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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.52 by jsr166, Mon Sep 13 23:19:31 2010 UTC vs.
Revision 1.233 by jsr166, Sat Jul 15 23:15:21 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
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5	>	* http://creativecommons.org/publicdomain/zero/1.0/
6		* Other contributors include Andrew Wright, Jeffrey Hayes,
7		* Pat Fisher, Mike Judd.
8		*/
9
10	<	import junit.framework.*;
11	<	import java.util.*;
12	<	import java.util.concurrent.*;
10	>	/*
11	>	* @test
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15	>	* @build *
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41	>	*/
42	>
43		import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	<	import java.io.*;
45	<	import java.security.*;
44	>	import static java.util.concurrent.TimeUnit.MINUTES;
45	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
46	>
47	>	import java.io.ByteArrayInputStream;
48	>	import java.io.ByteArrayOutputStream;
49	>	import java.io.ObjectInputStream;
50	>	import java.io.ObjectOutputStream;
51	>	import java.lang.management.ManagementFactory;
52	>	import java.lang.management.ThreadInfo;
53	>	import java.lang.management.ThreadMXBean;
54	>	import java.lang.reflect.Constructor;
55	>	import java.lang.reflect.Method;
56	>	import java.lang.reflect.Modifier;
57	>	import java.security.CodeSource;
58	>	import java.security.Permission;
59	>	import java.security.PermissionCollection;
60	>	import java.security.Permissions;
61	>	import java.security.Policy;
62	>	import java.security.ProtectionDomain;
63	>	import java.security.SecurityPermission;
64	>	import java.util.ArrayList;
65	>	import java.util.Arrays;
66	>	import java.util.Collection;
67	>	import java.util.Collections;
68	>	import java.util.Date;
69	>	import java.util.Enumeration;
70	>	import java.util.Iterator;
71	>	import java.util.List;
72	>	import java.util.NoSuchElementException;
73	>	import java.util.PropertyPermission;
74	>	import java.util.concurrent.BlockingQueue;
75	>	import java.util.concurrent.Callable;
76	>	import java.util.concurrent.CountDownLatch;
77	>	import java.util.concurrent.CyclicBarrier;
78	>	import java.util.concurrent.ExecutionException;
79	>	import java.util.concurrent.Executors;
80	>	import java.util.concurrent.ExecutorService;
81	>	import java.util.concurrent.ForkJoinPool;
82	>	import java.util.concurrent.Future;
83	>	import java.util.concurrent.RecursiveAction;
84	>	import java.util.concurrent.RecursiveTask;
85	>	import java.util.concurrent.RejectedExecutionHandler;
86	>	import java.util.concurrent.Semaphore;
87	>	import java.util.concurrent.SynchronousQueue;
88	>	import java.util.concurrent.ThreadFactory;
89	>	import java.util.concurrent.ThreadLocalRandom;
90	>	import java.util.concurrent.ThreadPoolExecutor;
91	>	import java.util.concurrent.TimeUnit;
92	>	import java.util.concurrent.TimeoutException;
93	>	import java.util.concurrent.atomic.AtomicBoolean;
94	>	import java.util.concurrent.atomic.AtomicReference;
95	>	import java.util.regex.Pattern;
96	>
97	>	import junit.framework.AssertionFailedError;
98	>	import junit.framework.Test;
99	>	import junit.framework.TestCase;
100	>	import junit.framework.TestResult;
101	>	import junit.framework.TestSuite;
102
103		/**
104		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 23 | Line 110 | import java.security.*;
110		*
111		* <ol>
112		*
113	<	* <li> All assertions in code running in generated threads must use
113	>	* <li>All assertions in code running in generated threads must use
114		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
115		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
116		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
117		* particularly recommended) for other code to use these forms too.
118		* Only the most typically used JUnit assertion methods are defined
119	<	* this way, but enough to live with.</li>
119	>	* this way, but enough to live with.
120		*
121	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
121	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
122		* to invoke {@code super.setUp} and {@code super.tearDown} within
123		* them. These methods are used to clear and check for thread
124	<	* assertion failures.</li>
124	>	* assertion failures.
125		*
126		* <li>All delays and timeouts must use one of the constants {@code
127		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 45 | Line 132 | import java.security.*;
132		* is always discriminable as larger than SHORT and smaller than
133		* MEDIUM.  And so on. These constants are set to conservative values,
134		* but even so, if there is ever any doubt, they can all be increased
135	<	* in one spot to rerun tests on slower platforms.</li>
135	>	* in one spot to rerun tests on slower platforms.
136		*
137	<	* <li> All threads generated must be joined inside each test case
137	>	* <li>All threads generated must be joined inside each test case
138		* method (or {@code fail} to do so) before returning from the
139		* method. The {@code joinPool} method can be used to do this when
140	<	* using Executors.</li>
140	>	* using Executors.
141		*
142		* </ol>
143		*
144	<	* <p> <b>Other notes</b>
144	>	* <p><b>Other notes</b>
145		* <ul>
146		*
147	<	* <li> Usually, there is one testcase method per JSR166 method
147	>	* <li>Usually, there is one testcase method per JSR166 method
148		* covering "normal" operation, and then as many exception-testing
149		* methods as there are exceptions the method can throw. Sometimes
150		* there are multiple tests per JSR166 method when the different
151		* "normal" behaviors differ significantly. And sometimes testcases
152	<	* cover multiple methods when they cannot be tested in
66	<	* isolation.</li>
152	>	* cover multiple methods when they cannot be tested in isolation.
153		*
154	<	* <li> The documentation style for testcases is to provide as javadoc
154	>	* <li>The documentation style for testcases is to provide as javadoc
155		* a simple sentence or two describing the property that the testcase
156		* method purports to test. The javadocs do not say anything about how
157	<	* the property is tested. To find out, read the code.</li>
157	>	* the property is tested. To find out, read the code.
158		*
159	<	* <li> These tests are "conformance tests", and do not attempt to
159	>	* <li>These tests are "conformance tests", and do not attempt to
160		* test throughput, latency, scalability or other performance factors
161		* (see the separate "jtreg" tests for a set intended to check these
162		* for the most central aspects of functionality.) So, most tests use
163		* the smallest sensible numbers of threads, collection sizes, etc
164	<	* needed to check basic conformance.</li>
164	>	* needed to check basic conformance.
165		*
166		* <li>The test classes currently do not declare inclusion in
167		* any particular package to simplify things for people integrating
168	<	* them in TCK test suites.</li>
168	>	* them in TCK test suites.
169		*
170	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
171	<	* runs all JSR166 unit tests.</li>
170	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
171	>	* runs all JSR166 unit tests.
172		*
173		* </ul>
174		*/
#	Line 90 | Line 176 | public class JSR166TestCase extends Test
176		private static final boolean useSecurityManager =
177		Boolean.getBoolean("jsr166.useSecurityManager");
178
179	+	protected static final boolean expensiveTests =
180	+	Boolean.getBoolean("jsr166.expensiveTests");
181	+
182	+	/**
183	+	* If true, also run tests that are not part of the official tck
184	+	* because they test unspecified implementation details.
185	+	*/
186	+	protected static final boolean testImplementationDetails =
187	+	Boolean.getBoolean("jsr166.testImplementationDetails");
188	+
189	+	/**
190	+	* If true, report on stdout all "slow" tests, that is, ones that
191	+	* take more than profileThreshold milliseconds to execute.
192	+	*/
193	+	private static final boolean profileTests =
194	+	Boolean.getBoolean("jsr166.profileTests");
195	+
196	+	/**
197	+	* The number of milliseconds that tests are permitted for
198	+	* execution without being reported, when profileTests is set.
199	+	*/
200	+	private static final long profileThreshold =
201	+	Long.getLong("jsr166.profileThreshold", 100);
202	+
203	+	/**
204	+	* The number of repetitions per test (for tickling rare bugs).
205	+	*/
206	+	private static final int runsPerTest =
207	+	Integer.getInteger("jsr166.runsPerTest", 1);
208	+
209	+	/**
210	+	* The number of repetitions of the test suite (for finding leaks?).
211	+	*/
212	+	private static final int suiteRuns =
213	+	Integer.getInteger("jsr166.suiteRuns", 1);
214	+
215	+	/**
216	+	* Returns the value of the system property, or NaN if not defined.
217	+	*/
218	+	private static float systemPropertyValue(String name) {
219	+	String floatString = System.getProperty(name);
220	+	if (floatString == null)
221	+	return Float.NaN;
222	+	try {
223	+	return Float.parseFloat(floatString);
224	+	} catch (NumberFormatException ex) {
225	+	throw new IllegalArgumentException(
226	+	String.format("Bad float value in system property %s=%s",
227	+	name, floatString));
228	+	}
229	+	}
230	+
231	+	/**
232	+	* The scaling factor to apply to standard delays used in tests.
233	+	* May be initialized from any of:
234	+	* - the "jsr166.delay.factor" system property
235	+	* - the "test.timeout.factor" system property (as used by jtreg)
236	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
237	+	* - hard-coded fuzz factor when using a known slowpoke VM
238	+	*/
239	+	private static final float delayFactor = delayFactor();
240	+
241	+	private static float delayFactor() {
242	+	float x;
243	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
244	+	return x;
245	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
246	+	return x;
247	+	String prop = System.getProperty("java.vm.version");
248	+	if (prop != null && prop.matches(".*debug.*"))
249	+	return 4.0f; // How much slower is fastdebug than product?!
250	+	return 1.0f;
251	+	}
252	+
253	+	public JSR166TestCase() { super(); }
254	+	public JSR166TestCase(String name) { super(name); }
255	+
256	+	/**
257	+	* A filter for tests to run, matching strings of the form
258	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
259	+	* Usefully combined with jsr166.runsPerTest.
260	+	*/
261	+	private static final Pattern methodFilter = methodFilter();
262	+
263	+	private static Pattern methodFilter() {
264	+	String regex = System.getProperty("jsr166.methodFilter");
265	+	return (regex == null) ? null : Pattern.compile(regex);
266	+	}
267	+
268	+	// Instrumentation to debug very rare, but very annoying hung test runs.
269	+	static volatile TestCase currentTestCase;
270	+	// static volatile int currentRun = 0;
271	+	static {
272	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
273	+	// Avoid spurious reports with enormous runsPerTest.
274	+	// A single test case run should never take more than 1 second.
275	+	// But let's cap it at the high end too ...
276	+	final int timeoutMinutes =
277	+	Math.min(15, Math.max(runsPerTest / 60, 1));
278	+	for (TestCase lastTestCase = currentTestCase;;) {
279	+	try { MINUTES.sleep(timeoutMinutes); }
280	+	catch (InterruptedException unexpected) { break; }
281	+	if (lastTestCase == currentTestCase) {
282	+	System.err.printf(
283	+	"Looks like we're stuck running test: %s%n",
284	+	lastTestCase);
285	+	//                     System.err.printf(
286	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
287	+	//                         lastTestCase, currentRun, runsPerTest);
288	+	//                     System.err.println("availableProcessors=" +
289	+	//                         Runtime.getRuntime().availableProcessors());
290	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
291	+	dumpTestThreads();
292	+	// one stack dump is probably enough; more would be spam
293	+	break;
294	+	}
295	+	lastTestCase = currentTestCase;
296	+	}}};
297	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
298	+	thread.setDaemon(true);
299	+	thread.start();
300	+	}
301	+
302	+	//     public static String cpuModel() {
303	+	//         try {
304	+	//             java.util.regex.Matcher matcher
305	+	//               = Pattern.compile("model name\\s*: (.*)")
306	+	//                 .matcher(new String(
307	+	//                     java.nio.file.Files.readAllBytes(
308	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
309	+	//             matcher.find();
310	+	//             return matcher.group(1);
311	+	//         } catch (Exception ex) { return null; }
312	+	//     }
313	+
314	+	public void runBare() throws Throwable {
315	+	currentTestCase = this;
316	+	if (methodFilter == null
317	+	|| methodFilter.matcher(toString()).find())
318	+	super.runBare();
319	+	}
320	+
321	+	protected void runTest() throws Throwable {
322	+	for (int i = 0; i < runsPerTest; i++) {
323	+	// currentRun = i;
324	+	if (profileTests)
325	+	runTestProfiled();
326	+	else
327	+	super.runTest();
328	+	}
329	+	}
330	+
331	+	protected void runTestProfiled() throws Throwable {
332	+	for (int i = 0; i < 2; i++) {
333	+	long startTime = System.nanoTime();
334	+	super.runTest();
335	+	long elapsedMillis = millisElapsedSince(startTime);
336	+	if (elapsedMillis < profileThreshold)
337	+	break;
338	+	// Never report first run of any test; treat it as a
339	+	// warmup run, notably to trigger all needed classloading,
340	+	if (i > 0)
341	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
342	+	}
343	+	}
344	+
345		/**
346	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
346	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
347		*/
348		public static void main(String[] args) {
349	+	main(suite(), args);
350	+	}
351	+
352	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
353	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
354	+	long runTime;
355	+	public void startTest(Test test) {}
356	+	protected void printHeader(long runTime) {
357	+	this.runTime = runTime; // defer printing for later
358	+	}
359	+	protected void printFooter(TestResult result) {
360	+	if (result.wasSuccessful()) {
361	+	getWriter().println("OK (" + result.runCount() + " tests)"
362	+	+ "  Time: " + elapsedTimeAsString(runTime));
363	+	} else {
364	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
365	+	super.printFooter(result);
366	+	}
367	+	}
368	+	}
369	+
370	+	/**
371	+	* Returns a TestRunner that doesn't bother with unnecessary
372	+	* fluff, like printing a "." for each test case.
373	+	*/
374	+	static junit.textui.TestRunner newPithyTestRunner() {
375	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
376	+	runner.setPrinter(new PithyResultPrinter(System.out));
377	+	return runner;
378	+	}
379	+
380	+	/**
381	+	* Runs all unit tests in the given test suite.
382	+	* Actual behavior influenced by jsr166.* system properties.
383	+	*/
384	+	static void main(Test suite, String[] args) {
385		if (useSecurityManager) {
386		System.err.println("Setting a permissive security manager");
387		Policy.setPolicy(permissivePolicy());
388		System.setSecurityManager(new SecurityManager());
389		}
390	<	int iters = 1;
391	<	if (args.length > 0)
392	<	iters = Integer.parseInt(args[0]);
393	<	Test s = suite();
106	<	for (int i = 0; i < iters; ++i) {
107	<	junit.textui.TestRunner.run(s);
390	>	for (int i = 0; i < suiteRuns; i++) {
391	>	TestResult result = newPithyTestRunner().doRun(suite);
392	>	if (!result.wasSuccessful())
393	>	System.exit(1);
394		System.gc();
395		System.runFinalization();
396		}
397	<	System.exit(0);
397	>	}
398	>
399	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
400	>	TestSuite suite = new TestSuite();
401	>	for (Object suiteOrClass : suiteOrClasses) {
402	>	if (suiteOrClass instanceof TestSuite)
403	>	suite.addTest((TestSuite) suiteOrClass);
404	>	else if (suiteOrClass instanceof Class)
405	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
406	>	else
407	>	throw new ClassCastException("not a test suite or class");
408	>	}
409	>	return suite;
410	>	}
411	>
412	>	public static void addNamedTestClasses(TestSuite suite,
413	>	String... testClassNames) {
414	>	for (String testClassName : testClassNames) {
415	>	try {
416	>	Class<?> testClass = Class.forName(testClassName);
417	>	Method m = testClass.getDeclaredMethod("suite",
418	>	new Class<?>[0]);
419	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
420	>	} catch (Exception e) {
421	>	throw new Error("Missing test class", e);
422	>	}
423	>	}
424	>	}
425	>
426	>	public static final double JAVA_CLASS_VERSION;
427	>	public static final String JAVA_SPECIFICATION_VERSION;
428	>	static {
429	>	try {
430	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
431	>	new java.security.PrivilegedAction<Double>() {
432	>	public Double run() {
433	>	return Double.valueOf(System.getProperty("java.class.version"));}});
434	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
435	>	new java.security.PrivilegedAction<String>() {
436	>	public String run() {
437	>	return System.getProperty("java.specification.version");}});
438	>	} catch (Throwable t) {
439	>	throw new Error(t);
440	>	}
441	>	}
442	>
443	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
444	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
445	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
446	>	public static boolean atLeastJava9() {
447	>	return JAVA_CLASS_VERSION >= 53.0
448	>	// As of 2015-09, java9 still uses 52.0 class file version
449	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
450	>	}
451	>	public static boolean atLeastJava10() {
452	>	return JAVA_CLASS_VERSION >= 54.0
453	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
454		}
455
456		/**
457	<	* Collects all JSR166 unit tests as one suite
457	>	* Collects all JSR166 unit tests as one suite.
458		*/
459		public static Test suite() {
460	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
461	<
462	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
463	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
464	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
465	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
466	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
467	<	suite.addTest(new TestSuite(PhaserTest.class));
468	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
469	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
470	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
471	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
472	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
473	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
474	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
475	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
476	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
477	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
478	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
479	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
480	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
481	<	suite.addTest(new TestSuite(AtomicLongTest.class));
482	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
483	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
484	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
485	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
486	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
487	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
488	<	suite.addTest(new TestSuite(ConcurrentLinkedDequeTest.class));
489	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
490	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
491	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
492	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
493	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
494	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
495	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
496	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
497	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
498	<	suite.addTest(new TestSuite(DelayQueueTest.class));
499	<	suite.addTest(new TestSuite(EntryTest.class));
500	<	suite.addTest(new TestSuite(ExchangerTest.class));
501	<	suite.addTest(new TestSuite(ExecutorsTest.class));
502	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
503	<	suite.addTest(new TestSuite(FutureTaskTest.class));
504	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
505	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
506	<	suite.addTest(new TestSuite(LinkedListTest.class));
507	<	suite.addTest(new TestSuite(LockSupportTest.class));
508	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
509	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
510	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
511	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
512	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
513	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
514	<	suite.addTest(new TestSuite(SemaphoreTest.class));
515	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
516	<	suite.addTest(new TestSuite(SystemTest.class));
517	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
518	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
519	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
520	<	suite.addTest(new TestSuite(ThreadTest.class));
521	<	suite.addTest(new TestSuite(TimeUnitTest.class));
522	<	suite.addTest(new TestSuite(TreeMapTest.class));
523	<	suite.addTest(new TestSuite(TreeSetTest.class));
524	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
525	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
460	>	// Java7+ test classes
461	>	TestSuite suite = newTestSuite(
462	>	ForkJoinPoolTest.suite(),
463	>	ForkJoinTaskTest.suite(),
464	>	RecursiveActionTest.suite(),
465	>	RecursiveTaskTest.suite(),
466	>	LinkedTransferQueueTest.suite(),
467	>	PhaserTest.suite(),
468	>	ThreadLocalRandomTest.suite(),
469	>	AbstractExecutorServiceTest.suite(),
470	>	AbstractQueueTest.suite(),
471	>	AbstractQueuedSynchronizerTest.suite(),
472	>	AbstractQueuedLongSynchronizerTest.suite(),
473	>	ArrayBlockingQueueTest.suite(),
474	>	ArrayDequeTest.suite(),
475	>	ArrayListTest.suite(),
476	>	AtomicBooleanTest.suite(),
477	>	AtomicIntegerArrayTest.suite(),
478	>	AtomicIntegerFieldUpdaterTest.suite(),
479	>	AtomicIntegerTest.suite(),
480	>	AtomicLongArrayTest.suite(),
481	>	AtomicLongFieldUpdaterTest.suite(),
482	>	AtomicLongTest.suite(),
483	>	AtomicMarkableReferenceTest.suite(),
484	>	AtomicReferenceArrayTest.suite(),
485	>	AtomicReferenceFieldUpdaterTest.suite(),
486	>	AtomicReferenceTest.suite(),
487	>	AtomicStampedReferenceTest.suite(),
488	>	ConcurrentHashMapTest.suite(),
489	>	ConcurrentLinkedDequeTest.suite(),
490	>	ConcurrentLinkedQueueTest.suite(),
491	>	ConcurrentSkipListMapTest.suite(),
492	>	ConcurrentSkipListSubMapTest.suite(),
493	>	ConcurrentSkipListSetTest.suite(),
494	>	ConcurrentSkipListSubSetTest.suite(),
495	>	CopyOnWriteArrayListTest.suite(),
496	>	CopyOnWriteArraySetTest.suite(),
497	>	CountDownLatchTest.suite(),
498	>	CountedCompleterTest.suite(),
499	>	CyclicBarrierTest.suite(),
500	>	DelayQueueTest.suite(),
501	>	EntryTest.suite(),
502	>	ExchangerTest.suite(),
503	>	ExecutorsTest.suite(),
504	>	ExecutorCompletionServiceTest.suite(),
505	>	FutureTaskTest.suite(),
506	>	LinkedBlockingDequeTest.suite(),
507	>	LinkedBlockingQueueTest.suite(),
508	>	LinkedListTest.suite(),
509	>	LockSupportTest.suite(),
510	>	PriorityBlockingQueueTest.suite(),
511	>	PriorityQueueTest.suite(),
512	>	ReentrantLockTest.suite(),
513	>	ReentrantReadWriteLockTest.suite(),
514	>	ScheduledExecutorTest.suite(),
515	>	ScheduledExecutorSubclassTest.suite(),
516	>	SemaphoreTest.suite(),
517	>	SynchronousQueueTest.suite(),
518	>	SystemTest.suite(),
519	>	ThreadLocalTest.suite(),
520	>	ThreadPoolExecutorTest.suite(),
521	>	ThreadPoolExecutorSubclassTest.suite(),
522	>	ThreadTest.suite(),
523	>	TimeUnitTest.suite(),
524	>	TreeMapTest.suite(),
525	>	TreeSetTest.suite(),
526	>	TreeSubMapTest.suite(),
527	>	TreeSubSetTest.suite(),
528	>	VectorTest.suite());
529	>
530	>	// Java8+ test classes
531	>	if (atLeastJava8()) {
532	>	String[] java8TestClassNames = {
533	>	"ArrayDeque8Test",
534	>	"Atomic8Test",
535	>	"CompletableFutureTest",
536	>	"ConcurrentHashMap8Test",
537	>	"CountedCompleter8Test",
538	>	"DoubleAccumulatorTest",
539	>	"DoubleAdderTest",
540	>	"ForkJoinPool8Test",
541	>	"ForkJoinTask8Test",
542	>	"LinkedBlockingDeque8Test",
543	>	"LinkedBlockingQueue8Test",
544	>	"LongAccumulatorTest",
545	>	"LongAdderTest",
546	>	"SplittableRandomTest",
547	>	"StampedLockTest",
548	>	"SubmissionPublisherTest",
549	>	"ThreadLocalRandom8Test",
550	>	"TimeUnit8Test",
551	>	};
552	>	addNamedTestClasses(suite, java8TestClassNames);
553	>	}
554	>
555	>	// Java9+ test classes
556	>	if (atLeastJava9()) {
557	>	String[] java9TestClassNames = {
558	>	"AtomicBoolean9Test",
559	>	"AtomicInteger9Test",
560	>	"AtomicIntegerArray9Test",
561	>	"AtomicLong9Test",
562	>	"AtomicLongArray9Test",
563	>	"AtomicReference9Test",
564	>	"AtomicReferenceArray9Test",
565	>	"ExecutorCompletionService9Test",
566	>	"ForkJoinPool9Test",
567	>	};
568	>	addNamedTestClasses(suite, java9TestClassNames);
569	>	}
570
571		return suite;
572		}
573
574	+	/** Returns list of junit-style test method names in given class. */
575	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
576	+	Method[] methods = testClass.getDeclaredMethods();
577	+	ArrayList<String> names = new ArrayList<>(methods.length);
578	+	for (Method method : methods) {
579	+	if (method.getName().startsWith("test")
580	+	&& Modifier.isPublic(method.getModifiers())
581	+	// method.getParameterCount() requires jdk8+
582	+	&& method.getParameterTypes().length == 0) {
583	+	names.add(method.getName());
584	+	}
585	+	}
586	+	return names;
587	+	}
588	+
589	+	/**
590	+	* Returns junit-style testSuite for the given test class, but
591	+	* parameterized by passing extra data to each test.
592	+	*/
593	+	public static <ExtraData> Test parameterizedTestSuite
594	+	(Class<? extends JSR166TestCase> testClass,
595	+	Class<ExtraData> dataClass,
596	+	ExtraData data) {
597	+	try {
598	+	TestSuite suite = new TestSuite();
599	+	Constructor c =
600	+	testClass.getDeclaredConstructor(dataClass, String.class);
601	+	for (String methodName : testMethodNames(testClass))
602	+	suite.addTest((Test) c.newInstance(data, methodName));
603	+	return suite;
604	+	} catch (Exception e) {
605	+	throw new Error(e);
606	+	}
607	+	}
608	+
609	+	/**
610	+	* Returns junit-style testSuite for the jdk8 extension of the
611	+	* given test class, but parameterized by passing extra data to
612	+	* each test.  Uses reflection to allow compilation in jdk7.
613	+	*/
614	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
615	+	(Class<? extends JSR166TestCase> testClass,
616	+	Class<ExtraData> dataClass,
617	+	ExtraData data) {
618	+	if (atLeastJava8()) {
619	+	String name = testClass.getName();
620	+	String name8 = name.replaceAll("Test$", "8Test");
621	+	if (name.equals(name8)) throw new Error(name);
622	+	try {
623	+	return (Test)
624	+	Class.forName(name8)
625	+	.getMethod("testSuite", new Class[] { dataClass })
626	+	.invoke(null, data);
627	+	} catch (Exception e) {
628	+	throw new Error(e);
629	+	}
630	+	} else {
631	+	return new TestSuite();
632	+	}
633	+	}
634	+
635	+	// Delays for timing-dependent tests, in milliseconds.
636
637		public static long SHORT_DELAY_MS;
638		public static long SMALL_DELAY_MS;
639		public static long MEDIUM_DELAY_MS;
640		public static long LONG_DELAY_MS;
641
642	+	private static final long RANDOM_TIMEOUT;
643	+	private static final long RANDOM_EXPIRED_TIMEOUT;
644	+	private static final TimeUnit RANDOM_TIMEUNIT;
645	+	static {
646	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
647	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
648	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
649	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
650	+	TimeUnit[] timeUnits = TimeUnit.values();
651	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
652	+	}
653	+
654	+	/**
655	+	* Returns a timeout for use when any value at all will do.
656	+	*/
657	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
658	+
659	+	/**
660	+	* Returns a timeout that means "no waiting", i.e. not positive.
661	+	*/
662	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
663	+
664	+	/**
665	+	* Returns a random non-null TimeUnit.
666	+	*/
667	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
668
669		/**
670	<	* Returns the shortest timed delay. This could
671	<	* be reimplemented to use for example a Property.
670	>	* Returns the shortest timed delay. This can be scaled up for
671	>	* slow machines using the jsr166.delay.factor system property,
672	>	* or via jtreg's -timeoutFactor: flag.
673	>	* http://openjdk.java.net/jtreg/command-help.html
674		*/
675		protected long getShortDelay() {
676	<	return 50;
676	>	return (long) (50 * delayFactor);
677		}
678
203	–
679		/**
680		* Sets delays as multiples of SHORT_DELAY.
681		*/
682		protected void setDelays() {
683		SHORT_DELAY_MS = getShortDelay();
684	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
684	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
685		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
686	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
686	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
687	>	}
688	>
689	>	private static final long TIMEOUT_DELAY_MS
690	>	= (long) (12.0 * Math.cbrt(delayFactor));
691	>
692	>	/**
693	>	* Returns a timeout in milliseconds to be used in tests that verify
694	>	* that operations block or time out.  We want this to be longer
695	>	* than the OS scheduling quantum, but not too long, so don't scale
696	>	* linearly with delayFactor; we use "crazy" cube root instead.
697	>	*/
698	>	static long timeoutMillis() {
699	>	return TIMEOUT_DELAY_MS;
700	>	}
701	>
702	>	/**
703	>	* Returns a new Date instance representing a time at least
704	>	* delayMillis milliseconds in the future.
705	>	*/
706	>	Date delayedDate(long delayMillis) {
707	>	// Add 1 because currentTimeMillis is known to round into the past.
708	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
709		}
710
711		/**
712	<	* Flag set true if any threadAssert methods fail
712	>	* The first exception encountered if any threadAssertXXX method fails.
713		*/
714	<	volatile boolean threadFailed;
714	>	private final AtomicReference<Throwable> threadFailure
715	>	= new AtomicReference<>(null);
716
717		/**
718	<	* Initializes test to indicate that no thread assertions have failed
718	>	* Records an exception so that it can be rethrown later in the test
719	>	* harness thread, triggering a test case failure.  Only the first
720	>	* failure is recorded; subsequent calls to this method from within
721	>	* the same test have no effect.
722		*/
723	+	public void threadRecordFailure(Throwable t) {
724	+	System.err.println(t);
725	+	dumpTestThreads();
726	+	threadFailure.compareAndSet(null, t);
727	+	}
728	+
729		public void setUp() {
730		setDelays();
731	<	threadFailed = false;
731	>	}
732	>
733	>	void tearDownFail(String format, Object... args) {
734	>	String msg = toString() + ": " + String.format(format, args);
735	>	System.err.println(msg);
736	>	dumpTestThreads();
737	>	throw new AssertionFailedError(msg);
738	>	}
739	>
740	>	/**
741	>	* Extra checks that get done for all test cases.
742	>	*
743	>	* Triggers test case failure if any thread assertions have failed,
744	>	* by rethrowing, in the test harness thread, any exception recorded
745	>	* earlier by threadRecordFailure.
746	>	*
747	>	* Triggers test case failure if interrupt status is set in the main thread.
748	>	*/
749	>	public void tearDown() throws Exception {
750	>	Throwable t = threadFailure.getAndSet(null);
751	>	if (t != null) {
752	>	if (t instanceof Error)
753	>	throw (Error) t;
754	>	else if (t instanceof RuntimeException)
755	>	throw (RuntimeException) t;
756	>	else if (t instanceof Exception)
757	>	throw (Exception) t;
758	>	else {
759	>	AssertionFailedError afe =
760	>	new AssertionFailedError(t.toString());
761	>	afe.initCause(t);
762	>	throw afe;
763	>	}
764	>	}
765	>
766	>	if (Thread.interrupted())
767	>	tearDownFail("interrupt status set in main thread");
768	>
769	>	checkForkJoinPoolThreadLeaks();
770		}
771
772		/**
773	<	* Triggers test case failure if any thread assertions have failed
773	>	* Finds missing PoolCleaners
774		*/
775	<	public void tearDown() {
776	<	assertFalse(threadFailed);
775	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
776	>	Thread[] survivors = new Thread[7];
777	>	int count = Thread.enumerate(survivors);
778	>	for (int i = 0; i < count; i++) {
779	>	Thread thread = survivors[i];
780	>	String name = thread.getName();
781	>	if (name.startsWith("ForkJoinPool-")) {
782	>	// give thread some time to terminate
783	>	thread.join(LONG_DELAY_MS);
784	>	if (thread.isAlive())
785	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
786	>	thread);
787	>	}
788	>	}
789	>
790	>	if (!ForkJoinPool.commonPool()
791	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
792	>	tearDownFail("ForkJoin common pool thread stuck");
793		}
794
795		/**
796	<	* Fail, also setting status to indicate current testcase should fail
796	>	* Just like fail(reason), but additionally recording (using
797	>	* threadRecordFailure) any AssertionFailedError thrown, so that
798	>	* the current testcase will fail.
799		*/
800		public void threadFail(String reason) {
801	<	threadFailed = true;
802	<	fail(reason);
801	>	try {
802	>	fail(reason);
803	>	} catch (AssertionFailedError t) {
804	>	threadRecordFailure(t);
805	>	throw t;
806	>	}
807		}
808
809		/**
810	<	* If expression not true, set status to indicate current testcase
811	<	* should fail
810	>	* Just like assertTrue(b), but additionally recording (using
811	>	* threadRecordFailure) any AssertionFailedError thrown, so that
812	>	* the current testcase will fail.
813		*/
814		public void threadAssertTrue(boolean b) {
815	<	if (!b) {
248	<	threadFailed = true;
815	>	try {
816		assertTrue(b);
817	+	} catch (AssertionFailedError t) {
818	+	threadRecordFailure(t);
819	+	throw t;
820		}
821		}
822
823		/**
824	<	* If expression not false, set status to indicate current testcase
825	<	* should fail
824	>	* Just like assertFalse(b), but additionally recording (using
825	>	* threadRecordFailure) any AssertionFailedError thrown, so that
826	>	* the current testcase will fail.
827		*/
828		public void threadAssertFalse(boolean b) {
829	<	if (b) {
259	<	threadFailed = true;
829	>	try {
830		assertFalse(b);
831	+	} catch (AssertionFailedError t) {
832	+	threadRecordFailure(t);
833	+	throw t;
834		}
835		}
836
837		/**
838	<	* If argument not null, set status to indicate current testcase
839	<	* should fail
838	>	* Just like assertNull(x), but additionally recording (using
839	>	* threadRecordFailure) any AssertionFailedError thrown, so that
840	>	* the current testcase will fail.
841		*/
842		public void threadAssertNull(Object x) {
843	<	if (x != null) {
270	<	threadFailed = true;
843	>	try {
844		assertNull(x);
845	+	} catch (AssertionFailedError t) {
846	+	threadRecordFailure(t);
847	+	throw t;
848		}
849		}
850
851		/**
852	<	* If arguments not equal, set status to indicate current testcase
853	<	* should fail
852	>	* Just like assertEquals(x, y), but additionally recording (using
853	>	* threadRecordFailure) any AssertionFailedError thrown, so that
854	>	* the current testcase will fail.
855		*/
856		public void threadAssertEquals(long x, long y) {
857	<	if (x != y) {
281	<	threadFailed = true;
857	>	try {
858		assertEquals(x, y);
859	+	} catch (AssertionFailedError t) {
860	+	threadRecordFailure(t);
861	+	throw t;
862		}
863		}
864
865		/**
866	<	* If arguments not equal, set status to indicate current testcase
867	<	* should fail
866	>	* Just like assertEquals(x, y), but additionally recording (using
867	>	* threadRecordFailure) any AssertionFailedError thrown, so that
868	>	* the current testcase will fail.
869		*/
870		public void threadAssertEquals(Object x, Object y) {
871	<	if (x != y && (x == null || !x.equals(y))) {
292	<	threadFailed = true;
871	>	try {
872		assertEquals(x, y);
873	+	} catch (AssertionFailedError fail) {
874	+	threadRecordFailure(fail);
875	+	throw fail;
876	+	} catch (Throwable fail) {
877	+	threadUnexpectedException(fail);
878		}
879		}
880
881		/**
882	<	* If arguments not identical, set status to indicate current testcase
883	<	* should fail
882	>	* Just like assertSame(x, y), but additionally recording (using
883	>	* threadRecordFailure) any AssertionFailedError thrown, so that
884	>	* the current testcase will fail.
885		*/
886		public void threadAssertSame(Object x, Object y) {
887	<	if (x != y) {
303	<	threadFailed = true;
887	>	try {
888		assertSame(x, y);
889	+	} catch (AssertionFailedError fail) {
890	+	threadRecordFailure(fail);
891	+	throw fail;
892		}
893		}
894
895		/**
896	<	* threadFail with message "should throw exception"
896	>	* Calls threadFail with message "should throw exception".
897		*/
898		public void threadShouldThrow() {
899	<	threadFailed = true;
313	<	fail("should throw exception");
899	>	threadFail("should throw exception");
900		}
901
902		/**
903	<	* threadFail with message "should throw" + exceptionName
903	>	* Calls threadFail with message "should throw" + exceptionName.
904		*/
905		public void threadShouldThrow(String exceptionName) {
906	<	threadFailed = true;
321	<	fail("should throw " + exceptionName);
906	>	threadFail("should throw " + exceptionName);
907		}
908
909		/**
910	<	* threadFail with message "Unexpected exception"
910	>	* Records the given exception using {@link #threadRecordFailure},
911	>	* then rethrows the exception, wrapping it in an
912	>	* AssertionFailedError if necessary.
913		*/
914	<	public void threadUnexpectedException() {
915	<	threadFailed = true;
916	<	fail("Unexpected exception");
914	>	public void threadUnexpectedException(Throwable t) {
915	>	threadRecordFailure(t);
916	>	t.printStackTrace();
917	>	if (t instanceof RuntimeException)
918	>	throw (RuntimeException) t;
919	>	else if (t instanceof Error)
920	>	throw (Error) t;
921	>	else {
922	>	AssertionFailedError afe =
923	>	new AssertionFailedError("unexpected exception: " + t);
924	>	afe.initCause(t);
925	>	throw afe;
926	>	}
927	>	}
928	>
929	>	/**
930	>	* Delays, via Thread.sleep, for the given millisecond delay, but
931	>	* if the sleep is shorter than specified, may re-sleep or yield
932	>	* until time elapses.  Ensures that the given time, as measured
933	>	* by System.nanoTime(), has elapsed.
934	>	*/
935	>	static void delay(long millis) throws InterruptedException {
936	>	long nanos = millis * (1000 * 1000);
937	>	final long wakeupTime = System.nanoTime() + nanos;
938	>	do {
939	>	if (millis > 0L)
940	>	Thread.sleep(millis);
941	>	else // too short to sleep
942	>	Thread.yield();
943	>	nanos = wakeupTime - System.nanoTime();
944	>	millis = nanos / (1000 * 1000);
945	>	} while (nanos >= 0L);
946		}
947
948		/**
949	<	* threadFail with message "Unexpected exception", with argument
949	>	* Allows use of try-with-resources with per-test thread pools.
950		*/
951	<	public void threadUnexpectedException(Throwable ex) {
952	<	threadFailed = true;
953	<	ex.printStackTrace();
954	<	fail("Unexpected exception: " + ex);
951	>	class PoolCleaner implements AutoCloseable {
952	>	private final ExecutorService pool;
953	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
954	>	public void close() { joinPool(pool); }
955		}
956
957		/**
958	<	* Wait out termination of a thread pool or fail doing so
958	>	* An extension of PoolCleaner that has an action to release the pool.
959		*/
960	<	public void joinPool(ExecutorService exec) {
960	>	class PoolCleanerWithReleaser extends PoolCleaner {
961	>	private final Runnable releaser;
962	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
963	>	super(pool);
964	>	this.releaser = releaser;
965	>	}
966	>	public void close() {
967	>	try {
968	>	releaser.run();
969	>	} finally {
970	>	super.close();
971	>	}
972	>	}
973	>	}
974	>
975	>	PoolCleaner cleaner(ExecutorService pool) {
976	>	return new PoolCleaner(pool);
977	>	}
978	>
979	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
980	>	return new PoolCleanerWithReleaser(pool, releaser);
981	>	}
982	>
983	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
984	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
985	>	}
986	>
987	>	Runnable releaser(final CountDownLatch latch) {
988	>	return new Runnable() { public void run() {
989	>	do { latch.countDown(); }
990	>	while (latch.getCount() > 0);
991	>	}};
992	>	}
993	>
994	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
995	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
996	>	}
997	>
998	>	Runnable releaser(final AtomicBoolean flag) {
999	>	return new Runnable() { public void run() { flag.set(true); }};
1000	>	}
1001	>
1002	>	/**
1003	>	* Waits out termination of a thread pool or fails doing so.
1004	>	*/
1005	>	void joinPool(ExecutorService pool) {
1006		try {
1007	<	exec.shutdown();
1008	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
1007	>	pool.shutdown();
1008	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1009	>	try {
1010	>	threadFail("ExecutorService " + pool +
1011	>	" did not terminate in a timely manner");
1012	>	} finally {
1013	>	// last resort, for the benefit of subsequent tests
1014	>	pool.shutdownNow();
1015	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1016	>	}
1017	>	}
1018		} catch (SecurityException ok) {
1019		// Allowed in case test doesn't have privs
1020	<	} catch (InterruptedException ie) {
1021	<	fail("Unexpected InterruptedException");
1020	>	} catch (InterruptedException fail) {
1021	>	threadFail("Unexpected InterruptedException");
1022		}
1023		}
1024
1025	+	/**
1026	+	* Like Runnable, but with the freedom to throw anything.
1027	+	* junit folks had the same idea:
1028	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1029	+	*/
1030	+	interface Action { public void run() throws Throwable; }
1031
1032		/**
1033	<	* fail with message "should throw exception"
1033	>	* Runs all the given actions in parallel, failing if any fail.
1034	>	* Useful for running multiple variants of tests that are
1035	>	* necessarily individually slow because they must block.
1036		*/
1037	<	public void shouldThrow() {
1038	<	fail("Should throw exception");
1037	>	void testInParallel(Action ... actions) {
1038	>	ExecutorService pool = Executors.newCachedThreadPool();
1039	>	try (PoolCleaner cleaner = cleaner(pool)) {
1040	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1041	>	for (final Action action : actions)
1042	>	futures.add(pool.submit(new CheckedRunnable() {
1043	>	public void realRun() throws Throwable { action.run();}}));
1044	>	for (Future<?> future : futures)
1045	>	try {
1046	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1047	>	} catch (ExecutionException ex) {
1048	>	threadUnexpectedException(ex.getCause());
1049	>	} catch (Exception ex) {
1050	>	threadUnexpectedException(ex);
1051	>	}
1052	>	}
1053		}
1054
1055		/**
1056	<	* fail with message "should throw " + exceptionName
1056	>	* A debugging tool to print stack traces of most threads, as jstack does.
1057	>	* Uninteresting threads are filtered out.
1058		*/
1059	<	public void shouldThrow(String exceptionName) {
1060	<	fail("Should throw " + exceptionName);
1059	>	static void dumpTestThreads() {
1060	>	SecurityManager sm = System.getSecurityManager();
1061	>	if (sm != null) {
1062	>	try {
1063	>	System.setSecurityManager(null);
1064	>	} catch (SecurityException giveUp) {
1065	>	return;
1066	>	}
1067	>	}
1068	>
1069	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1070	>	System.err.println("------ stacktrace dump start ------");
1071	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1072	>	final String name = info.getThreadName();
1073	>	String lockName;
1074	>	if ("Signal Dispatcher".equals(name))
1075	>	continue;
1076	>	if ("Reference Handler".equals(name)
1077	>	&& (lockName = info.getLockName()) != null
1078	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1079	>	continue;
1080	>	if ("Finalizer".equals(name)
1081	>	&& (lockName = info.getLockName()) != null
1082	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1083	>	continue;
1084	>	if ("checkForWedgedTest".equals(name))
1085	>	continue;
1086	>	System.err.print(info);
1087	>	}
1088	>	System.err.println("------ stacktrace dump end ------");
1089	>
1090	>	if (sm != null) System.setSecurityManager(sm);
1091	>	}
1092	>
1093	>	/**
1094	>	* Checks that thread eventually enters the expected blocked thread state.
1095	>	*/
1096	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1097	>	// always sleep at least 1 ms, with high probability avoiding
1098	>	// transitory states
1099	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1100	>	try { delay(1); }
1101	>	catch (InterruptedException fail) {
1102	>	fail("Unexpected InterruptedException");
1103	>	}
1104	>	Thread.State s = thread.getState();
1105	>	if (s == expected)
1106	>	return;
1107	>	else if (s == Thread.State.TERMINATED)
1108	>	fail("Unexpected thread termination");
1109	>	}
1110	>	fail("timed out waiting for thread to enter thread state " + expected);
1111	>	}
1112	>
1113	>	/**
1114	>	* Checks that thread does not terminate within the default
1115	>	* millisecond delay of {@code timeoutMillis()}.
1116	>	* TODO: REMOVEME
1117	>	*/
1118	>	void assertThreadStaysAlive(Thread thread) {
1119	>	assertThreadStaysAlive(thread, timeoutMillis());
1120	>	}
1121	>
1122	>	/**
1123	>	* Checks that thread does not terminate within the given millisecond delay.
1124	>	* TODO: REMOVEME
1125	>	*/
1126	>	void assertThreadStaysAlive(Thread thread, long millis) {
1127	>	try {
1128	>	// No need to optimize the failing case via Thread.join.
1129	>	delay(millis);
1130	>	assertTrue(thread.isAlive());
1131	>	} catch (InterruptedException fail) {
1132	>	threadFail("Unexpected InterruptedException");
1133	>	}
1134	>	}
1135	>
1136	>	/**
1137	>	* Checks that the threads do not terminate within the default
1138	>	* millisecond delay of {@code timeoutMillis()}.
1139	>	* TODO: REMOVEME
1140	>	*/
1141	>	void assertThreadsStayAlive(Thread... threads) {
1142	>	assertThreadsStayAlive(timeoutMillis(), threads);
1143	>	}
1144	>
1145	>	/**
1146	>	* Checks that the threads do not terminate within the given millisecond delay.
1147	>	* TODO: REMOVEME
1148	>	*/
1149	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1150	>	try {
1151	>	// No need to optimize the failing case via Thread.join.
1152	>	delay(millis);
1153	>	for (Thread thread : threads)
1154	>	assertTrue(thread.isAlive());
1155	>	} catch (InterruptedException fail) {
1156	>	threadFail("Unexpected InterruptedException");
1157	>	}
1158	>	}
1159	>
1160	>	/**
1161	>	* Checks that future.get times out, with the default timeout of
1162	>	* {@code timeoutMillis()}.
1163	>	*/
1164	>	void assertFutureTimesOut(Future future) {
1165	>	assertFutureTimesOut(future, timeoutMillis());
1166		}
1167
1168		/**
1169	<	* fail with message "Unexpected exception"
1169	>	* Checks that future.get times out, with the given millisecond timeout.
1170		*/
1171	<	public void unexpectedException() {
1172	<	fail("Unexpected exception");
1171	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1172	>	long startTime = System.nanoTime();
1173	>	try {
1174	>	future.get(timeoutMillis, MILLISECONDS);
1175	>	shouldThrow();
1176	>	} catch (TimeoutException success) {
1177	>	} catch (Exception fail) {
1178	>	threadUnexpectedException(fail);
1179	>	} finally { future.cancel(true); }
1180	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1181		}
1182
1183		/**
1184	<	* fail with message "Unexpected exception", with argument
1184	>	* Fails with message "should throw exception".
1185		*/
1186	<	public void unexpectedException(Throwable ex) {
1187	<	ex.printStackTrace();
382	<	fail("Unexpected exception: " + ex);
1186	>	public void shouldThrow() {
1187	>	fail("Should throw exception");
1188		}
1189
1190	+	/**
1191	+	* Fails with message "should throw " + exceptionName.
1192	+	*/
1193	+	public void shouldThrow(String exceptionName) {
1194	+	fail("Should throw " + exceptionName);
1195	+	}
1196	+
1197	+	/**
1198	+	* The maximum number of consecutive spurious wakeups we should
1199	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1200	+	*/
1201	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1202
1203		/**
1204		* The number of elements to place in collections, arrays, etc.
#	Line 408 | Line 1225 | public class JSR166TestCase extends Test
1225		public static final Integer m6  = new Integer(-6);
1226		public static final Integer m10 = new Integer(-10);
1227
411	–
1228		/**
1229		* Runs Runnable r with a security policy that permits precisely
1230		* the specified permissions.  If there is no current security
#	Line 420 | Line 1236 | public class JSR166TestCase extends Test
1236		SecurityManager sm = System.getSecurityManager();
1237		if (sm == null) {
1238		r.run();
1239	+	}
1240	+	runWithSecurityManagerWithPermissions(r, permissions);
1241	+	}
1242	+
1243	+	/**
1244	+	* Runs Runnable r with a security policy that permits precisely
1245	+	* the specified permissions.  If there is no current security
1246	+	* manager, a temporary one is set for the duration of the
1247	+	* Runnable.  We require that any security manager permit
1248	+	* getPolicy/setPolicy.
1249	+	*/
1250	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1251	+	Permission... permissions) {
1252	+	SecurityManager sm = System.getSecurityManager();
1253	+	if (sm == null) {
1254		Policy savedPolicy = Policy.getPolicy();
1255		try {
1256		Policy.setPolicy(permissivePolicy());
1257		System.setSecurityManager(new SecurityManager());
1258	<	runWithPermissions(r, permissions);
1258	>	runWithSecurityManagerWithPermissions(r, permissions);
1259		} finally {
1260		System.setSecurityManager(null);
1261		Policy.setPolicy(savedPolicy);
#	Line 472 | Line 1303 | public class JSR166TestCase extends Test
1303		return perms.implies(p);
1304		}
1305		public void refresh() {}
1306	+	public String toString() {
1307	+	List<Permission> ps = new ArrayList<>();
1308	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1309	+	ps.add(e.nextElement());
1310	+	return "AdjustablePolicy with permissions " + ps;
1311	+	}
1312		}
1313
1314		/**
#	Line 494 | Line 1331 | public class JSR166TestCase extends Test
1331		}
1332
1333		/**
1334	<	* Sleep until the timeout has elapsed, or interrupted.
1335	<	* Does <em>NOT</em> throw InterruptedException.
1334	>	* Sleeps until the given time has elapsed.
1335	>	* Throws AssertionFailedError if interrupted.
1336		*/
1337	<	void sleepTillInterrupted(long timeoutMillis) {
1337	>	static void sleep(long millis) {
1338		try {
1339	<	Thread.sleep(timeoutMillis);
1340	<	} catch (InterruptedException wakeup) {}
1339	>	delay(millis);
1340	>	} catch (InterruptedException fail) {
1341	>	AssertionFailedError afe =
1342	>	new AssertionFailedError("Unexpected InterruptedException");
1343	>	afe.initCause(fail);
1344	>	throw afe;
1345	>	}
1346	>	}
1347	>
1348	>	/**
1349	>	* Spin-waits up to the specified number of milliseconds for the given
1350	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1351	>	*/
1352	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1353	>	long startTime = 0L;
1354	>	for (;;) {
1355	>	Thread.State s = thread.getState();
1356	>	if (s == Thread.State.BLOCKED ||
1357	>	s == Thread.State.WAITING ||
1358	>	s == Thread.State.TIMED_WAITING)
1359	>	return;
1360	>	else if (s == Thread.State.TERMINATED)
1361	>	fail("Unexpected thread termination");
1362	>	else if (startTime == 0L)
1363	>	startTime = System.nanoTime();
1364	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1365	>	threadAssertTrue(thread.isAlive());
1366	>	fail("timed out waiting for thread to enter wait state");
1367	>	}
1368	>	Thread.yield();
1369	>	}
1370		}
1371
1372		/**
1373	<	* Returns a new started Thread running the given runnable.
1373	>	* Spin-waits up to the specified number of milliseconds for the given
1374	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1375	>	* and additionally satisfy the given condition.
1376	>	*/
1377	>	void waitForThreadToEnterWaitState(
1378	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1379	>	long startTime = 0L;
1380	>	for (;;) {
1381	>	Thread.State s = thread.getState();
1382	>	if (s == Thread.State.BLOCKED ||
1383	>	s == Thread.State.WAITING ||
1384	>	s == Thread.State.TIMED_WAITING) {
1385	>	try {
1386	>	if (waitingForGodot.call())
1387	>	return;
1388	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1389	>	}
1390	>	else if (s == Thread.State.TERMINATED)
1391	>	fail("Unexpected thread termination");
1392	>	else if (startTime == 0L)
1393	>	startTime = System.nanoTime();
1394	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1395	>	threadAssertTrue(thread.isAlive());
1396	>	fail("timed out waiting for thread to enter wait state");
1397	>	}
1398	>	Thread.yield();
1399	>	}
1400	>	}
1401	>
1402	>	/**
1403	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1404	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1405	>	*/
1406	>	void waitForThreadToEnterWaitState(Thread thread) {
1407	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1408	>	}
1409	>
1410	>	/**
1411	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1412	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1413	>	* and additionally satisfy the given condition.
1414	>	*/
1415	>	void waitForThreadToEnterWaitState(
1416	>	Thread thread, Callable<Boolean> waitingForGodot) {
1417	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1418	>	}
1419	>
1420	>	/**
1421	>	* Returns the number of milliseconds since time given by
1422	>	* startNanoTime, which must have been previously returned from a
1423	>	* call to {@link System#nanoTime()}.
1424	>	*/
1425	>	static long millisElapsedSince(long startNanoTime) {
1426	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1427	>	}
1428	>
1429	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1430	>	//         long startTime = System.nanoTime();
1431	>	//         try {
1432	>	//             r.run();
1433	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1434	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1435	>	//             throw new AssertionFailedError("did not return promptly");
1436	>	//     }
1437	>
1438	>	//     void assertTerminatesPromptly(Runnable r) {
1439	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1440	>	//     }
1441	>
1442	>	/**
1443	>	* Checks that timed f.get() returns the expected value, and does not
1444	>	* wait for the timeout to elapse before returning.
1445	>	*/
1446	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1447	>	long startTime = System.nanoTime();
1448	>	try {
1449	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1450	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1451	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1452	>	throw new AssertionFailedError("timed get did not return promptly");
1453	>	}
1454	>
1455	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1456	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1457	>	}
1458	>
1459	>	/**
1460	>	* Returns a new started daemon Thread running the given runnable.
1461		*/
1462		Thread newStartedThread(Runnable runnable) {
1463		Thread t = new Thread(runnable);
1464	+	t.setDaemon(true);
1465		t.start();
1466		return t;
1467		}
1468
1469	+	/**
1470	+	* Waits for the specified time (in milliseconds) for the thread
1471	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1472	+	* the thread (in the hope that it may terminate later) and fails.
1473	+	*/
1474	+	void awaitTermination(Thread t, long timeoutMillis) {
1475	+	try {
1476	+	t.join(timeoutMillis);
1477	+	} catch (InterruptedException fail) {
1478	+	threadUnexpectedException(fail);
1479	+	} finally {
1480	+	if (t.getState() != Thread.State.TERMINATED) {
1481	+	t.interrupt();
1482	+	threadFail("timed out waiting for thread to terminate");
1483	+	}
1484	+	}
1485	+	}
1486	+
1487	+	/**
1488	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1489	+	* terminate (using {@link Thread#join(long)}), else interrupts
1490	+	* the thread (in the hope that it may terminate later) and fails.
1491	+	*/
1492	+	void awaitTermination(Thread t) {
1493	+	awaitTermination(t, LONG_DELAY_MS);
1494	+	}
1495	+
1496		// Some convenient Runnable classes
1497
1498		public abstract class CheckedRunnable implements Runnable {
#	Line 520 | Line 1501 | public class JSR166TestCase extends Test
1501		public final void run() {
1502		try {
1503		realRun();
1504	<	} catch (Throwable t) {
1505	<	threadUnexpectedException(t);
1504	>	} catch (Throwable fail) {
1505	>	threadUnexpectedException(fail);
1506		}
1507		}
1508		}
#	Line 574 | Line 1555 | public class JSR166TestCase extends Test
1555		realRun();
1556		threadShouldThrow("InterruptedException");
1557		} catch (InterruptedException success) {
1558	<	} catch (Throwable t) {
1559	<	threadUnexpectedException(t);
1558	>	threadAssertFalse(Thread.interrupted());
1559	>	} catch (Throwable fail) {
1560	>	threadUnexpectedException(fail);
1561		}
1562		}
1563		}
#	Line 586 | Line 1568 | public class JSR166TestCase extends Test
1568		public final T call() {
1569		try {
1570		return realCall();
1571	<	} catch (Throwable t) {
1572	<	threadUnexpectedException(t);
1571	>	} catch (Throwable fail) {
1572	>	threadUnexpectedException(fail);
1573	>	return null;
1574		}
592	–	return null;
1575		}
1576		}
1577
1578	<	public abstract class CheckedInterruptedCallable<T> implements Callable<T> {
1578	>	public abstract class CheckedInterruptedCallable<T>
1579	>	implements Callable<T> {
1580		protected abstract T realCall() throws Throwable;
1581
1582		public final T call() {
#	Line 602 | Line 1585 | public class JSR166TestCase extends Test
1585		threadShouldThrow("InterruptedException");
1586		return result;
1587		} catch (InterruptedException success) {
1588	<	} catch (Throwable t) {
1589	<	threadUnexpectedException(t);
1588	>	threadAssertFalse(Thread.interrupted());
1589	>	} catch (Throwable fail) {
1590	>	threadUnexpectedException(fail);
1591		}
1592		return null;
1593		}
#	Line 620 | Line 1604 | public class JSR166TestCase extends Test
1604		public static final String TEST_STRING = "a test string";
1605
1606		public static class StringTask implements Callable<String> {
1607	<	public String call() { return TEST_STRING; }
1607	>	final String value;
1608	>	public StringTask() { this(TEST_STRING); }
1609	>	public StringTask(String value) { this.value = value; }
1610	>	public String call() { return value; }
1611		}
1612
1613		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1614		return new CheckedCallable<String>() {
1615	<	public String realCall() {
1615	>	protected String realCall() {
1616		try {
1617		latch.await();
1618		} catch (InterruptedException quittingTime) {}
#	Line 633 | Line 1620 | public class JSR166TestCase extends Test
1620		}};
1621		}
1622
1623	<	public static class NPETask implements Callable<String> {
1624	<	public String call() { throw new NullPointerException(); }
1623	>	public Runnable countDowner(final CountDownLatch latch) {
1624	>	return new CheckedRunnable() {
1625	>	public void realRun() throws InterruptedException {
1626	>	latch.countDown();
1627	>	}};
1628		}
1629
1630	<	public static class CallableOne implements Callable<Integer> {
1631	<	public Integer call() { return one; }
1630	>	class LatchAwaiter extends CheckedRunnable {
1631	>	static final int NEW = 0;
1632	>	static final int RUNNING = 1;
1633	>	static final int DONE = 2;
1634	>	final CountDownLatch latch;
1635	>	int state = NEW;
1636	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1637	>	public void realRun() throws InterruptedException {
1638	>	state = 1;
1639	>	await(latch);
1640	>	state = 2;
1641	>	}
1642	>	}
1643	>
1644	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1645	>	return new LatchAwaiter(latch);
1646		}
1647
1648	<	public class ShortRunnable extends CheckedRunnable {
1649	<	protected void realRun() throws Throwable {
1650	<	Thread.sleep(SHORT_DELAY_MS);
1648	>	public void await(CountDownLatch latch, long timeoutMillis) {
1649	>	try {
1650	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1651	>	fail("timed out waiting for CountDownLatch for "
1652	>	+ (timeoutMillis/1000) + " sec");
1653	>	} catch (Throwable fail) {
1654	>	threadUnexpectedException(fail);
1655		}
1656		}
1657
1658	<	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1659	<	protected void realRun() throws InterruptedException {
1660	<	Thread.sleep(SHORT_DELAY_MS);
1658	>	public void await(CountDownLatch latch) {
1659	>	await(latch, LONG_DELAY_MS);
1660	>	}
1661	>
1662	>	public void await(Semaphore semaphore) {
1663	>	try {
1664	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1665	>	fail("timed out waiting for Semaphore for "
1666	>	+ (LONG_DELAY_MS/1000) + " sec");
1667	>	} catch (Throwable fail) {
1668	>	threadUnexpectedException(fail);
1669		}
1670		}
1671
1672	<	public class SmallRunnable extends CheckedRunnable {
1673	<	protected void realRun() throws Throwable {
1674	<	Thread.sleep(SMALL_DELAY_MS);
1672	>	public void await(CyclicBarrier barrier) {
1673	>	try {
1674	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1675	>	} catch (Throwable fail) {
1676	>	threadUnexpectedException(fail);
1677		}
1678		}
1679
1680	+	//     /**
1681	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1682	+	//      */
1683	+	//     public void await(AtomicBoolean flag) {
1684	+	//         await(flag, LONG_DELAY_MS);
1685	+	//     }
1686	+
1687	+	//     /**
1688	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1689	+	//      */
1690	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1691	+	//         long startTime = System.nanoTime();
1692	+	//         while (!flag.get()) {
1693	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1694	+	//                 throw new AssertionFailedError("timed out");
1695	+	//             Thread.yield();
1696	+	//         }
1697	+	//     }
1698	+
1699	+	public static class NPETask implements Callable<String> {
1700	+	public String call() { throw new NullPointerException(); }
1701	+	}
1702	+
1703		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1704		protected void realRun() {
1705		try {
1706	<	Thread.sleep(SMALL_DELAY_MS);
1706	>	delay(SMALL_DELAY_MS);
1707		} catch (InterruptedException ok) {}
1708		}
1709		}
1710
1711	<	public class SmallCallable extends CheckedCallable {
1712	<	protected Object realCall() throws InterruptedException {
1713	<	Thread.sleep(SMALL_DELAY_MS);
1714	<	return Boolean.TRUE;
1715	<	}
1711	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1712	>	return new CheckedRunnable() {
1713	>	protected void realRun() {
1714	>	try {
1715	>	delay(timeoutMillis);
1716	>	} catch (InterruptedException ok) {}
1717	>	}};
1718		}
1719
1720	<	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
1721	<	protected void realRun() throws InterruptedException {
1722	<	Thread.sleep(SMALL_DELAY_MS);
1720	>	/**
1721	>	* For use as ThreadFactory in constructors
1722	>	*/
1723	>	public static class SimpleThreadFactory implements ThreadFactory {
1724	>	public Thread newThread(Runnable r) {
1725	>	return new Thread(r);
1726		}
1727		}
1728
1729	<	public class MediumRunnable extends CheckedRunnable {
1730	<	protected void realRun() throws Throwable {
685	<	Thread.sleep(MEDIUM_DELAY_MS);
686	<	}
1729	>	public interface TrackedRunnable extends Runnable {
1730	>	boolean isDone();
1731		}
1732
1733	<	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1734	<	protected void realRun() throws InterruptedException {
1735	<	Thread.sleep(MEDIUM_DELAY_MS);
1733	>	public static class TrackedNoOpRunnable implements Runnable {
1734	>	public volatile boolean done = false;
1735	>	public void run() {
1736	>	done = true;
1737		}
1738		}
1739
1740	<	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1741	<	protected void realRun() {
1740	>	/**
1741	>	* Analog of CheckedRunnable for RecursiveAction
1742	>	*/
1743	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1744	>	protected abstract void realCompute() throws Throwable;
1745	>
1746	>	@Override protected final void compute() {
1747		try {
1748	<	Thread.sleep(MEDIUM_DELAY_MS);
1749	<	} catch (InterruptedException ok) {}
1748	>	realCompute();
1749	>	} catch (Throwable fail) {
1750	>	threadUnexpectedException(fail);
1751	>	}
1752		}
1753		}
1754
1755	<	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1756	<	protected void realRun() {
1755	>	/**
1756	>	* Analog of CheckedCallable for RecursiveTask
1757	>	*/
1758	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1759	>	protected abstract T realCompute() throws Throwable;
1760	>
1761	>	@Override protected final T compute() {
1762		try {
1763	<	Thread.sleep(LONG_DELAY_MS);
1764	<	} catch (InterruptedException ok) {}
1763	>	return realCompute();
1764	>	} catch (Throwable fail) {
1765	>	threadUnexpectedException(fail);
1766	>	return null;
1767	>	}
1768		}
1769		}
1770
1771		/**
1772	<	* For use as ThreadFactory in constructors
1772	>	* For use as RejectedExecutionHandler in constructors
1773		*/
1774	<	public static class SimpleThreadFactory implements ThreadFactory {
1775	<	public Thread newThread(Runnable r) {
1776	<	return new Thread(r);
717	<	}
1774	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1775	>	public void rejectedExecution(Runnable r,
1776	>	ThreadPoolExecutor executor) {}
1777		}
1778
1779	<	public static class TrackedShortRunnable implements Runnable {
1780	<	public volatile boolean done = false;
1781	<	public void run() {
1779	>	/**
1780	>	* A CyclicBarrier that uses timed await and fails with
1781	>	* AssertionFailedErrors instead of throwing checked exceptions.
1782	>	*/
1783	>	public static class CheckedBarrier extends CyclicBarrier {
1784	>	public CheckedBarrier(int parties) { super(parties); }
1785	>
1786	>	public int await() {
1787		try {
1788	<	Thread.sleep(SMALL_DELAY_MS);
1789	<	done = true;
1790	<	} catch (InterruptedException ok) {}
1788	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1789	>	} catch (TimeoutException timedOut) {
1790	>	throw new AssertionFailedError("timed out");
1791	>	} catch (Exception fail) {
1792	>	AssertionFailedError afe =
1793	>	new AssertionFailedError("Unexpected exception: " + fail);
1794	>	afe.initCause(fail);
1795	>	throw afe;
1796	>	}
1797		}
1798		}
1799
1800	<	public static class TrackedMediumRunnable implements Runnable {
1801	<	public volatile boolean done = false;
1802	<	public void run() {
1800	>	void checkEmpty(BlockingQueue q) {
1801	>	try {
1802	>	assertTrue(q.isEmpty());
1803	>	assertEquals(0, q.size());
1804	>	assertNull(q.peek());
1805	>	assertNull(q.poll());
1806	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1807	>	assertEquals(q.toString(), "[]");
1808	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1809	>	assertFalse(q.iterator().hasNext());
1810		try {
1811	<	Thread.sleep(MEDIUM_DELAY_MS);
1812	<	done = true;
1813	<	} catch (InterruptedException ok) {}
1811	>	q.element();
1812	>	shouldThrow();
1813	>	} catch (NoSuchElementException success) {}
1814	>	try {
1815	>	q.iterator().next();
1816	>	shouldThrow();
1817	>	} catch (NoSuchElementException success) {}
1818	>	try {
1819	>	q.remove();
1820	>	shouldThrow();
1821	>	} catch (NoSuchElementException success) {}
1822	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1823	>	}
1824	>
1825	>	void assertSerialEquals(Object x, Object y) {
1826	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1827	>	}
1828	>
1829	>	void assertNotSerialEquals(Object x, Object y) {
1830	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1831	>	}
1832	>
1833	>	byte[] serialBytes(Object o) {
1834	>	try {
1835	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1836	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1837	>	oos.writeObject(o);
1838	>	oos.flush();
1839	>	oos.close();
1840	>	return bos.toByteArray();
1841	>	} catch (Throwable fail) {
1842	>	threadUnexpectedException(fail);
1843	>	return new byte[0];
1844		}
1845		}
1846
1847	<	public static class TrackedLongRunnable implements Runnable {
1848	<	public volatile boolean done = false;
1849	<	public void run() {
1850	<	try {
1851	<	Thread.sleep(LONG_DELAY_MS);
1852	<	done = true;
746	<	} catch (InterruptedException ok) {}
1847	>	void assertImmutable(final Object o) {
1848	>	if (o instanceof Collection) {
1849	>	assertThrows(
1850	>	UnsupportedOperationException.class,
1851	>	new Runnable() { public void run() {
1852	>	((Collection) o).add(null);}});
1853		}
1854		}
1855
1856	<	public static class TrackedNoOpRunnable implements Runnable {
1857	<	public volatile boolean done = false;
1858	<	public void run() {
1859	<	done = true;
1856	>	@SuppressWarnings("unchecked")
1857	>	<T> T serialClone(T o) {
1858	>	try {
1859	>	ObjectInputStream ois = new ObjectInputStream
1860	>	(new ByteArrayInputStream(serialBytes(o)));
1861	>	T clone = (T) ois.readObject();
1862	>	if (o == clone) assertImmutable(o);
1863	>	assertSame(o.getClass(), clone.getClass());
1864	>	return clone;
1865	>	} catch (Throwable fail) {
1866	>	threadUnexpectedException(fail);
1867	>	return null;
1868		}
1869		}
1870
1871	<	public static class TrackedCallable implements Callable {
1872	<	public volatile boolean done = false;
1873	<	public Object call() {
1874	<	try {
1875	<	Thread.sleep(SMALL_DELAY_MS);
1876	<	done = true;
1877	<	} catch (InterruptedException ok) {}
1878	<	return Boolean.TRUE;
1871	>	/**
1872	>	* A version of serialClone that leaves error handling (for
1873	>	* e.g. NotSerializableException) up to the caller.
1874	>	*/
1875	>	@SuppressWarnings("unchecked")
1876	>	<T> T serialClonePossiblyFailing(T o)
1877	>	throws ReflectiveOperationException, java.io.IOException {
1878	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1879	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1880	>	oos.writeObject(o);
1881	>	oos.flush();
1882	>	oos.close();
1883	>	ObjectInputStream ois = new ObjectInputStream
1884	>	(new ByteArrayInputStream(bos.toByteArray()));
1885	>	T clone = (T) ois.readObject();
1886	>	if (o == clone) assertImmutable(o);
1887	>	assertSame(o.getClass(), clone.getClass());
1888	>	return clone;
1889	>	}
1890	>
1891	>	/**
1892	>	* If o implements Cloneable and has a public clone method,
1893	>	* returns a clone of o, else null.
1894	>	*/
1895	>	@SuppressWarnings("unchecked")
1896	>	<T> T cloneableClone(T o) {
1897	>	if (!(o instanceof Cloneable)) return null;
1898	>	final T clone;
1899	>	try {
1900	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1901	>	} catch (NoSuchMethodException ok) {
1902	>	return null;
1903	>	} catch (ReflectiveOperationException unexpected) {
1904	>	throw new Error(unexpected);
1905		}
1906	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1907	+	assertSame(o.getClass(), clone.getClass());
1908	+	return clone;
1909	+	}
1910	+
1911	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1912	+	Runnable... throwingActions) {
1913	+	for (Runnable throwingAction : throwingActions) {
1914	+	boolean threw = false;
1915	+	try { throwingAction.run(); }
1916	+	catch (Throwable t) {
1917	+	threw = true;
1918	+	if (!expectedExceptionClass.isInstance(t)) {
1919	+	AssertionFailedError afe =
1920	+	new AssertionFailedError
1921	+	("Expected " + expectedExceptionClass.getName() +
1922	+	", got " + t.getClass().getName());
1923	+	afe.initCause(t);
1924	+	threadUnexpectedException(afe);
1925	+	}
1926	+	}
1927	+	if (!threw)
1928	+	shouldThrow(expectedExceptionClass.getName());
1929	+	}
1930	+	}
1931	+
1932	+	public void assertIteratorExhausted(Iterator<?> it) {
1933	+	try {
1934	+	it.next();
1935	+	shouldThrow();
1936	+	} catch (NoSuchElementException success) {}
1937	+	assertFalse(it.hasNext());
1938	+	}
1939	+
1940	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1941	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1942	+	}
1943	+
1944	+	public Runnable runnableThrowing(final RuntimeException ex) {
1945	+	return new Runnable() { public void run() { throw ex; }};
1946		}
1947
1948	+	/** A reusable thread pool to be shared by tests. */
1949	+	static final ExecutorService cachedThreadPool =
1950	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1951	+	1000L, MILLISECONDS,
1952	+	new SynchronousQueue<Runnable>());
1953
1954		/**
1955	<	* For use as RejectedExecutionHandler in constructors
1955	>	* Returns maximum number of tasks that can be submitted to given
1956	>	* pool (with bounded queue) before saturation (when submission
1957	>	* throws RejectedExecutionException).
1958		*/
1959	<	public static class NoOpREHandler implements RejectedExecutionHandler {
1960	<	public void rejectedExecution(Runnable r,
1961	<	ThreadPoolExecutor executor) {}
1959	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1960	>	BlockingQueue<Runnable> q = pool.getQueue();
1961	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1962		}
1963
1964	+	static <T> void shuffle(T[] array) {
1965	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1966	+	}
1967		}

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