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

Comparing jsr166/src/test/tck/ReentrantLockTest.java (file contents):
Revision 1.16 by dl, Wed Jan 7 01:02:17 2004 UTC vs.
Revision 1.43 by jsr166, Sat May 7 03:36:23 2011 UTC

#	Line 1 | Line 1
1		/*
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.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.concurrent.locks.*;
11		import java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.util.*;
14		import java.io.*;
15
16		public class ReentrantLockTest extends JSR166TestCase {
17		public static void main(String[] args) {
18	<	junit.textui.TestRunner.run (suite());
18	>	junit.textui.TestRunner.run(suite());
19		}
20		public static Test suite() {
21	<	return new TestSuite(ReentrantLockTest.class);
21	>	return new TestSuite(ReentrantLockTest.class);
22		}
23
24		/**
25		* A runnable calling lockInterruptibly
26		*/
27	<	class InterruptibleLockRunnable implements Runnable {
27	>	class InterruptibleLockRunnable extends CheckedRunnable {
28		final ReentrantLock lock;
29		InterruptibleLockRunnable(ReentrantLock l) { lock = l; }
30	<	public void run() {
31	<	try {
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
61	+	/**
62	+	* Checks that condition c has no waiters.
63	+	*/
64	+	void assertHasNoWaiters(PublicReentrantLock lock, Condition c) {
65	+	assertHasWaiters(lock, c, new Thread[] {});
66	+	}
67
68	+	/**
69	+	* Checks that condition c has exactly the given waiter threads.
70	+	*/
71	+	void assertHasWaiters(PublicReentrantLock lock, Condition c,
72	+	Thread... threads) {
73	+	lock.lock();
74	+	assertEquals(threads.length > 0, lock.hasWaiters(c));
75	+	assertEquals(threads.length, lock.getWaitQueueLength(c));
76	+	assertEquals(threads.length == 0, lock.getWaitingThreads(c).isEmpty());
77	+	assertEquals(threads.length, lock.getWaitingThreads(c).size());
78	+	assertEquals(new HashSet<Thread>(lock.getWaitingThreads(c)),
79	+	new HashSet<Thread>(Arrays.asList(threads)));
80	+	lock.unlock();
81		}
82
83		/**
84		* Constructor sets given fairness
85		*/
86	<	public void testConstructor() {
87	<	ReentrantLock rl = new ReentrantLock();
88	<	assertFalse(rl.isFair());
89	<	ReentrantLock r2 = new ReentrantLock(true);
74	<	assertTrue(r2.isFair());
86	>	public void testConstructor() {
87	>	assertFalse(new ReentrantLock().isFair());
88	>	assertFalse(new ReentrantLock(false).isFair());
89	>	assertTrue(new ReentrantLock(true).isFair());
90		}
91
92		/**
93		* locking an unlocked lock succeeds
94		*/
95	<	public void testLock() {
96	<	ReentrantLock rl = new ReentrantLock();
95	>	public void testLock() {
96	>	ReentrantLock rl = new ReentrantLock();
97		rl.lock();
98		assertTrue(rl.isLocked());
99		rl.unlock();
100	+	assertFalse(rl.isLocked());
101		}
102
103		/**
104		* locking an unlocked fair lock succeeds
105		*/
106	<	public void testFairLock() {
107	<	ReentrantLock rl = new ReentrantLock(true);
106	>	public void testFairLock() {
107	>	ReentrantLock rl = new ReentrantLock(true);
108		rl.lock();
109		assertTrue(rl.isLocked());
110		rl.unlock();
#	Line 97 | Line 113 | public class ReentrantLockTest extends J
113		/**
114		* Unlocking an unlocked lock throws IllegalMonitorStateException
115		*/
116	<	public void testUnlock_IllegalMonitorStateException() {
117	<	ReentrantLock rl = new ReentrantLock();
118	<	try {
119	<	rl.unlock();
120	<	shouldThrow();
121	<
106	<	} catch(IllegalMonitorStateException success){}
116	>	public void testUnlock_IllegalMonitorStateException() {
117	>	ReentrantLock rl = new ReentrantLock();
118	>	try {
119	>	rl.unlock();
120	>	shouldThrow();
121	>	} catch (IllegalMonitorStateException success) {}
122		}
123
124		/**
125		* tryLock on an unlocked lock succeeds
126		*/
127	<	public void testTryLock() {
128	<	ReentrantLock rl = new ReentrantLock();
127	>	public void testTryLock() {
128	>	ReentrantLock rl = new ReentrantLock();
129		assertTrue(rl.tryLock());
130		assertTrue(rl.isLocked());
131		rl.unlock();
#	Line 120 | Line 135 | public class ReentrantLockTest extends J
135		/**
136		* hasQueuedThreads reports whether there are waiting threads
137		*/
138	<	public void testhasQueuedThreads() {
139	<	final ReentrantLock lock = new ReentrantLock();
138	>	public void testhasQueuedThreads() throws InterruptedException {
139	>	final ReentrantLock lock = new ReentrantLock();
140		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
141		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
142	<	try {
143	<	assertFalse(lock.hasQueuedThreads());
144	<	lock.lock();
145	<	t1.start();
146	<	Thread.sleep(SHORT_DELAY_MS);
147	<	assertTrue(lock.hasQueuedThreads());
148	<	t2.start();
149	<	Thread.sleep(SHORT_DELAY_MS);
150	<	assertTrue(lock.hasQueuedThreads());
151	<	t1.interrupt();
152	<	Thread.sleep(SHORT_DELAY_MS);
153	<	assertTrue(lock.hasQueuedThreads());
154	<	lock.unlock();
155	<	Thread.sleep(SHORT_DELAY_MS);
156	<	assertFalse(lock.hasQueuedThreads());
157	<	t1.join();
158	<	t2.join();
144	<	} catch(Exception e){
145	<	unexpectedException();
146	<	}
147	<	}
142	>	assertFalse(lock.hasQueuedThreads());
143	>	lock.lock();
144	>	t1.start();
145	>	delay(SHORT_DELAY_MS);
146	>	assertTrue(lock.hasQueuedThreads());
147	>	t2.start();
148	>	delay(SHORT_DELAY_MS);
149	>	assertTrue(lock.hasQueuedThreads());
150	>	t1.interrupt();
151	>	delay(SHORT_DELAY_MS);
152	>	assertTrue(lock.hasQueuedThreads());
153	>	lock.unlock();
154	>	delay(SHORT_DELAY_MS);
155	>	assertFalse(lock.hasQueuedThreads());
156	>	awaitTermination(t1);
157	>	awaitTermination(t2);
158	>	}
159
160		/**
161		* getQueueLength reports number of waiting threads
162		*/
163	<	public void testGetQueueLength() {
164	<	final ReentrantLock lock = new ReentrantLock();
163	>	public void testGetQueueLength() throws InterruptedException {
164	>	final ReentrantLock lock = new ReentrantLock();
165		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
166		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
167	<	try {
168	<	assertEquals(0, lock.getQueueLength());
169	<	lock.lock();
170	<	t1.start();
171	<	Thread.sleep(SHORT_DELAY_MS);
172	<	assertEquals(1, lock.getQueueLength());
173	<	t2.start();
174	<	Thread.sleep(SHORT_DELAY_MS);
175	<	assertEquals(2, lock.getQueueLength());
176	<	t1.interrupt();
177	<	Thread.sleep(SHORT_DELAY_MS);
178	<	assertEquals(1, lock.getQueueLength());
179	<	lock.unlock();
180	<	Thread.sleep(SHORT_DELAY_MS);
181	<	assertEquals(0, lock.getQueueLength());
182	<	t1.join();
183	<	t2.join();
173	<	} catch(Exception e){
174	<	unexpectedException();
175	<	}
176	<	}
167	>	assertEquals(0, lock.getQueueLength());
168	>	lock.lock();
169	>	t1.start();
170	>	delay(SHORT_DELAY_MS);
171	>	assertEquals(1, lock.getQueueLength());
172	>	t2.start();
173	>	delay(SHORT_DELAY_MS);
174	>	assertEquals(2, lock.getQueueLength());
175	>	t1.interrupt();
176	>	delay(SHORT_DELAY_MS);
177	>	assertEquals(1, lock.getQueueLength());
178	>	lock.unlock();
179	>	delay(SHORT_DELAY_MS);
180	>	assertEquals(0, lock.getQueueLength());
181	>	awaitTermination(t1);
182	>	awaitTermination(t2);
183	>	}
184
185		/**
186		* getQueueLength reports number of waiting threads
187		*/
188	<	public void testGetQueueLength_fair() {
189	<	final ReentrantLock lock = new ReentrantLock(true);
188	>	public void testGetQueueLength_fair() throws InterruptedException {
189	>	final ReentrantLock lock = new ReentrantLock(true);
190		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
191		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
192	<	try {
193	<	assertEquals(0, lock.getQueueLength());
194	<	lock.lock();
195	<	t1.start();
196	<	Thread.sleep(SHORT_DELAY_MS);
197	<	assertEquals(1, lock.getQueueLength());
198	<	t2.start();
199	<	Thread.sleep(SHORT_DELAY_MS);
200	<	assertEquals(2, lock.getQueueLength());
201	<	t1.interrupt();
202	<	Thread.sleep(SHORT_DELAY_MS);
203	<	assertEquals(1, lock.getQueueLength());
204	<	lock.unlock();
205	<	Thread.sleep(SHORT_DELAY_MS);
206	<	assertEquals(0, lock.getQueueLength());
207	<	t1.join();
208	<	t2.join();
209	<	} catch(Exception e){
210	<	unexpectedException();
211	<	}
212	<	}
192	>	assertEquals(0, lock.getQueueLength());
193	>	lock.lock();
194	>	t1.start();
195	>	delay(SHORT_DELAY_MS);
196	>	assertEquals(1, lock.getQueueLength());
197	>	t2.start();
198	>	delay(SHORT_DELAY_MS);
199	>	assertEquals(2, lock.getQueueLength());
200	>	t1.interrupt();
201	>	delay(SHORT_DELAY_MS);
202	>	assertEquals(1, lock.getQueueLength());
203	>	lock.unlock();
204	>	delay(SHORT_DELAY_MS);
205	>	assertEquals(0, lock.getQueueLength());
206	>	awaitTermination(t1);
207	>	awaitTermination(t2);
208	>	}
209	>
210	>	/**
211	>	* hasQueuedThread(null) throws NPE
212	>	*/
213	>	public void testHasQueuedThreadNPE() {
214	>	final ReentrantLock sync = new ReentrantLock();
215	>	try {
216	>	sync.hasQueuedThread(null);
217	>	shouldThrow();
218	>	} catch (NullPointerException success) {}
219	>	}
220	>
221	>	/**
222	>	* hasQueuedThread reports whether a thread is queued.
223	>	*/
224	>	public void testHasQueuedThread() throws InterruptedException {
225	>	final ReentrantLock sync = new ReentrantLock();
226	>	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
227	>	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
228	>	assertFalse(sync.hasQueuedThread(t1));
229	>	assertFalse(sync.hasQueuedThread(t2));
230	>	sync.lock();
231	>	t1.start();
232	>	delay(SHORT_DELAY_MS);
233	>	assertTrue(sync.hasQueuedThread(t1));
234	>	t2.start();
235	>	delay(SHORT_DELAY_MS);
236	>	assertTrue(sync.hasQueuedThread(t1));
237	>	assertTrue(sync.hasQueuedThread(t2));
238	>	t1.interrupt();
239	>	delay(SHORT_DELAY_MS);
240	>	assertFalse(sync.hasQueuedThread(t1));
241	>	assertTrue(sync.hasQueuedThread(t2));
242	>	sync.unlock();
243	>	delay(SHORT_DELAY_MS);
244	>	assertFalse(sync.hasQueuedThread(t1));
245	>	delay(SHORT_DELAY_MS);
246	>	assertFalse(sync.hasQueuedThread(t2));
247	>	awaitTermination(t1);
248	>	awaitTermination(t2);
249	>	}
250	>
251
252		/**
253		* getQueuedThreads includes waiting threads
254		*/
255	<	public void testGetQueuedThreads() {
256	<	final PublicReentrantLock lock = new PublicReentrantLock();
255	>	public void testGetQueuedThreads() throws InterruptedException {
256	>	final PublicReentrantLock lock = new PublicReentrantLock();
257		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
258		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
259	<	try {
260	<	assertTrue(lock.getQueuedThreads().isEmpty());
261	<	lock.lock();
262	<	assertTrue(lock.getQueuedThreads().isEmpty());
263	<	t1.start();
264	<	Thread.sleep(SHORT_DELAY_MS);
265	<	assertTrue(lock.getQueuedThreads().contains(t1));
266	<	t2.start();
267	<	Thread.sleep(SHORT_DELAY_MS);
268	<	assertTrue(lock.getQueuedThreads().contains(t1));
269	<	assertTrue(lock.getQueuedThreads().contains(t2));
270	<	t1.interrupt();
271	<	Thread.sleep(SHORT_DELAY_MS);
272	<	assertFalse(lock.getQueuedThreads().contains(t1));
273	<	assertTrue(lock.getQueuedThreads().contains(t2));
274	<	lock.unlock();
275	<	Thread.sleep(SHORT_DELAY_MS);
276	<	assertTrue(lock.getQueuedThreads().isEmpty());
277	<	t1.join();
278	<	t2.join();
234	<	} catch(Exception e){
235	<	unexpectedException();
236	<	}
237	<	}
259	>	assertTrue(lock.getQueuedThreads().isEmpty());
260	>	lock.lock();
261	>	assertTrue(lock.getQueuedThreads().isEmpty());
262	>	t1.start();
263	>	delay(SHORT_DELAY_MS);
264	>	assertTrue(lock.getQueuedThreads().contains(t1));
265	>	t2.start();
266	>	delay(SHORT_DELAY_MS);
267	>	assertTrue(lock.getQueuedThreads().contains(t1));
268	>	assertTrue(lock.getQueuedThreads().contains(t2));
269	>	t1.interrupt();
270	>	delay(SHORT_DELAY_MS);
271	>	assertFalse(lock.getQueuedThreads().contains(t1));
272	>	assertTrue(lock.getQueuedThreads().contains(t2));
273	>	lock.unlock();
274	>	delay(SHORT_DELAY_MS);
275	>	assertTrue(lock.getQueuedThreads().isEmpty());
276	>	awaitTermination(t1);
277	>	awaitTermination(t2);
278	>	}
279
280
281		/**
282		* timed tryLock is interruptible.
283		*/
284	<	public void testInterruptedException2() {
285	<	final ReentrantLock lock = new ReentrantLock();
286	<	lock.lock();
287	<	Thread t = new Thread(new Runnable() {
288	<	public void run() {
289	<	try {
290	<	lock.tryLock(MEDIUM_DELAY_MS,TimeUnit.MILLISECONDS);
291	<	threadShouldThrow();
292	<	} catch(InterruptedException success){}
293	<	}
294	<	});
254	<	try {
255	<	t.start();
256	<	t.interrupt();
257	<	} catch(Exception e){
258	<	unexpectedException();
259	<	}
284	>	public void testInterruptedException2() throws InterruptedException {
285	>	final ReentrantLock lock = new ReentrantLock();
286	>	lock.lock();
287	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
288	>	public void realRun() throws InterruptedException {
289	>	lock.tryLock(MEDIUM_DELAY_MS,MILLISECONDS);
290	>	}});
291	>
292	>	delay(SHORT_DELAY_MS);
293	>	t.interrupt();
294	>	awaitTermination(t);
295		}
296
297
298		/**
299		* TryLock on a locked lock fails
300		*/
301	<	public void testTryLockWhenLocked() {
302	<	final ReentrantLock lock = new ReentrantLock();
303	<	lock.lock();
304	<	Thread t = new Thread(new Runnable() {
305	<	public void run() {
306	<	threadAssertFalse(lock.tryLock());
307	<	}
308	<	});
309	<	try {
310	<	t.start();
311	<	t.join();
277	<	lock.unlock();
278	<	} catch(Exception e){
279	<	unexpectedException();
280	<	}
281	<	}
301	>	public void testTryLockWhenLocked() throws InterruptedException {
302	>	final ReentrantLock lock = new ReentrantLock();
303	>	lock.lock();
304	>	Thread t = newStartedThread(new CheckedRunnable() {
305	>	public void realRun() {
306	>	assertFalse(lock.tryLock());
307	>	}});
308	>
309	>	awaitTermination(t);
310	>	lock.unlock();
311	>	}
312
313		/**
314		* Timed tryLock on a locked lock times out
315		*/
316	<	public void testTryLock_Timeout() {
317	<	final ReentrantLock lock = new ReentrantLock();
318	<	lock.lock();
319	<	Thread t = new Thread(new Runnable() {
320	<	public void run() {
321	<	try {
322	<	threadAssertFalse(lock.tryLock(1, TimeUnit.MILLISECONDS));
323	<	} catch (Exception ex) {
324	<	threadUnexpectedException();
325	<	}
326	<	}
327	<	});
298	<	try {
299	<	t.start();
300	<	t.join();
301	<	lock.unlock();
302	<	} catch(Exception e){
303	<	unexpectedException();
304	<	}
305	<	}
306	<
316	>	public void testTryLock_Timeout() throws InterruptedException {
317	>	final ReentrantLock lock = new ReentrantLock();
318	>	lock.lock();
319	>	Thread t = newStartedThread(new CheckedRunnable() {
320	>	public void realRun() throws InterruptedException {
321	>	assertFalse(lock.tryLock(1, MILLISECONDS));
322	>	}});
323	>
324	>	awaitTermination(t);
325	>	lock.unlock();
326	>	}
327	>
328		/**
329		* getHoldCount returns number of recursive holds
330		*/
331		public void testGetHoldCount() {
332	<	ReentrantLock lock = new ReentrantLock();
333	<	for(int i = 1; i <= SIZE; i++) {
334	<	lock.lock();
335	<	assertEquals(i,lock.getHoldCount());
336	<	}
337	<	for(int i = SIZE; i > 0; i--) {
338	<	lock.unlock();
339	<	assertEquals(i-1,lock.getHoldCount());
340	<	}
332	>	ReentrantLock lock = new ReentrantLock();
333	>	for (int i = 1; i <= SIZE; i++) {
334	>	lock.lock();
335	>	assertEquals(i, lock.getHoldCount());
336	>	}
337	>	for (int i = SIZE; i > 0; i--) {
338	>	lock.unlock();
339	>	assertEquals(i-1, lock.getHoldCount());
340	>	}
341		}
342	<
343	<
342	>
343	>
344		/**
345		* isLocked is true when locked and false when not
346		*/
347	<	public void testIsLocked() {
348	<	final ReentrantLock lock = new ReentrantLock();
349	<	lock.lock();
350	<	assertTrue(lock.isLocked());
351	<	lock.unlock();
352	<	assertFalse(lock.isLocked());
353	<	Thread t = new Thread(new Runnable() {
354	<	public void run() {
355	<	lock.lock();
356	<	try {
357	<	Thread.sleep(SMALL_DELAY_MS);
358	<	}
359	<	catch(Exception e) {
360	<	threadUnexpectedException();
361	<	}
362	<	lock.unlock();
363	<	}
343	<	});
344	<	try {
345	<	t.start();
346	<	Thread.sleep(SHORT_DELAY_MS);
347	<	assertTrue(lock.isLocked());
348	<	t.join();
349	<	assertFalse(lock.isLocked());
350	<	} catch(Exception e){
351	<	unexpectedException();
352	<	}
347	>	public void testIsLocked() throws InterruptedException {
348	>	final ReentrantLock lock = new ReentrantLock();
349	>	lock.lock();
350	>	assertTrue(lock.isLocked());
351	>	lock.unlock();
352	>	assertFalse(lock.isLocked());
353	>	Thread t = newStartedThread(new CheckedRunnable() {
354	>	public void realRun() throws InterruptedException {
355	>	lock.lock();
356	>	delay(SMALL_DELAY_MS);
357	>	lock.unlock();
358	>	}});
359	>
360	>	delay(SHORT_DELAY_MS);
361	>	assertTrue(lock.isLocked());
362	>	awaitTermination(t);
363	>	assertFalse(lock.isLocked());
364		}
365
366
367		/**
368		* lockInterruptibly is interruptible.
369		*/
370	<	public void testLockInterruptibly1() {
371	<	final ReentrantLock lock = new ReentrantLock();
372	<	lock.lock();
373	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
374	<	try {
375	<	t.start();
376	<	t.interrupt();
377	<	lock.unlock();
378	<	t.join();
379	<	} catch(Exception e){
369	<	unexpectedException();
370	<	}
371	<	}
370	>	public void testLockInterruptibly1() throws InterruptedException {
371	>	final ReentrantLock lock = new ReentrantLock();
372	>	lock.lock();
373	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
374	>	delay(SHORT_DELAY_MS);
375	>	t.interrupt();
376	>	delay(SHORT_DELAY_MS);
377	>	lock.unlock();
378	>	awaitTermination(t);
379	>	}
380
381		/**
382		* lockInterruptibly succeeds when unlocked, else is interruptible
383		*/
384	<	public void testLockInterruptibly2() {
385	<	final ReentrantLock lock = new ReentrantLock();
386	<	try {
387	<	lock.lockInterruptibly();
388	<	} catch(Exception e) {
389	<	unexpectedException();
390	<	}
391	<	Thread t = new Thread(new InterruptedLockRunnable(lock));
392	<	try {
385	<	t.start();
386	<	t.interrupt();
387	<	assertTrue(lock.isLocked());
388	<	assertTrue(lock.isHeldByCurrentThread());
389	<	t.join();
390	<	} catch(Exception e){
391	<	unexpectedException();
392	<	}
384	>	public void testLockInterruptibly2() throws InterruptedException {
385	>	final ReentrantLock lock = new ReentrantLock();
386	>	lock.lockInterruptibly();
387	>	Thread t = newStartedThread(new InterruptedLockRunnable(lock));
388	>	delay(SHORT_DELAY_MS);
389	>	t.interrupt();
390	>	assertTrue(lock.isLocked());
391	>	assertTrue(lock.isHeldByCurrentThread());
392	>	awaitTermination(t);
393		}
394
395		/**
396		* Calling await without holding lock throws IllegalMonitorStateException
397		*/
398	<	public void testAwait_IllegalMonitor() {
399	<	final ReentrantLock lock = new ReentrantLock();
398	>	public void testAwait_IllegalMonitor() throws InterruptedException {
399	>	final ReentrantLock lock = new ReentrantLock();
400		final Condition c = lock.newCondition();
401		try {
402		c.await();
403		shouldThrow();
404	<	}
405	<	catch (IllegalMonitorStateException success) {
406	<	}
407	<	catch (Exception ex) {
408	<	unexpectedException();
409	<	}
404	>	} catch (IllegalMonitorStateException success) {}
405		}
406
407		/**
408		* Calling signal without holding lock throws IllegalMonitorStateException
409		*/
410		public void testSignal_IllegalMonitor() {
411	<	final ReentrantLock lock = new ReentrantLock();
411	>	final ReentrantLock lock = new ReentrantLock();
412		final Condition c = lock.newCondition();
413		try {
414		c.signal();
415		shouldThrow();
416	<	}
422	<	catch (IllegalMonitorStateException success) {
423	<	}
424	<	catch (Exception ex) {
425	<	unexpectedException();
426	<	}
416	>	} catch (IllegalMonitorStateException success) {}
417		}
418
419		/**
420		* awaitNanos without a signal times out
421		*/
422	<	public void testAwaitNanos_Timeout() {
423	<	final ReentrantLock lock = new ReentrantLock();
422	>	public void testAwaitNanos_Timeout() throws InterruptedException {
423	>	final ReentrantLock lock = new ReentrantLock();
424		final Condition c = lock.newCondition();
425	<	try {
426	<	lock.lock();
427	<	long t = c.awaitNanos(100);
428	<	assertTrue(t <= 0);
439	<	lock.unlock();
440	<	}
441	<	catch (Exception ex) {
442	<	unexpectedException();
443	<	}
425	>	lock.lock();
426	>	long t = c.awaitNanos(100);
427	>	assertTrue(t <= 0);
428	>	lock.unlock();
429		}
430
431		/**
432	<	*  timed await without a signal times out
432	>	* timed await without a signal times out
433		*/
434	<	public void testAwait_Timeout() {
435	<	final ReentrantLock lock = new ReentrantLock();
434	>	public void testAwait_Timeout() throws InterruptedException {
435	>	final ReentrantLock lock = new ReentrantLock();
436		final Condition c = lock.newCondition();
437	<	try {
438	<	lock.lock();
439	<	assertFalse(c.await(SHORT_DELAY_MS, TimeUnit.MILLISECONDS));
455	<	lock.unlock();
456	<	}
457	<	catch (Exception ex) {
458	<	unexpectedException();
459	<	}
437	>	lock.lock();
438	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
439	>	lock.unlock();
440		}
441
442		/**
443		* awaitUntil without a signal times out
444		*/
445	<	public void testAwaitUntil_Timeout() {
446	<	final ReentrantLock lock = new ReentrantLock();
445	>	public void testAwaitUntil_Timeout() throws InterruptedException {
446	>	final ReentrantLock lock = new ReentrantLock();
447		final Condition c = lock.newCondition();
448	<	try {
449	<	lock.lock();
450	<	java.util.Date d = new java.util.Date();
451	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
472	<	lock.unlock();
473	<	}
474	<	catch (Exception ex) {
475	<	unexpectedException();
476	<	}
448	>	lock.lock();
449	>	java.util.Date d = new java.util.Date();
450	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
451	>	lock.unlock();
452		}
453
454		/**
455		* await returns when signalled
456		*/
457	<	public void testAwait() {
458	<	final ReentrantLock lock = new ReentrantLock();
457	>	public void testAwait() throws InterruptedException {
458	>	final ReentrantLock lock = new ReentrantLock();
459		final Condition c = lock.newCondition();
460	<	Thread t = new Thread(new Runnable() {
461	<	public void run() {
462	<	try {
463	<	lock.lock();
464	<	c.await();
465	<	lock.unlock();
466	<	}
467	<	catch(InterruptedException e) {
468	<	threadUnexpectedException();
469	<	}
470	<	}
471	<	});
497	<
498	<	try {
499	<	t.start();
500	<	Thread.sleep(SHORT_DELAY_MS);
501	<	lock.lock();
502	<	c.signal();
503	<	lock.unlock();
504	<	t.join(SHORT_DELAY_MS);
505	<	assertFalse(t.isAlive());
506	<	}
507	<	catch (Exception ex) {
508	<	unexpectedException();
509	<	}
460	>	Thread t = newStartedThread(new CheckedRunnable() {
461	>	public void realRun() throws InterruptedException {
462	>	lock.lock();
463	>	c.await();
464	>	lock.unlock();
465	>	}});
466	>
467	>	delay(SHORT_DELAY_MS);
468	>	lock.lock();
469	>	c.signal();
470	>	lock.unlock();
471	>	awaitTermination(t);
472		}
473
474		/**
475		* hasWaiters throws NPE if null
476		*/
477		public void testHasWaitersNPE() {
478	<	final ReentrantLock lock = new ReentrantLock();
478	>	final ReentrantLock lock = new ReentrantLock();
479		try {
480		lock.hasWaiters(null);
481		shouldThrow();
482	<	} catch (NullPointerException success) {
521	<	} catch (Exception ex) {
522	<	unexpectedException();
523	<	}
482	>	} catch (NullPointerException success) {}
483		}
484
485		/**
486		* getWaitQueueLength throws NPE if null
487		*/
488		public void testGetWaitQueueLengthNPE() {
489	<	final ReentrantLock lock = new ReentrantLock();
489	>	final ReentrantLock lock = new ReentrantLock();
490		try {
491		lock.getWaitQueueLength(null);
492		shouldThrow();
493	<	} catch (NullPointerException success) {
535	<	} catch (Exception ex) {
536	<	unexpectedException();
537	<	}
493	>	} catch (NullPointerException success) {}
494		}
495
496
#	Line 542 | Line 498 | public class ReentrantLockTest extends J
498		* getWaitingThreads throws NPE if null
499		*/
500		public void testGetWaitingThreadsNPE() {
501	<	final PublicReentrantLock lock = new PublicReentrantLock();
501	>	final PublicReentrantLock lock = new PublicReentrantLock();
502		try {
503		lock.getWaitingThreads(null);
504		shouldThrow();
505	<	} catch (NullPointerException success) {
550	<	} catch (Exception ex) {
551	<	unexpectedException();
552	<	}
505	>	} catch (NullPointerException success) {}
506		}
507
508
#	Line 557 | Line 510 | public class ReentrantLockTest extends J
510		* hasWaiters throws IAE if not owned
511		*/
512		public void testHasWaitersIAE() {
513	<	final ReentrantLock lock = new ReentrantLock();
514	<	final Condition c = (lock.newCondition());
515	<	final ReentrantLock lock2 = new ReentrantLock();
513	>	final ReentrantLock lock = new ReentrantLock();
514	>	final Condition c = lock.newCondition();
515	>	final ReentrantLock lock2 = new ReentrantLock();
516		try {
517		lock2.hasWaiters(c);
518		shouldThrow();
519	<	} catch (IllegalArgumentException success) {
567	<	} catch (Exception ex) {
568	<	unexpectedException();
569	<	}
519	>	} catch (IllegalArgumentException success) {}
520		}
521
522		/**
523		* hasWaiters throws IMSE if not locked
524		*/
525		public void testHasWaitersIMSE() {
526	<	final ReentrantLock lock = new ReentrantLock();
527	<	final Condition c = (lock.newCondition());
526	>	final ReentrantLock lock = new ReentrantLock();
527	>	final Condition c = lock.newCondition();
528		try {
529		lock.hasWaiters(c);
530		shouldThrow();
531	<	} catch (IllegalMonitorStateException success) {
582	<	} catch (Exception ex) {
583	<	unexpectedException();
584	<	}
531	>	} catch (IllegalMonitorStateException success) {}
532		}
533
534
#	Line 589 | Line 536 | public class ReentrantLockTest extends J
536		* getWaitQueueLength throws IAE if not owned
537		*/
538		public void testGetWaitQueueLengthIAE() {
539	<	final ReentrantLock lock = new ReentrantLock();
540	<	final Condition c = (lock.newCondition());
541	<	final ReentrantLock lock2 = new ReentrantLock();
539	>	final ReentrantLock lock = new ReentrantLock();
540	>	final Condition c = lock.newCondition();
541	>	final ReentrantLock lock2 = new ReentrantLock();
542		try {
543		lock2.getWaitQueueLength(c);
544		shouldThrow();
545	<	} catch (IllegalArgumentException success) {
599	<	} catch (Exception ex) {
600	<	unexpectedException();
601	<	}
545	>	} catch (IllegalArgumentException success) {}
546		}
547
548		/**
549		* getWaitQueueLength throws IMSE if not locked
550		*/
551		public void testGetWaitQueueLengthIMSE() {
552	<	final ReentrantLock lock = new ReentrantLock();
553	<	final Condition c = (lock.newCondition());
552	>	final ReentrantLock lock = new ReentrantLock();
553	>	final Condition c = lock.newCondition();
554		try {
555		lock.getWaitQueueLength(c);
556		shouldThrow();
557	<	} catch (IllegalMonitorStateException success) {
614	<	} catch (Exception ex) {
615	<	unexpectedException();
616	<	}
557	>	} catch (IllegalMonitorStateException success) {}
558		}
559
560
#	Line 621 | Line 562 | public class ReentrantLockTest extends J
562		* getWaitingThreads throws IAE if not owned
563		*/
564		public void testGetWaitingThreadsIAE() {
565	<	final PublicReentrantLock lock = new PublicReentrantLock();
566	<	final Condition c = (lock.newCondition());
567	<	final PublicReentrantLock lock2 = new PublicReentrantLock();
565	>	final PublicReentrantLock lock = new PublicReentrantLock();
566	>	final Condition c = lock.newCondition();
567	>	final PublicReentrantLock lock2 = new PublicReentrantLock();
568		try {
569		lock2.getWaitingThreads(c);
570		shouldThrow();
571	<	} catch (IllegalArgumentException success) {
631	<	} catch (Exception ex) {
632	<	unexpectedException();
633	<	}
571	>	} catch (IllegalArgumentException success) {}
572		}
573
574		/**
575		* getWaitingThreads throws IMSE if not locked
576		*/
577		public void testGetWaitingThreadsIMSE() {
578	<	final PublicReentrantLock lock = new PublicReentrantLock();
579	<	final Condition c = (lock.newCondition());
578	>	final PublicReentrantLock lock = new PublicReentrantLock();
579	>	final Condition c = lock.newCondition();
580		try {
581		lock.getWaitingThreads(c);
582		shouldThrow();
583	<	} catch (IllegalMonitorStateException success) {
646	<	} catch (Exception ex) {
647	<	unexpectedException();
648	<	}
583	>	} catch (IllegalMonitorStateException success) {}
584		}
585
586
652	–
587		/**
588		* hasWaiters returns true when a thread is waiting, else false
589		*/
590	<	public void testHasWaiters() {
591	<	final ReentrantLock lock = new ReentrantLock();
590	>	public void testHasWaiters() throws InterruptedException {
591	>	final ReentrantLock lock = new ReentrantLock();
592		final Condition c = lock.newCondition();
593	<	Thread t = new Thread(new Runnable() {
594	<	public void run() {
595	<	try {
596	<	lock.lock();
597	<	threadAssertFalse(lock.hasWaiters(c));
598	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
599	<	c.await();
600	<	lock.unlock();
601	<	}
602	<	catch(InterruptedException e) {
603	<	threadUnexpectedException();
604	<	}
605	<	}
606	<	});
607	<
608	<	try {
609	<	t.start();
610	<	Thread.sleep(SHORT_DELAY_MS);
611	<	lock.lock();
612	<	assertTrue(lock.hasWaiters(c));
613	<	assertEquals(1, lock.getWaitQueueLength(c));
680	<	c.signal();
681	<	lock.unlock();
682	<	Thread.sleep(SHORT_DELAY_MS);
683	<	lock.lock();
684	<	assertFalse(lock.hasWaiters(c));
685	<	assertEquals(0, lock.getWaitQueueLength(c));
686	<	lock.unlock();
687	<	t.join(SHORT_DELAY_MS);
688	<	assertFalse(t.isAlive());
689	<	}
690	<	catch (Exception ex) {
691	<	unexpectedException();
692	<	}
593	>	Thread t = newStartedThread(new CheckedRunnable() {
594	>	public void realRun() throws InterruptedException {
595	>	lock.lock();
596	>	assertFalse(lock.hasWaiters(c));
597	>	assertEquals(0, lock.getWaitQueueLength(c));
598	>	c.await();
599	>	lock.unlock();
600	>	}});
601	>
602	>	delay(SHORT_DELAY_MS);
603	>	lock.lock();
604	>	assertTrue(lock.hasWaiters(c));
605	>	assertEquals(1, lock.getWaitQueueLength(c));
606	>	c.signal();
607	>	lock.unlock();
608	>	delay(SHORT_DELAY_MS);
609	>	lock.lock();
610	>	assertFalse(lock.hasWaiters(c));
611	>	assertEquals(0, lock.getWaitQueueLength(c));
612	>	lock.unlock();
613	>	awaitTermination(t);
614		}
615
616		/**
617		* getWaitQueueLength returns number of waiting threads
618		*/
619	<	public void testGetWaitQueueLength() {
620	<	final ReentrantLock lock = new ReentrantLock();
619	>	public void testGetWaitQueueLength() throws InterruptedException {
620	>	final ReentrantLock lock = new ReentrantLock();
621		final Condition c = lock.newCondition();
622	<	Thread t1 = new Thread(new Runnable() {
623	<	public void run() {
624	<	try {
625	<	lock.lock();
626	<	threadAssertFalse(lock.hasWaiters(c));
627	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
628	<	c.await();
629	<	lock.unlock();
630	<	}
631	<	catch(InterruptedException e) {
632	<	threadUnexpectedException();
633	<	}
634	<	}
635	<	});
636	<
637	<	Thread t2 = new Thread(new Runnable() {
638	<	public void run() {
639	<	try {
640	<	lock.lock();
641	<	threadAssertTrue(lock.hasWaiters(c));
642	<	threadAssertEquals(1, lock.getWaitQueueLength(c));
643	<	c.await();
644	<	lock.unlock();
645	<	}
646	<	catch(InterruptedException e) {
647	<	threadUnexpectedException();
648	<	}
649	<	}
650	<	});
651	<
652	<	try {
653	<	t1.start();
654	<	Thread.sleep(SHORT_DELAY_MS);
734	<	t2.start();
735	<	Thread.sleep(SHORT_DELAY_MS);
736	<	lock.lock();
737	<	assertTrue(lock.hasWaiters(c));
738	<	assertEquals(2, lock.getWaitQueueLength(c));
739	<	c.signalAll();
740	<	lock.unlock();
741	<	Thread.sleep(SHORT_DELAY_MS);
742	<	lock.lock();
743	<	assertFalse(lock.hasWaiters(c));
744	<	assertEquals(0, lock.getWaitQueueLength(c));
745	<	lock.unlock();
746	<	t1.join(SHORT_DELAY_MS);
747	<	t2.join(SHORT_DELAY_MS);
748	<	assertFalse(t1.isAlive());
749	<	assertFalse(t2.isAlive());
750	<	}
751	<	catch (Exception ex) {
752	<	unexpectedException();
753	<	}
622	>	Thread t1 = newStartedThread(new CheckedRunnable() {
623	>	public void realRun() throws InterruptedException {
624	>	lock.lock();
625	>	assertFalse(lock.hasWaiters(c));
626	>	assertEquals(0, lock.getWaitQueueLength(c));
627	>	c.await();
628	>	lock.unlock();
629	>	}});
630	>
631	>	delay(SHORT_DELAY_MS);
632	>
633	>	Thread t2 = newStartedThread(new CheckedRunnable() {
634	>	public void realRun() throws InterruptedException {
635	>	lock.lock();
636	>	assertTrue(lock.hasWaiters(c));
637	>	assertEquals(1, lock.getWaitQueueLength(c));
638	>	c.await();
639	>	lock.unlock();
640	>	}});
641	>
642	>	delay(SHORT_DELAY_MS);
643	>	lock.lock();
644	>	assertTrue(lock.hasWaiters(c));
645	>	assertEquals(2, lock.getWaitQueueLength(c));
646	>	c.signalAll();
647	>	lock.unlock();
648	>	delay(SHORT_DELAY_MS);
649	>	lock.lock();
650	>	assertFalse(lock.hasWaiters(c));
651	>	assertEquals(0, lock.getWaitQueueLength(c));
652	>	lock.unlock();
653	>	awaitTermination(t1);
654	>	awaitTermination(t2);
655		}
656
657		/**
658		* getWaitingThreads returns only and all waiting threads
659		*/
660	<	public void testGetWaitingThreads() {
661	<	final PublicReentrantLock lock = new PublicReentrantLock();
660	>	public void testGetWaitingThreads() throws InterruptedException {
661	>	final PublicReentrantLock lock = new PublicReentrantLock();
662		final Condition c = lock.newCondition();
663	<	Thread t1 = new Thread(new Runnable() {
664	<	public void run() {
665	<	try {
666	<	lock.lock();
667	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
668	<	c.await();
669	<	lock.unlock();
670	<	}
671	<	catch(InterruptedException e) {
672	<	threadUnexpectedException();
673	<	}
674	<	}
675	<	});
676	<
677	<	Thread t2 = new Thread(new Runnable() {
678	<	public void run() {
679	<	try {
680	<	lock.lock();
681	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
682	<	c.await();
683	<	lock.unlock();
684	<	}
685	<	catch(InterruptedException e) {
686	<	threadUnexpectedException();
687	<	}
688	<	}
689	<	});
663	>	Thread t1 = new Thread(new CheckedRunnable() {
664	>	public void realRun() throws InterruptedException {
665	>	lock.lock();
666	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
667	>	c.await();
668	>	lock.unlock();
669	>	}});
670	>
671	>	Thread t2 = new Thread(new CheckedRunnable() {
672	>	public void realRun() throws InterruptedException {
673	>	lock.lock();
674	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
675	>	c.await();
676	>	lock.unlock();
677	>	}});
678	>
679	>	lock.lock();
680	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
681	>	lock.unlock();
682	>	t1.start();
683	>	delay(SHORT_DELAY_MS);
684	>	t2.start();
685	>	delay(SHORT_DELAY_MS);
686	>	lock.lock();
687	>	assertTrue(lock.hasWaiters(c));
688	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
689	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
690	>	c.signalAll();
691	>	lock.unlock();
692	>	delay(SHORT_DELAY_MS);
693	>	lock.lock();
694	>	assertFalse(lock.hasWaiters(c));
695	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
696	>	lock.unlock();
697	>	awaitTermination(t1);
698	>	awaitTermination(t2);
699	>	}
700	>
701	>	/** A helper class for uninterruptible wait tests */
702	>	class UninterruptibleThread extends Thread {
703	>	private ReentrantLock lock;
704	>	private Condition c;
705	>
706	>	public volatile boolean canAwake = false;
707	>	public volatile boolean interrupted = false;
708	>	public volatile boolean lockStarted = false;
709	>
710	>	public UninterruptibleThread(ReentrantLock lock, Condition c) {
711	>	this.lock = lock;
712	>	this.c = c;
713	>	}
714	>
715	>	public synchronized void run() {
716	>	lock.lock();
717	>	lockStarted = true;
718	>
719	>	while (!canAwake) {
720	>	c.awaitUninterruptibly();
721	>	}
722
723	<	try {
791	<	lock.lock();
792	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
793	<	lock.unlock();
794	<	t1.start();
795	<	Thread.sleep(SHORT_DELAY_MS);
796	<	t2.start();
797	<	Thread.sleep(SHORT_DELAY_MS);
798	<	lock.lock();
799	<	assertTrue(lock.hasWaiters(c));
800	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
801	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
802	<	c.signalAll();
803	<	lock.unlock();
804	<	Thread.sleep(SHORT_DELAY_MS);
805	<	lock.lock();
806	<	assertFalse(lock.hasWaiters(c));
807	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
723	>	interrupted = isInterrupted();
724		lock.unlock();
809	–	t1.join(SHORT_DELAY_MS);
810	–	t2.join(SHORT_DELAY_MS);
811	–	assertFalse(t1.isAlive());
812	–	assertFalse(t2.isAlive());
813	–	}
814	–	catch (Exception ex) {
815	–	unexpectedException();
725		}
726		}
727
819	–
820	–
728		/**
729		* awaitUninterruptibly doesn't abort on interrupt
730		*/
731	<	public void testAwaitUninterruptibly() {
732	<	final ReentrantLock lock = new ReentrantLock();
731	>	public void testAwaitUninterruptibly() throws InterruptedException {
732	>	final ReentrantLock lock = new ReentrantLock();
733		final Condition c = lock.newCondition();
734	<	Thread t = new Thread(new Runnable() {
735	<	public void run() {
736	<	lock.lock();
830	<	c.awaitUninterruptibly();
831	<	lock.unlock();
832	<	}
833	<	});
734	>	UninterruptibleThread thread = new UninterruptibleThread(lock, c);
735	>
736	>	thread.start();
737
738	+	while (!thread.lockStarted) {
739	+	delay(100);
740	+	}
741	+
742	+	lock.lock();
743		try {
744	<	t.start();
745	<	Thread.sleep(SHORT_DELAY_MS);
838	<	t.interrupt();
839	<	lock.lock();
744	>	thread.interrupt();
745	>	thread.canAwake = true;
746		c.signal();
747	+	} finally {
748		lock.unlock();
842	–	assert(t.isInterrupted());
843	–	t.join(SHORT_DELAY_MS);
844	–	assertFalse(t.isAlive());
845	–	}
846	–	catch (Exception ex) {
847	–	unexpectedException();
749		}
750	+
751	+	thread.join();
752	+	assertTrue(thread.interrupted);
753	+	assertFalse(thread.isAlive());
754		}
755
756		/**
757		* await is interruptible
758		*/
759	<	public void testAwait_Interrupt() {
760	<	final ReentrantLock lock = new ReentrantLock();
759	>	public void testAwait_Interrupt() throws InterruptedException {
760	>	final PublicReentrantLock lock = new PublicReentrantLock();
761		final Condition c = lock.newCondition();
762	<	Thread t = new Thread(new Runnable() {
763	<	public void run() {
764	<	try {
765	<	lock.lock();
766	<	c.await();
767	<	lock.unlock();
768	<	threadShouldThrow();
769	<	}
770	<	catch(InterruptedException success) {
771	<	}
772	<	}
773	<	});
774	<
775	<	try {
776	<	t.start();
777	<	Thread.sleep(SHORT_DELAY_MS);
778	<	t.interrupt();
779	<	t.join(SHORT_DELAY_MS);
780	<	assertFalse(t.isAlive());
781	<	}
782	<	catch (Exception ex) {
783	<	unexpectedException();
784	<	}
762	>	final CountDownLatch locked = new CountDownLatch(1);
763	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
764	>	public void realRun() throws InterruptedException {
765	>	lock.lock();
766	>	assertTrue(lock.isLocked());
767	>	assertTrue(lock.isHeldByCurrentThread());
768	>	assertHasNoWaiters(lock, c);
769	>	locked.countDown();
770	>	try {
771	>	c.await();
772	>	} finally {
773	>	assertTrue(lock.isLocked());
774	>	assertTrue(lock.isHeldByCurrentThread());
775	>	assertHasNoWaiters(lock, c);
776	>	lock.unlock();
777	>	assertFalse(Thread.interrupted());
778	>	}
779	>	}});
780	>
781	>	locked.await();
782	>	assertHasWaiters(lock, c, t);
783	>	t.interrupt();
784	>	awaitTermination(t);
785	>	assertFalse(lock.isLocked());
786		}
787
788		/**
789		* awaitNanos is interruptible
790		*/
791	<	public void testAwaitNanos_Interrupt() {
792	<	final ReentrantLock lock = new ReentrantLock();
791	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
792	>	final ReentrantLock lock = new ReentrantLock();
793		final Condition c = lock.newCondition();
794	<	Thread t = new Thread(new Runnable() {
795	<	public void run() {
796	<	try {
797	<	lock.lock();
798	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
799	<	lock.unlock();
800	<	threadShouldThrow();
801	<	}
802	<	catch(InterruptedException success) {
897	<	}
898	<	}
899	<	});
900	<
901	<	try {
902	<	t.start();
903	<	Thread.sleep(SHORT_DELAY_MS);
904	<	t.interrupt();
905	<	t.join(SHORT_DELAY_MS);
906	<	assertFalse(t.isAlive());
907	<	}
908	<	catch (Exception ex) {
909	<	unexpectedException();
910	<	}
794	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
795	>	public void realRun() throws InterruptedException {
796	>	lock.lock();
797	>	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
798	>	}});
799	>
800	>	delay(SHORT_DELAY_MS);
801	>	t.interrupt();
802	>	awaitTermination(t);
803		}
804
805		/**
806		* awaitUntil is interruptible
807		*/
808	<	public void testAwaitUntil_Interrupt() {
809	<	final ReentrantLock lock = new ReentrantLock();
808	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
809	>	final ReentrantLock lock = new ReentrantLock();
810		final Condition c = lock.newCondition();
811	<	Thread t = new Thread(new Runnable() {
812	<	public void run() {
813	<	try {
814	<	lock.lock();
815	<	java.util.Date d = new java.util.Date();
816	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
817	<	lock.unlock();
818	<	threadShouldThrow();
819	<	}
820	<	catch(InterruptedException success) {
929	<	}
930	<	}
931	<	});
932	<
933	<	try {
934	<	t.start();
935	<	Thread.sleep(SHORT_DELAY_MS);
936	<	t.interrupt();
937	<	t.join(SHORT_DELAY_MS);
938	<	assertFalse(t.isAlive());
939	<	}
940	<	catch (Exception ex) {
941	<	unexpectedException();
942	<	}
811	>	Thread t = newStartedThread(new CheckedInterruptedRunnable() {
812	>	public void realRun() throws InterruptedException {
813	>	lock.lock();
814	>	java.util.Date d = new java.util.Date();
815	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
816	>	}});
817	>
818	>	delay(SHORT_DELAY_MS);
819	>	t.interrupt();
820	>	awaitTermination(t);
821		}
822
823		/**
824		* signalAll wakes up all threads
825		*/
826	<	public void testSignalAll() {
827	<	final ReentrantLock lock = new ReentrantLock();
826	>	public void testSignalAll() throws InterruptedException {
827	>	final ReentrantLock lock = new ReentrantLock();
828		final Condition c = lock.newCondition();
829	<	Thread t1 = new Thread(new Runnable() {
830	<	public void run() {
831	<	try {
832	<	lock.lock();
833	<	c.await();
834	<	lock.unlock();
835	<	}
836	<	catch(InterruptedException e) {
837	<	threadUnexpectedException();
838	<	}
839	<	}
840	<	});
841	<
842	<	Thread t2 = new Thread(new Runnable() {
843	<	public void run() {
844	<	try {
845	<	lock.lock();
846	<	c.await();
847	<	lock.unlock();
848	<	}
849	<	catch(InterruptedException e) {
850	<	threadUnexpectedException();
851	<	}
852	<	}
853	<	});
854	<
855	<	try {
856	<	t1.start();
857	<	t2.start();
858	<	Thread.sleep(SHORT_DELAY_MS);
859	<	lock.lock();
860	<	c.signalAll();
861	<	lock.unlock();
862	<	t1.join(SHORT_DELAY_MS);
863	<	t2.join(SHORT_DELAY_MS);
864	<	assertFalse(t1.isAlive());
865	<	assertFalse(t2.isAlive());
866	<	}
867	<	catch (Exception ex) {
868	<	unexpectedException();
869	<	}
829	>	Thread t1 = newStartedThread(new CheckedRunnable() {
830	>	public void realRun() throws InterruptedException {
831	>	lock.lock();
832	>	c.await();
833	>	lock.unlock();
834	>	}});
835	>
836	>	Thread t2 = newStartedThread(new CheckedRunnable() {
837	>	public void realRun() throws InterruptedException {
838	>	lock.lock();
839	>	c.await();
840	>	lock.unlock();
841	>	}});
842	>
843	>	delay(SHORT_DELAY_MS);
844	>	lock.lock();
845	>	c.signalAll();
846	>	lock.unlock();
847	>	awaitTermination(t1);
848	>	awaitTermination(t2);
849	>	}
850	>
851	>	/**
852	>	* await after multiple reentrant locking preserves lock count
853	>	*/
854	>	public void testAwaitLockCount() throws InterruptedException {
855	>	final ReentrantLock lock = new ReentrantLock();
856	>	final Condition c = lock.newCondition();
857	>	Thread t1 = newStartedThread(new CheckedRunnable() {
858	>	public void realRun() throws InterruptedException {
859	>	lock.lock();
860	>	assertEquals(1, lock.getHoldCount());
861	>	c.await();
862	>	assertEquals(1, lock.getHoldCount());
863	>	lock.unlock();
864	>	}});
865	>
866	>	Thread t2 = newStartedThread(new CheckedRunnable() {
867	>	public void realRun() throws InterruptedException {
868	>	lock.lock();
869	>	lock.lock();
870	>	assertEquals(2, lock.getHoldCount());
871	>	c.await();
872	>	assertEquals(2, lock.getHoldCount());
873	>	lock.unlock();
874	>	lock.unlock();
875	>	}});
876	>
877	>	delay(SHORT_DELAY_MS);
878	>	lock.lock();
879	>	c.signalAll();
880	>	lock.unlock();
881	>	awaitTermination(t1);
882	>	awaitTermination(t2);
883		}
884
885		/**
886		* A serialized lock deserializes as unlocked
887		*/
888	<	public void testSerialization() {
888	>	public void testSerialization() throws Exception {
889		ReentrantLock l = new ReentrantLock();
890		l.lock();
891		l.unlock();
892
893	<	try {
894	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
895	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
896	<	out.writeObject(l);
897	<	out.close();
898	<
899	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
900	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
901	<	ReentrantLock r = (ReentrantLock) in.readObject();
902	<	r.lock();
903	<	r.unlock();
904	<	} catch(Exception e){
905	<	e.printStackTrace();
906	<	unexpectedException();
907	<	}
893	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
894	>	ObjectOutputStream out =
895	>	new ObjectOutputStream(new BufferedOutputStream(bout));
896	>	out.writeObject(l);
897	>	out.close();
898	>
899	>	ByteArrayInputStream bin =
900	>	new ByteArrayInputStream(bout.toByteArray());
901	>	ObjectInputStream in =
902	>	new ObjectInputStream(new BufferedInputStream(bin));
903	>	ReentrantLock r = (ReentrantLock) in.readObject();
904	>	r.lock();
905	>	r.unlock();
906	>	}
907	>
908	>	/**
909	>	* toString indicates current lock state
910	>	*/
911	>	public void testToString() {
912	>	ReentrantLock lock = new ReentrantLock();
913	>	String us = lock.toString();
914	>	assertTrue(us.indexOf("Unlocked") >= 0);
915	>	lock.lock();
916	>	String ls = lock.toString();
917	>	assertTrue(ls.indexOf("Locked") >= 0);
918		}
919
920		}

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