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root/jsr166/jsr166/src/test/tck/ReentrantLockTest.java

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.10 by dl, Sat Dec 27 14:16:33 2003 UTC vs.
Revision 1.42 by jsr166, Sat May 7 03:12:48 2011 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.concurrent.locks.*;
11		import java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.util.*;
14		import java.io.*;
15
16		public class ReentrantLockTest extends JSR166TestCase {
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run(suite());
19		}
20		public static Test suite() {
21	<	return new TestSuite(ReentrantLockTest.class);
21	>	return new TestSuite(ReentrantLockTest.class);
22		}
23
24		/**
25		* A runnable calling lockInterruptibly
26		*/
27	<	class InterruptibleLockRunnable implements Runnable {
27	>	class InterruptibleLockRunnable extends CheckedRunnable {
28		final ReentrantLock lock;
29		InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
30	<	public void run() {
31	<	try {
30	<	lock.lockInterruptibly();
31	<	} catch(InterruptedException success){}
30	>	public void realRun() throws InterruptedException {
31	>	lock.lockInterruptibly();
32		}
33		}
34
#	Line 37 | Line 37 | public class ReentrantLockTest extends J
37		* A runnable calling lockInterruptibly that expects to be
38		* interrupted
39		*/
40	<	class InterruptedLockRunnable implements Runnable {
40	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
41		final ReentrantLock lock;
42		InterruptedLockRunnable(ReentrantLock l) { lock = l; }
43	<	public void run() {
44	<	try {
45	<	lock.lockInterruptibly();
46	<	threadShouldThrow();
47	<	} catch(InterruptedException success){}
43	>	public void realRun() throws InterruptedException {
44	>	lock.lockInterruptibly();
45		}
46		}
47
#	Line 53 | Line 50 | public class ReentrantLockTest extends J
50		*/
51		static class PublicReentrantLock extends ReentrantLock {
52		PublicReentrantLock() { super(); }
53	<	public Collection<Thread> getQueuedThreads() {
54	<	return super.getQueuedThreads();
53	>	public Collection<Thread> getQueuedThreads() {
54	>	return super.getQueuedThreads();
55		}
56	<	public ConditionObject newCondition() {
57	<	return new PublicCondition();
56	>	public Collection<Thread> getWaitingThreads(Condition c) {
57	>	return super.getWaitingThreads(c);
58		}
62	–
63	–	class PublicCondition extends ReentrantLock.ConditionObject {
64	–	PublicCondition() { }
65	–	public Collection<Thread> getWaitingThreads() {
66	–	return super.getWaitingThreads();
67	–	}
68	–	}
69	–
59		}
60
61		/**
62		* Constructor sets given fairness
63		*/
64	<	public void testConstructor() {
65	<	ReentrantLock rl = new ReentrantLock();
66	<	assertFalse(rl.isFair());
67	<	ReentrantLock r2 = new ReentrantLock(true);
79	<	assertTrue(r2.isFair());
64	>	public void testConstructor() {
65	>	assertFalse(new ReentrantLock().isFair());
66	>	assertFalse(new ReentrantLock(false).isFair());
67	>	assertTrue(new ReentrantLock(true).isFair());
68		}
69
70		/**
71		* locking an unlocked lock succeeds
72		*/
73	<	public void testLock() {
74	<	ReentrantLock rl = new ReentrantLock();
73	>	public void testLock() {
74	>	ReentrantLock rl = new ReentrantLock();
75		rl.lock();
76		assertTrue(rl.isLocked());
77		rl.unlock();
78	+	assertFalse(rl.isLocked());
79		}
80
81		/**
82		* locking an unlocked fair lock succeeds
83		*/
84	<	public void testFairLock() {
85	<	ReentrantLock rl = new ReentrantLock(true);
84	>	public void testFairLock() {
85	>	ReentrantLock rl = new ReentrantLock(true);
86		rl.lock();
87		assertTrue(rl.isLocked());
88		rl.unlock();
#	Line 102 | Line 91 | public class ReentrantLockTest extends J
91		/**
92		* Unlocking an unlocked lock throws IllegalMonitorStateException
93		*/
94	<	public void testUnlock_IllegalMonitorStateException() {
95	<	ReentrantLock rl = new ReentrantLock();
96	<	try {
97	<	rl.unlock();
98	<	shouldThrow();
99	<
111	<	} catch(IllegalMonitorStateException success){}
94	>	public void testUnlock_IllegalMonitorStateException() {
95	>	ReentrantLock rl = new ReentrantLock();
96	>	try {
97	>	rl.unlock();
98	>	shouldThrow();
99	>	} catch (IllegalMonitorStateException success) {}
100		}
101
102		/**
103	<	* trylock on an unlocked lock succeeds
103	>	* tryLock on an unlocked lock succeeds
104		*/
105	<	public void testTryLock() {
106	<	ReentrantLock rl = new ReentrantLock();
105	>	public void testTryLock() {
106	>	ReentrantLock rl = new ReentrantLock();
107		assertTrue(rl.tryLock());
108		assertTrue(rl.isLocked());
109		rl.unlock();
#	Line 123 | Line 111 | public class ReentrantLockTest extends J
111
112
113		/**
114	+	* hasQueuedThreads reports whether there are waiting threads
115	+	*/
116	+	public void testhasQueuedThreads() throws InterruptedException {
117	+	final ReentrantLock lock = new ReentrantLock();
118	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
119	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
120	+	assertFalse(lock.hasQueuedThreads());
121	+	lock.lock();
122	+	t1.start();
123	+	delay(SHORT_DELAY_MS);
124	+	assertTrue(lock.hasQueuedThreads());
125	+	t2.start();
126	+	delay(SHORT_DELAY_MS);
127	+	assertTrue(lock.hasQueuedThreads());
128	+	t1.interrupt();
129	+	delay(SHORT_DELAY_MS);
130	+	assertTrue(lock.hasQueuedThreads());
131	+	lock.unlock();
132	+	delay(SHORT_DELAY_MS);
133	+	assertFalse(lock.hasQueuedThreads());
134	+	awaitTermination(t1);
135	+	awaitTermination(t2);
136	+	}
137	+
138	+	/**
139		* getQueueLength reports number of waiting threads
140		*/
141	<	public void testGetQueueLength() {
142	<	final ReentrantLock lock = new ReentrantLock();
141	>	public void testGetQueueLength() throws InterruptedException {
142	>	final ReentrantLock lock = new ReentrantLock();
143		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
144		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
145	+	assertEquals(0, lock.getQueueLength());
146	+	lock.lock();
147	+	t1.start();
148	+	delay(SHORT_DELAY_MS);
149	+	assertEquals(1, lock.getQueueLength());
150	+	t2.start();
151	+	delay(SHORT_DELAY_MS);
152	+	assertEquals(2, lock.getQueueLength());
153	+	t1.interrupt();
154	+	delay(SHORT_DELAY_MS);
155	+	assertEquals(1, lock.getQueueLength());
156	+	lock.unlock();
157	+	delay(SHORT_DELAY_MS);
158	+	assertEquals(0, lock.getQueueLength());
159	+	awaitTermination(t1);
160	+	awaitTermination(t2);
161	+	}
162	+
163	+	/**
164	+	* getQueueLength reports number of waiting threads
165	+	*/
166	+	public void testGetQueueLength_fair() throws InterruptedException {
167	+	final ReentrantLock lock = new ReentrantLock(true);
168	+	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
169	+	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
170	+	assertEquals(0, lock.getQueueLength());
171	+	lock.lock();
172	+	t1.start();
173	+	delay(SHORT_DELAY_MS);
174	+	assertEquals(1, lock.getQueueLength());
175	+	t2.start();
176	+	delay(SHORT_DELAY_MS);
177	+	assertEquals(2, lock.getQueueLength());
178	+	t1.interrupt();
179	+	delay(SHORT_DELAY_MS);
180	+	assertEquals(1, lock.getQueueLength());
181	+	lock.unlock();
182	+	delay(SHORT_DELAY_MS);
183	+	assertEquals(0, lock.getQueueLength());
184	+	awaitTermination(t1);
185	+	awaitTermination(t2);
186	+	}
187	+
188	+	/**
189	+	* hasQueuedThread(null) throws NPE
190	+	*/
191	+	public void testHasQueuedThreadNPE() {
192	+	final ReentrantLock sync = new ReentrantLock();
193		try {
194	<	assertEquals(0, lock.getQueueLength());
195	<	lock.lock();
196	<	t1.start();
197	<	Thread.sleep(SHORT_DELAY_MS);
198	<	assertEquals(1, lock.getQueueLength());
199	<	t2.start();
200	<	Thread.sleep(SHORT_DELAY_MS);
201	<	assertEquals(2, lock.getQueueLength());
202	<	t1.interrupt();
203	<	Thread.sleep(SHORT_DELAY_MS);
204	<	assertEquals(1, lock.getQueueLength());
205	<	lock.unlock();
206	<	Thread.sleep(SHORT_DELAY_MS);
207	<	assertEquals(0, lock.getQueueLength());
208	<	t1.join();
209	<	t2.join();
210	<	} catch(Exception e){
211	<	unexpectedException();
212	<	}
213	<	}
194	>	sync.hasQueuedThread(null);
195	>	shouldThrow();
196	>	} catch (NullPointerException success) {}
197	>	}
198	>
199	>	/**
200	>	* hasQueuedThread reports whether a thread is queued.
201	>	*/
202	>	public void testHasQueuedThread() throws InterruptedException {
203	>	final ReentrantLock sync = new ReentrantLock();
204	>	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
205	>	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
206	>	assertFalse(sync.hasQueuedThread(t1));
207	>	assertFalse(sync.hasQueuedThread(t2));
208	>	sync.lock();
209	>	t1.start();
210	>	delay(SHORT_DELAY_MS);
211	>	assertTrue(sync.hasQueuedThread(t1));
212	>	t2.start();
213	>	delay(SHORT_DELAY_MS);
214	>	assertTrue(sync.hasQueuedThread(t1));
215	>	assertTrue(sync.hasQueuedThread(t2));
216	>	t1.interrupt();
217	>	delay(SHORT_DELAY_MS);
218	>	assertFalse(sync.hasQueuedThread(t1));
219	>	assertTrue(sync.hasQueuedThread(t2));
220	>	sync.unlock();
221	>	delay(SHORT_DELAY_MS);
222	>	assertFalse(sync.hasQueuedThread(t1));
223	>	delay(SHORT_DELAY_MS);
224	>	assertFalse(sync.hasQueuedThread(t2));
225	>	awaitTermination(t1);
226	>	awaitTermination(t2);
227	>	}
228	>
229
230		/**
231		* getQueuedThreads includes waiting threads
232		*/
233	<	public void testGetQueuedThreads() {
234	<	final PublicReentrantLock lock = new PublicReentrantLock();
233	>	public void testGetQueuedThreads() throws InterruptedException {
234	>	final PublicReentrantLock lock = new PublicReentrantLock();
235		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
236		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
237	<	try {
238	<	assertTrue(lock.getQueuedThreads().isEmpty());
239	<	lock.lock();
240	<	assertTrue(lock.getQueuedThreads().isEmpty());
241	<	t1.start();
242	<	Thread.sleep(SHORT_DELAY_MS);
243	<	assertTrue(lock.getQueuedThreads().contains(t1));
244	<	t2.start();
245	<	Thread.sleep(SHORT_DELAY_MS);
246	<	assertTrue(lock.getQueuedThreads().contains(t1));
247	<	assertTrue(lock.getQueuedThreads().contains(t2));
248	<	t1.interrupt();
249	<	Thread.sleep(SHORT_DELAY_MS);
250	<	assertFalse(lock.getQueuedThreads().contains(t1));
251	<	assertTrue(lock.getQueuedThreads().contains(t2));
252	<	lock.unlock();
253	<	Thread.sleep(SHORT_DELAY_MS);
254	<	assertTrue(lock.getQueuedThreads().isEmpty());
255	<	t1.join();
256	<	t2.join();
181	<	} catch(Exception e){
182	<	unexpectedException();
183	<	}
184	<	}
237	>	assertTrue(lock.getQueuedThreads().isEmpty());
238	>	lock.lock();
239	>	assertTrue(lock.getQueuedThreads().isEmpty());
240	>	t1.start();
241	>	delay(SHORT_DELAY_MS);
242	>	assertTrue(lock.getQueuedThreads().contains(t1));
243	>	t2.start();
244	>	delay(SHORT_DELAY_MS);
245	>	assertTrue(lock.getQueuedThreads().contains(t1));
246	>	assertTrue(lock.getQueuedThreads().contains(t2));
247	>	t1.interrupt();
248	>	delay(SHORT_DELAY_MS);
249	>	assertFalse(lock.getQueuedThreads().contains(t1));
250	>	assertTrue(lock.getQueuedThreads().contains(t2));
251	>	lock.unlock();
252	>	delay(SHORT_DELAY_MS);
253	>	assertTrue(lock.getQueuedThreads().isEmpty());
254	>	awaitTermination(t1);
255	>	awaitTermination(t2);
256	>	}
257
258
259		/**
260	<	* timed trylock is interruptible.
260	>	* timed tryLock is interruptible.
261		*/
262	<	public void testInterruptedException2() {
263	<	final ReentrantLock lock = new ReentrantLock();
264	<	lock.lock();
265	<	Thread t = new Thread(new Runnable() {
266	<	public void run() {
267	<	try {
268	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
269	<	threadShouldThrow();
270	<	} catch(InterruptedException success){}
271	<	}
272	<	});
201	<	try {
202	<	t.start();
203	<	t.interrupt();
204	<	} catch(Exception e){
205	<	unexpectedException();
206	<	}
262	>	public void testInterruptedException2() throws InterruptedException {
263	>	final ReentrantLock lock = new ReentrantLock();
264	>	lock.lock();
265	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
266	>	public void realRun() throws InterruptedException {
267	>	lock.tryLock(MEDIUM_DELAY_MS,MILLISECONDS);
268	>	}});
269	>
270	>	delay(SHORT_DELAY_MS);
271	>	t.interrupt();
272	>	awaitTermination(t);
273		}
274
275
276		/**
277	<	* Trylock on a locked lock fails
277	>	* TryLock on a locked lock fails
278		*/
279	<	public void testTryLockWhenLocked() {
280	<	final ReentrantLock lock = new ReentrantLock();
281	<	lock.lock();
282	<	Thread t = new Thread(new Runnable() {
283	<	public void run() {
284	<	threadAssertFalse(lock.tryLock());
285	<	}
286	<	});
287	<	try {
288	<	t.start();
289	<	t.join();
224	<	lock.unlock();
225	<	} catch(Exception e){
226	<	unexpectedException();
227	<	}
228	<	}
279	>	public void testTryLockWhenLocked() throws InterruptedException {
280	>	final ReentrantLock lock = new ReentrantLock();
281	>	lock.lock();
282	>	Thread t = newStartedThread(new CheckedRunnable() {
283	>	public void realRun() {
284	>	assertFalse(lock.tryLock());
285	>	}});
286	>
287	>	awaitTermination(t);
288	>	lock.unlock();
289	>	}
290
291		/**
292	<	* Timed trylock on a locked lock times out
292	>	* Timed tryLock on a locked lock times out
293		*/
294	<	public void testTryLock_Timeout() {
295	<	final ReentrantLock lock = new ReentrantLock();
296	<	lock.lock();
297	<	Thread t = new Thread(new Runnable() {
298	<	public void run() {
299	<	try {
300	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
301	<	} catch (Exception ex) {
302	<	threadUnexpectedException();
303	<	}
304	<	}
305	<	});
245	<	try {
246	<	t.start();
247	<	t.join();
248	<	lock.unlock();
249	<	} catch(Exception e){
250	<	unexpectedException();
251	<	}
252	<	}
253	<
294	>	public void testTryLock_Timeout() throws InterruptedException {
295	>	final ReentrantLock lock = new ReentrantLock();
296	>	lock.lock();
297	>	Thread t = newStartedThread(new CheckedRunnable() {
298	>	public void realRun() throws InterruptedException {
299	>	assertFalse(lock.tryLock(1, MILLISECONDS));
300	>	}});
301	>
302	>	awaitTermination(t);
303	>	lock.unlock();
304	>	}
305	>
306		/**
307		* getHoldCount returns number of recursive holds
308		*/
309		public void testGetHoldCount() {
310	<	ReentrantLock lock = new ReentrantLock();
311	<	for(int i = 1; i <= SIZE; i++) {
312	<	lock.lock();
313	<	assertEquals(i,lock.getHoldCount());
314	<	}
315	<	for(int i = SIZE; i > 0; i--) {
316	<	lock.unlock();
317	<	assertEquals(i-1,lock.getHoldCount());
318	<	}
310	>	ReentrantLock lock = new ReentrantLock();
311	>	for (int i = 1; i <= SIZE; i++) {
312	>	lock.lock();
313	>	assertEquals(i, lock.getHoldCount());
314	>	}
315	>	for (int i = SIZE; i > 0; i--) {
316	>	lock.unlock();
317	>	assertEquals(i-1, lock.getHoldCount());
318	>	}
319		}
320	<
321	<
320	>
321	>
322		/**
323		* isLocked is true when locked and false when not
324		*/
325	<	public void testIsLocked() {
326	<	final ReentrantLock lock = new ReentrantLock();
327	<	lock.lock();
328	<	assertTrue(lock.isLocked());
329	<	lock.unlock();
330	<	assertFalse(lock.isLocked());
331	<	Thread t = new Thread(new Runnable() {
332	<	public void run() {
333	<	lock.lock();
334	<	try {
335	<	Thread.sleep(SMALL_DELAY_MS);
336	<	}
337	<	catch(Exception e) {
338	<	threadUnexpectedException();
339	<	}
340	<	lock.unlock();
341	<	}
290	<	});
291	<	try {
292	<	t.start();
293	<	Thread.sleep(SHORT_DELAY_MS);
294	<	assertTrue(lock.isLocked());
295	<	t.join();
296	<	assertFalse(lock.isLocked());
297	<	} catch(Exception e){
298	<	unexpectedException();
299	<	}
325	>	public void testIsLocked() throws InterruptedException {
326	>	final ReentrantLock lock = new ReentrantLock();
327	>	lock.lock();
328	>	assertTrue(lock.isLocked());
329	>	lock.unlock();
330	>	assertFalse(lock.isLocked());
331	>	Thread t = newStartedThread(new CheckedRunnable() {
332	>	public void realRun() throws InterruptedException {
333	>	lock.lock();
334	>	delay(SMALL_DELAY_MS);
335	>	lock.unlock();
336	>	}});
337	>
338	>	delay(SHORT_DELAY_MS);
339	>	assertTrue(lock.isLocked());
340	>	awaitTermination(t);
341	>	assertFalse(lock.isLocked());
342		}
343
344
345		/**
346		* lockInterruptibly is interruptible.
347		*/
348	<	public void testLockInterruptibly1() {
349	<	final ReentrantLock lock = new ReentrantLock();
350	<	lock.lock();
351	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
352	<	try {
353	<	t.start();
354	<	t.interrupt();
355	<	lock.unlock();
356	<	t.join();
357	<	} catch(Exception e){
316	<	unexpectedException();
317	<	}
318	<	}
348	>	public void testLockInterruptibly1() throws InterruptedException {
349	>	final ReentrantLock lock = new ReentrantLock();
350	>	lock.lock();
351	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
352	>	delay(SHORT_DELAY_MS);
353	>	t.interrupt();
354	>	delay(SHORT_DELAY_MS);
355	>	lock.unlock();
356	>	awaitTermination(t);
357	>	}
358
359		/**
360		* lockInterruptibly succeeds when unlocked, else is interruptible
361		*/
362	<	public void testLockInterruptibly2() {
363	<	final ReentrantLock lock = new ReentrantLock();
364	<	try {
365	<	lock.lockInterruptibly();
366	<	} catch(Exception e) {
367	<	unexpectedException();
368	<	}
369	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
370	<	try {
332	<	t.start();
333	<	t.interrupt();
334	<	assertTrue(lock.isLocked());
335	<	assertTrue(lock.isHeldByCurrentThread());
336	<	t.join();
337	<	} catch(Exception e){
338	<	unexpectedException();
339	<	}
362	>	public void testLockInterruptibly2() throws InterruptedException {
363	>	final ReentrantLock lock = new ReentrantLock();
364	>	lock.lockInterruptibly();
365	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
366	>	delay(SHORT_DELAY_MS);
367	>	t.interrupt();
368	>	assertTrue(lock.isLocked());
369	>	assertTrue(lock.isHeldByCurrentThread());
370	>	awaitTermination(t);
371		}
372
373		/**
374		* Calling await without holding lock throws IllegalMonitorStateException
375		*/
376	<	public void testAwait_IllegalMonitor() {
377	<	final ReentrantLock lock = new ReentrantLock();
376	>	public void testAwait_IllegalMonitor() throws InterruptedException {
377	>	final ReentrantLock lock = new ReentrantLock();
378		final Condition c = lock.newCondition();
379		try {
380		c.await();
381		shouldThrow();
382	<	}
352	<	catch (IllegalMonitorStateException success) {
353	<	}
354	<	catch (Exception ex) {
355	<	unexpectedException();
356	<	}
382	>	} catch (IllegalMonitorStateException success) {}
383		}
384
385		/**
386		* Calling signal without holding lock throws IllegalMonitorStateException
387		*/
388		public void testSignal_IllegalMonitor() {
389	<	final ReentrantLock lock = new ReentrantLock();
389	>	final ReentrantLock lock = new ReentrantLock();
390		final Condition c = lock.newCondition();
391		try {
392		c.signal();
393		shouldThrow();
394	<	}
369	<	catch (IllegalMonitorStateException success) {
370	<	}
371	<	catch (Exception ex) {
372	<	unexpectedException();
373	<	}
394	>	} catch (IllegalMonitorStateException success) {}
395		}
396
397		/**
398		* awaitNanos without a signal times out
399		*/
400	<	public void testAwaitNanos_Timeout() {
401	<	final ReentrantLock lock = new ReentrantLock();
400	>	public void testAwaitNanos_Timeout() throws InterruptedException {
401	>	final ReentrantLock lock = new ReentrantLock();
402	>	final Condition c = lock.newCondition();
403	>	lock.lock();
404	>	long t = c.awaitNanos(100);
405	>	assertTrue(t <= 0);
406	>	lock.unlock();
407	>	}
408	>
409	>	/**
410	>	* timed await without a signal times out
411	>	*/
412	>	public void testAwait_Timeout() throws InterruptedException {
413	>	final ReentrantLock lock = new ReentrantLock();
414	>	final Condition c = lock.newCondition();
415	>	lock.lock();
416	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
417	>	lock.unlock();
418	>	}
419	>
420	>	/**
421	>	* awaitUntil without a signal times out
422	>	*/
423	>	public void testAwaitUntil_Timeout() throws InterruptedException {
424	>	final ReentrantLock lock = new ReentrantLock();
425	>	final Condition c = lock.newCondition();
426	>	lock.lock();
427	>	java.util.Date d = new java.util.Date();
428	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
429	>	lock.unlock();
430	>	}
431	>
432	>	/**
433	>	* await returns when signalled
434	>	*/
435	>	public void testAwait() throws InterruptedException {
436	>	final ReentrantLock lock = new ReentrantLock();
437		final Condition c = lock.newCondition();
438	+	Thread t = newStartedThread(new CheckedRunnable() {
439	+	public void realRun() throws InterruptedException {
440	+	lock.lock();
441	+	c.await();
442	+	lock.unlock();
443	+	}});
444	+
445	+	delay(SHORT_DELAY_MS);
446	+	lock.lock();
447	+	c.signal();
448	+	lock.unlock();
449	+	awaitTermination(t);
450	+	}
451	+
452	+	/**
453	+	* hasWaiters throws NPE if null
454	+	*/
455	+	public void testHasWaitersNPE() {
456	+	final ReentrantLock lock = new ReentrantLock();
457		try {
458	<	lock.lock();
459	<	long t = c.awaitNanos(100);
460	<	assertTrue(t <= 0);
461	<	lock.unlock();
462	<	}
463	<	catch (Exception ex) {
464	<	unexpectedException();
465	<	}
458	>	lock.hasWaiters(null);
459	>	shouldThrow();
460	>	} catch (NullPointerException success) {}
461	>	}
462	>
463	>	/**
464	>	* getWaitQueueLength throws NPE if null
465	>	*/
466	>	public void testGetWaitQueueLengthNPE() {
467	>	final ReentrantLock lock = new ReentrantLock();
468	>	try {
469	>	lock.getWaitQueueLength(null);
470	>	shouldThrow();
471	>	} catch (NullPointerException success) {}
472	>	}
473	>
474	>
475	>	/**
476	>	* getWaitingThreads throws NPE if null
477	>	*/
478	>	public void testGetWaitingThreadsNPE() {
479	>	final PublicReentrantLock lock = new PublicReentrantLock();
480	>	try {
481	>	lock.getWaitingThreads(null);
482	>	shouldThrow();
483	>	} catch (NullPointerException success) {}
484		}
485
486	+
487		/**
488	<	*  timed await without a signal times out
488	>	* hasWaiters throws IAE if not owned
489		*/
490	<	public void testAwait_Timeout() {
491	<	final ReentrantLock lock = new ReentrantLock();
490	>	public void testHasWaitersIAE() {
491	>	final ReentrantLock lock = new ReentrantLock();
492		final Condition c = lock.newCondition();
493	+	final ReentrantLock lock2 = new ReentrantLock();
494		try {
495	<	lock.lock();
496	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
497	<	lock.unlock();
403	<	}
404	<	catch (Exception ex) {
405	<	unexpectedException();
406	<	}
495	>	lock2.hasWaiters(c);
496	>	shouldThrow();
497	>	} catch (IllegalArgumentException success) {}
498		}
499
500		/**
501	<	* awaitUntil without a signal times out
501	>	* hasWaiters throws IMSE if not locked
502		*/
503	<	public void testAwaitUntil_Timeout() {
504	<	final ReentrantLock lock = new ReentrantLock();
503	>	public void testHasWaitersIMSE() {
504	>	final ReentrantLock lock = new ReentrantLock();
505		final Condition c = lock.newCondition();
506		try {
507	<	lock.lock();
508	<	java.util.Date d = new java.util.Date();
509	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
419	<	lock.unlock();
420	<	}
421	<	catch (Exception ex) {
422	<	unexpectedException();
423	<	}
507	>	lock.hasWaiters(c);
508	>	shouldThrow();
509	>	} catch (IllegalMonitorStateException success) {}
510		}
511
512	+
513		/**
514	<	* await returns when signalled
514	>	* getWaitQueueLength throws IAE if not owned
515		*/
516	<	public void testAwait() {
517	<	final ReentrantLock lock = new ReentrantLock();
518	<	final ReentrantLock.ConditionObject c = lock.newCondition();
519	<	Thread t = new Thread(new Runnable() {
520	<	public void run() {
521	<	try {
522	<	lock.lock();
523	<	c.await();
524	<	lock.unlock();
438	<	}
439	<	catch(InterruptedException e) {
440	<	threadUnexpectedException();
441	<	}
442	<	}
443	<	});
516	>	public void testGetWaitQueueLengthIAE() {
517	>	final ReentrantLock lock = new ReentrantLock();
518	>	final Condition c = lock.newCondition();
519	>	final ReentrantLock lock2 = new ReentrantLock();
520	>	try {
521	>	lock2.getWaitQueueLength(c);
522	>	shouldThrow();
523	>	} catch (IllegalArgumentException success) {}
524	>	}
525
526	+	/**
527	+	* getWaitQueueLength throws IMSE if not locked
528	+	*/
529	+	public void testGetWaitQueueLengthIMSE() {
530	+	final ReentrantLock lock = new ReentrantLock();
531	+	final Condition c = lock.newCondition();
532		try {
533	<	t.start();
534	<	Thread.sleep(SHORT_DELAY_MS);
535	<	lock.lock();
449	<	c.signal();
450	<	lock.unlock();
451	<	t.join(SHORT_DELAY_MS);
452	<	assertFalse(t.isAlive());
453	<	}
454	<	catch (Exception ex) {
455	<	unexpectedException();
456	<	}
533	>	lock.getWaitQueueLength(c);
534	>	shouldThrow();
535	>	} catch (IllegalMonitorStateException success) {}
536		}
537
538	+
539		/**
540	<	* hasWaiters returns true when a thread is waiting, else false
540	>	* getWaitingThreads throws IAE if not owned
541		*/
542	<	public void testHasWaiters() {
543	<	final ReentrantLock lock = new ReentrantLock();
544	<	final ReentrantLock.ConditionObject c = lock.newCondition();
545	<	Thread t = new Thread(new Runnable() {
546	<	public void run() {
547	<	try {
548	<	lock.lock();
549	<	threadAssertFalse(c.hasWaiters());
550	<	threadAssertEquals(0, c.getWaitQueueLength());
471	<	c.await();
472	<	lock.unlock();
473	<	}
474	<	catch(InterruptedException e) {
475	<	threadUnexpectedException();
476	<	}
477	<	}
478	<	});
542	>	public void testGetWaitingThreadsIAE() {
543	>	final PublicReentrantLock lock = new PublicReentrantLock();
544	>	final Condition c = lock.newCondition();
545	>	final PublicReentrantLock lock2 = new PublicReentrantLock();
546	>	try {
547	>	lock2.getWaitingThreads(c);
548	>	shouldThrow();
549	>	} catch (IllegalArgumentException success) {}
550	>	}
551
552	+	/**
553	+	* getWaitingThreads throws IMSE if not locked
554	+	*/
555	+	public void testGetWaitingThreadsIMSE() {
556	+	final PublicReentrantLock lock = new PublicReentrantLock();
557	+	final Condition c = lock.newCondition();
558		try {
559	<	t.start();
560	<	Thread.sleep(SHORT_DELAY_MS);
561	<	lock.lock();
562	<	assertTrue(c.hasWaiters());
563	<	assertEquals(1, c.getWaitQueueLength());
564	<	c.signal();
565	<	lock.unlock();
566	<	Thread.sleep(SHORT_DELAY_MS);
567	<	lock.lock();
568	<	assertFalse(c.hasWaiters());
569	<	assertEquals(0, c.getWaitQueueLength());
570	<	lock.unlock();
571	<	t.join(SHORT_DELAY_MS);
572	<	assertFalse(t.isAlive());
573	<	}
574	<	catch (Exception ex) {
575	<	unexpectedException();
576	<	}
559	>	lock.getWaitingThreads(c);
560	>	shouldThrow();
561	>	} catch (IllegalMonitorStateException success) {}
562	>	}
563	>
564	>
565	>	/**
566	>	* hasWaiters returns true when a thread is waiting, else false
567	>	*/
568	>	public void testHasWaiters() throws InterruptedException {
569	>	final ReentrantLock lock = new ReentrantLock();
570	>	final Condition c = lock.newCondition();
571	>	Thread t = newStartedThread(new CheckedRunnable() {
572	>	public void realRun() throws InterruptedException {
573	>	lock.lock();
574	>	assertFalse(lock.hasWaiters(c));
575	>	assertEquals(0, lock.getWaitQueueLength(c));
576	>	c.await();
577	>	lock.unlock();
578	>	}});
579	>
580	>	delay(SHORT_DELAY_MS);
581	>	lock.lock();
582	>	assertTrue(lock.hasWaiters(c));
583	>	assertEquals(1, lock.getWaitQueueLength(c));
584	>	c.signal();
585	>	lock.unlock();
586	>	delay(SHORT_DELAY_MS);
587	>	lock.lock();
588	>	assertFalse(lock.hasWaiters(c));
589	>	assertEquals(0, lock.getWaitQueueLength(c));
590	>	lock.unlock();
591	>	awaitTermination(t);
592		}
593
594		/**
595		* getWaitQueueLength returns number of waiting threads
596		*/
597	<	public void testGetWaitQueueLength() {
598	<	final ReentrantLock lock = new ReentrantLock();
599	<	final ReentrantLock.ConditionObject c = lock.newCondition();
600	<	Thread t1 = new Thread(new Runnable() {
601	<	public void run() {
602	<	try {
603	<	lock.lock();
604	<	threadAssertFalse(c.hasWaiters());
605	<	threadAssertEquals(0, c.getWaitQueueLength());
606	<	c.await();
607	<	lock.unlock();
608	<	}
609	<	catch(InterruptedException e) {
610	<	threadUnexpectedException();
611	<	}
612	<	}
613	<	});
614	<
615	<	Thread t2 = new Thread(new Runnable() {
616	<	public void run() {
617	<	try {
618	<	lock.lock();
619	<	threadAssertTrue(c.hasWaiters());
620	<	threadAssertEquals(1, c.getWaitQueueLength());
621	<	c.await();
622	<	lock.unlock();
623	<	}
624	<	catch(InterruptedException e) {
625	<	threadUnexpectedException();
626	<	}
627	<	}
628	<	});
629	<
630	<	try {
631	<	t1.start();
632	<	Thread.sleep(SHORT_DELAY_MS);
540	<	t2.start();
541	<	Thread.sleep(SHORT_DELAY_MS);
542	<	lock.lock();
543	<	assertTrue(c.hasWaiters());
544	<	assertEquals(2, c.getWaitQueueLength());
545	<	c.signalAll();
546	<	lock.unlock();
547	<	Thread.sleep(SHORT_DELAY_MS);
548	<	lock.lock();
549	<	assertFalse(c.hasWaiters());
550	<	assertEquals(0, c.getWaitQueueLength());
551	<	lock.unlock();
552	<	t1.join(SHORT_DELAY_MS);
553	<	t2.join(SHORT_DELAY_MS);
554	<	assertFalse(t1.isAlive());
555	<	assertFalse(t2.isAlive());
556	<	}
557	<	catch (Exception ex) {
558	<	unexpectedException();
559	<	}
597	>	public void testGetWaitQueueLength() throws InterruptedException {
598	>	final ReentrantLock lock = new ReentrantLock();
599	>	final Condition c = lock.newCondition();
600	>	Thread t1 = newStartedThread(new CheckedRunnable() {
601	>	public void realRun() throws InterruptedException {
602	>	lock.lock();
603	>	assertFalse(lock.hasWaiters(c));
604	>	assertEquals(0, lock.getWaitQueueLength(c));
605	>	c.await();
606	>	lock.unlock();
607	>	}});
608	>
609	>	delay(SHORT_DELAY_MS);
610	>
611	>	Thread t2 = newStartedThread(new CheckedRunnable() {
612	>	public void realRun() throws InterruptedException {
613	>	lock.lock();
614	>	assertTrue(lock.hasWaiters(c));
615	>	assertEquals(1, lock.getWaitQueueLength(c));
616	>	c.await();
617	>	lock.unlock();
618	>	}});
619	>
620	>	delay(SHORT_DELAY_MS);
621	>	lock.lock();
622	>	assertTrue(lock.hasWaiters(c));
623	>	assertEquals(2, lock.getWaitQueueLength(c));
624	>	c.signalAll();
625	>	lock.unlock();
626	>	delay(SHORT_DELAY_MS);
627	>	lock.lock();
628	>	assertFalse(lock.hasWaiters(c));
629	>	assertEquals(0, lock.getWaitQueueLength(c));
630	>	lock.unlock();
631	>	awaitTermination(t1);
632	>	awaitTermination(t2);
633		}
634
635		/**
636		* getWaitingThreads returns only and all waiting threads
637		*/
638	<	public void testGetWaitingThreads() {
639	<	final PublicReentrantLock lock = new PublicReentrantLock();
640	<	final PublicReentrantLock.PublicCondition c = (PublicReentrantLock.PublicCondition)lock.newCondition();
641	<	Thread t1 = new Thread(new Runnable() {
642	<	public void run() {
643	<	try {
644	<	lock.lock();
645	<	threadAssertTrue(c.getWaitingThreads().isEmpty());
646	<	c.await();
647	<	lock.unlock();
648	<	}
649	<	catch(InterruptedException e) {
650	<	threadUnexpectedException();
651	<	}
652	<	}
653	<	});
654	<
655	<	Thread t2 = new Thread(new Runnable() {
656	<	public void run() {
657	<	try {
658	<	lock.lock();
659	<	threadAssertFalse(c.getWaitingThreads().isEmpty());
660	<	c.await();
661	<	lock.unlock();
662	<	}
663	<	catch(InterruptedException e) {
664	<	threadUnexpectedException();
665	<	}
666	<	}
667	<	});
638	>	public void testGetWaitingThreads() throws InterruptedException {
639	>	final PublicReentrantLock lock = new PublicReentrantLock();
640	>	final Condition c = lock.newCondition();
641	>	Thread t1 = new Thread(new CheckedRunnable() {
642	>	public void realRun() throws InterruptedException {
643	>	lock.lock();
644	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
645	>	c.await();
646	>	lock.unlock();
647	>	}});
648	>
649	>	Thread t2 = new Thread(new CheckedRunnable() {
650	>	public void realRun() throws InterruptedException {
651	>	lock.lock();
652	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
653	>	c.await();
654	>	lock.unlock();
655	>	}});
656	>
657	>	lock.lock();
658	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
659	>	lock.unlock();
660	>	t1.start();
661	>	delay(SHORT_DELAY_MS);
662	>	t2.start();
663	>	delay(SHORT_DELAY_MS);
664	>	lock.lock();
665	>	assertTrue(lock.hasWaiters(c));
666	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
667	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
668	>	c.signalAll();
669	>	lock.unlock();
670	>	delay(SHORT_DELAY_MS);
671	>	lock.lock();
672	>	assertFalse(lock.hasWaiters(c));
673	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
674	>	lock.unlock();
675	>	awaitTermination(t1);
676	>	awaitTermination(t2);
677	>	}
678	>
679	>	/** A helper class for uninterruptible wait tests */
680	>	class UninterruptibleThread extends Thread {
681	>	private ReentrantLock lock;
682	>	private Condition c;
683	>
684	>	public volatile boolean canAwake = false;
685	>	public volatile boolean interrupted = false;
686	>	public volatile boolean lockStarted = false;
687	>
688	>	public UninterruptibleThread(ReentrantLock lock, Condition c) {
689	>	this.lock = lock;
690	>	this.c = c;
691	>	}
692
693	<	try {
597	<	lock.lock();
598	<	assertTrue(c.getWaitingThreads().isEmpty());
599	<	lock.unlock();
600	<	t1.start();
601	<	Thread.sleep(SHORT_DELAY_MS);
602	<	t2.start();
603	<	Thread.sleep(SHORT_DELAY_MS);
693	>	public synchronized void run() {
694		lock.lock();
695	<	assertTrue(c.hasWaiters());
696	<	assertTrue(c.getWaitingThreads().contains(t1));
697	<	assertTrue(c.getWaitingThreads().contains(t2));
698	<	c.signalAll();
699	<	lock.unlock();
700	<	Thread.sleep(SHORT_DELAY_MS);
701	<	lock.lock();
612	<	assertFalse(c.hasWaiters());
613	<	assertTrue(c.getWaitingThreads().isEmpty());
695	>	lockStarted = true;
696	>
697	>	while (!canAwake) {
698	>	c.awaitUninterruptibly();
699	>	}
700	>
701	>	interrupted = isInterrupted();
702		lock.unlock();
615	–	t1.join(SHORT_DELAY_MS);
616	–	t2.join(SHORT_DELAY_MS);
617	–	assertFalse(t1.isAlive());
618	–	assertFalse(t2.isAlive());
619	–	}
620	–	catch (Exception ex) {
621	–	unexpectedException();
703		}
704		}
705
706		/**
707		* awaitUninterruptibly doesn't abort on interrupt
708		*/
709	<	public void testAwaitUninterruptibly() {
710	<	final ReentrantLock lock = new ReentrantLock();
709	>	public void testAwaitUninterruptibly() throws InterruptedException {
710	>	final ReentrantLock lock = new ReentrantLock();
711		final Condition c = lock.newCondition();
712	<	Thread t = new Thread(new Runnable() {
632	<	public void run() {
633	<	lock.lock();
634	<	c.awaitUninterruptibly();
635	<	lock.unlock();
636	<	}
637	<	});
712	>	UninterruptibleThread thread = new UninterruptibleThread(lock, c);
713
714	+	thread.start();
715	+
716	+	while (!thread.lockStarted) {
717	+	delay(100);
718	+	}
719	+
720	+	lock.lock();
721		try {
722	<	t.start();
723	<	Thread.sleep(SHORT_DELAY_MS);
642	<	t.interrupt();
643	<	lock.lock();
722	>	thread.interrupt();
723	>	thread.canAwake = true;
724		c.signal();
725	+	} finally {
726		lock.unlock();
646	–	assert(t.isInterrupted());
647	–	t.join(SHORT_DELAY_MS);
648	–	assertFalse(t.isAlive());
649	–	}
650	–	catch (Exception ex) {
651	–	unexpectedException();
727		}
728	+
729	+	thread.join();
730	+	assertTrue(thread.interrupted);
731	+	assertFalse(thread.isAlive());
732		}
733
734		/**
735		* await is interruptible
736		*/
737	<	public void testAwait_Interrupt() {
738	<	final ReentrantLock lock = new ReentrantLock();
737	>	public void testAwait_Interrupt() throws InterruptedException {
738	>	final ReentrantLock lock = new ReentrantLock();
739		final Condition c = lock.newCondition();
740	<	Thread t = new Thread(new Runnable() {
741	<	public void run() {
742	<	try {
743	<	lock.lock();
744	<	c.await();
745	<	lock.unlock();
746	<	threadShouldThrow();
747	<	}
748	<	catch(InterruptedException success) {
670	<	}
671	<	}
672	<	});
673	<
674	<	try {
675	<	t.start();
676	<	Thread.sleep(SHORT_DELAY_MS);
677	<	t.interrupt();
678	<	t.join(SHORT_DELAY_MS);
679	<	assertFalse(t.isAlive());
680	<	}
681	<	catch (Exception ex) {
682	<	unexpectedException();
683	<	}
740	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
741	>	public void realRun() throws InterruptedException {
742	>	lock.lock();
743	>	c.await();
744	>	}});
745	>
746	>	delay(SHORT_DELAY_MS);
747	>	t.interrupt();
748	>	awaitTermination(t);
749		}
750
751		/**
752		* awaitNanos is interruptible
753		*/
754	<	public void testAwaitNanos_Interrupt() {
755	<	final ReentrantLock lock = new ReentrantLock();
754	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
755	>	final ReentrantLock lock = new ReentrantLock();
756		final Condition c = lock.newCondition();
757	<	Thread t = new Thread(new Runnable() {
758	<	public void run() {
759	<	try {
760	<	lock.lock();
761	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
762	<	lock.unlock();
763	<	threadShouldThrow();
764	<	}
765	<	catch(InterruptedException success) {
701	<	}
702	<	}
703	<	});
704	<
705	<	try {
706	<	t.start();
707	<	Thread.sleep(SHORT_DELAY_MS);
708	<	t.interrupt();
709	<	t.join(SHORT_DELAY_MS);
710	<	assertFalse(t.isAlive());
711	<	}
712	<	catch (Exception ex) {
713	<	unexpectedException();
714	<	}
757	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
758	>	public void realRun() throws InterruptedException {
759	>	lock.lock();
760	>	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
761	>	}});
762	>
763	>	delay(SHORT_DELAY_MS);
764	>	t.interrupt();
765	>	awaitTermination(t);
766		}
767
768		/**
769		* awaitUntil is interruptible
770		*/
771	<	public void testAwaitUntil_Interrupt() {
772	<	final ReentrantLock lock = new ReentrantLock();
771	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
772	>	final ReentrantLock lock = new ReentrantLock();
773		final Condition c = lock.newCondition();
774	<	Thread t = new Thread(new Runnable() {
775	<	public void run() {
776	<	try {
777	<	lock.lock();
778	<	java.util.Date d = new java.util.Date();
779	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
780	<	lock.unlock();
781	<	threadShouldThrow();
782	<	}
783	<	catch(InterruptedException success) {
733	<	}
734	<	}
735	<	});
736	<
737	<	try {
738	<	t.start();
739	<	Thread.sleep(SHORT_DELAY_MS);
740	<	t.interrupt();
741	<	t.join(SHORT_DELAY_MS);
742	<	assertFalse(t.isAlive());
743	<	}
744	<	catch (Exception ex) {
745	<	unexpectedException();
746	<	}
774	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
775	>	public void realRun() throws InterruptedException {
776	>	lock.lock();
777	>	java.util.Date d = new java.util.Date();
778	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
779	>	}});
780	>
781	>	delay(SHORT_DELAY_MS);
782	>	t.interrupt();
783	>	awaitTermination(t);
784		}
785
786		/**
787		* signalAll wakes up all threads
788		*/
789	<	public void testSignalAll() {
790	<	final ReentrantLock lock = new ReentrantLock();
789	>	public void testSignalAll() throws InterruptedException {
790	>	final ReentrantLock lock = new ReentrantLock();
791		final Condition c = lock.newCondition();
792	<	Thread t1 = new Thread(new Runnable() {
793	<	public void run() {
794	<	try {
795	<	lock.lock();
796	<	c.await();
797	<	lock.unlock();
798	<	}
799	<	catch(InterruptedException e) {
800	<	threadUnexpectedException();
801	<	}
802	<	}
803	<	});
804	<
805	<	Thread t2 = new Thread(new Runnable() {
806	<	public void run() {
807	<	try {
808	<	lock.lock();
809	<	c.await();
810	<	lock.unlock();
811	<	}
812	<	catch(InterruptedException e) {
813	<	threadUnexpectedException();
814	<	}
815	<	}
816	<	});
817	<
818	<	try {
819	<	t1.start();
820	<	t2.start();
821	<	Thread.sleep(SHORT_DELAY_MS);
822	<	lock.lock();
823	<	c.signalAll();
824	<	lock.unlock();
825	<	t1.join(SHORT_DELAY_MS);
826	<	t2.join(SHORT_DELAY_MS);
827	<	assertFalse(t1.isAlive());
828	<	assertFalse(t2.isAlive());
829	<	}
830	<	catch (Exception ex) {
831	<	unexpectedException();
832	<	}
792	>	Thread t1 = newStartedThread(new CheckedRunnable() {
793	>	public void realRun() throws InterruptedException {
794	>	lock.lock();
795	>	c.await();
796	>	lock.unlock();
797	>	}});
798	>
799	>	Thread t2 = newStartedThread(new CheckedRunnable() {
800	>	public void realRun() throws InterruptedException {
801	>	lock.lock();
802	>	c.await();
803	>	lock.unlock();
804	>	}});
805	>
806	>	delay(SHORT_DELAY_MS);
807	>	lock.lock();
808	>	c.signalAll();
809	>	lock.unlock();
810	>	awaitTermination(t1);
811	>	awaitTermination(t2);
812	>	}
813	>
814	>	/**
815	>	* await after multiple reentrant locking preserves lock count
816	>	*/
817	>	public void testAwaitLockCount() throws InterruptedException {
818	>	final ReentrantLock lock = new ReentrantLock();
819	>	final Condition c = lock.newCondition();
820	>	Thread t1 = newStartedThread(new CheckedRunnable() {
821	>	public void realRun() throws InterruptedException {
822	>	lock.lock();
823	>	assertEquals(1, lock.getHoldCount());
824	>	c.await();
825	>	assertEquals(1, lock.getHoldCount());
826	>	lock.unlock();
827	>	}});
828	>
829	>	Thread t2 = newStartedThread(new CheckedRunnable() {
830	>	public void realRun() throws InterruptedException {
831	>	lock.lock();
832	>	lock.lock();
833	>	assertEquals(2, lock.getHoldCount());
834	>	c.await();
835	>	assertEquals(2, lock.getHoldCount());
836	>	lock.unlock();
837	>	lock.unlock();
838	>	}});
839	>
840	>	delay(SHORT_DELAY_MS);
841	>	lock.lock();
842	>	c.signalAll();
843	>	lock.unlock();
844	>	awaitTermination(t1);
845	>	awaitTermination(t2);
846		}
847
848		/**
849		* A serialized lock deserializes as unlocked
850		*/
851	<	public void testSerialization() {
851	>	public void testSerialization() throws Exception {
852		ReentrantLock l = new ReentrantLock();
853		l.lock();
854		l.unlock();
855
856	<	try {
857	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
858	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
859	<	out.writeObject(l);
860	<	out.close();
861	<
862	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
863	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
864	<	ReentrantLock r = (ReentrantLock) in.readObject();
865	<	r.lock();
866	<	r.unlock();
867	<	} catch(Exception e){
868	<	e.printStackTrace();
869	<	unexpectedException();
870	<	}
856	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
857	>	ObjectOutputStream out =
858	>	new ObjectOutputStream(new BufferedOutputStream(bout));
859	>	out.writeObject(l);
860	>	out.close();
861	>
862	>	ByteArrayInputStream bin =
863	>	new ByteArrayInputStream(bout.toByteArray());
864	>	ObjectInputStream in =
865	>	new ObjectInputStream(new BufferedInputStream(bin));
866	>	ReentrantLock r = (ReentrantLock) in.readObject();
867	>	r.lock();
868	>	r.unlock();
869	>	}
870	>
871	>	/**
872	>	* toString indicates current lock state
873	>	*/
874	>	public void testToString() {
875	>	ReentrantLock lock = new ReentrantLock();
876	>	String us = lock.toString();
877	>	assertTrue(us.indexOf("Unlocked") >= 0);
878	>	lock.lock();
879	>	String ls = lock.toString();
880	>	assertTrue(ls.indexOf("Locked") >= 0);
881		}
882
883		}

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