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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 1.23 by jsr166, Mon Nov 16 04:57:09 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
#	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	<	}
55	<
56	<	}
57	<
58	<	private final Sync sync = new Sync();
59	<	public boolean tryLock() {
60	<	return sync.tryAcquireExclusive(1);
61	<	}
62	<	public void lock() {
63	<	sync.acquireExclusiveUninterruptibly(1);
64	<	}
65	<	public void lockInterruptibly() throws InterruptedException {
66	<	sync.acquireExclusiveInterruptibly(1);
67	<	}
68	<	public boolean tryLock(long timeout, TimeUnit unit) throws InterruptedException {
69	<	return sync.acquireExclusiveTimed(1, unit.toNanos(timeout));
70	<	}
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); }
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	>	public boolean tryRelease(int releases) {
41	>	if (getState() == 0) throw new IllegalMonitorStateException();
42	>	setState(0);
43	>	return true;
44	>	}
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	>
61	>	public boolean tryReleaseShared(int ignore) {
62	>	setState(1);
63	>	return true;
64	>	}
65		}
66
67		/**
68	<	* A runnable calling lockInterruptibly
69	<	*/
70	<	class InterruptibleLockRunnable implements Runnable {
71	<	final Mutex lock;
72	<	InterruptibleLockRunnable(Mutex l) { lock = l; }
68	>	* A runnable calling acquireInterruptibly
69	>	*/
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	>	* isHeldExclusively is false upon construction
98	>	*/
99	>	public void testIsHeldExclusively() {
100	>	Mutex rl = new Mutex();
101	>	assertFalse(rl.isHeldExclusively());
102	>	}
103	>
104		/**
105	<	* locking an unlocked lock succeeds
105	>	* acquiring released sync succeeds
106		*/
107	<	public void testLock() {
107	>	public void testAcquire() {
108		Mutex rl = new Mutex();
109	<	rl.lock();
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	<	* tryLock on an unlocked lock succeeds
116	>	* tryAcquire on an released sync succeeds
117		*/
118	<	public void testTryLock() {
118	>	public void testTryAcquire() {
119		Mutex rl = new Mutex();
120	<	assertTrue(rl.tryLock());
121	<	assertTrue(rl.isLocked());
122	<	rl.unlock();
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));
128	>	public void testhasQueuedThreads() {
129	>	final Mutex sync = new Mutex();
130	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
131	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
132		try {
133	<	assertFalse(lock.hasQueuedThreads());
134	<	lock.lock();
133	>	assertFalse(sync.hasQueuedThreads());
134	>	sync.acquire(1);
135		t1.start();
136		Thread.sleep(SHORT_DELAY_MS);
137	<	assertTrue(lock.hasQueuedThreads());
137	>	assertTrue(sync.hasQueuedThreads());
138		t2.start();
139		Thread.sleep(SHORT_DELAY_MS);
140	<	assertTrue(lock.hasQueuedThreads());
140	>	assertTrue(sync.hasQueuedThreads());
141		t1.interrupt();
142		Thread.sleep(SHORT_DELAY_MS);
143	<	assertTrue(lock.hasQueuedThreads());
144	<	lock.unlock();
143	>	assertTrue(sync.hasQueuedThreads());
144	>	sync.release(1);
145		Thread.sleep(SHORT_DELAY_MS);
146	<	assertFalse(lock.hasQueuedThreads());
146	>	assertFalse(sync.hasQueuedThreads());
147		t1.join();
148		t2.join();
149	<	} catch(Exception e){
149	>	} catch (Exception e){
150		unexpectedException();
151		}
152	<	}
152	>	}
153
154		/**
155		* isQueued(null) throws NPE
156		*/
157	<	public void testIsQueuedNPE() {
158	<	final Mutex lock = new Mutex();
157	>	public void testIsQueuedNPE() {
158	>	final Mutex sync = new Mutex();
159		try {
160	<	lock.isQueued(null);
160	>	sync.isQueued(null);
161		shouldThrow();
162		} catch (NullPointerException success) {
163		}
#	Line 169 | Line 166 | public class AbstractQueuedSynchronizerT
166		/**
167		* isQueued reports whether a thread is queued.
168		*/
169	<	public void testIsQueued() {
170	<	final Mutex lock = new Mutex();
171	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
172	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
173	<	try {
174	<	assertFalse(lock.isQueued(t1));
175	<	assertFalse(lock.isQueued(t2));
176	<	lock.lock();
169	>	public void testIsQueued() {
170	>	final Mutex sync = new Mutex();
171	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
172	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
173	>	try {
174	>	assertFalse(sync.isQueued(t1));
175	>	assertFalse(sync.isQueued(t2));
176	>	sync.acquire(1);
177	>	t1.start();
178	>	Thread.sleep(SHORT_DELAY_MS);
179	>	assertTrue(sync.isQueued(t1));
180	>	t2.start();
181	>	Thread.sleep(SHORT_DELAY_MS);
182	>	assertTrue(sync.isQueued(t1));
183	>	assertTrue(sync.isQueued(t2));
184	>	t1.interrupt();
185	>	Thread.sleep(SHORT_DELAY_MS);
186	>	assertFalse(sync.isQueued(t1));
187	>	assertTrue(sync.isQueued(t2));
188	>	sync.release(1);
189	>	Thread.sleep(SHORT_DELAY_MS);
190	>	assertFalse(sync.isQueued(t1));
191	>	Thread.sleep(SHORT_DELAY_MS);
192	>	assertFalse(sync.isQueued(t2));
193	>	t1.join();
194	>	t2.join();
195	>	} catch (Exception e){
196	>	unexpectedException();
197	>	}
198	>	}
199	>
200	>	/**
201	>	* getFirstQueuedThread returns first waiting thread or null if none
202	>	*/
203	>	public void testGetFirstQueuedThread() {
204	>	final Mutex sync = new Mutex();
205	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
206	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
207	>	try {
208	>	assertNull(sync.getFirstQueuedThread());
209	>	sync.acquire(1);
210	>	t1.start();
211	>	Thread.sleep(SHORT_DELAY_MS);
212	>	assertEquals(t1, sync.getFirstQueuedThread());
213	>	t2.start();
214	>	Thread.sleep(SHORT_DELAY_MS);
215	>	assertEquals(t1, sync.getFirstQueuedThread());
216	>	t1.interrupt();
217	>	Thread.sleep(SHORT_DELAY_MS);
218	>	Thread.sleep(SHORT_DELAY_MS);
219	>	assertEquals(t2, sync.getFirstQueuedThread());
220	>	sync.release(1);
221	>	Thread.sleep(SHORT_DELAY_MS);
222	>	assertNull(sync.getFirstQueuedThread());
223	>	t1.join();
224	>	t2.join();
225	>	} catch (Exception e){
226	>	unexpectedException();
227	>	}
228	>	}
229	>
230	>
231	>	/**
232	>	* hasContended reports false if no thread has ever blocked, else true
233	>	*/
234	>	public void testHasContended() {
235	>	final Mutex sync = new Mutex();
236	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
237	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
238	>	try {
239	>	assertFalse(sync.hasContended());
240	>	sync.acquire(1);
241	>	t1.start();
242	>	Thread.sleep(SHORT_DELAY_MS);
243	>	assertTrue(sync.hasContended());
244	>	t2.start();
245	>	Thread.sleep(SHORT_DELAY_MS);
246	>	assertTrue(sync.hasContended());
247	>	t1.interrupt();
248	>	Thread.sleep(SHORT_DELAY_MS);
249	>	assertTrue(sync.hasContended());
250	>	sync.release(1);
251	>	Thread.sleep(SHORT_DELAY_MS);
252	>	assertTrue(sync.hasContended());
253	>	t1.join();
254	>	t2.join();
255	>	} catch (Exception e){
256	>	unexpectedException();
257	>	}
258	>	}
259	>
260	>	/**
261	>	* getQueuedThreads includes waiting threads
262	>	*/
263	>	public void testGetQueuedThreads() {
264	>	final Mutex sync = new Mutex();
265	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
266	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
267	>	try {
268	>	assertTrue(sync.getQueuedThreads().isEmpty());
269	>	sync.acquire(1);
270	>	assertTrue(sync.getQueuedThreads().isEmpty());
271		t1.start();
272		Thread.sleep(SHORT_DELAY_MS);
273	<	assertTrue(lock.isQueued(t1));
273	>	assertTrue(sync.getQueuedThreads().contains(t1));
274		t2.start();
275		Thread.sleep(SHORT_DELAY_MS);
276	<	assertTrue(lock.isQueued(t1));
277	<	assertTrue(lock.isQueued(t2));
276	>	assertTrue(sync.getQueuedThreads().contains(t1));
277	>	assertTrue(sync.getQueuedThreads().contains(t2));
278		t1.interrupt();
279		Thread.sleep(SHORT_DELAY_MS);
280	<	assertFalse(lock.isQueued(t1));
281	<	assertTrue(lock.isQueued(t2));
282	<	lock.unlock();
280	>	assertFalse(sync.getQueuedThreads().contains(t1));
281	>	assertTrue(sync.getQueuedThreads().contains(t2));
282	>	sync.release(1);
283		Thread.sleep(SHORT_DELAY_MS);
284	<	assertFalse(lock.isQueued(t1));
194	<	assertFalse(lock.isQueued(t2));
284	>	assertTrue(sync.getQueuedThreads().isEmpty());
285		t1.join();
286		t2.join();
287	<	} catch(Exception e){
287	>	} catch (Exception e){
288		unexpectedException();
289		}
290	<	}
290	>	}
291
292	+	/**
293	+	* getExclusiveQueuedThreads includes waiting threads
294	+	*/
295	+	public void testGetExclusiveQueuedThreads() {
296	+	final Mutex sync = new Mutex();
297	+	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
298	+	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
299	+	try {
300	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
301	+	sync.acquire(1);
302	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
303	+	t1.start();
304	+	Thread.sleep(SHORT_DELAY_MS);
305	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
306	+	t2.start();
307	+	Thread.sleep(SHORT_DELAY_MS);
308	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
309	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
310	+	t1.interrupt();
311	+	Thread.sleep(SHORT_DELAY_MS);
312	+	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
313	+	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
314	+	sync.release(1);
315	+	Thread.sleep(SHORT_DELAY_MS);
316	+	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
317	+	t1.join();
318	+	t2.join();
319	+	} catch (Exception e){
320	+	unexpectedException();
321	+	}
322	+	}
323
324		/**
325	<	* hasContended reports whether there has been contention
325	>	* getSharedQueuedThreads does not include exclusively waiting threads
326		*/
327	<	public void testhasContended() {
328	<	final Mutex lock = new Mutex();
329	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
330	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
327	>	public void testGetSharedQueuedThreads() {
328	>	final Mutex sync = new Mutex();
329	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
330	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
331		try {
332	<	assertFalse(lock.hasContended());
333	<	lock.lock();
332	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
333	>	sync.acquire(1);
334	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
335		t1.start();
336		Thread.sleep(SHORT_DELAY_MS);
337	<	assertTrue(lock.hasContended());
337	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
338		t2.start();
339		Thread.sleep(SHORT_DELAY_MS);
340	<	assertTrue(lock.hasContended());
340	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
341		t1.interrupt();
342		Thread.sleep(SHORT_DELAY_MS);
343	<	assertTrue(lock.hasContended());
344	<	lock.unlock();
343	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
344	>	sync.release(1);
345		Thread.sleep(SHORT_DELAY_MS);
346	<	assertTrue(lock.hasContended());
346	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
347		t1.join();
348		t2.join();
349	<	} catch(Exception e){
349	>	} catch (Exception e){
350		unexpectedException();
351		}
352	<	}
352	>	}
353
354		/**
355	<	* timed tryLock is interruptible.
355	>	* tryAcquireNanos is interruptible.
356		*/
357	<	public void testInterruptedException2() {
358	<	final Mutex lock = new Mutex();
359	<	lock.lock();
357	>	public void testInterruptedException2() {
358	>	final Mutex sync = new Mutex();
359	>	sync.acquire(1);
360		Thread t = new Thread(new Runnable() {
361		public void run() {
362		try {
363	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
363	>	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
364		threadShouldThrow();
365	<	} catch(InterruptedException success){}
365	>	} catch (InterruptedException success){}
366		}
367		});
368		try {
369		t.start();
370		t.interrupt();
371	<	} catch(Exception e){
371	>	} catch (Exception e){
372		unexpectedException();
373		}
374		}
375
376
377		/**
378	<	* TryLock on a locked lock fails
378	>	* TryAcquire on exclusively held sync fails
379		*/
380	<	public void testTryLockWhenLocked() {
381	<	final Mutex lock = new Mutex();
382	<	lock.lock();
380	>	public void testTryAcquireWhenSynced() {
381	>	final Mutex sync = new Mutex();
382	>	sync.acquire(1);
383		Thread t = new Thread(new Runnable() {
384		public void run() {
385	<	threadAssertFalse(lock.tryLock());
385	>	threadAssertFalse(sync.tryAcquire(1));
386		}
387		});
388		try {
389		t.start();
390		t.join();
391	<	lock.unlock();
392	<	} catch(Exception e){
391	>	sync.release(1);
392	>	} catch (Exception e){
393		unexpectedException();
394		}
395	<	}
395	>	}
396
397		/**
398	<	* Timed tryLock on a locked lock times out
398	>	* tryAcquireNanos on an exclusively held sync times out
399		*/
400	<	public void testTryLock_Timeout() {
401	<	final Mutex lock = new Mutex();
402	<	lock.lock();
400	>	public void testAcquireNanos_Timeout() {
401	>	final Mutex sync = new Mutex();
402	>	sync.acquire(1);
403		Thread t = new Thread(new Runnable() {
404		public void run() {
405		try {
406	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
406	>	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
407		} catch (Exception ex) {
408		threadUnexpectedException();
409		}
#	Line 290 | Line 412 | public class AbstractQueuedSynchronizerT
412		try {
413		t.start();
414		t.join();
415	<	lock.unlock();
416	<	} catch(Exception e){
415	>	sync.release(1);
416	>	} catch (Exception e){
417		unexpectedException();
418		}
419	<	}
420	<
421	<
419	>	}
420	>
421	>
422		/**
423	<	* isLocked is true when locked and false when not
423	>	* getState is true when acquired and false when not
424		*/
425	<	public void testIsLocked() {
426	<	final Mutex lock = new Mutex();
427	<	lock.lock();
428	<	assertTrue(lock.isLocked());
429	<	lock.unlock();
430	<	assertFalse(lock.isLocked());
431	<	Thread t = new Thread(new Runnable() {
425	>	public void testGetState() {
426	>	final Mutex sync = new Mutex();
427	>	sync.acquire(1);
428	>	assertTrue(sync.isHeldExclusively());
429	>	sync.release(1);
430	>	assertFalse(sync.isHeldExclusively());
431	>	Thread t = new Thread(new Runnable() {
432		public void run() {
433	<	lock.lock();
433	>	sync.acquire(1);
434		try {
435		Thread.sleep(SMALL_DELAY_MS);
436		}
437	<	catch(Exception e) {
437	>	catch (Exception e) {
438		threadUnexpectedException();
439		}
440	<	lock.unlock();
440	>	sync.release(1);
441		}
442		});
443		try {
444		t.start();
445		Thread.sleep(SHORT_DELAY_MS);
446	<	assertTrue(lock.isLocked());
446	>	assertTrue(sync.isHeldExclusively());
447		t.join();
448	<	assertFalse(lock.isLocked());
449	<	} catch(Exception e){
448	>	assertFalse(sync.isHeldExclusively());
449	>	} catch (Exception e){
450		unexpectedException();
451		}
452		}
453
454
455		/**
456	<	* lockInterruptibly is interruptible.
456	>	* acquireInterruptibly is interruptible.
457		*/
458	<	public void testLockInterruptibly1() {
459	<	final Mutex lock = new Mutex();
460	<	lock.lock();
461	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
458	>	public void testAcquireInterruptibly1() {
459	>	final Mutex sync = new Mutex();
460	>	sync.acquire(1);
461	>	Thread t = new Thread(new InterruptedSyncRunnable(sync));
462		try {
463		t.start();
464	+	Thread.sleep(SHORT_DELAY_MS);
465		t.interrupt();
466	<	lock.unlock();
466	>	Thread.sleep(SHORT_DELAY_MS);
467	>	sync.release(1);
468		t.join();
469	<	} catch(Exception e){
469	>	} catch (Exception e){
470		unexpectedException();
471		}
472	<	}
472	>	}
473
474		/**
475	<	* lockInterruptibly succeeds when unlocked, else is interruptible
475	>	* acquireInterruptibly succeeds when released, else is interruptible
476		*/
477	<	public void testLockInterruptibly2() {
478	<	final Mutex lock = new Mutex();
477	>	public void testAcquireInterruptibly2() {
478	>	final Mutex sync = new Mutex();
479		try {
480	<	lock.lockInterruptibly();
481	<	} catch(Exception e) {
480	>	sync.acquireInterruptibly(1);
481	>	} catch (Exception e) {
482		unexpectedException();
483		}
484	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
484	>	Thread t = new Thread(new InterruptedSyncRunnable(sync));
485		try {
486		t.start();
487		t.interrupt();
488	<	assertTrue(lock.isLocked());
488	>	assertTrue(sync.isHeldExclusively());
489		t.join();
490	<	} catch(Exception e){
490	>	} catch (Exception e){
491		unexpectedException();
492		}
493		}
494
495		/**
496	<	* Calling await without holding lock throws IllegalMonitorStateException
496	>	* owns is true for a condition created by sync else false
497	>	*/
498	>	public void testOwns() {
499	>	final Mutex sync = new Mutex();
500	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
501	>	final Mutex sync2 = new Mutex();
502	>	assertTrue(sync.owns(c));
503	>	assertFalse(sync2.owns(c));
504	>	}
505	>
506	>	/**
507	>	* Calling await without holding sync throws IllegalMonitorStateException
508		*/
509		public void testAwait_IllegalMonitor() {
510	<	final Mutex lock = new Mutex();
511	<	final Condition c = lock.newCondition();
510	>	final Mutex sync = new Mutex();
511	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
512		try {
513		c.await();
514		shouldThrow();
#	Line 386 | Line 521 | public class AbstractQueuedSynchronizerT
521		}
522
523		/**
524	<	* Calling signal without holding lock throws IllegalMonitorStateException
524	>	* Calling signal without holding sync throws IllegalMonitorStateException
525		*/
526		public void testSignal_IllegalMonitor() {
527	<	final Mutex lock = new Mutex();
528	<	final Condition c = lock.newCondition();
527	>	final Mutex sync = new Mutex();
528	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
529		try {
530		c.signal();
531		shouldThrow();
#	Line 406 | Line 541 | public class AbstractQueuedSynchronizerT
541		* awaitNanos without a signal times out
542		*/
543		public void testAwaitNanos_Timeout() {
544	<	final Mutex lock = new Mutex();
545	<	final Condition c = lock.newCondition();
544	>	final Mutex sync = new Mutex();
545	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
546		try {
547	<	lock.lock();
547	>	sync.acquire(1);
548		long t = c.awaitNanos(100);
549		assertTrue(t <= 0);
550	<	lock.unlock();
550	>	sync.release(1);
551		}
552		catch (Exception ex) {
553		unexpectedException();
#	Line 420 | Line 555 | public class AbstractQueuedSynchronizerT
555		}
556
557		/**
558	<	*  timed await without a signal times out
558	>	*  Timed await without a signal times out
559		*/
560		public void testAwait_Timeout() {
561	<	final Mutex lock = new Mutex();
562	<	final Condition c = lock.newCondition();
561	>	final Mutex sync = new Mutex();
562	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
563		try {
564	<	lock.lock();
564	>	sync.acquire(1);
565		assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
566	<	lock.unlock();
566	>	sync.release(1);
567		}
568		catch (Exception ex) {
569		unexpectedException();
#	Line 439 | Line 574 | public class AbstractQueuedSynchronizerT
574		* awaitUntil without a signal times out
575		*/
576		public void testAwaitUntil_Timeout() {
577	<	final Mutex lock = new Mutex();
578	<	final Condition c = lock.newCondition();
577	>	final Mutex sync = new Mutex();
578	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
579		try {
580	<	lock.lock();
580	>	sync.acquire(1);
581		java.util.Date d = new java.util.Date();
582		assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
583	<	lock.unlock();
583	>	sync.release(1);
584		}
585		catch (Exception ex) {
586		unexpectedException();
#	Line 456 | Line 591 | public class AbstractQueuedSynchronizerT
591		* await returns when signalled
592		*/
593		public void testAwait() {
594	<	final Mutex lock = new Mutex();
595	<	final Condition c = lock.newCondition();
596	<	Thread t = new Thread(new Runnable() {
594	>	final Mutex sync = new Mutex();
595	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
596	>	Thread t = new Thread(new Runnable() {
597	>	public void run() {
598	>	try {
599	>	sync.acquire(1);
600	>	c.await();
601	>	sync.release(1);
602	>	}
603	>	catch (InterruptedException e) {
604	>	threadUnexpectedException();
605	>	}
606	>	}
607	>	});
608	>
609	>	try {
610	>	t.start();
611	>	Thread.sleep(SHORT_DELAY_MS);
612	>	sync.acquire(1);
613	>	c.signal();
614	>	sync.release(1);
615	>	t.join(SHORT_DELAY_MS);
616	>	assertFalse(t.isAlive());
617	>	}
618	>	catch (Exception ex) {
619	>	unexpectedException();
620	>	}
621	>	}
622	>
623	>
624	>
625	>	/**
626	>	* hasWaiters throws NPE if null
627	>	*/
628	>	public void testHasWaitersNPE() {
629	>	final Mutex sync = new Mutex();
630	>	try {
631	>	sync.hasWaiters(null);
632	>	shouldThrow();
633	>	} catch (NullPointerException success) {
634	>	} catch (Exception ex) {
635	>	unexpectedException();
636	>	}
637	>	}
638	>
639	>	/**
640	>	* getWaitQueueLength throws NPE if null
641	>	*/
642	>	public void testGetWaitQueueLengthNPE() {
643	>	final Mutex sync = new Mutex();
644	>	try {
645	>	sync.getWaitQueueLength(null);
646	>	shouldThrow();
647	>	} catch (NullPointerException success) {
648	>	} catch (Exception ex) {
649	>	unexpectedException();
650	>	}
651	>	}
652	>
653	>
654	>	/**
655	>	* getWaitingThreads throws NPE if null
656	>	*/
657	>	public void testGetWaitingThreadsNPE() {
658	>	final Mutex sync = new Mutex();
659	>	try {
660	>	sync.getWaitingThreads(null);
661	>	shouldThrow();
662	>	} catch (NullPointerException success) {
663	>	} catch (Exception ex) {
664	>	unexpectedException();
665	>	}
666	>	}
667	>
668	>
669	>	/**
670	>	* hasWaiters throws IAE if not owned
671	>	*/
672	>	public void testHasWaitersIAE() {
673	>	final Mutex sync = new Mutex();
674	>	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
675	>	final Mutex sync2 = new Mutex();
676	>	try {
677	>	sync2.hasWaiters(c);
678	>	shouldThrow();
679	>	} catch (IllegalArgumentException success) {
680	>	} catch (Exception ex) {
681	>	unexpectedException();
682	>	}
683	>	}
684	>
685	>	/**
686	>	* hasWaiters throws IMSE if not synced
687	>	*/
688	>	public void testHasWaitersIMSE() {
689	>	final Mutex sync = new Mutex();
690	>	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
691	>	try {
692	>	sync.hasWaiters(c);
693	>	shouldThrow();
694	>	} catch (IllegalMonitorStateException success) {
695	>	} catch (Exception ex) {
696	>	unexpectedException();
697	>	}
698	>	}
699	>
700	>
701	>	/**
702	>	* getWaitQueueLength throws IAE if not owned
703	>	*/
704	>	public void testGetWaitQueueLengthIAE() {
705	>	final Mutex sync = new Mutex();
706	>	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
707	>	final Mutex sync2 = new Mutex();
708	>	try {
709	>	sync2.getWaitQueueLength(c);
710	>	shouldThrow();
711	>	} catch (IllegalArgumentException success) {
712	>	} catch (Exception ex) {
713	>	unexpectedException();
714	>	}
715	>	}
716	>
717	>	/**
718	>	* getWaitQueueLength throws IMSE if not synced
719	>	*/
720	>	public void testGetWaitQueueLengthIMSE() {
721	>	final Mutex sync = new Mutex();
722	>	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
723	>	try {
724	>	sync.getWaitQueueLength(c);
725	>	shouldThrow();
726	>	} catch (IllegalMonitorStateException success) {
727	>	} catch (Exception ex) {
728	>	unexpectedException();
729	>	}
730	>	}
731	>
732	>
733	>	/**
734	>	* getWaitingThreads throws IAE if not owned
735	>	*/
736	>	public void testGetWaitingThreadsIAE() {
737	>	final Mutex sync = new Mutex();
738	>	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
739	>	final Mutex sync2 = new Mutex();
740	>	try {
741	>	sync2.getWaitingThreads(c);
742	>	shouldThrow();
743	>	} catch (IllegalArgumentException success) {
744	>	} catch (Exception ex) {
745	>	unexpectedException();
746	>	}
747	>	}
748	>
749	>	/**
750	>	* getWaitingThreads throws IMSE if not synced
751	>	*/
752	>	public void testGetWaitingThreadsIMSE() {
753	>	final Mutex sync = new Mutex();
754	>	final AbstractQueuedSynchronizer.ConditionObject c = (sync.newCondition());
755	>	try {
756	>	sync.getWaitingThreads(c);
757	>	shouldThrow();
758	>	} catch (IllegalMonitorStateException success) {
759	>	} catch (Exception ex) {
760	>	unexpectedException();
761	>	}
762	>	}
763	>
764	>
765	>
766	>	/**
767	>	* hasWaiters returns true when a thread is waiting, else false
768	>	*/
769	>	public void testHasWaiters() {
770	>	final Mutex sync = new Mutex();
771	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
772	>	Thread t = new Thread(new Runnable() {
773		public void run() {
774		try {
775	<	lock.lock();
775	>	sync.acquire(1);
776	>	threadAssertFalse(sync.hasWaiters(c));
777	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
778		c.await();
779	<	lock.unlock();
779	>	sync.release(1);
780		}
781	<	catch(InterruptedException e) {
781	>	catch (InterruptedException e) {
782		threadUnexpectedException();
783		}
784		}
#	Line 474 | Line 787 | public class AbstractQueuedSynchronizerT
787		try {
788		t.start();
789		Thread.sleep(SHORT_DELAY_MS);
790	<	lock.lock();
790	>	sync.acquire(1);
791	>	assertTrue(sync.hasWaiters(c));
792	>	assertEquals(1, sync.getWaitQueueLength(c));
793		c.signal();
794	<	lock.unlock();
794	>	sync.release(1);
795	>	Thread.sleep(SHORT_DELAY_MS);
796	>	sync.acquire(1);
797	>	assertFalse(sync.hasWaiters(c));
798	>	assertEquals(0, sync.getWaitQueueLength(c));
799	>	sync.release(1);
800		t.join(SHORT_DELAY_MS);
801		assertFalse(t.isAlive());
802		}
#	Line 484 | Line 804 | public class AbstractQueuedSynchronizerT
804		unexpectedException();
805		}
806		}
807	<
807	>
808	>	/**
809	>	* getWaitQueueLength returns number of waiting threads
810	>	*/
811	>	public void testGetWaitQueueLength() {
812	>	final Mutex sync = new Mutex();
813	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
814	>	Thread t1 = new Thread(new Runnable() {
815	>	public void run() {
816	>	try {
817	>	sync.acquire(1);
818	>	threadAssertFalse(sync.hasWaiters(c));
819	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
820	>	c.await();
821	>	sync.release(1);
822	>	}
823	>	catch (InterruptedException e) {
824	>	threadUnexpectedException();
825	>	}
826	>	}
827	>	});
828	>
829	>	Thread t2 = new Thread(new Runnable() {
830	>	public void run() {
831	>	try {
832	>	sync.acquire(1);
833	>	threadAssertTrue(sync.hasWaiters(c));
834	>	threadAssertEquals(1, sync.getWaitQueueLength(c));
835	>	c.await();
836	>	sync.release(1);
837	>	}
838	>	catch (InterruptedException e) {
839	>	threadUnexpectedException();
840	>	}
841	>	}
842	>	});
843	>
844	>	try {
845	>	t1.start();
846	>	Thread.sleep(SHORT_DELAY_MS);
847	>	t2.start();
848	>	Thread.sleep(SHORT_DELAY_MS);
849	>	sync.acquire(1);
850	>	assertTrue(sync.hasWaiters(c));
851	>	assertEquals(2, sync.getWaitQueueLength(c));
852	>	c.signalAll();
853	>	sync.release(1);
854	>	Thread.sleep(SHORT_DELAY_MS);
855	>	sync.acquire(1);
856	>	assertFalse(sync.hasWaiters(c));
857	>	assertEquals(0, sync.getWaitQueueLength(c));
858	>	sync.release(1);
859	>	t1.join(SHORT_DELAY_MS);
860	>	t2.join(SHORT_DELAY_MS);
861	>	assertFalse(t1.isAlive());
862	>	assertFalse(t2.isAlive());
863	>	}
864	>	catch (Exception ex) {
865	>	unexpectedException();
866	>	}
867	>	}
868	>
869	>	/**
870	>	* getWaitingThreads returns only and all waiting threads
871	>	*/
872	>	public void testGetWaitingThreads() {
873	>	final Mutex sync = new Mutex();
874	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
875	>	Thread t1 = new Thread(new Runnable() {
876	>	public void run() {
877	>	try {
878	>	sync.acquire(1);
879	>	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
880	>	c.await();
881	>	sync.release(1);
882	>	}
883	>	catch (InterruptedException e) {
884	>	threadUnexpectedException();
885	>	}
886	>	}
887	>	});
888	>
889	>	Thread t2 = new Thread(new Runnable() {
890	>	public void run() {
891	>	try {
892	>	sync.acquire(1);
893	>	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
894	>	c.await();
895	>	sync.release(1);
896	>	}
897	>	catch (InterruptedException e) {
898	>	threadUnexpectedException();
899	>	}
900	>	}
901	>	});
902	>
903	>	try {
904	>	sync.acquire(1);
905	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
906	>	sync.release(1);
907	>	t1.start();
908	>	Thread.sleep(SHORT_DELAY_MS);
909	>	t2.start();
910	>	Thread.sleep(SHORT_DELAY_MS);
911	>	sync.acquire(1);
912	>	assertTrue(sync.hasWaiters(c));
913	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
914	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
915	>	c.signalAll();
916	>	sync.release(1);
917	>	Thread.sleep(SHORT_DELAY_MS);
918	>	sync.acquire(1);
919	>	assertFalse(sync.hasWaiters(c));
920	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
921	>	sync.release(1);
922	>	t1.join(SHORT_DELAY_MS);
923	>	t2.join(SHORT_DELAY_MS);
924	>	assertFalse(t1.isAlive());
925	>	assertFalse(t2.isAlive());
926	>	}
927	>	catch (Exception ex) {
928	>	unexpectedException();
929	>	}
930	>	}
931	>
932	>
933	>
934	>	/**
935	>	* awaitUninterruptibly doesn't abort on interrupt
936	>	*/
937	>	public void testAwaitUninterruptibly() {
938	>	final Mutex sync = new Mutex();
939	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
940	>	Thread t = new Thread(new Runnable() {
941	>	public void run() {
942	>	sync.acquire(1);
943	>	c.awaitUninterruptibly();
944	>	sync.release(1);
945	>	}
946	>	});
947	>
948	>	try {
949	>	t.start();
950	>	Thread.sleep(SHORT_DELAY_MS);
951	>	t.interrupt();
952	>	sync.acquire(1);
953	>	c.signal();
954	>	sync.release(1);
955	>	t.join(SHORT_DELAY_MS);
956	>	assertFalse(t.isAlive());
957	>	}
958	>	catch (Exception ex) {
959	>	unexpectedException();
960	>	}
961	>	}
962	>
963	>	/**
964	>	* await is interruptible
965	>	*/
966	>	public void testAwait_Interrupt() {
967	>	final Mutex sync = new Mutex();
968	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
969	>	Thread t = new Thread(new Runnable() {
970	>	public void run() {
971	>	try {
972	>	sync.acquire(1);
973	>	c.await();
974	>	sync.release(1);
975	>	threadShouldThrow();
976	>	}
977	>	catch (InterruptedException success) {
978	>	}
979	>	}
980	>	});
981	>
982	>	try {
983	>	t.start();
984	>	Thread.sleep(SHORT_DELAY_MS);
985	>	t.interrupt();
986	>	t.join(SHORT_DELAY_MS);
987	>	assertFalse(t.isAlive());
988	>	}
989	>	catch (Exception ex) {
990	>	unexpectedException();
991	>	}
992	>	}
993	>
994	>	/**
995	>	* awaitNanos is interruptible
996	>	*/
997	>	public void testAwaitNanos_Interrupt() {
998	>	final Mutex sync = new Mutex();
999	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1000	>	Thread t = new Thread(new Runnable() {
1001	>	public void run() {
1002	>	try {
1003	>	sync.acquire(1);
1004	>	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
1005	>	sync.release(1);
1006	>	threadShouldThrow();
1007	>	}
1008	>	catch (InterruptedException success) {
1009	>	}
1010	>	}
1011	>	});
1012	>
1013	>	try {
1014	>	t.start();
1015	>	Thread.sleep(SHORT_DELAY_MS);
1016	>	t.interrupt();
1017	>	t.join(SHORT_DELAY_MS);
1018	>	assertFalse(t.isAlive());
1019	>	}
1020	>	catch (Exception ex) {
1021	>	unexpectedException();
1022	>	}
1023	>	}
1024	>
1025	>	/**
1026	>	* awaitUntil is interruptible
1027	>	*/
1028	>	public void testAwaitUntil_Interrupt() {
1029	>	final Mutex sync = new Mutex();
1030	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1031	>	Thread t = new Thread(new Runnable() {
1032	>	public void run() {
1033	>	try {
1034	>	sync.acquire(1);
1035	>	java.util.Date d = new java.util.Date();
1036	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
1037	>	sync.release(1);
1038	>	threadShouldThrow();
1039	>	}
1040	>	catch (InterruptedException success) {
1041	>	}
1042	>	}
1043	>	});
1044	>
1045	>	try {
1046	>	t.start();
1047	>	Thread.sleep(SHORT_DELAY_MS);
1048	>	t.interrupt();
1049	>	t.join(SHORT_DELAY_MS);
1050	>	assertFalse(t.isAlive());
1051	>	}
1052	>	catch (Exception ex) {
1053	>	unexpectedException();
1054	>	}
1055	>	}
1056	>
1057	>	/**
1058	>	* signalAll wakes up all threads
1059	>	*/
1060	>	public void testSignalAll() {
1061	>	final Mutex sync = new Mutex();
1062	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
1063	>	Thread t1 = new Thread(new Runnable() {
1064	>	public void run() {
1065	>	try {
1066	>	sync.acquire(1);
1067	>	c.await();
1068	>	sync.release(1);
1069	>	}
1070	>	catch (InterruptedException e) {
1071	>	threadUnexpectedException();
1072	>	}
1073	>	}
1074	>	});
1075	>
1076	>	Thread t2 = new Thread(new Runnable() {
1077	>	public void run() {
1078	>	try {
1079	>	sync.acquire(1);
1080	>	c.await();
1081	>	sync.release(1);
1082	>	}
1083	>	catch (InterruptedException e) {
1084	>	threadUnexpectedException();
1085	>	}
1086	>	}
1087	>	});
1088	>
1089	>	try {
1090	>	t1.start();
1091	>	t2.start();
1092	>	Thread.sleep(SHORT_DELAY_MS);
1093	>	sync.acquire(1);
1094	>	c.signalAll();
1095	>	sync.release(1);
1096	>	t1.join(SHORT_DELAY_MS);
1097	>	t2.join(SHORT_DELAY_MS);
1098	>	assertFalse(t1.isAlive());
1099	>	assertFalse(t2.isAlive());
1100	>	}
1101	>	catch (Exception ex) {
1102	>	unexpectedException();
1103	>	}
1104	>	}
1105	>
1106	>
1107	>	/**
1108	>	* toString indicates current state
1109	>	*/
1110	>	public void testToString() {
1111	>	Mutex sync = new Mutex();
1112	>	String us = sync.toString();
1113	>	assertTrue(us.indexOf("State = 0") >= 0);
1114	>	sync.acquire(1);
1115	>	String ls = sync.toString();
1116	>	assertTrue(ls.indexOf("State = 1") >= 0);
1117	>	}
1118	>
1119	>	/**
1120	>	* A serialized AQS deserializes with current state
1121	>	*/
1122	>	public void testSerialization() {
1123	>	Mutex l = new Mutex();
1124	>	l.acquire(1);
1125	>	assertTrue(l.isHeldExclusively());
1126	>
1127	>	try {
1128	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
1129	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
1130	>	out.writeObject(l);
1131	>	out.close();
1132	>
1133	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
1134	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
1135	>	Mutex r = (Mutex) in.readObject();
1136	>	assertTrue(r.isHeldExclusively());
1137	>	} catch (Exception e){
1138	>	e.printStackTrace();
1139	>	unexpectedException();
1140	>	}
1141	>	}
1142	>
1143	>
1144	>	/**
1145	>	* tryReleaseShared setting state changes getState
1146	>	*/
1147	>	public void testGetStateWithReleaseShared() {
1148	>	final BooleanLatch l = new BooleanLatch();
1149	>	assertFalse(l.isSignalled());
1150	>	l.releaseShared(0);
1151	>	assertTrue(l.isSignalled());
1152	>	}
1153	>
1154	>	/**
1155	>	* releaseShared has no effect when already signalled
1156	>	*/
1157	>	public void testReleaseShared() {
1158	>	final BooleanLatch l = new BooleanLatch();
1159	>	assertFalse(l.isSignalled());
1160	>	l.releaseShared(0);
1161	>	assertTrue(l.isSignalled());
1162	>	l.releaseShared(0);
1163	>	assertTrue(l.isSignalled());
1164	>	}
1165	>
1166	>	/**
1167	>	* acquireSharedInterruptibly returns after release, but not before
1168	>	*/
1169	>	public void testAcquireSharedInterruptibly() {
1170	>	final BooleanLatch l = new BooleanLatch();
1171	>
1172	>	Thread t = new Thread(new Runnable() {
1173	>	public void run() {
1174	>	try {
1175	>	threadAssertFalse(l.isSignalled());
1176	>	l.acquireSharedInterruptibly(0);
1177	>	threadAssertTrue(l.isSignalled());
1178	>	} catch (InterruptedException e){
1179	>	threadUnexpectedException();
1180	>	}
1181	>	}
1182	>	});
1183	>	try {
1184	>	t.start();
1185	>	assertFalse(l.isSignalled());
1186	>	Thread.sleep(SHORT_DELAY_MS);
1187	>	l.releaseShared(0);
1188	>	assertTrue(l.isSignalled());
1189	>	t.join();
1190	>	} catch (InterruptedException e){
1191	>	unexpectedException();
1192	>	}
1193	>	}
1194	>
1195	>
1196	>	/**
1197	>	* acquireSharedTimed returns after release
1198	>	*/
1199	>	public void testAsquireSharedTimed() {
1200	>	final BooleanLatch l = new BooleanLatch();
1201	>
1202	>	Thread t = new Thread(new Runnable() {
1203	>	public void run() {
1204	>	try {
1205	>	threadAssertFalse(l.isSignalled());
1206	>	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
1207	>	threadAssertTrue(l.isSignalled());
1208	>
1209	>	} catch (InterruptedException e){
1210	>	threadUnexpectedException();
1211	>	}
1212	>	}
1213	>	});
1214	>	try {
1215	>	t.start();
1216	>	assertFalse(l.isSignalled());
1217	>	Thread.sleep(SHORT_DELAY_MS);
1218	>	l.releaseShared(0);
1219	>	assertTrue(l.isSignalled());
1220	>	t.join();
1221	>	} catch (InterruptedException e){
1222	>	unexpectedException();
1223	>	}
1224	>	}
1225	>
1226	>	/**
1227	>	* acquireSharedInterruptibly throws IE if interrupted before released
1228	>	*/
1229	>	public void testAcquireSharedInterruptibly_InterruptedException() {
1230	>	final BooleanLatch l = new BooleanLatch();
1231	>	Thread t = new Thread(new Runnable() {
1232	>	public void run() {
1233	>	try {
1234	>	threadAssertFalse(l.isSignalled());
1235	>	l.acquireSharedInterruptibly(0);
1236	>	threadShouldThrow();
1237	>	} catch (InterruptedException success){}
1238	>	}
1239	>	});
1240	>	t.start();
1241	>	try {
1242	>	assertFalse(l.isSignalled());
1243	>	t.interrupt();
1244	>	t.join();
1245	>	} catch (InterruptedException e){
1246	>	unexpectedException();
1247	>	}
1248	>	}
1249	>
1250	>	/**
1251	>	* acquireSharedTimed throws IE if interrupted before released
1252	>	*/
1253	>	public void testAcquireSharedNanos_InterruptedException() {
1254	>	final BooleanLatch l = new BooleanLatch();
1255	>	Thread t = new Thread(new Runnable() {
1256	>	public void run() {
1257	>	try {
1258	>	threadAssertFalse(l.isSignalled());
1259	>	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
1260	>	threadShouldThrow();
1261	>	} catch (InterruptedException success){}
1262	>	}
1263	>	});
1264	>	t.start();
1265	>	try {
1266	>	Thread.sleep(SHORT_DELAY_MS);
1267	>	assertFalse(l.isSignalled());
1268	>	t.interrupt();
1269	>	t.join();
1270	>	} catch (InterruptedException e){
1271	>	unexpectedException();
1272	>	}
1273	>	}
1274	>
1275	>	/**
1276	>	* acquireSharedTimed times out if not released before timeout
1277	>	*/
1278	>	public void testAcquireSharedNanos_Timeout() {
1279	>	final BooleanLatch l = new BooleanLatch();
1280	>	Thread t = new Thread(new Runnable() {
1281	>	public void run() {
1282	>	try {
1283	>	threadAssertFalse(l.isSignalled());
1284	>	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1285	>	} catch (InterruptedException ie){
1286	>	threadUnexpectedException();
1287	>	}
1288	>	}
1289	>	});
1290	>	t.start();
1291	>	try {
1292	>	Thread.sleep(SHORT_DELAY_MS);
1293	>	assertFalse(l.isSignalled());
1294	>	t.join();
1295	>	} catch (InterruptedException e){
1296	>	unexpectedException();
1297	>	}
1298	>	}
1299	>
1300	>
1301		}

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