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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.1 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.256 by jsr166, Sun Aug 11 22:29:26 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.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	<	* (100, 500, 1000, 5000 MS) but even so, if there is ever any doubt,
150	<	* they can all be increased in one spot to rerun tests on slower
151	<	* platforms</li>
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
51	<	* using Executors.</li>
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.
151	>	*
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 timeoutMinutesMin = Math.max(runsPerTest / 60, 1)
292	+	* Math.max((int) delayFactor, 1);
293	+	final int timeoutMinutes = Math.min(15, timeoutMinutesMin);
294	+	for (TestCase lastTestCase = currentTestCase;;) {
295	+	try { MINUTES.sleep(timeoutMinutes); }
296	+	catch (InterruptedException unexpected) { break; }
297	+	if (lastTestCase == currentTestCase) {
298	+	System.err.printf(
299	+	"Looks like we're stuck running test: %s%n",
300	+	lastTestCase);
301	+	//                     System.err.printf(
302	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
303	+	//                         lastTestCase, currentRun, runsPerTest);
304	+	//                     System.err.println("availableProcessors=" +
305	+	//                         Runtime.getRuntime().availableProcessors());
306	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
307	+	dumpTestThreads();
308	+	// one stack dump is probably enough; more would be spam
309	+	break;
310	+	}
311	+	lastTestCase = currentTestCase;
312	+	}}};
313	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
314	+	thread.setDaemon(true);
315	+	thread.start();
316	+	}
317	+
318	+	//     public static String cpuModel() {
319	+	//         try {
320	+	//             java.util.regex.Matcher matcher
321	+	//               = Pattern.compile("model name\\s*: (.*)")
322	+	//                 .matcher(new String(
323	+	//                     java.nio.file.Files.readAllBytes(
324	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
325	+	//             matcher.find();
326	+	//             return matcher.group(1);
327	+	//         } catch (Exception ex) { return null; }
328	+	//     }
329	+
330	+	public void runBare() throws Throwable {
331	+	currentTestCase = this;
332	+	if (methodFilter == null
333	+	|| methodFilter.matcher(toString()).find())
334	+	super.runBare();
335	+	}
336	+
337	+	protected void runTest() throws Throwable {
338	+	for (int i = 0; i < runsPerTest; i++) {
339	+	// currentRun = i;
340	+	if (profileTests)
341	+	runTestProfiled();
342	+	else
343	+	super.runTest();
344	+	}
345	+	}
346	+
347	+	protected void runTestProfiled() throws Throwable {
348	+	for (int i = 0; i < 2; i++) {
349	+	long startTime = System.nanoTime();
350	+	super.runTest();
351	+	long elapsedMillis = millisElapsedSince(startTime);
352	+	if (elapsedMillis < profileThreshold)
353	+	break;
354	+	// Never report first run of any test; treat it as a
355	+	// warmup run, notably to trigger all needed classloading,
356	+	if (i > 0)
357	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
358	+	}
359	+	}
360	+
361	+	/**
362	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
363	+	*/
364	+	public static void main(String[] args) {
365	+	main(suite(), args);
366	+	}
367	+
368	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
369	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
370	+	long runTime;
371	+	public void startTest(Test test) {}
372	+	protected void printHeader(long runTime) {
373	+	this.runTime = runTime; // defer printing for later
374	+	}
375	+	protected void printFooter(TestResult result) {
376	+	if (result.wasSuccessful()) {
377	+	getWriter().println("OK (" + result.runCount() + " tests)"
378	+	+ "  Time: " + elapsedTimeAsString(runTime));
379	+	} else {
380	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
381	+	super.printFooter(result);
382	+	}
383	+	}
384	+	}
385	+
386	+	/**
387	+	* Returns a TestRunner that doesn't bother with unnecessary
388	+	* fluff, like printing a "." for each test case.
389	+	*/
390	+	static junit.textui.TestRunner newPithyTestRunner() {
391	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
392	+	runner.setPrinter(new PithyResultPrinter(System.out));
393	+	return runner;
394	+	}
395
396		/**
397	<	* Flag set true if any threadAssert methods fail
397	>	* Runs all unit tests in the given test suite.
398	>	* Actual behavior influenced by jsr166.* system properties.
399		*/
400	<	protected volatile boolean threadFailed;
400	>	static void main(Test suite, String[] args) {
401	>	if (useSecurityManager) {
402	>	System.err.println("Setting a permissive security manager");
403	>	Policy.setPolicy(permissivePolicy());
404	>	System.setSecurityManager(new SecurityManager());
405	>	}
406	>	for (int i = 0; i < suiteRuns; i++) {
407	>	TestResult result = newPithyTestRunner().doRun(suite);
408	>	if (!result.wasSuccessful())
409	>	System.exit(1);
410	>	System.gc();
411	>	System.runFinalization();
412	>	}
413	>	}
414	>
415	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
416	>	TestSuite suite = new TestSuite();
417	>	for (Object suiteOrClass : suiteOrClasses) {
418	>	if (suiteOrClass instanceof TestSuite)
419	>	suite.addTest((TestSuite) suiteOrClass);
420	>	else if (suiteOrClass instanceof Class)
421	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
422	>	else
423	>	throw new ClassCastException("not a test suite or class");
424	>	}
425	>	return suite;
426	>	}
427	>
428	>	public static void addNamedTestClasses(TestSuite suite,
429	>	String... testClassNames) {
430	>	for (String testClassName : testClassNames) {
431	>	try {
432	>	Class<?> testClass = Class.forName(testClassName);
433	>	Method m = testClass.getDeclaredMethod("suite");
434	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
435	>	} catch (ReflectiveOperationException e) {
436	>	throw new AssertionError("Missing test class", e);
437	>	}
438	>	}
439	>	}
440	>
441	>	public static final double JAVA_CLASS_VERSION;
442	>	public static final String JAVA_SPECIFICATION_VERSION;
443	>	static {
444	>	try {
445	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
446	>	new java.security.PrivilegedAction<Double>() {
447	>	public Double run() {
448	>	return Double.valueOf(System.getProperty("java.class.version"));}});
449	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
450	>	new java.security.PrivilegedAction<String>() {
451	>	public String run() {
452	>	return System.getProperty("java.specification.version");}});
453	>	} catch (Throwable t) {
454	>	throw new Error(t);
455	>	}
456	>	}
457	>
458	>	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
459	>	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
460	>	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
461	>	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
462	>	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
463	>	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
464	>	public static boolean atLeastJava12() { return JAVA_CLASS_VERSION >= 56.0; }
465	>	public static boolean atLeastJava13() { return JAVA_CLASS_VERSION >= 57.0; }
466	>	public static boolean atLeastJava14() { return JAVA_CLASS_VERSION >= 58.0; }
467	>	public static boolean atLeastJava15() { return JAVA_CLASS_VERSION >= 59.0; }
468	>	public static boolean atLeastJava16() { return JAVA_CLASS_VERSION >= 60.0; }
469	>	public static boolean atLeastJava17() { return JAVA_CLASS_VERSION >= 61.0; }
470
471		/**
472	<	* Initialize test to indicat that no thread assertions have failed
472	>	* Collects all JSR166 unit tests as one suite.
473		*/
474	<	public void setUp() {
475	<	threadFailed = false;
474	>	public static Test suite() {
475	>	// Java7+ test classes
476	>	TestSuite suite = newTestSuite(
477	>	ForkJoinPoolTest.suite(),
478	>	ForkJoinTaskTest.suite(),
479	>	RecursiveActionTest.suite(),
480	>	RecursiveTaskTest.suite(),
481	>	LinkedTransferQueueTest.suite(),
482	>	PhaserTest.suite(),
483	>	ThreadLocalRandomTest.suite(),
484	>	AbstractExecutorServiceTest.suite(),
485	>	AbstractQueueTest.suite(),
486	>	AbstractQueuedSynchronizerTest.suite(),
487	>	AbstractQueuedLongSynchronizerTest.suite(),
488	>	ArrayBlockingQueueTest.suite(),
489	>	ArrayDequeTest.suite(),
490	>	ArrayListTest.suite(),
491	>	AtomicBooleanTest.suite(),
492	>	AtomicIntegerArrayTest.suite(),
493	>	AtomicIntegerFieldUpdaterTest.suite(),
494	>	AtomicIntegerTest.suite(),
495	>	AtomicLongArrayTest.suite(),
496	>	AtomicLongFieldUpdaterTest.suite(),
497	>	AtomicLongTest.suite(),
498	>	AtomicMarkableReferenceTest.suite(),
499	>	AtomicReferenceArrayTest.suite(),
500	>	AtomicReferenceFieldUpdaterTest.suite(),
501	>	AtomicReferenceTest.suite(),
502	>	AtomicStampedReferenceTest.suite(),
503	>	ConcurrentHashMapTest.suite(),
504	>	ConcurrentLinkedDequeTest.suite(),
505	>	ConcurrentLinkedQueueTest.suite(),
506	>	ConcurrentSkipListMapTest.suite(),
507	>	ConcurrentSkipListSubMapTest.suite(),
508	>	ConcurrentSkipListSetTest.suite(),
509	>	ConcurrentSkipListSubSetTest.suite(),
510	>	CopyOnWriteArrayListTest.suite(),
511	>	CopyOnWriteArraySetTest.suite(),
512	>	CountDownLatchTest.suite(),
513	>	CountedCompleterTest.suite(),
514	>	CyclicBarrierTest.suite(),
515	>	DelayQueueTest.suite(),
516	>	EntryTest.suite(),
517	>	ExchangerTest.suite(),
518	>	ExecutorsTest.suite(),
519	>	ExecutorCompletionServiceTest.suite(),
520	>	FutureTaskTest.suite(),
521	>	HashtableTest.suite(),
522	>	LinkedBlockingDequeTest.suite(),
523	>	LinkedBlockingQueueTest.suite(),
524	>	LinkedListTest.suite(),
525	>	LockSupportTest.suite(),
526	>	PriorityBlockingQueueTest.suite(),
527	>	PriorityQueueTest.suite(),
528	>	ReentrantLockTest.suite(),
529	>	ReentrantReadWriteLockTest.suite(),
530	>	ScheduledExecutorTest.suite(),
531	>	ScheduledExecutorSubclassTest.suite(),
532	>	SemaphoreTest.suite(),
533	>	SynchronousQueueTest.suite(),
534	>	SystemTest.suite(),
535	>	ThreadLocalTest.suite(),
536	>	ThreadPoolExecutorTest.suite(),
537	>	ThreadPoolExecutorSubclassTest.suite(),
538	>	ThreadTest.suite(),
539	>	TimeUnitTest.suite(),
540	>	TreeMapTest.suite(),
541	>	TreeSetTest.suite(),
542	>	TreeSubMapTest.suite(),
543	>	TreeSubSetTest.suite(),
544	>	VectorTest.suite());
545	>
546	>	// Java8+ test classes
547	>	if (atLeastJava8()) {
548	>	String[] java8TestClassNames = {
549	>	"ArrayDeque8Test",
550	>	"Atomic8Test",
551	>	"CompletableFutureTest",
552	>	"ConcurrentHashMap8Test",
553	>	"CountedCompleter8Test",
554	>	"DoubleAccumulatorTest",
555	>	"DoubleAdderTest",
556	>	"ForkJoinPool8Test",
557	>	"ForkJoinTask8Test",
558	>	"HashMapTest",
559	>	"LinkedBlockingDeque8Test",
560	>	"LinkedBlockingQueue8Test",
561	>	"LinkedHashMapTest",
562	>	"LongAccumulatorTest",
563	>	"LongAdderTest",
564	>	"SplittableRandomTest",
565	>	"StampedLockTest",
566	>	"SubmissionPublisherTest",
567	>	"ThreadLocalRandom8Test",
568	>	"TimeUnit8Test",
569	>	};
570	>	addNamedTestClasses(suite, java8TestClassNames);
571	>	}
572	>
573	>	// Java9+ test classes
574	>	if (atLeastJava9()) {
575	>	String[] java9TestClassNames = {
576	>	"AtomicBoolean9Test",
577	>	"AtomicInteger9Test",
578	>	"AtomicIntegerArray9Test",
579	>	"AtomicLong9Test",
580	>	"AtomicLongArray9Test",
581	>	"AtomicReference9Test",
582	>	"AtomicReferenceArray9Test",
583	>	"ExecutorCompletionService9Test",
584	>	"ForkJoinPool9Test",
585	>	};
586	>	addNamedTestClasses(suite, java9TestClassNames);
587	>	}
588	>
589	>	return suite;
590	>	}
591	>
592	>	/** Returns list of junit-style test method names in given class. */
593	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
594	>	Method[] methods = testClass.getDeclaredMethods();
595	>	ArrayList<String> names = new ArrayList<>(methods.length);
596	>	for (Method method : methods) {
597	>	if (method.getName().startsWith("test")
598	>	&& Modifier.isPublic(method.getModifiers())
599	>	// method.getParameterCount() requires jdk8+
600	>	&& method.getParameterTypes().length == 0) {
601	>	names.add(method.getName());
602	>	}
603	>	}
604	>	return names;
605		}
606
607		/**
608	<	* Trigger test case failure if any thread assertions have failed
608	>	* Returns junit-style testSuite for the given test class, but
609	>	* parameterized by passing extra data to each test.
610		*/
611	<	public void tearDown() {
612	<	assertFalse(threadFailed);
611	>	public static <ExtraData> Test parameterizedTestSuite
612	>	(Class<? extends JSR166TestCase> testClass,
613	>	Class<ExtraData> dataClass,
614	>	ExtraData data) {
615	>	try {
616	>	TestSuite suite = new TestSuite();
617	>	Constructor c =
618	>	testClass.getDeclaredConstructor(dataClass, String.class);
619	>	for (String methodName : testMethodNames(testClass))
620	>	suite.addTest((Test) c.newInstance(data, methodName));
621	>	return suite;
622	>	} catch (ReflectiveOperationException e) {
623	>	throw new AssertionError(e);
624	>	}
625		}
626
627	+	/**
628	+	* Returns junit-style testSuite for the jdk8 extension of the
629	+	* given test class, but parameterized by passing extra data to
630	+	* each test.  Uses reflection to allow compilation in jdk7.
631	+	*/
632	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
633	+	(Class<? extends JSR166TestCase> testClass,
634	+	Class<ExtraData> dataClass,
635	+	ExtraData data) {
636	+	if (atLeastJava8()) {
637	+	String name = testClass.getName();
638	+	String name8 = name.replaceAll("Test$", "8Test");
639	+	if (name.equals(name8)) throw new AssertionError(name);
640	+	try {
641	+	return (Test)
642	+	Class.forName(name8)
643	+	.getMethod("testSuite", dataClass)
644	+	.invoke(null, data);
645	+	} catch (ReflectiveOperationException e) {
646	+	throw new AssertionError(e);
647	+	}
648	+	} else {
649	+	return new TestSuite();
650	+	}
651	+	}
652	+
653	+	// Delays for timing-dependent tests, in milliseconds.
654	+
655	+	public static long SHORT_DELAY_MS;
656	+	public static long SMALL_DELAY_MS;
657	+	public static long MEDIUM_DELAY_MS;
658	+	public static long LONG_DELAY_MS;
659	+
660	+	private static final long RANDOM_TIMEOUT;
661	+	private static final long RANDOM_EXPIRED_TIMEOUT;
662	+	private static final TimeUnit RANDOM_TIMEUNIT;
663	+	static {
664	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
665	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
666	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
667	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
668	+	TimeUnit[] timeUnits = TimeUnit.values();
669	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
670	+	}
671	+
672	+	/**
673	+	* Returns a timeout for use when any value at all will do.
674	+	*/
675	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
676	+
677	+	/**
678	+	* Returns a timeout that means "no waiting", i.e. not positive.
679	+	*/
680	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
681	+
682	+	/**
683	+	* Returns a random non-null TimeUnit.
684	+	*/
685	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
686	+
687	+	/**
688	+	* Returns a random boolean; a "coin flip".
689	+	*/
690	+	static boolean randomBoolean() {
691	+	return ThreadLocalRandom.current().nextBoolean();
692	+	}
693	+
694	+	/**
695	+	* Returns the shortest timed delay. This can be scaled up for
696	+	* slow machines using the jsr166.delay.factor system property,
697	+	* or via jtreg's -timeoutFactor: flag.
698	+	* http://openjdk.java.net/jtreg/command-help.html
699	+	*/
700	+	protected long getShortDelay() {
701	+	return (long) (50 * delayFactor);
702	+	}
703	+
704	+	/**
705	+	* Sets delays as multiples of SHORT_DELAY.
706	+	*/
707	+	protected void setDelays() {
708	+	SHORT_DELAY_MS = getShortDelay();
709	+	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
710	+	MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
711	+	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
712	+	}
713	+
714	+	private static final long TIMEOUT_DELAY_MS
715	+	= (long) (12.0 * Math.cbrt(delayFactor));
716	+
717	+	/**
718	+	* Returns a timeout in milliseconds to be used in tests that verify
719	+	* that operations block or time out.  We want this to be longer
720	+	* than the OS scheduling quantum, but not too long, so don't scale
721	+	* linearly with delayFactor; we use "crazy" cube root instead.
722	+	*/
723	+	static long timeoutMillis() {
724	+	return TIMEOUT_DELAY_MS;
725	+	}
726	+
727	+	/**
728	+	* Returns a new Date instance representing a time at least
729	+	* delayMillis milliseconds in the future.
730	+	*/
731	+	Date delayedDate(long delayMillis) {
732	+	// Add 1 because currentTimeMillis is known to round into the past.
733	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
734	+	}
735	+
736	+	/**
737	+	* The first exception encountered if any threadAssertXXX method fails.
738	+	*/
739	+	private final AtomicReference<Throwable> threadFailure
740	+	= new AtomicReference<>(null);
741	+
742	+	/**
743	+	* Records an exception so that it can be rethrown later in the test
744	+	* harness thread, triggering a test case failure.  Only the first
745	+	* failure is recorded; subsequent calls to this method from within
746	+	* the same test have no effect.
747	+	*/
748	+	public void threadRecordFailure(Throwable t) {
749	+	System.err.println(t);
750	+	dumpTestThreads();
751	+	threadFailure.compareAndSet(null, t);
752	+	}
753	+
754	+	public void setUp() {
755	+	setDelays();
756	+	}
757	+
758	+	void tearDownFail(String format, Object... args) {
759	+	String msg = toString() + ": " + String.format(format, args);
760	+	System.err.println(msg);
761	+	dumpTestThreads();
762	+	throw new AssertionError(msg);
763	+	}
764	+
765	+	/**
766	+	* Extra checks that get done for all test cases.
767	+	*
768	+	* Triggers test case failure if any thread assertions have failed,
769	+	* by rethrowing, in the test harness thread, any exception recorded
770	+	* earlier by threadRecordFailure.
771	+	*
772	+	* Triggers test case failure if interrupt status is set in the main thread.
773	+	*/
774	+	public void tearDown() throws Exception {
775	+	Throwable t = threadFailure.getAndSet(null);
776	+	if (t != null) {
777	+	if (t instanceof Error)
778	+	throw (Error) t;
779	+	else if (t instanceof RuntimeException)
780	+	throw (RuntimeException) t;
781	+	else if (t instanceof Exception)
782	+	throw (Exception) t;
783	+	else
784	+	throw new AssertionError(t.toString(), t);
785	+	}
786	+
787	+	if (Thread.interrupted())
788	+	tearDownFail("interrupt status set in main thread");
789	+
790	+	checkForkJoinPoolThreadLeaks();
791	+	}
792	+
793	+	/**
794	+	* Finds missing PoolCleaners
795	+	*/
796	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
797	+	Thread[] survivors = new Thread[7];
798	+	int count = Thread.enumerate(survivors);
799	+	for (int i = 0; i < count; i++) {
800	+	Thread thread = survivors[i];
801	+	String name = thread.getName();
802	+	if (name.startsWith("ForkJoinPool-")) {
803	+	// give thread some time to terminate
804	+	thread.join(LONG_DELAY_MS);
805	+	if (thread.isAlive())
806	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
807	+	thread);
808	+	}
809	+	}
810	+
811	+	if (!ForkJoinPool.commonPool()
812	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
813	+	tearDownFail("ForkJoin common pool thread stuck");
814	+	}
815	+
816	+	/**
817	+	* Just like fail(reason), but additionally recording (using
818	+	* threadRecordFailure) any AssertionError thrown, so that the
819	+	* current testcase will fail.
820	+	*/
821		public void threadFail(String reason) {
822	<	threadFailed = true;
823	<	fail(reason);
822	>	try {
823	>	fail(reason);
824	>	} catch (AssertionError fail) {
825	>	threadRecordFailure(fail);
826	>	throw fail;
827	>	}
828		}
829
830	+	/**
831	+	* Just like assertTrue(b), but additionally recording (using
832	+	* threadRecordFailure) any AssertionError thrown, so that the
833	+	* current testcase will fail.
834	+	*/
835		public void threadAssertTrue(boolean b) {
836	<	if (!b) {
83	<	threadFailed = true;
836	>	try {
837		assertTrue(b);
838	+	} catch (AssertionError fail) {
839	+	threadRecordFailure(fail);
840	+	throw fail;
841		}
842		}
843	+
844	+	/**
845	+	* Just like assertFalse(b), but additionally recording (using
846	+	* threadRecordFailure) any AssertionError thrown, so that the
847	+	* current testcase will fail.
848	+	*/
849		public void threadAssertFalse(boolean b) {
850	<	if (b) {
89	<	threadFailed = true;
850	>	try {
851		assertFalse(b);
852	+	} catch (AssertionError fail) {
853	+	threadRecordFailure(fail);
854	+	throw fail;
855		}
856		}
857	+
858	+	/**
859	+	* Just like assertNull(x), but additionally recording (using
860	+	* threadRecordFailure) any AssertionError thrown, so that the
861	+	* current testcase will fail.
862	+	*/
863		public void threadAssertNull(Object x) {
864	<	if (x != null) {
95	<	threadFailed = true;
864	>	try {
865		assertNull(x);
866	+	} catch (AssertionError fail) {
867	+	threadRecordFailure(fail);
868	+	throw fail;
869		}
870		}
871	+
872	+	/**
873	+	* Just like assertEquals(x, y), but additionally recording (using
874	+	* threadRecordFailure) any AssertionError thrown, so that the
875	+	* current testcase will fail.
876	+	*/
877		public void threadAssertEquals(long x, long y) {
878	<	if (x != y) {
101	<	threadFailed = true;
878	>	try {
879		assertEquals(x, y);
880	+	} catch (AssertionError fail) {
881	+	threadRecordFailure(fail);
882	+	throw fail;
883		}
884		}
885	+
886	+	/**
887	+	* Just like assertEquals(x, y), but additionally recording (using
888	+	* threadRecordFailure) any AssertionError thrown, so that the
889	+	* current testcase will fail.
890	+	*/
891		public void threadAssertEquals(Object x, Object y) {
892	<	if (x != y && (x == null || !x.equals(y))) {
107	<	threadFailed = true;
892	>	try {
893		assertEquals(x, y);
894	+	} catch (AssertionError fail) {
895	+	threadRecordFailure(fail);
896	+	throw fail;
897	+	} catch (Throwable fail) {
898	+	threadUnexpectedException(fail);
899		}
900		}
901
902		/**
903	<	* Wait out termination of a thread pool or fail doing so
903	>	* Just like assertSame(x, y), but additionally recording (using
904	>	* threadRecordFailure) any AssertionError thrown, so that the
905	>	* current testcase will fail.
906		*/
907	<	public void joinPool(ExecutorService exec) {
907	>	public void threadAssertSame(Object x, Object y) {
908		try {
909	<	exec.shutdown();
910	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
911	<	} catch(InterruptedException ie) {
912	<	fail("unexpected exception");
909	>	assertSame(x, y);
910	>	} catch (AssertionError fail) {
911	>	threadRecordFailure(fail);
912	>	throw fail;
913		}
914		}
915
916	<	public static final long SHORT_DELAY_MS =   100;
917	<	public static final long SMALL_DELAY_MS =   500;
918	<	public static final long MEDIUM_DELAY_MS = 1000;
919	<	public static final long LONG_DELAY_MS =   5000;
916	>	/**
917	>	* Calls threadFail with message "should throw exception".
918	>	*/
919	>	public void threadShouldThrow() {
920	>	threadFail("should throw exception");
921	>	}
922	>
923	>	/**
924	>	* Calls threadFail with message "should throw" + exceptionName.
925	>	*/
926	>	public void threadShouldThrow(String exceptionName) {
927	>	threadFail("should throw " + exceptionName);
928	>	}
929	>
930	>	/**
931	>	* Records the given exception using {@link #threadRecordFailure},
932	>	* then rethrows the exception, wrapping it in an AssertionError
933	>	* if necessary.
934	>	*/
935	>	public void threadUnexpectedException(Throwable t) {
936	>	threadRecordFailure(t);
937	>	t.printStackTrace();
938	>	if (t instanceof RuntimeException)
939	>	throw (RuntimeException) t;
940	>	else if (t instanceof Error)
941	>	throw (Error) t;
942	>	else
943	>	throw new AssertionError("unexpected exception: " + t, t);
944	>	}
945
946	+	/**
947	+	* Delays, via Thread.sleep, for the given millisecond delay, but
948	+	* if the sleep is shorter than specified, may re-sleep or yield
949	+	* until time elapses.  Ensures that the given time, as measured
950	+	* by System.nanoTime(), has elapsed.
951	+	*/
952	+	static void delay(long millis) throws InterruptedException {
953	+	long nanos = millis * (1000 * 1000);
954	+	final long wakeupTime = System.nanoTime() + nanos;
955	+	do {
956	+	if (millis > 0L)
957	+	Thread.sleep(millis);
958	+	else // too short to sleep
959	+	Thread.yield();
960	+	nanos = wakeupTime - System.nanoTime();
961	+	millis = nanos / (1000 * 1000);
962	+	} while (nanos >= 0L);
963	+	}
964	+
965	+	/**
966	+	* Allows use of try-with-resources with per-test thread pools.
967	+	*/
968	+	class PoolCleaner implements AutoCloseable {
969	+	private final ExecutorService pool;
970	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
971	+	public void close() { joinPool(pool); }
972	+	}
973	+
974	+	/**
975	+	* An extension of PoolCleaner that has an action to release the pool.
976	+	*/
977	+	class PoolCleanerWithReleaser extends PoolCleaner {
978	+	private final Runnable releaser;
979	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
980	+	super(pool);
981	+	this.releaser = releaser;
982	+	}
983	+	public void close() {
984	+	try {
985	+	releaser.run();
986	+	} finally {
987	+	super.close();
988	+	}
989	+	}
990	+	}
991	+
992	+	PoolCleaner cleaner(ExecutorService pool) {
993	+	return new PoolCleaner(pool);
994	+	}
995	+
996	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
997	+	return new PoolCleanerWithReleaser(pool, releaser);
998	+	}
999	+
1000	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
1001	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
1002	+	}
1003	+
1004	+	Runnable releaser(final CountDownLatch latch) {
1005	+	return new Runnable() { public void run() {
1006	+	do { latch.countDown(); }
1007	+	while (latch.getCount() > 0);
1008	+	}};
1009	+	}
1010	+
1011	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1012	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1013	+	}
1014	+
1015	+	Runnable releaser(final AtomicBoolean flag) {
1016	+	return new Runnable() { public void run() { flag.set(true); }};
1017	+	}
1018	+
1019	+	/**
1020	+	* Waits out termination of a thread pool or fails doing so.
1021	+	*/
1022	+	void joinPool(ExecutorService pool) {
1023	+	try {
1024	+	pool.shutdown();
1025	+	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1026	+	try {
1027	+	threadFail("ExecutorService " + pool +
1028	+	" did not terminate in a timely manner");
1029	+	} finally {
1030	+	// last resort, for the benefit of subsequent tests
1031	+	pool.shutdownNow();
1032	+	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1033	+	}
1034	+	}
1035	+	} catch (SecurityException ok) {
1036	+	// Allowed in case test doesn't have privs
1037	+	} catch (InterruptedException fail) {
1038	+	threadFail("Unexpected InterruptedException");
1039	+	}
1040	+	}
1041	+
1042	+	/**
1043	+	* Like Runnable, but with the freedom to throw anything.
1044	+	* junit folks had the same idea:
1045	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1046	+	*/
1047	+	interface Action { public void run() throws Throwable; }
1048	+
1049	+	/**
1050	+	* Runs all the given actions in parallel, failing if any fail.
1051	+	* Useful for running multiple variants of tests that are
1052	+	* necessarily individually slow because they must block.
1053	+	*/
1054	+	void testInParallel(Action ... actions) {
1055	+	ExecutorService pool = Executors.newCachedThreadPool();
1056	+	try (PoolCleaner cleaner = cleaner(pool)) {
1057	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1058	+	for (final Action action : actions)
1059	+	futures.add(pool.submit(new CheckedRunnable() {
1060	+	public void realRun() throws Throwable { action.run();}}));
1061	+	for (Future<?> future : futures)
1062	+	try {
1063	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1064	+	} catch (ExecutionException ex) {
1065	+	threadUnexpectedException(ex.getCause());
1066	+	} catch (Exception ex) {
1067	+	threadUnexpectedException(ex);
1068	+	}
1069	+	}
1070	+	}
1071	+
1072	+	/**
1073	+	* A debugging tool to print stack traces of most threads, as jstack does.
1074	+	* Uninteresting threads are filtered out.
1075	+	*/
1076	+	static void dumpTestThreads() {
1077	+	SecurityManager sm = System.getSecurityManager();
1078	+	if (sm != null) {
1079	+	try {
1080	+	System.setSecurityManager(null);
1081	+	} catch (SecurityException giveUp) {
1082	+	return;
1083	+	}
1084	+	}
1085	+
1086	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1087	+	System.err.println("------ stacktrace dump start ------");
1088	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1089	+	final String name = info.getThreadName();
1090	+	String lockName;
1091	+	if ("Signal Dispatcher".equals(name))
1092	+	continue;
1093	+	if ("Reference Handler".equals(name)
1094	+	&& (lockName = info.getLockName()) != null
1095	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1096	+	continue;
1097	+	if ("Finalizer".equals(name)
1098	+	&& (lockName = info.getLockName()) != null
1099	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1100	+	continue;
1101	+	if ("checkForWedgedTest".equals(name))
1102	+	continue;
1103	+	System.err.print(info);
1104	+	}
1105	+	System.err.println("------ stacktrace dump end ------");
1106	+
1107	+	if (sm != null) System.setSecurityManager(sm);
1108	+	}
1109	+
1110	+	/**
1111	+	* Checks that thread eventually enters the expected blocked thread state.
1112	+	*/
1113	+	void assertThreadBlocks(Thread thread, Thread.State expected) {
1114	+	// always sleep at least 1 ms, with high probability avoiding
1115	+	// transitory states
1116	+	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1117	+	try { delay(1); }
1118	+	catch (InterruptedException fail) {
1119	+	throw new AssertionError("Unexpected InterruptedException", fail);
1120	+	}
1121	+	Thread.State s = thread.getState();
1122	+	if (s == expected)
1123	+	return;
1124	+	else if (s == Thread.State.TERMINATED)
1125	+	fail("Unexpected thread termination");
1126	+	}
1127	+	fail("timed out waiting for thread to enter thread state " + expected);
1128	+	}
1129	+
1130	+	/**
1131	+	* Checks that future.get times out, with the default timeout of
1132	+	* {@code timeoutMillis()}.
1133	+	*/
1134	+	void assertFutureTimesOut(Future future) {
1135	+	assertFutureTimesOut(future, timeoutMillis());
1136	+	}
1137	+
1138	+	/**
1139	+	* Checks that future.get times out, with the given millisecond timeout.
1140	+	*/
1141	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1142	+	long startTime = System.nanoTime();
1143	+	try {
1144	+	future.get(timeoutMillis, MILLISECONDS);
1145	+	shouldThrow();
1146	+	} catch (TimeoutException success) {
1147	+	} catch (Exception fail) {
1148	+	threadUnexpectedException(fail);
1149	+	} finally { future.cancel(true); }
1150	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1151	+	}
1152	+
1153	+	/**
1154	+	* Fails with message "should throw exception".
1155	+	*/
1156	+	public void shouldThrow() {
1157	+	fail("Should throw exception");
1158	+	}
1159	+
1160	+	/**
1161	+	* Fails with message "should throw " + exceptionName.
1162	+	*/
1163	+	public void shouldThrow(String exceptionName) {
1164	+	fail("Should throw " + exceptionName);
1165	+	}
1166	+
1167	+	/**
1168	+	* The maximum number of consecutive spurious wakeups we should
1169	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1170	+	*/
1171	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1172
1173		/**
1174		* The number of elements to place in collections, arrays, etc.
#	Line 134 | Line 1177 | public class JSR166TestCase extends Test
1177
1178		// Some convenient Integer constants
1179
1180	<	public static final Integer zero = new Integer(0);
1181	<	public static final Integer one = new Integer(1);
1182	<	public static final Integer two = new Integer(2);
1183	<	public static final Integer three  = new Integer(3);
1180	>	public static final Integer zero  = new Integer(0);
1181	>	public static final Integer one   = new Integer(1);
1182	>	public static final Integer two   = new Integer(2);
1183	>	public static final Integer three = new Integer(3);
1184		public static final Integer four  = new Integer(4);
1185		public static final Integer five  = new Integer(5);
1186	<	public static final Integer six = new Integer(6);
1186	>	public static final Integer six   = new Integer(6);
1187		public static final Integer seven = new Integer(7);
1188		public static final Integer eight = new Integer(8);
1189	<	public static final Integer nine = new Integer(9);
1189	>	public static final Integer nine  = new Integer(9);
1190		public static final Integer m1  = new Integer(-1);
1191		public static final Integer m2  = new Integer(-2);
1192		public static final Integer m3  = new Integer(-3);
1193	<	public static final Integer m4 = new Integer(-4);
1194	<	public static final Integer m5 = new Integer(-5);
1193	>	public static final Integer m4  = new Integer(-4);
1194	>	public static final Integer m5  = new Integer(-5);
1195	>	public static final Integer m6  = new Integer(-6);
1196		public static final Integer m10 = new Integer(-10);
1197
1198	+	/**
1199	+	* Runs Runnable r with a security policy that permits precisely
1200	+	* the specified permissions.  If there is no current security
1201	+	* manager, the runnable is run twice, both with and without a
1202	+	* security manager.  We require that any security manager permit
1203	+	* getPolicy/setPolicy.
1204	+	*/
1205	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1206	+	SecurityManager sm = System.getSecurityManager();
1207	+	if (sm == null) {
1208	+	r.run();
1209	+	}
1210	+	runWithSecurityManagerWithPermissions(r, permissions);
1211	+	}
1212
1213	<	// Some convenient Runnable classes
1213	>	/**
1214	>	* Runs Runnable r with a security policy that permits precisely
1215	>	* the specified permissions.  If there is no current security
1216	>	* manager, a temporary one is set for the duration of the
1217	>	* Runnable.  We require that any security manager permit
1218	>	* getPolicy/setPolicy.
1219	>	*/
1220	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1221	>	Permission... permissions) {
1222	>	SecurityManager sm = System.getSecurityManager();
1223	>	if (sm == null) {
1224	>	Policy savedPolicy = Policy.getPolicy();
1225	>	try {
1226	>	Policy.setPolicy(permissivePolicy());
1227	>	System.setSecurityManager(new SecurityManager());
1228	>	runWithSecurityManagerWithPermissions(r, permissions);
1229	>	} finally {
1230	>	System.setSecurityManager(null);
1231	>	Policy.setPolicy(savedPolicy);
1232	>	}
1233	>	} else {
1234	>	Policy savedPolicy = Policy.getPolicy();
1235	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1236	>	Policy.setPolicy(policy);
1237
1238	<	public static class NoOpRunnable implements Runnable {
1239	<	public void run() {}
1238	>	try {
1239	>	r.run();
1240	>	} finally {
1241	>	policy.addPermission(new SecurityPermission("setPolicy"));
1242	>	Policy.setPolicy(savedPolicy);
1243	>	}
1244	>	}
1245		}
1246
1247	<	public static class NoOpCallable implements Callable {
1248	<	public Object call() { return Boolean.TRUE; }
1247	>	/**
1248	>	* Runs a runnable without any permissions.
1249	>	*/
1250	>	public void runWithoutPermissions(Runnable r) {
1251	>	runWithPermissions(r);
1252		}
1253
1254	<	public class ShortRunnable implements Runnable {
1255	<	public void run() {
1256	<	try {
1257	<	Thread.sleep(SHORT_DELAY_MS);
1254	>	/**
1255	>	* A security policy where new permissions can be dynamically added
1256	>	* or all cleared.
1257	>	*/
1258	>	public static class AdjustablePolicy extends java.security.Policy {
1259	>	Permissions perms = new Permissions();
1260	>	AdjustablePolicy(Permission... permissions) {
1261	>	for (Permission permission : permissions)
1262	>	perms.add(permission);
1263	>	}
1264	>	void addPermission(Permission perm) { perms.add(perm); }
1265	>	void clearPermissions() { perms = new Permissions(); }
1266	>	public PermissionCollection getPermissions(CodeSource cs) {
1267	>	return perms;
1268	>	}
1269	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1270	>	return perms;
1271	>	}
1272	>	public boolean implies(ProtectionDomain pd, Permission p) {
1273	>	return perms.implies(p);
1274	>	}
1275	>	public void refresh() {}
1276	>	public String toString() {
1277	>	List<Permission> ps = new ArrayList<>();
1278	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1279	>	ps.add(e.nextElement());
1280	>	return "AdjustablePolicy with permissions " + ps;
1281	>	}
1282	>	}
1283	>
1284	>	/**
1285	>	* Returns a policy containing all the permissions we ever need.
1286	>	*/
1287	>	public static Policy permissivePolicy() {
1288	>	return new AdjustablePolicy
1289	>	// Permissions j.u.c. needs directly
1290	>	(new RuntimePermission("modifyThread"),
1291	>	new RuntimePermission("getClassLoader"),
1292	>	new RuntimePermission("setContextClassLoader"),
1293	>	// Permissions needed to change permissions!
1294	>	new SecurityPermission("getPolicy"),
1295	>	new SecurityPermission("setPolicy"),
1296	>	new RuntimePermission("setSecurityManager"),
1297	>	// Permissions needed by the junit test harness
1298	>	new RuntimePermission("accessDeclaredMembers"),
1299	>	new PropertyPermission("*", "read"),
1300	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1301	>	}
1302	>
1303	>	/**
1304	>	* Sleeps until the given time has elapsed.
1305	>	* Throws AssertionError if interrupted.
1306	>	*/
1307	>	static void sleep(long millis) {
1308	>	try {
1309	>	delay(millis);
1310	>	} catch (InterruptedException fail) {
1311	>	throw new AssertionError("Unexpected InterruptedException", fail);
1312	>	}
1313	>	}
1314	>
1315	>	/**
1316	>	* Spin-waits up to the specified number of milliseconds for the given
1317	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1318	>	* @param waitingForGodot if non-null, an additional condition to satisfy
1319	>	*/
1320	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1321	>	Callable<Boolean> waitingForGodot) {
1322	>	for (long startTime = 0L;;) {
1323	>	switch (thread.getState()) {
1324	>	default: break;
1325	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1326	>	try {
1327	>	if (waitingForGodot == null || waitingForGodot.call())
1328	>	return;
1329	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1330	>	break;
1331	>	case TERMINATED:
1332	>	fail("Unexpected thread termination");
1333		}
1334	<	catch(Exception e) {
1335	<	threadFail("unexpectedException");
1334	>
1335	>	if (startTime == 0L)
1336	>	startTime = System.nanoTime();
1337	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1338	>	assertTrue(thread.isAlive());
1339	>	if (waitingForGodot == null
1340	>	|| thread.getState() == Thread.State.RUNNABLE)
1341	>	fail("timed out waiting for thread to enter wait state");
1342	>	else
1343	>	fail("timed out waiting for condition, thread state="
1344	>	+ thread.getState());
1345		}
1346	+	Thread.yield();
1347		}
1348		}
1349
1350	<	public class ShortInterruptedRunnable implements Runnable {
1351	<	public void run() {
1352	<	try {
1353	<	Thread.sleep(SHORT_DELAY_MS);
1354	<	threadFail("should throw IE");
1355	<	}
1356	<	catch(InterruptedException success) {
1350	>	/**
1351	>	* Spin-waits up to the specified number of milliseconds for the given
1352	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1353	>	*/
1354	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1355	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1356	>	}
1357	>
1358	>	/**
1359	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1360	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1361	>	*/
1362	>	void waitForThreadToEnterWaitState(Thread thread) {
1363	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1364	>	}
1365	>
1366	>	/**
1367	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1368	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1369	>	* and additionally satisfy the given condition.
1370	>	*/
1371	>	void waitForThreadToEnterWaitState(Thread thread,
1372	>	Callable<Boolean> waitingForGodot) {
1373	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1374	>	}
1375	>
1376	>	/**
1377	>	* Returns the number of milliseconds since time given by
1378	>	* startNanoTime, which must have been previously returned from a
1379	>	* call to {@link System#nanoTime()}.
1380	>	*/
1381	>	static long millisElapsedSince(long startNanoTime) {
1382	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1383	>	}
1384	>
1385	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1386	>	//         long startTime = System.nanoTime();
1387	>	//         try {
1388	>	//             r.run();
1389	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1390	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1391	>	//             throw new AssertionError("did not return promptly");
1392	>	//     }
1393	>
1394	>	//     void assertTerminatesPromptly(Runnable r) {
1395	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1396	>	//     }
1397	>
1398	>	/**
1399	>	* Checks that timed f.get() returns the expected value, and does not
1400	>	* wait for the timeout to elapse before returning.
1401	>	*/
1402	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1403	>	long startTime = System.nanoTime();
1404	>	T actual = null;
1405	>	try {
1406	>	actual = f.get(timeoutMillis, MILLISECONDS);
1407	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1408	>	assertEquals(expectedValue, actual);
1409	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1410	>	throw new AssertionError("timed get did not return promptly");
1411	>	}
1412	>
1413	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1414	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1415	>	}
1416	>
1417	>	/**
1418	>	* Returns a new started daemon Thread running the given runnable.
1419	>	*/
1420	>	Thread newStartedThread(Runnable runnable) {
1421	>	Thread t = new Thread(runnable);
1422	>	t.setDaemon(true);
1423	>	t.start();
1424	>	return t;
1425	>	}
1426	>
1427	>	/**
1428	>	* Waits for the specified time (in milliseconds) for the thread
1429	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1430	>	* the thread (in the hope that it may terminate later) and fails.
1431	>	*/
1432	>	void awaitTermination(Thread t, long timeoutMillis) {
1433	>	try {
1434	>	t.join(timeoutMillis);
1435	>	} catch (InterruptedException fail) {
1436	>	threadUnexpectedException(fail);
1437	>	} finally {
1438	>	if (t.getState() != Thread.State.TERMINATED) {
1439	>	t.interrupt();
1440	>	threadFail("timed out waiting for thread to terminate");
1441		}
1442		}
1443		}
1444
1445	<	public class SmallRunnable implements Runnable {
1446	<	public void run() {
1445	>	/**
1446	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1447	>	* terminate (using {@link Thread#join(long)}), else interrupts
1448	>	* the thread (in the hope that it may terminate later) and fails.
1449	>	*/
1450	>	void awaitTermination(Thread t) {
1451	>	awaitTermination(t, LONG_DELAY_MS);
1452	>	}
1453	>
1454	>	// Some convenient Runnable classes
1455	>
1456	>	public abstract class CheckedRunnable implements Runnable {
1457	>	protected abstract void realRun() throws Throwable;
1458	>
1459	>	public final void run() {
1460		try {
1461	<	Thread.sleep(SMALL_DELAY_MS);
1462	<	}
1463	<	catch(Exception e) {
193	<	threadFail("unexpectedException");
1461	>	realRun();
1462	>	} catch (Throwable fail) {
1463	>	threadUnexpectedException(fail);
1464		}
1465		}
1466		}
1467
1468	<	public class SmallCallable implements Callable {
1469	<	public Object call() {
1468	>	public abstract class ThreadShouldThrow extends Thread {
1469	>	protected abstract void realRun() throws Throwable;
1470	>
1471	>	final Class<?> exceptionClass;
1472	>
1473	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1474	>	this.exceptionClass = exceptionClass;
1475	>	}
1476	>
1477	>	public final void run() {
1478		try {
1479	<	Thread.sleep(SMALL_DELAY_MS);
1479	>	realRun();
1480	>	} catch (Throwable t) {
1481	>	if (! exceptionClass.isInstance(t))
1482	>	threadUnexpectedException(t);
1483	>	return;
1484		}
1485	<	catch(Exception e) {
204	<	threadFail("unexpectedException");
205	<	}
206	<	return Boolean.TRUE;
1485	>	threadShouldThrow(exceptionClass.getSimpleName());
1486		}
1487		}
1488
1489	<	public class SmallInterruptedRunnable implements Runnable {
1490	<	public void run() {
1489	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1490	>	protected abstract void realRun() throws Throwable;
1491	>
1492	>	public final void run() {
1493		try {
1494	<	Thread.sleep(SMALL_DELAY_MS);
1495	<	threadFail("should throw IE");
1494	>	realRun();
1495	>	} catch (InterruptedException success) {
1496	>	threadAssertFalse(Thread.interrupted());
1497	>	return;
1498	>	} catch (Throwable fail) {
1499	>	threadUnexpectedException(fail);
1500		}
1501	<	catch(InterruptedException success) {
1501	>	threadShouldThrow("InterruptedException");
1502	>	}
1503	>	}
1504	>
1505	>	public abstract class CheckedCallable<T> implements Callable<T> {
1506	>	protected abstract T realCall() throws Throwable;
1507	>
1508	>	public final T call() {
1509	>	try {
1510	>	return realCall();
1511	>	} catch (Throwable fail) {
1512	>	threadUnexpectedException(fail);
1513		}
1514	+	throw new AssertionError("unreached");
1515	+	}
1516	+	}
1517	+
1518	+	public static class NoOpRunnable implements Runnable {
1519	+	public void run() {}
1520	+	}
1521	+
1522	+	public static class NoOpCallable implements Callable {
1523	+	public Object call() { return Boolean.TRUE; }
1524	+	}
1525	+
1526	+	public static final String TEST_STRING = "a test string";
1527	+
1528	+	public static class StringTask implements Callable<String> {
1529	+	final String value;
1530	+	public StringTask() { this(TEST_STRING); }
1531	+	public StringTask(String value) { this.value = value; }
1532	+	public String call() { return value; }
1533	+	}
1534	+
1535	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1536	+	return new CheckedCallable<String>() {
1537	+	protected String realCall() {
1538	+	try {
1539	+	latch.await();
1540	+	} catch (InterruptedException quittingTime) {}
1541	+	return TEST_STRING;
1542	+	}};
1543	+	}
1544	+
1545	+	public Runnable countDowner(final CountDownLatch latch) {
1546	+	return new CheckedRunnable() {
1547	+	public void realRun() throws InterruptedException {
1548	+	latch.countDown();
1549	+	}};
1550	+	}
1551	+
1552	+	class LatchAwaiter extends CheckedRunnable {
1553	+	static final int NEW = 0;
1554	+	static final int RUNNING = 1;
1555	+	static final int DONE = 2;
1556	+	final CountDownLatch latch;
1557	+	int state = NEW;
1558	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1559	+	public void realRun() throws InterruptedException {
1560	+	state = 1;
1561	+	await(latch);
1562	+	state = 2;
1563	+	}
1564	+	}
1565	+
1566	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1567	+	return new LatchAwaiter(latch);
1568	+	}
1569	+
1570	+	public void await(CountDownLatch latch, long timeoutMillis) {
1571	+	boolean timedOut = false;
1572	+	try {
1573	+	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1574	+	} catch (Throwable fail) {
1575	+	threadUnexpectedException(fail);
1576		}
1577	+	if (timedOut)
1578	+	fail("timed out waiting for CountDownLatch for "
1579	+	+ (timeoutMillis/1000) + " sec");
1580		}
1581
1582	+	public void await(CountDownLatch latch) {
1583	+	await(latch, LONG_DELAY_MS);
1584	+	}
1585
1586	<	public class MediumRunnable implements Runnable {
1586	>	public void await(Semaphore semaphore) {
1587	>	boolean timedOut = false;
1588	>	try {
1589	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1590	>	} catch (Throwable fail) {
1591	>	threadUnexpectedException(fail);
1592	>	}
1593	>	if (timedOut)
1594	>	fail("timed out waiting for Semaphore for "
1595	>	+ (LONG_DELAY_MS/1000) + " sec");
1596	>	}
1597	>
1598	>	public void await(CyclicBarrier barrier) {
1599	>	try {
1600	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1601	>	} catch (Throwable fail) {
1602	>	threadUnexpectedException(fail);
1603	>	}
1604	>	}
1605	>
1606	>	//     /**
1607	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1608	>	//      */
1609	>	//     public void await(AtomicBoolean flag) {
1610	>	//         await(flag, LONG_DELAY_MS);
1611	>	//     }
1612	>
1613	>	//     /**
1614	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1615	>	//      */
1616	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1617	>	//         long startTime = System.nanoTime();
1618	>	//         while (!flag.get()) {
1619	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1620	>	//                 throw new AssertionError("timed out");
1621	>	//             Thread.yield();
1622	>	//         }
1623	>	//     }
1624	>
1625	>	public static class NPETask implements Callable<String> {
1626	>	public String call() { throw new NullPointerException(); }
1627	>	}
1628	>
1629	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1630	>	return new CheckedRunnable() {
1631	>	protected void realRun() {
1632	>	try {
1633	>	delay(timeoutMillis);
1634	>	} catch (InterruptedException ok) {}
1635	>	}};
1636	>	}
1637	>
1638	>	/**
1639	>	* For use as ThreadFactory in constructors
1640	>	*/
1641	>	public static class SimpleThreadFactory implements ThreadFactory {
1642	>	public Thread newThread(Runnable r) {
1643	>	return new Thread(r);
1644	>	}
1645	>	}
1646	>
1647	>	public interface TrackedRunnable extends Runnable {
1648	>	boolean isDone();
1649	>	}
1650	>
1651	>	public static class TrackedNoOpRunnable implements Runnable {
1652	>	public volatile boolean done = false;
1653		public void run() {
1654	+	done = true;
1655	+	}
1656	+	}
1657	+
1658	+	/**
1659	+	* Analog of CheckedRunnable for RecursiveAction
1660	+	*/
1661	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1662	+	protected abstract void realCompute() throws Throwable;
1663	+
1664	+	@Override protected final void compute() {
1665		try {
1666	<	Thread.sleep(MEDIUM_DELAY_MS);
1667	<	}
1668	<	catch(Exception e) {
228	<	threadFail("unexpectedException");
1666	>	realCompute();
1667	>	} catch (Throwable fail) {
1668	>	threadUnexpectedException(fail);
1669		}
1670		}
1671		}
1672
1673	<	public class MediumInterruptedRunnable implements Runnable {
1674	<	public void run() {
1673	>	/**
1674	>	* Analog of CheckedCallable for RecursiveTask
1675	>	*/
1676	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1677	>	protected abstract T realCompute() throws Throwable;
1678	>
1679	>	@Override protected final T compute() {
1680		try {
1681	<	Thread.sleep(MEDIUM_DELAY_MS);
1682	<	threadFail("should throw IE");
1681	>	return realCompute();
1682	>	} catch (Throwable fail) {
1683	>	threadUnexpectedException(fail);
1684		}
1685	<	catch(InterruptedException success) {
1685	>	throw new AssertionError("unreached");
1686	>	}
1687	>	}
1688	>
1689	>	/**
1690	>	* For use as RejectedExecutionHandler in constructors
1691	>	*/
1692	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1693	>	public void rejectedExecution(Runnable r,
1694	>	ThreadPoolExecutor executor) {}
1695	>	}
1696	>
1697	>	/**
1698	>	* A CyclicBarrier that uses timed await and fails with
1699	>	* AssertionErrors instead of throwing checked exceptions.
1700	>	*/
1701	>	public static class CheckedBarrier extends CyclicBarrier {
1702	>	public CheckedBarrier(int parties) { super(parties); }
1703	>
1704	>	public int await() {
1705	>	try {
1706	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1707	>	} catch (TimeoutException timedOut) {
1708	>	throw new AssertionError("timed out");
1709	>	} catch (Exception fail) {
1710	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1711		}
1712		}
1713		}
1714
1715	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1716	<	public void run() {
1715	>	void checkEmpty(BlockingQueue q) {
1716	>	try {
1717	>	assertTrue(q.isEmpty());
1718	>	assertEquals(0, q.size());
1719	>	assertNull(q.peek());
1720	>	assertNull(q.poll());
1721	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1722	>	assertEquals(q.toString(), "[]");
1723	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1724	>	assertFalse(q.iterator().hasNext());
1725	>	try {
1726	>	q.element();
1727	>	shouldThrow();
1728	>	} catch (NoSuchElementException success) {}
1729	>	try {
1730	>	q.iterator().next();
1731	>	shouldThrow();
1732	>	} catch (NoSuchElementException success) {}
1733		try {
1734	<	Thread.sleep(MEDIUM_DELAY_MS);
1734	>	q.remove();
1735	>	shouldThrow();
1736	>	} catch (NoSuchElementException success) {}
1737	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1738	>	}
1739	>
1740	>	void assertSerialEquals(Object x, Object y) {
1741	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1742	>	}
1743	>
1744	>	void assertNotSerialEquals(Object x, Object y) {
1745	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1746	>	}
1747	>
1748	>	byte[] serialBytes(Object o) {
1749	>	try {
1750	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1751	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1752	>	oos.writeObject(o);
1753	>	oos.flush();
1754	>	oos.close();
1755	>	return bos.toByteArray();
1756	>	} catch (Throwable fail) {
1757	>	threadUnexpectedException(fail);
1758	>	return new byte[0];
1759	>	}
1760	>	}
1761	>
1762	>	void assertImmutable(Object o) {
1763	>	if (o instanceof Collection) {
1764	>	assertThrows(
1765	>	UnsupportedOperationException.class,
1766	>	() -> ((Collection) o).add(null));
1767	>	}
1768	>	}
1769	>
1770	>	@SuppressWarnings("unchecked")
1771	>	<T> T serialClone(T o) {
1772	>	T clone = null;
1773	>	try {
1774	>	ObjectInputStream ois = new ObjectInputStream
1775	>	(new ByteArrayInputStream(serialBytes(o)));
1776	>	clone = (T) ois.readObject();
1777	>	} catch (Throwable fail) {
1778	>	threadUnexpectedException(fail);
1779	>	}
1780	>	if (o == clone) assertImmutable(o);
1781	>	else assertSame(o.getClass(), clone.getClass());
1782	>	return clone;
1783	>	}
1784	>
1785	>	/**
1786	>	* A version of serialClone that leaves error handling (for
1787	>	* e.g. NotSerializableException) up to the caller.
1788	>	*/
1789	>	@SuppressWarnings("unchecked")
1790	>	<T> T serialClonePossiblyFailing(T o)
1791	>	throws ReflectiveOperationException, java.io.IOException {
1792	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1793	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1794	>	oos.writeObject(o);
1795	>	oos.flush();
1796	>	oos.close();
1797	>	ObjectInputStream ois = new ObjectInputStream
1798	>	(new ByteArrayInputStream(bos.toByteArray()));
1799	>	T clone = (T) ois.readObject();
1800	>	if (o == clone) assertImmutable(o);
1801	>	else assertSame(o.getClass(), clone.getClass());
1802	>	return clone;
1803	>	}
1804	>
1805	>	/**
1806	>	* If o implements Cloneable and has a public clone method,
1807	>	* returns a clone of o, else null.
1808	>	*/
1809	>	@SuppressWarnings("unchecked")
1810	>	<T> T cloneableClone(T o) {
1811	>	if (!(o instanceof Cloneable)) return null;
1812	>	final T clone;
1813	>	try {
1814	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1815	>	} catch (NoSuchMethodException ok) {
1816	>	return null;
1817	>	} catch (ReflectiveOperationException unexpected) {
1818	>	throw new Error(unexpected);
1819	>	}
1820	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1821	>	assertSame(o.getClass(), clone.getClass());
1822	>	return clone;
1823	>	}
1824	>
1825	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1826	>	Action... throwingActions) {
1827	>	for (Action throwingAction : throwingActions) {
1828	>	boolean threw = false;
1829	>	try { throwingAction.run(); }
1830	>	catch (Throwable t) {
1831	>	threw = true;
1832	>	if (!expectedExceptionClass.isInstance(t))
1833	>	throw new AssertionError(
1834	>	"Expected " + expectedExceptionClass.getName() +
1835	>	", got " + t.getClass().getName(),
1836	>	t);
1837	>	}
1838	>	if (!threw)
1839	>	shouldThrow(expectedExceptionClass.getName());
1840	>	}
1841	>	}
1842	>
1843	>	public void assertIteratorExhausted(Iterator<?> it) {
1844	>	try {
1845	>	it.next();
1846	>	shouldThrow();
1847	>	} catch (NoSuchElementException success) {}
1848	>	assertFalse(it.hasNext());
1849	>	}
1850	>
1851	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1852	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1853	>	}
1854	>
1855	>	public Runnable runnableThrowing(final RuntimeException ex) {
1856	>	return new Runnable() { public void run() { throw ex; }};
1857	>	}
1858	>
1859	>	/** A reusable thread pool to be shared by tests. */
1860	>	static final ExecutorService cachedThreadPool =
1861	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1862	>	1000L, MILLISECONDS,
1863	>	new SynchronousQueue<Runnable>());
1864	>
1865	>	static <T> void shuffle(T[] array) {
1866	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1867	>	}
1868	>
1869	>	/**
1870	>	* Returns the same String as would be returned by {@link
1871	>	* Object#toString}, whether or not the given object's class
1872	>	* overrides toString().
1873	>	*
1874	>	* @see System#identityHashCode
1875	>	*/
1876	>	static String identityString(Object x) {
1877	>	return x.getClass().getName()
1878	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1879	>	}
1880	>
1881	>	// --- Shared assertions for Executor tests ---
1882	>
1883	>	/**
1884	>	* Returns maximum number of tasks that can be submitted to given
1885	>	* pool (with bounded queue) before saturation (when submission
1886	>	* throws RejectedExecutionException).
1887	>	*/
1888	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1889	>	BlockingQueue<Runnable> q = pool.getQueue();
1890	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1891	>	}
1892	>
1893	>	@SuppressWarnings("FutureReturnValueIgnored")
1894	>	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1895	>	try {
1896	>	e.execute((Runnable) null);
1897	>	shouldThrow();
1898	>	} catch (NullPointerException success) {}
1899	>
1900	>	if (! (e instanceof ExecutorService)) return;
1901	>	ExecutorService es = (ExecutorService) e;
1902	>	try {
1903	>	es.submit((Runnable) null);
1904	>	shouldThrow();
1905	>	} catch (NullPointerException success) {}
1906	>	try {
1907	>	es.submit((Runnable) null, Boolean.TRUE);
1908	>	shouldThrow();
1909	>	} catch (NullPointerException success) {}
1910	>	try {
1911	>	es.submit((Callable) null);
1912	>	shouldThrow();
1913	>	} catch (NullPointerException success) {}
1914	>
1915	>	if (! (e instanceof ScheduledExecutorService)) return;
1916	>	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1917	>	try {
1918	>	ses.schedule((Runnable) null,
1919	>	randomTimeout(), randomTimeUnit());
1920	>	shouldThrow();
1921	>	} catch (NullPointerException success) {}
1922	>	try {
1923	>	ses.schedule((Callable) null,
1924	>	randomTimeout(), randomTimeUnit());
1925	>	shouldThrow();
1926	>	} catch (NullPointerException success) {}
1927	>	try {
1928	>	ses.scheduleAtFixedRate((Runnable) null,
1929	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1930	>	shouldThrow();
1931	>	} catch (NullPointerException success) {}
1932	>	try {
1933	>	ses.scheduleWithFixedDelay((Runnable) null,
1934	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1935	>	shouldThrow();
1936	>	} catch (NullPointerException success) {}
1937	>	}
1938	>
1939	>	void setRejectedExecutionHandler(
1940	>	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1941	>	p.setRejectedExecutionHandler(handler);
1942	>	assertSame(handler, p.getRejectedExecutionHandler());
1943	>	}
1944	>
1945	>	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1946	>	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1947	>	final long savedTaskCount = p.getTaskCount();
1948	>	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1949	>	final int savedQueueSize = p.getQueue().size();
1950	>	final boolean stock = (p.getClass().getClassLoader() == null);
1951	>
1952	>	Runnable r = () -> {};
1953	>	Callable<Boolean> c = () -> Boolean.TRUE;
1954	>
1955	>	class Recorder implements RejectedExecutionHandler {
1956	>	public volatile Runnable r = null;
1957	>	public volatile ThreadPoolExecutor p = null;
1958	>	public void reset() { r = null; p = null; }
1959	>	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1960	>	assertNull(this.r);
1961	>	assertNull(this.p);
1962	>	this.r = r;
1963	>	this.p = p;
1964		}
1965	<	catch(InterruptedException success) {
1965	>	}
1966	>
1967	>	// check custom handler is invoked exactly once per task
1968	>	Recorder recorder = new Recorder();
1969	>	setRejectedExecutionHandler(p, recorder);
1970	>	for (int i = 2; i--> 0; ) {
1971	>	recorder.reset();
1972	>	p.execute(r);
1973	>	if (stock && p.getClass() == ThreadPoolExecutor.class)
1974	>	assertSame(r, recorder.r);
1975	>	assertSame(p, recorder.p);
1976	>
1977	>	recorder.reset();
1978	>	assertFalse(p.submit(r).isDone());
1979	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1980	>	assertSame(p, recorder.p);
1981	>
1982	>	recorder.reset();
1983	>	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1984	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1985	>	assertSame(p, recorder.p);
1986	>
1987	>	recorder.reset();
1988	>	assertFalse(p.submit(c).isDone());
1989	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1990	>	assertSame(p, recorder.p);
1991	>
1992	>	if (p instanceof ScheduledExecutorService) {
1993	>	ScheduledExecutorService s = (ScheduledExecutorService) p;
1994	>	ScheduledFuture<?> future;
1995	>
1996	>	recorder.reset();
1997	>	future = s.schedule(r, randomTimeout(), randomTimeUnit());
1998	>	assertFalse(future.isDone());
1999	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2000	>	assertSame(p, recorder.p);
2001	>
2002	>	recorder.reset();
2003	>	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2004	>	assertFalse(future.isDone());
2005	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2006	>	assertSame(p, recorder.p);
2007	>
2008	>	recorder.reset();
2009	>	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2010	>	assertFalse(future.isDone());
2011	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2012	>	assertSame(p, recorder.p);
2013	>
2014	>	recorder.reset();
2015	>	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2016	>	assertFalse(future.isDone());
2017	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2018	>	assertSame(p, recorder.p);
2019	>	}
2020	>	}
2021	>
2022	>	// Checking our custom handler above should be sufficient, but
2023	>	// we add some integration tests of standard handlers.
2024	>	final AtomicReference<Thread> thread = new AtomicReference<>();
2025	>	final Runnable setThread = () -> thread.set(Thread.currentThread());
2026	>
2027	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2028	>	try {
2029	>	p.execute(setThread);
2030	>	shouldThrow();
2031	>	} catch (RejectedExecutionException success) {}
2032	>	assertNull(thread.get());
2033	>
2034	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2035	>	p.execute(setThread);
2036	>	assertNull(thread.get());
2037	>
2038	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2039	>	p.execute(setThread);
2040	>	if (p.isShutdown())
2041	>	assertNull(thread.get());
2042	>	else
2043	>	assertSame(Thread.currentThread(), thread.get());
2044	>
2045	>	setRejectedExecutionHandler(p, savedHandler);
2046	>
2047	>	// check that pool was not perturbed by handlers
2048	>	assertEquals(savedTaskCount, p.getTaskCount());
2049	>	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2050	>	assertEquals(savedQueueSize, p.getQueue().size());
2051	>	}
2052	>
2053	>	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2054	>	assertEquals(x, y);
2055	>	assertEquals(y, x);
2056	>	assertEquals(x.isEmpty(), y.isEmpty());
2057	>	assertEquals(x.size(), y.size());
2058	>	if (x instanceof List) {
2059	>	assertEquals(x.toString(), y.toString());
2060	>	}
2061	>	if (x instanceof List || x instanceof Set) {
2062	>	assertEquals(x.hashCode(), y.hashCode());
2063	>	}
2064	>	if (x instanceof List || x instanceof Deque) {
2065	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2066	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2067	>	y.toArray(new Object[0])));
2068	>	}
2069	>	}
2070	>
2071	>	/**
2072	>	* A weaker form of assertCollectionsEquals which does not insist
2073	>	* that the two collections satisfy Object#equals(Object), since
2074	>	* they may use identity semantics as Deques do.
2075	>	*/
2076	>	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2077	>	if (x instanceof List || x instanceof Set)
2078	>	assertCollectionsEquals(x, y);
2079	>	else {
2080	>	assertEquals(x.isEmpty(), y.isEmpty());
2081	>	assertEquals(x.size(), y.size());
2082	>	assertEquals(new HashSet(x), new HashSet(y));
2083	>	if (x instanceof Deque) {
2084	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2085	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2086	>	y.toArray(new Object[0])));
2087		}
2088		}
2089		}
253	–
2090		}

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