames);
525	>	}
526	>
527	>	// Java9+ test classes
528	>	if (atLeastJava9()) {
529	>	String[] java9TestClassNames = {
530	>	"AtomicBoolean9Test",
531	>	"AtomicInteger9Test",
532	>	"AtomicIntegerArray9Test",
533	>	"AtomicLong9Test",
534	>	"AtomicLongArray9Test",
535	>	"AtomicReference9Test",
536	>	"AtomicReferenceArray9Test",
537	>	"ExecutorCompletionService9Test",
538	>	};
539	>	addNamedTestClasses(suite, java9TestClassNames);
540	>	}
541	>
542		return suite;
543		}
544
545	+	/** Returns list of junit-style test method names in given class. */
546	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
547	+	Method[] methods = testClass.getDeclaredMethods();
548	+	ArrayList<String> names = new ArrayList<String>(methods.length);
549	+	for (Method method : methods) {
550	+	if (method.getName().startsWith("test")
551	+	&& Modifier.isPublic(method.getModifiers())
552	+	// method.getParameterCount() requires jdk8+
553	+	&& method.getParameterTypes().length == 0) {
554	+	names.add(method.getName());
555	+	}
556	+	}
557	+	return names;
558	+	}
559	+
560	+	/**
561	+	* Returns junit-style testSuite for the given test class, but
562	+	* parameterized by passing extra data to each test.
563	+	*/
564	+	public static <ExtraData> Test parameterizedTestSuite
565	+	(Class<? extends JSR166TestCase> testClass,
566	+	Class<ExtraData> dataClass,
567	+	ExtraData data) {
568	+	try {
569	+	TestSuite suite = new TestSuite();
570	+	Constructor c =
571	+	testClass.getDeclaredConstructor(dataClass, String.class);
572	+	for (String methodName : testMethodNames(testClass))
573	+	suite.addTest((Test) c.newInstance(data, methodName));
574	+	return suite;
575	+	} catch (Exception e) {
576	+	throw new Error(e);
577	+	}
578	+	}
579	+
580	+	/**
581	+	* Returns junit-style testSuite for the jdk8 extension of the
582	+	* given test class, but parameterized by passing extra data to
583	+	* each test.  Uses reflection to allow compilation in jdk7.
584	+	*/
585	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
586	+	(Class<? extends JSR166TestCase> testClass,
587	+	Class<ExtraData> dataClass,
588	+	ExtraData data) {
589	+	if (atLeastJava8()) {
590	+	String name = testClass.getName();
591	+	String name8 = name.replaceAll("Test$", "8Test");
592	+	if (name.equals(name8)) throw new Error(name);
593	+	try {
594	+	return (Test)
595	+	Class.forName(name8)
596	+	.getMethod("testSuite", new Class[] { dataClass })
597	+	.invoke(null, data);
598	+	} catch (Exception e) {
599	+	throw new Error(e);
600	+	}
601	+	} else {
602	+	return new TestSuite();
603	+	}
604	+	}
605	+
606	+	// Delays for timing-dependent tests, in milliseconds.
607
608		public static long SHORT_DELAY_MS;
609		public static long SMALL_DELAY_MS;
610		public static long MEDIUM_DELAY_MS;
611		public static long LONG_DELAY_MS;
612
159	–
613		/**
614	<	* Return the shortest timed delay. This could
615	<	* be reimplemented to use for example a Property.
616	<	*/
614	>	* Returns the shortest timed delay. This can be scaled up for
615	>	* slow machines using the jsr166.delay.factor system property,
616	>	* or via jtreg's -timeoutFactor: flag.
617	>	* http://openjdk.java.net/jtreg/command-help.html
618	>	*/
619		protected long getShortDelay() {
620	<	return 25;
620	>	return (long) (50 * delayFactor);
621		}
622
168	–
623		/**
624	<	* Set delays as multiples of SHORT_DELAY.
624	>	* Sets delays as multiples of SHORT_DELAY.
625		*/
626	<	protected  void setDelays() {
626	>	protected void setDelays() {
627		SHORT_DELAY_MS = getShortDelay();
628	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
628	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
629		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
630	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
630	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
631		}
632
633		/**
634	<	* Flag set true if any threadAssert methods fail
634	>	* Returns a timeout in milliseconds to be used in tests that
635	>	* verify that operations block or time out.
636		*/
637	<	volatile boolean threadFailed;
637	>	long timeoutMillis() {
638	>	return SHORT_DELAY_MS / 4;
639	>	}
640
641		/**
642	<	* Initialize test to indicate that no thread assertions have failed
642	>	* Returns a new Date instance representing a time at least
643	>	* delayMillis milliseconds in the future.
644		*/
645	<	public void setUp() {
645	>	Date delayedDate(long delayMillis) {
646	>	// Add 1 because currentTimeMillis is known to round into the past.
647	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
648	>	}
649	>
650	>	/**
651	>	* The first exception encountered if any threadAssertXXX method fails.
652	>	*/
653	>	private final AtomicReference<Throwable> threadFailure
654	>	= new AtomicReference<Throwable>(null);
655	>
656	>	/**
657	>	* Records an exception so that it can be rethrown later in the test
658	>	* harness thread, triggering a test case failure.  Only the first
659	>	* failure is recorded; subsequent calls to this method from within
660	>	* the same test have no effect.
661	>	*/
662	>	public void threadRecordFailure(Throwable t) {
663	>	System.err.println(t);
664	>	dumpTestThreads();
665	>	threadFailure.compareAndSet(null, t);
666	>	}
667	>
668	>	public void setUp() {
669		setDelays();
670	<	threadFailed = false;
670	>	}
671	>
672	>	void tearDownFail(String format, Object... args) {
673	>	String msg = toString() + ": " + String.format(format, args);
674	>	System.err.println(msg);
675	>	dumpTestThreads();
676	>	throw new AssertionFailedError(msg);
677		}
678
679		/**
680	<	* Trigger test case failure if any thread assertions have failed
680	>	* Extra checks that get done for all test cases.
681	>	*
682	>	* Triggers test case failure if any thread assertions have failed,
683	>	* by rethrowing, in the test harness thread, any exception recorded
684	>	* earlier by threadRecordFailure.
685	>	*
686	>	* Triggers test case failure if interrupt status is set in the main thread.
687		*/
688	<	public void tearDown() {
689	<	assertFalse(threadFailed);
688	>	public void tearDown() throws Exception {
689	>	Throwable t = threadFailure.getAndSet(null);
690	>	if (t != null) {
691	>	if (t instanceof Error)
692	>	throw (Error) t;
693	>	else if (t instanceof RuntimeException)
694	>	throw (RuntimeException) t;
695	>	else if (t instanceof Exception)
696	>	throw (Exception) t;
697	>	else {
698	>	AssertionFailedError afe =
699	>	new AssertionFailedError(t.toString());
700	>	afe.initCause(t);
701	>	throw afe;
702	>	}
703	>	}
704	>
705	>	if (Thread.interrupted())
706	>	tearDownFail("interrupt status set in main thread");
707	>
708	>	checkForkJoinPoolThreadLeaks();
709		}
710
711		/**
712	<	* Fail, also setting status to indicate current testcase should fail
713	<	*/
712	>	* Finds missing PoolCleaners
713	>	*/
714	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
715	>	Thread[] survivors = new Thread[7];
716	>	int count = Thread.enumerate(survivors);
717	>	for (int i = 0; i < count; i++) {
718	>	Thread thread = survivors[i];
719	>	String name = thread.getName();
720	>	if (name.startsWith("ForkJoinPool-")) {
721	>	// give thread some time to terminate
722	>	thread.join(LONG_DELAY_MS);
723	>	if (thread.isAlive())
724	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
725	>	thread);
726	>	}
727	>	}
728	>
729	>	if (!ForkJoinPool.commonPool()
730	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
731	>	tearDownFail("ForkJoin common pool thread stuck");
732	>	}
733	>
734	>	/**
735	>	* Just like fail(reason), but additionally recording (using
736	>	* threadRecordFailure) any AssertionFailedError thrown, so that
737	>	* the current testcase will fail.
738	>	*/
739		public void threadFail(String reason) {
740	<	threadFailed = true;
741	<	fail(reason);
740	>	try {
741	>	fail(reason);
742	>	} catch (AssertionFailedError t) {
743	>	threadRecordFailure(t);
744	>	throw t;
745	>	}
746		}
747
748		/**
749	<	* If expression not true, set status to indicate current testcase
750	<	* should fail
751	<	*/
749	>	* Just like assertTrue(b), but additionally recording (using
750	>	* threadRecordFailure) any AssertionFailedError thrown, so that
751	>	* the current testcase will fail.
752	>	*/
753		public void threadAssertTrue(boolean b) {
754	<	if (!b) {
213	<	threadFailed = true;
754	>	try {
755		assertTrue(b);
756	+	} catch (AssertionFailedError t) {
757	+	threadRecordFailure(t);
758	+	throw t;
759		}
760		}
761
762		/**
763	<	* If expression not false, set status to indicate current testcase
764	<	* should fail
765	<	*/
763	>	* Just like assertFalse(b), but additionally recording (using
764	>	* threadRecordFailure) any AssertionFailedError thrown, so that
765	>	* the current testcase will fail.
766	>	*/
767		public void threadAssertFalse(boolean b) {
768	<	if (b) {
224	<	threadFailed = true;
768	>	try {
769		assertFalse(b);
770	+	} catch (AssertionFailedError t) {
771	+	threadRecordFailure(t);
772	+	throw t;
773		}
774		}
775
776		/**
777	<	* If argument not null, set status to indicate current testcase
778	<	* should fail
779	<	*/
777	>	* Just like assertNull(x), but additionally recording (using
778	>	* threadRecordFailure) any AssertionFailedError thrown, so that
779	>	* the current testcase will fail.
780	>	*/
781		public void threadAssertNull(Object x) {
782	<	if (x != null) {
235	<	threadFailed = true;
782	>	try {
783		assertNull(x);
784	+	} catch (AssertionFailedError t) {
785	+	threadRecordFailure(t);
786	+	throw t;
787		}
788		}
789
790		/**
791	<	* If arguments not equal, set status to indicate current testcase
792	<	* should fail
793	<	*/
791	>	* Just like assertEquals(x, y), but additionally recording (using
792	>	* threadRecordFailure) any AssertionFailedError thrown, so that
793	>	* the current testcase will fail.
794	>	*/
795		public void threadAssertEquals(long x, long y) {
796	<	if (x != y) {
246	<	threadFailed = true;
796	>	try {
797		assertEquals(x, y);
798	+	} catch (AssertionFailedError t) {
799	+	threadRecordFailure(t);
800	+	throw t;
801		}
802		}
803
804		/**
805	<	* If arguments not equal, set status to indicate current testcase
806	<	* should fail
807	<	*/
805	>	* Just like assertEquals(x, y), but additionally recording (using
806	>	* threadRecordFailure) any AssertionFailedError thrown, so that
807	>	* the current testcase will fail.
808	>	*/
809		public void threadAssertEquals(Object x, Object y) {
810	<	if (x != y && (x == null || !x.equals(y))) {
257	<	threadFailed = true;
810	>	try {
811		assertEquals(x, y);
812	+	} catch (AssertionFailedError fail) {
813	+	threadRecordFailure(fail);
814	+	throw fail;
815	+	} catch (Throwable fail) {
816	+	threadUnexpectedException(fail);
817		}
818		}
819
820		/**
821	<	* threadFail with message "should throw exception"
822	<	*/
821	>	* Just like assertSame(x, y), but additionally recording (using
822	>	* threadRecordFailure) any AssertionFailedError thrown, so that
823	>	* the current testcase will fail.
824	>	*/
825	>	public void threadAssertSame(Object x, Object y) {
826	>	try {
827	>	assertSame(x, y);
828	>	} catch (AssertionFailedError fail) {
829	>	threadRecordFailure(fail);
830	>	throw fail;
831	>	}
832	>	}
833	>
834	>	/**
835	>	* Calls threadFail with message "should throw exception".
836	>	*/
837		public void threadShouldThrow() {
838	<	threadFailed = true;
839	<	fail("should throw exception");
838	>	threadFail("should throw exception");
839	>	}
840	>
841	>	/**
842	>	* Calls threadFail with message "should throw" + exceptionName.
843	>	*/
844	>	public void threadShouldThrow(String exceptionName) {
845	>	threadFail("should throw " + exceptionName);
846		}
847
848		/**
849	<	* threadFail with message "Unexpected exception"
849	>	* Records the given exception using {@link #threadRecordFailure},
850	>	* then rethrows the exception, wrapping it in an
851	>	* AssertionFailedError if necessary.
852		*/
853	<	public void threadUnexpectedException() {
854	<	threadFailed = true;
855	<	fail("Unexpected exception");
853	>	public void threadUnexpectedException(Throwable t) {
854	>	threadRecordFailure(t);
855	>	t.printStackTrace();
856	>	if (t instanceof RuntimeException)
857	>	throw (RuntimeException) t;
858	>	else if (t instanceof Error)
859	>	throw (Error) t;
860	>	else {
861	>	AssertionFailedError afe =
862	>	new AssertionFailedError("unexpected exception: " + t);
863	>	afe.initCause(t);
864	>	throw afe;
865	>	}
866		}
867
868	+	/**
869	+	* Delays, via Thread.sleep, for the given millisecond delay, but
870	+	* if the sleep is shorter than specified, may re-sleep or yield
871	+	* until time elapses.  Ensures that the given time, as measured
872	+	* by System.nanoTime(), has elapsed.
873	+	*/
874	+	static void delay(long millis) throws InterruptedException {
875	+	long nanos = millis * (1000 * 1000);
876	+	final long wakeupTime = System.nanoTime() + nanos;
877	+	do {
878	+	if (millis > 0L)
879	+	Thread.sleep(millis);
880	+	else // too short to sleep
881	+	Thread.yield();
882	+	nanos = wakeupTime - System.nanoTime();
883	+	millis = nanos / (1000 * 1000);
884	+	} while (nanos >= 0L);
885	+	}
886	+
887	+	/**
888	+	* Allows use of try-with-resources with per-test thread pools.
889	+	*/
890	+	class PoolCleaner implements AutoCloseable {
891	+	private final ExecutorService pool;
892	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
893	+	public void close() { joinPool(pool); }
894	+	}
895
896		/**
897	<	* Wait out termination of a thread pool or fail doing so
897	>	* An extension of PoolCleaner that has an action to release the pool.
898		*/
899	<	public void joinPool(ExecutorService exec) {
899	>	class PoolCleanerWithReleaser extends PoolCleaner {
900	>	private final Runnable releaser;
901	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
902	>	super(pool);
903	>	this.releaser = releaser;
904	>	}
905	>	public void close() {
906	>	try {
907	>	releaser.run();
908	>	} finally {
909	>	super.close();
910	>	}
911	>	}
912	>	}
913	>
914	>	PoolCleaner cleaner(ExecutorService pool) {
915	>	return new PoolCleaner(pool);
916	>	}
917	>
918	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
919	>	return new PoolCleanerWithReleaser(pool, releaser);
920	>	}
921	>
922	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
923	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
924	>	}
925	>
926	>	Runnable releaser(final CountDownLatch latch) {
927	>	return new Runnable() { public void run() {
928	>	do { latch.countDown(); }
929	>	while (latch.getCount() > 0);
930	>	}};
931	>	}
932	>
933	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
934	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
935	>	}
936	>
937	>	Runnable releaser(final AtomicBoolean flag) {
938	>	return new Runnable() { public void run() { flag.set(true); }};
939	>	}
940	>
941	>	/**
942	>	* Waits out termination of a thread pool or fails doing so.
943	>	*/
944	>	void joinPool(ExecutorService pool) {
945		try {
946	<	exec.shutdown();
947	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
948	<	} catch(InterruptedException ie) {
949	<	fail("Unexpected exception");
946	>	pool.shutdown();
947	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
948	>	try {
949	>	threadFail("ExecutorService " + pool +
950	>	" did not terminate in a timely manner");
951	>	} finally {
952	>	// last resort, for the benefit of subsequent tests
953	>	pool.shutdownNow();
954	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
955	>	}
956	>	}
957	>	} catch (SecurityException ok) {
958	>	// Allowed in case test doesn't have privs
959	>	} catch (InterruptedException fail) {
960	>	threadFail("Unexpected InterruptedException");
961		}
962		}
963
964	+	/**
965	+	* Like Runnable, but with the freedom to throw anything.
966	+	* junit folks had the same idea:
967	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
968	+	*/
969	+	interface Action { public void run() throws Throwable; }
970	+
971	+	/**
972	+	* Runs all the given actions in parallel, failing if any fail.
973	+	* Useful for running multiple variants of tests that are
974	+	* necessarily individually slow because they must block.
975	+	*/
976	+	void testInParallel(Action ... actions) {
977	+	ExecutorService pool = Executors.newCachedThreadPool();
978	+	try (PoolCleaner cleaner = cleaner(pool)) {
979	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
980	+	for (final Action action : actions)
981	+	futures.add(pool.submit(new CheckedRunnable() {
982	+	public void realRun() throws Throwable { action.run();}}));
983	+	for (Future<?> future : futures)
984	+	try {
985	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
986	+	} catch (ExecutionException ex) {
987	+	threadUnexpectedException(ex.getCause());
988	+	} catch (Exception ex) {
989	+	threadUnexpectedException(ex);
990	+	}
991	+	}
992	+	}
993
994		/**
995	<	* fail with message "should throw exception"
996	<	*/
995	>	* A debugging tool to print stack traces of most threads, as jstack does.
996	>	* Uninteresting threads are filtered out.
997	>	*/
998	>	static void dumpTestThreads() {
999	>	SecurityManager sm = System.getSecurityManager();
1000	>	if (sm != null) {
1001	>	try {
1002	>	System.setSecurityManager(null);
1003	>	} catch (SecurityException giveUp) {
1004	>	return;
1005	>	}
1006	>	}
1007	>
1008	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1009	>	System.err.println("------ stacktrace dump start ------");
1010	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1011	>	final String name = info.getThreadName();
1012	>	String lockName;
1013	>	if ("Signal Dispatcher".equals(name))
1014	>	continue;
1015	>	if ("Reference Handler".equals(name)
1016	>	&& (lockName = info.getLockName()) != null
1017	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1018	>	continue;
1019	>	if ("Finalizer".equals(name)
1020	>	&& (lockName = info.getLockName()) != null
1021	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1022	>	continue;
1023	>	if ("checkForWedgedTest".equals(name))
1024	>	continue;
1025	>	System.err.print(info);
1026	>	}
1027	>	System.err.println("------ stacktrace dump end ------");
1028	>
1029	>	if (sm != null) System.setSecurityManager(sm);
1030	>	}
1031	>
1032	>	/**
1033	>	* Checks that thread does not terminate within the default
1034	>	* millisecond delay of {@code timeoutMillis()}.
1035	>	*/
1036	>	void assertThreadStaysAlive(Thread thread) {
1037	>	assertThreadStaysAlive(thread, timeoutMillis());
1038	>	}
1039	>
1040	>	/**
1041	>	* Checks that thread does not terminate within the given millisecond delay.
1042	>	*/
1043	>	void assertThreadStaysAlive(Thread thread, long millis) {
1044	>	try {
1045	>	// No need to optimize the failing case via Thread.join.
1046	>	delay(millis);
1047	>	assertTrue(thread.isAlive());
1048	>	} catch (InterruptedException fail) {
1049	>	threadFail("Unexpected InterruptedException");
1050	>	}
1051	>	}
1052	>
1053	>	/**
1054	>	* Checks that the threads do not terminate within the default
1055	>	* millisecond delay of {@code timeoutMillis()}.
1056	>	*/
1057	>	void assertThreadsStayAlive(Thread... threads) {
1058	>	assertThreadsStayAlive(timeoutMillis(), threads);
1059	>	}
1060	>
1061	>	/**
1062	>	* Checks that the threads do not terminate within the given millisecond delay.
1063	>	*/
1064	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1065	>	try {
1066	>	// No need to optimize the failing case via Thread.join.
1067	>	delay(millis);
1068	>	for (Thread thread : threads)
1069	>	assertTrue(thread.isAlive());
1070	>	} catch (InterruptedException fail) {
1071	>	threadFail("Unexpected InterruptedException");
1072	>	}
1073	>	}
1074	>
1075	>	/**
1076	>	* Checks that future.get times out, with the default timeout of
1077	>	* {@code timeoutMillis()}.
1078	>	*/
1079	>	void assertFutureTimesOut(Future future) {
1080	>	assertFutureTimesOut(future, timeoutMillis());
1081	>	}
1082	>
1083	>	/**
1084	>	* Checks that future.get times out, with the given millisecond timeout.
1085	>	*/
1086	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1087	>	long startTime = System.nanoTime();
1088	>	try {
1089	>	future.get(timeoutMillis, MILLISECONDS);
1090	>	shouldThrow();
1091	>	} catch (TimeoutException success) {
1092	>	} catch (Exception fail) {
1093	>	threadUnexpectedException(fail);
1094	>	} finally { future.cancel(true); }
1095	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1096	>	}
1097	>
1098	>	/**
1099	>	* Fails with message "should throw exception".
1100	>	*/
1101		public void shouldThrow() {
1102		fail("Should throw exception");
1103		}
1104
1105		/**
1106	<	* fail with message "Unexpected exception"
1106	>	* Fails with message "should throw " + exceptionName.
1107		*/
1108	<	public void unexpectedException() {
1109	<	fail("Unexpected exception");
1108	>	public void shouldThrow(String exceptionName) {
1109	>	fail("Should throw " + exceptionName);
1110		}
1111
306	–
1112		/**
1113		* The number of elements to place in collections, arrays, etc.
1114		*/
1115	<	static final int SIZE = 20;
1115	>	public static final int SIZE = 20;
1116
1117		// Some convenient Integer constants
1118
1119	<	static final Integer zero = new Integer(0);
1120	<	static final Integer one = new Integer(1);
1121	<	static final Integer two = new Integer(2);
1122	<	static final Integer three  = new Integer(3);
1123	<	static final Integer four  = new Integer(4);
1124	<	static final Integer five  = new Integer(5);
1125	<	static final Integer six = new Integer(6);
1126	<	static final Integer seven = new Integer(7);
1127	<	static final Integer eight = new Integer(8);
1128	<	static final Integer nine = new Integer(9);
1129	<	static final Integer m1  = new Integer(-1);
1130	<	static final Integer m2  = new Integer(-2);
1131	<	static final Integer m3  = new Integer(-3);
1132	<	static final Integer m4 = new Integer(-4);
1133	<	static final Integer m5 = new Integer(-5);
1134	<	static final Integer m10 = new Integer(-10);
1119	>	public static final Integer zero  = new Integer(0);
1120	>	public static final Integer one   = new Integer(1);
1121	>	public static final Integer two   = new Integer(2);
1122	>	public static final Integer three = new Integer(3);
1123	>	public static final Integer four  = new Integer(4);
1124	>	public static final Integer five  = new Integer(5);
1125	>	public static final Integer six   = new Integer(6);
1126	>	public static final Integer seven = new Integer(7);
1127	>	public static final Integer eight = new Integer(8);
1128	>	public static final Integer nine  = new Integer(9);
1129	>	public static final Integer m1  = new Integer(-1);
1130	>	public static final Integer m2  = new Integer(-2);
1131	>	public static final Integer m3  = new Integer(-3);
1132	>	public static final Integer m4  = new Integer(-4);
1133	>	public static final Integer m5  = new Integer(-5);
1134	>	public static final Integer m6  = new Integer(-6);
1135	>	public static final Integer m10 = new Integer(-10);
1136	>
1137	>	/**
1138	>	* Runs Runnable r with a security policy that permits precisely
1139	>	* the specified permissions.  If there is no current security
1140	>	* manager, the runnable is run twice, both with and without a
1141	>	* security manager.  We require that any security manager permit
1142	>	* getPolicy/setPolicy.
1143	>	*/
1144	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1145	>	SecurityManager sm = System.getSecurityManager();
1146	>	if (sm == null) {
1147	>	r.run();
1148	>	}
1149	>	runWithSecurityManagerWithPermissions(r, permissions);
1150	>	}
1151	>
1152	>	/**
1153	>	* Runs Runnable r with a security policy that permits precisely
1154	>	* the specified permissions.  If there is no current security
1155	>	* manager, a temporary one is set for the duration of the
1156	>	* Runnable.  We require that any security manager permit
1157	>	* getPolicy/setPolicy.
1158	>	*/
1159	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1160	>	Permission... permissions) {
1161	>	SecurityManager sm = System.getSecurityManager();
1162	>	if (sm == null) {
1163	>	Policy savedPolicy = Policy.getPolicy();
1164	>	try {
1165	>	Policy.setPolicy(permissivePolicy());
1166	>	System.setSecurityManager(new SecurityManager());
1167	>	runWithSecurityManagerWithPermissions(r, permissions);
1168	>	} finally {
1169	>	System.setSecurityManager(null);
1170	>	Policy.setPolicy(savedPolicy);
1171	>	}
1172	>	} else {
1173	>	Policy savedPolicy = Policy.getPolicy();
1174	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1175	>	Policy.setPolicy(policy);
1176	>
1177	>	try {
1178	>	r.run();
1179	>	} finally {
1180	>	policy.addPermission(new SecurityPermission("setPolicy"));
1181	>	Policy.setPolicy(savedPolicy);
1182	>	}
1183	>	}
1184	>	}
1185
1186	+	/**
1187	+	* Runs a runnable without any permissions.
1188	+	*/
1189	+	public void runWithoutPermissions(Runnable r) {
1190	+	runWithPermissions(r);
1191	+	}
1192
1193		/**
1194		* A security policy where new permissions can be dynamically added
1195		* or all cleared.
1196		*/
1197	<	static class AdjustablePolicy extends java.security.Policy {
1197	>	public static class AdjustablePolicy extends java.security.Policy {
1198		Permissions perms = new Permissions();
1199	<	AdjustablePolicy() { }
1199	>	AdjustablePolicy(Permission... permissions) {
1200	>	for (Permission permission : permissions)
1201	>	perms.add(permission);
1202	>	}
1203		void addPermission(Permission perm) { perms.add(perm); }
1204		void clearPermissions() { perms = new Permissions(); }
1205	<	public PermissionCollection getPermissions(CodeSource cs) {
1206	<	return perms;
1207	<	}
1208	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1209	<	return perms;
1210	<	}
1211	<	public boolean implies(ProtectionDomain pd, Permission p) {
1212	<	return perms.implies(p);
1213	<	}
1214	<	public void refresh() {}
1205	>	public PermissionCollection getPermissions(CodeSource cs) {
1206	>	return perms;
1207	>	}
1208	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1209	>	return perms;
1210	>	}
1211	>	public boolean implies(ProtectionDomain pd, Permission p) {
1212	>	return perms.implies(p);
1213	>	}
1214	>	public void refresh() {}
1215	>	public String toString() {
1216	>	List<Permission> ps = new ArrayList<Permission>();
1217	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1218	>	ps.add(e.nextElement());
1219	>	return "AdjustablePolicy with permissions " + ps;
1220	>	}
1221		}
1222
1223	+	/**
1224	+	* Returns a policy containing all the permissions we ever need.
1225	+	*/
1226	+	public static Policy permissivePolicy() {
1227	+	return new AdjustablePolicy
1228	+	// Permissions j.u.c. needs directly
1229	+	(new RuntimePermission("modifyThread"),
1230	+	new RuntimePermission("getClassLoader"),
1231	+	new RuntimePermission("setContextClassLoader"),
1232	+	// Permissions needed to change permissions!
1233	+	new SecurityPermission("getPolicy"),
1234	+	new SecurityPermission("setPolicy"),
1235	+	new RuntimePermission("setSecurityManager"),
1236	+	// Permissions needed by the junit test harness
1237	+	new RuntimePermission("accessDeclaredMembers"),
1238	+	new PropertyPermission("*", "read"),
1239	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1240	+	}
1241
1242	<	// Some convenient Runnable classes
1242	>	/**
1243	>	* Sleeps until the given time has elapsed.
1244	>	* Throws AssertionFailedError if interrupted.
1245	>	*/
1246	>	static void sleep(long millis) {
1247	>	try {
1248	>	delay(millis);
1249	>	} catch (InterruptedException fail) {
1250	>	AssertionFailedError afe =
1251	>	new AssertionFailedError("Unexpected InterruptedException");
1252	>	afe.initCause(fail);
1253	>	throw afe;
1254	>	}
1255	>	}
1256
1257	<	static class NoOpRunnable implements Runnable {
1258	<	public void run() {}
1257	>	/**
1258	>	* Spin-waits up to the specified number of milliseconds for the given
1259	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1260	>	*/
1261	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1262	>	long startTime = 0L;
1263	>	for (;;) {
1264	>	Thread.State s = thread.getState();
1265	>	if (s == Thread.State.BLOCKED ||
1266	>	s == Thread.State.WAITING ||
1267	>	s == Thread.State.TIMED_WAITING)
1268	>	return;
1269	>	else if (s == Thread.State.TERMINATED)
1270	>	fail("Unexpected thread termination");
1271	>	else if (startTime == 0L)
1272	>	startTime = System.nanoTime();
1273	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1274	>	threadAssertTrue(thread.isAlive());
1275	>	return;
1276	>	}
1277	>	Thread.yield();
1278	>	}
1279		}
1280
1281	<	static class NoOpCallable implements Callable {
1282	<	public Object call() { return Boolean.TRUE; }
1281	>	/**
1282	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1283	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1284	>	*/
1285	>	void waitForThreadToEnterWaitState(Thread thread) {
1286	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1287	>	}
1288	>
1289	>	/**
1290	>	* Returns the number of milliseconds since time given by
1291	>	* startNanoTime, which must have been previously returned from a
1292	>	* call to {@link System#nanoTime()}.
1293	>	*/
1294	>	static long millisElapsedSince(long startNanoTime) {
1295	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1296		}
1297
1298	<	static final String TEST_STRING = "a test string";
1298	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1299	>	//         long startTime = System.nanoTime();
1300	>	//         try {
1301	>	//             r.run();
1302	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1303	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1304	>	//             throw new AssertionFailedError("did not return promptly");
1305	>	//     }
1306	>
1307	>	//     void assertTerminatesPromptly(Runnable r) {
1308	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1309	>	//     }
1310
1311	<	static class StringTask implements Callable<String> {
1312	<	public String call() { return TEST_STRING; }
1311	>	/**
1312	>	* Checks that timed f.get() returns the expected value, and does not
1313	>	* wait for the timeout to elapse before returning.
1314	>	*/
1315	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1316	>	long startTime = System.nanoTime();
1317	>	try {
1318	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1319	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1320	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1321	>	throw new AssertionFailedError("timed get did not return promptly");
1322		}
1323
1324	<	static class NPETask implements Callable<String> {
1325	<	public String call() { throw new NullPointerException(); }
1324	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1325	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1326		}
1327
1328	<	static class CallableOne implements Callable<Integer> {
1329	<	public Integer call() { return one; }
1328	>	/**
1329	>	* Returns a new started daemon Thread running the given runnable.
1330	>	*/
1331	>	Thread newStartedThread(Runnable runnable) {
1332	>	Thread t = new Thread(runnable);
1333	>	t.setDaemon(true);
1334	>	t.start();
1335	>	return t;
1336		}
1337
1338	<	class ShortRunnable implements Runnable {
1339	<	public void run() {
1340	<	try {
1341	<	Thread.sleep(SHORT_DELAY_MS);
1342	<	}
1343	<	catch(Exception e) {
1344	<	threadUnexpectedException();
1338	>	/**
1339	>	* Waits for the specified time (in milliseconds) for the thread
1340	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1341	>	* the thread (in the hope that it may terminate later) and fails.
1342	>	*/
1343	>	void awaitTermination(Thread t, long timeoutMillis) {
1344	>	try {
1345	>	t.join(timeoutMillis);
1346	>	} catch (InterruptedException fail) {
1347	>	threadUnexpectedException(fail);
1348	>	} finally {
1349	>	if (t.getState() != Thread.State.TERMINATED) {
1350	>	t.interrupt();
1351	>	threadFail("timed out waiting for thread to terminate");
1352		}
1353		}
1354		}
1355
1356	<	class ShortInterruptedRunnable implements Runnable {
1357	<	public void run() {
1356	>	/**
1357	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1358	>	* terminate (using {@link Thread#join(long)}), else interrupts
1359	>	* the thread (in the hope that it may terminate later) and fails.
1360	>	*/
1361	>	void awaitTermination(Thread t) {
1362	>	awaitTermination(t, LONG_DELAY_MS);
1363	>	}
1364	>
1365	>	// Some convenient Runnable classes
1366	>
1367	>	public abstract class CheckedRunnable implements Runnable {
1368	>	protected abstract void realRun() throws Throwable;
1369	>
1370	>	public final void run() {
1371		try {
1372	<	Thread.sleep(SHORT_DELAY_MS);
1373	<	threadShouldThrow();
1374	<	}
395	<	catch(InterruptedException success) {
1372	>	realRun();
1373	>	} catch (Throwable fail) {
1374	>	threadUnexpectedException(fail);
1375		}
1376		}
1377		}
1378
1379	<	class SmallRunnable implements Runnable {
1380	<	public void run() {
1379	>	public abstract class RunnableShouldThrow implements Runnable {
1380	>	protected abstract void realRun() throws Throwable;
1381	>
1382	>	final Class<?> exceptionClass;
1383	>
1384	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1385	>	this.exceptionClass = exceptionClass;
1386	>	}
1387	>
1388	>	public final void run() {
1389		try {
1390	<	Thread.sleep(SMALL_DELAY_MS);
1391	<	}
1392	<	catch(Exception e) {
1393	<	threadUnexpectedException();
1390	>	realRun();
1391	>	threadShouldThrow(exceptionClass.getSimpleName());
1392	>	} catch (Throwable t) {
1393	>	if (! exceptionClass.isInstance(t))
1394	>	threadUnexpectedException(t);
1395		}
1396		}
1397		}
1398
1399	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1400	<	public void run() {
1399	>	public abstract class ThreadShouldThrow extends Thread {
1400	>	protected abstract void realRun() throws Throwable;
1401	>
1402	>	final Class<?> exceptionClass;
1403	>
1404	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1405	>	this.exceptionClass = exceptionClass;
1406	>	}
1407	>
1408	>	public final void run() {
1409		try {
1410	<	Thread.sleep(SMALL_DELAY_MS);
1411	<	}
1412	<	catch(Exception e) {
1410	>	realRun();
1411	>	threadShouldThrow(exceptionClass.getSimpleName());
1412	>	} catch (Throwable t) {
1413	>	if (! exceptionClass.isInstance(t))
1414	>	threadUnexpectedException(t);
1415		}
1416		}
1417		}
1418
1419	<	class SmallCallable implements Callable {
1420	<	public Object call() {
1419	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1420	>	protected abstract void realRun() throws Throwable;
1421	>
1422	>	public final void run() {
1423		try {
1424	<	Thread.sleep(SMALL_DELAY_MS);
1425	<	}
1426	<	catch(Exception e) {
1427	<	threadUnexpectedException();
1424	>	realRun();
1425	>	threadShouldThrow("InterruptedException");
1426	>	} catch (InterruptedException success) {
1427	>	threadAssertFalse(Thread.interrupted());
1428	>	} catch (Throwable fail) {
1429	>	threadUnexpectedException(fail);
1430		}
429	–	return Boolean.TRUE;
1431		}
1432		}
1433
1434	<	class SmallInterruptedRunnable implements Runnable {
1435	<	public void run() {
1434	>	public abstract class CheckedCallable<T> implements Callable<T> {
1435	>	protected abstract T realCall() throws Throwable;
1436	>
1437	>	public final T call() {
1438		try {
1439	<	Thread.sleep(SMALL_DELAY_MS);
1440	<	threadShouldThrow();
1441	<	}
1442	<	catch(InterruptedException success) {
1439	>	return realCall();
1440	>	} catch (Throwable fail) {
1441	>	threadUnexpectedException(fail);
1442	>	return null;
1443		}
1444		}
1445		}
1446
1447	+	public abstract class CheckedInterruptedCallable<T>
1448	+	implements Callable<T> {
1449	+	protected abstract T realCall() throws Throwable;
1450
1451	<	class MediumRunnable implements Runnable {
446	<	public void run() {
1451	>	public final T call() {
1452		try {
1453	<	Thread.sleep(MEDIUM_DELAY_MS);
1454	<	}
1455	<	catch(Exception e) {
1456	<	threadUnexpectedException();
1453	>	T result = realCall();
1454	>	threadShouldThrow("InterruptedException");
1455	>	return result;
1456	>	} catch (InterruptedException success) {
1457	>	threadAssertFalse(Thread.interrupted());
1458	>	} catch (Throwable fail) {
1459	>	threadUnexpectedException(fail);
1460		}
1461	+	return null;
1462		}
1463		}
1464
1465	<	class MediumInterruptedRunnable implements Runnable {
1466	<	public void run() {
1465	>	public static class NoOpRunnable implements Runnable {
1466	>	public void run() {}
1467	>	}
1468	>
1469	>	public static class NoOpCallable implements Callable {
1470	>	public Object call() { return Boolean.TRUE; }
1471	>	}
1472	>
1473	>	public static final String TEST_STRING = "a test string";
1474	>
1475	>	public static class StringTask implements Callable<String> {
1476	>	final String value;
1477	>	public StringTask() { this(TEST_STRING); }
1478	>	public StringTask(String value) { this.value = value; }
1479	>	public String call() { return value; }
1480	>	}
1481	>
1482	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1483	>	return new CheckedCallable<String>() {
1484	>	protected String realCall() {
1485	>	try {
1486	>	latch.await();
1487	>	} catch (InterruptedException quittingTime) {}
1488	>	return TEST_STRING;
1489	>	}};
1490	>	}
1491	>
1492	>	public Runnable countDowner(final CountDownLatch latch) {
1493	>	return new CheckedRunnable() {
1494	>	public void realRun() throws InterruptedException {
1495	>	latch.countDown();
1496	>	}};
1497	>	}
1498	>
1499	>	class LatchAwaiter extends CheckedRunnable {
1500	>	static final int NEW = 0;
1501	>	static final int RUNNING = 1;
1502	>	static final int DONE = 2;
1503	>	final CountDownLatch latch;
1504	>	int state = NEW;
1505	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1506	>	public void realRun() throws InterruptedException {
1507	>	state = 1;
1508	>	await(latch);
1509	>	state = 2;
1510	>	}
1511	>	}
1512	>
1513	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1514	>	return new LatchAwaiter(latch);
1515	>	}
1516	>
1517	>	public void await(CountDownLatch latch, long timeoutMillis) {
1518	>	try {
1519	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1520	>	fail("timed out waiting for CountDownLatch for "
1521	>	+ (timeoutMillis/1000) + " sec");
1522	>	} catch (Throwable fail) {
1523	>	threadUnexpectedException(fail);
1524	>	}
1525	>	}
1526	>
1527	>	public void await(CountDownLatch latch) {
1528	>	await(latch, LONG_DELAY_MS);
1529	>	}
1530	>
1531	>	public void await(Semaphore semaphore) {
1532	>	try {
1533	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1534	>	fail("timed out waiting for Semaphore for "
1535	>	+ (LONG_DELAY_MS/1000) + " sec");
1536	>	} catch (Throwable fail) {
1537	>	threadUnexpectedException(fail);
1538	>	}
1539	>	}
1540	>
1541	>	//     /**
1542	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1543	>	//      */
1544	>	//     public void await(AtomicBoolean flag) {
1545	>	//         await(flag, LONG_DELAY_MS);
1546	>	//     }
1547	>
1548	>	//     /**
1549	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1550	>	//      */
1551	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1552	>	//         long startTime = System.nanoTime();
1553	>	//         while (!flag.get()) {
1554	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1555	>	//                 throw new AssertionFailedError("timed out");
1556	>	//             Thread.yield();
1557	>	//         }
1558	>	//     }
1559	>
1560	>	public static class NPETask implements Callable<String> {
1561	>	public String call() { throw new NullPointerException(); }
1562	>	}
1563	>
1564	>	public static class CallableOne implements Callable<Integer> {
1565	>	public Integer call() { return one; }
1566	>	}
1567	>
1568	>	public class ShortRunnable extends CheckedRunnable {
1569	>	protected void realRun() throws Throwable {
1570	>	delay(SHORT_DELAY_MS);
1571	>	}
1572	>	}
1573	>
1574	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1575	>	protected void realRun() throws InterruptedException {
1576	>	delay(SHORT_DELAY_MS);
1577	>	}
1578	>	}
1579	>
1580	>	public class SmallRunnable extends CheckedRunnable {
1581	>	protected void realRun() throws Throwable {
1582	>	delay(SMALL_DELAY_MS);
1583	>	}
1584	>	}
1585	>
1586	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1587	>	protected void realRun() {
1588		try {
1589	<	Thread.sleep(MEDIUM_DELAY_MS);
1590	<	threadShouldThrow();
461	<	}
462	<	catch(InterruptedException success) {
463	<	}
1589	>	delay(SMALL_DELAY_MS);
1590	>	} catch (InterruptedException ok) {}
1591		}
1592		}
1593
1594	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1595	<	public void run() {
1594	>	public class SmallCallable extends CheckedCallable {
1595	>	protected Object realCall() throws InterruptedException {
1596	>	delay(SMALL_DELAY_MS);
1597	>	return Boolean.TRUE;
1598	>	}
1599	>	}
1600	>
1601	>	public class MediumRunnable extends CheckedRunnable {
1602	>	protected void realRun() throws Throwable {
1603	>	delay(MEDIUM_DELAY_MS);
1604	>	}
1605	>	}
1606	>
1607	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1608	>	protected void realRun() throws InterruptedException {
1609	>	delay(MEDIUM_DELAY_MS);
1610	>	}
1611	>	}
1612	>
1613	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1614	>	return new CheckedRunnable() {
1615	>	protected void realRun() {
1616	>	try {
1617	>	delay(timeoutMillis);
1618	>	} catch (InterruptedException ok) {}
1619	>	}};
1620	>	}
1621	>
1622	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1623	>	protected void realRun() {
1624		try {
1625	<	Thread.sleep(MEDIUM_DELAY_MS);
1626	<	}
472	<	catch(InterruptedException success) {
473	<	}
1625	>	delay(MEDIUM_DELAY_MS);
1626	>	} catch (InterruptedException ok) {}
1627		}
1628		}
1629
1630	<	class LongPossiblyInterruptedRunnable implements Runnable {
1631	<	public void run() {
1630	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1631	>	protected void realRun() {
1632		try {
1633	<	Thread.sleep(LONG_DELAY_MS);
1634	<	}
482	<	catch(InterruptedException success) {
483	<	}
1633	>	delay(LONG_DELAY_MS);
1634	>	} catch (InterruptedException ok) {}
1635		}
1636		}
1637
1638		/**
1639		* For use as ThreadFactory in constructors
1640		*/
1641	<	static class SimpleThreadFactory implements ThreadFactory{
1642	<	public Thread newThread(Runnable r){
1641	>	public static class SimpleThreadFactory implements ThreadFactory {
1642	>	public Thread newThread(Runnable r) {
1643		return new Thread(r);
1644	<	}
1644	>	}
1645		}
1646
1647	<	static class TrackedShortRunnable implements Runnable {
1648	<	volatile boolean done = false;
1647	>	public interface TrackedRunnable extends Runnable {
1648	>	boolean isDone();
1649	>	}
1650	>
1651	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1652	>	return new TrackedRunnable() {
1653	>	private volatile boolean done = false;
1654	>	public boolean isDone() { return done; }
1655	>	public void run() {
1656	>	try {
1657	>	delay(timeoutMillis);
1658	>	done = true;
1659	>	} catch (InterruptedException ok) {}
1660	>	}
1661	>	};
1662	>	}
1663	>
1664	>	public static class TrackedShortRunnable implements Runnable {
1665	>	public volatile boolean done = false;
1666		public void run() {
1667		try {
1668	<	Thread.sleep(SMALL_DELAY_MS);
1668	>	delay(SHORT_DELAY_MS);
1669		done = true;
1670	<	} catch(Exception e){
503	<	}
1670	>	} catch (InterruptedException ok) {}
1671		}
1672		}
1673
1674	<	static class TrackedMediumRunnable implements Runnable {
1675	<	volatile boolean done = false;
1674	>	public static class TrackedSmallRunnable implements Runnable {
1675	>	public volatile boolean done = false;
1676		public void run() {
1677		try {
1678	<	Thread.sleep(MEDIUM_DELAY_MS);
1678	>	delay(SMALL_DELAY_MS);
1679		done = true;
1680	<	} catch(Exception e){
514	<	}
1680	>	} catch (InterruptedException ok) {}
1681		}
1682		}
1683
1684	<	static class TrackedLongRunnable implements Runnable {
1685	<	volatile boolean done = false;
1684	>	public static class TrackedMediumRunnable implements Runnable {
1685	>	public volatile boolean done = false;
1686		public void run() {
1687		try {
1688	<	Thread.sleep(LONG_DELAY_MS);
1688	>	delay(MEDIUM_DELAY_MS);
1689		done = true;
1690	<	} catch(Exception e){
525	<	}
1690	>	} catch (InterruptedException ok) {}
1691		}
1692		}
1693
1694	<	static class TrackedNoOpRunnable implements Runnable {
1695	<	volatile boolean done = false;
1694	>	public static class TrackedLongRunnable implements Runnable {
1695	>	public volatile boolean done = false;
1696	>	public void run() {
1697	>	try {
1698	>	delay(LONG_DELAY_MS);
1699	>	done = true;
1700	>	} catch (InterruptedException ok) {}
1701	>	}
1702	>	}
1703	>
1704	>	public static class TrackedNoOpRunnable implements Runnable {
1705	>	public volatile boolean done = false;
1706		public void run() {
1707		done = true;
1708		}
1709		}
1710
1711	<	static class TrackedCallable implements Callable {
1712	<	volatile boolean done = false;
1711	>	public static class TrackedCallable implements Callable {
1712	>	public volatile boolean done = false;
1713		public Object call() {
1714		try {
1715	<	Thread.sleep(SMALL_DELAY_MS);
1715	>	delay(SMALL_DELAY_MS);
1716		done = true;
1717	<	} catch(Exception e){
543	<	}
1717	>	} catch (InterruptedException ok) {}
1718		return Boolean.TRUE;
1719		}
1720		}
1721
1722	+	/**
1723	+	* Analog of CheckedRunnable for RecursiveAction
1724	+	*/
1725	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1726	+	protected abstract void realCompute() throws Throwable;
1727	+
1728	+	@Override protected final void compute() {
1729	+	try {
1730	+	realCompute();
1731	+	} catch (Throwable fail) {
1732	+	threadUnexpectedException(fail);
1733	+	}
1734	+	}
1735	+	}
1736	+
1737	+	/**
1738	+	* Analog of CheckedCallable for RecursiveTask
1739	+	*/
1740	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1741	+	protected abstract T realCompute() throws Throwable;
1742	+
1743	+	@Override protected final T compute() {
1744	+	try {
1745	+	return realCompute();
1746	+	} catch (Throwable fail) {
1747	+	threadUnexpectedException(fail);
1748	+	return null;
1749	+	}
1750	+	}
1751	+	}
1752
1753		/**
1754		* For use as RejectedExecutionHandler in constructors
1755		*/
1756	<	static class NoOpREHandler implements RejectedExecutionHandler{
1757	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1756	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1757	>	public void rejectedExecution(Runnable r,
1758	>	ThreadPoolExecutor executor) {}
1759	>	}
1760	>
1761	>	/**
1762	>	* A CyclicBarrier that uses timed await and fails with
1763	>	* AssertionFailedErrors instead of throwing checked exceptions.
1764	>	*/
1765	>	public static class CheckedBarrier extends CyclicBarrier {
1766	>	public CheckedBarrier(int parties) { super(parties); }
1767	>
1768	>	public int await() {
1769	>	try {
1770	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1771	>	} catch (TimeoutException timedOut) {
1772	>	throw new AssertionFailedError("timed out");
1773	>	} catch (Exception fail) {
1774	>	AssertionFailedError afe =
1775	>	new AssertionFailedError("Unexpected exception: " + fail);
1776	>	afe.initCause(fail);
1777	>	throw afe;
1778	>	}
1779	>	}
1780	>	}
1781	>
1782	>	void checkEmpty(BlockingQueue q) {
1783	>	try {
1784	>	assertTrue(q.isEmpty());
1785	>	assertEquals(0, q.size());
1786	>	assertNull(q.peek());
1787	>	assertNull(q.poll());
1788	>	assertNull(q.poll(0, MILLISECONDS));
1789	>	assertEquals(q.toString(), "[]");
1790	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1791	>	assertFalse(q.iterator().hasNext());
1792	>	try {
1793	>	q.element();
1794	>	shouldThrow();
1795	>	} catch (NoSuchElementException success) {}
1796	>	try {
1797	>	q.iterator().next();
1798	>	shouldThrow();
1799	>	} catch (NoSuchElementException success) {}
1800	>	try {
1801	>	q.remove();
1802	>	shouldThrow();
1803	>	} catch (NoSuchElementException success) {}
1804	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1805	>	}
1806	>
1807	>	void assertSerialEquals(Object x, Object y) {
1808	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1809	>	}
1810	>
1811	>	void assertNotSerialEquals(Object x, Object y) {
1812	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1813	>	}
1814	>
1815	>	byte[] serialBytes(Object o) {
1816	>	try {
1817	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1818	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1819	>	oos.writeObject(o);
1820	>	oos.flush();
1821	>	oos.close();
1822	>	return bos.toByteArray();
1823	>	} catch (Throwable fail) {
1824	>	threadUnexpectedException(fail);
1825	>	return new byte[0];
1826	>	}
1827	>	}
1828	>
1829	>	@SuppressWarnings("unchecked")
1830	>	<T> T serialClone(T o) {
1831	>	try {
1832	>	ObjectInputStream ois = new ObjectInputStream
1833	>	(new ByteArrayInputStream(serialBytes(o)));
1834	>	T clone = (T) ois.readObject();
1835	>	assertSame(o.getClass(), clone.getClass());
1836	>	return clone;
1837	>	} catch (Throwable fail) {
1838	>	threadUnexpectedException(fail);
1839	>	return null;
1840	>	}
1841	>	}
1842	>
1843	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1844	>	Runnable... throwingActions) {
1845	>	for (Runnable throwingAction : throwingActions) {
1846	>	boolean threw = false;
1847	>	try { throwingAction.run(); }
1848	>	catch (Throwable t) {
1849	>	threw = true;
1850	>	if (!expectedExceptionClass.isInstance(t)) {
1851	>	AssertionFailedError afe =
1852	>	new AssertionFailedError
1853	>	("Expected " + expectedExceptionClass.getName() +
1854	>	", got " + t.getClass().getName());
1855	>	afe.initCause(t);
1856	>	threadUnexpectedException(afe);
1857	>	}
1858	>	}
1859	>	if (!threw)
1860	>	shouldThrow(expectedExceptionClass.getName());
1861	>	}
1862	>	}
1863	>
1864	>	public void assertIteratorExhausted(Iterator<?> it) {
1865	>	try {
1866	>	it.next();
1867	>	shouldThrow();
1868	>	} catch (NoSuchElementException success) {}
1869	>	assertFalse(it.hasNext());
1870	>	}
1871	>
1872	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1873	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1874	>	}
1875	>
1876	>	public Runnable runnableThrowing(final RuntimeException ex) {
1877	>	return new Runnable() { public void run() { throw ex; }};
1878	>	}
1879	>
1880	>	/** A reusable thread pool to be shared by tests. */
1881	>	static final ExecutorService cachedThreadPool =
1882	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1883	>	1000L, MILLISECONDS,
1884	>	new SynchronousQueue<Runnable>());
1885	>
1886	>	static <T> void shuffle(T[] array) {
1887	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1888		}
555	–
556	–
1889		}

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