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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.11 by dl, Thu Jan 8 01:29:46 2004 UTC vs.
Revision 1.27 by jsr166, Wed Nov 18 08:26:24 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	<	boolean isLocked() { return getState() == 1; }
34	<
35	<	public boolean tryAcquireExclusive(int acquires) {
36	<	assert acquires == 1; // Does not use multiple acquires
37	<	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) {
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	<	}
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	<
40	<	private final Sync sync = new Sync();
41	<	public boolean tryLock() {
42	<	return sync.tryAcquireExclusive(1);
43	<	}
62	<	public void lock() {
63	<	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		}
71	–	public void unlock() { sync.releaseExclusive(1); }
72	–	public Condition newCondition() { return sync.newCondition(); }
73	–	public boolean isLocked() { return sync.isLocked(); }
74	–	public boolean hasQueuedThreads() { return sync.hasQueuedThreads(); }
75	–	public boolean hasContended() { return sync.hasContended(); }
76	–	public boolean isQueued(Thread t) { return sync.isQueued(t); }
65		}
66
67		/**
68	<	* A runnable calling lockInterruptibly
68	>	* A runnable calling acquireInterruptibly
69		*/
70	<	class InterruptibleLockRunnable implements Runnable {
71	<	final Mutex lock;
72	<	InterruptibleLockRunnable(Mutex l) { lock = l; }
70	>	class InterruptibleSyncRunnable implements Runnable {
71	>	final Mutex sync;
72	>	InterruptibleSyncRunnable(Mutex l) { sync = l; }
73		public void run() {
74		try {
75	<	lock.lockInterruptibly();
76	<	} catch(InterruptedException success){}
75	>	sync.acquireInterruptibly(1);
76	>	} catch (InterruptedException success) {}
77		}
78		}
79
80
81		/**
82	<	* A runnable calling lockInterruptibly that expects to be
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; }
85	>	class InterruptedSyncRunnable implements Runnable {
86	>	final Mutex sync;
87	>	InterruptedSyncRunnable(Mutex l) { sync = l; }
88		public void run() {
89		try {
90	<	lock.lockInterruptibly();
90	>	sync.acquireInterruptibly(1);
91		threadShouldThrow();
92	<	} catch(InterruptedException success){}
92	>	} catch (InterruptedException success) {}
93		}
94		}
95	<
95	>
96		/**
97	<	* locking an unlocked lock succeeds
97	>	* isHeldExclusively is false upon construction
98		*/
99	<	public void testLock() {
99	>	public void testIsHeldExclusively() {
100		Mutex rl = new Mutex();
101	<	rl.lock();
114	<	assertTrue(rl.isLocked());
115	<	rl.unlock();
101	>	assertFalse(rl.isHeldExclusively());
102		}
103
104		/**
105	<	* tryLock on an unlocked lock succeeds
105	>	* acquiring released sync succeeds
106		*/
107	<	public void testTryLock() {
107	>	public void testAcquire() {
108		Mutex rl = new Mutex();
109	<	assertTrue(rl.tryLock());
110	<	assertTrue(rl.isLocked());
111	<	rl.unlock();
109	>	rl.acquire(1);
110	>	assertTrue(rl.isHeldExclusively());
111	>	rl.release(1);
112	>	assertFalse(rl.isHeldExclusively());
113	>	}
114	>
115	>	/**
116	>	* tryAcquire on an released sync succeeds
117	>	*/
118	>	public void testTryAcquire() {
119	>	Mutex rl = new Mutex();
120	>	assertTrue(rl.tryAcquire(1));
121	>	assertTrue(rl.isHeldExclusively());
122	>	rl.release(1);
123		}
124
125		/**
126		* hasQueuedThreads reports whether there are waiting threads
127		*/
128	<	public void testhasQueuedThreads() {
129	<	final Mutex lock = new Mutex();
130	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
131	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
132	<	try {
133	<	assertFalse(lock.hasQueuedThreads());
134	<	lock.lock();
135	<	t1.start();
136	<	Thread.sleep(SHORT_DELAY_MS);
137	<	assertTrue(lock.hasQueuedThreads());
138	<	t2.start();
139	<	Thread.sleep(SHORT_DELAY_MS);
140	<	assertTrue(lock.hasQueuedThreads());
141	<	t1.interrupt();
142	<	Thread.sleep(SHORT_DELAY_MS);
143	<	assertTrue(lock.hasQueuedThreads());
144	<	lock.unlock();
145	<	Thread.sleep(SHORT_DELAY_MS);
146	<	assertFalse(lock.hasQueuedThreads());
147	<	t1.join();
148	<	t2.join();
152	<	} catch(Exception e){
153	<	unexpectedException();
154	<	}
155	<	}
128	>	public void testhasQueuedThreads() throws InterruptedException {
129	>	final Mutex sync = new Mutex();
130	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
131	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
132	>	assertFalse(sync.hasQueuedThreads());
133	>	sync.acquire(1);
134	>	t1.start();
135	>	Thread.sleep(SHORT_DELAY_MS);
136	>	assertTrue(sync.hasQueuedThreads());
137	>	t2.start();
138	>	Thread.sleep(SHORT_DELAY_MS);
139	>	assertTrue(sync.hasQueuedThreads());
140	>	t1.interrupt();
141	>	Thread.sleep(SHORT_DELAY_MS);
142	>	assertTrue(sync.hasQueuedThreads());
143	>	sync.release(1);
144	>	Thread.sleep(SHORT_DELAY_MS);
145	>	assertFalse(sync.hasQueuedThreads());
146	>	t1.join();
147	>	t2.join();
148	>	}
149
150		/**
151		* isQueued(null) throws NPE
152		*/
153	<	public void testIsQueuedNPE() {
154	<	final Mutex lock = new Mutex();
153	>	public void testIsQueuedNPE() {
154	>	final Mutex sync = new Mutex();
155		try {
156	<	lock.isQueued(null);
156	>	sync.isQueued(null);
157		shouldThrow();
158	<	} catch (NullPointerException success) {
166	<	}
158	>	} catch (NullPointerException success) {}
159		}
160
161		/**
162		* isQueued reports whether a thread is queued.
163		*/
164	<	public void testIsQueued() {
165	<	final Mutex lock = new Mutex();
166	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
167	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
168	<	try {
169	<	assertFalse(lock.isQueued(t1));
170	<	assertFalse(lock.isQueued(t2));
171	<	lock.lock();
172	<	t1.start();
173	<	Thread.sleep(SHORT_DELAY_MS);
174	<	assertTrue(lock.isQueued(t1));
175	<	t2.start();
176	<	Thread.sleep(SHORT_DELAY_MS);
177	<	assertTrue(lock.isQueued(t1));
178	<	assertTrue(lock.isQueued(t2));
179	<	t1.interrupt();
180	<	Thread.sleep(SHORT_DELAY_MS);
181	<	assertFalse(lock.isQueued(t1));
182	<	assertTrue(lock.isQueued(t2));
183	<	lock.unlock();
184	<	Thread.sleep(SHORT_DELAY_MS);
185	<	assertFalse(lock.isQueued(t1));
186	<	assertFalse(lock.isQueued(t2));
187	<	t1.join();
188	<	t2.join();
189	<	} catch(Exception e){
190	<	unexpectedException();
191	<	}
192	<	}
164	>	public void testIsQueued() throws InterruptedException {
165	>	final Mutex sync = new Mutex();
166	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
167	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
168	>	assertFalse(sync.isQueued(t1));
169	>	assertFalse(sync.isQueued(t2));
170	>	sync.acquire(1);
171	>	t1.start();
172	>	Thread.sleep(SHORT_DELAY_MS);
173	>	assertTrue(sync.isQueued(t1));
174	>	t2.start();
175	>	Thread.sleep(SHORT_DELAY_MS);
176	>	assertTrue(sync.isQueued(t1));
177	>	assertTrue(sync.isQueued(t2));
178	>	t1.interrupt();
179	>	Thread.sleep(SHORT_DELAY_MS);
180	>	assertFalse(sync.isQueued(t1));
181	>	assertTrue(sync.isQueued(t2));
182	>	sync.release(1);
183	>	Thread.sleep(SHORT_DELAY_MS);
184	>	assertFalse(sync.isQueued(t1));
185	>	Thread.sleep(SHORT_DELAY_MS);
186	>	assertFalse(sync.isQueued(t2));
187	>	t1.join();
188	>	t2.join();
189	>	}
190	>
191	>	/**
192	>	* getFirstQueuedThread returns first waiting thread or null if none
193	>	*/
194	>	public void testGetFirstQueuedThread() throws InterruptedException {
195	>	final Mutex sync = new Mutex();
196	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
197	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
198	>	assertNull(sync.getFirstQueuedThread());
199	>	sync.acquire(1);
200	>	t1.start();
201	>	Thread.sleep(SHORT_DELAY_MS);
202	>	assertEquals(t1, sync.getFirstQueuedThread());
203	>	t2.start();
204	>	Thread.sleep(SHORT_DELAY_MS);
205	>	assertEquals(t1, sync.getFirstQueuedThread());
206	>	t1.interrupt();
207	>	Thread.sleep(SHORT_DELAY_MS);
208	>	Thread.sleep(SHORT_DELAY_MS);
209	>	assertEquals(t2, sync.getFirstQueuedThread());
210	>	sync.release(1);
211	>	Thread.sleep(SHORT_DELAY_MS);
212	>	assertNull(sync.getFirstQueuedThread());
213	>	t1.join();
214	>	t2.join();
215	>	}
216
217
218		/**
219	<	* hasContended reports whether there has been contention
219	>	* hasContended reports false if no thread has ever blocked, else true
220		*/
221	<	public void testhasContended() {
222	<	final Mutex lock = new Mutex();
223	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
224	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
225	<	try {
226	<	assertFalse(lock.hasContended());
227	<	lock.lock();
228	<	t1.start();
229	<	Thread.sleep(SHORT_DELAY_MS);
230	<	assertTrue(lock.hasContended());
231	<	t2.start();
232	<	Thread.sleep(SHORT_DELAY_MS);
233	<	assertTrue(lock.hasContended());
234	<	t1.interrupt();
235	<	Thread.sleep(SHORT_DELAY_MS);
236	<	assertTrue(lock.hasContended());
237	<	lock.unlock();
238	<	Thread.sleep(SHORT_DELAY_MS);
239	<	assertTrue(lock.hasContended());
240	<	t1.join();
241	<	t2.join();
242	<	} catch(Exception e){
243	<	unexpectedException();
244	<	}
245	<	}
221	>	public void testHasContended() throws InterruptedException {
222	>	final Mutex sync = new Mutex();
223	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
224	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
225	>	assertFalse(sync.hasContended());
226	>	sync.acquire(1);
227	>	t1.start();
228	>	Thread.sleep(SHORT_DELAY_MS);
229	>	assertTrue(sync.hasContended());
230	>	t2.start();
231	>	Thread.sleep(SHORT_DELAY_MS);
232	>	assertTrue(sync.hasContended());
233	>	t1.interrupt();
234	>	Thread.sleep(SHORT_DELAY_MS);
235	>	assertTrue(sync.hasContended());
236	>	sync.release(1);
237	>	Thread.sleep(SHORT_DELAY_MS);
238	>	assertTrue(sync.hasContended());
239	>	t1.join();
240	>	t2.join();
241	>	}
242	>
243	>	/**
244	>	* getQueuedThreads includes waiting threads
245	>	*/
246	>	public void testGetQueuedThreads() throws InterruptedException {
247	>	final Mutex sync = new Mutex();
248	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
249	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
250	>	assertTrue(sync.getQueuedThreads().isEmpty());
251	>	sync.acquire(1);
252	>	assertTrue(sync.getQueuedThreads().isEmpty());
253	>	t1.start();
254	>	Thread.sleep(SHORT_DELAY_MS);
255	>	assertTrue(sync.getQueuedThreads().contains(t1));
256	>	t2.start();
257	>	Thread.sleep(SHORT_DELAY_MS);
258	>	assertTrue(sync.getQueuedThreads().contains(t1));
259	>	assertTrue(sync.getQueuedThreads().contains(t2));
260	>	t1.interrupt();
261	>	Thread.sleep(SHORT_DELAY_MS);
262	>	assertFalse(sync.getQueuedThreads().contains(t1));
263	>	assertTrue(sync.getQueuedThreads().contains(t2));
264	>	sync.release(1);
265	>	Thread.sleep(SHORT_DELAY_MS);
266	>	assertTrue(sync.getQueuedThreads().isEmpty());
267	>	t1.join();
268	>	t2.join();
269	>	}
270
271		/**
272	<	* timed tryLock is interruptible.
272	>	* getExclusiveQueuedThreads includes waiting threads
273		*/
274	<	public void testInterruptedException2() {
275	<	final Mutex lock = new Mutex();
276	<	lock.lock();
274	>	public void testGetExclusiveQueuedThreads() throws InterruptedException {
275	>	final Mutex sync = new Mutex();
276	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
277	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
278	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
279	>	sync.acquire(1);
280	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
281	>	t1.start();
282	>	Thread.sleep(SHORT_DELAY_MS);
283	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
284	>	t2.start();
285	>	Thread.sleep(SHORT_DELAY_MS);
286	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
287	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
288	>	t1.interrupt();
289	>	Thread.sleep(SHORT_DELAY_MS);
290	>	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
291	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
292	>	sync.release(1);
293	>	Thread.sleep(SHORT_DELAY_MS);
294	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
295	>	t1.join();
296	>	t2.join();
297	>	}
298	>
299	>	/**
300	>	* getSharedQueuedThreads does not include exclusively waiting threads
301	>	*/
302	>	public void testGetSharedQueuedThreads() throws InterruptedException {
303	>	final Mutex sync = new Mutex();
304	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
305	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
306	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
307	>	sync.acquire(1);
308	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
309	>	t1.start();
310	>	Thread.sleep(SHORT_DELAY_MS);
311	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
312	>	t2.start();
313	>	Thread.sleep(SHORT_DELAY_MS);
314	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
315	>	t1.interrupt();
316	>	Thread.sleep(SHORT_DELAY_MS);
317	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
318	>	sync.release(1);
319	>	Thread.sleep(SHORT_DELAY_MS);
320	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
321	>	t1.join();
322	>	t2.join();
323	>	}
324	>
325	>	/**
326	>	* tryAcquireNanos is interruptible.
327	>	*/
328	>	public void testInterruptedException2() throws InterruptedException {
329	>	final Mutex sync = new Mutex();
330	>	sync.acquire(1);
331		Thread t = new Thread(new Runnable() {
332		public void run() {
333		try {
334	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
334	>	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
335		threadShouldThrow();
336	<	} catch(InterruptedException success){}
336	>	} catch (InterruptedException success) {}
337		}
338		});
339	<	try {
340	<	t.start();
341	<	t.interrupt();
342	<	} catch(Exception e){
250	<	unexpectedException();
251	<	}
339	>
340	>	t.start();
341	>	t.interrupt();
342	>	t.join();
343		}
344
345
346		/**
347	<	* TryLock on a locked lock fails
347	>	* TryAcquire on exclusively held sync fails
348		*/
349	<	public void testTryLockWhenLocked() {
350	<	final Mutex lock = new Mutex();
351	<	lock.lock();
349	>	public void testTryAcquireWhenSynced() throws InterruptedException {
350	>	final Mutex sync = new Mutex();
351	>	sync.acquire(1);
352		Thread t = new Thread(new Runnable() {
353		public void run() {
354	<	threadAssertFalse(lock.tryLock());
354	>	threadAssertFalse(sync.tryAcquire(1));
355		}
356		});
357	<	try {
358	<	t.start();
359	<	t.join();
360	<	lock.unlock();
361	<	} catch(Exception e){
271	<	unexpectedException();
272	<	}
273	<	}
357	>
358	>	t.start();
359	>	t.join();
360	>	sync.release(1);
361	>	}
362
363		/**
364	<	* Timed tryLock on a locked lock times out
364	>	* tryAcquireNanos on an exclusively held sync times out
365		*/
366	<	public void testTryLock_Timeout() {
367	<	final Mutex lock = new Mutex();
368	<	lock.lock();
366	>	public void testAcquireNanos_Timeout() throws InterruptedException {
367	>	final Mutex sync = new Mutex();
368	>	sync.acquire(1);
369		Thread t = new Thread(new Runnable() {
370		public void run() {
371		try {
372	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
372	>	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
373		} catch (Exception ex) {
374		threadUnexpectedException();
375		}
376		}
377		});
378	<	try {
379	<	t.start();
380	<	t.join();
381	<	lock.unlock();
382	<	} catch(Exception e){
383	<	unexpectedException();
384	<	}
385	<	}
386	<
387	<
388	<	/**
389	<	* isLocked is true when locked and false when not
390	<	*/
391	<	public void testIsLocked() {
392	<	final Mutex lock = new Mutex();
393	<	lock.lock();
394	<	assertTrue(lock.isLocked());
307	<	lock.unlock();
308	<	assertFalse(lock.isLocked());
309	<	Thread t = new Thread(new Runnable() {
378	>
379	>	t.start();
380	>	t.join();
381	>	sync.release(1);
382	>	}
383	>
384	>
385	>	/**
386	>	* getState is true when acquired and false when not
387	>	*/
388	>	public void testGetState() throws InterruptedException {
389	>	final Mutex sync = new Mutex();
390	>	sync.acquire(1);
391	>	assertTrue(sync.isHeldExclusively());
392	>	sync.release(1);
393	>	assertFalse(sync.isHeldExclusively());
394	>	Thread t = new Thread(new Runnable() {
395		public void run() {
396	<	lock.lock();
396	>	sync.acquire(1);
397		try {
398		Thread.sleep(SMALL_DELAY_MS);
399		}
400	<	catch(Exception e) {
400	>	catch (Exception e) {
401		threadUnexpectedException();
402		}
403	<	lock.unlock();
403	>	sync.release(1);
404		}
405		});
406	<	try {
407	<	t.start();
408	<	Thread.sleep(SHORT_DELAY_MS);
409	<	assertTrue(lock.isLocked());
410	<	t.join();
411	<	assertFalse(lock.isLocked());
327	<	} catch(Exception e){
328	<	unexpectedException();
329	<	}
406	>
407	>	t.start();
408	>	Thread.sleep(SHORT_DELAY_MS);
409	>	assertTrue(sync.isHeldExclusively());
410	>	t.join();
411	>	assertFalse(sync.isHeldExclusively());
412		}
413
414
415		/**
416	<	* lockInterruptibly is interruptible.
416	>	* acquireInterruptibly is interruptible.
417		*/
418	<	public void testLockInterruptibly1() {
419	<	final Mutex lock = new Mutex();
420	<	lock.lock();
421	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
422	<	try {
423	<	t.start();
424	<	t.interrupt();
425	<	lock.unlock();
426	<	t.join();
427	<	} catch(Exception e){
428	<	unexpectedException();
429	<	}
348	<	}
418	>	public void testAcquireInterruptibly1() throws InterruptedException {
419	>	final Mutex sync = new Mutex();
420	>	sync.acquire(1);
421	>	Thread t = new Thread(new InterruptedSyncRunnable(sync));
422	>
423	>	t.start();
424	>	Thread.sleep(SHORT_DELAY_MS);
425	>	t.interrupt();
426	>	Thread.sleep(SHORT_DELAY_MS);
427	>	sync.release(1);
428	>	t.join();
429	>	}
430
431		/**
432	<	* lockInterruptibly succeeds when unlocked, else is interruptible
432	>	* acquireInterruptibly succeeds when released, else is interruptible
433		*/
434	<	public void testLockInterruptibly2() {
435	<	final Mutex lock = new Mutex();
436	<	try {
437	<	lock.lockInterruptibly();
438	<	} catch(Exception e) {
439	<	unexpectedException();
440	<	}
441	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
361	<	try {
362	<	t.start();
363	<	t.interrupt();
364	<	assertTrue(lock.isLocked());
365	<	t.join();
366	<	} catch(Exception e){
367	<	unexpectedException();
368	<	}
434	>	public void testAcquireInterruptibly2() throws InterruptedException {
435	>	final Mutex sync = new Mutex();
436	>	sync.acquireInterruptibly(1);
437	>	Thread t = new Thread(new InterruptedSyncRunnable(sync));
438	>	t.start();
439	>	t.interrupt();
440	>	assertTrue(sync.isHeldExclusively());
441	>	t.join();
442		}
443
444		/**
445	<	* Calling await without holding lock throws IllegalMonitorStateException
445	>	* owns is true for a condition created by sync else false
446		*/
447	<	public void testAwait_IllegalMonitor() {
448	<	final Mutex lock = new Mutex();
449	<	final Condition c = lock.newCondition();
447	>	public void testOwns() {
448	>	final Mutex sync = new Mutex();
449	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
450	>	final Mutex sync2 = new Mutex();
451	>	assertTrue(sync.owns(c));
452	>	assertFalse(sync2.owns(c));
453	>	}
454	>
455	>	/**
456	>	* Calling await without holding sync throws IllegalMonitorStateException
457	>	*/
458	>	public void testAwait_IllegalMonitor() throws InterruptedException {
459	>	final Mutex sync = new Mutex();
460	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
461		try {
462		c.await();
463		shouldThrow();
464		}
465	<	catch (IllegalMonitorStateException success) {
382	<	}
383	<	catch (Exception ex) {
384	<	unexpectedException();
385	<	}
465	>	catch (IllegalMonitorStateException success) {}
466		}
467
468		/**
469	<	* Calling signal without holding lock throws IllegalMonitorStateException
469	>	* Calling signal without holding sync throws IllegalMonitorStateException
470		*/
471		public void testSignal_IllegalMonitor() {
472	<	final Mutex lock = new Mutex();
473	<	final Condition c = lock.newCondition();
472	>	final Mutex sync = new Mutex();
473	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
474		try {
475		c.signal();
476		shouldThrow();
477		}
478	<	catch (IllegalMonitorStateException success) {
399	<	}
400	<	catch (Exception ex) {
401	<	unexpectedException();
402	<	}
478	>	catch (IllegalMonitorStateException success) {}
479		}
480
481		/**
482		* awaitNanos without a signal times out
483		*/
484	<	public void testAwaitNanos_Timeout() {
485	<	final Mutex lock = new Mutex();
486	<	final Condition c = lock.newCondition();
487	<	try {
488	<	lock.lock();
489	<	long t = c.awaitNanos(100);
490	<	assertTrue(t <= 0);
415	<	lock.unlock();
416	<	}
417	<	catch (Exception ex) {
418	<	unexpectedException();
419	<	}
484	>	public void testAwaitNanos_Timeout() throws InterruptedException {
485	>	final Mutex sync = new Mutex();
486	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
487	>	sync.acquire(1);
488	>	long t = c.awaitNanos(100);
489	>	assertTrue(t <= 0);
490	>	sync.release(1);
491		}
492
493		/**
494	<	*  timed await without a signal times out
494	>	*  Timed await without a signal times out
495		*/
496	<	public void testAwait_Timeout() {
497	<	final Mutex lock = new Mutex();
498	<	final Condition c = lock.newCondition();
499	<	try {
500	<	lock.lock();
501	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
431	<	lock.unlock();
432	<	}
433	<	catch (Exception ex) {
434	<	unexpectedException();
435	<	}
496	>	public void testAwait_Timeout() throws InterruptedException {
497	>	final Mutex sync = new Mutex();
498	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
499	>	sync.acquire(1);
500	>	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
501	>	sync.release(1);
502		}
503
504		/**
505		* awaitUntil without a signal times out
506		*/
507	<	public void testAwaitUntil_Timeout() {
508	<	final Mutex lock = new Mutex();
509	<	final Condition c = lock.newCondition();
510	<	try {
511	<	lock.lock();
512	<	java.util.Date d = new java.util.Date();
513	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
448	<	lock.unlock();
449	<	}
450	<	catch (Exception ex) {
451	<	unexpectedException();
452	<	}
507	>	public void testAwaitUntil_Timeout() throws InterruptedException {
508	>	final Mutex sync = new Mutex();
509	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
510	>	sync.acquire(1);
511	>	java.util.Date d = new java.util.Date();
512	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
513	>	sync.release(1);
514		}
515
516		/**
517		* await returns when signalled
518		*/
519	<	public void testAwait() {
520	<	final Mutex lock = new Mutex();
521	<	final Condition c = lock.newCondition();
522	<	Thread t = new Thread(new Runnable() {
519	>	public void testAwait() throws InterruptedException {
520	>	final Mutex sync = new Mutex();
521	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
522	>	Thread t = new Thread(new Runnable() {
523		public void run() {
524		try {
525	<	lock.lock();
525	>	sync.acquire(1);
526		c.await();
527	<	lock.unlock();
527	>	sync.release(1);
528		}
529	<	catch(InterruptedException e) {
529	>	catch (InterruptedException e) {
530		threadUnexpectedException();
531		}
532		}
533		});
534
535	+	t.start();
536	+	Thread.sleep(SHORT_DELAY_MS);
537	+	sync.acquire(1);
538	+	c.signal();
539	+	sync.release(1);
540	+	t.join(SHORT_DELAY_MS);
541	+	assertFalse(t.isAlive());
542	+	}
543	+
544	+
545	+
546	+	/**
547	+	* hasWaiters throws NPE if null
548	+	*/
549	+	public void testHasWaitersNPE() {
550	+	final Mutex sync = new Mutex();
551	+	try {
552	+	sync.hasWaiters(null);
553	+	shouldThrow();
554	+	} catch (NullPointerException success) {}
555	+	}
556	+
557	+	/**
558	+	* getWaitQueueLength throws NPE if null
559	+	*/
560	+	public void testGetWaitQueueLengthNPE() {
561	+	final Mutex sync = new Mutex();
562		try {
563	<	t.start();
564	<	Thread.sleep(SHORT_DELAY_MS);
565	<	lock.lock();
566	<	c.signal();
567	<	lock.unlock();
568	<	t.join(SHORT_DELAY_MS);
569	<	assertFalse(t.isAlive());
570	<	}
571	<	catch (Exception ex) {
572	<	unexpectedException();
573	<	}
563	>	sync.getWaitQueueLength(null);
564	>	shouldThrow();
565	>	} catch (NullPointerException success) {}
566	>	}
567	>
568	>
569	>	/**
570	>	* getWaitingThreads throws NPE if null
571	>	*/
572	>	public void testGetWaitingThreadsNPE() {
573	>	final Mutex sync = new Mutex();
574	>	try {
575	>	sync.getWaitingThreads(null);
576	>	shouldThrow();
577	>	} catch (NullPointerException success) {}
578	>	}
579	>
580	>
581	>	/**
582	>	* hasWaiters throws IAE if not owned
583	>	*/
584	>	public void testHasWaitersIAE() {
585	>	final Mutex sync = new Mutex();
586	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
587	>	final Mutex sync2 = new Mutex();
588	>	try {
589	>	sync2.hasWaiters(c);
590	>	shouldThrow();
591	>	} catch (IllegalArgumentException success) {}
592	>	}
593	>
594	>	/**
595	>	* hasWaiters throws IMSE if not synced
596	>	*/
597	>	public void testHasWaitersIMSE() {
598	>	final Mutex sync = new Mutex();
599	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
600	>	try {
601	>	sync.hasWaiters(c);
602	>	shouldThrow();
603	>	} catch (IllegalMonitorStateException success) {}
604	>	}
605	>
606	>
607	>	/**
608	>	* getWaitQueueLength throws IAE if not owned
609	>	*/
610	>	public void testGetWaitQueueLengthIAE() {
611	>	final Mutex sync = new Mutex();
612	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
613	>	final Mutex sync2 = new Mutex();
614	>	try {
615	>	sync2.getWaitQueueLength(c);
616	>	shouldThrow();
617	>	} catch (IllegalArgumentException success) {}
618	>	}
619	>
620	>	/**
621	>	* getWaitQueueLength throws IMSE if not synced
622	>	*/
623	>	public void testGetWaitQueueLengthIMSE() {
624	>	final Mutex sync = new Mutex();
625	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
626	>	try {
627	>	sync.getWaitQueueLength(c);
628	>	shouldThrow();
629	>	} catch (IllegalMonitorStateException success) {}
630		}
631	<
631	>
632	>
633	>	/**
634	>	* getWaitingThreads throws IAE if not owned
635	>	*/
636	>	public void testGetWaitingThreadsIAE() {
637	>	final Mutex sync = new Mutex();
638	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
639	>	final Mutex sync2 = new Mutex();
640	>	try {
641	>	sync2.getWaitingThreads(c);
642	>	shouldThrow();
643	>	} catch (IllegalArgumentException success) {}
644	>	}
645	>
646	>	/**
647	>	* getWaitingThreads throws IMSE if not synced
648	>	*/
649	>	public void testGetWaitingThreadsIMSE() {
650	>	final Mutex sync = new Mutex();
651	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
652	>	try {
653	>	sync.getWaitingThreads(c);
654	>	shouldThrow();
655	>	} catch (IllegalMonitorStateException success) {}
656	>	}
657	>
658	>
659	>
660	>	/**
661	>	* hasWaiters returns true when a thread is waiting, else false
662	>	*/
663	>	public void testHasWaiters() throws InterruptedException {
664	>	final Mutex sync = new Mutex();
665	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
666	>	Thread t = new Thread(new Runnable() {
667	>	public void run() {
668	>	try {
669	>	sync.acquire(1);
670	>	threadAssertFalse(sync.hasWaiters(c));
671	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
672	>	c.await();
673	>	sync.release(1);
674	>	}
675	>	catch (InterruptedException e) {
676	>	threadUnexpectedException();
677	>	}
678	>	}
679	>	});
680	>
681	>	t.start();
682	>	Thread.sleep(SHORT_DELAY_MS);
683	>	sync.acquire(1);
684	>	assertTrue(sync.hasWaiters(c));
685	>	assertEquals(1, sync.getWaitQueueLength(c));
686	>	c.signal();
687	>	sync.release(1);
688	>	Thread.sleep(SHORT_DELAY_MS);
689	>	sync.acquire(1);
690	>	assertFalse(sync.hasWaiters(c));
691	>	assertEquals(0, sync.getWaitQueueLength(c));
692	>	sync.release(1);
693	>	t.join(SHORT_DELAY_MS);
694	>	assertFalse(t.isAlive());
695	>	}
696	>
697	>	/**
698	>	* getWaitQueueLength returns number of waiting threads
699	>	*/
700	>	public void testGetWaitQueueLength() throws InterruptedException {
701	>	final Mutex sync = new Mutex();
702	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
703	>	Thread t1 = new Thread(new Runnable() {
704	>	public void run() {
705	>	try {
706	>	sync.acquire(1);
707	>	threadAssertFalse(sync.hasWaiters(c));
708	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
709	>	c.await();
710	>	sync.release(1);
711	>	}
712	>	catch (InterruptedException e) {
713	>	threadUnexpectedException();
714	>	}
715	>	}
716	>	});
717	>
718	>	Thread t2 = new Thread(new Runnable() {
719	>	public void run() {
720	>	try {
721	>	sync.acquire(1);
722	>	threadAssertTrue(sync.hasWaiters(c));
723	>	threadAssertEquals(1, sync.getWaitQueueLength(c));
724	>	c.await();
725	>	sync.release(1);
726	>	}
727	>	catch (InterruptedException e) {
728	>	threadUnexpectedException();
729	>	}
730	>	}
731	>	});
732	>
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	>	assertEquals(2, sync.getWaitQueueLength(c));
740	>	c.signalAll();
741	>	sync.release(1);
742	>	Thread.sleep(SHORT_DELAY_MS);
743	>	sync.acquire(1);
744	>	assertFalse(sync.hasWaiters(c));
745	>	assertEquals(0, sync.getWaitQueueLength(c));
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	>	* getWaitingThreads returns only and all waiting threads
755	>	*/
756	>	public void testGetWaitingThreads() throws InterruptedException {
757	>	final Mutex sync = new Mutex();
758	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
759	>	Thread t1 = new Thread(new Runnable() {
760	>	public void run() {
761	>	try {
762	>	sync.acquire(1);
763	>	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
764	>	c.await();
765	>	sync.release(1);
766	>	}
767	>	catch (InterruptedException e) {
768	>	threadUnexpectedException();
769	>	}
770	>	}
771	>	});
772	>
773	>	Thread t2 = new Thread(new Runnable() {
774	>	public void run() {
775	>	try {
776	>	sync.acquire(1);
777	>	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
778	>	c.await();
779	>	sync.release(1);
780	>	}
781	>	catch (InterruptedException e) {
782	>	threadUnexpectedException();
783	>	}
784	>	}
785	>	});
786	>
787	>	sync.acquire(1);
788	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
789	>	sync.release(1);
790	>	t1.start();
791	>	Thread.sleep(SHORT_DELAY_MS);
792	>	t2.start();
793	>	Thread.sleep(SHORT_DELAY_MS);
794	>	sync.acquire(1);
795	>	assertTrue(sync.hasWaiters(c));
796	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
797	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
798	>	c.signalAll();
799	>	sync.release(1);
800	>	Thread.sleep(SHORT_DELAY_MS);
801	>	sync.acquire(1);
802	>	assertFalse(sync.hasWaiters(c));
803	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
804	>	sync.release(1);
805	>	t1.join(SHORT_DELAY_MS);
806	>	t2.join(SHORT_DELAY_MS);
807	>	assertFalse(t1.isAlive());
808	>	assertFalse(t2.isAlive());
809	>	}
810	>
811	>
812	>
813	>	/**
814	>	* awaitUninterruptibly doesn't abort on interrupt
815	>	*/
816	>	public void testAwaitUninterruptibly() throws InterruptedException {
817	>	final Mutex sync = new Mutex();
818	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
819	>	Thread t = new Thread(new Runnable() {
820	>	public void run() {
821	>	sync.acquire(1);
822	>	c.awaitUninterruptibly();
823	>	sync.release(1);
824	>	}
825	>	});
826	>
827	>	t.start();
828	>	Thread.sleep(SHORT_DELAY_MS);
829	>	t.interrupt();
830	>	sync.acquire(1);
831	>	c.signal();
832	>	sync.release(1);
833	>	t.join(SHORT_DELAY_MS);
834	>	assertFalse(t.isAlive());
835	>	}
836	>
837	>	/**
838	>	* await is interruptible
839	>	*/
840	>	public void testAwait_Interrupt() throws InterruptedException {
841	>	final Mutex sync = new Mutex();
842	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
843	>	Thread t = new Thread(new Runnable() {
844	>	public void run() {
845	>	try {
846	>	sync.acquire(1);
847	>	c.await();
848	>	sync.release(1);
849	>	threadShouldThrow();
850	>	}
851	>	catch (InterruptedException success) {
852	>	}
853	>	}
854	>	});
855	>
856	>	t.start();
857	>	Thread.sleep(SHORT_DELAY_MS);
858	>	t.interrupt();
859	>	t.join(SHORT_DELAY_MS);
860	>	assertFalse(t.isAlive());
861	>	}
862	>
863	>	/**
864	>	* awaitNanos is interruptible
865	>	*/
866	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
867	>	final Mutex sync = new Mutex();
868	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
869	>	Thread t = new Thread(new Runnable() {
870	>	public void run() {
871	>	try {
872	>	sync.acquire(1);
873	>	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
874	>	sync.release(1);
875	>	threadShouldThrow();
876	>	}
877	>	catch (InterruptedException success) {
878	>	}
879	>	}
880	>	});
881	>
882	>	t.start();
883	>	Thread.sleep(SHORT_DELAY_MS);
884	>	t.interrupt();
885	>	t.join(SHORT_DELAY_MS);
886	>	assertFalse(t.isAlive());
887	>	}
888	>
889	>	/**
890	>	* awaitUntil is interruptible
891	>	*/
892	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
893	>	final Mutex sync = new Mutex();
894	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
895	>	Thread t = new Thread(new Runnable() {
896	>	public void run() {
897	>	try {
898	>	sync.acquire(1);
899	>	java.util.Date d = new java.util.Date();
900	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
901	>	sync.release(1);
902	>	threadShouldThrow();
903	>	}
904	>	catch (InterruptedException success) {
905	>	}
906	>	}
907	>	});
908	>
909	>	t.start();
910	>	Thread.sleep(SHORT_DELAY_MS);
911	>	t.interrupt();
912	>	t.join(SHORT_DELAY_MS);
913	>	assertFalse(t.isAlive());
914	>	}
915	>
916	>	/**
917	>	* signalAll wakes up all threads
918	>	*/
919	>	public void testSignalAll() throws InterruptedException {
920	>	final Mutex sync = new Mutex();
921	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
922	>	Thread t1 = new Thread(new Runnable() {
923	>	public void run() {
924	>	try {
925	>	sync.acquire(1);
926	>	c.await();
927	>	sync.release(1);
928	>	}
929	>	catch (InterruptedException e) {
930	>	threadUnexpectedException();
931	>	}
932	>	}
933	>	});
934	>
935	>	Thread t2 = new Thread(new Runnable() {
936	>	public void run() {
937	>	try {
938	>	sync.acquire(1);
939	>	c.await();
940	>	sync.release(1);
941	>	}
942	>	catch (InterruptedException e) {
943	>	threadUnexpectedException();
944	>	}
945	>	}
946	>	});
947	>
948	>	t1.start();
949	>	t2.start();
950	>	Thread.sleep(SHORT_DELAY_MS);
951	>	sync.acquire(1);
952	>	c.signalAll();
953	>	sync.release(1);
954	>	t1.join(SHORT_DELAY_MS);
955	>	t2.join(SHORT_DELAY_MS);
956	>	assertFalse(t1.isAlive());
957	>	assertFalse(t2.isAlive());
958	>	}
959	>
960	>
961	>	/**
962	>	* toString indicates current state
963	>	*/
964	>	public void testToString() {
965	>	Mutex sync = new Mutex();
966	>	String us = sync.toString();
967	>	assertTrue(us.indexOf("State = 0") >= 0);
968	>	sync.acquire(1);
969	>	String ls = sync.toString();
970	>	assertTrue(ls.indexOf("State = 1") >= 0);
971	>	}
972	>
973	>	/**
974	>	* A serialized AQS deserializes with current state
975	>	*/
976	>	public void testSerialization() throws Exception {
977	>	Mutex l = new Mutex();
978	>	l.acquire(1);
979	>	assertTrue(l.isHeldExclusively());
980	>
981	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
982	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
983	>	out.writeObject(l);
984	>	out.close();
985	>
986	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
987	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
988	>	Mutex r = (Mutex) in.readObject();
989	>	assertTrue(r.isHeldExclusively());
990	>	}
991	>
992	>
993	>	/**
994	>	* tryReleaseShared setting state changes getState
995	>	*/
996	>	public void testGetStateWithReleaseShared() {
997	>	final BooleanLatch l = new BooleanLatch();
998	>	assertFalse(l.isSignalled());
999	>	l.releaseShared(0);
1000	>	assertTrue(l.isSignalled());
1001	>	}
1002	>
1003	>	/**
1004	>	* releaseShared has no effect when already signalled
1005	>	*/
1006	>	public void testReleaseShared() {
1007	>	final BooleanLatch l = new BooleanLatch();
1008	>	assertFalse(l.isSignalled());
1009	>	l.releaseShared(0);
1010	>	assertTrue(l.isSignalled());
1011	>	l.releaseShared(0);
1012	>	assertTrue(l.isSignalled());
1013	>	}
1014	>
1015	>	/**
1016	>	* acquireSharedInterruptibly returns after release, but not before
1017	>	*/
1018	>	public void testAcquireSharedInterruptibly() throws InterruptedException {
1019	>	final BooleanLatch l = new BooleanLatch();
1020	>
1021	>	Thread t = new Thread(new Runnable() {
1022	>	public void run() {
1023	>	try {
1024	>	threadAssertFalse(l.isSignalled());
1025	>	l.acquireSharedInterruptibly(0);
1026	>	threadAssertTrue(l.isSignalled());
1027	>	} catch (InterruptedException e) {
1028	>	threadUnexpectedException();
1029	>	}
1030	>	}
1031	>	});
1032	>
1033	>	t.start();
1034	>	assertFalse(l.isSignalled());
1035	>	Thread.sleep(SHORT_DELAY_MS);
1036	>	l.releaseShared(0);
1037	>	assertTrue(l.isSignalled());
1038	>	t.join();
1039	>	}
1040	>
1041	>
1042	>	/**
1043	>	* acquireSharedTimed returns after release
1044	>	*/
1045	>	public void testAsquireSharedTimed() throws InterruptedException {
1046	>	final BooleanLatch l = new BooleanLatch();
1047	>
1048	>	Thread t = new Thread(new Runnable() {
1049	>	public void run() {
1050	>	try {
1051	>	threadAssertFalse(l.isSignalled());
1052	>	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1053	>	threadAssertTrue(l.isSignalled());
1054	>
1055	>	} catch (InterruptedException e) {
1056	>	threadUnexpectedException();
1057	>	}
1058	>	}
1059	>	});
1060	>
1061	>	t.start();
1062	>	assertFalse(l.isSignalled());
1063	>	Thread.sleep(SHORT_DELAY_MS);
1064	>	l.releaseShared(0);
1065	>	assertTrue(l.isSignalled());
1066	>	t.join();
1067	>	}
1068	>
1069	>	/**
1070	>	* acquireSharedInterruptibly throws IE if interrupted before released
1071	>	*/
1072	>	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
1073	>	final BooleanLatch l = new BooleanLatch();
1074	>	Thread t = new Thread(new Runnable() {
1075	>	public void run() {
1076	>	try {
1077	>	threadAssertFalse(l.isSignalled());
1078	>	l.acquireSharedInterruptibly(0);
1079	>	threadShouldThrow();
1080	>	} catch (InterruptedException success) {}
1081	>	}
1082	>	});
1083	>	t.start();
1084	>	assertFalse(l.isSignalled());
1085	>	t.interrupt();
1086	>	t.join();
1087	>	}
1088	>
1089	>	/**
1090	>	* acquireSharedTimed throws IE if interrupted before released
1091	>	*/
1092	>	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
1093	>	final BooleanLatch l = new BooleanLatch();
1094	>	Thread t = new Thread(new Runnable() {
1095	>	public void run() {
1096	>	try {
1097	>	threadAssertFalse(l.isSignalled());
1098	>	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1099	>	threadShouldThrow();
1100	>	} catch (InterruptedException success) {}
1101	>	}
1102	>	});
1103	>	t.start();
1104	>	Thread.sleep(SHORT_DELAY_MS);
1105	>	assertFalse(l.isSignalled());
1106	>	t.interrupt();
1107	>	t.join();
1108	>	}
1109	>
1110	>	/**
1111	>	* acquireSharedTimed times out if not released before timeout
1112	>	*/
1113	>	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1114	>	final BooleanLatch l = new BooleanLatch();
1115	>	Thread t = new Thread(new Runnable() {
1116	>	public void run() {
1117	>	try {
1118	>	threadAssertFalse(l.isSignalled());
1119	>	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1120	>	} catch (InterruptedException ie) {
1121	>	threadUnexpectedException();
1122	>	}
1123	>	}
1124	>	});
1125	>	t.start();
1126	>	Thread.sleep(SHORT_DELAY_MS);
1127	>	assertFalse(l.isSignalled());
1128	>	t.join();
1129	>	}
1130	>
1131	>
1132		}

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