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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.5 by dl, Fri Sep 26 15:33:13 2003 UTC vs.
Revision 1.82 by jsr166, Tue May 24 23:34:03 2011 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.io.ByteArrayInputStream;
11	>	import java.io.ByteArrayOutputStream;
12	>	import java.io.ObjectInputStream;
13	>	import java.io.ObjectOutputStream;
14	>	import java.util.Arrays;
15	>	import java.util.Date;
16	>	import java.util.NoSuchElementException;
17	>	import java.util.PropertyPermission;
18		import java.util.concurrent.*;
19	<	import java.io.*;
20	<
19	>	import java.util.concurrent.atomic.AtomicBoolean;
20	>	import java.util.concurrent.atomic.AtomicReference;
21	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
22	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
23	>	import java.security.CodeSource;
24	>	import java.security.Permission;
25	>	import java.security.PermissionCollection;
26	>	import java.security.Permissions;
27	>	import java.security.Policy;
28	>	import java.security.ProtectionDomain;
29	>	import java.security.SecurityPermission;
30
31		/**
32		* Base class for JSR166 Junit TCK tests.  Defines some constants,
33		* utility methods and classes, as well as a simple framework for
34		* helping to make sure that assertions failing in generated threads
35		* cause the associated test that generated them to itself fail (which
36	<	* JUnit doe not otherwise arrange).  The rules for creating such
36	>	* JUnit does not otherwise arrange).  The rules for creating such
37		* tests are:
38		*
39		* <ol>
40		*
41		* <li> All assertions in code running in generated threads must use
42	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
43	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
44	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
42	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
43	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
44	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
45		* particularly recommended) for other code to use these forms too.
46		* Only the most typically used JUnit assertion methods are defined
47		* this way, but enough to live with.</li>
48		*
49	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
50	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
49	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
50	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
51		* them. These methods are used to clear and check for thread
52		* assertion failures.</li>
53		*
54	<	* <li>All delays and timeouts must use one of the constants {@link
55	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
56	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
54	>	* <li>All delays and timeouts must use one of the constants {@code
55	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
56	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
57		* discriminable from zero time, and always allows enough time for the
58		* small amounts of computation (creating a thread, calling a few
59		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
60		* is always discriminable as larger than SHORT and smaller than
61		* MEDIUM.  And so on. These constants are set to conservative values,
62		* but even so, if there is ever any doubt, they can all be increased
63	<	* in one spot to rerun tests on slower platforms</li>
63	>	* in one spot to rerun tests on slower platforms.</li>
64		*
65		* <li> All threads generated must be joined inside each test case
66	<	* method (or <tt>fail</tt> to do so) before returning from the
67	<	* method. The {@link joinPool} method can be used to do this when
66	>	* method (or {@code fail} to do so) before returning from the
67	>	* method. The {@code joinPool} method can be used to do this when
68		* using Executors.</li>
69		*
70		* </ol>
71	+	*
72	+	* <p> <b>Other notes</b>
73	+	* <ul>
74	+	*
75	+	* <li> Usually, there is one testcase method per JSR166 method
76	+	* covering "normal" operation, and then as many exception-testing
77	+	* methods as there are exceptions the method can throw. Sometimes
78	+	* there are multiple tests per JSR166 method when the different
79	+	* "normal" behaviors differ significantly. And sometimes testcases
80	+	* cover multiple methods when they cannot be tested in
81	+	* isolation.</li>
82	+	*
83	+	* <li> The documentation style for testcases is to provide as javadoc
84	+	* a simple sentence or two describing the property that the testcase
85	+	* method purports to test. The javadocs do not say anything about how
86	+	* the property is tested. To find out, read the code.</li>
87	+	*
88	+	* <li> These tests are "conformance tests", and do not attempt to
89	+	* test throughput, latency, scalability or other performance factors
90	+	* (see the separate "jtreg" tests for a set intended to check these
91	+	* for the most central aspects of functionality.) So, most tests use
92	+	* the smallest sensible numbers of threads, collection sizes, etc
93	+	* needed to check basic conformance.</li>
94	+	*
95	+	* <li>The test classes currently do not declare inclusion in
96	+	* any particular package to simplify things for people integrating
97	+	* them in TCK test suites.</li>
98	+	*
99	+	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
100	+	* runs all JSR166 unit tests.</li>
101	+	*
102	+	* </ul>
103		*/
104		public class JSR166TestCase extends TestCase {
105	+	private static final boolean useSecurityManager =
106	+	Boolean.getBoolean("jsr166.useSecurityManager");
107	+
108	+	protected static final boolean expensiveTests =
109	+	Boolean.getBoolean("jsr166.expensiveTests");
110	+
111	+	/**
112	+	* If true, report on stdout all "slow" tests, that is, ones that
113	+	* take more than profileThreshold milliseconds to execute.
114	+	*/
115	+	private static final boolean profileTests =
116	+	Boolean.getBoolean("jsr166.profileTests");
117	+
118	+	/**
119	+	* The number of milliseconds that tests are permitted for
120	+	* execution without being reported, when profileTests is set.
121	+	*/
122	+	private static final long profileThreshold =
123	+	Long.getLong("jsr166.profileThreshold", 100);
124	+
125	+	protected void runTest() throws Throwable {
126	+	if (profileTests)
127	+	runTestProfiled();
128	+	else
129	+	super.runTest();
130	+	}
131	+
132	+	protected void runTestProfiled() throws Throwable {
133	+	long t0 = System.nanoTime();
134	+	try {
135	+	super.runTest();
136	+	} finally {
137	+	long elapsedMillis =
138	+	(System.nanoTime() - t0) / (1000L * 1000L);
139	+	if (elapsedMillis >= profileThreshold)
140	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
141	+	}
142	+	}
143	+
144	+	/**
145	+	* Runs all JSR166 unit tests using junit.textui.TestRunner
146	+	*/
147	+	public static void main(String[] args) {
148	+	if (useSecurityManager) {
149	+	System.err.println("Setting a permissive security manager");
150	+	Policy.setPolicy(permissivePolicy());
151	+	System.setSecurityManager(new SecurityManager());
152	+	}
153	+	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
154	+
155	+	Test s = suite();
156	+	for (int i = 0; i < iters; ++i) {
157	+	junit.textui.TestRunner.run(s);
158	+	System.gc();
159	+	System.runFinalization();
160	+	}
161	+	System.exit(0);
162	+	}
163	+
164	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
165	+	TestSuite suite = new TestSuite();
166	+	for (Object suiteOrClass : suiteOrClasses) {
167	+	if (suiteOrClass instanceof TestSuite)
168	+	suite.addTest((TestSuite) suiteOrClass);
169	+	else if (suiteOrClass instanceof Class)
170	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
171	+	else
172	+	throw new ClassCastException("not a test suite or class");
173	+	}
174	+	return suite;
175	+	}
176	+
177	+	/**
178	+	* Collects all JSR166 unit tests as one suite.
179	+	*/
180	+	public static Test suite() {
181	+	return newTestSuite(
182	+	ForkJoinPoolTest.suite(),
183	+	ForkJoinTaskTest.suite(),
184	+	RecursiveActionTest.suite(),
185	+	RecursiveTaskTest.suite(),
186	+	LinkedTransferQueueTest.suite(),
187	+	PhaserTest.suite(),
188	+	ThreadLocalRandomTest.suite(),
189	+	AbstractExecutorServiceTest.suite(),
190	+	AbstractQueueTest.suite(),
191	+	AbstractQueuedSynchronizerTest.suite(),
192	+	AbstractQueuedLongSynchronizerTest.suite(),
193	+	ArrayBlockingQueueTest.suite(),
194	+	ArrayDequeTest.suite(),
195	+	AtomicBooleanTest.suite(),
196	+	AtomicIntegerArrayTest.suite(),
197	+	AtomicIntegerFieldUpdaterTest.suite(),
198	+	AtomicIntegerTest.suite(),
199	+	AtomicLongArrayTest.suite(),
200	+	AtomicLongFieldUpdaterTest.suite(),
201	+	AtomicLongTest.suite(),
202	+	AtomicMarkableReferenceTest.suite(),
203	+	AtomicReferenceArrayTest.suite(),
204	+	AtomicReferenceFieldUpdaterTest.suite(),
205	+	AtomicReferenceTest.suite(),
206	+	AtomicStampedReferenceTest.suite(),
207	+	ConcurrentHashMapTest.suite(),
208	+	ConcurrentLinkedDequeTest.suite(),
209	+	ConcurrentLinkedQueueTest.suite(),
210	+	ConcurrentSkipListMapTest.suite(),
211	+	ConcurrentSkipListSubMapTest.suite(),
212	+	ConcurrentSkipListSetTest.suite(),
213	+	ConcurrentSkipListSubSetTest.suite(),
214	+	CopyOnWriteArrayListTest.suite(),
215	+	CopyOnWriteArraySetTest.suite(),
216	+	CountDownLatchTest.suite(),
217	+	CyclicBarrierTest.suite(),
218	+	DelayQueueTest.suite(),
219	+	EntryTest.suite(),
220	+	ExchangerTest.suite(),
221	+	ExecutorsTest.suite(),
222	+	ExecutorCompletionServiceTest.suite(),
223	+	FutureTaskTest.suite(),
224	+	LinkedBlockingDequeTest.suite(),
225	+	LinkedBlockingQueueTest.suite(),
226	+	LinkedListTest.suite(),
227	+	LockSupportTest.suite(),
228	+	PriorityBlockingQueueTest.suite(),
229	+	PriorityQueueTest.suite(),
230	+	ReentrantLockTest.suite(),
231	+	ReentrantReadWriteLockTest.suite(),
232	+	ScheduledExecutorTest.suite(),
233	+	ScheduledExecutorSubclassTest.suite(),
234	+	SemaphoreTest.suite(),
235	+	SynchronousQueueTest.suite(),
236	+	SystemTest.suite(),
237	+	ThreadLocalTest.suite(),
238	+	ThreadPoolExecutorTest.suite(),
239	+	ThreadPoolExecutorSubclassTest.suite(),
240	+	ThreadTest.suite(),
241	+	TimeUnitTest.suite(),
242	+	TreeMapTest.suite(),
243	+	TreeSetTest.suite(),
244	+	TreeSubMapTest.suite(),
245	+	TreeSubSetTest.suite());
246	+	}
247	+
248
249		public static long SHORT_DELAY_MS;
250		public static long SMALL_DELAY_MS;
#	Line 61 | Line 253 | public class JSR166TestCase extends Test
253
254
255		/**
256	<	* Return the shortest timed delay. This could
257	<	* be reimplmented to use for example a Property.
258	<	*/
256	>	* Returns the shortest timed delay. This could
257	>	* be reimplemented to use for example a Property.
258	>	*/
259		protected long getShortDelay() {
260	<	return 100;
260	>	return 50;
261		}
262
263
264		/**
265	<	* Set delays as multiples of SHORT_DELAY.
265	>	* Sets delays as multiples of SHORT_DELAY.
266		*/
267	<	protected  void setDelays() {
267	>	protected void setDelays() {
268		SHORT_DELAY_MS = getShortDelay();
269	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
269	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
270		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
271	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
271	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
272	>	}
273	>
274	>	/**
275	>	* Returns a timeout in milliseconds to be used in tests that
276	>	* verify that operations block or time out.
277	>	*/
278	>	long timeoutMillis() {
279	>	return SHORT_DELAY_MS / 4;
280	>	}
281	>
282	>	/**
283	>	* Returns a new Date instance representing a time delayMillis
284	>	* milliseconds in the future.
285	>	*/
286	>	Date delayedDate(long delayMillis) {
287	>	return new Date(new Date().getTime() + delayMillis);
288		}
289
290		/**
291	<	* Flag set true if any threadAssert methods fail
291	>	* The first exception encountered if any threadAssertXXX method fails.
292		*/
293	<	volatile boolean threadFailed;
293	>	private final AtomicReference<Throwable> threadFailure
294	>	= new AtomicReference<Throwable>(null);
295
296		/**
297	<	* Initialize test to indicate that no thread assertions have failed
297	>	* Records an exception so that it can be rethrown later in the test
298	>	* harness thread, triggering a test case failure.  Only the first
299	>	* failure is recorded; subsequent calls to this method from within
300	>	* the same test have no effect.
301		*/
302	<	public void setUp() {
302	>	public void threadRecordFailure(Throwable t) {
303	>	threadFailure.compareAndSet(null, t);
304	>	}
305	>
306	>	public void setUp() {
307		setDelays();
92	–	threadFailed = false;
308		}
309
310		/**
311	<	* Trigger test case failure if any thread assertions have failed
311	>	* Triggers test case failure if any thread assertions have failed,
312	>	* by rethrowing, in the test harness thread, any exception recorded
313	>	* earlier by threadRecordFailure.
314		*/
315	<	public void tearDown() {
316	<	assertFalse(threadFailed);
315	>	public void tearDown() throws Exception {
316	>	Throwable t = threadFailure.getAndSet(null);
317	>	if (t != null) {
318	>	if (t instanceof Error)
319	>	throw (Error) t;
320	>	else if (t instanceof RuntimeException)
321	>	throw (RuntimeException) t;
322	>	else if (t instanceof Exception)
323	>	throw (Exception) t;
324	>	else {
325	>	AssertionFailedError afe =
326	>	new AssertionFailedError(t.toString());
327	>	afe.initCause(t);
328	>	throw afe;
329	>	}
330	>	}
331		}
332
333		/**
334	<	* Fail, also setting status to indicate current testcase should fail
335	<	*/
334	>	* Just like fail(reason), but additionally recording (using
335	>	* threadRecordFailure) any AssertionFailedError thrown, so that
336	>	* the current testcase will fail.
337	>	*/
338		public void threadFail(String reason) {
339	<	threadFailed = true;
340	<	fail(reason);
339	>	try {
340	>	fail(reason);
341	>	} catch (AssertionFailedError t) {
342	>	threadRecordFailure(t);
343	>	fail(reason);
344	>	}
345		}
346
347		/**
348	<	* If expression not true, set status to indicate current testcase
349	<	* should fail
350	<	*/
348	>	* Just like assertTrue(b), but additionally recording (using
349	>	* threadRecordFailure) any AssertionFailedError thrown, so that
350	>	* the current testcase will fail.
351	>	*/
352		public void threadAssertTrue(boolean b) {
353	<	if (!b) {
116	<	threadFailed = true;
353	>	try {
354		assertTrue(b);
355	+	} catch (AssertionFailedError t) {
356	+	threadRecordFailure(t);
357	+	throw t;
358		}
359		}
360
361		/**
362	<	* If expression not false, set status to indicate current testcase
363	<	* should fail
364	<	*/
362	>	* Just like assertFalse(b), but additionally recording (using
363	>	* threadRecordFailure) any AssertionFailedError thrown, so that
364	>	* the current testcase will fail.
365	>	*/
366		public void threadAssertFalse(boolean b) {
367	<	if (b) {
127	<	threadFailed = true;
367	>	try {
368		assertFalse(b);
369	+	} catch (AssertionFailedError t) {
370	+	threadRecordFailure(t);
371	+	throw t;
372		}
373		}
374
375		/**
376	<	* If argument not null, set status to indicate current testcase
377	<	* should fail
378	<	*/
376	>	* Just like assertNull(x), but additionally recording (using
377	>	* threadRecordFailure) any AssertionFailedError thrown, so that
378	>	* the current testcase will fail.
379	>	*/
380		public void threadAssertNull(Object x) {
381	<	if (x != null) {
138	<	threadFailed = true;
381	>	try {
382		assertNull(x);
383	+	} catch (AssertionFailedError t) {
384	+	threadRecordFailure(t);
385	+	throw t;
386		}
387		}
388
389		/**
390	<	* If arguments not equal, set status to indicate current testcase
391	<	* should fail
392	<	*/
390	>	* Just like assertEquals(x, y), but additionally recording (using
391	>	* threadRecordFailure) any AssertionFailedError thrown, so that
392	>	* the current testcase will fail.
393	>	*/
394		public void threadAssertEquals(long x, long y) {
395	<	if (x != y) {
149	<	threadFailed = true;
395	>	try {
396		assertEquals(x, y);
397	+	} catch (AssertionFailedError t) {
398	+	threadRecordFailure(t);
399	+	throw t;
400		}
401		}
402
403		/**
404	<	* If arguments not equal, set status to indicate current testcase
405	<	* should fail
406	<	*/
404	>	* Just like assertEquals(x, y), but additionally recording (using
405	>	* threadRecordFailure) any AssertionFailedError thrown, so that
406	>	* the current testcase will fail.
407	>	*/
408		public void threadAssertEquals(Object x, Object y) {
409	<	if (x != y && (x == null || !x.equals(y))) {
160	<	threadFailed = true;
409	>	try {
410		assertEquals(x, y);
411	+	} catch (AssertionFailedError t) {
412	+	threadRecordFailure(t);
413	+	throw t;
414	+	} catch (Throwable t) {
415	+	threadUnexpectedException(t);
416		}
417		}
418
419		/**
420	<	* threadFail with message "should throw exception"
421	<	*/
420	>	* Just like assertSame(x, y), but additionally recording (using
421	>	* threadRecordFailure) any AssertionFailedError thrown, so that
422	>	* the current testcase will fail.
423	>	*/
424	>	public void threadAssertSame(Object x, Object y) {
425	>	try {
426	>	assertSame(x, y);
427	>	} catch (AssertionFailedError t) {
428	>	threadRecordFailure(t);
429	>	throw t;
430	>	}
431	>	}
432	>
433	>	/**
434	>	* Calls threadFail with message "should throw exception".
435	>	*/
436		public void threadShouldThrow() {
437	<	threadFailed = true;
438	<	fail("should throw exception");
437	>	threadFail("should throw exception");
438	>	}
439	>
440	>	/**
441	>	* Calls threadFail with message "should throw" + exceptionName.
442	>	*/
443	>	public void threadShouldThrow(String exceptionName) {
444	>	threadFail("should throw " + exceptionName);
445		}
446
447		/**
448	<	* threadFail with message "Unexpected exception"
448	>	* Records the given exception using {@link #threadRecordFailure},
449	>	* then rethrows the exception, wrapping it in an
450	>	* AssertionFailedError if necessary.
451		*/
452	<	public void threadUnexpectedException() {
453	<	threadFailed = true;
454	<	fail("Unexpected exception");
452	>	public void threadUnexpectedException(Throwable t) {
453	>	threadRecordFailure(t);
454	>	t.printStackTrace();
455	>	if (t instanceof RuntimeException)
456	>	throw (RuntimeException) t;
457	>	else if (t instanceof Error)
458	>	throw (Error) t;
459	>	else {
460	>	AssertionFailedError afe =
461	>	new AssertionFailedError("unexpected exception: " + t);
462	>	afe.initCause(t);
463	>	throw afe;
464	>	}
465		}
466
467	+	/**
468	+	* Delays, via Thread.sleep, for the given millisecond delay, but
469	+	* if the sleep is shorter than specified, may re-sleep or yield
470	+	* until time elapses.
471	+	*/
472	+	static void delay(long millis) throws InterruptedException {
473	+	long startTime = System.nanoTime();
474	+	long ns = millis * 1000 * 1000;
475	+	for (;;) {
476	+	if (millis > 0L)
477	+	Thread.sleep(millis);
478	+	else // too short to sleep
479	+	Thread.yield();
480	+	long d = ns - (System.nanoTime() - startTime);
481	+	if (d > 0L)
482	+	millis = d / (1000 * 1000);
483	+	else
484	+	break;
485	+	}
486	+	}
487
488		/**
489	<	* Wait out termination of a thread pool or fail doing so
489	>	* Waits out termination of a thread pool or fails doing so.
490		*/
491	<	public void joinPool(ExecutorService exec) {
491	>	void joinPool(ExecutorService exec) {
492		try {
493		exec.shutdown();
494	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
495	<	} catch(InterruptedException ie) {
496	<	fail("Unexpected exception");
494	>	assertTrue("ExecutorService did not terminate in a timely manner",
495	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
496	>	} catch (SecurityException ok) {
497	>	// Allowed in case test doesn't have privs
498	>	} catch (InterruptedException ie) {
499	>	fail("Unexpected InterruptedException");
500		}
501		}
502
503	+	/**
504	+	* Checks that thread does not terminate within the default
505	+	* millisecond delay of {@code timeoutMillis()}.
506	+	*/
507	+	void assertThreadStaysAlive(Thread thread) {
508	+	assertThreadStaysAlive(thread, timeoutMillis());
509	+	}
510	+
511	+	/**
512	+	* Checks that thread does not terminate within the given millisecond delay.
513	+	*/
514	+	void assertThreadStaysAlive(Thread thread, long millis) {
515	+	try {
516	+	// No need to optimize the failing case via Thread.join.
517	+	delay(millis);
518	+	assertTrue(thread.isAlive());
519	+	} catch (InterruptedException ie) {
520	+	fail("Unexpected InterruptedException");
521	+	}
522	+	}
523
524		/**
525	<	* fail with message "should throw exception"
526	<	*/
525	>	* Fails with message "should throw exception".
526	>	*/
527		public void shouldThrow() {
528		fail("Should throw exception");
529		}
530
531		/**
532	<	* fail with message "Unexpected exception"
532	>	* Fails with message "should throw " + exceptionName.
533		*/
534	<	public void unexpectedException() {
535	<	fail("Unexpected exception");
534	>	public void shouldThrow(String exceptionName) {
535	>	fail("Should throw " + exceptionName);
536		}
537
209	–
538		/**
539		* The number of elements to place in collections, arrays, etc.
540		*/
541	<	static final int SIZE = 20;
541	>	public static final int SIZE = 20;
542
543		// Some convenient Integer constants
544
545	<	static final Integer zero = new Integer(0);
546	<	static final Integer one = new Integer(1);
547	<	static final Integer two = new Integer(2);
548	<	static final Integer three  = new Integer(3);
549	<	static final Integer four  = new Integer(4);
550	<	static final Integer five  = new Integer(5);
551	<	static final Integer six = new Integer(6);
552	<	static final Integer seven = new Integer(7);
553	<	static final Integer eight = new Integer(8);
554	<	static final Integer nine = new Integer(9);
555	<	static final Integer m1  = new Integer(-1);
556	<	static final Integer m2  = new Integer(-2);
557	<	static final Integer m3  = new Integer(-3);
558	<	static final Integer m4 = new Integer(-4);
559	<	static final Integer m5 = new Integer(-5);
560	<	static final Integer m10 = new Integer(-10);
545	>	public static final Integer zero  = new Integer(0);
546	>	public static final Integer one   = new Integer(1);
547	>	public static final Integer two   = new Integer(2);
548	>	public static final Integer three = new Integer(3);
549	>	public static final Integer four  = new Integer(4);
550	>	public static final Integer five  = new Integer(5);
551	>	public static final Integer six   = new Integer(6);
552	>	public static final Integer seven = new Integer(7);
553	>	public static final Integer eight = new Integer(8);
554	>	public static final Integer nine  = new Integer(9);
555	>	public static final Integer m1  = new Integer(-1);
556	>	public static final Integer m2  = new Integer(-2);
557	>	public static final Integer m3  = new Integer(-3);
558	>	public static final Integer m4  = new Integer(-4);
559	>	public static final Integer m5  = new Integer(-5);
560	>	public static final Integer m6  = new Integer(-6);
561	>	public static final Integer m10 = new Integer(-10);
562
563
564	<	// Some convenient Runnable classes
564	>	/**
565	>	* Runs Runnable r with a security policy that permits precisely
566	>	* the specified permissions.  If there is no current security
567	>	* manager, the runnable is run twice, both with and without a
568	>	* security manager.  We require that any security manager permit
569	>	* getPolicy/setPolicy.
570	>	*/
571	>	public void runWithPermissions(Runnable r, Permission... permissions) {
572	>	SecurityManager sm = System.getSecurityManager();
573	>	if (sm == null) {
574	>	r.run();
575	>	Policy savedPolicy = Policy.getPolicy();
576	>	try {
577	>	Policy.setPolicy(permissivePolicy());
578	>	System.setSecurityManager(new SecurityManager());
579	>	runWithPermissions(r, permissions);
580	>	} finally {
581	>	System.setSecurityManager(null);
582	>	Policy.setPolicy(savedPolicy);
583	>	}
584	>	} else {
585	>	Policy savedPolicy = Policy.getPolicy();
586	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
587	>	Policy.setPolicy(policy);
588
589	<	static class NoOpRunnable implements Runnable {
590	<	public void run() {}
589	>	try {
590	>	r.run();
591	>	} finally {
592	>	policy.addPermission(new SecurityPermission("setPolicy"));
593	>	Policy.setPolicy(savedPolicy);
594	>	}
595	>	}
596		}
597
598	<	static class NoOpCallable implements Callable {
599	<	public Object call() { return Boolean.TRUE; }
598	>	/**
599	>	* Runs a runnable without any permissions.
600	>	*/
601	>	public void runWithoutPermissions(Runnable r) {
602	>	runWithPermissions(r);
603		}
604
605	<	class ShortRunnable implements Runnable {
606	<	public void run() {
607	<	try {
608	<	Thread.sleep(SHORT_DELAY_MS);
605	>	/**
606	>	* A security policy where new permissions can be dynamically added
607	>	* or all cleared.
608	>	*/
609	>	public static class AdjustablePolicy extends java.security.Policy {
610	>	Permissions perms = new Permissions();
611	>	AdjustablePolicy(Permission... permissions) {
612	>	for (Permission permission : permissions)
613	>	perms.add(permission);
614	>	}
615	>	void addPermission(Permission perm) { perms.add(perm); }
616	>	void clearPermissions() { perms = new Permissions(); }
617	>	public PermissionCollection getPermissions(CodeSource cs) {
618	>	return perms;
619	>	}
620	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
621	>	return perms;
622	>	}
623	>	public boolean implies(ProtectionDomain pd, Permission p) {
624	>	return perms.implies(p);
625	>	}
626	>	public void refresh() {}
627	>	}
628	>
629	>	/**
630	>	* Returns a policy containing all the permissions we ever need.
631	>	*/
632	>	public static Policy permissivePolicy() {
633	>	return new AdjustablePolicy
634	>	// Permissions j.u.c. needs directly
635	>	(new RuntimePermission("modifyThread"),
636	>	new RuntimePermission("getClassLoader"),
637	>	new RuntimePermission("setContextClassLoader"),
638	>	// Permissions needed to change permissions!
639	>	new SecurityPermission("getPolicy"),
640	>	new SecurityPermission("setPolicy"),
641	>	new RuntimePermission("setSecurityManager"),
642	>	// Permissions needed by the junit test harness
643	>	new RuntimePermission("accessDeclaredMembers"),
644	>	new PropertyPermission("*", "read"),
645	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
646	>	}
647	>
648	>	/**
649	>	* Sleeps until the given time has elapsed.
650	>	* Throws AssertionFailedError if interrupted.
651	>	*/
652	>	void sleep(long millis) {
653	>	try {
654	>	delay(millis);
655	>	} catch (InterruptedException ie) {
656	>	AssertionFailedError afe =
657	>	new AssertionFailedError("Unexpected InterruptedException");
658	>	afe.initCause(ie);
659	>	throw afe;
660	>	}
661	>	}
662	>
663	>	/**
664	>	* Waits up to the specified number of milliseconds for the given
665	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
666	>	*/
667	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
668	>	long timeoutNanos = timeoutMillis * 1000L * 1000L;
669	>	long t0 = System.nanoTime();
670	>	for (;;) {
671	>	Thread.State s = thread.getState();
672	>	if (s == Thread.State.BLOCKED ||
673	>	s == Thread.State.WAITING ||
674	>	s == Thread.State.TIMED_WAITING)
675	>	return;
676	>	else if (s == Thread.State.TERMINATED)
677	>	fail("Unexpected thread termination");
678	>	else if (System.nanoTime() - t0 > timeoutNanos) {
679	>	threadAssertTrue(thread.isAlive());
680	>	return;
681		}
682	<	catch(Exception e) {
683	<	threadUnexpectedException();
682	>	Thread.yield();
683	>	}
684	>	}
685	>
686	>	/**
687	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
688	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
689	>	*/
690	>	void waitForThreadToEnterWaitState(Thread thread) {
691	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
692	>	}
693	>
694	>	/**
695	>	* Returns the number of milliseconds since time given by
696	>	* startNanoTime, which must have been previously returned from a
697	>	* call to {@link System.nanoTime()}.
698	>	*/
699	>	long millisElapsedSince(long startNanoTime) {
700	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
701	>	}
702	>
703	>	/**
704	>	* Returns a new started daemon Thread running the given runnable.
705	>	*/
706	>	Thread newStartedThread(Runnable runnable) {
707	>	Thread t = new Thread(runnable);
708	>	t.setDaemon(true);
709	>	t.start();
710	>	return t;
711	>	}
712	>
713	>	/**
714	>	* Waits for the specified time (in milliseconds) for the thread
715	>	* to terminate (using {@link Thread#join(long)}), else interrupts
716	>	* the thread (in the hope that it may terminate later) and fails.
717	>	*/
718	>	void awaitTermination(Thread t, long timeoutMillis) {
719	>	try {
720	>	t.join(timeoutMillis);
721	>	} catch (InterruptedException ie) {
722	>	threadUnexpectedException(ie);
723	>	} finally {
724	>	if (t.isAlive()) {
725	>	t.interrupt();
726	>	fail("Test timed out");
727		}
728		}
729		}
730
731	<	class ShortInterruptedRunnable implements Runnable {
732	<	public void run() {
731	>	/**
732	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
733	>	* terminate (using {@link Thread#join(long)}), else interrupts
734	>	* the thread (in the hope that it may terminate later) and fails.
735	>	*/
736	>	void awaitTermination(Thread t) {
737	>	awaitTermination(t, LONG_DELAY_MS);
738	>	}
739	>
740	>	// Some convenient Runnable classes
741	>
742	>	public abstract class CheckedRunnable implements Runnable {
743	>	protected abstract void realRun() throws Throwable;
744	>
745	>	public final void run() {
746		try {
747	<	Thread.sleep(SHORT_DELAY_MS);
748	<	threadShouldThrow();
749	<	}
262	<	catch(InterruptedException success) {
747	>	realRun();
748	>	} catch (Throwable t) {
749	>	threadUnexpectedException(t);
750		}
751		}
752		}
753
754	<	class SmallRunnable implements Runnable {
755	<	public void run() {
754	>	public abstract class RunnableShouldThrow implements Runnable {
755	>	protected abstract void realRun() throws Throwable;
756	>
757	>	final Class<?> exceptionClass;
758	>
759	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
760	>	this.exceptionClass = exceptionClass;
761	>	}
762	>
763	>	public final void run() {
764		try {
765	<	Thread.sleep(SMALL_DELAY_MS);
766	<	}
767	<	catch(Exception e) {
768	<	threadUnexpectedException();
765	>	realRun();
766	>	threadShouldThrow(exceptionClass.getSimpleName());
767	>	} catch (Throwable t) {
768	>	if (! exceptionClass.isInstance(t))
769	>	threadUnexpectedException(t);
770		}
771		}
772		}
773
774	<	class SmallCallable implements Callable {
775	<	public Object call() {
774	>	public abstract class ThreadShouldThrow extends Thread {
775	>	protected abstract void realRun() throws Throwable;
776	>
777	>	final Class<?> exceptionClass;
778	>
779	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
780	>	this.exceptionClass = exceptionClass;
781	>	}
782	>
783	>	public final void run() {
784		try {
785	<	Thread.sleep(SMALL_DELAY_MS);
786	<	}
787	<	catch(Exception e) {
788	<	threadUnexpectedException();
785	>	realRun();
786	>	threadShouldThrow(exceptionClass.getSimpleName());
787	>	} catch (Throwable t) {
788	>	if (! exceptionClass.isInstance(t))
789	>	threadUnexpectedException(t);
790		}
286	–	return Boolean.TRUE;
791		}
792		}
793
794	<	class SmallInterruptedRunnable implements Runnable {
795	<	public void run() {
794	>	public abstract class CheckedInterruptedRunnable implements Runnable {
795	>	protected abstract void realRun() throws Throwable;
796	>
797	>	public final void run() {
798		try {
799	<	Thread.sleep(SMALL_DELAY_MS);
800	<	threadShouldThrow();
801	<	}
802	<	catch(InterruptedException success) {
799	>	realRun();
800	>	threadShouldThrow("InterruptedException");
801	>	} catch (InterruptedException success) {
802	>	threadAssertFalse(Thread.interrupted());
803	>	} catch (Throwable t) {
804	>	threadUnexpectedException(t);
805		}
806		}
807		}
808
809	+	public abstract class CheckedCallable<T> implements Callable<T> {
810	+	protected abstract T realCall() throws Throwable;
811
812	<	class MediumRunnable implements Runnable {
303	<	public void run() {
812	>	public final T call() {
813		try {
814	<	Thread.sleep(MEDIUM_DELAY_MS);
815	<	}
816	<	catch(Exception e) {
817	<	threadUnexpectedException();
814	>	return realCall();
815	>	} catch (Throwable t) {
816	>	threadUnexpectedException(t);
817	>	return null;
818		}
819		}
820		}
821
822	<	class MediumInterruptedRunnable implements Runnable {
823	<	public void run() {
822	>	public abstract class CheckedInterruptedCallable<T>
823	>	implements Callable<T> {
824	>	protected abstract T realCall() throws Throwable;
825	>
826	>	public final T call() {
827		try {
828	<	Thread.sleep(MEDIUM_DELAY_MS);
829	<	threadShouldThrow();
830	<	}
831	<	catch(InterruptedException success) {
828	>	T result = realCall();
829	>	threadShouldThrow("InterruptedException");
830	>	return result;
831	>	} catch (InterruptedException success) {
832	>	threadAssertFalse(Thread.interrupted());
833	>	} catch (Throwable t) {
834	>	threadUnexpectedException(t);
835		}
836	+	return null;
837		}
838		}
839
840	<	class MediumPossiblyInterruptedRunnable implements Runnable {
841	<	public void run() {
840	>	public static class NoOpRunnable implements Runnable {
841	>	public void run() {}
842	>	}
843	>
844	>	public static class NoOpCallable implements Callable {
845	>	public Object call() { return Boolean.TRUE; }
846	>	}
847	>
848	>	public static final String TEST_STRING = "a test string";
849	>
850	>	public static class StringTask implements Callable<String> {
851	>	public String call() { return TEST_STRING; }
852	>	}
853	>
854	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
855	>	return new CheckedCallable<String>() {
856	>	protected String realCall() {
857	>	try {
858	>	latch.await();
859	>	} catch (InterruptedException quittingTime) {}
860	>	return TEST_STRING;
861	>	}};
862	>	}
863	>
864	>	public Runnable awaiter(final CountDownLatch latch) {
865	>	return new CheckedRunnable() {
866	>	public void realRun() throws InterruptedException {
867	>	await(latch);
868	>	}};
869	>	}
870	>
871	>	public void await(CountDownLatch latch) {
872	>	try {
873	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
874	>	} catch (Throwable t) {
875	>	threadUnexpectedException(t);
876	>	}
877	>	}
878	>
879	>	//     /**
880	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
881	>	//      */
882	>	//     public void await(AtomicBoolean flag) {
883	>	//         await(flag, LONG_DELAY_MS);
884	>	//     }
885	>
886	>	//     /**
887	>	//      * Spin-waits up to the specified timeout until flag becomes true.
888	>	//      */
889	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
890	>	//         long startTime = System.nanoTime();
891	>	//         while (!flag.get()) {
892	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
893	>	//                 throw new AssertionFailedError("timed out");
894	>	//             Thread.yield();
895	>	//         }
896	>	//     }
897	>
898	>	public static class NPETask implements Callable<String> {
899	>	public String call() { throw new NullPointerException(); }
900	>	}
901	>
902	>	public static class CallableOne implements Callable<Integer> {
903	>	public Integer call() { return one; }
904	>	}
905	>
906	>	public class ShortRunnable extends CheckedRunnable {
907	>	protected void realRun() throws Throwable {
908	>	delay(SHORT_DELAY_MS);
909	>	}
910	>	}
911	>
912	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
913	>	protected void realRun() throws InterruptedException {
914	>	delay(SHORT_DELAY_MS);
915	>	}
916	>	}
917	>
918	>	public class SmallRunnable extends CheckedRunnable {
919	>	protected void realRun() throws Throwable {
920	>	delay(SMALL_DELAY_MS);
921	>	}
922	>	}
923	>
924	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
925	>	protected void realRun() {
926		try {
927	<	Thread.sleep(MEDIUM_DELAY_MS);
928	<	}
929	<	catch(InterruptedException success) {
930	<	}
927	>	delay(SMALL_DELAY_MS);
928	>	} catch (InterruptedException ok) {}
929	>	}
930	>	}
931	>
932	>	public class SmallCallable extends CheckedCallable {
933	>	protected Object realCall() throws InterruptedException {
934	>	delay(SMALL_DELAY_MS);
935	>	return Boolean.TRUE;
936	>	}
937	>	}
938	>
939	>	public class MediumRunnable extends CheckedRunnable {
940	>	protected void realRun() throws Throwable {
941	>	delay(MEDIUM_DELAY_MS);
942	>	}
943	>	}
944	>
945	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
946	>	protected void realRun() throws InterruptedException {
947	>	delay(MEDIUM_DELAY_MS);
948	>	}
949	>	}
950	>
951	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
952	>	return new CheckedRunnable() {
953	>	protected void realRun() {
954	>	try {
955	>	delay(timeoutMillis);
956	>	} catch (InterruptedException ok) {}
957	>	}};
958	>	}
959	>
960	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
961	>	protected void realRun() {
962	>	try {
963	>	delay(MEDIUM_DELAY_MS);
964	>	} catch (InterruptedException ok) {}
965	>	}
966	>	}
967	>
968	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
969	>	protected void realRun() {
970	>	try {
971	>	delay(LONG_DELAY_MS);
972	>	} catch (InterruptedException ok) {}
973		}
974		}
975
976		/**
977		* For use as ThreadFactory in constructors
978		*/
979	<	static class SimpleThreadFactory implements ThreadFactory{
980	<	public Thread newThread(Runnable r){
979	>	public static class SimpleThreadFactory implements ThreadFactory {
980	>	public Thread newThread(Runnable r) {
981		return new Thread(r);
982	<	}
982	>	}
983	>	}
984	>
985	>	public interface TrackedRunnable extends Runnable {
986	>	boolean isDone();
987	>	}
988	>
989	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
990	>	return new TrackedRunnable() {
991	>	private volatile boolean done = false;
992	>	public boolean isDone() { return done; }
993	>	public void run() {
994	>	try {
995	>	delay(timeoutMillis);
996	>	done = true;
997	>	} catch (InterruptedException ok) {}
998	>	}
999	>	};
1000		}
1001
1002	<	static class TrackedRunnable implements Runnable {
1003	<	volatile boolean done = false;
1002	>	public static class TrackedShortRunnable implements Runnable {
1003	>	public volatile boolean done = false;
1004		public void run() {
1005		try {
1006	<	Thread.sleep(SMALL_DELAY_MS);
1006	>	delay(SHORT_DELAY_MS);
1007		done = true;
1008	<	} catch(Exception e){
1009	<	}
1008	>	} catch (InterruptedException ok) {}
1009	>	}
1010	>	}
1011	>
1012	>	public static class TrackedSmallRunnable implements Runnable {
1013	>	public volatile boolean done = false;
1014	>	public void run() {
1015	>	try {
1016	>	delay(SMALL_DELAY_MS);
1017	>	done = true;
1018	>	} catch (InterruptedException ok) {}
1019	>	}
1020	>	}
1021	>
1022	>	public static class TrackedMediumRunnable implements Runnable {
1023	>	public volatile boolean done = false;
1024	>	public void run() {
1025	>	try {
1026	>	delay(MEDIUM_DELAY_MS);
1027	>	done = true;
1028	>	} catch (InterruptedException ok) {}
1029	>	}
1030	>	}
1031	>
1032	>	public static class TrackedLongRunnable implements Runnable {
1033	>	public volatile boolean done = false;
1034	>	public void run() {
1035	>	try {
1036	>	delay(LONG_DELAY_MS);
1037	>	done = true;
1038	>	} catch (InterruptedException ok) {}
1039		}
1040		}
1041
1042	<	static class TrackedCallable implements Callable {
1043	<	volatile boolean done = false;
1042	>	public static class TrackedNoOpRunnable implements Runnable {
1043	>	public volatile boolean done = false;
1044	>	public void run() {
1045	>	done = true;
1046	>	}
1047	>	}
1048	>
1049	>	public static class TrackedCallable implements Callable {
1050	>	public volatile boolean done = false;
1051		public Object call() {
1052		try {
1053	<	Thread.sleep(SMALL_DELAY_MS);
1053	>	delay(SMALL_DELAY_MS);
1054		done = true;
1055	<	} catch(Exception e){
361	<	}
1055	>	} catch (InterruptedException ok) {}
1056		return Boolean.TRUE;
1057		}
1058		}
1059
1060		/**
1061	+	* Analog of CheckedRunnable for RecursiveAction
1062	+	*/
1063	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1064	+	protected abstract void realCompute() throws Throwable;
1065	+
1066	+	public final void compute() {
1067	+	try {
1068	+	realCompute();
1069	+	} catch (Throwable t) {
1070	+	threadUnexpectedException(t);
1071	+	}
1072	+	}
1073	+	}
1074	+
1075	+	/**
1076	+	* Analog of CheckedCallable for RecursiveTask
1077	+	*/
1078	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1079	+	protected abstract T realCompute() throws Throwable;
1080	+
1081	+	public final T compute() {
1082	+	try {
1083	+	return realCompute();
1084	+	} catch (Throwable t) {
1085	+	threadUnexpectedException(t);
1086	+	return null;
1087	+	}
1088	+	}
1089	+	}
1090	+
1091	+	/**
1092		* For use as RejectedExecutionHandler in constructors
1093		*/
1094	<	static class NoOpREHandler implements RejectedExecutionHandler{
1095	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1094	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1095	>	public void rejectedExecution(Runnable r,
1096	>	ThreadPoolExecutor executor) {}
1097	>	}
1098	>
1099	>	/**
1100	>	* A CyclicBarrier that fails with AssertionFailedErrors instead
1101	>	* of throwing checked exceptions.
1102	>	*/
1103	>	public class CheckedBarrier extends CyclicBarrier {
1104	>	public CheckedBarrier(int parties) { super(parties); }
1105	>
1106	>	public int await() {
1107	>	try {
1108	>	return super.await();
1109	>	} catch (Exception e) {
1110	>	AssertionFailedError afe =
1111	>	new AssertionFailedError("Unexpected exception: " + e);
1112	>	afe.initCause(e);
1113	>	throw afe;
1114	>	}
1115	>	}
1116	>	}
1117	>
1118	>	void checkEmpty(BlockingQueue q) {
1119	>	try {
1120	>	assertTrue(q.isEmpty());
1121	>	assertEquals(0, q.size());
1122	>	assertNull(q.peek());
1123	>	assertNull(q.poll());
1124	>	assertNull(q.poll(0, MILLISECONDS));
1125	>	assertEquals(q.toString(), "[]");
1126	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1127	>	assertFalse(q.iterator().hasNext());
1128	>	try {
1129	>	q.element();
1130	>	shouldThrow();
1131	>	} catch (NoSuchElementException success) {}
1132	>	try {
1133	>	q.iterator().next();
1134	>	shouldThrow();
1135	>	} catch (NoSuchElementException success) {}
1136	>	try {
1137	>	q.remove();
1138	>	shouldThrow();
1139	>	} catch (NoSuchElementException success) {}
1140	>	} catch (InterruptedException ie) {
1141	>	threadUnexpectedException(ie);
1142	>	}
1143	>	}
1144	>
1145	>	@SuppressWarnings("unchecked")
1146	>	<T> T serialClone(T o) {
1147	>	try {
1148	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1149	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1150	>	oos.writeObject(o);
1151	>	oos.flush();
1152	>	oos.close();
1153	>	ByteArrayInputStream bin =
1154	>	new ByteArrayInputStream(bos.toByteArray());
1155	>	ObjectInputStream ois = new ObjectInputStream(bin);
1156	>	return (T) ois.readObject();
1157	>	} catch (Throwable t) {
1158	>	threadUnexpectedException(t);
1159	>	return null;
1160	>	}
1161		}
372	–
373	–
1162		}

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