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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 1.30 by jsr166, Sat Nov 21 02:07:27 2009 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/licenses/publicdomain
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
#	Line 13 | Line 14 | import java.io.*;
14
15		public class ReentrantLockTest extends JSR166TestCase {
16		public static void main(String[] args) {
17	<	junit.textui.TestRunner.run (suite());
17	>	junit.textui.TestRunner.run (suite());
18		}
19		public static Test suite() {
20	<	return new TestSuite(ReentrantLockTest.class);
20	>	return new TestSuite(ReentrantLockTest.class);
21		}
22
23		/**
24		* A runnable calling lockInterruptibly
25		*/
26	<	class InterruptibleLockRunnable implements Runnable {
26	>	class InterruptibleLockRunnable extends CheckedRunnable {
27		final ReentrantLock lock;
28		InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
29	<	public void run() {
30	<	try {
30	<	lock.lockInterruptibly();
31	<	} catch(InterruptedException success){}
29	>	public void realRun() throws InterruptedException {
30	>	lock.lockInterruptibly();
31		}
32		}
33
#	Line 37 | Line 36 | public class ReentrantLockTest extends J
36		* A runnable calling lockInterruptibly that expects to be
37		* interrupted
38		*/
39	<	class InterruptedLockRunnable implements Runnable {
39	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
40		final ReentrantLock lock;
41		InterruptedLockRunnable(ReentrantLock l) { lock = l; }
42	<	public void run() {
43	<	try {
45	<	lock.lockInterruptibly();
46	<	threadShouldThrow();
47	<	} catch(InterruptedException success){}
42	>	public void realRun() throws InterruptedException {
43	>	lock.lockInterruptibly();
44		}
45		}
46
#	Line 53 | Line 49 | public class ReentrantLockTest extends J
49		*/
50		static class PublicReentrantLock extends ReentrantLock {
51		PublicReentrantLock() { super(); }
52	<	public Collection<Thread> getQueuedThreads() {
53	<	return super.getQueuedThreads();
52	>	public Collection<Thread> getQueuedThreads() {
53	>	return super.getQueuedThreads();
54		}
55	<	public ConditionObject newCondition() {
56	<	return new PublicCondition();
55	>	public Collection<Thread> getWaitingThreads(Condition c) {
56	>	return super.getWaitingThreads(c);
57		}
58
63	–	class PublicCondition extends ReentrantLock.ConditionObject {
64	–	PublicCondition() { }
65	–	public Collection<Thread> getWaitingThreads() {
66	–	return super.getWaitingThreads();
67	–	}
68	–	}
59
60		}
61
62		/**
63		* Constructor sets given fairness
64		*/
65	<	public void testConstructor() {
66	<	ReentrantLock rl = new ReentrantLock();
67	<	assertFalse(rl.isFair());
68	<	ReentrantLock r2 = new ReentrantLock(true);
79	<	assertTrue(r2.isFair());
65	>	public void testConstructor() {
66	>	assertFalse(new ReentrantLock().isFair());
67	>	assertFalse(new ReentrantLock(false).isFair());
68	>	assertTrue(new ReentrantLock(true).isFair());
69		}
70
71		/**
72		* locking an unlocked lock succeeds
73		*/
74	<	public void testLock() {
75	<	ReentrantLock rl = new ReentrantLock();
74	>	public void testLock() {
75	>	ReentrantLock rl = new ReentrantLock();
76		rl.lock();
77		assertTrue(rl.isLocked());
78		rl.unlock();
79	+	assertFalse(rl.isLocked());
80		}
81
82		/**
83		* locking an unlocked fair lock succeeds
84		*/
85	<	public void testFairLock() {
86	<	ReentrantLock rl = new ReentrantLock(true);
85	>	public void testFairLock() {
86	>	ReentrantLock rl = new ReentrantLock(true);
87		rl.lock();
88		assertTrue(rl.isLocked());
89		rl.unlock();
#	Line 102 | Line 92 | public class ReentrantLockTest extends J
92		/**
93		* Unlocking an unlocked lock throws IllegalMonitorStateException
94		*/
95	<	public void testUnlock_IllegalMonitorStateException() {
96	<	ReentrantLock rl = new ReentrantLock();
97	<	try {
98	<	rl.unlock();
99	<	shouldThrow();
100	<
111	<	} catch(IllegalMonitorStateException success){}
95	>	public void testUnlock_IllegalMonitorStateException() {
96	>	ReentrantLock rl = new ReentrantLock();
97	>	try {
98	>	rl.unlock();
99	>	shouldThrow();
100	>	} catch (IllegalMonitorStateException success) {}
101		}
102
103		/**
104	<	* trylock on an unlocked lock succeeds
104	>	* tryLock on an unlocked lock succeeds
105		*/
106	<	public void testTryLock() {
107	<	ReentrantLock rl = new ReentrantLock();
106	>	public void testTryLock() {
107	>	ReentrantLock rl = new ReentrantLock();
108		assertTrue(rl.tryLock());
109		assertTrue(rl.isLocked());
110		rl.unlock();
#	Line 123 | Line 112 | public class ReentrantLockTest extends J
112
113
114		/**
115	<	* getQueueLength reports number of waiting threads
115	>	* hasQueuedThreads reports whether there are waiting threads
116		*/
117	<	public void testGetQueueLength() {
118	<	final ReentrantLock lock = new ReentrantLock();
117	>	public void testhasQueuedThreads() throws InterruptedException {
118	>	final ReentrantLock lock = new ReentrantLock();
119		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
120		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
121	<	try {
122	<	assertEquals(0, lock.getQueueLength());
123	<	lock.lock();
124	<	t1.start();
125	<	Thread.sleep(SHORT_DELAY_MS);
126	<	assertEquals(1, lock.getQueueLength());
127	<	t2.start();
128	<	Thread.sleep(SHORT_DELAY_MS);
129	<	assertEquals(2, lock.getQueueLength());
130	<	t1.interrupt();
131	<	Thread.sleep(SHORT_DELAY_MS);
132	<	assertEquals(1, lock.getQueueLength());
133	<	lock.unlock();
134	<	Thread.sleep(SHORT_DELAY_MS);
135	<	assertEquals(0, lock.getQueueLength());
136	<	t1.join();
137	<	t2.join();
149	<	} catch(Exception e){
150	<	unexpectedException();
151	<	}
152	<	}
121	>	assertFalse(lock.hasQueuedThreads());
122	>	lock.lock();
123	>	t1.start();
124	>	Thread.sleep(SHORT_DELAY_MS);
125	>	assertTrue(lock.hasQueuedThreads());
126	>	t2.start();
127	>	Thread.sleep(SHORT_DELAY_MS);
128	>	assertTrue(lock.hasQueuedThreads());
129	>	t1.interrupt();
130	>	Thread.sleep(SHORT_DELAY_MS);
131	>	assertTrue(lock.hasQueuedThreads());
132	>	lock.unlock();
133	>	Thread.sleep(SHORT_DELAY_MS);
134	>	assertFalse(lock.hasQueuedThreads());
135	>	t1.join();
136	>	t2.join();
137	>	}
138
139		/**
140	<	* getQueuedThreads includes waiting threads
140	>	* getQueueLength reports number of waiting threads
141		*/
142	<	public void testGetQueuedThreads() {
143	<	final PublicReentrantLock lock = new PublicReentrantLock();
142	>	public void testGetQueueLength() throws InterruptedException {
143	>	final ReentrantLock lock = new ReentrantLock();
144		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
145		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
146	<	try {
147	<	assertTrue(lock.getQueuedThreads().isEmpty());
148	<	lock.lock();
149	<	assertTrue(lock.getQueuedThreads().isEmpty());
150	<	t1.start();
151	<	Thread.sleep(SHORT_DELAY_MS);
152	<	assertTrue(lock.getQueuedThreads().contains(t1));
153	<	t2.start();
154	<	Thread.sleep(SHORT_DELAY_MS);
155	<	assertTrue(lock.getQueuedThreads().contains(t1));
156	<	assertTrue(lock.getQueuedThreads().contains(t2));
157	<	t1.interrupt();
158	<	Thread.sleep(SHORT_DELAY_MS);
159	<	assertFalse(lock.getQueuedThreads().contains(t1));
160	<	assertTrue(lock.getQueuedThreads().contains(t2));
161	<	lock.unlock();
162	<	Thread.sleep(SHORT_DELAY_MS);
178	<	assertTrue(lock.getQueuedThreads().isEmpty());
179	<	t1.join();
180	<	t2.join();
181	<	} catch(Exception e){
182	<	unexpectedException();
183	<	}
184	<	}
185	<
146	>	assertEquals(0, lock.getQueueLength());
147	>	lock.lock();
148	>	t1.start();
149	>	Thread.sleep(SHORT_DELAY_MS);
150	>	assertEquals(1, lock.getQueueLength());
151	>	t2.start();
152	>	Thread.sleep(SHORT_DELAY_MS);
153	>	assertEquals(2, lock.getQueueLength());
154	>	t1.interrupt();
155	>	Thread.sleep(SHORT_DELAY_MS);
156	>	assertEquals(1, lock.getQueueLength());
157	>	lock.unlock();
158	>	Thread.sleep(SHORT_DELAY_MS);
159	>	assertEquals(0, lock.getQueueLength());
160	>	t1.join();
161	>	t2.join();
162	>	}
163
164		/**
165	<	* timed trylock is interruptible.
165	>	* getQueueLength reports number of waiting threads
166		*/
167	<	public void testInterruptedException2() {
168	<	final ReentrantLock lock = new ReentrantLock();
169	<	lock.lock();
170	<	Thread t = new Thread(new Runnable() {
171	<	public void run() {
172	<	try {
173	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
174	<	threadShouldThrow();
175	<	} catch(InterruptedException success){}
176	<	}
177	<	});
178	<	try {
179	<	t.start();
180	<	t.interrupt();
181	<	} catch(Exception e){
182	<	unexpectedException();
183	<	}
167	>	public void testGetQueueLength_fair() throws InterruptedException {
168	>	final ReentrantLock lock = new ReentrantLock(true);
169	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
170	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
171	>	assertEquals(0, lock.getQueueLength());
172	>	lock.lock();
173	>	t1.start();
174	>	Thread.sleep(SHORT_DELAY_MS);
175	>	assertEquals(1, lock.getQueueLength());
176	>	t2.start();
177	>	Thread.sleep(SHORT_DELAY_MS);
178	>	assertEquals(2, lock.getQueueLength());
179	>	t1.interrupt();
180	>	Thread.sleep(SHORT_DELAY_MS);
181	>	assertEquals(1, lock.getQueueLength());
182	>	lock.unlock();
183	>	Thread.sleep(SHORT_DELAY_MS);
184	>	assertEquals(0, lock.getQueueLength());
185	>	t1.join();
186	>	t2.join();
187		}
188
209	–
189		/**
190	<	* Trylock on a locked lock fails
190	>	* hasQueuedThread(null) throws NPE
191		*/
192	<	public void testTryLockWhenLocked() {
193	<	final ReentrantLock lock = new ReentrantLock();
215	<	lock.lock();
216	<	Thread t = new Thread(new Runnable() {
217	<	public void run() {
218	<	threadAssertFalse(lock.tryLock());
219	<	}
220	<	});
192	>	public void testHasQueuedThreadNPE() {
193	>	final ReentrantLock sync = new ReentrantLock();
194		try {
195	<	t.start();
196	<	t.join();
197	<	lock.unlock();
198	<	} catch(Exception e){
226	<	unexpectedException();
227	<	}
228	<	}
195	>	sync.hasQueuedThread(null);
196	>	shouldThrow();
197	>	} catch (NullPointerException success) {}
198	>	}
199
200		/**
201	<	* Timed trylock on a locked lock times out
201	>	* hasQueuedThread reports whether a thread is queued.
202		*/
203	<	public void testTryLock_Timeout() {
204	<	final ReentrantLock lock = new ReentrantLock();
205	<	lock.lock();
206	<	Thread t = new Thread(new Runnable() {
207	<	public void run() {
208	<	try {
209	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
210	<	} catch (Exception ex) {
211	<	threadUnexpectedException();
212	<	}
213	<	}
214	<	});
215	<	try {
216	<	t.start();
217	<	t.join();
218	<	lock.unlock();
219	<	} catch(Exception e){
220	<	unexpectedException();
221	<	}
222	<	}
223	<
203	>	public void testHasQueuedThread() throws InterruptedException {
204	>	final ReentrantLock sync = new ReentrantLock();
205	>	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
206	>	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
207	>	assertFalse(sync.hasQueuedThread(t1));
208	>	assertFalse(sync.hasQueuedThread(t2));
209	>	sync.lock();
210	>	t1.start();
211	>	Thread.sleep(SHORT_DELAY_MS);
212	>	assertTrue(sync.hasQueuedThread(t1));
213	>	t2.start();
214	>	Thread.sleep(SHORT_DELAY_MS);
215	>	assertTrue(sync.hasQueuedThread(t1));
216	>	assertTrue(sync.hasQueuedThread(t2));
217	>	t1.interrupt();
218	>	Thread.sleep(SHORT_DELAY_MS);
219	>	assertFalse(sync.hasQueuedThread(t1));
220	>	assertTrue(sync.hasQueuedThread(t2));
221	>	sync.unlock();
222	>	Thread.sleep(SHORT_DELAY_MS);
223	>	assertFalse(sync.hasQueuedThread(t1));
224	>	Thread.sleep(SHORT_DELAY_MS);
225	>	assertFalse(sync.hasQueuedThread(t2));
226	>	t1.join();
227	>	t2.join();
228	>	}
229	>
230	>
231	>	/**
232	>	* getQueuedThreads includes waiting threads
233	>	*/
234	>	public void testGetQueuedThreads() throws InterruptedException {
235	>	final PublicReentrantLock lock = new PublicReentrantLock();
236	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
237	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
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();
257	>	}
258	>
259	>
260	>	/**
261	>	* timed tryLock is interruptible.
262	>	*/
263	>	public void testInterruptedException2() throws InterruptedException {
264	>	final ReentrantLock lock = new ReentrantLock();
265	>	lock.lock();
266	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
267	>	public void realRun() throws InterruptedException {
268	>	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
269	>	}});
270	>
271	>	t.start();
272	>	t.interrupt();
273	>	t.join();
274	>	}
275	>
276	>
277	>	/**
278	>	* TryLock on a locked lock fails
279	>	*/
280	>	public void testTryLockWhenLocked() throws InterruptedException {
281	>	final ReentrantLock lock = new ReentrantLock();
282	>	lock.lock();
283	>	Thread t = new Thread(new CheckedRunnable() {
284	>	public void realRun() {
285	>	threadAssertFalse(lock.tryLock());
286	>	}});
287	>
288	>	t.start();
289	>	t.join();
290	>	lock.unlock();
291	>	}
292	>
293	>	/**
294	>	* Timed tryLock on a locked lock times out
295	>	*/
296	>	public void testTryLock_Timeout() throws InterruptedException {
297	>	final ReentrantLock lock = new ReentrantLock();
298	>	lock.lock();
299	>	Thread t = new Thread(new CheckedRunnable() {
300	>	public void realRun() throws InterruptedException {
301	>	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
302	>	}});
303	>
304	>	t.start();
305	>	t.join();
306	>	lock.unlock();
307	>	}
308	>
309		/**
310		* getHoldCount returns number of recursive holds
311		*/
312		public void testGetHoldCount() {
313	<	ReentrantLock lock = new ReentrantLock();
314	<	for(int i = 1; i <= SIZE; i++) {
315	<	lock.lock();
316	<	assertEquals(i,lock.getHoldCount());
317	<	}
318	<	for(int i = SIZE; i > 0; i--) {
319	<	lock.unlock();
320	<	assertEquals(i-1,lock.getHoldCount());
321	<	}
313	>	ReentrantLock lock = new ReentrantLock();
314	>	for (int i = 1; i <= SIZE; i++) {
315	>	lock.lock();
316	>	assertEquals(i, lock.getHoldCount());
317	>	}
318	>	for (int i = SIZE; i > 0; i--) {
319	>	lock.unlock();
320	>	assertEquals(i-1, lock.getHoldCount());
321	>	}
322		}
323	<
324	<
323	>
324	>
325		/**
326		* isLocked is true when locked and false when not
327		*/
328	<	public void testIsLocked() {
329	<	final ReentrantLock lock = new ReentrantLock();
330	<	lock.lock();
331	<	assertTrue(lock.isLocked());
332	<	lock.unlock();
333	<	assertFalse(lock.isLocked());
334	<	Thread t = new Thread(new Runnable() {
335	<	public void run() {
336	<	lock.lock();
337	<	try {
338	<	Thread.sleep(SMALL_DELAY_MS);
339	<	}
340	<	catch(Exception e) {
341	<	threadUnexpectedException();
342	<	}
343	<	lock.unlock();
344	<	}
345	<	});
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	<	}
328	>	public void testIsLocked() throws InterruptedException {
329	>	final ReentrantLock lock = new ReentrantLock();
330	>	lock.lock();
331	>	assertTrue(lock.isLocked());
332	>	lock.unlock();
333	>	assertFalse(lock.isLocked());
334	>	Thread t = new Thread(new CheckedRunnable() {
335	>	public void realRun() throws InterruptedException {
336	>	lock.lock();
337	>	Thread.sleep(SMALL_DELAY_MS);
338	>	lock.unlock();
339	>	}});
340	>
341	>	t.start();
342	>	Thread.sleep(SHORT_DELAY_MS);
343	>	assertTrue(lock.isLocked());
344	>	t.join();
345	>	assertFalse(lock.isLocked());
346		}
347
348
349		/**
350		* lockInterruptibly is interruptible.
351		*/
352	<	public void testLockInterruptibly1() {
353	<	final ReentrantLock lock = new ReentrantLock();
354	<	lock.lock();
355	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
356	<	try {
357	<	t.start();
358	<	t.interrupt();
359	<	lock.unlock();
360	<	t.join();
361	<	} catch(Exception e){
362	<	unexpectedException();
317	<	}
318	<	}
352	>	public void testLockInterruptibly1() throws InterruptedException {
353	>	final ReentrantLock lock = new ReentrantLock();
354	>	lock.lock();
355	>	Thread t = new Thread(new InterruptedLockRunnable(lock));
356	>	t.start();
357	>	Thread.sleep(SHORT_DELAY_MS);
358	>	t.interrupt();
359	>	Thread.sleep(SHORT_DELAY_MS);
360	>	lock.unlock();
361	>	t.join();
362	>	}
363
364		/**
365		* lockInterruptibly succeeds when unlocked, else is interruptible
366		*/
367	<	public void testLockInterruptibly2() {
368	<	final ReentrantLock lock = new ReentrantLock();
369	<	try {
370	<	lock.lockInterruptibly();
371	<	} catch(Exception e) {
372	<	unexpectedException();
373	<	}
374	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
375	<	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	<	}
367	>	public void testLockInterruptibly2() throws InterruptedException {
368	>	final ReentrantLock lock = new ReentrantLock();
369	>	lock.lockInterruptibly();
370	>	Thread t = new Thread(new InterruptedLockRunnable(lock));
371	>	t.start();
372	>	t.interrupt();
373	>	assertTrue(lock.isLocked());
374	>	assertTrue(lock.isHeldByCurrentThread());
375	>	t.join();
376		}
377
378		/**
379		* Calling await without holding lock throws IllegalMonitorStateException
380		*/
381	<	public void testAwait_IllegalMonitor() {
382	<	final ReentrantLock lock = new ReentrantLock();
381	>	public void testAwait_IllegalMonitor() throws InterruptedException {
382	>	final ReentrantLock lock = new ReentrantLock();
383		final Condition c = lock.newCondition();
384		try {
385		c.await();
386		shouldThrow();
387	<	}
352	<	catch (IllegalMonitorStateException success) {
353	<	}
354	<	catch (Exception ex) {
355	<	unexpectedException();
356	<	}
387	>	} catch (IllegalMonitorStateException success) {}
388		}
389
390		/**
391		* Calling signal without holding lock throws IllegalMonitorStateException
392		*/
393		public void testSignal_IllegalMonitor() {
394	<	final ReentrantLock lock = new ReentrantLock();
394	>	final ReentrantLock lock = new ReentrantLock();
395		final Condition c = lock.newCondition();
396		try {
397		c.signal();
398		shouldThrow();
399	<	}
369	<	catch (IllegalMonitorStateException success) {
370	<	}
371	<	catch (Exception ex) {
372	<	unexpectedException();
373	<	}
399	>	} catch (IllegalMonitorStateException success) {}
400		}
401
402		/**
403		* awaitNanos without a signal times out
404		*/
405	<	public void testAwaitNanos_Timeout() {
406	<	final ReentrantLock lock = new ReentrantLock();
405	>	public void testAwaitNanos_Timeout() throws InterruptedException {
406	>	final ReentrantLock lock = new ReentrantLock();
407		final Condition c = lock.newCondition();
408	<	try {
409	<	lock.lock();
410	<	long t = c.awaitNanos(100);
411	<	assertTrue(t <= 0);
386	<	lock.unlock();
387	<	}
388	<	catch (Exception ex) {
389	<	unexpectedException();
390	<	}
408	>	lock.lock();
409	>	long t = c.awaitNanos(100);
410	>	assertTrue(t <= 0);
411	>	lock.unlock();
412		}
413
414		/**
415		*  timed await without a signal times out
416		*/
417	<	public void testAwait_Timeout() {
418	<	final ReentrantLock lock = new ReentrantLock();
417	>	public void testAwait_Timeout() throws InterruptedException {
418	>	final ReentrantLock lock = new ReentrantLock();
419		final Condition c = lock.newCondition();
420	<	try {
421	<	lock.lock();
422	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
402	<	lock.unlock();
403	<	}
404	<	catch (Exception ex) {
405	<	unexpectedException();
406	<	}
420	>	lock.lock();
421	>	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
422	>	lock.unlock();
423		}
424
425		/**
426		* awaitUntil without a signal times out
427		*/
428	<	public void testAwaitUntil_Timeout() {
429	<	final ReentrantLock lock = new ReentrantLock();
428	>	public void testAwaitUntil_Timeout() throws InterruptedException {
429	>	final ReentrantLock lock = new ReentrantLock();
430		final Condition c = lock.newCondition();
431	<	try {
432	<	lock.lock();
433	<	java.util.Date d = new java.util.Date();
434	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
419	<	lock.unlock();
420	<	}
421	<	catch (Exception ex) {
422	<	unexpectedException();
423	<	}
431	>	lock.lock();
432	>	java.util.Date d = new java.util.Date();
433	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
434	>	lock.unlock();
435		}
436
437		/**
438		* await returns when signalled
439		*/
440	<	public void testAwait() {
441	<	final ReentrantLock lock = new ReentrantLock();
442	<	final ReentrantLock.ConditionObject c = lock.newCondition();
443	<	Thread t = new Thread(new Runnable() {
444	<	public void run() {
445	<	try {
446	<	lock.lock();
447	<	c.await();
448	<	lock.unlock();
438	<	}
439	<	catch(InterruptedException e) {
440	<	threadUnexpectedException();
441	<	}
442	<	}
443	<	});
440	>	public void testAwait() throws InterruptedException {
441	>	final ReentrantLock lock = new ReentrantLock();
442	>	final Condition c = lock.newCondition();
443	>	Thread t = new Thread(new CheckedRunnable() {
444	>	public void realRun() throws InterruptedException {
445	>	lock.lock();
446	>	c.await();
447	>	lock.unlock();
448	>	}});
449
450	+	t.start();
451	+	Thread.sleep(SHORT_DELAY_MS);
452	+	lock.lock();
453	+	c.signal();
454	+	lock.unlock();
455	+	t.join(SHORT_DELAY_MS);
456	+	assertFalse(t.isAlive());
457	+	}
458	+
459	+	/**
460	+	* hasWaiters throws NPE if null
461	+	*/
462	+	public void testHasWaitersNPE() {
463	+	final ReentrantLock lock = new ReentrantLock();
464		try {
465	<	t.start();
466	<	Thread.sleep(SHORT_DELAY_MS);
467	<	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	<	}
465	>	lock.hasWaiters(null);
466	>	shouldThrow();
467	>	} catch (NullPointerException success) {}
468		}
469
470		/**
471	<	* hasWaiters returns true when a thread is waiting, else false
471	>	* getWaitQueueLength throws NPE if null
472		*/
473	<	public void testHasWaiters() {
474	<	final ReentrantLock lock = new ReentrantLock();
475	<	final ReentrantLock.ConditionObject c = lock.newCondition();
476	<	Thread t = new Thread(new Runnable() {
477	<	public void run() {
478	<	try {
479	<	lock.lock();
480	<	threadAssertFalse(c.hasWaiters());
470	<	threadAssertEquals(0, c.getWaitQueueLength());
471	<	c.await();
472	<	lock.unlock();
473	<	}
474	<	catch(InterruptedException e) {
475	<	threadUnexpectedException();
476	<	}
477	<	}
478	<	});
473	>	public void testGetWaitQueueLengthNPE() {
474	>	final ReentrantLock lock = new ReentrantLock();
475	>	try {
476	>	lock.getWaitQueueLength(null);
477	>	shouldThrow();
478	>	} catch (NullPointerException success) {}
479	>	}
480	>
481
482	+	/**
483	+	* getWaitingThreads throws NPE if null
484	+	*/
485	+	public void testGetWaitingThreadsNPE() {
486	+	final PublicReentrantLock lock = new PublicReentrantLock();
487		try {
488	<	t.start();
489	<	Thread.sleep(SHORT_DELAY_MS);
490	<	lock.lock();
491	<	assertTrue(c.hasWaiters());
492	<	assertEquals(1, c.getWaitQueueLength());
493	<	c.signal();
494	<	lock.unlock();
495	<	Thread.sleep(SHORT_DELAY_MS);
496	<	lock.lock();
497	<	assertFalse(c.hasWaiters());
498	<	assertEquals(0, c.getWaitQueueLength());
499	<	lock.unlock();
500	<	t.join(SHORT_DELAY_MS);
501	<	assertFalse(t.isAlive());
502	<	}
503	<	catch (Exception ex) {
504	<	unexpectedException();
505	<	}
488	>	lock.getWaitingThreads(null);
489	>	shouldThrow();
490	>	} catch (NullPointerException success) {}
491	>	}
492	>
493	>
494	>	/**
495	>	* hasWaiters throws IAE if not owned
496	>	*/
497	>	public void testHasWaitersIAE() {
498	>	final ReentrantLock lock = new ReentrantLock();
499	>	final Condition c = lock.newCondition();
500	>	final ReentrantLock lock2 = new ReentrantLock();
501	>	try {
502	>	lock2.hasWaiters(c);
503	>	shouldThrow();
504	>	} catch (IllegalArgumentException success) {}
505	>	}
506	>
507	>	/**
508	>	* hasWaiters throws IMSE if not locked
509	>	*/
510	>	public void testHasWaitersIMSE() {
511	>	final ReentrantLock lock = new ReentrantLock();
512	>	final Condition c = lock.newCondition();
513	>	try {
514	>	lock.hasWaiters(c);
515	>	shouldThrow();
516	>	} catch (IllegalMonitorStateException success) {}
517	>	}
518	>
519	>
520	>	/**
521	>	* getWaitQueueLength throws IAE if not owned
522	>	*/
523	>	public void testGetWaitQueueLengthIAE() {
524	>	final ReentrantLock lock = new ReentrantLock();
525	>	final Condition c = lock.newCondition();
526	>	final ReentrantLock lock2 = new ReentrantLock();
527	>	try {
528	>	lock2.getWaitQueueLength(c);
529	>	shouldThrow();
530	>	} catch (IllegalArgumentException success) {}
531	>	}
532	>
533	>	/**
534	>	* getWaitQueueLength throws IMSE if not locked
535	>	*/
536	>	public void testGetWaitQueueLengthIMSE() {
537	>	final ReentrantLock lock = new ReentrantLock();
538	>	final Condition c = lock.newCondition();
539	>	try {
540	>	lock.getWaitQueueLength(c);
541	>	shouldThrow();
542	>	} catch (IllegalMonitorStateException success) {}
543	>	}
544	>
545	>
546	>	/**
547	>	* getWaitingThreads throws IAE if not owned
548	>	*/
549	>	public void testGetWaitingThreadsIAE() {
550	>	final PublicReentrantLock lock = new PublicReentrantLock();
551	>	final Condition c = lock.newCondition();
552	>	final PublicReentrantLock lock2 = new PublicReentrantLock();
553	>	try {
554	>	lock2.getWaitingThreads(c);
555	>	shouldThrow();
556	>	} catch (IllegalArgumentException success) {}
557	>	}
558	>
559	>	/**
560	>	* getWaitingThreads throws IMSE if not locked
561	>	*/
562	>	public void testGetWaitingThreadsIMSE() {
563	>	final PublicReentrantLock lock = new PublicReentrantLock();
564	>	final Condition c = lock.newCondition();
565	>	try {
566	>	lock.getWaitingThreads(c);
567	>	shouldThrow();
568	>	} catch (IllegalMonitorStateException success) {}
569	>	}
570	>
571	>
572	>	/**
573	>	* hasWaiters returns true when a thread is waiting, else false
574	>	*/
575	>	public void testHasWaiters() throws InterruptedException {
576	>	final ReentrantLock lock = new ReentrantLock();
577	>	final Condition c = lock.newCondition();
578	>	Thread t = new Thread(new CheckedRunnable() {
579	>	public void realRun() throws InterruptedException {
580	>	lock.lock();
581	>	threadAssertFalse(lock.hasWaiters(c));
582	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
583	>	c.await();
584	>	lock.unlock();
585	>	}});
586	>
587	>	t.start();
588	>	Thread.sleep(SHORT_DELAY_MS);
589	>	lock.lock();
590	>	assertTrue(lock.hasWaiters(c));
591	>	assertEquals(1, lock.getWaitQueueLength(c));
592	>	c.signal();
593	>	lock.unlock();
594	>	Thread.sleep(SHORT_DELAY_MS);
595	>	lock.lock();
596	>	assertFalse(lock.hasWaiters(c));
597	>	assertEquals(0, lock.getWaitQueueLength(c));
598	>	lock.unlock();
599	>	t.join(SHORT_DELAY_MS);
600	>	assertFalse(t.isAlive());
601		}
602
603		/**
604		* getWaitQueueLength returns number of waiting threads
605		*/
606	<	public void testGetWaitQueueLength() {
607	<	final ReentrantLock lock = new ReentrantLock();
608	<	final ReentrantLock.ConditionObject c = lock.newCondition();
609	<	Thread t1 = new Thread(new Runnable() {
610	<	public void run() {
611	<	try {
612	<	lock.lock();
613	<	threadAssertFalse(c.hasWaiters());
614	<	threadAssertEquals(0, c.getWaitQueueLength());
615	<	c.await();
616	<	lock.unlock();
617	<	}
618	<	catch(InterruptedException e) {
619	<	threadUnexpectedException();
620	<	}
621	<	}
622	<	});
623	<
624	<	Thread t2 = new Thread(new Runnable() {
625	<	public void run() {
626	<	try {
627	<	lock.lock();
628	<	threadAssertTrue(c.hasWaiters());
629	<	threadAssertEquals(1, c.getWaitQueueLength());
630	<	c.await();
631	<	lock.unlock();
632	<	}
633	<	catch(InterruptedException e) {
634	<	threadUnexpectedException();
635	<	}
636	<	}
637	<	});
638	<
639	<	try {
640	<	t1.start();
641	<	Thread.sleep(SHORT_DELAY_MS);
642	<	t2.start();
643	<	Thread.sleep(SHORT_DELAY_MS);
644	<	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	<	}
606	>	public void testGetWaitQueueLength() throws InterruptedException {
607	>	final ReentrantLock lock = new ReentrantLock();
608	>	final Condition c = lock.newCondition();
609	>	Thread t1 = new Thread(new CheckedRunnable() {
610	>	public void realRun() throws InterruptedException {
611	>	lock.lock();
612	>	threadAssertFalse(lock.hasWaiters(c));
613	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
614	>	c.await();
615	>	lock.unlock();
616	>	}});
617	>
618	>	Thread t2 = new Thread(new CheckedRunnable() {
619	>	public void realRun() throws InterruptedException {
620	>	lock.lock();
621	>	threadAssertTrue(lock.hasWaiters(c));
622	>	threadAssertEquals(1, lock.getWaitQueueLength(c));
623	>	c.await();
624	>	lock.unlock();
625	>	}});
626	>
627	>	t1.start();
628	>	Thread.sleep(SHORT_DELAY_MS);
629	>	t2.start();
630	>	Thread.sleep(SHORT_DELAY_MS);
631	>	lock.lock();
632	>	assertTrue(lock.hasWaiters(c));
633	>	assertEquals(2, lock.getWaitQueueLength(c));
634	>	c.signalAll();
635	>	lock.unlock();
636	>	Thread.sleep(SHORT_DELAY_MS);
637	>	lock.lock();
638	>	assertFalse(lock.hasWaiters(c));
639	>	assertEquals(0, lock.getWaitQueueLength(c));
640	>	lock.unlock();
641	>	t1.join(SHORT_DELAY_MS);
642	>	t2.join(SHORT_DELAY_MS);
643	>	assertFalse(t1.isAlive());
644	>	assertFalse(t2.isAlive());
645		}
646
647		/**
648		* getWaitingThreads returns only and all waiting threads
649		*/
650	<	public void testGetWaitingThreads() {
651	<	final PublicReentrantLock lock = new PublicReentrantLock();
652	<	final PublicReentrantLock.PublicCondition c = (PublicReentrantLock.PublicCondition)lock.newCondition();
653	<	Thread t1 = new Thread(new Runnable() {
654	<	public void run() {
655	<	try {
656	<	lock.lock();
657	<	threadAssertTrue(c.getWaitingThreads().isEmpty());
658	<	c.await();
659	<	lock.unlock();
660	<	}
661	<	catch(InterruptedException e) {
662	<	threadUnexpectedException();
663	<	}
664	<	}
665	<	});
666	<
667	<	Thread t2 = new Thread(new Runnable() {
668	<	public void run() {
669	<	try {
670	<	lock.lock();
671	<	threadAssertFalse(c.getWaitingThreads().isEmpty());
672	<	c.await();
673	<	lock.unlock();
674	<	}
675	<	catch(InterruptedException e) {
676	<	threadUnexpectedException();
677	<	}
678	<	}
679	<	});
650	>	public void testGetWaitingThreads() throws InterruptedException {
651	>	final PublicReentrantLock lock = new PublicReentrantLock();
652	>	final Condition c = lock.newCondition();
653	>	Thread t1 = new Thread(new CheckedRunnable() {
654	>	public void realRun() throws InterruptedException {
655	>	lock.lock();
656	>	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
657	>	c.await();
658	>	lock.unlock();
659	>	}});
660	>
661	>	Thread t2 = new Thread(new CheckedRunnable() {
662	>	public void realRun() throws InterruptedException {
663	>	lock.lock();
664	>	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
665	>	c.await();
666	>	lock.unlock();
667	>	}});
668	>
669	>	lock.lock();
670	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
671	>	lock.unlock();
672	>	t1.start();
673	>	Thread.sleep(SHORT_DELAY_MS);
674	>	t2.start();
675	>	Thread.sleep(SHORT_DELAY_MS);
676	>	lock.lock();
677	>	assertTrue(lock.hasWaiters(c));
678	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
679	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
680	>	c.signalAll();
681	>	lock.unlock();
682	>	Thread.sleep(SHORT_DELAY_MS);
683	>	lock.lock();
684	>	assertFalse(lock.hasWaiters(c));
685	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
686	>	lock.unlock();
687	>	t1.join(SHORT_DELAY_MS);
688	>	t2.join(SHORT_DELAY_MS);
689	>	assertFalse(t1.isAlive());
690	>	assertFalse(t2.isAlive());
691	>	}
692	>
693	>	/** A helper class for uninterruptible wait tests */
694	>	class UninterruptibleThread extends Thread {
695	>	private ReentrantLock lock;
696	>	private Condition c;
697	>
698	>	public volatile boolean canAwake = false;
699	>	public volatile boolean interrupted = false;
700	>	public volatile boolean lockStarted = false;
701	>
702	>	public UninterruptibleThread(ReentrantLock lock, Condition c) {
703	>	this.lock = lock;
704	>	this.c = c;
705	>	}
706
707	<	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);
604	<	lock.lock();
605	<	assertTrue(c.hasWaiters());
606	<	assertTrue(c.getWaitingThreads().contains(t1));
607	<	assertTrue(c.getWaitingThreads().contains(t2));
608	<	c.signalAll();
609	<	lock.unlock();
610	<	Thread.sleep(SHORT_DELAY_MS);
707	>	public synchronized void run() {
708		lock.lock();
709	<	assertFalse(c.hasWaiters());
710	<	assertTrue(c.getWaitingThreads().isEmpty());
709	>	lockStarted = true;
710	>
711	>	while (!canAwake) {
712	>	c.awaitUninterruptibly();
713	>	}
714	>
715	>	interrupted = isInterrupted();
716		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();
717		}
718		}
719
720		/**
721		* awaitUninterruptibly doesn't abort on interrupt
722		*/
723	<	public void testAwaitUninterruptibly() {
724	<	final ReentrantLock lock = new ReentrantLock();
723	>	public void testAwaitUninterruptibly() throws InterruptedException {
724	>	final ReentrantLock lock = new ReentrantLock();
725		final Condition c = lock.newCondition();
726	<	Thread t = new Thread(new Runnable() {
727	<	public void run() {
728	<	lock.lock();
634	<	c.awaitUninterruptibly();
635	<	lock.unlock();
636	<	}
637	<	});
726	>	UninterruptibleThread thread = new UninterruptibleThread(lock, c);
727	>
728	>	thread.start();
729
730	+	while (!thread.lockStarted) {
731	+	Thread.sleep(100);
732	+	}
733	+
734	+	lock.lock();
735		try {
736	<	t.start();
737	<	Thread.sleep(SHORT_DELAY_MS);
642	<	t.interrupt();
643	<	lock.lock();
736	>	thread.interrupt();
737	>	thread.canAwake = true;
738		c.signal();
739	+	} finally {
740		lock.unlock();
646	–	assert(t.isInterrupted());
647	–	t.join(SHORT_DELAY_MS);
648	–	assertFalse(t.isAlive());
649	–	}
650	–	catch (Exception ex) {
651	–	unexpectedException();
741		}
742	+
743	+	thread.join();
744	+	assertTrue(thread.interrupted);
745	+	assertFalse(thread.isAlive());
746		}
747
748		/**
749		* await is interruptible
750		*/
751	<	public void testAwait_Interrupt() {
752	<	final ReentrantLock lock = new ReentrantLock();
751	>	public void testAwait_Interrupt() throws InterruptedException {
752	>	final ReentrantLock lock = new ReentrantLock();
753		final Condition c = lock.newCondition();
754	<	Thread t = new Thread(new Runnable() {
755	<	public void run() {
756	<	try {
757	<	lock.lock();
758	<	c.await();
759	<	lock.unlock();
760	<	threadShouldThrow();
761	<	}
762	<	catch(InterruptedException success) {
763	<	}
764	<	}
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	<	}
754	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
755	>	public void realRun() throws InterruptedException {
756	>	lock.lock();
757	>	c.await();
758	>	}});
759	>
760	>	t.start();
761	>	Thread.sleep(SHORT_DELAY_MS);
762	>	t.interrupt();
763	>	t.join(SHORT_DELAY_MS);
764	>	assertFalse(t.isAlive());
765		}
766
767		/**
768		* awaitNanos is interruptible
769		*/
770	<	public void testAwaitNanos_Interrupt() {
771	<	final ReentrantLock lock = new ReentrantLock();
770	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
771	>	final ReentrantLock lock = new ReentrantLock();
772		final Condition c = lock.newCondition();
773	<	Thread t = new Thread(new Runnable() {
774	<	public void run() {
775	<	try {
776	<	lock.lock();
777	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
778	<	lock.unlock();
779	<	threadShouldThrow();
780	<	}
781	<	catch(InterruptedException success) {
782	<	}
783	<	}
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	<	}
773	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
774	>	public void realRun() throws InterruptedException {
775	>	lock.lock();
776	>	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
777	>	}});
778	>
779	>	t.start();
780	>	Thread.sleep(SHORT_DELAY_MS);
781	>	t.interrupt();
782	>	t.join(SHORT_DELAY_MS);
783	>	assertFalse(t.isAlive());
784		}
785
786		/**
787		* awaitUntil is interruptible
788		*/
789	<	public void testAwaitUntil_Interrupt() {
790	<	final ReentrantLock lock = new ReentrantLock();
789	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
790	>	final ReentrantLock lock = new ReentrantLock();
791		final Condition c = lock.newCondition();
792	<	Thread t = new Thread(new Runnable() {
793	<	public void run() {
794	<	try {
795	<	lock.lock();
796	<	java.util.Date d = new java.util.Date();
797	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
798	<	lock.unlock();
799	<	threadShouldThrow();
800	<	}
801	<	catch(InterruptedException success) {
802	<	}
803	<	}
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	<	}
792	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
793	>	public void realRun() throws InterruptedException {
794	>	lock.lock();
795	>	java.util.Date d = new java.util.Date();
796	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
797	>	}});
798	>
799	>	t.start();
800	>	Thread.sleep(SHORT_DELAY_MS);
801	>	t.interrupt();
802	>	t.join(SHORT_DELAY_MS);
803	>	assertFalse(t.isAlive());
804		}
805
806		/**
807		* signalAll wakes up all threads
808		*/
809	<	public void testSignalAll() {
810	<	final ReentrantLock lock = new ReentrantLock();
809	>	public void testSignalAll() throws InterruptedException {
810	>	final ReentrantLock lock = new ReentrantLock();
811		final Condition c = lock.newCondition();
812	<	Thread t1 = new Thread(new Runnable() {
813	<	public void run() {
814	<	try {
815	<	lock.lock();
816	<	c.await();
817	<	lock.unlock();
818	<	}
819	<	catch(InterruptedException e) {
820	<	threadUnexpectedException();
821	<	}
822	<	}
823	<	});
824	<
825	<	Thread t2 = new Thread(new Runnable() {
826	<	public void run() {
827	<	try {
828	<	lock.lock();
829	<	c.await();
830	<	lock.unlock();
831	<	}
832	<	catch(InterruptedException e) {
833	<	threadUnexpectedException();
834	<	}
835	<	}
836	<	});
837	<
838	<	try {
839	<	t1.start();
840	<	t2.start();
841	<	Thread.sleep(SHORT_DELAY_MS);
842	<	lock.lock();
843	<	c.signalAll();
844	<	lock.unlock();
845	<	t1.join(SHORT_DELAY_MS);
846	<	t2.join(SHORT_DELAY_MS);
847	<	assertFalse(t1.isAlive());
848	<	assertFalse(t2.isAlive());
849	<	}
850	<	catch (Exception ex) {
851	<	unexpectedException();
852	<	}
812	>	Thread t1 = new Thread(new CheckedRunnable() {
813	>	public void realRun() throws InterruptedException {
814	>	lock.lock();
815	>	c.await();
816	>	lock.unlock();
817	>	}});
818	>
819	>	Thread t2 = new Thread(new CheckedRunnable() {
820	>	public void realRun() throws InterruptedException {
821	>	lock.lock();
822	>	c.await();
823	>	lock.unlock();
824	>	}});
825	>
826	>	t1.start();
827	>	t2.start();
828	>	Thread.sleep(SHORT_DELAY_MS);
829	>	lock.lock();
830	>	c.signalAll();
831	>	lock.unlock();
832	>	t1.join(SHORT_DELAY_MS);
833	>	t2.join(SHORT_DELAY_MS);
834	>	assertFalse(t1.isAlive());
835	>	assertFalse(t2.isAlive());
836	>	}
837	>
838	>	/**
839	>	* await after multiple reentrant locking preserves lock count
840	>	*/
841	>	public void testAwaitLockCount() throws InterruptedException {
842	>	final ReentrantLock lock = new ReentrantLock();
843	>	final Condition c = lock.newCondition();
844	>	Thread t1 = new Thread(new CheckedRunnable() {
845	>	public void realRun() throws InterruptedException {
846	>	lock.lock();
847	>	threadAssertEquals(1, lock.getHoldCount());
848	>	c.await();
849	>	threadAssertEquals(1, lock.getHoldCount());
850	>	lock.unlock();
851	>	}});
852	>
853	>	Thread t2 = new Thread(new CheckedRunnable() {
854	>	public void realRun() throws InterruptedException {
855	>	lock.lock();
856	>	lock.lock();
857	>	threadAssertEquals(2, lock.getHoldCount());
858	>	c.await();
859	>	threadAssertEquals(2, lock.getHoldCount());
860	>	lock.unlock();
861	>	lock.unlock();
862	>	}});
863	>
864	>	t1.start();
865	>	t2.start();
866	>	Thread.sleep(SHORT_DELAY_MS);
867	>	lock.lock();
868	>	c.signalAll();
869	>	lock.unlock();
870	>	t1.join(SHORT_DELAY_MS);
871	>	t2.join(SHORT_DELAY_MS);
872	>	assertFalse(t1.isAlive());
873	>	assertFalse(t2.isAlive());
874		}
875
876		/**
877		* A serialized lock deserializes as unlocked
878		*/
879	<	public void testSerialization() {
879	>	public void testSerialization() throws Exception {
880		ReentrantLock l = new ReentrantLock();
881		l.lock();
882		l.unlock();
883
884	<	try {
885	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
886	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
887	<	out.writeObject(l);
888	<	out.close();
889	<
890	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
891	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
892	<	ReentrantLock r = (ReentrantLock) in.readObject();
893	<	r.lock();
894	<	r.unlock();
895	<	} catch(Exception e){
896	<	e.printStackTrace();
897	<	unexpectedException();
898	<	}
884	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
885	>	ObjectOutputStream out =
886	>	new ObjectOutputStream(new BufferedOutputStream(bout));
887	>	out.writeObject(l);
888	>	out.close();
889	>
890	>	ByteArrayInputStream bin =
891	>	new ByteArrayInputStream(bout.toByteArray());
892	>	ObjectInputStream in =
893	>	new ObjectInputStream(new BufferedInputStream(bin));
894	>	ReentrantLock r = (ReentrantLock) in.readObject();
895	>	r.lock();
896	>	r.unlock();
897	>	}
898	>
899	>	/**
900	>	* toString indicates current lock state
901	>	*/
902	>	public void testToString() {
903	>	ReentrantLock lock = new ReentrantLock();
904	>	String us = lock.toString();
905	>	assertTrue(us.indexOf("Unlocked") >= 0);
906	>	lock.lock();
907	>	String ls = lock.toString();
908	>	assertTrue(ls.indexOf("Locked") >= 0);
909		}
910
911		}

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