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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.14 by dl, Sun Dec 28 22:44:59 2003 UTC vs.
Revision 1.31 by jsr166, Sat Nov 21 02:33:20 2009 UTC

#	Line 2 | Line 2
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4		* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		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 {
31	<	lock.lockInterruptibly();
32	<	} catch(InterruptedException success){}
30	>	public void realRun() throws InterruptedException {
31	>	lock.lockInterruptibly();
32		}
33		}
34
#	Line 38 | 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 {
46	<	lock.lockInterruptibly();
47	<	threadShouldThrow();
48	<	} catch(InterruptedException success){}
43	>	public void realRun() throws InterruptedException {
44	>	lock.lockInterruptibly();
45		}
46		}
47
#	Line 54 | 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 Collection<Thread> getWaitingThreads(Condition c) {
57	<	return super.getWaitingThreads(c);
56	>	public Collection<Thread> getWaitingThreads(Condition c) {
57	>	return super.getWaitingThreads(c);
58		}
59
60
#	Line 67 | Line 63 | public class ReentrantLockTest extends J
63		/**
64		* Constructor sets given fairness
65		*/
66	<	public void testConstructor() {
67	<	ReentrantLock rl = new ReentrantLock();
68	<	assertFalse(rl.isFair());
69	<	ReentrantLock r2 = new ReentrantLock(true);
74	<	assertTrue(r2.isFair());
66	>	public void testConstructor() {
67	>	assertFalse(new ReentrantLock().isFair());
68	>	assertFalse(new ReentrantLock(false).isFair());
69	>	assertTrue(new ReentrantLock(true).isFair());
70		}
71
72		/**
73		* locking an unlocked lock succeeds
74		*/
75	<	public void testLock() {
76	<	ReentrantLock rl = new ReentrantLock();
75	>	public void testLock() {
76	>	ReentrantLock rl = new ReentrantLock();
77		rl.lock();
78		assertTrue(rl.isLocked());
79		rl.unlock();
80	+	assertFalse(rl.isLocked());
81		}
82
83		/**
84		* locking an unlocked fair lock succeeds
85		*/
86	<	public void testFairLock() {
87	<	ReentrantLock rl = new ReentrantLock(true);
86	>	public void testFairLock() {
87	>	ReentrantLock rl = new ReentrantLock(true);
88		rl.lock();
89		assertTrue(rl.isLocked());
90		rl.unlock();
#	Line 97 | Line 93 | public class ReentrantLockTest extends J
93		/**
94		* Unlocking an unlocked lock throws IllegalMonitorStateException
95		*/
96	<	public void testUnlock_IllegalMonitorStateException() {
97	<	ReentrantLock rl = new ReentrantLock();
98	<	try {
99	<	rl.unlock();
100	<	shouldThrow();
101	<
106	<	} catch(IllegalMonitorStateException success){}
96	>	public void testUnlock_IllegalMonitorStateException() {
97	>	ReentrantLock rl = new ReentrantLock();
98	>	try {
99	>	rl.unlock();
100	>	shouldThrow();
101	>	} catch (IllegalMonitorStateException success) {}
102		}
103
104		/**
105	<	* trylock on an unlocked lock succeeds
105	>	* tryLock on an unlocked lock succeeds
106		*/
107	<	public void testTryLock() {
108	<	ReentrantLock rl = new ReentrantLock();
107	>	public void testTryLock() {
108	>	ReentrantLock rl = new ReentrantLock();
109		assertTrue(rl.tryLock());
110		assertTrue(rl.isLocked());
111		rl.unlock();
#	Line 120 | Line 115 | public class ReentrantLockTest extends J
115		/**
116		* hasQueuedThreads reports whether there are waiting threads
117		*/
118	<	public void testhasQueuedThreads() {
119	<	final ReentrantLock lock = new ReentrantLock();
118	>	public void testhasQueuedThreads() throws InterruptedException {
119	>	final ReentrantLock lock = new ReentrantLock();
120		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
121		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
122	<	try {
123	<	assertFalse(lock.hasQueuedThreads());
124	<	lock.lock();
125	<	t1.start();
126	<	Thread.sleep(SHORT_DELAY_MS);
127	<	assertTrue(lock.hasQueuedThreads());
128	<	t2.start();
129	<	Thread.sleep(SHORT_DELAY_MS);
130	<	assertTrue(lock.hasQueuedThreads());
131	<	t1.interrupt();
132	<	Thread.sleep(SHORT_DELAY_MS);
133	<	assertTrue(lock.hasQueuedThreads());
134	<	lock.unlock();
135	<	Thread.sleep(SHORT_DELAY_MS);
136	<	assertFalse(lock.hasQueuedThreads());
137	<	t1.join();
138	<	t2.join();
144	<	} catch(Exception e){
145	<	unexpectedException();
146	<	}
147	<	}
122	>	assertFalse(lock.hasQueuedThreads());
123	>	lock.lock();
124	>	t1.start();
125	>	Thread.sleep(SHORT_DELAY_MS);
126	>	assertTrue(lock.hasQueuedThreads());
127	>	t2.start();
128	>	Thread.sleep(SHORT_DELAY_MS);
129	>	assertTrue(lock.hasQueuedThreads());
130	>	t1.interrupt();
131	>	Thread.sleep(SHORT_DELAY_MS);
132	>	assertTrue(lock.hasQueuedThreads());
133	>	lock.unlock();
134	>	Thread.sleep(SHORT_DELAY_MS);
135	>	assertFalse(lock.hasQueuedThreads());
136	>	t1.join();
137	>	t2.join();
138	>	}
139
140		/**
141		* getQueueLength reports number of waiting threads
142		*/
143	<	public void testGetQueueLength() {
144	<	final ReentrantLock lock = new ReentrantLock();
143	>	public void testGetQueueLength() throws InterruptedException {
144	>	final ReentrantLock lock = new ReentrantLock();
145		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
146		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
147	<	try {
148	<	assertEquals(0, lock.getQueueLength());
149	<	lock.lock();
150	<	t1.start();
151	<	Thread.sleep(SHORT_DELAY_MS);
152	<	assertEquals(1, lock.getQueueLength());
153	<	t2.start();
154	<	Thread.sleep(SHORT_DELAY_MS);
155	<	assertEquals(2, lock.getQueueLength());
156	<	t1.interrupt();
157	<	Thread.sleep(SHORT_DELAY_MS);
158	<	assertEquals(1, lock.getQueueLength());
159	<	lock.unlock();
160	<	Thread.sleep(SHORT_DELAY_MS);
161	<	assertEquals(0, lock.getQueueLength());
162	<	t1.join();
163	<	t2.join();
173	<	} catch(Exception e){
174	<	unexpectedException();
175	<	}
176	<	}
147	>	assertEquals(0, lock.getQueueLength());
148	>	lock.lock();
149	>	t1.start();
150	>	Thread.sleep(SHORT_DELAY_MS);
151	>	assertEquals(1, lock.getQueueLength());
152	>	t2.start();
153	>	Thread.sleep(SHORT_DELAY_MS);
154	>	assertEquals(2, lock.getQueueLength());
155	>	t1.interrupt();
156	>	Thread.sleep(SHORT_DELAY_MS);
157	>	assertEquals(1, lock.getQueueLength());
158	>	lock.unlock();
159	>	Thread.sleep(SHORT_DELAY_MS);
160	>	assertEquals(0, lock.getQueueLength());
161	>	t1.join();
162	>	t2.join();
163	>	}
164
165		/**
166	<	* getQueuedThreads includes waiting threads
166	>	* getQueueLength reports number of waiting threads
167		*/
168	<	public void testGetQueuedThreads() {
169	<	final PublicReentrantLock lock = new PublicReentrantLock();
168	>	public void testGetQueueLength_fair() throws InterruptedException {
169	>	final ReentrantLock lock = new ReentrantLock(true);
170		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
171		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
172	<	try {
173	<	assertTrue(lock.getQueuedThreads().isEmpty());
174	<	lock.lock();
175	<	assertTrue(lock.getQueuedThreads().isEmpty());
176	<	t1.start();
177	<	Thread.sleep(SHORT_DELAY_MS);
178	<	assertTrue(lock.getQueuedThreads().contains(t1));
179	<	t2.start();
180	<	Thread.sleep(SHORT_DELAY_MS);
181	<	assertTrue(lock.getQueuedThreads().contains(t1));
182	<	assertTrue(lock.getQueuedThreads().contains(t2));
183	<	t1.interrupt();
184	<	Thread.sleep(SHORT_DELAY_MS);
185	<	assertFalse(lock.getQueuedThreads().contains(t1));
186	<	assertTrue(lock.getQueuedThreads().contains(t2));
187	<	lock.unlock();
188	<	Thread.sleep(SHORT_DELAY_MS);
202	<	assertTrue(lock.getQueuedThreads().isEmpty());
203	<	t1.join();
204	<	t2.join();
205	<	} catch(Exception e){
206	<	unexpectedException();
207	<	}
208	<	}
172	>	assertEquals(0, lock.getQueueLength());
173	>	lock.lock();
174	>	t1.start();
175	>	Thread.sleep(SHORT_DELAY_MS);
176	>	assertEquals(1, lock.getQueueLength());
177	>	t2.start();
178	>	Thread.sleep(SHORT_DELAY_MS);
179	>	assertEquals(2, lock.getQueueLength());
180	>	t1.interrupt();
181	>	Thread.sleep(SHORT_DELAY_MS);
182	>	assertEquals(1, lock.getQueueLength());
183	>	lock.unlock();
184	>	Thread.sleep(SHORT_DELAY_MS);
185	>	assertEquals(0, lock.getQueueLength());
186	>	t1.join();
187	>	t2.join();
188	>	}
189
190	+	/**
191	+	* hasQueuedThread(null) throws NPE
192	+	*/
193	+	public void testHasQueuedThreadNPE() {
194	+	final ReentrantLock sync = new ReentrantLock();
195	+	try {
196	+	sync.hasQueuedThread(null);
197	+	shouldThrow();
198	+	} catch (NullPointerException success) {}
199	+	}
200
201		/**
202	<	* timed trylock is interruptible.
203	<	*/
204	<	public void testInterruptedException2() {
205	<	final ReentrantLock lock = new ReentrantLock();
206	<	lock.lock();
207	<	Thread t = new Thread(new Runnable() {
208	<	public void run() {
209	<	try {
210	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
211	<	threadShouldThrow();
212	<	} catch(InterruptedException success){}
213	<	}
214	<	});
215	<	try {
216	<	t.start();
217	<	t.interrupt();
218	<	} catch(Exception e){
219	<	unexpectedException();
220	<	}
202	>	* hasQueuedThread reports whether a thread is queued.
203	>	*/
204	>	public void testHasQueuedThread() throws InterruptedException {
205	>	final ReentrantLock sync = new ReentrantLock();
206	>	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
207	>	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
208	>	assertFalse(sync.hasQueuedThread(t1));
209	>	assertFalse(sync.hasQueuedThread(t2));
210	>	sync.lock();
211	>	t1.start();
212	>	Thread.sleep(SHORT_DELAY_MS);
213	>	assertTrue(sync.hasQueuedThread(t1));
214	>	t2.start();
215	>	Thread.sleep(SHORT_DELAY_MS);
216	>	assertTrue(sync.hasQueuedThread(t1));
217	>	assertTrue(sync.hasQueuedThread(t2));
218	>	t1.interrupt();
219	>	Thread.sleep(SHORT_DELAY_MS);
220	>	assertFalse(sync.hasQueuedThread(t1));
221	>	assertTrue(sync.hasQueuedThread(t2));
222	>	sync.unlock();
223	>	Thread.sleep(SHORT_DELAY_MS);
224	>	assertFalse(sync.hasQueuedThread(t1));
225	>	Thread.sleep(SHORT_DELAY_MS);
226	>	assertFalse(sync.hasQueuedThread(t2));
227	>	t1.join();
228	>	t2.join();
229		}
230
231
232		/**
233	<	* Trylock on a locked lock fails
233	>	* getQueuedThreads includes waiting threads
234		*/
235	<	public void testTryLockWhenLocked() {
236	<	final ReentrantLock lock = new ReentrantLock();
237	<	lock.lock();
238	<	Thread t = new Thread(new Runnable() {
239	<	public void run() {
240	<	threadAssertFalse(lock.tryLock());
241	<	}
242	<	});
243	<	try {
244	<	t.start();
245	<	t.join();
246	<	lock.unlock();
247	<	} catch(Exception e){
248	<	unexpectedException();
249	<	}
250	<	}
235	>	public void testGetQueuedThreads() throws InterruptedException {
236	>	final PublicReentrantLock lock = new PublicReentrantLock();
237	>	Thread t1 = new Thread(new InterruptedLockRunnable(lock));
238	>	Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
239	>	assertTrue(lock.getQueuedThreads().isEmpty());
240	>	lock.lock();
241	>	assertTrue(lock.getQueuedThreads().isEmpty());
242	>	t1.start();
243	>	Thread.sleep(SHORT_DELAY_MS);
244	>	assertTrue(lock.getQueuedThreads().contains(t1));
245	>	t2.start();
246	>	Thread.sleep(SHORT_DELAY_MS);
247	>	assertTrue(lock.getQueuedThreads().contains(t1));
248	>	assertTrue(lock.getQueuedThreads().contains(t2));
249	>	t1.interrupt();
250	>	Thread.sleep(SHORT_DELAY_MS);
251	>	assertFalse(lock.getQueuedThreads().contains(t1));
252	>	assertTrue(lock.getQueuedThreads().contains(t2));
253	>	lock.unlock();
254	>	Thread.sleep(SHORT_DELAY_MS);
255	>	assertTrue(lock.getQueuedThreads().isEmpty());
256	>	t1.join();
257	>	t2.join();
258	>	}
259	>
260	>
261	>	/**
262	>	* timed tryLock is interruptible.
263	>	*/
264	>	public void testInterruptedException2() throws InterruptedException {
265	>	final ReentrantLock lock = new ReentrantLock();
266	>	lock.lock();
267	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
268	>	public void realRun() throws InterruptedException {
269	>	lock.tryLock(MEDIUM_DELAY_MS,MILLISECONDS);
270	>	}});
271	>
272	>	t.start();
273	>	t.interrupt();
274	>	t.join();
275	>	}
276	>
277	>
278	>	/**
279	>	* TryLock on a locked lock fails
280	>	*/
281	>	public void testTryLockWhenLocked() throws InterruptedException {
282	>	final ReentrantLock lock = new ReentrantLock();
283	>	lock.lock();
284	>	Thread t = new Thread(new CheckedRunnable() {
285	>	public void realRun() {
286	>	threadAssertFalse(lock.tryLock());
287	>	}});
288	>
289	>	t.start();
290	>	t.join();
291	>	lock.unlock();
292	>	}
293	>
294	>	/**
295	>	* Timed tryLock on a locked lock times out
296	>	*/
297	>	public void testTryLock_Timeout() throws InterruptedException {
298	>	final ReentrantLock lock = new ReentrantLock();
299	>	lock.lock();
300	>	Thread t = new Thread(new CheckedRunnable() {
301	>	public void realRun() throws InterruptedException {
302	>	threadAssertFalse(lock.tryLock(1, MILLISECONDS));
303	>	}});
304	>
305	>	t.start();
306	>	t.join();
307	>	lock.unlock();
308	>	}
309
310		/**
255	–	* Timed trylock on a locked lock times out
256	–	*/
257	–	public void testTryLock_Timeout() {
258	–	final ReentrantLock lock = new ReentrantLock();
259	–	lock.lock();
260	–	Thread t = new Thread(new Runnable() {
261	–	public void run() {
262	–	try {
263	–	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
264	–	} catch (Exception ex) {
265	–	threadUnexpectedException();
266	–	}
267	–	}
268	–	});
269	–	try {
270	–	t.start();
271	–	t.join();
272	–	lock.unlock();
273	–	} catch(Exception e){
274	–	unexpectedException();
275	–	}
276	–	}
277	–
278	–	/**
311		* getHoldCount returns number of recursive holds
312		*/
313		public void testGetHoldCount() {
314	<	ReentrantLock lock = new ReentrantLock();
315	<	for(int i = 1; i <= SIZE; i++) {
316	<	lock.lock();
317	<	assertEquals(i,lock.getHoldCount());
318	<	}
319	<	for(int i = SIZE; i > 0; i--) {
320	<	lock.unlock();
321	<	assertEquals(i-1,lock.getHoldCount());
322	<	}
314	>	ReentrantLock lock = new ReentrantLock();
315	>	for (int i = 1; i <= SIZE; i++) {
316	>	lock.lock();
317	>	assertEquals(i, lock.getHoldCount());
318	>	}
319	>	for (int i = SIZE; i > 0; i--) {
320	>	lock.unlock();
321	>	assertEquals(i-1, lock.getHoldCount());
322	>	}
323		}
324	<
325	<
324	>
325	>
326		/**
327		* isLocked is true when locked and false when not
328		*/
329	<	public void testIsLocked() {
330	<	final ReentrantLock lock = new ReentrantLock();
331	<	lock.lock();
332	<	assertTrue(lock.isLocked());
333	<	lock.unlock();
334	<	assertFalse(lock.isLocked());
335	<	Thread t = new Thread(new Runnable() {
336	<	public void run() {
337	<	lock.lock();
338	<	try {
339	<	Thread.sleep(SMALL_DELAY_MS);
340	<	}
341	<	catch(Exception e) {
342	<	threadUnexpectedException();
343	<	}
344	<	lock.unlock();
345	<	}
346	<	});
315	<	try {
316	<	t.start();
317	<	Thread.sleep(SHORT_DELAY_MS);
318	<	assertTrue(lock.isLocked());
319	<	t.join();
320	<	assertFalse(lock.isLocked());
321	<	} catch(Exception e){
322	<	unexpectedException();
323	<	}
329	>	public void testIsLocked() throws InterruptedException {
330	>	final ReentrantLock lock = new ReentrantLock();
331	>	lock.lock();
332	>	assertTrue(lock.isLocked());
333	>	lock.unlock();
334	>	assertFalse(lock.isLocked());
335	>	Thread t = new Thread(new CheckedRunnable() {
336	>	public void realRun() throws InterruptedException {
337	>	lock.lock();
338	>	Thread.sleep(SMALL_DELAY_MS);
339	>	lock.unlock();
340	>	}});
341	>
342	>	t.start();
343	>	Thread.sleep(SHORT_DELAY_MS);
344	>	assertTrue(lock.isLocked());
345	>	t.join();
346	>	assertFalse(lock.isLocked());
347		}
348
349
350		/**
351		* lockInterruptibly is interruptible.
352		*/
353	<	public void testLockInterruptibly1() {
354	<	final ReentrantLock lock = new ReentrantLock();
355	<	lock.lock();
356	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
357	<	try {
358	<	t.start();
359	<	t.interrupt();
360	<	lock.unlock();
361	<	t.join();
362	<	} catch(Exception e){
363	<	unexpectedException();
341	<	}
342	<	}
353	>	public void testLockInterruptibly1() throws InterruptedException {
354	>	final ReentrantLock lock = new ReentrantLock();
355	>	lock.lock();
356	>	Thread t = new Thread(new InterruptedLockRunnable(lock));
357	>	t.start();
358	>	Thread.sleep(SHORT_DELAY_MS);
359	>	t.interrupt();
360	>	Thread.sleep(SHORT_DELAY_MS);
361	>	lock.unlock();
362	>	t.join();
363	>	}
364
365		/**
366		* lockInterruptibly succeeds when unlocked, else is interruptible
367		*/
368	<	public void testLockInterruptibly2() {
369	<	final ReentrantLock lock = new ReentrantLock();
370	<	try {
371	<	lock.lockInterruptibly();
372	<	} catch(Exception e) {
373	<	unexpectedException();
374	<	}
375	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
376	<	try {
356	<	t.start();
357	<	t.interrupt();
358	<	assertTrue(lock.isLocked());
359	<	assertTrue(lock.isHeldByCurrentThread());
360	<	t.join();
361	<	} catch(Exception e){
362	<	unexpectedException();
363	<	}
368	>	public void testLockInterruptibly2() throws InterruptedException {
369	>	final ReentrantLock lock = new ReentrantLock();
370	>	lock.lockInterruptibly();
371	>	Thread t = new Thread(new InterruptedLockRunnable(lock));
372	>	t.start();
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	<	}
376	<	catch (IllegalMonitorStateException success) {
377	<	}
378	<	catch (Exception ex) {
379	<	unexpectedException();
380	<	}
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	<	}
393	<	catch (IllegalMonitorStateException success) {
394	<	}
395	<	catch (Exception ex) {
396	<	unexpectedException();
397	<	}
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	<	try {
410	<	lock.lock();
411	<	long t = c.awaitNanos(100);
412	<	assertTrue(t <= 0);
410	<	lock.unlock();
411	<	}
412	<	catch (Exception ex) {
413	<	unexpectedException();
414	<	}
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() {
419	<	final ReentrantLock lock = new ReentrantLock();
418	>	public void testAwait_Timeout() throws InterruptedException {
419	>	final ReentrantLock lock = new ReentrantLock();
420		final Condition c = lock.newCondition();
421	<	try {
422	<	lock.lock();
423	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
426	<	lock.unlock();
427	<	}
428	<	catch (Exception ex) {
429	<	unexpectedException();
430	<	}
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() {
430	<	final ReentrantLock lock = new ReentrantLock();
429	>	public void testAwaitUntil_Timeout() throws InterruptedException {
430	>	final ReentrantLock lock = new ReentrantLock();
431		final Condition c = lock.newCondition();
432	<	try {
433	<	lock.lock();
434	<	java.util.Date d = new java.util.Date();
435	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
443	<	lock.unlock();
444	<	}
445	<	catch (Exception ex) {
446	<	unexpectedException();
447	<	}
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() {
442	<	final ReentrantLock lock = new ReentrantLock();
441	>	public void testAwait() throws InterruptedException {
442	>	final ReentrantLock lock = new ReentrantLock();
443		final Condition c = lock.newCondition();
444	<	Thread t = new Thread(new Runnable() {
445	<	public void run() {
446	<	try {
447	<	lock.lock();
448	<	c.await();
449	<	lock.unlock();
450	<	}
451	<	catch(InterruptedException e) {
452	<	threadUnexpectedException();
453	<	}
454	<	}
455	<	});
456	<
457	<	try {
470	<	t.start();
471	<	Thread.sleep(SHORT_DELAY_MS);
472	<	lock.lock();
473	<	c.signal();
474	<	lock.unlock();
475	<	t.join(SHORT_DELAY_MS);
476	<	assertFalse(t.isAlive());
477	<	}
478	<	catch (Exception ex) {
479	<	unexpectedException();
480	<	}
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();
464	>	final ReentrantLock lock = new ReentrantLock();
465		try {
466		lock.hasWaiters(null);
467		shouldThrow();
468	<	} catch (NullPointerException success) {
492	<	} catch (Exception ex) {
493	<	unexpectedException();
494	<	}
468	>	} catch (NullPointerException success) {}
469		}
470
471		/**
472		* getWaitQueueLength throws NPE if null
473		*/
474		public void testGetWaitQueueLengthNPE() {
475	<	final ReentrantLock lock = new ReentrantLock();
475	>	final ReentrantLock lock = new ReentrantLock();
476		try {
477		lock.getWaitQueueLength(null);
478		shouldThrow();
479	<	} catch (NullPointerException success) {
506	<	} catch (Exception ex) {
507	<	unexpectedException();
508	<	}
479	>	} catch (NullPointerException success) {}
480		}
481
482
#	Line 513 | Line 484 | public class ReentrantLockTest extends J
484		* getWaitingThreads throws NPE if null
485		*/
486		public void testGetWaitingThreadsNPE() {
487	<	final PublicReentrantLock lock = new PublicReentrantLock();
487	>	final PublicReentrantLock lock = new PublicReentrantLock();
488		try {
489		lock.getWaitingThreads(null);
490		shouldThrow();
491	<	} catch (NullPointerException success) {
521	<	} catch (Exception ex) {
522	<	unexpectedException();
523	<	}
491	>	} catch (NullPointerException success) {}
492		}
493
494
#	Line 528 | Line 496 | public class ReentrantLockTest extends J
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();
499	>	final ReentrantLock lock = new ReentrantLock();
500	>	final Condition c = lock.newCondition();
501	>	final ReentrantLock lock2 = new ReentrantLock();
502		try {
503		lock2.hasWaiters(c);
504		shouldThrow();
505	<	} catch (IllegalArgumentException success) {
538	<	} catch (Exception ex) {
539	<	unexpectedException();
540	<	}
505	>	} catch (IllegalArgumentException success) {}
506		}
507
508		/**
509		* hasWaiters throws IMSE if not locked
510		*/
511		public void testHasWaitersIMSE() {
512	<	final ReentrantLock lock = new ReentrantLock();
513	<	final Condition c = (lock.newCondition());
512	>	final ReentrantLock lock = new ReentrantLock();
513	>	final Condition c = lock.newCondition();
514		try {
515		lock.hasWaiters(c);
516		shouldThrow();
517	<	} catch (IllegalMonitorStateException success) {
553	<	} catch (Exception ex) {
554	<	unexpectedException();
555	<	}
517	>	} catch (IllegalMonitorStateException success) {}
518		}
519
520
#	Line 560 | Line 522 | public class ReentrantLockTest extends J
522		* getWaitQueueLength throws IAE if not owned
523		*/
524		public void testGetWaitQueueLengthIAE() {
525	<	final ReentrantLock lock = new ReentrantLock();
526	<	final Condition c = (lock.newCondition());
527	<	final ReentrantLock lock2 = new ReentrantLock();
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) {
570	<	} catch (Exception ex) {
571	<	unexpectedException();
572	<	}
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());
538	>	final ReentrantLock lock = new ReentrantLock();
539	>	final Condition c = lock.newCondition();
540		try {
541		lock.getWaitQueueLength(c);
542		shouldThrow();
543	<	} catch (IllegalMonitorStateException success) {
585	<	} catch (Exception ex) {
586	<	unexpectedException();
587	<	}
543	>	} catch (IllegalMonitorStateException success) {}
544		}
545
546
#	Line 592 | Line 548 | public class ReentrantLockTest extends J
548		* getWaitingThreads throws IAE if not owned
549		*/
550		public void testGetWaitingThreadsIAE() {
551	<	final PublicReentrantLock lock = new PublicReentrantLock();
552	<	final Condition c = (lock.newCondition());
553	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
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) {
602	<	} catch (Exception ex) {
603	<	unexpectedException();
604	<	}
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());
564	>	final PublicReentrantLock lock = new PublicReentrantLock();
565	>	final Condition c = lock.newCondition();
566		try {
567		lock.getWaitingThreads(c);
568		shouldThrow();
569	<	} catch (IllegalMonitorStateException success) {
617	<	} catch (Exception ex) {
618	<	unexpectedException();
619	<	}
569	>	} catch (IllegalMonitorStateException success) {}
570		}
571
572
623	–
573		/**
574		* hasWaiters returns true when a thread is waiting, else false
575		*/
576	<	public void testHasWaiters() {
577	<	final ReentrantLock lock = new ReentrantLock();
576	>	public void testHasWaiters() throws InterruptedException {
577	>	final ReentrantLock lock = new ReentrantLock();
578		final Condition c = lock.newCondition();
579	<	Thread t = new Thread(new Runnable() {
580	<	public void run() {
581	<	try {
582	<	lock.lock();
583	<	threadAssertFalse(lock.hasWaiters(c));
584	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
585	<	c.await();
586	<	lock.unlock();
587	<	}
588	<	catch(InterruptedException e) {
589	<	threadUnexpectedException();
590	<	}
591	<	}
592	<	});
593	<
594	<	try {
595	<	t.start();
596	<	Thread.sleep(SHORT_DELAY_MS);
597	<	lock.lock();
598	<	assertTrue(lock.hasWaiters(c));
599	<	assertEquals(1, lock.getWaitQueueLength(c));
600	<	c.signal();
601	<	lock.unlock();
653	<	Thread.sleep(SHORT_DELAY_MS);
654	<	lock.lock();
655	<	assertFalse(lock.hasWaiters(c));
656	<	assertEquals(0, lock.getWaitQueueLength(c));
657	<	lock.unlock();
658	<	t.join(SHORT_DELAY_MS);
659	<	assertFalse(t.isAlive());
660	<	}
661	<	catch (Exception ex) {
662	<	unexpectedException();
663	<	}
579	>	Thread t = new Thread(new CheckedRunnable() {
580	>	public void realRun() throws InterruptedException {
581	>	lock.lock();
582	>	threadAssertFalse(lock.hasWaiters(c));
583	>	threadAssertEquals(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();
607	>	public void testGetWaitQueueLength() throws InterruptedException {
608	>	final ReentrantLock lock = new ReentrantLock();
609		final Condition c = lock.newCondition();
610	<	Thread t1 = new Thread(new Runnable() {
611	<	public void run() {
612	<	try {
613	<	lock.lock();
614	<	threadAssertFalse(lock.hasWaiters(c));
615	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
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(lock.hasWaiters(c));
630	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
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();
708	<	assertTrue(lock.hasWaiters(c));
709	<	assertEquals(2, lock.getWaitQueueLength(c));
710	<	c.signalAll();
711	<	lock.unlock();
712	<	Thread.sleep(SHORT_DELAY_MS);
713	<	lock.lock();
714	<	assertFalse(lock.hasWaiters(c));
715	<	assertEquals(0, lock.getWaitQueueLength(c));
716	<	lock.unlock();
717	<	t1.join(SHORT_DELAY_MS);
718	<	t2.join(SHORT_DELAY_MS);
719	<	assertFalse(t1.isAlive());
720	<	assertFalse(t2.isAlive());
721	<	}
722	<	catch (Exception ex) {
723	<	unexpectedException();
724	<	}
610	>	Thread t1 = new Thread(new CheckedRunnable() {
611	>	public void realRun() throws InterruptedException {
612	>	lock.lock();
613	>	threadAssertFalse(lock.hasWaiters(c));
614	>	threadAssertEquals(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	>	threadAssertTrue(lock.hasWaiters(c));
623	>	threadAssertEquals(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();
651	>	public void testGetWaitingThreads() throws InterruptedException {
652	>	final PublicReentrantLock lock = new PublicReentrantLock();
653		final Condition c = lock.newCondition();
654	<	Thread t1 = new Thread(new Runnable() {
655	<	public void run() {
656	<	try {
657	<	lock.lock();
658	<	threadAssertTrue(lock.getWaitingThreads(c).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(lock.getWaitingThreads(c).isEmpty());
673	<	c.await();
674	<	lock.unlock();
675	<	}
676	<	catch(InterruptedException e) {
677	<	threadUnexpectedException();
678	<	}
679	<	}
680	<	});
654	>	Thread t1 = new Thread(new CheckedRunnable() {
655	>	public void realRun() throws InterruptedException {
656	>	lock.lock();
657	>	threadAssertTrue(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	>	threadAssertFalse(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	>	public synchronized void run() {
709	>	lock.lock();
710	>	lockStarted = true;
711	>
712	>	while (!canAwake) {
713	>	c.awaitUninterruptibly();
714	>	}
715
716	<	try {
762	<	lock.lock();
763	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
764	<	lock.unlock();
765	<	t1.start();
766	<	Thread.sleep(SHORT_DELAY_MS);
767	<	t2.start();
768	<	Thread.sleep(SHORT_DELAY_MS);
769	<	lock.lock();
770	<	assertTrue(lock.hasWaiters(c));
771	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
772	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
773	<	c.signalAll();
716	>	interrupted = isInterrupted();
717		lock.unlock();
775	–	Thread.sleep(SHORT_DELAY_MS);
776	–	lock.lock();
777	–	assertFalse(lock.hasWaiters(c));
778	–	assertTrue(lock.getWaitingThreads(c).isEmpty());
779	–	lock.unlock();
780	–	t1.join(SHORT_DELAY_MS);
781	–	t2.join(SHORT_DELAY_MS);
782	–	assertFalse(t1.isAlive());
783	–	assertFalse(t2.isAlive());
784	–	}
785	–	catch (Exception ex) {
786	–	unexpectedException();
718		}
719		}
720
790	–
791	–
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() {
799	<	public void run() {
800	<	lock.lock();
801	<	c.awaitUninterruptibly();
802	<	lock.unlock();
803	<	}
804	<	});
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);
809	<	t.interrupt();
810	<	lock.lock();
737	>	thread.interrupt();
738	>	thread.canAwake = true;
739		c.signal();
740	+	} finally {
741		lock.unlock();
813	–	assert(t.isInterrupted());
814	–	t.join(SHORT_DELAY_MS);
815	–	assertFalse(t.isAlive());
816	–	}
817	–	catch (Exception ex) {
818	–	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	<	}
839	<	});
840	<
841	<	try {
842	<	t.start();
843	<	Thread.sleep(SHORT_DELAY_MS);
844	<	t.interrupt();
845	<	t.join(SHORT_DELAY_MS);
846	<	assertFalse(t.isAlive());
847	<	}
848	<	catch (Exception ex) {
849	<	unexpectedException();
850	<	}
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	<	}
870	<	});
871	<
872	<	try {
873	<	t.start();
874	<	Thread.sleep(SHORT_DELAY_MS);
875	<	t.interrupt();
876	<	t.join(SHORT_DELAY_MS);
877	<	assertFalse(t.isAlive());
878	<	}
879	<	catch (Exception ex) {
880	<	unexpectedException();
881	<	}
774	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
775	>	public void realRun() throws InterruptedException {
776	>	lock.lock();
777	>	c.awaitNanos(1000 * 1000 * 1000); // 1 sec
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	<	}
902	<	});
903	<
904	<	try {
905	<	t.start();
906	<	Thread.sleep(SHORT_DELAY_MS);
907	<	t.interrupt();
908	<	t.join(SHORT_DELAY_MS);
909	<	assertFalse(t.isAlive());
910	<	}
911	<	catch (Exception ex) {
912	<	unexpectedException();
913	<	}
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	>	threadAssertEquals(1, lock.getHoldCount());
849	>	c.await();
850	>	threadAssertEquals(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	>	threadAssertEquals(2, lock.getHoldCount());
859	>	c.await();
860	>	threadAssertEquals(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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