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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.15 by dl, Mon Dec 29 19:05:40 2003 UTC vs.
Revision 1.242 by jsr166, Mon Feb 19 16:12:11 2018 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by Doug Lea with assistance from members of JCP JSR-166
3	<	* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, 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.*;
14	<	import java.security.*;
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.Enumeration;
70	>	import java.util.Iterator;
71	>	import java.util.List;
72	>	import java.util.NoSuchElementException;
73	>	import java.util.PropertyPermission;
74	>	import java.util.concurrent.BlockingQueue;
75	>	import java.util.concurrent.Callable;
76	>	import java.util.concurrent.CountDownLatch;
77	>	import java.util.concurrent.CyclicBarrier;
78	>	import java.util.concurrent.ExecutionException;
79	>	import java.util.concurrent.Executor;
80	>	import java.util.concurrent.Executors;
81	>	import java.util.concurrent.ExecutorService;
82	>	import java.util.concurrent.ForkJoinPool;
83	>	import java.util.concurrent.Future;
84	>	import java.util.concurrent.FutureTask;
85	>	import java.util.concurrent.RecursiveAction;
86	>	import java.util.concurrent.RecursiveTask;
87	>	import java.util.concurrent.RejectedExecutionException;
88	>	import java.util.concurrent.RejectedExecutionHandler;
89	>	import java.util.concurrent.Semaphore;
90	>	import java.util.concurrent.ScheduledExecutorService;
91	>	import java.util.concurrent.ScheduledFuture;
92	>	import java.util.concurrent.SynchronousQueue;
93	>	import java.util.concurrent.ThreadFactory;
94	>	import java.util.concurrent.ThreadLocalRandom;
95	>	import java.util.concurrent.ThreadPoolExecutor;
96	>	import java.util.concurrent.TimeUnit;
97	>	import java.util.concurrent.TimeoutException;
98	>	import java.util.concurrent.atomic.AtomicBoolean;
99	>	import java.util.concurrent.atomic.AtomicReference;
100	>	import java.util.regex.Pattern;
101	>
102	>	import junit.framework.Test;
103	>	import junit.framework.TestCase;
104	>	import junit.framework.TestResult;
105	>	import junit.framework.TestSuite;
106
107		/**
108		* Base class for JSR166 Junit TCK tests.  Defines some constants,
109		* utility methods and classes, as well as a simple framework for
110		* helping to make sure that assertions failing in generated threads
111		* cause the associated test that generated them to itself fail (which
112	<	* JUnit doe not otherwise arrange).  The rules for creating such
112	>	* JUnit does not otherwise arrange).  The rules for creating such
113		* tests are:
114		*
115		* <ol>
116		*
117	<	* <li> All assertions in code running in generated threads must use
118	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
119	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
120	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
117	>	* <li>All assertions in code running in generated threads must use
118	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
119	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
120	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
121		* particularly recommended) for other code to use these forms too.
122		* Only the most typically used JUnit assertion methods are defined
123	<	* this way, but enough to live with.</li>
123	>	* this way, but enough to live with.
124		*
125	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
126	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
125	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
126	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
127		* them. These methods are used to clear and check for thread
128	<	* assertion failures.</li>
128	>	* assertion failures.
129		*
130	<	* <li>All delays and timeouts must use one of the constants <tt>
131	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
132	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
130	>	* <li>All delays and timeouts must use one of the constants {@code
131	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
132	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
133		* discriminable from zero time, and always allows enough time for the
134		* small amounts of computation (creating a thread, calling a few
135		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
136		* is always discriminable as larger than SHORT and smaller than
137		* MEDIUM.  And so on. These constants are set to conservative values,
138		* but even so, if there is ever any doubt, they can all be increased
139	<	* in one spot to rerun tests on slower platforms</li>
139	>	* in one spot to rerun tests on slower platforms.
140		*
141	<	* <li> All threads generated must be joined inside each test case
142	<	* method (or <tt>fail</tt> to do so) before returning from the
143	<	* method. The <tt> joinPool</tt> method can be used to do this when
144	<	* using Executors.</li>
141	>	* <li>All threads generated must be joined inside each test case
142	>	* method (or {@code fail} to do so) before returning from the
143	>	* method. The {@code joinPool} method can be used to do this when
144	>	* using Executors.
145		*
146		* </ol>
147		*
148	<	* <p> <b>Other notes</b>
148	>	* <p><b>Other notes</b>
149		* <ul>
150		*
151	<	* <li> Usually, there is one testcase method per JSR166 method
151	>	* <li>Usually, there is one testcase method per JSR166 method
152		* covering "normal" operation, and then as many exception-testing
153		* methods as there are exceptions the method can throw. Sometimes
154		* there are multiple tests per JSR166 method when the different
155		* "normal" behaviors differ significantly. And sometimes testcases
156	<	* cover multiple methods when they cannot be tested in
157	<	* isolation.</li>
158	<	*
67	<	* <li> The documentation style for testcases is to provide as javadoc
156	>	* cover multiple methods when they cannot be tested in isolation.
157	>	*
158	>	* <li>The documentation style for testcases is to provide as javadoc
159		* a simple sentence or two describing the property that the testcase
160		* method purports to test. The javadocs do not say anything about how
161	<	* the property is tested. To find out, read the code.</li>
161	>	* the property is tested. To find out, read the code.
162		*
163	<	* <li> These tests are "conformance tests", and do not attempt to
163	>	* <li>These tests are "conformance tests", and do not attempt to
164		* test throughput, latency, scalability or other performance factors
165		* (see the separate "jtreg" tests for a set intended to check these
166		* for the most central aspects of functionality.) So, most tests use
167		* the smallest sensible numbers of threads, collection sizes, etc
168	<	* needed to check basic conformance.</li>
168	>	* needed to check basic conformance.
169		*
170		* <li>The test classes currently do not declare inclusion in
171		* any particular package to simplify things for people integrating
172	<	* them in TCK test suites.</li>
172	>	* them in TCK test suites.
173		*
174	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
175	<	* runs all JSR166 unit tests.</li>
174	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
175	>	* runs all JSR166 unit tests.
176		*
177		* </ul>
178		*/
179		public class JSR166TestCase extends TestCase {
180	+	private static final boolean useSecurityManager =
181	+	Boolean.getBoolean("jsr166.useSecurityManager");
182	+
183	+	protected static final boolean expensiveTests =
184	+	Boolean.getBoolean("jsr166.expensiveTests");
185	+
186	+	/**
187	+	* If true, also run tests that are not part of the official tck
188	+	* because they test unspecified implementation details.
189	+	*/
190	+	protected static final boolean testImplementationDetails =
191	+	Boolean.getBoolean("jsr166.testImplementationDetails");
192	+
193	+	/**
194	+	* If true, report on stdout all "slow" tests, that is, ones that
195	+	* take more than profileThreshold milliseconds to execute.
196	+	*/
197	+	private static final boolean profileTests =
198	+	Boolean.getBoolean("jsr166.profileTests");
199	+
200	+	/**
201	+	* The number of milliseconds that tests are permitted for
202	+	* execution without being reported, when profileTests is set.
203	+	*/
204	+	private static final long profileThreshold =
205	+	Long.getLong("jsr166.profileThreshold", 100);
206	+
207	+	/**
208	+	* The number of repetitions per test (for tickling rare bugs).
209	+	*/
210	+	private static final int runsPerTest =
211	+	Integer.getInteger("jsr166.runsPerTest", 1);
212	+
213	+	/**
214	+	* The number of repetitions of the test suite (for finding leaks?).
215	+	*/
216	+	private static final int suiteRuns =
217	+	Integer.getInteger("jsr166.suiteRuns", 1);
218	+
219	+	/**
220	+	* Returns the value of the system property, or NaN if not defined.
221	+	*/
222	+	private static float systemPropertyValue(String name) {
223	+	String floatString = System.getProperty(name);
224	+	if (floatString == null)
225	+	return Float.NaN;
226	+	try {
227	+	return Float.parseFloat(floatString);
228	+	} catch (NumberFormatException ex) {
229	+	throw new IllegalArgumentException(
230	+	String.format("Bad float value in system property %s=%s",
231	+	name, floatString));
232	+	}
233	+	}
234	+
235	+	/**
236	+	* The scaling factor to apply to standard delays used in tests.
237	+	* May be initialized from any of:
238	+	* - the "jsr166.delay.factor" system property
239	+	* - the "test.timeout.factor" system property (as used by jtreg)
240	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
241	+	* - hard-coded fuzz factor when using a known slowpoke VM
242	+	*/
243	+	private static final float delayFactor = delayFactor();
244	+
245	+	private static float delayFactor() {
246	+	float x;
247	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
248	+	return x;
249	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
250	+	return x;
251	+	String prop = System.getProperty("java.vm.version");
252	+	if (prop != null && prop.matches(".*debug.*"))
253	+	return 4.0f; // How much slower is fastdebug than product?!
254	+	return 1.0f;
255	+	}
256	+
257	+	public JSR166TestCase() { super(); }
258	+	public JSR166TestCase(String name) { super(name); }
259	+
260	+	/**
261	+	* A filter for tests to run, matching strings of the form
262	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
263	+	* Usefully combined with jsr166.runsPerTest.
264	+	*/
265	+	private static final Pattern methodFilter = methodFilter();
266	+
267	+	private static Pattern methodFilter() {
268	+	String regex = System.getProperty("jsr166.methodFilter");
269	+	return (regex == null) ? null : Pattern.compile(regex);
270	+	}
271	+
272	+	// Instrumentation to debug very rare, but very annoying hung test runs.
273	+	static volatile TestCase currentTestCase;
274	+	// static volatile int currentRun = 0;
275	+	static {
276	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
277	+	// Avoid spurious reports with enormous runsPerTest.
278	+	// A single test case run should never take more than 1 second.
279	+	// But let's cap it at the high end too ...
280	+	final int timeoutMinutes =
281	+	Math.min(15, Math.max(runsPerTest / 60, 1));
282	+	for (TestCase lastTestCase = currentTestCase;;) {
283	+	try { MINUTES.sleep(timeoutMinutes); }
284	+	catch (InterruptedException unexpected) { break; }
285	+	if (lastTestCase == currentTestCase) {
286	+	System.err.printf(
287	+	"Looks like we're stuck running test: %s%n",
288	+	lastTestCase);
289	+	//                     System.err.printf(
290	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
291	+	//                         lastTestCase, currentRun, runsPerTest);
292	+	//                     System.err.println("availableProcessors=" +
293	+	//                         Runtime.getRuntime().availableProcessors());
294	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
295	+	dumpTestThreads();
296	+	// one stack dump is probably enough; more would be spam
297	+	break;
298	+	}
299	+	lastTestCase = currentTestCase;
300	+	}}};
301	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
302	+	thread.setDaemon(true);
303	+	thread.start();
304	+	}
305	+
306	+	//     public static String cpuModel() {
307	+	//         try {
308	+	//             java.util.regex.Matcher matcher
309	+	//               = Pattern.compile("model name\\s*: (.*)")
310	+	//                 .matcher(new String(
311	+	//                     java.nio.file.Files.readAllBytes(
312	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
313	+	//             matcher.find();
314	+	//             return matcher.group(1);
315	+	//         } catch (Exception ex) { return null; }
316	+	//     }
317	+
318	+	public void runBare() throws Throwable {
319	+	currentTestCase = this;
320	+	if (methodFilter == null
321	+	|| methodFilter.matcher(toString()).find())
322	+	super.runBare();
323	+	}
324	+
325	+	protected void runTest() throws Throwable {
326	+	for (int i = 0; i < runsPerTest; i++) {
327	+	// currentRun = i;
328	+	if (profileTests)
329	+	runTestProfiled();
330	+	else
331	+	super.runTest();
332	+	}
333	+	}
334	+
335	+	protected void runTestProfiled() throws Throwable {
336	+	for (int i = 0; i < 2; i++) {
337	+	long startTime = System.nanoTime();
338	+	super.runTest();
339	+	long elapsedMillis = millisElapsedSince(startTime);
340	+	if (elapsedMillis < profileThreshold)
341	+	break;
342	+	// Never report first run of any test; treat it as a
343	+	// warmup run, notably to trigger all needed classloading,
344	+	if (i > 0)
345	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
346	+	}
347	+	}
348	+
349	+	/**
350	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
351	+	*/
352	+	public static void main(String[] args) {
353	+	main(suite(), args);
354	+	}
355	+
356	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
357	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
358	+	long runTime;
359	+	public void startTest(Test test) {}
360	+	protected void printHeader(long runTime) {
361	+	this.runTime = runTime; // defer printing for later
362	+	}
363	+	protected void printFooter(TestResult result) {
364	+	if (result.wasSuccessful()) {
365	+	getWriter().println("OK (" + result.runCount() + " tests)"
366	+	+ "  Time: " + elapsedTimeAsString(runTime));
367	+	} else {
368	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
369	+	super.printFooter(result);
370	+	}
371	+	}
372	+	}
373	+
374		/**
375	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
376	<	*/
377	<	public static void main (String[] args) {
378	<	junit.textui.TestRunner.run (suite());
375	>	* Returns a TestRunner that doesn't bother with unnecessary
376	>	* fluff, like printing a "." for each test case.
377	>	*/
378	>	static junit.textui.TestRunner newPithyTestRunner() {
379	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
380	>	runner.setPrinter(new PithyResultPrinter(System.out));
381	>	return runner;
382		}
383
384		/**
385	<	* Collects all JSR166 unit tests as one suite
386	<	*/
387	<	public static Test suite ( ) {
388	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
389	<
390	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
391	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
392	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
393	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
394	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
395	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
396	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
397	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
398	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
399	<	suite.addTest(new TestSuite(AtomicLongTest.class));
400	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
401	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
402	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
403	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
404	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
405	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
406	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
407	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
408	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
409	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
410	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
411	<	suite.addTest(new TestSuite(DelayQueueTest.class));
412	<	suite.addTest(new TestSuite(ExchangerTest.class));
125	<	suite.addTest(new TestSuite(ExecutorsTest.class));
126	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
127	<	suite.addTest(new TestSuite(FutureTaskTest.class));
128	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
129	<	suite.addTest(new TestSuite(LinkedListTest.class));
130	<	suite.addTest(new TestSuite(LockSupportTest.class));
131	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
132	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
133	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
134	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
135	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
136	<	suite.addTest(new TestSuite(SemaphoreTest.class));
137	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
138	<	suite.addTest(new TestSuite(SystemTest.class));
139	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
140	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
141	<	suite.addTest(new TestSuite(ThreadTest.class));
142	<	suite.addTest(new TestSuite(TimeUnitTest.class));
143	<
385	>	* Runs all unit tests in the given test suite.
386	>	* Actual behavior influenced by jsr166.* system properties.
387	>	*/
388	>	static void main(Test suite, String[] args) {
389	>	if (useSecurityManager) {
390	>	System.err.println("Setting a permissive security manager");
391	>	Policy.setPolicy(permissivePolicy());
392	>	System.setSecurityManager(new SecurityManager());
393	>	}
394	>	for (int i = 0; i < suiteRuns; i++) {
395	>	TestResult result = newPithyTestRunner().doRun(suite);
396	>	if (!result.wasSuccessful())
397	>	System.exit(1);
398	>	System.gc();
399	>	System.runFinalization();
400	>	}
401	>	}
402	>
403	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
404	>	TestSuite suite = new TestSuite();
405	>	for (Object suiteOrClass : suiteOrClasses) {
406	>	if (suiteOrClass instanceof TestSuite)
407	>	suite.addTest((TestSuite) suiteOrClass);
408	>	else if (suiteOrClass instanceof Class)
409	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
410	>	else
411	>	throw new ClassCastException("not a test suite or class");
412	>	}
413		return suite;
414		}
415
416	+	public static void addNamedTestClasses(TestSuite suite,
417	+	String... testClassNames) {
418	+	for (String testClassName : testClassNames) {
419	+	try {
420	+	Class<?> testClass = Class.forName(testClassName);
421	+	Method m = testClass.getDeclaredMethod("suite");
422	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
423	+	} catch (ReflectiveOperationException e) {
424	+	throw new AssertionError("Missing test class", e);
425	+	}
426	+	}
427	+	}
428	+
429	+	public static final double JAVA_CLASS_VERSION;
430	+	public static final String JAVA_SPECIFICATION_VERSION;
431	+	static {
432	+	try {
433	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
434	+	new java.security.PrivilegedAction<Double>() {
435	+	public Double run() {
436	+	return Double.valueOf(System.getProperty("java.class.version"));}});
437	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
438	+	new java.security.PrivilegedAction<String>() {
439	+	public String run() {
440	+	return System.getProperty("java.specification.version");}});
441	+	} catch (Throwable t) {
442	+	throw new Error(t);
443	+	}
444	+	}
445	+
446	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
447	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
448	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
449	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
450	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
451	+
452	+	/**
453	+	* Collects all JSR166 unit tests as one suite.
454	+	*/
455	+	public static Test suite() {
456	+	// Java7+ test classes
457	+	TestSuite suite = newTestSuite(
458	+	ForkJoinPoolTest.suite(),
459	+	ForkJoinTaskTest.suite(),
460	+	RecursiveActionTest.suite(),
461	+	RecursiveTaskTest.suite(),
462	+	LinkedTransferQueueTest.suite(),
463	+	PhaserTest.suite(),
464	+	ThreadLocalRandomTest.suite(),
465	+	AbstractExecutorServiceTest.suite(),
466	+	AbstractQueueTest.suite(),
467	+	AbstractQueuedSynchronizerTest.suite(),
468	+	AbstractQueuedLongSynchronizerTest.suite(),
469	+	ArrayBlockingQueueTest.suite(),
470	+	ArrayDequeTest.suite(),
471	+	ArrayListTest.suite(),
472	+	AtomicBooleanTest.suite(),
473	+	AtomicIntegerArrayTest.suite(),
474	+	AtomicIntegerFieldUpdaterTest.suite(),
475	+	AtomicIntegerTest.suite(),
476	+	AtomicLongArrayTest.suite(),
477	+	AtomicLongFieldUpdaterTest.suite(),
478	+	AtomicLongTest.suite(),
479	+	AtomicMarkableReferenceTest.suite(),
480	+	AtomicReferenceArrayTest.suite(),
481	+	AtomicReferenceFieldUpdaterTest.suite(),
482	+	AtomicReferenceTest.suite(),
483	+	AtomicStampedReferenceTest.suite(),
484	+	ConcurrentHashMapTest.suite(),
485	+	ConcurrentLinkedDequeTest.suite(),
486	+	ConcurrentLinkedQueueTest.suite(),
487	+	ConcurrentSkipListMapTest.suite(),
488	+	ConcurrentSkipListSubMapTest.suite(),
489	+	ConcurrentSkipListSetTest.suite(),
490	+	ConcurrentSkipListSubSetTest.suite(),
491	+	CopyOnWriteArrayListTest.suite(),
492	+	CopyOnWriteArraySetTest.suite(),
493	+	CountDownLatchTest.suite(),
494	+	CountedCompleterTest.suite(),
495	+	CyclicBarrierTest.suite(),
496	+	DelayQueueTest.suite(),
497	+	EntryTest.suite(),
498	+	ExchangerTest.suite(),
499	+	ExecutorsTest.suite(),
500	+	ExecutorCompletionServiceTest.suite(),
501	+	FutureTaskTest.suite(),
502	+	LinkedBlockingDequeTest.suite(),
503	+	LinkedBlockingQueueTest.suite(),
504	+	LinkedListTest.suite(),
505	+	LockSupportTest.suite(),
506	+	PriorityBlockingQueueTest.suite(),
507	+	PriorityQueueTest.suite(),
508	+	ReentrantLockTest.suite(),
509	+	ReentrantReadWriteLockTest.suite(),
510	+	ScheduledExecutorTest.suite(),
511	+	ScheduledExecutorSubclassTest.suite(),
512	+	SemaphoreTest.suite(),
513	+	SynchronousQueueTest.suite(),
514	+	SystemTest.suite(),
515	+	ThreadLocalTest.suite(),
516	+	ThreadPoolExecutorTest.suite(),
517	+	ThreadPoolExecutorSubclassTest.suite(),
518	+	ThreadTest.suite(),
519	+	TimeUnitTest.suite(),
520	+	TreeMapTest.suite(),
521	+	TreeSetTest.suite(),
522	+	TreeSubMapTest.suite(),
523	+	TreeSubSetTest.suite(),
524	+	VectorTest.suite());
525	+
526	+	// Java8+ test classes
527	+	if (atLeastJava8()) {
528	+	String[] java8TestClassNames = {
529	+	"ArrayDeque8Test",
530	+	"Atomic8Test",
531	+	"CompletableFutureTest",
532	+	"ConcurrentHashMap8Test",
533	+	"CountedCompleter8Test",
534	+	"DoubleAccumulatorTest",
535	+	"DoubleAdderTest",
536	+	"ForkJoinPool8Test",
537	+	"ForkJoinTask8Test",
538	+	"HashMapTest",
539	+	"LinkedBlockingDeque8Test",
540	+	"LinkedBlockingQueue8Test",
541	+	"LongAccumulatorTest",
542	+	"LongAdderTest",
543	+	"SplittableRandomTest",
544	+	"StampedLockTest",
545	+	"SubmissionPublisherTest",
546	+	"ThreadLocalRandom8Test",
547	+	"TimeUnit8Test",
548	+	};
549	+	addNamedTestClasses(suite, java8TestClassNames);
550	+	}
551	+
552	+	// Java9+ test classes
553	+	if (atLeastJava9()) {
554	+	String[] java9TestClassNames = {
555	+	"AtomicBoolean9Test",
556	+	"AtomicInteger9Test",
557	+	"AtomicIntegerArray9Test",
558	+	"AtomicLong9Test",
559	+	"AtomicLongArray9Test",
560	+	"AtomicReference9Test",
561	+	"AtomicReferenceArray9Test",
562	+	"ExecutorCompletionService9Test",
563	+	"ForkJoinPool9Test",
564	+	};
565	+	addNamedTestClasses(suite, java9TestClassNames);
566	+	}
567	+
568	+	return suite;
569	+	}
570	+
571	+	/** Returns list of junit-style test method names in given class. */
572	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
573	+	Method[] methods = testClass.getDeclaredMethods();
574	+	ArrayList<String> names = new ArrayList<>(methods.length);
575	+	for (Method method : methods) {
576	+	if (method.getName().startsWith("test")
577	+	&& Modifier.isPublic(method.getModifiers())
578	+	// method.getParameterCount() requires jdk8+
579	+	&& method.getParameterTypes().length == 0) {
580	+	names.add(method.getName());
581	+	}
582	+	}
583	+	return names;
584	+	}
585	+
586	+	/**
587	+	* Returns junit-style testSuite for the given test class, but
588	+	* parameterized by passing extra data to each test.
589	+	*/
590	+	public static <ExtraData> Test parameterizedTestSuite
591	+	(Class<? extends JSR166TestCase> testClass,
592	+	Class<ExtraData> dataClass,
593	+	ExtraData data) {
594	+	try {
595	+	TestSuite suite = new TestSuite();
596	+	Constructor c =
597	+	testClass.getDeclaredConstructor(dataClass, String.class);
598	+	for (String methodName : testMethodNames(testClass))
599	+	suite.addTest((Test) c.newInstance(data, methodName));
600	+	return suite;
601	+	} catch (ReflectiveOperationException e) {
602	+	throw new AssertionError(e);
603	+	}
604	+	}
605	+
606	+	/**
607	+	* Returns junit-style testSuite for the jdk8 extension of the
608	+	* given test class, but parameterized by passing extra data to
609	+	* each test.  Uses reflection to allow compilation in jdk7.
610	+	*/
611	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
612	+	(Class<? extends JSR166TestCase> testClass,
613	+	Class<ExtraData> dataClass,
614	+	ExtraData data) {
615	+	if (atLeastJava8()) {
616	+	String name = testClass.getName();
617	+	String name8 = name.replaceAll("Test$", "8Test");
618	+	if (name.equals(name8)) throw new AssertionError(name);
619	+	try {
620	+	return (Test)
621	+	Class.forName(name8)
622	+	.getMethod("testSuite", dataClass)
623	+	.invoke(null, data);
624	+	} catch (ReflectiveOperationException e) {
625	+	throw new AssertionError(e);
626	+	}
627	+	} else {
628	+	return new TestSuite();
629	+	}
630	+	}
631	+
632	+	// Delays for timing-dependent tests, in milliseconds.
633
634		public static long SHORT_DELAY_MS;
635		public static long SMALL_DELAY_MS;
636		public static long MEDIUM_DELAY_MS;
637		public static long LONG_DELAY_MS;
638
639	+	private static final long RANDOM_TIMEOUT;
640	+	private static final long RANDOM_EXPIRED_TIMEOUT;
641	+	private static final TimeUnit RANDOM_TIMEUNIT;
642	+	static {
643	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
644	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
645	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
646	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
647	+	TimeUnit[] timeUnits = TimeUnit.values();
648	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
649	+	}
650	+
651	+	/**
652	+	* Returns a timeout for use when any value at all will do.
653	+	*/
654	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
655	+
656	+	/**
657	+	* Returns a timeout that means "no waiting", i.e. not positive.
658	+	*/
659	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
660
661		/**
662	<	* Return the shortest timed delay. This could
663	<	* be reimplemented to use for example a Property.
664	<	*/
662	>	* Returns a random non-null TimeUnit.
663	>	*/
664	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
665	>
666	>	/**
667	>	* Returns the shortest timed delay. This can be scaled up for
668	>	* slow machines using the jsr166.delay.factor system property,
669	>	* or via jtreg's -timeoutFactor: flag.
670	>	* http://openjdk.java.net/jtreg/command-help.html
671	>	*/
672		protected long getShortDelay() {
673	<	return 100;
673	>	return (long) (50 * delayFactor);
674		}
675
162	–
676		/**
677	<	* Set delays as multiples of SHORT_DELAY.
677	>	* Sets delays as multiples of SHORT_DELAY.
678		*/
679	<	protected  void setDelays() {
679	>	protected void setDelays() {
680		SHORT_DELAY_MS = getShortDelay();
681	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
681	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
682		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
683	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
683	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
684	>	}
685	>
686	>	private static final long TIMEOUT_DELAY_MS
687	>	= (long) (12.0 * Math.cbrt(delayFactor));
688	>
689	>	/**
690	>	* Returns a timeout in milliseconds to be used in tests that verify
691	>	* that operations block or time out.  We want this to be longer
692	>	* than the OS scheduling quantum, but not too long, so don't scale
693	>	* linearly with delayFactor; we use "crazy" cube root instead.
694	>	*/
695	>	static long timeoutMillis() {
696	>	return TIMEOUT_DELAY_MS;
697	>	}
698	>
699	>	/**
700	>	* Returns a new Date instance representing a time at least
701	>	* delayMillis milliseconds in the future.
702	>	*/
703	>	Date delayedDate(long delayMillis) {
704	>	// Add 1 because currentTimeMillis is known to round into the past.
705	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
706		}
707
708		/**
709	<	* Flag set true if any threadAssert methods fail
709	>	* The first exception encountered if any threadAssertXXX method fails.
710		*/
711	<	volatile boolean threadFailed;
711	>	private final AtomicReference<Throwable> threadFailure
712	>	= new AtomicReference<>(null);
713
714		/**
715	<	* Initialize test to indicate that no thread assertions have failed
715	>	* Records an exception so that it can be rethrown later in the test
716	>	* harness thread, triggering a test case failure.  Only the first
717	>	* failure is recorded; subsequent calls to this method from within
718	>	* the same test have no effect.
719		*/
720	<	public void setUp() {
720	>	public void threadRecordFailure(Throwable t) {
721	>	System.err.println(t);
722	>	dumpTestThreads();
723	>	threadFailure.compareAndSet(null, t);
724	>	}
725	>
726	>	public void setUp() {
727		setDelays();
728	<	threadFailed = false;
728	>	}
729	>
730	>	void tearDownFail(String format, Object... args) {
731	>	String msg = toString() + ": " + String.format(format, args);
732	>	System.err.println(msg);
733	>	dumpTestThreads();
734	>	throw new AssertionError(msg);
735	>	}
736	>
737	>	/**
738	>	* Extra checks that get done for all test cases.
739	>	*
740	>	* Triggers test case failure if any thread assertions have failed,
741	>	* by rethrowing, in the test harness thread, any exception recorded
742	>	* earlier by threadRecordFailure.
743	>	*
744	>	* Triggers test case failure if interrupt status is set in the main thread.
745	>	*/
746	>	public void tearDown() throws Exception {
747	>	Throwable t = threadFailure.getAndSet(null);
748	>	if (t != null) {
749	>	if (t instanceof Error)
750	>	throw (Error) t;
751	>	else if (t instanceof RuntimeException)
752	>	throw (RuntimeException) t;
753	>	else if (t instanceof Exception)
754	>	throw (Exception) t;
755	>	else
756	>	throw new AssertionError(t.toString(), t);
757	>	}
758	>
759	>	if (Thread.interrupted())
760	>	tearDownFail("interrupt status set in main thread");
761	>
762	>	checkForkJoinPoolThreadLeaks();
763		}
764
765		/**
766	<	* Trigger test case failure if any thread assertions have failed
766	>	* Finds missing PoolCleaners
767		*/
768	<	public void tearDown() {
769	<	assertFalse(threadFailed);
768	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
769	>	Thread[] survivors = new Thread[7];
770	>	int count = Thread.enumerate(survivors);
771	>	for (int i = 0; i < count; i++) {
772	>	Thread thread = survivors[i];
773	>	String name = thread.getName();
774	>	if (name.startsWith("ForkJoinPool-")) {
775	>	// give thread some time to terminate
776	>	thread.join(LONG_DELAY_MS);
777	>	if (thread.isAlive())
778	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
779	>	thread);
780	>	}
781	>	}
782	>
783	>	if (!ForkJoinPool.commonPool()
784	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
785	>	tearDownFail("ForkJoin common pool thread stuck");
786		}
787
788		/**
789	<	* Fail, also setting status to indicate current testcase should fail
790	<	*/
789	>	* Just like fail(reason), but additionally recording (using
790	>	* threadRecordFailure) any AssertionError thrown, so that the
791	>	* current testcase will fail.
792	>	*/
793		public void threadFail(String reason) {
794	<	threadFailed = true;
795	<	fail(reason);
794	>	try {
795	>	fail(reason);
796	>	} catch (AssertionError fail) {
797	>	threadRecordFailure(fail);
798	>	throw fail;
799	>	}
800		}
801
802		/**
803	<	* If expression not true, set status to indicate current testcase
804	<	* should fail
805	<	*/
803	>	* Just like assertTrue(b), but additionally recording (using
804	>	* threadRecordFailure) any AssertionError thrown, so that the
805	>	* current testcase will fail.
806	>	*/
807		public void threadAssertTrue(boolean b) {
808	<	if (!b) {
207	<	threadFailed = true;
808	>	try {
809		assertTrue(b);
810	+	} catch (AssertionError fail) {
811	+	threadRecordFailure(fail);
812	+	throw fail;
813		}
814		}
815
816		/**
817	<	* If expression not false, set status to indicate current testcase
818	<	* should fail
819	<	*/
817	>	* Just like assertFalse(b), but additionally recording (using
818	>	* threadRecordFailure) any AssertionError thrown, so that the
819	>	* current testcase will fail.
820	>	*/
821		public void threadAssertFalse(boolean b) {
822	<	if (b) {
218	<	threadFailed = true;
822	>	try {
823		assertFalse(b);
824	+	} catch (AssertionError fail) {
825	+	threadRecordFailure(fail);
826	+	throw fail;
827		}
828		}
829
830		/**
831	<	* If argument not null, set status to indicate current testcase
832	<	* should fail
833	<	*/
831	>	* Just like assertNull(x), but additionally recording (using
832	>	* threadRecordFailure) any AssertionError thrown, so that the
833	>	* current testcase will fail.
834	>	*/
835		public void threadAssertNull(Object x) {
836	<	if (x != null) {
229	<	threadFailed = true;
836	>	try {
837		assertNull(x);
838	+	} catch (AssertionError fail) {
839	+	threadRecordFailure(fail);
840	+	throw fail;
841		}
842		}
843
844		/**
845	<	* If arguments not equal, set status to indicate current testcase
846	<	* should fail
847	<	*/
845	>	* Just like assertEquals(x, y), but additionally recording (using
846	>	* threadRecordFailure) any AssertionError thrown, so that the
847	>	* current testcase will fail.
848	>	*/
849		public void threadAssertEquals(long x, long y) {
850	<	if (x != y) {
240	<	threadFailed = true;
850	>	try {
851		assertEquals(x, y);
852	+	} catch (AssertionError fail) {
853	+	threadRecordFailure(fail);
854	+	throw fail;
855		}
856		}
857
858		/**
859	<	* If arguments not equal, set status to indicate current testcase
860	<	* should fail
861	<	*/
859	>	* Just like assertEquals(x, y), but additionally recording (using
860	>	* threadRecordFailure) any AssertionError thrown, so that the
861	>	* current testcase will fail.
862	>	*/
863		public void threadAssertEquals(Object x, Object y) {
864	<	if (x != y && (x == null || !x.equals(y))) {
251	<	threadFailed = true;
864	>	try {
865		assertEquals(x, y);
866	+	} catch (AssertionError fail) {
867	+	threadRecordFailure(fail);
868	+	throw fail;
869	+	} catch (Throwable fail) {
870	+	threadUnexpectedException(fail);
871		}
872		}
873
874		/**
875	<	* threadFail with message "should throw exception"
876	<	*/
875	>	* Just like assertSame(x, y), but additionally recording (using
876	>	* threadRecordFailure) any AssertionError thrown, so that the
877	>	* current testcase will fail.
878	>	*/
879	>	public void threadAssertSame(Object x, Object y) {
880	>	try {
881	>	assertSame(x, y);
882	>	} catch (AssertionError fail) {
883	>	threadRecordFailure(fail);
884	>	throw fail;
885	>	}
886	>	}
887	>
888	>	/**
889	>	* Calls threadFail with message "should throw exception".
890	>	*/
891		public void threadShouldThrow() {
892	<	threadFailed = true;
893	<	fail("should throw exception");
892	>	threadFail("should throw exception");
893	>	}
894	>
895	>	/**
896	>	* Calls threadFail with message "should throw" + exceptionName.
897	>	*/
898	>	public void threadShouldThrow(String exceptionName) {
899	>	threadFail("should throw " + exceptionName);
900		}
901
902		/**
903	<	* threadFail with message "Unexpected exception"
903	>	* Records the given exception using {@link #threadRecordFailure},
904	>	* then rethrows the exception, wrapping it in an AssertionError
905	>	* if necessary.
906		*/
907	<	public void threadUnexpectedException() {
908	<	threadFailed = true;
909	<	fail("Unexpected exception");
907	>	public void threadUnexpectedException(Throwable t) {
908	>	threadRecordFailure(t);
909	>	t.printStackTrace();
910	>	if (t instanceof RuntimeException)
911	>	throw (RuntimeException) t;
912	>	else if (t instanceof Error)
913	>	throw (Error) t;
914	>	else
915	>	throw new AssertionError("unexpected exception: " + t, t);
916		}
917
918	+	/**
919	+	* Delays, via Thread.sleep, for the given millisecond delay, but
920	+	* if the sleep is shorter than specified, may re-sleep or yield
921	+	* until time elapses.  Ensures that the given time, as measured
922	+	* by System.nanoTime(), has elapsed.
923	+	*/
924	+	static void delay(long millis) throws InterruptedException {
925	+	long nanos = millis * (1000 * 1000);
926	+	final long wakeupTime = System.nanoTime() + nanos;
927	+	do {
928	+	if (millis > 0L)
929	+	Thread.sleep(millis);
930	+	else // too short to sleep
931	+	Thread.yield();
932	+	nanos = wakeupTime - System.nanoTime();
933	+	millis = nanos / (1000 * 1000);
934	+	} while (nanos >= 0L);
935	+	}
936
937		/**
938	<	* Wait out termination of a thread pool or fail doing so
938	>	* Allows use of try-with-resources with per-test thread pools.
939		*/
940	<	public void joinPool(ExecutorService exec) {
940	>	class PoolCleaner implements AutoCloseable {
941	>	private final ExecutorService pool;
942	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
943	>	public void close() { joinPool(pool); }
944	>	}
945	>
946	>	/**
947	>	* An extension of PoolCleaner that has an action to release the pool.
948	>	*/
949	>	class PoolCleanerWithReleaser extends PoolCleaner {
950	>	private final Runnable releaser;
951	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
952	>	super(pool);
953	>	this.releaser = releaser;
954	>	}
955	>	public void close() {
956	>	try {
957	>	releaser.run();
958	>	} finally {
959	>	super.close();
960	>	}
961	>	}
962	>	}
963	>
964	>	PoolCleaner cleaner(ExecutorService pool) {
965	>	return new PoolCleaner(pool);
966	>	}
967	>
968	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
969	>	return new PoolCleanerWithReleaser(pool, releaser);
970	>	}
971	>
972	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
973	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
974	>	}
975	>
976	>	Runnable releaser(final CountDownLatch latch) {
977	>	return new Runnable() { public void run() {
978	>	do { latch.countDown(); }
979	>	while (latch.getCount() > 0);
980	>	}};
981	>	}
982	>
983	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
984	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
985	>	}
986	>
987	>	Runnable releaser(final AtomicBoolean flag) {
988	>	return new Runnable() { public void run() { flag.set(true); }};
989	>	}
990	>
991	>	/**
992	>	* Waits out termination of a thread pool or fails doing so.
993	>	*/
994	>	void joinPool(ExecutorService pool) {
995		try {
996	<	exec.shutdown();
997	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
998	<	} catch(InterruptedException ie) {
999	<	fail("Unexpected exception");
996	>	pool.shutdown();
997	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
998	>	try {
999	>	threadFail("ExecutorService " + pool +
1000	>	" did not terminate in a timely manner");
1001	>	} finally {
1002	>	// last resort, for the benefit of subsequent tests
1003	>	pool.shutdownNow();
1004	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1005	>	}
1006	>	}
1007	>	} catch (SecurityException ok) {
1008	>	// Allowed in case test doesn't have privs
1009	>	} catch (InterruptedException fail) {
1010	>	threadFail("Unexpected InterruptedException");
1011		}
1012		}
1013
1014	+	/**
1015	+	* Like Runnable, but with the freedom to throw anything.
1016	+	* junit folks had the same idea:
1017	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1018	+	*/
1019	+	interface Action { public void run() throws Throwable; }
1020
1021		/**
1022	<	* fail with message "should throw exception"
1023	<	*/
1022	>	* Runs all the given actions in parallel, failing if any fail.
1023	>	* Useful for running multiple variants of tests that are
1024	>	* necessarily individually slow because they must block.
1025	>	*/
1026	>	void testInParallel(Action ... actions) {
1027	>	ExecutorService pool = Executors.newCachedThreadPool();
1028	>	try (PoolCleaner cleaner = cleaner(pool)) {
1029	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1030	>	for (final Action action : actions)
1031	>	futures.add(pool.submit(new CheckedRunnable() {
1032	>	public void realRun() throws Throwable { action.run();}}));
1033	>	for (Future<?> future : futures)
1034	>	try {
1035	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1036	>	} catch (ExecutionException ex) {
1037	>	threadUnexpectedException(ex.getCause());
1038	>	} catch (Exception ex) {
1039	>	threadUnexpectedException(ex);
1040	>	}
1041	>	}
1042	>	}
1043	>
1044	>	/**
1045	>	* A debugging tool to print stack traces of most threads, as jstack does.
1046	>	* Uninteresting threads are filtered out.
1047	>	*/
1048	>	static void dumpTestThreads() {
1049	>	SecurityManager sm = System.getSecurityManager();
1050	>	if (sm != null) {
1051	>	try {
1052	>	System.setSecurityManager(null);
1053	>	} catch (SecurityException giveUp) {
1054	>	return;
1055	>	}
1056	>	}
1057	>
1058	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1059	>	System.err.println("------ stacktrace dump start ------");
1060	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1061	>	final String name = info.getThreadName();
1062	>	String lockName;
1063	>	if ("Signal Dispatcher".equals(name))
1064	>	continue;
1065	>	if ("Reference Handler".equals(name)
1066	>	&& (lockName = info.getLockName()) != null
1067	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1068	>	continue;
1069	>	if ("Finalizer".equals(name)
1070	>	&& (lockName = info.getLockName()) != null
1071	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1072	>	continue;
1073	>	if ("checkForWedgedTest".equals(name))
1074	>	continue;
1075	>	System.err.print(info);
1076	>	}
1077	>	System.err.println("------ stacktrace dump end ------");
1078	>
1079	>	if (sm != null) System.setSecurityManager(sm);
1080	>	}
1081	>
1082	>	/**
1083	>	* Checks that thread eventually enters the expected blocked thread state.
1084	>	*/
1085	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1086	>	// always sleep at least 1 ms, with high probability avoiding
1087	>	// transitory states
1088	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1089	>	try { delay(1); }
1090	>	catch (InterruptedException fail) {
1091	>	throw new AssertionError("Unexpected InterruptedException", fail);
1092	>	}
1093	>	Thread.State s = thread.getState();
1094	>	if (s == expected)
1095	>	return;
1096	>	else if (s == Thread.State.TERMINATED)
1097	>	fail("Unexpected thread termination");
1098	>	}
1099	>	fail("timed out waiting for thread to enter thread state " + expected);
1100	>	}
1101	>
1102	>	/**
1103	>	* Checks that future.get times out, with the default timeout of
1104	>	* {@code timeoutMillis()}.
1105	>	*/
1106	>	void assertFutureTimesOut(Future future) {
1107	>	assertFutureTimesOut(future, timeoutMillis());
1108	>	}
1109	>
1110	>	/**
1111	>	* Checks that future.get times out, with the given millisecond timeout.
1112	>	*/
1113	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1114	>	long startTime = System.nanoTime();
1115	>	try {
1116	>	future.get(timeoutMillis, MILLISECONDS);
1117	>	shouldThrow();
1118	>	} catch (TimeoutException success) {
1119	>	} catch (Exception fail) {
1120	>	threadUnexpectedException(fail);
1121	>	} finally { future.cancel(true); }
1122	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1123	>	}
1124	>
1125	>	/**
1126	>	* Fails with message "should throw exception".
1127	>	*/
1128		public void shouldThrow() {
1129		fail("Should throw exception");
1130		}
1131
1132		/**
1133	<	* fail with message "Unexpected exception"
1133	>	* Fails with message "should throw " + exceptionName.
1134		*/
1135	<	public void unexpectedException() {
1136	<	fail("Unexpected exception");
1135	>	public void shouldThrow(String exceptionName) {
1136	>	fail("Should throw " + exceptionName);
1137		}
1138
1139	+	/**
1140	+	* The maximum number of consecutive spurious wakeups we should
1141	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1142	+	*/
1143	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1144
1145		/**
1146		* The number of elements to place in collections, arrays, etc.
1147		*/
1148	<	static final int SIZE = 20;
1148	>	public static final int SIZE = 20;
1149
1150		// Some convenient Integer constants
1151
1152	<	static final Integer zero = new Integer(0);
1153	<	static final Integer one = new Integer(1);
1154	<	static final Integer two = new Integer(2);
1155	<	static final Integer three  = new Integer(3);
1156	<	static final Integer four  = new Integer(4);
1157	<	static final Integer five  = new Integer(5);
1158	<	static final Integer six = new Integer(6);
1159	<	static final Integer seven = new Integer(7);
1160	<	static final Integer eight = new Integer(8);
1161	<	static final Integer nine = new Integer(9);
1162	<	static final Integer m1  = new Integer(-1);
1163	<	static final Integer m2  = new Integer(-2);
1164	<	static final Integer m3  = new Integer(-3);
1165	<	static final Integer m4 = new Integer(-4);
1166	<	static final Integer m5 = new Integer(-5);
1167	<	static final Integer m10 = new Integer(-10);
1152	>	public static final Integer zero  = new Integer(0);
1153	>	public static final Integer one   = new Integer(1);
1154	>	public static final Integer two   = new Integer(2);
1155	>	public static final Integer three = new Integer(3);
1156	>	public static final Integer four  = new Integer(4);
1157	>	public static final Integer five  = new Integer(5);
1158	>	public static final Integer six   = new Integer(6);
1159	>	public static final Integer seven = new Integer(7);
1160	>	public static final Integer eight = new Integer(8);
1161	>	public static final Integer nine  = new Integer(9);
1162	>	public static final Integer m1  = new Integer(-1);
1163	>	public static final Integer m2  = new Integer(-2);
1164	>	public static final Integer m3  = new Integer(-3);
1165	>	public static final Integer m4  = new Integer(-4);
1166	>	public static final Integer m5  = new Integer(-5);
1167	>	public static final Integer m6  = new Integer(-6);
1168	>	public static final Integer m10 = new Integer(-10);
1169	>
1170	>	/**
1171	>	* Runs Runnable r with a security policy that permits precisely
1172	>	* the specified permissions.  If there is no current security
1173	>	* manager, the runnable is run twice, both with and without a
1174	>	* security manager.  We require that any security manager permit
1175	>	* getPolicy/setPolicy.
1176	>	*/
1177	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1178	>	SecurityManager sm = System.getSecurityManager();
1179	>	if (sm == null) {
1180	>	r.run();
1181	>	}
1182	>	runWithSecurityManagerWithPermissions(r, permissions);
1183	>	}
1184
1185	+	/**
1186	+	* Runs Runnable r with a security policy that permits precisely
1187	+	* the specified permissions.  If there is no current security
1188	+	* manager, a temporary one is set for the duration of the
1189	+	* Runnable.  We require that any security manager permit
1190	+	* getPolicy/setPolicy.
1191	+	*/
1192	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1193	+	Permission... permissions) {
1194	+	SecurityManager sm = System.getSecurityManager();
1195	+	if (sm == null) {
1196	+	Policy savedPolicy = Policy.getPolicy();
1197	+	try {
1198	+	Policy.setPolicy(permissivePolicy());
1199	+	System.setSecurityManager(new SecurityManager());
1200	+	runWithSecurityManagerWithPermissions(r, permissions);
1201	+	} finally {
1202	+	System.setSecurityManager(null);
1203	+	Policy.setPolicy(savedPolicy);
1204	+	}
1205	+	} else {
1206	+	Policy savedPolicy = Policy.getPolicy();
1207	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1208	+	Policy.setPolicy(policy);
1209	+
1210	+	try {
1211	+	r.run();
1212	+	} finally {
1213	+	policy.addPermission(new SecurityPermission("setPolicy"));
1214	+	Policy.setPolicy(savedPolicy);
1215	+	}
1216	+	}
1217	+	}
1218	+
1219	+	/**
1220	+	* Runs a runnable without any permissions.
1221	+	*/
1222	+	public void runWithoutPermissions(Runnable r) {
1223	+	runWithPermissions(r);
1224	+	}
1225
1226		/**
1227		* A security policy where new permissions can be dynamically added
1228		* or all cleared.
1229		*/
1230	<	static class AdjustablePolicy extends java.security.Policy {
1230	>	public static class AdjustablePolicy extends java.security.Policy {
1231		Permissions perms = new Permissions();
1232	<	AdjustablePolicy() { }
1232	>	AdjustablePolicy(Permission... permissions) {
1233	>	for (Permission permission : permissions)
1234	>	perms.add(permission);
1235	>	}
1236		void addPermission(Permission perm) { perms.add(perm); }
1237		void clearPermissions() { perms = new Permissions(); }
1238	<	public PermissionCollection getPermissions(CodeSource cs) {
1239	<	return perms;
1240	<	}
1241	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1242	<	return perms;
1243	<	}
1244	<	public boolean implies(ProtectionDomain pd, Permission p) {
1245	<	return perms.implies(p);
1246	<	}
1247	<	public void refresh() {}
1238	>	public PermissionCollection getPermissions(CodeSource cs) {
1239	>	return perms;
1240	>	}
1241	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1242	>	return perms;
1243	>	}
1244	>	public boolean implies(ProtectionDomain pd, Permission p) {
1245	>	return perms.implies(p);
1246	>	}
1247	>	public void refresh() {}
1248	>	public String toString() {
1249	>	List<Permission> ps = new ArrayList<>();
1250	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1251	>	ps.add(e.nextElement());
1252	>	return "AdjustablePolicy with permissions " + ps;
1253	>	}
1254		}
1255
1256	+	/**
1257	+	* Returns a policy containing all the permissions we ever need.
1258	+	*/
1259	+	public static Policy permissivePolicy() {
1260	+	return new AdjustablePolicy
1261	+	// Permissions j.u.c. needs directly
1262	+	(new RuntimePermission("modifyThread"),
1263	+	new RuntimePermission("getClassLoader"),
1264	+	new RuntimePermission("setContextClassLoader"),
1265	+	// Permissions needed to change permissions!
1266	+	new SecurityPermission("getPolicy"),
1267	+	new SecurityPermission("setPolicy"),
1268	+	new RuntimePermission("setSecurityManager"),
1269	+	// Permissions needed by the junit test harness
1270	+	new RuntimePermission("accessDeclaredMembers"),
1271	+	new PropertyPermission("*", "read"),
1272	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1273	+	}
1274
1275	<	// Some convenient Runnable classes
1275	>	/**
1276	>	* Sleeps until the given time has elapsed.
1277	>	* Throws AssertionError if interrupted.
1278	>	*/
1279	>	static void sleep(long millis) {
1280	>	try {
1281	>	delay(millis);
1282	>	} catch (InterruptedException fail) {
1283	>	throw new AssertionError("Unexpected InterruptedException", fail);
1284	>	}
1285	>	}
1286
1287	<	static class NoOpRunnable implements Runnable {
1288	<	public void run() {}
1287	>	/**
1288	>	* Spin-waits up to the specified number of milliseconds for the given
1289	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1290	>	*/
1291	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1292	>	long startTime = 0L;
1293	>	for (;;) {
1294	>	Thread.State s = thread.getState();
1295	>	if (s == Thread.State.BLOCKED ||
1296	>	s == Thread.State.WAITING ||
1297	>	s == Thread.State.TIMED_WAITING)
1298	>	return;
1299	>	else if (s == Thread.State.TERMINATED)
1300	>	fail("Unexpected thread termination");
1301	>	else if (startTime == 0L)
1302	>	startTime = System.nanoTime();
1303	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1304	>	threadAssertTrue(thread.isAlive());
1305	>	fail("timed out waiting for thread to enter wait state");
1306	>	}
1307	>	Thread.yield();
1308	>	}
1309		}
1310
1311	<	static class NoOpCallable implements Callable {
1312	<	public Object call() { return Boolean.TRUE; }
1311	>	/**
1312	>	* Spin-waits up to the specified number of milliseconds for the given
1313	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1314	>	* and additionally satisfy the given condition.
1315	>	*/
1316	>	void waitForThreadToEnterWaitState(
1317	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1318	>	long startTime = 0L;
1319	>	for (;;) {
1320	>	Thread.State s = thread.getState();
1321	>	if (s == Thread.State.BLOCKED ||
1322	>	s == Thread.State.WAITING ||
1323	>	s == Thread.State.TIMED_WAITING) {
1324	>	try {
1325	>	if (waitingForGodot.call())
1326	>	return;
1327	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1328	>	}
1329	>	else if (s == Thread.State.TERMINATED)
1330	>	fail("Unexpected thread termination");
1331	>	else if (startTime == 0L)
1332	>	startTime = System.nanoTime();
1333	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1334	>	threadAssertTrue(thread.isAlive());
1335	>	fail("timed out waiting for thread to enter wait state");
1336	>	}
1337	>	Thread.yield();
1338	>	}
1339		}
1340
1341	<	static final String TEST_STRING = "a test string";
1341	>	/**
1342	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1343	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1344	>	*/
1345	>	void waitForThreadToEnterWaitState(Thread thread) {
1346	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1347	>	}
1348
1349	<	static class StringTask implements Callable<String> {
1350	<	public String call() { return TEST_STRING; }
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	>	* and additionally satisfy the given condition.
1353	>	*/
1354	>	void waitForThreadToEnterWaitState(
1355	>	Thread thread, Callable<Boolean> waitingForGodot) {
1356	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1357		}
1358
1359	<	static class NPETask implements Callable<String> {
1360	<	public String call() { throw new NullPointerException(); }
1359	>	/**
1360	>	* Returns the number of milliseconds since time given by
1361	>	* startNanoTime, which must have been previously returned from a
1362	>	* call to {@link System#nanoTime()}.
1363	>	*/
1364	>	static long millisElapsedSince(long startNanoTime) {
1365	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1366		}
1367
1368	<	static class CallableOne implements Callable<Integer> {
1369	<	public Integer call() { return one; }
1368	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1369	>	//         long startTime = System.nanoTime();
1370	>	//         try {
1371	>	//             r.run();
1372	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1373	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1374	>	//             throw new AssertionError("did not return promptly");
1375	>	//     }
1376	>
1377	>	//     void assertTerminatesPromptly(Runnable r) {
1378	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1379	>	//     }
1380	>
1381	>	/**
1382	>	* Checks that timed f.get() returns the expected value, and does not
1383	>	* wait for the timeout to elapse before returning.
1384	>	*/
1385	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1386	>	long startTime = System.nanoTime();
1387	>	try {
1388	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1389	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1390	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1391	>	throw new AssertionError("timed get did not return promptly");
1392		}
1393
1394	<	class ShortRunnable implements Runnable {
1395	<	public void run() {
1396	<	try {
1397	<	Thread.sleep(SHORT_DELAY_MS);
1398	<	}
1399	<	catch(Exception e) {
1400	<	threadUnexpectedException();
1394	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1395	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1396	>	}
1397	>
1398	>	/**
1399	>	* Returns a new started daemon Thread running the given runnable.
1400	>	*/
1401	>	Thread newStartedThread(Runnable runnable) {
1402	>	Thread t = new Thread(runnable);
1403	>	t.setDaemon(true);
1404	>	t.start();
1405	>	return t;
1406	>	}
1407	>
1408	>	/**
1409	>	* Waits for the specified time (in milliseconds) for the thread
1410	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1411	>	* the thread (in the hope that it may terminate later) and fails.
1412	>	*/
1413	>	void awaitTermination(Thread t, long timeoutMillis) {
1414	>	try {
1415	>	t.join(timeoutMillis);
1416	>	} catch (InterruptedException fail) {
1417	>	threadUnexpectedException(fail);
1418	>	} finally {
1419	>	if (t.getState() != Thread.State.TERMINATED) {
1420	>	t.interrupt();
1421	>	threadFail("timed out waiting for thread to terminate");
1422		}
1423		}
1424		}
1425
1426	<	class ShortInterruptedRunnable implements Runnable {
1427	<	public void run() {
1426	>	/**
1427	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1428	>	* terminate (using {@link Thread#join(long)}), else interrupts
1429	>	* the thread (in the hope that it may terminate later) and fails.
1430	>	*/
1431	>	void awaitTermination(Thread t) {
1432	>	awaitTermination(t, LONG_DELAY_MS);
1433	>	}
1434	>
1435	>	// Some convenient Runnable classes
1436	>
1437	>	public abstract class CheckedRunnable implements Runnable {
1438	>	protected abstract void realRun() throws Throwable;
1439	>
1440	>	public final void run() {
1441		try {
1442	<	Thread.sleep(SHORT_DELAY_MS);
1443	<	threadShouldThrow();
1444	<	}
389	<	catch(InterruptedException success) {
1442	>	realRun();
1443	>	} catch (Throwable fail) {
1444	>	threadUnexpectedException(fail);
1445		}
1446		}
1447		}
1448
1449	<	class SmallRunnable implements Runnable {
1450	<	public void run() {
1449	>	public abstract class ThreadShouldThrow extends Thread {
1450	>	protected abstract void realRun() throws Throwable;
1451	>
1452	>	final Class<?> exceptionClass;
1453	>
1454	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1455	>	this.exceptionClass = exceptionClass;
1456	>	}
1457	>
1458	>	public final void run() {
1459		try {
1460	<	Thread.sleep(SMALL_DELAY_MS);
1461	<	}
1462	<	catch(Exception e) {
1463	<	threadUnexpectedException();
1460	>	realRun();
1461	>	threadShouldThrow(exceptionClass.getSimpleName());
1462	>	} catch (Throwable t) {
1463	>	if (! exceptionClass.isInstance(t))
1464	>	threadUnexpectedException(t);
1465		}
1466		}
1467		}
1468
1469	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1470	<	public void run() {
1469	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1470	>	protected abstract void realRun() throws Throwable;
1471	>
1472	>	public final void run() {
1473		try {
1474	<	Thread.sleep(SMALL_DELAY_MS);
1475	<	}
1476	<	catch(Exception e) {
1474	>	realRun();
1475	>	threadShouldThrow("InterruptedException");
1476	>	} catch (InterruptedException success) {
1477	>	threadAssertFalse(Thread.interrupted());
1478	>	} catch (Throwable fail) {
1479	>	threadUnexpectedException(fail);
1480		}
1481		}
1482		}
1483
1484	<	class SmallCallable implements Callable {
1485	<	public Object call() {
1484	>	public abstract class CheckedCallable<T> implements Callable<T> {
1485	>	protected abstract T realCall() throws Throwable;
1486	>
1487	>	public final T call() {
1488		try {
1489	<	Thread.sleep(SMALL_DELAY_MS);
1490	<	}
1491	<	catch(Exception e) {
1492	<	threadUnexpectedException();
1489	>	return realCall();
1490	>	} catch (Throwable fail) {
1491	>	threadUnexpectedException(fail);
1492	>	return null;
1493		}
423	–	return Boolean.TRUE;
1494		}
1495		}
1496
1497	<	class SmallInterruptedRunnable implements Runnable {
1498	<	public void run() {
1497	>	public abstract class CheckedInterruptedCallable<T>
1498	>	implements Callable<T> {
1499	>	protected abstract T realCall() throws Throwable;
1500	>
1501	>	public final T call() {
1502		try {
1503	<	Thread.sleep(SMALL_DELAY_MS);
1504	<	threadShouldThrow();
1505	<	}
1506	<	catch(InterruptedException success) {
1503	>	T result = realCall();
1504	>	threadShouldThrow("InterruptedException");
1505	>	return result;
1506	>	} catch (InterruptedException success) {
1507	>	threadAssertFalse(Thread.interrupted());
1508	>	} catch (Throwable fail) {
1509	>	threadUnexpectedException(fail);
1510		}
1511	+	return null;
1512		}
1513		}
1514
1515	+	public static class NoOpRunnable implements Runnable {
1516	+	public void run() {}
1517	+	}
1518
1519	<	class MediumRunnable implements Runnable {
1520	<	public void run() {
1521	<	try {
1522	<	Thread.sleep(MEDIUM_DELAY_MS);
1523	<	}
1524	<	catch(Exception e) {
1525	<	threadUnexpectedException();
1526	<	}
1519	>	public static class NoOpCallable implements Callable {
1520	>	public Object call() { return Boolean.TRUE; }
1521	>	}
1522	>
1523	>	public static final String TEST_STRING = "a test string";
1524	>
1525	>	public static class StringTask implements Callable<String> {
1526	>	final String value;
1527	>	public StringTask() { this(TEST_STRING); }
1528	>	public StringTask(String value) { this.value = value; }
1529	>	public String call() { return value; }
1530	>	}
1531	>
1532	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1533	>	return new CheckedCallable<String>() {
1534	>	protected String realCall() {
1535	>	try {
1536	>	latch.await();
1537	>	} catch (InterruptedException quittingTime) {}
1538	>	return TEST_STRING;
1539	>	}};
1540	>	}
1541	>
1542	>	public Runnable countDowner(final CountDownLatch latch) {
1543	>	return new CheckedRunnable() {
1544	>	public void realRun() throws InterruptedException {
1545	>	latch.countDown();
1546	>	}};
1547	>	}
1548	>
1549	>	class LatchAwaiter extends CheckedRunnable {
1550	>	static final int NEW = 0;
1551	>	static final int RUNNING = 1;
1552	>	static final int DONE = 2;
1553	>	final CountDownLatch latch;
1554	>	int state = NEW;
1555	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1556	>	public void realRun() throws InterruptedException {
1557	>	state = 1;
1558	>	await(latch);
1559	>	state = 2;
1560		}
1561		}
1562
1563	<	class MediumInterruptedRunnable implements Runnable {
1564	<	public void run() {
1565	<	try {
1566	<	Thread.sleep(MEDIUM_DELAY_MS);
1567	<	threadShouldThrow();
1568	<	}
1569	<	catch(InterruptedException success) {
1570	<	}
1563	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1564	>	return new LatchAwaiter(latch);
1565	>	}
1566	>
1567	>	public void await(CountDownLatch latch, long timeoutMillis) {
1568	>	try {
1569	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1570	>	fail("timed out waiting for CountDownLatch for "
1571	>	+ (timeoutMillis/1000) + " sec");
1572	>	} catch (Throwable fail) {
1573	>	threadUnexpectedException(fail);
1574		}
1575		}
1576
1577	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1578	<	public void run() {
1579	<	try {
1580	<	Thread.sleep(MEDIUM_DELAY_MS);
1581	<	}
1582	<	catch(InterruptedException success) {
1583	<	}
1577	>	public void await(CountDownLatch latch) {
1578	>	await(latch, LONG_DELAY_MS);
1579	>	}
1580	>
1581	>	public void await(Semaphore semaphore) {
1582	>	try {
1583	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1584	>	fail("timed out waiting for Semaphore for "
1585	>	+ (LONG_DELAY_MS/1000) + " sec");
1586	>	} catch (Throwable fail) {
1587	>	threadUnexpectedException(fail);
1588		}
1589		}
1590
1591	<	class LongPossiblyInterruptedRunnable implements Runnable {
1592	<	public void run() {
1591	>	public void await(CyclicBarrier barrier) {
1592	>	try {
1593	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1594	>	} catch (Throwable fail) {
1595	>	threadUnexpectedException(fail);
1596	>	}
1597	>	}
1598	>
1599	>	//     /**
1600	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1601	>	//      */
1602	>	//     public void await(AtomicBoolean flag) {
1603	>	//         await(flag, LONG_DELAY_MS);
1604	>	//     }
1605	>
1606	>	//     /**
1607	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1608	>	//      */
1609	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1610	>	//         long startTime = System.nanoTime();
1611	>	//         while (!flag.get()) {
1612	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1613	>	//                 throw new AssertionError("timed out");
1614	>	//             Thread.yield();
1615	>	//         }
1616	>	//     }
1617	>
1618	>	public static class NPETask implements Callable<String> {
1619	>	public String call() { throw new NullPointerException(); }
1620	>	}
1621	>
1622	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1623	>	protected void realRun() {
1624		try {
1625	<	Thread.sleep(LONG_DELAY_MS);
1626	<	}
476	<	catch(InterruptedException success) {
477	<	}
1625	>	delay(SMALL_DELAY_MS);
1626	>	} catch (InterruptedException ok) {}
1627		}
1628		}
1629
1630	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1631	+	return new CheckedRunnable() {
1632	+	protected void realRun() {
1633	+	try {
1634	+	delay(timeoutMillis);
1635	+	} catch (InterruptedException ok) {}
1636	+	}};
1637	+	}
1638	+
1639		/**
1640		* For use as ThreadFactory in constructors
1641		*/
1642	<	static class SimpleThreadFactory implements ThreadFactory{
1643	<	public Thread newThread(Runnable r){
1642	>	public static class SimpleThreadFactory implements ThreadFactory {
1643	>	public Thread newThread(Runnable r) {
1644		return new Thread(r);
1645	<	}
1645	>	}
1646	>	}
1647	>
1648	>	public interface TrackedRunnable extends Runnable {
1649	>	boolean isDone();
1650		}
1651
1652	<	static class TrackedShortRunnable implements Runnable {
1653	<	volatile boolean done = false;
1652	>	public static class TrackedNoOpRunnable implements Runnable {
1653	>	public volatile boolean done = false;
1654		public void run() {
1655	+	done = true;
1656	+	}
1657	+	}
1658	+
1659	+	/**
1660	+	* Analog of CheckedRunnable for RecursiveAction
1661	+	*/
1662	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1663	+	protected abstract void realCompute() throws Throwable;
1664	+
1665	+	@Override protected final void compute() {
1666		try {
1667	<	Thread.sleep(SMALL_DELAY_MS);
1668	<	done = true;
1669	<	} catch(Exception e){
1667	>	realCompute();
1668	>	} catch (Throwable fail) {
1669	>	threadUnexpectedException(fail);
1670		}
1671		}
1672		}
1673
1674	<	static class TrackedMediumRunnable implements Runnable {
1675	<	volatile boolean done = false;
1676	<	public void run() {
1674	>	/**
1675	>	* Analog of CheckedCallable for RecursiveTask
1676	>	*/
1677	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1678	>	protected abstract T realCompute() throws Throwable;
1679	>
1680	>	@Override protected final T compute() {
1681		try {
1682	<	Thread.sleep(MEDIUM_DELAY_MS);
1683	<	done = true;
1684	<	} catch(Exception e){
1682	>	return realCompute();
1683	>	} catch (Throwable fail) {
1684	>	threadUnexpectedException(fail);
1685	>	return null;
1686		}
1687		}
1688		}
1689
1690	<	static class TrackedLongRunnable implements Runnable {
1691	<	volatile boolean done = false;
1692	<	public void run() {
1690	>	/**
1691	>	* For use as RejectedExecutionHandler in constructors
1692	>	*/
1693	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1694	>	public void rejectedExecution(Runnable r,
1695	>	ThreadPoolExecutor executor) {}
1696	>	}
1697	>
1698	>	/**
1699	>	* A CyclicBarrier that uses timed await and fails with
1700	>	* AssertionErrors instead of throwing checked exceptions.
1701	>	*/
1702	>	public static class CheckedBarrier extends CyclicBarrier {
1703	>	public CheckedBarrier(int parties) { super(parties); }
1704	>
1705	>	public int await() {
1706		try {
1707	<	Thread.sleep(LONG_DELAY_MS);
1708	<	done = true;
1709	<	} catch(Exception e){
1707	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1708	>	} catch (TimeoutException timedOut) {
1709	>	throw new AssertionError("timed out");
1710	>	} catch (Exception fail) {
1711	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1712		}
1713		}
1714		}
1715
1716	<	static class TrackedNoOpRunnable implements Runnable {
1717	<	volatile boolean done = false;
1718	<	public void run() {
1719	<	done = true;
1716	>	void checkEmpty(BlockingQueue q) {
1717	>	try {
1718	>	assertTrue(q.isEmpty());
1719	>	assertEquals(0, q.size());
1720	>	assertNull(q.peek());
1721	>	assertNull(q.poll());
1722	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1723	>	assertEquals(q.toString(), "[]");
1724	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1725	>	assertFalse(q.iterator().hasNext());
1726	>	try {
1727	>	q.element();
1728	>	shouldThrow();
1729	>	} catch (NoSuchElementException success) {}
1730	>	try {
1731	>	q.iterator().next();
1732	>	shouldThrow();
1733	>	} catch (NoSuchElementException success) {}
1734	>	try {
1735	>	q.remove();
1736	>	shouldThrow();
1737	>	} catch (NoSuchElementException success) {}
1738	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1739	>	}
1740	>
1741	>	void assertSerialEquals(Object x, Object y) {
1742	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1743	>	}
1744	>
1745	>	void assertNotSerialEquals(Object x, Object y) {
1746	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1747	>	}
1748	>
1749	>	byte[] serialBytes(Object o) {
1750	>	try {
1751	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1752	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1753	>	oos.writeObject(o);
1754	>	oos.flush();
1755	>	oos.close();
1756	>	return bos.toByteArray();
1757	>	} catch (Throwable fail) {
1758	>	threadUnexpectedException(fail);
1759	>	return new byte[0];
1760	>	}
1761	>	}
1762	>
1763	>	void assertImmutable(final Object o) {
1764	>	if (o instanceof Collection) {
1765	>	assertThrows(
1766	>	UnsupportedOperationException.class,
1767	>	new Runnable() { public void run() {
1768	>	((Collection) o).add(null);}});
1769	>	}
1770	>	}
1771	>
1772	>	@SuppressWarnings("unchecked")
1773	>	<T> T serialClone(T o) {
1774	>	try {
1775	>	ObjectInputStream ois = new ObjectInputStream
1776	>	(new ByteArrayInputStream(serialBytes(o)));
1777	>	T clone = (T) ois.readObject();
1778	>	if (o == clone) assertImmutable(o);
1779	>	assertSame(o.getClass(), clone.getClass());
1780	>	return clone;
1781	>	} catch (Throwable fail) {
1782	>	threadUnexpectedException(fail);
1783	>	return null;
1784		}
1785		}
1786
1787	<	static class TrackedCallable implements Callable {
1788	<	volatile boolean done = false;
1789	<	public Object call() {
1790	<	try {
1791	<	Thread.sleep(SMALL_DELAY_MS);
1792	<	done = true;
1793	<	} catch(Exception e){
1787	>	/**
1788	>	* A version of serialClone that leaves error handling (for
1789	>	* e.g. NotSerializableException) up to the caller.
1790	>	*/
1791	>	@SuppressWarnings("unchecked")
1792	>	<T> T serialClonePossiblyFailing(T o)
1793	>	throws ReflectiveOperationException, java.io.IOException {
1794	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1795	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1796	>	oos.writeObject(o);
1797	>	oos.flush();
1798	>	oos.close();
1799	>	ObjectInputStream ois = new ObjectInputStream
1800	>	(new ByteArrayInputStream(bos.toByteArray()));
1801	>	T clone = (T) ois.readObject();
1802	>	if (o == clone) assertImmutable(o);
1803	>	assertSame(o.getClass(), clone.getClass());
1804	>	return clone;
1805	>	}
1806	>
1807	>	/**
1808	>	* If o implements Cloneable and has a public clone method,
1809	>	* returns a clone of o, else null.
1810	>	*/
1811	>	@SuppressWarnings("unchecked")
1812	>	<T> T cloneableClone(T o) {
1813	>	if (!(o instanceof Cloneable)) return null;
1814	>	final T clone;
1815	>	try {
1816	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1817	>	} catch (NoSuchMethodException ok) {
1818	>	return null;
1819	>	} catch (ReflectiveOperationException unexpected) {
1820	>	throw new Error(unexpected);
1821	>	}
1822	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1823	>	assertSame(o.getClass(), clone.getClass());
1824	>	return clone;
1825	>	}
1826	>
1827	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1828	>	Runnable... throwingActions) {
1829	>	for (Runnable throwingAction : throwingActions) {
1830	>	boolean threw = false;
1831	>	try { throwingAction.run(); }
1832	>	catch (Throwable t) {
1833	>	threw = true;
1834	>	if (!expectedExceptionClass.isInstance(t))
1835	>	throw new AssertionError(
1836	>	"Expected " + expectedExceptionClass.getName() +
1837	>	", got " + t.getClass().getName(),
1838	>	t);
1839		}
1840	<	return Boolean.TRUE;
1840	>	if (!threw)
1841	>	shouldThrow(expectedExceptionClass.getName());
1842		}
1843		}
1844
1845	+	public void assertIteratorExhausted(Iterator<?> it) {
1846	+	try {
1847	+	it.next();
1848	+	shouldThrow();
1849	+	} catch (NoSuchElementException success) {}
1850	+	assertFalse(it.hasNext());
1851	+	}
1852	+
1853	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1854	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1855	+	}
1856	+
1857	+	public Runnable runnableThrowing(final RuntimeException ex) {
1858	+	return new Runnable() { public void run() { throw ex; }};
1859	+	}
1860	+
1861	+	/** A reusable thread pool to be shared by tests. */
1862	+	static final ExecutorService cachedThreadPool =
1863	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1864	+	1000L, MILLISECONDS,
1865	+	new SynchronousQueue<Runnable>());
1866	+
1867	+	static <T> void shuffle(T[] array) {
1868	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1869	+	}
1870
1871		/**
1872	<	* For use as RejectedExecutionHandler in constructors
1872	>	* Returns the same String as would be returned by {@link
1873	>	* Object#toString}, whether or not the given object's class
1874	>	* overrides toString().
1875	>	*
1876	>	* @see System#identityHashCode
1877		*/
1878	<	static class NoOpREHandler implements RejectedExecutionHandler{
1879	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1878	>	static String identityString(Object x) {
1879	>	return x.getClass().getName()
1880	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1881	>	}
1882	>
1883	>	// --- Shared assertions for Executor tests ---
1884	>
1885	>	/**
1886	>	* Returns maximum number of tasks that can be submitted to given
1887	>	* pool (with bounded queue) before saturation (when submission
1888	>	* throws RejectedExecutionException).
1889	>	*/
1890	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1891	>	BlockingQueue<Runnable> q = pool.getQueue();
1892	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1893	>	}
1894	>
1895	>	@SuppressWarnings("FutureReturnValueIgnored")
1896	>	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1897	>	try {
1898	>	e.execute((Runnable) null);
1899	>	shouldThrow();
1900	>	} catch (NullPointerException success) {}
1901	>
1902	>	if (! (e instanceof ExecutorService)) return;
1903	>	ExecutorService es = (ExecutorService) e;
1904	>	try {
1905	>	es.submit((Runnable) null);
1906	>	shouldThrow();
1907	>	} catch (NullPointerException success) {}
1908	>	try {
1909	>	es.submit((Runnable) null, Boolean.TRUE);
1910	>	shouldThrow();
1911	>	} catch (NullPointerException success) {}
1912	>	try {
1913	>	es.submit((Callable) null);
1914	>	shouldThrow();
1915	>	} catch (NullPointerException success) {}
1916	>
1917	>	if (! (e instanceof ScheduledExecutorService)) return;
1918	>	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1919	>	try {
1920	>	ses.schedule((Runnable) null,
1921	>	randomTimeout(), randomTimeUnit());
1922	>	shouldThrow();
1923	>	} catch (NullPointerException success) {}
1924	>	try {
1925	>	ses.schedule((Callable) null,
1926	>	randomTimeout(), randomTimeUnit());
1927	>	shouldThrow();
1928	>	} catch (NullPointerException success) {}
1929	>	try {
1930	>	ses.scheduleAtFixedRate((Runnable) null,
1931	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1932	>	shouldThrow();
1933	>	} catch (NullPointerException success) {}
1934	>	try {
1935	>	ses.scheduleWithFixedDelay((Runnable) null,
1936	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1937	>	shouldThrow();
1938	>	} catch (NullPointerException success) {}
1939	>	}
1940	>
1941	>	void setRejectedExecutionHandler(
1942	>	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1943	>	p.setRejectedExecutionHandler(handler);
1944	>	assertSame(handler, p.getRejectedExecutionHandler());
1945	>	}
1946	>
1947	>	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1948	>	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1949	>	final long savedTaskCount = p.getTaskCount();
1950	>	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1951	>	final int savedQueueSize = p.getQueue().size();
1952	>	final boolean stock = (p.getClass().getClassLoader() == null);
1953	>
1954	>	Runnable r = () -> {};
1955	>	Callable<Boolean> c = () -> Boolean.TRUE;
1956	>
1957	>	class Recorder implements RejectedExecutionHandler {
1958	>	public volatile Runnable r = null;
1959	>	public volatile ThreadPoolExecutor p = null;
1960	>	public void reset() { r = null; p = null; }
1961	>	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1962	>	assertNull(this.r);
1963	>	assertNull(this.p);
1964	>	this.r = r;
1965	>	this.p = p;
1966	>	}
1967	>	}
1968	>
1969	>	// check custom handler is invoked exactly once per task
1970	>	Recorder recorder = new Recorder();
1971	>	setRejectedExecutionHandler(p, recorder);
1972	>	for (int i = 2; i--> 0; ) {
1973	>	recorder.reset();
1974	>	p.execute(r);
1975	>	if (stock && p.getClass() == ThreadPoolExecutor.class)
1976	>	assertSame(r, recorder.r);
1977	>	assertSame(p, recorder.p);
1978	>
1979	>	recorder.reset();
1980	>	assertFalse(p.submit(r).isDone());
1981	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1982	>	assertSame(p, recorder.p);
1983	>
1984	>	recorder.reset();
1985	>	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1986	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1987	>	assertSame(p, recorder.p);
1988	>
1989	>	recorder.reset();
1990	>	assertFalse(p.submit(c).isDone());
1991	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1992	>	assertSame(p, recorder.p);
1993	>
1994	>	if (p instanceof ScheduledExecutorService) {
1995	>	ScheduledExecutorService s = (ScheduledExecutorService) p;
1996	>	ScheduledFuture<?> future;
1997	>
1998	>	recorder.reset();
1999	>	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2000	>	assertFalse(future.isDone());
2001	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2002	>	assertSame(p, recorder.p);
2003	>
2004	>	recorder.reset();
2005	>	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2006	>	assertFalse(future.isDone());
2007	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2008	>	assertSame(p, recorder.p);
2009	>
2010	>	recorder.reset();
2011	>	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2012	>	assertFalse(future.isDone());
2013	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2014	>	assertSame(p, recorder.p);
2015	>
2016	>	recorder.reset();
2017	>	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2018	>	assertFalse(future.isDone());
2019	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2020	>	assertSame(p, recorder.p);
2021	>	}
2022	>	}
2023	>
2024	>	// Checking our custom handler above should be sufficient, but
2025	>	// we add some integration tests of standard handlers.
2026	>	final AtomicReference<Thread> thread = new AtomicReference<>();
2027	>	final Runnable setThread = () -> thread.set(Thread.currentThread());
2028	>
2029	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2030	>	try {
2031	>	p.execute(setThread);
2032	>	shouldThrow();
2033	>	} catch (RejectedExecutionException success) {}
2034	>	assertNull(thread.get());
2035	>
2036	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2037	>	p.execute(setThread);
2038	>	assertNull(thread.get());
2039	>
2040	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2041	>	p.execute(setThread);
2042	>	if (p.isShutdown())
2043	>	assertNull(thread.get());
2044	>	else
2045	>	assertSame(Thread.currentThread(), thread.get());
2046	>
2047	>	setRejectedExecutionHandler(p, savedHandler);
2048	>
2049	>	// check that pool was not perturbed by handlers
2050	>	assertEquals(savedTaskCount, p.getTaskCount());
2051	>	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2052	>	assertEquals(savedQueueSize, p.getQueue().size());
2053		}
549	–
550	–
2054		}

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