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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.13 by dl, Fri Jan 9 15:39:10 2004 UTC vs.
Revision 1.31 by jsr166, Sat Nov 21 17:54:04 2009 UTC

#	Line 2 | Line 2
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4		* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9
10		import junit.framework.*;
11		import java.util.*;
12		import java.util.concurrent.*;
13	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
14		import java.util.concurrent.locks.*;
15		import java.io.*;
16
#	Line 30 | Line 31 | public class AbstractQueuedSynchronizerT
31		* ReentrantReadWriteLock, and Semaphore
32		*/
33		static class Mutex extends AbstractQueuedSynchronizer {
34	<	public boolean isLocked() { return getState() == 1; }
35	<
36	<	public boolean tryAcquireExclusive(int acquires) {
37	<	assertTrue(acquires == 1);
34	>	public boolean isHeldExclusively() { return getState() == 1; }
35	>
36	>	public boolean tryAcquire(int acquires) {
37	>	assertTrue(acquires == 1);
38		return compareAndSetState(0, 1);
39		}
40	<
41	<	public boolean tryReleaseExclusive(int releases) {
40	>
41	>	public boolean tryRelease(int releases) {
42	>	if (getState() == 0) throw new IllegalMonitorStateException();
43		setState(0);
44		return true;
45		}
46	<
47	<	public void checkConditionAccess(Thread thread) {
46	<	if (getState() == 0) throw new IllegalMonitorStateException();
47	<	}
48	<
49	<	public ConditionObject newCondition() { return new ConditionObject(); }
50	<
51	<	public void lock() {
52	<	acquireExclusiveUninterruptibly(1);
53	<	}
46	>
47	>	public AbstractQueuedSynchronizer.ConditionObject newCondition() { return new AbstractQueuedSynchronizer.ConditionObject(); }
48
49		}
50
51	<
51	>
52		/**
53		* A simple latch class, to test shared mode.
54		*/
55	<	static class BooleanLatch extends AbstractQueuedSynchronizer {
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	<
61	>
62		public boolean tryReleaseShared(int ignore) {
63		setState(1);
64		return true;
#	Line 72 | Line 66 | public class AbstractQueuedSynchronizerT
66		}
67
68		/**
69	<	* A runnable calling acquireExclusiveInterruptibly
69	>	* A runnable calling acquireInterruptibly that does not expect to
70	>	* be interrupted.
71		*/
72	<	class InterruptibleLockRunnable implements Runnable {
73	<	final Mutex lock;
74	<	InterruptibleLockRunnable(Mutex l) { lock = l; }
75	<	public void run() {
76	<	try {
82	<	lock.acquireExclusiveInterruptibly(1);
83	<	} catch(InterruptedException success){}
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 acquireExclusiveInterruptibly 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 {
97	<	lock.acquireExclusiveInterruptibly(1);
98	<	threadShouldThrow();
99	<	} 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	<	* acquireExclusiveUninterruptiblying an releaseExclusiveed lock succeeds
94	>	* isHeldExclusively is false upon construction
95		*/
96	<	public void testAcquireExclusiveUninterruptibly() {
97	<	Mutex rl = new Mutex();
98	<	rl.acquireExclusiveUninterruptibly(1);
109	<	assertTrue(rl.isLocked());
110	<	rl.releaseExclusive(1);
96	>	public void testIsHeldExclusively() {
97	>	Mutex rl = new Mutex();
98	>	assertFalse(rl.isHeldExclusively());
99		}
100
101		/**
102	<	* tryAcquireExclusive on an releaseExclusiveed lock succeeds
102	>	* acquiring released sync succeeds
103		*/
104	<	public void testTryAcquireExclusive() {
105	<	Mutex rl = new Mutex();
106	<	assertTrue(rl.tryAcquireExclusive(1));
107	<	assertTrue(rl.isLocked());
108	<	rl.releaseExclusive(1);
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.acquireExclusiveUninterruptibly(1);
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.releaseExclusive(1);
142	<	Thread.sleep(SHORT_DELAY_MS);
143	<	assertFalse(lock.hasQueuedThreads());
144	<	t1.join();
145	<	t2.join();
147	<	} catch(Exception e){
148	<	unexpectedException();
149	<	}
150	<	}
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		* isQueued(null) throws NPE
149		*/
150	<	public void testIsQueuedNPE() {
151	<	final Mutex lock = new Mutex();
150	>	public void testIsQueuedNPE() {
151	>	final Mutex sync = new Mutex();
152		try {
153	<	lock.isQueued(null);
153	>	sync.isQueued(null);
154		shouldThrow();
155	<	} catch (NullPointerException success) {
161	<	}
155	>	} catch (NullPointerException success) {}
156		}
157
158		/**
159		* isQueued reports whether a thread is queued.
160		*/
161	<	public void testIsQueued() {
162	<	final Mutex lock = new Mutex();
163	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
164	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
165	<	try {
166	<	assertFalse(lock.isQueued(t1));
167	<	assertFalse(lock.isQueued(t2));
168	<	lock.acquireExclusiveUninterruptibly(1);
169	<	t1.start();
170	<	Thread.sleep(SHORT_DELAY_MS);
171	<	assertTrue(lock.isQueued(t1));
172	<	t2.start();
173	<	Thread.sleep(SHORT_DELAY_MS);
174	<	assertTrue(lock.isQueued(t1));
175	<	assertTrue(lock.isQueued(t2));
176	<	t1.interrupt();
177	<	Thread.sleep(SHORT_DELAY_MS);
178	<	assertFalse(lock.isQueued(t1));
179	<	assertTrue(lock.isQueued(t2));
180	<	lock.releaseExclusive(1);
181	<	Thread.sleep(SHORT_DELAY_MS);
182	<	assertFalse(lock.isQueued(t1));
183	<	assertFalse(lock.isQueued(t2));
184	<	t1.join();
185	<	t2.join();
186	<	} catch(Exception e){
193	<	unexpectedException();
194	<	}
195	<	}
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 is none
190	<	*/
191	<	public void testGetFirstQueuedThread() {
192	<	final Mutex lock = new Mutex();
193	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
194	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
195	<	try {
196	<	assertNull(lock.getFirstQueuedThread());
197	<	lock.acquireExclusiveUninterruptibly(1);
198	<	t1.start();
199	<	Thread.sleep(SHORT_DELAY_MS);
200	<	assertEquals(t1, lock.getFirstQueuedThread());
201	<	t2.start();
202	<	Thread.sleep(SHORT_DELAY_MS);
203	<	assertEquals(t1, lock.getFirstQueuedThread());
204	<	t1.interrupt();
205	<	Thread.sleep(SHORT_DELAY_MS);
206	<	assertEquals(t2, lock.getFirstQueuedThread());
207	<	lock.releaseExclusive(1);
208	<	Thread.sleep(SHORT_DELAY_MS);
209	<	assertNull(lock.getFirstQueuedThread());
210	<	t1.join();
211	<	t2.join();
212	<	} catch(Exception e){
222	<	unexpectedException();
223	<	}
224	<	}
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() {
219	<	final Mutex lock = new Mutex();
220	<	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
221	<	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
222	<	try {
223	<	assertFalse(lock.hasContended());
224	<	lock.acquireExclusiveUninterruptibly(1);
225	<	t1.start();
226	<	Thread.sleep(SHORT_DELAY_MS);
227	<	assertTrue(lock.hasContended());
228	<	t2.start();
229	<	Thread.sleep(SHORT_DELAY_MS);
230	<	assertTrue(lock.hasContended());
231	<	t1.interrupt();
232	<	Thread.sleep(SHORT_DELAY_MS);
233	<	assertTrue(lock.hasContended());
234	<	lock.releaseExclusive(1);
235	<	Thread.sleep(SHORT_DELAY_MS);
236	<	assertTrue(lock.hasContended());
237	<	t1.join();
238	<	t2.join();
239	<	} catch(Exception e){
240	<	unexpectedException();
241	<	}
242	<	}
218	>	public void testHasContended() throws InterruptedException {
219	>	final Mutex sync = new Mutex();
220	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
221	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
222	>	assertFalse(sync.hasContended());
223	>	sync.acquire(1);
224	>	t1.start();
225	>	Thread.sleep(SHORT_DELAY_MS);
226	>	assertTrue(sync.hasContended());
227	>	t2.start();
228	>	Thread.sleep(SHORT_DELAY_MS);
229	>	assertTrue(sync.hasContended());
230	>	t1.interrupt();
231	>	Thread.sleep(SHORT_DELAY_MS);
232	>	assertTrue(sync.hasContended());
233	>	sync.release(1);
234	>	Thread.sleep(SHORT_DELAY_MS);
235	>	assertTrue(sync.hasContended());
236	>	t1.join();
237	>	t2.join();
238	>	}
239	>
240	>	/**
241	>	* getQueuedThreads includes waiting threads
242	>	*/
243	>	public void testGetQueuedThreads() throws InterruptedException {
244	>	final Mutex sync = new Mutex();
245	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
246	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
247	>	assertTrue(sync.getQueuedThreads().isEmpty());
248	>	sync.acquire(1);
249	>	assertTrue(sync.getQueuedThreads().isEmpty());
250	>	t1.start();
251	>	Thread.sleep(SHORT_DELAY_MS);
252	>	assertTrue(sync.getQueuedThreads().contains(t1));
253	>	t2.start();
254	>	Thread.sleep(SHORT_DELAY_MS);
255	>	assertTrue(sync.getQueuedThreads().contains(t1));
256	>	assertTrue(sync.getQueuedThreads().contains(t2));
257	>	t1.interrupt();
258	>	Thread.sleep(SHORT_DELAY_MS);
259	>	assertFalse(sync.getQueuedThreads().contains(t1));
260	>	assertTrue(sync.getQueuedThreads().contains(t2));
261	>	sync.release(1);
262	>	Thread.sleep(SHORT_DELAY_MS);
263	>	assertTrue(sync.getQueuedThreads().isEmpty());
264	>	t1.join();
265	>	t2.join();
266	>	}
267	>
268	>	/**
269	>	* getExclusiveQueuedThreads includes waiting threads
270	>	*/
271	>	public void testGetExclusiveQueuedThreads() throws InterruptedException {
272	>	final Mutex sync = new Mutex();
273	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
274	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
275	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
276	>	sync.acquire(1);
277	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
278	>	t1.start();
279	>	Thread.sleep(SHORT_DELAY_MS);
280	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
281	>	t2.start();
282	>	Thread.sleep(SHORT_DELAY_MS);
283	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t1));
284	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
285	>	t1.interrupt();
286	>	Thread.sleep(SHORT_DELAY_MS);
287	>	assertFalse(sync.getExclusiveQueuedThreads().contains(t1));
288	>	assertTrue(sync.getExclusiveQueuedThreads().contains(t2));
289	>	sync.release(1);
290	>	Thread.sleep(SHORT_DELAY_MS);
291	>	assertTrue(sync.getExclusiveQueuedThreads().isEmpty());
292	>	t1.join();
293	>	t2.join();
294	>	}
295	>
296	>	/**
297	>	* getSharedQueuedThreads does not include exclusively waiting threads
298	>	*/
299	>	public void testGetSharedQueuedThreads() throws InterruptedException {
300	>	final Mutex sync = new Mutex();
301	>	Thread t1 = new Thread(new InterruptedSyncRunnable(sync));
302	>	Thread t2 = new Thread(new InterruptibleSyncRunnable(sync));
303	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
304	>	sync.acquire(1);
305	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
306	>	t1.start();
307	>	Thread.sleep(SHORT_DELAY_MS);
308	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
309	>	t2.start();
310	>	Thread.sleep(SHORT_DELAY_MS);
311	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
312	>	t1.interrupt();
313	>	Thread.sleep(SHORT_DELAY_MS);
314	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
315	>	sync.release(1);
316	>	Thread.sleep(SHORT_DELAY_MS);
317	>	assertTrue(sync.getSharedQueuedThreads().isEmpty());
318	>	t1.join();
319	>	t2.join();
320	>	}
321	>
322	>	/**
323	>	* tryAcquireNanos is interruptible.
324	>	*/
325	>	public void testInterruptedException2() throws InterruptedException {
326	>	final Mutex sync = new Mutex();
327	>	sync.acquire(1);
328	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
329	>	public void realRun() throws InterruptedException {
330	>	sync.tryAcquireNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
331	>	}});
332
333	<	/**
334	<	* acquireExclusiveNanos is interruptible.
335	<	*/
259	<	public void testInterruptedException2() {
260	<	final Mutex lock = new Mutex();
261	<	lock.acquireExclusiveUninterruptibly(1);
262	<	Thread t = new Thread(new Runnable() {
263	<	public void run() {
264	<	try {
265	<	lock.acquireExclusiveNanos(1, MEDIUM_DELAY_MS * 1000 * 1000);
266	<	threadShouldThrow();
267	<	} catch(InterruptedException success){}
268	<	}
269	<	});
270	<	try {
271	<	t.start();
272	<	t.interrupt();
273	<	} catch(Exception e){
274	<	unexpectedException();
275	<	}
333	>	t.start();
334	>	t.interrupt();
335	>	t.join();
336		}
337
338
339		/**
340	<	* TryAcquireExclusive on a locked lock fails
340	>	* TryAcquire on exclusively held sync fails
341		*/
342	<	public void testTryAcquireExclusiveWhenLocked() {
343	<	final Mutex lock = new Mutex();
344	<	lock.acquireExclusiveUninterruptibly(1);
345	<	Thread t = new Thread(new Runnable() {
346	<	public void run() {
347	<	threadAssertFalse(lock.tryAcquireExclusive(1));
348	<	}
349	<	});
350	<	try {
351	<	t.start();
352	<	t.join();
353	<	lock.releaseExclusive(1);
294	<	} catch(Exception e){
295	<	unexpectedException();
296	<	}
297	<	}
342	>	public void testTryAcquireWhenSynced() throws InterruptedException {
343	>	final Mutex sync = new Mutex();
344	>	sync.acquire(1);
345	>	Thread t = new Thread(new CheckedRunnable() {
346	>	public void realRun() {
347	>	threadAssertFalse(sync.tryAcquire(1));
348	>	}});
349	>
350	>	t.start();
351	>	t.join();
352	>	sync.release(1);
353	>	}
354
355		/**
356	<	* acquireExclusiveNanos on a locked lock times out
356	>	* tryAcquireNanos on an exclusively held sync times out
357		*/
358	<	public void testAcquireExclusiveNanos_Timeout() {
359	<	final Mutex lock = new Mutex();
360	<	lock.acquireExclusiveUninterruptibly(1);
361	<	Thread t = new Thread(new Runnable() {
362	<	public void run() {
363	<	try {
364	<	threadAssertFalse(lock.acquireExclusiveNanos(1, 1000 * 1000));
365	<	} catch (Exception ex) {
366	<	threadUnexpectedException();
367	<	}
368	<	}
369	<	});
370	<	try {
371	<	t.start();
316	<	t.join();
317	<	lock.releaseExclusive(1);
318	<	} catch(Exception e){
319	<	unexpectedException();
320	<	}
321	<	}
322	<
323	<
358	>	public void testAcquireNanos_Timeout() throws InterruptedException {
359	>	final Mutex sync = new Mutex();
360	>	sync.acquire(1);
361	>	Thread t = new Thread(new CheckedRunnable() {
362	>	public void realRun() throws InterruptedException {
363	>	threadAssertFalse(sync.tryAcquireNanos(1, 1000 * 1000));
364	>	}});
365	>
366	>	t.start();
367	>	t.join();
368	>	sync.release(1);
369	>	}
370	>
371	>
372		/**
373		* getState is true when acquired and false when not
374		*/
375	<	public void testGetState() {
376	<	final Mutex lock = new Mutex();
377	<	lock.acquireExclusiveUninterruptibly(1);
378	<	assertTrue(lock.isLocked());
379	<	lock.releaseExclusive(1);
380	<	assertFalse(lock.isLocked());
381	<	Thread t = new Thread(new Runnable() {
382	<	public void run() {
383	<	lock.acquireExclusiveUninterruptibly(1);
384	<	try {
385	<	Thread.sleep(SMALL_DELAY_MS);
386	<	}
387	<	catch(Exception e) {
388	<	threadUnexpectedException();
389	<	}
390	<	lock.releaseExclusive(1);
391	<	}
392	<	});
345	<	try {
346	<	t.start();
347	<	Thread.sleep(SHORT_DELAY_MS);
348	<	assertTrue(lock.isLocked());
349	<	t.join();
350	<	assertFalse(lock.isLocked());
351	<	} catch(Exception e){
352	<	unexpectedException();
353	<	}
375	>	public void testGetState() throws InterruptedException {
376	>	final Mutex sync = new Mutex();
377	>	sync.acquire(1);
378	>	assertTrue(sync.isHeldExclusively());
379	>	sync.release(1);
380	>	assertFalse(sync.isHeldExclusively());
381	>	Thread t = new Thread(new CheckedRunnable() {
382	>	public void realRun() throws InterruptedException {
383	>	sync.acquire(1);
384	>	Thread.sleep(SMALL_DELAY_MS);
385	>	sync.release(1);
386	>	}});
387	>
388	>	t.start();
389	>	Thread.sleep(SHORT_DELAY_MS);
390	>	assertTrue(sync.isHeldExclusively());
391	>	t.join();
392	>	assertFalse(sync.isHeldExclusively());
393		}
394
395
396		/**
397	<	* acquireExclusiveInterruptibly is interruptible.
397	>	* acquireInterruptibly is interruptible.
398		*/
399	<	public void testAcquireInterruptibly1() {
400	<	final Mutex lock = new Mutex();
401	<	lock.acquireExclusiveUninterruptibly(1);
402	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
403	<	try {
404	<	t.start();
405	<	t.interrupt();
406	<	lock.releaseExclusive(1);
407	<	t.join();
408	<	} catch(Exception e){
409	<	unexpectedException();
410	<	}
372	<	}
399	>	public void testAcquireInterruptibly1() throws InterruptedException {
400	>	final Mutex sync = new Mutex();
401	>	sync.acquire(1);
402	>	Thread t = new Thread(new InterruptedSyncRunnable(sync));
403	>
404	>	t.start();
405	>	Thread.sleep(SHORT_DELAY_MS);
406	>	t.interrupt();
407	>	Thread.sleep(SHORT_DELAY_MS);
408	>	sync.release(1);
409	>	t.join();
410	>	}
411
412		/**
413	<	* acquireExclusiveInterruptibly succeeds when released, else is interruptible
413	>	* acquireInterruptibly succeeds when released, else is interruptible
414		*/
415	<	public void testAcquireInterruptibly2() {
416	<	final Mutex lock = new Mutex();
417	<	try {
418	<	lock.acquireExclusiveInterruptibly(1);
419	<	} catch(Exception e) {
420	<	unexpectedException();
421	<	}
422	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
385	<	try {
386	<	t.start();
387	<	t.interrupt();
388	<	assertTrue(lock.isLocked());
389	<	t.join();
390	<	} catch(Exception e){
391	<	unexpectedException();
392	<	}
415	>	public void testAcquireInterruptibly2() throws InterruptedException {
416	>	final Mutex sync = new Mutex();
417	>	sync.acquireInterruptibly(1);
418	>	Thread t = new Thread(new InterruptedSyncRunnable(sync));
419	>	t.start();
420	>	t.interrupt();
421	>	assertTrue(sync.isHeldExclusively());
422	>	t.join();
423		}
424
425		/**
426	<	* owns is true for a condition created by lock else false
426	>	* owns is true for a condition created by sync else false
427		*/
428		public void testOwns() {
429	<	final Mutex lock = new Mutex();
430	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
431	<	final Mutex lock2 = new Mutex();
432	<	assertTrue(lock.owns(c));
433	<	assertFalse(lock2.owns(c));
429	>	final Mutex sync = new Mutex();
430	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
431	>	final Mutex sync2 = new Mutex();
432	>	assertTrue(sync.owns(c));
433	>	assertFalse(sync2.owns(c));
434		}
435
436		/**
437	<	* Calling await without holding lock throws IllegalMonitorStateException
437	>	* Calling await without holding sync throws IllegalMonitorStateException
438		*/
439	<	public void testAwait_IllegalMonitor() {
440	<	final Mutex lock = new Mutex();
441	<	final Condition c = lock.newCondition();
439	>	public void testAwait_IllegalMonitor() throws InterruptedException {
440	>	final Mutex sync = new Mutex();
441	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
442		try {
443		c.await();
444		shouldThrow();
445	<	}
416	<	catch (IllegalMonitorStateException success) {
417	<	}
418	<	catch (Exception ex) {
419	<	unexpectedException();
420	<	}
445	>	} catch (IllegalMonitorStateException success) {}
446		}
447
448		/**
449	<	* Calling signal without holding lock throws IllegalMonitorStateException
449	>	* Calling signal without holding sync throws IllegalMonitorStateException
450		*/
451		public void testSignal_IllegalMonitor() {
452	<	final Mutex lock = new Mutex();
453	<	final Condition c = lock.newCondition();
452	>	final Mutex sync = new Mutex();
453	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
454		try {
455		c.signal();
456		shouldThrow();
457	<	}
433	<	catch (IllegalMonitorStateException success) {
434	<	}
435	<	catch (Exception ex) {
436	<	unexpectedException();
437	<	}
457	>	} catch (IllegalMonitorStateException success) {}
458		}
459
460		/**
461		* awaitNanos without a signal times out
462		*/
463	<	public void testAwaitNanos_Timeout() {
464	<	final Mutex lock = new Mutex();
465	<	final Condition c = lock.newCondition();
466	<	try {
467	<	lock.acquireExclusiveUninterruptibly(1);
468	<	long t = c.awaitNanos(100);
469	<	assertTrue(t <= 0);
450	<	lock.releaseExclusive(1);
451	<	}
452	<	catch (Exception ex) {
453	<	unexpectedException();
454	<	}
463	>	public void testAwaitNanos_Timeout() throws InterruptedException {
464	>	final Mutex sync = new Mutex();
465	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
466	>	sync.acquire(1);
467	>	long t = c.awaitNanos(100);
468	>	assertTrue(t <= 0);
469	>	sync.release(1);
470		}
471
472		/**
473	<	*  timed await without a signal times out
474	<	*/
475	<	public void testAwait_Timeout() {
476	<	final Mutex lock = new Mutex();
477	<	final Condition c = lock.newCondition();
478	<	try {
479	<	lock.acquireExclusiveUninterruptibly(1);
480	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
466	<	lock.releaseExclusive(1);
467	<	}
468	<	catch (Exception ex) {
469	<	unexpectedException();
470	<	}
473	>	*  Timed await without a signal times out
474	>	*/
475	>	public void testAwait_Timeout() throws InterruptedException {
476	>	final Mutex sync = new Mutex();
477	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
478	>	sync.acquire(1);
479	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
480	>	sync.release(1);
481		}
482
483		/**
484		* awaitUntil without a signal times out
485		*/
486	<	public void testAwaitUntil_Timeout() {
487	<	final Mutex lock = new Mutex();
488	<	final Condition c = lock.newCondition();
489	<	try {
490	<	lock.acquireExclusiveUninterruptibly(1);
491	<	java.util.Date d = new java.util.Date();
492	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
483	<	lock.releaseExclusive(1);
484	<	}
485	<	catch (Exception ex) {
486	<	unexpectedException();
487	<	}
486	>	public void testAwaitUntil_Timeout() throws InterruptedException {
487	>	final Mutex sync = new Mutex();
488	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
489	>	sync.acquire(1);
490	>	java.util.Date d = new java.util.Date();
491	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
492	>	sync.release(1);
493		}
494
495		/**
496		* await returns when signalled
497		*/
498	<	public void testAwait() {
499	<	final Mutex lock = new Mutex();
500	<	final Condition c = lock.newCondition();
501	<	Thread t = new Thread(new Runnable() {
502	<	public void run() {
503	<	try {
504	<	lock.acquireExclusiveUninterruptibly(1);
505	<	c.await();
506	<	lock.releaseExclusive(1);
507	<	}
508	<	catch(InterruptedException e) {
509	<	threadUnexpectedException();
510	<	}
511	<	}
512	<	});
513	<
514	<	try {
510	<	t.start();
511	<	Thread.sleep(SHORT_DELAY_MS);
512	<	lock.acquireExclusiveUninterruptibly(1);
513	<	c.signal();
514	<	lock.releaseExclusive(1);
515	<	t.join(SHORT_DELAY_MS);
516	<	assertFalse(t.isAlive());
517	<	}
518	<	catch (Exception ex) {
519	<	unexpectedException();
520	<	}
498	>	public void testAwait() throws InterruptedException {
499	>	final Mutex sync = new Mutex();
500	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
501	>	Thread t = new Thread(new CheckedRunnable() {
502	>	public void realRun() throws InterruptedException {
503	>	sync.acquire(1);
504	>	c.await();
505	>	sync.release(1);
506	>	}});
507	>
508	>	t.start();
509	>	Thread.sleep(SHORT_DELAY_MS);
510	>	sync.acquire(1);
511	>	c.signal();
512	>	sync.release(1);
513	>	t.join(SHORT_DELAY_MS);
514	>	assertFalse(t.isAlive());
515		}
516
517
518	+
519		/**
520	<	* Latch isSignalled initially returns false, then true after release
520	>	* hasWaiters throws NPE if null
521		*/
522	<	public void testLatchIsSignalled() {
523	<	final BooleanLatch l = new BooleanLatch();
524	<	assertFalse(l.isSignalled());
525	<	l.releaseShared(0);
526	<	assertTrue(l.isSignalled());
522	>	public void testHasWaitersNPE() {
523	>	final Mutex sync = new Mutex();
524	>	try {
525	>	sync.hasWaiters(null);
526	>	shouldThrow();
527	>	} catch (NullPointerException success) {}
528		}
529
530		/**
531	<	* release and has no effect when already signalled
531	>	* getWaitQueueLength throws NPE if null
532	>	*/
533	>	public void testGetWaitQueueLengthNPE() {
534	>	final Mutex sync = new Mutex();
535	>	try {
536	>	sync.getWaitQueueLength(null);
537	>	shouldThrow();
538	>	} catch (NullPointerException success) {}
539	>	}
540	>
541	>
542	>	/**
543	>	* getWaitingThreads throws NPE if null
544	>	*/
545	>	public void testGetWaitingThreadsNPE() {
546	>	final Mutex sync = new Mutex();
547	>	try {
548	>	sync.getWaitingThreads(null);
549	>	shouldThrow();
550	>	} catch (NullPointerException success) {}
551	>	}
552	>
553	>
554	>	/**
555	>	* hasWaiters throws IAE if not owned
556	>	*/
557	>	public void testHasWaitersIAE() {
558	>	final Mutex sync = new Mutex();
559	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
560	>	final Mutex sync2 = new Mutex();
561	>	try {
562	>	sync2.hasWaiters(c);
563	>	shouldThrow();
564	>	} catch (IllegalArgumentException success) {}
565	>	}
566	>
567	>	/**
568	>	* hasWaiters throws IMSE if not synced
569	>	*/
570	>	public void testHasWaitersIMSE() {
571	>	final Mutex sync = new Mutex();
572	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
573	>	try {
574	>	sync.hasWaiters(c);
575	>	shouldThrow();
576	>	} catch (IllegalMonitorStateException success) {}
577	>	}
578	>
579	>
580	>	/**
581	>	* getWaitQueueLength throws IAE if not owned
582	>	*/
583	>	public void testGetWaitQueueLengthIAE() {
584	>	final Mutex sync = new Mutex();
585	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
586	>	final Mutex sync2 = new Mutex();
587	>	try {
588	>	sync2.getWaitQueueLength(c);
589	>	shouldThrow();
590	>	} catch (IllegalArgumentException success) {}
591	>	}
592	>
593	>	/**
594	>	* getWaitQueueLength throws IMSE if not synced
595	>	*/
596	>	public void testGetWaitQueueLengthIMSE() {
597	>	final Mutex sync = new Mutex();
598	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
599	>	try {
600	>	sync.getWaitQueueLength(c);
601	>	shouldThrow();
602	>	} catch (IllegalMonitorStateException success) {}
603	>	}
604	>
605	>
606	>	/**
607	>	* getWaitingThreads throws IAE if not owned
608	>	*/
609	>	public void testGetWaitingThreadsIAE() {
610	>	final Mutex sync = new Mutex();
611	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
612	>	final Mutex sync2 = new Mutex();
613	>	try {
614	>	sync2.getWaitingThreads(c);
615	>	shouldThrow();
616	>	} catch (IllegalArgumentException success) {}
617	>	}
618	>
619	>	/**
620	>	* getWaitingThreads throws IMSE if not synced
621	>	*/
622	>	public void testGetWaitingThreadsIMSE() {
623	>	final Mutex sync = new Mutex();
624	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
625	>	try {
626	>	sync.getWaitingThreads(c);
627	>	shouldThrow();
628	>	} catch (IllegalMonitorStateException success) {}
629	>	}
630	>
631	>
632	>
633	>	/**
634	>	* hasWaiters returns true when a thread is waiting, else false
635	>	*/
636	>	public void testHasWaiters() throws InterruptedException {
637	>	final Mutex sync = new Mutex();
638	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
639	>	Thread t = new Thread(new CheckedRunnable() {
640	>	public void realRun() throws InterruptedException {
641	>	sync.acquire(1);
642	>	threadAssertFalse(sync.hasWaiters(c));
643	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
644	>	c.await();
645	>	sync.release(1);
646	>	}});
647	>
648	>	t.start();
649	>	Thread.sleep(SHORT_DELAY_MS);
650	>	sync.acquire(1);
651	>	assertTrue(sync.hasWaiters(c));
652	>	assertEquals(1, sync.getWaitQueueLength(c));
653	>	c.signal();
654	>	sync.release(1);
655	>	Thread.sleep(SHORT_DELAY_MS);
656	>	sync.acquire(1);
657	>	assertFalse(sync.hasWaiters(c));
658	>	assertEquals(0, sync.getWaitQueueLength(c));
659	>	sync.release(1);
660	>	t.join(SHORT_DELAY_MS);
661	>	assertFalse(t.isAlive());
662	>	}
663	>
664	>	/**
665	>	* getWaitQueueLength returns number of waiting threads
666	>	*/
667	>	public void testGetWaitQueueLength() throws InterruptedException {
668	>	final Mutex sync = new Mutex();
669	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
670	>	Thread t1 = new Thread(new CheckedRunnable() {
671	>	public void realRun() throws InterruptedException {
672	>	sync.acquire(1);
673	>	threadAssertFalse(sync.hasWaiters(c));
674	>	threadAssertEquals(0, sync.getWaitQueueLength(c));
675	>	c.await();
676	>	sync.release(1);
677	>	}});
678	>
679	>	Thread t2 = new Thread(new CheckedRunnable() {
680	>	public void realRun() throws InterruptedException {
681	>	sync.acquire(1);
682	>	threadAssertTrue(sync.hasWaiters(c));
683	>	threadAssertEquals(1, sync.getWaitQueueLength(c));
684	>	c.await();
685	>	sync.release(1);
686	>	}});
687	>
688	>	t1.start();
689	>	Thread.sleep(SHORT_DELAY_MS);
690	>	t2.start();
691	>	Thread.sleep(SHORT_DELAY_MS);
692	>	sync.acquire(1);
693	>	assertTrue(sync.hasWaiters(c));
694	>	assertEquals(2, sync.getWaitQueueLength(c));
695	>	c.signalAll();
696	>	sync.release(1);
697	>	Thread.sleep(SHORT_DELAY_MS);
698	>	sync.acquire(1);
699	>	assertFalse(sync.hasWaiters(c));
700	>	assertEquals(0, sync.getWaitQueueLength(c));
701	>	sync.release(1);
702	>	t1.join(SHORT_DELAY_MS);
703	>	t2.join(SHORT_DELAY_MS);
704	>	assertFalse(t1.isAlive());
705	>	assertFalse(t2.isAlive());
706	>	}
707	>
708	>	/**
709	>	* getWaitingThreads returns only and all waiting threads
710	>	*/
711	>	public void testGetWaitingThreads() throws InterruptedException {
712	>	final Mutex sync = new Mutex();
713	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
714	>	Thread t1 = new Thread(new CheckedRunnable() {
715	>	public void realRun() throws InterruptedException {
716	>	sync.acquire(1);
717	>	threadAssertTrue(sync.getWaitingThreads(c).isEmpty());
718	>	c.await();
719	>	sync.release(1);
720	>	}});
721	>
722	>	Thread t2 = new Thread(new CheckedRunnable() {
723	>	public void realRun() throws InterruptedException {
724	>	sync.acquire(1);
725	>	threadAssertFalse(sync.getWaitingThreads(c).isEmpty());
726	>	c.await();
727	>	sync.release(1);
728	>	}});
729	>
730	>	sync.acquire(1);
731	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
732	>	sync.release(1);
733	>	t1.start();
734	>	Thread.sleep(SHORT_DELAY_MS);
735	>	t2.start();
736	>	Thread.sleep(SHORT_DELAY_MS);
737	>	sync.acquire(1);
738	>	assertTrue(sync.hasWaiters(c));
739	>	assertTrue(sync.getWaitingThreads(c).contains(t1));
740	>	assertTrue(sync.getWaitingThreads(c).contains(t2));
741	>	c.signalAll();
742	>	sync.release(1);
743	>	Thread.sleep(SHORT_DELAY_MS);
744	>	sync.acquire(1);
745	>	assertFalse(sync.hasWaiters(c));
746	>	assertTrue(sync.getWaitingThreads(c).isEmpty());
747	>	sync.release(1);
748	>	t1.join(SHORT_DELAY_MS);
749	>	t2.join(SHORT_DELAY_MS);
750	>	assertFalse(t1.isAlive());
751	>	assertFalse(t2.isAlive());
752	>	}
753	>
754	>
755	>
756	>	/**
757	>	* awaitUninterruptibly doesn't abort on interrupt
758	>	*/
759	>	public void testAwaitUninterruptibly() throws InterruptedException {
760	>	final Mutex sync = new Mutex();
761	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
762	>	Thread t = new Thread(new CheckedRunnable() {
763	>	public void realRun() {
764	>	sync.acquire(1);
765	>	c.awaitUninterruptibly();
766	>	sync.release(1);
767	>	}});
768	>
769	>	t.start();
770	>	Thread.sleep(SHORT_DELAY_MS);
771	>	t.interrupt();
772	>	sync.acquire(1);
773	>	c.signal();
774	>	sync.release(1);
775	>	t.join(SHORT_DELAY_MS);
776	>	assertFalse(t.isAlive());
777	>	}
778	>
779	>	/**
780	>	* await is interruptible
781	>	*/
782	>	public void testAwait_Interrupt() throws InterruptedException {
783	>	final Mutex sync = new Mutex();
784	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
785	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
786	>	public void realRun() throws InterruptedException {
787	>	sync.acquire(1);
788	>	c.await();
789	>	}});
790	>
791	>	t.start();
792	>	Thread.sleep(SHORT_DELAY_MS);
793	>	t.interrupt();
794	>	t.join(SHORT_DELAY_MS);
795	>	assertFalse(t.isAlive());
796	>	}
797	>
798	>	/**
799	>	* awaitNanos is interruptible
800	>	*/
801	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
802	>	final Mutex sync = new Mutex();
803	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
804	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
805	>	public void realRun() throws InterruptedException {
806	>	sync.acquire(1);
807	>	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
808	>	}});
809	>
810	>	t.start();
811	>	Thread.sleep(SHORT_DELAY_MS);
812	>	t.interrupt();
813	>	t.join(SHORT_DELAY_MS);
814	>	assertFalse(t.isAlive());
815	>	}
816	>
817	>	/**
818	>	* awaitUntil is interruptible
819	>	*/
820	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
821	>	final Mutex sync = new Mutex();
822	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
823	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
824	>	public void realRun() throws InterruptedException {
825	>	sync.acquire(1);
826	>	java.util.Date d = new java.util.Date();
827	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
828	>	}});
829	>
830	>	t.start();
831	>	Thread.sleep(SHORT_DELAY_MS);
832	>	t.interrupt();
833	>	t.join(SHORT_DELAY_MS);
834	>	assertFalse(t.isAlive());
835	>	}
836	>
837	>	/**
838	>	* signalAll wakes up all threads
839	>	*/
840	>	public void testSignalAll() throws InterruptedException {
841	>	final Mutex sync = new Mutex();
842	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
843	>	Thread t1 = new Thread(new CheckedRunnable() {
844	>	public void realRun() throws InterruptedException {
845	>	sync.acquire(1);
846	>	c.await();
847	>	sync.release(1);
848	>	}});
849	>
850	>	Thread t2 = new Thread(new CheckedRunnable() {
851	>	public void realRun() throws InterruptedException {
852	>	sync.acquire(1);
853	>	c.await();
854	>	sync.release(1);
855	>	}});
856	>
857	>	t1.start();
858	>	t2.start();
859	>	Thread.sleep(SHORT_DELAY_MS);
860	>	sync.acquire(1);
861	>	c.signalAll();
862	>	sync.release(1);
863	>	t1.join(SHORT_DELAY_MS);
864	>	t2.join(SHORT_DELAY_MS);
865	>	assertFalse(t1.isAlive());
866	>	assertFalse(t2.isAlive());
867	>	}
868	>
869	>
870	>	/**
871	>	* toString indicates current state
872	>	*/
873	>	public void testToString() {
874	>	Mutex sync = new Mutex();
875	>	String us = sync.toString();
876	>	assertTrue(us.indexOf("State = 0") >= 0);
877	>	sync.acquire(1);
878	>	String ls = sync.toString();
879	>	assertTrue(ls.indexOf("State = 1") >= 0);
880	>	}
881	>
882	>	/**
883	>	* A serialized AQS deserializes with current state
884	>	*/
885	>	public void testSerialization() throws Exception {
886	>	Mutex l = new Mutex();
887	>	l.acquire(1);
888	>	assertTrue(l.isHeldExclusively());
889	>
890	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
891	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
892	>	out.writeObject(l);
893	>	out.close();
894	>
895	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
896	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
897	>	Mutex r = (Mutex) in.readObject();
898	>	assertTrue(r.isHeldExclusively());
899	>	}
900	>
901	>
902	>	/**
903	>	* tryReleaseShared setting state changes getState
904	>	*/
905	>	public void testGetStateWithReleaseShared() {
906	>	final BooleanLatch l = new BooleanLatch();
907	>	assertFalse(l.isSignalled());
908	>	l.releaseShared(0);
909	>	assertTrue(l.isSignalled());
910	>	}
911	>
912	>	/**
913	>	* releaseShared has no effect when already signalled
914		*/
915		public void testReleaseShared() {
916	<	final BooleanLatch l = new BooleanLatch();
917	<	assertFalse(l.isSignalled());
918	<	l.releaseShared(0);
919	<	assertTrue(l.isSignalled());
920	<	l.releaseShared(0);
921	<	assertTrue(l.isSignalled());
916	>	final BooleanLatch l = new BooleanLatch();
917	>	assertFalse(l.isSignalled());
918	>	l.releaseShared(0);
919	>	assertTrue(l.isSignalled());
920	>	l.releaseShared(0);
921	>	assertTrue(l.isSignalled());
922		}
923
924		/**
925		* acquireSharedInterruptibly returns after release, but not before
926		*/
927	<	public void testAcquireSharedInterruptibly() {
928	<	final BooleanLatch l = new BooleanLatch();
927	>	public void testAcquireSharedInterruptibly() throws InterruptedException {
928	>	final BooleanLatch l = new BooleanLatch();
929
930	<	Thread t = new Thread(new Runnable() {
931	<	public void run() {
932	<	try {
933	<	threadAssertFalse(l.isSignalled());
934	<	l.acquireSharedInterruptibly(0);
935	<	threadAssertTrue(l.isSignalled());
936	<	} catch(InterruptedException e){
937	<	threadUnexpectedException();
938	<	}
939	<	}
940	<	});
941	<	try {
942	<	t.start();
565	<	assertFalse(l.isSignalled());
566	<	Thread.sleep(SHORT_DELAY_MS);
567	<	l.releaseShared(0);
568	<	assertTrue(l.isSignalled());
569	<	t.join();
570	<	} catch (InterruptedException e){
571	<	unexpectedException();
572	<	}
930	>	Thread t = new Thread(new CheckedRunnable() {
931	>	public void realRun() throws InterruptedException {
932	>	threadAssertFalse(l.isSignalled());
933	>	l.acquireSharedInterruptibly(0);
934	>	threadAssertTrue(l.isSignalled());
935	>	}});
936	>
937	>	t.start();
938	>	assertFalse(l.isSignalled());
939	>	Thread.sleep(SHORT_DELAY_MS);
940	>	l.releaseShared(0);
941	>	assertTrue(l.isSignalled());
942	>	t.join();
943		}
944	<
944	>
945
946		/**
947		* acquireSharedTimed returns after release
948		*/
949	<	public void testAsquireSharedTimed() {
950	<	final BooleanLatch l = new BooleanLatch();
949	>	public void testAsquireSharedTimed() throws InterruptedException {
950	>	final BooleanLatch l = new BooleanLatch();
951
952	<	Thread t = new Thread(new Runnable() {
953	<	public void run() {
954	<	try {
955	<	threadAssertFalse(l.isSignalled());
956	<	threadAssertTrue(l.acquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
957	<	threadAssertTrue(l.isSignalled());
958	<
959	<	} catch(InterruptedException e){
960	<	threadUnexpectedException();
961	<	}
962	<	}
963	<	});
964	<	try {
595	<	t.start();
596	<	assertFalse(l.isSignalled());
597	<	Thread.sleep(SHORT_DELAY_MS);
598	<	l.releaseShared(0);
599	<	assertTrue(l.isSignalled());
600	<	t.join();
601	<	} catch (InterruptedException e){
602	<	unexpectedException();
603	<	}
952	>	Thread t = new Thread(new CheckedRunnable() {
953	>	public void realRun() throws InterruptedException {
954	>	threadAssertFalse(l.isSignalled());
955	>	threadAssertTrue(l.tryAcquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
956	>	threadAssertTrue(l.isSignalled());
957	>	}});
958	>
959	>	t.start();
960	>	assertFalse(l.isSignalled());
961	>	Thread.sleep(SHORT_DELAY_MS);
962	>	l.releaseShared(0);
963	>	assertTrue(l.isSignalled());
964	>	t.join();
965		}
966	<
966	>
967		/**
968		* acquireSharedInterruptibly throws IE if interrupted before released
969		*/
970	<	public void testAcquireSharedInterruptibly_InterruptedException() {
970	>	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
971		final BooleanLatch l = new BooleanLatch();
972	<	Thread t = new Thread(new Runnable() {
973	<	public void run() {
974	<	try {
975	<	threadAssertFalse(l.isSignalled());
976	<	l.acquireSharedInterruptibly(0);
977	<	threadShouldThrow();
978	<	} catch(InterruptedException success){}
979	<	}
980	<	});
981	<	t.start();
621	<	try {
622	<	assertFalse(l.isSignalled());
623	<	t.interrupt();
624	<	t.join();
625	<	} catch (InterruptedException e){
626	<	unexpectedException();
627	<	}
972	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
973	>	public void realRun() throws InterruptedException {
974	>	threadAssertFalse(l.isSignalled());
975	>	l.acquireSharedInterruptibly(0);
976	>	}});
977	>
978	>	t.start();
979	>	assertFalse(l.isSignalled());
980	>	t.interrupt();
981	>	t.join();
982		}
983
984		/**
985		* acquireSharedTimed throws IE if interrupted before released
986		*/
987	<	public void testAcquireSharedNanos_InterruptedException() {
987	>	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
988		final BooleanLatch l = new BooleanLatch();
989	<	Thread t = new Thread(new Runnable() {
990	<	public void run() {
991	<	try {
992	<	threadAssertFalse(l.isSignalled());
993	<	l.acquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
994	<	threadShouldThrow();
995	<	} catch(InterruptedException success){}
996	<	}
997	<	});
998	<	t.start();
999	<	try {
646	<	Thread.sleep(SHORT_DELAY_MS);
647	<	assertFalse(l.isSignalled());
648	<	t.interrupt();
649	<	t.join();
650	<	} catch (InterruptedException e){
651	<	unexpectedException();
652	<	}
989	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
990	>	public void realRun() throws InterruptedException {
991	>	threadAssertFalse(l.isSignalled());
992	>	l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
993	>	}});
994	>
995	>	t.start();
996	>	Thread.sleep(SHORT_DELAY_MS);
997	>	assertFalse(l.isSignalled());
998	>	t.interrupt();
999	>	t.join();
1000		}
1001
1002		/**
1003		* acquireSharedTimed times out if not released before timeout
1004		*/
1005	<	public void testAcquireSharedNanos_Timeout() {
1005	>	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1006		final BooleanLatch l = new BooleanLatch();
1007	<	Thread t = new Thread(new Runnable() {
1008	<	public void run() {
1009	<	try {
1010	<	threadAssertFalse(l.isSignalled());
1011	<	threadAssertFalse(l.acquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1012	<	} catch(InterruptedException ie){
1013	<	threadUnexpectedException();
1014	<	}
1015	<	}
1016	<	});
670	<	t.start();
671	<	try {
672	<	Thread.sleep(SHORT_DELAY_MS);
673	<	assertFalse(l.isSignalled());
674	<	t.join();
675	<	} catch (InterruptedException e){
676	<	unexpectedException();
677	<	}
1007	>	Thread t = new Thread(new CheckedRunnable() {
1008	>	public void realRun() throws InterruptedException {
1009	>	threadAssertFalse(l.isSignalled());
1010	>	threadAssertFalse(l.tryAcquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1011	>	}});
1012	>
1013	>	t.start();
1014	>	Thread.sleep(SHORT_DELAY_MS);
1015	>	assertFalse(l.isSignalled());
1016	>	t.join();
1017		}
1018	<
1018	>
1019		}

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