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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.129 by jsr166, Fri Feb 27 22:10:29 2015 UTC vs.
Revision 1.270 by jsr166, Sun Sep 29 20:18:35 2019 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
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	+	/*
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;
#	Line 14 | Line 49 | import java.io.ByteArrayOutputStream;
49		import java.io.ObjectInputStream;
50		import java.io.ObjectOutputStream;
51		import java.lang.management.ManagementFactory;
52	+	import java.lang.management.LockInfo;
53		import java.lang.management.ThreadInfo;
54	+	import java.lang.management.ThreadMXBean;
55	+	import java.lang.reflect.Constructor;
56		import java.lang.reflect.Method;
57	+	import java.lang.reflect.Modifier;
58		import java.security.CodeSource;
59		import java.security.Permission;
60		import java.security.PermissionCollection;
#	Line 25 | Line 64 | import java.security.ProtectionDomain;
64		import java.security.SecurityPermission;
65		import java.util.ArrayList;
66		import java.util.Arrays;
67	+	import java.util.Collection;
68	+	import java.util.Collections;
69		import java.util.Date;
70	+	import java.util.Deque;
71		import java.util.Enumeration;
72	+	import java.util.HashSet;
73		import java.util.Iterator;
74		import java.util.List;
75		import java.util.NoSuchElementException;
76		import java.util.PropertyPermission;
77	+	import java.util.Set;
78		import java.util.concurrent.BlockingQueue;
79		import java.util.concurrent.Callable;
80		import java.util.concurrent.CountDownLatch;
81		import java.util.concurrent.CyclicBarrier;
82	+	import java.util.concurrent.ExecutionException;
83	+	import java.util.concurrent.Executor;
84	+	import java.util.concurrent.Executors;
85		import java.util.concurrent.ExecutorService;
86	+	import java.util.concurrent.ForkJoinPool;
87		import java.util.concurrent.Future;
88	+	import java.util.concurrent.FutureTask;
89		import java.util.concurrent.RecursiveAction;
90		import java.util.concurrent.RecursiveTask;
91	+	import java.util.concurrent.RejectedExecutionException;
92		import java.util.concurrent.RejectedExecutionHandler;
93		import java.util.concurrent.Semaphore;
94	+	import java.util.concurrent.ScheduledExecutorService;
95	+	import java.util.concurrent.ScheduledFuture;
96	+	import java.util.concurrent.SynchronousQueue;
97		import java.util.concurrent.ThreadFactory;
98	+	import java.util.concurrent.ThreadLocalRandom;
99		import java.util.concurrent.ThreadPoolExecutor;
100	+	import java.util.concurrent.TimeUnit;
101		import java.util.concurrent.TimeoutException;
102	+	import java.util.concurrent.atomic.AtomicBoolean;
103		import java.util.concurrent.atomic.AtomicReference;
104		import java.util.regex.Pattern;
105
50	–	import junit.framework.AssertionFailedError;
106		import junit.framework.Test;
107		import junit.framework.TestCase;
108	+	import junit.framework.TestResult;
109		import junit.framework.TestSuite;
110
111		/**
#	Line 62 | Line 118 | import junit.framework.TestSuite;
118		*
119		* <ol>
120		*
121	<	* <li> All assertions in code running in generated threads must use
122	<	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
123	<	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
124	<	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
125	<	* particularly recommended) for other code to use these forms too.
126	<	* Only the most typically used JUnit assertion methods are defined
127	<	* this way, but enough to live with.</li>
121	>	* <li>All code not running in the main test thread (manually spawned threads
122	>	* or the common fork join pool) must be checked for failure (and completion!).
123	>	* Mechanisms that can be used to ensure this are:
124	>	*   <ol>
125	>	*   <li>Signalling via a synchronizer like AtomicInteger or CountDownLatch
126	>	*    that the task completed normally, which is checked before returning from
127	>	*    the test method in the main thread.
128	>	*   <li>Using the forms {@link #threadFail}, {@link #threadAssertTrue},
129	>	*    or {@link #threadAssertNull}, (not {@code fail}, {@code assertTrue}, etc.)
130	>	*    Only the most typically used JUnit assertion methods are defined
131	>	*    this way, but enough to live with.
132	>	*   <li>Recording failure explicitly using {@link #threadUnexpectedException}
133	>	*    or {@link #threadRecordFailure}.
134	>	*   <li>Using a wrapper like CheckedRunnable that uses one the mechanisms above.
135	>	*   </ol>
136		*
137	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
137	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
138		* to invoke {@code super.setUp} and {@code super.tearDown} within
139		* them. These methods are used to clear and check for thread
140	<	* assertion failures.</li>
140	>	* assertion failures.
141		*
142		* <li>All delays and timeouts must use one of the constants {@code
143		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 84 | Line 148 | import junit.framework.TestSuite;
148		* is always discriminable as larger than SHORT and smaller than
149		* MEDIUM.  And so on. These constants are set to conservative values,
150		* but even so, if there is ever any doubt, they can all be increased
151	<	* in one spot to rerun tests on slower platforms.</li>
151	>	* in one spot to rerun tests on slower platforms.
152		*
153	<	* <li> All threads generated must be joined inside each test case
153	>	* <li>All threads generated must be joined inside each test case
154		* method (or {@code fail} to do so) before returning from the
155		* method. The {@code joinPool} method can be used to do this when
156	<	* using Executors.</li>
156	>	* using Executors.
157		*
158		* </ol>
159		*
160		* <p><b>Other notes</b>
161		* <ul>
162		*
163	<	* <li> Usually, there is one testcase method per JSR166 method
163	>	* <li>Usually, there is one testcase method per JSR166 method
164		* covering "normal" operation, and then as many exception-testing
165		* methods as there are exceptions the method can throw. Sometimes
166		* there are multiple tests per JSR166 method when the different
167		* "normal" behaviors differ significantly. And sometimes testcases
168	<	* cover multiple methods when they cannot be tested in
105	<	* isolation.</li>
168	>	* cover multiple methods when they cannot be tested in isolation.
169		*
170	<	* <li> The documentation style for testcases is to provide as javadoc
170	>	* <li>The documentation style for testcases is to provide as javadoc
171		* a simple sentence or two describing the property that the testcase
172		* method purports to test. The javadocs do not say anything about how
173	<	* the property is tested. To find out, read the code.</li>
173	>	* the property is tested. To find out, read the code.
174		*
175	<	* <li> These tests are "conformance tests", and do not attempt to
175	>	* <li>These tests are "conformance tests", and do not attempt to
176		* test throughput, latency, scalability or other performance factors
177		* (see the separate "jtreg" tests for a set intended to check these
178		* for the most central aspects of functionality.) So, most tests use
179		* the smallest sensible numbers of threads, collection sizes, etc
180	<	* needed to check basic conformance.</li>
180	>	* needed to check basic conformance.
181		*
182		* <li>The test classes currently do not declare inclusion in
183		* any particular package to simplify things for people integrating
184	<	* them in TCK test suites.</li>
184	>	* them in TCK test suites.
185		*
186	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
187	<	* runs all JSR166 unit tests.</li>
186	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
187	>	* runs all JSR166 unit tests.
188		*
189		* </ul>
190		*/
#	Line 160 | Line 223 | public class JSR166TestCase extends Test
223		Integer.getInteger("jsr166.runsPerTest", 1);
224
225		/**
226	+	* The number of repetitions of the test suite (for finding leaks?).
227	+	*/
228	+	private static final int suiteRuns =
229	+	Integer.getInteger("jsr166.suiteRuns", 1);
230	+
231	+	/**
232	+	* Returns the value of the system property, or NaN if not defined.
233	+	*/
234	+	private static float systemPropertyValue(String name) {
235	+	String floatString = System.getProperty(name);
236	+	if (floatString == null)
237	+	return Float.NaN;
238	+	try {
239	+	return Float.parseFloat(floatString);
240	+	} catch (NumberFormatException ex) {
241	+	throw new IllegalArgumentException(
242	+	String.format("Bad float value in system property %s=%s",
243	+	name, floatString));
244	+	}
245	+	}
246	+
247	+	private static final ThreadMXBean THREAD_MXBEAN
248	+	= ManagementFactory.getThreadMXBean();
249	+
250	+	/**
251	+	* The scaling factor to apply to standard delays used in tests.
252	+	* May be initialized from any of:
253	+	* - the "jsr166.delay.factor" system property
254	+	* - the "test.timeout.factor" system property (as used by jtreg)
255	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
256	+	* - hard-coded fuzz factor when using a known slowpoke VM
257	+	*/
258	+	private static final float delayFactor = delayFactor();
259	+
260	+	private static float delayFactor() {
261	+	float x;
262	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
263	+	return x;
264	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
265	+	return x;
266	+	String prop = System.getProperty("java.vm.version");
267	+	if (prop != null && prop.matches(".*debug.*"))
268	+	return 4.0f; // How much slower is fastdebug than product?!
269	+	return 1.0f;
270	+	}
271	+
272	+	public JSR166TestCase() { super(); }
273	+	public JSR166TestCase(String name) { super(name); }
274	+
275	+	/**
276		* A filter for tests to run, matching strings of the form
277		* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
278		* Usefully combined with jsr166.runsPerTest.
#	Line 171 | Line 284 | public class JSR166TestCase extends Test
284		return (regex == null) ? null : Pattern.compile(regex);
285		}
286
287	<	protected void runTest() throws Throwable {
287	>	// Instrumentation to debug very rare, but very annoying hung test runs.
288	>	static volatile TestCase currentTestCase;
289	>	// static volatile int currentRun = 0;
290	>	static {
291	>	Runnable wedgedTestDetector = new Runnable() { public void run() {
292	>	// Avoid spurious reports with enormous runsPerTest.
293	>	// A single test case run should never take more than 1 second.
294	>	// But let's cap it at the high end too ...
295	>	final int timeoutMinutesMin = Math.max(runsPerTest / 60, 1)
296	>	* Math.max((int) delayFactor, 1);
297	>	final int timeoutMinutes = Math.min(15, timeoutMinutesMin);
298	>	for (TestCase lastTestCase = currentTestCase;;) {
299	>	try { MINUTES.sleep(timeoutMinutes); }
300	>	catch (InterruptedException unexpected) { break; }
301	>	if (lastTestCase == currentTestCase) {
302	>	System.err.printf(
303	>	"Looks like we're stuck running test: %s%n",
304	>	lastTestCase);
305	>	//                     System.err.printf(
306	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
307	>	//                         lastTestCase, currentRun, runsPerTest);
308	>	//                     System.err.println("availableProcessors=" +
309	>	//                         Runtime.getRuntime().availableProcessors());
310	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
311	>	dumpTestThreads();
312	>	// one stack dump is probably enough; more would be spam
313	>	break;
314	>	}
315	>	lastTestCase = currentTestCase;
316	>	}}};
317	>	Thread thread = new Thread(wedgedTestDetector, "WedgedTestDetector");
318	>	thread.setDaemon(true);
319	>	thread.start();
320	>	}
321	>
322	>	//     public static String cpuModel() {
323	>	//         try {
324	>	//             java.util.regex.Matcher matcher
325	>	//               = Pattern.compile("model name\\s*: (.*)")
326	>	//                 .matcher(new String(
327	>	//                     java.nio.file.Files.readAllBytes(
328	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
329	>	//             matcher.find();
330	>	//             return matcher.group(1);
331	>	//         } catch (Exception ex) { return null; }
332	>	//     }
333	>
334	>	public void runBare() throws Throwable {
335	>	currentTestCase = this;
336		if (methodFilter == null
337	<	|| methodFilter.matcher(toString()).find()) {
338	<	for (int i = 0; i < runsPerTest; i++) {
339	<	if (profileTests)
340	<	runTestProfiled();
341	<	else
342	<	super.runTest();
343	<	}
337	>	|| methodFilter.matcher(toString()).find())
338	>	super.runBare();
339	>	}
340	>
341	>	protected void runTest() throws Throwable {
342	>	for (int i = 0; i < runsPerTest; i++) {
343	>	// currentRun = i;
344	>	if (profileTests)
345	>	runTestProfiled();
346	>	else
347	>	super.runTest();
348		}
349		}
350
351		protected void runTestProfiled() throws Throwable {
352	<	// Warmup run, notably to trigger all needed classloading.
353	<	super.runTest();
189	<	long t0 = System.nanoTime();
190	<	try {
352	>	for (int i = 0; i < 2; i++) {
353	>	long startTime = System.nanoTime();
354		super.runTest();
355	<	} finally {
356	<	long elapsedMillis = millisElapsedSince(t0);
357	<	if (elapsedMillis >= profileThreshold)
358	<	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
355	>	long elapsedMillis = millisElapsedSince(startTime);
356	>	if (elapsedMillis < profileThreshold)
357	>	break;
358	>	// Never report first run of any test; treat it as a
359	>	// warmup run, notably to trigger all needed classloading,
360	>	if (i > 0)
361	>	System.out.printf("%s: %d%n", toString(), elapsedMillis);
362		}
363		}
364
365		/**
366		* Runs all JSR166 unit tests using junit.textui.TestRunner.
201	–	* Optional command line arg provides the number of iterations to
202	–	* repeat running the tests.
367		*/
368		public static void main(String[] args) {
369	+	main(suite(), args);
370	+	}
371	+
372	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
373	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
374	+	long runTime;
375	+	public void startTest(Test test) {}
376	+	protected void printHeader(long runTime) {
377	+	this.runTime = runTime; // defer printing for later
378	+	}
379	+	protected void printFooter(TestResult result) {
380	+	if (result.wasSuccessful()) {
381	+	getWriter().println("OK (" + result.runCount() + " tests)"
382	+	+ "  Time: " + elapsedTimeAsString(runTime));
383	+	} else {
384	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
385	+	super.printFooter(result);
386	+	}
387	+	}
388	+	}
389	+
390	+	/**
391	+	* Returns a TestRunner that doesn't bother with unnecessary
392	+	* fluff, like printing a "." for each test case.
393	+	*/
394	+	static junit.textui.TestRunner newPithyTestRunner() {
395	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
396	+	runner.setPrinter(new PithyResultPrinter(System.out));
397	+	return runner;
398	+	}
399	+
400	+	/**
401	+	* Runs all unit tests in the given test suite.
402	+	* Actual behavior influenced by jsr166.* system properties.
403	+	*/
404	+	static void main(Test suite, String[] args) {
405		if (useSecurityManager) {
406		System.err.println("Setting a permissive security manager");
407		Policy.setPolicy(permissivePolicy());
408		System.setSecurityManager(new SecurityManager());
409		}
410	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
411	<
412	<	Test s = suite();
413	<	for (int i = 0; i < iters; ++i) {
214	<	junit.textui.TestRunner.run(s);
410	>	for (int i = 0; i < suiteRuns; i++) {
411	>	TestResult result = newPithyTestRunner().doRun(suite);
412	>	if (!result.wasSuccessful())
413	>	System.exit(1);
414		System.gc();
415		System.runFinalization();
416		}
218	–	System.exit(0);
417		}
418
419		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 236 | Line 434 | public class JSR166TestCase extends Test
434		for (String testClassName : testClassNames) {
435		try {
436		Class<?> testClass = Class.forName(testClassName);
437	<	Method m = testClass.getDeclaredMethod("suite",
240	<	new Class<?>[0]);
437	>	Method m = testClass.getDeclaredMethod("suite");
438		suite.addTest(newTestSuite((Test)m.invoke(null)));
439	<	} catch (Exception e) {
440	<	throw new Error("Missing test class", e);
439	>	} catch (ReflectiveOperationException e) {
440	>	throw new AssertionError("Missing test class", e);
441		}
442		}
443		}
#	Line 262 | Line 459 | public class JSR166TestCase extends Test
459		}
460		}
461
462	<	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
463	<	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
464	<	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
465	<	public static boolean atLeastJava9() {
466	<	// As of 2014-05, java9 still uses 52.0 class file version
467	<	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
468	<	}
462	>	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
463	>	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
464	>	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
465	>	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
466	>	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
467	>	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
468	>	public static boolean atLeastJava12() { return JAVA_CLASS_VERSION >= 56.0; }
469	>	public static boolean atLeastJava13() { return JAVA_CLASS_VERSION >= 57.0; }
470	>	public static boolean atLeastJava14() { return JAVA_CLASS_VERSION >= 58.0; }
471	>	public static boolean atLeastJava15() { return JAVA_CLASS_VERSION >= 59.0; }
472	>	public static boolean atLeastJava16() { return JAVA_CLASS_VERSION >= 60.0; }
473	>	public static boolean atLeastJava17() { return JAVA_CLASS_VERSION >= 61.0; }
474
475		/**
476		* Collects all JSR166 unit tests as one suite.
#	Line 289 | Line 491 | public class JSR166TestCase extends Test
491		AbstractQueuedLongSynchronizerTest.suite(),
492		ArrayBlockingQueueTest.suite(),
493		ArrayDequeTest.suite(),
494	+	ArrayListTest.suite(),
495		AtomicBooleanTest.suite(),
496		AtomicIntegerArrayTest.suite(),
497		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 311 | Line 514 | public class JSR166TestCase extends Test
514		CopyOnWriteArrayListTest.suite(),
515		CopyOnWriteArraySetTest.suite(),
516		CountDownLatchTest.suite(),
517	+	CountedCompleterTest.suite(),
518		CyclicBarrierTest.suite(),
519		DelayQueueTest.suite(),
520		EntryTest.suite(),
#	Line 318 | Line 522 | public class JSR166TestCase extends Test
522		ExecutorsTest.suite(),
523		ExecutorCompletionServiceTest.suite(),
524		FutureTaskTest.suite(),
525	+	HashtableTest.suite(),
526		LinkedBlockingDequeTest.suite(),
527		LinkedBlockingQueueTest.suite(),
528		LinkedListTest.suite(),
#	Line 339 | Line 544 | public class JSR166TestCase extends Test
544		TreeMapTest.suite(),
545		TreeSetTest.suite(),
546		TreeSubMapTest.suite(),
547	<	TreeSubSetTest.suite());
547	>	TreeSubSetTest.suite(),
548	>	VectorTest.suite());
549
550		// Java8+ test classes
551		if (atLeastJava8()) {
552		String[] java8TestClassNames = {
553	+	"ArrayDeque8Test",
554		"Atomic8Test",
555		"CompletableFutureTest",
556		"ConcurrentHashMap8Test",
557	<	"CountedCompleterTest",
557	>	"CountedCompleter8Test",
558		"DoubleAccumulatorTest",
559		"DoubleAdderTest",
560		"ForkJoinPool8Test",
561		"ForkJoinTask8Test",
562	+	"HashMapTest",
563	+	"LinkedBlockingDeque8Test",
564	+	"LinkedBlockingQueue8Test",
565	+	"LinkedHashMapTest",
566		"LongAccumulatorTest",
567		"LongAdderTest",
568		"SplittableRandomTest",
569		"StampedLockTest",
570	+	"SubmissionPublisherTest",
571		"ThreadLocalRandom8Test",
572	+	"TimeUnit8Test",
573		};
574		addNamedTestClasses(suite, java8TestClassNames);
575		}
#	Line 364 | Line 577 | public class JSR166TestCase extends Test
577		// Java9+ test classes
578		if (atLeastJava9()) {
579		String[] java9TestClassNames = {
580	<	"ThreadPoolExecutor9Test",
580	>	"AtomicBoolean9Test",
581	>	"AtomicInteger9Test",
582	>	"AtomicIntegerArray9Test",
583	>	"AtomicLong9Test",
584	>	"AtomicLongArray9Test",
585	>	"AtomicReference9Test",
586	>	"AtomicReferenceArray9Test",
587	>	"ExecutorCompletionService9Test",
588	>	"ForkJoinPool9Test",
589		};
590		addNamedTestClasses(suite, java9TestClassNames);
591		}
#	Line 372 | Line 593 | public class JSR166TestCase extends Test
593		return suite;
594		}
595
596	+	/** Returns list of junit-style test method names in given class. */
597	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
598	+	Method[] methods = testClass.getDeclaredMethods();
599	+	ArrayList<String> names = new ArrayList<>(methods.length);
600	+	for (Method method : methods) {
601	+	if (method.getName().startsWith("test")
602	+	&& Modifier.isPublic(method.getModifiers())
603	+	// method.getParameterCount() requires jdk8+
604	+	&& method.getParameterTypes().length == 0) {
605	+	names.add(method.getName());
606	+	}
607	+	}
608	+	return names;
609	+	}
610	+
611	+	/**
612	+	* Returns junit-style testSuite for the given test class, but
613	+	* parameterized by passing extra data to each test.
614	+	*/
615	+	public static <ExtraData> Test parameterizedTestSuite
616	+	(Class<? extends JSR166TestCase> testClass,
617	+	Class<ExtraData> dataClass,
618	+	ExtraData data) {
619	+	try {
620	+	TestSuite suite = new TestSuite();
621	+	Constructor c =
622	+	testClass.getDeclaredConstructor(dataClass, String.class);
623	+	for (String methodName : testMethodNames(testClass))
624	+	suite.addTest((Test) c.newInstance(data, methodName));
625	+	return suite;
626	+	} catch (ReflectiveOperationException e) {
627	+	throw new AssertionError(e);
628	+	}
629	+	}
630	+
631	+	/**
632	+	* Returns junit-style testSuite for the jdk8 extension of the
633	+	* given test class, but parameterized by passing extra data to
634	+	* each test.  Uses reflection to allow compilation in jdk7.
635	+	*/
636	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
637	+	(Class<? extends JSR166TestCase> testClass,
638	+	Class<ExtraData> dataClass,
639	+	ExtraData data) {
640	+	if (atLeastJava8()) {
641	+	String name = testClass.getName();
642	+	String name8 = name.replaceAll("Test$", "8Test");
643	+	if (name.equals(name8)) throw new AssertionError(name);
644	+	try {
645	+	return (Test)
646	+	Class.forName(name8)
647	+	.getMethod("testSuite", dataClass)
648	+	.invoke(null, data);
649	+	} catch (ReflectiveOperationException e) {
650	+	throw new AssertionError(e);
651	+	}
652	+	} else {
653	+	return new TestSuite();
654	+	}
655	+	}
656	+
657		// Delays for timing-dependent tests, in milliseconds.
658
659		public static long SHORT_DELAY_MS;
#	Line 380 | Line 662 | public class JSR166TestCase extends Test
662		public static long LONG_DELAY_MS;
663
664		/**
665	<	* Returns the shortest timed delay. This could
666	<	* be reimplemented to use for example a Property.
665	>	* A delay significantly longer than LONG_DELAY_MS.
666	>	* Use this in a thread that is waited for via awaitTermination(Thread).
667	>	*/
668	>	public static long LONGER_DELAY_MS;
669	>
670	>	private static final long RANDOM_TIMEOUT;
671	>	private static final long RANDOM_EXPIRED_TIMEOUT;
672	>	private static final TimeUnit RANDOM_TIMEUNIT;
673	>	static {
674	>	ThreadLocalRandom rnd = ThreadLocalRandom.current();
675	>	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
676	>	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
677	>	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
678	>	TimeUnit[] timeUnits = TimeUnit.values();
679	>	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
680	>	}
681	>
682	>	/**
683	>	* Returns a timeout for use when any value at all will do.
684	>	*/
685	>	static long randomTimeout() { return RANDOM_TIMEOUT; }
686	>
687	>	/**
688	>	* Returns a timeout that means "no waiting", i.e. not positive.
689	>	*/
690	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
691	>
692	>	/**
693	>	* Returns a random non-null TimeUnit.
694	>	*/
695	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
696	>
697	>	/**
698	>	* Returns a random boolean; a "coin flip".
699	>	*/
700	>	static boolean randomBoolean() {
701	>	return ThreadLocalRandom.current().nextBoolean();
702	>	}
703	>
704	>	/**
705	>	* Returns a random element from given choices.
706	>	*/
707	>	<T> T chooseRandomly(List<T> choices) {
708	>	return choices.get(ThreadLocalRandom.current().nextInt(choices.size()));
709	>	}
710	>
711	>	/**
712	>	* Returns a random element from given choices.
713	>	*/
714	>	<T> T chooseRandomly(T... choices) {
715	>	return choices[ThreadLocalRandom.current().nextInt(choices.length)];
716	>	}
717	>
718	>	/**
719	>	* Returns the shortest timed delay. This can be scaled up for
720	>	* slow machines using the jsr166.delay.factor system property,
721	>	* or via jtreg's -timeoutFactor: flag.
722	>	* http://openjdk.java.net/jtreg/command-help.html
723		*/
724		protected long getShortDelay() {
725	<	return 50;
725	>	return (long) (50 * delayFactor);
726		}
727
728		/**
#	Line 395 | Line 733 | public class JSR166TestCase extends Test
733		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
734		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
735		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
736	+	LONGER_DELAY_MS = 2 * LONG_DELAY_MS;
737		}
738
739	+	private static final long TIMEOUT_DELAY_MS
740	+	= (long) (12.0 * Math.cbrt(delayFactor));
741	+
742		/**
743	<	* Returns a timeout in milliseconds to be used in tests that
744	<	* verify that operations block or time out.
743	>	* Returns a timeout in milliseconds to be used in tests that verify
744	>	* that operations block or time out.  We want this to be longer
745	>	* than the OS scheduling quantum, but not too long, so don't scale
746	>	* linearly with delayFactor; we use "crazy" cube root instead.
747		*/
748	<	long timeoutMillis() {
749	<	return SHORT_DELAY_MS / 4;
748	>	static long timeoutMillis() {
749	>	return TIMEOUT_DELAY_MS;
750		}
751
752		/**
753	<	* Returns a new Date instance representing a time delayMillis
754	<	* milliseconds in the future.
753	>	* Returns a new Date instance representing a time at least
754	>	* delayMillis milliseconds in the future.
755		*/
756		Date delayedDate(long delayMillis) {
757	<	return new Date(System.currentTimeMillis() + delayMillis);
757	>	// Add 1 because currentTimeMillis is known to round into the past.
758	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
759		}
760
761		/**
762		* The first exception encountered if any threadAssertXXX method fails.
763		*/
764		private final AtomicReference<Throwable> threadFailure
765	<	= new AtomicReference<Throwable>(null);
765	>	= new AtomicReference<>(null);
766
767		/**
768		* Records an exception so that it can be rethrown later in the test
#	Line 426 | Line 771 | public class JSR166TestCase extends Test
771		* the same test have no effect.
772		*/
773		public void threadRecordFailure(Throwable t) {
774	<	threadFailure.compareAndSet(null, t);
774	>	System.err.println(t);
775	>	if (threadFailure.compareAndSet(null, t))
776	>	dumpTestThreads();
777		}
778
779		public void setUp() {
780		setDelays();
781		}
782
783	+	void tearDownFail(String format, Object... args) {
784	+	String msg = toString() + ": " + String.format(format, args);
785	+	System.err.println(msg);
786	+	dumpTestThreads();
787	+	throw new AssertionError(msg);
788	+	}
789	+
790		/**
791		* Extra checks that get done for all test cases.
792		*
#	Line 451 | Line 805 | public class JSR166TestCase extends Test
805		throw (RuntimeException) t;
806		else if (t instanceof Exception)
807		throw (Exception) t;
808	<	else {
809	<	AssertionFailedError afe =
456	<	new AssertionFailedError(t.toString());
457	<	afe.initCause(t);
458	<	throw afe;
459	<	}
808	>	else
809	>	throw new AssertionError(t.toString(), t);
810		}
811
812		if (Thread.interrupted())
813	<	throw new AssertionFailedError("interrupt status set in main thread");
813	>	tearDownFail("interrupt status set in main thread");
814
815		checkForkJoinPoolThreadLeaks();
816		}
817
818		/**
819	<	* Finds missing try { ... } finally { joinPool(e); }
819	>	* Finds missing PoolCleaners
820		*/
821		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
822	<	Thread[] survivors = new Thread[5];
822	>	Thread[] survivors = new Thread[7];
823		int count = Thread.enumerate(survivors);
824		for (int i = 0; i < count; i++) {
825		Thread thread = survivors[i];
#	Line 477 | Line 827 | public class JSR166TestCase extends Test
827		if (name.startsWith("ForkJoinPool-")) {
828		// give thread some time to terminate
829		thread.join(LONG_DELAY_MS);
830	<	if (!thread.isAlive()) continue;
831	<	thread.stop();
832	<	throw new AssertionFailedError
483	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
484	<	toString(), name));
830	>	if (thread.isAlive())
831	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
832	>	thread);
833		}
834		}
835	+
836	+	if (!ForkJoinPool.commonPool()
837	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
838	+	tearDownFail("ForkJoin common pool thread stuck");
839		}
840
841		/**
842		* Just like fail(reason), but additionally recording (using
843	<	* threadRecordFailure) any AssertionFailedError thrown, so that
844	<	* the current testcase will fail.
843	>	* threadRecordFailure) any AssertionError thrown, so that the
844	>	* current testcase will fail.
845		*/
846		public void threadFail(String reason) {
847		try {
848		fail(reason);
849	<	} catch (AssertionFailedError t) {
850	<	threadRecordFailure(t);
851	<	fail(reason);
849	>	} catch (AssertionError fail) {
850	>	threadRecordFailure(fail);
851	>	throw fail;
852		}
853		}
854
855		/**
856		* Just like assertTrue(b), but additionally recording (using
857	<	* threadRecordFailure) any AssertionFailedError thrown, so that
858	<	* the current testcase will fail.
857	>	* threadRecordFailure) any AssertionError thrown, so that the
858	>	* current testcase will fail.
859		*/
860		public void threadAssertTrue(boolean b) {
861		try {
862		assertTrue(b);
863	<	} catch (AssertionFailedError t) {
864	<	threadRecordFailure(t);
865	<	throw t;
863	>	} catch (AssertionError fail) {
864	>	threadRecordFailure(fail);
865	>	throw fail;
866		}
867		}
868
869		/**
870		* Just like assertFalse(b), but additionally recording (using
871	<	* threadRecordFailure) any AssertionFailedError thrown, so that
872	<	* the current testcase will fail.
871	>	* threadRecordFailure) any AssertionError thrown, so that the
872	>	* current testcase will fail.
873		*/
874		public void threadAssertFalse(boolean b) {
875		try {
876		assertFalse(b);
877	<	} catch (AssertionFailedError t) {
878	<	threadRecordFailure(t);
879	<	throw t;
877	>	} catch (AssertionError fail) {
878	>	threadRecordFailure(fail);
879	>	throw fail;
880		}
881		}
882
883		/**
884		* Just like assertNull(x), but additionally recording (using
885	<	* threadRecordFailure) any AssertionFailedError thrown, so that
886	<	* the current testcase will fail.
885	>	* threadRecordFailure) any AssertionError thrown, so that the
886	>	* current testcase will fail.
887		*/
888		public void threadAssertNull(Object x) {
889		try {
890		assertNull(x);
891	<	} catch (AssertionFailedError t) {
892	<	threadRecordFailure(t);
893	<	throw t;
891	>	} catch (AssertionError fail) {
892	>	threadRecordFailure(fail);
893	>	throw fail;
894		}
895		}
896
897		/**
898		* Just like assertEquals(x, y), but additionally recording (using
899	<	* threadRecordFailure) any AssertionFailedError thrown, so that
900	<	* the current testcase will fail.
899	>	* threadRecordFailure) any AssertionError thrown, so that the
900	>	* current testcase will fail.
901		*/
902		public void threadAssertEquals(long x, long y) {
903		try {
904		assertEquals(x, y);
905	<	} catch (AssertionFailedError t) {
906	<	threadRecordFailure(t);
907	<	throw t;
905	>	} catch (AssertionError fail) {
906	>	threadRecordFailure(fail);
907	>	throw fail;
908		}
909		}
910
911		/**
912		* Just like assertEquals(x, y), but additionally recording (using
913	<	* threadRecordFailure) any AssertionFailedError thrown, so that
914	<	* the current testcase will fail.
913	>	* threadRecordFailure) any AssertionError thrown, so that the
914	>	* current testcase will fail.
915		*/
916		public void threadAssertEquals(Object x, Object y) {
917		try {
918		assertEquals(x, y);
919	<	} catch (AssertionFailedError fail) {
919	>	} catch (AssertionError fail) {
920		threadRecordFailure(fail);
921		throw fail;
922		} catch (Throwable fail) {
#	Line 574 | Line 926 | public class JSR166TestCase extends Test
926
927		/**
928		* Just like assertSame(x, y), but additionally recording (using
929	<	* threadRecordFailure) any AssertionFailedError thrown, so that
930	<	* the current testcase will fail.
929	>	* threadRecordFailure) any AssertionError thrown, so that the
930	>	* current testcase will fail.
931		*/
932		public void threadAssertSame(Object x, Object y) {
933		try {
934		assertSame(x, y);
935	<	} catch (AssertionFailedError fail) {
935	>	} catch (AssertionError fail) {
936		threadRecordFailure(fail);
937		throw fail;
938		}
#	Line 602 | Line 954 | public class JSR166TestCase extends Test
954
955		/**
956		* Records the given exception using {@link #threadRecordFailure},
957	<	* then rethrows the exception, wrapping it in an
958	<	* AssertionFailedError if necessary.
957	>	* then rethrows the exception, wrapping it in an AssertionError
958	>	* if necessary.
959		*/
960		public void threadUnexpectedException(Throwable t) {
961		threadRecordFailure(t);
#	Line 612 | Line 964 | public class JSR166TestCase extends Test
964		throw (RuntimeException) t;
965		else if (t instanceof Error)
966		throw (Error) t;
967	<	else {
968	<	AssertionFailedError afe =
617	<	new AssertionFailedError("unexpected exception: " + t);
618	<	afe.initCause(t);
619	<	throw afe;
620	<	}
967	>	else
968	>	throw new AssertionError("unexpected exception: " + t, t);
969		}
970
971		/**
972		* Delays, via Thread.sleep, for the given millisecond delay, but
973		* if the sleep is shorter than specified, may re-sleep or yield
974	<	* until time elapses.
974	>	* until time elapses.  Ensures that the given time, as measured
975	>	* by System.nanoTime(), has elapsed.
976		*/
977		static void delay(long millis) throws InterruptedException {
978	<	long startTime = System.nanoTime();
979	<	long ns = millis * 1000 * 1000;
980	<	for (;;) {
978	>	long nanos = millis * (1000 * 1000);
979	>	final long wakeupTime = System.nanoTime() + nanos;
980	>	do {
981		if (millis > 0L)
982		Thread.sleep(millis);
983		else // too short to sleep
984		Thread.yield();
985	<	long d = ns - (System.nanoTime() - startTime);
986	<	if (d > 0L)
987	<	millis = d / (1000 * 1000);
988	<	else
989	<	break;
985	>	nanos = wakeupTime - System.nanoTime();
986	>	millis = nanos / (1000 * 1000);
987	>	} while (nanos >= 0L);
988	>	}
989	>
990	>	/**
991	>	* Allows use of try-with-resources with per-test thread pools.
992	>	*/
993	>	class PoolCleaner implements AutoCloseable {
994	>	private final ExecutorService pool;
995	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
996	>	public void close() { joinPool(pool); }
997	>	}
998	>
999	>	/**
1000	>	* An extension of PoolCleaner that has an action to release the pool.
1001	>	*/
1002	>	class PoolCleanerWithReleaser extends PoolCleaner {
1003	>	private final Runnable releaser;
1004	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
1005	>	super(pool);
1006	>	this.releaser = releaser;
1007	>	}
1008	>	public void close() {
1009	>	try {
1010	>	releaser.run();
1011	>	} finally {
1012	>	super.close();
1013	>	}
1014		}
1015		}
1016
1017	+	PoolCleaner cleaner(ExecutorService pool) {
1018	+	return new PoolCleaner(pool);
1019	+	}
1020	+
1021	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
1022	+	return new PoolCleanerWithReleaser(pool, releaser);
1023	+	}
1024	+
1025	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
1026	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
1027	+	}
1028	+
1029	+	Runnable releaser(final CountDownLatch latch) {
1030	+	return new Runnable() { public void run() {
1031	+	do { latch.countDown(); }
1032	+	while (latch.getCount() > 0);
1033	+	}};
1034	+	}
1035	+
1036	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1037	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1038	+	}
1039	+
1040	+	Runnable releaser(final AtomicBoolean flag) {
1041	+	return new Runnable() { public void run() { flag.set(true); }};
1042	+	}
1043	+
1044		/**
1045		* Waits out termination of a thread pool or fails doing so.
1046		*/
1047	<	void joinPool(ExecutorService exec) {
1047	>	void joinPool(ExecutorService pool) {
1048		try {
1049	<	exec.shutdown();
1050	<	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
1051	<	fail("ExecutorService " + exec +
1052	<	" did not terminate in a timely manner");
1049	>	pool.shutdown();
1050	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1051	>	try {
1052	>	threadFail("ExecutorService " + pool +
1053	>	" did not terminate in a timely manner");
1054	>	} finally {
1055	>	// last resort, for the benefit of subsequent tests
1056	>	pool.shutdownNow();
1057	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1058	>	}
1059	>	}
1060		} catch (SecurityException ok) {
1061		// Allowed in case test doesn't have privs
1062		} catch (InterruptedException fail) {
1063	<	fail("Unexpected InterruptedException");
1063	>	threadFail("Unexpected InterruptedException");
1064		}
1065		}
1066
1067		/**
1068	<	* A debugging tool to print all stack traces, as jstack does.
1068	>	* Like Runnable, but with the freedom to throw anything.
1069	>	* junit folks had the same idea:
1070	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1071		*/
1072	<	static void printAllStackTraces() {
664	<	for (ThreadInfo info :
665	<	ManagementFactory.getThreadMXBean()
666	<	.dumpAllThreads(true, true))
667	<	System.err.print(info);
668	<	}
1072	>	interface Action { public void run() throws Throwable; }
1073
1074		/**
1075	<	* Checks that thread does not terminate within the default
1076	<	* millisecond delay of {@code timeoutMillis()}.
1075	>	* Runs all the given actions in parallel, failing if any fail.
1076	>	* Useful for running multiple variants of tests that are
1077	>	* necessarily individually slow because they must block.
1078		*/
1079	<	void assertThreadStaysAlive(Thread thread) {
1080	<	assertThreadStaysAlive(thread, timeoutMillis());
1079	>	void testInParallel(Action ... actions) {
1080	>	ExecutorService pool = Executors.newCachedThreadPool();
1081	>	try (PoolCleaner cleaner = cleaner(pool)) {
1082	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1083	>	for (final Action action : actions)
1084	>	futures.add(pool.submit(new CheckedRunnable() {
1085	>	public void realRun() throws Throwable { action.run();}}));
1086	>	for (Future<?> future : futures)
1087	>	try {
1088	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1089	>	} catch (ExecutionException ex) {
1090	>	threadUnexpectedException(ex.getCause());
1091	>	} catch (Exception ex) {
1092	>	threadUnexpectedException(ex);
1093	>	}
1094	>	}
1095	>	}
1096	>
1097	>	/** Returns true if thread info might be useful in a thread dump. */
1098	>	static boolean threadOfInterest(ThreadInfo info) {
1099	>	final String name = info.getThreadName();
1100	>	String lockName;
1101	>	if (name == null)
1102	>	return true;
1103	>	if (name.equals("Signal Dispatcher")
1104	>	|| name.equals("WedgedTestDetector"))
1105	>	return false;
1106	>	if (name.equals("Reference Handler")) {
1107	>	// Reference Handler stacktrace changed in JDK-8156500
1108	>	StackTraceElement[] stackTrace; String methodName;
1109	>	if ((stackTrace = info.getStackTrace()) != null
1110	>	&& stackTrace.length > 0
1111	>	&& (methodName = stackTrace[0].getMethodName()) != null
1112	>	&& methodName.equals("waitForReferencePendingList"))
1113	>	return false;
1114	>	// jdk8 Reference Handler stacktrace
1115	>	if ((lockName = info.getLockName()) != null
1116	>	&& lockName.startsWith("java.lang.ref"))
1117	>	return false;
1118	>	}
1119	>	if ((name.equals("Finalizer") || name.equals("Common-Cleaner"))
1120	>	&& (lockName = info.getLockName()) != null
1121	>	&& lockName.startsWith("java.lang.ref"))
1122	>	return false;
1123	>	if (name.startsWith("ForkJoinPool.commonPool-worker")
1124	>	&& (lockName = info.getLockName()) != null
1125	>	&& lockName.startsWith("java.util.concurrent.ForkJoinPool"))
1126	>	return false;
1127	>	return true;
1128		}
1129
1130		/**
1131	<	* Checks that thread does not terminate within the given millisecond delay.
1131	>	* A debugging tool to print stack traces of most threads, as jstack does.
1132	>	* Uninteresting threads are filtered out.
1133		*/
1134	<	void assertThreadStaysAlive(Thread thread, long millis) {
1135	<	try {
1136	<	// No need to optimize the failing case via Thread.join.
1137	<	delay(millis);
1138	<	assertTrue(thread.isAlive());
1139	<	} catch (InterruptedException fail) {
1140	<	fail("Unexpected InterruptedException");
1134	>	static void dumpTestThreads() {
1135	>	SecurityManager sm = System.getSecurityManager();
1136	>	if (sm != null) {
1137	>	try {
1138	>	System.setSecurityManager(null);
1139	>	} catch (SecurityException giveUp) {
1140	>	return;
1141	>	}
1142		}
1143	+
1144	+	System.err.println("------ stacktrace dump start ------");
1145	+	for (ThreadInfo info : THREAD_MXBEAN.dumpAllThreads(true, true))
1146	+	if (threadOfInterest(info))
1147	+	System.err.print(info);
1148	+	System.err.println("------ stacktrace dump end ------");
1149	+
1150	+	if (sm != null) System.setSecurityManager(sm);
1151		}
1152
1153		/**
1154	<	* Checks that the threads do not terminate within the default
693	<	* millisecond delay of {@code timeoutMillis()}.
1154	>	* Checks that thread eventually enters the expected blocked thread state.
1155		*/
1156	<	void assertThreadsStayAlive(Thread... threads) {
1157	<	assertThreadsStayAlive(timeoutMillis(), threads);
1156	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1157	>	// always sleep at least 1 ms, with high probability avoiding
1158	>	// transitory states
1159	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1160	>	try { delay(1); }
1161	>	catch (InterruptedException fail) {
1162	>	throw new AssertionError("Unexpected InterruptedException", fail);
1163	>	}
1164	>	Thread.State s = thread.getState();
1165	>	if (s == expected)
1166	>	return;
1167	>	else if (s == Thread.State.TERMINATED)
1168	>	fail("Unexpected thread termination");
1169	>	}
1170	>	fail("timed out waiting for thread to enter thread state " + expected);
1171		}
1172
1173		/**
1174	<	* Checks that the threads do not terminate within the given millisecond delay.
1174	>	* Returns the thread's blocker's class name, if any, else null.
1175		*/
1176	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1177	<	try {
1178	<	// No need to optimize the failing case via Thread.join.
1179	<	delay(millis);
1180	<	for (Thread thread : threads)
1181	<	assertTrue(thread.isAlive());
708	<	} catch (InterruptedException fail) {
709	<	fail("Unexpected InterruptedException");
710	<	}
1176	>	String blockerClassName(Thread thread) {
1177	>	ThreadInfo threadInfo; LockInfo lockInfo;
1178	>	if ((threadInfo = THREAD_MXBEAN.getThreadInfo(thread.getId(), 0)) != null
1179	>	&& (lockInfo = threadInfo.getLockInfo()) != null)
1180	>	return lockInfo.getClassName();
1181	>	return null;
1182		}
1183
1184		/**
#	Line 748 | Line 1219 | public class JSR166TestCase extends Test
1219		}
1220
1221		/**
1222	+	* The maximum number of consecutive spurious wakeups we should
1223	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1224	+	*/
1225	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1226	+
1227	+	/**
1228		* The number of elements to place in collections, arrays, etc.
1229		*/
1230		public static final int SIZE = 20;
#	Line 851 | Line 1328 | public class JSR166TestCase extends Test
1328		}
1329		public void refresh() {}
1330		public String toString() {
1331	<	List<Permission> ps = new ArrayList<Permission>();
1331	>	List<Permission> ps = new ArrayList<>();
1332		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1333		ps.add(e.nextElement());
1334		return "AdjustablePolicy with permissions " + ps;
#	Line 879 | Line 1356 | public class JSR166TestCase extends Test
1356
1357		/**
1358		* Sleeps until the given time has elapsed.
1359	<	* Throws AssertionFailedError if interrupted.
1359	>	* Throws AssertionError if interrupted.
1360		*/
1361	<	void sleep(long millis) {
1361	>	static void sleep(long millis) {
1362		try {
1363		delay(millis);
1364		} catch (InterruptedException fail) {
1365	<	AssertionFailedError afe =
889	<	new AssertionFailedError("Unexpected InterruptedException");
890	<	afe.initCause(fail);
891	<	throw afe;
1365	>	throw new AssertionError("Unexpected InterruptedException", fail);
1366		}
1367		}
1368
1369		/**
1370		* Spin-waits up to the specified number of milliseconds for the given
1371		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1372	+	* @param waitingForGodot if non-null, an additional condition to satisfy
1373		*/
1374	<	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1375	<	long startTime = System.nanoTime();
1376	<	for (;;) {
1377	<	Thread.State s = thread.getState();
1378	<	if (s == Thread.State.BLOCKED ||
1379	<	s == Thread.State.WAITING ||
1380	<	s == Thread.State.TIMED_WAITING)
1381	<	return;
1382	<	else if (s == Thread.State.TERMINATED)
1374	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1375	>	Callable<Boolean> waitingForGodot) {
1376	>	for (long startTime = 0L;;) {
1377	>	switch (thread.getState()) {
1378	>	default: break;
1379	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1380	>	try {
1381	>	if (waitingForGodot == null || waitingForGodot.call())
1382	>	return;
1383	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1384	>	break;
1385	>	case TERMINATED:
1386		fail("Unexpected thread termination");
1387	+	}
1388	+
1389	+	if (startTime == 0L)
1390	+	startTime = System.nanoTime();
1391		else if (millisElapsedSince(startTime) > timeoutMillis) {
1392	<	threadAssertTrue(thread.isAlive());
1393	<	return;
1392	>	assertTrue(thread.isAlive());
1393	>	if (waitingForGodot == null
1394	>	|| thread.getState() == Thread.State.RUNNABLE)
1395	>	fail("timed out waiting for thread to enter wait state");
1396	>	else
1397	>	fail("timed out waiting for condition, thread state="
1398	>	+ thread.getState());
1399		}
1400		Thread.yield();
1401		}
1402		}
1403
1404		/**
1405	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1406	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1405	>	* Spin-waits up to the specified number of milliseconds for the given
1406	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1407	>	*/
1408	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1409	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1410	>	}
1411	>
1412	>	/**
1413	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1414	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1415		*/
1416		void waitForThreadToEnterWaitState(Thread thread) {
1417	<	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1417	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1418	>	}
1419	>
1420	>	/**
1421	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1422	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1423	>	* and additionally satisfy the given condition.
1424	>	*/
1425	>	void waitForThreadToEnterWaitState(Thread thread,
1426	>	Callable<Boolean> waitingForGodot) {
1427	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1428	>	}
1429	>
1430	>	/**
1431	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the current thread to
1432	>	* be interrupted.  Clears the interrupt status before returning.
1433	>	*/
1434	>	void awaitInterrupted() {
1435	>	for (long startTime = 0L; !Thread.interrupted(); ) {
1436	>	if (startTime == 0L)
1437	>	startTime = System.nanoTime();
1438	>	else if (millisElapsedSince(startTime) > LONG_DELAY_MS)
1439	>	fail("timed out waiting for thread interrupt");
1440	>	Thread.yield();
1441	>	}
1442		}
1443
1444		/**
#	Line 931 | Line 1450 | public class JSR166TestCase extends Test
1450		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1451		}
1452
934	–	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
935	–	//         long startTime = System.nanoTime();
936	–	//         try {
937	–	//             r.run();
938	–	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
939	–	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
940	–	//             throw new AssertionFailedError("did not return promptly");
941	–	//     }
942	–
943	–	//     void assertTerminatesPromptly(Runnable r) {
944	–	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
945	–	//     }
946	–
1453		/**
1454		* Checks that timed f.get() returns the expected value, and does not
1455		* wait for the timeout to elapse before returning.
1456		*/
1457		<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1458		long startTime = System.nanoTime();
1459	+	T actual = null;
1460		try {
1461	<	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1461	>	actual = f.get(timeoutMillis, MILLISECONDS);
1462		} catch (Throwable fail) { threadUnexpectedException(fail); }
1463	+	assertEquals(expectedValue, actual);
1464		if (millisElapsedSince(startTime) > timeoutMillis/2)
1465	<	throw new AssertionFailedError("timed get did not return promptly");
1465	>	throw new AssertionError("timed get did not return promptly");
1466		}
1467
1468		<T> void checkTimedGet(Future<T> f, T expectedValue) {
#	Line 972 | Line 1480 | public class JSR166TestCase extends Test
1480		}
1481
1482		/**
1483	+	* Returns a new started daemon Thread running the given action,
1484	+	* wrapped in a CheckedRunnable.
1485	+	*/
1486	+	Thread newStartedThread(Action action) {
1487	+	return newStartedThread(checkedRunnable(action));
1488	+	}
1489	+
1490	+	/**
1491		* Waits for the specified time (in milliseconds) for the thread
1492		* to terminate (using {@link Thread#join(long)}), else interrupts
1493		* the thread (in the hope that it may terminate later) and fails.
1494		*/
1495	<	void awaitTermination(Thread t, long timeoutMillis) {
1495	>	void awaitTermination(Thread thread, long timeoutMillis) {
1496		try {
1497	<	t.join(timeoutMillis);
1497	>	thread.join(timeoutMillis);
1498		} catch (InterruptedException fail) {
1499		threadUnexpectedException(fail);
1500	<	} finally {
1501	<	if (t.getState() != Thread.State.TERMINATED) {
1502	<	t.interrupt();
1503	<	fail("Test timed out");
1500	>	}
1501	>	if (thread.getState() != Thread.State.TERMINATED) {
1502	>	String detail = String.format(
1503	>	"timed out waiting for thread to terminate, thread=%s, state=%s" ,
1504	>	thread, thread.getState());
1505	>	try {
1506	>	threadFail(detail);
1507	>	} finally {
1508	>	// Interrupt thread __after__ having reported its stack trace
1509	>	thread.interrupt();
1510		}
1511		}
1512		}
#	Line 1012 | Line 1534 | public class JSR166TestCase extends Test
1534		}
1535		}
1536
1537	<	public abstract class RunnableShouldThrow implements Runnable {
1538	<	protected abstract void realRun() throws Throwable;
1539	<
1540	<	final Class<?> exceptionClass;
1541	<
1020	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1021	<	this.exceptionClass = exceptionClass;
1022	<	}
1023	<
1024	<	public final void run() {
1025	<	try {
1026	<	realRun();
1027	<	threadShouldThrow(exceptionClass.getSimpleName());
1028	<	} catch (Throwable t) {
1029	<	if (! exceptionClass.isInstance(t))
1030	<	threadUnexpectedException(t);
1031	<	}
1032	<	}
1537	>	Runnable checkedRunnable(Action action) {
1538	>	return new CheckedRunnable() {
1539	>	public void realRun() throws Throwable {
1540	>	action.run();
1541	>	}};
1542		}
1543
1544		public abstract class ThreadShouldThrow extends Thread {
#	Line 1044 | Line 1553 | public class JSR166TestCase extends Test
1553		public final void run() {
1554		try {
1555		realRun();
1047	–	threadShouldThrow(exceptionClass.getSimpleName());
1556		} catch (Throwable t) {
1557		if (! exceptionClass.isInstance(t))
1558		threadUnexpectedException(t);
1559	+	return;
1560		}
1561	+	threadShouldThrow(exceptionClass.getSimpleName());
1562		}
1563		}
1564
#	Line 1058 | Line 1568 | public class JSR166TestCase extends Test
1568		public final void run() {
1569		try {
1570		realRun();
1061	–	threadShouldThrow("InterruptedException");
1571		} catch (InterruptedException success) {
1572		threadAssertFalse(Thread.interrupted());
1573	+	return;
1574		} catch (Throwable fail) {
1575		threadUnexpectedException(fail);
1576		}
1577	+	threadShouldThrow("InterruptedException");
1578		}
1579		}
1580
#	Line 1075 | Line 1586 | public class JSR166TestCase extends Test
1586		return realCall();
1587		} catch (Throwable fail) {
1588		threadUnexpectedException(fail);
1078	–	return null;
1589		}
1590	<	}
1081	<	}
1082	<
1083	<	public abstract class CheckedInterruptedCallable<T>
1084	<	implements Callable<T> {
1085	<	protected abstract T realCall() throws Throwable;
1086	<
1087	<	public final T call() {
1088	<	try {
1089	<	T result = realCall();
1090	<	threadShouldThrow("InterruptedException");
1091	<	return result;
1092	<	} catch (InterruptedException success) {
1093	<	threadAssertFalse(Thread.interrupted());
1094	<	} catch (Throwable fail) {
1095	<	threadUnexpectedException(fail);
1096	<	}
1097	<	return null;
1590	>	throw new AssertionError("unreached");
1591		}
1592		}
1593
#	Line 1109 | Line 1602 | public class JSR166TestCase extends Test
1602		public static final String TEST_STRING = "a test string";
1603
1604		public static class StringTask implements Callable<String> {
1605	<	public String call() { return TEST_STRING; }
1605	>	final String value;
1606	>	public StringTask() { this(TEST_STRING); }
1607	>	public StringTask(String value) { this.value = value; }
1608	>	public String call() { return value; }
1609		}
1610
1611		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1122 | Line 1618 | public class JSR166TestCase extends Test
1618		}};
1619		}
1620
1621	<	public Runnable awaiter(final CountDownLatch latch) {
1621	>	public Runnable countDowner(final CountDownLatch latch) {
1622		return new CheckedRunnable() {
1623		public void realRun() throws InterruptedException {
1624	<	await(latch);
1624	>	latch.countDown();
1625		}};
1626		}
1627
1628	<	public void await(CountDownLatch latch) {
1628	>	class LatchAwaiter extends CheckedRunnable {
1629	>	static final int NEW = 0;
1630	>	static final int RUNNING = 1;
1631	>	static final int DONE = 2;
1632	>	final CountDownLatch latch;
1633	>	int state = NEW;
1634	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1635	>	public void realRun() throws InterruptedException {
1636	>	state = 1;
1637	>	await(latch);
1638	>	state = 2;
1639	>	}
1640	>	}
1641	>
1642	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1643	>	return new LatchAwaiter(latch);
1644	>	}
1645	>
1646	>	public void await(CountDownLatch latch, long timeoutMillis) {
1647	>	boolean timedOut = false;
1648		try {
1649	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1649	>	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1650		} catch (Throwable fail) {
1651		threadUnexpectedException(fail);
1652		}
1653	+	if (timedOut)
1654	+	fail("timed out waiting for CountDownLatch for "
1655	+	+ (timeoutMillis/1000) + " sec");
1656	+	}
1657	+
1658	+	public void await(CountDownLatch latch) {
1659	+	await(latch, LONG_DELAY_MS);
1660		}
1661
1662		public void await(Semaphore semaphore) {
1663	+	boolean timedOut = false;
1664	+	try {
1665	+	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1666	+	} catch (Throwable fail) {
1667	+	threadUnexpectedException(fail);
1668	+	}
1669	+	if (timedOut)
1670	+	fail("timed out waiting for Semaphore for "
1671	+	+ (LONG_DELAY_MS/1000) + " sec");
1672	+	}
1673	+
1674	+	public void await(CyclicBarrier barrier) {
1675		try {
1676	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1676	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1677		} catch (Throwable fail) {
1678		threadUnexpectedException(fail);
1679		}
#	Line 1159 | Line 1693 | public class JSR166TestCase extends Test
1693		//         long startTime = System.nanoTime();
1694		//         while (!flag.get()) {
1695		//             if (millisElapsedSince(startTime) > timeoutMillis)
1696	<	//                 throw new AssertionFailedError("timed out");
1696	>	//                 throw new AssertionError("timed out");
1697		//             Thread.yield();
1698		//         }
1699		//     }
#	Line 1168 | Line 1702 | public class JSR166TestCase extends Test
1702		public String call() { throw new NullPointerException(); }
1703		}
1704
1171	–	public static class CallableOne implements Callable<Integer> {
1172	–	public Integer call() { return one; }
1173	–	}
1174	–
1175	–	public class ShortRunnable extends CheckedRunnable {
1176	–	protected void realRun() throws Throwable {
1177	–	delay(SHORT_DELAY_MS);
1178	–	}
1179	–	}
1180	–
1181	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1182	–	protected void realRun() throws InterruptedException {
1183	–	delay(SHORT_DELAY_MS);
1184	–	}
1185	–	}
1186	–
1187	–	public class SmallRunnable extends CheckedRunnable {
1188	–	protected void realRun() throws Throwable {
1189	–	delay(SMALL_DELAY_MS);
1190	–	}
1191	–	}
1192	–
1193	–	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1194	–	protected void realRun() {
1195	–	try {
1196	–	delay(SMALL_DELAY_MS);
1197	–	} catch (InterruptedException ok) {}
1198	–	}
1199	–	}
1200	–
1201	–	public class SmallCallable extends CheckedCallable {
1202	–	protected Object realCall() throws InterruptedException {
1203	–	delay(SMALL_DELAY_MS);
1204	–	return Boolean.TRUE;
1205	–	}
1206	–	}
1207	–
1208	–	public class MediumRunnable extends CheckedRunnable {
1209	–	protected void realRun() throws Throwable {
1210	–	delay(MEDIUM_DELAY_MS);
1211	–	}
1212	–	}
1213	–
1214	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1215	–	protected void realRun() throws InterruptedException {
1216	–	delay(MEDIUM_DELAY_MS);
1217	–	}
1218	–	}
1219	–
1705		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1706		return new CheckedRunnable() {
1707		protected void realRun() {
#	Line 1226 | Line 1711 | public class JSR166TestCase extends Test
1711		}};
1712		}
1713
1229	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1230	–	protected void realRun() {
1231	–	try {
1232	–	delay(MEDIUM_DELAY_MS);
1233	–	} catch (InterruptedException ok) {}
1234	–	}
1235	–	}
1236	–
1237	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1238	–	protected void realRun() {
1239	–	try {
1240	–	delay(LONG_DELAY_MS);
1241	–	} catch (InterruptedException ok) {}
1242	–	}
1243	–	}
1244	–
1714		/**
1715		* For use as ThreadFactory in constructors
1716		*/
#	Line 1255 | Line 1724 | public class JSR166TestCase extends Test
1724		boolean isDone();
1725		}
1726
1258	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1259	–	return new TrackedRunnable() {
1260	–	private volatile boolean done = false;
1261	–	public boolean isDone() { return done; }
1262	–	public void run() {
1263	–	try {
1264	–	delay(timeoutMillis);
1265	–	done = true;
1266	–	} catch (InterruptedException ok) {}
1267	–	}
1268	–	};
1269	–	}
1270	–
1271	–	public static class TrackedShortRunnable implements Runnable {
1272	–	public volatile boolean done = false;
1273	–	public void run() {
1274	–	try {
1275	–	delay(SHORT_DELAY_MS);
1276	–	done = true;
1277	–	} catch (InterruptedException ok) {}
1278	–	}
1279	–	}
1280	–
1281	–	public static class TrackedSmallRunnable implements Runnable {
1282	–	public volatile boolean done = false;
1283	–	public void run() {
1284	–	try {
1285	–	delay(SMALL_DELAY_MS);
1286	–	done = true;
1287	–	} catch (InterruptedException ok) {}
1288	–	}
1289	–	}
1290	–
1291	–	public static class TrackedMediumRunnable implements Runnable {
1292	–	public volatile boolean done = false;
1293	–	public void run() {
1294	–	try {
1295	–	delay(MEDIUM_DELAY_MS);
1296	–	done = true;
1297	–	} catch (InterruptedException ok) {}
1298	–	}
1299	–	}
1300	–
1301	–	public static class TrackedLongRunnable implements Runnable {
1302	–	public volatile boolean done = false;
1303	–	public void run() {
1304	–	try {
1305	–	delay(LONG_DELAY_MS);
1306	–	done = true;
1307	–	} catch (InterruptedException ok) {}
1308	–	}
1309	–	}
1310	–
1727		public static class TrackedNoOpRunnable implements Runnable {
1728		public volatile boolean done = false;
1729		public void run() {
#	Line 1315 | Line 1731 | public class JSR166TestCase extends Test
1731		}
1732		}
1733
1318	–	public static class TrackedCallable implements Callable {
1319	–	public volatile boolean done = false;
1320	–	public Object call() {
1321	–	try {
1322	–	delay(SMALL_DELAY_MS);
1323	–	done = true;
1324	–	} catch (InterruptedException ok) {}
1325	–	return Boolean.TRUE;
1326	–	}
1327	–	}
1328	–
1734		/**
1735		* Analog of CheckedRunnable for RecursiveAction
1736		*/
#	Line 1352 | Line 1757 | public class JSR166TestCase extends Test
1757		return realCompute();
1758		} catch (Throwable fail) {
1759		threadUnexpectedException(fail);
1355	–	return null;
1760		}
1761	+	throw new AssertionError("unreached");
1762		}
1763		}
1764
#	Line 1367 | Line 1772 | public class JSR166TestCase extends Test
1772
1773		/**
1774		* A CyclicBarrier that uses timed await and fails with
1775	<	* AssertionFailedErrors instead of throwing checked exceptions.
1775	>	* AssertionErrors instead of throwing checked exceptions.
1776		*/
1777	<	public class CheckedBarrier extends CyclicBarrier {
1777	>	public static class CheckedBarrier extends CyclicBarrier {
1778		public CheckedBarrier(int parties) { super(parties); }
1779
1780		public int await() {
1781		try {
1782	<	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1782	>	return super.await(LONGER_DELAY_MS, MILLISECONDS);
1783		} catch (TimeoutException timedOut) {
1784	<	throw new AssertionFailedError("timed out");
1784	>	throw new AssertionError("timed out");
1785		} catch (Exception fail) {
1786	<	AssertionFailedError afe =
1382	<	new AssertionFailedError("Unexpected exception: " + fail);
1383	<	afe.initCause(fail);
1384	<	throw afe;
1786	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1787		}
1788		}
1789		}
#	Line 1392 | Line 1794 | public class JSR166TestCase extends Test
1794		assertEquals(0, q.size());
1795		assertNull(q.peek());
1796		assertNull(q.poll());
1797	<	assertNull(q.poll(0, MILLISECONDS));
1797	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1798		assertEquals(q.toString(), "[]");
1799		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1800		assertFalse(q.iterator().hasNext());
#	Line 1433 | Line 1835 | public class JSR166TestCase extends Test
1835		}
1836		}
1837
1838	+	void assertImmutable(Object o) {
1839	+	if (o instanceof Collection) {
1840	+	assertThrows(
1841	+	UnsupportedOperationException.class,
1842	+	() -> ((Collection) o).add(null));
1843	+	}
1844	+	}
1845	+
1846		@SuppressWarnings("unchecked")
1847		<T> T serialClone(T o) {
1848	+	T clone = null;
1849		try {
1850		ObjectInputStream ois = new ObjectInputStream
1851		(new ByteArrayInputStream(serialBytes(o)));
1852	<	T clone = (T) ois.readObject();
1442	<	assertSame(o.getClass(), clone.getClass());
1443	<	return clone;
1852	>	clone = (T) ois.readObject();
1853		} catch (Throwable fail) {
1854		threadUnexpectedException(fail);
1855	+	}
1856	+	if (o == clone) assertImmutable(o);
1857	+	else assertSame(o.getClass(), clone.getClass());
1858	+	return clone;
1859	+	}
1860	+
1861	+	/**
1862	+	* A version of serialClone that leaves error handling (for
1863	+	* e.g. NotSerializableException) up to the caller.
1864	+	*/
1865	+	@SuppressWarnings("unchecked")
1866	+	<T> T serialClonePossiblyFailing(T o)
1867	+	throws ReflectiveOperationException, java.io.IOException {
1868	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1869	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1870	+	oos.writeObject(o);
1871	+	oos.flush();
1872	+	oos.close();
1873	+	ObjectInputStream ois = new ObjectInputStream
1874	+	(new ByteArrayInputStream(bos.toByteArray()));
1875	+	T clone = (T) ois.readObject();
1876	+	if (o == clone) assertImmutable(o);
1877	+	else assertSame(o.getClass(), clone.getClass());
1878	+	return clone;
1879	+	}
1880	+
1881	+	/**
1882	+	* If o implements Cloneable and has a public clone method,
1883	+	* returns a clone of o, else null.
1884	+	*/
1885	+	@SuppressWarnings("unchecked")
1886	+	<T> T cloneableClone(T o) {
1887	+	if (!(o instanceof Cloneable)) return null;
1888	+	final T clone;
1889	+	try {
1890	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1891	+	} catch (NoSuchMethodException ok) {
1892		return null;
1893	+	} catch (ReflectiveOperationException unexpected) {
1894	+	throw new Error(unexpected);
1895		}
1896	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1897	+	assertSame(o.getClass(), clone.getClass());
1898	+	return clone;
1899		}
1900
1901		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1902	<	Runnable... throwingActions) {
1903	<	for (Runnable throwingAction : throwingActions) {
1902	>	Action... throwingActions) {
1903	>	for (Action throwingAction : throwingActions) {
1904		boolean threw = false;
1905		try { throwingAction.run(); }
1906		catch (Throwable t) {
1907		threw = true;
1908	<	if (!expectedExceptionClass.isInstance(t)) {
1909	<	AssertionFailedError afe =
1910	<	new AssertionFailedError
1911	<	("Expected " + expectedExceptionClass.getName() +
1912	<	", got " + t.getClass().getName());
1462	<	afe.initCause(t);
1463	<	threadUnexpectedException(afe);
1464	<	}
1908	>	if (!expectedExceptionClass.isInstance(t))
1909	>	throw new AssertionError(
1910	>	"Expected " + expectedExceptionClass.getName() +
1911	>	", got " + t.getClass().getName(),
1912	>	t);
1913		}
1914		if (!threw)
1915		shouldThrow(expectedExceptionClass.getName());
#	Line 1475 | Line 1923 | public class JSR166TestCase extends Test
1923		} catch (NoSuchElementException success) {}
1924		assertFalse(it.hasNext());
1925		}
1926	+
1927	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1928	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1929	+	}
1930	+
1931	+	public Runnable runnableThrowing(final RuntimeException ex) {
1932	+	return new Runnable() { public void run() { throw ex; }};
1933	+	}
1934	+
1935	+	/** A reusable thread pool to be shared by tests. */
1936	+	static final ExecutorService cachedThreadPool =
1937	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1938	+	1000L, MILLISECONDS,
1939	+	new SynchronousQueue<Runnable>());
1940	+
1941	+	static <T> void shuffle(T[] array) {
1942	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1943	+	}
1944	+
1945	+	/**
1946	+	* Returns the same String as would be returned by {@link
1947	+	* Object#toString}, whether or not the given object's class
1948	+	* overrides toString().
1949	+	*
1950	+	* @see System#identityHashCode
1951	+	*/
1952	+	static String identityString(Object x) {
1953	+	return x.getClass().getName()
1954	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1955	+	}
1956	+
1957	+	// --- Shared assertions for Executor tests ---
1958	+
1959	+	/**
1960	+	* Returns maximum number of tasks that can be submitted to given
1961	+	* pool (with bounded queue) before saturation (when submission
1962	+	* throws RejectedExecutionException).
1963	+	*/
1964	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1965	+	BlockingQueue<Runnable> q = pool.getQueue();
1966	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1967	+	}
1968	+
1969	+	@SuppressWarnings("FutureReturnValueIgnored")
1970	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1971	+	try {
1972	+	e.execute((Runnable) null);
1973	+	shouldThrow();
1974	+	} catch (NullPointerException success) {}
1975	+
1976	+	if (! (e instanceof ExecutorService)) return;
1977	+	ExecutorService es = (ExecutorService) e;
1978	+	try {
1979	+	es.submit((Runnable) null);
1980	+	shouldThrow();
1981	+	} catch (NullPointerException success) {}
1982	+	try {
1983	+	es.submit((Runnable) null, Boolean.TRUE);
1984	+	shouldThrow();
1985	+	} catch (NullPointerException success) {}
1986	+	try {
1987	+	es.submit((Callable) null);
1988	+	shouldThrow();
1989	+	} catch (NullPointerException success) {}
1990	+
1991	+	if (! (e instanceof ScheduledExecutorService)) return;
1992	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1993	+	try {
1994	+	ses.schedule((Runnable) null,
1995	+	randomTimeout(), randomTimeUnit());
1996	+	shouldThrow();
1997	+	} catch (NullPointerException success) {}
1998	+	try {
1999	+	ses.schedule((Callable) null,
2000	+	randomTimeout(), randomTimeUnit());
2001	+	shouldThrow();
2002	+	} catch (NullPointerException success) {}
2003	+	try {
2004	+	ses.scheduleAtFixedRate((Runnable) null,
2005	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2006	+	shouldThrow();
2007	+	} catch (NullPointerException success) {}
2008	+	try {
2009	+	ses.scheduleWithFixedDelay((Runnable) null,
2010	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2011	+	shouldThrow();
2012	+	} catch (NullPointerException success) {}
2013	+	}
2014	+
2015	+	void setRejectedExecutionHandler(
2016	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
2017	+	p.setRejectedExecutionHandler(handler);
2018	+	assertSame(handler, p.getRejectedExecutionHandler());
2019	+	}
2020	+
2021	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
2022	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
2023	+	final long savedTaskCount = p.getTaskCount();
2024	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
2025	+	final int savedQueueSize = p.getQueue().size();
2026	+	final boolean stock = (p.getClass().getClassLoader() == null);
2027	+
2028	+	Runnable r = () -> {};
2029	+	Callable<Boolean> c = () -> Boolean.TRUE;
2030	+
2031	+	class Recorder implements RejectedExecutionHandler {
2032	+	public volatile Runnable r = null;
2033	+	public volatile ThreadPoolExecutor p = null;
2034	+	public void reset() { r = null; p = null; }
2035	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2036	+	assertNull(this.r);
2037	+	assertNull(this.p);
2038	+	this.r = r;
2039	+	this.p = p;
2040	+	}
2041	+	}
2042	+
2043	+	// check custom handler is invoked exactly once per task
2044	+	Recorder recorder = new Recorder();
2045	+	setRejectedExecutionHandler(p, recorder);
2046	+	for (int i = 2; i--> 0; ) {
2047	+	recorder.reset();
2048	+	p.execute(r);
2049	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2050	+	assertSame(r, recorder.r);
2051	+	assertSame(p, recorder.p);
2052	+
2053	+	recorder.reset();
2054	+	assertFalse(p.submit(r).isDone());
2055	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2056	+	assertSame(p, recorder.p);
2057	+
2058	+	recorder.reset();
2059	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2060	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2061	+	assertSame(p, recorder.p);
2062	+
2063	+	recorder.reset();
2064	+	assertFalse(p.submit(c).isDone());
2065	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2066	+	assertSame(p, recorder.p);
2067	+
2068	+	if (p instanceof ScheduledExecutorService) {
2069	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2070	+	ScheduledFuture<?> future;
2071	+
2072	+	recorder.reset();
2073	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2074	+	assertFalse(future.isDone());
2075	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2076	+	assertSame(p, recorder.p);
2077	+
2078	+	recorder.reset();
2079	+	future = s.schedule(c, 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.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2086	+	assertFalse(future.isDone());
2087	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2088	+	assertSame(p, recorder.p);
2089	+
2090	+	recorder.reset();
2091	+	future = s.scheduleWithFixedDelay(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	+	}
2097	+
2098	+	// Checking our custom handler above should be sufficient, but
2099	+	// we add some integration tests of standard handlers.
2100	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2101	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2102	+
2103	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2104	+	try {
2105	+	p.execute(setThread);
2106	+	shouldThrow();
2107	+	} catch (RejectedExecutionException success) {}
2108	+	assertNull(thread.get());
2109	+
2110	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2111	+	p.execute(setThread);
2112	+	assertNull(thread.get());
2113	+
2114	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2115	+	p.execute(setThread);
2116	+	if (p.isShutdown())
2117	+	assertNull(thread.get());
2118	+	else
2119	+	assertSame(Thread.currentThread(), thread.get());
2120	+
2121	+	setRejectedExecutionHandler(p, savedHandler);
2122	+
2123	+	// check that pool was not perturbed by handlers
2124	+	assertEquals(savedTaskCount, p.getTaskCount());
2125	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2126	+	assertEquals(savedQueueSize, p.getQueue().size());
2127	+	}
2128	+
2129	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2130	+	assertEquals(x, y);
2131	+	assertEquals(y, x);
2132	+	assertEquals(x.isEmpty(), y.isEmpty());
2133	+	assertEquals(x.size(), y.size());
2134	+	if (x instanceof List) {
2135	+	assertEquals(x.toString(), y.toString());
2136	+	}
2137	+	if (x instanceof List || x instanceof Set) {
2138	+	assertEquals(x.hashCode(), y.hashCode());
2139	+	}
2140	+	if (x instanceof List || x instanceof Deque) {
2141	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2142	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2143	+	y.toArray(new Object[0])));
2144	+	}
2145	+	}
2146	+
2147	+	/**
2148	+	* A weaker form of assertCollectionsEquals which does not insist
2149	+	* that the two collections satisfy Object#equals(Object), since
2150	+	* they may use identity semantics as Deques do.
2151	+	*/
2152	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2153	+	if (x instanceof List || x instanceof Set)
2154	+	assertCollectionsEquals(x, y);
2155	+	else {
2156	+	assertEquals(x.isEmpty(), y.isEmpty());
2157	+	assertEquals(x.size(), y.size());
2158	+	assertEquals(new HashSet(x), new HashSet(y));
2159	+	if (x instanceof Deque) {
2160	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2161	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2162	+	y.toArray(new Object[0])));
2163	+	}
2164	+	}
2165	+	}
2166		}

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