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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.2 by dl, Mon Dec 29 01:18:40 2003 UTC vs.
Revision 1.29 by jsr166, Sat Nov 21 02:07:26 2009 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
#	Line 22 | Line 22 | public class AbstractQueuedSynchronizerT
22		}
23
24		/**
25	<	* A simple mutex class, from the AbstractQueuedSynchronizer
26	<	* javadoc.  All tests exercise this as a sample user extension.
27	<	* Other methods/features of AbstractQueuedSynchronizerTest are
28	<	* tested implicitly in ReentrantLock, ReentrantReadWriteLock, and
29	<	* Semaphore test classes
30	<	*/
31	<	static class Mutex implements Lock, java.io.Serializable {
32	<	private static class Sync extends AbstractQueuedSynchronizer {
33	<	public int acquireExclusiveState(boolean isQueued, int acquires, Thread current) {
34	<	assert acquires == 1; // Does not use multiple acquires
35	<	return state().compareAndSet(0, 1)? 0 : -1;
36	<	}
37	<
38	<	public boolean releaseExclusiveState(int releases) {
39	<	state().set(0);
40	<	return true;
41	<	}
42	<
43	<	public int acquireSharedState(boolean isQueued, int acquires, Thread current) {
44	<	throw new UnsupportedOperationException();
45	<	}
46	<
47	<	public boolean releaseSharedState(int releases) {
48	<	throw new UnsupportedOperationException();
49	<	}
50	<
51	<	public void checkConditionAccess(Thread thread, boolean waiting) {
52	<	if (state().get() == 0) throw new IllegalMonitorStateException();
53	<	}
54	<
55	<	Condition newCondition() { return new ConditionObject(); }
56	<
57	<	private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
58	<	s.defaultReadObject();
59	<	state().set(0); // reset to unlocked state
60	<	}
61	<	}
62	<
63	<	private final Sync sync = new Sync();
64	<	public boolean tryLock() {
65	<	return sync.acquireExclusiveState(false, 1, null) >= 0;
25	>	* A simple mutex class, adapted from the
26	>	* AbstractQueuedSynchronizer javadoc.  Exclusive acquire tests
27	>	* exercise this as a sample user extension.  Other
28	>	* methods/features of AbstractQueuedSynchronizerTest are tested
29	>	* via other test classes, including those for ReentrantLock,
30	>	* ReentrantReadWriteLock, and Semaphore
31	>	*/
32	>	static class Mutex extends AbstractQueuedSynchronizer {
33	>	public boolean isHeldExclusively() { return getState() == 1; }
34	>
35	>	public boolean tryAcquire(int acquires) {
36	>	assertTrue(acquires == 1);
37	>	return compareAndSetState(0, 1);
38		}
39	<	public void lock() {
40	<	if (!tryLock()) sync.acquireExclusiveUninterruptibly(1);
39	>
40	>	public boolean tryRelease(int releases) {
41	>	if (getState() == 0) throw new IllegalMonitorStateException();
42	>	setState(0);
43	>	return true;
44		}
45	<	public void lockInterruptibly() throws InterruptedException {
46	<	sync.acquireExclusiveInterruptibly(1);
45	>
46	>	public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); }
47	>
48	>	}
49	>
50	>
51	>	/**
52	>	* A simple latch class, to test shared mode.
53	>	*/
54	>	static class BooleanLatch extends AbstractQueuedSynchronizer {
55	>	public boolean isSignalled() { return getState() != 0; }
56	>
57	>	public int tryAcquireShared(int ignore) {
58	>	return isSignalled()? 1 : -1;
59		}
60	<	public boolean tryLock(long timeout, TimeUnit unit) throws InterruptedException {
61	<	return sync.acquireExclusiveTimed(1, unit.toNanos(timeout));
60	>
61	>	public boolean tryReleaseShared(int ignore) {
62	>	setState(1);
63	>	return true;
64		}
76	–	public void unlock() { sync.releaseExclusive(1); }
77	–	public Condition newCondition() { return sync.newCondition(); }
78	–	public boolean isLocked() { return sync.state().get() != 0; }
79	–	public boolean hasQueuedThreads() { return sync.hasQueuedThreads(); }
65		}
66
67		/**
68	<	* A runnable calling lockInterruptibly
69	<	*/
70	<	class InterruptibleLockRunnable implements Runnable {
71	<	final Mutex lock;
72	<	InterruptibleLockRunnable(Mutex l) { lock = l; }
73	<	public void run() {
74	<	try {
75	<	lock.lockInterruptibly();
91	<	} catch(InterruptedException success){}
68	>	* A runnable calling acquireInterruptibly that does not expect to
69	>	* be interrupted.
70	>	*/
71	>	class InterruptibleSyncRunnable extends CheckedRunnable {
72	>	final Mutex sync;
73	>	InterruptibleSyncRunnable(Mutex l) { sync = l; }
74	>	public void realRun() throws InterruptedException {
75	>	sync.acquireInterruptibly(1);
76		}
77		}
78
79
80		/**
81	<	* A runnable calling lockInterruptibly that expects to be
82	<	* interrupted
81	>	* A runnable calling acquireInterruptibly that expects to be
82	>	* interrupted.
83		*/
84	<	class InterruptedLockRunnable implements Runnable {
85	<	final Mutex lock;
86	<	InterruptedLockRunnable(Mutex l) { lock = l; }
87	<	public void run() {
88	<	try {
105	<	lock.lockInterruptibly();
106	<	threadShouldThrow();
107	<	} catch(InterruptedException success){}
84	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
85	>	final Mutex sync;
86	>	InterruptedSyncRunnable(Mutex l) { sync = l; }
87	>	public void realRun() throws InterruptedException {
88	>	sync.acquireInterruptibly(1);
89		}
90		}
91	<
91	>
92		/**
93	<	* locking an unlocked lock succeeds
93	>	* isHeldExclusively is false upon construction
94		*/
95	<	public void testLock() {
96	<	Mutex rl = new Mutex();
97	<	rl.lock();
117	<	assertTrue(rl.isLocked());
118	<	rl.unlock();
95	>	public void testIsHeldExclusively() {
96	>	Mutex rl = new Mutex();
97	>	assertFalse(rl.isHeldExclusively());
98		}
99
100		/**
101	<	* trylock on an unlocked lock succeeds
101	>	* acquiring released sync succeeds
102		*/
103	<	public void testTryLock() {
104	<	Mutex rl = new Mutex();
105	<	assertTrue(rl.tryLock());
106	<	assertTrue(rl.isLocked());
107	<	rl.unlock();
103	>	public void testAcquire() {
104	>	Mutex rl = new Mutex();
105	>	rl.acquire(1);
106	>	assertTrue(rl.isHeldExclusively());
107	>	rl.release(1);
108	>	assertFalse(rl.isHeldExclusively());
109	>	}
110	>
111	>	/**
112	>	* tryAcquire on an released sync succeeds
113	>	*/
114	>	public void testTryAcquire() {
115	>	Mutex rl = new Mutex();
116	>	assertTrue(rl.tryAcquire(1));
117	>	assertTrue(rl.isHeldExclusively());
118	>	rl.release(1);
119		}
120
121		/**
122		* hasQueuedThreads reports whether there are waiting threads
123		*/
124	<	public void testhasQueuedThreads() {
125	<	final Mutex lock = new Mutex();
126	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
127	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
128	<	try {
129	<	assertFalse(lock.hasQueuedThreads());
130	<	lock.lock();
131	<	t1.start();
132	<	Thread.sleep(SHORT_DELAY_MS);
133	<	assertTrue(lock.hasQueuedThreads());
134	<	t2.start();
135	<	Thread.sleep(SHORT_DELAY_MS);
136	<	assertTrue(lock.hasQueuedThreads());
137	<	t1.interrupt();
138	<	Thread.sleep(SHORT_DELAY_MS);
139	<	assertTrue(lock.hasQueuedThreads());
140	<	lock.unlock();
141	<	Thread.sleep(SHORT_DELAY_MS);
142	<	assertFalse(lock.hasQueuedThreads());
143	<	t1.join();
144	<	t2.join();
155	<	} catch(Exception e){
156	<	unexpectedException();
157	<	}
158	<	}
124	>	public void testhasQueuedThreads() throws InterruptedException {
125	>	final Mutex sync = new Mutex();
126	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
127	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
128	>	assertFalse(sync.hasQueuedThreads());
129	>	sync.acquire(1);
130	>	t1.start();
131	>	Thread.sleep(SHORT_DELAY_MS);
132	>	assertTrue(sync.hasQueuedThreads());
133	>	t2.start();
134	>	Thread.sleep(SHORT_DELAY_MS);
135	>	assertTrue(sync.hasQueuedThreads());
136	>	t1.interrupt();
137	>	Thread.sleep(SHORT_DELAY_MS);
138	>	assertTrue(sync.hasQueuedThreads());
139	>	sync.release(1);
140	>	Thread.sleep(SHORT_DELAY_MS);
141	>	assertFalse(sync.hasQueuedThreads());
142	>	t1.join();
143	>	t2.join();
144	>	}
145
146		/**
147	<	* timed trylock is interruptible.
147	>	* isQueued(null) throws NPE
148		*/
149	<	public void testInterruptedException2() {
150	<	final Mutex lock = new Mutex();
151	<	lock.lock();
152	<	Thread t = new Thread(new Runnable() {
153	<	public void run() {
154	<	try {
169	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
170	<	threadShouldThrow();
171	<	} catch(InterruptedException success){}
172	<	}
173	<	});
174	<	try {
175	<	t.start();
176	<	t.interrupt();
177	<	} catch(Exception e){
178	<	unexpectedException();
179	<	}
149	>	public void testIsQueuedNPE() {
150	>	final Mutex sync = new Mutex();
151	>	try {
152	>	sync.isQueued(null);
153	>	shouldThrow();
154	>	} catch (NullPointerException success) {}
155		}
156
157	+	/**
158	+	* isQueued reports whether a thread is queued.
159	+	*/
160	+	public void testIsQueued() throws InterruptedException {
161	+	final Mutex sync = new Mutex();
162	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
163	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
164	+	assertFalse(sync.isQueued(t1));
165	+	assertFalse(sync.isQueued(t2));
166	+	sync.acquire(1);
167	+	t1.start();
168	+	Thread.sleep(SHORT_DELAY_MS);
169	+	assertTrue(sync.isQueued(t1));
170	+	t2.start();
171	+	Thread.sleep(SHORT_DELAY_MS);
172	+	assertTrue(sync.isQueued(t1));
173	+	assertTrue(sync.isQueued(t2));
174	+	t1.interrupt();
175	+	Thread.sleep(SHORT_DELAY_MS);
176	+	assertFalse(sync.isQueued(t1));
177	+	assertTrue(sync.isQueued(t2));
178	+	sync.release(1);
179	+	Thread.sleep(SHORT_DELAY_MS);
180	+	assertFalse(sync.isQueued(t1));
181	+	Thread.sleep(SHORT_DELAY_MS);
182	+	assertFalse(sync.isQueued(t2));
183	+	t1.join();
184	+	t2.join();
185	+	}
186	+
187	+	/**
188	+	* getFirstQueuedThread returns first waiting thread or null if none
189	+	*/
190	+	public void testGetFirstQueuedThread() throws InterruptedException {
191	+	final Mutex sync = new Mutex();
192	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
193	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
194	+	assertNull(sync.getFirstQueuedThread());
195	+	sync.acquire(1);
196	+	t1.start();
197	+	Thread.sleep(SHORT_DELAY_MS);
198	+	assertEquals(t1, sync.getFirstQueuedThread());
199	+	t2.start();
200	+	Thread.sleep(SHORT_DELAY_MS);
201	+	assertEquals(t1, sync.getFirstQueuedThread());
202	+	t1.interrupt();
203	+	Thread.sleep(SHORT_DELAY_MS);
204	+	Thread.sleep(SHORT_DELAY_MS);
205	+	assertEquals(t2, sync.getFirstQueuedThread());
206	+	sync.release(1);
207	+	Thread.sleep(SHORT_DELAY_MS);
208	+	assertNull(sync.getFirstQueuedThread());
209	+	t1.join();
210	+	t2.join();
211	+	}
212	+
213	+
214	+	/**
215	+	* hasContended reports false if no thread has ever blocked, else true
216	+	*/
217	+	public void testHasContended() throws InterruptedException {
218	+	final Mutex sync = new Mutex();
219	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
220	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
221	+	assertFalse(sync.hasContended());
222	+	sync.acquire(1);
223	+	t1.start();
224	+	Thread.sleep(SHORT_DELAY_MS);
225	+	assertTrue(sync.hasContended());
226	+	t2.start();
227	+	Thread.sleep(SHORT_DELAY_MS);
228	+	assertTrue(sync.hasContended());
229	+	t1.interrupt();
230	+	Thread.sleep(SHORT_DELAY_MS);
231	+	assertTrue(sync.hasContended());
232	+	sync.release(1);
233	+	Thread.sleep(SHORT_DELAY_MS);
234	+	assertTrue(sync.hasContended());
235	+	t1.join();
236	+	t2.join();
237	+	}
238	+
239	+	/**
240	+	* getQueuedThreads includes waiting threads
241	+	*/
242	+	public void testGetQueuedThreads() throws InterruptedException {
243	+	final Mutex sync = new Mutex();
244	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
245	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
246	+	assertTrue(sync.getQueuedThreads().isEmpty());
247	+	sync.acquire(1);
248	+	assertTrue(sync.getQueuedThreads().isEmpty());
249	+	t1.start();
250	+	Thread.sleep(SHORT_DELAY_MS);
251	+	assertTrue(sync.getQueuedThreads().contains(t1));
252	+	t2.start();
253	+	Thread.sleep(SHORT_DELAY_MS);
254	+	assertTrue(sync.getQueuedThreads().contains(t1));
255	+	assertTrue(sync.getQueuedThreads().contains(t2));
256	+	t1.interrupt();
257	+	Thread.sleep(SHORT_DELAY_MS);
258	+	assertFalse(sync.getQueuedThreads().contains(t1));
259	+	assertTrue(sync.getQueuedThreads().contains(t2));
260	+	sync.release(1);
261	+	Thread.sleep(SHORT_DELAY_MS);
262	+	assertTrue(sync.getQueuedThreads().isEmpty());
263	+	t1.join();
264	+	t2.join();
265	+	}
266	+
267	+	/**
268	+	* getExclusiveQueuedThreads includes waiting threads
269	+	*/
270	+	public void testGetExclusiveQueuedThreads() throws InterruptedException {
271	+	final Mutex sync = new Mutex();
272	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
273	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
274	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
275	+	sync.acquire(1);
276	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
277	+	t1.start();
278	+	Thread.sleep(SHORT_DELAY_MS);
279	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
280	+	t2.start();
281	+	Thread.sleep(SHORT_DELAY_MS);
282	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
283	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
284	+	t1.interrupt();
285	+	Thread.sleep(SHORT_DELAY_MS);
286	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
287	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
288	+	sync.release(1);
289	+	Thread.sleep(SHORT_DELAY_MS);
290	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
291	+	t1.join();
292	+	t2.join();
293	+	}
294	+
295	+	/**
296	+	* getSharedQueuedThreads does not include exclusively waiting threads
297	+	*/
298	+	public void testGetSharedQueuedThreads() throws InterruptedException {
299	+	final Mutex sync = new Mutex();
300	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
301	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
302	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
303	+	sync.acquire(1);
304	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
305	+	t1.start();
306	+	Thread.sleep(SHORT_DELAY_MS);
307	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
308	+	t2.start();
309	+	Thread.sleep(SHORT_DELAY_MS);
310	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
311	+	t1.interrupt();
312	+	Thread.sleep(SHORT_DELAY_MS);
313	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
314	+	sync.release(1);
315	+	Thread.sleep(SHORT_DELAY_MS);
316	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
317	+	t1.join();
318	+	t2.join();
319	+	}
320	+
321	+	/**
322	+	* tryAcquireNanos is interruptible.
323	+	*/
324	+	public void testInterruptedException2() throws InterruptedException {
325	+	final Mutex sync = new Mutex();
326	+	sync.acquire(1);
327	+	Thread t = new Thread(new CheckedInterruptedRunnable() {
328	+	public void realRun() throws InterruptedException {
329	+	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
330	+	}});
331	+
332	+	t.start();
333	+	t.interrupt();
334	+	t.join();
335	+	}
336	+
337	+
338	+	/**
339	+	* TryAcquire on exclusively held sync fails
340	+	*/
341	+	public void testTryAcquireWhenSynced() throws InterruptedException {
342	+	final Mutex sync = new Mutex();
343	+	sync.acquire(1);
344	+	Thread t = new Thread(new CheckedRunnable() {
345	+	public void realRun() {
346	+	threadAssertFalse(sync.tryAcquire(1));
347	+	}});
348	+
349	+	t.start();
350	+	t.join();
351	+	sync.release(1);
352	+	}
353	+
354	+	/**
355	+	* tryAcquireNanos on an exclusively held sync times out
356	+	*/
357	+	public void testAcquireNanos_Timeout() throws InterruptedException {
358	+	final Mutex sync = new Mutex();
359	+	sync.acquire(1);
360	+	Thread t = new Thread(new CheckedRunnable() {
361	+	public void realRun() throws InterruptedException {
362	+	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
363	+	}});
364	+
365	+	t.start();
366	+	t.join();
367	+	sync.release(1);
368	+	}
369	+
370	+
371	+	/**
372	+	* getState is true when acquired and false when not
373	+	*/
374	+	public void testGetState() throws InterruptedException {
375	+	final Mutex sync = new Mutex();
376	+	sync.acquire(1);
377	+	assertTrue(sync.isHeldExclusively());
378	+	sync.release(1);
379	+	assertFalse(sync.isHeldExclusively());
380	+	Thread t = new Thread(new CheckedRunnable() {
381	+	public void realRun() throws InterruptedException {
382	+	sync.acquire(1);
383	+	Thread.sleep(SMALL_DELAY_MS);
384	+	sync.release(1);
385	+	}});
386	+
387	+	t.start();
388	+	Thread.sleep(SHORT_DELAY_MS);
389	+	assertTrue(sync.isHeldExclusively());
390	+	t.join();
391	+	assertFalse(sync.isHeldExclusively());
392	+	}
393	+
394	+
395	+	/**
396	+	* acquireInterruptibly is interruptible.
397	+	*/
398	+	public void testAcquireInterruptibly1() throws InterruptedException {
399	+	final Mutex sync = new Mutex();
400	+	sync.acquire(1);
401	+	Thread t = new Thread(new InterruptedSyncRunnable(sync));
402	+
403	+	t.start();
404	+	Thread.sleep(SHORT_DELAY_MS);
405	+	t.interrupt();
406	+	Thread.sleep(SHORT_DELAY_MS);
407	+	sync.release(1);
408	+	t.join();
409	+	}
410	+
411	+	/**
412	+	* acquireInterruptibly succeeds when released, else is interruptible
413	+	*/
414	+	public void testAcquireInterruptibly2() throws InterruptedException {
415	+	final Mutex sync = new Mutex();
416	+	sync.acquireInterruptibly(1);
417	+	Thread t = new Thread(new InterruptedSyncRunnable(sync));
418	+	t.start();
419	+	t.interrupt();
420	+	assertTrue(sync.isHeldExclusively());
421	+	t.join();
422	+	}
423	+
424	+	/**
425	+	* owns is true for a condition created by sync else false
426	+	*/
427	+	public void testOwns() {
428	+	final Mutex sync = new Mutex();
429	+	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
430	+	final Mutex sync2 = new Mutex();
431	+	assertTrue(sync.owns(c));
432	+	assertFalse(sync2.owns(c));
433	+	}
434	+
435	+	/**
436	+	* Calling await without holding sync throws IllegalMonitorStateException
437	+	*/
438	+	public void testAwait_IllegalMonitor() throws InterruptedException {
439	+	final Mutex sync = new Mutex();
440	+	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
441	+	try {
442	+	c.await();
443	+	shouldThrow();
444	+	} catch (IllegalMonitorStateException success) {}
445	+	}
446
447		/**
448	<	* Trylock on a locked lock fails
448	>	* Calling signal without holding sync throws IllegalMonitorStateException
449		*/
450	<	public void testTryLockWhenLocked() {
451	<	final Mutex lock = new Mutex();
452	<	lock.lock();
453	<	Thread t = new Thread(new Runnable() {
454	<	public void run() {
455	<	threadAssertFalse(lock.tryLock());
456	<	}
457	<	});
194	<	try {
195	<	t.start();
196	<	t.join();
197	<	lock.unlock();
198	<	} catch(Exception e){
199	<	unexpectedException();
200	<	}
201	<	}
450	>	public void testSignal_IllegalMonitor() {
451	>	final Mutex sync = new Mutex();
452	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
453	>	try {
454	>	c.signal();
455	>	shouldThrow();
456	>	} catch (IllegalMonitorStateException success) {}
457	>	}
458
459		/**
460	<	* Timed trylock on a locked lock times out
460	>	* awaitNanos without a signal times out
461		*/
462	<	public void testTryLock_Timeout() {
463	<	final Mutex lock = new Mutex();
464	<	lock.lock();
465	<	Thread t = new Thread(new Runnable() {
466	<	public void run() {
467	<	try {
468	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
213	<	} catch (Exception ex) {
214	<	threadUnexpectedException();
215	<	}
216	<	}
217	<	});
218	<	try {
219	<	t.start();
220	<	t.join();
221	<	lock.unlock();
222	<	} catch(Exception e){
223	<	unexpectedException();
224	<	}
225	<	}
226	<
227	<
228	<	/**
229	<	* isLocked is true when locked and false when not
230	<	*/
231	<	public void testIsLocked() {
232	<	final Mutex lock = new Mutex();
233	<	lock.lock();
234	<	assertTrue(lock.isLocked());
235	<	lock.unlock();
236	<	assertFalse(lock.isLocked());
237	<	Thread t = new Thread(new Runnable() {
238	<	public void run() {
239	<	lock.lock();
240	<	try {
241	<	Thread.sleep(SMALL_DELAY_MS);
242	<	}
243	<	catch(Exception e) {
244	<	threadUnexpectedException();
245	<	}
246	<	lock.unlock();
247	<	}
248	<	});
249	<	try {
250	<	t.start();
251	<	Thread.sleep(SHORT_DELAY_MS);
252	<	assertTrue(lock.isLocked());
253	<	t.join();
254	<	assertFalse(lock.isLocked());
255	<	} catch(Exception e){
256	<	unexpectedException();
257	<	}
462	>	public void testAwaitNanos_Timeout() throws InterruptedException {
463	>	final Mutex sync = new Mutex();
464	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
465	>	sync.acquire(1);
466	>	long t = c.awaitNanos(100);
467	>	assertTrue(t <= 0);
468	>	sync.release(1);
469		}
470
471	+	/**
472	+	*  Timed await without a signal times out
473	+	*/
474	+	public void testAwait_Timeout() throws InterruptedException {
475	+	final Mutex sync = new Mutex();
476	+	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
477	+	sync.acquire(1);
478	+	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
479	+	sync.release(1);
480	+	}
481
482		/**
483	<	* lockInterruptibly is interruptible.
483	>	* awaitUntil without a signal times out
484		*/
485	<	public void testLockInterruptibly1() {
486	<	final Mutex lock = new Mutex();
487	<	lock.lock();
488	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
489	<	try {
490	<	t.start();
491	<	t.interrupt();
492	<	lock.unlock();
272	<	t.join();
273	<	} catch(Exception e){
274	<	unexpectedException();
275	<	}
276	<	}
485	>	public void testAwaitUntil_Timeout() throws InterruptedException {
486	>	final Mutex sync = new Mutex();
487	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
488	>	sync.acquire(1);
489	>	java.util.Date d = new java.util.Date();
490	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
491	>	sync.release(1);
492	>	}
493
494		/**
495	<	* lockInterruptibly succeeds when unlocked, else is interruptible
495	>	* await returns when signalled
496		*/
497	<	public void testLockInterruptibly2() {
498	<	final Mutex lock = new Mutex();
499	<	try {
500	<	lock.lockInterruptibly();
501	<	} catch(Exception e) {
502	<	unexpectedException();
503	<	}
504	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
497	>	public void testAwait() throws InterruptedException {
498	>	final Mutex sync = new Mutex();
499	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
500	>	Thread t = new Thread(new CheckedRunnable() {
501	>	public void realRun() throws InterruptedException {
502	>	sync.acquire(1);
503	>	c.await();
504	>	sync.release(1);
505	>	}});
506	>
507	>	t.start();
508	>	Thread.sleep(SHORT_DELAY_MS);
509	>	sync.acquire(1);
510	>	c.signal();
511	>	sync.release(1);
512	>	t.join(SHORT_DELAY_MS);
513	>	assertFalse(t.isAlive());
514	>	}
515	>
516	>
517	>
518	>	/**
519	>	* hasWaiters throws NPE if null
520	>	*/
521	>	public void testHasWaitersNPE() {
522	>	final Mutex sync = new Mutex();
523		try {
524	<	t.start();
525	<	t.interrupt();
526	<	assertTrue(lock.isLocked());
293	<	t.join();
294	<	} catch(Exception e){
295	<	unexpectedException();
296	<	}
524	>	sync.hasWaiters(null);
525	>	shouldThrow();
526	>	} catch (NullPointerException success) {}
527		}
528
529		/**
530	<	* Calling await without holding lock throws IllegalMonitorStateException
530	>	* getWaitQueueLength throws NPE if null
531		*/
532	<	public void testAwait_IllegalMonitor() {
533	<	final Mutex lock = new Mutex();
304	<	final Condition c = lock.newCondition();
532	>	public void testGetWaitQueueLengthNPE() {
533	>	final Mutex sync = new Mutex();
534		try {
535	<	c.await();
535	>	sync.getWaitQueueLength(null);
536		shouldThrow();
537	<	}
309	<	catch (IllegalMonitorStateException success) {
310	<	}
311	<	catch (Exception ex) {
312	<	unexpectedException();
313	<	}
537	>	} catch (NullPointerException success) {}
538		}
539
540	+
541		/**
542	<	* Calling signal without holding lock throws IllegalMonitorStateException
542	>	* getWaitingThreads throws NPE if null
543		*/
544	<	public void testSignal_IllegalMonitor() {
545	<	final Mutex lock = new Mutex();
321	<	final Condition c = lock.newCondition();
544	>	public void testGetWaitingThreadsNPE() {
545	>	final Mutex sync = new Mutex();
546		try {
547	<	c.signal();
547	>	sync.getWaitingThreads(null);
548		shouldThrow();
549	<	}
326	<	catch (IllegalMonitorStateException success) {
327	<	}
328	<	catch (Exception ex) {
329	<	unexpectedException();
330	<	}
549	>	} catch (NullPointerException success) {}
550		}
551
552	+
553		/**
554	<	* awaitNanos without a signal times out
554	>	* hasWaiters throws IAE if not owned
555		*/
556	<	public void testAwaitNanos_Timeout() {
557	<	final Mutex lock = new Mutex();
558	<	final Condition c = lock.newCondition();
559	<	try {
560	<	lock.lock();
561	<	long t = c.awaitNanos(100);
562	<	assertTrue(t <= 0);
563	<	lock.unlock();
344	<	}
345	<	catch (Exception ex) {
346	<	unexpectedException();
347	<	}
556	>	public void testHasWaitersIAE() {
557	>	final Mutex sync = new Mutex();
558	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
559	>	final Mutex sync2 = new Mutex();
560	>	try {
561	>	sync2.hasWaiters(c);
562	>	shouldThrow();
563	>	} catch (IllegalArgumentException success) {}
564		}
565
566		/**
567	<	*  timed await without a signal times out
567	>	* hasWaiters throws IMSE if not synced
568		*/
569	<	public void testAwait_Timeout() {
570	<	final Mutex lock = new Mutex();
571	<	final Condition c = lock.newCondition();
572	<	try {
573	<	lock.lock();
574	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
575	<	lock.unlock();
360	<	}
361	<	catch (Exception ex) {
362	<	unexpectedException();
363	<	}
569	>	public void testHasWaitersIMSE() {
570	>	final Mutex sync = new Mutex();
571	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
572	>	try {
573	>	sync.hasWaiters(c);
574	>	shouldThrow();
575	>	} catch (IllegalMonitorStateException success) {}
576		}
577
578	+
579		/**
580	<	* awaitUntil without a signal times out
580	>	* getWaitQueueLength throws IAE if not owned
581		*/
582	<	public void testAwaitUntil_Timeout() {
583	<	final Mutex lock = new Mutex();
584	<	final Condition c = lock.newCondition();
585	<	try {
586	<	lock.lock();
587	<	java.util.Date d = new java.util.Date();
588	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
589	<	lock.unlock();
377	<	}
378	<	catch (Exception ex) {
379	<	unexpectedException();
380	<	}
582	>	public void testGetWaitQueueLengthIAE() {
583	>	final Mutex sync = new Mutex();
584	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
585	>	final Mutex sync2 = new Mutex();
586	>	try {
587	>	sync2.getWaitQueueLength(c);
588	>	shouldThrow();
589	>	} catch (IllegalArgumentException success) {}
590		}
591
592		/**
593	<	* await returns when signalled
593	>	* getWaitQueueLength throws IMSE if not synced
594		*/
595	<	public void testAwait() {
596	<	final Mutex lock = new Mutex();
597	<	final Condition c = lock.newCondition();
598	<	Thread t = new Thread(new Runnable() {
599	<	public void run() {
600	<	try {
601	<	lock.lock();
602	<	c.await();
603	<	lock.unlock();
604	<	}
605	<	catch(InterruptedException e) {
606	<	threadUnexpectedException();
607	<	}
608	<	}
609	<	});
610	<
611	<	try {
612	<	t.start();
613	<	Thread.sleep(SHORT_DELAY_MS);
614	<	lock.lock();
615	<	c.signal();
407	<	lock.unlock();
408	<	t.join(SHORT_DELAY_MS);
409	<	assertFalse(t.isAlive());
410	<	}
411	<	catch (Exception ex) {
412	<	unexpectedException();
413	<	}
595	>	public void testGetWaitQueueLengthIMSE() {
596	>	final Mutex sync = new Mutex();
597	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
598	>	try {
599	>	sync.getWaitQueueLength(c);
600	>	shouldThrow();
601	>	} catch (IllegalMonitorStateException success) {}
602	>	}
603	>
604	>
605	>	/**
606	>	* getWaitingThreads throws IAE if not owned
607	>	*/
608	>	public void testGetWaitingThreadsIAE() {
609	>	final Mutex sync = new Mutex();
610	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
611	>	final Mutex sync2 = new Mutex();
612	>	try {
613	>	sync2.getWaitingThreads(c);
614	>	shouldThrow();
615	>	} catch (IllegalArgumentException success) {}
616		}
617	<
617	>
618	>	/**
619	>	* getWaitingThreads throws IMSE if not synced
620	>	*/
621	>	public void testGetWaitingThreadsIMSE() {
622	>	final Mutex sync = new Mutex();
623	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
624	>	try {
625	>	sync.getWaitingThreads(c);
626	>	shouldThrow();
627	>	} catch (IllegalMonitorStateException success) {}
628	>	}
629	>
630	>
631	>
632	>	/**
633	>	* hasWaiters returns true when a thread is waiting, else false
634	>	*/
635	>	public void testHasWaiters() throws InterruptedException {
636	>	final Mutex sync = new Mutex();
637	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
638	>	Thread t = new Thread(new CheckedRunnable() {
639	>	public void realRun() throws InterruptedException {
640	>	sync.acquire(1);
641	>	threadAssertFalse(sync.hasWaiters(c));
642	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
643	>	c.await();
644	>	sync.release(1);
645	>	}});
646	>
647	>	t.start();
648	>	Thread.sleep(SHORT_DELAY_MS);
649	>	sync.acquire(1);
650	>	assertTrue(sync.hasWaiters(c));
651	>	assertEquals(1, sync.getWaitQueueLength(c));
652	>	c.signal();
653	>	sync.release(1);
654	>	Thread.sleep(SHORT_DELAY_MS);
655	>	sync.acquire(1);
656	>	assertFalse(sync.hasWaiters(c));
657	>	assertEquals(0, sync.getWaitQueueLength(c));
658	>	sync.release(1);
659	>	t.join(SHORT_DELAY_MS);
660	>	assertFalse(t.isAlive());
661	>	}
662	>
663	>	/**
664	>	* getWaitQueueLength returns number of waiting threads
665	>	*/
666	>	public void testGetWaitQueueLength() throws InterruptedException {
667	>	final Mutex sync = new Mutex();
668	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
669	>	Thread t1 = new Thread(new CheckedRunnable() {
670	>	public void realRun() throws InterruptedException {
671	>	sync.acquire(1);
672	>	threadAssertFalse(sync.hasWaiters(c));
673	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
674	>	c.await();
675	>	sync.release(1);
676	>	}});
677	>
678	>	Thread t2 = new Thread(new CheckedRunnable() {
679	>	public void realRun() throws InterruptedException {
680	>	sync.acquire(1);
681	>	threadAssertTrue(sync.hasWaiters(c));
682	>	threadAssertEquals(1, sync.getWaitQueueLength(c));
683	>	c.await();
684	>	sync.release(1);
685	>	}});
686	>
687	>	t1.start();
688	>	Thread.sleep(SHORT_DELAY_MS);
689	>	t2.start();
690	>	Thread.sleep(SHORT_DELAY_MS);
691	>	sync.acquire(1);
692	>	assertTrue(sync.hasWaiters(c));
693	>	assertEquals(2, sync.getWaitQueueLength(c));
694	>	c.signalAll();
695	>	sync.release(1);
696	>	Thread.sleep(SHORT_DELAY_MS);
697	>	sync.acquire(1);
698	>	assertFalse(sync.hasWaiters(c));
699	>	assertEquals(0, sync.getWaitQueueLength(c));
700	>	sync.release(1);
701	>	t1.join(SHORT_DELAY_MS);
702	>	t2.join(SHORT_DELAY_MS);
703	>	assertFalse(t1.isAlive());
704	>	assertFalse(t2.isAlive());
705	>	}
706	>
707	>	/**
708	>	* getWaitingThreads returns only and all waiting threads
709	>	*/
710	>	public void testGetWaitingThreads() throws InterruptedException {
711	>	final Mutex sync = new Mutex();
712	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
713	>	Thread t1 = new Thread(new CheckedRunnable() {
714	>	public void realRun() throws InterruptedException {
715	>	sync.acquire(1);
716	>	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
717	>	c.await();
718	>	sync.release(1);
719	>	}});
720	>
721	>	Thread t2 = new Thread(new CheckedRunnable() {
722	>	public void realRun() throws InterruptedException {
723	>	sync.acquire(1);
724	>	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
725	>	c.await();
726	>	sync.release(1);
727	>	}});
728	>
729	>	sync.acquire(1);
730	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
731	>	sync.release(1);
732	>	t1.start();
733	>	Thread.sleep(SHORT_DELAY_MS);
734	>	t2.start();
735	>	Thread.sleep(SHORT_DELAY_MS);
736	>	sync.acquire(1);
737	>	assertTrue(sync.hasWaiters(c));
738	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
739	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
740	>	c.signalAll();
741	>	sync.release(1);
742	>	Thread.sleep(SHORT_DELAY_MS);
743	>	sync.acquire(1);
744	>	assertFalse(sync.hasWaiters(c));
745	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
746	>	sync.release(1);
747	>	t1.join(SHORT_DELAY_MS);
748	>	t2.join(SHORT_DELAY_MS);
749	>	assertFalse(t1.isAlive());
750	>	assertFalse(t2.isAlive());
751	>	}
752	>
753	>
754	>
755	>	/**
756	>	* awaitUninterruptibly doesn't abort on interrupt
757	>	*/
758	>	public void testAwaitUninterruptibly() throws InterruptedException {
759	>	final Mutex sync = new Mutex();
760	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
761	>	Thread t = new Thread(new CheckedRunnable() {
762	>	public void realRun() {
763	>	sync.acquire(1);
764	>	c.awaitUninterruptibly();
765	>	sync.release(1);
766	>	}});
767	>
768	>	t.start();
769	>	Thread.sleep(SHORT_DELAY_MS);
770	>	t.interrupt();
771	>	sync.acquire(1);
772	>	c.signal();
773	>	sync.release(1);
774	>	t.join(SHORT_DELAY_MS);
775	>	assertFalse(t.isAlive());
776	>	}
777	>
778	>	/**
779	>	* await is interruptible
780	>	*/
781	>	public void testAwait_Interrupt() throws InterruptedException {
782	>	final Mutex sync = new Mutex();
783	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
784	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
785	>	public void realRun() throws InterruptedException {
786	>	sync.acquire(1);
787	>	c.await();
788	>	sync.release(1);
789	>	}});
790	>
791	>	t.start();
792	>	Thread.sleep(SHORT_DELAY_MS);
793	>	t.interrupt();
794	>	t.join(SHORT_DELAY_MS);
795	>	assertFalse(t.isAlive());
796	>	}
797	>
798	>	/**
799	>	* awaitNanos is interruptible
800	>	*/
801	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
802	>	final Mutex sync = new Mutex();
803	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
804	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
805	>	public void realRun() throws InterruptedException {
806	>	sync.acquire(1);
807	>	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
808	>	sync.release(1);
809	>	}});
810	>
811	>	t.start();
812	>	Thread.sleep(SHORT_DELAY_MS);
813	>	t.interrupt();
814	>	t.join(SHORT_DELAY_MS);
815	>	assertFalse(t.isAlive());
816	>	}
817	>
818	>	/**
819	>	* awaitUntil is interruptible
820	>	*/
821	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
822	>	final Mutex sync = new Mutex();
823	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
824	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
825	>	public void realRun() throws InterruptedException {
826	>	sync.acquire(1);
827	>	java.util.Date d = new java.util.Date();
828	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
829	>	sync.release(1);
830	>	}});
831	>
832	>	t.start();
833	>	Thread.sleep(SHORT_DELAY_MS);
834	>	t.interrupt();
835	>	t.join(SHORT_DELAY_MS);
836	>	assertFalse(t.isAlive());
837	>	}
838	>
839	>	/**
840	>	* signalAll wakes up all threads
841	>	*/
842	>	public void testSignalAll() throws InterruptedException {
843	>	final Mutex sync = new Mutex();
844	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
845	>	Thread t1 = new Thread(new CheckedRunnable() {
846	>	public void realRun() throws InterruptedException {
847	>	sync.acquire(1);
848	>	c.await();
849	>	sync.release(1);
850	>	}});
851	>
852	>	Thread t2 = new Thread(new CheckedRunnable() {
853	>	public void realRun() throws InterruptedException {
854	>	sync.acquire(1);
855	>	c.await();
856	>	sync.release(1);
857	>	}});
858	>
859	>	t1.start();
860	>	t2.start();
861	>	Thread.sleep(SHORT_DELAY_MS);
862	>	sync.acquire(1);
863	>	c.signalAll();
864	>	sync.release(1);
865	>	t1.join(SHORT_DELAY_MS);
866	>	t2.join(SHORT_DELAY_MS);
867	>	assertFalse(t1.isAlive());
868	>	assertFalse(t2.isAlive());
869	>	}
870	>
871	>
872	>	/**
873	>	* toString indicates current state
874	>	*/
875	>	public void testToString() {
876	>	Mutex sync = new Mutex();
877	>	String us = sync.toString();
878	>	assertTrue(us.indexOf("State = 0") >= 0);
879	>	sync.acquire(1);
880	>	String ls = sync.toString();
881	>	assertTrue(ls.indexOf("State = 1") >= 0);
882	>	}
883	>
884	>	/**
885	>	* A serialized AQS deserializes with current state
886	>	*/
887	>	public void testSerialization() throws Exception {
888	>	Mutex l = new Mutex();
889	>	l.acquire(1);
890	>	assertTrue(l.isHeldExclusively());
891	>
892	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
893	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
894	>	out.writeObject(l);
895	>	out.close();
896	>
897	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
898	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
899	>	Mutex r = (Mutex) in.readObject();
900	>	assertTrue(r.isHeldExclusively());
901	>	}
902	>
903	>
904	>	/**
905	>	* tryReleaseShared setting state changes getState
906	>	*/
907	>	public void testGetStateWithReleaseShared() {
908	>	final BooleanLatch l = new BooleanLatch();
909	>	assertFalse(l.isSignalled());
910	>	l.releaseShared(0);
911	>	assertTrue(l.isSignalled());
912	>	}
913	>
914	>	/**
915	>	* releaseShared has no effect when already signalled
916	>	*/
917	>	public void testReleaseShared() {
918	>	final BooleanLatch l = new BooleanLatch();
919	>	assertFalse(l.isSignalled());
920	>	l.releaseShared(0);
921	>	assertTrue(l.isSignalled());
922	>	l.releaseShared(0);
923	>	assertTrue(l.isSignalled());
924	>	}
925	>
926	>	/**
927	>	* acquireSharedInterruptibly returns after release, but not before
928	>	*/
929	>	public void testAcquireSharedInterruptibly() throws InterruptedException {
930	>	final BooleanLatch l = new BooleanLatch();
931	>
932	>	Thread t = new Thread(new CheckedRunnable() {
933	>	public void realRun() throws InterruptedException {
934	>	threadAssertFalse(l.isSignalled());
935	>	l.acquireSharedInterruptibly(0);
936	>	threadAssertTrue(l.isSignalled());
937	>	}});
938	>
939	>	t.start();
940	>	assertFalse(l.isSignalled());
941	>	Thread.sleep(SHORT_DELAY_MS);
942	>	l.releaseShared(0);
943	>	assertTrue(l.isSignalled());
944	>	t.join();
945	>	}
946	>
947	>
948	>	/**
949	>	* acquireSharedTimed returns after release
950	>	*/
951	>	public void testAsquireSharedTimed() throws InterruptedException {
952	>	final BooleanLatch l = new BooleanLatch();
953	>
954	>	Thread t = new Thread(new CheckedRunnable() {
955	>	public void realRun() throws InterruptedException {
956	>	threadAssertFalse(l.isSignalled());
957	>	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
958	>	threadAssertTrue(l.isSignalled());
959	>	}});
960	>
961	>	t.start();
962	>	assertFalse(l.isSignalled());
963	>	Thread.sleep(SHORT_DELAY_MS);
964	>	l.releaseShared(0);
965	>	assertTrue(l.isSignalled());
966	>	t.join();
967	>	}
968	>
969	>	/**
970	>	* acquireSharedInterruptibly throws IE if interrupted before released
971	>	*/
972	>	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
973	>	final BooleanLatch l = new BooleanLatch();
974	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
975	>	public void realRun() throws InterruptedException {
976	>	threadAssertFalse(l.isSignalled());
977	>	l.acquireSharedInterruptibly(0);
978	>	}});
979	>
980	>	t.start();
981	>	assertFalse(l.isSignalled());
982	>	t.interrupt();
983	>	t.join();
984	>	}
985	>
986	>	/**
987	>	* acquireSharedTimed throws IE if interrupted before released
988	>	*/
989	>	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
990	>	final BooleanLatch l = new BooleanLatch();
991	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
992	>	public void realRun() throws InterruptedException {
993	>	threadAssertFalse(l.isSignalled());
994	>	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
995	>	}});
996	>
997	>	t.start();
998	>	Thread.sleep(SHORT_DELAY_MS);
999	>	assertFalse(l.isSignalled());
1000	>	t.interrupt();
1001	>	t.join();
1002	>	}
1003	>
1004	>	/**
1005	>	* acquireSharedTimed times out if not released before timeout
1006	>	*/
1007	>	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1008	>	final BooleanLatch l = new BooleanLatch();
1009	>	Thread t = new Thread(new CheckedRunnable() {
1010	>	public void realRun() throws InterruptedException {
1011	>	threadAssertFalse(l.isSignalled());
1012	>	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1013	>	}});
1014	>
1015	>	t.start();
1016	>	Thread.sleep(SHORT_DELAY_MS);
1017	>	assertFalse(l.isSignalled());
1018	>	t.join();
1019	>	}
1020	>
1021		}

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