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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.78 by jsr166, Sat May 7 19:03:26 2011 UTC vs.
Revision 1.274 by dl, Tue Mar 22 16:26:19 2022 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 < import junit.framework.*;
11 < import java.util.Arrays;
12 < import java.util.NoSuchElementException;
13 < import java.util.PropertyPermission;
14 < import java.util.concurrent.*;
15 < import java.util.concurrent.atomic.AtomicReference;
10 > /*
11 > * @test
12 > * @summary JSR-166 tck tests, in a number of variations.
13 > *          The first is the conformance testing variant,
14 > *          while others also test implementation details.
15 > * @build *
16 > * @modules java.management
17 > * @run junit/othervm/timeout=1000 JSR166TestCase
18 > * @run junit/othervm/timeout=1000
19 > *      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20 > *      --add-opens java.base/java.lang=ALL-UNNAMED
21 > *      -Djsr166.testImplementationDetails=true
22 > *      JSR166TestCase
23 > * @run junit/othervm/timeout=1000
24 > *      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25 > *      --add-opens java.base/java.lang=ALL-UNNAMED
26 > *      -Djsr166.testImplementationDetails=true
27 > *      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28 > *      JSR166TestCase
29 > * @run junit/othervm/timeout=1000
30 > *      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31 > *      --add-opens java.base/java.lang=ALL-UNNAMED
32 > *      -Djsr166.testImplementationDetails=true
33 > *      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34 > *      -Djava.util.secureRandomSeed=true
35 > *      JSR166TestCase
36 > * @run junit/othervm/timeout=1000/policy=tck.policy
37 > *      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38 > *      --add-opens java.base/java.lang=ALL-UNNAMED
39 > *      -Djsr166.testImplementationDetails=true
40 > *      JSR166TestCase
41 > */
42 >
43   import static java.util.concurrent.TimeUnit.MILLISECONDS;
44 + import static java.util.concurrent.TimeUnit.MINUTES;
45   import static java.util.concurrent.TimeUnit.NANOSECONDS;
46 +
47 + import java.io.ByteArrayInputStream;
48 + import java.io.ByteArrayOutputStream;
49 + import java.io.ObjectInputStream;
50 + import java.io.ObjectOutputStream;
51 + import java.lang.management.ManagementFactory;
52 + import java.lang.management.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 21 | Line 62 | import java.security.Permissions;
62   import java.security.Policy;
63   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.Queue;
78 + import java.util.Set;
79 + import java.util.concurrent.BlockingQueue;
80 + import java.util.concurrent.Callable;
81 + import java.util.concurrent.CountDownLatch;
82 + import java.util.concurrent.CyclicBarrier;
83 + import java.util.concurrent.ExecutionException;
84 + import java.util.concurrent.Executor;
85 + import java.util.concurrent.Executors;
86 + import java.util.concurrent.ExecutorService;
87 + import java.util.concurrent.ForkJoinPool;
88 + import java.util.concurrent.Future;
89 + import java.util.concurrent.FutureTask;
90 + import java.util.concurrent.RecursiveAction;
91 + import java.util.concurrent.RecursiveTask;
92 + import java.util.concurrent.RejectedExecutionException;
93 + import java.util.concurrent.RejectedExecutionHandler;
94 + import java.util.concurrent.Semaphore;
95 + import java.util.concurrent.ScheduledExecutorService;
96 + import java.util.concurrent.ScheduledFuture;
97 + import java.util.concurrent.SynchronousQueue;
98 + import java.util.concurrent.ThreadFactory;
99 + import java.util.concurrent.ThreadLocalRandom;
100 + import java.util.concurrent.ThreadPoolExecutor;
101 + import java.util.concurrent.TimeUnit;
102 + import java.util.concurrent.TimeoutException;
103 + import java.util.concurrent.atomic.AtomicBoolean;
104 + import java.util.concurrent.atomic.AtomicReference;
105 + import java.util.regex.Pattern;
106 +
107 + import junit.framework.Test;
108 + import junit.framework.TestCase;
109 + import junit.framework.TestResult;
110 + import junit.framework.TestSuite;
111  
112   /**
113   * Base class for JSR166 Junit TCK tests.  Defines some constants,
# Line 32 | Line 119 | import java.security.SecurityPermission;
119   *
120   * <ol>
121   *
122 < * <li> All assertions in code running in generated threads must use
123 < * the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
124 < * #threadAssertEquals}, or {@link #threadAssertNull}, (not
125 < * {@code fail}, {@code assertTrue}, etc.) It is OK (but not
126 < * particularly recommended) for other code to use these forms too.
127 < * Only the most typically used JUnit assertion methods are defined
128 < * this way, but enough to live with.</li>
122 > * <li>All code not running in the main test thread (manually spawned threads
123 > * or the common fork join pool) must be checked for failure (and completion!).
124 > * Mechanisms that can be used to ensure this are:
125 > *   <ol>
126 > *   <li>Signalling via a synchronizer like AtomicInteger or CountDownLatch
127 > *    that the task completed normally, which is checked before returning from
128 > *    the test method in the main thread.
129 > *   <li>Using the forms {@link #threadFail}, {@link #threadAssertTrue},
130 > *    or {@link #threadAssertNull}, (not {@code fail}, {@code assertTrue}, etc.)
131 > *    Only the most typically used JUnit assertion methods are defined
132 > *    this way, but enough to live with.
133 > *   <li>Recording failure explicitly using {@link #threadUnexpectedException}
134 > *    or {@link #threadRecordFailure}.
135 > *   <li>Using a wrapper like CheckedRunnable that uses one the mechanisms above.
136 > *   </ol>
137   *
138 < * <li> If you override {@link #setUp} or {@link #tearDown}, make sure
138 > * <li>If you override {@link #setUp} or {@link #tearDown}, make sure
139   * to invoke {@code super.setUp} and {@code super.tearDown} within
140   * them. These methods are used to clear and check for thread
141 < * assertion failures.</li>
141 > * assertion failures.
142   *
143   * <li>All delays and timeouts must use one of the constants {@code
144   * SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
# Line 54 | Line 149 | import java.security.SecurityPermission;
149   * is always discriminable as larger than SHORT and smaller than
150   * MEDIUM.  And so on. These constants are set to conservative values,
151   * but even so, if there is ever any doubt, they can all be increased
152 < * in one spot to rerun tests on slower platforms.</li>
152 > * in one spot to rerun tests on slower platforms.
153 > *
154 > * Class Item is used for elements of collections and related
155 > * purposes. Many tests rely on their keys being equal to ints. To
156 > * check these, methods mustEqual, mustContain, etc adapt the JUnit
157 > * assert methods to intercept ints.
158   *
159 < * <li> All threads generated must be joined inside each test case
159 > * <li>All threads generated must be joined inside each test case
160   * method (or {@code fail} to do so) before returning from the
161   * method. The {@code joinPool} method can be used to do this when
162 < * using Executors.</li>
162 > * using Executors.
163   *
164   * </ol>
165   *
166 < * <p> <b>Other notes</b>
166 > * <p><b>Other notes</b>
167   * <ul>
168   *
169 < * <li> Usually, there is one testcase method per JSR166 method
169 > * <li>Usually, there is one testcase method per JSR166 method
170   * covering "normal" operation, and then as many exception-testing
171   * methods as there are exceptions the method can throw. Sometimes
172   * there are multiple tests per JSR166 method when the different
173   * "normal" behaviors differ significantly. And sometimes testcases
174 < * cover multiple methods when they cannot be tested in
75 < * isolation.</li>
174 > * cover multiple methods when they cannot be tested in isolation.
175   *
176 < * <li> The documentation style for testcases is to provide as javadoc
176 > * <li>The documentation style for testcases is to provide as javadoc
177   * a simple sentence or two describing the property that the testcase
178   * method purports to test. The javadocs do not say anything about how
179 < * the property is tested. To find out, read the code.</li>
179 > * the property is tested. To find out, read the code.
180   *
181 < * <li> These tests are "conformance tests", and do not attempt to
181 > * <li>These tests are "conformance tests", and do not attempt to
182   * test throughput, latency, scalability or other performance factors
183   * (see the separate "jtreg" tests for a set intended to check these
184   * for the most central aspects of functionality.) So, most tests use
185   * the smallest sensible numbers of threads, collection sizes, etc
186 < * needed to check basic conformance.</li>
186 > * needed to check basic conformance.
187   *
188   * <li>The test classes currently do not declare inclusion in
189   * any particular package to simplify things for people integrating
190 < * them in TCK test suites.</li>
190 > * them in TCK test suites.
191   *
192 < * <li> As a convenience, the {@code main} of this class (JSR166TestCase)
193 < * runs all JSR166 unit tests.</li>
192 > * <li>As a convenience, the {@code main} of this class (JSR166TestCase)
193 > * runs all JSR166 unit tests.
194   *
195   * </ul>
196   */
197   public class JSR166TestCase extends TestCase {
198 +    // No longer run with custom securityManagers
199      private static final boolean useSecurityManager =
200 <        Boolean.getBoolean("jsr166.useSecurityManager");
200 >    Boolean.getBoolean("jsr166.useSecurityManager");
201  
202      protected static final boolean expensiveTests =
203          Boolean.getBoolean("jsr166.expensiveTests");
204  
205      /**
206 +     * If true, also run tests that are not part of the official tck
207 +     * because they test unspecified implementation details.
208 +     */
209 +    protected static final boolean testImplementationDetails =
210 +        Boolean.getBoolean("jsr166.testImplementationDetails");
211 +
212 +    /**
213       * If true, report on stdout all "slow" tests, that is, ones that
214       * take more than profileThreshold milliseconds to execute.
215       */
# Line 116 | Line 223 | public class JSR166TestCase extends Test
223      private static final long profileThreshold =
224          Long.getLong("jsr166.profileThreshold", 100);
225  
226 +    /**
227 +     * The number of repetitions per test (for tickling rare bugs).
228 +     */
229 +    private static final int runsPerTest =
230 +        Integer.getInteger("jsr166.runsPerTest", 1);
231 +
232 +    /**
233 +     * The number of repetitions of the test suite (for finding leaks?).
234 +     */
235 +    private static final int suiteRuns =
236 +        Integer.getInteger("jsr166.suiteRuns", 1);
237 +
238 +    /**
239 +     * Returns the value of the system property, or NaN if not defined.
240 +     */
241 +    private static float systemPropertyValue(String name) {
242 +        String floatString = System.getProperty(name);
243 +        if (floatString == null)
244 +            return Float.NaN;
245 +        try {
246 +            return Float.parseFloat(floatString);
247 +        } catch (NumberFormatException ex) {
248 +            throw new IllegalArgumentException(
249 +                String.format("Bad float value in system property %s=%s",
250 +                              name, floatString));
251 +        }
252 +    }
253 +
254 +    private static final ThreadMXBean THREAD_MXBEAN
255 +        = ManagementFactory.getThreadMXBean();
256 +
257 +    /**
258 +     * The scaling factor to apply to standard delays used in tests.
259 +     * May be initialized from any of:
260 +     * - the "jsr166.delay.factor" system property
261 +     * - the "test.timeout.factor" system property (as used by jtreg)
262 +     *   See: http://openjdk.java.net/jtreg/tag-spec.html
263 +     * - hard-coded fuzz factor when using a known slowpoke VM
264 +     */
265 +    private static final float delayFactor = delayFactor();
266 +
267 +    private static float delayFactor() {
268 +        float x;
269 +        if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
270 +            return x;
271 +        if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
272 +            return x;
273 +        String prop = System.getProperty("java.vm.version");
274 +        if (prop != null && prop.matches(".*debug.*"))
275 +            return 4.0f; // How much slower is fastdebug than product?!
276 +        return 1.0f;
277 +    }
278 +
279 +    public JSR166TestCase() { super(); }
280 +    public JSR166TestCase(String name) { super(name); }
281 +
282 +    /**
283 +     * A filter for tests to run, matching strings of the form
284 +     * methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
285 +     * Usefully combined with jsr166.runsPerTest.
286 +     */
287 +    private static final Pattern methodFilter = methodFilter();
288 +
289 +    private static Pattern methodFilter() {
290 +        String regex = System.getProperty("jsr166.methodFilter");
291 +        return (regex == null) ? null : Pattern.compile(regex);
292 +    }
293 +
294 +    // Instrumentation to debug very rare, but very annoying hung test runs.
295 +    static volatile TestCase currentTestCase;
296 +    // static volatile int currentRun = 0;
297 +    static {
298 +        Runnable wedgedTestDetector = new Runnable() { public void run() {
299 +            // Avoid spurious reports with enormous runsPerTest.
300 +            // A single test case run should never take more than 1 second.
301 +            // But let's cap it at the high end too ...
302 +            final int timeoutMinutesMin = Math.max(runsPerTest / 60, 1)
303 +                * Math.max((int) delayFactor, 1);
304 +            final int timeoutMinutes = Math.min(15, timeoutMinutesMin);
305 +            for (TestCase lastTestCase = currentTestCase;;) {
306 +                try { MINUTES.sleep(timeoutMinutes); }
307 +                catch (InterruptedException unexpected) { break; }
308 +                if (lastTestCase == currentTestCase) {
309 +                    System.err.printf(
310 +                        "Looks like we're stuck running test: %s%n",
311 +                        lastTestCase);
312 + //                     System.err.printf(
313 + //                         "Looks like we're stuck running test: %s (%d/%d)%n",
314 + //                         lastTestCase, currentRun, runsPerTest);
315 + //                     System.err.println("availableProcessors=" +
316 + //                         Runtime.getRuntime().availableProcessors());
317 + //                     System.err.printf("cpu model = %s%n", cpuModel());
318 +                    dumpTestThreads();
319 +                    // one stack dump is probably enough; more would be spam
320 +                    break;
321 +                }
322 +                lastTestCase = currentTestCase;
323 +            }}};
324 +        Thread thread = new Thread(wedgedTestDetector, "WedgedTestDetector");
325 +        thread.setDaemon(true);
326 +        thread.start();
327 +    }
328 +
329 + //     public static String cpuModel() {
330 + //         try {
331 + //             java.util.regex.Matcher matcher
332 + //               = Pattern.compile("model name\\s*: (.*)")
333 + //                 .matcher(new String(
334 + //                     java.nio.file.Files.readAllBytes(
335 + //                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
336 + //             matcher.find();
337 + //             return matcher.group(1);
338 + //         } catch (Exception ex) { return null; }
339 + //     }
340 +
341 +    public void runBare() throws Throwable {
342 +        currentTestCase = this;
343 +        if (methodFilter == null
344 +            || methodFilter.matcher(toString()).find())
345 +            super.runBare();
346 +    }
347 +
348      protected void runTest() throws Throwable {
349 <        if (profileTests)
350 <            runTestProfiled();
351 <        else
352 <            super.runTest();
349 >        for (int i = 0; i < runsPerTest; i++) {
350 >            // currentRun = i;
351 >            if (profileTests)
352 >                runTestProfiled();
353 >            else
354 >                super.runTest();
355 >        }
356      }
357  
358      protected void runTestProfiled() throws Throwable {
359 <        long t0 = System.nanoTime();
360 <        try {
359 >        for (int i = 0; i < 2; i++) {
360 >            long startTime = System.nanoTime();
361              super.runTest();
362 <        } finally {
363 <            long elapsedMillis =
364 <                (System.nanoTime() - t0) / (1000L * 1000L);
365 <            if (elapsedMillis >= profileThreshold)
366 <                System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
362 >            long elapsedMillis = millisElapsedSince(startTime);
363 >            if (elapsedMillis < profileThreshold)
364 >                break;
365 >            // Never report first run of any test; treat it as a
366 >            // warmup run, notably to trigger all needed classloading,
367 >            if (i > 0)
368 >                System.out.printf("%s: %d%n", toString(), elapsedMillis);
369          }
370      }
371  
372      /**
373 <     * Runs all JSR166 unit tests using junit.textui.TestRunner
373 >     * Runs all JSR166 unit tests using junit.textui.TestRunner.
374       */
375      public static void main(String[] args) {
376 +        main(suite(), args);
377 +    }
378 +
379 +    static class PithyResultPrinter extends junit.textui.ResultPrinter {
380 +        PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
381 +        long runTime;
382 +        public void startTest(Test test) {}
383 +        protected void printHeader(long runTime) {
384 +            this.runTime = runTime; // defer printing for later
385 +        }
386 +        protected void printFooter(TestResult result) {
387 +            if (result.wasSuccessful()) {
388 +                getWriter().println("OK (" + result.runCount() + " tests)"
389 +                    + "  Time: " + elapsedTimeAsString(runTime));
390 +            } else {
391 +                getWriter().println("Time: " + elapsedTimeAsString(runTime));
392 +                super.printFooter(result);
393 +            }
394 +        }
395 +    }
396 +
397 +    /**
398 +     * Returns a TestRunner that doesn't bother with unnecessary
399 +     * fluff, like printing a "." for each test case.
400 +     */
401 +    static junit.textui.TestRunner newPithyTestRunner() {
402 +        junit.textui.TestRunner runner = new junit.textui.TestRunner();
403 +        runner.setPrinter(new PithyResultPrinter(System.out));
404 +        return runner;
405 +    }
406 +
407 +    /**
408 +     * Runs all unit tests in the given test suite.
409 +     * Actual behavior influenced by jsr166.* system properties.
410 +     */
411 +    @SuppressWarnings("removal")
412 +    static void main(Test suite, String[] args) {
413          if (useSecurityManager) {
414              System.err.println("Setting a permissive security manager");
415              Policy.setPolicy(permissivePolicy());
416              System.setSecurityManager(new SecurityManager());
417          }
418 <        int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
419 <
420 <        Test s = suite();
421 <        for (int i = 0; i < iters; ++i) {
151 <            junit.textui.TestRunner.run(s);
418 >        for (int i = 0; i < suiteRuns; i++) {
419 >            TestResult result = newPithyTestRunner().doRun(suite);
420 >            if (!result.wasSuccessful())
421 >                System.exit(1);
422              System.gc();
423              System.runFinalization();
424          }
155        System.exit(0);
425      }
426  
427      public static TestSuite newTestSuite(Object... suiteOrClasses) {
# Line 168 | Line 437 | public class JSR166TestCase extends Test
437          return suite;
438      }
439  
440 +    public static void addNamedTestClasses(TestSuite suite,
441 +                                           String... testClassNames) {
442 +        for (String testClassName : testClassNames) {
443 +            try {
444 +                Class<?> testClass = Class.forName(testClassName);
445 +                Method m = testClass.getDeclaredMethod("suite");
446 +                suite.addTest(newTestSuite((Test)m.invoke(null)));
447 +            } catch (ReflectiveOperationException e) {
448 +                throw new AssertionError("Missing test class", e);
449 +            }
450 +        }
451 +    }
452 +
453 +    public static final double JAVA_CLASS_VERSION;
454 +    public static final String JAVA_SPECIFICATION_VERSION;
455 +    static {
456 +        try {
457 +            @SuppressWarnings("removal") double jcv =
458 +            java.security.AccessController.doPrivileged(
459 +                new java.security.PrivilegedAction<Double>() {
460 +                public Double run() {
461 +                    return Double.valueOf(System.getProperty("java.class.version"));}});
462 +            JAVA_CLASS_VERSION = jcv;
463 +            @SuppressWarnings("removal") String jsv =
464 +            java.security.AccessController.doPrivileged(
465 +                new java.security.PrivilegedAction<String>() {
466 +                public String run() {
467 +                    return System.getProperty("java.specification.version");}});
468 +            JAVA_SPECIFICATION_VERSION = jsv;
469 +        } catch (Throwable t) {
470 +            throw new Error(t);
471 +        }
472 +    }
473 +
474 +    public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
475 +    public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
476 +    public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
477 +    public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
478 +    public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
479 +    public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
480 +    public static boolean atLeastJava12() { return JAVA_CLASS_VERSION >= 56.0; }
481 +    public static boolean atLeastJava13() { return JAVA_CLASS_VERSION >= 57.0; }
482 +    public static boolean atLeastJava14() { return JAVA_CLASS_VERSION >= 58.0; }
483 +    public static boolean atLeastJava15() { return JAVA_CLASS_VERSION >= 59.0; }
484 +    public static boolean atLeastJava16() { return JAVA_CLASS_VERSION >= 60.0; }
485 +    public static boolean atLeastJava17() { return JAVA_CLASS_VERSION >= 61.0; }
486 +
487      /**
488       * Collects all JSR166 unit tests as one suite.
489       */
490      public static Test suite() {
491 <        return newTestSuite(
491 >        // Java7+ test classes
492 >        TestSuite suite = newTestSuite(
493              ForkJoinPoolTest.suite(),
494              ForkJoinTaskTest.suite(),
495              RecursiveActionTest.suite(),
# Line 186 | Line 503 | public class JSR166TestCase extends Test
503              AbstractQueuedLongSynchronizerTest.suite(),
504              ArrayBlockingQueueTest.suite(),
505              ArrayDequeTest.suite(),
506 +            ArrayListTest.suite(),
507              AtomicBooleanTest.suite(),
508              AtomicIntegerArrayTest.suite(),
509              AtomicIntegerFieldUpdaterTest.suite(),
# Line 208 | Line 526 | public class JSR166TestCase extends Test
526              CopyOnWriteArrayListTest.suite(),
527              CopyOnWriteArraySetTest.suite(),
528              CountDownLatchTest.suite(),
529 +            CountedCompleterTest.suite(),
530              CyclicBarrierTest.suite(),
531              DelayQueueTest.suite(),
532              EntryTest.suite(),
# Line 215 | Line 534 | public class JSR166TestCase extends Test
534              ExecutorsTest.suite(),
535              ExecutorCompletionServiceTest.suite(),
536              FutureTaskTest.suite(),
537 +            HashtableTest.suite(),
538              LinkedBlockingDequeTest.suite(),
539              LinkedBlockingQueueTest.suite(),
540              LinkedListTest.suite(),
# Line 236 | Line 556 | public class JSR166TestCase extends Test
556              TreeMapTest.suite(),
557              TreeSetTest.suite(),
558              TreeSubMapTest.suite(),
559 <            TreeSubSetTest.suite());
559 >            TreeSubSetTest.suite(),
560 >            VectorTest.suite());
561 >
562 >        // Java8+ test classes
563 >        if (atLeastJava8()) {
564 >            String[] java8TestClassNames = {
565 >                "ArrayDeque8Test",
566 >                "Atomic8Test",
567 >                "CompletableFutureTest",
568 >                "ConcurrentHashMap8Test",
569 >                "CountedCompleter8Test",
570 >                "DoubleAccumulatorTest",
571 >                "DoubleAdderTest",
572 >                "ForkJoinPool8Test",
573 >                "ForkJoinTask8Test",
574 >                "HashMapTest",
575 >                "LinkedBlockingDeque8Test",
576 >                "LinkedBlockingQueue8Test",
577 >                "LinkedHashMapTest",
578 >                "LongAccumulatorTest",
579 >                "LongAdderTest",
580 >                "SplittableRandomTest",
581 >                "StampedLockTest",
582 >                "SubmissionPublisherTest",
583 >                "ThreadLocalRandom8Test",
584 >                "TimeUnit8Test",
585 >            };
586 >            addNamedTestClasses(suite, java8TestClassNames);
587 >        }
588 >
589 >        // Java9+ test classes
590 >        if (atLeastJava9()) {
591 >            String[] java9TestClassNames = {
592 >                "AtomicBoolean9Test",
593 >                "AtomicInteger9Test",
594 >                "AtomicIntegerArray9Test",
595 >                "AtomicLong9Test",
596 >                "AtomicLongArray9Test",
597 >                "AtomicReference9Test",
598 >                "AtomicReferenceArray9Test",
599 >                "ExecutorCompletionService9Test",
600 >                "ForkJoinPool9Test",
601 >            };
602 >            addNamedTestClasses(suite, java9TestClassNames);
603 >        }
604 >
605 >        if (atLeastJava17()) {
606 >            String[] java17TestClassNames = {
607 >                "ForkJoinPool19Test",
608 >            };
609 >            addNamedTestClasses(suite, java17TestClassNames);
610 >        }
611 >        return suite;
612      }
613  
614 +    /** Returns list of junit-style test method names in given class. */
615 +    public static ArrayList<String> testMethodNames(Class<?> testClass) {
616 +        Method[] methods = testClass.getDeclaredMethods();
617 +        ArrayList<String> names = new ArrayList<>(methods.length);
618 +        for (Method method : methods) {
619 +            if (method.getName().startsWith("test")
620 +                && Modifier.isPublic(method.getModifiers())
621 +                // method.getParameterCount() requires jdk8+
622 +                && method.getParameterTypes().length == 0) {
623 +                names.add(method.getName());
624 +            }
625 +        }
626 +        return names;
627 +    }
628 +
629 +    /**
630 +     * Returns junit-style testSuite for the given test class, but
631 +     * parameterized by passing extra data to each test.
632 +     */
633 +    public static <ExtraData> Test parameterizedTestSuite
634 +        (Class<? extends JSR166TestCase> testClass,
635 +         Class<ExtraData> dataClass,
636 +         ExtraData data) {
637 +        try {
638 +            TestSuite suite = new TestSuite();
639 +            Constructor c =
640 +                testClass.getDeclaredConstructor(dataClass, String.class);
641 +            for (String methodName : testMethodNames(testClass))
642 +                suite.addTest((Test) c.newInstance(data, methodName));
643 +            return suite;
644 +        } catch (ReflectiveOperationException e) {
645 +            throw new AssertionError(e);
646 +        }
647 +    }
648 +
649 +    /**
650 +     * Returns junit-style testSuite for the jdk8 extension of the
651 +     * given test class, but parameterized by passing extra data to
652 +     * each test.  Uses reflection to allow compilation in jdk7.
653 +     */
654 +    public static <ExtraData> Test jdk8ParameterizedTestSuite
655 +        (Class<? extends JSR166TestCase> testClass,
656 +         Class<ExtraData> dataClass,
657 +         ExtraData data) {
658 +        if (atLeastJava8()) {
659 +            String name = testClass.getName();
660 +            String name8 = name.replaceAll("Test$", "8Test");
661 +            if (name.equals(name8)) throw new AssertionError(name);
662 +            try {
663 +                return (Test)
664 +                    Class.forName(name8)
665 +                    .getMethod("testSuite", dataClass)
666 +                    .invoke(null, data);
667 +            } catch (ReflectiveOperationException e) {
668 +                throw new AssertionError(e);
669 +            }
670 +        } else {
671 +            return new TestSuite();
672 +        }
673 +    }
674 +
675 +    // Delays for timing-dependent tests, in milliseconds.
676  
677      public static long SHORT_DELAY_MS;
678      public static long SMALL_DELAY_MS;
679      public static long MEDIUM_DELAY_MS;
680      public static long LONG_DELAY_MS;
681  
682 +    /**
683 +     * A delay significantly longer than LONG_DELAY_MS.
684 +     * Use this in a thread that is waited for via awaitTermination(Thread).
685 +     */
686 +    public static long LONGER_DELAY_MS;
687 +
688 +    private static final long RANDOM_TIMEOUT;
689 +    private static final long RANDOM_EXPIRED_TIMEOUT;
690 +    private static final TimeUnit RANDOM_TIMEUNIT;
691 +    static {
692 +        ThreadLocalRandom rnd = ThreadLocalRandom.current();
693 +        long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
694 +        RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
695 +        RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
696 +        TimeUnit[] timeUnits = TimeUnit.values();
697 +        RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
698 +    }
699  
700      /**
701 <     * Returns the shortest timed delay. This could
251 <     * be reimplemented to use for example a Property.
701 >     * Returns a timeout for use when any value at all will do.
702       */
703 <    protected long getShortDelay() {
704 <        return 50;
703 >    static long randomTimeout() { return RANDOM_TIMEOUT; }
704 >
705 >    /**
706 >     * Returns a timeout that means "no waiting", i.e. not positive.
707 >     */
708 >    static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
709 >
710 >    /**
711 >     * Returns a random non-null TimeUnit.
712 >     */
713 >    static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
714 >
715 >    /**
716 >     * Returns a random boolean; a "coin flip".
717 >     */
718 >    static boolean randomBoolean() {
719 >        return ThreadLocalRandom.current().nextBoolean();
720      }
721  
722 +    /**
723 +     * Returns a random element from given choices.
724 +     */
725 +    <T> T chooseRandomly(List<T> choices) {
726 +        return choices.get(ThreadLocalRandom.current().nextInt(choices.size()));
727 +    }
728 +
729 +    /**
730 +     * Returns a random element from given choices.
731 +     */
732 +    @SuppressWarnings("unchecked")
733 +    <T> T chooseRandomly(T... choices) {
734 +        return choices[ThreadLocalRandom.current().nextInt(choices.length)];
735 +    }
736 +
737 +    /**
738 +     * Returns the shortest timed delay. This can be scaled up for
739 +     * slow machines using the jsr166.delay.factor system property,
740 +     * or via jtreg's -timeoutFactor: flag.
741 +     * http://openjdk.java.net/jtreg/command-help.html
742 +     */
743 +    protected long getShortDelay() {
744 +        return (long) (50 * delayFactor);
745 +    }
746  
747      /**
748       * Sets delays as multiples of SHORT_DELAY.
# Line 263 | Line 752 | public class JSR166TestCase extends Test
752          SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
753          MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
754          LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
755 +        LONGER_DELAY_MS = 2 * LONG_DELAY_MS;
756 +    }
757 +
758 +    private static final long TIMEOUT_DELAY_MS
759 +        = (long) (12.0 * Math.cbrt(delayFactor));
760 +
761 +    /**
762 +     * Returns a timeout in milliseconds to be used in tests that verify
763 +     * that operations block or time out.  We want this to be longer
764 +     * than the OS scheduling quantum, but not too long, so don't scale
765 +     * linearly with delayFactor; we use "crazy" cube root instead.
766 +     */
767 +    static long timeoutMillis() {
768 +        return TIMEOUT_DELAY_MS;
769 +    }
770 +
771 +    /**
772 +     * Returns a new Date instance representing a time at least
773 +     * delayMillis milliseconds in the future.
774 +     */
775 +    Date delayedDate(long delayMillis) {
776 +        // Add 1 because currentTimeMillis is known to round into the past.
777 +        return new Date(System.currentTimeMillis() + delayMillis + 1);
778      }
779  
780      /**
781       * The first exception encountered if any threadAssertXXX method fails.
782       */
783      private final AtomicReference<Throwable> threadFailure
784 <        = new AtomicReference<Throwable>(null);
784 >        = new AtomicReference<>(null);
785  
786      /**
787       * Records an exception so that it can be rethrown later in the test
# Line 278 | Line 790 | public class JSR166TestCase extends Test
790       * the same test have no effect.
791       */
792      public void threadRecordFailure(Throwable t) {
793 <        threadFailure.compareAndSet(null, t);
793 >        System.err.println(t);
794 >        if (threadFailure.compareAndSet(null, t))
795 >            dumpTestThreads();
796      }
797  
798      public void setUp() {
799          setDelays();
800      }
801  
802 +    void tearDownFail(String format, Object... args) {
803 +        String msg = toString() + ": " + String.format(format, args);
804 +        System.err.println(msg);
805 +        dumpTestThreads();
806 +        throw new AssertionError(msg);
807 +    }
808 +
809      /**
810 +     * Extra checks that get done for all test cases.
811 +     *
812       * Triggers test case failure if any thread assertions have failed,
813       * by rethrowing, in the test harness thread, any exception recorded
814       * earlier by threadRecordFailure.
815 +     *
816 +     * Triggers test case failure if interrupt status is set in the main thread.
817       */
818      public void tearDown() throws Exception {
819          Throwable t = threadFailure.getAndSet(null);
# Line 299 | Line 824 | public class JSR166TestCase extends Test
824                  throw (RuntimeException) t;
825              else if (t instanceof Exception)
826                  throw (Exception) t;
827 <            else {
828 <                AssertionFailedError afe =
829 <                    new AssertionFailedError(t.toString());
830 <                afe.initCause(t);
831 <                throw afe;
827 >            else
828 >                throw new AssertionError(t.toString(), t);
829 >        }
830 >
831 >        if (Thread.interrupted())
832 >            tearDownFail("interrupt status set in main thread");
833 >
834 >        checkForkJoinPoolThreadLeaks();
835 >    }
836 >
837 >    /**
838 >     * Finds missing PoolCleaners
839 >     */
840 >    void checkForkJoinPoolThreadLeaks() throws InterruptedException {
841 >        Thread[] survivors = new Thread[7];
842 >        int count = Thread.enumerate(survivors);
843 >        for (int i = 0; i < count; i++) {
844 >            Thread thread = survivors[i];
845 >            String name = thread.getName();
846 >            if (name.startsWith("ForkJoinPool-")) {
847 >                // give thread some time to terminate
848 >                thread.join(LONG_DELAY_MS);
849 >                if (thread.isAlive())
850 >                    tearDownFail("Found leaked ForkJoinPool thread thread=%s",
851 >                                 thread);
852              }
853          }
854 +
855 +        if (!ForkJoinPool.commonPool()
856 +            .awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
857 +            tearDownFail("ForkJoin common pool thread stuck");
858      }
859  
860      /**
861       * Just like fail(reason), but additionally recording (using
862 <     * threadRecordFailure) any AssertionFailedError thrown, so that
863 <     * the current testcase will fail.
862 >     * threadRecordFailure) any AssertionError thrown, so that the
863 >     * current testcase will fail.
864       */
865      public void threadFail(String reason) {
866          try {
867              fail(reason);
868 <        } catch (AssertionFailedError t) {
869 <            threadRecordFailure(t);
870 <            fail(reason);
868 >        } catch (AssertionError fail) {
869 >            threadRecordFailure(fail);
870 >            throw fail;
871          }
872      }
873  
874      /**
875       * Just like assertTrue(b), but additionally recording (using
876 <     * threadRecordFailure) any AssertionFailedError thrown, so that
877 <     * the current testcase will fail.
876 >     * threadRecordFailure) any AssertionError thrown, so that the
877 >     * current testcase will fail.
878       */
879      public void threadAssertTrue(boolean b) {
880          try {
881              assertTrue(b);
882 <        } catch (AssertionFailedError t) {
883 <            threadRecordFailure(t);
884 <            throw t;
882 >        } catch (AssertionError fail) {
883 >            threadRecordFailure(fail);
884 >            throw fail;
885          }
886      }
887  
888      /**
889       * Just like assertFalse(b), but additionally recording (using
890 <     * threadRecordFailure) any AssertionFailedError thrown, so that
891 <     * the current testcase will fail.
890 >     * threadRecordFailure) any AssertionError thrown, so that the
891 >     * current testcase will fail.
892       */
893      public void threadAssertFalse(boolean b) {
894          try {
895              assertFalse(b);
896 <        } catch (AssertionFailedError t) {
897 <            threadRecordFailure(t);
898 <            throw t;
896 >        } catch (AssertionError fail) {
897 >            threadRecordFailure(fail);
898 >            throw fail;
899          }
900      }
901  
902      /**
903       * Just like assertNull(x), but additionally recording (using
904 <     * threadRecordFailure) any AssertionFailedError thrown, so that
905 <     * the current testcase will fail.
904 >     * threadRecordFailure) any AssertionError thrown, so that the
905 >     * current testcase will fail.
906       */
907      public void threadAssertNull(Object x) {
908          try {
909              assertNull(x);
910 <        } catch (AssertionFailedError t) {
911 <            threadRecordFailure(t);
912 <            throw t;
910 >        } catch (AssertionError fail) {
911 >            threadRecordFailure(fail);
912 >            throw fail;
913          }
914      }
915  
916      /**
917       * Just like assertEquals(x, y), but additionally recording (using
918 <     * threadRecordFailure) any AssertionFailedError thrown, so that
919 <     * the current testcase will fail.
918 >     * threadRecordFailure) any AssertionError thrown, so that the
919 >     * current testcase will fail.
920       */
921      public void threadAssertEquals(long x, long y) {
922          try {
923              assertEquals(x, y);
924 <        } catch (AssertionFailedError t) {
925 <            threadRecordFailure(t);
926 <            throw t;
924 >        } catch (AssertionError fail) {
925 >            threadRecordFailure(fail);
926 >            throw fail;
927          }
928      }
929  
930      /**
931       * Just like assertEquals(x, y), but additionally recording (using
932 <     * threadRecordFailure) any AssertionFailedError thrown, so that
933 <     * the current testcase will fail.
932 >     * threadRecordFailure) any AssertionError thrown, so that the
933 >     * current testcase will fail.
934       */
935      public void threadAssertEquals(Object x, Object y) {
936          try {
937              assertEquals(x, y);
938 <        } catch (AssertionFailedError t) {
939 <            threadRecordFailure(t);
940 <            throw t;
941 <        } catch (Throwable t) {
942 <            threadUnexpectedException(t);
938 >        } catch (AssertionError fail) {
939 >            threadRecordFailure(fail);
940 >            throw fail;
941 >        } catch (Throwable fail) {
942 >            threadUnexpectedException(fail);
943          }
944      }
945  
946      /**
947       * Just like assertSame(x, y), but additionally recording (using
948 <     * threadRecordFailure) any AssertionFailedError thrown, so that
949 <     * the current testcase will fail.
948 >     * threadRecordFailure) any AssertionError thrown, so that the
949 >     * current testcase will fail.
950       */
951      public void threadAssertSame(Object x, Object y) {
952          try {
953              assertSame(x, y);
954 <        } catch (AssertionFailedError t) {
955 <            threadRecordFailure(t);
956 <            throw t;
954 >        } catch (AssertionError fail) {
955 >            threadRecordFailure(fail);
956 >            throw fail;
957          }
958      }
959  
# Line 424 | Line 973 | public class JSR166TestCase extends Test
973  
974      /**
975       * Records the given exception using {@link #threadRecordFailure},
976 <     * then rethrows the exception, wrapping it in an
977 <     * AssertionFailedError if necessary.
976 >     * then rethrows the exception, wrapping it in an AssertionError
977 >     * if necessary.
978       */
979      public void threadUnexpectedException(Throwable t) {
980          threadRecordFailure(t);
# Line 434 | Line 983 | public class JSR166TestCase extends Test
983              throw (RuntimeException) t;
984          else if (t instanceof Error)
985              throw (Error) t;
986 <        else {
987 <            AssertionFailedError afe =
439 <                new AssertionFailedError("unexpected exception: " + t);
440 <            t.initCause(t);
441 <            throw afe;
442 <        }
986 >        else
987 >            throw new AssertionError("unexpected exception: " + t, t);
988      }
989  
990      /**
991 <     * Delays, via Thread.sleep for the given millisecond delay, but
991 >     * Delays, via Thread.sleep, for the given millisecond delay, but
992       * if the sleep is shorter than specified, may re-sleep or yield
993 <     * until time elapses.
993 >     * until time elapses.  Ensures that the given time, as measured
994 >     * by System.nanoTime(), has elapsed.
995       */
996 <    public static void delay(long ms) throws InterruptedException {
997 <        long startTime = System.nanoTime();
998 <        long ns = ms * 1000 * 1000;
999 <        for (;;) {
1000 <            if (ms > 0L)
1001 <                Thread.sleep(ms);
996 >    static void delay(long millis) throws InterruptedException {
997 >        long nanos = millis * (1000 * 1000);
998 >        final long wakeupTime = System.nanoTime() + nanos;
999 >        do {
1000 >            if (millis > 0L)
1001 >                Thread.sleep(millis);
1002              else // too short to sleep
1003                  Thread.yield();
1004 <            long d = ns - (System.nanoTime() - startTime);
1005 <            if (d > 0L)
1006 <                ms = d / (1000 * 1000);
1007 <            else
1008 <                break;
1004 >            nanos = wakeupTime - System.nanoTime();
1005 >            millis = nanos / (1000 * 1000);
1006 >        } while (nanos >= 0L);
1007 >    }
1008 >
1009 >    /**
1010 >     * Allows use of try-with-resources with per-test thread pools.
1011 >     */
1012 >    class PoolCleaner implements AutoCloseable {
1013 >        private final ExecutorService pool;
1014 >        public PoolCleaner(ExecutorService pool) { this.pool = pool; }
1015 >        public void close() { joinPool(pool); }
1016 >    }
1017 >
1018 >    /**
1019 >     * An extension of PoolCleaner that has an action to release the pool.
1020 >     */
1021 >    class PoolCleanerWithReleaser extends PoolCleaner {
1022 >        private final Runnable releaser;
1023 >        public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
1024 >            super(pool);
1025 >            this.releaser = releaser;
1026 >        }
1027 >        public void close() {
1028 >            try {
1029 >                releaser.run();
1030 >            } finally {
1031 >                super.close();
1032 >            }
1033          }
1034      }
1035  
1036 +    PoolCleaner cleaner(ExecutorService pool) {
1037 +        return new PoolCleaner(pool);
1038 +    }
1039 +
1040 +    PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
1041 +        return new PoolCleanerWithReleaser(pool, releaser);
1042 +    }
1043 +
1044 +    PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
1045 +        return new PoolCleanerWithReleaser(pool, releaser(latch));
1046 +    }
1047 +
1048 +    Runnable releaser(final CountDownLatch latch) {
1049 +        return new Runnable() { public void run() {
1050 +            do { latch.countDown(); }
1051 +            while (latch.getCount() > 0);
1052 +        }};
1053 +    }
1054 +
1055 +    PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1056 +        return new PoolCleanerWithReleaser(pool, releaser(flag));
1057 +    }
1058 +
1059 +    Runnable releaser(final AtomicBoolean flag) {
1060 +        return new Runnable() { public void run() { flag.set(true); }};
1061 +    }
1062 +
1063      /**
1064       * Waits out termination of a thread pool or fails doing so.
1065       */
1066 <    public void joinPool(ExecutorService exec) {
1066 >    void joinPool(ExecutorService pool) {
1067          try {
1068 <            exec.shutdown();
1069 <            assertTrue("ExecutorService did not terminate in a timely manner",
1070 <                       exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
1068 >            pool.shutdown();
1069 >            if (!pool.awaitTermination(20 * LONG_DELAY_MS, MILLISECONDS)) {
1070 >                try {
1071 >                    threadFail("ExecutorService " + pool +
1072 >                               " did not terminate in a timely manner");
1073 >                } finally {
1074 >                    // last resort, for the benefit of subsequent tests
1075 >                    pool.shutdownNow();
1076 >                    pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1077 >                }
1078 >            }
1079          } catch (SecurityException ok) {
1080              // Allowed in case test doesn't have privs
1081 <        } catch (InterruptedException ie) {
1082 <            fail("Unexpected InterruptedException");
1081 >        } catch (InterruptedException fail) {
1082 >            threadFail("Unexpected InterruptedException");
1083          }
1084      }
1085  
1086      /**
1087 <     * Checks that thread does not terminate within timeoutMillis
1088 <     * milliseconds (that is, Thread.join times out).
1087 >     * Like Runnable, but with the freedom to throw anything.
1088 >     * junit folks had the same idea:
1089 >     * http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1090 >     */
1091 >    interface Action { public void run() throws Throwable; }
1092 >
1093 >    /**
1094 >     * Runs all the given actions in parallel, failing if any fail.
1095 >     * Useful for running multiple variants of tests that are
1096 >     * necessarily individually slow because they must block.
1097       */
1098 <    public void assertThreadJoinTimesOut(Thread thread, long timeoutMillis) {
1098 >    void testInParallel(Action ... actions) {
1099 >        ExecutorService pool = Executors.newCachedThreadPool();
1100 >        try (PoolCleaner cleaner = cleaner(pool)) {
1101 >            ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1102 >            for (final Action action : actions)
1103 >                futures.add(pool.submit(new CheckedRunnable() {
1104 >                    public void realRun() throws Throwable { action.run();}}));
1105 >            for (Future<?> future : futures)
1106 >                try {
1107 >                    assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1108 >                } catch (ExecutionException ex) {
1109 >                    threadUnexpectedException(ex.getCause());
1110 >                } catch (Exception ex) {
1111 >                    threadUnexpectedException(ex);
1112 >                }
1113 >        }
1114 >    }
1115 >
1116 >    /** Returns true if thread info might be useful in a thread dump. */
1117 >    static boolean threadOfInterest(ThreadInfo info) {
1118 >        final String name = info.getThreadName();
1119 >        String lockName;
1120 >        if (name == null)
1121 >            return true;
1122 >        if (name.equals("Signal Dispatcher")
1123 >            || name.equals("WedgedTestDetector"))
1124 >            return false;
1125 >        if (name.equals("Reference Handler")) {
1126 >            // Reference Handler stacktrace changed in JDK-8156500
1127 >            StackTraceElement[] stackTrace; String methodName;
1128 >            if ((stackTrace = info.getStackTrace()) != null
1129 >                && stackTrace.length > 0
1130 >                && (methodName = stackTrace[0].getMethodName()) != null
1131 >                && methodName.equals("waitForReferencePendingList"))
1132 >                return false;
1133 >            // jdk8 Reference Handler stacktrace
1134 >            if ((lockName = info.getLockName()) != null
1135 >                && lockName.startsWith("java.lang.ref"))
1136 >                return false;
1137 >        }
1138 >        if ((name.equals("Finalizer") || name.equals("Common-Cleaner"))
1139 >            && (lockName = info.getLockName()) != null
1140 >            && lockName.startsWith("java.lang.ref"))
1141 >            return false;
1142 >        if (name.startsWith("ForkJoinPool.commonPool-worker")
1143 >            && (lockName = info.getLockName()) != null
1144 >            && lockName.startsWith("java.util.concurrent.ForkJoinPool"))
1145 >            return false;
1146 >        return true;
1147 >    }
1148 >
1149 >    /**
1150 >     * A debugging tool to print stack traces of most threads, as jstack does.
1151 >     * Uninteresting threads are filtered out.
1152 >     */
1153 >    @SuppressWarnings("removal")
1154 >    static void dumpTestThreads() {
1155 >        SecurityManager sm = System.getSecurityManager();
1156 >        if (sm != null) {
1157 >            try {
1158 >                System.setSecurityManager(null);
1159 >            } catch (SecurityException giveUp) {
1160 >                return;
1161 >            }
1162 >        }
1163 >
1164 >        System.err.println("------ stacktrace dump start ------");
1165 >        for (ThreadInfo info : THREAD_MXBEAN.dumpAllThreads(true, true))
1166 >            if (threadOfInterest(info))
1167 >                System.err.print(info);
1168 >        System.err.println("------ stacktrace dump end ------");
1169 >
1170 >        if (sm != null) System.setSecurityManager(sm);
1171 >    }
1172 >
1173 >    /**
1174 >     * Checks that thread eventually enters the expected blocked thread state.
1175 >     */
1176 >    void assertThreadBlocks(Thread thread, Thread.State expected) {
1177 >        // always sleep at least 1 ms, with high probability avoiding
1178 >        // transitory states
1179 >        for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1180 >            try { delay(1); }
1181 >            catch (InterruptedException fail) {
1182 >                throw new AssertionError("Unexpected InterruptedException", fail);
1183 >            }
1184 >            Thread.State s = thread.getState();
1185 >            if (s == expected)
1186 >                return;
1187 >            else if (s == Thread.State.TERMINATED)
1188 >                fail("Unexpected thread termination");
1189 >        }
1190 >        fail("timed out waiting for thread to enter thread state " + expected);
1191 >    }
1192 >
1193 >    /**
1194 >     * Returns the thread's blocker's class name, if any, else null.
1195 >     */
1196 >    String blockerClassName(Thread thread) {
1197 >        ThreadInfo threadInfo; LockInfo lockInfo;
1198 >        if ((threadInfo = THREAD_MXBEAN.getThreadInfo(thread.getId(), 0)) != null
1199 >            && (lockInfo = threadInfo.getLockInfo()) != null)
1200 >            return lockInfo.getClassName();
1201 >        return null;
1202 >    }
1203 >
1204 >    /**
1205 >     * Checks that future.get times out, with the default timeout of
1206 >     * {@code timeoutMillis()}.
1207 >     */
1208 >    void assertFutureTimesOut(Future<?> future) {
1209 >        assertFutureTimesOut(future, timeoutMillis());
1210 >    }
1211 >
1212 >    /**
1213 >     * Checks that future.get times out, with the given millisecond timeout.
1214 >     */
1215 >    void assertFutureTimesOut(Future<?> future, long timeoutMillis) {
1216 >        long startTime = System.nanoTime();
1217          try {
1218 <            long startTime = System.nanoTime();
1219 <            thread.join(timeoutMillis);
1220 <            assertTrue(thread.isAlive());
1221 <            assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1222 <        } catch (InterruptedException ie) {
492 <            fail("Unexpected InterruptedException");
1218 >            future.get(timeoutMillis, MILLISECONDS);
1219 >            shouldThrow();
1220 >        } catch (TimeoutException success) {
1221 >        } catch (Exception fail) {
1222 >            threadUnexpectedException(fail);
1223          }
1224 +        assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1225 +        assertFalse(future.isDone());
1226      }
1227  
1228      /**
# Line 508 | Line 1240 | public class JSR166TestCase extends Test
1240      }
1241  
1242      /**
1243 <     * The number of elements to place in collections, arrays, etc.
1243 >     * The maximum number of consecutive spurious wakeups we should
1244 >     * tolerate (from APIs like LockSupport.park) before failing a test.
1245       */
1246 <    public static final int SIZE = 20;
1246 >    static final int MAX_SPURIOUS_WAKEUPS = 10;
1247  
1248 <    // Some convenient Integer constants
1249 <
1250 <    public static final Integer zero  = new Integer(0);
1251 <    public static final Integer one   = new Integer(1);
1252 <    public static final Integer two   = new Integer(2);
520 <    public static final Integer three = new Integer(3);
521 <    public static final Integer four  = new Integer(4);
522 <    public static final Integer five  = new Integer(5);
523 <    public static final Integer six   = new Integer(6);
524 <    public static final Integer seven = new Integer(7);
525 <    public static final Integer eight = new Integer(8);
526 <    public static final Integer nine  = new Integer(9);
527 <    public static final Integer m1  = new Integer(-1);
528 <    public static final Integer m2  = new Integer(-2);
529 <    public static final Integer m3  = new Integer(-3);
530 <    public static final Integer m4  = new Integer(-4);
531 <    public static final Integer m5  = new Integer(-5);
532 <    public static final Integer m6  = new Integer(-6);
533 <    public static final Integer m10 = new Integer(-10);
1248 >    /**
1249 >     * The number of elements to place in collections, arrays, etc.
1250 >     * Must be at least ten;
1251 >     */
1252 >    public static final int SIZE = 32;
1253  
1254 +    static Item[] seqItems(int size) {
1255 +        Item[] s = new Item[size];
1256 +        for (int i = 0; i < size; ++i)
1257 +            s[i] = new Item(i);
1258 +        return s;
1259 +    }
1260 +    static Item[] negativeSeqItems(int size) {
1261 +        Item[] s = new Item[size];
1262 +        for (int i = 0; i < size; ++i)
1263 +            s[i] = new Item(-i);
1264 +        return s;
1265 +    }
1266 +
1267 +    // Many tests rely on defaultItems all being sequential nonnegative
1268 +    public static final Item[] defaultItems = seqItems(SIZE);
1269 +
1270 +    static Item itemFor(int i) { // check cache for defaultItems
1271 +        Item[] items = defaultItems;
1272 +        return (i >= 0 && i < items.length) ? items[i] : new Item(i);
1273 +    }
1274 +
1275 +    public static final Item zero  = defaultItems[0];
1276 +    public static final Item one   = defaultItems[1];
1277 +    public static final Item two   = defaultItems[2];
1278 +    public static final Item three = defaultItems[3];
1279 +    public static final Item four  = defaultItems[4];
1280 +    public static final Item five  = defaultItems[5];
1281 +    public static final Item six   = defaultItems[6];
1282 +    public static final Item seven = defaultItems[7];
1283 +    public static final Item eight = defaultItems[8];
1284 +    public static final Item nine  = defaultItems[9];
1285 +    public static final Item ten   = defaultItems[10];
1286 +
1287 +    public static final Item[] negativeItems = negativeSeqItems(SIZE);
1288 +
1289 +    public static final Item minusOne   = negativeItems[1];
1290 +    public static final Item minusTwo   = negativeItems[2];
1291 +    public static final Item minusThree = negativeItems[3];
1292 +    public static final Item minusFour  = negativeItems[4];
1293 +    public static final Item minusFive  = negativeItems[5];
1294 +    public static final Item minusSix   = negativeItems[6];
1295 +    public static final Item minusSeven = negativeItems[7];
1296 +    public static final Item minusEight = negativeItems[8];
1297 +    public static final Item minusNone  = negativeItems[9];
1298 +    public static final Item minusTen   = negativeItems[10];
1299 +
1300 +    // elements expected to be missing
1301 +    public static final Item fortytwo = new Item(42);
1302 +    public static final Item eightysix = new Item(86);
1303 +    public static final Item ninetynine = new Item(99);
1304 +
1305 +    // Interop across Item, int
1306 +
1307 +    static void mustEqual(Item x, Item y) {
1308 +        if (x != y)
1309 +            assertEquals(x.value, y.value);
1310 +    }
1311 +    static void mustEqual(Item x, int y) {
1312 +        assertEquals(x.value, y);
1313 +    }
1314 +    static void mustEqual(int x, Item y) {
1315 +        assertEquals(x, y.value);
1316 +    }
1317 +    static void mustEqual(int x, int y) {
1318 +        assertEquals(x, y);
1319 +    }
1320 +    static void mustEqual(Object x, Object y) {
1321 +        if (x != y)
1322 +            assertEquals(x, y);
1323 +    }
1324 +    static void mustEqual(int x, Object y) {
1325 +        if (y instanceof Item)
1326 +            assertEquals(x, ((Item)y).value);
1327 +        else fail();
1328 +    }
1329 +    static void mustEqual(Object x, int y) {
1330 +        if (x instanceof Item)
1331 +            assertEquals(((Item)x).value, y);
1332 +        else fail();
1333 +    }
1334 +    static void mustEqual(boolean x, boolean y) {
1335 +        assertEquals(x, y);
1336 +    }
1337 +    static void mustEqual(long x, long y) {
1338 +        assertEquals(x, y);
1339 +    }
1340 +    static void mustEqual(double x, double y) {
1341 +        assertEquals(x, y);
1342 +    }
1343 +    static void mustContain(Collection<Item> c, int i) {
1344 +        assertTrue(c.contains(itemFor(i)));
1345 +    }
1346 +    static void mustContain(Collection<Item> c, Item i) {
1347 +        assertTrue(c.contains(i));
1348 +    }
1349 +    static void mustNotContain(Collection<Item> c, int i) {
1350 +        assertFalse(c.contains(itemFor(i)));
1351 +    }
1352 +    static void mustNotContain(Collection<Item> c, Item i) {
1353 +        assertFalse(c.contains(i));
1354 +    }
1355 +    static void mustRemove(Collection<Item> c, int i) {
1356 +        assertTrue(c.remove(itemFor(i)));
1357 +    }
1358 +    static void mustRemove(Collection<Item> c, Item i) {
1359 +        assertTrue(c.remove(i));
1360 +    }
1361 +    static void mustNotRemove(Collection<Item> c, int i) {
1362 +        assertFalse(c.remove(itemFor(i)));
1363 +    }
1364 +    static void mustNotRemove(Collection<Item> c, Item i) {
1365 +        assertFalse(c.remove(i));
1366 +    }
1367 +    static void mustAdd(Collection<Item> c, int i) {
1368 +        assertTrue(c.add(itemFor(i)));
1369 +    }
1370 +    static void mustAdd(Collection<Item> c, Item i) {
1371 +        assertTrue(c.add(i));
1372 +    }
1373 +    static void mustOffer(Queue<Item> c, int i) {
1374 +        assertTrue(c.offer(itemFor(i)));
1375 +    }
1376 +    static void mustOffer(Queue<Item> c, Item i) {
1377 +        assertTrue(c.offer(i));
1378 +    }
1379  
1380      /**
1381       * Runs Runnable r with a security policy that permits precisely
# Line 540 | Line 1384 | public class JSR166TestCase extends Test
1384       * security manager.  We require that any security manager permit
1385       * getPolicy/setPolicy.
1386       */
1387 +    @SuppressWarnings("removal")
1388      public void runWithPermissions(Runnable r, Permission... permissions) {
1389          SecurityManager sm = System.getSecurityManager();
1390          if (sm == null) {
1391              r.run();
1392 +        }
1393 +        runWithSecurityManagerWithPermissions(r, permissions);
1394 +    }
1395 +
1396 +    /**
1397 +     * Runs Runnable r with a security policy that permits precisely
1398 +     * the specified permissions.  If there is no current security
1399 +     * manager, a temporary one is set for the duration of the
1400 +     * Runnable.  We require that any security manager permit
1401 +     * getPolicy/setPolicy.
1402 +     */
1403 +    @SuppressWarnings("removal")
1404 +    public void runWithSecurityManagerWithPermissions(Runnable r,
1405 +                                                      Permission... permissions) {
1406 +        if (!useSecurityManager) return;
1407 +        SecurityManager sm = System.getSecurityManager();
1408 +        if (sm == null) {
1409              Policy savedPolicy = Policy.getPolicy();
1410              try {
1411                  Policy.setPolicy(permissivePolicy());
1412                  System.setSecurityManager(new SecurityManager());
1413 <                runWithPermissions(r, permissions);
1413 >                runWithSecurityManagerWithPermissions(r, permissions);
1414              } finally {
1415                  System.setSecurityManager(null);
1416                  Policy.setPolicy(savedPolicy);
# Line 578 | Line 1440 | public class JSR166TestCase extends Test
1440       * A security policy where new permissions can be dynamically added
1441       * or all cleared.
1442       */
1443 +    @SuppressWarnings("removal")
1444      public static class AdjustablePolicy extends java.security.Policy {
1445          Permissions perms = new Permissions();
1446          AdjustablePolicy(Permission... permissions) {
# Line 596 | Line 1459 | public class JSR166TestCase extends Test
1459              return perms.implies(p);
1460          }
1461          public void refresh() {}
1462 +        public String toString() {
1463 +            List<Permission> ps = new ArrayList<>();
1464 +            for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1465 +                ps.add(e.nextElement());
1466 +            return "AdjustablePolicy with permissions " + ps;
1467 +        }
1468      }
1469  
1470      /**
1471       * Returns a policy containing all the permissions we ever need.
1472       */
1473 +    @SuppressWarnings("removal")
1474      public static Policy permissivePolicy() {
1475          return new AdjustablePolicy
1476              // Permissions j.u.c. needs directly
# Line 619 | Line 1489 | public class JSR166TestCase extends Test
1489  
1490      /**
1491       * Sleeps until the given time has elapsed.
1492 <     * Throws AssertionFailedError if interrupted.
1492 >     * Throws AssertionError if interrupted.
1493       */
1494 <    void sleep(long millis) {
1494 >    static void sleep(long millis) {
1495          try {
1496              delay(millis);
1497 <        } catch (InterruptedException ie) {
1498 <            AssertionFailedError afe =
629 <                new AssertionFailedError("Unexpected InterruptedException");
630 <            afe.initCause(ie);
631 <            throw afe;
1497 >        } catch (InterruptedException fail) {
1498 >            throw new AssertionError("Unexpected InterruptedException", fail);
1499          }
1500      }
1501  
1502      /**
1503 <     * Sleeps until the timeout has elapsed, or interrupted.
1504 <     * Does <em>NOT</em> throw InterruptedException.
1503 >     * Spin-waits up to the specified number of milliseconds for the given
1504 >     * thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1505 >     * @param waitingForGodot if non-null, an additional condition to satisfy
1506       */
1507 <    void sleepTillInterrupted(long timeoutMillis) {
1508 <        try {
1509 <            Thread.sleep(timeoutMillis);
1510 <        } catch (InterruptedException wakeup) {}
1507 >    void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1508 >                                       Callable<Boolean> waitingForGodot) {
1509 >        for (long startTime = 0L;;) {
1510 >            switch (thread.getState()) {
1511 >            default: break;
1512 >            case BLOCKED: case WAITING: case TIMED_WAITING:
1513 >                try {
1514 >                    if (waitingForGodot == null || waitingForGodot.call())
1515 >                        return;
1516 >                } catch (Throwable fail) { threadUnexpectedException(fail); }
1517 >                break;
1518 >            case TERMINATED:
1519 >                fail("Unexpected thread termination");
1520 >            }
1521 >
1522 >            if (startTime == 0L)
1523 >                startTime = System.nanoTime();
1524 >            else if (millisElapsedSince(startTime) > timeoutMillis) {
1525 >                assertTrue(thread.isAlive());
1526 >                if (waitingForGodot == null
1527 >                    || thread.getState() == Thread.State.RUNNABLE)
1528 >                    fail("timed out waiting for thread to enter wait state");
1529 >                else
1530 >                    fail("timed out waiting for condition, thread state="
1531 >                         + thread.getState());
1532 >            }
1533 >            Thread.yield();
1534 >        }
1535      }
1536  
1537      /**
1538 <     * Waits up to the specified number of milliseconds for the given
1538 >     * Spin-waits up to the specified number of milliseconds for the given
1539       * thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1540       */
1541      void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1542 <        long timeoutNanos = timeoutMillis * 1000L * 1000L;
651 <        long t0 = System.nanoTime();
652 <        for (;;) {
653 <            Thread.State s = thread.getState();
654 <            if (s == Thread.State.BLOCKED ||
655 <                s == Thread.State.WAITING ||
656 <                s == Thread.State.TIMED_WAITING)
657 <                return;
658 <            else if (s == Thread.State.TERMINATED)
659 <                fail("Unexpected thread termination");
660 <            else if (System.nanoTime() - t0 > timeoutNanos) {
661 <                threadAssertTrue(thread.isAlive());
662 <                return;
663 <            }
664 <            Thread.yield();
665 <        }
1542 >        waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1543      }
1544  
1545      /**
1546 <     * Waits up to LONG_DELAY_MS for the given thread to enter a wait
1547 <     * state: BLOCKED, WAITING, or TIMED_WAITING.
1546 >     * Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1547 >     * enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1548       */
1549      void waitForThreadToEnterWaitState(Thread thread) {
1550 <        waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1550 >        waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1551 >    }
1552 >
1553 >    /**
1554 >     * Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1555 >     * enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1556 >     * and additionally satisfy the given condition.
1557 >     */
1558 >    void waitForThreadToEnterWaitState(Thread thread,
1559 >                                       Callable<Boolean> waitingForGodot) {
1560 >        waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1561 >    }
1562 >
1563 >    /**
1564 >     * Spin-waits up to LONG_DELAY_MS milliseconds for the current thread to
1565 >     * be interrupted.  Clears the interrupt status before returning.
1566 >     */
1567 >    void awaitInterrupted() {
1568 >        for (long startTime = 0L; !Thread.interrupted(); ) {
1569 >            if (startTime == 0L)
1570 >                startTime = System.nanoTime();
1571 >            else if (millisElapsedSince(startTime) > LONG_DELAY_MS)
1572 >                fail("timed out waiting for thread interrupt");
1573 >            Thread.yield();
1574 >        }
1575      }
1576  
1577      /**
1578       * Returns the number of milliseconds since time given by
1579       * startNanoTime, which must have been previously returned from a
1580 <     * call to {@link System.nanoTime()}.
1580 >     * call to {@link System#nanoTime()}.
1581       */
1582 <    long millisElapsedSince(long startNanoTime) {
1582 >    static long millisElapsedSince(long startNanoTime) {
1583          return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1584      }
1585  
1586      /**
1587 +     * Checks that timed f.get() returns the expected value, and does not
1588 +     * wait for the timeout to elapse before returning.
1589 +     */
1590 +    <T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1591 +        long startTime = System.nanoTime();
1592 +        T actual = null;
1593 +        try {
1594 +            actual = f.get(timeoutMillis, MILLISECONDS);
1595 +        } catch (Throwable fail) { threadUnexpectedException(fail); }
1596 +        assertEquals(expectedValue, actual);
1597 +        if (millisElapsedSince(startTime) > timeoutMillis/2)
1598 +            throw new AssertionError("timed get did not return promptly");
1599 +    }
1600 +
1601 +    <T> void checkTimedGet(Future<T> f, T expectedValue) {
1602 +        checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1603 +    }
1604 +
1605 +    /**
1606       * Returns a new started daemon Thread running the given runnable.
1607       */
1608      Thread newStartedThread(Runnable runnable) {
# Line 693 | Line 1613 | public class JSR166TestCase extends Test
1613      }
1614  
1615      /**
1616 +     * Returns a new started daemon Thread running the given action,
1617 +     * wrapped in a CheckedRunnable.
1618 +     */
1619 +    Thread newStartedThread(Action action) {
1620 +        return newStartedThread(checkedRunnable(action));
1621 +    }
1622 +
1623 +    /**
1624       * Waits for the specified time (in milliseconds) for the thread
1625       * to terminate (using {@link Thread#join(long)}), else interrupts
1626       * the thread (in the hope that it may terminate later) and fails.
1627       */
1628 <    void awaitTermination(Thread t, long timeoutMillis) {
1628 >    void awaitTermination(Thread thread, long timeoutMillis) {
1629          try {
1630 <            t.join(timeoutMillis);
1631 <        } catch (InterruptedException ie) {
1632 <            threadUnexpectedException(ie);
1633 <        } finally {
1634 <            if (t.isAlive()) {
1635 <                t.interrupt();
1636 <                fail("Test timed out");
1630 >            thread.join(timeoutMillis);
1631 >        } catch (InterruptedException fail) {
1632 >            threadUnexpectedException(fail);
1633 >        }
1634 >        if (thread.getState() != Thread.State.TERMINATED) {
1635 >            String detail = String.format(
1636 >                    "timed out waiting for thread to terminate, thread=%s, state=%s" ,
1637 >                    thread, thread.getState());
1638 >            try {
1639 >                threadFail(detail);
1640 >            } finally {
1641 >                // Interrupt thread __after__ having reported its stack trace
1642 >                thread.interrupt();
1643              }
1644          }
1645      }
# Line 727 | Line 1661 | public class JSR166TestCase extends Test
1661          public final void run() {
1662              try {
1663                  realRun();
1664 <            } catch (Throwable t) {
1665 <                threadUnexpectedException(t);
1664 >            } catch (Throwable fail) {
1665 >                threadUnexpectedException(fail);
1666              }
1667          }
1668      }
1669  
1670 <    public abstract class RunnableShouldThrow implements Runnable {
1671 <        protected abstract void realRun() throws Throwable;
1672 <
1673 <        final Class<?> exceptionClass;
1674 <
741 <        <T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
742 <            this.exceptionClass = exceptionClass;
743 <        }
744 <
745 <        public final void run() {
746 <            try {
747 <                realRun();
748 <                threadShouldThrow(exceptionClass.getSimpleName());
749 <            } catch (Throwable t) {
750 <                if (! exceptionClass.isInstance(t))
751 <                    threadUnexpectedException(t);
752 <            }
753 <        }
1670 >    Runnable checkedRunnable(Action action) {
1671 >        return new CheckedRunnable() {
1672 >            public void realRun() throws Throwable {
1673 >                action.run();
1674 >            }};
1675      }
1676  
1677      public abstract class ThreadShouldThrow extends Thread {
# Line 765 | Line 1686 | public class JSR166TestCase extends Test
1686          public final void run() {
1687              try {
1688                  realRun();
768                threadShouldThrow(exceptionClass.getSimpleName());
1689              } catch (Throwable t) {
1690                  if (! exceptionClass.isInstance(t))
1691                      threadUnexpectedException(t);
1692 +                return;
1693              }
1694 +            threadShouldThrow(exceptionClass.getSimpleName());
1695          }
1696      }
1697  
# Line 779 | Line 1701 | public class JSR166TestCase extends Test
1701          public final void run() {
1702              try {
1703                  realRun();
782                threadShouldThrow("InterruptedException");
1704              } catch (InterruptedException success) {
1705 <            } catch (Throwable t) {
1706 <                threadUnexpectedException(t);
1705 >                threadAssertFalse(Thread.interrupted());
1706 >                return;
1707 >            } catch (Throwable fail) {
1708 >                threadUnexpectedException(fail);
1709              }
1710 +            threadShouldThrow("InterruptedException");
1711          }
1712      }
1713  
# Line 793 | Line 1717 | public class JSR166TestCase extends Test
1717          public final T call() {
1718              try {
1719                  return realCall();
1720 <            } catch (Throwable t) {
1721 <                threadUnexpectedException(t);
798 <                return null;
799 <            }
800 <        }
801 <    }
802 <
803 <    public abstract class CheckedInterruptedCallable<T>
804 <        implements Callable<T> {
805 <        protected abstract T realCall() throws Throwable;
806 <
807 <        public final T call() {
808 <            try {
809 <                T result = realCall();
810 <                threadShouldThrow("InterruptedException");
811 <                return result;
812 <            } catch (InterruptedException success) {
813 <            } catch (Throwable t) {
814 <                threadUnexpectedException(t);
1720 >            } catch (Throwable fail) {
1721 >                threadUnexpectedException(fail);
1722              }
1723 <            return null;
1723 >            throw new AssertionError("unreached");
1724          }
1725      }
1726  
# Line 821 | Line 1728 | public class JSR166TestCase extends Test
1728          public void run() {}
1729      }
1730  
1731 <    public static class NoOpCallable implements Callable {
1731 >    public static class NoOpCallable implements Callable<Object> {
1732          public Object call() { return Boolean.TRUE; }
1733      }
1734  
1735      public static final String TEST_STRING = "a test string";
1736  
1737      public static class StringTask implements Callable<String> {
1738 <        public String call() { return TEST_STRING; }
1738 >        final String value;
1739 >        public StringTask() { this(TEST_STRING); }
1740 >        public StringTask(String value) { this.value = value; }
1741 >        public String call() { return value; }
1742      }
1743  
1744      public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
# Line 841 | Line 1751 | public class JSR166TestCase extends Test
1751              }};
1752      }
1753  
1754 <    public Runnable awaiter(final CountDownLatch latch) {
1754 >    public Runnable countDowner(final CountDownLatch latch) {
1755          return new CheckedRunnable() {
1756              public void realRun() throws InterruptedException {
1757 <                latch.await();
1757 >                latch.countDown();
1758              }};
1759      }
1760  
1761 <    public static class NPETask implements Callable<String> {
1762 <        public String call() { throw new NullPointerException(); }
1763 <    }
1764 <
1765 <    public static class CallableOne implements Callable<Integer> {
1766 <        public Integer call() { return one; }
1767 <    }
1768 <
1769 <    public class ShortRunnable extends CheckedRunnable {
1770 <        protected void realRun() throws Throwable {
1771 <            delay(SHORT_DELAY_MS);
1761 >    class LatchAwaiter extends CheckedRunnable {
1762 >        static final int NEW = 0;
1763 >        static final int RUNNING = 1;
1764 >        static final int DONE = 2;
1765 >        final CountDownLatch latch;
1766 >        int state = NEW;
1767 >        LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1768 >        public void realRun() throws InterruptedException {
1769 >            state = 1;
1770 >            await(latch);
1771 >            state = 2;
1772          }
1773      }
1774  
1775 <    public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1776 <        protected void realRun() throws InterruptedException {
867 <            delay(SHORT_DELAY_MS);
868 <        }
1775 >    public LatchAwaiter awaiter(CountDownLatch latch) {
1776 >        return new LatchAwaiter(latch);
1777      }
1778  
1779 <    public class SmallRunnable extends CheckedRunnable {
1780 <        protected void realRun() throws Throwable {
1781 <            delay(SMALL_DELAY_MS);
1779 >    public void await(CountDownLatch latch, long timeoutMillis) {
1780 >        boolean timedOut = false;
1781 >        try {
1782 >            timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1783 >        } catch (Throwable fail) {
1784 >            threadUnexpectedException(fail);
1785          }
1786 +        if (timedOut)
1787 +            fail("timed out waiting for CountDownLatch for "
1788 +                 + (timeoutMillis/1000) + " sec");
1789      }
1790  
1791 <    public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1792 <        protected void realRun() {
879 <            try {
880 <                delay(SMALL_DELAY_MS);
881 <            } catch (InterruptedException ok) {}
882 <        }
1791 >    public void await(CountDownLatch latch) {
1792 >        await(latch, LONG_DELAY_MS);
1793      }
1794  
1795 <    public class SmallCallable extends CheckedCallable {
1796 <        protected Object realCall() throws InterruptedException {
1797 <            delay(SMALL_DELAY_MS);
1798 <            return Boolean.TRUE;
1795 >    public void await(Semaphore semaphore) {
1796 >        boolean timedOut = false;
1797 >        try {
1798 >            timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1799 >        } catch (Throwable fail) {
1800 >            threadUnexpectedException(fail);
1801          }
1802 +        if (timedOut)
1803 +            fail("timed out waiting for Semaphore for "
1804 +                 + (LONG_DELAY_MS/1000) + " sec");
1805      }
1806  
1807 <    public class MediumRunnable extends CheckedRunnable {
1808 <        protected void realRun() throws Throwable {
1809 <            delay(MEDIUM_DELAY_MS);
1807 >    public void await(CyclicBarrier barrier) {
1808 >        try {
1809 >            barrier.await(LONG_DELAY_MS, MILLISECONDS);
1810 >        } catch (Throwable fail) {
1811 >            threadUnexpectedException(fail);
1812          }
1813      }
1814  
1815 <    public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1816 <        protected void realRun() throws InterruptedException {
1817 <            delay(MEDIUM_DELAY_MS);
1818 <        }
1815 > //     /**
1816 > //      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1817 > //      */
1818 > //     public void await(AtomicBoolean flag) {
1819 > //         await(flag, LONG_DELAY_MS);
1820 > //     }
1821 >
1822 > //     /**
1823 > //      * Spin-waits up to the specified timeout until flag becomes true.
1824 > //      */
1825 > //     public void await(AtomicBoolean flag, long timeoutMillis) {
1826 > //         long startTime = System.nanoTime();
1827 > //         while (!flag.get()) {
1828 > //             if (millisElapsedSince(startTime) > timeoutMillis)
1829 > //                 throw new AssertionError("timed out");
1830 > //             Thread.yield();
1831 > //         }
1832 > //     }
1833 >
1834 >    public static class NPETask implements Callable<String> {
1835 >        public String call() { throw new NullPointerException(); }
1836      }
1837  
1838      public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
# Line 910 | Line 1844 | public class JSR166TestCase extends Test
1844              }};
1845      }
1846  
913    public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
914        protected void realRun() {
915            try {
916                delay(MEDIUM_DELAY_MS);
917            } catch (InterruptedException ok) {}
918        }
919    }
920
921    public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
922        protected void realRun() {
923            try {
924                delay(LONG_DELAY_MS);
925            } catch (InterruptedException ok) {}
926        }
927    }
928
1847      /**
1848       * For use as ThreadFactory in constructors
1849       */
# Line 939 | Line 1857 | public class JSR166TestCase extends Test
1857          boolean isDone();
1858      }
1859  
942    public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
943        return new TrackedRunnable() {
944                private volatile boolean done = false;
945                public boolean isDone() { return done; }
946                public void run() {
947                    try {
948                        delay(timeoutMillis);
949                        done = true;
950                    } catch (InterruptedException ok) {}
951                }
952            };
953    }
954
955    public static class TrackedShortRunnable implements Runnable {
956        public volatile boolean done = false;
957        public void run() {
958            try {
959                delay(SHORT_DELAY_MS);
960                done = true;
961            } catch (InterruptedException ok) {}
962        }
963    }
964
965    public static class TrackedSmallRunnable implements Runnable {
966        public volatile boolean done = false;
967        public void run() {
968            try {
969                delay(SMALL_DELAY_MS);
970                done = true;
971            } catch (InterruptedException ok) {}
972        }
973    }
974
975    public static class TrackedMediumRunnable implements Runnable {
976        public volatile boolean done = false;
977        public void run() {
978            try {
979                delay(MEDIUM_DELAY_MS);
980                done = true;
981            } catch (InterruptedException ok) {}
982        }
983    }
984
985    public static class TrackedLongRunnable implements Runnable {
986        public volatile boolean done = false;
987        public void run() {
988            try {
989                delay(LONG_DELAY_MS);
990                done = true;
991            } catch (InterruptedException ok) {}
992        }
993    }
994
1860      public static class TrackedNoOpRunnable implements Runnable {
1861          public volatile boolean done = false;
1862          public void run() {
# Line 999 | Line 1864 | public class JSR166TestCase extends Test
1864          }
1865      }
1866  
1002    public static class TrackedCallable implements Callable {
1003        public volatile boolean done = false;
1004        public Object call() {
1005            try {
1006                delay(SMALL_DELAY_MS);
1007                done = true;
1008            } catch (InterruptedException ok) {}
1009            return Boolean.TRUE;
1010        }
1011    }
1012
1867      /**
1868       * Analog of CheckedRunnable for RecursiveAction
1869       */
1870      public abstract class CheckedRecursiveAction extends RecursiveAction {
1871          protected abstract void realCompute() throws Throwable;
1872  
1873 <        public final void compute() {
1873 >        @Override protected final void compute() {
1874              try {
1875                  realCompute();
1876 <            } catch (Throwable t) {
1877 <                threadUnexpectedException(t);
1876 >            } catch (Throwable fail) {
1877 >                threadUnexpectedException(fail);
1878              }
1879          }
1880      }
# Line 1031 | Line 1885 | public class JSR166TestCase extends Test
1885      public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1886          protected abstract T realCompute() throws Throwable;
1887  
1888 <        public final T compute() {
1888 >        @Override protected final T compute() {
1889              try {
1890                  return realCompute();
1891 <            } catch (Throwable t) {
1892 <                threadUnexpectedException(t);
1039 <                return null;
1891 >            } catch (Throwable fail) {
1892 >                threadUnexpectedException(fail);
1893              }
1894 +            throw new AssertionError("unreached");
1895          }
1896      }
1897  
# Line 1050 | Line 1904 | public class JSR166TestCase extends Test
1904      }
1905  
1906      /**
1907 <     * A CyclicBarrier that fails with AssertionFailedErrors instead
1908 <     * of throwing checked exceptions.
1907 >     * A CyclicBarrier that uses timed await and fails with
1908 >     * AssertionErrors instead of throwing checked exceptions.
1909       */
1910 <    public class CheckedBarrier extends CyclicBarrier {
1910 >    public static class CheckedBarrier extends CyclicBarrier {
1911          public CheckedBarrier(int parties) { super(parties); }
1912  
1913          public int await() {
1914              try {
1915 <                return super.await();
1916 <            } catch (Exception e) {
1917 <                AssertionFailedError afe =
1918 <                    new AssertionFailedError("Unexpected exception: " + e);
1919 <                afe.initCause(e);
1066 <                throw afe;
1915 >                return super.await(LONGER_DELAY_MS, MILLISECONDS);
1916 >            } catch (TimeoutException timedOut) {
1917 >                throw new AssertionError("timed out");
1918 >            } catch (Exception fail) {
1919 >                throw new AssertionError("Unexpected exception: " + fail, fail);
1920              }
1921          }
1922      }
1923  
1924 <    public void checkEmpty(BlockingQueue q) {
1924 >    void checkEmpty(BlockingQueue<?> q) {
1925          try {
1926              assertTrue(q.isEmpty());
1927              assertEquals(0, q.size());
1928              assertNull(q.peek());
1929              assertNull(q.poll());
1930 <            assertNull(q.poll(0, MILLISECONDS));
1930 >            assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1931              assertEquals(q.toString(), "[]");
1932              assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1933              assertFalse(q.iterator().hasNext());
# Line 1090 | Line 1943 | public class JSR166TestCase extends Test
1943                  q.remove();
1944                  shouldThrow();
1945              } catch (NoSuchElementException success) {}
1946 <        } catch (InterruptedException ie) {
1947 <            threadUnexpectedException(ie);
1946 >        } catch (InterruptedException fail) { threadUnexpectedException(fail); }
1947 >    }
1948 >
1949 >    void assertSerialEquals(Object x, Object y) {
1950 >        assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1951 >    }
1952 >
1953 >    void assertNotSerialEquals(Object x, Object y) {
1954 >        assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1955 >    }
1956 >
1957 >    byte[] serialBytes(Object o) {
1958 >        try {
1959 >            ByteArrayOutputStream bos = new ByteArrayOutputStream();
1960 >            ObjectOutputStream oos = new ObjectOutputStream(bos);
1961 >            oos.writeObject(o);
1962 >            oos.flush();
1963 >            oos.close();
1964 >            return bos.toByteArray();
1965 >        } catch (Throwable fail) {
1966 >            threadUnexpectedException(fail);
1967 >            return new byte[0];
1968 >        }
1969 >    }
1970 >
1971 >    @SuppressWarnings("unchecked")
1972 >    void assertImmutable(Object o) {
1973 >        if (o instanceof Collection) {
1974 >            assertThrows(
1975 >                UnsupportedOperationException.class,
1976 >                () -> ((Collection) o).add(null));
1977          }
1978      }
1979  
1980 +    @SuppressWarnings("unchecked")
1981 +    <T> T serialClone(T o) {
1982 +        T clone = null;
1983 +        try {
1984 +            ObjectInputStream ois = new ObjectInputStream
1985 +                (new ByteArrayInputStream(serialBytes(o)));
1986 +            clone = (T) ois.readObject();
1987 +        } catch (Throwable fail) {
1988 +            threadUnexpectedException(fail);
1989 +        }
1990 +        if (o == clone) assertImmutable(o);
1991 +        else assertSame(o.getClass(), clone.getClass());
1992 +        return clone;
1993 +    }
1994 +
1995 +    /**
1996 +     * A version of serialClone that leaves error handling (for
1997 +     * e.g. NotSerializableException) up to the caller.
1998 +     */
1999 +    @SuppressWarnings("unchecked")
2000 +    <T> T serialClonePossiblyFailing(T o)
2001 +        throws ReflectiveOperationException, java.io.IOException {
2002 +        ByteArrayOutputStream bos = new ByteArrayOutputStream();
2003 +        ObjectOutputStream oos = new ObjectOutputStream(bos);
2004 +        oos.writeObject(o);
2005 +        oos.flush();
2006 +        oos.close();
2007 +        ObjectInputStream ois = new ObjectInputStream
2008 +            (new ByteArrayInputStream(bos.toByteArray()));
2009 +        T clone = (T) ois.readObject();
2010 +        if (o == clone) assertImmutable(o);
2011 +        else assertSame(o.getClass(), clone.getClass());
2012 +        return clone;
2013 +    }
2014 +
2015 +    /**
2016 +     * If o implements Cloneable and has a public clone method,
2017 +     * returns a clone of o, else null.
2018 +     */
2019 +    @SuppressWarnings("unchecked")
2020 +    <T> T cloneableClone(T o) {
2021 +        if (!(o instanceof Cloneable)) return null;
2022 +        final T clone;
2023 +        try {
2024 +            clone = (T) o.getClass().getMethod("clone").invoke(o);
2025 +        } catch (NoSuchMethodException ok) {
2026 +            return null;
2027 +        } catch (ReflectiveOperationException unexpected) {
2028 +            throw new Error(unexpected);
2029 +        }
2030 +        assertNotSame(o, clone); // not 100% guaranteed by spec
2031 +        assertSame(o.getClass(), clone.getClass());
2032 +        return clone;
2033 +    }
2034 +
2035 +    public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
2036 +                             Action... throwingActions) {
2037 +        for (Action throwingAction : throwingActions) {
2038 +            boolean threw = false;
2039 +            try { throwingAction.run(); }
2040 +            catch (Throwable t) {
2041 +                threw = true;
2042 +                if (!expectedExceptionClass.isInstance(t))
2043 +                    throw new AssertionError(
2044 +                            "Expected " + expectedExceptionClass.getName() +
2045 +                            ", got " + t.getClass().getName(),
2046 +                            t);
2047 +            }
2048 +            if (!threw)
2049 +                shouldThrow(expectedExceptionClass.getName());
2050 +        }
2051 +    }
2052 +
2053 +    public void assertIteratorExhausted(Iterator<?> it) {
2054 +        try {
2055 +            it.next();
2056 +            shouldThrow();
2057 +        } catch (NoSuchElementException success) {}
2058 +        assertFalse(it.hasNext());
2059 +    }
2060 +
2061 +    public <T> Callable<T> callableThrowing(final Exception ex) {
2062 +        return new Callable<T>() { public T call() throws Exception { throw ex; }};
2063 +    }
2064 +
2065 +    public Runnable runnableThrowing(final RuntimeException ex) {
2066 +        return new Runnable() { public void run() { throw ex; }};
2067 +    }
2068 +
2069 +    /** A reusable thread pool to be shared by tests. */
2070 +    static final ExecutorService cachedThreadPool =
2071 +        new ThreadPoolExecutor(0, Integer.MAX_VALUE,
2072 +                               1000L, MILLISECONDS,
2073 +                               new SynchronousQueue<Runnable>());
2074 +
2075 +    static <T> void shuffle(T[] array) {
2076 +        Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
2077 +    }
2078 +
2079 +    /**
2080 +     * Returns the same String as would be returned by {@link
2081 +     * Object#toString}, whether or not the given object's class
2082 +     * overrides toString().
2083 +     *
2084 +     * @see System#identityHashCode
2085 +     */
2086 +    static String identityString(Object x) {
2087 +        return x.getClass().getName()
2088 +            + "@" + Integer.toHexString(System.identityHashCode(x));
2089 +    }
2090 +
2091 +    // --- Shared assertions for Executor tests ---
2092 +
2093 +    /**
2094 +     * Returns maximum number of tasks that can be submitted to given
2095 +     * pool (with bounded queue) before saturation (when submission
2096 +     * throws RejectedExecutionException).
2097 +     */
2098 +    static final int saturatedSize(ThreadPoolExecutor pool) {
2099 +        BlockingQueue<Runnable> q = pool.getQueue();
2100 +        return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
2101 +    }
2102 +
2103 +    @SuppressWarnings("FutureReturnValueIgnored")
2104 +    void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
2105 +        try {
2106 +            e.execute((Runnable) null);
2107 +            shouldThrow();
2108 +        } catch (NullPointerException success) {}
2109 +
2110 +        if (! (e instanceof ExecutorService)) return;
2111 +        ExecutorService es = (ExecutorService) e;
2112 +        try {
2113 +            es.submit((Runnable) null);
2114 +            shouldThrow();
2115 +        } catch (NullPointerException success) {}
2116 +        try {
2117 +            es.submit((Runnable) null, Boolean.TRUE);
2118 +            shouldThrow();
2119 +        } catch (NullPointerException success) {}
2120 +        try {
2121 +            es.submit((Callable<?>) null);
2122 +            shouldThrow();
2123 +        } catch (NullPointerException success) {}
2124 +
2125 +        if (! (e instanceof ScheduledExecutorService)) return;
2126 +        ScheduledExecutorService ses = (ScheduledExecutorService) e;
2127 +        try {
2128 +            ses.schedule((Runnable) null,
2129 +                         randomTimeout(), randomTimeUnit());
2130 +            shouldThrow();
2131 +        } catch (NullPointerException success) {}
2132 +        try {
2133 +            ses.schedule((Callable<?>) null,
2134 +                         randomTimeout(), randomTimeUnit());
2135 +            shouldThrow();
2136 +        } catch (NullPointerException success) {}
2137 +        try {
2138 +            ses.scheduleAtFixedRate((Runnable) null,
2139 +                                    randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2140 +            shouldThrow();
2141 +        } catch (NullPointerException success) {}
2142 +        try {
2143 +            ses.scheduleWithFixedDelay((Runnable) null,
2144 +                                       randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2145 +            shouldThrow();
2146 +        } catch (NullPointerException success) {}
2147 +    }
2148 +
2149 +    void setRejectedExecutionHandler(
2150 +        ThreadPoolExecutor p, RejectedExecutionHandler handler) {
2151 +        p.setRejectedExecutionHandler(handler);
2152 +        assertSame(handler, p.getRejectedExecutionHandler());
2153 +    }
2154 +
2155 +    void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
2156 +        final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
2157 +        final long savedTaskCount = p.getTaskCount();
2158 +        final long savedCompletedTaskCount = p.getCompletedTaskCount();
2159 +        final int savedQueueSize = p.getQueue().size();
2160 +        final boolean stock = (p.getClass().getClassLoader() == null);
2161 +
2162 +        Runnable r = () -> {};
2163 +        Callable<Boolean> c = () -> Boolean.TRUE;
2164 +
2165 +        class Recorder implements RejectedExecutionHandler {
2166 +            public volatile Runnable r = null;
2167 +            public volatile ThreadPoolExecutor p = null;
2168 +            public void reset() { r = null; p = null; }
2169 +            public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2170 +                assertNull(this.r);
2171 +                assertNull(this.p);
2172 +                this.r = r;
2173 +                this.p = p;
2174 +            }
2175 +        }
2176 +
2177 +        // check custom handler is invoked exactly once per task
2178 +        Recorder recorder = new Recorder();
2179 +        setRejectedExecutionHandler(p, recorder);
2180 +        for (int i = 2; i--> 0; ) {
2181 +            recorder.reset();
2182 +            p.execute(r);
2183 +            if (stock && p.getClass() == ThreadPoolExecutor.class)
2184 +                assertSame(r, recorder.r);
2185 +            assertSame(p, recorder.p);
2186 +
2187 +            recorder.reset();
2188 +            assertFalse(p.submit(r).isDone());
2189 +            if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2190 +            assertSame(p, recorder.p);
2191 +
2192 +            recorder.reset();
2193 +            assertFalse(p.submit(r, Boolean.TRUE).isDone());
2194 +            if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2195 +            assertSame(p, recorder.p);
2196 +
2197 +            recorder.reset();
2198 +            assertFalse(p.submit(c).isDone());
2199 +            if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2200 +            assertSame(p, recorder.p);
2201 +
2202 +            if (p instanceof ScheduledExecutorService) {
2203 +                ScheduledExecutorService s = (ScheduledExecutorService) p;
2204 +                ScheduledFuture<?> future;
2205 +
2206 +                recorder.reset();
2207 +                future = s.schedule(r, randomTimeout(), randomTimeUnit());
2208 +                assertFalse(future.isDone());
2209 +                if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2210 +                assertSame(p, recorder.p);
2211 +
2212 +                recorder.reset();
2213 +                future = s.schedule(c, randomTimeout(), randomTimeUnit());
2214 +                assertFalse(future.isDone());
2215 +                if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2216 +                assertSame(p, recorder.p);
2217 +
2218 +                recorder.reset();
2219 +                future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2220 +                assertFalse(future.isDone());
2221 +                if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2222 +                assertSame(p, recorder.p);
2223 +
2224 +                recorder.reset();
2225 +                future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2226 +                assertFalse(future.isDone());
2227 +                if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2228 +                assertSame(p, recorder.p);
2229 +            }
2230 +        }
2231 +
2232 +        // Checking our custom handler above should be sufficient, but
2233 +        // we add some integration tests of standard handlers.
2234 +        final AtomicReference<Thread> thread = new AtomicReference<>();
2235 +        final Runnable setThread = () -> thread.set(Thread.currentThread());
2236 +
2237 +        setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2238 +        try {
2239 +            p.execute(setThread);
2240 +            shouldThrow();
2241 +        } catch (RejectedExecutionException success) {}
2242 +        assertNull(thread.get());
2243 +
2244 +        setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2245 +        p.execute(setThread);
2246 +        assertNull(thread.get());
2247 +
2248 +        setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2249 +        p.execute(setThread);
2250 +        if (p.isShutdown())
2251 +            assertNull(thread.get());
2252 +        else
2253 +            assertSame(Thread.currentThread(), thread.get());
2254 +
2255 +        setRejectedExecutionHandler(p, savedHandler);
2256 +
2257 +        // check that pool was not perturbed by handlers
2258 +        assertEquals(savedTaskCount, p.getTaskCount());
2259 +        assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2260 +        assertEquals(savedQueueSize, p.getQueue().size());
2261 +    }
2262 +
2263 +    void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2264 +        assertEquals(x, y);
2265 +        assertEquals(y, x);
2266 +        assertEquals(x.isEmpty(), y.isEmpty());
2267 +        assertEquals(x.size(), y.size());
2268 +        if (x instanceof List) {
2269 +            assertEquals(x.toString(), y.toString());
2270 +        }
2271 +        if (x instanceof List || x instanceof Set) {
2272 +            assertEquals(x.hashCode(), y.hashCode());
2273 +        }
2274 +        if (x instanceof List || x instanceof Deque) {
2275 +            assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2276 +            assertTrue(Arrays.equals(x.toArray(new Object[0]),
2277 +                                     y.toArray(new Object[0])));
2278 +        }
2279 +    }
2280 +
2281 +    /**
2282 +     * A weaker form of assertCollectionsEquals which does not insist
2283 +     * that the two collections satisfy Object#equals(Object), since
2284 +     * they may use identity semantics as Deques do.
2285 +     */
2286 +    void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2287 +        if (x instanceof List || x instanceof Set)
2288 +            assertCollectionsEquals(x, y);
2289 +        else {
2290 +            assertEquals(x.isEmpty(), y.isEmpty());
2291 +            assertEquals(x.size(), y.size());
2292 +            assertEquals(new HashSet<Object>(x), new HashSet<Object>(y));
2293 +            if (x instanceof Deque) {
2294 +                assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2295 +                assertTrue(Arrays.equals(x.toArray(new Object[0]),
2296 +                                         y.toArray(new Object[0])));
2297 +            }
2298 +        }
2299 +    }
2300   }

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