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Comparing jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java (file contents):
Revision 1.12 by dl, Fri Jan 9 14:45:58 2004 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 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 * 1000L * 1000L);
331	>	}});
332	>
333	>	t.start();
334	>	Thread.sleep(SHORT_DELAY_MS);
335	>	t.interrupt();
336	>	t.join();
337	>	}
338	>
339
340		/**
341	<	* timed tryAcquireExclusive is interruptible.
341	>	* TryAcquire on exclusively held sync fails
342		*/
343	<	public void testInterruptedException2() {
344	<	final Mutex lock = new Mutex();
345	<	lock.acquireExclusiveUninterruptibly(1);
346	<	Thread t = new Thread(new Runnable() {
347	<	public void run() {
348	<	try {
349	<	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	<	}
276	<	}
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	<	* TryAcquireExclusive on a locked lock fails
357	>	* tryAcquireNanos on an exclusively held sync times out
358		*/
359	<	public void testTryAcquireExclusiveWhenLocked() {
360	<	final Mutex lock = new Mutex();
361	<	lock.acquireExclusiveUninterruptibly(1);
362	<	Thread t = new Thread(new Runnable() {
363	<	public void run() {
364	<	threadAssertFalse(lock.tryAcquireExclusive(1));
365	<	}
366	<	});
367	<	try {
368	<	t.start();
369	<	t.join();
370	<	lock.releaseExclusive(1);
371	<	} catch(Exception e){
295	<	unexpectedException();
296	<	}
297	<	}
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	<	* acquireExclusiveTimed on a locked lock times out
374	>	* getState is true when acquired and false when not
375		*/
376	<	public void testacquireExclusiveTimed_Timeout() {
377	<	final Mutex lock = new Mutex();
378	<	lock.acquireExclusiveUninterruptibly(1);
379	<	Thread t = new Thread(new Runnable() {
380	<	public void run() {
381	<	try {
382	<	threadAssertFalse(lock.acquireExclusiveNanos(1, 1000 * 1000));
383	<	} catch (Exception ex) {
384	<	threadUnexpectedException();
385	<	}
386	<	}
387	<	});
388	<	try {
389	<	t.start();
390	<	t.join();
391	<	lock.releaseExclusive(1);
392	<	} catch(Exception e){
393	<	unexpectedException();
320	<	}
321	<	}
322	<
323	<
324	<	/**
325	<	* isLocked is true when locked and false when not
326	<	*/
327	<	public void testIsLocked() {
328	<	final Mutex lock = new Mutex();
329	<	lock.acquireExclusiveUninterruptibly(1);
330	<	assertTrue(lock.isLocked());
331	<	lock.releaseExclusive(1);
332	<	assertFalse(lock.isLocked());
333	<	Thread t = new Thread(new Runnable() {
334	<	public void run() {
335	<	lock.acquireExclusiveUninterruptibly(1);
336	<	try {
337	<	Thread.sleep(SMALL_DELAY_MS);
338	<	}
339	<	catch(Exception e) {
340	<	threadUnexpectedException();
341	<	}
342	<	lock.releaseExclusive(1);
343	<	}
344	<	});
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	<	}
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	<	* acquireExclusiveInterruptibly is interruptible.
398	>	* acquireInterruptibly is interruptible.
399		*/
400	<	public void testAcquireInterruptibly1() {
401	<	final Mutex lock = new Mutex();
402	<	lock.acquireExclusiveUninterruptibly(1);
403	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
404	<	try {
405	<	t.start();
406	<	t.interrupt();
407	<	lock.releaseExclusive(1);
408	<	t.join();
409	<	} catch(Exception e){
410	<	unexpectedException();
411	<	}
372	<	}
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	<	* acquireExclusiveInterruptibly succeeds when released, else is interruptible
414	>	* acquireInterruptibly succeeds when released, else is interruptible
415		*/
416	<	public void testAcquireInterruptibly2() {
417	<	final Mutex lock = new Mutex();
418	<	try {
419	<	lock.acquireExclusiveInterruptibly(1);
420	<	} catch(Exception e) {
421	<	unexpectedException();
422	<	}
423	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
424	<	try {
386	<	t.start();
387	<	t.interrupt();
388	<	assertTrue(lock.isLocked());
389	<	t.join();
390	<	} catch(Exception e){
391	<	unexpectedException();
392	<	}
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 lock else false
428	>	* owns is true for a condition created by sync else false
429		*/
430		public void testOwns() {
431	<	final Mutex lock = new Mutex();
432	<	final AbstractQueuedSynchronizer.ConditionObject c = lock.newCondition();
433	<	final Mutex lock2 = new Mutex();
434	<	assertTrue(lock.owns(c));
435	<	assertFalse(lock2.owns(c));
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 lock throws IllegalMonitorStateException
439	>	* Calling await without holding sync throws IllegalMonitorStateException
440		*/
441	<	public void testAwait_IllegalMonitor() {
442	<	final Mutex lock = new Mutex();
443	<	final Condition c = lock.newCondition();
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	<	}
416	<	catch (IllegalMonitorStateException success) {
417	<	}
418	<	catch (Exception ex) {
419	<	unexpectedException();
420	<	}
447	>	} catch (IllegalMonitorStateException success) {}
448		}
449
450		/**
451	<	* Calling signal without holding lock throws IllegalMonitorStateException
451	>	* Calling signal without holding sync throws IllegalMonitorStateException
452		*/
453		public void testSignal_IllegalMonitor() {
454	<	final Mutex lock = new Mutex();
455	<	final Condition c = lock.newCondition();
454	>	final Mutex sync = new Mutex();
455	>	final AbstractQueuedSynchronizer.ConditionObject c = sync.newCondition();
456		try {
457		c.signal();
458		shouldThrow();
459	<	}
433	<	catch (IllegalMonitorStateException success) {
434	<	}
435	<	catch (Exception ex) {
436	<	unexpectedException();
437	<	}
459	>	} catch (IllegalMonitorStateException success) {}
460		}
461
462		/**
463		* awaitNanos without a signal times out
464		*/
465	<	public void testAwaitNanos_Timeout() {
466	<	final Mutex lock = new Mutex();
467	<	final Condition c = lock.newCondition();
468	<	try {
469	<	lock.acquireExclusiveUninterruptibly(1);
470	<	long t = c.awaitNanos(100);
471	<	assertTrue(t <= 0);
450	<	lock.releaseExclusive(1);
451	<	}
452	<	catch (Exception ex) {
453	<	unexpectedException();
454	<	}
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() {
478	<	final Mutex lock = new Mutex();
479	<	final Condition c = lock.newCondition();
480	<	try {
481	<	lock.acquireExclusiveUninterruptibly(1);
482	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
466	<	lock.releaseExclusive(1);
467	<	}
468	<	catch (Exception ex) {
469	<	unexpectedException();
470	<	}
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		* awaitUntil without a signal times out
487		*/
488	<	public void testAwaitUntil_Timeout() {
489	<	final Mutex lock = new Mutex();
490	<	final Condition c = lock.newCondition();
491	<	try {
492	<	lock.acquireExclusiveUninterruptibly(1);
493	<	java.util.Date d = new java.util.Date();
494	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
483	<	lock.releaseExclusive(1);
484	<	}
485	<	catch (Exception ex) {
486	<	unexpectedException();
487	<	}
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		* await returns when signalled
499		*/
500	<	public void testAwait() {
501	<	final Mutex lock = new Mutex();
502	<	final Condition c = lock.newCondition();
503	<	Thread t = new Thread(new Runnable() {
504	<	public void run() {
505	<	try {
506	<	lock.acquireExclusiveUninterruptibly(1);
507	<	c.await();
508	<	lock.releaseExclusive(1);
509	<	}
510	<	catch(InterruptedException e) {
511	<	threadUnexpectedException();
512	<	}
513	<	}
514	<	});
515	<
516	<	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	<	}
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	<	* Latch isSignalled initially returns false, then true after release
522	>	* hasWaiters throws NPE if null
523		*/
524	<	public void testLatchIsSignalled() {
525	<	final BooleanLatch l = new BooleanLatch();
526	<	assertFalse(l.isSignalled());
527	<	l.releaseShared(0);
528	<	assertTrue(l.isSignalled());
524	>	public void testHasWaitersNPE() {
525	>	final Mutex sync = new Mutex();
526	>	try {
527	>	sync.hasWaiters(null);
528	>	shouldThrow();
529	>	} catch (NullPointerException success) {}
530		}
531
532		/**
533	<	* release and has no effect when already signalled
533	>	* getWaitQueueLength throws NPE if null
534		*/
535	<	public void testLatchBoolean() {
536	<	final BooleanLatch l = new BooleanLatch();
537	<	assertFalse(l.isSignalled());
538	<	l.releaseShared(0);
539	<	assertTrue(l.isSignalled());
540	<	l.releaseShared(0);
541	<	assertTrue(l.isSignalled());
535	>	public void testGetWaitQueueLengthNPE() {
536	>	final Mutex sync = new Mutex();
537	>	try {
538	>	sync.getWaitQueueLength(null);
539	>	shouldThrow();
540	>	} catch (NullPointerException success) {}
541	>	}
542	>
543	>
544	>	/**
545	>	* getWaitingThreads throws NPE if null
546	>	*/
547	>	public void testGetWaitingThreadsNPE() {
548	>	final Mutex sync = new Mutex();
549	>	try {
550	>	sync.getWaitingThreads(null);
551	>	shouldThrow();
552	>	} catch (NullPointerException success) {}
553	>	}
554	>
555	>
556	>	/**
557	>	* hasWaiters throws IAE if not owned
558	>	*/
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	>	* hasWaiters throws IMSE if not synced
571	>	*/
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	>	* getWaitQueueLength throws IAE if not owned
584	>	*/
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	>	* getWaitQueueLength throws IMSE if not synced
597	>	*/
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	>
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 testLatchAcquireSharedInterruptibly() {
930	<	final BooleanLatch l = new BooleanLatch();
929	>	public void testAcquireSharedInterruptibly() throws InterruptedException {
930	>	final BooleanLatch l = new BooleanLatch();
931
932	<	Thread t = new Thread(new Runnable() {
933	<	public void run() {
934	<	try {
935	<	threadAssertFalse(l.isSignalled());
936	<	l.acquireSharedInterruptibly(0);
937	<	threadAssertTrue(l.isSignalled());
938	<	} catch(InterruptedException e){
939	<	threadUnexpectedException();
940	<	}
941	<	}
942	<	});
943	<	try {
944	<	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	<	}
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	<
946	>
947
948		/**
949		* acquireSharedTimed returns after release
950		*/
951	<	public void testLatchTimedacquireSharedInterruptibly() {
952	<	final BooleanLatch l = new BooleanLatch();
951	>	public void testAsquireSharedTimed() throws InterruptedException {
952	>	final BooleanLatch l = new BooleanLatch();
953
954	<	Thread t = new Thread(new Runnable() {
955	<	public void run() {
956	<	try {
957	<	threadAssertFalse(l.isSignalled());
958	<	threadAssertTrue(l.acquireSharedNanos(0, MEDIUM_DELAY_MS* 1000 * 1000));
959	<	threadAssertTrue(l.isSignalled());
960	<
961	<	} catch(InterruptedException e){
962	<	threadUnexpectedException();
963	<	}
964	<	}
965	<	});
966	<	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	<	}
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	<
968	>
969		/**
970		* acquireSharedInterruptibly throws IE if interrupted before released
971		*/
972	<	public void testLatchAcquireSharedInterruptibly_InterruptedException() {
972	>	public void testAcquireSharedInterruptibly_InterruptedException() throws InterruptedException {
973		final BooleanLatch l = new BooleanLatch();
974	<	Thread t = new Thread(new Runnable() {
975	<	public void run() {
976	<	try {
977	<	threadAssertFalse(l.isSignalled());
978	<	l.acquireSharedInterruptibly(0);
979	<	threadShouldThrow();
980	<	} catch(InterruptedException success){}
981	<	}
982	<	});
983	<	t.start();
621	<	try {
622	<	assertFalse(l.isSignalled());
623	<	t.interrupt();
624	<	t.join();
625	<	} catch (InterruptedException e){
626	<	unexpectedException();
627	<	}
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 testLatchTimedAwait_InterruptedException() {
989	>	public void testAcquireSharedNanos_InterruptedException() throws InterruptedException {
990		final BooleanLatch l = new BooleanLatch();
991	<	Thread t = new Thread(new Runnable() {
992	<	public void run() {
993	<	try {
994	<	threadAssertFalse(l.isSignalled());
995	<	l.acquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000);
996	<	threadShouldThrow();
997	<	} catch(InterruptedException success){}
998	<	}
999	<	});
1000	<	t.start();
1001	<	try {
646	<	Thread.sleep(SHORT_DELAY_MS);
647	<	assertFalse(l.isSignalled());
648	<	t.interrupt();
649	<	t.join();
650	<	} catch (InterruptedException e){
651	<	unexpectedException();
652	<	}
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 testLatchAwaitTimeout() {
1007	>	public void testAcquireSharedNanos_Timeout() throws InterruptedException {
1008		final BooleanLatch l = new BooleanLatch();
1009	<	Thread t = new Thread(new Runnable() {
1010	<	public void run() {
1011	<	try {
1012	<	threadAssertFalse(l.isSignalled());
1013	<	threadAssertFalse(l.acquireSharedNanos(0, SMALL_DELAY_MS* 1000 * 1000));
1014	<	} catch(InterruptedException ie){
1015	<	threadUnexpectedException();
1016	<	}
1017	<	}
1018	<	});
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	<	}
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	<
1020	>
1021		}

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