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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.7 by dl, Fri Jan 2 21:06:38 2004 UTC vs.
Revision 1.37 by jsr166, Mon Oct 11 06:36:20 2010 UTC

#	Line 2 | Line 2
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/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9
10		import junit.framework.*;
11		import java.util.*;
12		import java.util.concurrent.*;
13	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
14		import java.util.concurrent.locks.*;
15		import java.io.*;
16
17		public class AbstractQueuedSynchronizerTest extends JSR166TestCase {
18		public static void main(String[] args) {
19	<	junit.textui.TestRunner.run (suite());
19	>	junit.textui.TestRunner.run(suite());
20		}
21		public static Test suite() {
22		return new TestSuite(AbstractQueuedSynchronizerTest.class);
23		}
24
25		/**
26	<	* A simple mutex class, from the AbstractQueuedSynchronizer
27	<	* javadoc.  All tests exercise this as a sample user extension.
28	<	* Other methods/features of AbstractQueuedSynchronizerTest are
29	<	* tested implicitly in ReentrantLock, ReentrantReadWriteLock, and
30	<	* Semaphore test classes
31	<	*/
32	<	static class Mutex implements Lock, java.io.Serializable {
33	<	private static class Sync extends AbstractQueuedSynchronizer {
34	<	boolean isLocked() { return getState() == 1; }
35	<
36	<	public boolean tryAcquireExclusive(boolean isQueued, int acquires) {
37	<	assert acquires == 1; // Does not use multiple acquires
38	<	return compareAndSetState(0, 1);
38	<	}
39	<
40	<	public boolean tryReleaseExclusive(int releases) {
41	<	setState(0);
42	<	return true;
43	<	}
44	<
45	<	public void checkConditionAccess(Thread thread, boolean waiting) {
46	<	if (getState() == 0) throw new IllegalMonitorStateException();
47	<	}
48	<
49	<	Condition newCondition() { return new ConditionObject(); }
50	<
51	<	private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
52	<	s.defaultReadObject();
53	<	setState(0); // reset to unlocked state
54	<	}
26	>	* A simple mutex class, adapted from the
27	>	* AbstractQueuedSynchronizer javadoc.  Exclusive acquire tests
28	>	* exercise this as a sample user extension.  Other
29	>	* methods/features of AbstractQueuedSynchronizerTest are tested
30	>	* via other test classes, including those for ReentrantLock,
31	>	* ReentrantReadWriteLock, and Semaphore
32	>	*/
33	>	static class Mutex extends AbstractQueuedSynchronizer {
34	>	public boolean isHeldExclusively() { return getState() == 1; }
35	>
36	>	public boolean tryAcquire(int acquires) {
37	>	assertEquals(1, acquires);
38	>	return compareAndSetState(0, 1);
39		}
40	<
41	<	private final Sync sync = new Sync();
42	<	public boolean tryLock() {
43	<	return sync.tryAcquireExclusive(false, 1);
40	>
41	>	public boolean tryRelease(int releases) {
42	>	if (getState() == 0) throw new IllegalMonitorStateException();
43	>	setState(0);
44	>	return true;
45		}
46	<	public void lock() {
47	<	sync.acquireExclusiveUninterruptibly(1);
46	>
47	>	public AbstractQueuedSynchronizer.ConditionObject newCondition() {
48	>	return new AbstractQueuedSynchronizer.ConditionObject();
49		}
50	<	public void lockInterruptibly() throws InterruptedException {
51	<	sync.acquireExclusiveInterruptibly(1);
50	>
51	>	}
52	>
53	>
54	>	/**
55	>	* A simple latch class, to test shared mode.
56	>	*/
57	>	static class BooleanLatch extends AbstractQueuedSynchronizer {
58	>	public boolean isSignalled() { return getState() != 0; }
59	>
60	>	public int tryAcquireShared(int ignore) {
61	>	return isSignalled()? 1 : -1;
62		}
63	<	public boolean tryLock(long timeout, TimeUnit unit) throws InterruptedException {
64	<	return sync.acquireExclusiveTimed(1, unit.toNanos(timeout));
63	>
64	>	public boolean tryReleaseShared(int ignore) {
65	>	setState(1);
66	>	return true;
67		}
70	–	public void unlock() { sync.releaseExclusive(1); }
71	–	public Condition newCondition() { return sync.newCondition(); }
72	–	public boolean isLocked() { return sync.isLocked(); }
73	–	public boolean hasQueuedThreads() { return sync.hasQueuedThreads(); }
68		}
69
70		/**
71	<	* A runnable calling lockInterruptibly
72	<	*/
73	<	class InterruptibleLockRunnable implements Runnable {
74	<	final Mutex lock;
75	<	InterruptibleLockRunnable(Mutex l) { lock = l; }
76	<	public void run() {
77	<	try {
78	<	lock.lockInterruptibly();
85	<	} catch(InterruptedException success){}
71	>	* A runnable calling acquireInterruptibly that does not expect to
72	>	* be interrupted.
73	>	*/
74	>	class InterruptibleSyncRunnable extends CheckedRunnable {
75	>	final Mutex sync;
76	>	InterruptibleSyncRunnable(Mutex l) { sync = l; }
77	>	public void realRun() throws InterruptedException {
78	>	sync.acquireInterruptibly(1);
79		}
80		}
81
82
83		/**
84	<	* A runnable calling lockInterruptibly that expects to be
85	<	* interrupted
84	>	* A runnable calling acquireInterruptibly that expects to be
85	>	* interrupted.
86		*/
87	<	class InterruptedLockRunnable implements Runnable {
88	<	final Mutex lock;
89	<	InterruptedLockRunnable(Mutex l) { lock = l; }
90	<	public void run() {
91	<	try {
99	<	lock.lockInterruptibly();
100	<	threadShouldThrow();
101	<	} catch(InterruptedException success){}
87	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
88	>	final Mutex sync;
89	>	InterruptedSyncRunnable(Mutex l) { sync = l; }
90	>	public void realRun() throws InterruptedException {
91	>	sync.acquireInterruptibly(1);
92		}
93		}
94	<
94	>
95	>	/**
96	>	* isHeldExclusively is false upon construction
97	>	*/
98	>	public void testIsHeldExclusively() {
99	>	Mutex rl = new Mutex();
100	>	assertFalse(rl.isHeldExclusively());
101	>	}
102	>
103		/**
104	<	* locking an unlocked lock succeeds
104	>	* acquiring released sync succeeds
105		*/
106	<	public void testLock() {
107	<	Mutex rl = new Mutex();
108	<	rl.lock();
109	<	assertTrue(rl.isLocked());
110	<	rl.unlock();
106	>	public void testAcquire() {
107	>	Mutex rl = new Mutex();
108	>	rl.acquire(1);
109	>	assertTrue(rl.isHeldExclusively());
110	>	rl.release(1);
111	>	assertFalse(rl.isHeldExclusively());
112		}
113
114		/**
115	<	* tryLock on an unlocked lock succeeds
115	>	* tryAcquire on an released sync succeeds
116		*/
117	<	public void testTryLock() {
118	<	Mutex rl = new Mutex();
119	<	assertTrue(rl.tryLock());
120	<	assertTrue(rl.isLocked());
121	<	rl.unlock();
117	>	public void testTryAcquire() {
118	>	Mutex rl = new Mutex();
119	>	assertTrue(rl.tryAcquire(1));
120	>	assertTrue(rl.isHeldExclusively());
121	>	rl.release(1);
122		}
123
124		/**
125		* hasQueuedThreads reports whether there are waiting threads
126		*/
127	<	public void testhasQueuedThreads() {
128	<	final Mutex lock = new Mutex();
129	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
130	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
131	<	try {
132	<	assertFalse(lock.hasQueuedThreads());
133	<	lock.lock();
134	<	t1.start();
135	<	Thread.sleep(SHORT_DELAY_MS);
136	<	assertTrue(lock.hasQueuedThreads());
137	<	t2.start();
138	<	Thread.sleep(SHORT_DELAY_MS);
139	<	assertTrue(lock.hasQueuedThreads());
140	<	t1.interrupt();
141	<	Thread.sleep(SHORT_DELAY_MS);
142	<	assertTrue(lock.hasQueuedThreads());
143	<	lock.unlock();
144	<	Thread.sleep(SHORT_DELAY_MS);
145	<	assertFalse(lock.hasQueuedThreads());
146	<	t1.join();
147	<	t2.join();
149	<	} catch(Exception e){
150	<	unexpectedException();
151	<	}
152	<	}
127	>	public void testhasQueuedThreads() throws InterruptedException {
128	>	final Mutex sync = new Mutex();
129	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
130	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
131	>	assertFalse(sync.hasQueuedThreads());
132	>	sync.acquire(1);
133	>	t1.start();
134	>	Thread.sleep(SHORT_DELAY_MS);
135	>	assertTrue(sync.hasQueuedThreads());
136	>	t2.start();
137	>	Thread.sleep(SHORT_DELAY_MS);
138	>	assertTrue(sync.hasQueuedThreads());
139	>	t1.interrupt();
140	>	Thread.sleep(SHORT_DELAY_MS);
141	>	assertTrue(sync.hasQueuedThreads());
142	>	sync.release(1);
143	>	Thread.sleep(SHORT_DELAY_MS);
144	>	assertFalse(sync.hasQueuedThreads());
145	>	t1.join();
146	>	t2.join();
147	>	}
148
149		/**
150	<	* timed tryLock is interruptible.
150	>	* isQueued(null) throws NPE
151		*/
152	<	public void testInterruptedException2() {
153	<	final Mutex lock = new Mutex();
154	<	lock.lock();
155	<	Thread t = new Thread(new Runnable() {
156	<	public void run() {
157	<	try {
163	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
164	<	threadShouldThrow();
165	<	} catch(InterruptedException success){}
166	<	}
167	<	});
168	<	try {
169	<	t.start();
170	<	t.interrupt();
171	<	} catch(Exception e){
172	<	unexpectedException();
173	<	}
152	>	public void testIsQueuedNPE() {
153	>	final Mutex sync = new Mutex();
154	>	try {
155	>	sync.isQueued(null);
156	>	shouldThrow();
157	>	} catch (NullPointerException success) {}
158		}
159
160	+	/**
161	+	* isQueued reports whether a thread is queued.
162	+	*/
163	+	public void testIsQueued() throws InterruptedException {
164	+	final Mutex sync = new Mutex();
165	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
166	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
167	+	assertFalse(sync.isQueued(t1));
168	+	assertFalse(sync.isQueued(t2));
169	+	sync.acquire(1);
170	+	t1.start();
171	+	Thread.sleep(SHORT_DELAY_MS);
172	+	assertTrue(sync.isQueued(t1));
173	+	t2.start();
174	+	Thread.sleep(SHORT_DELAY_MS);
175	+	assertTrue(sync.isQueued(t1));
176	+	assertTrue(sync.isQueued(t2));
177	+	t1.interrupt();
178	+	Thread.sleep(SHORT_DELAY_MS);
179	+	assertFalse(sync.isQueued(t1));
180	+	assertTrue(sync.isQueued(t2));
181	+	sync.release(1);
182	+	Thread.sleep(SHORT_DELAY_MS);
183	+	assertFalse(sync.isQueued(t1));
184	+	Thread.sleep(SHORT_DELAY_MS);
185	+	assertFalse(sync.isQueued(t2));
186	+	t1.join();
187	+	t2.join();
188	+	}
189
190		/**
191	<	* TryLock on a locked lock fails
191	>	* getFirstQueuedThread returns first waiting thread or null if none
192		*/
193	<	public void testTryLockWhenLocked() {
194	<	final Mutex lock = new Mutex();
195	<	lock.lock();
196	<	Thread t = new Thread(new Runnable() {
197	<	public void run() {
198	<	threadAssertFalse(lock.tryLock());
199	<	}
200	<	});
201	<	try {
202	<	t.start();
203	<	t.join();
204	<	lock.unlock();
205	<	} catch(Exception e){
206	<	unexpectedException();
207	<	}
208	<	}
193	>	public void testGetFirstQueuedThread() throws InterruptedException {
194	>	final Mutex sync = new Mutex();
195	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
196	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
197	>	assertNull(sync.getFirstQueuedThread());
198	>	sync.acquire(1);
199	>	t1.start();
200	>	Thread.sleep(SHORT_DELAY_MS);
201	>	assertEquals(t1, sync.getFirstQueuedThread());
202	>	t2.start();
203	>	Thread.sleep(SHORT_DELAY_MS);
204	>	assertEquals(t1, sync.getFirstQueuedThread());
205	>	t1.interrupt();
206	>	Thread.sleep(SHORT_DELAY_MS);
207	>	Thread.sleep(SHORT_DELAY_MS);
208	>	assertEquals(t2, sync.getFirstQueuedThread());
209	>	sync.release(1);
210	>	Thread.sleep(SHORT_DELAY_MS);
211	>	assertNull(sync.getFirstQueuedThread());
212	>	t1.join();
213	>	t2.join();
214	>	}
215	>
216
217		/**
218	<	* Timed tryLock on a locked lock times out
218	>	* hasContended reports false if no thread has ever blocked, else true
219		*/
220	<	public void testTryLock_Timeout() {
221	<	final Mutex lock = new Mutex();
222	<	lock.lock();
223	<	Thread t = new Thread(new Runnable() {
224	<	public void run() {
225	<	try {
226	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
227	<	} catch (Exception ex) {
228	<	threadUnexpectedException();
229	<	}
230	<	}
231	<	});
232	<	try {
233	<	t.start();
234	<	t.join();
235	<	lock.unlock();
236	<	} catch(Exception e){
237	<	unexpectedException();
238	<	}
239	<	}
220	<
221	<
222	<	/**
223	<	* isLocked is true when locked and false when not
224	<	*/
225	<	public void testIsLocked() {
226	<	final Mutex lock = new Mutex();
227	<	lock.lock();
228	<	assertTrue(lock.isLocked());
229	<	lock.unlock();
230	<	assertFalse(lock.isLocked());
231	<	Thread t = new Thread(new Runnable() {
232	<	public void run() {
233	<	lock.lock();
234	<	try {
235	<	Thread.sleep(SMALL_DELAY_MS);
236	<	}
237	<	catch(Exception e) {
238	<	threadUnexpectedException();
239	<	}
240	<	lock.unlock();
241	<	}
242	<	});
243	<	try {
244	<	t.start();
245	<	Thread.sleep(SHORT_DELAY_MS);
246	<	assertTrue(lock.isLocked());
247	<	t.join();
248	<	assertFalse(lock.isLocked());
249	<	} catch(Exception e){
250	<	unexpectedException();
251	<	}
220	>	public void testHasContended() throws InterruptedException {
221	>	final Mutex sync = new Mutex();
222	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
223	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
224	>	assertFalse(sync.hasContended());
225	>	sync.acquire(1);
226	>	t1.start();
227	>	Thread.sleep(SHORT_DELAY_MS);
228	>	assertTrue(sync.hasContended());
229	>	t2.start();
230	>	Thread.sleep(SHORT_DELAY_MS);
231	>	assertTrue(sync.hasContended());
232	>	t1.interrupt();
233	>	Thread.sleep(SHORT_DELAY_MS);
234	>	assertTrue(sync.hasContended());
235	>	sync.release(1);
236	>	Thread.sleep(SHORT_DELAY_MS);
237	>	assertTrue(sync.hasContended());
238	>	t1.join();
239	>	t2.join();
240		}
241
242	+	/**
243	+	* getQueuedThreads includes waiting threads
244	+	*/
245	+	public void testGetQueuedThreads() throws InterruptedException {
246	+	final Mutex sync = new Mutex();
247	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
248	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
249	+	assertTrue(sync.getQueuedThreads().isEmpty());
250	+	sync.acquire(1);
251	+	assertTrue(sync.getQueuedThreads().isEmpty());
252	+	t1.start();
253	+	Thread.sleep(SHORT_DELAY_MS);
254	+	assertTrue(sync.getQueuedThreads().contains(t1));
255	+	t2.start();
256	+	Thread.sleep(SHORT_DELAY_MS);
257	+	assertTrue(sync.getQueuedThreads().contains(t1));
258	+	assertTrue(sync.getQueuedThreads().contains(t2));
259	+	t1.interrupt();
260	+	Thread.sleep(SHORT_DELAY_MS);
261	+	assertFalse(sync.getQueuedThreads().contains(t1));
262	+	assertTrue(sync.getQueuedThreads().contains(t2));
263	+	sync.release(1);
264	+	Thread.sleep(SHORT_DELAY_MS);
265	+	assertTrue(sync.getQueuedThreads().isEmpty());
266	+	t1.join();
267	+	t2.join();
268	+	}
269
270		/**
271	<	* lockInterruptibly is interruptible.
271	>	* getExclusiveQueuedThreads includes waiting threads
272		*/
273	<	public void testLockInterruptibly1() {
274	<	final Mutex lock = new Mutex();
275	<	lock.lock();
276	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
277	<	try {
278	<	t.start();
279	<	t.interrupt();
280	<	lock.unlock();
281	<	t.join();
282	<	} catch(Exception e){
283	<	unexpectedException();
284	<	}
285	<	}
273	>	public void testGetExclusiveQueuedThreads() throws InterruptedException {
274	>	final Mutex sync = new Mutex();
275	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
276	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
277	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
278	>	sync.acquire(1);
279	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
280	>	t1.start();
281	>	Thread.sleep(SHORT_DELAY_MS);
282	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
283	>	t2.start();
284	>	Thread.sleep(SHORT_DELAY_MS);
285	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
286	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
287	>	t1.interrupt();
288	>	Thread.sleep(SHORT_DELAY_MS);
289	>	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
290	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
291	>	sync.release(1);
292	>	Thread.sleep(SHORT_DELAY_MS);
293	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
294	>	t1.join();
295	>	t2.join();
296	>	}
297
298		/**
299	<	* lockInterruptibly succeeds when unlocked, else is interruptible
299	>	* getSharedQueuedThreads does not include exclusively waiting threads
300		*/
301	<	public void testLockInterruptibly2() {
302	<	final Mutex lock = new Mutex();
303	<	try {
304	<	lock.lockInterruptibly();
305	<	} catch(Exception e) {
306	<	unexpectedException();
307	<	}
308	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
309	<	try {
310	<	t.start();
311	<	t.interrupt();
312	<	assertTrue(lock.isLocked());
313	<	t.join();
314	<	} catch(Exception e){
315	<	unexpectedException();
316	<	}
301	>	public void testGetSharedQueuedThreads() throws InterruptedException {
302	>	final Mutex sync = new Mutex();
303	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
304	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
305	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
306	>	sync.acquire(1);
307	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
308	>	t1.start();
309	>	Thread.sleep(SHORT_DELAY_MS);
310	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
311	>	t2.start();
312	>	Thread.sleep(SHORT_DELAY_MS);
313	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
314	>	t1.interrupt();
315	>	Thread.sleep(SHORT_DELAY_MS);
316	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
317	>	sync.release(1);
318	>	Thread.sleep(SHORT_DELAY_MS);
319	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
320	>	t1.join();
321	>	t2.join();
322	>	}
323	>
324	>	/**
325	>	* tryAcquireNanos is interruptible.
326	>	*/
327	>	public void testInterruptedException2() throws InterruptedException {
328	>	final Mutex sync = new Mutex();
329	>	sync.acquire(1);
330	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
331	>	public void realRun() throws InterruptedException {
332	>	sync.tryAcquireNanos(1, MILLISECONDS.toNanos(MEDIUM_DELAY_MS));
333	>	}});
334	>
335	>	t.start();
336	>	Thread.sleep(SHORT_DELAY_MS);
337	>	t.interrupt();
338	>	t.join();
339	>	}
340	>
341	>
342	>	/**
343	>	* TryAcquire on exclusively held sync fails
344	>	*/
345	>	public void testTryAcquireWhenSynced() throws InterruptedException {
346	>	final Mutex sync = new Mutex();
347	>	sync.acquire(1);
348	>	Thread t = new Thread(new CheckedRunnable() {
349	>	public void realRun() {
350	>	assertFalse(sync.tryAcquire(1));
351	>	}});
352	>
353	>	t.start();
354	>	t.join();
355	>	sync.release(1);
356	>	}
357	>
358	>	/**
359	>	* tryAcquireNanos on an exclusively held sync times out
360	>	*/
361	>	public void testAcquireNanos_Timeout() throws InterruptedException {
362	>	final Mutex sync = new Mutex();
363	>	sync.acquire(1);
364	>	Thread t = new Thread(new CheckedRunnable() {
365	>	public void realRun() throws InterruptedException {
366	>	long nanos = MILLISECONDS.toNanos(SHORT_DELAY_MS);
367	>	assertFalse(sync.tryAcquireNanos(1, nanos));
368	>	}});
369	>
370	>	t.start();
371	>	t.join();
372	>	sync.release(1);
373	>	}
374	>
375	>
376	>	/**
377	>	* getState is true when acquired and false when not
378	>	*/
379	>	public void testGetState() throws InterruptedException {
380	>	final Mutex sync = new Mutex();
381	>	sync.acquire(1);
382	>	assertTrue(sync.isHeldExclusively());
383	>	sync.release(1);
384	>	assertFalse(sync.isHeldExclusively());
385	>	Thread t = new Thread(new CheckedRunnable() {
386	>	public void realRun() throws InterruptedException {
387	>	sync.acquire(1);
388	>	Thread.sleep(SMALL_DELAY_MS);
389	>	sync.release(1);
390	>	}});
391	>
392	>	t.start();
393	>	Thread.sleep(SHORT_DELAY_MS);
394	>	assertTrue(sync.isHeldExclusively());
395	>	t.join();
396	>	assertFalse(sync.isHeldExclusively());
397	>	}
398	>
399	>
400	>	/**
401	>	* acquireInterruptibly is interruptible.
402	>	*/
403	>	public void testAcquireInterruptibly1() throws InterruptedException {
404	>	final Mutex sync = new Mutex();
405	>	sync.acquire(1);
406	>	Thread t = new Thread(new InterruptedSyncRunnable(sync));
407	>
408	>	t.start();
409	>	Thread.sleep(SHORT_DELAY_MS);
410	>	t.interrupt();
411	>	Thread.sleep(SHORT_DELAY_MS);
412	>	sync.release(1);
413	>	t.join();
414	>	}
415	>
416	>	/**
417	>	* acquireInterruptibly succeeds when released, else is interruptible
418	>	*/
419	>	public void testAcquireInterruptibly2() throws InterruptedException {
420	>	final Mutex sync = new Mutex();
421	>	sync.acquireInterruptibly(1);
422	>	Thread t = new Thread(new InterruptedSyncRunnable(sync));
423	>	t.start();
424	>	Thread.sleep(SHORT_DELAY_MS);
425	>	t.interrupt();
426	>	assertTrue(sync.isHeldExclusively());
427	>	t.join();
428	>	}
429	>
430	>	/**
431	>	* owns is true for a condition created by sync else false
432	>	*/
433	>	public void testOwns() {
434	>	final Mutex sync = new Mutex();
435	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
436	>	final Mutex sync2 = new Mutex();
437	>	assertTrue(sync.owns(c));
438	>	assertFalse(sync2.owns(c));
439		}
440
441		/**
442	<	* Calling await without holding lock throws IllegalMonitorStateException
442	>	* Calling await without holding sync throws IllegalMonitorStateException
443		*/
444	<	public void testAwait_IllegalMonitor() {
445	<	final Mutex lock = new Mutex();
446	<	final Condition c = lock.newCondition();
444	>	public void testAwait_IllegalMonitor() throws InterruptedException {
445	>	final Mutex sync = new Mutex();
446	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
447		try {
448		c.await();
449		shouldThrow();
450	<	}
303	<	catch (IllegalMonitorStateException success) {
304	<	}
305	<	catch (Exception ex) {
306	<	unexpectedException();
307	<	}
450	>	} catch (IllegalMonitorStateException success) {}
451		}
452
453		/**
454	<	* Calling signal without holding lock throws IllegalMonitorStateException
454	>	* Calling signal without holding sync throws IllegalMonitorStateException
455		*/
456		public void testSignal_IllegalMonitor() {
457	<	final Mutex lock = new Mutex();
458	<	final Condition c = lock.newCondition();
457	>	final Mutex sync = new Mutex();
458	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
459		try {
460		c.signal();
461		shouldThrow();
462	<	}
320	<	catch (IllegalMonitorStateException success) {
321	<	}
322	<	catch (Exception ex) {
323	<	unexpectedException();
324	<	}
462	>	} catch (IllegalMonitorStateException success) {}
463		}
464
465		/**
466		* awaitNanos without a signal times out
467		*/
468	<	public void testAwaitNanos_Timeout() {
469	<	final Mutex lock = new Mutex();
470	<	final Condition c = lock.newCondition();
471	<	try {
472	<	lock.lock();
473	<	long t = c.awaitNanos(100);
474	<	assertTrue(t <= 0);
337	<	lock.unlock();
338	<	}
339	<	catch (Exception ex) {
340	<	unexpectedException();
341	<	}
468	>	public void testAwaitNanos_Timeout() throws InterruptedException {
469	>	final Mutex sync = new Mutex();
470	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
471	>	sync.acquire(1);
472	>	long t = c.awaitNanos(100);
473	>	assertTrue(t <= 0);
474	>	sync.release(1);
475		}
476
477		/**
478	<	*  timed await without a signal times out
478	>	* Timed await without a signal times out
479		*/
480	<	public void testAwait_Timeout() {
481	<	final Mutex lock = new Mutex();
482	<	final Condition c = lock.newCondition();
483	<	try {
484	<	lock.lock();
485	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
353	<	lock.unlock();
354	<	}
355	<	catch (Exception ex) {
356	<	unexpectedException();
357	<	}
480	>	public void testAwait_Timeout() throws InterruptedException {
481	>	final Mutex sync = new Mutex();
482	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
483	>	sync.acquire(1);
484	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
485	>	sync.release(1);
486		}
487
488		/**
489		* awaitUntil without a signal times out
490		*/
491	<	public void testAwaitUntil_Timeout() {
492	<	final Mutex lock = new Mutex();
493	<	final Condition c = lock.newCondition();
494	<	try {
495	<	lock.lock();
496	<	java.util.Date d = new java.util.Date();
497	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
370	<	lock.unlock();
371	<	}
372	<	catch (Exception ex) {
373	<	unexpectedException();
374	<	}
491	>	public void testAwaitUntil_Timeout() throws InterruptedException {
492	>	final Mutex sync = new Mutex();
493	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
494	>	sync.acquire(1);
495	>	java.util.Date d = new java.util.Date();
496	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
497	>	sync.release(1);
498		}
499
500		/**
501		* await returns when signalled
502		*/
503	<	public void testAwait() {
504	<	final Mutex lock = new Mutex();
505	<	final Condition c = lock.newCondition();
506	<	Thread t = new Thread(new Runnable() {
507	<	public void run() {
508	<	try {
509	<	lock.lock();
510	<	c.await();
511	<	lock.unlock();
512	<	}
513	<	catch(InterruptedException e) {
514	<	threadUnexpectedException();
515	<	}
516	<	}
517	<	});
518	<
519	<	try {
520	<	t.start();
521	<	Thread.sleep(SHORT_DELAY_MS);
522	<	lock.lock();
523	<	c.signal();
524	<	lock.unlock();
525	<	t.join(SHORT_DELAY_MS);
526	<	assertFalse(t.isAlive());
527	<	}
528	<	catch (Exception ex) {
529	<	unexpectedException();
530	<	}
503	>	public void testAwait() throws InterruptedException {
504	>	final Mutex sync = new Mutex();
505	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
506	>	Thread t = new Thread(new CheckedRunnable() {
507	>	public void realRun() throws InterruptedException {
508	>	sync.acquire(1);
509	>	c.await();
510	>	sync.release(1);
511	>	}});
512	>
513	>	t.start();
514	>	Thread.sleep(SHORT_DELAY_MS);
515	>	sync.acquire(1);
516	>	c.signal();
517	>	sync.release(1);
518	>	t.join(SHORT_DELAY_MS);
519	>	assertFalse(t.isAlive());
520	>	}
521	>
522	>
523	>
524	>	/**
525	>	* hasWaiters throws NPE if null
526	>	*/
527	>	public void testHasWaitersNPE() {
528	>	final Mutex sync = new Mutex();
529	>	try {
530	>	sync.hasWaiters(null);
531	>	shouldThrow();
532	>	} catch (NullPointerException success) {}
533	>	}
534	>
535	>	/**
536	>	* getWaitQueueLength throws NPE if null
537	>	*/
538	>	public void testGetWaitQueueLengthNPE() {
539	>	final Mutex sync = new Mutex();
540	>	try {
541	>	sync.getWaitQueueLength(null);
542	>	shouldThrow();
543	>	} catch (NullPointerException success) {}
544	>	}
545	>
546	>
547	>	/**
548	>	* getWaitingThreads throws NPE if null
549	>	*/
550	>	public void testGetWaitingThreadsNPE() {
551	>	final Mutex sync = new Mutex();
552	>	try {
553	>	sync.getWaitingThreads(null);
554	>	shouldThrow();
555	>	} catch (NullPointerException success) {}
556		}
557	<
557	>
558	>
559	>	/**
560	>	* hasWaiters throws IAE if not owned
561	>	*/
562	>	public void testHasWaitersIAE() {
563	>	final Mutex sync = new Mutex();
564	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
565	>	final Mutex sync2 = new Mutex();
566	>	try {
567	>	sync2.hasWaiters(c);
568	>	shouldThrow();
569	>	} catch (IllegalArgumentException success) {}
570	>	}
571	>
572	>	/**
573	>	* hasWaiters throws IMSE if not synced
574	>	*/
575	>	public void testHasWaitersIMSE() {
576	>	final Mutex sync = new Mutex();
577	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
578	>	try {
579	>	sync.hasWaiters(c);
580	>	shouldThrow();
581	>	} catch (IllegalMonitorStateException success) {}
582	>	}
583	>
584	>
585	>	/**
586	>	* getWaitQueueLength throws IAE if not owned
587	>	*/
588	>	public void testGetWaitQueueLengthIAE() {
589	>	final Mutex sync = new Mutex();
590	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
591	>	final Mutex sync2 = new Mutex();
592	>	try {
593	>	sync2.getWaitQueueLength(c);
594	>	shouldThrow();
595	>	} catch (IllegalArgumentException success) {}
596	>	}
597	>
598	>	/**
599	>	* getWaitQueueLength throws IMSE if not synced
600	>	*/
601	>	public void testGetWaitQueueLengthIMSE() {
602	>	final Mutex sync = new Mutex();
603	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
604	>	try {
605	>	sync.getWaitQueueLength(c);
606	>	shouldThrow();
607	>	} catch (IllegalMonitorStateException success) {}
608	>	}
609	>
610	>
611	>	/**
612	>	* getWaitingThreads throws IAE if not owned
613	>	*/
614	>	public void testGetWaitingThreadsIAE() {
615	>	final Mutex sync = new Mutex();
616	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
617	>	final Mutex sync2 = new Mutex();
618	>	try {
619	>	sync2.getWaitingThreads(c);
620	>	shouldThrow();
621	>	} catch (IllegalArgumentException success) {}
622	>	}
623	>
624	>	/**
625	>	* getWaitingThreads throws IMSE if not synced
626	>	*/
627	>	public void testGetWaitingThreadsIMSE() {
628	>	final Mutex sync = new Mutex();
629	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
630	>	try {
631	>	sync.getWaitingThreads(c);
632	>	shouldThrow();
633	>	} catch (IllegalMonitorStateException success) {}
634	>	}
635	>
636	>
637	>
638	>	/**
639	>	* hasWaiters returns true when a thread is waiting, else false
640	>	*/
641	>	public void testHasWaiters() throws InterruptedException {
642	>	final Mutex sync = new Mutex();
643	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
644	>	Thread t = new Thread(new CheckedRunnable() {
645	>	public void realRun() throws InterruptedException {
646	>	sync.acquire(1);
647	>	assertFalse(sync.hasWaiters(c));
648	>	assertEquals(0, sync.getWaitQueueLength(c));
649	>	c.await();
650	>	sync.release(1);
651	>	}});
652	>
653	>	t.start();
654	>	Thread.sleep(SHORT_DELAY_MS);
655	>	sync.acquire(1);
656	>	assertTrue(sync.hasWaiters(c));
657	>	assertEquals(1, sync.getWaitQueueLength(c));
658	>	c.signal();
659	>	sync.release(1);
660	>	Thread.sleep(SHORT_DELAY_MS);
661	>	sync.acquire(1);
662	>	assertFalse(sync.hasWaiters(c));
663	>	assertEquals(0, sync.getWaitQueueLength(c));
664	>	sync.release(1);
665	>	t.join(SHORT_DELAY_MS);
666	>	assertFalse(t.isAlive());
667	>	}
668	>
669	>	/**
670	>	* getWaitQueueLength returns number of waiting threads
671	>	*/
672	>	public void testGetWaitQueueLength() throws InterruptedException {
673	>	final Mutex sync = new Mutex();
674	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
675	>	Thread t1 = new Thread(new CheckedRunnable() {
676	>	public void realRun() throws InterruptedException {
677	>	sync.acquire(1);
678	>	assertFalse(sync.hasWaiters(c));
679	>	assertEquals(0, sync.getWaitQueueLength(c));
680	>	c.await();
681	>	sync.release(1);
682	>	}});
683	>
684	>	Thread t2 = new Thread(new CheckedRunnable() {
685	>	public void realRun() throws InterruptedException {
686	>	sync.acquire(1);
687	>	assertTrue(sync.hasWaiters(c));
688	>	assertEquals(1, sync.getWaitQueueLength(c));
689	>	c.await();
690	>	sync.release(1);
691	>	}});
692	>
693	>	t1.start();
694	>	Thread.sleep(SHORT_DELAY_MS);
695	>	t2.start();
696	>	Thread.sleep(SHORT_DELAY_MS);
697	>	sync.acquire(1);
698	>	assertTrue(sync.hasWaiters(c));
699	>	assertEquals(2, sync.getWaitQueueLength(c));
700	>	c.signalAll();
701	>	sync.release(1);
702	>	Thread.sleep(SHORT_DELAY_MS);
703	>	sync.acquire(1);
704	>	assertFalse(sync.hasWaiters(c));
705	>	assertEquals(0, sync.getWaitQueueLength(c));
706	>	sync.release(1);
707	>	t1.join(SHORT_DELAY_MS);
708	>	t2.join(SHORT_DELAY_MS);
709	>	assertFalse(t1.isAlive());
710	>	assertFalse(t2.isAlive());
711	>	}
712	>
713	>	/**
714	>	* getWaitingThreads returns only and all waiting threads
715	>	*/
716	>	public void testGetWaitingThreads() throws InterruptedException {
717	>	final Mutex sync = new Mutex();
718	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
719	>	Thread t1 = new Thread(new CheckedRunnable() {
720	>	public void realRun() throws InterruptedException {
721	>	sync.acquire(1);
722	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
723	>	c.await();
724	>	sync.release(1);
725	>	}});
726	>
727	>	Thread t2 = new Thread(new CheckedRunnable() {
728	>	public void realRun() throws InterruptedException {
729	>	sync.acquire(1);
730	>	assertFalse(sync.getWaitingThreads(c).isEmpty());
731	>	c.await();
732	>	sync.release(1);
733	>	}});
734	>
735	>	sync.acquire(1);
736	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
737	>	sync.release(1);
738	>	t1.start();
739	>	Thread.sleep(SHORT_DELAY_MS);
740	>	t2.start();
741	>	Thread.sleep(SHORT_DELAY_MS);
742	>	sync.acquire(1);
743	>	assertTrue(sync.hasWaiters(c));
744	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
745	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
746	>	c.signalAll();
747	>	sync.release(1);
748	>	Thread.sleep(SHORT_DELAY_MS);
749	>	sync.acquire(1);
750	>	assertFalse(sync.hasWaiters(c));
751	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
752	>	sync.release(1);
753	>	t1.join(SHORT_DELAY_MS);
754	>	t2.join(SHORT_DELAY_MS);
755	>	assertFalse(t1.isAlive());
756	>	assertFalse(t2.isAlive());
757	>	}
758	>
759	>
760	>
761	>	/**
762	>	* awaitUninterruptibly doesn't abort on interrupt
763	>	*/
764	>	public void testAwaitUninterruptibly() throws InterruptedException {
765	>	final Mutex sync = new Mutex();
766	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
767	>	Thread t = new Thread(new CheckedRunnable() {
768	>	public void realRun() {
769	>	sync.acquire(1);
770	>	c.awaitUninterruptibly();
771	>	sync.release(1);
772	>	}});
773	>
774	>	t.start();
775	>	Thread.sleep(SHORT_DELAY_MS);
776	>	t.interrupt();
777	>	sync.acquire(1);
778	>	c.signal();
779	>	sync.release(1);
780	>	t.join(SHORT_DELAY_MS);
781	>	assertFalse(t.isAlive());
782	>	}
783	>
784	>	/**
785	>	* await is interruptible
786	>	*/
787	>	public void testAwait_Interrupt() throws InterruptedException {
788	>	final Mutex sync = new Mutex();
789	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
790	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
791	>	public void realRun() throws InterruptedException {
792	>	sync.acquire(1);
793	>	c.await();
794	>	}});
795	>
796	>	t.start();
797	>	Thread.sleep(SHORT_DELAY_MS);
798	>	t.interrupt();
799	>	t.join(SHORT_DELAY_MS);
800	>	assertFalse(t.isAlive());
801	>	}
802	>
803	>	/**
804	>	* awaitNanos is interruptible
805	>	*/
806	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
807	>	final Mutex sync = new Mutex();
808	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
809	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
810	>	public void realRun() throws InterruptedException {
811	>	sync.acquire(1);
812	>	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
813	>	}});
814	>
815	>	t.start();
816	>	Thread.sleep(SHORT_DELAY_MS);
817	>	t.interrupt();
818	>	t.join(SHORT_DELAY_MS);
819	>	assertFalse(t.isAlive());
820	>	}
821	>
822	>	/**
823	>	* awaitUntil is interruptible
824	>	*/
825	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
826	>	final Mutex sync = new Mutex();
827	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
828	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
829	>	public void realRun() throws InterruptedException {
830	>	sync.acquire(1);
831	>	java.util.Date d = new java.util.Date();
832	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
833	>	}});
834	>
835	>	t.start();
836	>	Thread.sleep(SHORT_DELAY_MS);
837	>	t.interrupt();
838	>	t.join(SHORT_DELAY_MS);
839	>	assertFalse(t.isAlive());
840	>	}
841	>
842	>	/**
843	>	* signalAll wakes up all threads
844	>	*/
845	>	public void testSignalAll() throws InterruptedException {
846	>	final Mutex sync = new Mutex();
847	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
848	>	Thread t1 = new Thread(new CheckedRunnable() {
849	>	public void realRun() throws InterruptedException {
850	>	sync.acquire(1);
851	>	c.await();
852	>	sync.release(1);
853	>	}});
854	>
855	>	Thread t2 = new Thread(new CheckedRunnable() {
856	>	public void realRun() throws InterruptedException {
857	>	sync.acquire(1);
858	>	c.await();
859	>	sync.release(1);
860	>	}});
861	>
862	>	t1.start();
863	>	t2.start();
864	>	Thread.sleep(SHORT_DELAY_MS);
865	>	sync.acquire(1);
866	>	c.signalAll();
867	>	sync.release(1);
868	>	t1.join(SHORT_DELAY_MS);
869	>	t2.join(SHORT_DELAY_MS);
870	>	assertFalse(t1.isAlive());
871	>	assertFalse(t2.isAlive());
872	>	}
873	>
874	>
875	>	/**
876	>	* toString indicates current state
877	>	*/
878	>	public void testToString() {
879	>	Mutex sync = new Mutex();
880	>	String us = sync.toString();
881	>	assertTrue(us.indexOf("State = 0") >= 0);
882	>	sync.acquire(1);
883	>	String ls = sync.toString();
884	>	assertTrue(ls.indexOf("State = 1") >= 0);
885	>	}
886	>
887	>	/**
888	>	* A serialized AQS deserializes with current state
889	>	*/
890	>	public void testSerialization() throws Exception {
891	>	Mutex l = new Mutex();
892	>	l.acquire(1);
893	>	assertTrue(l.isHeldExclusively());
894	>
895	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
896	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
897	>	out.writeObject(l);
898	>	out.close();
899	>
900	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
901	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
902	>	Mutex r = (Mutex) in.readObject();
903	>	assertTrue(r.isHeldExclusively());
904	>	}
905	>
906	>
907	>	/**
908	>	* tryReleaseShared setting state changes getState
909	>	*/
910	>	public void testGetStateWithReleaseShared() {
911	>	final BooleanLatch l = new BooleanLatch();
912	>	assertFalse(l.isSignalled());
913	>	l.releaseShared(0);
914	>	assertTrue(l.isSignalled());
915	>	}
916	>
917	>	/**
918	>	* releaseShared has no effect when already signalled
919	>	*/
920	>	public void testReleaseShared() {
921	>	final BooleanLatch l = new BooleanLatch();
922	>	assertFalse(l.isSignalled());
923	>	l.releaseShared(0);
924	>	assertTrue(l.isSignalled());
925	>	l.releaseShared(0);
926	>	assertTrue(l.isSignalled());
927	>	}
928	>
929	>	/**
930	>	* acquireSharedInterruptibly returns after release, but not before
931	>	*/
932	>	public void testAcquireSharedInterruptibly() throws InterruptedException {
933	>	final BooleanLatch l = new BooleanLatch();
934	>
935	>	Thread t = new Thread(new CheckedRunnable() {
936	>	public void realRun() throws InterruptedException {
937	>	assertFalse(l.isSignalled());
938	>	l.acquireSharedInterruptibly(0);
939	>	assertTrue(l.isSignalled());
940	>	}});
941	>
942	>	t.start();
943	>	assertFalse(l.isSignalled());
944	>	Thread.sleep(SHORT_DELAY_MS);
945	>	l.releaseShared(0);
946	>	assertTrue(l.isSignalled());
947	>	t.join();
948	>	}
949	>
950	>
951	>	/**
952	>	* acquireSharedTimed returns after release
953	>	*/
954	>	public void testAcquireSharedTimed() throws InterruptedException {
955	>	final BooleanLatch l = new BooleanLatch();
956	>
957	>	Thread t = new Thread(new CheckedRunnable() {
958	>	public void realRun() throws InterruptedException {
959	>	assertFalse(l.isSignalled());
960	>	long nanos = MILLISECONDS.toNanos(MEDIUM_DELAY_MS);
961	>	assertTrue(l.tryAcquireSharedNanos(0, nanos));
962	>	assertTrue(l.isSignalled());
963	>	}});
964	>
965	>	t.start();
966	>	assertFalse(l.isSignalled());
967	>	Thread.sleep(SHORT_DELAY_MS);
968	>	l.releaseShared(0);
969	>	assertTrue(l.isSignalled());
970	>	t.join();
971	>	}
972	>
973	>	/**
974	>	* acquireSharedInterruptibly throws IE if interrupted before released
975	>	*/
976	>	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
977	>	final BooleanLatch l = new BooleanLatch();
978	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
979	>	public void realRun() throws InterruptedException {
980	>	assertFalse(l.isSignalled());
981	>	l.acquireSharedInterruptibly(0);
982	>	}});
983	>
984	>	t.start();
985	>	assertFalse(l.isSignalled());
986	>	t.interrupt();
987	>	t.join();
988	>	}
989	>
990	>	/**
991	>	* acquireSharedTimed throws IE if interrupted before released
992	>	*/
993	>	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
994	>	final BooleanLatch l = new BooleanLatch();
995	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
996	>	public void realRun() throws InterruptedException {
997	>	assertFalse(l.isSignalled());
998	>	long nanos = MILLISECONDS.toNanos(SMALL_DELAY_MS);
999	>	l.tryAcquireSharedNanos(0, nanos);
1000	>	}});
1001	>
1002	>	t.start();
1003	>	Thread.sleep(SHORT_DELAY_MS);
1004	>	assertFalse(l.isSignalled());
1005	>	t.interrupt();
1006	>	t.join();
1007	>	}
1008	>
1009	>	/**
1010	>	* acquireSharedTimed times out if not released before timeout
1011	>	*/
1012	>	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1013	>	final BooleanLatch l = new BooleanLatch();
1014	>	Thread t = new Thread(new CheckedRunnable() {
1015	>	public void realRun() throws InterruptedException {
1016	>	assertFalse(l.isSignalled());
1017	>	long nanos = MILLISECONDS.toNanos(SMALL_DELAY_MS);
1018	>	assertFalse(l.tryAcquireSharedNanos(0, nanos));
1019	>	}});
1020	>
1021	>	t.start();
1022	>	Thread.sleep(SHORT_DELAY_MS);
1023	>	assertFalse(l.isSignalled());
1024	>	t.join();
1025	>	}
1026	>
1027		}

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