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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.26 by dl, Thu Mar 31 15:24:29 2005 UTC vs.
Revision 1.216 by jsr166, Wed Jan 4 06:09:58 2017 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
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 (conformance testing mode)
12	>	* @build *
13	>	* @modules java.management
14	>	* @run junit/othervm/timeout=1000 JSR166TestCase
15	>	*/
16	>
17	>	/*
18	>	* @test
19	>	* @summary JSR-166 tck tests (whitebox tests allowed)
20	>	* @build *
21	>	* @modules java.base/java.util.concurrent:open
22	>	*          java.management
23	>	* @run junit/othervm/timeout=1000
24	>	*      -Djsr166.testImplementationDetails=true
25	>	*      JSR166TestCase
26	>	* @run junit/othervm/timeout=1000
27	>	*      -Djsr166.testImplementationDetails=true
28	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
29	>	*      JSR166TestCase
30	>	* @run junit/othervm/timeout=1000
31	>	*      -Djsr166.testImplementationDetails=true
32	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
33	>	*      -Djava.util.secureRandomSeed=true
34	>	*      JSR166TestCase
35	>	*/
36	>
37	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
38	>	import static java.util.concurrent.TimeUnit.MINUTES;
39	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
40	>
41	>	import java.io.ByteArrayInputStream;
42	>	import java.io.ByteArrayOutputStream;
43	>	import java.io.ObjectInputStream;
44	>	import java.io.ObjectOutputStream;
45	>	import java.lang.management.ManagementFactory;
46	>	import java.lang.management.ThreadInfo;
47	>	import java.lang.management.ThreadMXBean;
48	>	import java.lang.reflect.Constructor;
49	>	import java.lang.reflect.Method;
50	>	import java.lang.reflect.Modifier;
51	>	import java.nio.file.Files;
52	>	import java.nio.file.Paths;
53	>	import java.security.CodeSource;
54	>	import java.security.Permission;
55	>	import java.security.PermissionCollection;
56	>	import java.security.Permissions;
57	>	import java.security.Policy;
58	>	import java.security.ProtectionDomain;
59	>	import java.security.SecurityPermission;
60	>	import java.util.ArrayList;
61	>	import java.util.Arrays;
62	>	import java.util.Collection;
63	>	import java.util.Collections;
64	>	import java.util.Date;
65	>	import java.util.Enumeration;
66	>	import java.util.Iterator;
67	>	import java.util.List;
68	>	import java.util.NoSuchElementException;
69	>	import java.util.PropertyPermission;
70	>	import java.util.concurrent.BlockingQueue;
71	>	import java.util.concurrent.Callable;
72	>	import java.util.concurrent.CountDownLatch;
73	>	import java.util.concurrent.CyclicBarrier;
74	>	import java.util.concurrent.ExecutionException;
75	>	import java.util.concurrent.Executors;
76	>	import java.util.concurrent.ExecutorService;
77	>	import java.util.concurrent.ForkJoinPool;
78	>	import java.util.concurrent.Future;
79	>	import java.util.concurrent.RecursiveAction;
80	>	import java.util.concurrent.RecursiveTask;
81	>	import java.util.concurrent.RejectedExecutionHandler;
82	>	import java.util.concurrent.Semaphore;
83	>	import java.util.concurrent.SynchronousQueue;
84	>	import java.util.concurrent.ThreadFactory;
85	>	import java.util.concurrent.ThreadLocalRandom;
86	>	import java.util.concurrent.ThreadPoolExecutor;
87	>	import java.util.concurrent.TimeoutException;
88	>	import java.util.concurrent.atomic.AtomicBoolean;
89	>	import java.util.concurrent.atomic.AtomicReference;
90	>	import java.util.regex.Matcher;
91	>	import java.util.regex.Pattern;
92	>
93	>	import junit.framework.AssertionFailedError;
94	>	import junit.framework.Test;
95	>	import junit.framework.TestCase;
96	>	import junit.framework.TestResult;
97	>	import junit.framework.TestSuite;
98
99		/**
100		* Base class for JSR166 Junit TCK tests.  Defines some constants,
101		* utility methods and classes, as well as a simple framework for
102		* helping to make sure that assertions failing in generated threads
103		* cause the associated test that generated them to itself fail (which
104	<	* JUnit doe not otherwise arrange).  The rules for creating such
104	>	* JUnit does not otherwise arrange).  The rules for creating such
105		* tests are:
106		*
107		* <ol>
108		*
109	<	* <li> All assertions in code running in generated threads must use
110	<	* the forms {@link #threadFail} , {@link #threadAssertTrue} {@link
109	>	* <li>All assertions in code running in generated threads must use
110	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
111		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
112	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
112	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
113		* particularly recommended) for other code to use these forms too.
114		* Only the most typically used JUnit assertion methods are defined
115	<	* this way, but enough to live with.</li>
115	>	* this way, but enough to live with.
116		*
117	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
118	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
117	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
118	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
119		* them. These methods are used to clear and check for thread
120	<	* assertion failures.</li>
120	>	* assertion failures.
121		*
122	<	* <li>All delays and timeouts must use one of the constants <tt>
123	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
124	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
122	>	* <li>All delays and timeouts must use one of the constants {@code
123	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
124	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
125		* discriminable from zero time, and always allows enough time for the
126		* small amounts of computation (creating a thread, calling a few
127		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
128		* is always discriminable as larger than SHORT and smaller than
129		* MEDIUM.  And so on. These constants are set to conservative values,
130		* but even so, if there is ever any doubt, they can all be increased
131	<	* in one spot to rerun tests on slower platforms</li>
131	>	* in one spot to rerun tests on slower platforms.
132		*
133	<	* <li> All threads generated must be joined inside each test case
134	<	* method (or <tt>fail</tt> to do so) before returning from the
135	<	* method. The <tt> joinPool</tt> method can be used to do this when
136	<	* using Executors.</li>
133	>	* <li>All threads generated must be joined inside each test case
134	>	* method (or {@code fail} to do so) before returning from the
135	>	* method. The {@code joinPool} method can be used to do this when
136	>	* using Executors.
137		*
138		* </ol>
139		*
140	<	* <p> <b>Other notes</b>
140	>	* <p><b>Other notes</b>
141		* <ul>
142		*
143	<	* <li> Usually, there is one testcase method per JSR166 method
143	>	* <li>Usually, there is one testcase method per JSR166 method
144		* covering "normal" operation, and then as many exception-testing
145		* methods as there are exceptions the method can throw. Sometimes
146		* there are multiple tests per JSR166 method when the different
147		* "normal" behaviors differ significantly. And sometimes testcases
148	<	* cover multiple methods when they cannot be tested in
149	<	* isolation.</li>
150	<	*
67	<	* <li> The documentation style for testcases is to provide as javadoc
148	>	* cover multiple methods when they cannot be tested in isolation.
149	>	*
150	>	* <li>The documentation style for testcases is to provide as javadoc
151		* a simple sentence or two describing the property that the testcase
152		* method purports to test. The javadocs do not say anything about how
153	<	* the property is tested. To find out, read the code.</li>
153	>	* the property is tested. To find out, read the code.
154		*
155	<	* <li> These tests are "conformance tests", and do not attempt to
155	>	* <li>These tests are "conformance tests", and do not attempt to
156		* test throughput, latency, scalability or other performance factors
157		* (see the separate "jtreg" tests for a set intended to check these
158		* for the most central aspects of functionality.) So, most tests use
159		* the smallest sensible numbers of threads, collection sizes, etc
160	<	* needed to check basic conformance.</li>
160	>	* needed to check basic conformance.
161		*
162		* <li>The test classes currently do not declare inclusion in
163		* any particular package to simplify things for people integrating
164	<	* them in TCK test suites.</li>
164	>	* them in TCK test suites.
165		*
166	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
167	<	* runs all JSR166 unit tests.</li>
166	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
167	>	* runs all JSR166 unit tests.
168		*
169		* </ul>
170		*/
171		public class JSR166TestCase extends TestCase {
172	+	private static final boolean useSecurityManager =
173	+	Boolean.getBoolean("jsr166.useSecurityManager");
174	+
175	+	protected static final boolean expensiveTests =
176	+	Boolean.getBoolean("jsr166.expensiveTests");
177	+
178	+	/**
179	+	* If true, also run tests that are not part of the official tck
180	+	* because they test unspecified implementation details.
181	+	*/
182	+	protected static final boolean testImplementationDetails =
183	+	Boolean.getBoolean("jsr166.testImplementationDetails");
184	+
185	+	/**
186	+	* If true, report on stdout all "slow" tests, that is, ones that
187	+	* take more than profileThreshold milliseconds to execute.
188	+	*/
189	+	private static final boolean profileTests =
190	+	Boolean.getBoolean("jsr166.profileTests");
191	+
192	+	/**
193	+	* The number of milliseconds that tests are permitted for
194	+	* execution without being reported, when profileTests is set.
195	+	*/
196	+	private static final long profileThreshold =
197	+	Long.getLong("jsr166.profileThreshold", 100);
198	+
199	+	/**
200	+	* The number of repetitions per test (for tickling rare bugs).
201	+	*/
202	+	private static final int runsPerTest =
203	+	Integer.getInteger("jsr166.runsPerTest", 1);
204	+
205	+	/**
206	+	* The number of repetitions of the test suite (for finding leaks?).
207	+	*/
208	+	private static final int suiteRuns =
209	+	Integer.getInteger("jsr166.suiteRuns", 1);
210	+
211	+	/**
212	+	* Returns the value of the system property, or NaN if not defined.
213	+	*/
214	+	private static float systemPropertyValue(String name) {
215	+	String floatString = System.getProperty(name);
216	+	if (floatString == null)
217	+	return Float.NaN;
218	+	try {
219	+	return Float.parseFloat(floatString);
220	+	} catch (NumberFormatException ex) {
221	+	throw new IllegalArgumentException(
222	+	String.format("Bad float value in system property %s=%s",
223	+	name, floatString));
224	+	}
225	+	}
226	+
227	+	/**
228	+	* The scaling factor to apply to standard delays used in tests.
229	+	* May be initialized from any of:
230	+	* - the "jsr166.delay.factor" system property
231	+	* - the "test.timeout.factor" system property (as used by jtreg)
232	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
233	+	* - hard-coded fuzz factor when using a known slowpoke VM
234	+	*/
235	+	private static final float delayFactor = delayFactor();
236	+
237	+	private static float delayFactor() {
238	+	float x;
239	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
240	+	return x;
241	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
242	+	return x;
243	+	String prop = System.getProperty("java.vm.version");
244	+	if (prop != null && prop.matches(".*debug.*"))
245	+	return 4.0f; // How much slower is fastdebug than product?!
246	+	return 1.0f;
247	+	}
248	+
249	+	public JSR166TestCase() { super(); }
250	+	public JSR166TestCase(String name) { super(name); }
251	+
252	+	/**
253	+	* A filter for tests to run, matching strings of the form
254	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
255	+	* Usefully combined with jsr166.runsPerTest.
256	+	*/
257	+	private static final Pattern methodFilter = methodFilter();
258	+
259	+	private static Pattern methodFilter() {
260	+	String regex = System.getProperty("jsr166.methodFilter");
261	+	return (regex == null) ? null : Pattern.compile(regex);
262	+	}
263	+
264	+	// Instrumentation to debug very rare, but very annoying hung test runs.
265	+	static volatile TestCase currentTestCase;
266	+	// static volatile int currentRun = 0;
267	+	static {
268	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
269	+	// Avoid spurious reports with enormous runsPerTest.
270	+	// A single test case run should never take more than 1 second.
271	+	// But let's cap it at the high end too ...
272	+	final int timeoutMinutes =
273	+	Math.min(15, Math.max(runsPerTest / 60, 1));
274	+	for (TestCase lastTestCase = currentTestCase;;) {
275	+	try { MINUTES.sleep(timeoutMinutes); }
276	+	catch (InterruptedException unexpected) { break; }
277	+	if (lastTestCase == currentTestCase) {
278	+	System.err.printf(
279	+	"Looks like we're stuck running test: %s%n",
280	+	lastTestCase);
281	+	//                     System.err.printf(
282	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
283	+	//                         lastTestCase, currentRun, runsPerTest);
284	+	//                     System.err.println("availableProcessors=" +
285	+	//                         Runtime.getRuntime().availableProcessors());
286	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
287	+	dumpTestThreads();
288	+	// one stack dump is probably enough; more would be spam
289	+	break;
290	+	}
291	+	lastTestCase = currentTestCase;
292	+	}}};
293	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
294	+	thread.setDaemon(true);
295	+	thread.start();
296	+	}
297	+
298	+	//     public static String cpuModel() {
299	+	//         try {
300	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
301	+	//                 .matcher(new String(
302	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
303	+	//             matcher.find();
304	+	//             return matcher.group(1);
305	+	//         } catch (Exception ex) { return null; }
306	+	//     }
307	+
308	+	public void runBare() throws Throwable {
309	+	currentTestCase = this;
310	+	if (methodFilter == null
311	+	|| methodFilter.matcher(toString()).find())
312	+	super.runBare();
313	+	}
314	+
315	+	protected void runTest() throws Throwable {
316	+	for (int i = 0; i < runsPerTest; i++) {
317	+	// currentRun = i;
318	+	if (profileTests)
319	+	runTestProfiled();
320	+	else
321	+	super.runTest();
322	+	}
323	+	}
324	+
325	+	protected void runTestProfiled() throws Throwable {
326	+	for (int i = 0; i < 2; i++) {
327	+	long startTime = System.nanoTime();
328	+	super.runTest();
329	+	long elapsedMillis = millisElapsedSince(startTime);
330	+	if (elapsedMillis < profileThreshold)
331	+	break;
332	+	// Never report first run of any test; treat it as a
333	+	// warmup run, notably to trigger all needed classloading,
334	+	if (i > 0)
335	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
336	+	}
337	+	}
338	+
339	+	/**
340	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
341	+	*/
342	+	public static void main(String[] args) {
343	+	main(suite(), args);
344	+	}
345	+
346	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
347	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
348	+	long runTime;
349	+	public void startTest(Test test) {}
350	+	protected void printHeader(long runTime) {
351	+	this.runTime = runTime; // defer printing for later
352	+	}
353	+	protected void printFooter(TestResult result) {
354	+	if (result.wasSuccessful()) {
355	+	getWriter().println("OK (" + result.runCount() + " tests)"
356	+	+ "  Time: " + elapsedTimeAsString(runTime));
357	+	} else {
358	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
359	+	super.printFooter(result);
360	+	}
361	+	}
362	+	}
363	+
364	+	/**
365	+	* Returns a TestRunner that doesn't bother with unnecessary
366	+	* fluff, like printing a "." for each test case.
367	+	*/
368	+	static junit.textui.TestRunner newPithyTestRunner() {
369	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
370	+	runner.setPrinter(new PithyResultPrinter(System.out));
371	+	return runner;
372	+	}
373	+
374		/**
375	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
376	<	*/
377	<	public static void main (String[] args) {
378	<	int iters = 1;
379	<	if (args.length > 0)
380	<	iters = Integer.parseInt(args[0]);
381	<	Test s = suite();
382	<	for (int i = 0; i < iters; ++i) {
383	<	junit.textui.TestRunner.run (s);
375	>	* Runs all unit tests in the given test suite.
376	>	* Actual behavior influenced by jsr166.* system properties.
377	>	*/
378	>	static void main(Test suite, String[] args) {
379	>	if (useSecurityManager) {
380	>	System.err.println("Setting a permissive security manager");
381	>	Policy.setPolicy(permissivePolicy());
382	>	System.setSecurityManager(new SecurityManager());
383	>	}
384	>	for (int i = 0; i < suiteRuns; i++) {
385	>	TestResult result = newPithyTestRunner().doRun(suite);
386	>	if (!result.wasSuccessful())
387	>	System.exit(1);
388		System.gc();
389		System.runFinalization();
390		}
391	<	System.exit(0);
391	>	}
392	>
393	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
394	>	TestSuite suite = new TestSuite();
395	>	for (Object suiteOrClass : suiteOrClasses) {
396	>	if (suiteOrClass instanceof TestSuite)
397	>	suite.addTest((TestSuite) suiteOrClass);
398	>	else if (suiteOrClass instanceof Class)
399	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
400	>	else
401	>	throw new ClassCastException("not a test suite or class");
402	>	}
403	>	return suite;
404	>	}
405	>
406	>	public static void addNamedTestClasses(TestSuite suite,
407	>	String... testClassNames) {
408	>	for (String testClassName : testClassNames) {
409	>	try {
410	>	Class<?> testClass = Class.forName(testClassName);
411	>	Method m = testClass.getDeclaredMethod("suite",
412	>	new Class<?>[0]);
413	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
414	>	} catch (Exception e) {
415	>	throw new Error("Missing test class", e);
416	>	}
417	>	}
418	>	}
419	>
420	>	public static final double JAVA_CLASS_VERSION;
421	>	public static final String JAVA_SPECIFICATION_VERSION;
422	>	static {
423	>	try {
424	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
425	>	new java.security.PrivilegedAction<Double>() {
426	>	public Double run() {
427	>	return Double.valueOf(System.getProperty("java.class.version"));}});
428	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
429	>	new java.security.PrivilegedAction<String>() {
430	>	public String run() {
431	>	return System.getProperty("java.specification.version");}});
432	>	} catch (Throwable t) {
433	>	throw new Error(t);
434	>	}
435	>	}
436	>
437	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
438	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
439	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
440	>	public static boolean atLeastJava9() {
441	>	return JAVA_CLASS_VERSION >= 53.0
442	>	// As of 2015-09, java9 still uses 52.0 class file version
443	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
444	>	}
445	>	public static boolean atLeastJava10() {
446	>	return JAVA_CLASS_VERSION >= 54.0
447	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
448		}
449
450		/**
451	<	* Collects all JSR166 unit tests as one suite
452	<	*/
453	<	public static Test suite ( ) {
454	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
455	<
456	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
457	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
458	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
459	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
460	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
461	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
462	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
463	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
464	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
465	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
466	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
467	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
468	<	suite.addTest(new TestSuite(AtomicLongTest.class));
469	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
470	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
471	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
472	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
473	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
474	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
475	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
476	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
477	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
478	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
479	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
480	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
481	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
482	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
483	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
484	<	suite.addTest(new TestSuite(DelayQueueTest.class));
485	<	suite.addTest(new TestSuite(ExchangerTest.class));
486	<	suite.addTest(new TestSuite(ExecutorsTest.class));
487	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
488	<	suite.addTest(new TestSuite(FutureTaskTest.class));
489	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
490	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
491	<	suite.addTest(new TestSuite(LinkedListTest.class));
492	<	suite.addTest(new TestSuite(LockSupportTest.class));
493	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
494	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
495	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
496	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
497	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
498	<	suite.addTest(new TestSuite(SemaphoreTest.class));
499	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
500	<	suite.addTest(new TestSuite(SystemTest.class));
501	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
502	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
503	<	suite.addTest(new TestSuite(ThreadTest.class));
504	<	suite.addTest(new TestSuite(TimeUnitTest.class));
505	<	suite.addTest(new TestSuite(TreeMapTest.class));
506	<	suite.addTest(new TestSuite(TreeSetTest.class));
507	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
508	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
509	<
451	>	* Collects all JSR166 unit tests as one suite.
452	>	*/
453	>	public static Test suite() {
454	>	// Java7+ test classes
455	>	TestSuite suite = newTestSuite(
456	>	ForkJoinPoolTest.suite(),
457	>	ForkJoinTaskTest.suite(),
458	>	RecursiveActionTest.suite(),
459	>	RecursiveTaskTest.suite(),
460	>	LinkedTransferQueueTest.suite(),
461	>	PhaserTest.suite(),
462	>	ThreadLocalRandomTest.suite(),
463	>	AbstractExecutorServiceTest.suite(),
464	>	AbstractQueueTest.suite(),
465	>	AbstractQueuedSynchronizerTest.suite(),
466	>	AbstractQueuedLongSynchronizerTest.suite(),
467	>	ArrayBlockingQueueTest.suite(),
468	>	ArrayDequeTest.suite(),
469	>	ArrayListTest.suite(),
470	>	AtomicBooleanTest.suite(),
471	>	AtomicIntegerArrayTest.suite(),
472	>	AtomicIntegerFieldUpdaterTest.suite(),
473	>	AtomicIntegerTest.suite(),
474	>	AtomicLongArrayTest.suite(),
475	>	AtomicLongFieldUpdaterTest.suite(),
476	>	AtomicLongTest.suite(),
477	>	AtomicMarkableReferenceTest.suite(),
478	>	AtomicReferenceArrayTest.suite(),
479	>	AtomicReferenceFieldUpdaterTest.suite(),
480	>	AtomicReferenceTest.suite(),
481	>	AtomicStampedReferenceTest.suite(),
482	>	ConcurrentHashMapTest.suite(),
483	>	ConcurrentLinkedDequeTest.suite(),
484	>	ConcurrentLinkedQueueTest.suite(),
485	>	ConcurrentSkipListMapTest.suite(),
486	>	ConcurrentSkipListSubMapTest.suite(),
487	>	ConcurrentSkipListSetTest.suite(),
488	>	ConcurrentSkipListSubSetTest.suite(),
489	>	CopyOnWriteArrayListTest.suite(),
490	>	CopyOnWriteArraySetTest.suite(),
491	>	CountDownLatchTest.suite(),
492	>	CountedCompleterTest.suite(),
493	>	CyclicBarrierTest.suite(),
494	>	DelayQueueTest.suite(),
495	>	EntryTest.suite(),
496	>	ExchangerTest.suite(),
497	>	ExecutorsTest.suite(),
498	>	ExecutorCompletionServiceTest.suite(),
499	>	FutureTaskTest.suite(),
500	>	LinkedBlockingDequeTest.suite(),
501	>	LinkedBlockingQueueTest.suite(),
502	>	LinkedListTest.suite(),
503	>	LockSupportTest.suite(),
504	>	PriorityBlockingQueueTest.suite(),
505	>	PriorityQueueTest.suite(),
506	>	ReentrantLockTest.suite(),
507	>	ReentrantReadWriteLockTest.suite(),
508	>	ScheduledExecutorTest.suite(),
509	>	ScheduledExecutorSubclassTest.suite(),
510	>	SemaphoreTest.suite(),
511	>	SynchronousQueueTest.suite(),
512	>	SystemTest.suite(),
513	>	ThreadLocalTest.suite(),
514	>	ThreadPoolExecutorTest.suite(),
515	>	ThreadPoolExecutorSubclassTest.suite(),
516	>	ThreadTest.suite(),
517	>	TimeUnitTest.suite(),
518	>	TreeMapTest.suite(),
519	>	TreeSetTest.suite(),
520	>	TreeSubMapTest.suite(),
521	>	TreeSubSetTest.suite(),
522	>	VectorTest.suite());
523	>
524	>	// Java8+ test classes
525	>	if (atLeastJava8()) {
526	>	String[] java8TestClassNames = {
527	>	"ArrayDeque8Test",
528	>	"Atomic8Test",
529	>	"CompletableFutureTest",
530	>	"ConcurrentHashMap8Test",
531	>	"CountedCompleter8Test",
532	>	"DoubleAccumulatorTest",
533	>	"DoubleAdderTest",
534	>	"ForkJoinPool8Test",
535	>	"ForkJoinTask8Test",
536	>	"LinkedBlockingDeque8Test",
537	>	"LinkedBlockingQueue8Test",
538	>	"LongAccumulatorTest",
539	>	"LongAdderTest",
540	>	"SplittableRandomTest",
541	>	"StampedLockTest",
542	>	"SubmissionPublisherTest",
543	>	"ThreadLocalRandom8Test",
544	>	"TimeUnit8Test",
545	>	};
546	>	addNamedTestClasses(suite, java8TestClassNames);
547	>	}
548	>
549	>	// Java9+ test classes
550	>	if (atLeastJava9()) {
551	>	String[] java9TestClassNames = {
552	>	"AtomicBoolean9Test",
553	>	"AtomicInteger9Test",
554	>	"AtomicIntegerArray9Test",
555	>	"AtomicLong9Test",
556	>	"AtomicLongArray9Test",
557	>	"AtomicReference9Test",
558	>	"AtomicReferenceArray9Test",
559	>	"ExecutorCompletionService9Test",
560	>	};
561	>	addNamedTestClasses(suite, java9TestClassNames);
562	>	}
563	>
564		return suite;
565		}
566
567	+	/** Returns list of junit-style test method names in given class. */
568	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
569	+	Method[] methods = testClass.getDeclaredMethods();
570	+	ArrayList<String> names = new ArrayList<>(methods.length);
571	+	for (Method method : methods) {
572	+	if (method.getName().startsWith("test")
573	+	&& Modifier.isPublic(method.getModifiers())
574	+	// method.getParameterCount() requires jdk8+
575	+	&& method.getParameterTypes().length == 0) {
576	+	names.add(method.getName());
577	+	}
578	+	}
579	+	return names;
580	+	}
581	+
582	+	/**
583	+	* Returns junit-style testSuite for the given test class, but
584	+	* parameterized by passing extra data to each test.
585	+	*/
586	+	public static <ExtraData> Test parameterizedTestSuite
587	+	(Class<? extends JSR166TestCase> testClass,
588	+	Class<ExtraData> dataClass,
589	+	ExtraData data) {
590	+	try {
591	+	TestSuite suite = new TestSuite();
592	+	Constructor c =
593	+	testClass.getDeclaredConstructor(dataClass, String.class);
594	+	for (String methodName : testMethodNames(testClass))
595	+	suite.addTest((Test) c.newInstance(data, methodName));
596	+	return suite;
597	+	} catch (Exception e) {
598	+	throw new Error(e);
599	+	}
600	+	}
601	+
602	+	/**
603	+	* Returns junit-style testSuite for the jdk8 extension of the
604	+	* given test class, but parameterized by passing extra data to
605	+	* each test.  Uses reflection to allow compilation in jdk7.
606	+	*/
607	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
608	+	(Class<? extends JSR166TestCase> testClass,
609	+	Class<ExtraData> dataClass,
610	+	ExtraData data) {
611	+	if (atLeastJava8()) {
612	+	String name = testClass.getName();
613	+	String name8 = name.replaceAll("Test$", "8Test");
614	+	if (name.equals(name8)) throw new Error(name);
615	+	try {
616	+	return (Test)
617	+	Class.forName(name8)
618	+	.getMethod("testSuite", new Class[] { dataClass })
619	+	.invoke(null, data);
620	+	} catch (Exception e) {
621	+	throw new Error(e);
622	+	}
623	+	} else {
624	+	return new TestSuite();
625	+	}
626	+	}
627	+
628	+	// Delays for timing-dependent tests, in milliseconds.
629
630		public static long SHORT_DELAY_MS;
631		public static long SMALL_DELAY_MS;
632		public static long MEDIUM_DELAY_MS;
633		public static long LONG_DELAY_MS;
634
174	–
635		/**
636	<	* Return the shortest timed delay. This could
637	<	* be reimplemented to use for example a Property.
638	<	*/
636	>	* Returns the shortest timed delay. This can be scaled up for
637	>	* slow machines using the jsr166.delay.factor system property,
638	>	* or via jtreg's -timeoutFactor: flag.
639	>	* http://openjdk.java.net/jtreg/command-help.html
640	>	*/
641		protected long getShortDelay() {
642	<	return 50;
642	>	return (long) (50 * delayFactor);
643		}
644
183	–
645		/**
646	<	* Set delays as multiples of SHORT_DELAY.
646	>	* Sets delays as multiples of SHORT_DELAY.
647		*/
648	<	protected  void setDelays() {
648	>	protected void setDelays() {
649		SHORT_DELAY_MS = getShortDelay();
650	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
650	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
651		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
652	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
652	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
653	>	}
654	>
655	>	/**
656	>	* Returns a timeout in milliseconds to be used in tests that
657	>	* verify that operations block or time out.
658	>	*/
659	>	long timeoutMillis() {
660	>	return SHORT_DELAY_MS / 4;
661	>	}
662	>
663	>	/**
664	>	* Returns a new Date instance representing a time at least
665	>	* delayMillis milliseconds in the future.
666	>	*/
667	>	Date delayedDate(long delayMillis) {
668	>	// Add 1 because currentTimeMillis is known to round into the past.
669	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
670		}
671
672		/**
673	<	* Flag set true if any threadAssert methods fail
673	>	* The first exception encountered if any threadAssertXXX method fails.
674		*/
675	<	volatile boolean threadFailed;
675	>	private final AtomicReference<Throwable> threadFailure
676	>	= new AtomicReference<>(null);
677
678		/**
679	<	* Initialize test to indicate that no thread assertions have failed
679	>	* Records an exception so that it can be rethrown later in the test
680	>	* harness thread, triggering a test case failure.  Only the first
681	>	* failure is recorded; subsequent calls to this method from within
682	>	* the same test have no effect.
683		*/
684	<	public void setUp() {
684	>	public void threadRecordFailure(Throwable t) {
685	>	System.err.println(t);
686	>	dumpTestThreads();
687	>	threadFailure.compareAndSet(null, t);
688	>	}
689	>
690	>	public void setUp() {
691		setDelays();
692	<	threadFailed = false;
692	>	}
693	>
694	>	void tearDownFail(String format, Object... args) {
695	>	String msg = toString() + ": " + String.format(format, args);
696	>	System.err.println(msg);
697	>	dumpTestThreads();
698	>	throw new AssertionFailedError(msg);
699		}
700
701		/**
702	<	* Trigger test case failure if any thread assertions have failed
702	>	* Extra checks that get done for all test cases.
703	>	*
704	>	* Triggers test case failure if any thread assertions have failed,
705	>	* by rethrowing, in the test harness thread, any exception recorded
706	>	* earlier by threadRecordFailure.
707	>	*
708	>	* Triggers test case failure if interrupt status is set in the main thread.
709		*/
710	<	public void tearDown() {
711	<	assertFalse(threadFailed);
710	>	public void tearDown() throws Exception {
711	>	Throwable t = threadFailure.getAndSet(null);
712	>	if (t != null) {
713	>	if (t instanceof Error)
714	>	throw (Error) t;
715	>	else if (t instanceof RuntimeException)
716	>	throw (RuntimeException) t;
717	>	else if (t instanceof Exception)
718	>	throw (Exception) t;
719	>	else {
720	>	AssertionFailedError afe =
721	>	new AssertionFailedError(t.toString());
722	>	afe.initCause(t);
723	>	throw afe;
724	>	}
725	>	}
726	>
727	>	if (Thread.interrupted())
728	>	tearDownFail("interrupt status set in main thread");
729	>
730	>	checkForkJoinPoolThreadLeaks();
731	>	}
732	>
733	>	/**
734	>	* Finds missing PoolCleaners
735	>	*/
736	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
737	>	Thread[] survivors = new Thread[7];
738	>	int count = Thread.enumerate(survivors);
739	>	for (int i = 0; i < count; i++) {
740	>	Thread thread = survivors[i];
741	>	String name = thread.getName();
742	>	if (name.startsWith("ForkJoinPool-")) {
743	>	// give thread some time to terminate
744	>	thread.join(LONG_DELAY_MS);
745	>	if (thread.isAlive())
746	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
747	>	thread);
748	>	}
749	>	}
750	>
751	>	if (!ForkJoinPool.commonPool()
752	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
753	>	tearDownFail("ForkJoin common pool thread stuck");
754		}
755
756		/**
757	<	* Fail, also setting status to indicate current testcase should fail
758	<	*/
757	>	* Just like fail(reason), but additionally recording (using
758	>	* threadRecordFailure) any AssertionFailedError thrown, so that
759	>	* the current testcase will fail.
760	>	*/
761		public void threadFail(String reason) {
762	<	threadFailed = true;
763	<	fail(reason);
762	>	try {
763	>	fail(reason);
764	>	} catch (AssertionFailedError t) {
765	>	threadRecordFailure(t);
766	>	throw t;
767	>	}
768		}
769
770		/**
771	<	* If expression not true, set status to indicate current testcase
772	<	* should fail
773	<	*/
771	>	* Just like assertTrue(b), but additionally recording (using
772	>	* threadRecordFailure) any AssertionFailedError thrown, so that
773	>	* the current testcase will fail.
774	>	*/
775		public void threadAssertTrue(boolean b) {
776	<	if (!b) {
228	<	threadFailed = true;
776	>	try {
777		assertTrue(b);
778	+	} catch (AssertionFailedError t) {
779	+	threadRecordFailure(t);
780	+	throw t;
781		}
782		}
783
784		/**
785	<	* If expression not false, set status to indicate current testcase
786	<	* should fail
787	<	*/
785	>	* Just like assertFalse(b), but additionally recording (using
786	>	* threadRecordFailure) any AssertionFailedError thrown, so that
787	>	* the current testcase will fail.
788	>	*/
789		public void threadAssertFalse(boolean b) {
790	<	if (b) {
239	<	threadFailed = true;
790	>	try {
791		assertFalse(b);
792	+	} catch (AssertionFailedError t) {
793	+	threadRecordFailure(t);
794	+	throw t;
795		}
796		}
797
798		/**
799	<	* If argument not null, set status to indicate current testcase
800	<	* should fail
801	<	*/
799	>	* Just like assertNull(x), but additionally recording (using
800	>	* threadRecordFailure) any AssertionFailedError thrown, so that
801	>	* the current testcase will fail.
802	>	*/
803		public void threadAssertNull(Object x) {
804	<	if (x != null) {
250	<	threadFailed = true;
804	>	try {
805		assertNull(x);
806	+	} catch (AssertionFailedError t) {
807	+	threadRecordFailure(t);
808	+	throw t;
809		}
810		}
811
812		/**
813	<	* If arguments not equal, set status to indicate current testcase
814	<	* should fail
815	<	*/
813	>	* Just like assertEquals(x, y), but additionally recording (using
814	>	* threadRecordFailure) any AssertionFailedError thrown, so that
815	>	* the current testcase will fail.
816	>	*/
817		public void threadAssertEquals(long x, long y) {
818	<	if (x != y) {
261	<	threadFailed = true;
818	>	try {
819		assertEquals(x, y);
820	+	} catch (AssertionFailedError t) {
821	+	threadRecordFailure(t);
822	+	throw t;
823		}
824		}
825
826		/**
827	<	* If arguments not equal, set status to indicate current testcase
828	<	* should fail
829	<	*/
827	>	* Just like assertEquals(x, y), but additionally recording (using
828	>	* threadRecordFailure) any AssertionFailedError thrown, so that
829	>	* the current testcase will fail.
830	>	*/
831		public void threadAssertEquals(Object x, Object y) {
832	<	if (x != y && (x == null || !x.equals(y))) {
272	<	threadFailed = true;
832	>	try {
833		assertEquals(x, y);
834	+	} catch (AssertionFailedError fail) {
835	+	threadRecordFailure(fail);
836	+	throw fail;
837	+	} catch (Throwable fail) {
838	+	threadUnexpectedException(fail);
839	+	}
840	+	}
841	+
842	+	/**
843	+	* Just like assertSame(x, y), but additionally recording (using
844	+	* threadRecordFailure) any AssertionFailedError thrown, so that
845	+	* the current testcase will fail.
846	+	*/
847	+	public void threadAssertSame(Object x, Object y) {
848	+	try {
849	+	assertSame(x, y);
850	+	} catch (AssertionFailedError fail) {
851	+	threadRecordFailure(fail);
852	+	throw fail;
853		}
854		}
855
856		/**
857	<	* threadFail with message "should throw exception"
858	<	*/
857	>	* Calls threadFail with message "should throw exception".
858	>	*/
859		public void threadShouldThrow() {
860	<	threadFailed = true;
861	<	fail("should throw exception");
860	>	threadFail("should throw exception");
861	>	}
862	>
863	>	/**
864	>	* Calls threadFail with message "should throw" + exceptionName.
865	>	*/
866	>	public void threadShouldThrow(String exceptionName) {
867	>	threadFail("should throw " + exceptionName);
868	>	}
869	>
870	>	/**
871	>	* Records the given exception using {@link #threadRecordFailure},
872	>	* then rethrows the exception, wrapping it in an
873	>	* AssertionFailedError if necessary.
874	>	*/
875	>	public void threadUnexpectedException(Throwable t) {
876	>	threadRecordFailure(t);
877	>	t.printStackTrace();
878	>	if (t instanceof RuntimeException)
879	>	throw (RuntimeException) t;
880	>	else if (t instanceof Error)
881	>	throw (Error) t;
882	>	else {
883	>	AssertionFailedError afe =
884	>	new AssertionFailedError("unexpected exception: " + t);
885	>	afe.initCause(t);
886	>	throw afe;
887	>	}
888	>	}
889	>
890	>	/**
891	>	* Delays, via Thread.sleep, for the given millisecond delay, but
892	>	* if the sleep is shorter than specified, may re-sleep or yield
893	>	* until time elapses.  Ensures that the given time, as measured
894	>	* by System.nanoTime(), has elapsed.
895	>	*/
896	>	static void delay(long millis) throws InterruptedException {
897	>	long nanos = millis * (1000 * 1000);
898	>	final long wakeupTime = System.nanoTime() + nanos;
899	>	do {
900	>	if (millis > 0L)
901	>	Thread.sleep(millis);
902	>	else // too short to sleep
903	>	Thread.yield();
904	>	nanos = wakeupTime - System.nanoTime();
905	>	millis = nanos / (1000 * 1000);
906	>	} while (nanos >= 0L);
907		}
908
909		/**
910	<	* threadFail with message "Unexpected exception"
910	>	* Allows use of try-with-resources with per-test thread pools.
911		*/
912	<	public void threadUnexpectedException() {
913	<	threadFailed = true;
914	<	fail("Unexpected exception");
912	>	class PoolCleaner implements AutoCloseable {
913	>	private final ExecutorService pool;
914	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
915	>	public void close() { joinPool(pool); }
916	>	}
917	>
918	>	/**
919	>	* An extension of PoolCleaner that has an action to release the pool.
920	>	*/
921	>	class PoolCleanerWithReleaser extends PoolCleaner {
922	>	private final Runnable releaser;
923	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
924	>	super(pool);
925	>	this.releaser = releaser;
926	>	}
927	>	public void close() {
928	>	try {
929	>	releaser.run();
930	>	} finally {
931	>	super.close();
932	>	}
933	>	}
934	>	}
935	>
936	>	PoolCleaner cleaner(ExecutorService pool) {
937	>	return new PoolCleaner(pool);
938	>	}
939	>
940	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
941	>	return new PoolCleanerWithReleaser(pool, releaser);
942	>	}
943	>
944	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
945	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
946		}
947
948	+	Runnable releaser(final CountDownLatch latch) {
949	+	return new Runnable() { public void run() {
950	+	do { latch.countDown(); }
951	+	while (latch.getCount() > 0);
952	+	}};
953	+	}
954	+
955	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
956	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
957	+	}
958	+
959	+	Runnable releaser(final AtomicBoolean flag) {
960	+	return new Runnable() { public void run() { flag.set(true); }};
961	+	}
962
963		/**
964	<	* Wait out termination of a thread pool or fail doing so
964	>	* Waits out termination of a thread pool or fails doing so.
965		*/
966	<	public void joinPool(ExecutorService exec) {
966	>	void joinPool(ExecutorService pool) {
967		try {
968	<	exec.shutdown();
969	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
970	<	} catch(SecurityException ok) {
968	>	pool.shutdown();
969	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
970	>	try {
971	>	threadFail("ExecutorService " + pool +
972	>	" did not terminate in a timely manner");
973	>	} finally {
974	>	// last resort, for the benefit of subsequent tests
975	>	pool.shutdownNow();
976	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
977	>	}
978	>	}
979	>	} catch (SecurityException ok) {
980		// Allowed in case test doesn't have privs
981	<	} catch(InterruptedException ie) {
982	<	fail("Unexpected exception");
981	>	} catch (InterruptedException fail) {
982	>	threadFail("Unexpected InterruptedException");
983		}
984		}
985
986	+	/**
987	+	* Like Runnable, but with the freedom to throw anything.
988	+	* junit folks had the same idea:
989	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
990	+	*/
991	+	interface Action { public void run() throws Throwable; }
992	+
993	+	/**
994	+	* Runs all the given actions in parallel, failing if any fail.
995	+	* Useful for running multiple variants of tests that are
996	+	* necessarily individually slow because they must block.
997	+	*/
998	+	void testInParallel(Action ... actions) {
999	+	ExecutorService pool = Executors.newCachedThreadPool();
1000	+	try (PoolCleaner cleaner = cleaner(pool)) {
1001	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1002	+	for (final Action action : actions)
1003	+	futures.add(pool.submit(new CheckedRunnable() {
1004	+	public void realRun() throws Throwable { action.run();}}));
1005	+	for (Future<?> future : futures)
1006	+	try {
1007	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1008	+	} catch (ExecutionException ex) {
1009	+	threadUnexpectedException(ex.getCause());
1010	+	} catch (Exception ex) {
1011	+	threadUnexpectedException(ex);
1012	+	}
1013	+	}
1014	+	}
1015	+
1016	+	/**
1017	+	* A debugging tool to print stack traces of most threads, as jstack does.
1018	+	* Uninteresting threads are filtered out.
1019	+	*/
1020	+	static void dumpTestThreads() {
1021	+	SecurityManager sm = System.getSecurityManager();
1022	+	if (sm != null) {
1023	+	try {
1024	+	System.setSecurityManager(null);
1025	+	} catch (SecurityException giveUp) {
1026	+	return;
1027	+	}
1028	+	}
1029	+
1030	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1031	+	System.err.println("------ stacktrace dump start ------");
1032	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1033	+	final String name = info.getThreadName();
1034	+	String lockName;
1035	+	if ("Signal Dispatcher".equals(name))
1036	+	continue;
1037	+	if ("Reference Handler".equals(name)
1038	+	&& (lockName = info.getLockName()) != null
1039	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1040	+	continue;
1041	+	if ("Finalizer".equals(name)
1042	+	&& (lockName = info.getLockName()) != null
1043	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1044	+	continue;
1045	+	if ("checkForWedgedTest".equals(name))
1046	+	continue;
1047	+	System.err.print(info);
1048	+	}
1049	+	System.err.println("------ stacktrace dump end ------");
1050	+
1051	+	if (sm != null) System.setSecurityManager(sm);
1052	+	}
1053	+
1054	+	/**
1055	+	* Checks that thread does not terminate within the default
1056	+	* millisecond delay of {@code timeoutMillis()}.
1057	+	*/
1058	+	void assertThreadStaysAlive(Thread thread) {
1059	+	assertThreadStaysAlive(thread, timeoutMillis());
1060	+	}
1061	+
1062	+	/**
1063	+	* Checks that thread does not terminate within the given millisecond delay.
1064	+	*/
1065	+	void assertThreadStaysAlive(Thread thread, long millis) {
1066	+	try {
1067	+	// No need to optimize the failing case via Thread.join.
1068	+	delay(millis);
1069	+	assertTrue(thread.isAlive());
1070	+	} catch (InterruptedException fail) {
1071	+	threadFail("Unexpected InterruptedException");
1072	+	}
1073	+	}
1074
1075		/**
1076	<	* fail with message "should throw exception"
1077	<	*/
1076	>	* Checks that the threads do not terminate within the default
1077	>	* millisecond delay of {@code timeoutMillis()}.
1078	>	*/
1079	>	void assertThreadsStayAlive(Thread... threads) {
1080	>	assertThreadsStayAlive(timeoutMillis(), threads);
1081	>	}
1082	>
1083	>	/**
1084	>	* Checks that the threads do not terminate within the given millisecond delay.
1085	>	*/
1086	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1087	>	try {
1088	>	// No need to optimize the failing case via Thread.join.
1089	>	delay(millis);
1090	>	for (Thread thread : threads)
1091	>	assertTrue(thread.isAlive());
1092	>	} catch (InterruptedException fail) {
1093	>	threadFail("Unexpected InterruptedException");
1094	>	}
1095	>	}
1096	>
1097	>	/**
1098	>	* Checks that future.get times out, with the default timeout of
1099	>	* {@code timeoutMillis()}.
1100	>	*/
1101	>	void assertFutureTimesOut(Future future) {
1102	>	assertFutureTimesOut(future, timeoutMillis());
1103	>	}
1104	>
1105	>	/**
1106	>	* Checks that future.get times out, with the given millisecond timeout.
1107	>	*/
1108	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1109	>	long startTime = System.nanoTime();
1110	>	try {
1111	>	future.get(timeoutMillis, MILLISECONDS);
1112	>	shouldThrow();
1113	>	} catch (TimeoutException success) {
1114	>	} catch (Exception fail) {
1115	>	threadUnexpectedException(fail);
1116	>	} finally { future.cancel(true); }
1117	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1118	>	}
1119	>
1120	>	/**
1121	>	* Fails with message "should throw exception".
1122	>	*/
1123		public void shouldThrow() {
1124		fail("Should throw exception");
1125		}
1126
1127		/**
1128	<	* fail with message "Unexpected exception"
1128	>	* Fails with message "should throw " + exceptionName.
1129		*/
1130	<	public void unexpectedException() {
1131	<	fail("Unexpected exception");
1130	>	public void shouldThrow(String exceptionName) {
1131	>	fail("Should throw " + exceptionName);
1132		}
1133
323	–
1134		/**
1135		* The number of elements to place in collections, arrays, etc.
1136		*/
1137	<	static final int SIZE = 20;
1137	>	public static final int SIZE = 20;
1138
1139		// Some convenient Integer constants
1140
1141	<	static final Integer zero = new Integer(0);
1142	<	static final Integer one = new Integer(1);
1143	<	static final Integer two = new Integer(2);
1144	<	static final Integer three  = new Integer(3);
1145	<	static final Integer four  = new Integer(4);
1146	<	static final Integer five  = new Integer(5);
1147	<	static final Integer six = new Integer(6);
1148	<	static final Integer seven = new Integer(7);
1149	<	static final Integer eight = new Integer(8);
1150	<	static final Integer nine = new Integer(9);
1151	<	static final Integer m1  = new Integer(-1);
1152	<	static final Integer m2  = new Integer(-2);
1153	<	static final Integer m3  = new Integer(-3);
1154	<	static final Integer m4 = new Integer(-4);
1155	<	static final Integer m5 = new Integer(-5);
1156	<	static final Integer m10 = new Integer(-10);
1141	>	public static final Integer zero  = new Integer(0);
1142	>	public static final Integer one   = new Integer(1);
1143	>	public static final Integer two   = new Integer(2);
1144	>	public static final Integer three = new Integer(3);
1145	>	public static final Integer four  = new Integer(4);
1146	>	public static final Integer five  = new Integer(5);
1147	>	public static final Integer six   = new Integer(6);
1148	>	public static final Integer seven = new Integer(7);
1149	>	public static final Integer eight = new Integer(8);
1150	>	public static final Integer nine  = new Integer(9);
1151	>	public static final Integer m1  = new Integer(-1);
1152	>	public static final Integer m2  = new Integer(-2);
1153	>	public static final Integer m3  = new Integer(-3);
1154	>	public static final Integer m4  = new Integer(-4);
1155	>	public static final Integer m5  = new Integer(-5);
1156	>	public static final Integer m6  = new Integer(-6);
1157	>	public static final Integer m10 = new Integer(-10);
1158	>
1159	>	/**
1160	>	* Runs Runnable r with a security policy that permits precisely
1161	>	* the specified permissions.  If there is no current security
1162	>	* manager, the runnable is run twice, both with and without a
1163	>	* security manager.  We require that any security manager permit
1164	>	* getPolicy/setPolicy.
1165	>	*/
1166	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1167	>	SecurityManager sm = System.getSecurityManager();
1168	>	if (sm == null) {
1169	>	r.run();
1170	>	}
1171	>	runWithSecurityManagerWithPermissions(r, permissions);
1172	>	}
1173
1174	+	/**
1175	+	* Runs Runnable r with a security policy that permits precisely
1176	+	* the specified permissions.  If there is no current security
1177	+	* manager, a temporary one is set for the duration of the
1178	+	* Runnable.  We require that any security manager permit
1179	+	* getPolicy/setPolicy.
1180	+	*/
1181	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1182	+	Permission... permissions) {
1183	+	SecurityManager sm = System.getSecurityManager();
1184	+	if (sm == null) {
1185	+	Policy savedPolicy = Policy.getPolicy();
1186	+	try {
1187	+	Policy.setPolicy(permissivePolicy());
1188	+	System.setSecurityManager(new SecurityManager());
1189	+	runWithSecurityManagerWithPermissions(r, permissions);
1190	+	} finally {
1191	+	System.setSecurityManager(null);
1192	+	Policy.setPolicy(savedPolicy);
1193	+	}
1194	+	} else {
1195	+	Policy savedPolicy = Policy.getPolicy();
1196	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1197	+	Policy.setPolicy(policy);
1198	+
1199	+	try {
1200	+	r.run();
1201	+	} finally {
1202	+	policy.addPermission(new SecurityPermission("setPolicy"));
1203	+	Policy.setPolicy(savedPolicy);
1204	+	}
1205	+	}
1206	+	}
1207	+
1208	+	/**
1209	+	* Runs a runnable without any permissions.
1210	+	*/
1211	+	public void runWithoutPermissions(Runnable r) {
1212	+	runWithPermissions(r);
1213	+	}
1214
1215		/**
1216		* A security policy where new permissions can be dynamically added
1217		* or all cleared.
1218		*/
1219	<	static class AdjustablePolicy extends java.security.Policy {
1219	>	public static class AdjustablePolicy extends java.security.Policy {
1220		Permissions perms = new Permissions();
1221	<	AdjustablePolicy() { }
1221	>	AdjustablePolicy(Permission... permissions) {
1222	>	for (Permission permission : permissions)
1223	>	perms.add(permission);
1224	>	}
1225		void addPermission(Permission perm) { perms.add(perm); }
1226		void clearPermissions() { perms = new Permissions(); }
1227	<	public PermissionCollection getPermissions(CodeSource cs) {
1228	<	return perms;
1229	<	}
1230	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1231	<	return perms;
1232	<	}
1233	<	public boolean implies(ProtectionDomain pd, Permission p) {
1234	<	return perms.implies(p);
1235	<	}
1236	<	public void refresh() {}
1227	>	public PermissionCollection getPermissions(CodeSource cs) {
1228	>	return perms;
1229	>	}
1230	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1231	>	return perms;
1232	>	}
1233	>	public boolean implies(ProtectionDomain pd, Permission p) {
1234	>	return perms.implies(p);
1235	>	}
1236	>	public void refresh() {}
1237	>	public String toString() {
1238	>	List<Permission> ps = new ArrayList<>();
1239	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1240	>	ps.add(e.nextElement());
1241	>	return "AdjustablePolicy with permissions " + ps;
1242	>	}
1243		}
1244
1245	+	/**
1246	+	* Returns a policy containing all the permissions we ever need.
1247	+	*/
1248	+	public static Policy permissivePolicy() {
1249	+	return new AdjustablePolicy
1250	+	// Permissions j.u.c. needs directly
1251	+	(new RuntimePermission("modifyThread"),
1252	+	new RuntimePermission("getClassLoader"),
1253	+	new RuntimePermission("setContextClassLoader"),
1254	+	// Permissions needed to change permissions!
1255	+	new SecurityPermission("getPolicy"),
1256	+	new SecurityPermission("setPolicy"),
1257	+	new RuntimePermission("setSecurityManager"),
1258	+	// Permissions needed by the junit test harness
1259	+	new RuntimePermission("accessDeclaredMembers"),
1260	+	new PropertyPermission("*", "read"),
1261	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1262	+	}
1263
1264	<	// Some convenient Runnable classes
1264	>	/**
1265	>	* Sleeps until the given time has elapsed.
1266	>	* Throws AssertionFailedError if interrupted.
1267	>	*/
1268	>	static void sleep(long millis) {
1269	>	try {
1270	>	delay(millis);
1271	>	} catch (InterruptedException fail) {
1272	>	AssertionFailedError afe =
1273	>	new AssertionFailedError("Unexpected InterruptedException");
1274	>	afe.initCause(fail);
1275	>	throw afe;
1276	>	}
1277	>	}
1278
1279	<	static class NoOpRunnable implements Runnable {
1280	<	public void run() {}
1279	>	/**
1280	>	* Spin-waits up to the specified number of milliseconds for the given
1281	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1282	>	*/
1283	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1284	>	long startTime = 0L;
1285	>	for (;;) {
1286	>	Thread.State s = thread.getState();
1287	>	if (s == Thread.State.BLOCKED ||
1288	>	s == Thread.State.WAITING ||
1289	>	s == Thread.State.TIMED_WAITING)
1290	>	return;
1291	>	else if (s == Thread.State.TERMINATED)
1292	>	fail("Unexpected thread termination");
1293	>	else if (startTime == 0L)
1294	>	startTime = System.nanoTime();
1295	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1296	>	threadAssertTrue(thread.isAlive());
1297	>	return;
1298	>	}
1299	>	Thread.yield();
1300	>	}
1301		}
1302
1303	<	static class NoOpCallable implements Callable {
1304	<	public Object call() { return Boolean.TRUE; }
1303	>	/**
1304	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1305	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1306	>	*/
1307	>	void waitForThreadToEnterWaitState(Thread thread) {
1308	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1309		}
1310
1311	<	static final String TEST_STRING = "a test string";
1311	>	/**
1312	>	* Returns the number of milliseconds since time given by
1313	>	* startNanoTime, which must have been previously returned from a
1314	>	* call to {@link System#nanoTime()}.
1315	>	*/
1316	>	static long millisElapsedSince(long startNanoTime) {
1317	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1318	>	}
1319
1320	<	static class StringTask implements Callable<String> {
1321	<	public String call() { return TEST_STRING; }
1320	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1321	>	//         long startTime = System.nanoTime();
1322	>	//         try {
1323	>	//             r.run();
1324	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1325	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1326	>	//             throw new AssertionFailedError("did not return promptly");
1327	>	//     }
1328	>
1329	>	//     void assertTerminatesPromptly(Runnable r) {
1330	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1331	>	//     }
1332	>
1333	>	/**
1334	>	* Checks that timed f.get() returns the expected value, and does not
1335	>	* wait for the timeout to elapse before returning.
1336	>	*/
1337	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1338	>	long startTime = System.nanoTime();
1339	>	try {
1340	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1341	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1342	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1343	>	throw new AssertionFailedError("timed get did not return promptly");
1344		}
1345
1346	<	static class NPETask implements Callable<String> {
1347	<	public String call() { throw new NullPointerException(); }
1346	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1347	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1348		}
1349
1350	<	static class CallableOne implements Callable<Integer> {
1351	<	public Integer call() { return one; }
1350	>	/**
1351	>	* Returns a new started daemon Thread running the given runnable.
1352	>	*/
1353	>	Thread newStartedThread(Runnable runnable) {
1354	>	Thread t = new Thread(runnable);
1355	>	t.setDaemon(true);
1356	>	t.start();
1357	>	return t;
1358		}
1359
1360	<	class ShortRunnable implements Runnable {
1361	<	public void run() {
1362	<	try {
1363	<	Thread.sleep(SHORT_DELAY_MS);
1364	<	}
1365	<	catch(Exception e) {
1366	<	threadUnexpectedException();
1360	>	/**
1361	>	* Waits for the specified time (in milliseconds) for the thread
1362	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1363	>	* the thread (in the hope that it may terminate later) and fails.
1364	>	*/
1365	>	void awaitTermination(Thread t, long timeoutMillis) {
1366	>	try {
1367	>	t.join(timeoutMillis);
1368	>	} catch (InterruptedException fail) {
1369	>	threadUnexpectedException(fail);
1370	>	} finally {
1371	>	if (t.getState() != Thread.State.TERMINATED) {
1372	>	t.interrupt();
1373	>	threadFail("timed out waiting for thread to terminate");
1374		}
1375		}
1376		}
1377
1378	<	class ShortInterruptedRunnable implements Runnable {
1379	<	public void run() {
1378	>	/**
1379	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1380	>	* terminate (using {@link Thread#join(long)}), else interrupts
1381	>	* the thread (in the hope that it may terminate later) and fails.
1382	>	*/
1383	>	void awaitTermination(Thread t) {
1384	>	awaitTermination(t, LONG_DELAY_MS);
1385	>	}
1386	>
1387	>	// Some convenient Runnable classes
1388	>
1389	>	public abstract class CheckedRunnable implements Runnable {
1390	>	protected abstract void realRun() throws Throwable;
1391	>
1392	>	public final void run() {
1393		try {
1394	<	Thread.sleep(SHORT_DELAY_MS);
1395	<	threadShouldThrow();
1396	<	}
412	<	catch(InterruptedException success) {
1394	>	realRun();
1395	>	} catch (Throwable fail) {
1396	>	threadUnexpectedException(fail);
1397		}
1398		}
1399		}
1400
1401	<	class SmallRunnable implements Runnable {
1402	<	public void run() {
1401	>	public abstract class RunnableShouldThrow implements Runnable {
1402	>	protected abstract void realRun() throws Throwable;
1403	>
1404	>	final Class<?> exceptionClass;
1405	>
1406	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1407	>	this.exceptionClass = exceptionClass;
1408	>	}
1409	>
1410	>	public final void run() {
1411		try {
1412	<	Thread.sleep(SMALL_DELAY_MS);
1413	<	}
1414	<	catch(Exception e) {
1415	<	threadUnexpectedException();
1412	>	realRun();
1413	>	threadShouldThrow(exceptionClass.getSimpleName());
1414	>	} catch (Throwable t) {
1415	>	if (! exceptionClass.isInstance(t))
1416	>	threadUnexpectedException(t);
1417		}
1418		}
1419		}
1420
1421	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1422	<	public void run() {
1421	>	public abstract class ThreadShouldThrow extends Thread {
1422	>	protected abstract void realRun() throws Throwable;
1423	>
1424	>	final Class<?> exceptionClass;
1425	>
1426	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1427	>	this.exceptionClass = exceptionClass;
1428	>	}
1429	>
1430	>	public final void run() {
1431		try {
1432	<	Thread.sleep(SMALL_DELAY_MS);
1433	<	}
1434	<	catch(Exception e) {
1432	>	realRun();
1433	>	threadShouldThrow(exceptionClass.getSimpleName());
1434	>	} catch (Throwable t) {
1435	>	if (! exceptionClass.isInstance(t))
1436	>	threadUnexpectedException(t);
1437		}
1438		}
1439		}
1440
1441	<	class SmallCallable implements Callable {
1442	<	public Object call() {
1441	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1442	>	protected abstract void realRun() throws Throwable;
1443	>
1444	>	public final void run() {
1445		try {
1446	<	Thread.sleep(SMALL_DELAY_MS);
1447	<	}
1448	<	catch(Exception e) {
1449	<	threadUnexpectedException();
1446	>	realRun();
1447	>	threadShouldThrow("InterruptedException");
1448	>	} catch (InterruptedException success) {
1449	>	threadAssertFalse(Thread.interrupted());
1450	>	} catch (Throwable fail) {
1451	>	threadUnexpectedException(fail);
1452		}
446	–	return Boolean.TRUE;
1453		}
1454		}
1455
1456	<	class SmallInterruptedRunnable implements Runnable {
1457	<	public void run() {
1456	>	public abstract class CheckedCallable<T> implements Callable<T> {
1457	>	protected abstract T realCall() throws Throwable;
1458	>
1459	>	public final T call() {
1460		try {
1461	<	Thread.sleep(SMALL_DELAY_MS);
1462	<	threadShouldThrow();
1463	<	}
1464	<	catch(InterruptedException success) {
1461	>	return realCall();
1462	>	} catch (Throwable fail) {
1463	>	threadUnexpectedException(fail);
1464	>	return null;
1465		}
1466		}
1467		}
1468
1469	+	public abstract class CheckedInterruptedCallable<T>
1470	+	implements Callable<T> {
1471	+	protected abstract T realCall() throws Throwable;
1472
1473	<	class MediumRunnable implements Runnable {
463	<	public void run() {
1473	>	public final T call() {
1474		try {
1475	<	Thread.sleep(MEDIUM_DELAY_MS);
1476	<	}
1477	<	catch(Exception e) {
1478	<	threadUnexpectedException();
1475	>	T result = realCall();
1476	>	threadShouldThrow("InterruptedException");
1477	>	return result;
1478	>	} catch (InterruptedException success) {
1479	>	threadAssertFalse(Thread.interrupted());
1480	>	} catch (Throwable fail) {
1481	>	threadUnexpectedException(fail);
1482		}
1483	+	return null;
1484		}
1485		}
1486
1487	<	class MediumInterruptedRunnable implements Runnable {
1488	<	public void run() {
1487	>	public static class NoOpRunnable implements Runnable {
1488	>	public void run() {}
1489	>	}
1490	>
1491	>	public static class NoOpCallable implements Callable {
1492	>	public Object call() { return Boolean.TRUE; }
1493	>	}
1494	>
1495	>	public static final String TEST_STRING = "a test string";
1496	>
1497	>	public static class StringTask implements Callable<String> {
1498	>	final String value;
1499	>	public StringTask() { this(TEST_STRING); }
1500	>	public StringTask(String value) { this.value = value; }
1501	>	public String call() { return value; }
1502	>	}
1503	>
1504	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1505	>	return new CheckedCallable<String>() {
1506	>	protected String realCall() {
1507	>	try {
1508	>	latch.await();
1509	>	} catch (InterruptedException quittingTime) {}
1510	>	return TEST_STRING;
1511	>	}};
1512	>	}
1513	>
1514	>	public Runnable countDowner(final CountDownLatch latch) {
1515	>	return new CheckedRunnable() {
1516	>	public void realRun() throws InterruptedException {
1517	>	latch.countDown();
1518	>	}};
1519	>	}
1520	>
1521	>	class LatchAwaiter extends CheckedRunnable {
1522	>	static final int NEW = 0;
1523	>	static final int RUNNING = 1;
1524	>	static final int DONE = 2;
1525	>	final CountDownLatch latch;
1526	>	int state = NEW;
1527	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1528	>	public void realRun() throws InterruptedException {
1529	>	state = 1;
1530	>	await(latch);
1531	>	state = 2;
1532	>	}
1533	>	}
1534	>
1535	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1536	>	return new LatchAwaiter(latch);
1537	>	}
1538	>
1539	>	public void await(CountDownLatch latch, long timeoutMillis) {
1540	>	try {
1541	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1542	>	fail("timed out waiting for CountDownLatch for "
1543	>	+ (timeoutMillis/1000) + " sec");
1544	>	} catch (Throwable fail) {
1545	>	threadUnexpectedException(fail);
1546	>	}
1547	>	}
1548	>
1549	>	public void await(CountDownLatch latch) {
1550	>	await(latch, LONG_DELAY_MS);
1551	>	}
1552	>
1553	>	public void await(Semaphore semaphore) {
1554	>	try {
1555	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1556	>	fail("timed out waiting for Semaphore for "
1557	>	+ (LONG_DELAY_MS/1000) + " sec");
1558	>	} catch (Throwable fail) {
1559	>	threadUnexpectedException(fail);
1560	>	}
1561	>	}
1562	>
1563	>	//     /**
1564	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1565	>	//      */
1566	>	//     public void await(AtomicBoolean flag) {
1567	>	//         await(flag, LONG_DELAY_MS);
1568	>	//     }
1569	>
1570	>	//     /**
1571	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1572	>	//      */
1573	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1574	>	//         long startTime = System.nanoTime();
1575	>	//         while (!flag.get()) {
1576	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1577	>	//                 throw new AssertionFailedError("timed out");
1578	>	//             Thread.yield();
1579	>	//         }
1580	>	//     }
1581	>
1582	>	public static class NPETask implements Callable<String> {
1583	>	public String call() { throw new NullPointerException(); }
1584	>	}
1585	>
1586	>	public static class CallableOne implements Callable<Integer> {
1587	>	public Integer call() { return one; }
1588	>	}
1589	>
1590	>	public class ShortRunnable extends CheckedRunnable {
1591	>	protected void realRun() throws Throwable {
1592	>	delay(SHORT_DELAY_MS);
1593	>	}
1594	>	}
1595	>
1596	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1597	>	protected void realRun() throws InterruptedException {
1598	>	delay(SHORT_DELAY_MS);
1599	>	}
1600	>	}
1601	>
1602	>	public class SmallRunnable extends CheckedRunnable {
1603	>	protected void realRun() throws Throwable {
1604	>	delay(SMALL_DELAY_MS);
1605	>	}
1606	>	}
1607	>
1608	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1609	>	protected void realRun() {
1610		try {
1611	<	Thread.sleep(MEDIUM_DELAY_MS);
1612	<	threadShouldThrow();
478	<	}
479	<	catch(InterruptedException success) {
480	<	}
1611	>	delay(SMALL_DELAY_MS);
1612	>	} catch (InterruptedException ok) {}
1613		}
1614		}
1615
1616	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1617	<	public void run() {
1616	>	public class SmallCallable extends CheckedCallable {
1617	>	protected Object realCall() throws InterruptedException {
1618	>	delay(SMALL_DELAY_MS);
1619	>	return Boolean.TRUE;
1620	>	}
1621	>	}
1622	>
1623	>	public class MediumRunnable extends CheckedRunnable {
1624	>	protected void realRun() throws Throwable {
1625	>	delay(MEDIUM_DELAY_MS);
1626	>	}
1627	>	}
1628	>
1629	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1630	>	protected void realRun() throws InterruptedException {
1631	>	delay(MEDIUM_DELAY_MS);
1632	>	}
1633	>	}
1634	>
1635	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1636	>	return new CheckedRunnable() {
1637	>	protected void realRun() {
1638	>	try {
1639	>	delay(timeoutMillis);
1640	>	} catch (InterruptedException ok) {}
1641	>	}};
1642	>	}
1643	>
1644	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1645	>	protected void realRun() {
1646		try {
1647	<	Thread.sleep(MEDIUM_DELAY_MS);
1648	<	}
489	<	catch(InterruptedException success) {
490	<	}
1647	>	delay(MEDIUM_DELAY_MS);
1648	>	} catch (InterruptedException ok) {}
1649		}
1650		}
1651
1652	<	class LongPossiblyInterruptedRunnable implements Runnable {
1653	<	public void run() {
1652	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1653	>	protected void realRun() {
1654		try {
1655	<	Thread.sleep(LONG_DELAY_MS);
1656	<	}
499	<	catch(InterruptedException success) {
500	<	}
1655	>	delay(LONG_DELAY_MS);
1656	>	} catch (InterruptedException ok) {}
1657		}
1658		}
1659
1660		/**
1661		* For use as ThreadFactory in constructors
1662		*/
1663	<	static class SimpleThreadFactory implements ThreadFactory{
1664	<	public Thread newThread(Runnable r){
1663	>	public static class SimpleThreadFactory implements ThreadFactory {
1664	>	public Thread newThread(Runnable r) {
1665		return new Thread(r);
1666	<	}
1666	>	}
1667	>	}
1668	>
1669	>	public interface TrackedRunnable extends Runnable {
1670	>	boolean isDone();
1671	>	}
1672	>
1673	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1674	>	return new TrackedRunnable() {
1675	>	private volatile boolean done = false;
1676	>	public boolean isDone() { return done; }
1677	>	public void run() {
1678	>	try {
1679	>	delay(timeoutMillis);
1680	>	done = true;
1681	>	} catch (InterruptedException ok) {}
1682	>	}
1683	>	};
1684		}
1685
1686	<	static class TrackedShortRunnable implements Runnable {
1687	<	volatile boolean done = false;
1686	>	public static class TrackedShortRunnable implements Runnable {
1687	>	public volatile boolean done = false;
1688		public void run() {
1689		try {
1690	<	Thread.sleep(SMALL_DELAY_MS);
1690	>	delay(SHORT_DELAY_MS);
1691		done = true;
1692	<	} catch(Exception e){
520	<	}
1692	>	} catch (InterruptedException ok) {}
1693		}
1694		}
1695
1696	<	static class TrackedMediumRunnable implements Runnable {
1697	<	volatile boolean done = false;
1696	>	public static class TrackedSmallRunnable implements Runnable {
1697	>	public volatile boolean done = false;
1698		public void run() {
1699		try {
1700	<	Thread.sleep(MEDIUM_DELAY_MS);
1700	>	delay(SMALL_DELAY_MS);
1701		done = true;
1702	<	} catch(Exception e){
531	<	}
1702	>	} catch (InterruptedException ok) {}
1703		}
1704		}
1705
1706	<	static class TrackedLongRunnable implements Runnable {
1707	<	volatile boolean done = false;
1706	>	public static class TrackedMediumRunnable implements Runnable {
1707	>	public volatile boolean done = false;
1708		public void run() {
1709		try {
1710	<	Thread.sleep(LONG_DELAY_MS);
1710	>	delay(MEDIUM_DELAY_MS);
1711		done = true;
1712	<	} catch(Exception e){
542	<	}
1712	>	} catch (InterruptedException ok) {}
1713		}
1714		}
1715
1716	<	static class TrackedNoOpRunnable implements Runnable {
1717	<	volatile boolean done = false;
1716	>	public static class TrackedLongRunnable implements Runnable {
1717	>	public volatile boolean done = false;
1718	>	public void run() {
1719	>	try {
1720	>	delay(LONG_DELAY_MS);
1721	>	done = true;
1722	>	} catch (InterruptedException ok) {}
1723	>	}
1724	>	}
1725	>
1726	>	public static class TrackedNoOpRunnable implements Runnable {
1727	>	public volatile boolean done = false;
1728		public void run() {
1729		done = true;
1730		}
1731		}
1732
1733	<	static class TrackedCallable implements Callable {
1734	<	volatile boolean done = false;
1733	>	public static class TrackedCallable implements Callable {
1734	>	public volatile boolean done = false;
1735		public Object call() {
1736		try {
1737	<	Thread.sleep(SMALL_DELAY_MS);
1737	>	delay(SMALL_DELAY_MS);
1738		done = true;
1739	<	} catch(Exception e){
560	<	}
1739	>	} catch (InterruptedException ok) {}
1740		return Boolean.TRUE;
1741		}
1742		}
1743
1744	+	/**
1745	+	* Analog of CheckedRunnable for RecursiveAction
1746	+	*/
1747	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1748	+	protected abstract void realCompute() throws Throwable;
1749	+
1750	+	@Override protected final void compute() {
1751	+	try {
1752	+	realCompute();
1753	+	} catch (Throwable fail) {
1754	+	threadUnexpectedException(fail);
1755	+	}
1756	+	}
1757	+	}
1758	+
1759	+	/**
1760	+	* Analog of CheckedCallable for RecursiveTask
1761	+	*/
1762	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1763	+	protected abstract T realCompute() throws Throwable;
1764	+
1765	+	@Override protected final T compute() {
1766	+	try {
1767	+	return realCompute();
1768	+	} catch (Throwable fail) {
1769	+	threadUnexpectedException(fail);
1770	+	return null;
1771	+	}
1772	+	}
1773	+	}
1774
1775		/**
1776		* For use as RejectedExecutionHandler in constructors
1777		*/
1778	<	static class NoOpREHandler implements RejectedExecutionHandler{
1779	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1778	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1779	>	public void rejectedExecution(Runnable r,
1780	>	ThreadPoolExecutor executor) {}
1781	>	}
1782	>
1783	>	/**
1784	>	* A CyclicBarrier that uses timed await and fails with
1785	>	* AssertionFailedErrors instead of throwing checked exceptions.
1786	>	*/
1787	>	public static class CheckedBarrier extends CyclicBarrier {
1788	>	public CheckedBarrier(int parties) { super(parties); }
1789	>
1790	>	public int await() {
1791	>	try {
1792	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1793	>	} catch (TimeoutException timedOut) {
1794	>	throw new AssertionFailedError("timed out");
1795	>	} catch (Exception fail) {
1796	>	AssertionFailedError afe =
1797	>	new AssertionFailedError("Unexpected exception: " + fail);
1798	>	afe.initCause(fail);
1799	>	throw afe;
1800	>	}
1801	>	}
1802	>	}
1803	>
1804	>	void checkEmpty(BlockingQueue q) {
1805	>	try {
1806	>	assertTrue(q.isEmpty());
1807	>	assertEquals(0, q.size());
1808	>	assertNull(q.peek());
1809	>	assertNull(q.poll());
1810	>	assertNull(q.poll(0, MILLISECONDS));
1811	>	assertEquals(q.toString(), "[]");
1812	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1813	>	assertFalse(q.iterator().hasNext());
1814	>	try {
1815	>	q.element();
1816	>	shouldThrow();
1817	>	} catch (NoSuchElementException success) {}
1818	>	try {
1819	>	q.iterator().next();
1820	>	shouldThrow();
1821	>	} catch (NoSuchElementException success) {}
1822	>	try {
1823	>	q.remove();
1824	>	shouldThrow();
1825	>	} catch (NoSuchElementException success) {}
1826	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1827	>	}
1828	>
1829	>	void assertSerialEquals(Object x, Object y) {
1830	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1831	>	}
1832	>
1833	>	void assertNotSerialEquals(Object x, Object y) {
1834	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1835	>	}
1836	>
1837	>	byte[] serialBytes(Object o) {
1838	>	try {
1839	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1840	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1841	>	oos.writeObject(o);
1842	>	oos.flush();
1843	>	oos.close();
1844	>	return bos.toByteArray();
1845	>	} catch (Throwable fail) {
1846	>	threadUnexpectedException(fail);
1847	>	return new byte[0];
1848	>	}
1849	>	}
1850	>
1851	>	void assertImmutable(final Object o) {
1852	>	if (o instanceof Collection) {
1853	>	assertThrows(
1854	>	UnsupportedOperationException.class,
1855	>	new Runnable() { public void run() {
1856	>	((Collection) o).add(null);}});
1857	>	}
1858	>	}
1859	>
1860	>	@SuppressWarnings("unchecked")
1861	>	<T> T serialClone(T o) {
1862	>	try {
1863	>	ObjectInputStream ois = new ObjectInputStream
1864	>	(new ByteArrayInputStream(serialBytes(o)));
1865	>	T clone = (T) ois.readObject();
1866	>	if (o == clone) assertImmutable(o);
1867	>	assertSame(o.getClass(), clone.getClass());
1868	>	return clone;
1869	>	} catch (Throwable fail) {
1870	>	threadUnexpectedException(fail);
1871	>	return null;
1872	>	}
1873	>	}
1874	>
1875	>	/**
1876	>	* A version of serialClone that leaves error handling (for
1877	>	* e.g. NotSerializableException) up to the caller.
1878	>	*/
1879	>	@SuppressWarnings("unchecked")
1880	>	<T> T serialClonePossiblyFailing(T o)
1881	>	throws ReflectiveOperationException, java.io.IOException {
1882	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1883	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1884	>	oos.writeObject(o);
1885	>	oos.flush();
1886	>	oos.close();
1887	>	ObjectInputStream ois = new ObjectInputStream
1888	>	(new ByteArrayInputStream(bos.toByteArray()));
1889	>	T clone = (T) ois.readObject();
1890	>	if (o == clone) assertImmutable(o);
1891	>	assertSame(o.getClass(), clone.getClass());
1892	>	return clone;
1893	>	}
1894	>
1895	>	/**
1896	>	* If o implements Cloneable and has a public clone method,
1897	>	* returns a clone of o, else null.
1898	>	*/
1899	>	@SuppressWarnings("unchecked")
1900	>	<T> T cloneableClone(T o) {
1901	>	if (!(o instanceof Cloneable)) return null;
1902	>	final T clone;
1903	>	try {
1904	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1905	>	} catch (NoSuchMethodException ok) {
1906	>	return null;
1907	>	} catch (ReflectiveOperationException unexpected) {
1908	>	throw new Error(unexpected);
1909	>	}
1910	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1911	>	assertSame(o.getClass(), clone.getClass());
1912	>	return clone;
1913	>	}
1914	>
1915	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1916	>	Runnable... throwingActions) {
1917	>	for (Runnable throwingAction : throwingActions) {
1918	>	boolean threw = false;
1919	>	try { throwingAction.run(); }
1920	>	catch (Throwable t) {
1921	>	threw = true;
1922	>	if (!expectedExceptionClass.isInstance(t)) {
1923	>	AssertionFailedError afe =
1924	>	new AssertionFailedError
1925	>	("Expected " + expectedExceptionClass.getName() +
1926	>	", got " + t.getClass().getName());
1927	>	afe.initCause(t);
1928	>	threadUnexpectedException(afe);
1929	>	}
1930	>	}
1931	>	if (!threw)
1932	>	shouldThrow(expectedExceptionClass.getName());
1933	>	}
1934	>	}
1935	>
1936	>	public void assertIteratorExhausted(Iterator<?> it) {
1937	>	try {
1938	>	it.next();
1939	>	shouldThrow();
1940	>	} catch (NoSuchElementException success) {}
1941	>	assertFalse(it.hasNext());
1942	>	}
1943	>
1944	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1945	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1946	>	}
1947	>
1948	>	public Runnable runnableThrowing(final RuntimeException ex) {
1949	>	return new Runnable() { public void run() { throw ex; }};
1950	>	}
1951	>
1952	>	/** A reusable thread pool to be shared by tests. */
1953	>	static final ExecutorService cachedThreadPool =
1954	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1955	>	1000L, MILLISECONDS,
1956	>	new SynchronousQueue<Runnable>());
1957	>
1958	>	static <T> void shuffle(T[] array) {
1959	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1960		}
572	–
573	–
1961		}

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