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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.2 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.250 by jsr166, Sat Nov 24 21:48:19 2018 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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.*;
13	<	import java.io.*;
10	>	/*
11	>	* @test
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15	>	* @build *
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41	>	*/
42
43	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	+	import static java.util.concurrent.TimeUnit.MINUTES;
45	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
46	+
47	+	import java.io.ByteArrayInputStream;
48	+	import java.io.ByteArrayOutputStream;
49	+	import java.io.ObjectInputStream;
50	+	import java.io.ObjectOutputStream;
51	+	import java.lang.management.ManagementFactory;
52	+	import java.lang.management.ThreadInfo;
53	+	import java.lang.management.ThreadMXBean;
54	+	import java.lang.reflect.Constructor;
55	+	import java.lang.reflect.Method;
56	+	import java.lang.reflect.Modifier;
57	+	import java.security.CodeSource;
58	+	import java.security.Permission;
59	+	import java.security.PermissionCollection;
60	+	import java.security.Permissions;
61	+	import java.security.Policy;
62	+	import java.security.ProtectionDomain;
63	+	import java.security.SecurityPermission;
64	+	import java.util.ArrayList;
65	+	import java.util.Arrays;
66	+	import java.util.Collection;
67	+	import java.util.Collections;
68	+	import java.util.Date;
69	+	import java.util.Deque;
70	+	import java.util.Enumeration;
71	+	import java.util.HashSet;
72	+	import java.util.Iterator;
73	+	import java.util.List;
74	+	import java.util.NoSuchElementException;
75	+	import java.util.PropertyPermission;
76	+	import java.util.Set;
77	+	import java.util.concurrent.BlockingQueue;
78	+	import java.util.concurrent.Callable;
79	+	import java.util.concurrent.CountDownLatch;
80	+	import java.util.concurrent.CyclicBarrier;
81	+	import java.util.concurrent.ExecutionException;
82	+	import java.util.concurrent.Executor;
83	+	import java.util.concurrent.Executors;
84	+	import java.util.concurrent.ExecutorService;
85	+	import java.util.concurrent.ForkJoinPool;
86	+	import java.util.concurrent.Future;
87	+	import java.util.concurrent.FutureTask;
88	+	import java.util.concurrent.RecursiveAction;
89	+	import java.util.concurrent.RecursiveTask;
90	+	import java.util.concurrent.RejectedExecutionException;
91	+	import java.util.concurrent.RejectedExecutionHandler;
92	+	import java.util.concurrent.Semaphore;
93	+	import java.util.concurrent.ScheduledExecutorService;
94	+	import java.util.concurrent.ScheduledFuture;
95	+	import java.util.concurrent.SynchronousQueue;
96	+	import java.util.concurrent.ThreadFactory;
97	+	import java.util.concurrent.ThreadLocalRandom;
98	+	import java.util.concurrent.ThreadPoolExecutor;
99	+	import java.util.concurrent.TimeUnit;
100	+	import java.util.concurrent.TimeoutException;
101	+	import java.util.concurrent.atomic.AtomicBoolean;
102	+	import java.util.concurrent.atomic.AtomicReference;
103	+	import java.util.regex.Pattern;
104	+
105	+	import junit.framework.Test;
106	+	import junit.framework.TestCase;
107	+	import junit.framework.TestResult;
108	+	import junit.framework.TestSuite;
109
110		/**
111	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
112	<	* utility methods, as well as a simple framework for helping to make
113	<	* sure that assertions failing in generated threads cause the
114	<	* associated test that generated them to itself fail (which JUnit doe
115	<	* not otherwise arrange).  The rules for creating such tests are:
111	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
112	>	* utility methods and classes, as well as a simple framework for
113	>	* helping to make sure that assertions failing in generated threads
114	>	* cause the associated test that generated them to itself fail (which
115	>	* JUnit does not otherwise arrange).  The rules for creating such
116	>	* tests are:
117		*
118		* <ol>
119		*
120	<	* <li> All assertions in code running in generated threads must use
121	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
122	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
123	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
124	<	* particularly recommended) for other code to use these forms too.
125	<	* Only the most typically used JUnit assertion methods are defined
126	<	* this way, but enough to live with.</li>
120	>	* <li>All code not running in the main test thread (manually spawned threads
121	>	* or the common fork join pool) must be checked for failure (and completion!).
122	>	* Mechanisms that can be used to ensure this are:
123	>	*   <ol>
124	>	*   <li>Signalling via a synchronizer like AtomicInteger or CountDownLatch
125	>	*    that the task completed normally, which is checked before returning from
126	>	*    the test method in the main thread.
127	>	*   <li>Using the forms {@link #threadFail}, {@link #threadAssertTrue},
128	>	*    or {@link #threadAssertNull}, (not {@code fail}, {@code assertTrue}, etc.)
129	>	*    Only the most typically used JUnit assertion methods are defined
130	>	*    this way, but enough to live with.
131	>	*   <li>Recording failure explicitly using {@link #threadUnexpectedException}
132	>	*    or {@link #threadRecordFailure}.
133	>	*   <li>Using a wrapper like CheckedRunnable that uses one the mechanisms above.
134	>	*   </ol>
135		*
136	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
137	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
136	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
137	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
138		* them. These methods are used to clear and check for thread
139	<	* assertion failures.</li>
139	>	* assertion failures.
140		*
141	<	* <li>All delays and timeouts must use one of the constants {@link
142	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
143	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
144	<	* discriminatable from zero time, and always allows enough time for
145	<	* the small amounts of computation (creating a thread, calling a few
141	>	* <li>All delays and timeouts must use one of the constants {@code
142	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
143	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
144	>	* discriminable from zero time, and always allows enough time for the
145	>	* small amounts of computation (creating a thread, calling a few
146		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
147		* is always discriminable as larger than SHORT and smaller than
148		* MEDIUM.  And so on. These constants are set to conservative values,
149		* but even so, if there is ever any doubt, they can all be increased
150	<	* in one spot to rerun tests on slower platforms</li>
150	>	* in one spot to rerun tests on slower platforms.
151		*
152	<	* <li> All threads generated must be joined inside each test case
153	<	* method (or <tt>fail</tt> to do so) before returning from the
154	<	* method. The {@link joinPool} method can be used to do this when
155	<	* using Executors.</li>
152	>	* <li>All threads generated must be joined inside each test case
153	>	* method (or {@code fail} to do so) before returning from the
154	>	* method. The {@code joinPool} method can be used to do this when
155	>	* using Executors.
156		*
157		* </ol>
158	+	*
159	+	* <p><b>Other notes</b>
160	+	* <ul>
161	+	*
162	+	* <li>Usually, there is one testcase method per JSR166 method
163	+	* covering "normal" operation, and then as many exception-testing
164	+	* methods as there are exceptions the method can throw. Sometimes
165	+	* there are multiple tests per JSR166 method when the different
166	+	* "normal" behaviors differ significantly. And sometimes testcases
167	+	* cover multiple methods when they cannot be tested in isolation.
168	+	*
169	+	* <li>The documentation style for testcases is to provide as javadoc
170	+	* a simple sentence or two describing the property that the testcase
171	+	* method purports to test. The javadocs do not say anything about how
172	+	* the property is tested. To find out, read the code.
173	+	*
174	+	* <li>These tests are "conformance tests", and do not attempt to
175	+	* test throughput, latency, scalability or other performance factors
176	+	* (see the separate "jtreg" tests for a set intended to check these
177	+	* for the most central aspects of functionality.) So, most tests use
178	+	* the smallest sensible numbers of threads, collection sizes, etc
179	+	* needed to check basic conformance.
180	+	*
181	+	* <li>The test classes currently do not declare inclusion in
182	+	* any particular package to simplify things for people integrating
183	+	* them in TCK test suites.
184	+	*
185	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
186	+	* runs all JSR166 unit tests.
187	+	*
188	+	* </ul>
189		*/
190		public class JSR166TestCase extends TestCase {
191	+	private static final boolean useSecurityManager =
192	+	Boolean.getBoolean("jsr166.useSecurityManager");
193	+
194	+	protected static final boolean expensiveTests =
195	+	Boolean.getBoolean("jsr166.expensiveTests");
196	+
197	+	/**
198	+	* If true, also run tests that are not part of the official tck
199	+	* because they test unspecified implementation details.
200	+	*/
201	+	protected static final boolean testImplementationDetails =
202	+	Boolean.getBoolean("jsr166.testImplementationDetails");
203	+
204	+	/**
205	+	* If true, report on stdout all "slow" tests, that is, ones that
206	+	* take more than profileThreshold milliseconds to execute.
207	+	*/
208	+	private static final boolean profileTests =
209	+	Boolean.getBoolean("jsr166.profileTests");
210	+
211	+	/**
212	+	* The number of milliseconds that tests are permitted for
213	+	* execution without being reported, when profileTests is set.
214	+	*/
215	+	private static final long profileThreshold =
216	+	Long.getLong("jsr166.profileThreshold", 100);
217	+
218	+	/**
219	+	* The number of repetitions per test (for tickling rare bugs).
220	+	*/
221	+	private static final int runsPerTest =
222	+	Integer.getInteger("jsr166.runsPerTest", 1);
223	+
224	+	/**
225	+	* The number of repetitions of the test suite (for finding leaks?).
226	+	*/
227	+	private static final int suiteRuns =
228	+	Integer.getInteger("jsr166.suiteRuns", 1);
229	+
230	+	/**
231	+	* Returns the value of the system property, or NaN if not defined.
232	+	*/
233	+	private static float systemPropertyValue(String name) {
234	+	String floatString = System.getProperty(name);
235	+	if (floatString == null)
236	+	return Float.NaN;
237	+	try {
238	+	return Float.parseFloat(floatString);
239	+	} catch (NumberFormatException ex) {
240	+	throw new IllegalArgumentException(
241	+	String.format("Bad float value in system property %s=%s",
242	+	name, floatString));
243	+	}
244	+	}
245	+
246	+	/**
247	+	* The scaling factor to apply to standard delays used in tests.
248	+	* May be initialized from any of:
249	+	* - the "jsr166.delay.factor" system property
250	+	* - the "test.timeout.factor" system property (as used by jtreg)
251	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
252	+	* - hard-coded fuzz factor when using a known slowpoke VM
253	+	*/
254	+	private static final float delayFactor = delayFactor();
255	+
256	+	private static float delayFactor() {
257	+	float x;
258	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
259	+	return x;
260	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
261	+	return x;
262	+	String prop = System.getProperty("java.vm.version");
263	+	if (prop != null && prop.matches(".*debug.*"))
264	+	return 4.0f; // How much slower is fastdebug than product?!
265	+	return 1.0f;
266	+	}
267	+
268	+	public JSR166TestCase() { super(); }
269	+	public JSR166TestCase(String name) { super(name); }
270	+
271	+	/**
272	+	* A filter for tests to run, matching strings of the form
273	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
274	+	* Usefully combined with jsr166.runsPerTest.
275	+	*/
276	+	private static final Pattern methodFilter = methodFilter();
277	+
278	+	private static Pattern methodFilter() {
279	+	String regex = System.getProperty("jsr166.methodFilter");
280	+	return (regex == null) ? null : Pattern.compile(regex);
281	+	}
282	+
283	+	// Instrumentation to debug very rare, but very annoying hung test runs.
284	+	static volatile TestCase currentTestCase;
285	+	// static volatile int currentRun = 0;
286	+	static {
287	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
288	+	// Avoid spurious reports with enormous runsPerTest.
289	+	// A single test case run should never take more than 1 second.
290	+	// But let's cap it at the high end too ...
291	+	final int timeoutMinutes =
292	+	Math.min(15, Math.max(runsPerTest / 60, 1));
293	+	for (TestCase lastTestCase = currentTestCase;;) {
294	+	try { MINUTES.sleep(timeoutMinutes); }
295	+	catch (InterruptedException unexpected) { break; }
296	+	if (lastTestCase == currentTestCase) {
297	+	System.err.printf(
298	+	"Looks like we're stuck running test: %s%n",
299	+	lastTestCase);
300	+	//                     System.err.printf(
301	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
302	+	//                         lastTestCase, currentRun, runsPerTest);
303	+	//                     System.err.println("availableProcessors=" +
304	+	//                         Runtime.getRuntime().availableProcessors());
305	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
306	+	dumpTestThreads();
307	+	// one stack dump is probably enough; more would be spam
308	+	break;
309	+	}
310	+	lastTestCase = currentTestCase;
311	+	}}};
312	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
313	+	thread.setDaemon(true);
314	+	thread.start();
315	+	}
316	+
317	+	//     public static String cpuModel() {
318	+	//         try {
319	+	//             java.util.regex.Matcher matcher
320	+	//               = Pattern.compile("model name\\s*: (.*)")
321	+	//                 .matcher(new String(
322	+	//                     java.nio.file.Files.readAllBytes(
323	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
324	+	//             matcher.find();
325	+	//             return matcher.group(1);
326	+	//         } catch (Exception ex) { return null; }
327	+	//     }
328	+
329	+	public void runBare() throws Throwable {
330	+	currentTestCase = this;
331	+	if (methodFilter == null
332	+	|| methodFilter.matcher(toString()).find())
333	+	super.runBare();
334	+	}
335	+
336	+	protected void runTest() throws Throwable {
337	+	for (int i = 0; i < runsPerTest; i++) {
338	+	// currentRun = i;
339	+	if (profileTests)
340	+	runTestProfiled();
341	+	else
342	+	super.runTest();
343	+	}
344	+	}
345	+
346	+	protected void runTestProfiled() throws Throwable {
347	+	for (int i = 0; i < 2; i++) {
348	+	long startTime = System.nanoTime();
349	+	super.runTest();
350	+	long elapsedMillis = millisElapsedSince(startTime);
351	+	if (elapsedMillis < profileThreshold)
352	+	break;
353	+	// Never report first run of any test; treat it as a
354	+	// warmup run, notably to trigger all needed classloading,
355	+	if (i > 0)
356	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
357	+	}
358	+	}
359	+
360	+	/**
361	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
362	+	*/
363	+	public static void main(String[] args) {
364	+	main(suite(), args);
365	+	}
366	+
367	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
368	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
369	+	long runTime;
370	+	public void startTest(Test test) {}
371	+	protected void printHeader(long runTime) {
372	+	this.runTime = runTime; // defer printing for later
373	+	}
374	+	protected void printFooter(TestResult result) {
375	+	if (result.wasSuccessful()) {
376	+	getWriter().println("OK (" + result.runCount() + " tests)"
377	+	+ "  Time: " + elapsedTimeAsString(runTime));
378	+	} else {
379	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
380	+	super.printFooter(result);
381	+	}
382	+	}
383	+	}
384	+
385	+	/**
386	+	* Returns a TestRunner that doesn't bother with unnecessary
387	+	* fluff, like printing a "." for each test case.
388	+	*/
389	+	static junit.textui.TestRunner newPithyTestRunner() {
390	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
391	+	runner.setPrinter(new PithyResultPrinter(System.out));
392	+	return runner;
393	+	}
394	+
395	+	/**
396	+	* Runs all unit tests in the given test suite.
397	+	* Actual behavior influenced by jsr166.* system properties.
398	+	*/
399	+	static void main(Test suite, String[] args) {
400	+	if (useSecurityManager) {
401	+	System.err.println("Setting a permissive security manager");
402	+	Policy.setPolicy(permissivePolicy());
403	+	System.setSecurityManager(new SecurityManager());
404	+	}
405	+	for (int i = 0; i < suiteRuns; i++) {
406	+	TestResult result = newPithyTestRunner().doRun(suite);
407	+	if (!result.wasSuccessful())
408	+	System.exit(1);
409	+	System.gc();
410	+	System.runFinalization();
411	+	}
412	+	}
413	+
414	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
415	+	TestSuite suite = new TestSuite();
416	+	for (Object suiteOrClass : suiteOrClasses) {
417	+	if (suiteOrClass instanceof TestSuite)
418	+	suite.addTest((TestSuite) suiteOrClass);
419	+	else if (suiteOrClass instanceof Class)
420	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
421	+	else
422	+	throw new ClassCastException("not a test suite or class");
423	+	}
424	+	return suite;
425	+	}
426	+
427	+	public static void addNamedTestClasses(TestSuite suite,
428	+	String... testClassNames) {
429	+	for (String testClassName : testClassNames) {
430	+	try {
431	+	Class<?> testClass = Class.forName(testClassName);
432	+	Method m = testClass.getDeclaredMethod("suite");
433	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
434	+	} catch (ReflectiveOperationException e) {
435	+	throw new AssertionError("Missing test class", e);
436	+	}
437	+	}
438	+	}
439	+
440	+	public static final double JAVA_CLASS_VERSION;
441	+	public static final String JAVA_SPECIFICATION_VERSION;
442	+	static {
443	+	try {
444	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
445	+	new java.security.PrivilegedAction<Double>() {
446	+	public Double run() {
447	+	return Double.valueOf(System.getProperty("java.class.version"));}});
448	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
449	+	new java.security.PrivilegedAction<String>() {
450	+	public String run() {
451	+	return System.getProperty("java.specification.version");}});
452	+	} catch (Throwable t) {
453	+	throw new Error(t);
454	+	}
455	+	}
456	+
457	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
458	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
459	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
460	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
461	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
462	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
463	+
464	+	/**
465	+	* Collects all JSR166 unit tests as one suite.
466	+	*/
467	+	public static Test suite() {
468	+	// Java7+ test classes
469	+	TestSuite suite = newTestSuite(
470	+	ForkJoinPoolTest.suite(),
471	+	ForkJoinTaskTest.suite(),
472	+	RecursiveActionTest.suite(),
473	+	RecursiveTaskTest.suite(),
474	+	LinkedTransferQueueTest.suite(),
475	+	PhaserTest.suite(),
476	+	ThreadLocalRandomTest.suite(),
477	+	AbstractExecutorServiceTest.suite(),
478	+	AbstractQueueTest.suite(),
479	+	AbstractQueuedSynchronizerTest.suite(),
480	+	AbstractQueuedLongSynchronizerTest.suite(),
481	+	ArrayBlockingQueueTest.suite(),
482	+	ArrayDequeTest.suite(),
483	+	ArrayListTest.suite(),
484	+	AtomicBooleanTest.suite(),
485	+	AtomicIntegerArrayTest.suite(),
486	+	AtomicIntegerFieldUpdaterTest.suite(),
487	+	AtomicIntegerTest.suite(),
488	+	AtomicLongArrayTest.suite(),
489	+	AtomicLongFieldUpdaterTest.suite(),
490	+	AtomicLongTest.suite(),
491	+	AtomicMarkableReferenceTest.suite(),
492	+	AtomicReferenceArrayTest.suite(),
493	+	AtomicReferenceFieldUpdaterTest.suite(),
494	+	AtomicReferenceTest.suite(),
495	+	AtomicStampedReferenceTest.suite(),
496	+	ConcurrentHashMapTest.suite(),
497	+	ConcurrentLinkedDequeTest.suite(),
498	+	ConcurrentLinkedQueueTest.suite(),
499	+	ConcurrentSkipListMapTest.suite(),
500	+	ConcurrentSkipListSubMapTest.suite(),
501	+	ConcurrentSkipListSetTest.suite(),
502	+	ConcurrentSkipListSubSetTest.suite(),
503	+	CopyOnWriteArrayListTest.suite(),
504	+	CopyOnWriteArraySetTest.suite(),
505	+	CountDownLatchTest.suite(),
506	+	CountedCompleterTest.suite(),
507	+	CyclicBarrierTest.suite(),
508	+	DelayQueueTest.suite(),
509	+	EntryTest.suite(),
510	+	ExchangerTest.suite(),
511	+	ExecutorsTest.suite(),
512	+	ExecutorCompletionServiceTest.suite(),
513	+	FutureTaskTest.suite(),
514	+	LinkedBlockingDequeTest.suite(),
515	+	LinkedBlockingQueueTest.suite(),
516	+	LinkedListTest.suite(),
517	+	LockSupportTest.suite(),
518	+	PriorityBlockingQueueTest.suite(),
519	+	PriorityQueueTest.suite(),
520	+	ReentrantLockTest.suite(),
521	+	ReentrantReadWriteLockTest.suite(),
522	+	ScheduledExecutorTest.suite(),
523	+	ScheduledExecutorSubclassTest.suite(),
524	+	SemaphoreTest.suite(),
525	+	SynchronousQueueTest.suite(),
526	+	SystemTest.suite(),
527	+	ThreadLocalTest.suite(),
528	+	ThreadPoolExecutorTest.suite(),
529	+	ThreadPoolExecutorSubclassTest.suite(),
530	+	ThreadTest.suite(),
531	+	TimeUnitTest.suite(),
532	+	TreeMapTest.suite(),
533	+	TreeSetTest.suite(),
534	+	TreeSubMapTest.suite(),
535	+	TreeSubSetTest.suite(),
536	+	VectorTest.suite());
537	+
538	+	// Java8+ test classes
539	+	if (atLeastJava8()) {
540	+	String[] java8TestClassNames = {
541	+	"ArrayDeque8Test",
542	+	"Atomic8Test",
543	+	"CompletableFutureTest",
544	+	"ConcurrentHashMap8Test",
545	+	"CountedCompleter8Test",
546	+	"DoubleAccumulatorTest",
547	+	"DoubleAdderTest",
548	+	"ForkJoinPool8Test",
549	+	"ForkJoinTask8Test",
550	+	"HashMapTest",
551	+	"LinkedBlockingDeque8Test",
552	+	"LinkedBlockingQueue8Test",
553	+	"LongAccumulatorTest",
554	+	"LongAdderTest",
555	+	"SplittableRandomTest",
556	+	"StampedLockTest",
557	+	"SubmissionPublisherTest",
558	+	"ThreadLocalRandom8Test",
559	+	"TimeUnit8Test",
560	+	};
561	+	addNamedTestClasses(suite, java8TestClassNames);
562	+	}
563	+
564	+	// Java9+ test classes
565	+	if (atLeastJava9()) {
566	+	String[] java9TestClassNames = {
567	+	"AtomicBoolean9Test",
568	+	"AtomicInteger9Test",
569	+	"AtomicIntegerArray9Test",
570	+	"AtomicLong9Test",
571	+	"AtomicLongArray9Test",
572	+	"AtomicReference9Test",
573	+	"AtomicReferenceArray9Test",
574	+	"ExecutorCompletionService9Test",
575	+	"ForkJoinPool9Test",
576	+	};
577	+	addNamedTestClasses(suite, java9TestClassNames);
578	+	}
579	+
580	+	return suite;
581	+	}
582	+
583	+	/** Returns list of junit-style test method names in given class. */
584	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
585	+	Method[] methods = testClass.getDeclaredMethods();
586	+	ArrayList<String> names = new ArrayList<>(methods.length);
587	+	for (Method method : methods) {
588	+	if (method.getName().startsWith("test")
589	+	&& Modifier.isPublic(method.getModifiers())
590	+	// method.getParameterCount() requires jdk8+
591	+	&& method.getParameterTypes().length == 0) {
592	+	names.add(method.getName());
593	+	}
594	+	}
595	+	return names;
596	+	}
597	+
598	+	/**
599	+	* Returns junit-style testSuite for the given test class, but
600	+	* parameterized by passing extra data to each test.
601	+	*/
602	+	public static <ExtraData> Test parameterizedTestSuite
603	+	(Class<? extends JSR166TestCase> testClass,
604	+	Class<ExtraData> dataClass,
605	+	ExtraData data) {
606	+	try {
607	+	TestSuite suite = new TestSuite();
608	+	Constructor c =
609	+	testClass.getDeclaredConstructor(dataClass, String.class);
610	+	for (String methodName : testMethodNames(testClass))
611	+	suite.addTest((Test) c.newInstance(data, methodName));
612	+	return suite;
613	+	} catch (ReflectiveOperationException e) {
614	+	throw new AssertionError(e);
615	+	}
616	+	}
617	+
618	+	/**
619	+	* Returns junit-style testSuite for the jdk8 extension of the
620	+	* given test class, but parameterized by passing extra data to
621	+	* each test.  Uses reflection to allow compilation in jdk7.
622	+	*/
623	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
624	+	(Class<? extends JSR166TestCase> testClass,
625	+	Class<ExtraData> dataClass,
626	+	ExtraData data) {
627	+	if (atLeastJava8()) {
628	+	String name = testClass.getName();
629	+	String name8 = name.replaceAll("Test$", "8Test");
630	+	if (name.equals(name8)) throw new AssertionError(name);
631	+	try {
632	+	return (Test)
633	+	Class.forName(name8)
634	+	.getMethod("testSuite", dataClass)
635	+	.invoke(null, data);
636	+	} catch (ReflectiveOperationException e) {
637	+	throw new AssertionError(e);
638	+	}
639	+	} else {
640	+	return new TestSuite();
641	+	}
642	+	}
643	+
644	+	// Delays for timing-dependent tests, in milliseconds.
645
646		public static long SHORT_DELAY_MS;
647		public static long SMALL_DELAY_MS;
648		public static long MEDIUM_DELAY_MS;
649		public static long LONG_DELAY_MS;
650
651	+	private static final long RANDOM_TIMEOUT;
652	+	private static final long RANDOM_EXPIRED_TIMEOUT;
653	+	private static final TimeUnit RANDOM_TIMEUNIT;
654	+	static {
655	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
656	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
657	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
658	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
659	+	TimeUnit[] timeUnits = TimeUnit.values();
660	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
661	+	}
662	+
663	+	/**
664	+	* Returns a timeout for use when any value at all will do.
665	+	*/
666	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
667	+
668	+	/**
669	+	* Returns a timeout that means "no waiting", i.e. not positive.
670	+	*/
671	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
672	+
673	+	/**
674	+	* Returns a random non-null TimeUnit.
675	+	*/
676	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
677
678		/**
679	<	* Return the shortest timed delay. This could
680	<	* be reimplmented to use for example a Property.
681	<	*/
679	>	* Returns the shortest timed delay. This can be scaled up for
680	>	* slow machines using the jsr166.delay.factor system property,
681	>	* or via jtreg's -timeoutFactor: flag.
682	>	* http://openjdk.java.net/jtreg/command-help.html
683	>	*/
684		protected long getShortDelay() {
685	<	return 50;
685	>	return (long) (50 * delayFactor);
686		}
687
70	–
688		/**
689	<	* Set delays as multiples fo SHORT_DELAY.
689	>	* Sets delays as multiples of SHORT_DELAY.
690		*/
691	<	protected  void setDelays() {
691	>	protected void setDelays() {
692		SHORT_DELAY_MS = getShortDelay();
693	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
693	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
694		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
695	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
695	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
696		}
697
698	+	private static final long TIMEOUT_DELAY_MS
699	+	= (long) (12.0 * Math.cbrt(delayFactor));
700	+
701		/**
702	<	* Flag set true if any threadAssert methods fail
702	>	* Returns a timeout in milliseconds to be used in tests that verify
703	>	* that operations block or time out.  We want this to be longer
704	>	* than the OS scheduling quantum, but not too long, so don't scale
705	>	* linearly with delayFactor; we use "crazy" cube root instead.
706		*/
707	<	protected volatile boolean threadFailed;
707	>	static long timeoutMillis() {
708	>	return TIMEOUT_DELAY_MS;
709	>	}
710
711		/**
712	<	* Initialize test to indicat that no thread assertions have failed
712	>	* Returns a new Date instance representing a time at least
713	>	* delayMillis milliseconds in the future.
714		*/
715	<	public void setUp() {
715	>	Date delayedDate(long delayMillis) {
716	>	// Add 1 because currentTimeMillis is known to round into the past.
717	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
718	>	}
719	>
720	>	/**
721	>	* The first exception encountered if any threadAssertXXX method fails.
722	>	*/
723	>	private final AtomicReference<Throwable> threadFailure
724	>	= new AtomicReference<>(null);
725	>
726	>	/**
727	>	* Records an exception so that it can be rethrown later in the test
728	>	* harness thread, triggering a test case failure.  Only the first
729	>	* failure is recorded; subsequent calls to this method from within
730	>	* the same test have no effect.
731	>	*/
732	>	public void threadRecordFailure(Throwable t) {
733	>	System.err.println(t);
734	>	dumpTestThreads();
735	>	threadFailure.compareAndSet(null, t);
736	>	}
737	>
738	>	public void setUp() {
739		setDelays();
740	<	threadFailed = false;
740	>	}
741	>
742	>	void tearDownFail(String format, Object... args) {
743	>	String msg = toString() + ": " + String.format(format, args);
744	>	System.err.println(msg);
745	>	dumpTestThreads();
746	>	throw new AssertionError(msg);
747	>	}
748	>
749	>	/**
750	>	* Extra checks that get done for all test cases.
751	>	*
752	>	* Triggers test case failure if any thread assertions have failed,
753	>	* by rethrowing, in the test harness thread, any exception recorded
754	>	* earlier by threadRecordFailure.
755	>	*
756	>	* Triggers test case failure if interrupt status is set in the main thread.
757	>	*/
758	>	public void tearDown() throws Exception {
759	>	Throwable t = threadFailure.getAndSet(null);
760	>	if (t != null) {
761	>	if (t instanceof Error)
762	>	throw (Error) t;
763	>	else if (t instanceof RuntimeException)
764	>	throw (RuntimeException) t;
765	>	else if (t instanceof Exception)
766	>	throw (Exception) t;
767	>	else
768	>	throw new AssertionError(t.toString(), t);
769	>	}
770	>
771	>	if (Thread.interrupted())
772	>	tearDownFail("interrupt status set in main thread");
773	>
774	>	checkForkJoinPoolThreadLeaks();
775		}
776
777		/**
778	<	* Trigger test case failure if any thread assertions have failed
778	>	* Finds missing PoolCleaners
779		*/
780	<	public void tearDown() {
781	<	assertFalse(threadFailed);
780	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
781	>	Thread[] survivors = new Thread[7];
782	>	int count = Thread.enumerate(survivors);
783	>	for (int i = 0; i < count; i++) {
784	>	Thread thread = survivors[i];
785	>	String name = thread.getName();
786	>	if (name.startsWith("ForkJoinPool-")) {
787	>	// give thread some time to terminate
788	>	thread.join(LONG_DELAY_MS);
789	>	if (thread.isAlive())
790	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
791	>	thread);
792	>	}
793	>	}
794	>
795	>	if (!ForkJoinPool.commonPool()
796	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
797	>	tearDownFail("ForkJoin common pool thread stuck");
798		}
799
800	+	/**
801	+	* Just like fail(reason), but additionally recording (using
802	+	* threadRecordFailure) any AssertionError thrown, so that the
803	+	* current testcase will fail.
804	+	*/
805		public void threadFail(String reason) {
806	<	threadFailed = true;
807	<	fail(reason);
806	>	try {
807	>	fail(reason);
808	>	} catch (AssertionError fail) {
809	>	threadRecordFailure(fail);
810	>	throw fail;
811	>	}
812		}
813
814	+	/**
815	+	* Just like assertTrue(b), but additionally recording (using
816	+	* threadRecordFailure) any AssertionError thrown, so that the
817	+	* current testcase will fail.
818	+	*/
819		public void threadAssertTrue(boolean b) {
820	<	if (!b) {
108	<	threadFailed = true;
820	>	try {
821		assertTrue(b);
822	+	} catch (AssertionError fail) {
823	+	threadRecordFailure(fail);
824	+	throw fail;
825		}
826		}
827	+
828	+	/**
829	+	* Just like assertFalse(b), but additionally recording (using
830	+	* threadRecordFailure) any AssertionError thrown, so that the
831	+	* current testcase will fail.
832	+	*/
833		public void threadAssertFalse(boolean b) {
834	<	if (b) {
114	<	threadFailed = true;
834	>	try {
835		assertFalse(b);
836	+	} catch (AssertionError fail) {
837	+	threadRecordFailure(fail);
838	+	throw fail;
839		}
840		}
841	+
842	+	/**
843	+	* Just like assertNull(x), but additionally recording (using
844	+	* threadRecordFailure) any AssertionError thrown, so that the
845	+	* current testcase will fail.
846	+	*/
847		public void threadAssertNull(Object x) {
848	<	if (x != null) {
120	<	threadFailed = true;
848	>	try {
849		assertNull(x);
850	+	} catch (AssertionError fail) {
851	+	threadRecordFailure(fail);
852	+	throw fail;
853		}
854		}
855	+
856	+	/**
857	+	* Just like assertEquals(x, y), but additionally recording (using
858	+	* threadRecordFailure) any AssertionError thrown, so that the
859	+	* current testcase will fail.
860	+	*/
861		public void threadAssertEquals(long x, long y) {
862	<	if (x != y) {
126	<	threadFailed = true;
862	>	try {
863		assertEquals(x, y);
864	+	} catch (AssertionError fail) {
865	+	threadRecordFailure(fail);
866	+	throw fail;
867		}
868		}
869	+
870	+	/**
871	+	* Just like assertEquals(x, y), but additionally recording (using
872	+	* threadRecordFailure) any AssertionError thrown, so that the
873	+	* current testcase will fail.
874	+	*/
875		public void threadAssertEquals(Object x, Object y) {
876	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
876	>	try {
877		assertEquals(x, y);
878	+	} catch (AssertionError fail) {
879	+	threadRecordFailure(fail);
880	+	throw fail;
881	+	} catch (Throwable fail) {
882	+	threadUnexpectedException(fail);
883	+	}
884	+	}
885	+
886	+	/**
887	+	* Just like assertSame(x, y), but additionally recording (using
888	+	* threadRecordFailure) any AssertionError thrown, so that the
889	+	* current testcase will fail.
890	+	*/
891	+	public void threadAssertSame(Object x, Object y) {
892	+	try {
893	+	assertSame(x, y);
894	+	} catch (AssertionError fail) {
895	+	threadRecordFailure(fail);
896	+	throw fail;
897	+	}
898	+	}
899	+
900	+	/**
901	+	* Calls threadFail with message "should throw exception".
902	+	*/
903	+	public void threadShouldThrow() {
904	+	threadFail("should throw exception");
905	+	}
906	+
907	+	/**
908	+	* Calls threadFail with message "should throw" + exceptionName.
909	+	*/
910	+	public void threadShouldThrow(String exceptionName) {
911	+	threadFail("should throw " + exceptionName);
912	+	}
913	+
914	+	/**
915	+	* Records the given exception using {@link #threadRecordFailure},
916	+	* then rethrows the exception, wrapping it in an AssertionError
917	+	* if necessary.
918	+	*/
919	+	public void threadUnexpectedException(Throwable t) {
920	+	threadRecordFailure(t);
921	+	t.printStackTrace();
922	+	if (t instanceof RuntimeException)
923	+	throw (RuntimeException) t;
924	+	else if (t instanceof Error)
925	+	throw (Error) t;
926	+	else
927	+	throw new AssertionError("unexpected exception: " + t, t);
928	+	}
929	+
930	+	/**
931	+	* Delays, via Thread.sleep, for the given millisecond delay, but
932	+	* if the sleep is shorter than specified, may re-sleep or yield
933	+	* until time elapses.  Ensures that the given time, as measured
934	+	* by System.nanoTime(), has elapsed.
935	+	*/
936	+	static void delay(long millis) throws InterruptedException {
937	+	long nanos = millis * (1000 * 1000);
938	+	final long wakeupTime = System.nanoTime() + nanos;
939	+	do {
940	+	if (millis > 0L)
941	+	Thread.sleep(millis);
942	+	else // too short to sleep
943	+	Thread.yield();
944	+	nanos = wakeupTime - System.nanoTime();
945	+	millis = nanos / (1000 * 1000);
946	+	} while (nanos >= 0L);
947	+	}
948	+
949	+	/**
950	+	* Allows use of try-with-resources with per-test thread pools.
951	+	*/
952	+	class PoolCleaner implements AutoCloseable {
953	+	private final ExecutorService pool;
954	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
955	+	public void close() { joinPool(pool); }
956	+	}
957	+
958	+	/**
959	+	* An extension of PoolCleaner that has an action to release the pool.
960	+	*/
961	+	class PoolCleanerWithReleaser extends PoolCleaner {
962	+	private final Runnable releaser;
963	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
964	+	super(pool);
965	+	this.releaser = releaser;
966	+	}
967	+	public void close() {
968	+	try {
969	+	releaser.run();
970	+	} finally {
971	+	super.close();
972	+	}
973		}
974		}
975
976	+	PoolCleaner cleaner(ExecutorService pool) {
977	+	return new PoolCleaner(pool);
978	+	}
979	+
980	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
981	+	return new PoolCleanerWithReleaser(pool, releaser);
982	+	}
983	+
984	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
985	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
986	+	}
987	+
988	+	Runnable releaser(final CountDownLatch latch) {
989	+	return new Runnable() { public void run() {
990	+	do { latch.countDown(); }
991	+	while (latch.getCount() > 0);
992	+	}};
993	+	}
994	+
995	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
996	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
997	+	}
998	+
999	+	Runnable releaser(final AtomicBoolean flag) {
1000	+	return new Runnable() { public void run() { flag.set(true); }};
1001	+	}
1002	+
1003		/**
1004	<	* Wait out termination of a thread pool or fail doing so
1004	>	* Waits out termination of a thread pool or fails doing so.
1005		*/
1006	<	public void joinPool(ExecutorService exec) {
1006	>	void joinPool(ExecutorService pool) {
1007		try {
1008	<	exec.shutdown();
1009	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1010	<	} catch(InterruptedException ie) {
1011	<	fail("unexpected exception");
1008	>	pool.shutdown();
1009	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1010	>	try {
1011	>	threadFail("ExecutorService " + pool +
1012	>	" did not terminate in a timely manner");
1013	>	} finally {
1014	>	// last resort, for the benefit of subsequent tests
1015	>	pool.shutdownNow();
1016	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1017	>	}
1018	>	}
1019	>	} catch (SecurityException ok) {
1020	>	// Allowed in case test doesn't have privs
1021	>	} catch (InterruptedException fail) {
1022	>	threadFail("Unexpected InterruptedException");
1023	>	}
1024	>	}
1025	>
1026	>	/**
1027	>	* Like Runnable, but with the freedom to throw anything.
1028	>	* junit folks had the same idea:
1029	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1030	>	*/
1031	>	interface Action { public void run() throws Throwable; }
1032	>
1033	>	/**
1034	>	* Runs all the given actions in parallel, failing if any fail.
1035	>	* Useful for running multiple variants of tests that are
1036	>	* necessarily individually slow because they must block.
1037	>	*/
1038	>	void testInParallel(Action ... actions) {
1039	>	ExecutorService pool = Executors.newCachedThreadPool();
1040	>	try (PoolCleaner cleaner = cleaner(pool)) {
1041	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1042	>	for (final Action action : actions)
1043	>	futures.add(pool.submit(new CheckedRunnable() {
1044	>	public void realRun() throws Throwable { action.run();}}));
1045	>	for (Future<?> future : futures)
1046	>	try {
1047	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1048	>	} catch (ExecutionException ex) {
1049	>	threadUnexpectedException(ex.getCause());
1050	>	} catch (Exception ex) {
1051	>	threadUnexpectedException(ex);
1052	>	}
1053	>	}
1054	>	}
1055	>
1056	>	/**
1057	>	* A debugging tool to print stack traces of most threads, as jstack does.
1058	>	* Uninteresting threads are filtered out.
1059	>	*/
1060	>	static void dumpTestThreads() {
1061	>	SecurityManager sm = System.getSecurityManager();
1062	>	if (sm != null) {
1063	>	try {
1064	>	System.setSecurityManager(null);
1065	>	} catch (SecurityException giveUp) {
1066	>	return;
1067	>	}
1068	>	}
1069	>
1070	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1071	>	System.err.println("------ stacktrace dump start ------");
1072	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1073	>	final String name = info.getThreadName();
1074	>	String lockName;
1075	>	if ("Signal Dispatcher".equals(name))
1076	>	continue;
1077	>	if ("Reference Handler".equals(name)
1078	>	&& (lockName = info.getLockName()) != null
1079	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1080	>	continue;
1081	>	if ("Finalizer".equals(name)
1082	>	&& (lockName = info.getLockName()) != null
1083	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1084	>	continue;
1085	>	if ("checkForWedgedTest".equals(name))
1086	>	continue;
1087	>	System.err.print(info);
1088		}
1089	+	System.err.println("------ stacktrace dump end ------");
1090	+
1091	+	if (sm != null) System.setSecurityManager(sm);
1092	+	}
1093	+
1094	+	/**
1095	+	* Checks that thread eventually enters the expected blocked thread state.
1096	+	*/
1097	+	void assertThreadBlocks(Thread thread, Thread.State expected) {
1098	+	// always sleep at least 1 ms, with high probability avoiding
1099	+	// transitory states
1100	+	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1101	+	try { delay(1); }
1102	+	catch (InterruptedException fail) {
1103	+	throw new AssertionError("Unexpected InterruptedException", fail);
1104	+	}
1105	+	Thread.State s = thread.getState();
1106	+	if (s == expected)
1107	+	return;
1108	+	else if (s == Thread.State.TERMINATED)
1109	+	fail("Unexpected thread termination");
1110	+	}
1111	+	fail("timed out waiting for thread to enter thread state " + expected);
1112	+	}
1113	+
1114	+	/**
1115	+	* Checks that future.get times out, with the default timeout of
1116	+	* {@code timeoutMillis()}.
1117	+	*/
1118	+	void assertFutureTimesOut(Future future) {
1119	+	assertFutureTimesOut(future, timeoutMillis());
1120	+	}
1121	+
1122	+	/**
1123	+	* Checks that future.get times out, with the given millisecond timeout.
1124	+	*/
1125	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1126	+	long startTime = System.nanoTime();
1127	+	try {
1128	+	future.get(timeoutMillis, MILLISECONDS);
1129	+	shouldThrow();
1130	+	} catch (TimeoutException success) {
1131	+	} catch (Exception fail) {
1132	+	threadUnexpectedException(fail);
1133	+	} finally { future.cancel(true); }
1134	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1135	+	}
1136	+
1137	+	/**
1138	+	* Fails with message "should throw exception".
1139	+	*/
1140	+	public void shouldThrow() {
1141	+	fail("Should throw exception");
1142		}
1143
1144	+	/**
1145	+	* Fails with message "should throw " + exceptionName.
1146	+	*/
1147	+	public void shouldThrow(String exceptionName) {
1148	+	fail("Should throw " + exceptionName);
1149	+	}
1150
1151	+	/**
1152	+	* The maximum number of consecutive spurious wakeups we should
1153	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1154	+	*/
1155	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1156
1157		/**
1158		* The number of elements to place in collections, arrays, etc.
#	Line 155 | Line 1161 | public class JSR166TestCase extends Test
1161
1162		// Some convenient Integer constants
1163
1164	<	public static final Integer zero = new Integer(0);
1165	<	public static final Integer one = new Integer(1);
1166	<	public static final Integer two = new Integer(2);
1167	<	public static final Integer three  = new Integer(3);
1164	>	public static final Integer zero  = new Integer(0);
1165	>	public static final Integer one   = new Integer(1);
1166	>	public static final Integer two   = new Integer(2);
1167	>	public static final Integer three = new Integer(3);
1168		public static final Integer four  = new Integer(4);
1169		public static final Integer five  = new Integer(5);
1170	<	public static final Integer six = new Integer(6);
1170	>	public static final Integer six   = new Integer(6);
1171		public static final Integer seven = new Integer(7);
1172		public static final Integer eight = new Integer(8);
1173	<	public static final Integer nine = new Integer(9);
1173	>	public static final Integer nine  = new Integer(9);
1174		public static final Integer m1  = new Integer(-1);
1175		public static final Integer m2  = new Integer(-2);
1176		public static final Integer m3  = new Integer(-3);
1177	<	public static final Integer m4 = new Integer(-4);
1178	<	public static final Integer m5 = new Integer(-5);
1177	>	public static final Integer m4  = new Integer(-4);
1178	>	public static final Integer m5  = new Integer(-5);
1179	>	public static final Integer m6  = new Integer(-6);
1180		public static final Integer m10 = new Integer(-10);
1181
1182	+	/**
1183	+	* Runs Runnable r with a security policy that permits precisely
1184	+	* the specified permissions.  If there is no current security
1185	+	* manager, the runnable is run twice, both with and without a
1186	+	* security manager.  We require that any security manager permit
1187	+	* getPolicy/setPolicy.
1188	+	*/
1189	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1190	+	SecurityManager sm = System.getSecurityManager();
1191	+	if (sm == null) {
1192	+	r.run();
1193	+	}
1194	+	runWithSecurityManagerWithPermissions(r, permissions);
1195	+	}
1196
1197	<	// Some convenient Runnable classes
1197	>	/**
1198	>	* Runs Runnable r with a security policy that permits precisely
1199	>	* the specified permissions.  If there is no current security
1200	>	* manager, a temporary one is set for the duration of the
1201	>	* Runnable.  We require that any security manager permit
1202	>	* getPolicy/setPolicy.
1203	>	*/
1204	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1205	>	Permission... permissions) {
1206	>	SecurityManager sm = System.getSecurityManager();
1207	>	if (sm == null) {
1208	>	Policy savedPolicy = Policy.getPolicy();
1209	>	try {
1210	>	Policy.setPolicy(permissivePolicy());
1211	>	System.setSecurityManager(new SecurityManager());
1212	>	runWithSecurityManagerWithPermissions(r, permissions);
1213	>	} finally {
1214	>	System.setSecurityManager(null);
1215	>	Policy.setPolicy(savedPolicy);
1216	>	}
1217	>	} else {
1218	>	Policy savedPolicy = Policy.getPolicy();
1219	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1220	>	Policy.setPolicy(policy);
1221
1222	<	public static class NoOpRunnable implements Runnable {
1223	<	public void run() {}
1222	>	try {
1223	>	r.run();
1224	>	} finally {
1225	>	policy.addPermission(new SecurityPermission("setPolicy"));
1226	>	Policy.setPolicy(savedPolicy);
1227	>	}
1228	>	}
1229		}
1230
1231	<	public static class NoOpCallable implements Callable {
1232	<	public Object call() { return Boolean.TRUE; }
1231	>	/**
1232	>	* Runs a runnable without any permissions.
1233	>	*/
1234	>	public void runWithoutPermissions(Runnable r) {
1235	>	runWithPermissions(r);
1236		}
1237
1238	<	public class ShortRunnable implements Runnable {
1239	<	public void run() {
1240	<	try {
1241	<	Thread.sleep(SHORT_DELAY_MS);
1238	>	/**
1239	>	* A security policy where new permissions can be dynamically added
1240	>	* or all cleared.
1241	>	*/
1242	>	public static class AdjustablePolicy extends java.security.Policy {
1243	>	Permissions perms = new Permissions();
1244	>	AdjustablePolicy(Permission... permissions) {
1245	>	for (Permission permission : permissions)
1246	>	perms.add(permission);
1247	>	}
1248	>	void addPermission(Permission perm) { perms.add(perm); }
1249	>	void clearPermissions() { perms = new Permissions(); }
1250	>	public PermissionCollection getPermissions(CodeSource cs) {
1251	>	return perms;
1252	>	}
1253	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1254	>	return perms;
1255	>	}
1256	>	public boolean implies(ProtectionDomain pd, Permission p) {
1257	>	return perms.implies(p);
1258	>	}
1259	>	public void refresh() {}
1260	>	public String toString() {
1261	>	List<Permission> ps = new ArrayList<>();
1262	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1263	>	ps.add(e.nextElement());
1264	>	return "AdjustablePolicy with permissions " + ps;
1265	>	}
1266	>	}
1267	>
1268	>	/**
1269	>	* Returns a policy containing all the permissions we ever need.
1270	>	*/
1271	>	public static Policy permissivePolicy() {
1272	>	return new AdjustablePolicy
1273	>	// Permissions j.u.c. needs directly
1274	>	(new RuntimePermission("modifyThread"),
1275	>	new RuntimePermission("getClassLoader"),
1276	>	new RuntimePermission("setContextClassLoader"),
1277	>	// Permissions needed to change permissions!
1278	>	new SecurityPermission("getPolicy"),
1279	>	new SecurityPermission("setPolicy"),
1280	>	new RuntimePermission("setSecurityManager"),
1281	>	// Permissions needed by the junit test harness
1282	>	new RuntimePermission("accessDeclaredMembers"),
1283	>	new PropertyPermission("*", "read"),
1284	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1285	>	}
1286	>
1287	>	/**
1288	>	* Sleeps until the given time has elapsed.
1289	>	* Throws AssertionError if interrupted.
1290	>	*/
1291	>	static void sleep(long millis) {
1292	>	try {
1293	>	delay(millis);
1294	>	} catch (InterruptedException fail) {
1295	>	throw new AssertionError("Unexpected InterruptedException", fail);
1296	>	}
1297	>	}
1298	>
1299	>	/**
1300	>	* Spin-waits up to the specified number of milliseconds for the given
1301	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1302	>	* @param waitingForGodot if non-null, an additional condition to satisfy
1303	>	*/
1304	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1305	>	Callable<Boolean> waitingForGodot) {
1306	>	for (long startTime = 0L;;) {
1307	>	switch (thread.getState()) {
1308	>	default: break;
1309	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1310	>	try {
1311	>	if (waitingForGodot == null || waitingForGodot.call())
1312	>	return;
1313	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1314	>	break;
1315	>	case TERMINATED:
1316	>	fail("Unexpected thread termination");
1317		}
1318	<	catch(Exception e) {
1319	<	threadFail("unexpectedException");
1318	>
1319	>	if (startTime == 0L)
1320	>	startTime = System.nanoTime();
1321	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1322	>	assertTrue(thread.isAlive());
1323	>	if (waitingForGodot == null
1324	>	|| thread.getState() == Thread.State.RUNNABLE)
1325	>	fail("timed out waiting for thread to enter wait state");
1326	>	else
1327	>	fail("timed out waiting for condition, thread state="
1328	>	+ thread.getState());
1329		}
1330	+	Thread.yield();
1331		}
1332		}
1333
1334	<	public class ShortInterruptedRunnable implements Runnable {
1335	<	public void run() {
1336	<	try {
1337	<	Thread.sleep(SHORT_DELAY_MS);
1338	<	threadFail("should throw IE");
1339	<	}
1340	<	catch(InterruptedException success) {
1334	>	/**
1335	>	* Spin-waits up to the specified number of milliseconds for the given
1336	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1337	>	*/
1338	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1339	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1340	>	}
1341	>
1342	>	/**
1343	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1344	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1345	>	*/
1346	>	void waitForThreadToEnterWaitState(Thread thread) {
1347	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1348	>	}
1349	>
1350	>	/**
1351	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1352	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1353	>	* and additionally satisfy the given condition.
1354	>	*/
1355	>	void waitForThreadToEnterWaitState(Thread thread,
1356	>	Callable<Boolean> waitingForGodot) {
1357	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1358	>	}
1359	>
1360	>	/**
1361	>	* Returns the number of milliseconds since time given by
1362	>	* startNanoTime, which must have been previously returned from a
1363	>	* call to {@link System#nanoTime()}.
1364	>	*/
1365	>	static long millisElapsedSince(long startNanoTime) {
1366	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1367	>	}
1368	>
1369	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1370	>	//         long startTime = System.nanoTime();
1371	>	//         try {
1372	>	//             r.run();
1373	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1374	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1375	>	//             throw new AssertionError("did not return promptly");
1376	>	//     }
1377	>
1378	>	//     void assertTerminatesPromptly(Runnable r) {
1379	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1380	>	//     }
1381	>
1382	>	/**
1383	>	* Checks that timed f.get() returns the expected value, and does not
1384	>	* wait for the timeout to elapse before returning.
1385	>	*/
1386	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1387	>	long startTime = System.nanoTime();
1388	>	T actual = null;
1389	>	try {
1390	>	actual = f.get(timeoutMillis, MILLISECONDS);
1391	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1392	>	assertEquals(expectedValue, actual);
1393	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1394	>	throw new AssertionError("timed get did not return promptly");
1395	>	}
1396	>
1397	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1398	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1399	>	}
1400	>
1401	>	/**
1402	>	* Returns a new started daemon Thread running the given runnable.
1403	>	*/
1404	>	Thread newStartedThread(Runnable runnable) {
1405	>	Thread t = new Thread(runnable);
1406	>	t.setDaemon(true);
1407	>	t.start();
1408	>	return t;
1409	>	}
1410	>
1411	>	/**
1412	>	* Waits for the specified time (in milliseconds) for the thread
1413	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1414	>	* the thread (in the hope that it may terminate later) and fails.
1415	>	*/
1416	>	void awaitTermination(Thread t, long timeoutMillis) {
1417	>	try {
1418	>	t.join(timeoutMillis);
1419	>	} catch (InterruptedException fail) {
1420	>	threadUnexpectedException(fail);
1421	>	} finally {
1422	>	if (t.getState() != Thread.State.TERMINATED) {
1423	>	t.interrupt();
1424	>	threadFail("timed out waiting for thread to terminate");
1425		}
1426		}
1427		}
1428
1429	<	public class SmallRunnable implements Runnable {
1430	<	public void run() {
1429	>	/**
1430	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1431	>	* terminate (using {@link Thread#join(long)}), else interrupts
1432	>	* the thread (in the hope that it may terminate later) and fails.
1433	>	*/
1434	>	void awaitTermination(Thread t) {
1435	>	awaitTermination(t, LONG_DELAY_MS);
1436	>	}
1437	>
1438	>	// Some convenient Runnable classes
1439	>
1440	>	public abstract class CheckedRunnable implements Runnable {
1441	>	protected abstract void realRun() throws Throwable;
1442	>
1443	>	public final void run() {
1444		try {
1445	<	Thread.sleep(SMALL_DELAY_MS);
1446	<	}
1447	<	catch(Exception e) {
214	<	threadFail("unexpectedException");
1445	>	realRun();
1446	>	} catch (Throwable fail) {
1447	>	threadUnexpectedException(fail);
1448		}
1449		}
1450		}
1451
1452	<	public class SmallCallable implements Callable {
1453	<	public Object call() {
1452	>	public abstract class ThreadShouldThrow extends Thread {
1453	>	protected abstract void realRun() throws Throwable;
1454	>
1455	>	final Class<?> exceptionClass;
1456	>
1457	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1458	>	this.exceptionClass = exceptionClass;
1459	>	}
1460	>
1461	>	public final void run() {
1462		try {
1463	<	Thread.sleep(SMALL_DELAY_MS);
1463	>	realRun();
1464	>	} catch (Throwable t) {
1465	>	if (! exceptionClass.isInstance(t))
1466	>	threadUnexpectedException(t);
1467	>	return;
1468		}
1469	<	catch(Exception e) {
225	<	threadFail("unexpectedException");
226	<	}
227	<	return Boolean.TRUE;
1469	>	threadShouldThrow(exceptionClass.getSimpleName());
1470		}
1471		}
1472
1473	<	public class SmallInterruptedRunnable implements Runnable {
1474	<	public void run() {
1473	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1474	>	protected abstract void realRun() throws Throwable;
1475	>
1476	>	public final void run() {
1477		try {
1478	<	Thread.sleep(SMALL_DELAY_MS);
1479	<	threadFail("should throw IE");
1478	>	realRun();
1479	>	} catch (InterruptedException success) {
1480	>	threadAssertFalse(Thread.interrupted());
1481	>	return;
1482	>	} catch (Throwable fail) {
1483	>	threadUnexpectedException(fail);
1484		}
1485	<	catch(InterruptedException success) {
1485	>	threadShouldThrow("InterruptedException");
1486	>	}
1487	>	}
1488	>
1489	>	public abstract class CheckedCallable<T> implements Callable<T> {
1490	>	protected abstract T realCall() throws Throwable;
1491	>
1492	>	public final T call() {
1493	>	try {
1494	>	return realCall();
1495	>	} catch (Throwable fail) {
1496	>	threadUnexpectedException(fail);
1497		}
1498	+	throw new AssertionError("unreached");
1499		}
1500		}
1501
1502	+	public static class NoOpRunnable implements Runnable {
1503	+	public void run() {}
1504	+	}
1505	+
1506	+	public static class NoOpCallable implements Callable {
1507	+	public Object call() { return Boolean.TRUE; }
1508	+	}
1509
1510	<	public class MediumRunnable implements Runnable {
1510	>	public static final String TEST_STRING = "a test string";
1511	>
1512	>	public static class StringTask implements Callable<String> {
1513	>	final String value;
1514	>	public StringTask() { this(TEST_STRING); }
1515	>	public StringTask(String value) { this.value = value; }
1516	>	public String call() { return value; }
1517	>	}
1518	>
1519	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1520	>	return new CheckedCallable<String>() {
1521	>	protected String realCall() {
1522	>	try {
1523	>	latch.await();
1524	>	} catch (InterruptedException quittingTime) {}
1525	>	return TEST_STRING;
1526	>	}};
1527	>	}
1528	>
1529	>	public Runnable countDowner(final CountDownLatch latch) {
1530	>	return new CheckedRunnable() {
1531	>	public void realRun() throws InterruptedException {
1532	>	latch.countDown();
1533	>	}};
1534	>	}
1535	>
1536	>	class LatchAwaiter extends CheckedRunnable {
1537	>	static final int NEW = 0;
1538	>	static final int RUNNING = 1;
1539	>	static final int DONE = 2;
1540	>	final CountDownLatch latch;
1541	>	int state = NEW;
1542	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1543	>	public void realRun() throws InterruptedException {
1544	>	state = 1;
1545	>	await(latch);
1546	>	state = 2;
1547	>	}
1548	>	}
1549	>
1550	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1551	>	return new LatchAwaiter(latch);
1552	>	}
1553	>
1554	>	public void await(CountDownLatch latch, long timeoutMillis) {
1555	>	boolean timedOut = false;
1556	>	try {
1557	>	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1558	>	} catch (Throwable fail) {
1559	>	threadUnexpectedException(fail);
1560	>	}
1561	>	if (timedOut)
1562	>	fail("timed out waiting for CountDownLatch for "
1563	>	+ (timeoutMillis/1000) + " sec");
1564	>	}
1565	>
1566	>	public void await(CountDownLatch latch) {
1567	>	await(latch, LONG_DELAY_MS);
1568	>	}
1569	>
1570	>	public void await(Semaphore semaphore) {
1571	>	boolean timedOut = false;
1572	>	try {
1573	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1574	>	} catch (Throwable fail) {
1575	>	threadUnexpectedException(fail);
1576	>	}
1577	>	if (timedOut)
1578	>	fail("timed out waiting for Semaphore for "
1579	>	+ (LONG_DELAY_MS/1000) + " sec");
1580	>	}
1581	>
1582	>	public void await(CyclicBarrier barrier) {
1583	>	try {
1584	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1585	>	} catch (Throwable fail) {
1586	>	threadUnexpectedException(fail);
1587	>	}
1588	>	}
1589	>
1590	>	//     /**
1591	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1592	>	//      */
1593	>	//     public void await(AtomicBoolean flag) {
1594	>	//         await(flag, LONG_DELAY_MS);
1595	>	//     }
1596	>
1597	>	//     /**
1598	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1599	>	//      */
1600	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1601	>	//         long startTime = System.nanoTime();
1602	>	//         while (!flag.get()) {
1603	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1604	>	//                 throw new AssertionError("timed out");
1605	>	//             Thread.yield();
1606	>	//         }
1607	>	//     }
1608	>
1609	>	public static class NPETask implements Callable<String> {
1610	>	public String call() { throw new NullPointerException(); }
1611	>	}
1612	>
1613	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1614	>	return new CheckedRunnable() {
1615	>	protected void realRun() {
1616	>	try {
1617	>	delay(timeoutMillis);
1618	>	} catch (InterruptedException ok) {}
1619	>	}};
1620	>	}
1621	>
1622	>	/**
1623	>	* For use as ThreadFactory in constructors
1624	>	*/
1625	>	public static class SimpleThreadFactory implements ThreadFactory {
1626	>	public Thread newThread(Runnable r) {
1627	>	return new Thread(r);
1628	>	}
1629	>	}
1630	>
1631	>	public interface TrackedRunnable extends Runnable {
1632	>	boolean isDone();
1633	>	}
1634	>
1635	>	public static class TrackedNoOpRunnable implements Runnable {
1636	>	public volatile boolean done = false;
1637		public void run() {
1638	+	done = true;
1639	+	}
1640	+	}
1641	+
1642	+	/**
1643	+	* Analog of CheckedRunnable for RecursiveAction
1644	+	*/
1645	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1646	+	protected abstract void realCompute() throws Throwable;
1647	+
1648	+	@Override protected final void compute() {
1649		try {
1650	<	Thread.sleep(MEDIUM_DELAY_MS);
1651	<	}
1652	<	catch(Exception e) {
249	<	threadFail("unexpectedException");
1650	>	realCompute();
1651	>	} catch (Throwable fail) {
1652	>	threadUnexpectedException(fail);
1653		}
1654		}
1655		}
1656
1657	<	public class MediumInterruptedRunnable implements Runnable {
1658	<	public void run() {
1657	>	/**
1658	>	* Analog of CheckedCallable for RecursiveTask
1659	>	*/
1660	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1661	>	protected abstract T realCompute() throws Throwable;
1662	>
1663	>	@Override protected final T compute() {
1664		try {
1665	<	Thread.sleep(MEDIUM_DELAY_MS);
1666	<	threadFail("should throw IE");
1665	>	return realCompute();
1666	>	} catch (Throwable fail) {
1667	>	threadUnexpectedException(fail);
1668		}
1669	<	catch(InterruptedException success) {
1669	>	throw new AssertionError("unreached");
1670	>	}
1671	>	}
1672	>
1673	>	/**
1674	>	* For use as RejectedExecutionHandler in constructors
1675	>	*/
1676	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1677	>	public void rejectedExecution(Runnable r,
1678	>	ThreadPoolExecutor executor) {}
1679	>	}
1680	>
1681	>	/**
1682	>	* A CyclicBarrier that uses timed await and fails with
1683	>	* AssertionErrors instead of throwing checked exceptions.
1684	>	*/
1685	>	public static class CheckedBarrier extends CyclicBarrier {
1686	>	public CheckedBarrier(int parties) { super(parties); }
1687	>
1688	>	public int await() {
1689	>	try {
1690	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1691	>	} catch (TimeoutException timedOut) {
1692	>	throw new AssertionError("timed out");
1693	>	} catch (Exception fail) {
1694	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1695		}
1696		}
1697		}
1698
1699	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1700	<	public void run() {
1699	>	void checkEmpty(BlockingQueue q) {
1700	>	try {
1701	>	assertTrue(q.isEmpty());
1702	>	assertEquals(0, q.size());
1703	>	assertNull(q.peek());
1704	>	assertNull(q.poll());
1705	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1706	>	assertEquals(q.toString(), "[]");
1707	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1708	>	assertFalse(q.iterator().hasNext());
1709	>	try {
1710	>	q.element();
1711	>	shouldThrow();
1712	>	} catch (NoSuchElementException success) {}
1713		try {
1714	<	Thread.sleep(MEDIUM_DELAY_MS);
1714	>	q.iterator().next();
1715	>	shouldThrow();
1716	>	} catch (NoSuchElementException success) {}
1717	>	try {
1718	>	q.remove();
1719	>	shouldThrow();
1720	>	} catch (NoSuchElementException success) {}
1721	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1722	>	}
1723	>
1724	>	void assertSerialEquals(Object x, Object y) {
1725	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1726	>	}
1727	>
1728	>	void assertNotSerialEquals(Object x, Object y) {
1729	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1730	>	}
1731	>
1732	>	byte[] serialBytes(Object o) {
1733	>	try {
1734	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1735	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1736	>	oos.writeObject(o);
1737	>	oos.flush();
1738	>	oos.close();
1739	>	return bos.toByteArray();
1740	>	} catch (Throwable fail) {
1741	>	threadUnexpectedException(fail);
1742	>	return new byte[0];
1743	>	}
1744	>	}
1745	>
1746	>	void assertImmutable(final Object o) {
1747	>	if (o instanceof Collection) {
1748	>	assertThrows(
1749	>	UnsupportedOperationException.class,
1750	>	new Runnable() { public void run() {
1751	>	((Collection) o).add(null);}});
1752	>	}
1753	>	}
1754	>
1755	>	@SuppressWarnings("unchecked")
1756	>	<T> T serialClone(T o) {
1757	>	T clone = null;
1758	>	try {
1759	>	ObjectInputStream ois = new ObjectInputStream
1760	>	(new ByteArrayInputStream(serialBytes(o)));
1761	>	clone = (T) ois.readObject();
1762	>	} catch (Throwable fail) {
1763	>	threadUnexpectedException(fail);
1764	>	}
1765	>	if (o == clone) assertImmutable(o);
1766	>	else assertSame(o.getClass(), clone.getClass());
1767	>	return clone;
1768	>	}
1769	>
1770	>	/**
1771	>	* A version of serialClone that leaves error handling (for
1772	>	* e.g. NotSerializableException) up to the caller.
1773	>	*/
1774	>	@SuppressWarnings("unchecked")
1775	>	<T> T serialClonePossiblyFailing(T o)
1776	>	throws ReflectiveOperationException, java.io.IOException {
1777	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1778	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1779	>	oos.writeObject(o);
1780	>	oos.flush();
1781	>	oos.close();
1782	>	ObjectInputStream ois = new ObjectInputStream
1783	>	(new ByteArrayInputStream(bos.toByteArray()));
1784	>	T clone = (T) ois.readObject();
1785	>	if (o == clone) assertImmutable(o);
1786	>	else assertSame(o.getClass(), clone.getClass());
1787	>	return clone;
1788	>	}
1789	>
1790	>	/**
1791	>	* If o implements Cloneable and has a public clone method,
1792	>	* returns a clone of o, else null.
1793	>	*/
1794	>	@SuppressWarnings("unchecked")
1795	>	<T> T cloneableClone(T o) {
1796	>	if (!(o instanceof Cloneable)) return null;
1797	>	final T clone;
1798	>	try {
1799	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1800	>	} catch (NoSuchMethodException ok) {
1801	>	return null;
1802	>	} catch (ReflectiveOperationException unexpected) {
1803	>	throw new Error(unexpected);
1804	>	}
1805	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1806	>	assertSame(o.getClass(), clone.getClass());
1807	>	return clone;
1808	>	}
1809	>
1810	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1811	>	Runnable... throwingActions) {
1812	>	for (Runnable throwingAction : throwingActions) {
1813	>	boolean threw = false;
1814	>	try { throwingAction.run(); }
1815	>	catch (Throwable t) {
1816	>	threw = true;
1817	>	if (!expectedExceptionClass.isInstance(t))
1818	>	throw new AssertionError(
1819	>	"Expected " + expectedExceptionClass.getName() +
1820	>	", got " + t.getClass().getName(),
1821	>	t);
1822	>	}
1823	>	if (!threw)
1824	>	shouldThrow(expectedExceptionClass.getName());
1825	>	}
1826	>	}
1827	>
1828	>	public void assertIteratorExhausted(Iterator<?> it) {
1829	>	try {
1830	>	it.next();
1831	>	shouldThrow();
1832	>	} catch (NoSuchElementException success) {}
1833	>	assertFalse(it.hasNext());
1834	>	}
1835	>
1836	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1837	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1838	>	}
1839	>
1840	>	public Runnable runnableThrowing(final RuntimeException ex) {
1841	>	return new Runnable() { public void run() { throw ex; }};
1842	>	}
1843	>
1844	>	/** A reusable thread pool to be shared by tests. */
1845	>	static final ExecutorService cachedThreadPool =
1846	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1847	>	1000L, MILLISECONDS,
1848	>	new SynchronousQueue<Runnable>());
1849	>
1850	>	static <T> void shuffle(T[] array) {
1851	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1852	>	}
1853	>
1854	>	/**
1855	>	* Returns the same String as would be returned by {@link
1856	>	* Object#toString}, whether or not the given object's class
1857	>	* overrides toString().
1858	>	*
1859	>	* @see System#identityHashCode
1860	>	*/
1861	>	static String identityString(Object x) {
1862	>	return x.getClass().getName()
1863	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1864	>	}
1865	>
1866	>	// --- Shared assertions for Executor tests ---
1867	>
1868	>	/**
1869	>	* Returns maximum number of tasks that can be submitted to given
1870	>	* pool (with bounded queue) before saturation (when submission
1871	>	* throws RejectedExecutionException).
1872	>	*/
1873	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1874	>	BlockingQueue<Runnable> q = pool.getQueue();
1875	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1876	>	}
1877	>
1878	>	@SuppressWarnings("FutureReturnValueIgnored")
1879	>	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1880	>	try {
1881	>	e.execute((Runnable) null);
1882	>	shouldThrow();
1883	>	} catch (NullPointerException success) {}
1884	>
1885	>	if (! (e instanceof ExecutorService)) return;
1886	>	ExecutorService es = (ExecutorService) e;
1887	>	try {
1888	>	es.submit((Runnable) null);
1889	>	shouldThrow();
1890	>	} catch (NullPointerException success) {}
1891	>	try {
1892	>	es.submit((Runnable) null, Boolean.TRUE);
1893	>	shouldThrow();
1894	>	} catch (NullPointerException success) {}
1895	>	try {
1896	>	es.submit((Callable) null);
1897	>	shouldThrow();
1898	>	} catch (NullPointerException success) {}
1899	>
1900	>	if (! (e instanceof ScheduledExecutorService)) return;
1901	>	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1902	>	try {
1903	>	ses.schedule((Runnable) null,
1904	>	randomTimeout(), randomTimeUnit());
1905	>	shouldThrow();
1906	>	} catch (NullPointerException success) {}
1907	>	try {
1908	>	ses.schedule((Callable) null,
1909	>	randomTimeout(), randomTimeUnit());
1910	>	shouldThrow();
1911	>	} catch (NullPointerException success) {}
1912	>	try {
1913	>	ses.scheduleAtFixedRate((Runnable) null,
1914	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1915	>	shouldThrow();
1916	>	} catch (NullPointerException success) {}
1917	>	try {
1918	>	ses.scheduleWithFixedDelay((Runnable) null,
1919	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1920	>	shouldThrow();
1921	>	} catch (NullPointerException success) {}
1922	>	}
1923	>
1924	>	void setRejectedExecutionHandler(
1925	>	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1926	>	p.setRejectedExecutionHandler(handler);
1927	>	assertSame(handler, p.getRejectedExecutionHandler());
1928	>	}
1929	>
1930	>	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1931	>	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1932	>	final long savedTaskCount = p.getTaskCount();
1933	>	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1934	>	final int savedQueueSize = p.getQueue().size();
1935	>	final boolean stock = (p.getClass().getClassLoader() == null);
1936	>
1937	>	Runnable r = () -> {};
1938	>	Callable<Boolean> c = () -> Boolean.TRUE;
1939	>
1940	>	class Recorder implements RejectedExecutionHandler {
1941	>	public volatile Runnable r = null;
1942	>	public volatile ThreadPoolExecutor p = null;
1943	>	public void reset() { r = null; p = null; }
1944	>	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1945	>	assertNull(this.r);
1946	>	assertNull(this.p);
1947	>	this.r = r;
1948	>	this.p = p;
1949	>	}
1950	>	}
1951	>
1952	>	// check custom handler is invoked exactly once per task
1953	>	Recorder recorder = new Recorder();
1954	>	setRejectedExecutionHandler(p, recorder);
1955	>	for (int i = 2; i--> 0; ) {
1956	>	recorder.reset();
1957	>	p.execute(r);
1958	>	if (stock && p.getClass() == ThreadPoolExecutor.class)
1959	>	assertSame(r, recorder.r);
1960	>	assertSame(p, recorder.p);
1961	>
1962	>	recorder.reset();
1963	>	assertFalse(p.submit(r).isDone());
1964	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1965	>	assertSame(p, recorder.p);
1966	>
1967	>	recorder.reset();
1968	>	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1969	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1970	>	assertSame(p, recorder.p);
1971	>
1972	>	recorder.reset();
1973	>	assertFalse(p.submit(c).isDone());
1974	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1975	>	assertSame(p, recorder.p);
1976	>
1977	>	if (p instanceof ScheduledExecutorService) {
1978	>	ScheduledExecutorService s = (ScheduledExecutorService) p;
1979	>	ScheduledFuture<?> future;
1980	>
1981	>	recorder.reset();
1982	>	future = s.schedule(r, randomTimeout(), randomTimeUnit());
1983	>	assertFalse(future.isDone());
1984	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1985	>	assertSame(p, recorder.p);
1986	>
1987	>	recorder.reset();
1988	>	future = s.schedule(c, randomTimeout(), randomTimeUnit());
1989	>	assertFalse(future.isDone());
1990	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1991	>	assertSame(p, recorder.p);
1992	>
1993	>	recorder.reset();
1994	>	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1995	>	assertFalse(future.isDone());
1996	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1997	>	assertSame(p, recorder.p);
1998	>
1999	>	recorder.reset();
2000	>	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2001	>	assertFalse(future.isDone());
2002	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2003	>	assertSame(p, recorder.p);
2004		}
2005	<	catch(InterruptedException success) {
2005	>	}
2006	>
2007	>	// Checking our custom handler above should be sufficient, but
2008	>	// we add some integration tests of standard handlers.
2009	>	final AtomicReference<Thread> thread = new AtomicReference<>();
2010	>	final Runnable setThread = () -> thread.set(Thread.currentThread());
2011	>
2012	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2013	>	try {
2014	>	p.execute(setThread);
2015	>	shouldThrow();
2016	>	} catch (RejectedExecutionException success) {}
2017	>	assertNull(thread.get());
2018	>
2019	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2020	>	p.execute(setThread);
2021	>	assertNull(thread.get());
2022	>
2023	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2024	>	p.execute(setThread);
2025	>	if (p.isShutdown())
2026	>	assertNull(thread.get());
2027	>	else
2028	>	assertSame(Thread.currentThread(), thread.get());
2029	>
2030	>	setRejectedExecutionHandler(p, savedHandler);
2031	>
2032	>	// check that pool was not perturbed by handlers
2033	>	assertEquals(savedTaskCount, p.getTaskCount());
2034	>	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2035	>	assertEquals(savedQueueSize, p.getQueue().size());
2036	>	}
2037	>
2038	>	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2039	>	assertEquals(x, y);
2040	>	assertEquals(y, x);
2041	>	assertEquals(x.isEmpty(), y.isEmpty());
2042	>	assertEquals(x.size(), y.size());
2043	>	if (x instanceof List) {
2044	>	assertEquals(x.toString(), y.toString());
2045	>	}
2046	>	if (x instanceof List || x instanceof Set) {
2047	>	assertEquals(x.hashCode(), y.hashCode());
2048	>	}
2049	>	if (x instanceof List || x instanceof Deque) {
2050	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2051	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2052	>	y.toArray(new Object[0])));
2053	>	}
2054	>	}
2055	>
2056	>	/**
2057	>	* A weaker form of assertCollectionsEquals which does not insist
2058	>	* that the two collections satisfy Object#equals(Object), since
2059	>	* they may use identity semantics as Deques do.
2060	>	*/
2061	>	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2062	>	if (x instanceof List || x instanceof Set)
2063	>	assertCollectionsEquals(x, y);
2064	>	else {
2065	>	assertEquals(x.isEmpty(), y.isEmpty());
2066	>	assertEquals(x.size(), y.size());
2067	>	assertEquals(new HashSet(x), new HashSet(y));
2068	>	if (x instanceof Deque) {
2069	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2070	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2071	>	y.toArray(new Object[0])));
2072		}
2073		}
2074		}
274	–
2075		}

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