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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.6 by dl, Wed Dec 31 21:30:08 2003 UTC vs.
Revision 1.32 by jsr166, Mon Nov 30 08:31:09 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	<	boolean isLocked() { return getState() == 1; }
35	<
36	<	public boolean tryAcquireExclusiveState(boolean isQueued, int acquires) {
37	<	assert acquires == 1; // Does not use multiple acquires
38	<	return compareAndSetState(0, 1);
38	<	}
39	<
40	<	public boolean releaseExclusiveState(int releases) {
41	<	setState(0);
42	<	return true;
43	<	}
44	<
45	<	public void checkConditionAccess(Thread thread, boolean waiting) {
46	<	if (getState() == 0) throw new IllegalMonitorStateException();
47	<	}
48	<
49	<	Condition newCondition() { return new ConditionObject(); }
50	<
51	<	private void readObject(ObjectInputStream s) throws IOException, ClassNotFoundException {
52	<	s.defaultReadObject();
53	<	setState(0); // reset to unlocked state
54	<	}
55	<	}
56	<
57	<	private final Sync sync = new Sync();
58	<	public boolean tryLock() {
59	<	return sync.tryAcquireExclusiveState(false, 1);
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	<	public void lock() {
41	<	sync.acquireExclusiveUninterruptibly(1);
40	>
41	>	public boolean tryRelease(int releases) {
42	>	if (getState() == 0) throw new IllegalMonitorStateException();
43	>	setState(0);
44	>	return true;
45		}
46	<	public void 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		}
70	–	public void unlock() { sync.releaseExclusive(1); }
71	–	public Condition newCondition() { return sync.newCondition(); }
72	–	public boolean isLocked() { return sync.isLocked(); }
73	–	public boolean hasQueuedThreads() { return sync.hasQueuedThreads(); }
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();
85	<	} 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 {
99	<	lock.lockInterruptibly();
100	<	threadShouldThrow();
101	<	} 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();
111	<	assertTrue(rl.isLocked());
112	<	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();
149	<	} catch(Exception e){
150	<	unexpectedException();
151	<	}
152	<	}
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 {
163	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
164	<	threadShouldThrow();
165	<	} catch(InterruptedException success){}
166	<	}
167	<	});
168	<	try {
169	<	t.start();
170	<	t.interrupt();
171	<	} catch(Exception e){
172	<	unexpectedException();
173	<	}
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 * 1000L * 1000L);
331	+	}});
332	+
333	+	t.start();
334	+	Thread.sleep(SHORT_DELAY_MS);
335	+	t.interrupt();
336	+	t.join();
337	+	}
338	+
339	+
340	+	/**
341	+	* TryAcquire on exclusively held sync fails
342	+	*/
343	+	public void testTryAcquireWhenSynced() throws InterruptedException {
344	+	final Mutex sync = new Mutex();
345	+	sync.acquire(1);
346	+	Thread t = new Thread(new CheckedRunnable() {
347	+	public void realRun() {
348	+	threadAssertFalse(sync.tryAcquire(1));
349	+	}});
350	+
351	+	t.start();
352	+	t.join();
353	+	sync.release(1);
354	+	}
355	+
356	+	/**
357	+	* tryAcquireNanos on an exclusively held sync times out
358	+	*/
359	+	public void testAcquireNanos_Timeout() throws InterruptedException {
360	+	final Mutex sync = new Mutex();
361	+	sync.acquire(1);
362	+	Thread t = new Thread(new CheckedRunnable() {
363	+	public void realRun() throws InterruptedException {
364	+	threadAssertFalse(sync.tryAcquireNanos(1, SHORT_DELAY_MS * 1000L * 1000L));
365	+	}});
366	+
367	+	t.start();
368	+	t.join();
369	+	sync.release(1);
370	+	}
371	+
372	+
373	+	/**
374	+	* getState is true when acquired and false when not
375	+	*/
376	+	public void testGetState() throws InterruptedException {
377	+	final Mutex sync = new Mutex();
378	+	sync.acquire(1);
379	+	assertTrue(sync.isHeldExclusively());
380	+	sync.release(1);
381	+	assertFalse(sync.isHeldExclusively());
382	+	Thread t = new Thread(new CheckedRunnable() {
383	+	public void realRun() throws InterruptedException {
384	+	sync.acquire(1);
385	+	Thread.sleep(SMALL_DELAY_MS);
386	+	sync.release(1);
387	+	}});
388	+
389	+	t.start();
390	+	Thread.sleep(SHORT_DELAY_MS);
391	+	assertTrue(sync.isHeldExclusively());
392	+	t.join();
393	+	assertFalse(sync.isHeldExclusively());
394	+	}
395	+
396	+
397	+	/**
398	+	* acquireInterruptibly is interruptible.
399	+	*/
400	+	public void testAcquireInterruptibly1() throws InterruptedException {
401	+	final Mutex sync = new Mutex();
402	+	sync.acquire(1);
403	+	Thread t = new Thread(new InterruptedSyncRunnable(sync));
404	+
405	+	t.start();
406	+	Thread.sleep(SHORT_DELAY_MS);
407	+	t.interrupt();
408	+	Thread.sleep(SHORT_DELAY_MS);
409	+	sync.release(1);
410	+	t.join();
411	+	}
412	+
413	+	/**
414	+	* acquireInterruptibly succeeds when released, else is interruptible
415	+	*/
416	+	public void testAcquireInterruptibly2() throws InterruptedException {
417	+	final Mutex sync = new Mutex();
418	+	sync.acquireInterruptibly(1);
419	+	Thread t = new Thread(new InterruptedSyncRunnable(sync));
420	+	t.start();
421	+	Thread.sleep(SHORT_DELAY_MS);
422	+	t.interrupt();
423	+	assertTrue(sync.isHeldExclusively());
424	+	t.join();
425	+	}
426	+
427	+	/**
428	+	* owns is true for a condition created by sync else false
429	+	*/
430	+	public void testOwns() {
431	+	final Mutex sync = new Mutex();
432	+	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
433	+	final Mutex sync2 = new Mutex();
434	+	assertTrue(sync.owns(c));
435	+	assertFalse(sync2.owns(c));
436	+	}
437	+
438	+	/**
439	+	* Calling await without holding sync throws IllegalMonitorStateException
440	+	*/
441	+	public void testAwait_IllegalMonitor() throws InterruptedException {
442	+	final Mutex sync = new Mutex();
443	+	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
444	+	try {
445	+	c.await();
446	+	shouldThrow();
447	+	} catch (IllegalMonitorStateException success) {}
448	+	}
449
450		/**
451	<	* TryLock on a locked lock fails
451	>	* Calling signal without holding sync throws IllegalMonitorStateException
452		*/
453	<	public void testTryLockWhenLocked() {
454	<	final Mutex lock = new Mutex();
455	<	lock.lock();
456	<	Thread t = new Thread(new Runnable() {
457	<	public void run() {
458	<	threadAssertFalse(lock.tryLock());
459	<	}
460	<	});
188	<	try {
189	<	t.start();
190	<	t.join();
191	<	lock.unlock();
192	<	} catch(Exception e){
193	<	unexpectedException();
194	<	}
195	<	}
453	>	public void testSignal_IllegalMonitor() {
454	>	final Mutex sync = new Mutex();
455	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
456	>	try {
457	>	c.signal();
458	>	shouldThrow();
459	>	} catch (IllegalMonitorStateException success) {}
460	>	}
461
462		/**
463	<	* Timed tryLock on a locked lock times out
463	>	* awaitNanos without a signal times out
464		*/
465	<	public void testTryLock_Timeout() {
466	<	final Mutex lock = new Mutex();
467	<	lock.lock();
468	<	Thread t = new Thread(new Runnable() {
469	<	public void run() {
470	<	try {
471	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
207	<	} catch (Exception ex) {
208	<	threadUnexpectedException();
209	<	}
210	<	}
211	<	});
212	<	try {
213	<	t.start();
214	<	t.join();
215	<	lock.unlock();
216	<	} catch(Exception e){
217	<	unexpectedException();
218	<	}
219	<	}
220	<
221	<
222	<	/**
223	<	* isLocked is true when locked and false when not
224	<	*/
225	<	public void testIsLocked() {
226	<	final Mutex lock = new Mutex();
227	<	lock.lock();
228	<	assertTrue(lock.isLocked());
229	<	lock.unlock();
230	<	assertFalse(lock.isLocked());
231	<	Thread t = new Thread(new Runnable() {
232	<	public void run() {
233	<	lock.lock();
234	<	try {
235	<	Thread.sleep(SMALL_DELAY_MS);
236	<	}
237	<	catch(Exception e) {
238	<	threadUnexpectedException();
239	<	}
240	<	lock.unlock();
241	<	}
242	<	});
243	<	try {
244	<	t.start();
245	<	Thread.sleep(SHORT_DELAY_MS);
246	<	assertTrue(lock.isLocked());
247	<	t.join();
248	<	assertFalse(lock.isLocked());
249	<	} catch(Exception e){
250	<	unexpectedException();
251	<	}
465	>	public void testAwaitNanos_Timeout() throws InterruptedException {
466	>	final Mutex sync = new Mutex();
467	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
468	>	sync.acquire(1);
469	>	long t = c.awaitNanos(100);
470	>	assertTrue(t <= 0);
471	>	sync.release(1);
472		}
473
474	+	/**
475	+	*  Timed await without a signal times out
476	+	*/
477	+	public void testAwait_Timeout() throws InterruptedException {
478	+	final Mutex sync = new Mutex();
479	+	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
480	+	sync.acquire(1);
481	+	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
482	+	sync.release(1);
483	+	}
484
485		/**
486	<	* lockInterruptibly is interruptible.
486	>	* awaitUntil without a signal times out
487		*/
488	<	public void testLockInterruptibly1() {
489	<	final Mutex lock = new Mutex();
490	<	lock.lock();
491	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
492	<	try {
493	<	t.start();
494	<	t.interrupt();
495	<	lock.unlock();
266	<	t.join();
267	<	} catch(Exception e){
268	<	unexpectedException();
269	<	}
270	<	}
488	>	public void testAwaitUntil_Timeout() throws InterruptedException {
489	>	final Mutex sync = new Mutex();
490	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
491	>	sync.acquire(1);
492	>	java.util.Date d = new java.util.Date();
493	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
494	>	sync.release(1);
495	>	}
496
497		/**
498	<	* lockInterruptibly succeeds when unlocked, else is interruptible
498	>	* await returns when signalled
499		*/
500	<	public void testLockInterruptibly2() {
501	<	final Mutex lock = new Mutex();
502	<	try {
503	<	lock.lockInterruptibly();
504	<	} catch(Exception e) {
505	<	unexpectedException();
506	<	}
507	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
500	>	public void testAwait() throws InterruptedException {
501	>	final Mutex sync = new Mutex();
502	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
503	>	Thread t = new Thread(new CheckedRunnable() {
504	>	public void realRun() throws InterruptedException {
505	>	sync.acquire(1);
506	>	c.await();
507	>	sync.release(1);
508	>	}});
509	>
510	>	t.start();
511	>	Thread.sleep(SHORT_DELAY_MS);
512	>	sync.acquire(1);
513	>	c.signal();
514	>	sync.release(1);
515	>	t.join(SHORT_DELAY_MS);
516	>	assertFalse(t.isAlive());
517	>	}
518	>
519	>
520	>
521	>	/**
522	>	* hasWaiters throws NPE if null
523	>	*/
524	>	public void testHasWaitersNPE() {
525	>	final Mutex sync = new Mutex();
526		try {
527	<	t.start();
528	<	t.interrupt();
529	<	assertTrue(lock.isLocked());
287	<	t.join();
288	<	} catch(Exception e){
289	<	unexpectedException();
290	<	}
527	>	sync.hasWaiters(null);
528	>	shouldThrow();
529	>	} catch (NullPointerException success) {}
530		}
531
532		/**
533	<	* Calling await without holding lock throws IllegalMonitorStateException
533	>	* getWaitQueueLength throws NPE if null
534		*/
535	<	public void testAwait_IllegalMonitor() {
536	<	final Mutex lock = new Mutex();
298	<	final Condition c = lock.newCondition();
535	>	public void testGetWaitQueueLengthNPE() {
536	>	final Mutex sync = new Mutex();
537		try {
538	<	c.await();
538	>	sync.getWaitQueueLength(null);
539		shouldThrow();
540	<	}
303	<	catch (IllegalMonitorStateException success) {
304	<	}
305	<	catch (Exception ex) {
306	<	unexpectedException();
307	<	}
540	>	} catch (NullPointerException success) {}
541		}
542
543	+
544		/**
545	<	* Calling signal without holding lock throws IllegalMonitorStateException
545	>	* getWaitingThreads throws NPE if null
546		*/
547	<	public void testSignal_IllegalMonitor() {
548	<	final Mutex lock = new Mutex();
315	<	final Condition c = lock.newCondition();
547	>	public void testGetWaitingThreadsNPE() {
548	>	final Mutex sync = new Mutex();
549		try {
550	<	c.signal();
550	>	sync.getWaitingThreads(null);
551		shouldThrow();
552	<	}
320	<	catch (IllegalMonitorStateException success) {
321	<	}
322	<	catch (Exception ex) {
323	<	unexpectedException();
324	<	}
552	>	} catch (NullPointerException success) {}
553		}
554
555	+
556		/**
557	<	* awaitNanos without a signal times out
557	>	* hasWaiters throws IAE if not owned
558		*/
559	<	public void testAwaitNanos_Timeout() {
560	<	final Mutex lock = new Mutex();
561	<	final Condition c = lock.newCondition();
562	<	try {
563	<	lock.lock();
564	<	long t = c.awaitNanos(100);
565	<	assertTrue(t <= 0);
566	<	lock.unlock();
338	<	}
339	<	catch (Exception ex) {
340	<	unexpectedException();
341	<	}
559	>	public void testHasWaitersIAE() {
560	>	final Mutex sync = new Mutex();
561	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
562	>	final Mutex sync2 = new Mutex();
563	>	try {
564	>	sync2.hasWaiters(c);
565	>	shouldThrow();
566	>	} catch (IllegalArgumentException success) {}
567		}
568
569		/**
570	<	*  timed await without a signal times out
570	>	* hasWaiters throws IMSE if not synced
571		*/
572	<	public void testAwait_Timeout() {
573	<	final Mutex lock = new Mutex();
574	<	final Condition c = lock.newCondition();
575	<	try {
576	<	lock.lock();
577	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
578	<	lock.unlock();
354	<	}
355	<	catch (Exception ex) {
356	<	unexpectedException();
357	<	}
572	>	public void testHasWaitersIMSE() {
573	>	final Mutex sync = new Mutex();
574	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
575	>	try {
576	>	sync.hasWaiters(c);
577	>	shouldThrow();
578	>	} catch (IllegalMonitorStateException success) {}
579		}
580
581	+
582		/**
583	<	* awaitUntil without a signal times out
583	>	* getWaitQueueLength throws IAE if not owned
584		*/
585	<	public void testAwaitUntil_Timeout() {
586	<	final Mutex lock = new Mutex();
587	<	final Condition c = lock.newCondition();
588	<	try {
589	<	lock.lock();
590	<	java.util.Date d = new java.util.Date();
591	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
592	<	lock.unlock();
371	<	}
372	<	catch (Exception ex) {
373	<	unexpectedException();
374	<	}
585	>	public void testGetWaitQueueLengthIAE() {
586	>	final Mutex sync = new Mutex();
587	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
588	>	final Mutex sync2 = new Mutex();
589	>	try {
590	>	sync2.getWaitQueueLength(c);
591	>	shouldThrow();
592	>	} catch (IllegalArgumentException success) {}
593		}
594
595		/**
596	<	* await returns when signalled
596	>	* getWaitQueueLength throws IMSE if not synced
597		*/
598	<	public void testAwait() {
599	<	final Mutex lock = new Mutex();
600	<	final Condition c = lock.newCondition();
601	<	Thread t = new Thread(new Runnable() {
602	<	public void run() {
603	<	try {
604	<	lock.lock();
605	<	c.await();
606	<	lock.unlock();
607	<	}
608	<	catch(InterruptedException e) {
609	<	threadUnexpectedException();
610	<	}
611	<	}
612	<	});
613	<
614	<	try {
615	<	t.start();
616	<	Thread.sleep(SHORT_DELAY_MS);
617	<	lock.lock();
618	<	c.signal();
401	<	lock.unlock();
402	<	t.join(SHORT_DELAY_MS);
403	<	assertFalse(t.isAlive());
404	<	}
405	<	catch (Exception ex) {
406	<	unexpectedException();
407	<	}
598	>	public void testGetWaitQueueLengthIMSE() {
599	>	final Mutex sync = new Mutex();
600	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
601	>	try {
602	>	sync.getWaitQueueLength(c);
603	>	shouldThrow();
604	>	} catch (IllegalMonitorStateException success) {}
605	>	}
606	>
607	>
608	>	/**
609	>	* getWaitingThreads throws IAE if not owned
610	>	*/
611	>	public void testGetWaitingThreadsIAE() {
612	>	final Mutex sync = new Mutex();
613	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
614	>	final Mutex sync2 = new Mutex();
615	>	try {
616	>	sync2.getWaitingThreads(c);
617	>	shouldThrow();
618	>	} catch (IllegalArgumentException success) {}
619		}
620	<
620	>
621	>	/**
622	>	* getWaitingThreads throws IMSE if not synced
623	>	*/
624	>	public void testGetWaitingThreadsIMSE() {
625	>	final Mutex sync = new Mutex();
626	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
627	>	try {
628	>	sync.getWaitingThreads(c);
629	>	shouldThrow();
630	>	} catch (IllegalMonitorStateException success) {}
631	>	}
632	>
633	>
634	>
635	>	/**
636	>	* hasWaiters returns true when a thread is waiting, else false
637	>	*/
638	>	public void testHasWaiters() throws InterruptedException {
639	>	final Mutex sync = new Mutex();
640	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
641	>	Thread t = new Thread(new CheckedRunnable() {
642	>	public void realRun() throws InterruptedException {
643	>	sync.acquire(1);
644	>	threadAssertFalse(sync.hasWaiters(c));
645	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
646	>	c.await();
647	>	sync.release(1);
648	>	}});
649	>
650	>	t.start();
651	>	Thread.sleep(SHORT_DELAY_MS);
652	>	sync.acquire(1);
653	>	assertTrue(sync.hasWaiters(c));
654	>	assertEquals(1, sync.getWaitQueueLength(c));
655	>	c.signal();
656	>	sync.release(1);
657	>	Thread.sleep(SHORT_DELAY_MS);
658	>	sync.acquire(1);
659	>	assertFalse(sync.hasWaiters(c));
660	>	assertEquals(0, sync.getWaitQueueLength(c));
661	>	sync.release(1);
662	>	t.join(SHORT_DELAY_MS);
663	>	assertFalse(t.isAlive());
664	>	}
665	>
666	>	/**
667	>	* getWaitQueueLength returns number of waiting threads
668	>	*/
669	>	public void testGetWaitQueueLength() throws InterruptedException {
670	>	final Mutex sync = new Mutex();
671	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
672	>	Thread t1 = new Thread(new CheckedRunnable() {
673	>	public void realRun() throws InterruptedException {
674	>	sync.acquire(1);
675	>	threadAssertFalse(sync.hasWaiters(c));
676	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
677	>	c.await();
678	>	sync.release(1);
679	>	}});
680	>
681	>	Thread t2 = new Thread(new CheckedRunnable() {
682	>	public void realRun() throws InterruptedException {
683	>	sync.acquire(1);
684	>	threadAssertTrue(sync.hasWaiters(c));
685	>	threadAssertEquals(1, sync.getWaitQueueLength(c));
686	>	c.await();
687	>	sync.release(1);
688	>	}});
689	>
690	>	t1.start();
691	>	Thread.sleep(SHORT_DELAY_MS);
692	>	t2.start();
693	>	Thread.sleep(SHORT_DELAY_MS);
694	>	sync.acquire(1);
695	>	assertTrue(sync.hasWaiters(c));
696	>	assertEquals(2, sync.getWaitQueueLength(c));
697	>	c.signalAll();
698	>	sync.release(1);
699	>	Thread.sleep(SHORT_DELAY_MS);
700	>	sync.acquire(1);
701	>	assertFalse(sync.hasWaiters(c));
702	>	assertEquals(0, sync.getWaitQueueLength(c));
703	>	sync.release(1);
704	>	t1.join(SHORT_DELAY_MS);
705	>	t2.join(SHORT_DELAY_MS);
706	>	assertFalse(t1.isAlive());
707	>	assertFalse(t2.isAlive());
708	>	}
709	>
710	>	/**
711	>	* getWaitingThreads returns only and all waiting threads
712	>	*/
713	>	public void testGetWaitingThreads() throws InterruptedException {
714	>	final Mutex sync = new Mutex();
715	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
716	>	Thread t1 = new Thread(new CheckedRunnable() {
717	>	public void realRun() throws InterruptedException {
718	>	sync.acquire(1);
719	>	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
720	>	c.await();
721	>	sync.release(1);
722	>	}});
723	>
724	>	Thread t2 = new Thread(new CheckedRunnable() {
725	>	public void realRun() throws InterruptedException {
726	>	sync.acquire(1);
727	>	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
728	>	c.await();
729	>	sync.release(1);
730	>	}});
731	>
732	>	sync.acquire(1);
733	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
734	>	sync.release(1);
735	>	t1.start();
736	>	Thread.sleep(SHORT_DELAY_MS);
737	>	t2.start();
738	>	Thread.sleep(SHORT_DELAY_MS);
739	>	sync.acquire(1);
740	>	assertTrue(sync.hasWaiters(c));
741	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
742	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
743	>	c.signalAll();
744	>	sync.release(1);
745	>	Thread.sleep(SHORT_DELAY_MS);
746	>	sync.acquire(1);
747	>	assertFalse(sync.hasWaiters(c));
748	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
749	>	sync.release(1);
750	>	t1.join(SHORT_DELAY_MS);
751	>	t2.join(SHORT_DELAY_MS);
752	>	assertFalse(t1.isAlive());
753	>	assertFalse(t2.isAlive());
754	>	}
755	>
756	>
757	>
758	>	/**
759	>	* awaitUninterruptibly doesn't abort on interrupt
760	>	*/
761	>	public void testAwaitUninterruptibly() throws InterruptedException {
762	>	final Mutex sync = new Mutex();
763	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
764	>	Thread t = new Thread(new CheckedRunnable() {
765	>	public void realRun() {
766	>	sync.acquire(1);
767	>	c.awaitUninterruptibly();
768	>	sync.release(1);
769	>	}});
770	>
771	>	t.start();
772	>	Thread.sleep(SHORT_DELAY_MS);
773	>	t.interrupt();
774	>	sync.acquire(1);
775	>	c.signal();
776	>	sync.release(1);
777	>	t.join(SHORT_DELAY_MS);
778	>	assertFalse(t.isAlive());
779	>	}
780	>
781	>	/**
782	>	* await is interruptible
783	>	*/
784	>	public void testAwait_Interrupt() throws InterruptedException {
785	>	final Mutex sync = new Mutex();
786	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
787	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
788	>	public void realRun() throws InterruptedException {
789	>	sync.acquire(1);
790	>	c.await();
791	>	}});
792	>
793	>	t.start();
794	>	Thread.sleep(SHORT_DELAY_MS);
795	>	t.interrupt();
796	>	t.join(SHORT_DELAY_MS);
797	>	assertFalse(t.isAlive());
798	>	}
799	>
800	>	/**
801	>	* awaitNanos is interruptible
802	>	*/
803	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
804	>	final Mutex sync = new Mutex();
805	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
806	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
807	>	public void realRun() throws InterruptedException {
808	>	sync.acquire(1);
809	>	c.awaitNanos(LONG_DELAY_MS * 1000L * 1000L);
810	>	}});
811	>
812	>	t.start();
813	>	Thread.sleep(SHORT_DELAY_MS);
814	>	t.interrupt();
815	>	t.join(SHORT_DELAY_MS);
816	>	assertFalse(t.isAlive());
817	>	}
818	>
819	>	/**
820	>	* awaitUntil is interruptible
821	>	*/
822	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
823	>	final Mutex sync = new Mutex();
824	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
825	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
826	>	public void realRun() throws InterruptedException {
827	>	sync.acquire(1);
828	>	java.util.Date d = new java.util.Date();
829	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
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 * 1000L * 1000L));
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 * 1000L * 1000L);
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 * 1000L * 1000L));
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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