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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.138 by jsr166, Fri Sep 4 19:35:46 2015 UTC vs.
Revision 1.238 by jsr166, Mon Dec 11 00:27:08 2017 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 15 | Line 50 | 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;
#	Line 27 | Line 63 | 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;
#	Line 37 | Line 75 | import java.util.concurrent.BlockingQueu
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
#	Line 65 | Line 115 | import junit.framework.TestSuite;
115		*
116		* <ol>
117		*
118	<	* <li> All assertions in code running in generated threads must use
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
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 {@code
132		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 87 | Line 137 | import junit.framework.TestSuite;
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
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.</li>
145	>	* using Executors.
146		*
147		* </ol>
148		*
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
108	<	* isolation.</li>
157	>	* cover multiple methods when they cannot be tested in isolation.
158		*
159	<	* <li> The documentation style for testcases is to provide as javadoc
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 {@code main} 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		*/
#	Line 168 | Line 217 | public class JSR166TestCase extends Test
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	+	* 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
#	Line 183 | Line 270 | public class JSR166TestCase extends Test
270		return (regex == null) ? null : Pattern.compile(regex);
271		}
272
273	<	protected void runTest() throws Throwable {
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	<	for (int i = 0; i < runsPerTest; i++) {
324	<	if (profileTests)
325	<	runTestProfiled();
326	<	else
327	<	super.runTest();
328	<	}
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	<	// Warmup run, notably to trigger all needed classloading.
338	<	super.runTest();
201	<	long t0 = System.nanoTime();
202	<	try {
337	>	for (int i = 0; i < 2; i++) {
338	>	long startTime = System.nanoTime();
339		super.runTest();
340	<	} finally {
341	<	long elapsedMillis = millisElapsedSince(t0);
342	<	if (elapsedMillis >= profileThreshold)
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		}
#	Line 215 | Line 354 | public class JSR166TestCase extends Test
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.
#	Line 226 | Line 393 | public class JSR166TestCase extends Test
393		System.setSecurityManager(new SecurityManager());
394		}
395		for (int i = 0; i < suiteRuns; i++) {
396	<	TestResult result = junit.textui.TestRunner.run(suite);
396	>	TestResult result = newPithyTestRunner().doRun(suite);
397		if (!result.wasSuccessful())
398		System.exit(1);
399		System.gc();
#	Line 278 | Line 445 | public class JSR166TestCase extends Test
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
286	<	// As of 2015-09, java9 still uses 52.0 class file version
287	<	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
288	<	}
289	<	public static boolean atLeastJava10() {
290	<	return JAVA_CLASS_VERSION >= 54.0
291	<	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
292	<	}
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()  { return JAVA_CLASS_VERSION >= 53.0; }
452	>	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
453
454		/**
455		* Collects all JSR166 unit tests as one suite.
#	Line 310 | Line 470 | public class JSR166TestCase extends Test
470		AbstractQueuedLongSynchronizerTest.suite(),
471		ArrayBlockingQueueTest.suite(),
472		ArrayDequeTest.suite(),
473	+	ArrayListTest.suite(),
474		AtomicBooleanTest.suite(),
475		AtomicIntegerArrayTest.suite(),
476		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 332 | Line 493 | public class JSR166TestCase extends Test
493		CopyOnWriteArrayListTest.suite(),
494		CopyOnWriteArraySetTest.suite(),
495		CountDownLatchTest.suite(),
496	+	CountedCompleterTest.suite(),
497		CyclicBarrierTest.suite(),
498		DelayQueueTest.suite(),
499		EntryTest.suite(),
#	Line 360 | Line 522 | public class JSR166TestCase extends Test
522		TreeMapTest.suite(),
523		TreeSetTest.suite(),
524		TreeSubMapTest.suite(),
525	<	TreeSubSetTest.suite());
525	>	TreeSubSetTest.suite(),
526	>	VectorTest.suite());
527
528		// Java8+ test classes
529		if (atLeastJava8()) {
530		String[] java8TestClassNames = {
531	+	"ArrayDeque8Test",
532		"Atomic8Test",
533		"CompletableFutureTest",
534		"ConcurrentHashMap8Test",
535	<	"CountedCompleterTest",
535	>	"CountedCompleter8Test",
536		"DoubleAccumulatorTest",
537		"DoubleAdderTest",
538		"ForkJoinPool8Test",
539		"ForkJoinTask8Test",
540	+	"HashMapTest",
541	+	"LinkedBlockingDeque8Test",
542	+	"LinkedBlockingQueue8Test",
543		"LongAccumulatorTest",
544		"LongAdderTest",
545		"SplittableRandomTest",
546		"StampedLockTest",
547	+	"SubmissionPublisherTest",
548		"ThreadLocalRandom8Test",
549	+	"TimeUnit8Test",
550		};
551		addNamedTestClasses(suite, java8TestClassNames);
552		}
#	Line 385 | Line 554 | public class JSR166TestCase extends Test
554		// Java9+ test classes
555		if (atLeastJava9()) {
556		String[] java9TestClassNames = {
557	<	// Currently empty
557	>	"AtomicBoolean9Test",
558	>	"AtomicInteger9Test",
559	>	"AtomicIntegerArray9Test",
560	>	"AtomicLong9Test",
561	>	"AtomicLongArray9Test",
562	>	"AtomicReference9Test",
563	>	"AtomicReferenceArray9Test",
564	>	"ExecutorCompletionService9Test",
565	>	"ForkJoinPool9Test",
566		};
567		addNamedTestClasses(suite, java9TestClassNames);
568		}
#	Line 396 | Line 573 | public class JSR166TestCase extends Test
573		/** Returns list of junit-style test method names in given class. */
574		public static ArrayList<String> testMethodNames(Class<?> testClass) {
575		Method[] methods = testClass.getDeclaredMethods();
576	<	ArrayList<String> names = new ArrayList<String>(methods.length);
576	>	ArrayList<String> names = new ArrayList<>(methods.length);
577		for (Method method : methods) {
578		if (method.getName().startsWith("test")
579		&& Modifier.isPublic(method.getModifiers())
#	Line 452 | Line 629 | public class JSR166TestCase extends Test
629		} else {
630		return new TestSuite();
631		}
455	–
632		}
633
634		// Delays for timing-dependent tests, in milliseconds.
#	Line 462 | Line 638 | public class JSR166TestCase extends Test
638		public static long MEDIUM_DELAY_MS;
639		public static long LONG_DELAY_MS;
640
641	+	private static final long RANDOM_TIMEOUT;
642	+	private static final long RANDOM_EXPIRED_TIMEOUT;
643	+	private static final TimeUnit RANDOM_TIMEUNIT;
644	+	static {
645	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
646	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
647	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
648	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
649	+	TimeUnit[] timeUnits = TimeUnit.values();
650	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
651	+	}
652	+
653	+	/**
654	+	* Returns a timeout for use when any value at all will do.
655	+	*/
656	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
657	+
658	+	/**
659	+	* Returns a timeout that means "no waiting", i.e. not positive.
660	+	*/
661	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
662	+
663		/**
664	<	* Returns the shortest timed delay. This could
665	<	* be reimplemented to use for example a Property.
664	>	* Returns a random non-null TimeUnit.
665	>	*/
666	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
667	>
668	>	/**
669	>	* Returns the shortest timed delay. This can be scaled up for
670	>	* slow machines using the jsr166.delay.factor system property,
671	>	* or via jtreg's -timeoutFactor: flag.
672	>	* http://openjdk.java.net/jtreg/command-help.html
673		*/
674		protected long getShortDelay() {
675	<	return 50;
675	>	return (long) (50 * delayFactor);
676		}
677
678		/**
#	Line 480 | Line 685 | public class JSR166TestCase extends Test
685		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
686		}
687
688	+	private static final long TIMEOUT_DELAY_MS
689	+	= (long) (12.0 * Math.cbrt(delayFactor));
690	+
691		/**
692	<	* Returns a timeout in milliseconds to be used in tests that
693	<	* verify that operations block or time out.
692	>	* Returns a timeout in milliseconds to be used in tests that verify
693	>	* that operations block or time out.  We want this to be longer
694	>	* than the OS scheduling quantum, but not too long, so don't scale
695	>	* linearly with delayFactor; we use "crazy" cube root instead.
696		*/
697	<	long timeoutMillis() {
698	<	return SHORT_DELAY_MS / 4;
697	>	static long timeoutMillis() {
698	>	return TIMEOUT_DELAY_MS;
699		}
700
701		/**
#	Line 501 | Line 711 | public class JSR166TestCase extends Test
711		* The first exception encountered if any threadAssertXXX method fails.
712		*/
713		private final AtomicReference<Throwable> threadFailure
714	<	= new AtomicReference<Throwable>(null);
714	>	= new AtomicReference<>(null);
715
716		/**
717		* Records an exception so that it can be rethrown later in the test
#	Line 510 | Line 720 | public class JSR166TestCase extends Test
720		* the same test have no effect.
721		*/
722		public void threadRecordFailure(Throwable t) {
723	+	System.err.println(t);
724	+	dumpTestThreads();
725		threadFailure.compareAndSet(null, t);
726		}
727
#	Line 517 | Line 729 | public class JSR166TestCase extends Test
729		setDelays();
730		}
731
732	+	void tearDownFail(String format, Object... args) {
733	+	String msg = toString() + ": " + String.format(format, args);
734	+	System.err.println(msg);
735	+	dumpTestThreads();
736	+	throw new AssertionFailedError(msg);
737	+	}
738	+
739		/**
740		* Extra checks that get done for all test cases.
741		*
#	Line 544 | Line 763 | public class JSR166TestCase extends Test
763		}
764
765		if (Thread.interrupted())
766	<	throw new AssertionFailedError("interrupt status set in main thread");
766	>	tearDownFail("interrupt status set in main thread");
767
768		checkForkJoinPoolThreadLeaks();
769		}
770
771		/**
772	<	* Finds missing try { ... } finally { joinPool(e); }
772	>	* Finds missing PoolCleaners
773		*/
774		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
775	<	Thread[] survivors = new Thread[5];
775	>	Thread[] survivors = new Thread[7];
776		int count = Thread.enumerate(survivors);
777		for (int i = 0; i < count; i++) {
778		Thread thread = survivors[i];
#	Line 561 | Line 780 | public class JSR166TestCase extends Test
780		if (name.startsWith("ForkJoinPool-")) {
781		// give thread some time to terminate
782		thread.join(LONG_DELAY_MS);
783	<	if (!thread.isAlive()) continue;
784	<	throw new AssertionFailedError
785	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
567	<	toString(), name));
783	>	if (thread.isAlive())
784	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
785	>	thread);
786		}
787		}
788	+
789	+	if (!ForkJoinPool.commonPool()
790	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
791	+	tearDownFail("ForkJoin common pool thread stuck");
792		}
793
794		/**
#	Line 579 | Line 801 | public class JSR166TestCase extends Test
801		fail(reason);
802		} catch (AssertionFailedError t) {
803		threadRecordFailure(t);
804	<	fail(reason);
804	>	throw t;
805		}
806		}
807
#	Line 706 | Line 928 | public class JSR166TestCase extends Test
928		/**
929		* Delays, via Thread.sleep, for the given millisecond delay, but
930		* if the sleep is shorter than specified, may re-sleep or yield
931	<	* until time elapses.
931	>	* until time elapses.  Ensures that the given time, as measured
932	>	* by System.nanoTime(), has elapsed.
933		*/
934		static void delay(long millis) throws InterruptedException {
935	<	long startTime = System.nanoTime();
936	<	long ns = millis * 1000 * 1000;
937	<	for (;;) {
935	>	long nanos = millis * (1000 * 1000);
936	>	final long wakeupTime = System.nanoTime() + nanos;
937	>	do {
938		if (millis > 0L)
939		Thread.sleep(millis);
940		else // too short to sleep
941		Thread.yield();
942	<	long d = ns - (System.nanoTime() - startTime);
943	<	if (d > 0L)
944	<	millis = d / (1000 * 1000);
945	<	else
946	<	break;
942	>	nanos = wakeupTime - System.nanoTime();
943	>	millis = nanos / (1000 * 1000);
944	>	} while (nanos >= 0L);
945	>	}
946	>
947	>	/**
948	>	* Allows use of try-with-resources with per-test thread pools.
949	>	*/
950	>	class PoolCleaner implements AutoCloseable {
951	>	private final ExecutorService pool;
952	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
953	>	public void close() { joinPool(pool); }
954	>	}
955	>
956	>	/**
957	>	* An extension of PoolCleaner that has an action to release the pool.
958	>	*/
959	>	class PoolCleanerWithReleaser extends PoolCleaner {
960	>	private final Runnable releaser;
961	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
962	>	super(pool);
963	>	this.releaser = releaser;
964		}
965	+	public void close() {
966	+	try {
967	+	releaser.run();
968	+	} finally {
969	+	super.close();
970	+	}
971	+	}
972	+	}
973	+
974	+	PoolCleaner cleaner(ExecutorService pool) {
975	+	return new PoolCleaner(pool);
976	+	}
977	+
978	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
979	+	return new PoolCleanerWithReleaser(pool, releaser);
980	+	}
981	+
982	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
983	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
984	+	}
985	+
986	+	Runnable releaser(final CountDownLatch latch) {
987	+	return new Runnable() { public void run() {
988	+	do { latch.countDown(); }
989	+	while (latch.getCount() > 0);
990	+	}};
991	+	}
992	+
993	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
994	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
995	+	}
996	+
997	+	Runnable releaser(final AtomicBoolean flag) {
998	+	return new Runnable() { public void run() { flag.set(true); }};
999		}
1000
1001		/**
1002		* Waits out termination of a thread pool or fails doing so.
1003		*/
1004	<	void joinPool(ExecutorService exec) {
1004	>	void joinPool(ExecutorService pool) {
1005		try {
1006	<	exec.shutdown();
1007	<	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
1008	<	fail("ExecutorService " + exec +
1009	<	" did not terminate in a timely manner");
1006	>	pool.shutdown();
1007	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1008	>	try {
1009	>	threadFail("ExecutorService " + pool +
1010	>	" did not terminate in a timely manner");
1011	>	} finally {
1012	>	// last resort, for the benefit of subsequent tests
1013	>	pool.shutdownNow();
1014	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1015	>	}
1016	>	}
1017		} catch (SecurityException ok) {
1018		// Allowed in case test doesn't have privs
1019		} catch (InterruptedException fail) {
1020	<	fail("Unexpected InterruptedException");
1020	>	threadFail("Unexpected InterruptedException");
1021		}
1022		}
1023
1024		/**
1025	<	* A debugging tool to print all stack traces, as jstack does.
1025	>	* Like Runnable, but with the freedom to throw anything.
1026	>	* junit folks had the same idea:
1027	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1028		*/
1029	<	static void printAllStackTraces() {
747	<	for (ThreadInfo info :
748	<	ManagementFactory.getThreadMXBean()
749	<	.dumpAllThreads(true, true))
750	<	System.err.print(info);
751	<	}
1029	>	interface Action { public void run() throws Throwable; }
1030
1031		/**
1032	<	* Checks that thread does not terminate within the default
1033	<	* millisecond delay of {@code timeoutMillis()}.
1032	>	* Runs all the given actions in parallel, failing if any fail.
1033	>	* Useful for running multiple variants of tests that are
1034	>	* necessarily individually slow because they must block.
1035		*/
1036	<	void assertThreadStaysAlive(Thread thread) {
1037	<	assertThreadStaysAlive(thread, timeoutMillis());
1036	>	void testInParallel(Action ... actions) {
1037	>	ExecutorService pool = Executors.newCachedThreadPool();
1038	>	try (PoolCleaner cleaner = cleaner(pool)) {
1039	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1040	>	for (final Action action : actions)
1041	>	futures.add(pool.submit(new CheckedRunnable() {
1042	>	public void realRun() throws Throwable { action.run();}}));
1043	>	for (Future<?> future : futures)
1044	>	try {
1045	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1046	>	} catch (ExecutionException ex) {
1047	>	threadUnexpectedException(ex.getCause());
1048	>	} catch (Exception ex) {
1049	>	threadUnexpectedException(ex);
1050	>	}
1051	>	}
1052		}
1053
1054		/**
1055	<	* Checks that thread does not terminate within the given millisecond delay.
1055	>	* A debugging tool to print stack traces of most threads, as jstack does.
1056	>	* Uninteresting threads are filtered out.
1057		*/
1058	<	void assertThreadStaysAlive(Thread thread, long millis) {
1059	<	try {
1060	<	// No need to optimize the failing case via Thread.join.
1061	<	delay(millis);
1062	<	assertTrue(thread.isAlive());
1063	<	} catch (InterruptedException fail) {
1064	<	fail("Unexpected InterruptedException");
1058	>	static void dumpTestThreads() {
1059	>	SecurityManager sm = System.getSecurityManager();
1060	>	if (sm != null) {
1061	>	try {
1062	>	System.setSecurityManager(null);
1063	>	} catch (SecurityException giveUp) {
1064	>	return;
1065	>	}
1066		}
772	–	}
1067
1068	<	/**
1069	<	* Checks that the threads do not terminate within the default
1070	<	* millisecond delay of {@code timeoutMillis()}.
1071	<	*/
1072	<	void assertThreadsStayAlive(Thread... threads) {
1073	<	assertThreadsStayAlive(timeoutMillis(), threads);
1068	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1069	>	System.err.println("------ stacktrace dump start ------");
1070	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1071	>	final String name = info.getThreadName();
1072	>	String lockName;
1073	>	if ("Signal Dispatcher".equals(name))
1074	>	continue;
1075	>	if ("Reference Handler".equals(name)
1076	>	&& (lockName = info.getLockName()) != null
1077	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1078	>	continue;
1079	>	if ("Finalizer".equals(name)
1080	>	&& (lockName = info.getLockName()) != null
1081	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1082	>	continue;
1083	>	if ("checkForWedgedTest".equals(name))
1084	>	continue;
1085	>	System.err.print(info);
1086	>	}
1087	>	System.err.println("------ stacktrace dump end ------");
1088	>
1089	>	if (sm != null) System.setSecurityManager(sm);
1090		}
1091
1092		/**
1093	<	* Checks that the threads do not terminate within the given millisecond delay.
1093	>	* Checks that thread eventually enters the expected blocked thread state.
1094		*/
1095	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1096	<	try {
1097	<	// No need to optimize the failing case via Thread.join.
1098	<	delay(millis);
1099	<	for (Thread thread : threads)
1100	<	assertTrue(thread.isAlive());
1101	<	} catch (InterruptedException fail) {
1102	<	fail("Unexpected InterruptedException");
1095	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1096	>	// always sleep at least 1 ms, with high probability avoiding
1097	>	// transitory states
1098	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1099	>	try { delay(1); }
1100	>	catch (InterruptedException fail) {
1101	>	fail("Unexpected InterruptedException");
1102	>	}
1103	>	Thread.State s = thread.getState();
1104	>	if (s == expected)
1105	>	return;
1106	>	else if (s == Thread.State.TERMINATED)
1107	>	fail("Unexpected thread termination");
1108		}
1109	+	fail("timed out waiting for thread to enter thread state " + expected);
1110		}
1111
1112		/**
#	Line 831 | Line 1147 | public class JSR166TestCase extends Test
1147		}
1148
1149		/**
1150	+	* The maximum number of consecutive spurious wakeups we should
1151	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1152	+	*/
1153	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1154	+
1155	+	/**
1156		* The number of elements to place in collections, arrays, etc.
1157		*/
1158		public static final int SIZE = 20;
#	Line 934 | Line 1256 | public class JSR166TestCase extends Test
1256		}
1257		public void refresh() {}
1258		public String toString() {
1259	<	List<Permission> ps = new ArrayList<Permission>();
1259	>	List<Permission> ps = new ArrayList<>();
1260		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1261		ps.add(e.nextElement());
1262		return "AdjustablePolicy with permissions " + ps;
#	Line 964 | Line 1286 | public class JSR166TestCase extends Test
1286		* Sleeps until the given time has elapsed.
1287		* Throws AssertionFailedError if interrupted.
1288		*/
1289	<	void sleep(long millis) {
1289	>	static void sleep(long millis) {
1290		try {
1291		delay(millis);
1292		} catch (InterruptedException fail) {
#	Line 980 | Line 1302 | public class JSR166TestCase extends Test
1302		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1303		*/
1304		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1305	<	long startTime = System.nanoTime();
1305	>	long startTime = 0L;
1306		for (;;) {
1307		Thread.State s = thread.getState();
1308		if (s == Thread.State.BLOCKED ||
#	Line 989 | Line 1311 | public class JSR166TestCase extends Test
1311		return;
1312		else if (s == Thread.State.TERMINATED)
1313		fail("Unexpected thread termination");
1314	+	else if (startTime == 0L)
1315	+	startTime = System.nanoTime();
1316		else if (millisElapsedSince(startTime) > timeoutMillis) {
1317		threadAssertTrue(thread.isAlive());
1318	<	return;
1318	>	fail("timed out waiting for thread to enter wait state");
1319	>	}
1320	>	Thread.yield();
1321	>	}
1322	>	}
1323	>
1324	>	/**
1325	>	* Spin-waits up to the specified number of milliseconds for the given
1326	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1327	>	* and additionally satisfy the given condition.
1328	>	*/
1329	>	void waitForThreadToEnterWaitState(
1330	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1331	>	long startTime = 0L;
1332	>	for (;;) {
1333	>	Thread.State s = thread.getState();
1334	>	if (s == Thread.State.BLOCKED ||
1335	>	s == Thread.State.WAITING ||
1336	>	s == Thread.State.TIMED_WAITING) {
1337	>	try {
1338	>	if (waitingForGodot.call())
1339	>	return;
1340	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1341	>	}
1342	>	else if (s == Thread.State.TERMINATED)
1343	>	fail("Unexpected thread termination");
1344	>	else if (startTime == 0L)
1345	>	startTime = System.nanoTime();
1346	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1347	>	threadAssertTrue(thread.isAlive());
1348	>	fail("timed out waiting for thread to enter wait state");
1349		}
1350		Thread.yield();
1351		}
1352		}
1353
1354		/**
1355	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1356	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1355	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1356	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1357		*/
1358		void waitForThreadToEnterWaitState(Thread thread) {
1359		waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1360		}
1361
1362		/**
1363	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1364	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1365	+	* and additionally satisfy the given condition.
1366	+	*/
1367	+	void waitForThreadToEnterWaitState(
1368	+	Thread thread, Callable<Boolean> waitingForGodot) {
1369	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1370	+	}
1371	+
1372	+	/**
1373		* Returns the number of milliseconds since time given by
1374		* startNanoTime, which must have been previously returned from a
1375		* call to {@link System#nanoTime()}.
#	Line 1067 | Line 1431 | public class JSR166TestCase extends Test
1431		} finally {
1432		if (t.getState() != Thread.State.TERMINATED) {
1433		t.interrupt();
1434	<	fail("Test timed out");
1434	>	threadFail("timed out waiting for thread to terminate");
1435		}
1436		}
1437		}
#	Line 1192 | Line 1556 | public class JSR166TestCase extends Test
1556		public static final String TEST_STRING = "a test string";
1557
1558		public static class StringTask implements Callable<String> {
1559	<	public String call() { return TEST_STRING; }
1559	>	final String value;
1560	>	public StringTask() { this(TEST_STRING); }
1561	>	public StringTask(String value) { this.value = value; }
1562	>	public String call() { return value; }
1563		}
1564
1565		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1205 | Line 1572 | public class JSR166TestCase extends Test
1572		}};
1573		}
1574
1575	<	public Runnable awaiter(final CountDownLatch latch) {
1575	>	public Runnable countDowner(final CountDownLatch latch) {
1576		return new CheckedRunnable() {
1577		public void realRun() throws InterruptedException {
1578	<	await(latch);
1578	>	latch.countDown();
1579		}};
1580		}
1581
1582	<	public void await(CountDownLatch latch) {
1582	>	class LatchAwaiter extends CheckedRunnable {
1583	>	static final int NEW = 0;
1584	>	static final int RUNNING = 1;
1585	>	static final int DONE = 2;
1586	>	final CountDownLatch latch;
1587	>	int state = NEW;
1588	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1589	>	public void realRun() throws InterruptedException {
1590	>	state = 1;
1591	>	await(latch);
1592	>	state = 2;
1593	>	}
1594	>	}
1595	>
1596	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1597	>	return new LatchAwaiter(latch);
1598	>	}
1599	>
1600	>	public void await(CountDownLatch latch, long timeoutMillis) {
1601		try {
1602	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1602	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1603	>	fail("timed out waiting for CountDownLatch for "
1604	>	+ (timeoutMillis/1000) + " sec");
1605		} catch (Throwable fail) {
1606		threadUnexpectedException(fail);
1607		}
1608		}
1609
1610	+	public void await(CountDownLatch latch) {
1611	+	await(latch, LONG_DELAY_MS);
1612	+	}
1613	+
1614		public void await(Semaphore semaphore) {
1615		try {
1616	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1616	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1617	>	fail("timed out waiting for Semaphore for "
1618	>	+ (LONG_DELAY_MS/1000) + " sec");
1619	>	} catch (Throwable fail) {
1620	>	threadUnexpectedException(fail);
1621	>	}
1622	>	}
1623	>
1624	>	public void await(CyclicBarrier barrier) {
1625	>	try {
1626	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1627		} catch (Throwable fail) {
1628		threadUnexpectedException(fail);
1629		}
#	Line 1251 | Line 1652 | public class JSR166TestCase extends Test
1652		public String call() { throw new NullPointerException(); }
1653		}
1654
1254	–	public static class CallableOne implements Callable<Integer> {
1255	–	public Integer call() { return one; }
1256	–	}
1257	–
1258	–	public class ShortRunnable extends CheckedRunnable {
1259	–	protected void realRun() throws Throwable {
1260	–	delay(SHORT_DELAY_MS);
1261	–	}
1262	–	}
1263	–
1264	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1265	–	protected void realRun() throws InterruptedException {
1266	–	delay(SHORT_DELAY_MS);
1267	–	}
1268	–	}
1269	–
1270	–	public class SmallRunnable extends CheckedRunnable {
1271	–	protected void realRun() throws Throwable {
1272	–	delay(SMALL_DELAY_MS);
1273	–	}
1274	–	}
1275	–
1655		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1656		protected void realRun() {
1657		try {
#	Line 1281 | Line 1660 | public class JSR166TestCase extends Test
1660		}
1661		}
1662
1284	–	public class SmallCallable extends CheckedCallable {
1285	–	protected Object realCall() throws InterruptedException {
1286	–	delay(SMALL_DELAY_MS);
1287	–	return Boolean.TRUE;
1288	–	}
1289	–	}
1290	–
1291	–	public class MediumRunnable extends CheckedRunnable {
1292	–	protected void realRun() throws Throwable {
1293	–	delay(MEDIUM_DELAY_MS);
1294	–	}
1295	–	}
1296	–
1297	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1298	–	protected void realRun() throws InterruptedException {
1299	–	delay(MEDIUM_DELAY_MS);
1300	–	}
1301	–	}
1302	–
1663		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1664		return new CheckedRunnable() {
1665		protected void realRun() {
#	Line 1309 | Line 1669 | public class JSR166TestCase extends Test
1669		}};
1670		}
1671
1312	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1313	–	protected void realRun() {
1314	–	try {
1315	–	delay(MEDIUM_DELAY_MS);
1316	–	} catch (InterruptedException ok) {}
1317	–	}
1318	–	}
1319	–
1320	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1321	–	protected void realRun() {
1322	–	try {
1323	–	delay(LONG_DELAY_MS);
1324	–	} catch (InterruptedException ok) {}
1325	–	}
1326	–	}
1327	–
1672		/**
1673		* For use as ThreadFactory in constructors
1674		*/
#	Line 1338 | Line 1682 | public class JSR166TestCase extends Test
1682		boolean isDone();
1683		}
1684
1341	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1342	–	return new TrackedRunnable() {
1343	–	private volatile boolean done = false;
1344	–	public boolean isDone() { return done; }
1345	–	public void run() {
1346	–	try {
1347	–	delay(timeoutMillis);
1348	–	done = true;
1349	–	} catch (InterruptedException ok) {}
1350	–	}
1351	–	};
1352	–	}
1353	–
1354	–	public static class TrackedShortRunnable implements Runnable {
1355	–	public volatile boolean done = false;
1356	–	public void run() {
1357	–	try {
1358	–	delay(SHORT_DELAY_MS);
1359	–	done = true;
1360	–	} catch (InterruptedException ok) {}
1361	–	}
1362	–	}
1363	–
1364	–	public static class TrackedSmallRunnable implements Runnable {
1365	–	public volatile boolean done = false;
1366	–	public void run() {
1367	–	try {
1368	–	delay(SMALL_DELAY_MS);
1369	–	done = true;
1370	–	} catch (InterruptedException ok) {}
1371	–	}
1372	–	}
1373	–
1374	–	public static class TrackedMediumRunnable implements Runnable {
1375	–	public volatile boolean done = false;
1376	–	public void run() {
1377	–	try {
1378	–	delay(MEDIUM_DELAY_MS);
1379	–	done = true;
1380	–	} catch (InterruptedException ok) {}
1381	–	}
1382	–	}
1383	–
1384	–	public static class TrackedLongRunnable implements Runnable {
1385	–	public volatile boolean done = false;
1386	–	public void run() {
1387	–	try {
1388	–	delay(LONG_DELAY_MS);
1389	–	done = true;
1390	–	} catch (InterruptedException ok) {}
1391	–	}
1392	–	}
1393	–
1685		public static class TrackedNoOpRunnable implements Runnable {
1686		public volatile boolean done = false;
1687		public void run() {
#	Line 1398 | Line 1689 | public class JSR166TestCase extends Test
1689		}
1690		}
1691
1401	–	public static class TrackedCallable implements Callable {
1402	–	public volatile boolean done = false;
1403	–	public Object call() {
1404	–	try {
1405	–	delay(SMALL_DELAY_MS);
1406	–	done = true;
1407	–	} catch (InterruptedException ok) {}
1408	–	return Boolean.TRUE;
1409	–	}
1410	–	}
1411	–
1692		/**
1693		* Analog of CheckedRunnable for RecursiveAction
1694		*/
#	Line 1452 | Line 1732 | public class JSR166TestCase extends Test
1732		* A CyclicBarrier that uses timed await and fails with
1733		* AssertionFailedErrors instead of throwing checked exceptions.
1734		*/
1735	<	public class CheckedBarrier extends CyclicBarrier {
1735	>	public static class CheckedBarrier extends CyclicBarrier {
1736		public CheckedBarrier(int parties) { super(parties); }
1737
1738		public int await() {
#	Line 1475 | Line 1755 | public class JSR166TestCase extends Test
1755		assertEquals(0, q.size());
1756		assertNull(q.peek());
1757		assertNull(q.poll());
1758	<	assertNull(q.poll(0, MILLISECONDS));
1758	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1759		assertEquals(q.toString(), "[]");
1760		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1761		assertFalse(q.iterator().hasNext());
#	Line 1516 | Line 1796 | public class JSR166TestCase extends Test
1796		}
1797		}
1798
1799	+	void assertImmutable(final Object o) {
1800	+	if (o instanceof Collection) {
1801	+	assertThrows(
1802	+	UnsupportedOperationException.class,
1803	+	new Runnable() { public void run() {
1804	+	((Collection) o).add(null);}});
1805	+	}
1806	+	}
1807	+
1808		@SuppressWarnings("unchecked")
1809		<T> T serialClone(T o) {
1810		try {
1811		ObjectInputStream ois = new ObjectInputStream
1812		(new ByteArrayInputStream(serialBytes(o)));
1813		T clone = (T) ois.readObject();
1814	+	if (o == clone) assertImmutable(o);
1815		assertSame(o.getClass(), clone.getClass());
1816		return clone;
1817		} catch (Throwable fail) {
#	Line 1530 | Line 1820 | public class JSR166TestCase extends Test
1820		}
1821		}
1822
1823	+	/**
1824	+	* A version of serialClone that leaves error handling (for
1825	+	* e.g. NotSerializableException) up to the caller.
1826	+	*/
1827	+	@SuppressWarnings("unchecked")
1828	+	<T> T serialClonePossiblyFailing(T o)
1829	+	throws ReflectiveOperationException, java.io.IOException {
1830	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1831	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1832	+	oos.writeObject(o);
1833	+	oos.flush();
1834	+	oos.close();
1835	+	ObjectInputStream ois = new ObjectInputStream
1836	+	(new ByteArrayInputStream(bos.toByteArray()));
1837	+	T clone = (T) ois.readObject();
1838	+	if (o == clone) assertImmutable(o);
1839	+	assertSame(o.getClass(), clone.getClass());
1840	+	return clone;
1841	+	}
1842	+
1843	+	/**
1844	+	* If o implements Cloneable and has a public clone method,
1845	+	* returns a clone of o, else null.
1846	+	*/
1847	+	@SuppressWarnings("unchecked")
1848	+	<T> T cloneableClone(T o) {
1849	+	if (!(o instanceof Cloneable)) return null;
1850	+	final T clone;
1851	+	try {
1852	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1853	+	} catch (NoSuchMethodException ok) {
1854	+	return null;
1855	+	} catch (ReflectiveOperationException unexpected) {
1856	+	throw new Error(unexpected);
1857	+	}
1858	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1859	+	assertSame(o.getClass(), clone.getClass());
1860	+	return clone;
1861	+	}
1862	+
1863		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1864		Runnable... throwingActions) {
1865		for (Runnable throwingAction : throwingActions) {
#	Line 1558 | Line 1888 | public class JSR166TestCase extends Test
1888		} catch (NoSuchElementException success) {}
1889		assertFalse(it.hasNext());
1890		}
1891	+
1892	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1893	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1894	+	}
1895	+
1896	+	public Runnable runnableThrowing(final RuntimeException ex) {
1897	+	return new Runnable() { public void run() { throw ex; }};
1898	+	}
1899	+
1900	+	/** A reusable thread pool to be shared by tests. */
1901	+	static final ExecutorService cachedThreadPool =
1902	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1903	+	1000L, MILLISECONDS,
1904	+	new SynchronousQueue<Runnable>());
1905	+
1906	+	static <T> void shuffle(T[] array) {
1907	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1908	+	}
1909	+
1910	+	/**
1911	+	* Returns the same String as would be returned by {@link
1912	+	* Object#toString}, whether or not the given object's class
1913	+	* overrides toString().
1914	+	*
1915	+	* @see System#identityHashCode
1916	+	*/
1917	+	static String identityString(Object x) {
1918	+	return x.getClass().getName()
1919	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1920	+	}
1921	+
1922	+	// --- Shared assertions for Executor tests ---
1923	+
1924	+	/**
1925	+	* Returns maximum number of tasks that can be submitted to given
1926	+	* pool (with bounded queue) before saturation (when submission
1927	+	* throws RejectedExecutionException).
1928	+	*/
1929	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1930	+	BlockingQueue<Runnable> q = pool.getQueue();
1931	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1932	+	}
1933	+
1934	+	@SuppressWarnings("FutureReturnValueIgnored")
1935	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1936	+	try {
1937	+	e.execute((Runnable) null);
1938	+	shouldThrow();
1939	+	} catch (NullPointerException success) {}
1940	+
1941	+	if (! (e instanceof ExecutorService)) return;
1942	+	ExecutorService es = (ExecutorService) e;
1943	+	try {
1944	+	es.submit((Runnable) null);
1945	+	shouldThrow();
1946	+	} catch (NullPointerException success) {}
1947	+	try {
1948	+	es.submit((Runnable) null, Boolean.TRUE);
1949	+	shouldThrow();
1950	+	} catch (NullPointerException success) {}
1951	+	try {
1952	+	es.submit((Callable) null);
1953	+	shouldThrow();
1954	+	} catch (NullPointerException success) {}
1955	+
1956	+	if (! (e instanceof ScheduledExecutorService)) return;
1957	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1958	+	try {
1959	+	ses.schedule((Runnable) null,
1960	+	randomTimeout(), randomTimeUnit());
1961	+	shouldThrow();
1962	+	} catch (NullPointerException success) {}
1963	+	try {
1964	+	ses.schedule((Callable) null,
1965	+	randomTimeout(), randomTimeUnit());
1966	+	shouldThrow();
1967	+	} catch (NullPointerException success) {}
1968	+	try {
1969	+	ses.scheduleAtFixedRate((Runnable) null,
1970	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1971	+	shouldThrow();
1972	+	} catch (NullPointerException success) {}
1973	+	try {
1974	+	ses.scheduleWithFixedDelay((Runnable) null,
1975	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1976	+	shouldThrow();
1977	+	} catch (NullPointerException success) {}
1978	+	}
1979	+
1980	+	void setRejectedExecutionHandler(
1981	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1982	+	p.setRejectedExecutionHandler(handler);
1983	+	assertSame(handler, p.getRejectedExecutionHandler());
1984	+	}
1985	+
1986	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1987	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1988	+	final long savedTaskCount = p.getTaskCount();
1989	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1990	+	final int savedQueueSize = p.getQueue().size();
1991	+	final boolean stock = (p.getClass().getClassLoader() == null);
1992	+
1993	+	Runnable r = () -> {};
1994	+	Callable<Boolean> c = () -> Boolean.TRUE;
1995	+
1996	+	class Recorder implements RejectedExecutionHandler {
1997	+	public volatile Runnable r = null;
1998	+	public volatile ThreadPoolExecutor p = null;
1999	+	public void reset() { r = null; p = null; }
2000	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2001	+	assertNull(this.r);
2002	+	assertNull(this.p);
2003	+	this.r = r;
2004	+	this.p = p;
2005	+	}
2006	+	}
2007	+
2008	+	// check custom handler is invoked exactly once per task
2009	+	Recorder recorder = new Recorder();
2010	+	setRejectedExecutionHandler(p, recorder);
2011	+	for (int i = 2; i--> 0; ) {
2012	+	recorder.reset();
2013	+	p.execute(r);
2014	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2015	+	assertSame(r, recorder.r);
2016	+	assertSame(p, recorder.p);
2017	+
2018	+	recorder.reset();
2019	+	assertFalse(p.submit(r).isDone());
2020	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2021	+	assertSame(p, recorder.p);
2022	+
2023	+	recorder.reset();
2024	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2025	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2026	+	assertSame(p, recorder.p);
2027	+
2028	+	recorder.reset();
2029	+	assertFalse(p.submit(c).isDone());
2030	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2031	+	assertSame(p, recorder.p);
2032	+
2033	+	if (p instanceof ScheduledExecutorService) {
2034	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2035	+	ScheduledFuture<?> future;
2036	+
2037	+	recorder.reset();
2038	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2039	+	assertFalse(future.isDone());
2040	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2041	+	assertSame(p, recorder.p);
2042	+
2043	+	recorder.reset();
2044	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2045	+	assertFalse(future.isDone());
2046	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2047	+	assertSame(p, recorder.p);
2048	+
2049	+	recorder.reset();
2050	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2051	+	assertFalse(future.isDone());
2052	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2053	+	assertSame(p, recorder.p);
2054	+
2055	+	recorder.reset();
2056	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2057	+	assertFalse(future.isDone());
2058	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2059	+	assertSame(p, recorder.p);
2060	+	}
2061	+	}
2062	+
2063	+	// Checking our custom handler above should be sufficient, but
2064	+	// we add some integration tests of standard handlers.
2065	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2066	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2067	+
2068	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2069	+	try {
2070	+	p.execute(setThread);
2071	+	shouldThrow();
2072	+	} catch (RejectedExecutionException success) {}
2073	+	assertNull(thread.get());
2074	+
2075	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2076	+	p.execute(setThread);
2077	+	assertNull(thread.get());
2078	+
2079	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2080	+	p.execute(setThread);
2081	+	if (p.isShutdown())
2082	+	assertNull(thread.get());
2083	+	else
2084	+	assertSame(Thread.currentThread(), thread.get());
2085	+
2086	+	setRejectedExecutionHandler(p, savedHandler);
2087	+
2088	+	// check that pool was not perturbed by handlers
2089	+	assertEquals(savedTaskCount, p.getTaskCount());
2090	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2091	+	assertEquals(savedQueueSize, p.getQueue().size());
2092	+	}
2093		}

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