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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 1.253 by jsr166, Fri Feb 22 19:27:47 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	<	* Flag set true if any threadAssert methods fail
212	>	* The number of milliseconds that tests are permitted for
213	>	* execution without being reported, when profileTests is set.
214		*/
215	<	protected volatile boolean threadFailed;
215	>	private static final long profileThreshold =
216	>	Long.getLong("jsr166.profileThreshold", 100);
217
218		/**
219	<	* Initialize test to indicat that no thread assertions have failed
219	>	* The number of repetitions per test (for tickling rare bugs).
220		*/
221	<	public void setUp() {
222	<	threadFailed = false;
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	<	* Trigger test case failure if any thread assertions have failed
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	<	public void tearDown() {
255	<	assertFalse(threadFailed);
254	>	private static final float delayFactor = delayFactor();
255	>
256	>	private static float delayFactor() {
257	>	float x;
258	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
259	>	return x;
260	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
261	>	return x;
262	>	String prop = System.getProperty("java.vm.version");
263	>	if (prop != null && prop.matches(".*debug.*"))
264	>	return 4.0f; // How much slower is fastdebug than product?!
265	>	return 1.0f;
266	>	}
267	>
268	>	public JSR166TestCase() { super(); }
269	>	public JSR166TestCase(String name) { super(name); }
270	>
271	>	/**
272	>	* A filter for tests to run, matching strings of the form
273	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
274	>	* Usefully combined with jsr166.runsPerTest.
275	>	*/
276	>	private static final Pattern methodFilter = methodFilter();
277	>
278	>	private static Pattern methodFilter() {
279	>	String regex = System.getProperty("jsr166.methodFilter");
280	>	return (regex == null) ? null : Pattern.compile(regex);
281		}
282
283	+	// Instrumentation to debug very rare, but very annoying hung test runs.
284	+	static volatile TestCase currentTestCase;
285	+	// static volatile int currentRun = 0;
286	+	static {
287	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
288	+	// Avoid spurious reports with enormous runsPerTest.
289	+	// A single test case run should never take more than 1 second.
290	+	// But let's cap it at the high end too ...
291	+	final int timeoutMinutes =
292	+	Math.min(15, Math.max(runsPerTest / 60, 1));
293	+	for (TestCase lastTestCase = currentTestCase;;) {
294	+	try { MINUTES.sleep(timeoutMinutes); }
295	+	catch (InterruptedException unexpected) { break; }
296	+	if (lastTestCase == currentTestCase) {
297	+	System.err.printf(
298	+	"Looks like we're stuck running test: %s%n",
299	+	lastTestCase);
300	+	//                     System.err.printf(
301	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
302	+	//                         lastTestCase, currentRun, runsPerTest);
303	+	//                     System.err.println("availableProcessors=" +
304	+	//                         Runtime.getRuntime().availableProcessors());
305	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
306	+	dumpTestThreads();
307	+	// one stack dump is probably enough; more would be spam
308	+	break;
309	+	}
310	+	lastTestCase = currentTestCase;
311	+	}}};
312	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
313	+	thread.setDaemon(true);
314	+	thread.start();
315	+	}
316	+
317	+	//     public static String cpuModel() {
318	+	//         try {
319	+	//             java.util.regex.Matcher matcher
320	+	//               = Pattern.compile("model name\\s*: (.*)")
321	+	//                 .matcher(new String(
322	+	//                     java.nio.file.Files.readAllBytes(
323	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
324	+	//             matcher.find();
325	+	//             return matcher.group(1);
326	+	//         } catch (Exception ex) { return null; }
327	+	//     }
328	+
329	+	public void runBare() throws Throwable {
330	+	currentTestCase = this;
331	+	if (methodFilter == null
332	+	|| methodFilter.matcher(toString()).find())
333	+	super.runBare();
334	+	}
335	+
336	+	protected void runTest() throws Throwable {
337	+	for (int i = 0; i < runsPerTest; i++) {
338	+	// currentRun = i;
339	+	if (profileTests)
340	+	runTestProfiled();
341	+	else
342	+	super.runTest();
343	+	}
344	+	}
345	+
346	+	protected void runTestProfiled() throws Throwable {
347	+	for (int i = 0; i < 2; i++) {
348	+	long startTime = System.nanoTime();
349	+	super.runTest();
350	+	long elapsedMillis = millisElapsedSince(startTime);
351	+	if (elapsedMillis < profileThreshold)
352	+	break;
353	+	// Never report first run of any test; treat it as a
354	+	// warmup run, notably to trigger all needed classloading,
355	+	if (i > 0)
356	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
357	+	}
358	+	}
359	+
360	+	/**
361	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
362	+	*/
363	+	public static void main(String[] args) {
364	+	main(suite(), args);
365	+	}
366	+
367	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
368	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
369	+	long runTime;
370	+	public void startTest(Test test) {}
371	+	protected void printHeader(long runTime) {
372	+	this.runTime = runTime; // defer printing for later
373	+	}
374	+	protected void printFooter(TestResult result) {
375	+	if (result.wasSuccessful()) {
376	+	getWriter().println("OK (" + result.runCount() + " tests)"
377	+	+ "  Time: " + elapsedTimeAsString(runTime));
378	+	} else {
379	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
380	+	super.printFooter(result);
381	+	}
382	+	}
383	+	}
384	+
385	+	/**
386	+	* Returns a TestRunner that doesn't bother with unnecessary
387	+	* fluff, like printing a "." for each test case.
388	+	*/
389	+	static junit.textui.TestRunner newPithyTestRunner() {
390	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
391	+	runner.setPrinter(new PithyResultPrinter(System.out));
392	+	return runner;
393	+	}
394	+
395	+	/**
396	+	* Runs all unit tests in the given test suite.
397	+	* Actual behavior influenced by jsr166.* system properties.
398	+	*/
399	+	static void main(Test suite, String[] args) {
400	+	if (useSecurityManager) {
401	+	System.err.println("Setting a permissive security manager");
402	+	Policy.setPolicy(permissivePolicy());
403	+	System.setSecurityManager(new SecurityManager());
404	+	}
405	+	for (int i = 0; i < suiteRuns; i++) {
406	+	TestResult result = newPithyTestRunner().doRun(suite);
407	+	if (!result.wasSuccessful())
408	+	System.exit(1);
409	+	System.gc();
410	+	System.runFinalization();
411	+	}
412	+	}
413	+
414	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
415	+	TestSuite suite = new TestSuite();
416	+	for (Object suiteOrClass : suiteOrClasses) {
417	+	if (suiteOrClass instanceof TestSuite)
418	+	suite.addTest((TestSuite) suiteOrClass);
419	+	else if (suiteOrClass instanceof Class)
420	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
421	+	else
422	+	throw new ClassCastException("not a test suite or class");
423	+	}
424	+	return suite;
425	+	}
426	+
427	+	public static void addNamedTestClasses(TestSuite suite,
428	+	String... testClassNames) {
429	+	for (String testClassName : testClassNames) {
430	+	try {
431	+	Class<?> testClass = Class.forName(testClassName);
432	+	Method m = testClass.getDeclaredMethod("suite");
433	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
434	+	} catch (ReflectiveOperationException e) {
435	+	throw new AssertionError("Missing test class", e);
436	+	}
437	+	}
438	+	}
439	+
440	+	public static final double JAVA_CLASS_VERSION;
441	+	public static final String JAVA_SPECIFICATION_VERSION;
442	+	static {
443	+	try {
444	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
445	+	new java.security.PrivilegedAction<Double>() {
446	+	public Double run() {
447	+	return Double.valueOf(System.getProperty("java.class.version"));}});
448	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
449	+	new java.security.PrivilegedAction<String>() {
450	+	public String run() {
451	+	return System.getProperty("java.specification.version");}});
452	+	} catch (Throwable t) {
453	+	throw new Error(t);
454	+	}
455	+	}
456	+
457	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
458	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
459	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
460	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
461	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
462	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
463	+	public static boolean atLeastJava12() { return JAVA_CLASS_VERSION >= 56.0; }
464	+	public static boolean atLeastJava13() { return JAVA_CLASS_VERSION >= 57.0; }
465	+	public static boolean atLeastJava14() { return JAVA_CLASS_VERSION >= 58.0; }
466	+	public static boolean atLeastJava15() { return JAVA_CLASS_VERSION >= 59.0; }
467	+	public static boolean atLeastJava16() { return JAVA_CLASS_VERSION >= 60.0; }
468	+	public static boolean atLeastJava17() { return JAVA_CLASS_VERSION >= 61.0; }
469	+
470	+	/**
471	+	* Collects all JSR166 unit tests as one suite.
472	+	*/
473	+	public static Test suite() {
474	+	// Java7+ test classes
475	+	TestSuite suite = newTestSuite(
476	+	ForkJoinPoolTest.suite(),
477	+	ForkJoinTaskTest.suite(),
478	+	RecursiveActionTest.suite(),
479	+	RecursiveTaskTest.suite(),
480	+	LinkedTransferQueueTest.suite(),
481	+	PhaserTest.suite(),
482	+	ThreadLocalRandomTest.suite(),
483	+	AbstractExecutorServiceTest.suite(),
484	+	AbstractQueueTest.suite(),
485	+	AbstractQueuedSynchronizerTest.suite(),
486	+	AbstractQueuedLongSynchronizerTest.suite(),
487	+	ArrayBlockingQueueTest.suite(),
488	+	ArrayDequeTest.suite(),
489	+	ArrayListTest.suite(),
490	+	AtomicBooleanTest.suite(),
491	+	AtomicIntegerArrayTest.suite(),
492	+	AtomicIntegerFieldUpdaterTest.suite(),
493	+	AtomicIntegerTest.suite(),
494	+	AtomicLongArrayTest.suite(),
495	+	AtomicLongFieldUpdaterTest.suite(),
496	+	AtomicLongTest.suite(),
497	+	AtomicMarkableReferenceTest.suite(),
498	+	AtomicReferenceArrayTest.suite(),
499	+	AtomicReferenceFieldUpdaterTest.suite(),
500	+	AtomicReferenceTest.suite(),
501	+	AtomicStampedReferenceTest.suite(),
502	+	ConcurrentHashMapTest.suite(),
503	+	ConcurrentLinkedDequeTest.suite(),
504	+	ConcurrentLinkedQueueTest.suite(),
505	+	ConcurrentSkipListMapTest.suite(),
506	+	ConcurrentSkipListSubMapTest.suite(),
507	+	ConcurrentSkipListSetTest.suite(),
508	+	ConcurrentSkipListSubSetTest.suite(),
509	+	CopyOnWriteArrayListTest.suite(),
510	+	CopyOnWriteArraySetTest.suite(),
511	+	CountDownLatchTest.suite(),
512	+	CountedCompleterTest.suite(),
513	+	CyclicBarrierTest.suite(),
514	+	DelayQueueTest.suite(),
515	+	EntryTest.suite(),
516	+	ExchangerTest.suite(),
517	+	ExecutorsTest.suite(),
518	+	ExecutorCompletionServiceTest.suite(),
519	+	FutureTaskTest.suite(),
520	+	LinkedBlockingDequeTest.suite(),
521	+	LinkedBlockingQueueTest.suite(),
522	+	LinkedListTest.suite(),
523	+	LockSupportTest.suite(),
524	+	PriorityBlockingQueueTest.suite(),
525	+	PriorityQueueTest.suite(),
526	+	ReentrantLockTest.suite(),
527	+	ReentrantReadWriteLockTest.suite(),
528	+	ScheduledExecutorTest.suite(),
529	+	ScheduledExecutorSubclassTest.suite(),
530	+	SemaphoreTest.suite(),
531	+	SynchronousQueueTest.suite(),
532	+	SystemTest.suite(),
533	+	ThreadLocalTest.suite(),
534	+	ThreadPoolExecutorTest.suite(),
535	+	ThreadPoolExecutorSubclassTest.suite(),
536	+	ThreadTest.suite(),
537	+	TimeUnitTest.suite(),
538	+	TreeMapTest.suite(),
539	+	TreeSetTest.suite(),
540	+	TreeSubMapTest.suite(),
541	+	TreeSubSetTest.suite(),
542	+	VectorTest.suite());
543	+
544	+	// Java8+ test classes
545	+	if (atLeastJava8()) {
546	+	String[] java8TestClassNames = {
547	+	"ArrayDeque8Test",
548	+	"Atomic8Test",
549	+	"CompletableFutureTest",
550	+	"ConcurrentHashMap8Test",
551	+	"CountedCompleter8Test",
552	+	"DoubleAccumulatorTest",
553	+	"DoubleAdderTest",
554	+	"ForkJoinPool8Test",
555	+	"ForkJoinTask8Test",
556	+	"HashMapTest",
557	+	"LinkedBlockingDeque8Test",
558	+	"LinkedBlockingQueue8Test",
559	+	"LinkedHashMapTest",
560	+	"LongAccumulatorTest",
561	+	"LongAdderTest",
562	+	"SplittableRandomTest",
563	+	"StampedLockTest",
564	+	"SubmissionPublisherTest",
565	+	"ThreadLocalRandom8Test",
566	+	"TimeUnit8Test",
567	+	};
568	+	addNamedTestClasses(suite, java8TestClassNames);
569	+	}
570	+
571	+	// Java9+ test classes
572	+	if (atLeastJava9()) {
573	+	String[] java9TestClassNames = {
574	+	"AtomicBoolean9Test",
575	+	"AtomicInteger9Test",
576	+	"AtomicIntegerArray9Test",
577	+	"AtomicLong9Test",
578	+	"AtomicLongArray9Test",
579	+	"AtomicReference9Test",
580	+	"AtomicReferenceArray9Test",
581	+	"ExecutorCompletionService9Test",
582	+	"ForkJoinPool9Test",
583	+	};
584	+	addNamedTestClasses(suite, java9TestClassNames);
585	+	}
586	+
587	+	return suite;
588	+	}
589	+
590	+	/** Returns list of junit-style test method names in given class. */
591	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
592	+	Method[] methods = testClass.getDeclaredMethods();
593	+	ArrayList<String> names = new ArrayList<>(methods.length);
594	+	for (Method method : methods) {
595	+	if (method.getName().startsWith("test")
596	+	&& Modifier.isPublic(method.getModifiers())
597	+	// method.getParameterCount() requires jdk8+
598	+	&& method.getParameterTypes().length == 0) {
599	+	names.add(method.getName());
600	+	}
601	+	}
602	+	return names;
603	+	}
604	+
605	+	/**
606	+	* Returns junit-style testSuite for the given test class, but
607	+	* parameterized by passing extra data to each test.
608	+	*/
609	+	public static <ExtraData> Test parameterizedTestSuite
610	+	(Class<? extends JSR166TestCase> testClass,
611	+	Class<ExtraData> dataClass,
612	+	ExtraData data) {
613	+	try {
614	+	TestSuite suite = new TestSuite();
615	+	Constructor c =
616	+	testClass.getDeclaredConstructor(dataClass, String.class);
617	+	for (String methodName : testMethodNames(testClass))
618	+	suite.addTest((Test) c.newInstance(data, methodName));
619	+	return suite;
620	+	} catch (ReflectiveOperationException e) {
621	+	throw new AssertionError(e);
622	+	}
623	+	}
624	+
625	+	/**
626	+	* Returns junit-style testSuite for the jdk8 extension of the
627	+	* given test class, but parameterized by passing extra data to
628	+	* each test.  Uses reflection to allow compilation in jdk7.
629	+	*/
630	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
631	+	(Class<? extends JSR166TestCase> testClass,
632	+	Class<ExtraData> dataClass,
633	+	ExtraData data) {
634	+	if (atLeastJava8()) {
635	+	String name = testClass.getName();
636	+	String name8 = name.replaceAll("Test$", "8Test");
637	+	if (name.equals(name8)) throw new AssertionError(name);
638	+	try {
639	+	return (Test)
640	+	Class.forName(name8)
641	+	.getMethod("testSuite", dataClass)
642	+	.invoke(null, data);
643	+	} catch (ReflectiveOperationException e) {
644	+	throw new AssertionError(e);
645	+	}
646	+	} else {
647	+	return new TestSuite();
648	+	}
649	+	}
650	+
651	+	// Delays for timing-dependent tests, in milliseconds.
652	+
653	+	public static long SHORT_DELAY_MS;
654	+	public static long SMALL_DELAY_MS;
655	+	public static long MEDIUM_DELAY_MS;
656	+	public static long LONG_DELAY_MS;
657	+
658	+	private static final long RANDOM_TIMEOUT;
659	+	private static final long RANDOM_EXPIRED_TIMEOUT;
660	+	private static final TimeUnit RANDOM_TIMEUNIT;
661	+	static {
662	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
663	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
664	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
665	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
666	+	TimeUnit[] timeUnits = TimeUnit.values();
667	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
668	+	}
669	+
670	+	/**
671	+	* Returns a timeout for use when any value at all will do.
672	+	*/
673	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
674	+
675	+	/**
676	+	* Returns a timeout that means "no waiting", i.e. not positive.
677	+	*/
678	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
679	+
680	+	/**
681	+	* Returns a random non-null TimeUnit.
682	+	*/
683	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
684	+
685	+	/**
686	+	* Returns the shortest timed delay. This can be scaled up for
687	+	* slow machines using the jsr166.delay.factor system property,
688	+	* or via jtreg's -timeoutFactor: flag.
689	+	* http://openjdk.java.net/jtreg/command-help.html
690	+	*/
691	+	protected long getShortDelay() {
692	+	return (long) (50 * delayFactor);
693	+	}
694	+
695	+	/**
696	+	* Sets delays as multiples of SHORT_DELAY.
697	+	*/
698	+	protected void setDelays() {
699	+	SHORT_DELAY_MS = getShortDelay();
700	+	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
701	+	MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
702	+	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
703	+	}
704	+
705	+	private static final long TIMEOUT_DELAY_MS
706	+	= (long) (12.0 * Math.cbrt(delayFactor));
707	+
708	+	/**
709	+	* Returns a timeout in milliseconds to be used in tests that verify
710	+	* that operations block or time out.  We want this to be longer
711	+	* than the OS scheduling quantum, but not too long, so don't scale
712	+	* linearly with delayFactor; we use "crazy" cube root instead.
713	+	*/
714	+	static long timeoutMillis() {
715	+	return TIMEOUT_DELAY_MS;
716	+	}
717	+
718	+	/**
719	+	* Returns a new Date instance representing a time at least
720	+	* delayMillis milliseconds in the future.
721	+	*/
722	+	Date delayedDate(long delayMillis) {
723	+	// Add 1 because currentTimeMillis is known to round into the past.
724	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
725	+	}
726	+
727	+	/**
728	+	* The first exception encountered if any threadAssertXXX method fails.
729	+	*/
730	+	private final AtomicReference<Throwable> threadFailure
731	+	= new AtomicReference<>(null);
732	+
733	+	/**
734	+	* Records an exception so that it can be rethrown later in the test
735	+	* harness thread, triggering a test case failure.  Only the first
736	+	* failure is recorded; subsequent calls to this method from within
737	+	* the same test have no effect.
738	+	*/
739	+	public void threadRecordFailure(Throwable t) {
740	+	System.err.println(t);
741	+	dumpTestThreads();
742	+	threadFailure.compareAndSet(null, t);
743	+	}
744	+
745	+	public void setUp() {
746	+	setDelays();
747	+	}
748	+
749	+	void tearDownFail(String format, Object... args) {
750	+	String msg = toString() + ": " + String.format(format, args);
751	+	System.err.println(msg);
752	+	dumpTestThreads();
753	+	throw new AssertionError(msg);
754	+	}
755	+
756	+	/**
757	+	* Extra checks that get done for all test cases.
758	+	*
759	+	* Triggers test case failure if any thread assertions have failed,
760	+	* by rethrowing, in the test harness thread, any exception recorded
761	+	* earlier by threadRecordFailure.
762	+	*
763	+	* Triggers test case failure if interrupt status is set in the main thread.
764	+	*/
765	+	public void tearDown() throws Exception {
766	+	Throwable t = threadFailure.getAndSet(null);
767	+	if (t != null) {
768	+	if (t instanceof Error)
769	+	throw (Error) t;
770	+	else if (t instanceof RuntimeException)
771	+	throw (RuntimeException) t;
772	+	else if (t instanceof Exception)
773	+	throw (Exception) t;
774	+	else
775	+	throw new AssertionError(t.toString(), t);
776	+	}
777	+
778	+	if (Thread.interrupted())
779	+	tearDownFail("interrupt status set in main thread");
780	+
781	+	checkForkJoinPoolThreadLeaks();
782	+	}
783	+
784	+	/**
785	+	* Finds missing PoolCleaners
786	+	*/
787	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
788	+	Thread[] survivors = new Thread[7];
789	+	int count = Thread.enumerate(survivors);
790	+	for (int i = 0; i < count; i++) {
791	+	Thread thread = survivors[i];
792	+	String name = thread.getName();
793	+	if (name.startsWith("ForkJoinPool-")) {
794	+	// give thread some time to terminate
795	+	thread.join(LONG_DELAY_MS);
796	+	if (thread.isAlive())
797	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
798	+	thread);
799	+	}
800	+	}
801	+
802	+	if (!ForkJoinPool.commonPool()
803	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
804	+	tearDownFail("ForkJoin common pool thread stuck");
805	+	}
806	+
807	+	/**
808	+	* Just like fail(reason), but additionally recording (using
809	+	* threadRecordFailure) any AssertionError thrown, so that the
810	+	* current testcase will fail.
811	+	*/
812		public void threadFail(String reason) {
813	<	threadFailed = true;
814	<	fail(reason);
813	>	try {
814	>	fail(reason);
815	>	} catch (AssertionError fail) {
816	>	threadRecordFailure(fail);
817	>	throw fail;
818	>	}
819		}
820
821	+	/**
822	+	* Just like assertTrue(b), but additionally recording (using
823	+	* threadRecordFailure) any AssertionError thrown, so that the
824	+	* current testcase will fail.
825	+	*/
826		public void threadAssertTrue(boolean b) {
827	<	if (!b) {
83	<	threadFailed = true;
827	>	try {
828		assertTrue(b);
829	+	} catch (AssertionError fail) {
830	+	threadRecordFailure(fail);
831	+	throw fail;
832		}
833		}
834	+
835	+	/**
836	+	* Just like assertFalse(b), but additionally recording (using
837	+	* threadRecordFailure) any AssertionError thrown, so that the
838	+	* current testcase will fail.
839	+	*/
840		public void threadAssertFalse(boolean b) {
841	<	if (b) {
89	<	threadFailed = true;
841	>	try {
842		assertFalse(b);
843	+	} catch (AssertionError fail) {
844	+	threadRecordFailure(fail);
845	+	throw fail;
846		}
847		}
848	+
849	+	/**
850	+	* Just like assertNull(x), but additionally recording (using
851	+	* threadRecordFailure) any AssertionError thrown, so that the
852	+	* current testcase will fail.
853	+	*/
854		public void threadAssertNull(Object x) {
855	<	if (x != null) {
95	<	threadFailed = true;
855	>	try {
856		assertNull(x);
857	+	} catch (AssertionError fail) {
858	+	threadRecordFailure(fail);
859	+	throw fail;
860		}
861		}
862	+
863	+	/**
864	+	* Just like assertEquals(x, y), but additionally recording (using
865	+	* threadRecordFailure) any AssertionError thrown, so that the
866	+	* current testcase will fail.
867	+	*/
868		public void threadAssertEquals(long x, long y) {
869	<	if (x != y) {
101	<	threadFailed = true;
869	>	try {
870		assertEquals(x, y);
871	+	} catch (AssertionError fail) {
872	+	threadRecordFailure(fail);
873	+	throw fail;
874		}
875		}
876	+
877	+	/**
878	+	* Just like assertEquals(x, y), but additionally recording (using
879	+	* threadRecordFailure) any AssertionError thrown, so that the
880	+	* current testcase will fail.
881	+	*/
882		public void threadAssertEquals(Object x, Object y) {
883	<	if (x != y && (x == null || !x.equals(y))) {
107	<	threadFailed = true;
883	>	try {
884		assertEquals(x, y);
885	+	} catch (AssertionError fail) {
886	+	threadRecordFailure(fail);
887	+	throw fail;
888	+	} catch (Throwable fail) {
889	+	threadUnexpectedException(fail);
890	+	}
891	+	}
892	+
893	+	/**
894	+	* Just like assertSame(x, y), but additionally recording (using
895	+	* threadRecordFailure) any AssertionError thrown, so that the
896	+	* current testcase will fail.
897	+	*/
898	+	public void threadAssertSame(Object x, Object y) {
899	+	try {
900	+	assertSame(x, y);
901	+	} catch (AssertionError fail) {
902	+	threadRecordFailure(fail);
903	+	throw fail;
904	+	}
905	+	}
906	+
907	+	/**
908	+	* Calls threadFail with message "should throw exception".
909	+	*/
910	+	public void threadShouldThrow() {
911	+	threadFail("should throw exception");
912	+	}
913	+
914	+	/**
915	+	* Calls threadFail with message "should throw" + exceptionName.
916	+	*/
917	+	public void threadShouldThrow(String exceptionName) {
918	+	threadFail("should throw " + exceptionName);
919	+	}
920	+
921	+	/**
922	+	* Records the given exception using {@link #threadRecordFailure},
923	+	* then rethrows the exception, wrapping it in an AssertionError
924	+	* if necessary.
925	+	*/
926	+	public void threadUnexpectedException(Throwable t) {
927	+	threadRecordFailure(t);
928	+	t.printStackTrace();
929	+	if (t instanceof RuntimeException)
930	+	throw (RuntimeException) t;
931	+	else if (t instanceof Error)
932	+	throw (Error) t;
933	+	else
934	+	throw new AssertionError("unexpected exception: " + t, t);
935	+	}
936	+
937	+	/**
938	+	* Delays, via Thread.sleep, for the given millisecond delay, but
939	+	* if the sleep is shorter than specified, may re-sleep or yield
940	+	* until time elapses.  Ensures that the given time, as measured
941	+	* by System.nanoTime(), has elapsed.
942	+	*/
943	+	static void delay(long millis) throws InterruptedException {
944	+	long nanos = millis * (1000 * 1000);
945	+	final long wakeupTime = System.nanoTime() + nanos;
946	+	do {
947	+	if (millis > 0L)
948	+	Thread.sleep(millis);
949	+	else // too short to sleep
950	+	Thread.yield();
951	+	nanos = wakeupTime - System.nanoTime();
952	+	millis = nanos / (1000 * 1000);
953	+	} while (nanos >= 0L);
954	+	}
955	+
956	+	/**
957	+	* Allows use of try-with-resources with per-test thread pools.
958	+	*/
959	+	class PoolCleaner implements AutoCloseable {
960	+	private final ExecutorService pool;
961	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
962	+	public void close() { joinPool(pool); }
963	+	}
964	+
965	+	/**
966	+	* An extension of PoolCleaner that has an action to release the pool.
967	+	*/
968	+	class PoolCleanerWithReleaser extends PoolCleaner {
969	+	private final Runnable releaser;
970	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
971	+	super(pool);
972	+	this.releaser = releaser;
973	+	}
974	+	public void close() {
975	+	try {
976	+	releaser.run();
977	+	} finally {
978	+	super.close();
979	+	}
980		}
981		}
982
983	+	PoolCleaner cleaner(ExecutorService pool) {
984	+	return new PoolCleaner(pool);
985	+	}
986	+
987	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
988	+	return new PoolCleanerWithReleaser(pool, releaser);
989	+	}
990	+
991	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
992	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
993	+	}
994	+
995	+	Runnable releaser(final CountDownLatch latch) {
996	+	return new Runnable() { public void run() {
997	+	do { latch.countDown(); }
998	+	while (latch.getCount() > 0);
999	+	}};
1000	+	}
1001	+
1002	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1003	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1004	+	}
1005	+
1006	+	Runnable releaser(final AtomicBoolean flag) {
1007	+	return new Runnable() { public void run() { flag.set(true); }};
1008	+	}
1009	+
1010		/**
1011	<	* Wait out termination of a thread pool or fail doing so
1011	>	* Waits out termination of a thread pool or fails doing so.
1012		*/
1013	<	public void joinPool(ExecutorService exec) {
1013	>	void joinPool(ExecutorService pool) {
1014		try {
1015	<	exec.shutdown();
1016	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1017	<	} catch(InterruptedException ie) {
1018	<	fail("unexpected exception");
1015	>	pool.shutdown();
1016	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1017	>	try {
1018	>	threadFail("ExecutorService " + pool +
1019	>	" did not terminate in a timely manner");
1020	>	} finally {
1021	>	// last resort, for the benefit of subsequent tests
1022	>	pool.shutdownNow();
1023	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1024	>	}
1025	>	}
1026	>	} catch (SecurityException ok) {
1027	>	// Allowed in case test doesn't have privs
1028	>	} catch (InterruptedException fail) {
1029	>	threadFail("Unexpected InterruptedException");
1030	>	}
1031	>	}
1032	>
1033	>	/**
1034	>	* Like Runnable, but with the freedom to throw anything.
1035	>	* junit folks had the same idea:
1036	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1037	>	*/
1038	>	interface Action { public void run() throws Throwable; }
1039	>
1040	>	/**
1041	>	* Runs all the given actions in parallel, failing if any fail.
1042	>	* Useful for running multiple variants of tests that are
1043	>	* necessarily individually slow because they must block.
1044	>	*/
1045	>	void testInParallel(Action ... actions) {
1046	>	ExecutorService pool = Executors.newCachedThreadPool();
1047	>	try (PoolCleaner cleaner = cleaner(pool)) {
1048	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1049	>	for (final Action action : actions)
1050	>	futures.add(pool.submit(new CheckedRunnable() {
1051	>	public void realRun() throws Throwable { action.run();}}));
1052	>	for (Future<?> future : futures)
1053	>	try {
1054	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1055	>	} catch (ExecutionException ex) {
1056	>	threadUnexpectedException(ex.getCause());
1057	>	} catch (Exception ex) {
1058	>	threadUnexpectedException(ex);
1059	>	}
1060	>	}
1061	>	}
1062	>
1063	>	/**
1064	>	* A debugging tool to print stack traces of most threads, as jstack does.
1065	>	* Uninteresting threads are filtered out.
1066	>	*/
1067	>	static void dumpTestThreads() {
1068	>	SecurityManager sm = System.getSecurityManager();
1069	>	if (sm != null) {
1070	>	try {
1071	>	System.setSecurityManager(null);
1072	>	} catch (SecurityException giveUp) {
1073	>	return;
1074	>	}
1075	>	}
1076	>
1077	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1078	>	System.err.println("------ stacktrace dump start ------");
1079	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1080	>	final String name = info.getThreadName();
1081	>	String lockName;
1082	>	if ("Signal Dispatcher".equals(name))
1083	>	continue;
1084	>	if ("Reference Handler".equals(name)
1085	>	&& (lockName = info.getLockName()) != null
1086	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1087	>	continue;
1088	>	if ("Finalizer".equals(name)
1089	>	&& (lockName = info.getLockName()) != null
1090	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1091	>	continue;
1092	>	if ("checkForWedgedTest".equals(name))
1093	>	continue;
1094	>	System.err.print(info);
1095	>	}
1096	>	System.err.println("------ stacktrace dump end ------");
1097	>
1098	>	if (sm != null) System.setSecurityManager(sm);
1099	>	}
1100	>
1101	>	/**
1102	>	* Checks that thread eventually enters the expected blocked thread state.
1103	>	*/
1104	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1105	>	// always sleep at least 1 ms, with high probability avoiding
1106	>	// transitory states
1107	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1108	>	try { delay(1); }
1109	>	catch (InterruptedException fail) {
1110	>	throw new AssertionError("Unexpected InterruptedException", fail);
1111	>	}
1112	>	Thread.State s = thread.getState();
1113	>	if (s == expected)
1114	>	return;
1115	>	else if (s == Thread.State.TERMINATED)
1116	>	fail("Unexpected thread termination");
1117		}
1118	+	fail("timed out waiting for thread to enter thread state " + expected);
1119		}
1120
1121	<	public static final long SHORT_DELAY_MS =   100;
1122	<	public static final long SMALL_DELAY_MS =   500;
1123	<	public static final long MEDIUM_DELAY_MS = 1000;
1124	<	public static final long LONG_DELAY_MS =   5000;
1121	>	/**
1122	>	* Checks that future.get times out, with the default timeout of
1123	>	* {@code timeoutMillis()}.
1124	>	*/
1125	>	void assertFutureTimesOut(Future future) {
1126	>	assertFutureTimesOut(future, timeoutMillis());
1127	>	}
1128
1129	+	/**
1130	+	* Checks that future.get times out, with the given millisecond timeout.
1131	+	*/
1132	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1133	+	long startTime = System.nanoTime();
1134	+	try {
1135	+	future.get(timeoutMillis, MILLISECONDS);
1136	+	shouldThrow();
1137	+	} catch (TimeoutException success) {
1138	+	} catch (Exception fail) {
1139	+	threadUnexpectedException(fail);
1140	+	} finally { future.cancel(true); }
1141	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1142	+	}
1143	+
1144	+	/**
1145	+	* Fails with message "should throw exception".
1146	+	*/
1147	+	public void shouldThrow() {
1148	+	fail("Should throw exception");
1149	+	}
1150	+
1151	+	/**
1152	+	* Fails with message "should throw " + exceptionName.
1153	+	*/
1154	+	public void shouldThrow(String exceptionName) {
1155	+	fail("Should throw " + exceptionName);
1156	+	}
1157	+
1158	+	/**
1159	+	* The maximum number of consecutive spurious wakeups we should
1160	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1161	+	*/
1162	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1163
1164		/**
1165		* The number of elements to place in collections, arrays, etc.
#	Line 134 | Line 1168 | public class JSR166TestCase extends Test
1168
1169		// Some convenient Integer constants
1170
1171	<	public static final Integer zero = new Integer(0);
1172	<	public static final Integer one = new Integer(1);
1173	<	public static final Integer two = new Integer(2);
1174	<	public static final Integer three  = new Integer(3);
1171	>	public static final Integer zero  = new Integer(0);
1172	>	public static final Integer one   = new Integer(1);
1173	>	public static final Integer two   = new Integer(2);
1174	>	public static final Integer three = new Integer(3);
1175		public static final Integer four  = new Integer(4);
1176		public static final Integer five  = new Integer(5);
1177	<	public static final Integer six = new Integer(6);
1177	>	public static final Integer six   = new Integer(6);
1178		public static final Integer seven = new Integer(7);
1179		public static final Integer eight = new Integer(8);
1180	<	public static final Integer nine = new Integer(9);
1180	>	public static final Integer nine  = new Integer(9);
1181		public static final Integer m1  = new Integer(-1);
1182		public static final Integer m2  = new Integer(-2);
1183		public static final Integer m3  = new Integer(-3);
1184	<	public static final Integer m4 = new Integer(-4);
1185	<	public static final Integer m5 = new Integer(-5);
1184	>	public static final Integer m4  = new Integer(-4);
1185	>	public static final Integer m5  = new Integer(-5);
1186	>	public static final Integer m6  = new Integer(-6);
1187		public static final Integer m10 = new Integer(-10);
1188
1189	+	/**
1190	+	* Runs Runnable r with a security policy that permits precisely
1191	+	* the specified permissions.  If there is no current security
1192	+	* manager, the runnable is run twice, both with and without a
1193	+	* security manager.  We require that any security manager permit
1194	+	* getPolicy/setPolicy.
1195	+	*/
1196	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1197	+	SecurityManager sm = System.getSecurityManager();
1198	+	if (sm == null) {
1199	+	r.run();
1200	+	}
1201	+	runWithSecurityManagerWithPermissions(r, permissions);
1202	+	}
1203
1204	<	// Some convenient Runnable classes
1204	>	/**
1205	>	* Runs Runnable r with a security policy that permits precisely
1206	>	* the specified permissions.  If there is no current security
1207	>	* manager, a temporary one is set for the duration of the
1208	>	* Runnable.  We require that any security manager permit
1209	>	* getPolicy/setPolicy.
1210	>	*/
1211	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1212	>	Permission... permissions) {
1213	>	SecurityManager sm = System.getSecurityManager();
1214	>	if (sm == null) {
1215	>	Policy savedPolicy = Policy.getPolicy();
1216	>	try {
1217	>	Policy.setPolicy(permissivePolicy());
1218	>	System.setSecurityManager(new SecurityManager());
1219	>	runWithSecurityManagerWithPermissions(r, permissions);
1220	>	} finally {
1221	>	System.setSecurityManager(null);
1222	>	Policy.setPolicy(savedPolicy);
1223	>	}
1224	>	} else {
1225	>	Policy savedPolicy = Policy.getPolicy();
1226	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1227	>	Policy.setPolicy(policy);
1228
1229	<	public static class NoOpRunnable implements Runnable {
1230	<	public void run() {}
1229	>	try {
1230	>	r.run();
1231	>	} finally {
1232	>	policy.addPermission(new SecurityPermission("setPolicy"));
1233	>	Policy.setPolicy(savedPolicy);
1234	>	}
1235	>	}
1236		}
1237
1238	<	public static class NoOpCallable implements Callable {
1239	<	public Object call() { return Boolean.TRUE; }
1238	>	/**
1239	>	* Runs a runnable without any permissions.
1240	>	*/
1241	>	public void runWithoutPermissions(Runnable r) {
1242	>	runWithPermissions(r);
1243		}
1244
1245	<	public class ShortRunnable implements Runnable {
1246	<	public void run() {
1247	<	try {
1248	<	Thread.sleep(SHORT_DELAY_MS);
1245	>	/**
1246	>	* A security policy where new permissions can be dynamically added
1247	>	* or all cleared.
1248	>	*/
1249	>	public static class AdjustablePolicy extends java.security.Policy {
1250	>	Permissions perms = new Permissions();
1251	>	AdjustablePolicy(Permission... permissions) {
1252	>	for (Permission permission : permissions)
1253	>	perms.add(permission);
1254	>	}
1255	>	void addPermission(Permission perm) { perms.add(perm); }
1256	>	void clearPermissions() { perms = new Permissions(); }
1257	>	public PermissionCollection getPermissions(CodeSource cs) {
1258	>	return perms;
1259	>	}
1260	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1261	>	return perms;
1262	>	}
1263	>	public boolean implies(ProtectionDomain pd, Permission p) {
1264	>	return perms.implies(p);
1265	>	}
1266	>	public void refresh() {}
1267	>	public String toString() {
1268	>	List<Permission> ps = new ArrayList<>();
1269	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1270	>	ps.add(e.nextElement());
1271	>	return "AdjustablePolicy with permissions " + ps;
1272	>	}
1273	>	}
1274	>
1275	>	/**
1276	>	* Returns a policy containing all the permissions we ever need.
1277	>	*/
1278	>	public static Policy permissivePolicy() {
1279	>	return new AdjustablePolicy
1280	>	// Permissions j.u.c. needs directly
1281	>	(new RuntimePermission("modifyThread"),
1282	>	new RuntimePermission("getClassLoader"),
1283	>	new RuntimePermission("setContextClassLoader"),
1284	>	// Permissions needed to change permissions!
1285	>	new SecurityPermission("getPolicy"),
1286	>	new SecurityPermission("setPolicy"),
1287	>	new RuntimePermission("setSecurityManager"),
1288	>	// Permissions needed by the junit test harness
1289	>	new RuntimePermission("accessDeclaredMembers"),
1290	>	new PropertyPermission("*", "read"),
1291	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1292	>	}
1293	>
1294	>	/**
1295	>	* Sleeps until the given time has elapsed.
1296	>	* Throws AssertionError if interrupted.
1297	>	*/
1298	>	static void sleep(long millis) {
1299	>	try {
1300	>	delay(millis);
1301	>	} catch (InterruptedException fail) {
1302	>	throw new AssertionError("Unexpected InterruptedException", fail);
1303	>	}
1304	>	}
1305	>
1306	>	/**
1307	>	* Spin-waits up to the specified number of milliseconds for the given
1308	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1309	>	* @param waitingForGodot if non-null, an additional condition to satisfy
1310	>	*/
1311	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1312	>	Callable<Boolean> waitingForGodot) {
1313	>	for (long startTime = 0L;;) {
1314	>	switch (thread.getState()) {
1315	>	default: break;
1316	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1317	>	try {
1318	>	if (waitingForGodot == null || waitingForGodot.call())
1319	>	return;
1320	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1321	>	break;
1322	>	case TERMINATED:
1323	>	fail("Unexpected thread termination");
1324		}
1325	<	catch(Exception e) {
1326	<	threadFail("unexpectedException");
1325	>
1326	>	if (startTime == 0L)
1327	>	startTime = System.nanoTime();
1328	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1329	>	assertTrue(thread.isAlive());
1330	>	if (waitingForGodot == null
1331	>	|| thread.getState() == Thread.State.RUNNABLE)
1332	>	fail("timed out waiting for thread to enter wait state");
1333	>	else
1334	>	fail("timed out waiting for condition, thread state="
1335	>	+ thread.getState());
1336		}
1337	+	Thread.yield();
1338		}
1339		}
1340
1341	<	public class ShortInterruptedRunnable implements Runnable {
1342	<	public void run() {
1343	<	try {
1344	<	Thread.sleep(SHORT_DELAY_MS);
1345	<	threadFail("should throw IE");
1346	<	}
1347	<	catch(InterruptedException success) {
1341	>	/**
1342	>	* Spin-waits up to the specified number of milliseconds for the given
1343	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1344	>	*/
1345	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1346	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1347	>	}
1348	>
1349	>	/**
1350	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1351	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1352	>	*/
1353	>	void waitForThreadToEnterWaitState(Thread thread) {
1354	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1355	>	}
1356	>
1357	>	/**
1358	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1359	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1360	>	* and additionally satisfy the given condition.
1361	>	*/
1362	>	void waitForThreadToEnterWaitState(Thread thread,
1363	>	Callable<Boolean> waitingForGodot) {
1364	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1365	>	}
1366	>
1367	>	/**
1368	>	* Returns the number of milliseconds since time given by
1369	>	* startNanoTime, which must have been previously returned from a
1370	>	* call to {@link System#nanoTime()}.
1371	>	*/
1372	>	static long millisElapsedSince(long startNanoTime) {
1373	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1374	>	}
1375	>
1376	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1377	>	//         long startTime = System.nanoTime();
1378	>	//         try {
1379	>	//             r.run();
1380	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1381	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1382	>	//             throw new AssertionError("did not return promptly");
1383	>	//     }
1384	>
1385	>	//     void assertTerminatesPromptly(Runnable r) {
1386	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1387	>	//     }
1388	>
1389	>	/**
1390	>	* Checks that timed f.get() returns the expected value, and does not
1391	>	* wait for the timeout to elapse before returning.
1392	>	*/
1393	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1394	>	long startTime = System.nanoTime();
1395	>	T actual = null;
1396	>	try {
1397	>	actual = f.get(timeoutMillis, MILLISECONDS);
1398	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1399	>	assertEquals(expectedValue, actual);
1400	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1401	>	throw new AssertionError("timed get did not return promptly");
1402	>	}
1403	>
1404	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1405	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1406	>	}
1407	>
1408	>	/**
1409	>	* Returns a new started daemon Thread running the given runnable.
1410	>	*/
1411	>	Thread newStartedThread(Runnable runnable) {
1412	>	Thread t = new Thread(runnable);
1413	>	t.setDaemon(true);
1414	>	t.start();
1415	>	return t;
1416	>	}
1417	>
1418	>	/**
1419	>	* Waits for the specified time (in milliseconds) for the thread
1420	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1421	>	* the thread (in the hope that it may terminate later) and fails.
1422	>	*/
1423	>	void awaitTermination(Thread t, long timeoutMillis) {
1424	>	try {
1425	>	t.join(timeoutMillis);
1426	>	} catch (InterruptedException fail) {
1427	>	threadUnexpectedException(fail);
1428	>	} finally {
1429	>	if (t.getState() != Thread.State.TERMINATED) {
1430	>	t.interrupt();
1431	>	threadFail("timed out waiting for thread to terminate");
1432		}
1433		}
1434		}
1435
1436	<	public class SmallRunnable implements Runnable {
1437	<	public void run() {
1436	>	/**
1437	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1438	>	* terminate (using {@link Thread#join(long)}), else interrupts
1439	>	* the thread (in the hope that it may terminate later) and fails.
1440	>	*/
1441	>	void awaitTermination(Thread t) {
1442	>	awaitTermination(t, LONG_DELAY_MS);
1443	>	}
1444	>
1445	>	// Some convenient Runnable classes
1446	>
1447	>	public abstract class CheckedRunnable implements Runnable {
1448	>	protected abstract void realRun() throws Throwable;
1449	>
1450	>	public final void run() {
1451		try {
1452	<	Thread.sleep(SMALL_DELAY_MS);
1453	<	}
1454	<	catch(Exception e) {
193	<	threadFail("unexpectedException");
1452	>	realRun();
1453	>	} catch (Throwable fail) {
1454	>	threadUnexpectedException(fail);
1455		}
1456		}
1457		}
1458
1459	<	public class SmallCallable implements Callable {
1460	<	public Object call() {
1459	>	public abstract class ThreadShouldThrow extends Thread {
1460	>	protected abstract void realRun() throws Throwable;
1461	>
1462	>	final Class<?> exceptionClass;
1463	>
1464	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1465	>	this.exceptionClass = exceptionClass;
1466	>	}
1467	>
1468	>	public final void run() {
1469		try {
1470	<	Thread.sleep(SMALL_DELAY_MS);
1471	<	}
1472	<	catch(Exception e) {
1473	<	threadFail("unexpectedException");
1470	>	realRun();
1471	>	} catch (Throwable t) {
1472	>	if (! exceptionClass.isInstance(t))
1473	>	threadUnexpectedException(t);
1474	>	return;
1475		}
1476	<	return Boolean.TRUE;
1476	>	threadShouldThrow(exceptionClass.getSimpleName());
1477		}
1478		}
1479
1480	<	public class SmallInterruptedRunnable implements Runnable {
1481	<	public void run() {
1480	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1481	>	protected abstract void realRun() throws Throwable;
1482	>
1483	>	public final void run() {
1484		try {
1485	<	Thread.sleep(SMALL_DELAY_MS);
1486	<	threadFail("should throw IE");
1485	>	realRun();
1486	>	} catch (InterruptedException success) {
1487	>	threadAssertFalse(Thread.interrupted());
1488	>	return;
1489	>	} catch (Throwable fail) {
1490	>	threadUnexpectedException(fail);
1491		}
1492	<	catch(InterruptedException success) {
1492	>	threadShouldThrow("InterruptedException");
1493	>	}
1494	>	}
1495	>
1496	>	public abstract class CheckedCallable<T> implements Callable<T> {
1497	>	protected abstract T realCall() throws Throwable;
1498	>
1499	>	public final T call() {
1500	>	try {
1501	>	return realCall();
1502	>	} catch (Throwable fail) {
1503	>	threadUnexpectedException(fail);
1504		}
1505	+	throw new AssertionError("unreached");
1506	+	}
1507	+	}
1508	+
1509	+	public static class NoOpRunnable implements Runnable {
1510	+	public void run() {}
1511	+	}
1512	+
1513	+	public static class NoOpCallable implements Callable {
1514	+	public Object call() { return Boolean.TRUE; }
1515	+	}
1516	+
1517	+	public static final String TEST_STRING = "a test string";
1518	+
1519	+	public static class StringTask implements Callable<String> {
1520	+	final String value;
1521	+	public StringTask() { this(TEST_STRING); }
1522	+	public StringTask(String value) { this.value = value; }
1523	+	public String call() { return value; }
1524	+	}
1525	+
1526	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1527	+	return new CheckedCallable<String>() {
1528	+	protected String realCall() {
1529	+	try {
1530	+	latch.await();
1531	+	} catch (InterruptedException quittingTime) {}
1532	+	return TEST_STRING;
1533	+	}};
1534	+	}
1535	+
1536	+	public Runnable countDowner(final CountDownLatch latch) {
1537	+	return new CheckedRunnable() {
1538	+	public void realRun() throws InterruptedException {
1539	+	latch.countDown();
1540	+	}};
1541	+	}
1542	+
1543	+	class LatchAwaiter extends CheckedRunnable {
1544	+	static final int NEW = 0;
1545	+	static final int RUNNING = 1;
1546	+	static final int DONE = 2;
1547	+	final CountDownLatch latch;
1548	+	int state = NEW;
1549	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1550	+	public void realRun() throws InterruptedException {
1551	+	state = 1;
1552	+	await(latch);
1553	+	state = 2;
1554	+	}
1555	+	}
1556	+
1557	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1558	+	return new LatchAwaiter(latch);
1559	+	}
1560	+
1561	+	public void await(CountDownLatch latch, long timeoutMillis) {
1562	+	boolean timedOut = false;
1563	+	try {
1564	+	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1565	+	} catch (Throwable fail) {
1566	+	threadUnexpectedException(fail);
1567	+	}
1568	+	if (timedOut)
1569	+	fail("timed out waiting for CountDownLatch for "
1570	+	+ (timeoutMillis/1000) + " sec");
1571	+	}
1572	+
1573	+	public void await(CountDownLatch latch) {
1574	+	await(latch, LONG_DELAY_MS);
1575	+	}
1576	+
1577	+	public void await(Semaphore semaphore) {
1578	+	boolean timedOut = false;
1579	+	try {
1580	+	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1581	+	} catch (Throwable fail) {
1582	+	threadUnexpectedException(fail);
1583	+	}
1584	+	if (timedOut)
1585	+	fail("timed out waiting for Semaphore for "
1586	+	+ (LONG_DELAY_MS/1000) + " sec");
1587	+	}
1588	+
1589	+	public void await(CyclicBarrier barrier) {
1590	+	try {
1591	+	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1592	+	} catch (Throwable fail) {
1593	+	threadUnexpectedException(fail);
1594	+	}
1595	+	}
1596	+
1597	+	//     /**
1598	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1599	+	//      */
1600	+	//     public void await(AtomicBoolean flag) {
1601	+	//         await(flag, LONG_DELAY_MS);
1602	+	//     }
1603	+
1604	+	//     /**
1605	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1606	+	//      */
1607	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1608	+	//         long startTime = System.nanoTime();
1609	+	//         while (!flag.get()) {
1610	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1611	+	//                 throw new AssertionError("timed out");
1612	+	//             Thread.yield();
1613	+	//         }
1614	+	//     }
1615	+
1616	+	public static class NPETask implements Callable<String> {
1617	+	public String call() { throw new NullPointerException(); }
1618	+	}
1619	+
1620	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1621	+	return new CheckedRunnable() {
1622	+	protected void realRun() {
1623	+	try {
1624	+	delay(timeoutMillis);
1625	+	} catch (InterruptedException ok) {}
1626	+	}};
1627	+	}
1628	+
1629	+	/**
1630	+	* For use as ThreadFactory in constructors
1631	+	*/
1632	+	public static class SimpleThreadFactory implements ThreadFactory {
1633	+	public Thread newThread(Runnable r) {
1634	+	return new Thread(r);
1635		}
1636		}
1637
1638	+	public interface TrackedRunnable extends Runnable {
1639	+	boolean isDone();
1640	+	}
1641
1642	<	public class MediumRunnable implements Runnable {
1642	>	public static class TrackedNoOpRunnable implements Runnable {
1643	>	public volatile boolean done = false;
1644		public void run() {
1645	+	done = true;
1646	+	}
1647	+	}
1648	+
1649	+	/**
1650	+	* Analog of CheckedRunnable for RecursiveAction
1651	+	*/
1652	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1653	+	protected abstract void realCompute() throws Throwable;
1654	+
1655	+	@Override protected final void compute() {
1656		try {
1657	<	Thread.sleep(MEDIUM_DELAY_MS);
1658	<	}
1659	<	catch(Exception e) {
228	<	threadFail("unexpectedException");
1657	>	realCompute();
1658	>	} catch (Throwable fail) {
1659	>	threadUnexpectedException(fail);
1660		}
1661		}
1662		}
1663
1664	<	public class MediumInterruptedRunnable implements Runnable {
1665	<	public void run() {
1664	>	/**
1665	>	* Analog of CheckedCallable for RecursiveTask
1666	>	*/
1667	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1668	>	protected abstract T realCompute() throws Throwable;
1669	>
1670	>	@Override protected final T compute() {
1671		try {
1672	<	Thread.sleep(MEDIUM_DELAY_MS);
1673	<	threadFail("should throw IE");
1672	>	return realCompute();
1673	>	} catch (Throwable fail) {
1674	>	threadUnexpectedException(fail);
1675		}
1676	<	catch(InterruptedException success) {
1676	>	throw new AssertionError("unreached");
1677	>	}
1678	>	}
1679	>
1680	>	/**
1681	>	* For use as RejectedExecutionHandler in constructors
1682	>	*/
1683	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1684	>	public void rejectedExecution(Runnable r,
1685	>	ThreadPoolExecutor executor) {}
1686	>	}
1687	>
1688	>	/**
1689	>	* A CyclicBarrier that uses timed await and fails with
1690	>	* AssertionErrors instead of throwing checked exceptions.
1691	>	*/
1692	>	public static class CheckedBarrier extends CyclicBarrier {
1693	>	public CheckedBarrier(int parties) { super(parties); }
1694	>
1695	>	public int await() {
1696	>	try {
1697	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1698	>	} catch (TimeoutException timedOut) {
1699	>	throw new AssertionError("timed out");
1700	>	} catch (Exception fail) {
1701	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1702		}
1703		}
1704		}
1705
1706	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1707	<	public void run() {
1706	>	void checkEmpty(BlockingQueue q) {
1707	>	try {
1708	>	assertTrue(q.isEmpty());
1709	>	assertEquals(0, q.size());
1710	>	assertNull(q.peek());
1711	>	assertNull(q.poll());
1712	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1713	>	assertEquals(q.toString(), "[]");
1714	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1715	>	assertFalse(q.iterator().hasNext());
1716	>	try {
1717	>	q.element();
1718	>	shouldThrow();
1719	>	} catch (NoSuchElementException success) {}
1720	>	try {
1721	>	q.iterator().next();
1722	>	shouldThrow();
1723	>	} catch (NoSuchElementException success) {}
1724		try {
1725	<	Thread.sleep(MEDIUM_DELAY_MS);
1725	>	q.remove();
1726	>	shouldThrow();
1727	>	} catch (NoSuchElementException success) {}
1728	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1729	>	}
1730	>
1731	>	void assertSerialEquals(Object x, Object y) {
1732	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1733	>	}
1734	>
1735	>	void assertNotSerialEquals(Object x, Object y) {
1736	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1737	>	}
1738	>
1739	>	byte[] serialBytes(Object o) {
1740	>	try {
1741	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1742	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1743	>	oos.writeObject(o);
1744	>	oos.flush();
1745	>	oos.close();
1746	>	return bos.toByteArray();
1747	>	} catch (Throwable fail) {
1748	>	threadUnexpectedException(fail);
1749	>	return new byte[0];
1750	>	}
1751	>	}
1752	>
1753	>	void assertImmutable(Object o) {
1754	>	if (o instanceof Collection) {
1755	>	assertThrows(
1756	>	UnsupportedOperationException.class,
1757	>	() -> ((Collection) o).add(null));
1758	>	}
1759	>	}
1760	>
1761	>	@SuppressWarnings("unchecked")
1762	>	<T> T serialClone(T o) {
1763	>	T clone = null;
1764	>	try {
1765	>	ObjectInputStream ois = new ObjectInputStream
1766	>	(new ByteArrayInputStream(serialBytes(o)));
1767	>	clone = (T) ois.readObject();
1768	>	} catch (Throwable fail) {
1769	>	threadUnexpectedException(fail);
1770	>	}
1771	>	if (o == clone) assertImmutable(o);
1772	>	else assertSame(o.getClass(), clone.getClass());
1773	>	return clone;
1774	>	}
1775	>
1776	>	/**
1777	>	* A version of serialClone that leaves error handling (for
1778	>	* e.g. NotSerializableException) up to the caller.
1779	>	*/
1780	>	@SuppressWarnings("unchecked")
1781	>	<T> T serialClonePossiblyFailing(T o)
1782	>	throws ReflectiveOperationException, java.io.IOException {
1783	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1784	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1785	>	oos.writeObject(o);
1786	>	oos.flush();
1787	>	oos.close();
1788	>	ObjectInputStream ois = new ObjectInputStream
1789	>	(new ByteArrayInputStream(bos.toByteArray()));
1790	>	T clone = (T) ois.readObject();
1791	>	if (o == clone) assertImmutable(o);
1792	>	else assertSame(o.getClass(), clone.getClass());
1793	>	return clone;
1794	>	}
1795	>
1796	>	/**
1797	>	* If o implements Cloneable and has a public clone method,
1798	>	* returns a clone of o, else null.
1799	>	*/
1800	>	@SuppressWarnings("unchecked")
1801	>	<T> T cloneableClone(T o) {
1802	>	if (!(o instanceof Cloneable)) return null;
1803	>	final T clone;
1804	>	try {
1805	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1806	>	} catch (NoSuchMethodException ok) {
1807	>	return null;
1808	>	} catch (ReflectiveOperationException unexpected) {
1809	>	throw new Error(unexpected);
1810	>	}
1811	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1812	>	assertSame(o.getClass(), clone.getClass());
1813	>	return clone;
1814	>	}
1815	>
1816	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1817	>	Action... throwingActions) {
1818	>	for (Action throwingAction : throwingActions) {
1819	>	boolean threw = false;
1820	>	try { throwingAction.run(); }
1821	>	catch (Throwable t) {
1822	>	threw = true;
1823	>	if (!expectedExceptionClass.isInstance(t))
1824	>	throw new AssertionError(
1825	>	"Expected " + expectedExceptionClass.getName() +
1826	>	", got " + t.getClass().getName(),
1827	>	t);
1828	>	}
1829	>	if (!threw)
1830	>	shouldThrow(expectedExceptionClass.getName());
1831	>	}
1832	>	}
1833	>
1834	>	public void assertIteratorExhausted(Iterator<?> it) {
1835	>	try {
1836	>	it.next();
1837	>	shouldThrow();
1838	>	} catch (NoSuchElementException success) {}
1839	>	assertFalse(it.hasNext());
1840	>	}
1841	>
1842	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1843	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1844	>	}
1845	>
1846	>	public Runnable runnableThrowing(final RuntimeException ex) {
1847	>	return new Runnable() { public void run() { throw ex; }};
1848	>	}
1849	>
1850	>	/** A reusable thread pool to be shared by tests. */
1851	>	static final ExecutorService cachedThreadPool =
1852	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1853	>	1000L, MILLISECONDS,
1854	>	new SynchronousQueue<Runnable>());
1855	>
1856	>	static <T> void shuffle(T[] array) {
1857	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1858	>	}
1859	>
1860	>	/**
1861	>	* Returns the same String as would be returned by {@link
1862	>	* Object#toString}, whether or not the given object's class
1863	>	* overrides toString().
1864	>	*
1865	>	* @see System#identityHashCode
1866	>	*/
1867	>	static String identityString(Object x) {
1868	>	return x.getClass().getName()
1869	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1870	>	}
1871	>
1872	>	// --- Shared assertions for Executor tests ---
1873	>
1874	>	/**
1875	>	* Returns maximum number of tasks that can be submitted to given
1876	>	* pool (with bounded queue) before saturation (when submission
1877	>	* throws RejectedExecutionException).
1878	>	*/
1879	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1880	>	BlockingQueue<Runnable> q = pool.getQueue();
1881	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1882	>	}
1883	>
1884	>	@SuppressWarnings("FutureReturnValueIgnored")
1885	>	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1886	>	try {
1887	>	e.execute((Runnable) null);
1888	>	shouldThrow();
1889	>	} catch (NullPointerException success) {}
1890	>
1891	>	if (! (e instanceof ExecutorService)) return;
1892	>	ExecutorService es = (ExecutorService) e;
1893	>	try {
1894	>	es.submit((Runnable) null);
1895	>	shouldThrow();
1896	>	} catch (NullPointerException success) {}
1897	>	try {
1898	>	es.submit((Runnable) null, Boolean.TRUE);
1899	>	shouldThrow();
1900	>	} catch (NullPointerException success) {}
1901	>	try {
1902	>	es.submit((Callable) null);
1903	>	shouldThrow();
1904	>	} catch (NullPointerException success) {}
1905	>
1906	>	if (! (e instanceof ScheduledExecutorService)) return;
1907	>	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1908	>	try {
1909	>	ses.schedule((Runnable) null,
1910	>	randomTimeout(), randomTimeUnit());
1911	>	shouldThrow();
1912	>	} catch (NullPointerException success) {}
1913	>	try {
1914	>	ses.schedule((Callable) null,
1915	>	randomTimeout(), randomTimeUnit());
1916	>	shouldThrow();
1917	>	} catch (NullPointerException success) {}
1918	>	try {
1919	>	ses.scheduleAtFixedRate((Runnable) null,
1920	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1921	>	shouldThrow();
1922	>	} catch (NullPointerException success) {}
1923	>	try {
1924	>	ses.scheduleWithFixedDelay((Runnable) null,
1925	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1926	>	shouldThrow();
1927	>	} catch (NullPointerException success) {}
1928	>	}
1929	>
1930	>	void setRejectedExecutionHandler(
1931	>	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1932	>	p.setRejectedExecutionHandler(handler);
1933	>	assertSame(handler, p.getRejectedExecutionHandler());
1934	>	}
1935	>
1936	>	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1937	>	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1938	>	final long savedTaskCount = p.getTaskCount();
1939	>	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1940	>	final int savedQueueSize = p.getQueue().size();
1941	>	final boolean stock = (p.getClass().getClassLoader() == null);
1942	>
1943	>	Runnable r = () -> {};
1944	>	Callable<Boolean> c = () -> Boolean.TRUE;
1945	>
1946	>	class Recorder implements RejectedExecutionHandler {
1947	>	public volatile Runnable r = null;
1948	>	public volatile ThreadPoolExecutor p = null;
1949	>	public void reset() { r = null; p = null; }
1950	>	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1951	>	assertNull(this.r);
1952	>	assertNull(this.p);
1953	>	this.r = r;
1954	>	this.p = p;
1955		}
1956	<	catch(InterruptedException success) {
1956	>	}
1957	>
1958	>	// check custom handler is invoked exactly once per task
1959	>	Recorder recorder = new Recorder();
1960	>	setRejectedExecutionHandler(p, recorder);
1961	>	for (int i = 2; i--> 0; ) {
1962	>	recorder.reset();
1963	>	p.execute(r);
1964	>	if (stock && p.getClass() == ThreadPoolExecutor.class)
1965	>	assertSame(r, recorder.r);
1966	>	assertSame(p, recorder.p);
1967	>
1968	>	recorder.reset();
1969	>	assertFalse(p.submit(r).isDone());
1970	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1971	>	assertSame(p, recorder.p);
1972	>
1973	>	recorder.reset();
1974	>	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1975	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1976	>	assertSame(p, recorder.p);
1977	>
1978	>	recorder.reset();
1979	>	assertFalse(p.submit(c).isDone());
1980	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1981	>	assertSame(p, recorder.p);
1982	>
1983	>	if (p instanceof ScheduledExecutorService) {
1984	>	ScheduledExecutorService s = (ScheduledExecutorService) p;
1985	>	ScheduledFuture<?> future;
1986	>
1987	>	recorder.reset();
1988	>	future = s.schedule(r, randomTimeout(), randomTimeUnit());
1989	>	assertFalse(future.isDone());
1990	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1991	>	assertSame(p, recorder.p);
1992	>
1993	>	recorder.reset();
1994	>	future = s.schedule(c, randomTimeout(), randomTimeUnit());
1995	>	assertFalse(future.isDone());
1996	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1997	>	assertSame(p, recorder.p);
1998	>
1999	>	recorder.reset();
2000	>	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2001	>	assertFalse(future.isDone());
2002	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2003	>	assertSame(p, recorder.p);
2004	>
2005	>	recorder.reset();
2006	>	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2007	>	assertFalse(future.isDone());
2008	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2009	>	assertSame(p, recorder.p);
2010	>	}
2011	>	}
2012	>
2013	>	// Checking our custom handler above should be sufficient, but
2014	>	// we add some integration tests of standard handlers.
2015	>	final AtomicReference<Thread> thread = new AtomicReference<>();
2016	>	final Runnable setThread = () -> thread.set(Thread.currentThread());
2017	>
2018	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2019	>	try {
2020	>	p.execute(setThread);
2021	>	shouldThrow();
2022	>	} catch (RejectedExecutionException success) {}
2023	>	assertNull(thread.get());
2024	>
2025	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2026	>	p.execute(setThread);
2027	>	assertNull(thread.get());
2028	>
2029	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2030	>	p.execute(setThread);
2031	>	if (p.isShutdown())
2032	>	assertNull(thread.get());
2033	>	else
2034	>	assertSame(Thread.currentThread(), thread.get());
2035	>
2036	>	setRejectedExecutionHandler(p, savedHandler);
2037	>
2038	>	// check that pool was not perturbed by handlers
2039	>	assertEquals(savedTaskCount, p.getTaskCount());
2040	>	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2041	>	assertEquals(savedQueueSize, p.getQueue().size());
2042	>	}
2043	>
2044	>	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2045	>	assertEquals(x, y);
2046	>	assertEquals(y, x);
2047	>	assertEquals(x.isEmpty(), y.isEmpty());
2048	>	assertEquals(x.size(), y.size());
2049	>	if (x instanceof List) {
2050	>	assertEquals(x.toString(), y.toString());
2051	>	}
2052	>	if (x instanceof List || x instanceof Set) {
2053	>	assertEquals(x.hashCode(), y.hashCode());
2054	>	}
2055	>	if (x instanceof List || x instanceof Deque) {
2056	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2057	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2058	>	y.toArray(new Object[0])));
2059	>	}
2060	>	}
2061	>
2062	>	/**
2063	>	* A weaker form of assertCollectionsEquals which does not insist
2064	>	* that the two collections satisfy Object#equals(Object), since
2065	>	* they may use identity semantics as Deques do.
2066	>	*/
2067	>	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2068	>	if (x instanceof List || x instanceof Set)
2069	>	assertCollectionsEquals(x, y);
2070	>	else {
2071	>	assertEquals(x.isEmpty(), y.isEmpty());
2072	>	assertEquals(x.size(), y.size());
2073	>	assertEquals(new HashSet(x), new HashSet(y));
2074	>	if (x instanceof Deque) {
2075	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2076	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2077	>	y.toArray(new Object[0])));
2078		}
2079		}
2080		}
253	–
2081		}

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