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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.1 by dl, Sun Dec 28 21:56:18 2003 UTC vs.
Revision 1.31 by jsr166, Sat Nov 21 17:54:04 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
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
#	Line 22 | Line 23 | public class AbstractQueuedSynchronizerT
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	<	public int acquireExclusiveState(boolean isQueued, int acquires, Thread current) {
35	<	assert acquires == 1; // Does not use multiple acquires
36	<	return state().compareAndSet(0, 1)? 0 : -1;
37	<	}
38	<
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	<	}
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	>	assertTrue(acquires == 1);
38	>	return compareAndSetState(0, 1);
39		}
40	<
41	<	private final Sync sync = new Sync();
42	<	public void lock() { sync.acquireExclusiveUninterruptibly(1);  }
43	<	public boolean tryLock() {
44	<	return sync.acquireExclusiveState(false, 1, null) >= 0;
40	>
41	>	public boolean tryRelease(int releases) {
42	>	if (getState() == 0) throw new IllegalMonitorStateException();
43	>	setState(0);
44	>	return true;
45		}
46	<	public void lockInterruptibly() throws InterruptedException {
47	<	sync.acquireExclusiveInterruptibly(1);
46	>
47	>	public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); }
48	>
49	>	}
50	>
51	>
52	>	/**
53	>	* A simple latch class, to test shared mode.
54	>	*/
55	>	static class BooleanLatch extends AbstractQueuedSynchronizer {
56	>	public boolean isSignalled() { return getState() != 0; }
57	>
58	>	public int tryAcquireShared(int ignore) {
59	>	return isSignalled()? 1 : -1;
60		}
61	<	public boolean tryLock(long timeout, TimeUnit unit) throws InterruptedException {
62	<	return sync.acquireExclusiveTimed(1, unit.toNanos(timeout));
61	>
62	>	public boolean tryReleaseShared(int ignore) {
63	>	setState(1);
64	>	return true;
65		}
74	–	public void unlock() { sync.releaseExclusive(1); }
75	–	public Condition newCondition() { return sync.newCondition(); }
76	–	public boolean isLocked() { return sync.state().get() != 0; }
77	–	public boolean hasQueuedThreads() { return sync.hasQueuedThreads(); }
66		}
67
68		/**
69	<	* A runnable calling lockInterruptibly
70	<	*/
71	<	class InterruptibleLockRunnable implements Runnable {
72	<	final Mutex lock;
73	<	InterruptibleLockRunnable(Mutex l) { lock = l; }
74	<	public void run() {
75	<	try {
76	<	lock.lockInterruptibly();
89	<	} catch(InterruptedException success){}
69	>	* A runnable calling acquireInterruptibly that does not expect to
70	>	* be interrupted.
71	>	*/
72	>	class InterruptibleSyncRunnable extends CheckedRunnable {
73	>	final Mutex sync;
74	>	InterruptibleSyncRunnable(Mutex l) { sync = l; }
75	>	public void realRun() throws InterruptedException {
76	>	sync.acquireInterruptibly(1);
77		}
78		}
79
80
81		/**
82	<	* A runnable calling lockInterruptibly that expects to be
83	<	* interrupted
82	>	* A runnable calling acquireInterruptibly that expects to be
83	>	* interrupted.
84		*/
85	<	class InterruptedLockRunnable implements Runnable {
86	<	final Mutex lock;
87	<	InterruptedLockRunnable(Mutex l) { lock = l; }
88	<	public void run() {
89	<	try {
103	<	lock.lockInterruptibly();
104	<	threadShouldThrow();
105	<	} catch(InterruptedException success){}
85	>	class InterruptedSyncRunnable extends CheckedInterruptedRunnable {
86	>	final Mutex sync;
87	>	InterruptedSyncRunnable(Mutex l) { sync = l; }
88	>	public void realRun() throws InterruptedException {
89	>	sync.acquireInterruptibly(1);
90		}
91		}
92	<
92	>
93		/**
94	<	* locking an unlocked lock succeeds
94	>	* isHeldExclusively is false upon construction
95		*/
96	<	public void testLock() {
97	<	Mutex rl = new Mutex();
98	<	rl.lock();
115	<	assertTrue(rl.isLocked());
116	<	rl.unlock();
96	>	public void testIsHeldExclusively() {
97	>	Mutex rl = new Mutex();
98	>	assertFalse(rl.isHeldExclusively());
99		}
100
101		/**
102	<	* trylock on an unlocked lock succeeds
102	>	* acquiring released sync succeeds
103		*/
104	<	public void testTryLock() {
105	<	Mutex rl = new Mutex();
106	<	assertTrue(rl.tryLock());
107	<	assertTrue(rl.isLocked());
108	<	rl.unlock();
104	>	public void testAcquire() {
105	>	Mutex rl = new Mutex();
106	>	rl.acquire(1);
107	>	assertTrue(rl.isHeldExclusively());
108	>	rl.release(1);
109	>	assertFalse(rl.isHeldExclusively());
110	>	}
111	>
112	>	/**
113	>	* tryAcquire on an released sync succeeds
114	>	*/
115	>	public void testTryAcquire() {
116	>	Mutex rl = new Mutex();
117	>	assertTrue(rl.tryAcquire(1));
118	>	assertTrue(rl.isHeldExclusively());
119	>	rl.release(1);
120		}
121
122		/**
123		* hasQueuedThreads reports whether there are waiting threads
124		*/
125	<	public void testhasQueuedThreads() {
126	<	final Mutex lock = new Mutex();
127	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
128	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
129	<	try {
130	<	assertFalse(lock.hasQueuedThreads());
131	<	lock.lock();
132	<	t1.start();
133	<	Thread.sleep(SHORT_DELAY_MS);
134	<	assertTrue(lock.hasQueuedThreads());
135	<	t2.start();
136	<	Thread.sleep(SHORT_DELAY_MS);
137	<	assertTrue(lock.hasQueuedThreads());
138	<	t1.interrupt();
139	<	Thread.sleep(SHORT_DELAY_MS);
140	<	assertTrue(lock.hasQueuedThreads());
141	<	lock.unlock();
142	<	Thread.sleep(SHORT_DELAY_MS);
143	<	assertFalse(lock.hasQueuedThreads());
144	<	t1.join();
145	<	t2.join();
153	<	} catch(Exception e){
154	<	unexpectedException();
155	<	}
156	<	}
125	>	public void testhasQueuedThreads() throws InterruptedException {
126	>	final Mutex sync = new Mutex();
127	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
128	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
129	>	assertFalse(sync.hasQueuedThreads());
130	>	sync.acquire(1);
131	>	t1.start();
132	>	Thread.sleep(SHORT_DELAY_MS);
133	>	assertTrue(sync.hasQueuedThreads());
134	>	t2.start();
135	>	Thread.sleep(SHORT_DELAY_MS);
136	>	assertTrue(sync.hasQueuedThreads());
137	>	t1.interrupt();
138	>	Thread.sleep(SHORT_DELAY_MS);
139	>	assertTrue(sync.hasQueuedThreads());
140	>	sync.release(1);
141	>	Thread.sleep(SHORT_DELAY_MS);
142	>	assertFalse(sync.hasQueuedThreads());
143	>	t1.join();
144	>	t2.join();
145	>	}
146
147		/**
148	<	* timed trylock is interruptible.
148	>	* isQueued(null) throws NPE
149		*/
150	<	public void testInterruptedException2() {
151	<	final Mutex lock = new Mutex();
152	<	lock.lock();
153	<	Thread t = new Thread(new Runnable() {
154	<	public void run() {
155	<	try {
167	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
168	<	threadShouldThrow();
169	<	} catch(InterruptedException success){}
170	<	}
171	<	});
172	<	try {
173	<	t.start();
174	<	t.interrupt();
175	<	} catch(Exception e){
176	<	unexpectedException();
177	<	}
150	>	public void testIsQueuedNPE() {
151	>	final Mutex sync = new Mutex();
152	>	try {
153	>	sync.isQueued(null);
154	>	shouldThrow();
155	>	} catch (NullPointerException success) {}
156		}
157
158	+	/**
159	+	* isQueued reports whether a thread is queued.
160	+	*/
161	+	public void testIsQueued() throws InterruptedException {
162	+	final Mutex sync = new Mutex();
163	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
164	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
165	+	assertFalse(sync.isQueued(t1));
166	+	assertFalse(sync.isQueued(t2));
167	+	sync.acquire(1);
168	+	t1.start();
169	+	Thread.sleep(SHORT_DELAY_MS);
170	+	assertTrue(sync.isQueued(t1));
171	+	t2.start();
172	+	Thread.sleep(SHORT_DELAY_MS);
173	+	assertTrue(sync.isQueued(t1));
174	+	assertTrue(sync.isQueued(t2));
175	+	t1.interrupt();
176	+	Thread.sleep(SHORT_DELAY_MS);
177	+	assertFalse(sync.isQueued(t1));
178	+	assertTrue(sync.isQueued(t2));
179	+	sync.release(1);
180	+	Thread.sleep(SHORT_DELAY_MS);
181	+	assertFalse(sync.isQueued(t1));
182	+	Thread.sleep(SHORT_DELAY_MS);
183	+	assertFalse(sync.isQueued(t2));
184	+	t1.join();
185	+	t2.join();
186	+	}
187	+
188	+	/**
189	+	* getFirstQueuedThread returns first waiting thread or null if none
190	+	*/
191	+	public void testGetFirstQueuedThread() throws InterruptedException {
192	+	final Mutex sync = new Mutex();
193	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
194	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
195	+	assertNull(sync.getFirstQueuedThread());
196	+	sync.acquire(1);
197	+	t1.start();
198	+	Thread.sleep(SHORT_DELAY_MS);
199	+	assertEquals(t1, sync.getFirstQueuedThread());
200	+	t2.start();
201	+	Thread.sleep(SHORT_DELAY_MS);
202	+	assertEquals(t1, sync.getFirstQueuedThread());
203	+	t1.interrupt();
204	+	Thread.sleep(SHORT_DELAY_MS);
205	+	Thread.sleep(SHORT_DELAY_MS);
206	+	assertEquals(t2, sync.getFirstQueuedThread());
207	+	sync.release(1);
208	+	Thread.sleep(SHORT_DELAY_MS);
209	+	assertNull(sync.getFirstQueuedThread());
210	+	t1.join();
211	+	t2.join();
212	+	}
213	+
214	+
215	+	/**
216	+	* hasContended reports false if no thread has ever blocked, else true
217	+	*/
218	+	public void testHasContended() throws InterruptedException {
219	+	final Mutex sync = new Mutex();
220	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
221	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
222	+	assertFalse(sync.hasContended());
223	+	sync.acquire(1);
224	+	t1.start();
225	+	Thread.sleep(SHORT_DELAY_MS);
226	+	assertTrue(sync.hasContended());
227	+	t2.start();
228	+	Thread.sleep(SHORT_DELAY_MS);
229	+	assertTrue(sync.hasContended());
230	+	t1.interrupt();
231	+	Thread.sleep(SHORT_DELAY_MS);
232	+	assertTrue(sync.hasContended());
233	+	sync.release(1);
234	+	Thread.sleep(SHORT_DELAY_MS);
235	+	assertTrue(sync.hasContended());
236	+	t1.join();
237	+	t2.join();
238	+	}
239	+
240	+	/**
241	+	* getQueuedThreads includes waiting threads
242	+	*/
243	+	public void testGetQueuedThreads() throws InterruptedException {
244	+	final Mutex sync = new Mutex();
245	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
246	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
247	+	assertTrue(sync.getQueuedThreads().isEmpty());
248	+	sync.acquire(1);
249	+	assertTrue(sync.getQueuedThreads().isEmpty());
250	+	t1.start();
251	+	Thread.sleep(SHORT_DELAY_MS);
252	+	assertTrue(sync.getQueuedThreads().contains(t1));
253	+	t2.start();
254	+	Thread.sleep(SHORT_DELAY_MS);
255	+	assertTrue(sync.getQueuedThreads().contains(t1));
256	+	assertTrue(sync.getQueuedThreads().contains(t2));
257	+	t1.interrupt();
258	+	Thread.sleep(SHORT_DELAY_MS);
259	+	assertFalse(sync.getQueuedThreads().contains(t1));
260	+	assertTrue(sync.getQueuedThreads().contains(t2));
261	+	sync.release(1);
262	+	Thread.sleep(SHORT_DELAY_MS);
263	+	assertTrue(sync.getQueuedThreads().isEmpty());
264	+	t1.join();
265	+	t2.join();
266	+	}
267	+
268	+	/**
269	+	* getExclusiveQueuedThreads includes waiting threads
270	+	*/
271	+	public void testGetExclusiveQueuedThreads() throws InterruptedException {
272	+	final Mutex sync = new Mutex();
273	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
274	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
275	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
276	+	sync.acquire(1);
277	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
278	+	t1.start();
279	+	Thread.sleep(SHORT_DELAY_MS);
280	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
281	+	t2.start();
282	+	Thread.sleep(SHORT_DELAY_MS);
283	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
284	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
285	+	t1.interrupt();
286	+	Thread.sleep(SHORT_DELAY_MS);
287	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
288	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
289	+	sync.release(1);
290	+	Thread.sleep(SHORT_DELAY_MS);
291	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
292	+	t1.join();
293	+	t2.join();
294	+	}
295	+
296	+	/**
297	+	* getSharedQueuedThreads does not include exclusively waiting threads
298	+	*/
299	+	public void testGetSharedQueuedThreads() throws InterruptedException {
300	+	final Mutex sync = new Mutex();
301	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
302	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
303	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
304	+	sync.acquire(1);
305	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
306	+	t1.start();
307	+	Thread.sleep(SHORT_DELAY_MS);
308	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
309	+	t2.start();
310	+	Thread.sleep(SHORT_DELAY_MS);
311	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
312	+	t1.interrupt();
313	+	Thread.sleep(SHORT_DELAY_MS);
314	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
315	+	sync.release(1);
316	+	Thread.sleep(SHORT_DELAY_MS);
317	+	assertTrue(sync.getSharedQueuedThreads().isEmpty());
318	+	t1.join();
319	+	t2.join();
320	+	}
321	+
322	+	/**
323	+	* tryAcquireNanos is interruptible.
324	+	*/
325	+	public void testInterruptedException2() throws InterruptedException {
326	+	final Mutex sync = new Mutex();
327	+	sync.acquire(1);
328	+	Thread t = new Thread(new CheckedInterruptedRunnable() {
329	+	public void realRun() throws InterruptedException {
330	+	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
331	+	}});
332	+
333	+	t.start();
334	+	t.interrupt();
335	+	t.join();
336	+	}
337	+
338	+
339	+	/**
340	+	* TryAcquire on exclusively held sync fails
341	+	*/
342	+	public void testTryAcquireWhenSynced() throws InterruptedException {
343	+	final Mutex sync = new Mutex();
344	+	sync.acquire(1);
345	+	Thread t = new Thread(new CheckedRunnable() {
346	+	public void realRun() {
347	+	threadAssertFalse(sync.tryAcquire(1));
348	+	}});
349	+
350	+	t.start();
351	+	t.join();
352	+	sync.release(1);
353	+	}
354	+
355	+	/**
356	+	* tryAcquireNanos on an exclusively held sync times out
357	+	*/
358	+	public void testAcquireNanos_Timeout() throws InterruptedException {
359	+	final Mutex sync = new Mutex();
360	+	sync.acquire(1);
361	+	Thread t = new Thread(new CheckedRunnable() {
362	+	public void realRun() throws InterruptedException {
363	+	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
364	+	}});
365	+
366	+	t.start();
367	+	t.join();
368	+	sync.release(1);
369	+	}
370	+
371	+
372	+	/**
373	+	* getState is true when acquired and false when not
374	+	*/
375	+	public void testGetState() throws InterruptedException {
376	+	final Mutex sync = new Mutex();
377	+	sync.acquire(1);
378	+	assertTrue(sync.isHeldExclusively());
379	+	sync.release(1);
380	+	assertFalse(sync.isHeldExclusively());
381	+	Thread t = new Thread(new CheckedRunnable() {
382	+	public void realRun() throws InterruptedException {
383	+	sync.acquire(1);
384	+	Thread.sleep(SMALL_DELAY_MS);
385	+	sync.release(1);
386	+	}});
387	+
388	+	t.start();
389	+	Thread.sleep(SHORT_DELAY_MS);
390	+	assertTrue(sync.isHeldExclusively());
391	+	t.join();
392	+	assertFalse(sync.isHeldExclusively());
393	+	}
394	+
395	+
396	+	/**
397	+	* acquireInterruptibly is interruptible.
398	+	*/
399	+	public void testAcquireInterruptibly1() throws InterruptedException {
400	+	final Mutex sync = new Mutex();
401	+	sync.acquire(1);
402	+	Thread t = new Thread(new InterruptedSyncRunnable(sync));
403	+
404	+	t.start();
405	+	Thread.sleep(SHORT_DELAY_MS);
406	+	t.interrupt();
407	+	Thread.sleep(SHORT_DELAY_MS);
408	+	sync.release(1);
409	+	t.join();
410	+	}
411	+
412	+	/**
413	+	* acquireInterruptibly succeeds when released, else is interruptible
414	+	*/
415	+	public void testAcquireInterruptibly2() throws InterruptedException {
416	+	final Mutex sync = new Mutex();
417	+	sync.acquireInterruptibly(1);
418	+	Thread t = new Thread(new InterruptedSyncRunnable(sync));
419	+	t.start();
420	+	t.interrupt();
421	+	assertTrue(sync.isHeldExclusively());
422	+	t.join();
423	+	}
424	+
425	+	/**
426	+	* owns is true for a condition created by sync else false
427	+	*/
428	+	public void testOwns() {
429	+	final Mutex sync = new Mutex();
430	+	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
431	+	final Mutex sync2 = new Mutex();
432	+	assertTrue(sync.owns(c));
433	+	assertFalse(sync2.owns(c));
434	+	}
435	+
436	+	/**
437	+	* Calling await without holding sync throws IllegalMonitorStateException
438	+	*/
439	+	public void testAwait_IllegalMonitor() throws InterruptedException {
440	+	final Mutex sync = new Mutex();
441	+	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
442	+	try {
443	+	c.await();
444	+	shouldThrow();
445	+	} catch (IllegalMonitorStateException success) {}
446	+	}
447
448		/**
449	<	* Trylock on a locked lock fails
449	>	* Calling signal without holding sync throws IllegalMonitorStateException
450		*/
451	<	public void testTryLockWhenLocked() {
452	<	final Mutex lock = new Mutex();
453	<	lock.lock();
454	<	Thread t = new Thread(new Runnable() {
455	<	public void run() {
456	<	threadAssertFalse(lock.tryLock());
457	<	}
458	<	});
192	<	try {
193	<	t.start();
194	<	t.join();
195	<	lock.unlock();
196	<	} catch(Exception e){
197	<	unexpectedException();
198	<	}
199	<	}
451	>	public void testSignal_IllegalMonitor() {
452	>	final Mutex sync = new Mutex();
453	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
454	>	try {
455	>	c.signal();
456	>	shouldThrow();
457	>	} catch (IllegalMonitorStateException success) {}
458	>	}
459
460		/**
461	<	* Timed trylock on a locked lock times out
461	>	* awaitNanos without a signal times out
462		*/
463	<	public void testTryLock_Timeout() {
464	<	final Mutex lock = new Mutex();
465	<	lock.lock();
466	<	Thread t = new Thread(new Runnable() {
467	<	public void run() {
468	<	try {
469	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
470	<	} catch (Exception ex) {
471	<	threadUnexpectedException();
472	<	}
473	<	}
474	<	});
475	<	try {
476	<	t.start();
477	<	t.join();
478	<	lock.unlock();
479	<	} catch(Exception e){
480	<	unexpectedException();
222	<	}
223	<	}
224	<
225	<
226	<	/**
227	<	* isLocked is true when locked and false when not
228	<	*/
229	<	public void testIsLocked() {
230	<	final Mutex lock = new Mutex();
231	<	lock.lock();
232	<	assertTrue(lock.isLocked());
233	<	lock.unlock();
234	<	assertFalse(lock.isLocked());
235	<	Thread t = new Thread(new Runnable() {
236	<	public void run() {
237	<	lock.lock();
238	<	try {
239	<	Thread.sleep(SMALL_DELAY_MS);
240	<	}
241	<	catch(Exception e) {
242	<	threadUnexpectedException();
243	<	}
244	<	lock.unlock();
245	<	}
246	<	});
247	<	try {
248	<	t.start();
249	<	Thread.sleep(SHORT_DELAY_MS);
250	<	assertTrue(lock.isLocked());
251	<	t.join();
252	<	assertFalse(lock.isLocked());
253	<	} catch(Exception e){
254	<	unexpectedException();
255	<	}
463	>	public void testAwaitNanos_Timeout() throws InterruptedException {
464	>	final Mutex sync = new Mutex();
465	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
466	>	sync.acquire(1);
467	>	long t = c.awaitNanos(100);
468	>	assertTrue(t <= 0);
469	>	sync.release(1);
470	>	}
471	>
472	>	/**
473	>	*  Timed await without a signal times out
474	>	*/
475	>	public void testAwait_Timeout() throws InterruptedException {
476	>	final Mutex sync = new Mutex();
477	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
478	>	sync.acquire(1);
479	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
480	>	sync.release(1);
481		}
482
483	+	/**
484	+	* awaitUntil without a signal times out
485	+	*/
486	+	public void testAwaitUntil_Timeout() throws InterruptedException {
487	+	final Mutex sync = new Mutex();
488	+	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
489	+	sync.acquire(1);
490	+	java.util.Date d = new java.util.Date();
491	+	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
492	+	sync.release(1);
493	+	}
494
495		/**
496	<	* lockInterruptibly is interruptible.
496	>	* await returns when signalled
497		*/
498	<	public void testLockInterruptibly1() {
499	<	final Mutex lock = new Mutex();
500	<	lock.lock();
501	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
502	<	try {
503	<	t.start();
504	<	t.interrupt();
505	<	lock.unlock();
506	<	t.join();
507	<	} catch(Exception e){
508	<	unexpectedException();
509	<	}
510	<	}
498	>	public void testAwait() throws InterruptedException {
499	>	final Mutex sync = new Mutex();
500	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
501	>	Thread t = new Thread(new CheckedRunnable() {
502	>	public void realRun() throws InterruptedException {
503	>	sync.acquire(1);
504	>	c.await();
505	>	sync.release(1);
506	>	}});
507	>
508	>	t.start();
509	>	Thread.sleep(SHORT_DELAY_MS);
510	>	sync.acquire(1);
511	>	c.signal();
512	>	sync.release(1);
513	>	t.join(SHORT_DELAY_MS);
514	>	assertFalse(t.isAlive());
515	>	}
516	>
517	>
518
519		/**
520	<	* lockInterruptibly succeeds when unlocked, else is interruptible
520	>	* hasWaiters throws NPE if null
521		*/
522	<	public void testLockInterruptibly2() {
523	<	final Mutex lock = new Mutex();
281	<	try {
282	<	lock.lockInterruptibly();
283	<	} catch(Exception e) {
284	<	unexpectedException();
285	<	}
286	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
522	>	public void testHasWaitersNPE() {
523	>	final Mutex sync = new Mutex();
524		try {
525	<	t.start();
526	<	t.interrupt();
527	<	assertTrue(lock.isLocked());
291	<	t.join();
292	<	} catch(Exception e){
293	<	unexpectedException();
294	<	}
525	>	sync.hasWaiters(null);
526	>	shouldThrow();
527	>	} catch (NullPointerException success) {}
528		}
529
530		/**
531	<	* Calling await without holding lock throws IllegalMonitorStateException
531	>	* getWaitQueueLength throws NPE if null
532		*/
533	<	public void testAwait_IllegalMonitor() {
534	<	final Mutex lock = new Mutex();
302	<	final Condition c = lock.newCondition();
533	>	public void testGetWaitQueueLengthNPE() {
534	>	final Mutex sync = new Mutex();
535		try {
536	<	c.await();
536	>	sync.getWaitQueueLength(null);
537		shouldThrow();
538	<	}
307	<	catch (IllegalMonitorStateException success) {
308	<	}
309	<	catch (Exception ex) {
310	<	unexpectedException();
311	<	}
538	>	} catch (NullPointerException success) {}
539		}
540
541	+
542		/**
543	<	* Calling signal without holding lock throws IllegalMonitorStateException
543	>	* getWaitingThreads throws NPE if null
544		*/
545	<	public void testSignal_IllegalMonitor() {
546	<	final Mutex lock = new Mutex();
319	<	final Condition c = lock.newCondition();
545	>	public void testGetWaitingThreadsNPE() {
546	>	final Mutex sync = new Mutex();
547		try {
548	<	c.signal();
548	>	sync.getWaitingThreads(null);
549		shouldThrow();
550	<	}
324	<	catch (IllegalMonitorStateException success) {
325	<	}
326	<	catch (Exception ex) {
327	<	unexpectedException();
328	<	}
550	>	} catch (NullPointerException success) {}
551		}
552
553	+
554		/**
555	<	* awaitNanos without a signal times out
555	>	* hasWaiters throws IAE if not owned
556		*/
557	<	public void testAwaitNanos_Timeout() {
558	<	final Mutex lock = new Mutex();
559	<	final Condition c = lock.newCondition();
560	<	try {
561	<	lock.lock();
562	<	long t = c.awaitNanos(100);
563	<	assertTrue(t <= 0);
564	<	lock.unlock();
342	<	}
343	<	catch (Exception ex) {
344	<	unexpectedException();
345	<	}
557	>	public void testHasWaitersIAE() {
558	>	final Mutex sync = new Mutex();
559	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
560	>	final Mutex sync2 = new Mutex();
561	>	try {
562	>	sync2.hasWaiters(c);
563	>	shouldThrow();
564	>	} catch (IllegalArgumentException success) {}
565		}
566
567		/**
568	<	*  timed await without a signal times out
568	>	* hasWaiters throws IMSE if not synced
569		*/
570	<	public void testAwait_Timeout() {
571	<	final Mutex lock = new Mutex();
572	<	final Condition c = lock.newCondition();
573	<	try {
574	<	lock.lock();
575	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
576	<	lock.unlock();
358	<	}
359	<	catch (Exception ex) {
360	<	unexpectedException();
361	<	}
570	>	public void testHasWaitersIMSE() {
571	>	final Mutex sync = new Mutex();
572	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
573	>	try {
574	>	sync.hasWaiters(c);
575	>	shouldThrow();
576	>	} catch (IllegalMonitorStateException success) {}
577		}
578
579	+
580		/**
581	<	* awaitUntil without a signal times out
581	>	* getWaitQueueLength throws IAE if not owned
582		*/
583	<	public void testAwaitUntil_Timeout() {
584	<	final Mutex lock = new Mutex();
585	<	final Condition c = lock.newCondition();
586	<	try {
587	<	lock.lock();
588	<	java.util.Date d = new java.util.Date();
589	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
590	<	lock.unlock();
375	<	}
376	<	catch (Exception ex) {
377	<	unexpectedException();
378	<	}
583	>	public void testGetWaitQueueLengthIAE() {
584	>	final Mutex sync = new Mutex();
585	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
586	>	final Mutex sync2 = new Mutex();
587	>	try {
588	>	sync2.getWaitQueueLength(c);
589	>	shouldThrow();
590	>	} catch (IllegalArgumentException success) {}
591		}
592
593		/**
594	<	* await returns when signalled
594	>	* getWaitQueueLength throws IMSE if not synced
595		*/
596	<	public void testAwait() {
597	<	final Mutex lock = new Mutex();
598	<	final Condition c = lock.newCondition();
599	<	Thread t = new Thread(new Runnable() {
600	<	public void run() {
601	<	try {
602	<	lock.lock();
603	<	c.await();
604	<	lock.unlock();
605	<	}
606	<	catch(InterruptedException e) {
607	<	threadUnexpectedException();
608	<	}
609	<	}
610	<	});
611	<
612	<	try {
613	<	t.start();
614	<	Thread.sleep(SHORT_DELAY_MS);
615	<	lock.lock();
616	<	c.signal();
405	<	lock.unlock();
406	<	t.join(SHORT_DELAY_MS);
407	<	assertFalse(t.isAlive());
408	<	}
409	<	catch (Exception ex) {
410	<	unexpectedException();
411	<	}
596	>	public void testGetWaitQueueLengthIMSE() {
597	>	final Mutex sync = new Mutex();
598	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
599	>	try {
600	>	sync.getWaitQueueLength(c);
601	>	shouldThrow();
602	>	} catch (IllegalMonitorStateException success) {}
603	>	}
604	>
605	>
606	>	/**
607	>	* getWaitingThreads throws IAE if not owned
608	>	*/
609	>	public void testGetWaitingThreadsIAE() {
610	>	final Mutex sync = new Mutex();
611	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
612	>	final Mutex sync2 = new Mutex();
613	>	try {
614	>	sync2.getWaitingThreads(c);
615	>	shouldThrow();
616	>	} catch (IllegalArgumentException success) {}
617		}
618	<
618	>
619	>	/**
620	>	* getWaitingThreads throws IMSE if not synced
621	>	*/
622	>	public void testGetWaitingThreadsIMSE() {
623	>	final Mutex sync = new Mutex();
624	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
625	>	try {
626	>	sync.getWaitingThreads(c);
627	>	shouldThrow();
628	>	} catch (IllegalMonitorStateException success) {}
629	>	}
630	>
631	>
632	>
633	>	/**
634	>	* hasWaiters returns true when a thread is waiting, else false
635	>	*/
636	>	public void testHasWaiters() throws InterruptedException {
637	>	final Mutex sync = new Mutex();
638	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
639	>	Thread t = new Thread(new CheckedRunnable() {
640	>	public void realRun() throws InterruptedException {
641	>	sync.acquire(1);
642	>	threadAssertFalse(sync.hasWaiters(c));
643	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
644	>	c.await();
645	>	sync.release(1);
646	>	}});
647	>
648	>	t.start();
649	>	Thread.sleep(SHORT_DELAY_MS);
650	>	sync.acquire(1);
651	>	assertTrue(sync.hasWaiters(c));
652	>	assertEquals(1, sync.getWaitQueueLength(c));
653	>	c.signal();
654	>	sync.release(1);
655	>	Thread.sleep(SHORT_DELAY_MS);
656	>	sync.acquire(1);
657	>	assertFalse(sync.hasWaiters(c));
658	>	assertEquals(0, sync.getWaitQueueLength(c));
659	>	sync.release(1);
660	>	t.join(SHORT_DELAY_MS);
661	>	assertFalse(t.isAlive());
662	>	}
663	>
664	>	/**
665	>	* getWaitQueueLength returns number of waiting threads
666	>	*/
667	>	public void testGetWaitQueueLength() throws InterruptedException {
668	>	final Mutex sync = new Mutex();
669	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
670	>	Thread t1 = new Thread(new CheckedRunnable() {
671	>	public void realRun() throws InterruptedException {
672	>	sync.acquire(1);
673	>	threadAssertFalse(sync.hasWaiters(c));
674	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
675	>	c.await();
676	>	sync.release(1);
677	>	}});
678	>
679	>	Thread t2 = new Thread(new CheckedRunnable() {
680	>	public void realRun() throws InterruptedException {
681	>	sync.acquire(1);
682	>	threadAssertTrue(sync.hasWaiters(c));
683	>	threadAssertEquals(1, sync.getWaitQueueLength(c));
684	>	c.await();
685	>	sync.release(1);
686	>	}});
687	>
688	>	t1.start();
689	>	Thread.sleep(SHORT_DELAY_MS);
690	>	t2.start();
691	>	Thread.sleep(SHORT_DELAY_MS);
692	>	sync.acquire(1);
693	>	assertTrue(sync.hasWaiters(c));
694	>	assertEquals(2, sync.getWaitQueueLength(c));
695	>	c.signalAll();
696	>	sync.release(1);
697	>	Thread.sleep(SHORT_DELAY_MS);
698	>	sync.acquire(1);
699	>	assertFalse(sync.hasWaiters(c));
700	>	assertEquals(0, sync.getWaitQueueLength(c));
701	>	sync.release(1);
702	>	t1.join(SHORT_DELAY_MS);
703	>	t2.join(SHORT_DELAY_MS);
704	>	assertFalse(t1.isAlive());
705	>	assertFalse(t2.isAlive());
706	>	}
707	>
708	>	/**
709	>	* getWaitingThreads returns only and all waiting threads
710	>	*/
711	>	public void testGetWaitingThreads() throws InterruptedException {
712	>	final Mutex sync = new Mutex();
713	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
714	>	Thread t1 = new Thread(new CheckedRunnable() {
715	>	public void realRun() throws InterruptedException {
716	>	sync.acquire(1);
717	>	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
718	>	c.await();
719	>	sync.release(1);
720	>	}});
721	>
722	>	Thread t2 = new Thread(new CheckedRunnable() {
723	>	public void realRun() throws InterruptedException {
724	>	sync.acquire(1);
725	>	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
726	>	c.await();
727	>	sync.release(1);
728	>	}});
729	>
730	>	sync.acquire(1);
731	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
732	>	sync.release(1);
733	>	t1.start();
734	>	Thread.sleep(SHORT_DELAY_MS);
735	>	t2.start();
736	>	Thread.sleep(SHORT_DELAY_MS);
737	>	sync.acquire(1);
738	>	assertTrue(sync.hasWaiters(c));
739	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
740	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
741	>	c.signalAll();
742	>	sync.release(1);
743	>	Thread.sleep(SHORT_DELAY_MS);
744	>	sync.acquire(1);
745	>	assertFalse(sync.hasWaiters(c));
746	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
747	>	sync.release(1);
748	>	t1.join(SHORT_DELAY_MS);
749	>	t2.join(SHORT_DELAY_MS);
750	>	assertFalse(t1.isAlive());
751	>	assertFalse(t2.isAlive());
752	>	}
753	>
754	>
755	>
756	>	/**
757	>	* awaitUninterruptibly doesn't abort on interrupt
758	>	*/
759	>	public void testAwaitUninterruptibly() throws InterruptedException {
760	>	final Mutex sync = new Mutex();
761	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
762	>	Thread t = new Thread(new CheckedRunnable() {
763	>	public void realRun() {
764	>	sync.acquire(1);
765	>	c.awaitUninterruptibly();
766	>	sync.release(1);
767	>	}});
768	>
769	>	t.start();
770	>	Thread.sleep(SHORT_DELAY_MS);
771	>	t.interrupt();
772	>	sync.acquire(1);
773	>	c.signal();
774	>	sync.release(1);
775	>	t.join(SHORT_DELAY_MS);
776	>	assertFalse(t.isAlive());
777	>	}
778	>
779	>	/**
780	>	* await is interruptible
781	>	*/
782	>	public void testAwait_Interrupt() throws InterruptedException {
783	>	final Mutex sync = new Mutex();
784	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
785	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
786	>	public void realRun() throws InterruptedException {
787	>	sync.acquire(1);
788	>	c.await();
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	>	}});
809	>
810	>	t.start();
811	>	Thread.sleep(SHORT_DELAY_MS);
812	>	t.interrupt();
813	>	t.join(SHORT_DELAY_MS);
814	>	assertFalse(t.isAlive());
815	>	}
816	>
817	>	/**
818	>	* awaitUntil is interruptible
819	>	*/
820	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
821	>	final Mutex sync = new Mutex();
822	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
823	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
824	>	public void realRun() throws InterruptedException {
825	>	sync.acquire(1);
826	>	java.util.Date d = new java.util.Date();
827	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
828	>	}});
829	>
830	>	t.start();
831	>	Thread.sleep(SHORT_DELAY_MS);
832	>	t.interrupt();
833	>	t.join(SHORT_DELAY_MS);
834	>	assertFalse(t.isAlive());
835	>	}
836	>
837	>	/**
838	>	* signalAll wakes up all threads
839	>	*/
840	>	public void testSignalAll() throws InterruptedException {
841	>	final Mutex sync = new Mutex();
842	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
843	>	Thread t1 = new Thread(new CheckedRunnable() {
844	>	public void realRun() throws InterruptedException {
845	>	sync.acquire(1);
846	>	c.await();
847	>	sync.release(1);
848	>	}});
849	>
850	>	Thread t2 = new Thread(new CheckedRunnable() {
851	>	public void realRun() throws InterruptedException {
852	>	sync.acquire(1);
853	>	c.await();
854	>	sync.release(1);
855	>	}});
856	>
857	>	t1.start();
858	>	t2.start();
859	>	Thread.sleep(SHORT_DELAY_MS);
860	>	sync.acquire(1);
861	>	c.signalAll();
862	>	sync.release(1);
863	>	t1.join(SHORT_DELAY_MS);
864	>	t2.join(SHORT_DELAY_MS);
865	>	assertFalse(t1.isAlive());
866	>	assertFalse(t2.isAlive());
867	>	}
868	>
869	>
870	>	/**
871	>	* toString indicates current state
872	>	*/
873	>	public void testToString() {
874	>	Mutex sync = new Mutex();
875	>	String us = sync.toString();
876	>	assertTrue(us.indexOf("State = 0") >= 0);
877	>	sync.acquire(1);
878	>	String ls = sync.toString();
879	>	assertTrue(ls.indexOf("State = 1") >= 0);
880	>	}
881	>
882	>	/**
883	>	* A serialized AQS deserializes with current state
884	>	*/
885	>	public void testSerialization() throws Exception {
886	>	Mutex l = new Mutex();
887	>	l.acquire(1);
888	>	assertTrue(l.isHeldExclusively());
889	>
890	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
891	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
892	>	out.writeObject(l);
893	>	out.close();
894	>
895	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
896	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
897	>	Mutex r = (Mutex) in.readObject();
898	>	assertTrue(r.isHeldExclusively());
899	>	}
900	>
901	>
902	>	/**
903	>	* tryReleaseShared setting state changes getState
904	>	*/
905	>	public void testGetStateWithReleaseShared() {
906	>	final BooleanLatch l = new BooleanLatch();
907	>	assertFalse(l.isSignalled());
908	>	l.releaseShared(0);
909	>	assertTrue(l.isSignalled());
910	>	}
911	>
912	>	/**
913	>	* releaseShared has no effect when already signalled
914	>	*/
915	>	public void testReleaseShared() {
916	>	final BooleanLatch l = new BooleanLatch();
917	>	assertFalse(l.isSignalled());
918	>	l.releaseShared(0);
919	>	assertTrue(l.isSignalled());
920	>	l.releaseShared(0);
921	>	assertTrue(l.isSignalled());
922	>	}
923	>
924	>	/**
925	>	* acquireSharedInterruptibly returns after release, but not before
926	>	*/
927	>	public void testAcquireSharedInterruptibly() throws InterruptedException {
928	>	final BooleanLatch l = new BooleanLatch();
929	>
930	>	Thread t = new Thread(new CheckedRunnable() {
931	>	public void realRun() throws InterruptedException {
932	>	threadAssertFalse(l.isSignalled());
933	>	l.acquireSharedInterruptibly(0);
934	>	threadAssertTrue(l.isSignalled());
935	>	}});
936	>
937	>	t.start();
938	>	assertFalse(l.isSignalled());
939	>	Thread.sleep(SHORT_DELAY_MS);
940	>	l.releaseShared(0);
941	>	assertTrue(l.isSignalled());
942	>	t.join();
943	>	}
944	>
945	>
946	>	/**
947	>	* acquireSharedTimed returns after release
948	>	*/
949	>	public void testAsquireSharedTimed() throws InterruptedException {
950	>	final BooleanLatch l = new BooleanLatch();
951	>
952	>	Thread t = new Thread(new CheckedRunnable() {
953	>	public void realRun() throws InterruptedException {
954	>	threadAssertFalse(l.isSignalled());
955	>	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
956	>	threadAssertTrue(l.isSignalled());
957	>	}});
958	>
959	>	t.start();
960	>	assertFalse(l.isSignalled());
961	>	Thread.sleep(SHORT_DELAY_MS);
962	>	l.releaseShared(0);
963	>	assertTrue(l.isSignalled());
964	>	t.join();
965	>	}
966	>
967	>	/**
968	>	* acquireSharedInterruptibly throws IE if interrupted before released
969	>	*/
970	>	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
971	>	final BooleanLatch l = new BooleanLatch();
972	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
973	>	public void realRun() throws InterruptedException {
974	>	threadAssertFalse(l.isSignalled());
975	>	l.acquireSharedInterruptibly(0);
976	>	}});
977	>
978	>	t.start();
979	>	assertFalse(l.isSignalled());
980	>	t.interrupt();
981	>	t.join();
982	>	}
983	>
984	>	/**
985	>	* acquireSharedTimed throws IE if interrupted before released
986	>	*/
987	>	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
988	>	final BooleanLatch l = new BooleanLatch();
989	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
990	>	public void realRun() throws InterruptedException {
991	>	threadAssertFalse(l.isSignalled());
992	>	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
993	>	}});
994	>
995	>	t.start();
996	>	Thread.sleep(SHORT_DELAY_MS);
997	>	assertFalse(l.isSignalled());
998	>	t.interrupt();
999	>	t.join();
1000	>	}
1001	>
1002	>	/**
1003	>	* acquireSharedTimed times out if not released before timeout
1004	>	*/
1005	>	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1006	>	final BooleanLatch l = new BooleanLatch();
1007	>	Thread t = new Thread(new CheckedRunnable() {
1008	>	public void realRun() throws InterruptedException {
1009	>	threadAssertFalse(l.isSignalled());
1010	>	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1011	>	}});
1012	>
1013	>	t.start();
1014	>	Thread.sleep(SHORT_DELAY_MS);
1015	>	assertFalse(l.isSignalled());
1016	>	t.join();
1017	>	}
1018	>
1019		}

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