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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 1.38 by jsr166, Sat Oct 9 19:30:35 2010 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.*;
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	<	* getQueueLength reports number of waiting threads
114	>	* hasQueuedThreads reports whether there are waiting threads
115		*/
116	<	public void testGetQueueLength() {
117	<	final ReentrantLock lock = new ReentrantLock();
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	<	try {
121	<	assertEquals(0, lock.getQueueLength());
122	<	lock.lock();
123	<	t1.start();
124	<	Thread.sleep(SHORT_DELAY_MS);
125	<	assertEquals(1, lock.getQueueLength());
126	<	t2.start();
127	<	Thread.sleep(SHORT_DELAY_MS);
128	<	assertEquals(2, lock.getQueueLength());
129	<	t1.interrupt();
130	<	Thread.sleep(SHORT_DELAY_MS);
131	<	assertEquals(1, lock.getQueueLength());
132	<	lock.unlock();
133	<	Thread.sleep(SHORT_DELAY_MS);
134	<	assertEquals(0, lock.getQueueLength());
135	<	t1.join();
136	<	t2.join();
149	<	} catch(Exception e){
150	<	unexpectedException();
151	<	}
152	<	}
120	>	assertFalse(lock.hasQueuedThreads());
121	>	lock.lock();
122	>	t1.start();
123	>	Thread.sleep(SHORT_DELAY_MS);
124	>	assertTrue(lock.hasQueuedThreads());
125	>	t2.start();
126	>	Thread.sleep(SHORT_DELAY_MS);
127	>	assertTrue(lock.hasQueuedThreads());
128	>	t1.interrupt();
129	>	Thread.sleep(SHORT_DELAY_MS);
130	>	assertTrue(lock.hasQueuedThreads());
131	>	lock.unlock();
132	>	Thread.sleep(SHORT_DELAY_MS);
133	>	assertFalse(lock.hasQueuedThreads());
134	>	t1.join();
135	>	t2.join();
136	>	}
137
138		/**
139	<	* getQueuedThreads includes waiting threads
139	>	* getQueueLength reports number of waiting threads
140		*/
141	<	public void testGetQueuedThreads() {
142	<	final PublicReentrantLock lock = new PublicReentrantLock();
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	<	try {
146	<	assertTrue(lock.getQueuedThreads().isEmpty());
147	<	lock.lock();
148	<	assertTrue(lock.getQueuedThreads().isEmpty());
149	<	t1.start();
150	<	Thread.sleep(SHORT_DELAY_MS);
151	<	assertTrue(lock.getQueuedThreads().contains(t1));
152	<	t2.start();
153	<	Thread.sleep(SHORT_DELAY_MS);
154	<	assertTrue(lock.getQueuedThreads().contains(t1));
155	<	assertTrue(lock.getQueuedThreads().contains(t2));
156	<	t1.interrupt();
157	<	Thread.sleep(SHORT_DELAY_MS);
158	<	assertFalse(lock.getQueuedThreads().contains(t1));
159	<	assertTrue(lock.getQueuedThreads().contains(t2));
160	<	lock.unlock();
161	<	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	<
145	>	assertEquals(0, lock.getQueueLength());
146	>	lock.lock();
147	>	t1.start();
148	>	Thread.sleep(SHORT_DELAY_MS);
149	>	assertEquals(1, lock.getQueueLength());
150	>	t2.start();
151	>	Thread.sleep(SHORT_DELAY_MS);
152	>	assertEquals(2, lock.getQueueLength());
153	>	t1.interrupt();
154	>	Thread.sleep(SHORT_DELAY_MS);
155	>	assertEquals(1, lock.getQueueLength());
156	>	lock.unlock();
157	>	Thread.sleep(SHORT_DELAY_MS);
158	>	assertEquals(0, lock.getQueueLength());
159	>	t1.join();
160	>	t2.join();
161	>	}
162
163		/**
164	<	* timed trylock is interruptible.
164	>	* getQueueLength reports number of waiting threads
165		*/
166	<	public void testInterruptedException2() {
167	<	final ReentrantLock lock = new ReentrantLock();
168	<	lock.lock();
169	<	Thread t = new Thread(new Runnable() {
170	<	public void run() {
171	<	try {
172	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
173	<	threadShouldThrow();
174	<	} catch(InterruptedException success){}
175	<	}
176	<	});
177	<	try {
178	<	t.start();
179	<	t.interrupt();
180	<	} catch(Exception e){
181	<	unexpectedException();
182	<	}
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	>	Thread.sleep(SHORT_DELAY_MS);
174	>	assertEquals(1, lock.getQueueLength());
175	>	t2.start();
176	>	Thread.sleep(SHORT_DELAY_MS);
177	>	assertEquals(2, lock.getQueueLength());
178	>	t1.interrupt();
179	>	Thread.sleep(SHORT_DELAY_MS);
180	>	assertEquals(1, lock.getQueueLength());
181	>	lock.unlock();
182	>	Thread.sleep(SHORT_DELAY_MS);
183	>	assertEquals(0, lock.getQueueLength());
184	>	t1.join();
185	>	t2.join();
186		}
187
209	–
188		/**
189	<	* Trylock on a locked lock fails
189	>	* hasQueuedThread(null) throws NPE
190		*/
191	<	public void testTryLockWhenLocked() {
192	<	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	<	});
191	>	public void testHasQueuedThreadNPE() {
192	>	final ReentrantLock sync = new ReentrantLock();
193		try {
194	<	t.start();
195	<	t.join();
196	<	lock.unlock();
197	<	} catch(Exception e){
226	<	unexpectedException();
227	<	}
228	<	}
194	>	sync.hasQueuedThread(null);
195	>	shouldThrow();
196	>	} catch (NullPointerException success) {}
197	>	}
198
199		/**
200	<	* Timed trylock on a locked lock times out
200	>	* hasQueuedThread reports whether a thread is queued.
201		*/
202	<	public void testTryLock_Timeout() {
203	<	final ReentrantLock lock = new ReentrantLock();
204	<	lock.lock();
205	<	Thread t = new Thread(new Runnable() {
206	<	public void run() {
207	<	try {
208	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
209	<	} catch (Exception ex) {
210	<	threadUnexpectedException();
211	<	}
212	<	}
213	<	});
214	<	try {
215	<	t.start();
216	<	t.join();
217	<	lock.unlock();
218	<	} catch(Exception e){
219	<	unexpectedException();
220	<	}
221	<	}
222	<
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	>	Thread.sleep(SHORT_DELAY_MS);
211	>	assertTrue(sync.hasQueuedThread(t1));
212	>	t2.start();
213	>	Thread.sleep(SHORT_DELAY_MS);
214	>	assertTrue(sync.hasQueuedThread(t1));
215	>	assertTrue(sync.hasQueuedThread(t2));
216	>	t1.interrupt();
217	>	Thread.sleep(SHORT_DELAY_MS);
218	>	assertFalse(sync.hasQueuedThread(t1));
219	>	assertTrue(sync.hasQueuedThread(t2));
220	>	sync.unlock();
221	>	Thread.sleep(SHORT_DELAY_MS);
222	>	assertFalse(sync.hasQueuedThread(t1));
223	>	Thread.sleep(SHORT_DELAY_MS);
224	>	assertFalse(sync.hasQueuedThread(t2));
225	>	t1.join();
226	>	t2.join();
227	>	}
228	>
229	>
230	>	/**
231	>	* getQueuedThreads includes waiting threads
232	>	*/
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	>	assertTrue(lock.getQueuedThreads().isEmpty());
238	>	lock.lock();
239	>	assertTrue(lock.getQueuedThreads().isEmpty());
240	>	t1.start();
241	>	Thread.sleep(SHORT_DELAY_MS);
242	>	assertTrue(lock.getQueuedThreads().contains(t1));
243	>	t2.start();
244	>	Thread.sleep(SHORT_DELAY_MS);
245	>	assertTrue(lock.getQueuedThreads().contains(t1));
246	>	assertTrue(lock.getQueuedThreads().contains(t2));
247	>	t1.interrupt();
248	>	Thread.sleep(SHORT_DELAY_MS);
249	>	assertFalse(lock.getQueuedThreads().contains(t1));
250	>	assertTrue(lock.getQueuedThreads().contains(t2));
251	>	lock.unlock();
252	>	Thread.sleep(SHORT_DELAY_MS);
253	>	assertTrue(lock.getQueuedThreads().isEmpty());
254	>	t1.join();
255	>	t2.join();
256	>	}
257	>
258	>
259	>	/**
260	>	* timed tryLock is interruptible.
261	>	*/
262	>	public void testInterruptedException2() throws InterruptedException {
263	>	final ReentrantLock lock = new ReentrantLock();
264	>	lock.lock();
265	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
266	>	public void realRun() throws InterruptedException {
267	>	lock.tryLock(MEDIUM_DELAY_MS,MILLISECONDS);
268	>	}});
269	>
270	>	t.start();
271	>	Thread.sleep(SHORT_DELAY_MS);
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	>	assertFalse(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	>	assertFalse(lock.tryLock(1, 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 {
376	<	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	>	Thread.sleep(SHORT_DELAY_MS);
373	>	t.interrupt();
374	>	assertTrue(lock.isLocked());
375	>	assertTrue(lock.isHeldByCurrentThread());
376	>	t.join();
377		}
378
379		/**
380		* Calling await without holding lock throws IllegalMonitorStateException
381		*/
382	<	public void testAwait_IllegalMonitor() {
383	<	final ReentrantLock lock = new ReentrantLock();
382	>	public void testAwait_IllegalMonitor() throws InterruptedException {
383	>	final ReentrantLock lock = new ReentrantLock();
384		final Condition c = lock.newCondition();
385		try {
386		c.await();
387		shouldThrow();
388	<	}
352	<	catch (IllegalMonitorStateException success) {
353	<	}
354	<	catch (Exception ex) {
355	<	unexpectedException();
356	<	}
388	>	} catch (IllegalMonitorStateException success) {}
389		}
390
391		/**
392		* Calling signal without holding lock throws IllegalMonitorStateException
393		*/
394		public void testSignal_IllegalMonitor() {
395	<	final ReentrantLock lock = new ReentrantLock();
395	>	final ReentrantLock lock = new ReentrantLock();
396		final Condition c = lock.newCondition();
397		try {
398		c.signal();
399		shouldThrow();
400	<	}
369	<	catch (IllegalMonitorStateException success) {
370	<	}
371	<	catch (Exception ex) {
372	<	unexpectedException();
373	<	}
400	>	} catch (IllegalMonitorStateException success) {}
401		}
402
403		/**
404		* awaitNanos without a signal times out
405		*/
406	<	public void testAwaitNanos_Timeout() {
407	<	final ReentrantLock lock = new ReentrantLock();
406	>	public void testAwaitNanos_Timeout() throws InterruptedException {
407	>	final ReentrantLock lock = new ReentrantLock();
408	>	final Condition c = lock.newCondition();
409	>	lock.lock();
410	>	long t = c.awaitNanos(100);
411	>	assertTrue(t <= 0);
412	>	lock.unlock();
413	>	}
414	>
415	>	/**
416	>	* timed await without a signal times out
417	>	*/
418	>	public void testAwait_Timeout() throws InterruptedException {
419	>	final ReentrantLock lock = new ReentrantLock();
420	>	final Condition c = lock.newCondition();
421	>	lock.lock();
422	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
423	>	lock.unlock();
424	>	}
425	>
426	>	/**
427	>	* awaitUntil without a signal times out
428	>	*/
429	>	public void testAwaitUntil_Timeout() throws InterruptedException {
430	>	final ReentrantLock lock = new ReentrantLock();
431	>	final Condition c = lock.newCondition();
432	>	lock.lock();
433	>	java.util.Date d = new java.util.Date();
434	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
435	>	lock.unlock();
436	>	}
437	>
438	>	/**
439	>	* await returns when signalled
440	>	*/
441	>	public void testAwait() throws InterruptedException {
442	>	final ReentrantLock lock = new ReentrantLock();
443		final Condition c = lock.newCondition();
444	+	Thread t = new Thread(new CheckedRunnable() {
445	+	public void realRun() throws InterruptedException {
446	+	lock.lock();
447	+	c.await();
448	+	lock.unlock();
449	+	}});
450	+
451	+	t.start();
452	+	Thread.sleep(SHORT_DELAY_MS);
453	+	lock.lock();
454	+	c.signal();
455	+	lock.unlock();
456	+	t.join(SHORT_DELAY_MS);
457	+	assertFalse(t.isAlive());
458	+	}
459	+
460	+	/**
461	+	* hasWaiters throws NPE if null
462	+	*/
463	+	public void testHasWaitersNPE() {
464	+	final ReentrantLock lock = new ReentrantLock();
465		try {
466	<	lock.lock();
467	<	long t = c.awaitNanos(100);
468	<	assertTrue(t <= 0);
469	<	lock.unlock();
470	<	}
471	<	catch (Exception ex) {
472	<	unexpectedException();
473	<	}
466	>	lock.hasWaiters(null);
467	>	shouldThrow();
468	>	} catch (NullPointerException success) {}
469	>	}
470	>
471	>	/**
472	>	* getWaitQueueLength throws NPE if null
473	>	*/
474	>	public void testGetWaitQueueLengthNPE() {
475	>	final ReentrantLock lock = new ReentrantLock();
476	>	try {
477	>	lock.getWaitQueueLength(null);
478	>	shouldThrow();
479	>	} catch (NullPointerException success) {}
480		}
481
482	+
483		/**
484	<	*  timed await without a signal times out
484	>	* getWaitingThreads throws NPE if null
485		*/
486	<	public void testAwait_Timeout() {
487	<	final ReentrantLock lock = new ReentrantLock();
486	>	public void testGetWaitingThreadsNPE() {
487	>	final PublicReentrantLock lock = new PublicReentrantLock();
488	>	try {
489	>	lock.getWaitingThreads(null);
490	>	shouldThrow();
491	>	} catch (NullPointerException success) {}
492	>	}
493	>
494	>
495	>	/**
496	>	* hasWaiters throws IAE if not owned
497	>	*/
498	>	public void testHasWaitersIAE() {
499	>	final ReentrantLock lock = new ReentrantLock();
500		final Condition c = lock.newCondition();
501	+	final ReentrantLock lock2 = new ReentrantLock();
502		try {
503	<	lock.lock();
504	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
505	<	lock.unlock();
403	<	}
404	<	catch (Exception ex) {
405	<	unexpectedException();
406	<	}
503	>	lock2.hasWaiters(c);
504	>	shouldThrow();
505	>	} catch (IllegalArgumentException success) {}
506		}
507
508		/**
509	<	* awaitUntil without a signal times out
509	>	* hasWaiters throws IMSE if not locked
510		*/
511	<	public void testAwaitUntil_Timeout() {
512	<	final ReentrantLock lock = new ReentrantLock();
511	>	public void testHasWaitersIMSE() {
512	>	final ReentrantLock lock = new ReentrantLock();
513		final Condition c = lock.newCondition();
514		try {
515	<	lock.lock();
516	<	java.util.Date d = new java.util.Date();
517	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
419	<	lock.unlock();
420	<	}
421	<	catch (Exception ex) {
422	<	unexpectedException();
423	<	}
515	>	lock.hasWaiters(c);
516	>	shouldThrow();
517	>	} catch (IllegalMonitorStateException success) {}
518		}
519
520	+
521		/**
522	<	* await returns when signalled
522	>	* getWaitQueueLength throws IAE if not owned
523		*/
524	<	public void testAwait() {
525	<	final ReentrantLock lock = new ReentrantLock();
526	<	final ReentrantLock.ConditionObject c = lock.newCondition();
527	<	Thread t = new Thread(new Runnable() {
528	<	public void run() {
529	<	try {
530	<	lock.lock();
531	<	c.await();
532	<	lock.unlock();
438	<	}
439	<	catch(InterruptedException e) {
440	<	threadUnexpectedException();
441	<	}
442	<	}
443	<	});
524	>	public void testGetWaitQueueLengthIAE() {
525	>	final ReentrantLock lock = new ReentrantLock();
526	>	final Condition c = lock.newCondition();
527	>	final ReentrantLock lock2 = new ReentrantLock();
528	>	try {
529	>	lock2.getWaitQueueLength(c);
530	>	shouldThrow();
531	>	} catch (IllegalArgumentException success) {}
532	>	}
533
534	+	/**
535	+	* getWaitQueueLength throws IMSE if not locked
536	+	*/
537	+	public void testGetWaitQueueLengthIMSE() {
538	+	final ReentrantLock lock = new ReentrantLock();
539	+	final Condition c = lock.newCondition();
540		try {
541	<	t.start();
542	<	Thread.sleep(SHORT_DELAY_MS);
543	<	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	<	}
541	>	lock.getWaitQueueLength(c);
542	>	shouldThrow();
543	>	} catch (IllegalMonitorStateException success) {}
544		}
545
546	+
547		/**
548	<	* hasWaiters returns true when a thread is waiting, else false
548	>	* getWaitingThreads throws IAE if not owned
549		*/
550	<	public void testHasWaiters() {
551	<	final ReentrantLock lock = new ReentrantLock();
552	<	final ReentrantLock.ConditionObject c = lock.newCondition();
553	<	Thread t = new Thread(new Runnable() {
554	<	public void run() {
555	<	try {
556	<	lock.lock();
557	<	threadAssertFalse(c.hasWaiters());
558	<	threadAssertEquals(0, c.getWaitQueueLength());
471	<	c.await();
472	<	lock.unlock();
473	<	}
474	<	catch(InterruptedException e) {
475	<	threadUnexpectedException();
476	<	}
477	<	}
478	<	});
550	>	public void testGetWaitingThreadsIAE() {
551	>	final PublicReentrantLock lock = new PublicReentrantLock();
552	>	final Condition c = lock.newCondition();
553	>	final PublicReentrantLock lock2 = new PublicReentrantLock();
554	>	try {
555	>	lock2.getWaitingThreads(c);
556	>	shouldThrow();
557	>	} catch (IllegalArgumentException success) {}
558	>	}
559
560	+	/**
561	+	* getWaitingThreads throws IMSE if not locked
562	+	*/
563	+	public void testGetWaitingThreadsIMSE() {
564	+	final PublicReentrantLock lock = new PublicReentrantLock();
565	+	final Condition c = lock.newCondition();
566		try {
567	<	t.start();
568	<	Thread.sleep(SHORT_DELAY_MS);
569	<	lock.lock();
570	<	assertTrue(c.hasWaiters());
571	<	assertEquals(1, c.getWaitQueueLength());
572	<	c.signal();
573	<	lock.unlock();
574	<	Thread.sleep(SHORT_DELAY_MS);
575	<	lock.lock();
576	<	assertFalse(c.hasWaiters());
577	<	assertEquals(0, c.getWaitQueueLength());
578	<	lock.unlock();
579	<	t.join(SHORT_DELAY_MS);
580	<	assertFalse(t.isAlive());
581	<	}
582	<	catch (Exception ex) {
583	<	unexpectedException();
584	<	}
567	>	lock.getWaitingThreads(c);
568	>	shouldThrow();
569	>	} catch (IllegalMonitorStateException success) {}
570	>	}
571	>
572	>
573	>	/**
574	>	* hasWaiters returns true when a thread is waiting, else false
575	>	*/
576	>	public void testHasWaiters() throws InterruptedException {
577	>	final ReentrantLock lock = new ReentrantLock();
578	>	final Condition c = lock.newCondition();
579	>	Thread t = new Thread(new CheckedRunnable() {
580	>	public void realRun() throws InterruptedException {
581	>	lock.lock();
582	>	assertFalse(lock.hasWaiters(c));
583	>	assertEquals(0, lock.getWaitQueueLength(c));
584	>	c.await();
585	>	lock.unlock();
586	>	}});
587	>
588	>	t.start();
589	>	Thread.sleep(SHORT_DELAY_MS);
590	>	lock.lock();
591	>	assertTrue(lock.hasWaiters(c));
592	>	assertEquals(1, lock.getWaitQueueLength(c));
593	>	c.signal();
594	>	lock.unlock();
595	>	Thread.sleep(SHORT_DELAY_MS);
596	>	lock.lock();
597	>	assertFalse(lock.hasWaiters(c));
598	>	assertEquals(0, lock.getWaitQueueLength(c));
599	>	lock.unlock();
600	>	t.join(SHORT_DELAY_MS);
601	>	assertFalse(t.isAlive());
602		}
603
604		/**
605		* getWaitQueueLength returns number of waiting threads
606		*/
607	<	public void testGetWaitQueueLength() {
608	<	final ReentrantLock lock = new ReentrantLock();
609	<	final ReentrantLock.ConditionObject c = lock.newCondition();
610	<	Thread t1 = new Thread(new Runnable() {
611	<	public void run() {
612	<	try {
613	<	lock.lock();
614	<	threadAssertFalse(c.hasWaiters());
615	<	threadAssertEquals(0, c.getWaitQueueLength());
616	<	c.await();
617	<	lock.unlock();
618	<	}
619	<	catch(InterruptedException e) {
620	<	threadUnexpectedException();
621	<	}
622	<	}
623	<	});
624	<
625	<	Thread t2 = new Thread(new Runnable() {
626	<	public void run() {
627	<	try {
628	<	lock.lock();
629	<	threadAssertTrue(c.hasWaiters());
630	<	threadAssertEquals(1, c.getWaitQueueLength());
631	<	c.await();
632	<	lock.unlock();
633	<	}
634	<	catch(InterruptedException e) {
635	<	threadUnexpectedException();
636	<	}
637	<	}
638	<	});
639	<
640	<	try {
641	<	t1.start();
642	<	Thread.sleep(SHORT_DELAY_MS);
643	<	t2.start();
644	<	Thread.sleep(SHORT_DELAY_MS);
645	<	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	<	}
607	>	public void testGetWaitQueueLength() throws InterruptedException {
608	>	final ReentrantLock lock = new ReentrantLock();
609	>	final Condition c = lock.newCondition();
610	>	Thread t1 = new Thread(new CheckedRunnable() {
611	>	public void realRun() throws InterruptedException {
612	>	lock.lock();
613	>	assertFalse(lock.hasWaiters(c));
614	>	assertEquals(0, lock.getWaitQueueLength(c));
615	>	c.await();
616	>	lock.unlock();
617	>	}});
618	>
619	>	Thread t2 = new Thread(new CheckedRunnable() {
620	>	public void realRun() throws InterruptedException {
621	>	lock.lock();
622	>	assertTrue(lock.hasWaiters(c));
623	>	assertEquals(1, lock.getWaitQueueLength(c));
624	>	c.await();
625	>	lock.unlock();
626	>	}});
627	>
628	>	t1.start();
629	>	Thread.sleep(SHORT_DELAY_MS);
630	>	t2.start();
631	>	Thread.sleep(SHORT_DELAY_MS);
632	>	lock.lock();
633	>	assertTrue(lock.hasWaiters(c));
634	>	assertEquals(2, lock.getWaitQueueLength(c));
635	>	c.signalAll();
636	>	lock.unlock();
637	>	Thread.sleep(SHORT_DELAY_MS);
638	>	lock.lock();
639	>	assertFalse(lock.hasWaiters(c));
640	>	assertEquals(0, lock.getWaitQueueLength(c));
641	>	lock.unlock();
642	>	t1.join(SHORT_DELAY_MS);
643	>	t2.join(SHORT_DELAY_MS);
644	>	assertFalse(t1.isAlive());
645	>	assertFalse(t2.isAlive());
646		}
647
648		/**
649		* getWaitingThreads returns only and all waiting threads
650		*/
651	<	public void testGetWaitingThreads() {
652	<	final PublicReentrantLock lock = new PublicReentrantLock();
653	<	final PublicReentrantLock.PublicCondition c = (PublicReentrantLock.PublicCondition)lock.newCondition();
654	<	Thread t1 = new Thread(new Runnable() {
655	<	public void run() {
656	<	try {
657	<	lock.lock();
658	<	threadAssertTrue(c.getWaitingThreads().isEmpty());
659	<	c.await();
660	<	lock.unlock();
661	<	}
662	<	catch(InterruptedException e) {
663	<	threadUnexpectedException();
664	<	}
665	<	}
666	<	});
667	<
668	<	Thread t2 = new Thread(new Runnable() {
669	<	public void run() {
670	<	try {
671	<	lock.lock();
672	<	threadAssertFalse(c.getWaitingThreads().isEmpty());
673	<	c.await();
674	<	lock.unlock();
675	<	}
676	<	catch(InterruptedException e) {
677	<	threadUnexpectedException();
678	<	}
679	<	}
680	<	});
651	>	public void testGetWaitingThreads() throws InterruptedException {
652	>	final PublicReentrantLock lock = new PublicReentrantLock();
653	>	final Condition c = lock.newCondition();
654	>	Thread t1 = new Thread(new CheckedRunnable() {
655	>	public void realRun() throws InterruptedException {
656	>	lock.lock();
657	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
658	>	c.await();
659	>	lock.unlock();
660	>	}});
661	>
662	>	Thread t2 = new Thread(new CheckedRunnable() {
663	>	public void realRun() throws InterruptedException {
664	>	lock.lock();
665	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
666	>	c.await();
667	>	lock.unlock();
668	>	}});
669	>
670	>	lock.lock();
671	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
672	>	lock.unlock();
673	>	t1.start();
674	>	Thread.sleep(SHORT_DELAY_MS);
675	>	t2.start();
676	>	Thread.sleep(SHORT_DELAY_MS);
677	>	lock.lock();
678	>	assertTrue(lock.hasWaiters(c));
679	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
680	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
681	>	c.signalAll();
682	>	lock.unlock();
683	>	Thread.sleep(SHORT_DELAY_MS);
684	>	lock.lock();
685	>	assertFalse(lock.hasWaiters(c));
686	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
687	>	lock.unlock();
688	>	t1.join(SHORT_DELAY_MS);
689	>	t2.join(SHORT_DELAY_MS);
690	>	assertFalse(t1.isAlive());
691	>	assertFalse(t2.isAlive());
692	>	}
693	>
694	>	/** A helper class for uninterruptible wait tests */
695	>	class UninterruptibleThread extends Thread {
696	>	private ReentrantLock lock;
697	>	private Condition c;
698	>
699	>	public volatile boolean canAwake = false;
700	>	public volatile boolean interrupted = false;
701	>	public volatile boolean lockStarted = false;
702	>
703	>	public UninterruptibleThread(ReentrantLock lock, Condition c) {
704	>	this.lock = lock;
705	>	this.c = c;
706	>	}
707
708	<	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);
708	>	public synchronized void run() {
709		lock.lock();
710	<	assertFalse(c.hasWaiters());
711	<	assertTrue(c.getWaitingThreads().isEmpty());
710	>	lockStarted = true;
711	>
712	>	while (!canAwake) {
713	>	c.awaitUninterruptibly();
714	>	}
715	>
716	>	interrupted = isInterrupted();
717		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();
718		}
719		}
720
721		/**
722		* awaitUninterruptibly doesn't abort on interrupt
723		*/
724	<	public void testAwaitUninterruptibly() {
725	<	final ReentrantLock lock = new ReentrantLock();
724	>	public void testAwaitUninterruptibly() throws InterruptedException {
725	>	final ReentrantLock lock = new ReentrantLock();
726		final Condition c = lock.newCondition();
727	<	Thread t = new Thread(new Runnable() {
728	<	public void run() {
729	<	lock.lock();
634	<	c.awaitUninterruptibly();
635	<	lock.unlock();
636	<	}
637	<	});
727	>	UninterruptibleThread thread = new UninterruptibleThread(lock, c);
728	>
729	>	thread.start();
730
731	+	while (!thread.lockStarted) {
732	+	Thread.sleep(100);
733	+	}
734	+
735	+	lock.lock();
736		try {
737	<	t.start();
738	<	Thread.sleep(SHORT_DELAY_MS);
642	<	t.interrupt();
643	<	lock.lock();
737	>	thread.interrupt();
738	>	thread.canAwake = true;
739		c.signal();
740	+	} finally {
741		lock.unlock();
646	–	assert(t.isInterrupted());
647	–	t.join(SHORT_DELAY_MS);
648	–	assertFalse(t.isAlive());
649	–	}
650	–	catch (Exception ex) {
651	–	unexpectedException();
742		}
743	+
744	+	thread.join();
745	+	assertTrue(thread.interrupted);
746	+	assertFalse(thread.isAlive());
747		}
748
749		/**
750		* await is interruptible
751		*/
752	<	public void testAwait_Interrupt() {
753	<	final ReentrantLock lock = new ReentrantLock();
752	>	public void testAwait_Interrupt() throws InterruptedException {
753	>	final ReentrantLock lock = new ReentrantLock();
754		final Condition c = lock.newCondition();
755	<	Thread t = new Thread(new Runnable() {
756	<	public void run() {
757	<	try {
758	<	lock.lock();
759	<	c.await();
760	<	lock.unlock();
761	<	threadShouldThrow();
762	<	}
763	<	catch(InterruptedException success) {
764	<	}
765	<	}
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	<	}
755	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
756	>	public void realRun() throws InterruptedException {
757	>	lock.lock();
758	>	c.await();
759	>	}});
760	>
761	>	t.start();
762	>	Thread.sleep(SHORT_DELAY_MS);
763	>	t.interrupt();
764	>	t.join(SHORT_DELAY_MS);
765	>	assertFalse(t.isAlive());
766		}
767
768		/**
769		* awaitNanos is interruptible
770		*/
771	<	public void testAwaitNanos_Interrupt() {
772	<	final ReentrantLock lock = new ReentrantLock();
771	>	public void testAwaitNanos_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	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
779	<	lock.unlock();
780	<	threadShouldThrow();
781	<	}
782	<	catch(InterruptedException success) {
783	<	}
784	<	}
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	<	}
774	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
775	>	public void realRun() throws InterruptedException {
776	>	lock.lock();
777	>	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
778	>	}});
779	>
780	>	t.start();
781	>	Thread.sleep(SHORT_DELAY_MS);
782	>	t.interrupt();
783	>	t.join(SHORT_DELAY_MS);
784	>	assertFalse(t.isAlive());
785		}
786
787		/**
788		* awaitUntil is interruptible
789		*/
790	<	public void testAwaitUntil_Interrupt() {
791	<	final ReentrantLock lock = new ReentrantLock();
790	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
791	>	final ReentrantLock lock = new ReentrantLock();
792		final Condition c = lock.newCondition();
793	<	Thread t = new Thread(new Runnable() {
794	<	public void run() {
795	<	try {
796	<	lock.lock();
797	<	java.util.Date d = new java.util.Date();
798	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
799	<	lock.unlock();
800	<	threadShouldThrow();
801	<	}
802	<	catch(InterruptedException success) {
803	<	}
804	<	}
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	<	}
793	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
794	>	public void realRun() throws InterruptedException {
795	>	lock.lock();
796	>	java.util.Date d = new java.util.Date();
797	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
798	>	}});
799	>
800	>	t.start();
801	>	Thread.sleep(SHORT_DELAY_MS);
802	>	t.interrupt();
803	>	t.join(SHORT_DELAY_MS);
804	>	assertFalse(t.isAlive());
805		}
806
807		/**
808		* signalAll wakes up all threads
809		*/
810	<	public void testSignalAll() {
811	<	final ReentrantLock lock = new ReentrantLock();
810	>	public void testSignalAll() throws InterruptedException {
811	>	final ReentrantLock lock = new ReentrantLock();
812		final Condition c = lock.newCondition();
813	<	Thread t1 = new Thread(new Runnable() {
814	<	public void run() {
815	<	try {
816	<	lock.lock();
817	<	c.await();
818	<	lock.unlock();
819	<	}
820	<	catch(InterruptedException e) {
821	<	threadUnexpectedException();
822	<	}
823	<	}
824	<	});
825	<
826	<	Thread t2 = new Thread(new Runnable() {
827	<	public void run() {
828	<	try {
829	<	lock.lock();
830	<	c.await();
831	<	lock.unlock();
832	<	}
833	<	catch(InterruptedException e) {
834	<	threadUnexpectedException();
835	<	}
836	<	}
837	<	});
838	<
839	<	try {
840	<	t1.start();
841	<	t2.start();
842	<	Thread.sleep(SHORT_DELAY_MS);
843	<	lock.lock();
844	<	c.signalAll();
845	<	lock.unlock();
846	<	t1.join(SHORT_DELAY_MS);
847	<	t2.join(SHORT_DELAY_MS);
848	<	assertFalse(t1.isAlive());
849	<	assertFalse(t2.isAlive());
850	<	}
851	<	catch (Exception ex) {
852	<	unexpectedException();
853	<	}
813	>	Thread t1 = new Thread(new CheckedRunnable() {
814	>	public void realRun() throws InterruptedException {
815	>	lock.lock();
816	>	c.await();
817	>	lock.unlock();
818	>	}});
819	>
820	>	Thread t2 = new Thread(new CheckedRunnable() {
821	>	public void realRun() throws InterruptedException {
822	>	lock.lock();
823	>	c.await();
824	>	lock.unlock();
825	>	}});
826	>
827	>	t1.start();
828	>	t2.start();
829	>	Thread.sleep(SHORT_DELAY_MS);
830	>	lock.lock();
831	>	c.signalAll();
832	>	lock.unlock();
833	>	t1.join(SHORT_DELAY_MS);
834	>	t2.join(SHORT_DELAY_MS);
835	>	assertFalse(t1.isAlive());
836	>	assertFalse(t2.isAlive());
837	>	}
838	>
839	>	/**
840	>	* await after multiple reentrant locking preserves lock count
841	>	*/
842	>	public void testAwaitLockCount() throws InterruptedException {
843	>	final ReentrantLock lock = new ReentrantLock();
844	>	final Condition c = lock.newCondition();
845	>	Thread t1 = new Thread(new CheckedRunnable() {
846	>	public void realRun() throws InterruptedException {
847	>	lock.lock();
848	>	assertEquals(1, lock.getHoldCount());
849	>	c.await();
850	>	assertEquals(1, lock.getHoldCount());
851	>	lock.unlock();
852	>	}});
853	>
854	>	Thread t2 = new Thread(new CheckedRunnable() {
855	>	public void realRun() throws InterruptedException {
856	>	lock.lock();
857	>	lock.lock();
858	>	assertEquals(2, lock.getHoldCount());
859	>	c.await();
860	>	assertEquals(2, lock.getHoldCount());
861	>	lock.unlock();
862	>	lock.unlock();
863	>	}});
864	>
865	>	t1.start();
866	>	t2.start();
867	>	Thread.sleep(SHORT_DELAY_MS);
868	>	lock.lock();
869	>	c.signalAll();
870	>	lock.unlock();
871	>	t1.join(SHORT_DELAY_MS);
872	>	t2.join(SHORT_DELAY_MS);
873	>	assertFalse(t1.isAlive());
874	>	assertFalse(t2.isAlive());
875		}
876
877		/**
878		* A serialized lock deserializes as unlocked
879		*/
880	<	public void testSerialization() {
880	>	public void testSerialization() throws Exception {
881		ReentrantLock l = new ReentrantLock();
882		l.lock();
883		l.unlock();
884
885	<	try {
886	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
887	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
888	<	out.writeObject(l);
889	<	out.close();
890	<
891	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
892	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
893	<	ReentrantLock r = (ReentrantLock) in.readObject();
894	<	r.lock();
895	<	r.unlock();
896	<	} catch(Exception e){
897	<	e.printStackTrace();
898	<	unexpectedException();
899	<	}
885	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
886	>	ObjectOutputStream out =
887	>	new ObjectOutputStream(new BufferedOutputStream(bout));
888	>	out.writeObject(l);
889	>	out.close();
890	>
891	>	ByteArrayInputStream bin =
892	>	new ByteArrayInputStream(bout.toByteArray());
893	>	ObjectInputStream in =
894	>	new ObjectInputStream(new BufferedInputStream(bin));
895	>	ReentrantLock r = (ReentrantLock) in.readObject();
896	>	r.lock();
897	>	r.unlock();
898	>	}
899	>
900	>	/**
901	>	* toString indicates current lock state
902	>	*/
903	>	public void testToString() {
904	>	ReentrantLock lock = new ReentrantLock();
905	>	String us = lock.toString();
906	>	assertTrue(us.indexOf("Unlocked") >= 0);
907	>	lock.lock();
908	>	String ls = lock.toString();
909	>	assertTrue(ls.indexOf("Locked") >= 0);
910		}
911
912		}

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