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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.3 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.268 by jsr166, Sun Sep 22 01:59:57 2019 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.LockInfo;
53	+	import java.lang.management.ThreadInfo;
54	+	import java.lang.management.ThreadMXBean;
55	+	import java.lang.reflect.Constructor;
56	+	import java.lang.reflect.Method;
57	+	import java.lang.reflect.Modifier;
58	+	import java.security.CodeSource;
59	+	import java.security.Permission;
60	+	import java.security.PermissionCollection;
61	+	import java.security.Permissions;
62	+	import java.security.Policy;
63	+	import java.security.ProtectionDomain;
64	+	import java.security.SecurityPermission;
65	+	import java.util.ArrayList;
66	+	import java.util.Arrays;
67	+	import java.util.Collection;
68	+	import java.util.Collections;
69	+	import java.util.Date;
70	+	import java.util.Deque;
71	+	import java.util.Enumeration;
72	+	import java.util.HashSet;
73	+	import java.util.Iterator;
74	+	import java.util.List;
75	+	import java.util.NoSuchElementException;
76	+	import java.util.PropertyPermission;
77	+	import java.util.Set;
78	+	import java.util.concurrent.BlockingQueue;
79	+	import java.util.concurrent.Callable;
80	+	import java.util.concurrent.CountDownLatch;
81	+	import java.util.concurrent.CyclicBarrier;
82	+	import java.util.concurrent.ExecutionException;
83	+	import java.util.concurrent.Executor;
84	+	import java.util.concurrent.Executors;
85	+	import java.util.concurrent.ExecutorService;
86	+	import java.util.concurrent.ForkJoinPool;
87	+	import java.util.concurrent.Future;
88	+	import java.util.concurrent.FutureTask;
89	+	import java.util.concurrent.RecursiveAction;
90	+	import java.util.concurrent.RecursiveTask;
91	+	import java.util.concurrent.RejectedExecutionException;
92	+	import java.util.concurrent.RejectedExecutionHandler;
93	+	import java.util.concurrent.Semaphore;
94	+	import java.util.concurrent.ScheduledExecutorService;
95	+	import java.util.concurrent.ScheduledFuture;
96	+	import java.util.concurrent.SynchronousQueue;
97	+	import java.util.concurrent.ThreadFactory;
98	+	import java.util.concurrent.ThreadLocalRandom;
99	+	import java.util.concurrent.ThreadPoolExecutor;
100	+	import java.util.concurrent.TimeUnit;
101	+	import java.util.concurrent.TimeoutException;
102	+	import java.util.concurrent.atomic.AtomicBoolean;
103	+	import java.util.concurrent.atomic.AtomicReference;
104	+	import java.util.regex.Pattern;
105	+
106	+	import junit.framework.Test;
107	+	import junit.framework.TestCase;
108	+	import junit.framework.TestResult;
109	+	import junit.framework.TestSuite;
110
111		/**
112	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
113	<	* utility methods, as well as a simple framework for helping to make
114	<	* sure that assertions failing in generated threads cause the
115	<	* associated test that generated them to itself fail (which JUnit doe
116	<	* not otherwise arrange).  The rules for creating such tests are:
112	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
113	>	* utility methods and classes, as well as a simple framework for
114	>	* helping to make sure that assertions failing in generated threads
115	>	* cause the associated test that generated them to itself fail (which
116	>	* JUnit does not otherwise arrange).  The rules for creating such
117	>	* tests are:
118		*
119		* <ol>
120		*
121	<	* <li> All assertions in code running in generated threads must use
122	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
123	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
124	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
125	<	* particularly recommended) for other code to use these forms too.
126	<	* Only the most typically used JUnit assertion methods are defined
127	<	* this way, but enough to live with.</li>
121	>	* <li>All code not running in the main test thread (manually spawned threads
122	>	* or the common fork join pool) must be checked for failure (and completion!).
123	>	* Mechanisms that can be used to ensure this are:
124	>	*   <ol>
125	>	*   <li>Signalling via a synchronizer like AtomicInteger or CountDownLatch
126	>	*    that the task completed normally, which is checked before returning from
127	>	*    the test method in the main thread.
128	>	*   <li>Using the forms {@link #threadFail}, {@link #threadAssertTrue},
129	>	*    or {@link #threadAssertNull}, (not {@code fail}, {@code assertTrue}, etc.)
130	>	*    Only the most typically used JUnit assertion methods are defined
131	>	*    this way, but enough to live with.
132	>	*   <li>Recording failure explicitly using {@link #threadUnexpectedException}
133	>	*    or {@link #threadRecordFailure}.
134	>	*   <li>Using a wrapper like CheckedRunnable that uses one the mechanisms above.
135	>	*   </ol>
136		*
137	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
138	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
137	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
138	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
139		* them. These methods are used to clear and check for thread
140	<	* assertion failures.</li>
140	>	* assertion failures.
141		*
142	<	* <li>All delays and timeouts must use one of the constants {@link
143	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
144	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
145	<	* discriminatable from zero time, and always allows enough time for
146	<	* the small amounts of computation (creating a thread, calling a few
142	>	* <li>All delays and timeouts must use one of the constants {@code
143	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
144	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
145	>	* discriminable from zero time, and always allows enough time for the
146	>	* small amounts of computation (creating a thread, calling a few
147		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
148		* is always discriminable as larger than SHORT and smaller than
149		* MEDIUM.  And so on. These constants are set to conservative values,
150		* but even so, if there is ever any doubt, they can all be increased
151	<	* in one spot to rerun tests on slower platforms</li>
151	>	* in one spot to rerun tests on slower platforms.
152		*
153	<	* <li> All threads generated must be joined inside each test case
154	<	* method (or <tt>fail</tt> to do so) before returning from the
155	<	* method. The {@link joinPool} method can be used to do this when
156	<	* using Executors.</li>
153	>	* <li>All threads generated must be joined inside each test case
154	>	* method (or {@code fail} to do so) before returning from the
155	>	* method. The {@code joinPool} method can be used to do this when
156	>	* using Executors.
157		*
158		* </ol>
159	+	*
160	+	* <p><b>Other notes</b>
161	+	* <ul>
162	+	*
163	+	* <li>Usually, there is one testcase method per JSR166 method
164	+	* covering "normal" operation, and then as many exception-testing
165	+	* methods as there are exceptions the method can throw. Sometimes
166	+	* there are multiple tests per JSR166 method when the different
167	+	* "normal" behaviors differ significantly. And sometimes testcases
168	+	* cover multiple methods when they cannot be tested in isolation.
169	+	*
170	+	* <li>The documentation style for testcases is to provide as javadoc
171	+	* a simple sentence or two describing the property that the testcase
172	+	* method purports to test. The javadocs do not say anything about how
173	+	* the property is tested. To find out, read the code.
174	+	*
175	+	* <li>These tests are "conformance tests", and do not attempt to
176	+	* test throughput, latency, scalability or other performance factors
177	+	* (see the separate "jtreg" tests for a set intended to check these
178	+	* for the most central aspects of functionality.) So, most tests use
179	+	* the smallest sensible numbers of threads, collection sizes, etc
180	+	* needed to check basic conformance.
181	+	*
182	+	* <li>The test classes currently do not declare inclusion in
183	+	* any particular package to simplify things for people integrating
184	+	* them in TCK test suites.
185	+	*
186	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
187	+	* runs all JSR166 unit tests.
188	+	*
189	+	* </ul>
190		*/
191		public class JSR166TestCase extends TestCase {
192	+	private static final boolean useSecurityManager =
193	+	Boolean.getBoolean("jsr166.useSecurityManager");
194	+
195	+	protected static final boolean expensiveTests =
196	+	Boolean.getBoolean("jsr166.expensiveTests");
197	+
198	+	/**
199	+	* If true, also run tests that are not part of the official tck
200	+	* because they test unspecified implementation details.
201	+	*/
202	+	protected static final boolean testImplementationDetails =
203	+	Boolean.getBoolean("jsr166.testImplementationDetails");
204	+
205	+	/**
206	+	* If true, report on stdout all "slow" tests, that is, ones that
207	+	* take more than profileThreshold milliseconds to execute.
208	+	*/
209	+	private static final boolean profileTests =
210	+	Boolean.getBoolean("jsr166.profileTests");
211	+
212	+	/**
213	+	* The number of milliseconds that tests are permitted for
214	+	* execution without being reported, when profileTests is set.
215	+	*/
216	+	private static final long profileThreshold =
217	+	Long.getLong("jsr166.profileThreshold", 100);
218	+
219	+	/**
220	+	* The number of repetitions per test (for tickling rare bugs).
221	+	*/
222	+	private static final int runsPerTest =
223	+	Integer.getInteger("jsr166.runsPerTest", 1);
224	+
225	+	/**
226	+	* The number of repetitions of the test suite (for finding leaks?).
227	+	*/
228	+	private static final int suiteRuns =
229	+	Integer.getInteger("jsr166.suiteRuns", 1);
230	+
231	+	/**
232	+	* Returns the value of the system property, or NaN if not defined.
233	+	*/
234	+	private static float systemPropertyValue(String name) {
235	+	String floatString = System.getProperty(name);
236	+	if (floatString == null)
237	+	return Float.NaN;
238	+	try {
239	+	return Float.parseFloat(floatString);
240	+	} catch (NumberFormatException ex) {
241	+	throw new IllegalArgumentException(
242	+	String.format("Bad float value in system property %s=%s",
243	+	name, floatString));
244	+	}
245	+	}
246	+
247	+	private static final ThreadMXBean THREAD_MXBEAN
248	+	= ManagementFactory.getThreadMXBean();
249	+
250	+	/**
251	+	* The scaling factor to apply to standard delays used in tests.
252	+	* May be initialized from any of:
253	+	* - the "jsr166.delay.factor" system property
254	+	* - the "test.timeout.factor" system property (as used by jtreg)
255	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
256	+	* - hard-coded fuzz factor when using a known slowpoke VM
257	+	*/
258	+	private static final float delayFactor = delayFactor();
259	+
260	+	private static float delayFactor() {
261	+	float x;
262	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
263	+	return x;
264	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
265	+	return x;
266	+	String prop = System.getProperty("java.vm.version");
267	+	if (prop != null && prop.matches(".*debug.*"))
268	+	return 4.0f; // How much slower is fastdebug than product?!
269	+	return 1.0f;
270	+	}
271	+
272	+	public JSR166TestCase() { super(); }
273	+	public JSR166TestCase(String name) { super(name); }
274	+
275	+	/**
276	+	* A filter for tests to run, matching strings of the form
277	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
278	+	* Usefully combined with jsr166.runsPerTest.
279	+	*/
280	+	private static final Pattern methodFilter = methodFilter();
281	+
282	+	private static Pattern methodFilter() {
283	+	String regex = System.getProperty("jsr166.methodFilter");
284	+	return (regex == null) ? null : Pattern.compile(regex);
285	+	}
286	+
287	+	// Instrumentation to debug very rare, but very annoying hung test runs.
288	+	static volatile TestCase currentTestCase;
289	+	// static volatile int currentRun = 0;
290	+	static {
291	+	Runnable wedgedTestDetector = new Runnable() { public void run() {
292	+	// Avoid spurious reports with enormous runsPerTest.
293	+	// A single test case run should never take more than 1 second.
294	+	// But let's cap it at the high end too ...
295	+	final int timeoutMinutesMin = Math.max(runsPerTest / 60, 1)
296	+	* Math.max((int) delayFactor, 1);
297	+	final int timeoutMinutes = Math.min(15, timeoutMinutesMin);
298	+	for (TestCase lastTestCase = currentTestCase;;) {
299	+	try { MINUTES.sleep(timeoutMinutes); }
300	+	catch (InterruptedException unexpected) { break; }
301	+	if (lastTestCase == currentTestCase) {
302	+	System.err.printf(
303	+	"Looks like we're stuck running test: %s%n",
304	+	lastTestCase);
305	+	//                     System.err.printf(
306	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
307	+	//                         lastTestCase, currentRun, runsPerTest);
308	+	//                     System.err.println("availableProcessors=" +
309	+	//                         Runtime.getRuntime().availableProcessors());
310	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
311	+	dumpTestThreads();
312	+	// one stack dump is probably enough; more would be spam
313	+	break;
314	+	}
315	+	lastTestCase = currentTestCase;
316	+	}}};
317	+	Thread thread = new Thread(wedgedTestDetector, "WedgedTestDetector");
318	+	thread.setDaemon(true);
319	+	thread.start();
320	+	}
321	+
322	+	//     public static String cpuModel() {
323	+	//         try {
324	+	//             java.util.regex.Matcher matcher
325	+	//               = Pattern.compile("model name\\s*: (.*)")
326	+	//                 .matcher(new String(
327	+	//                     java.nio.file.Files.readAllBytes(
328	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
329	+	//             matcher.find();
330	+	//             return matcher.group(1);
331	+	//         } catch (Exception ex) { return null; }
332	+	//     }
333	+
334	+	public void runBare() throws Throwable {
335	+	currentTestCase = this;
336	+	if (methodFilter == null
337	+	|| methodFilter.matcher(toString()).find())
338	+	super.runBare();
339	+	}
340	+
341	+	protected void runTest() throws Throwable {
342	+	for (int i = 0; i < runsPerTest; i++) {
343	+	// currentRun = i;
344	+	if (profileTests)
345	+	runTestProfiled();
346	+	else
347	+	super.runTest();
348	+	}
349	+	}
350	+
351	+	protected void runTestProfiled() throws Throwable {
352	+	for (int i = 0; i < 2; i++) {
353	+	long startTime = System.nanoTime();
354	+	super.runTest();
355	+	long elapsedMillis = millisElapsedSince(startTime);
356	+	if (elapsedMillis < profileThreshold)
357	+	break;
358	+	// Never report first run of any test; treat it as a
359	+	// warmup run, notably to trigger all needed classloading,
360	+	if (i > 0)
361	+	System.out.printf("%s: %d%n", toString(), elapsedMillis);
362	+	}
363	+	}
364	+
365	+	/**
366	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
367	+	*/
368	+	public static void main(String[] args) {
369	+	main(suite(), args);
370	+	}
371	+
372	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
373	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
374	+	long runTime;
375	+	public void startTest(Test test) {}
376	+	protected void printHeader(long runTime) {
377	+	this.runTime = runTime; // defer printing for later
378	+	}
379	+	protected void printFooter(TestResult result) {
380	+	if (result.wasSuccessful()) {
381	+	getWriter().println("OK (" + result.runCount() + " tests)"
382	+	+ "  Time: " + elapsedTimeAsString(runTime));
383	+	} else {
384	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
385	+	super.printFooter(result);
386	+	}
387	+	}
388	+	}
389	+
390	+	/**
391	+	* Returns a TestRunner that doesn't bother with unnecessary
392	+	* fluff, like printing a "." for each test case.
393	+	*/
394	+	static junit.textui.TestRunner newPithyTestRunner() {
395	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
396	+	runner.setPrinter(new PithyResultPrinter(System.out));
397	+	return runner;
398	+	}
399	+
400	+	/**
401	+	* Runs all unit tests in the given test suite.
402	+	* Actual behavior influenced by jsr166.* system properties.
403	+	*/
404	+	static void main(Test suite, String[] args) {
405	+	if (useSecurityManager) {
406	+	System.err.println("Setting a permissive security manager");
407	+	Policy.setPolicy(permissivePolicy());
408	+	System.setSecurityManager(new SecurityManager());
409	+	}
410	+	for (int i = 0; i < suiteRuns; i++) {
411	+	TestResult result = newPithyTestRunner().doRun(suite);
412	+	if (!result.wasSuccessful())
413	+	System.exit(1);
414	+	System.gc();
415	+	System.runFinalization();
416	+	}
417	+	}
418	+
419	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
420	+	TestSuite suite = new TestSuite();
421	+	for (Object suiteOrClass : suiteOrClasses) {
422	+	if (suiteOrClass instanceof TestSuite)
423	+	suite.addTest((TestSuite) suiteOrClass);
424	+	else if (suiteOrClass instanceof Class)
425	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
426	+	else
427	+	throw new ClassCastException("not a test suite or class");
428	+	}
429	+	return suite;
430	+	}
431	+
432	+	public static void addNamedTestClasses(TestSuite suite,
433	+	String... testClassNames) {
434	+	for (String testClassName : testClassNames) {
435	+	try {
436	+	Class<?> testClass = Class.forName(testClassName);
437	+	Method m = testClass.getDeclaredMethod("suite");
438	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
439	+	} catch (ReflectiveOperationException e) {
440	+	throw new AssertionError("Missing test class", e);
441	+	}
442	+	}
443	+	}
444	+
445	+	public static final double JAVA_CLASS_VERSION;
446	+	public static final String JAVA_SPECIFICATION_VERSION;
447	+	static {
448	+	try {
449	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
450	+	new java.security.PrivilegedAction<Double>() {
451	+	public Double run() {
452	+	return Double.valueOf(System.getProperty("java.class.version"));}});
453	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
454	+	new java.security.PrivilegedAction<String>() {
455	+	public String run() {
456	+	return System.getProperty("java.specification.version");}});
457	+	} catch (Throwable t) {
458	+	throw new Error(t);
459	+	}
460	+	}
461	+
462	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
463	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
464	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
465	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
466	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
467	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
468	+	public static boolean atLeastJava12() { return JAVA_CLASS_VERSION >= 56.0; }
469	+	public static boolean atLeastJava13() { return JAVA_CLASS_VERSION >= 57.0; }
470	+	public static boolean atLeastJava14() { return JAVA_CLASS_VERSION >= 58.0; }
471	+	public static boolean atLeastJava15() { return JAVA_CLASS_VERSION >= 59.0; }
472	+	public static boolean atLeastJava16() { return JAVA_CLASS_VERSION >= 60.0; }
473	+	public static boolean atLeastJava17() { return JAVA_CLASS_VERSION >= 61.0; }
474	+
475	+	/**
476	+	* Collects all JSR166 unit tests as one suite.
477	+	*/
478	+	public static Test suite() {
479	+	// Java7+ test classes
480	+	TestSuite suite = newTestSuite(
481	+	ForkJoinPoolTest.suite(),
482	+	ForkJoinTaskTest.suite(),
483	+	RecursiveActionTest.suite(),
484	+	RecursiveTaskTest.suite(),
485	+	LinkedTransferQueueTest.suite(),
486	+	PhaserTest.suite(),
487	+	ThreadLocalRandomTest.suite(),
488	+	AbstractExecutorServiceTest.suite(),
489	+	AbstractQueueTest.suite(),
490	+	AbstractQueuedSynchronizerTest.suite(),
491	+	AbstractQueuedLongSynchronizerTest.suite(),
492	+	ArrayBlockingQueueTest.suite(),
493	+	ArrayDequeTest.suite(),
494	+	ArrayListTest.suite(),
495	+	AtomicBooleanTest.suite(),
496	+	AtomicIntegerArrayTest.suite(),
497	+	AtomicIntegerFieldUpdaterTest.suite(),
498	+	AtomicIntegerTest.suite(),
499	+	AtomicLongArrayTest.suite(),
500	+	AtomicLongFieldUpdaterTest.suite(),
501	+	AtomicLongTest.suite(),
502	+	AtomicMarkableReferenceTest.suite(),
503	+	AtomicReferenceArrayTest.suite(),
504	+	AtomicReferenceFieldUpdaterTest.suite(),
505	+	AtomicReferenceTest.suite(),
506	+	AtomicStampedReferenceTest.suite(),
507	+	ConcurrentHashMapTest.suite(),
508	+	ConcurrentLinkedDequeTest.suite(),
509	+	ConcurrentLinkedQueueTest.suite(),
510	+	ConcurrentSkipListMapTest.suite(),
511	+	ConcurrentSkipListSubMapTest.suite(),
512	+	ConcurrentSkipListSetTest.suite(),
513	+	ConcurrentSkipListSubSetTest.suite(),
514	+	CopyOnWriteArrayListTest.suite(),
515	+	CopyOnWriteArraySetTest.suite(),
516	+	CountDownLatchTest.suite(),
517	+	CountedCompleterTest.suite(),
518	+	CyclicBarrierTest.suite(),
519	+	DelayQueueTest.suite(),
520	+	EntryTest.suite(),
521	+	ExchangerTest.suite(),
522	+	ExecutorsTest.suite(),
523	+	ExecutorCompletionServiceTest.suite(),
524	+	FutureTaskTest.suite(),
525	+	HashtableTest.suite(),
526	+	LinkedBlockingDequeTest.suite(),
527	+	LinkedBlockingQueueTest.suite(),
528	+	LinkedListTest.suite(),
529	+	LockSupportTest.suite(),
530	+	PriorityBlockingQueueTest.suite(),
531	+	PriorityQueueTest.suite(),
532	+	ReentrantLockTest.suite(),
533	+	ReentrantReadWriteLockTest.suite(),
534	+	ScheduledExecutorTest.suite(),
535	+	ScheduledExecutorSubclassTest.suite(),
536	+	SemaphoreTest.suite(),
537	+	SynchronousQueueTest.suite(),
538	+	SystemTest.suite(),
539	+	ThreadLocalTest.suite(),
540	+	ThreadPoolExecutorTest.suite(),
541	+	ThreadPoolExecutorSubclassTest.suite(),
542	+	ThreadTest.suite(),
543	+	TimeUnitTest.suite(),
544	+	TreeMapTest.suite(),
545	+	TreeSetTest.suite(),
546	+	TreeSubMapTest.suite(),
547	+	TreeSubSetTest.suite(),
548	+	VectorTest.suite());
549	+
550	+	// Java8+ test classes
551	+	if (atLeastJava8()) {
552	+	String[] java8TestClassNames = {
553	+	"ArrayDeque8Test",
554	+	"Atomic8Test",
555	+	"CompletableFutureTest",
556	+	"ConcurrentHashMap8Test",
557	+	"CountedCompleter8Test",
558	+	"DoubleAccumulatorTest",
559	+	"DoubleAdderTest",
560	+	"ForkJoinPool8Test",
561	+	"ForkJoinTask8Test",
562	+	"HashMapTest",
563	+	"LinkedBlockingDeque8Test",
564	+	"LinkedBlockingQueue8Test",
565	+	"LinkedHashMapTest",
566	+	"LongAccumulatorTest",
567	+	"LongAdderTest",
568	+	"SplittableRandomTest",
569	+	"StampedLockTest",
570	+	"SubmissionPublisherTest",
571	+	"ThreadLocalRandom8Test",
572	+	"TimeUnit8Test",
573	+	};
574	+	addNamedTestClasses(suite, java8TestClassNames);
575	+	}
576	+
577	+	// Java9+ test classes
578	+	if (atLeastJava9()) {
579	+	String[] java9TestClassNames = {
580	+	"AtomicBoolean9Test",
581	+	"AtomicInteger9Test",
582	+	"AtomicIntegerArray9Test",
583	+	"AtomicLong9Test",
584	+	"AtomicLongArray9Test",
585	+	"AtomicReference9Test",
586	+	"AtomicReferenceArray9Test",
587	+	"ExecutorCompletionService9Test",
588	+	"ForkJoinPool9Test",
589	+	};
590	+	addNamedTestClasses(suite, java9TestClassNames);
591	+	}
592	+
593	+	return suite;
594	+	}
595	+
596	+	/** Returns list of junit-style test method names in given class. */
597	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
598	+	Method[] methods = testClass.getDeclaredMethods();
599	+	ArrayList<String> names = new ArrayList<>(methods.length);
600	+	for (Method method : methods) {
601	+	if (method.getName().startsWith("test")
602	+	&& Modifier.isPublic(method.getModifiers())
603	+	// method.getParameterCount() requires jdk8+
604	+	&& method.getParameterTypes().length == 0) {
605	+	names.add(method.getName());
606	+	}
607	+	}
608	+	return names;
609	+	}
610	+
611	+	/**
612	+	* Returns junit-style testSuite for the given test class, but
613	+	* parameterized by passing extra data to each test.
614	+	*/
615	+	public static <ExtraData> Test parameterizedTestSuite
616	+	(Class<? extends JSR166TestCase> testClass,
617	+	Class<ExtraData> dataClass,
618	+	ExtraData data) {
619	+	try {
620	+	TestSuite suite = new TestSuite();
621	+	Constructor c =
622	+	testClass.getDeclaredConstructor(dataClass, String.class);
623	+	for (String methodName : testMethodNames(testClass))
624	+	suite.addTest((Test) c.newInstance(data, methodName));
625	+	return suite;
626	+	} catch (ReflectiveOperationException e) {
627	+	throw new AssertionError(e);
628	+	}
629	+	}
630	+
631	+	/**
632	+	* Returns junit-style testSuite for the jdk8 extension of the
633	+	* given test class, but parameterized by passing extra data to
634	+	* each test.  Uses reflection to allow compilation in jdk7.
635	+	*/
636	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
637	+	(Class<? extends JSR166TestCase> testClass,
638	+	Class<ExtraData> dataClass,
639	+	ExtraData data) {
640	+	if (atLeastJava8()) {
641	+	String name = testClass.getName();
642	+	String name8 = name.replaceAll("Test$", "8Test");
643	+	if (name.equals(name8)) throw new AssertionError(name);
644	+	try {
645	+	return (Test)
646	+	Class.forName(name8)
647	+	.getMethod("testSuite", dataClass)
648	+	.invoke(null, data);
649	+	} catch (ReflectiveOperationException e) {
650	+	throw new AssertionError(e);
651	+	}
652	+	} else {
653	+	return new TestSuite();
654	+	}
655	+	}
656	+
657	+	// Delays for timing-dependent tests, in milliseconds.
658
659		public static long SHORT_DELAY_MS;
660		public static long SMALL_DELAY_MS;
661		public static long MEDIUM_DELAY_MS;
662		public static long LONG_DELAY_MS;
663
664	+	/**
665	+	* A delay significantly longer than LONG_DELAY_MS.
666	+	* Use this in a thread that is waited for via awaitTermination(Thread).
667	+	*/
668	+	public static long LONGER_DELAY_MS;
669	+
670	+	private static final long RANDOM_TIMEOUT;
671	+	private static final long RANDOM_EXPIRED_TIMEOUT;
672	+	private static final TimeUnit RANDOM_TIMEUNIT;
673	+	static {
674	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
675	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
676	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
677	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
678	+	TimeUnit[] timeUnits = TimeUnit.values();
679	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
680	+	}
681
682		/**
683	<	* Return the shortest timed delay. This could
684	<	* be reimplmented to use for example a Property.
685	<	*/
686	<	protected long getShortDelay() {
687	<	return 50;
683	>	* Returns a timeout for use when any value at all will do.
684	>	*/
685	>	static long randomTimeout() { return RANDOM_TIMEOUT; }
686	>
687	>	/**
688	>	* Returns a timeout that means "no waiting", i.e. not positive.
689	>	*/
690	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
691	>
692	>	/**
693	>	* Returns a random non-null TimeUnit.
694	>	*/
695	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
696	>
697	>	/**
698	>	* Returns a random boolean; a "coin flip".
699	>	*/
700	>	static boolean randomBoolean() {
701	>	return ThreadLocalRandom.current().nextBoolean();
702		}
703
704	+	/**
705	+	* Returns a random element from given choices.
706	+	*/
707	+	<T> T chooseRandomly(T... choices) {
708	+	return choices[ThreadLocalRandom.current().nextInt(choices.length)];
709	+	}
710
711		/**
712	<	* Set delays as multiples fo SHORT_DELAY.
712	>	* Returns the shortest timed delay. This can be scaled up for
713	>	* slow machines using the jsr166.delay.factor system property,
714	>	* or via jtreg's -timeoutFactor: flag.
715	>	* http://openjdk.java.net/jtreg/command-help.html
716		*/
717	<	protected  void setDelays() {
717	>	protected long getShortDelay() {
718	>	return (long) (50 * delayFactor);
719	>	}
720	>
721	>	/**
722	>	* Sets delays as multiples of SHORT_DELAY.
723	>	*/
724	>	protected void setDelays() {
725		SHORT_DELAY_MS = getShortDelay();
726	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
726	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
727		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
728	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
728	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
729	>	LONGER_DELAY_MS = 2 * LONG_DELAY_MS;
730	>	}
731	>
732	>	private static final long TIMEOUT_DELAY_MS
733	>	= (long) (12.0 * Math.cbrt(delayFactor));
734	>
735	>	/**
736	>	* Returns a timeout in milliseconds to be used in tests that verify
737	>	* that operations block or time out.  We want this to be longer
738	>	* than the OS scheduling quantum, but not too long, so don't scale
739	>	* linearly with delayFactor; we use "crazy" cube root instead.
740	>	*/
741	>	static long timeoutMillis() {
742	>	return TIMEOUT_DELAY_MS;
743	>	}
744	>
745	>	/**
746	>	* Returns a new Date instance representing a time at least
747	>	* delayMillis milliseconds in the future.
748	>	*/
749	>	Date delayedDate(long delayMillis) {
750	>	// Add 1 because currentTimeMillis is known to round into the past.
751	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
752		}
753
754		/**
755	<	* Flag set true if any threadAssert methods fail
755	>	* The first exception encountered if any threadAssertXXX method fails.
756		*/
757	<	protected volatile boolean threadFailed;
757	>	private final AtomicReference<Throwable> threadFailure
758	>	= new AtomicReference<>(null);
759
760		/**
761	<	* Initialize test to indicat that no thread assertions have failed
761	>	* Records an exception so that it can be rethrown later in the test
762	>	* harness thread, triggering a test case failure.  Only the first
763	>	* failure is recorded; subsequent calls to this method from within
764	>	* the same test have no effect.
765		*/
766	<	public void setUp() {
766	>	public void threadRecordFailure(Throwable t) {
767	>	System.err.println(t);
768	>	if (threadFailure.compareAndSet(null, t))
769	>	dumpTestThreads();
770	>	}
771	>
772	>	public void setUp() {
773		setDelays();
774	<	threadFailed = false;
774	>	}
775	>
776	>	void tearDownFail(String format, Object... args) {
777	>	String msg = toString() + ": " + String.format(format, args);
778	>	System.err.println(msg);
779	>	dumpTestThreads();
780	>	throw new AssertionError(msg);
781	>	}
782	>
783	>	/**
784	>	* Extra checks that get done for all test cases.
785	>	*
786	>	* Triggers test case failure if any thread assertions have failed,
787	>	* by rethrowing, in the test harness thread, any exception recorded
788	>	* earlier by threadRecordFailure.
789	>	*
790	>	* Triggers test case failure if interrupt status is set in the main thread.
791	>	*/
792	>	public void tearDown() throws Exception {
793	>	Throwable t = threadFailure.getAndSet(null);
794	>	if (t != null) {
795	>	if (t instanceof Error)
796	>	throw (Error) t;
797	>	else if (t instanceof RuntimeException)
798	>	throw (RuntimeException) t;
799	>	else if (t instanceof Exception)
800	>	throw (Exception) t;
801	>	else
802	>	throw new AssertionError(t.toString(), t);
803	>	}
804	>
805	>	if (Thread.interrupted())
806	>	tearDownFail("interrupt status set in main thread");
807	>
808	>	checkForkJoinPoolThreadLeaks();
809		}
810
811		/**
812	<	* Trigger test case failure if any thread assertions have failed
812	>	* Finds missing PoolCleaners
813		*/
814	<	public void tearDown() {
815	<	assertFalse(threadFailed);
814	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
815	>	Thread[] survivors = new Thread[7];
816	>	int count = Thread.enumerate(survivors);
817	>	for (int i = 0; i < count; i++) {
818	>	Thread thread = survivors[i];
819	>	String name = thread.getName();
820	>	if (name.startsWith("ForkJoinPool-")) {
821	>	// give thread some time to terminate
822	>	thread.join(LONG_DELAY_MS);
823	>	if (thread.isAlive())
824	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
825	>	thread);
826	>	}
827	>	}
828	>
829	>	if (!ForkJoinPool.commonPool()
830	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
831	>	tearDownFail("ForkJoin common pool thread stuck");
832		}
833
834	+	/**
835	+	* Just like fail(reason), but additionally recording (using
836	+	* threadRecordFailure) any AssertionError thrown, so that the
837	+	* current testcase will fail.
838	+	*/
839		public void threadFail(String reason) {
840	<	threadFailed = true;
841	<	fail(reason);
840	>	try {
841	>	fail(reason);
842	>	} catch (AssertionError fail) {
843	>	threadRecordFailure(fail);
844	>	throw fail;
845	>	}
846		}
847
848	+	/**
849	+	* Just like assertTrue(b), but additionally recording (using
850	+	* threadRecordFailure) any AssertionError thrown, so that the
851	+	* current testcase will fail.
852	+	*/
853		public void threadAssertTrue(boolean b) {
854	<	if (!b) {
108	<	threadFailed = true;
854	>	try {
855		assertTrue(b);
856	+	} catch (AssertionError fail) {
857	+	threadRecordFailure(fail);
858	+	throw fail;
859		}
860		}
861	+
862	+	/**
863	+	* Just like assertFalse(b), but additionally recording (using
864	+	* threadRecordFailure) any AssertionError thrown, so that the
865	+	* current testcase will fail.
866	+	*/
867		public void threadAssertFalse(boolean b) {
868	<	if (b) {
114	<	threadFailed = true;
868	>	try {
869		assertFalse(b);
870	+	} catch (AssertionError fail) {
871	+	threadRecordFailure(fail);
872	+	throw fail;
873		}
874		}
875	+
876	+	/**
877	+	* Just like assertNull(x), but additionally recording (using
878	+	* threadRecordFailure) any AssertionError thrown, so that the
879	+	* current testcase will fail.
880	+	*/
881		public void threadAssertNull(Object x) {
882	<	if (x != null) {
120	<	threadFailed = true;
882	>	try {
883		assertNull(x);
884	+	} catch (AssertionError fail) {
885	+	threadRecordFailure(fail);
886	+	throw fail;
887		}
888		}
889	+
890	+	/**
891	+	* Just like assertEquals(x, y), but additionally recording (using
892	+	* threadRecordFailure) any AssertionError thrown, so that the
893	+	* current testcase will fail.
894	+	*/
895		public void threadAssertEquals(long x, long y) {
896	<	if (x != y) {
126	<	threadFailed = true;
896	>	try {
897		assertEquals(x, y);
898	+	} catch (AssertionError fail) {
899	+	threadRecordFailure(fail);
900	+	throw fail;
901		}
902		}
903	+
904	+	/**
905	+	* Just like assertEquals(x, y), but additionally recording (using
906	+	* threadRecordFailure) any AssertionError thrown, so that the
907	+	* current testcase will fail.
908	+	*/
909		public void threadAssertEquals(Object x, Object y) {
910	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
910	>	try {
911		assertEquals(x, y);
912	+	} catch (AssertionError fail) {
913	+	threadRecordFailure(fail);
914	+	throw fail;
915	+	} catch (Throwable fail) {
916	+	threadUnexpectedException(fail);
917		}
918		}
919
920	+	/**
921	+	* Just like assertSame(x, y), but additionally recording (using
922	+	* threadRecordFailure) any AssertionError thrown, so that the
923	+	* current testcase will fail.
924	+	*/
925	+	public void threadAssertSame(Object x, Object y) {
926	+	try {
927	+	assertSame(x, y);
928	+	} catch (AssertionError fail) {
929	+	threadRecordFailure(fail);
930	+	throw fail;
931	+	}
932	+	}
933	+
934	+	/**
935	+	* Calls threadFail with message "should throw exception".
936	+	*/
937		public void threadShouldThrow() {
938	<	threadFailed = true;
139	<	fail("should throw exception");
938	>	threadFail("should throw exception");
939		}
940
941	<	public void threadUnexpectedException() {
942	<	threadFailed = true;
943	<	fail("Unexpected exception");
941	>	/**
942	>	* Calls threadFail with message "should throw" + exceptionName.
943	>	*/
944	>	public void threadShouldThrow(String exceptionName) {
945	>	threadFail("should throw " + exceptionName);
946		}
947
948	+	/**
949	+	* Records the given exception using {@link #threadRecordFailure},
950	+	* then rethrows the exception, wrapping it in an AssertionError
951	+	* if necessary.
952	+	*/
953	+	public void threadUnexpectedException(Throwable t) {
954	+	threadRecordFailure(t);
955	+	t.printStackTrace();
956	+	if (t instanceof RuntimeException)
957	+	throw (RuntimeException) t;
958	+	else if (t instanceof Error)
959	+	throw (Error) t;
960	+	else
961	+	throw new AssertionError("unexpected exception: " + t, t);
962	+	}
963
964		/**
965	<	* Wait out termination of a thread pool or fail doing so
965	>	* Delays, via Thread.sleep, for the given millisecond delay, but
966	>	* if the sleep is shorter than specified, may re-sleep or yield
967	>	* until time elapses.  Ensures that the given time, as measured
968	>	* by System.nanoTime(), has elapsed.
969		*/
970	<	public void joinPool(ExecutorService exec) {
970	>	static void delay(long millis) throws InterruptedException {
971	>	long nanos = millis * (1000 * 1000);
972	>	final long wakeupTime = System.nanoTime() + nanos;
973	>	do {
974	>	if (millis > 0L)
975	>	Thread.sleep(millis);
976	>	else // too short to sleep
977	>	Thread.yield();
978	>	nanos = wakeupTime - System.nanoTime();
979	>	millis = nanos / (1000 * 1000);
980	>	} while (nanos >= 0L);
981	>	}
982	>
983	>	/**
984	>	* Allows use of try-with-resources with per-test thread pools.
985	>	*/
986	>	class PoolCleaner implements AutoCloseable {
987	>	private final ExecutorService pool;
988	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
989	>	public void close() { joinPool(pool); }
990	>	}
991	>
992	>	/**
993	>	* An extension of PoolCleaner that has an action to release the pool.
994	>	*/
995	>	class PoolCleanerWithReleaser extends PoolCleaner {
996	>	private final Runnable releaser;
997	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
998	>	super(pool);
999	>	this.releaser = releaser;
1000	>	}
1001	>	public void close() {
1002	>	try {
1003	>	releaser.run();
1004	>	} finally {
1005	>	super.close();
1006	>	}
1007	>	}
1008	>	}
1009	>
1010	>	PoolCleaner cleaner(ExecutorService pool) {
1011	>	return new PoolCleaner(pool);
1012	>	}
1013	>
1014	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
1015	>	return new PoolCleanerWithReleaser(pool, releaser);
1016	>	}
1017	>
1018	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
1019	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
1020	>	}
1021	>
1022	>	Runnable releaser(final CountDownLatch latch) {
1023	>	return new Runnable() { public void run() {
1024	>	do { latch.countDown(); }
1025	>	while (latch.getCount() > 0);
1026	>	}};
1027	>	}
1028	>
1029	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1030	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
1031	>	}
1032	>
1033	>	Runnable releaser(final AtomicBoolean flag) {
1034	>	return new Runnable() { public void run() { flag.set(true); }};
1035	>	}
1036	>
1037	>	/**
1038	>	* Waits out termination of a thread pool or fails doing so.
1039	>	*/
1040	>	void joinPool(ExecutorService pool) {
1041		try {
1042	<	exec.shutdown();
1043	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1044	<	} catch(InterruptedException ie) {
1045	<	fail("Unexpected exception");
1042	>	pool.shutdown();
1043	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1044	>	try {
1045	>	threadFail("ExecutorService " + pool +
1046	>	" did not terminate in a timely manner");
1047	>	} finally {
1048	>	// last resort, for the benefit of subsequent tests
1049	>	pool.shutdownNow();
1050	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1051	>	}
1052	>	}
1053	>	} catch (SecurityException ok) {
1054	>	// Allowed in case test doesn't have privs
1055	>	} catch (InterruptedException fail) {
1056	>	threadFail("Unexpected InterruptedException");
1057	>	}
1058	>	}
1059	>
1060	>	/**
1061	>	* Like Runnable, but with the freedom to throw anything.
1062	>	* junit folks had the same idea:
1063	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1064	>	*/
1065	>	interface Action { public void run() throws Throwable; }
1066	>
1067	>	/**
1068	>	* Runs all the given actions in parallel, failing if any fail.
1069	>	* Useful for running multiple variants of tests that are
1070	>	* necessarily individually slow because they must block.
1071	>	*/
1072	>	void testInParallel(Action ... actions) {
1073	>	ExecutorService pool = Executors.newCachedThreadPool();
1074	>	try (PoolCleaner cleaner = cleaner(pool)) {
1075	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1076	>	for (final Action action : actions)
1077	>	futures.add(pool.submit(new CheckedRunnable() {
1078	>	public void realRun() throws Throwable { action.run();}}));
1079	>	for (Future<?> future : futures)
1080	>	try {
1081	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1082	>	} catch (ExecutionException ex) {
1083	>	threadUnexpectedException(ex.getCause());
1084	>	} catch (Exception ex) {
1085	>	threadUnexpectedException(ex);
1086	>	}
1087	>	}
1088	>	}
1089	>
1090	>	/** Returns true if thread info might be useful in a thread dump. */
1091	>	static boolean threadOfInterest(ThreadInfo info) {
1092	>	final String name = info.getThreadName();
1093	>	String lockName;
1094	>	if (name == null)
1095	>	return true;
1096	>	if (name.equals("Signal Dispatcher")
1097	>	|| name.equals("WedgedTestDetector"))
1098	>	return false;
1099	>	if (name.equals("Reference Handler")) {
1100	>	// Reference Handler stacktrace changed in JDK-8156500
1101	>	StackTraceElement[] stackTrace; String methodName;
1102	>	if ((stackTrace = info.getStackTrace()) != null
1103	>	&& stackTrace.length > 0
1104	>	&& (methodName = stackTrace[0].getMethodName()) != null
1105	>	&& methodName.equals("waitForReferencePendingList"))
1106	>	return false;
1107	>	// jdk8 Reference Handler stacktrace
1108	>	if ((lockName = info.getLockName()) != null
1109	>	&& lockName.startsWith("java.lang.ref"))
1110	>	return false;
1111	>	}
1112	>	if ((name.equals("Finalizer") || name.equals("Common-Cleaner"))
1113	>	&& (lockName = info.getLockName()) != null
1114	>	&& lockName.startsWith("java.lang.ref"))
1115	>	return false;
1116	>	if (name.startsWith("ForkJoinPool.commonPool-worker")
1117	>	&& (lockName = info.getLockName()) != null
1118	>	&& lockName.startsWith("java.util.concurrent.ForkJoinPool"))
1119	>	return false;
1120	>	return true;
1121	>	}
1122	>
1123	>	/**
1124	>	* A debugging tool to print stack traces of most threads, as jstack does.
1125	>	* Uninteresting threads are filtered out.
1126	>	*/
1127	>	static void dumpTestThreads() {
1128	>	SecurityManager sm = System.getSecurityManager();
1129	>	if (sm != null) {
1130	>	try {
1131	>	System.setSecurityManager(null);
1132	>	} catch (SecurityException giveUp) {
1133	>	return;
1134	>	}
1135		}
1136	+
1137	+	System.err.println("------ stacktrace dump start ------");
1138	+	for (ThreadInfo info : THREAD_MXBEAN.dumpAllThreads(true, true))
1139	+	if (threadOfInterest(info))
1140	+	System.err.print(info);
1141	+	System.err.println("------ stacktrace dump end ------");
1142	+
1143	+	if (sm != null) System.setSecurityManager(sm);
1144	+	}
1145	+
1146	+	/**
1147	+	* Checks that thread eventually enters the expected blocked thread state.
1148	+	*/
1149	+	void assertThreadBlocks(Thread thread, Thread.State expected) {
1150	+	// always sleep at least 1 ms, with high probability avoiding
1151	+	// transitory states
1152	+	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1153	+	try { delay(1); }
1154	+	catch (InterruptedException fail) {
1155	+	throw new AssertionError("Unexpected InterruptedException", fail);
1156	+	}
1157	+	Thread.State s = thread.getState();
1158	+	if (s == expected)
1159	+	return;
1160	+	else if (s == Thread.State.TERMINATED)
1161	+	fail("Unexpected thread termination");
1162	+	}
1163	+	fail("timed out waiting for thread to enter thread state " + expected);
1164	+	}
1165	+
1166	+	/**
1167	+	* Returns the thread's blocker's class name, if any, else null.
1168	+	*/
1169	+	String blockerClassName(Thread thread) {
1170	+	ThreadInfo threadInfo; LockInfo lockInfo;
1171	+	if ((threadInfo = THREAD_MXBEAN.getThreadInfo(thread.getId(), 0)) != null
1172	+	&& (lockInfo = threadInfo.getLockInfo()) != null)
1173	+	return lockInfo.getClassName();
1174	+	return null;
1175	+	}
1176	+
1177	+	/**
1178	+	* Checks that future.get times out, with the default timeout of
1179	+	* {@code timeoutMillis()}.
1180	+	*/
1181	+	void assertFutureTimesOut(Future future) {
1182	+	assertFutureTimesOut(future, timeoutMillis());
1183	+	}
1184	+
1185	+	/**
1186	+	* Checks that future.get times out, with the given millisecond timeout.
1187	+	*/
1188	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1189	+	long startTime = System.nanoTime();
1190	+	try {
1191	+	future.get(timeoutMillis, MILLISECONDS);
1192	+	shouldThrow();
1193	+	} catch (TimeoutException success) {
1194	+	} catch (Exception fail) {
1195	+	threadUnexpectedException(fail);
1196	+	} finally { future.cancel(true); }
1197	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1198		}
1199
1200	<
1200	>	/**
1201	>	* Fails with message "should throw exception".
1202	>	*/
1203		public void shouldThrow() {
1204		fail("Should throw exception");
1205		}
1206
1207	<	public void unexpectedException() {
1208	<	fail("Unexpected exception");
1207	>	/**
1208	>	* Fails with message "should throw " + exceptionName.
1209	>	*/
1210	>	public void shouldThrow(String exceptionName) {
1211	>	fail("Should throw " + exceptionName);
1212		}
1213
1214	+	/**
1215	+	* The maximum number of consecutive spurious wakeups we should
1216	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1217	+	*/
1218	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1219
1220		/**
1221		* The number of elements to place in collections, arrays, etc.
#	Line 174 | Line 1224 | public class JSR166TestCase extends Test
1224
1225		// Some convenient Integer constants
1226
1227	<	public static final Integer zero = new Integer(0);
1228	<	public static final Integer one = new Integer(1);
1229	<	public static final Integer two = new Integer(2);
1230	<	public static final Integer three  = new Integer(3);
1227	>	public static final Integer zero  = new Integer(0);
1228	>	public static final Integer one   = new Integer(1);
1229	>	public static final Integer two   = new Integer(2);
1230	>	public static final Integer three = new Integer(3);
1231		public static final Integer four  = new Integer(4);
1232		public static final Integer five  = new Integer(5);
1233	<	public static final Integer six = new Integer(6);
1233	>	public static final Integer six   = new Integer(6);
1234		public static final Integer seven = new Integer(7);
1235		public static final Integer eight = new Integer(8);
1236	<	public static final Integer nine = new Integer(9);
1236	>	public static final Integer nine  = new Integer(9);
1237		public static final Integer m1  = new Integer(-1);
1238		public static final Integer m2  = new Integer(-2);
1239		public static final Integer m3  = new Integer(-3);
1240	<	public static final Integer m4 = new Integer(-4);
1241	<	public static final Integer m5 = new Integer(-5);
1240	>	public static final Integer m4  = new Integer(-4);
1241	>	public static final Integer m5  = new Integer(-5);
1242	>	public static final Integer m6  = new Integer(-6);
1243		public static final Integer m10 = new Integer(-10);
1244
1245	+	/**
1246	+	* Runs Runnable r with a security policy that permits precisely
1247	+	* the specified permissions.  If there is no current security
1248	+	* manager, the runnable is run twice, both with and without a
1249	+	* security manager.  We require that any security manager permit
1250	+	* getPolicy/setPolicy.
1251	+	*/
1252	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1253	+	SecurityManager sm = System.getSecurityManager();
1254	+	if (sm == null) {
1255	+	r.run();
1256	+	}
1257	+	runWithSecurityManagerWithPermissions(r, permissions);
1258	+	}
1259
1260	<	// Some convenient Runnable classes
1260	>	/**
1261	>	* Runs Runnable r with a security policy that permits precisely
1262	>	* the specified permissions.  If there is no current security
1263	>	* manager, a temporary one is set for the duration of the
1264	>	* Runnable.  We require that any security manager permit
1265	>	* getPolicy/setPolicy.
1266	>	*/
1267	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1268	>	Permission... permissions) {
1269	>	SecurityManager sm = System.getSecurityManager();
1270	>	if (sm == null) {
1271	>	Policy savedPolicy = Policy.getPolicy();
1272	>	try {
1273	>	Policy.setPolicy(permissivePolicy());
1274	>	System.setSecurityManager(new SecurityManager());
1275	>	runWithSecurityManagerWithPermissions(r, permissions);
1276	>	} finally {
1277	>	System.setSecurityManager(null);
1278	>	Policy.setPolicy(savedPolicy);
1279	>	}
1280	>	} else {
1281	>	Policy savedPolicy = Policy.getPolicy();
1282	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1283	>	Policy.setPolicy(policy);
1284
1285	<	public static class NoOpRunnable implements Runnable {
1286	<	public void run() {}
1285	>	try {
1286	>	r.run();
1287	>	} finally {
1288	>	policy.addPermission(new SecurityPermission("setPolicy"));
1289	>	Policy.setPolicy(savedPolicy);
1290	>	}
1291	>	}
1292		}
1293
1294	<	public static class NoOpCallable implements Callable {
1295	<	public Object call() { return Boolean.TRUE; }
1294	>	/**
1295	>	* Runs a runnable without any permissions.
1296	>	*/
1297	>	public void runWithoutPermissions(Runnable r) {
1298	>	runWithPermissions(r);
1299		}
1300
1301	<	public class ShortRunnable implements Runnable {
1302	<	public void run() {
1303	<	try {
1304	<	Thread.sleep(SHORT_DELAY_MS);
1301	>	/**
1302	>	* A security policy where new permissions can be dynamically added
1303	>	* or all cleared.
1304	>	*/
1305	>	public static class AdjustablePolicy extends java.security.Policy {
1306	>	Permissions perms = new Permissions();
1307	>	AdjustablePolicy(Permission... permissions) {
1308	>	for (Permission permission : permissions)
1309	>	perms.add(permission);
1310	>	}
1311	>	void addPermission(Permission perm) { perms.add(perm); }
1312	>	void clearPermissions() { perms = new Permissions(); }
1313	>	public PermissionCollection getPermissions(CodeSource cs) {
1314	>	return perms;
1315	>	}
1316	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1317	>	return perms;
1318	>	}
1319	>	public boolean implies(ProtectionDomain pd, Permission p) {
1320	>	return perms.implies(p);
1321	>	}
1322	>	public void refresh() {}
1323	>	public String toString() {
1324	>	List<Permission> ps = new ArrayList<>();
1325	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1326	>	ps.add(e.nextElement());
1327	>	return "AdjustablePolicy with permissions " + ps;
1328	>	}
1329	>	}
1330	>
1331	>	/**
1332	>	* Returns a policy containing all the permissions we ever need.
1333	>	*/
1334	>	public static Policy permissivePolicy() {
1335	>	return new AdjustablePolicy
1336	>	// Permissions j.u.c. needs directly
1337	>	(new RuntimePermission("modifyThread"),
1338	>	new RuntimePermission("getClassLoader"),
1339	>	new RuntimePermission("setContextClassLoader"),
1340	>	// Permissions needed to change permissions!
1341	>	new SecurityPermission("getPolicy"),
1342	>	new SecurityPermission("setPolicy"),
1343	>	new RuntimePermission("setSecurityManager"),
1344	>	// Permissions needed by the junit test harness
1345	>	new RuntimePermission("accessDeclaredMembers"),
1346	>	new PropertyPermission("*", "read"),
1347	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1348	>	}
1349	>
1350	>	/**
1351	>	* Sleeps until the given time has elapsed.
1352	>	* Throws AssertionError if interrupted.
1353	>	*/
1354	>	static void sleep(long millis) {
1355	>	try {
1356	>	delay(millis);
1357	>	} catch (InterruptedException fail) {
1358	>	throw new AssertionError("Unexpected InterruptedException", fail);
1359	>	}
1360	>	}
1361	>
1362	>	/**
1363	>	* Spin-waits up to the specified number of milliseconds for the given
1364	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1365	>	* @param waitingForGodot if non-null, an additional condition to satisfy
1366	>	*/
1367	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1368	>	Callable<Boolean> waitingForGodot) {
1369	>	for (long startTime = 0L;;) {
1370	>	switch (thread.getState()) {
1371	>	default: break;
1372	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1373	>	try {
1374	>	if (waitingForGodot == null || waitingForGodot.call())
1375	>	return;
1376	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1377	>	break;
1378	>	case TERMINATED:
1379	>	fail("Unexpected thread termination");
1380		}
1381	<	catch(Exception e) {
1382	<	threadUnexpectedException();
1381	>
1382	>	if (startTime == 0L)
1383	>	startTime = System.nanoTime();
1384	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1385	>	assertTrue(thread.isAlive());
1386	>	if (waitingForGodot == null
1387	>	|| thread.getState() == Thread.State.RUNNABLE)
1388	>	fail("timed out waiting for thread to enter wait state");
1389	>	else
1390	>	fail("timed out waiting for condition, thread state="
1391	>	+ thread.getState());
1392		}
1393	+	Thread.yield();
1394		}
1395		}
1396
1397	<	public class ShortInterruptedRunnable implements Runnable {
1398	<	public void run() {
1397	>	/**
1398	>	* Spin-waits up to the specified number of milliseconds for the given
1399	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1400	>	*/
1401	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1402	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1403	>	}
1404	>
1405	>	/**
1406	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1407	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1408	>	*/
1409	>	void waitForThreadToEnterWaitState(Thread thread) {
1410	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1411	>	}
1412	>
1413	>	/**
1414	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1415	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1416	>	* and additionally satisfy the given condition.
1417	>	*/
1418	>	void waitForThreadToEnterWaitState(Thread thread,
1419	>	Callable<Boolean> waitingForGodot) {
1420	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1421	>	}
1422	>
1423	>	/**
1424	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the current thread to
1425	>	* be interrupted.  Clears the interrupt status before returning.
1426	>	*/
1427	>	void awaitInterrupted() {
1428	>	for (long startTime = 0L; !Thread.interrupted(); ) {
1429	>	if (startTime == 0L)
1430	>	startTime = System.nanoTime();
1431	>	else if (millisElapsedSince(startTime) > LONG_DELAY_MS)
1432	>	fail("timed out waiting for thread interrupt");
1433	>	Thread.yield();
1434	>	}
1435	>	}
1436	>
1437	>	/**
1438	>	* Returns the number of milliseconds since time given by
1439	>	* startNanoTime, which must have been previously returned from a
1440	>	* call to {@link System#nanoTime()}.
1441	>	*/
1442	>	static long millisElapsedSince(long startNanoTime) {
1443	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1444	>	}
1445	>
1446	>	/**
1447	>	* Checks that timed f.get() returns the expected value, and does not
1448	>	* wait for the timeout to elapse before returning.
1449	>	*/
1450	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1451	>	long startTime = System.nanoTime();
1452	>	T actual = null;
1453	>	try {
1454	>	actual = f.get(timeoutMillis, MILLISECONDS);
1455	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1456	>	assertEquals(expectedValue, actual);
1457	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1458	>	throw new AssertionError("timed get did not return promptly");
1459	>	}
1460	>
1461	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1462	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1463	>	}
1464	>
1465	>	/**
1466	>	* Returns a new started daemon Thread running the given runnable.
1467	>	*/
1468	>	Thread newStartedThread(Runnable runnable) {
1469	>	Thread t = new Thread(runnable);
1470	>	t.setDaemon(true);
1471	>	t.start();
1472	>	return t;
1473	>	}
1474	>
1475	>	/**
1476	>	* Returns a new started daemon Thread running the given action,
1477	>	* wrapped in a CheckedRunnable.
1478	>	*/
1479	>	Thread newStartedThread(Action action) {
1480	>	return newStartedThread(checkedRunnable(action));
1481	>	}
1482	>
1483	>	/**
1484	>	* Waits for the specified time (in milliseconds) for the thread
1485	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1486	>	* the thread (in the hope that it may terminate later) and fails.
1487	>	*/
1488	>	void awaitTermination(Thread thread, long timeoutMillis) {
1489	>	try {
1490	>	thread.join(timeoutMillis);
1491	>	} catch (InterruptedException fail) {
1492	>	threadUnexpectedException(fail);
1493	>	}
1494	>	if (thread.getState() != Thread.State.TERMINATED) {
1495	>	String detail = String.format(
1496	>	"timed out waiting for thread to terminate, thread=%s, state=%s" ,
1497	>	thread, thread.getState());
1498		try {
1499	<	Thread.sleep(SHORT_DELAY_MS);
1500	<	threadShouldThrow();
1501	<	}
1502	<	catch(InterruptedException success) {
1499	>	threadFail(detail);
1500	>	} finally {
1501	>	// Interrupt thread __after__ having reported its stack trace
1502	>	thread.interrupt();
1503		}
1504		}
1505		}
1506
1507	<	public class SmallRunnable implements Runnable {
1508	<	public void run() {
1507	>	/**
1508	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1509	>	* terminate (using {@link Thread#join(long)}), else interrupts
1510	>	* the thread (in the hope that it may terminate later) and fails.
1511	>	*/
1512	>	void awaitTermination(Thread t) {
1513	>	awaitTermination(t, LONG_DELAY_MS);
1514	>	}
1515	>
1516	>	// Some convenient Runnable classes
1517	>
1518	>	public abstract class CheckedRunnable implements Runnable {
1519	>	protected abstract void realRun() throws Throwable;
1520	>
1521	>	public final void run() {
1522		try {
1523	<	Thread.sleep(SMALL_DELAY_MS);
1524	<	}
1525	<	catch(Exception e) {
233	<	threadUnexpectedException();
1523	>	realRun();
1524	>	} catch (Throwable fail) {
1525	>	threadUnexpectedException(fail);
1526		}
1527		}
1528		}
1529
1530	<	public class SmallCallable implements Callable {
1531	<	public Object call() {
1530	>	Runnable checkedRunnable(Action action) {
1531	>	return new CheckedRunnable() {
1532	>	public void realRun() throws Throwable {
1533	>	action.run();
1534	>	}};
1535	>	}
1536	>
1537	>	public abstract class ThreadShouldThrow extends Thread {
1538	>	protected abstract void realRun() throws Throwable;
1539	>
1540	>	final Class<?> exceptionClass;
1541	>
1542	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1543	>	this.exceptionClass = exceptionClass;
1544	>	}
1545	>
1546	>	public final void run() {
1547		try {
1548	<	Thread.sleep(SMALL_DELAY_MS);
1548	>	realRun();
1549	>	} catch (Throwable t) {
1550	>	if (! exceptionClass.isInstance(t))
1551	>	threadUnexpectedException(t);
1552	>	return;
1553		}
1554	<	catch(Exception e) {
244	<	threadUnexpectedException();
245	<	}
246	<	return Boolean.TRUE;
1554	>	threadShouldThrow(exceptionClass.getSimpleName());
1555		}
1556		}
1557
1558	<	public class SmallInterruptedRunnable implements Runnable {
1559	<	public void run() {
1558	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1559	>	protected abstract void realRun() throws Throwable;
1560	>
1561	>	public final void run() {
1562		try {
1563	<	Thread.sleep(SMALL_DELAY_MS);
1564	<	threadShouldThrow();
1563	>	realRun();
1564	>	} catch (InterruptedException success) {
1565	>	threadAssertFalse(Thread.interrupted());
1566	>	return;
1567	>	} catch (Throwable fail) {
1568	>	threadUnexpectedException(fail);
1569		}
1570	<	catch(InterruptedException success) {
1570	>	threadShouldThrow("InterruptedException");
1571	>	}
1572	>	}
1573	>
1574	>	public abstract class CheckedCallable<T> implements Callable<T> {
1575	>	protected abstract T realCall() throws Throwable;
1576	>
1577	>	public final T call() {
1578	>	try {
1579	>	return realCall();
1580	>	} catch (Throwable fail) {
1581	>	threadUnexpectedException(fail);
1582		}
1583	+	throw new AssertionError("unreached");
1584		}
1585		}
1586
1587	+	public static class NoOpRunnable implements Runnable {
1588	+	public void run() {}
1589	+	}
1590
1591	<	public class MediumRunnable implements Runnable {
1591	>	public static class NoOpCallable implements Callable {
1592	>	public Object call() { return Boolean.TRUE; }
1593	>	}
1594	>
1595	>	public static final String TEST_STRING = "a test string";
1596	>
1597	>	public static class StringTask implements Callable<String> {
1598	>	final String value;
1599	>	public StringTask() { this(TEST_STRING); }
1600	>	public StringTask(String value) { this.value = value; }
1601	>	public String call() { return value; }
1602	>	}
1603	>
1604	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1605	>	return new CheckedCallable<String>() {
1606	>	protected String realCall() {
1607	>	try {
1608	>	latch.await();
1609	>	} catch (InterruptedException quittingTime) {}
1610	>	return TEST_STRING;
1611	>	}};
1612	>	}
1613	>
1614	>	public Runnable countDowner(final CountDownLatch latch) {
1615	>	return new CheckedRunnable() {
1616	>	public void realRun() throws InterruptedException {
1617	>	latch.countDown();
1618	>	}};
1619	>	}
1620	>
1621	>	class LatchAwaiter extends CheckedRunnable {
1622	>	static final int NEW = 0;
1623	>	static final int RUNNING = 1;
1624	>	static final int DONE = 2;
1625	>	final CountDownLatch latch;
1626	>	int state = NEW;
1627	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1628	>	public void realRun() throws InterruptedException {
1629	>	state = 1;
1630	>	await(latch);
1631	>	state = 2;
1632	>	}
1633	>	}
1634	>
1635	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1636	>	return new LatchAwaiter(latch);
1637	>	}
1638	>
1639	>	public void await(CountDownLatch latch, long timeoutMillis) {
1640	>	boolean timedOut = false;
1641	>	try {
1642	>	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1643	>	} catch (Throwable fail) {
1644	>	threadUnexpectedException(fail);
1645	>	}
1646	>	if (timedOut)
1647	>	fail("timed out waiting for CountDownLatch for "
1648	>	+ (timeoutMillis/1000) + " sec");
1649	>	}
1650	>
1651	>	public void await(CountDownLatch latch) {
1652	>	await(latch, LONG_DELAY_MS);
1653	>	}
1654	>
1655	>	public void await(Semaphore semaphore) {
1656	>	boolean timedOut = false;
1657	>	try {
1658	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1659	>	} catch (Throwable fail) {
1660	>	threadUnexpectedException(fail);
1661	>	}
1662	>	if (timedOut)
1663	>	fail("timed out waiting for Semaphore for "
1664	>	+ (LONG_DELAY_MS/1000) + " sec");
1665	>	}
1666	>
1667	>	public void await(CyclicBarrier barrier) {
1668	>	try {
1669	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1670	>	} catch (Throwable fail) {
1671	>	threadUnexpectedException(fail);
1672	>	}
1673	>	}
1674	>
1675	>	//     /**
1676	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1677	>	//      */
1678	>	//     public void await(AtomicBoolean flag) {
1679	>	//         await(flag, LONG_DELAY_MS);
1680	>	//     }
1681	>
1682	>	//     /**
1683	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1684	>	//      */
1685	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1686	>	//         long startTime = System.nanoTime();
1687	>	//         while (!flag.get()) {
1688	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1689	>	//                 throw new AssertionError("timed out");
1690	>	//             Thread.yield();
1691	>	//         }
1692	>	//     }
1693	>
1694	>	public static class NPETask implements Callable<String> {
1695	>	public String call() { throw new NullPointerException(); }
1696	>	}
1697	>
1698	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1699	>	return new CheckedRunnable() {
1700	>	protected void realRun() {
1701	>	try {
1702	>	delay(timeoutMillis);
1703	>	} catch (InterruptedException ok) {}
1704	>	}};
1705	>	}
1706	>
1707	>	/**
1708	>	* For use as ThreadFactory in constructors
1709	>	*/
1710	>	public static class SimpleThreadFactory implements ThreadFactory {
1711	>	public Thread newThread(Runnable r) {
1712	>	return new Thread(r);
1713	>	}
1714	>	}
1715	>
1716	>	public interface TrackedRunnable extends Runnable {
1717	>	boolean isDone();
1718	>	}
1719	>
1720	>	public static class TrackedNoOpRunnable implements Runnable {
1721	>	public volatile boolean done = false;
1722		public void run() {
1723	+	done = true;
1724	+	}
1725	+	}
1726	+
1727	+	/**
1728	+	* Analog of CheckedRunnable for RecursiveAction
1729	+	*/
1730	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1731	+	protected abstract void realCompute() throws Throwable;
1732	+
1733	+	@Override protected final void compute() {
1734		try {
1735	<	Thread.sleep(MEDIUM_DELAY_MS);
1736	<	}
1737	<	catch(Exception e) {
268	<	threadUnexpectedException();
1735	>	realCompute();
1736	>	} catch (Throwable fail) {
1737	>	threadUnexpectedException(fail);
1738		}
1739		}
1740		}
1741
1742	<	public class MediumInterruptedRunnable implements Runnable {
1743	<	public void run() {
1742	>	/**
1743	>	* Analog of CheckedCallable for RecursiveTask
1744	>	*/
1745	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1746	>	protected abstract T realCompute() throws Throwable;
1747	>
1748	>	@Override protected final T compute() {
1749		try {
1750	<	Thread.sleep(MEDIUM_DELAY_MS);
1751	<	threadShouldThrow();
1750	>	return realCompute();
1751	>	} catch (Throwable fail) {
1752	>	threadUnexpectedException(fail);
1753		}
1754	<	catch(InterruptedException success) {
1754	>	throw new AssertionError("unreached");
1755	>	}
1756	>	}
1757	>
1758	>	/**
1759	>	* For use as RejectedExecutionHandler in constructors
1760	>	*/
1761	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1762	>	public void rejectedExecution(Runnable r,
1763	>	ThreadPoolExecutor executor) {}
1764	>	}
1765	>
1766	>	/**
1767	>	* A CyclicBarrier that uses timed await and fails with
1768	>	* AssertionErrors instead of throwing checked exceptions.
1769	>	*/
1770	>	public static class CheckedBarrier extends CyclicBarrier {
1771	>	public CheckedBarrier(int parties) { super(parties); }
1772	>
1773	>	public int await() {
1774	>	try {
1775	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1776	>	} catch (TimeoutException timedOut) {
1777	>	throw new AssertionError("timed out");
1778	>	} catch (Exception fail) {
1779	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1780		}
1781		}
1782		}
1783
1784	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1785	<	public void run() {
1784	>	void checkEmpty(BlockingQueue q) {
1785	>	try {
1786	>	assertTrue(q.isEmpty());
1787	>	assertEquals(0, q.size());
1788	>	assertNull(q.peek());
1789	>	assertNull(q.poll());
1790	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1791	>	assertEquals(q.toString(), "[]");
1792	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1793	>	assertFalse(q.iterator().hasNext());
1794	>	try {
1795	>	q.element();
1796	>	shouldThrow();
1797	>	} catch (NoSuchElementException success) {}
1798		try {
1799	<	Thread.sleep(MEDIUM_DELAY_MS);
1799	>	q.iterator().next();
1800	>	shouldThrow();
1801	>	} catch (NoSuchElementException success) {}
1802	>	try {
1803	>	q.remove();
1804	>	shouldThrow();
1805	>	} catch (NoSuchElementException success) {}
1806	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1807	>	}
1808	>
1809	>	void assertSerialEquals(Object x, Object y) {
1810	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1811	>	}
1812	>
1813	>	void assertNotSerialEquals(Object x, Object y) {
1814	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1815	>	}
1816	>
1817	>	byte[] serialBytes(Object o) {
1818	>	try {
1819	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1820	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1821	>	oos.writeObject(o);
1822	>	oos.flush();
1823	>	oos.close();
1824	>	return bos.toByteArray();
1825	>	} catch (Throwable fail) {
1826	>	threadUnexpectedException(fail);
1827	>	return new byte[0];
1828	>	}
1829	>	}
1830	>
1831	>	void assertImmutable(Object o) {
1832	>	if (o instanceof Collection) {
1833	>	assertThrows(
1834	>	UnsupportedOperationException.class,
1835	>	() -> ((Collection) o).add(null));
1836	>	}
1837	>	}
1838	>
1839	>	@SuppressWarnings("unchecked")
1840	>	<T> T serialClone(T o) {
1841	>	T clone = null;
1842	>	try {
1843	>	ObjectInputStream ois = new ObjectInputStream
1844	>	(new ByteArrayInputStream(serialBytes(o)));
1845	>	clone = (T) ois.readObject();
1846	>	} catch (Throwable fail) {
1847	>	threadUnexpectedException(fail);
1848	>	}
1849	>	if (o == clone) assertImmutable(o);
1850	>	else assertSame(o.getClass(), clone.getClass());
1851	>	return clone;
1852	>	}
1853	>
1854	>	/**
1855	>	* A version of serialClone that leaves error handling (for
1856	>	* e.g. NotSerializableException) up to the caller.
1857	>	*/
1858	>	@SuppressWarnings("unchecked")
1859	>	<T> T serialClonePossiblyFailing(T o)
1860	>	throws ReflectiveOperationException, java.io.IOException {
1861	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1862	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1863	>	oos.writeObject(o);
1864	>	oos.flush();
1865	>	oos.close();
1866	>	ObjectInputStream ois = new ObjectInputStream
1867	>	(new ByteArrayInputStream(bos.toByteArray()));
1868	>	T clone = (T) ois.readObject();
1869	>	if (o == clone) assertImmutable(o);
1870	>	else assertSame(o.getClass(), clone.getClass());
1871	>	return clone;
1872	>	}
1873	>
1874	>	/**
1875	>	* If o implements Cloneable and has a public clone method,
1876	>	* returns a clone of o, else null.
1877	>	*/
1878	>	@SuppressWarnings("unchecked")
1879	>	<T> T cloneableClone(T o) {
1880	>	if (!(o instanceof Cloneable)) return null;
1881	>	final T clone;
1882	>	try {
1883	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1884	>	} catch (NoSuchMethodException ok) {
1885	>	return null;
1886	>	} catch (ReflectiveOperationException unexpected) {
1887	>	throw new Error(unexpected);
1888	>	}
1889	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1890	>	assertSame(o.getClass(), clone.getClass());
1891	>	return clone;
1892	>	}
1893	>
1894	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1895	>	Action... throwingActions) {
1896	>	for (Action throwingAction : throwingActions) {
1897	>	boolean threw = false;
1898	>	try { throwingAction.run(); }
1899	>	catch (Throwable t) {
1900	>	threw = true;
1901	>	if (!expectedExceptionClass.isInstance(t))
1902	>	throw new AssertionError(
1903	>	"Expected " + expectedExceptionClass.getName() +
1904	>	", got " + t.getClass().getName(),
1905	>	t);
1906	>	}
1907	>	if (!threw)
1908	>	shouldThrow(expectedExceptionClass.getName());
1909	>	}
1910	>	}
1911	>
1912	>	public void assertIteratorExhausted(Iterator<?> it) {
1913	>	try {
1914	>	it.next();
1915	>	shouldThrow();
1916	>	} catch (NoSuchElementException success) {}
1917	>	assertFalse(it.hasNext());
1918	>	}
1919	>
1920	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1921	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1922	>	}
1923	>
1924	>	public Runnable runnableThrowing(final RuntimeException ex) {
1925	>	return new Runnable() { public void run() { throw ex; }};
1926	>	}
1927	>
1928	>	/** A reusable thread pool to be shared by tests. */
1929	>	static final ExecutorService cachedThreadPool =
1930	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1931	>	1000L, MILLISECONDS,
1932	>	new SynchronousQueue<Runnable>());
1933	>
1934	>	static <T> void shuffle(T[] array) {
1935	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1936	>	}
1937	>
1938	>	/**
1939	>	* Returns the same String as would be returned by {@link
1940	>	* Object#toString}, whether or not the given object's class
1941	>	* overrides toString().
1942	>	*
1943	>	* @see System#identityHashCode
1944	>	*/
1945	>	static String identityString(Object x) {
1946	>	return x.getClass().getName()
1947	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1948	>	}
1949	>
1950	>	// --- Shared assertions for Executor tests ---
1951	>
1952	>	/**
1953	>	* Returns maximum number of tasks that can be submitted to given
1954	>	* pool (with bounded queue) before saturation (when submission
1955	>	* throws RejectedExecutionException).
1956	>	*/
1957	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1958	>	BlockingQueue<Runnable> q = pool.getQueue();
1959	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1960	>	}
1961	>
1962	>	@SuppressWarnings("FutureReturnValueIgnored")
1963	>	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1964	>	try {
1965	>	e.execute((Runnable) null);
1966	>	shouldThrow();
1967	>	} catch (NullPointerException success) {}
1968	>
1969	>	if (! (e instanceof ExecutorService)) return;
1970	>	ExecutorService es = (ExecutorService) e;
1971	>	try {
1972	>	es.submit((Runnable) null);
1973	>	shouldThrow();
1974	>	} catch (NullPointerException success) {}
1975	>	try {
1976	>	es.submit((Runnable) null, Boolean.TRUE);
1977	>	shouldThrow();
1978	>	} catch (NullPointerException success) {}
1979	>	try {
1980	>	es.submit((Callable) null);
1981	>	shouldThrow();
1982	>	} catch (NullPointerException success) {}
1983	>
1984	>	if (! (e instanceof ScheduledExecutorService)) return;
1985	>	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1986	>	try {
1987	>	ses.schedule((Runnable) null,
1988	>	randomTimeout(), randomTimeUnit());
1989	>	shouldThrow();
1990	>	} catch (NullPointerException success) {}
1991	>	try {
1992	>	ses.schedule((Callable) null,
1993	>	randomTimeout(), randomTimeUnit());
1994	>	shouldThrow();
1995	>	} catch (NullPointerException success) {}
1996	>	try {
1997	>	ses.scheduleAtFixedRate((Runnable) null,
1998	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1999	>	shouldThrow();
2000	>	} catch (NullPointerException success) {}
2001	>	try {
2002	>	ses.scheduleWithFixedDelay((Runnable) null,
2003	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2004	>	shouldThrow();
2005	>	} catch (NullPointerException success) {}
2006	>	}
2007	>
2008	>	void setRejectedExecutionHandler(
2009	>	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
2010	>	p.setRejectedExecutionHandler(handler);
2011	>	assertSame(handler, p.getRejectedExecutionHandler());
2012	>	}
2013	>
2014	>	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
2015	>	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
2016	>	final long savedTaskCount = p.getTaskCount();
2017	>	final long savedCompletedTaskCount = p.getCompletedTaskCount();
2018	>	final int savedQueueSize = p.getQueue().size();
2019	>	final boolean stock = (p.getClass().getClassLoader() == null);
2020	>
2021	>	Runnable r = () -> {};
2022	>	Callable<Boolean> c = () -> Boolean.TRUE;
2023	>
2024	>	class Recorder implements RejectedExecutionHandler {
2025	>	public volatile Runnable r = null;
2026	>	public volatile ThreadPoolExecutor p = null;
2027	>	public void reset() { r = null; p = null; }
2028	>	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2029	>	assertNull(this.r);
2030	>	assertNull(this.p);
2031	>	this.r = r;
2032	>	this.p = p;
2033	>	}
2034	>	}
2035	>
2036	>	// check custom handler is invoked exactly once per task
2037	>	Recorder recorder = new Recorder();
2038	>	setRejectedExecutionHandler(p, recorder);
2039	>	for (int i = 2; i--> 0; ) {
2040	>	recorder.reset();
2041	>	p.execute(r);
2042	>	if (stock && p.getClass() == ThreadPoolExecutor.class)
2043	>	assertSame(r, recorder.r);
2044	>	assertSame(p, recorder.p);
2045	>
2046	>	recorder.reset();
2047	>	assertFalse(p.submit(r).isDone());
2048	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2049	>	assertSame(p, recorder.p);
2050	>
2051	>	recorder.reset();
2052	>	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2053	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2054	>	assertSame(p, recorder.p);
2055	>
2056	>	recorder.reset();
2057	>	assertFalse(p.submit(c).isDone());
2058	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2059	>	assertSame(p, recorder.p);
2060	>
2061	>	if (p instanceof ScheduledExecutorService) {
2062	>	ScheduledExecutorService s = (ScheduledExecutorService) p;
2063	>	ScheduledFuture<?> future;
2064	>
2065	>	recorder.reset();
2066	>	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2067	>	assertFalse(future.isDone());
2068	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2069	>	assertSame(p, recorder.p);
2070	>
2071	>	recorder.reset();
2072	>	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2073	>	assertFalse(future.isDone());
2074	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2075	>	assertSame(p, recorder.p);
2076	>
2077	>	recorder.reset();
2078	>	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2079	>	assertFalse(future.isDone());
2080	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2081	>	assertSame(p, recorder.p);
2082	>
2083	>	recorder.reset();
2084	>	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2085	>	assertFalse(future.isDone());
2086	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2087	>	assertSame(p, recorder.p);
2088		}
2089	<	catch(InterruptedException success) {
2089	>	}
2090	>
2091	>	// Checking our custom handler above should be sufficient, but
2092	>	// we add some integration tests of standard handlers.
2093	>	final AtomicReference<Thread> thread = new AtomicReference<>();
2094	>	final Runnable setThread = () -> thread.set(Thread.currentThread());
2095	>
2096	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2097	>	try {
2098	>	p.execute(setThread);
2099	>	shouldThrow();
2100	>	} catch (RejectedExecutionException success) {}
2101	>	assertNull(thread.get());
2102	>
2103	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2104	>	p.execute(setThread);
2105	>	assertNull(thread.get());
2106	>
2107	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2108	>	p.execute(setThread);
2109	>	if (p.isShutdown())
2110	>	assertNull(thread.get());
2111	>	else
2112	>	assertSame(Thread.currentThread(), thread.get());
2113	>
2114	>	setRejectedExecutionHandler(p, savedHandler);
2115	>
2116	>	// check that pool was not perturbed by handlers
2117	>	assertEquals(savedTaskCount, p.getTaskCount());
2118	>	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2119	>	assertEquals(savedQueueSize, p.getQueue().size());
2120	>	}
2121	>
2122	>	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2123	>	assertEquals(x, y);
2124	>	assertEquals(y, x);
2125	>	assertEquals(x.isEmpty(), y.isEmpty());
2126	>	assertEquals(x.size(), y.size());
2127	>	if (x instanceof List) {
2128	>	assertEquals(x.toString(), y.toString());
2129	>	}
2130	>	if (x instanceof List || x instanceof Set) {
2131	>	assertEquals(x.hashCode(), y.hashCode());
2132	>	}
2133	>	if (x instanceof List || x instanceof Deque) {
2134	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2135	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2136	>	y.toArray(new Object[0])));
2137	>	}
2138	>	}
2139	>
2140	>	/**
2141	>	* A weaker form of assertCollectionsEquals which does not insist
2142	>	* that the two collections satisfy Object#equals(Object), since
2143	>	* they may use identity semantics as Deques do.
2144	>	*/
2145	>	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2146	>	if (x instanceof List || x instanceof Set)
2147	>	assertCollectionsEquals(x, y);
2148	>	else {
2149	>	assertEquals(x.isEmpty(), y.isEmpty());
2150	>	assertEquals(x.size(), y.size());
2151	>	assertEquals(new HashSet(x), new HashSet(y));
2152	>	if (x instanceof Deque) {
2153	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2154	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2155	>	y.toArray(new Object[0])));
2156		}
2157		}
2158		}
293	–
2159		}

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