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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.6 by dl, Sun Oct 5 23:00:40 2003 UTC vs.
Revision 1.234 by jsr166, Mon Jul 17 22:27:31 2017 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.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.AssertionFailedError;
103	+	import junit.framework.Test;
104	+	import junit.framework.TestCase;
105	+	import junit.framework.TestResult;
106	+	import junit.framework.TestSuite;
107
108		/**
109		* Base class for JSR166 Junit TCK tests.  Defines some constants,
110		* utility methods and classes, as well as a simple framework for
111		* helping to make sure that assertions failing in generated threads
112		* cause the associated test that generated them to itself fail (which
113	<	* JUnit doe not otherwise arrange).  The rules for creating such
113	>	* JUnit does not otherwise arrange).  The rules for creating such
114		* tests are:
115		*
116		* <ol>
117		*
118	<	* <li> All assertions in code running in generated threads must use
119	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
120	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
121	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
118	>	* <li>All assertions in code running in generated threads must use
119	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
120	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
121	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
122		* particularly recommended) for other code to use these forms too.
123		* Only the most typically used JUnit assertion methods are defined
124	<	* this way, but enough to live with.</li>
124	>	* this way, but enough to live with.
125		*
126	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
127	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
126	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
127	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
128		* them. These methods are used to clear and check for thread
129	<	* assertion failures.</li>
129	>	* assertion failures.
130		*
131	<	* <li>All delays and timeouts must use one of the constants <tt>
132	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
133	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
131	>	* <li>All delays and timeouts must use one of the constants {@code
132	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
133	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
134		* discriminable from zero time, and always allows enough time for the
135		* small amounts of computation (creating a thread, calling a few
136		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
137		* is always discriminable as larger than SHORT and smaller than
138		* MEDIUM.  And so on. These constants are set to conservative values,
139		* but even so, if there is ever any doubt, they can all be increased
140	<	* in one spot to rerun tests on slower platforms</li>
140	>	* in one spot to rerun tests on slower platforms.
141		*
142	<	* <li> All threads generated must be joined inside each test case
143	<	* method (or <tt>fail</tt> to do so) before returning from the
144	<	* method. The <tt> joinPool</tt> method can be used to do this when
145	<	* using Executors.</li>
142	>	* <li>All threads generated must be joined inside each test case
143	>	* method (or {@code fail} to do so) before returning from the
144	>	* method. The {@code joinPool} method can be used to do this when
145	>	* using Executors.
146		*
147		* </ol>
148		*
149	<	* <p> <b>Other notes</b>
149	>	* <p><b>Other notes</b>
150		* <ul>
151		*
152	<	* <li> Usually, there is one testcase method per JSR166 method
152	>	* <li>Usually, there is one testcase method per JSR166 method
153		* covering "normal" operation, and then as many exception-testing
154		* methods as there are exceptions the method can throw. Sometimes
155		* there are multiple tests per JSR166 method when the different
156		* "normal" behaviors differ significantly. And sometimes testcases
157	<	* cover multiple methods when they cannot be tested in
158	<	* isolation.</li>
159	<	*
66	<	* <li> The documentation style for testcases is to provide as javadoc
157	>	* cover multiple methods when they cannot be tested in isolation.
158	>	*
159	>	* <li>The documentation style for testcases is to provide as javadoc
160		* a simple sentence or two describing the property that the testcase
161		* method purports to test. The javadocs do not say anything about how
162	<	* the property is tested. To find out, read the code.</li>
162	>	* the property is tested. To find out, read the code.
163		*
164	<	* <li> These tests are "conformance tests", and do not attempt to
164	>	* <li>These tests are "conformance tests", and do not attempt to
165		* test throughput, latency, scalability or other performance factors
166		* (see the separate "jtreg" tests for a set intended to check these
167		* for the most central aspects of functionality.) So, most tests use
168		* the smallest sensible numbers of threads, collection sizes, etc
169	<	* needed to check basic conformance.</li>
169	>	* needed to check basic conformance.
170		*
171		* <li>The test classes currently do not declare inclusion in
172		* any particular package to simplify things for people integrating
173	<	* them in TCK test suites.</li>
173	>	* them in TCK test suites.
174		*
175	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
176	<	* runs all JSR166 unit tests.</li>
175	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
176	>	* runs all JSR166 unit tests.
177		*
178		* </ul>
179		*/
180		public class JSR166TestCase extends TestCase {
181	+	private static final boolean useSecurityManager =
182	+	Boolean.getBoolean("jsr166.useSecurityManager");
183	+
184	+	protected static final boolean expensiveTests =
185	+	Boolean.getBoolean("jsr166.expensiveTests");
186	+
187	+	/**
188	+	* If true, also run tests that are not part of the official tck
189	+	* because they test unspecified implementation details.
190	+	*/
191	+	protected static final boolean testImplementationDetails =
192	+	Boolean.getBoolean("jsr166.testImplementationDetails");
193	+
194		/**
195	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
196	<	*/
197	<	public static void main (String[] args) {
198	<	junit.textui.TestRunner.run (suite());
195	>	* If true, report on stdout all "slow" tests, that is, ones that
196	>	* take more than profileThreshold milliseconds to execute.
197	>	*/
198	>	private static final boolean profileTests =
199	>	Boolean.getBoolean("jsr166.profileTests");
200	>
201	>	/**
202	>	* The number of milliseconds that tests are permitted for
203	>	* execution without being reported, when profileTests is set.
204	>	*/
205	>	private static final long profileThreshold =
206	>	Long.getLong("jsr166.profileThreshold", 100);
207	>
208	>	/**
209	>	* The number of repetitions per test (for tickling rare bugs).
210	>	*/
211	>	private static final int runsPerTest =
212	>	Integer.getInteger("jsr166.runsPerTest", 1);
213	>
214	>	/**
215	>	* The number of repetitions of the test suite (for finding leaks?).
216	>	*/
217	>	private static final int suiteRuns =
218	>	Integer.getInteger("jsr166.suiteRuns", 1);
219	>
220	>	/**
221	>	* Returns the value of the system property, or NaN if not defined.
222	>	*/
223	>	private static float systemPropertyValue(String name) {
224	>	String floatString = System.getProperty(name);
225	>	if (floatString == null)
226	>	return Float.NaN;
227	>	try {
228	>	return Float.parseFloat(floatString);
229	>	} catch (NumberFormatException ex) {
230	>	throw new IllegalArgumentException(
231	>	String.format("Bad float value in system property %s=%s",
232	>	name, floatString));
233	>	}
234		}
235
236		/**
237	<	* Collects all JSR166 unit tests as one suite
238	<	*/
239	<	public static Test suite ( ) {
240	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
241	<
242	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
243	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
244	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
245	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
246	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
247	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
248	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
249	<	suite.addTest(new TestSuite(AtomicLongTest.class));
250	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
251	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
252	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
253	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
254	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
255	<	suite.addTest(new TestSuite(CancellableTaskTest.class));
256	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
257	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
258	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
259	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
260	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
261	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
262	<	suite.addTest(new TestSuite(DelayQueueTest.class));
263	<	suite.addTest(new TestSuite(ExchangerTest.class));
264	<	suite.addTest(new TestSuite(ExecutorsTest.class));
265	<	suite.addTest(new TestSuite(FairSemaphoreTest.class));
266	<	suite.addTest(new TestSuite(FutureTaskTest.class));
267	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
268	<	suite.addTest(new TestSuite(LinkedListTest.class));
269	<	suite.addTest(new TestSuite(LockSupportTest.class));
270	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
271	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
272	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
273	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
274	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
275	<	suite.addTest(new TestSuite(SemaphoreTest.class));
276	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
277	<	suite.addTest(new TestSuite(SystemTest.class));
278	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
279	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
280	<	suite.addTest(new TestSuite(ThreadTest.class));
281	<	suite.addTest(new TestSuite(TimeUnitTest.class));
282	<
237	>	* The scaling factor to apply to standard delays used in tests.
238	>	* May be initialized from any of:
239	>	* - the "jsr166.delay.factor" system property
240	>	* - the "test.timeout.factor" system property (as used by jtreg)
241	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
242	>	* - hard-coded fuzz factor when using a known slowpoke VM
243	>	*/
244	>	private static final float delayFactor = delayFactor();
245	>
246	>	private static float delayFactor() {
247	>	float x;
248	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
249	>	return x;
250	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
251	>	return x;
252	>	String prop = System.getProperty("java.vm.version");
253	>	if (prop != null && prop.matches(".*debug.*"))
254	>	return 4.0f; // How much slower is fastdebug than product?!
255	>	return 1.0f;
256	>	}
257	>
258	>	public JSR166TestCase() { super(); }
259	>	public JSR166TestCase(String name) { super(name); }
260	>
261	>	/**
262	>	* A filter for tests to run, matching strings of the form
263	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
264	>	* Usefully combined with jsr166.runsPerTest.
265	>	*/
266	>	private static final Pattern methodFilter = methodFilter();
267	>
268	>	private static Pattern methodFilter() {
269	>	String regex = System.getProperty("jsr166.methodFilter");
270	>	return (regex == null) ? null : Pattern.compile(regex);
271	>	}
272	>
273	>	// Instrumentation to debug very rare, but very annoying hung test runs.
274	>	static volatile TestCase currentTestCase;
275	>	// static volatile int currentRun = 0;
276	>	static {
277	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
278	>	// Avoid spurious reports with enormous runsPerTest.
279	>	// A single test case run should never take more than 1 second.
280	>	// But let's cap it at the high end too ...
281	>	final int timeoutMinutes =
282	>	Math.min(15, Math.max(runsPerTest / 60, 1));
283	>	for (TestCase lastTestCase = currentTestCase;;) {
284	>	try { MINUTES.sleep(timeoutMinutes); }
285	>	catch (InterruptedException unexpected) { break; }
286	>	if (lastTestCase == currentTestCase) {
287	>	System.err.printf(
288	>	"Looks like we're stuck running test: %s%n",
289	>	lastTestCase);
290	>	//                     System.err.printf(
291	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
292	>	//                         lastTestCase, currentRun, runsPerTest);
293	>	//                     System.err.println("availableProcessors=" +
294	>	//                         Runtime.getRuntime().availableProcessors());
295	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
296	>	dumpTestThreads();
297	>	// one stack dump is probably enough; more would be spam
298	>	break;
299	>	}
300	>	lastTestCase = currentTestCase;
301	>	}}};
302	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
303	>	thread.setDaemon(true);
304	>	thread.start();
305	>	}
306	>
307	>	//     public static String cpuModel() {
308	>	//         try {
309	>	//             java.util.regex.Matcher matcher
310	>	//               = Pattern.compile("model name\\s*: (.*)")
311	>	//                 .matcher(new String(
312	>	//                     java.nio.file.Files.readAllBytes(
313	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
314	>	//             matcher.find();
315	>	//             return matcher.group(1);
316	>	//         } catch (Exception ex) { return null; }
317	>	//     }
318	>
319	>	public void runBare() throws Throwable {
320	>	currentTestCase = this;
321	>	if (methodFilter == null
322	>	|| methodFilter.matcher(toString()).find())
323	>	super.runBare();
324	>	}
325	>
326	>	protected void runTest() throws Throwable {
327	>	for (int i = 0; i < runsPerTest; i++) {
328	>	// currentRun = i;
329	>	if (profileTests)
330	>	runTestProfiled();
331	>	else
332	>	super.runTest();
333	>	}
334	>	}
335	>
336	>	protected void runTestProfiled() throws Throwable {
337	>	for (int i = 0; i < 2; i++) {
338	>	long startTime = System.nanoTime();
339	>	super.runTest();
340	>	long elapsedMillis = millisElapsedSince(startTime);
341	>	if (elapsedMillis < profileThreshold)
342	>	break;
343	>	// Never report first run of any test; treat it as a
344	>	// warmup run, notably to trigger all needed classloading,
345	>	if (i > 0)
346	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
347	>	}
348	>	}
349	>
350	>	/**
351	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
352	>	*/
353	>	public static void main(String[] args) {
354	>	main(suite(), args);
355	>	}
356	>
357	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
358	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
359	>	long runTime;
360	>	public void startTest(Test test) {}
361	>	protected void printHeader(long runTime) {
362	>	this.runTime = runTime; // defer printing for later
363	>	}
364	>	protected void printFooter(TestResult result) {
365	>	if (result.wasSuccessful()) {
366	>	getWriter().println("OK (" + result.runCount() + " tests)"
367	>	+ "  Time: " + elapsedTimeAsString(runTime));
368	>	} else {
369	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
370	>	super.printFooter(result);
371	>	}
372	>	}
373	>	}
374	>
375	>	/**
376	>	* Returns a TestRunner that doesn't bother with unnecessary
377	>	* fluff, like printing a "." for each test case.
378	>	*/
379	>	static junit.textui.TestRunner newPithyTestRunner() {
380	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
381	>	runner.setPrinter(new PithyResultPrinter(System.out));
382	>	return runner;
383	>	}
384	>
385	>	/**
386	>	* Runs all unit tests in the given test suite.
387	>	* Actual behavior influenced by jsr166.* system properties.
388	>	*/
389	>	static void main(Test suite, String[] args) {
390	>	if (useSecurityManager) {
391	>	System.err.println("Setting a permissive security manager");
392	>	Policy.setPolicy(permissivePolicy());
393	>	System.setSecurityManager(new SecurityManager());
394	>	}
395	>	for (int i = 0; i < suiteRuns; i++) {
396	>	TestResult result = newPithyTestRunner().doRun(suite);
397	>	if (!result.wasSuccessful())
398	>	System.exit(1);
399	>	System.gc();
400	>	System.runFinalization();
401	>	}
402	>	}
403	>
404	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
405	>	TestSuite suite = new TestSuite();
406	>	for (Object suiteOrClass : suiteOrClasses) {
407	>	if (suiteOrClass instanceof TestSuite)
408	>	suite.addTest((TestSuite) suiteOrClass);
409	>	else if (suiteOrClass instanceof Class)
410	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
411	>	else
412	>	throw new ClassCastException("not a test suite or class");
413	>	}
414		return suite;
415		}
416
417	+	public static void addNamedTestClasses(TestSuite suite,
418	+	String... testClassNames) {
419	+	for (String testClassName : testClassNames) {
420	+	try {
421	+	Class<?> testClass = Class.forName(testClassName);
422	+	Method m = testClass.getDeclaredMethod("suite",
423	+	new Class<?>[0]);
424	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
425	+	} catch (Exception e) {
426	+	throw new Error("Missing test class", e);
427	+	}
428	+	}
429	+	}
430	+
431	+	public static final double JAVA_CLASS_VERSION;
432	+	public static final String JAVA_SPECIFICATION_VERSION;
433	+	static {
434	+	try {
435	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
436	+	new java.security.PrivilegedAction<Double>() {
437	+	public Double run() {
438	+	return Double.valueOf(System.getProperty("java.class.version"));}});
439	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
440	+	new java.security.PrivilegedAction<String>() {
441	+	public String run() {
442	+	return System.getProperty("java.specification.version");}});
443	+	} catch (Throwable t) {
444	+	throw new Error(t);
445	+	}
446	+	}
447	+
448	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
449	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
450	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
451	+	public static boolean atLeastJava9() {
452	+	return JAVA_CLASS_VERSION >= 53.0
453	+	// As of 2015-09, java9 still uses 52.0 class file version
454	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
455	+	}
456	+	public static boolean atLeastJava10() {
457	+	return JAVA_CLASS_VERSION >= 54.0
458	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
459	+	}
460	+
461	+	/**
462	+	* Collects all JSR166 unit tests as one suite.
463	+	*/
464	+	public static Test suite() {
465	+	// Java7+ test classes
466	+	TestSuite suite = newTestSuite(
467	+	ForkJoinPoolTest.suite(),
468	+	ForkJoinTaskTest.suite(),
469	+	RecursiveActionTest.suite(),
470	+	RecursiveTaskTest.suite(),
471	+	LinkedTransferQueueTest.suite(),
472	+	PhaserTest.suite(),
473	+	ThreadLocalRandomTest.suite(),
474	+	AbstractExecutorServiceTest.suite(),
475	+	AbstractQueueTest.suite(),
476	+	AbstractQueuedSynchronizerTest.suite(),
477	+	AbstractQueuedLongSynchronizerTest.suite(),
478	+	ArrayBlockingQueueTest.suite(),
479	+	ArrayDequeTest.suite(),
480	+	ArrayListTest.suite(),
481	+	AtomicBooleanTest.suite(),
482	+	AtomicIntegerArrayTest.suite(),
483	+	AtomicIntegerFieldUpdaterTest.suite(),
484	+	AtomicIntegerTest.suite(),
485	+	AtomicLongArrayTest.suite(),
486	+	AtomicLongFieldUpdaterTest.suite(),
487	+	AtomicLongTest.suite(),
488	+	AtomicMarkableReferenceTest.suite(),
489	+	AtomicReferenceArrayTest.suite(),
490	+	AtomicReferenceFieldUpdaterTest.suite(),
491	+	AtomicReferenceTest.suite(),
492	+	AtomicStampedReferenceTest.suite(),
493	+	ConcurrentHashMapTest.suite(),
494	+	ConcurrentLinkedDequeTest.suite(),
495	+	ConcurrentLinkedQueueTest.suite(),
496	+	ConcurrentSkipListMapTest.suite(),
497	+	ConcurrentSkipListSubMapTest.suite(),
498	+	ConcurrentSkipListSetTest.suite(),
499	+	ConcurrentSkipListSubSetTest.suite(),
500	+	CopyOnWriteArrayListTest.suite(),
501	+	CopyOnWriteArraySetTest.suite(),
502	+	CountDownLatchTest.suite(),
503	+	CountedCompleterTest.suite(),
504	+	CyclicBarrierTest.suite(),
505	+	DelayQueueTest.suite(),
506	+	EntryTest.suite(),
507	+	ExchangerTest.suite(),
508	+	ExecutorsTest.suite(),
509	+	ExecutorCompletionServiceTest.suite(),
510	+	FutureTaskTest.suite(),
511	+	LinkedBlockingDequeTest.suite(),
512	+	LinkedBlockingQueueTest.suite(),
513	+	LinkedListTest.suite(),
514	+	LockSupportTest.suite(),
515	+	PriorityBlockingQueueTest.suite(),
516	+	PriorityQueueTest.suite(),
517	+	ReentrantLockTest.suite(),
518	+	ReentrantReadWriteLockTest.suite(),
519	+	ScheduledExecutorTest.suite(),
520	+	ScheduledExecutorSubclassTest.suite(),
521	+	SemaphoreTest.suite(),
522	+	SynchronousQueueTest.suite(),
523	+	SystemTest.suite(),
524	+	ThreadLocalTest.suite(),
525	+	ThreadPoolExecutorTest.suite(),
526	+	ThreadPoolExecutorSubclassTest.suite(),
527	+	ThreadTest.suite(),
528	+	TimeUnitTest.suite(),
529	+	TreeMapTest.suite(),
530	+	TreeSetTest.suite(),
531	+	TreeSubMapTest.suite(),
532	+	TreeSubSetTest.suite(),
533	+	VectorTest.suite());
534	+
535	+	// Java8+ test classes
536	+	if (atLeastJava8()) {
537	+	String[] java8TestClassNames = {
538	+	"ArrayDeque8Test",
539	+	"Atomic8Test",
540	+	"CompletableFutureTest",
541	+	"ConcurrentHashMap8Test",
542	+	"CountedCompleter8Test",
543	+	"DoubleAccumulatorTest",
544	+	"DoubleAdderTest",
545	+	"ForkJoinPool8Test",
546	+	"ForkJoinTask8Test",
547	+	"LinkedBlockingDeque8Test",
548	+	"LinkedBlockingQueue8Test",
549	+	"LongAccumulatorTest",
550	+	"LongAdderTest",
551	+	"SplittableRandomTest",
552	+	"StampedLockTest",
553	+	"SubmissionPublisherTest",
554	+	"ThreadLocalRandom8Test",
555	+	"TimeUnit8Test",
556	+	};
557	+	addNamedTestClasses(suite, java8TestClassNames);
558	+	}
559	+
560	+	// Java9+ test classes
561	+	if (atLeastJava9()) {
562	+	String[] java9TestClassNames = {
563	+	"AtomicBoolean9Test",
564	+	"AtomicInteger9Test",
565	+	"AtomicIntegerArray9Test",
566	+	"AtomicLong9Test",
567	+	"AtomicLongArray9Test",
568	+	"AtomicReference9Test",
569	+	"AtomicReferenceArray9Test",
570	+	"ExecutorCompletionService9Test",
571	+	"ForkJoinPool9Test",
572	+	};
573	+	addNamedTestClasses(suite, java9TestClassNames);
574	+	}
575	+
576	+	return suite;
577	+	}
578	+
579	+	/** Returns list of junit-style test method names in given class. */
580	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
581	+	Method[] methods = testClass.getDeclaredMethods();
582	+	ArrayList<String> names = new ArrayList<>(methods.length);
583	+	for (Method method : methods) {
584	+	if (method.getName().startsWith("test")
585	+	&& Modifier.isPublic(method.getModifiers())
586	+	// method.getParameterCount() requires jdk8+
587	+	&& method.getParameterTypes().length == 0) {
588	+	names.add(method.getName());
589	+	}
590	+	}
591	+	return names;
592	+	}
593	+
594	+	/**
595	+	* Returns junit-style testSuite for the given test class, but
596	+	* parameterized by passing extra data to each test.
597	+	*/
598	+	public static <ExtraData> Test parameterizedTestSuite
599	+	(Class<? extends JSR166TestCase> testClass,
600	+	Class<ExtraData> dataClass,
601	+	ExtraData data) {
602	+	try {
603	+	TestSuite suite = new TestSuite();
604	+	Constructor c =
605	+	testClass.getDeclaredConstructor(dataClass, String.class);
606	+	for (String methodName : testMethodNames(testClass))
607	+	suite.addTest((Test) c.newInstance(data, methodName));
608	+	return suite;
609	+	} catch (Exception e) {
610	+	throw new Error(e);
611	+	}
612	+	}
613	+
614	+	/**
615	+	* Returns junit-style testSuite for the jdk8 extension of the
616	+	* given test class, but parameterized by passing extra data to
617	+	* each test.  Uses reflection to allow compilation in jdk7.
618	+	*/
619	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
620	+	(Class<? extends JSR166TestCase> testClass,
621	+	Class<ExtraData> dataClass,
622	+	ExtraData data) {
623	+	if (atLeastJava8()) {
624	+	String name = testClass.getName();
625	+	String name8 = name.replaceAll("Test$", "8Test");
626	+	if (name.equals(name8)) throw new Error(name);
627	+	try {
628	+	return (Test)
629	+	Class.forName(name8)
630	+	.getMethod("testSuite", new Class[] { dataClass })
631	+	.invoke(null, data);
632	+	} catch (Exception e) {
633	+	throw new Error(e);
634	+	}
635	+	} else {
636	+	return new TestSuite();
637	+	}
638	+	}
639	+
640	+	// Delays for timing-dependent tests, in milliseconds.
641
642		public static long SHORT_DELAY_MS;
643		public static long SMALL_DELAY_MS;
644		public static long MEDIUM_DELAY_MS;
645		public static long LONG_DELAY_MS;
646
647	+	private static final long RANDOM_TIMEOUT;
648	+	private static final long RANDOM_EXPIRED_TIMEOUT;
649	+	private static final TimeUnit RANDOM_TIMEUNIT;
650	+	static {
651	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
652	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
653	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
654	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
655	+	TimeUnit[] timeUnits = TimeUnit.values();
656	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
657	+	}
658	+
659	+	/**
660	+	* Returns a timeout for use when any value at all will do.
661	+	*/
662	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
663	+
664	+	/**
665	+	* Returns a timeout that means "no waiting", i.e. not positive.
666	+	*/
667	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
668	+
669	+	/**
670	+	* Returns a random non-null TimeUnit.
671	+	*/
672	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
673
674		/**
675	<	* Return the shortest timed delay. This could
676	<	* be reimplmented to use for example a Property.
677	<	*/
675	>	* Returns the shortest timed delay. This can be scaled up for
676	>	* slow machines using the jsr166.delay.factor system property,
677	>	* or via jtreg's -timeoutFactor: flag.
678	>	* http://openjdk.java.net/jtreg/command-help.html
679	>	*/
680		protected long getShortDelay() {
681	<	return 100;
681	>	return (long) (50 * delayFactor);
682		}
683
160	–
684		/**
685	<	* Set delays as multiples of SHORT_DELAY.
685	>	* Sets delays as multiples of SHORT_DELAY.
686		*/
687	<	protected  void setDelays() {
687	>	protected void setDelays() {
688		SHORT_DELAY_MS = getShortDelay();
689	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
689	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
690		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
691	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
691	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
692	>	}
693	>
694	>	private static final long TIMEOUT_DELAY_MS
695	>	= (long) (12.0 * Math.cbrt(delayFactor));
696	>
697	>	/**
698	>	* Returns a timeout in milliseconds to be used in tests that verify
699	>	* that operations block or time out.  We want this to be longer
700	>	* than the OS scheduling quantum, but not too long, so don't scale
701	>	* linearly with delayFactor; we use "crazy" cube root instead.
702	>	*/
703	>	static long timeoutMillis() {
704	>	return TIMEOUT_DELAY_MS;
705		}
706
707		/**
708	<	* Flag set true if any threadAssert methods fail
708	>	* Returns a new Date instance representing a time at least
709	>	* delayMillis milliseconds in the future.
710		*/
711	<	volatile boolean threadFailed;
711	>	Date delayedDate(long delayMillis) {
712	>	// Add 1 because currentTimeMillis is known to round into the past.
713	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
714	>	}
715
716		/**
717	<	* Initialize test to indicate that no thread assertions have failed
717	>	* The first exception encountered if any threadAssertXXX method fails.
718		*/
719	<	public void setUp() {
719	>	private final AtomicReference<Throwable> threadFailure
720	>	= new AtomicReference<>(null);
721	>
722	>	/**
723	>	* Records an exception so that it can be rethrown later in the test
724	>	* harness thread, triggering a test case failure.  Only the first
725	>	* failure is recorded; subsequent calls to this method from within
726	>	* the same test have no effect.
727	>	*/
728	>	public void threadRecordFailure(Throwable t) {
729	>	System.err.println(t);
730	>	dumpTestThreads();
731	>	threadFailure.compareAndSet(null, t);
732	>	}
733	>
734	>	public void setUp() {
735		setDelays();
736	<	threadFailed = false;
736	>	}
737	>
738	>	void tearDownFail(String format, Object... args) {
739	>	String msg = toString() + ": " + String.format(format, args);
740	>	System.err.println(msg);
741	>	dumpTestThreads();
742	>	throw new AssertionFailedError(msg);
743	>	}
744	>
745	>	/**
746	>	* Extra checks that get done for all test cases.
747	>	*
748	>	* Triggers test case failure if any thread assertions have failed,
749	>	* by rethrowing, in the test harness thread, any exception recorded
750	>	* earlier by threadRecordFailure.
751	>	*
752	>	* Triggers test case failure if interrupt status is set in the main thread.
753	>	*/
754	>	public void tearDown() throws Exception {
755	>	Throwable t = threadFailure.getAndSet(null);
756	>	if (t != null) {
757	>	if (t instanceof Error)
758	>	throw (Error) t;
759	>	else if (t instanceof RuntimeException)
760	>	throw (RuntimeException) t;
761	>	else if (t instanceof Exception)
762	>	throw (Exception) t;
763	>	else {
764	>	AssertionFailedError afe =
765	>	new AssertionFailedError(t.toString());
766	>	afe.initCause(t);
767	>	throw afe;
768	>	}
769	>	}
770	>
771	>	if (Thread.interrupted())
772	>	tearDownFail("interrupt status set in main thread");
773	>
774	>	checkForkJoinPoolThreadLeaks();
775		}
776
777		/**
778	<	* Trigger test case failure if any thread assertions have failed
778	>	* Finds missing PoolCleaners
779		*/
780	<	public void tearDown() {
781	<	assertFalse(threadFailed);
780	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
781	>	Thread[] survivors = new Thread[7];
782	>	int count = Thread.enumerate(survivors);
783	>	for (int i = 0; i < count; i++) {
784	>	Thread thread = survivors[i];
785	>	String name = thread.getName();
786	>	if (name.startsWith("ForkJoinPool-")) {
787	>	// give thread some time to terminate
788	>	thread.join(LONG_DELAY_MS);
789	>	if (thread.isAlive())
790	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
791	>	thread);
792	>	}
793	>	}
794	>
795	>	if (!ForkJoinPool.commonPool()
796	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
797	>	tearDownFail("ForkJoin common pool thread stuck");
798		}
799
800		/**
801	<	* Fail, also setting status to indicate current testcase should fail
802	<	*/
801	>	* Just like fail(reason), but additionally recording (using
802	>	* threadRecordFailure) any AssertionFailedError thrown, so that
803	>	* the current testcase will fail.
804	>	*/
805		public void threadFail(String reason) {
806	<	threadFailed = true;
807	<	fail(reason);
806	>	try {
807	>	fail(reason);
808	>	} catch (AssertionFailedError t) {
809	>	threadRecordFailure(t);
810	>	throw t;
811	>	}
812		}
813
814		/**
815	<	* If expression not true, set status to indicate current testcase
816	<	* should fail
817	<	*/
815	>	* Just like assertTrue(b), but additionally recording (using
816	>	* threadRecordFailure) any AssertionFailedError thrown, so that
817	>	* the current testcase will fail.
818	>	*/
819		public void threadAssertTrue(boolean b) {
820	<	if (!b) {
205	<	threadFailed = true;
820	>	try {
821		assertTrue(b);
822	+	} catch (AssertionFailedError t) {
823	+	threadRecordFailure(t);
824	+	throw t;
825		}
826		}
827
828		/**
829	<	* If expression not false, set status to indicate current testcase
830	<	* should fail
831	<	*/
829	>	* Just like assertFalse(b), but additionally recording (using
830	>	* threadRecordFailure) any AssertionFailedError thrown, so that
831	>	* the current testcase will fail.
832	>	*/
833		public void threadAssertFalse(boolean b) {
834	<	if (b) {
216	<	threadFailed = true;
834	>	try {
835		assertFalse(b);
836	+	} catch (AssertionFailedError t) {
837	+	threadRecordFailure(t);
838	+	throw t;
839		}
840		}
841
842		/**
843	<	* If argument not null, set status to indicate current testcase
844	<	* should fail
845	<	*/
843	>	* Just like assertNull(x), but additionally recording (using
844	>	* threadRecordFailure) any AssertionFailedError thrown, so that
845	>	* the current testcase will fail.
846	>	*/
847		public void threadAssertNull(Object x) {
848	<	if (x != null) {
227	<	threadFailed = true;
848	>	try {
849		assertNull(x);
850	+	} catch (AssertionFailedError t) {
851	+	threadRecordFailure(t);
852	+	throw t;
853		}
854		}
855
856		/**
857	<	* If arguments not equal, set status to indicate current testcase
858	<	* should fail
859	<	*/
857	>	* Just like assertEquals(x, y), but additionally recording (using
858	>	* threadRecordFailure) any AssertionFailedError thrown, so that
859	>	* the current testcase will fail.
860	>	*/
861		public void threadAssertEquals(long x, long y) {
862	<	if (x != y) {
238	<	threadFailed = true;
862	>	try {
863		assertEquals(x, y);
864	+	} catch (AssertionFailedError t) {
865	+	threadRecordFailure(t);
866	+	throw t;
867		}
868		}
869
870		/**
871	<	* If arguments not equal, set status to indicate current testcase
872	<	* should fail
873	<	*/
871	>	* Just like assertEquals(x, y), but additionally recording (using
872	>	* threadRecordFailure) any AssertionFailedError thrown, so that
873	>	* the current testcase will fail.
874	>	*/
875		public void threadAssertEquals(Object x, Object y) {
876	<	if (x != y && (x == null || !x.equals(y))) {
249	<	threadFailed = true;
876	>	try {
877		assertEquals(x, y);
878	+	} catch (AssertionFailedError fail) {
879	+	threadRecordFailure(fail);
880	+	throw fail;
881	+	} catch (Throwable fail) {
882	+	threadUnexpectedException(fail);
883	+	}
884	+	}
885	+
886	+	/**
887	+	* Just like assertSame(x, y), but additionally recording (using
888	+	* threadRecordFailure) any AssertionFailedError thrown, so that
889	+	* the current testcase will fail.
890	+	*/
891	+	public void threadAssertSame(Object x, Object y) {
892	+	try {
893	+	assertSame(x, y);
894	+	} catch (AssertionFailedError fail) {
895	+	threadRecordFailure(fail);
896	+	throw fail;
897		}
898		}
899
900		/**
901	<	* threadFail with message "should throw exception"
902	<	*/
901	>	* Calls threadFail with message "should throw exception".
902	>	*/
903		public void threadShouldThrow() {
904	<	threadFailed = true;
905	<	fail("should throw exception");
904	>	threadFail("should throw exception");
905	>	}
906	>
907	>	/**
908	>	* Calls threadFail with message "should throw" + exceptionName.
909	>	*/
910	>	public void threadShouldThrow(String exceptionName) {
911	>	threadFail("should throw " + exceptionName);
912	>	}
913	>
914	>	/**
915	>	* Records the given exception using {@link #threadRecordFailure},
916	>	* then rethrows the exception, wrapping it in an
917	>	* AssertionFailedError if necessary.
918	>	*/
919	>	public void threadUnexpectedException(Throwable t) {
920	>	threadRecordFailure(t);
921	>	t.printStackTrace();
922	>	if (t instanceof RuntimeException)
923	>	throw (RuntimeException) t;
924	>	else if (t instanceof Error)
925	>	throw (Error) t;
926	>	else {
927	>	AssertionFailedError afe =
928	>	new AssertionFailedError("unexpected exception: " + t);
929	>	afe.initCause(t);
930	>	throw afe;
931	>	}
932	>	}
933	>
934	>	/**
935	>	* Delays, via Thread.sleep, for the given millisecond delay, but
936	>	* if the sleep is shorter than specified, may re-sleep or yield
937	>	* until time elapses.  Ensures that the given time, as measured
938	>	* by System.nanoTime(), has elapsed.
939	>	*/
940	>	static void delay(long millis) throws InterruptedException {
941	>	long nanos = millis * (1000 * 1000);
942	>	final long wakeupTime = System.nanoTime() + nanos;
943	>	do {
944	>	if (millis > 0L)
945	>	Thread.sleep(millis);
946	>	else // too short to sleep
947	>	Thread.yield();
948	>	nanos = wakeupTime - System.nanoTime();
949	>	millis = nanos / (1000 * 1000);
950	>	} while (nanos >= 0L);
951	>	}
952	>
953	>	/**
954	>	* Allows use of try-with-resources with per-test thread pools.
955	>	*/
956	>	class PoolCleaner implements AutoCloseable {
957	>	private final ExecutorService pool;
958	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
959	>	public void close() { joinPool(pool); }
960	>	}
961	>
962	>	/**
963	>	* An extension of PoolCleaner that has an action to release the pool.
964	>	*/
965	>	class PoolCleanerWithReleaser extends PoolCleaner {
966	>	private final Runnable releaser;
967	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
968	>	super(pool);
969	>	this.releaser = releaser;
970	>	}
971	>	public void close() {
972	>	try {
973	>	releaser.run();
974	>	} finally {
975	>	super.close();
976	>	}
977	>	}
978	>	}
979	>
980	>	PoolCleaner cleaner(ExecutorService pool) {
981	>	return new PoolCleaner(pool);
982	>	}
983	>
984	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
985	>	return new PoolCleanerWithReleaser(pool, releaser);
986	>	}
987	>
988	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
989	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
990	>	}
991	>
992	>	Runnable releaser(final CountDownLatch latch) {
993	>	return new Runnable() { public void run() {
994	>	do { latch.countDown(); }
995	>	while (latch.getCount() > 0);
996	>	}};
997	>	}
998	>
999	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1000	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
1001	>	}
1002	>
1003	>	Runnable releaser(final AtomicBoolean flag) {
1004	>	return new Runnable() { public void run() { flag.set(true); }};
1005	>	}
1006	>
1007	>	/**
1008	>	* Waits out termination of a thread pool or fails doing so.
1009	>	*/
1010	>	void joinPool(ExecutorService pool) {
1011	>	try {
1012	>	pool.shutdown();
1013	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1014	>	try {
1015	>	threadFail("ExecutorService " + pool +
1016	>	" did not terminate in a timely manner");
1017	>	} finally {
1018	>	// last resort, for the benefit of subsequent tests
1019	>	pool.shutdownNow();
1020	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1021	>	}
1022	>	}
1023	>	} catch (SecurityException ok) {
1024	>	// Allowed in case test doesn't have privs
1025	>	} catch (InterruptedException fail) {
1026	>	threadFail("Unexpected InterruptedException");
1027	>	}
1028	>	}
1029	>
1030	>	/**
1031	>	* Like Runnable, but with the freedom to throw anything.
1032	>	* junit folks had the same idea:
1033	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1034	>	*/
1035	>	interface Action { public void run() throws Throwable; }
1036	>
1037	>	/**
1038	>	* Runs all the given actions in parallel, failing if any fail.
1039	>	* Useful for running multiple variants of tests that are
1040	>	* necessarily individually slow because they must block.
1041	>	*/
1042	>	void testInParallel(Action ... actions) {
1043	>	ExecutorService pool = Executors.newCachedThreadPool();
1044	>	try (PoolCleaner cleaner = cleaner(pool)) {
1045	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1046	>	for (final Action action : actions)
1047	>	futures.add(pool.submit(new CheckedRunnable() {
1048	>	public void realRun() throws Throwable { action.run();}}));
1049	>	for (Future<?> future : futures)
1050	>	try {
1051	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1052	>	} catch (ExecutionException ex) {
1053	>	threadUnexpectedException(ex.getCause());
1054	>	} catch (Exception ex) {
1055	>	threadUnexpectedException(ex);
1056	>	}
1057	>	}
1058	>	}
1059	>
1060	>	/**
1061	>	* A debugging tool to print stack traces of most threads, as jstack does.
1062	>	* Uninteresting threads are filtered out.
1063	>	*/
1064	>	static void dumpTestThreads() {
1065	>	SecurityManager sm = System.getSecurityManager();
1066	>	if (sm != null) {
1067	>	try {
1068	>	System.setSecurityManager(null);
1069	>	} catch (SecurityException giveUp) {
1070	>	return;
1071	>	}
1072	>	}
1073	>
1074	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1075	>	System.err.println("------ stacktrace dump start ------");
1076	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1077	>	final String name = info.getThreadName();
1078	>	String lockName;
1079	>	if ("Signal Dispatcher".equals(name))
1080	>	continue;
1081	>	if ("Reference Handler".equals(name)
1082	>	&& (lockName = info.getLockName()) != null
1083	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1084	>	continue;
1085	>	if ("Finalizer".equals(name)
1086	>	&& (lockName = info.getLockName()) != null
1087	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1088	>	continue;
1089	>	if ("checkForWedgedTest".equals(name))
1090	>	continue;
1091	>	System.err.print(info);
1092	>	}
1093	>	System.err.println("------ stacktrace dump end ------");
1094	>
1095	>	if (sm != null) System.setSecurityManager(sm);
1096	>	}
1097	>
1098	>	/**
1099	>	* Checks that thread eventually enters the expected blocked thread state.
1100	>	*/
1101	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1102	>	// always sleep at least 1 ms, with high probability avoiding
1103	>	// transitory states
1104	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1105	>	try { delay(1); }
1106	>	catch (InterruptedException fail) {
1107	>	fail("Unexpected InterruptedException");
1108	>	}
1109	>	Thread.State s = thread.getState();
1110	>	if (s == expected)
1111	>	return;
1112	>	else if (s == Thread.State.TERMINATED)
1113	>	fail("Unexpected thread termination");
1114	>	}
1115	>	fail("timed out waiting for thread to enter thread state " + expected);
1116		}
1117
1118		/**
1119	<	* threadFail with message "Unexpected exception"
1119	>	* Checks that thread does not terminate within the default
1120	>	* millisecond delay of {@code timeoutMillis()}.
1121	>	* TODO: REMOVEME
1122		*/
1123	<	public void threadUnexpectedException() {
1124	<	threadFailed = true;
1125	<	fail("Unexpected exception");
1123	>	void assertThreadStaysAlive(Thread thread) {
1124	>	assertThreadStaysAlive(thread, timeoutMillis());
1125	>	}
1126	>
1127	>	/**
1128	>	* Checks that thread does not terminate within the given millisecond delay.
1129	>	* TODO: REMOVEME
1130	>	*/
1131	>	void assertThreadStaysAlive(Thread thread, long millis) {
1132	>	try {
1133	>	// No need to optimize the failing case via Thread.join.
1134	>	delay(millis);
1135	>	assertTrue(thread.isAlive());
1136	>	} catch (InterruptedException fail) {
1137	>	threadFail("Unexpected InterruptedException");
1138	>	}
1139		}
1140
1141	+	/**
1142	+	* Checks that the threads do not terminate within the default
1143	+	* millisecond delay of {@code timeoutMillis()}.
1144	+	* TODO: REMOVEME
1145	+	*/
1146	+	void assertThreadsStayAlive(Thread... threads) {
1147	+	assertThreadsStayAlive(timeoutMillis(), threads);
1148	+	}
1149
1150		/**
1151	<	* Wait out termination of a thread pool or fail doing so
1151	>	* Checks that the threads do not terminate within the given millisecond delay.
1152	>	* TODO: REMOVEME
1153		*/
1154	<	public void joinPool(ExecutorService exec) {
1154	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1155		try {
1156	<	exec.shutdown();
1157	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
1158	<	} catch(InterruptedException ie) {
1159	<	fail("Unexpected exception");
1156	>	// No need to optimize the failing case via Thread.join.
1157	>	delay(millis);
1158	>	for (Thread thread : threads)
1159	>	assertTrue(thread.isAlive());
1160	>	} catch (InterruptedException fail) {
1161	>	threadFail("Unexpected InterruptedException");
1162		}
1163		}
1164
1165	+	/**
1166	+	* Checks that future.get times out, with the default timeout of
1167	+	* {@code timeoutMillis()}.
1168	+	*/
1169	+	void assertFutureTimesOut(Future future) {
1170	+	assertFutureTimesOut(future, timeoutMillis());
1171	+	}
1172
1173		/**
1174	<	* fail with message "should throw exception"
1175	<	*/
1174	>	* Checks that future.get times out, with the given millisecond timeout.
1175	>	*/
1176	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1177	>	long startTime = System.nanoTime();
1178	>	try {
1179	>	future.get(timeoutMillis, MILLISECONDS);
1180	>	shouldThrow();
1181	>	} catch (TimeoutException success) {
1182	>	} catch (Exception fail) {
1183	>	threadUnexpectedException(fail);
1184	>	} finally { future.cancel(true); }
1185	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1186	>	}
1187	>
1188	>	/**
1189	>	* Fails with message "should throw exception".
1190	>	*/
1191		public void shouldThrow() {
1192		fail("Should throw exception");
1193		}
1194
1195		/**
1196	<	* fail with message "Unexpected exception"
1196	>	* Fails with message "should throw " + exceptionName.
1197		*/
1198	<	public void unexpectedException() {
1199	<	fail("Unexpected exception");
1198	>	public void shouldThrow(String exceptionName) {
1199	>	fail("Should throw " + exceptionName);
1200		}
1201
1202	+	/**
1203	+	* The maximum number of consecutive spurious wakeups we should
1204	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1205	+	*/
1206	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1207
1208		/**
1209		* The number of elements to place in collections, arrays, etc.
1210		*/
1211	<	static final int SIZE = 20;
1211	>	public static final int SIZE = 20;
1212
1213		// Some convenient Integer constants
1214
1215	<	static final Integer zero = new Integer(0);
1216	<	static final Integer one = new Integer(1);
1217	<	static final Integer two = new Integer(2);
1218	<	static final Integer three  = new Integer(3);
1219	<	static final Integer four  = new Integer(4);
1220	<	static final Integer five  = new Integer(5);
1221	<	static final Integer six = new Integer(6);
1222	<	static final Integer seven = new Integer(7);
1223	<	static final Integer eight = new Integer(8);
1224	<	static final Integer nine = new Integer(9);
1225	<	static final Integer m1  = new Integer(-1);
1226	<	static final Integer m2  = new Integer(-2);
1227	<	static final Integer m3  = new Integer(-3);
1228	<	static final Integer m4 = new Integer(-4);
1229	<	static final Integer m5 = new Integer(-5);
1230	<	static final Integer m10 = new Integer(-10);
1215	>	public static final Integer zero  = new Integer(0);
1216	>	public static final Integer one   = new Integer(1);
1217	>	public static final Integer two   = new Integer(2);
1218	>	public static final Integer three = new Integer(3);
1219	>	public static final Integer four  = new Integer(4);
1220	>	public static final Integer five  = new Integer(5);
1221	>	public static final Integer six   = new Integer(6);
1222	>	public static final Integer seven = new Integer(7);
1223	>	public static final Integer eight = new Integer(8);
1224	>	public static final Integer nine  = new Integer(9);
1225	>	public static final Integer m1  = new Integer(-1);
1226	>	public static final Integer m2  = new Integer(-2);
1227	>	public static final Integer m3  = new Integer(-3);
1228	>	public static final Integer m4  = new Integer(-4);
1229	>	public static final Integer m5  = new Integer(-5);
1230	>	public static final Integer m6  = new Integer(-6);
1231	>	public static final Integer m10 = new Integer(-10);
1232	>
1233	>	/**
1234	>	* Runs Runnable r with a security policy that permits precisely
1235	>	* the specified permissions.  If there is no current security
1236	>	* manager, the runnable is run twice, both with and without a
1237	>	* security manager.  We require that any security manager permit
1238	>	* getPolicy/setPolicy.
1239	>	*/
1240	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1241	>	SecurityManager sm = System.getSecurityManager();
1242	>	if (sm == null) {
1243	>	r.run();
1244	>	}
1245	>	runWithSecurityManagerWithPermissions(r, permissions);
1246	>	}
1247
1248	+	/**
1249	+	* Runs Runnable r with a security policy that permits precisely
1250	+	* the specified permissions.  If there is no current security
1251	+	* manager, a temporary one is set for the duration of the
1252	+	* Runnable.  We require that any security manager permit
1253	+	* getPolicy/setPolicy.
1254	+	*/
1255	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1256	+	Permission... permissions) {
1257	+	SecurityManager sm = System.getSecurityManager();
1258	+	if (sm == null) {
1259	+	Policy savedPolicy = Policy.getPolicy();
1260	+	try {
1261	+	Policy.setPolicy(permissivePolicy());
1262	+	System.setSecurityManager(new SecurityManager());
1263	+	runWithSecurityManagerWithPermissions(r, permissions);
1264	+	} finally {
1265	+	System.setSecurityManager(null);
1266	+	Policy.setPolicy(savedPolicy);
1267	+	}
1268	+	} else {
1269	+	Policy savedPolicy = Policy.getPolicy();
1270	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1271	+	Policy.setPolicy(policy);
1272
1273	<	// Some convenient Runnable classes
1273	>	try {
1274	>	r.run();
1275	>	} finally {
1276	>	policy.addPermission(new SecurityPermission("setPolicy"));
1277	>	Policy.setPolicy(savedPolicy);
1278	>	}
1279	>	}
1280	>	}
1281
1282	<	static class NoOpRunnable implements Runnable {
1283	<	public void run() {}
1282	>	/**
1283	>	* Runs a runnable without any permissions.
1284	>	*/
1285	>	public void runWithoutPermissions(Runnable r) {
1286	>	runWithPermissions(r);
1287		}
1288
1289	<	static class NoOpCallable implements Callable {
1290	<	public Object call() { return Boolean.TRUE; }
1289	>	/**
1290	>	* A security policy where new permissions can be dynamically added
1291	>	* or all cleared.
1292	>	*/
1293	>	public static class AdjustablePolicy extends java.security.Policy {
1294	>	Permissions perms = new Permissions();
1295	>	AdjustablePolicy(Permission... permissions) {
1296	>	for (Permission permission : permissions)
1297	>	perms.add(permission);
1298	>	}
1299	>	void addPermission(Permission perm) { perms.add(perm); }
1300	>	void clearPermissions() { perms = new Permissions(); }
1301	>	public PermissionCollection getPermissions(CodeSource cs) {
1302	>	return perms;
1303	>	}
1304	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1305	>	return perms;
1306	>	}
1307	>	public boolean implies(ProtectionDomain pd, Permission p) {
1308	>	return perms.implies(p);
1309	>	}
1310	>	public void refresh() {}
1311	>	public String toString() {
1312	>	List<Permission> ps = new ArrayList<>();
1313	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1314	>	ps.add(e.nextElement());
1315	>	return "AdjustablePolicy with permissions " + ps;
1316	>	}
1317		}
1318
1319	<	class ShortRunnable implements Runnable {
1320	<	public void run() {
1321	<	try {
1322	<	Thread.sleep(SHORT_DELAY_MS);
1323	<	}
1324	<	catch(Exception e) {
1325	<	threadUnexpectedException();
1319	>	/**
1320	>	* Returns a policy containing all the permissions we ever need.
1321	>	*/
1322	>	public static Policy permissivePolicy() {
1323	>	return new AdjustablePolicy
1324	>	// Permissions j.u.c. needs directly
1325	>	(new RuntimePermission("modifyThread"),
1326	>	new RuntimePermission("getClassLoader"),
1327	>	new RuntimePermission("setContextClassLoader"),
1328	>	// Permissions needed to change permissions!
1329	>	new SecurityPermission("getPolicy"),
1330	>	new SecurityPermission("setPolicy"),
1331	>	new RuntimePermission("setSecurityManager"),
1332	>	// Permissions needed by the junit test harness
1333	>	new RuntimePermission("accessDeclaredMembers"),
1334	>	new PropertyPermission("*", "read"),
1335	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1336	>	}
1337	>
1338	>	/**
1339	>	* Sleeps until the given time has elapsed.
1340	>	* Throws AssertionFailedError if interrupted.
1341	>	*/
1342	>	static void sleep(long millis) {
1343	>	try {
1344	>	delay(millis);
1345	>	} catch (InterruptedException fail) {
1346	>	AssertionFailedError afe =
1347	>	new AssertionFailedError("Unexpected InterruptedException");
1348	>	afe.initCause(fail);
1349	>	throw afe;
1350	>	}
1351	>	}
1352	>
1353	>	/**
1354	>	* Spin-waits up to the specified number of milliseconds for the given
1355	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1356	>	*/
1357	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1358	>	long startTime = 0L;
1359	>	for (;;) {
1360	>	Thread.State s = thread.getState();
1361	>	if (s == Thread.State.BLOCKED ||
1362	>	s == Thread.State.WAITING ||
1363	>	s == Thread.State.TIMED_WAITING)
1364	>	return;
1365	>	else if (s == Thread.State.TERMINATED)
1366	>	fail("Unexpected thread termination");
1367	>	else if (startTime == 0L)
1368	>	startTime = System.nanoTime();
1369	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1370	>	threadAssertTrue(thread.isAlive());
1371	>	fail("timed out waiting for thread to enter wait state");
1372		}
1373	+	Thread.yield();
1374		}
1375		}
1376
1377	<	class ShortInterruptedRunnable implements Runnable {
1378	<	public void run() {
1379	<	try {
1380	<	Thread.sleep(SHORT_DELAY_MS);
1381	<	threadShouldThrow();
1377	>	/**
1378	>	* Spin-waits up to the specified number of milliseconds for the given
1379	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1380	>	* and additionally satisfy the given condition.
1381	>	*/
1382	>	void waitForThreadToEnterWaitState(
1383	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1384	>	long startTime = 0L;
1385	>	for (;;) {
1386	>	Thread.State s = thread.getState();
1387	>	if (s == Thread.State.BLOCKED ||
1388	>	s == Thread.State.WAITING ||
1389	>	s == Thread.State.TIMED_WAITING) {
1390	>	try {
1391	>	if (waitingForGodot.call())
1392	>	return;
1393	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1394	>	}
1395	>	else if (s == Thread.State.TERMINATED)
1396	>	fail("Unexpected thread termination");
1397	>	else if (startTime == 0L)
1398	>	startTime = System.nanoTime();
1399	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1400	>	threadAssertTrue(thread.isAlive());
1401	>	fail("timed out waiting for thread to enter wait state");
1402		}
1403	<	catch(InterruptedException success) {
1403	>	Thread.yield();
1404	>	}
1405	>	}
1406	>
1407	>	/**
1408	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1409	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1410	>	*/
1411	>	void waitForThreadToEnterWaitState(Thread thread) {
1412	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1413	>	}
1414	>
1415	>	/**
1416	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1417	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1418	>	* and additionally satisfy the given condition.
1419	>	*/
1420	>	void waitForThreadToEnterWaitState(
1421	>	Thread thread, Callable<Boolean> waitingForGodot) {
1422	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1423	>	}
1424	>
1425	>	/**
1426	>	* Returns the number of milliseconds since time given by
1427	>	* startNanoTime, which must have been previously returned from a
1428	>	* call to {@link System#nanoTime()}.
1429	>	*/
1430	>	static long millisElapsedSince(long startNanoTime) {
1431	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1432	>	}
1433	>
1434	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1435	>	//         long startTime = System.nanoTime();
1436	>	//         try {
1437	>	//             r.run();
1438	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1439	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1440	>	//             throw new AssertionFailedError("did not return promptly");
1441	>	//     }
1442	>
1443	>	//     void assertTerminatesPromptly(Runnable r) {
1444	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1445	>	//     }
1446	>
1447	>	/**
1448	>	* Checks that timed f.get() returns the expected value, and does not
1449	>	* wait for the timeout to elapse before returning.
1450	>	*/
1451	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1452	>	long startTime = System.nanoTime();
1453	>	try {
1454	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1455	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1456	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1457	>	throw new AssertionFailedError("timed get did not return promptly");
1458	>	}
1459	>
1460	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1461	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1462	>	}
1463	>
1464	>	/**
1465	>	* Returns a new started daemon Thread running the given runnable.
1466	>	*/
1467	>	Thread newStartedThread(Runnable runnable) {
1468	>	Thread t = new Thread(runnable);
1469	>	t.setDaemon(true);
1470	>	t.start();
1471	>	return t;
1472	>	}
1473	>
1474	>	/**
1475	>	* Waits for the specified time (in milliseconds) for the thread
1476	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1477	>	* the thread (in the hope that it may terminate later) and fails.
1478	>	*/
1479	>	void awaitTermination(Thread t, long timeoutMillis) {
1480	>	try {
1481	>	t.join(timeoutMillis);
1482	>	} catch (InterruptedException fail) {
1483	>	threadUnexpectedException(fail);
1484	>	} finally {
1485	>	if (t.getState() != Thread.State.TERMINATED) {
1486	>	t.interrupt();
1487	>	threadFail("timed out waiting for thread to terminate");
1488		}
1489		}
1490		}
1491
1492	<	class SmallRunnable implements Runnable {
1493	<	public void run() {
1492	>	/**
1493	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1494	>	* terminate (using {@link Thread#join(long)}), else interrupts
1495	>	* the thread (in the hope that it may terminate later) and fails.
1496	>	*/
1497	>	void awaitTermination(Thread t) {
1498	>	awaitTermination(t, LONG_DELAY_MS);
1499	>	}
1500	>
1501	>	// Some convenient Runnable classes
1502	>
1503	>	public abstract class CheckedRunnable implements Runnable {
1504	>	protected abstract void realRun() throws Throwable;
1505	>
1506	>	public final void run() {
1507		try {
1508	<	Thread.sleep(SMALL_DELAY_MS);
1509	<	}
1510	<	catch(Exception e) {
362	<	threadUnexpectedException();
1508	>	realRun();
1509	>	} catch (Throwable fail) {
1510	>	threadUnexpectedException(fail);
1511		}
1512		}
1513		}
1514
1515	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1516	<	public void run() {
1515	>	public abstract class RunnableShouldThrow implements Runnable {
1516	>	protected abstract void realRun() throws Throwable;
1517	>
1518	>	final Class<?> exceptionClass;
1519	>
1520	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1521	>	this.exceptionClass = exceptionClass;
1522	>	}
1523	>
1524	>	public final void run() {
1525		try {
1526	<	Thread.sleep(SMALL_DELAY_MS);
1527	<	}
1528	<	catch(Exception e) {
1526	>	realRun();
1527	>	threadShouldThrow(exceptionClass.getSimpleName());
1528	>	} catch (Throwable t) {
1529	>	if (! exceptionClass.isInstance(t))
1530	>	threadUnexpectedException(t);
1531		}
1532		}
1533		}
1534
1535	<	class SmallCallable implements Callable {
1536	<	public Object call() {
1535	>	public abstract class ThreadShouldThrow extends Thread {
1536	>	protected abstract void realRun() throws Throwable;
1537	>
1538	>	final Class<?> exceptionClass;
1539	>
1540	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1541	>	this.exceptionClass = exceptionClass;
1542	>	}
1543	>
1544	>	public final void run() {
1545		try {
1546	<	Thread.sleep(SMALL_DELAY_MS);
1546	>	realRun();
1547	>	threadShouldThrow(exceptionClass.getSimpleName());
1548	>	} catch (Throwable t) {
1549	>	if (! exceptionClass.isInstance(t))
1550	>	threadUnexpectedException(t);
1551		}
382	–	catch(Exception e) {
383	–	threadUnexpectedException();
384	–	}
385	–	return Boolean.TRUE;
1552		}
1553		}
1554
1555	<	class SmallInterruptedRunnable implements Runnable {
1556	<	public void run() {
1555	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1556	>	protected abstract void realRun() throws Throwable;
1557	>
1558	>	public final void run() {
1559		try {
1560	<	Thread.sleep(SMALL_DELAY_MS);
1561	<	threadShouldThrow();
1562	<	}
1563	<	catch(InterruptedException success) {
1560	>	realRun();
1561	>	threadShouldThrow("InterruptedException");
1562	>	} catch (InterruptedException success) {
1563	>	threadAssertFalse(Thread.interrupted());
1564	>	} catch (Throwable fail) {
1565	>	threadUnexpectedException(fail);
1566		}
1567		}
1568		}
1569
1570	+	public abstract class CheckedCallable<T> implements Callable<T> {
1571	+	protected abstract T realCall() throws Throwable;
1572
1573	<	class MediumRunnable implements Runnable {
402	<	public void run() {
1573	>	public final T call() {
1574		try {
1575	<	Thread.sleep(MEDIUM_DELAY_MS);
1576	<	}
1577	<	catch(Exception e) {
1578	<	threadUnexpectedException();
1575	>	return realCall();
1576	>	} catch (Throwable fail) {
1577	>	threadUnexpectedException(fail);
1578	>	return null;
1579		}
1580		}
1581		}
1582
1583	<	class MediumInterruptedRunnable implements Runnable {
1584	<	public void run() {
1583	>	public abstract class CheckedInterruptedCallable<T>
1584	>	implements Callable<T> {
1585	>	protected abstract T realCall() throws Throwable;
1586	>
1587	>	public final T call() {
1588		try {
1589	<	Thread.sleep(MEDIUM_DELAY_MS);
1590	<	threadShouldThrow();
1591	<	}
1592	<	catch(InterruptedException success) {
1589	>	T result = realCall();
1590	>	threadShouldThrow("InterruptedException");
1591	>	return result;
1592	>	} catch (InterruptedException success) {
1593	>	threadAssertFalse(Thread.interrupted());
1594	>	} catch (Throwable fail) {
1595	>	threadUnexpectedException(fail);
1596		}
1597	+	return null;
1598		}
1599		}
1600
1601	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1602	<	public void run() {
1601	>	public static class NoOpRunnable implements Runnable {
1602	>	public void run() {}
1603	>	}
1604	>
1605	>	public static class NoOpCallable implements Callable {
1606	>	public Object call() { return Boolean.TRUE; }
1607	>	}
1608	>
1609	>	public static final String TEST_STRING = "a test string";
1610	>
1611	>	public static class StringTask implements Callable<String> {
1612	>	final String value;
1613	>	public StringTask() { this(TEST_STRING); }
1614	>	public StringTask(String value) { this.value = value; }
1615	>	public String call() { return value; }
1616	>	}
1617	>
1618	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1619	>	return new CheckedCallable<String>() {
1620	>	protected String realCall() {
1621	>	try {
1622	>	latch.await();
1623	>	} catch (InterruptedException quittingTime) {}
1624	>	return TEST_STRING;
1625	>	}};
1626	>	}
1627	>
1628	>	public Runnable countDowner(final CountDownLatch latch) {
1629	>	return new CheckedRunnable() {
1630	>	public void realRun() throws InterruptedException {
1631	>	latch.countDown();
1632	>	}};
1633	>	}
1634	>
1635	>	class LatchAwaiter extends CheckedRunnable {
1636	>	static final int NEW = 0;
1637	>	static final int RUNNING = 1;
1638	>	static final int DONE = 2;
1639	>	final CountDownLatch latch;
1640	>	int state = NEW;
1641	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1642	>	public void realRun() throws InterruptedException {
1643	>	state = 1;
1644	>	await(latch);
1645	>	state = 2;
1646	>	}
1647	>	}
1648	>
1649	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1650	>	return new LatchAwaiter(latch);
1651	>	}
1652	>
1653	>	public void await(CountDownLatch latch, long timeoutMillis) {
1654	>	try {
1655	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1656	>	fail("timed out waiting for CountDownLatch for "
1657	>	+ (timeoutMillis/1000) + " sec");
1658	>	} catch (Throwable fail) {
1659	>	threadUnexpectedException(fail);
1660	>	}
1661	>	}
1662	>
1663	>	public void await(CountDownLatch latch) {
1664	>	await(latch, LONG_DELAY_MS);
1665	>	}
1666	>
1667	>	public void await(Semaphore semaphore) {
1668	>	try {
1669	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1670	>	fail("timed out waiting for Semaphore for "
1671	>	+ (LONG_DELAY_MS/1000) + " sec");
1672	>	} catch (Throwable fail) {
1673	>	threadUnexpectedException(fail);
1674	>	}
1675	>	}
1676	>
1677	>	public void await(CyclicBarrier barrier) {
1678	>	try {
1679	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1680	>	} catch (Throwable fail) {
1681	>	threadUnexpectedException(fail);
1682	>	}
1683	>	}
1684	>
1685	>	//     /**
1686	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1687	>	//      */
1688	>	//     public void await(AtomicBoolean flag) {
1689	>	//         await(flag, LONG_DELAY_MS);
1690	>	//     }
1691	>
1692	>	//     /**
1693	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1694	>	//      */
1695	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1696	>	//         long startTime = System.nanoTime();
1697	>	//         while (!flag.get()) {
1698	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1699	>	//                 throw new AssertionFailedError("timed out");
1700	>	//             Thread.yield();
1701	>	//         }
1702	>	//     }
1703	>
1704	>	public static class NPETask implements Callable<String> {
1705	>	public String call() { throw new NullPointerException(); }
1706	>	}
1707	>
1708	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1709	>	protected void realRun() {
1710		try {
1711	<	Thread.sleep(MEDIUM_DELAY_MS);
1712	<	}
428	<	catch(InterruptedException success) {
429	<	}
1711	>	delay(SMALL_DELAY_MS);
1712	>	} catch (InterruptedException ok) {}
1713		}
1714		}
1715
1716	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1717	+	return new CheckedRunnable() {
1718	+	protected void realRun() {
1719	+	try {
1720	+	delay(timeoutMillis);
1721	+	} catch (InterruptedException ok) {}
1722	+	}};
1723	+	}
1724	+
1725		/**
1726		* For use as ThreadFactory in constructors
1727		*/
1728	<	static class SimpleThreadFactory implements ThreadFactory{
1729	<	public Thread newThread(Runnable r){
1728	>	public static class SimpleThreadFactory implements ThreadFactory {
1729	>	public Thread newThread(Runnable r) {
1730		return new Thread(r);
1731	<	}
1731	>	}
1732	>	}
1733	>
1734	>	public interface TrackedRunnable extends Runnable {
1735	>	boolean isDone();
1736		}
1737
1738	<	static class TrackedShortRunnable implements Runnable {
1739	<	volatile boolean done = false;
1738	>	public static class TrackedNoOpRunnable implements Runnable {
1739	>	public volatile boolean done = false;
1740		public void run() {
1741	+	done = true;
1742	+	}
1743	+	}
1744	+
1745	+	/**
1746	+	* Analog of CheckedRunnable for RecursiveAction
1747	+	*/
1748	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1749	+	protected abstract void realCompute() throws Throwable;
1750	+
1751	+	@Override protected final void compute() {
1752		try {
1753	<	Thread.sleep(SMALL_DELAY_MS);
1754	<	done = true;
1755	<	} catch(Exception e){
1753	>	realCompute();
1754	>	} catch (Throwable fail) {
1755	>	threadUnexpectedException(fail);
1756		}
1757		}
1758		}
1759
1760	<	static class TrackedMediumRunnable implements Runnable {
1761	<	volatile boolean done = false;
1762	<	public void run() {
1760	>	/**
1761	>	* Analog of CheckedCallable for RecursiveTask
1762	>	*/
1763	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1764	>	protected abstract T realCompute() throws Throwable;
1765	>
1766	>	@Override protected final T compute() {
1767		try {
1768	<	Thread.sleep(MEDIUM_DELAY_MS);
1769	<	done = true;
1770	<	} catch(Exception e){
1768	>	return realCompute();
1769	>	} catch (Throwable fail) {
1770	>	threadUnexpectedException(fail);
1771	>	return null;
1772		}
1773		}
1774		}
1775
1776	<	static class TrackedLongRunnable implements Runnable {
1777	<	volatile boolean done = false;
1778	<	public void run() {
1776	>	/**
1777	>	* For use as RejectedExecutionHandler in constructors
1778	>	*/
1779	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1780	>	public void rejectedExecution(Runnable r,
1781	>	ThreadPoolExecutor executor) {}
1782	>	}
1783	>
1784	>	/**
1785	>	* A CyclicBarrier that uses timed await and fails with
1786	>	* AssertionFailedErrors instead of throwing checked exceptions.
1787	>	*/
1788	>	public static class CheckedBarrier extends CyclicBarrier {
1789	>	public CheckedBarrier(int parties) { super(parties); }
1790	>
1791	>	public int await() {
1792		try {
1793	<	Thread.sleep(LONG_DELAY_MS);
1794	<	done = true;
1795	<	} catch(Exception e){
1793	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1794	>	} catch (TimeoutException timedOut) {
1795	>	throw new AssertionFailedError("timed out");
1796	>	} catch (Exception fail) {
1797	>	AssertionFailedError afe =
1798	>	new AssertionFailedError("Unexpected exception: " + fail);
1799	>	afe.initCause(fail);
1800	>	throw afe;
1801		}
1802		}
1803		}
1804
1805	<	static class TrackedNoOpRunnable implements Runnable {
1806	<	volatile boolean done = false;
1807	<	public void run() {
1808	<	done = true;
1805	>	void checkEmpty(BlockingQueue q) {
1806	>	try {
1807	>	assertTrue(q.isEmpty());
1808	>	assertEquals(0, q.size());
1809	>	assertNull(q.peek());
1810	>	assertNull(q.poll());
1811	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1812	>	assertEquals(q.toString(), "[]");
1813	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1814	>	assertFalse(q.iterator().hasNext());
1815	>	try {
1816	>	q.element();
1817	>	shouldThrow();
1818	>	} catch (NoSuchElementException success) {}
1819	>	try {
1820	>	q.iterator().next();
1821	>	shouldThrow();
1822	>	} catch (NoSuchElementException success) {}
1823	>	try {
1824	>	q.remove();
1825	>	shouldThrow();
1826	>	} catch (NoSuchElementException success) {}
1827	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1828	>	}
1829	>
1830	>	void assertSerialEquals(Object x, Object y) {
1831	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1832	>	}
1833	>
1834	>	void assertNotSerialEquals(Object x, Object y) {
1835	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1836	>	}
1837	>
1838	>	byte[] serialBytes(Object o) {
1839	>	try {
1840	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1841	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1842	>	oos.writeObject(o);
1843	>	oos.flush();
1844	>	oos.close();
1845	>	return bos.toByteArray();
1846	>	} catch (Throwable fail) {
1847	>	threadUnexpectedException(fail);
1848	>	return new byte[0];
1849	>	}
1850	>	}
1851	>
1852	>	void assertImmutable(final Object o) {
1853	>	if (o instanceof Collection) {
1854	>	assertThrows(
1855	>	UnsupportedOperationException.class,
1856	>	new Runnable() { public void run() {
1857	>	((Collection) o).add(null);}});
1858	>	}
1859	>	}
1860	>
1861	>	@SuppressWarnings("unchecked")
1862	>	<T> T serialClone(T o) {
1863	>	try {
1864	>	ObjectInputStream ois = new ObjectInputStream
1865	>	(new ByteArrayInputStream(serialBytes(o)));
1866	>	T clone = (T) ois.readObject();
1867	>	if (o == clone) assertImmutable(o);
1868	>	assertSame(o.getClass(), clone.getClass());
1869	>	return clone;
1870	>	} catch (Throwable fail) {
1871	>	threadUnexpectedException(fail);
1872	>	return null;
1873		}
1874		}
1875
1876	<	static class TrackedCallable implements Callable {
1877	<	volatile boolean done = false;
1878	<	public Object call() {
1879	<	try {
1880	<	Thread.sleep(SMALL_DELAY_MS);
1881	<	done = true;
1882	<	} catch(Exception e){
1876	>	/**
1877	>	* A version of serialClone that leaves error handling (for
1878	>	* e.g. NotSerializableException) up to the caller.
1879	>	*/
1880	>	@SuppressWarnings("unchecked")
1881	>	<T> T serialClonePossiblyFailing(T o)
1882	>	throws ReflectiveOperationException, java.io.IOException {
1883	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1884	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1885	>	oos.writeObject(o);
1886	>	oos.flush();
1887	>	oos.close();
1888	>	ObjectInputStream ois = new ObjectInputStream
1889	>	(new ByteArrayInputStream(bos.toByteArray()));
1890	>	T clone = (T) ois.readObject();
1891	>	if (o == clone) assertImmutable(o);
1892	>	assertSame(o.getClass(), clone.getClass());
1893	>	return clone;
1894	>	}
1895	>
1896	>	/**
1897	>	* If o implements Cloneable and has a public clone method,
1898	>	* returns a clone of o, else null.
1899	>	*/
1900	>	@SuppressWarnings("unchecked")
1901	>	<T> T cloneableClone(T o) {
1902	>	if (!(o instanceof Cloneable)) return null;
1903	>	final T clone;
1904	>	try {
1905	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1906	>	} catch (NoSuchMethodException ok) {
1907	>	return null;
1908	>	} catch (ReflectiveOperationException unexpected) {
1909	>	throw new Error(unexpected);
1910	>	}
1911	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1912	>	assertSame(o.getClass(), clone.getClass());
1913	>	return clone;
1914	>	}
1915	>
1916	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1917	>	Runnable... throwingActions) {
1918	>	for (Runnable throwingAction : throwingActions) {
1919	>	boolean threw = false;
1920	>	try { throwingAction.run(); }
1921	>	catch (Throwable t) {
1922	>	threw = true;
1923	>	if (!expectedExceptionClass.isInstance(t)) {
1924	>	AssertionFailedError afe =
1925	>	new AssertionFailedError
1926	>	("Expected " + expectedExceptionClass.getName() +
1927	>	", got " + t.getClass().getName());
1928	>	afe.initCause(t);
1929	>	threadUnexpectedException(afe);
1930	>	}
1931		}
1932	<	return Boolean.TRUE;
1932	>	if (!threw)
1933	>	shouldThrow(expectedExceptionClass.getName());
1934		}
1935		}
1936
1937	+	public void assertIteratorExhausted(Iterator<?> it) {
1938	+	try {
1939	+	it.next();
1940	+	shouldThrow();
1941	+	} catch (NoSuchElementException success) {}
1942	+	assertFalse(it.hasNext());
1943	+	}
1944	+
1945	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1946	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1947	+	}
1948	+
1949	+	public Runnable runnableThrowing(final RuntimeException ex) {
1950	+	return new Runnable() { public void run() { throw ex; }};
1951	+	}
1952	+
1953	+	/** A reusable thread pool to be shared by tests. */
1954	+	static final ExecutorService cachedThreadPool =
1955	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1956	+	1000L, MILLISECONDS,
1957	+	new SynchronousQueue<Runnable>());
1958	+
1959	+	static <T> void shuffle(T[] array) {
1960	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1961	+	}
1962	+
1963	+	// --- Shared assertions for Executor tests ---
1964	+
1965		/**
1966	<	* For use as RejectedExecutionHandler in constructors
1966	>	* Returns maximum number of tasks that can be submitted to given
1967	>	* pool (with bounded queue) before saturation (when submission
1968	>	* throws RejectedExecutionException).
1969		*/
1970	<	static class NoOpREHandler implements RejectedExecutionHandler{
1971	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1970	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1971	>	BlockingQueue<Runnable> q = pool.getQueue();
1972	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1973	>	}
1974	>
1975	>	@SuppressWarnings("FutureReturnValueIgnored")
1976	>	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1977	>	try {
1978	>	e.execute((Runnable) null);
1979	>	shouldThrow();
1980	>	} catch (NullPointerException success) {}
1981	>
1982	>	if (! (e instanceof ExecutorService)) return;
1983	>	ExecutorService es = (ExecutorService) e;
1984	>	try {
1985	>	es.submit((Runnable) null);
1986	>	shouldThrow();
1987	>	} catch (NullPointerException success) {}
1988	>	try {
1989	>	es.submit((Runnable) null, Boolean.TRUE);
1990	>	shouldThrow();
1991	>	} catch (NullPointerException success) {}
1992	>	try {
1993	>	es.submit((Callable) null);
1994	>	shouldThrow();
1995	>	} catch (NullPointerException success) {}
1996	>
1997	>	if (! (e instanceof ScheduledExecutorService)) return;
1998	>	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1999	>	try {
2000	>	ses.schedule((Runnable) null,
2001	>	randomTimeout(), randomTimeUnit());
2002	>	shouldThrow();
2003	>	} catch (NullPointerException success) {}
2004	>	try {
2005	>	ses.schedule((Callable) null,
2006	>	randomTimeout(), randomTimeUnit());
2007	>	shouldThrow();
2008	>	} catch (NullPointerException success) {}
2009	>	try {
2010	>	ses.scheduleAtFixedRate((Runnable) null,
2011	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2012	>	shouldThrow();
2013	>	} catch (NullPointerException success) {}
2014	>	try {
2015	>	ses.scheduleWithFixedDelay((Runnable) null,
2016	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2017	>	shouldThrow();
2018	>	} catch (NullPointerException success) {}
2019	>	}
2020	>
2021	>	void setRejectedExecutionHandler(
2022	>	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
2023	>	p.setRejectedExecutionHandler(handler);
2024	>	assertSame(handler, p.getRejectedExecutionHandler());
2025	>	}
2026	>
2027	>	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
2028	>	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
2029	>	final long savedTaskCount = p.getTaskCount();
2030	>	final long savedCompletedTaskCount = p.getCompletedTaskCount();
2031	>	final int savedQueueSize = p.getQueue().size();
2032	>	final boolean stock = (p.getClass().getClassLoader() == null);
2033	>
2034	>	Runnable r = () -> {};
2035	>	Callable<Boolean> c = () -> Boolean.TRUE;
2036	>
2037	>	class Recorder implements RejectedExecutionHandler {
2038	>	public volatile Runnable r = null;
2039	>	public volatile ThreadPoolExecutor p = null;
2040	>	public void reset() { r = null; p = null; }
2041	>	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2042	>	assertNull(this.r);
2043	>	assertNull(this.p);
2044	>	this.r = r;
2045	>	this.p = p;
2046	>	}
2047	>	}
2048	>
2049	>	// check custom handler is invoked exactly once per task
2050	>	Recorder recorder = new Recorder();
2051	>	setRejectedExecutionHandler(p, recorder);
2052	>	for (int i = 2; i--> 0; ) {
2053	>	recorder.reset();
2054	>	p.execute(r);
2055	>	if (stock && p.getClass() == ThreadPoolExecutor.class)
2056	>	assertSame(r, recorder.r);
2057	>	assertSame(p, recorder.p);
2058	>
2059	>	recorder.reset();
2060	>	assertFalse(p.submit(r).isDone());
2061	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2062	>	assertSame(p, recorder.p);
2063	>
2064	>	recorder.reset();
2065	>	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2066	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2067	>	assertSame(p, recorder.p);
2068	>
2069	>	recorder.reset();
2070	>	assertFalse(p.submit(c).isDone());
2071	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2072	>	assertSame(p, recorder.p);
2073	>
2074	>	if (p instanceof ScheduledExecutorService) {
2075	>	ScheduledExecutorService s = (ScheduledExecutorService) p;
2076	>	ScheduledFuture<?> future;
2077	>
2078	>	recorder.reset();
2079	>	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2080	>	assertFalse(future.isDone());
2081	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2082	>	assertSame(p, recorder.p);
2083	>
2084	>	recorder.reset();
2085	>	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2086	>	assertFalse(future.isDone());
2087	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2088	>	assertSame(p, recorder.p);
2089	>
2090	>	recorder.reset();
2091	>	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2092	>	assertFalse(future.isDone());
2093	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2094	>	assertSame(p, recorder.p);
2095	>
2096	>	recorder.reset();
2097	>	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2098	>	assertFalse(future.isDone());
2099	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2100	>	assertSame(p, recorder.p);
2101	>	}
2102	>	}
2103	>
2104	>	// Checking our custom handler above should be sufficient, but
2105	>	// we add some integration tests of standard handlers.
2106	>	final AtomicReference<Thread> thread = new AtomicReference<>();
2107	>	final Runnable setThread = () -> thread.set(Thread.currentThread());
2108	>
2109	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2110	>	try {
2111	>	p.execute(setThread);
2112	>	shouldThrow();
2113	>	} catch (RejectedExecutionException success) {}
2114	>	assertNull(thread.get());
2115	>
2116	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2117	>	p.execute(setThread);
2118	>	assertNull(thread.get());
2119	>
2120	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2121	>	p.execute(setThread);
2122	>	if (p.isShutdown())
2123	>	assertNull(thread.get());
2124	>	else
2125	>	assertSame(Thread.currentThread(), thread.get());
2126	>
2127	>	setRejectedExecutionHandler(p, savedHandler);
2128	>
2129	>	// check that pool was not perturbed by handlers
2130	>	assertEquals(savedTaskCount, p.getTaskCount());
2131	>	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2132	>	assertEquals(savedQueueSize, p.getQueue().size());
2133		}
500	–
501	–
2134		}

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