ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.16 by dl, Wed Jan 7 01:02:17 2004 UTC vs.
Revision 1.43 by jsr166, Sat Oct 9 19:30:35 2010 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.io.*;
14		import java.util.*;
15
16		public class ReentrantReadWriteLockTest 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(ReentrantReadWriteLockTest.class);
21	>	return new TestSuite(ReentrantReadWriteLockTest.class);
22		}
23
24		/**
25		* A runnable calling lockInterruptibly
26		*/
27	<	class InterruptibleLockRunnable implements Runnable {
27	>	class InterruptibleLockRunnable extends CheckedRunnable {
28		final ReentrantReadWriteLock lock;
29		InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; }
30	<	public void run() {
31	<	try {
31	<	lock.writeLock().lockInterruptibly();
32	<	} catch(InterruptedException success){}
30	>	public void realRun() throws InterruptedException {
31	>	lock.writeLock().lockInterruptibly();
32		}
33		}
34
#	Line 38 | Line 37 | public class ReentrantReadWriteLockTest
37		* A runnable calling lockInterruptibly that expects to be
38		* interrupted
39		*/
40	<	class InterruptedLockRunnable implements Runnable {
40	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
41		final ReentrantReadWriteLock lock;
42		InterruptedLockRunnable(ReentrantReadWriteLock l) { lock = l; }
43	<	public void run() {
44	<	try {
46	<	lock.writeLock().lockInterruptibly();
47	<	threadShouldThrow();
48	<	} catch(InterruptedException success){}
43	>	public void realRun() throws InterruptedException {
44	>	lock.writeLock().lockInterruptibly();
45		}
46		}
47
#	Line 54 | Line 50 | public class ReentrantReadWriteLockTest
50		*/
51		static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock {
52		PublicReentrantReadWriteLock() { 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		* Constructor sets given fairness, and is in unlocked state
63		*/
64	<	public void testConstructor() {
65	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
64	>	public void testConstructor() {
65	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
66		assertFalse(rl.isFair());
67		assertFalse(rl.isWriteLocked());
68		assertEquals(0, rl.getReadLockCount());
69	<	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
69	>	ReentrantReadWriteLock r2 = new ReentrantReadWriteLock(true);
70		assertTrue(r2.isFair());
71		assertFalse(r2.isWriteLocked());
72		assertEquals(0, r2.getReadLockCount());
73	+	ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false);
74	+	assertFalse(r3.isFair());
75	+	assertFalse(r3.isWriteLocked());
76	+	assertEquals(0, r3.getReadLockCount());
77		}
78
79		/**
80		* write-locking and read-locking an unlocked lock succeed
81		*/
82	<	public void testLock() {
83	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
82	>	public void testLock() {
83	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
84		rl.writeLock().lock();
85		assertTrue(rl.isWriteLocked());
86		assertTrue(rl.isWriteLockedByCurrentThread());
87	+	assertTrue(rl.writeLock().isHeldByCurrentThread());
88		assertEquals(0, rl.getReadLockCount());
89		rl.writeLock().unlock();
90		assertFalse(rl.isWriteLocked());
91		assertFalse(rl.isWriteLockedByCurrentThread());
92	+	assertFalse(rl.writeLock().isHeldByCurrentThread());
93		assertEquals(0, rl.getReadLockCount());
94		rl.readLock().lock();
95		assertFalse(rl.isWriteLocked());
#	Line 103 | Line 105 | public class ReentrantReadWriteLockTest
105		/**
106		* locking an unlocked fair lock succeeds
107		*/
108	<	public void testFairLock() {
109	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
108	>	public void testFairLock() {
109	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
110		rl.writeLock().lock();
111		assertTrue(rl.isWriteLocked());
112		assertTrue(rl.isWriteLockedByCurrentThread());
113	+	assertTrue(rl.writeLock().isHeldByCurrentThread());
114		assertEquals(0, rl.getReadLockCount());
115		rl.writeLock().unlock();
116		assertFalse(rl.isWriteLocked());
117		assertFalse(rl.isWriteLockedByCurrentThread());
118	+	assertFalse(rl.writeLock().isHeldByCurrentThread());
119		assertEquals(0, rl.getReadLockCount());
120		rl.readLock().lock();
121		assertFalse(rl.isWriteLocked());
#	Line 126 | Line 130 | public class ReentrantReadWriteLockTest
130		/**
131		* getWriteHoldCount returns number of recursive holds
132		*/
133	+	public void testGetWriteHoldCount() {
134	+	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
135	+	for (int i = 1; i <= SIZE; i++) {
136	+	lock.writeLock().lock();
137	+	assertEquals(i,lock.getWriteHoldCount());
138	+	}
139	+	for (int i = SIZE; i > 0; i--) {
140	+	lock.writeLock().unlock();
141	+	assertEquals(i-1,lock.getWriteHoldCount());
142	+	}
143	+	}
144	+
145	+	/**
146	+	* WriteLock.getHoldCount returns number of recursive holds
147	+	*/
148		public void testGetHoldCount() {
149	<	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
150	<	for(int i = 1; i <= SIZE; i++) {
151	<	lock.writeLock().lock();
152	<	assertEquals(i,lock.getWriteHoldCount());
153	<	}
154	<	for(int i = SIZE; i > 0; i--) {
155	<	lock.writeLock().unlock();
156	<	assertEquals(i-1,lock.getWriteHoldCount());
157	<	}
149	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
150	>	for (int i = 1; i <= SIZE; i++) {
151	>	lock.writeLock().lock();
152	>	assertEquals(i,lock.writeLock().getHoldCount());
153	>	}
154	>	for (int i = SIZE; i > 0; i--) {
155	>	lock.writeLock().unlock();
156	>	assertEquals(i-1,lock.writeLock().getHoldCount());
157	>	}
158		}
159	<
159	>
160	>	/**
161	>	* getReadHoldCount returns number of recursive holds
162	>	*/
163	>	public void testGetReadHoldCount() {
164	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
165	>	for (int i = 1; i <= SIZE; i++) {
166	>	lock.readLock().lock();
167	>	assertEquals(i,lock.getReadHoldCount());
168	>	}
169	>	for (int i = SIZE; i > 0; i--) {
170	>	lock.readLock().unlock();
171	>	assertEquals(i-1,lock.getReadHoldCount());
172	>	}
173	>	}
174	>
175
176		/**
177		* write-unlocking an unlocked lock throws IllegalMonitorStateException
178		*/
179	<	public void testUnlock_IllegalMonitorStateException() {
180	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
181	<	try {
182	<	rl.writeLock().unlock();
183	<	shouldThrow();
184	<	} catch(IllegalMonitorStateException success){}
179	>	public void testUnlock_IllegalMonitorStateException() {
180	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
181	>	try {
182	>	rl.writeLock().unlock();
183	>	shouldThrow();
184	>	} catch (IllegalMonitorStateException success) {}
185		}
186
187
188		/**
189		* write-lockInterruptibly is interruptible
190		*/
191	<	public void testWriteLockInterruptibly_Interrupted() {
192	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
193	<	Thread t = new Thread(new Runnable() {
194	<	public void run() {
195	<	try {
196	<	lock.writeLock().lockInterruptibly();
197	<	lock.writeLock().unlock();
198	<	lock.writeLock().lockInterruptibly();
199	<	lock.writeLock().unlock();
200	<	} catch(InterruptedException success){}
201	<	}
202	<	});
203	<	try {
204	<	lock.writeLock().lock();
205	<	t.start();
206	<	t.interrupt();
207	<	lock.writeLock().unlock();
208	<	t.join();
175	<	} catch(Exception e){
176	<	unexpectedException();
177	<	}
178	<	}
191	>	public void testWriteLockInterruptibly_Interrupted() throws Exception {
192	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
193	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
194	>	public void realRun() throws InterruptedException {
195	>	lock.writeLock().lockInterruptibly();
196	>	lock.writeLock().unlock();
197	>	lock.writeLock().lockInterruptibly();
198	>	lock.writeLock().unlock();
199	>	}});
200	>
201	>	lock.writeLock().lock();
202	>	t.start();
203	>	Thread.sleep(SHORT_DELAY_MS);
204	>	t.interrupt();
205	>	Thread.sleep(SHORT_DELAY_MS);
206	>	lock.writeLock().unlock();
207	>	t.join();
208	>	}
209
210		/**
211		* timed write-tryLock is interruptible
212		*/
213	<	public void testWriteTryLock_Interrupted() {
214	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
215	<	lock.writeLock().lock();
216	<	Thread t = new Thread(new Runnable() {
217	<	public void run() {
218	<	try {
219	<	lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
220	<	threadShouldThrow();
221	<	} catch(InterruptedException success){}
222	<	}
223	<	});
224	<	try {
225	<	t.start();
196	<	t.interrupt();
197	<	lock.writeLock().unlock();
198	<	t.join();
199	<	} catch(Exception e){
200	<	unexpectedException();
201	<	}
213	>	public void testWriteTryLock_Interrupted() throws InterruptedException {
214	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
215	>	lock.writeLock().lock();
216	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
217	>	public void realRun() throws InterruptedException {
218	>	lock.writeLock().tryLock(SMALL_DELAY_MS, MILLISECONDS);
219	>	}});
220	>
221	>	t.start();
222	>	Thread.sleep(SHORT_DELAY_MS);
223	>	t.interrupt();
224	>	lock.writeLock().unlock();
225	>	t.join();
226		}
227
228		/**
229		* read-lockInterruptibly is interruptible
230		*/
231	<	public void testReadLockInterruptibly_Interrupted() {
232	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
233	<	lock.writeLock().lock();
234	<	Thread t = new Thread(new Runnable() {
235	<	public void run() {
236	<	try {
237	<	lock.readLock().lockInterruptibly();
238	<	} catch(InterruptedException success){}
239	<	}
240	<	});
241	<	try {
242	<	t.start();
243	<	t.interrupt();
244	<	lock.writeLock().unlock();
245	<	t.join();
222	<	} catch(Exception e){
223	<	unexpectedException();
224	<	}
225	<	}
231	>	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
232	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
233	>	lock.writeLock().lock();
234	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
235	>	public void realRun() throws InterruptedException {
236	>	lock.readLock().lockInterruptibly();
237	>	}});
238	>
239	>	t.start();
240	>	Thread.sleep(SHORT_DELAY_MS);
241	>	t.interrupt();
242	>	Thread.sleep(SHORT_DELAY_MS);
243	>	lock.writeLock().unlock();
244	>	t.join();
245	>	}
246
247		/**
248		* timed read-tryLock is interruptible
249		*/
250	<	public void testReadTryLock_Interrupted() {
251	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
252	<	lock.writeLock().lock();
253	<	Thread t = new Thread(new Runnable() {
254	<	public void run() {
255	<	try {
256	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
257	<	threadShouldThrow();
258	<	} catch(InterruptedException success){}
259	<	}
260	<	});
261	<	try {
242	<	t.start();
243	<	t.interrupt();
244	<	t.join();
245	<	} catch(Exception e){
246	<	unexpectedException();
247	<	}
250	>	public void testReadTryLock_Interrupted() throws InterruptedException {
251	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
252	>	lock.writeLock().lock();
253	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
254	>	public void realRun() throws InterruptedException {
255	>	lock.readLock().tryLock(LONG_DELAY_MS, MILLISECONDS);
256	>	}});
257	>
258	>	t.start();
259	>	Thread.sleep(SHORT_DELAY_MS);
260	>	t.interrupt();
261	>	t.join();
262		}
263
264	<
264	>
265		/**
266		* write-tryLock fails if locked
267		*/
268	<	public void testWriteTryLockWhenLocked() {
269	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
270	<	lock.writeLock().lock();
271	<	Thread t = new Thread(new Runnable() {
272	<	public void run() {
273	<	threadAssertFalse(lock.writeLock().tryLock());
274	<	}
275	<	});
276	<	try {
277	<	t.start();
278	<	t.join();
279	<	lock.writeLock().unlock();
266	<	} catch(Exception e){
267	<	unexpectedException();
268	<	}
269	<	}
268	>	public void testWriteTryLockWhenLocked() throws InterruptedException {
269	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
270	>	lock.writeLock().lock();
271	>	Thread t = new Thread(new CheckedRunnable() {
272	>	public void realRun() {
273	>	assertFalse(lock.writeLock().tryLock());
274	>	}});
275	>
276	>	t.start();
277	>	t.join();
278	>	lock.writeLock().unlock();
279	>	}
280
281		/**
282		* read-tryLock fails if locked
283		*/
284	<	public void testReadTryLockWhenLocked() {
285	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
286	<	lock.writeLock().lock();
287	<	Thread t = new Thread(new Runnable() {
288	<	public void run() {
289	<	threadAssertFalse(lock.readLock().tryLock());
290	<	}
291	<	});
292	<	try {
293	<	t.start();
294	<	t.join();
295	<	lock.writeLock().unlock();
286	<	} catch(Exception e){
287	<	unexpectedException();
288	<	}
289	<	}
284	>	public void testReadTryLockWhenLocked() throws InterruptedException {
285	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
286	>	lock.writeLock().lock();
287	>	Thread t = new Thread(new CheckedRunnable() {
288	>	public void realRun() {
289	>	assertFalse(lock.readLock().tryLock());
290	>	}});
291	>
292	>	t.start();
293	>	t.join();
294	>	lock.writeLock().unlock();
295	>	}
296
297		/**
298		* Multiple threads can hold a read lock when not write-locked
299		*/
300	<	public void testMultipleReadLocks() {
301	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
302	<	lock.readLock().lock();
303	<	Thread t = new Thread(new Runnable() {
304	<	public void run() {
305	<	threadAssertTrue(lock.readLock().tryLock());
306	<	lock.readLock().unlock();
307	<	}
308	<	});
309	<	try {
310	<	t.start();
311	<	t.join();
312	<	lock.readLock().unlock();
307	<	} catch(Exception e){
308	<	unexpectedException();
309	<	}
310	<	}
300	>	public void testMultipleReadLocks() throws InterruptedException {
301	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
302	>	lock.readLock().lock();
303	>	Thread t = new Thread(new CheckedRunnable() {
304	>	public void realRun() {
305	>	assertTrue(lock.readLock().tryLock());
306	>	lock.readLock().unlock();
307	>	}});
308	>
309	>	t.start();
310	>	t.join();
311	>	lock.readLock().unlock();
312	>	}
313
314		/**
315		* A writelock succeeds after reading threads unlock
316		*/
317	<	public void testWriteAfterMultipleReadLocks() {
318	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
319	<	lock.readLock().lock();
320	<	Thread t1 = new Thread(new Runnable() {
321	<	public void run() {
322	<	lock.readLock().lock();
323	<	lock.readLock().unlock();
324	<	}
325	<	});
326	<	Thread t2 = new Thread(new Runnable() {
327	<	public void run() {
328	<	lock.writeLock().lock();
329	<	lock.writeLock().unlock();
330	<	}
331	<	});
332	<
333	<	try {
334	<	t1.start();
335	<	t2.start();
336	<	Thread.sleep(SHORT_DELAY_MS);
337	<	lock.readLock().unlock();
338	<	t1.join(MEDIUM_DELAY_MS);
339	<	t2.join(MEDIUM_DELAY_MS);
338	<	assertTrue(!t1.isAlive());
339	<	assertTrue(!t2.isAlive());
340	<
341	<	} catch(Exception e){
342	<	unexpectedException();
343	<	}
344	<	}
317	>	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
318	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
319	>	lock.readLock().lock();
320	>	Thread t1 = new Thread(new CheckedRunnable() {
321	>	public void realRun() {
322	>	lock.readLock().lock();
323	>	lock.readLock().unlock();
324	>	}});
325	>	Thread t2 = new Thread(new CheckedRunnable() {
326	>	public void realRun() {
327	>	lock.writeLock().lock();
328	>	lock.writeLock().unlock();
329	>	}});
330	>
331	>	t1.start();
332	>	t2.start();
333	>	Thread.sleep(SHORT_DELAY_MS);
334	>	lock.readLock().unlock();
335	>	t1.join(MEDIUM_DELAY_MS);
336	>	t2.join(MEDIUM_DELAY_MS);
337	>	assertTrue(!t1.isAlive());
338	>	assertTrue(!t2.isAlive());
339	>	}
340
341		/**
342		* Readlocks succeed after a writing thread unlocks
343		*/
344	<	public void testReadAfterWriteLock() {
345	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
346	<	lock.writeLock().lock();
347	<	Thread t1 = new Thread(new Runnable() {
348	<	public void run() {
349	<	lock.readLock().lock();
350	<	lock.readLock().unlock();
351	<	}
352	<	});
353	<	Thread t2 = new Thread(new Runnable() {
354	<	public void run() {
355	<	lock.readLock().lock();
356	<	lock.readLock().unlock();
357	<	}
358	<	});
359	<
360	<	try {
361	<	t1.start();
362	<	t2.start();
363	<	Thread.sleep(SHORT_DELAY_MS);
364	<	lock.writeLock().unlock();
365	<	t1.join(MEDIUM_DELAY_MS);
366	<	t2.join(MEDIUM_DELAY_MS);
367	<	assertTrue(!t1.isAlive());
368	<	assertTrue(!t2.isAlive());
369	<
370	<	} catch(Exception e){
371	<	unexpectedException();
372	<	}
373	<	}
344	>	public void testReadAfterWriteLock() throws InterruptedException {
345	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
346	>	lock.writeLock().lock();
347	>	Thread t1 = new Thread(new CheckedRunnable() {
348	>	public void realRun() {
349	>	lock.readLock().lock();
350	>	lock.readLock().unlock();
351	>	}});
352	>	Thread t2 = new Thread(new CheckedRunnable() {
353	>	public void realRun() {
354	>	lock.readLock().lock();
355	>	lock.readLock().unlock();
356	>	}});
357	>
358	>	t1.start();
359	>	t2.start();
360	>	Thread.sleep(SHORT_DELAY_MS);
361	>	lock.writeLock().unlock();
362	>	t1.join(MEDIUM_DELAY_MS);
363	>	t2.join(MEDIUM_DELAY_MS);
364	>	assertTrue(!t1.isAlive());
365	>	assertTrue(!t2.isAlive());
366	>	}
367	>
368	>	/**
369	>	* Read trylock succeeds if write locked by current thread
370	>	*/
371	>	public void testReadHoldingWriteLock() {
372	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
373	>	lock.writeLock().lock();
374	>	assertTrue(lock.readLock().tryLock());
375	>	lock.readLock().unlock();
376	>	lock.writeLock().unlock();
377	>	}
378	>
379	>	/**
380	>	* Read lock succeeds if write locked by current thread even if
381	>	* other threads are waiting for readlock
382	>	*/
383	>	public void testReadHoldingWriteLock2() throws InterruptedException {
384	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
385	>	lock.writeLock().lock();
386	>	Thread t1 = new Thread(new CheckedRunnable() {
387	>	public void realRun() {
388	>	lock.readLock().lock();
389	>	lock.readLock().unlock();
390	>	}});
391	>	Thread t2 = new Thread(new CheckedRunnable() {
392	>	public void realRun() {
393	>	lock.readLock().lock();
394	>	lock.readLock().unlock();
395	>	}});
396	>
397	>	t1.start();
398	>	t2.start();
399	>	lock.readLock().lock();
400	>	lock.readLock().unlock();
401	>	Thread.sleep(SHORT_DELAY_MS);
402	>	lock.readLock().lock();
403	>	lock.readLock().unlock();
404	>	lock.writeLock().unlock();
405	>	t1.join(MEDIUM_DELAY_MS);
406	>	t2.join(MEDIUM_DELAY_MS);
407	>	assertTrue(!t1.isAlive());
408	>	assertTrue(!t2.isAlive());
409	>	}
410	>
411	>	/**
412	>	* Read lock succeeds if write locked by current thread even if
413	>	* other threads are waiting for writelock
414	>	*/
415	>	public void testReadHoldingWriteLock3() throws InterruptedException {
416	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
417	>	lock.writeLock().lock();
418	>	Thread t1 = new Thread(new CheckedRunnable() {
419	>	public void realRun() {
420	>	lock.writeLock().lock();
421	>	lock.writeLock().unlock();
422	>	}});
423	>	Thread t2 = new Thread(new CheckedRunnable() {
424	>	public void realRun() {
425	>	lock.writeLock().lock();
426	>	lock.writeLock().unlock();
427	>	}});
428	>
429	>	t1.start();
430	>	t2.start();
431	>	lock.readLock().lock();
432	>	lock.readLock().unlock();
433	>	Thread.sleep(SHORT_DELAY_MS);
434	>	lock.readLock().lock();
435	>	lock.readLock().unlock();
436	>	lock.writeLock().unlock();
437	>	t1.join(MEDIUM_DELAY_MS);
438	>	t2.join(MEDIUM_DELAY_MS);
439	>	assertTrue(!t1.isAlive());
440	>	assertTrue(!t2.isAlive());
441	>	}
442	>
443	>
444	>	/**
445	>	* Write lock succeeds if write locked by current thread even if
446	>	* other threads are waiting for writelock
447	>	*/
448	>	public void testWriteHoldingWriteLock4() throws InterruptedException {
449	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
450	>	lock.writeLock().lock();
451	>	Thread t1 = new Thread(new CheckedRunnable() {
452	>	public void realRun() {
453	>	lock.writeLock().lock();
454	>	lock.writeLock().unlock();
455	>	}});
456	>	Thread t2 = new Thread(new CheckedRunnable() {
457	>	public void realRun() {
458	>	lock.writeLock().lock();
459	>	lock.writeLock().unlock();
460	>	}});
461	>
462	>	t1.start();
463	>	t2.start();
464	>	lock.writeLock().lock();
465	>	lock.writeLock().unlock();
466	>	Thread.sleep(SHORT_DELAY_MS);
467	>	lock.writeLock().lock();
468	>	lock.writeLock().unlock();
469	>	lock.writeLock().unlock();
470	>	t1.join(MEDIUM_DELAY_MS);
471	>	t2.join(MEDIUM_DELAY_MS);
472	>	assertTrue(!t1.isAlive());
473	>	assertTrue(!t2.isAlive());
474	>	}
475	>
476	>
477	>	/**
478	>	* Fair Read trylock succeeds if write locked by current thread
479	>	*/
480	>	public void testReadHoldingWriteLockFair() {
481	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
482	>	lock.writeLock().lock();
483	>	assertTrue(lock.readLock().tryLock());
484	>	lock.readLock().unlock();
485	>	lock.writeLock().unlock();
486	>	}
487	>
488	>	/**
489	>	* Fair Read lock succeeds if write locked by current thread even if
490	>	* other threads are waiting for readlock
491	>	*/
492	>	public void testReadHoldingWriteLockFair2() throws InterruptedException {
493	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
494	>	lock.writeLock().lock();
495	>	Thread t1 = new Thread(new CheckedRunnable() {
496	>	public void realRun() {
497	>	lock.readLock().lock();
498	>	lock.readLock().unlock();
499	>	}});
500	>	Thread t2 = new Thread(new CheckedRunnable() {
501	>	public void realRun() {
502	>	lock.readLock().lock();
503	>	lock.readLock().unlock();
504	>	}});
505	>
506	>	t1.start();
507	>	t2.start();
508	>	lock.readLock().lock();
509	>	lock.readLock().unlock();
510	>	Thread.sleep(SHORT_DELAY_MS);
511	>	lock.readLock().lock();
512	>	lock.readLock().unlock();
513	>	lock.writeLock().unlock();
514	>	t1.join(MEDIUM_DELAY_MS);
515	>	t2.join(MEDIUM_DELAY_MS);
516	>	assertTrue(!t1.isAlive());
517	>	assertTrue(!t2.isAlive());
518	>	}
519	>
520	>
521	>	/**
522	>	* Fair Read lock succeeds if write locked by current thread even if
523	>	* other threads are waiting for writelock
524	>	*/
525	>	public void testReadHoldingWriteLockFair3() throws InterruptedException {
526	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
527	>	lock.writeLock().lock();
528	>	Thread t1 = new Thread(new CheckedRunnable() {
529	>	public void realRun() {
530	>	lock.writeLock().lock();
531	>	lock.writeLock().unlock();
532	>	}});
533	>	Thread t2 = new Thread(new CheckedRunnable() {
534	>	public void realRun() {
535	>	lock.writeLock().lock();
536	>	lock.writeLock().unlock();
537	>	}});
538	>
539	>	t1.start();
540	>	t2.start();
541	>	lock.readLock().lock();
542	>	lock.readLock().unlock();
543	>	Thread.sleep(SHORT_DELAY_MS);
544	>	lock.readLock().lock();
545	>	lock.readLock().unlock();
546	>	lock.writeLock().unlock();
547	>	t1.join(MEDIUM_DELAY_MS);
548	>	t2.join(MEDIUM_DELAY_MS);
549	>	assertTrue(!t1.isAlive());
550	>	assertTrue(!t2.isAlive());
551	>	}
552	>
553	>
554	>	/**
555	>	* Fair Write lock succeeds if write locked by current thread even if
556	>	* other threads are waiting for writelock
557	>	*/
558	>	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
559	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
560	>	lock.writeLock().lock();
561	>	Thread t1 = new Thread(new CheckedRunnable() {
562	>	public void realRun() {
563	>	lock.writeLock().lock();
564	>	lock.writeLock().unlock();
565	>	}});
566	>	Thread t2 = new Thread(new CheckedRunnable() {
567	>	public void realRun() {
568	>	lock.writeLock().lock();
569	>	lock.writeLock().unlock();
570	>	}});
571	>
572	>	t1.start();
573	>	t2.start();
574	>	Thread.sleep(SHORT_DELAY_MS);
575	>	assertTrue(lock.isWriteLockedByCurrentThread());
576	>	assertEquals(1, lock.getWriteHoldCount());
577	>	lock.writeLock().lock();
578	>	assertEquals(2, lock.getWriteHoldCount());
579	>	lock.writeLock().unlock();
580	>	lock.writeLock().lock();
581	>	lock.writeLock().unlock();
582	>	lock.writeLock().unlock();
583	>	t1.join(MEDIUM_DELAY_MS);
584	>	t2.join(MEDIUM_DELAY_MS);
585	>	assertTrue(!t1.isAlive());
586	>	assertTrue(!t2.isAlive());
587	>	}
588
589
590		/**
591		* Read tryLock succeeds if readlocked but not writelocked
592		*/
593	<	public void testTryLockWhenReadLocked() {
594	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
595	<	lock.readLock().lock();
596	<	Thread t = new Thread(new Runnable() {
597	<	public void run() {
598	<	threadAssertTrue(lock.readLock().tryLock());
599	<	lock.readLock().unlock();
600	<	}
601	<	});
602	<	try {
603	<	t.start();
604	<	t.join();
605	<	lock.readLock().unlock();
606	<	} catch(Exception e){
398	<	unexpectedException();
399	<	}
400	<	}
593	>	public void testTryLockWhenReadLocked() throws InterruptedException {
594	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
595	>	lock.readLock().lock();
596	>	Thread t = new Thread(new CheckedRunnable() {
597	>	public void realRun() {
598	>	assertTrue(lock.readLock().tryLock());
599	>	lock.readLock().unlock();
600	>	}});
601	>
602	>	t.start();
603	>	t.join();
604	>	lock.readLock().unlock();
605	>	}
606	>
607
402	–
608
609		/**
610		* write tryLock fails when readlocked
611		*/
612	<	public void testWriteTryLockWhenReadLocked() {
613	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
614	<	lock.readLock().lock();
615	<	Thread t = new Thread(new Runnable() {
616	<	public void run() {
617	<	threadAssertFalse(lock.writeLock().tryLock());
618	<	}
619	<	});
620	<	try {
621	<	t.start();
622	<	t.join();
623	<	lock.readLock().unlock();
624	<	} catch(Exception e){
625	<	unexpectedException();
626	<	}
627	<	}
612	>	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
613	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
614	>	lock.readLock().lock();
615	>	Thread t = new Thread(new CheckedRunnable() {
616	>	public void realRun() {
617	>	assertFalse(lock.writeLock().tryLock());
618	>	}});
619	>
620	>	t.start();
621	>	t.join();
622	>	lock.readLock().unlock();
623	>	}
624	>
625	>
626	>	/**
627	>	* Fair Read tryLock succeeds if readlocked but not writelocked
628	>	*/
629	>	public void testTryLockWhenReadLockedFair() throws InterruptedException {
630	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
631	>	lock.readLock().lock();
632	>	Thread t = new Thread(new CheckedRunnable() {
633	>	public void realRun() {
634	>	assertTrue(lock.readLock().tryLock());
635	>	lock.readLock().unlock();
636	>	}});
637	>
638	>	t.start();
639	>	t.join();
640	>	lock.readLock().unlock();
641	>	}
642	>
643	>
644	>
645	>	/**
646	>	* Fair write tryLock fails when readlocked
647	>	*/
648	>	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
649	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
650	>	lock.readLock().lock();
651	>	Thread t = new Thread(new CheckedRunnable() {
652	>	public void realRun() {
653	>	assertFalse(lock.writeLock().tryLock());
654	>	}});
655	>
656	>	t.start();
657	>	t.join();
658	>	lock.readLock().unlock();
659	>	}
660	>
661
424	–
662
663		/**
664		* write timed tryLock times out if locked
665		*/
666	<	public void testWriteTryLock_Timeout() {
667	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
668	<	lock.writeLock().lock();
669	<	Thread t = new Thread(new Runnable() {
670	<	public void run() {
671	<	try {
672	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
673	<	} catch (Exception ex) {
674	<	threadUnexpectedException();
675	<	}
676	<	}
677	<	});
678	<	try {
442	<	t.start();
443	<	t.join();
444	<	lock.writeLock().unlock();
445	<	} catch(Exception e){
446	<	unexpectedException();
447	<	}
448	<	}
666	>	public void testWriteTryLock_Timeout() throws InterruptedException {
667	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
668	>	lock.writeLock().lock();
669	>	Thread t = new Thread(new CheckedRunnable() {
670	>	public void realRun() throws InterruptedException {
671	>	assertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
672	>	}});
673	>
674	>	t.start();
675	>	t.join();
676	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
677	>	lock.writeLock().unlock();
678	>	}
679
680		/**
681		* read timed tryLock times out if write-locked
682		*/
683	<	public void testReadTryLock_Timeout() {
684	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
685	<	lock.writeLock().lock();
686	<	Thread t = new Thread(new Runnable() {
687	<	public void run() {
688	<	try {
689	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
690	<	} catch (Exception ex) {
691	<	threadUnexpectedException();
692	<	}
693	<	}
694	<	});
695	<	try {
466	<	t.start();
467	<	t.join();
468	<	lock.writeLock().unlock();
469	<	} catch(Exception e){
470	<	unexpectedException();
471	<	}
472	<	}
683	>	public void testReadTryLock_Timeout() throws InterruptedException {
684	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
685	>	lock.writeLock().lock();
686	>	Thread t = new Thread(new CheckedRunnable() {
687	>	public void realRun() throws InterruptedException {
688	>	assertFalse(lock.readLock().tryLock(1, MILLISECONDS));
689	>	}});
690	>
691	>	t.start();
692	>	t.join();
693	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
694	>	lock.writeLock().unlock();
695	>	}
696
697
698		/**
699		* write lockInterruptibly succeeds if lock free else is interruptible
700		*/
701	<	public void testWriteLockInterruptibly() {
702	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
703	<	try {
704	<	lock.writeLock().lockInterruptibly();
705	<	} catch(Exception e) {
706	<	unexpectedException();
707	<	}
708	<	Thread t = new Thread(new Runnable() {
709	<	public void run() {
710	<	try {
711	<	lock.writeLock().lockInterruptibly();
712	<	threadShouldThrow();
713	<	}
714	<	catch(InterruptedException success) {
492	<	}
493	<	}
494	<	});
495	<	try {
496	<	t.start();
497	<	t.interrupt();
498	<	t.join();
499	<	lock.writeLock().unlock();
500	<	} catch(Exception e){
501	<	unexpectedException();
502	<	}
701	>	public void testWriteLockInterruptibly() throws InterruptedException {
702	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
703	>	lock.writeLock().lockInterruptibly();
704	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
705	>	public void realRun() throws InterruptedException {
706	>	lock.writeLock().lockInterruptibly();
707	>	}});
708	>
709	>	t.start();
710	>	Thread.sleep(SHORT_DELAY_MS);
711	>	t.interrupt();
712	>	Thread.sleep(SHORT_DELAY_MS);
713	>	t.join();
714	>	lock.writeLock().unlock();
715		}
716
717		/**
718	<	*  read lockInterruptibly succeeds if lock free else is interruptible
719	<	*/
720	<	public void testReadLockInterruptibly() {
721	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
722	<	try {
723	<	lock.writeLock().lockInterruptibly();
724	<	} catch(Exception e) {
725	<	unexpectedException();
726	<	}
727	<	Thread t = new Thread(new Runnable() {
728	<	public void run() {
729	<	try {
730	<	lock.readLock().lockInterruptibly();
731	<	threadShouldThrow();
732	<	}
521	<	catch(InterruptedException success) {
522	<	}
523	<	}
524	<	});
525	<	try {
526	<	t.start();
527	<	t.interrupt();
528	<	t.join();
529	<	lock.writeLock().unlock();
530	<	} catch(Exception e){
531	<	unexpectedException();
532	<	}
718	>	* read lockInterruptibly succeeds if lock free else is interruptible
719	>	*/
720	>	public void testReadLockInterruptibly() throws InterruptedException {
721	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
722	>	lock.writeLock().lockInterruptibly();
723	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
724	>	public void realRun() throws InterruptedException {
725	>	lock.readLock().lockInterruptibly();
726	>	}});
727	>
728	>	t.start();
729	>	Thread.sleep(SHORT_DELAY_MS);
730	>	t.interrupt();
731	>	t.join();
732	>	lock.writeLock().unlock();
733		}
734
735		/**
736		* Calling await without holding lock throws IllegalMonitorStateException
737		*/
738	<	public void testAwait_IllegalMonitor() {
739	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
738	>	public void testAwait_IllegalMonitor() throws InterruptedException {
739	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
740		final Condition c = lock.writeLock().newCondition();
741		try {
742		c.await();
743		shouldThrow();
744	<	}
545	<	catch (IllegalMonitorStateException success) {
546	<	}
547	<	catch (Exception ex) {
548	<	shouldThrow();
549	<	}
744	>	} catch (IllegalMonitorStateException success) {}
745		}
746
747		/**
748		* Calling signal without holding lock throws IllegalMonitorStateException
749		*/
750		public void testSignal_IllegalMonitor() {
751	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
751	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
752		final Condition c = lock.writeLock().newCondition();
753		try {
754		c.signal();
755		shouldThrow();
756	<	}
562	<	catch (IllegalMonitorStateException success) {
563	<	}
564	<	catch (Exception ex) {
565	<	unexpectedException();
566	<	}
756	>	} catch (IllegalMonitorStateException success) {}
757		}
758
759		/**
760		* awaitNanos without a signal times out
761		*/
762	<	public void testAwaitNanos_Timeout() {
763	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
762	>	public void testAwaitNanos_Timeout() throws InterruptedException {
763	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
764		final Condition c = lock.writeLock().newCondition();
765	<	try {
766	<	lock.writeLock().lock();
767	<	long t = c.awaitNanos(100);
768	<	assertTrue(t <= 0);
769	<	lock.writeLock().unlock();
580	<	}
581	<	catch (Exception ex) {
582	<	unexpectedException();
583	<	}
765	>
766	>	lock.writeLock().lock();
767	>	long t = c.awaitNanos(100);
768	>	assertTrue(t <= 0);
769	>	lock.writeLock().unlock();
770		}
771
772
773		/**
774	<	*  timed await without a signal times out
774	>	* timed await without a signal times out
775		*/
776	<	public void testAwait_Timeout() {
777	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
776	>	public void testAwait_Timeout() throws InterruptedException {
777	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
778		final Condition c = lock.writeLock().newCondition();
779	<	try {
780	<	lock.writeLock().lock();
781	<	assertFalse(c.await(10, TimeUnit.MILLISECONDS));
596	<	lock.writeLock().unlock();
597	<	}
598	<	catch (Exception ex) {
599	<	unexpectedException();
600	<	}
779	>	lock.writeLock().lock();
780	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
781	>	lock.writeLock().unlock();
782		}
783
784		/**
785		* awaitUntil without a signal times out
786		*/
787	<	public void testAwaitUntil_Timeout() {
788	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
787	>	public void testAwaitUntil_Timeout() throws InterruptedException {
788	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
789		final Condition c = lock.writeLock().newCondition();
790	<	try {
791	<	lock.writeLock().lock();
792	<	java.util.Date d = new java.util.Date();
793	<	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
613	<	lock.writeLock().unlock();
614	<	}
615	<	catch (Exception ex) {
616	<	unexpectedException();
617	<	}
790	>	lock.writeLock().lock();
791	>	java.util.Date d = new java.util.Date();
792	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
793	>	lock.writeLock().unlock();
794		}
795
796		/**
797		* await returns when signalled
798		*/
799	<	public void testAwait() {
800	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
799	>	public void testAwait() throws InterruptedException {
800	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
801		final Condition c = lock.writeLock().newCondition();
802	<	Thread t = new Thread(new Runnable() {
803	<	public void run() {
804	<	try {
805	<	lock.writeLock().lock();
806	<	c.await();
807	<	lock.writeLock().unlock();
808	<	}
809	<	catch(InterruptedException e) {
810	<	threadUnexpectedException();
811	<	}
812	<	}
813	<	});
802	>	Thread t = new Thread(new CheckedRunnable() {
803	>	public void realRun() throws InterruptedException {
804	>	lock.writeLock().lock();
805	>	c.await();
806	>	lock.writeLock().unlock();
807	>	}});
808	>
809	>	t.start();
810	>	Thread.sleep(SHORT_DELAY_MS);
811	>	lock.writeLock().lock();
812	>	c.signal();
813	>	lock.writeLock().unlock();
814	>	t.join(SHORT_DELAY_MS);
815	>	assertFalse(t.isAlive());
816	>	}
817	>
818	>	/** A helper class for uninterruptible wait tests */
819	>	class UninterruptableThread extends Thread {
820	>	private Lock lock;
821	>	private Condition c;
822	>
823	>	public volatile boolean canAwake = false;
824	>	public volatile boolean interrupted = false;
825	>	public volatile boolean lockStarted = false;
826	>
827	>	public UninterruptableThread(Lock lock, Condition c) {
828	>	this.lock = lock;
829	>	this.c = c;
830	>	}
831	>
832	>	public synchronized void run() {
833	>	lock.lock();
834	>	lockStarted = true;
835	>
836	>	while (!canAwake) {
837	>	c.awaitUninterruptibly();
838	>	}
839
840	<	try {
841	<	t.start();
641	<	Thread.sleep(SHORT_DELAY_MS);
642	<	lock.writeLock().lock();
643	<	c.signal();
644	<	lock.writeLock().unlock();
645	<	t.join(SHORT_DELAY_MS);
646	<	assertFalse(t.isAlive());
647	<	}
648	<	catch (Exception ex) {
649	<	unexpectedException();
840	>	interrupted = isInterrupted();
841	>	lock.unlock();
842		}
843		}
844
845		/**
846		* awaitUninterruptibly doesn't abort on interrupt
847		*/
848	<	public void testAwaitUninterruptibly() {
849	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
848	>	public void testAwaitUninterruptibly() throws InterruptedException {
849	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
850		final Condition c = lock.writeLock().newCondition();
851	<	Thread t = new Thread(new Runnable() {
852	<	public void run() {
853	<	lock.writeLock().lock();
662	<	c.awaitUninterruptibly();
663	<	lock.writeLock().unlock();
664	<	}
665	<	});
851	>	UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
852	>
853	>	thread.start();
854
855	+	while (!thread.lockStarted) {
856	+	Thread.sleep(100);
857	+	}
858	+
859	+	lock.writeLock().lock();
860		try {
861	<	t.start();
862	<	Thread.sleep(SHORT_DELAY_MS);
670	<	t.interrupt();
671	<	lock.writeLock().lock();
861	>	thread.interrupt();
862	>	thread.canAwake = true;
863		c.signal();
864	+	} finally {
865		lock.writeLock().unlock();
674	–	assert(t.isInterrupted());
675	–	t.join(SHORT_DELAY_MS);
676	–	assertFalse(t.isAlive());
677	–	}
678	–	catch (Exception ex) {
679	–	unexpectedException();
866		}
867	+
868	+	thread.join();
869	+	assertTrue(thread.interrupted);
870	+	assertFalse(thread.isAlive());
871		}
872
873		/**
874		* await is interruptible
875		*/
876	<	public void testAwait_Interrupt() {
877	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
876	>	public void testAwait_Interrupt() throws InterruptedException {
877	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
878		final Condition c = lock.writeLock().newCondition();
879	<	Thread t = new Thread(new Runnable() {
880	<	public void run() {
881	<	try {
882	<	lock.writeLock().lock();
883	<	c.await();
884	<	lock.writeLock().unlock();
885	<	threadShouldThrow();
886	<	}
887	<	catch(InterruptedException success) {
888	<	}
889	<	}
890	<	});
701	<
702	<	try {
703	<	t.start();
704	<	Thread.sleep(SHORT_DELAY_MS);
705	<	t.interrupt();
706	<	t.join(SHORT_DELAY_MS);
707	<	assertFalse(t.isAlive());
708	<	}
709	<	catch (Exception ex) {
710	<	unexpectedException();
711	<	}
879	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
880	>	public void realRun() throws InterruptedException {
881	>	lock.writeLock().lock();
882	>	c.await();
883	>	lock.writeLock().unlock();
884	>	}});
885	>
886	>	t.start();
887	>	Thread.sleep(SHORT_DELAY_MS);
888	>	t.interrupt();
889	>	t.join(SHORT_DELAY_MS);
890	>	assertFalse(t.isAlive());
891		}
892
893		/**
894		* awaitNanos is interruptible
895		*/
896	<	public void testAwaitNanos_Interrupt() {
897	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
896	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
897	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
898		final Condition c = lock.writeLock().newCondition();
899	<	Thread t = new Thread(new Runnable() {
900	<	public void run() {
901	<	try {
902	<	lock.writeLock().lock();
903	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
904	<	lock.writeLock().unlock();
905	<	threadShouldThrow();
906	<	}
907	<	catch(InterruptedException success) {
908	<	}
909	<	}
910	<	});
732	<
733	<	try {
734	<	t.start();
735	<	Thread.sleep(SHORT_DELAY_MS);
736	<	t.interrupt();
737	<	t.join(SHORT_DELAY_MS);
738	<	assertFalse(t.isAlive());
739	<	}
740	<	catch (Exception ex) {
741	<	unexpectedException();
742	<	}
899	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
900	>	public void realRun() throws InterruptedException {
901	>	lock.writeLock().lock();
902	>	c.awaitNanos(MILLISECONDS.toNanos(LONG_DELAY_MS));
903	>	lock.writeLock().unlock();
904	>	}});
905	>
906	>	t.start();
907	>	Thread.sleep(SHORT_DELAY_MS);
908	>	t.interrupt();
909	>	t.join(SHORT_DELAY_MS);
910	>	assertFalse(t.isAlive());
911		}
912
913		/**
914		* awaitUntil is interruptible
915		*/
916	<	public void testAwaitUntil_Interrupt() {
917	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
916	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
917	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
918		final Condition c = lock.writeLock().newCondition();
919	<	Thread t = new Thread(new Runnable() {
920	<	public void run() {
921	<	try {
922	<	lock.writeLock().lock();
923	<	java.util.Date d = new java.util.Date();
924	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
925	<	lock.writeLock().unlock();
926	<	threadShouldThrow();
927	<	}
928	<	catch(InterruptedException success) {
929	<	}
930	<	}
931	<	});
764	<
765	<	try {
766	<	t.start();
767	<	Thread.sleep(SHORT_DELAY_MS);
768	<	t.interrupt();
769	<	t.join(SHORT_DELAY_MS);
770	<	assertFalse(t.isAlive());
771	<	}
772	<	catch (Exception ex) {
773	<	unexpectedException();
774	<	}
919	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
920	>	public void realRun() throws InterruptedException {
921	>	lock.writeLock().lock();
922	>	java.util.Date d = new java.util.Date();
923	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
924	>	lock.writeLock().unlock();
925	>	}});
926	>
927	>	t.start();
928	>	Thread.sleep(SHORT_DELAY_MS);
929	>	t.interrupt();
930	>	t.join(SHORT_DELAY_MS);
931	>	assertFalse(t.isAlive());
932		}
933
934		/**
935		* signalAll wakes up all threads
936		*/
937	<	public void testSignalAll() {
938	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
937	>	public void testSignalAll() throws InterruptedException {
938	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
939		final Condition c = lock.writeLock().newCondition();
940	<	Thread t1 = new Thread(new Runnable() {
941	<	public void run() {
942	<	try {
943	<	lock.writeLock().lock();
944	<	c.await();
945	<	lock.writeLock().unlock();
946	<	}
947	<	catch(InterruptedException e) {
948	<	threadUnexpectedException();
949	<	}
950	<	}
951	<	});
952	<
953	<	Thread t2 = new Thread(new Runnable() {
954	<	public void run() {
955	<	try {
956	<	lock.writeLock().lock();
957	<	c.await();
958	<	lock.writeLock().unlock();
959	<	}
960	<	catch(InterruptedException e) {
961	<	threadUnexpectedException();
962	<	}
963	<	}
807	<	});
808	<
809	<	try {
810	<	t1.start();
811	<	t2.start();
812	<	Thread.sleep(SHORT_DELAY_MS);
813	<	lock.writeLock().lock();
814	<	c.signalAll();
815	<	lock.writeLock().unlock();
816	<	t1.join(SHORT_DELAY_MS);
817	<	t2.join(SHORT_DELAY_MS);
818	<	assertFalse(t1.isAlive());
819	<	assertFalse(t2.isAlive());
820	<	}
821	<	catch (Exception ex) {
822	<	unexpectedException();
823	<	}
940	>	Thread t1 = new Thread(new CheckedRunnable() {
941	>	public void realRun() throws InterruptedException {
942	>	lock.writeLock().lock();
943	>	c.await();
944	>	lock.writeLock().unlock();
945	>	}});
946	>
947	>	Thread t2 = new Thread(new CheckedRunnable() {
948	>	public void realRun() throws InterruptedException {
949	>	lock.writeLock().lock();
950	>	c.await();
951	>	lock.writeLock().unlock();
952	>	}});
953	>
954	>	t1.start();
955	>	t2.start();
956	>	Thread.sleep(SHORT_DELAY_MS);
957	>	lock.writeLock().lock();
958	>	c.signalAll();
959	>	lock.writeLock().unlock();
960	>	t1.join(SHORT_DELAY_MS);
961	>	t2.join(SHORT_DELAY_MS);
962	>	assertFalse(t1.isAlive());
963	>	assertFalse(t2.isAlive());
964		}
965
966		/**
967		* A serialized lock deserializes as unlocked
968		*/
969	<	public void testSerialization() {
969	>	public void testSerialization() throws Exception {
970		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
971		l.readLock().lock();
972		l.readLock().unlock();
973
974	<	try {
975	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
976	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
977	<	out.writeObject(l);
978	<	out.close();
979	<
980	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
981	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
982	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
983	<	r.readLock().lock();
844	<	r.readLock().unlock();
845	<	} catch(Exception e){
846	<	e.printStackTrace();
847	<	unexpectedException();
848	<	}
974	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
975	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
976	>	out.writeObject(l);
977	>	out.close();
978	>
979	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
980	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
981	>	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
982	>	r.readLock().lock();
983	>	r.readLock().unlock();
984		}
985
986		/**
987		* hasQueuedThreads reports whether there are waiting threads
988		*/
989	<	public void testhasQueuedThreads() {
990	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
989	>	public void testhasQueuedThreads() throws InterruptedException {
990	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
991		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
992		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
993	+	assertFalse(lock.hasQueuedThreads());
994	+	lock.writeLock().lock();
995	+	t1.start();
996	+	Thread.sleep(SHORT_DELAY_MS);
997	+	assertTrue(lock.hasQueuedThreads());
998	+	t2.start();
999	+	Thread.sleep(SHORT_DELAY_MS);
1000	+	assertTrue(lock.hasQueuedThreads());
1001	+	t1.interrupt();
1002	+	Thread.sleep(SHORT_DELAY_MS);
1003	+	assertTrue(lock.hasQueuedThreads());
1004	+	lock.writeLock().unlock();
1005	+	Thread.sleep(SHORT_DELAY_MS);
1006	+	assertFalse(lock.hasQueuedThreads());
1007	+	t1.join();
1008	+	t2.join();
1009	+	}
1010	+
1011	+	/**
1012	+	* hasQueuedThread(null) throws NPE
1013	+	*/
1014	+	public void testHasQueuedThreadNPE() {
1015	+	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1016		try {
1017	<	assertFalse(lock.hasQueuedThreads());
1018	<	lock.writeLock().lock();
1019	<	t1.start();
1020	<	Thread.sleep(SHORT_DELAY_MS);
1021	<	assertTrue(lock.hasQueuedThreads());
1022	<	t2.start();
1023	<	Thread.sleep(SHORT_DELAY_MS);
1024	<	assertTrue(lock.hasQueuedThreads());
1025	<	t1.interrupt();
1026	<	Thread.sleep(SHORT_DELAY_MS);
1027	<	assertTrue(lock.hasQueuedThreads());
1028	<	lock.writeLock().unlock();
1029	<	Thread.sleep(SHORT_DELAY_MS);
1030	<	assertFalse(lock.hasQueuedThreads());
1031	<	t1.join();
1032	<	t2.join();
1033	<	} catch(Exception e){
1034	<	unexpectedException();
1035	<	}
1036	<	}
1017	>	sync.hasQueuedThread(null);
1018	>	shouldThrow();
1019	>	} catch (NullPointerException success) {}
1020	>	}
1021	>
1022	>	/**
1023	>	* hasQueuedThread reports whether a thread is queued.
1024	>	*/
1025	>	public void testHasQueuedThread() throws InterruptedException {
1026	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1027	>	Thread t1 = new Thread(new InterruptedLockRunnable(sync));
1028	>	Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
1029	>	assertFalse(sync.hasQueuedThread(t1));
1030	>	assertFalse(sync.hasQueuedThread(t2));
1031	>	sync.writeLock().lock();
1032	>	t1.start();
1033	>	Thread.sleep(SHORT_DELAY_MS);
1034	>	assertTrue(sync.hasQueuedThread(t1));
1035	>	t2.start();
1036	>	Thread.sleep(SHORT_DELAY_MS);
1037	>	assertTrue(sync.hasQueuedThread(t1));
1038	>	assertTrue(sync.hasQueuedThread(t2));
1039	>	t1.interrupt();
1040	>	Thread.sleep(SHORT_DELAY_MS);
1041	>	assertFalse(sync.hasQueuedThread(t1));
1042	>	assertTrue(sync.hasQueuedThread(t2));
1043	>	sync.writeLock().unlock();
1044	>	Thread.sleep(SHORT_DELAY_MS);
1045	>	assertFalse(sync.hasQueuedThread(t1));
1046	>	Thread.sleep(SHORT_DELAY_MS);
1047	>	assertFalse(sync.hasQueuedThread(t2));
1048	>	t1.join();
1049	>	t2.join();
1050	>	}
1051	>
1052
1053		/**
1054		* getQueueLength reports number of waiting threads
1055		*/
1056	<	public void testGetQueueLength() {
1057	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1056	>	public void testGetQueueLength() throws InterruptedException {
1057	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1058		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1059		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1060	<	try {
1061	<	assertEquals(0, lock.getQueueLength());
1062	<	lock.writeLock().lock();
1063	<	t1.start();
1064	<	Thread.sleep(SHORT_DELAY_MS);
1065	<	assertEquals(1, lock.getQueueLength());
1066	<	t2.start();
1067	<	Thread.sleep(SHORT_DELAY_MS);
1068	<	assertEquals(2, lock.getQueueLength());
1069	<	t1.interrupt();
1070	<	Thread.sleep(SHORT_DELAY_MS);
1071	<	assertEquals(1, lock.getQueueLength());
1072	<	lock.writeLock().unlock();
1073	<	Thread.sleep(SHORT_DELAY_MS);
1074	<	assertEquals(0, lock.getQueueLength());
1075	<	t1.join();
1076	<	t2.join();
904	<	} catch(Exception e){
905	<	unexpectedException();
906	<	}
907	<	}
1060	>	assertEquals(0, lock.getQueueLength());
1061	>	lock.writeLock().lock();
1062	>	t1.start();
1063	>	Thread.sleep(SHORT_DELAY_MS);
1064	>	assertEquals(1, lock.getQueueLength());
1065	>	t2.start();
1066	>	Thread.sleep(SHORT_DELAY_MS);
1067	>	assertEquals(2, lock.getQueueLength());
1068	>	t1.interrupt();
1069	>	Thread.sleep(SHORT_DELAY_MS);
1070	>	assertEquals(1, lock.getQueueLength());
1071	>	lock.writeLock().unlock();
1072	>	Thread.sleep(SHORT_DELAY_MS);
1073	>	assertEquals(0, lock.getQueueLength());
1074	>	t1.join();
1075	>	t2.join();
1076	>	}
1077
1078		/**
1079		* getQueuedThreads includes waiting threads
1080		*/
1081	<	public void testGetQueuedThreads() {
1082	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1081	>	public void testGetQueuedThreads() throws InterruptedException {
1082	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1083		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1084		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1085	<	try {
1086	<	assertTrue(lock.getQueuedThreads().isEmpty());
1087	<	lock.writeLock().lock();
1088	<	assertTrue(lock.getQueuedThreads().isEmpty());
1089	<	t1.start();
1090	<	Thread.sleep(SHORT_DELAY_MS);
1091	<	assertTrue(lock.getQueuedThreads().contains(t1));
1092	<	t2.start();
1093	<	Thread.sleep(SHORT_DELAY_MS);
1094	<	assertTrue(lock.getQueuedThreads().contains(t1));
1095	<	assertTrue(lock.getQueuedThreads().contains(t2));
1096	<	t1.interrupt();
1097	<	Thread.sleep(SHORT_DELAY_MS);
1098	<	assertFalse(lock.getQueuedThreads().contains(t1));
1099	<	assertTrue(lock.getQueuedThreads().contains(t2));
1100	<	lock.writeLock().unlock();
1101	<	Thread.sleep(SHORT_DELAY_MS);
1102	<	assertTrue(lock.getQueuedThreads().isEmpty());
1103	<	t1.join();
1104	<	t2.join();
936	<	} catch(Exception e){
937	<	unexpectedException();
938	<	}
939	<	}
1085	>	assertTrue(lock.getQueuedThreads().isEmpty());
1086	>	lock.writeLock().lock();
1087	>	assertTrue(lock.getQueuedThreads().isEmpty());
1088	>	t1.start();
1089	>	Thread.sleep(SHORT_DELAY_MS);
1090	>	assertTrue(lock.getQueuedThreads().contains(t1));
1091	>	t2.start();
1092	>	Thread.sleep(SHORT_DELAY_MS);
1093	>	assertTrue(lock.getQueuedThreads().contains(t1));
1094	>	assertTrue(lock.getQueuedThreads().contains(t2));
1095	>	t1.interrupt();
1096	>	Thread.sleep(SHORT_DELAY_MS);
1097	>	assertFalse(lock.getQueuedThreads().contains(t1));
1098	>	assertTrue(lock.getQueuedThreads().contains(t2));
1099	>	lock.writeLock().unlock();
1100	>	Thread.sleep(SHORT_DELAY_MS);
1101	>	assertTrue(lock.getQueuedThreads().isEmpty());
1102	>	t1.join();
1103	>	t2.join();
1104	>	}
1105
1106		/**
1107		* hasWaiters throws NPE if null
1108		*/
1109		public void testHasWaitersNPE() {
1110	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1110	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1111		try {
1112		lock.hasWaiters(null);
1113		shouldThrow();
1114	<	} catch (NullPointerException success) {
950	<	} catch (Exception ex) {
951	<	unexpectedException();
952	<	}
1114	>	} catch (NullPointerException success) {}
1115		}
1116
1117		/**
1118		* getWaitQueueLength throws NPE if null
1119		*/
1120		public void testGetWaitQueueLengthNPE() {
1121	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1121	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1122		try {
1123		lock.getWaitQueueLength(null);
1124		shouldThrow();
1125	<	} catch (NullPointerException success) {
964	<	} catch (Exception ex) {
965	<	unexpectedException();
966	<	}
1125	>	} catch (NullPointerException success) {}
1126		}
1127
1128
#	Line 971 | Line 1130 | public class ReentrantReadWriteLockTest
1130		* getWaitingThreads throws NPE if null
1131		*/
1132		public void testGetWaitingThreadsNPE() {
1133	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1133	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1134		try {
1135		lock.getWaitingThreads(null);
1136		shouldThrow();
1137	<	} catch (NullPointerException success) {
979	<	} catch (Exception ex) {
980	<	unexpectedException();
981	<	}
1137	>	} catch (NullPointerException success) {}
1138		}
1139
1140		/**
1141		* hasWaiters throws IAE if not owned
1142		*/
1143		public void testHasWaitersIAE() {
1144	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1145	<	final Condition c = (lock.writeLock().newCondition());
1146	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1144	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1145	>	final Condition c = lock.writeLock().newCondition();
1146	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1147		try {
1148		lock2.hasWaiters(c);
1149		shouldThrow();
1150	<	} catch (IllegalArgumentException success) {
995	<	} catch (Exception ex) {
996	<	unexpectedException();
997	<	}
1150	>	} catch (IllegalArgumentException success) {}
1151		}
1152
1153		/**
1154		* hasWaiters throws IMSE if not locked
1155		*/
1156		public void testHasWaitersIMSE() {
1157	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1158	<	final Condition c = (lock.writeLock().newCondition());
1157	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1158	>	final Condition c = lock.writeLock().newCondition();
1159		try {
1160		lock.hasWaiters(c);
1161		shouldThrow();
1162	<	} catch (IllegalMonitorStateException success) {
1010	<	} catch (Exception ex) {
1011	<	unexpectedException();
1012	<	}
1162	>	} catch (IllegalMonitorStateException success) {}
1163		}
1164
1165
#	Line 1017 | Line 1167 | public class ReentrantReadWriteLockTest
1167		* getWaitQueueLength throws IAE if not owned
1168		*/
1169		public void testGetWaitQueueLengthIAE() {
1170	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1171	<	final Condition c = (lock.writeLock().newCondition());
1172	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1170	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1171	>	final Condition c = lock.writeLock().newCondition();
1172	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1173		try {
1174		lock2.getWaitQueueLength(c);
1175		shouldThrow();
1176	<	} catch (IllegalArgumentException success) {
1027	<	} catch (Exception ex) {
1028	<	unexpectedException();
1029	<	}
1176	>	} catch (IllegalArgumentException success) {}
1177		}
1178
1179		/**
1180		* getWaitQueueLength throws IMSE if not locked
1181		*/
1182		public void testGetWaitQueueLengthIMSE() {
1183	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1184	<	final Condition c = (lock.writeLock().newCondition());
1183	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1184	>	final Condition c = lock.writeLock().newCondition();
1185		try {
1186		lock.getWaitQueueLength(c);
1187		shouldThrow();
1188	<	} catch (IllegalMonitorStateException success) {
1042	<	} catch (Exception ex) {
1043	<	unexpectedException();
1044	<	}
1188	>	} catch (IllegalMonitorStateException success) {}
1189		}
1190
1191
#	Line 1049 | Line 1193 | public class ReentrantReadWriteLockTest
1193		* getWaitingThreads throws IAE if not owned
1194		*/
1195		public void testGetWaitingThreadsIAE() {
1196	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1197	<	final Condition c = (lock.writeLock().newCondition());
1198	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1196	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1197	>	final Condition c = lock.writeLock().newCondition();
1198	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1199		try {
1200		lock2.getWaitingThreads(c);
1201		shouldThrow();
1202	<	} catch (IllegalArgumentException success) {
1059	<	} catch (Exception ex) {
1060	<	unexpectedException();
1061	<	}
1202	>	} catch (IllegalArgumentException success) {}
1203		}
1204
1205		/**
1206		* getWaitingThreads throws IMSE if not locked
1207		*/
1208		public void testGetWaitingThreadsIMSE() {
1209	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1210	<	final Condition c = (lock.writeLock().newCondition());
1209	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1210	>	final Condition c = lock.writeLock().newCondition();
1211		try {
1212		lock.getWaitingThreads(c);
1213		shouldThrow();
1214	<	} catch (IllegalMonitorStateException success) {
1074	<	} catch (Exception ex) {
1075	<	unexpectedException();
1076	<	}
1214	>	} catch (IllegalMonitorStateException success) {}
1215		}
1216
1217
1218		/**
1219		* hasWaiters returns true when a thread is waiting, else false
1220		*/
1221	<	public void testHasWaiters() {
1222	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1223	<	final Condition c = (lock.writeLock().newCondition());
1224	<	Thread t = new Thread(new Runnable() {
1225	<	public void run() {
1226	<	try {
1227	<	lock.writeLock().lock();
1228	<	threadAssertFalse(lock.hasWaiters(c));
1229	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1230	<	c.await();
1231	<	lock.writeLock().unlock();
1232	<	}
1233	<	catch(InterruptedException e) {
1234	<	threadUnexpectedException();
1235	<	}
1236	<	}
1237	<	});
1238	<
1239	<	try {
1240	<	t.start();
1241	<	Thread.sleep(SHORT_DELAY_MS);
1242	<	lock.writeLock().lock();
1243	<	assertTrue(lock.hasWaiters(c));
1244	<	assertEquals(1, lock.getWaitQueueLength(c));
1245	<	c.signal();
1246	<	lock.writeLock().unlock();
1109	<	Thread.sleep(SHORT_DELAY_MS);
1110	<	lock.writeLock().lock();
1111	<	assertFalse(lock.hasWaiters(c));
1112	<	assertEquals(0, lock.getWaitQueueLength(c));
1113	<	lock.writeLock().unlock();
1114	<	t.join(SHORT_DELAY_MS);
1115	<	assertFalse(t.isAlive());
1116	<	}
1117	<	catch (Exception ex) {
1118	<	unexpectedException();
1119	<	}
1221	>	public void testHasWaiters() throws InterruptedException {
1222	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1223	>	final Condition c = lock.writeLock().newCondition();
1224	>	Thread t = new Thread(new CheckedRunnable() {
1225	>	public void realRun() throws InterruptedException {
1226	>	lock.writeLock().lock();
1227	>	assertFalse(lock.hasWaiters(c));
1228	>	assertEquals(0, lock.getWaitQueueLength(c));
1229	>	c.await();
1230	>	lock.writeLock().unlock();
1231	>	}});
1232	>
1233	>	t.start();
1234	>	Thread.sleep(SHORT_DELAY_MS);
1235	>	lock.writeLock().lock();
1236	>	assertTrue(lock.hasWaiters(c));
1237	>	assertEquals(1, lock.getWaitQueueLength(c));
1238	>	c.signal();
1239	>	lock.writeLock().unlock();
1240	>	Thread.sleep(SHORT_DELAY_MS);
1241	>	lock.writeLock().lock();
1242	>	assertFalse(lock.hasWaiters(c));
1243	>	assertEquals(0, lock.getWaitQueueLength(c));
1244	>	lock.writeLock().unlock();
1245	>	t.join(SHORT_DELAY_MS);
1246	>	assertFalse(t.isAlive());
1247		}
1248
1249		/**
1250		* getWaitQueueLength returns number of waiting threads
1251		*/
1252	<	public void testGetWaitQueueLength() {
1253	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1254	<	final Condition c = (lock.writeLock().newCondition());
1255	<	Thread t = new Thread(new Runnable() {
1256	<	public void run() {
1257	<	try {
1258	<	lock.writeLock().lock();
1259	<	threadAssertFalse(lock.hasWaiters(c));
1260	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1261	<	c.await();
1262	<	lock.writeLock().unlock();
1263	<	}
1264	<	catch(InterruptedException e) {
1265	<	threadUnexpectedException();
1266	<	}
1267	<	}
1268	<	});
1269	<
1270	<	try {
1271	<	t.start();
1272	<	Thread.sleep(SHORT_DELAY_MS);
1273	<	lock.writeLock().lock();
1274	<	assertTrue(lock.hasWaiters(c));
1275	<	assertEquals(1, lock.getWaitQueueLength(c));
1276	<	c.signal();
1277	<	lock.writeLock().unlock();
1151	<	Thread.sleep(SHORT_DELAY_MS);
1152	<	lock.writeLock().lock();
1153	<	assertFalse(lock.hasWaiters(c));
1154	<	assertEquals(0, lock.getWaitQueueLength(c));
1155	<	lock.writeLock().unlock();
1156	<	t.join(SHORT_DELAY_MS);
1157	<	assertFalse(t.isAlive());
1158	<	}
1159	<	catch (Exception ex) {
1160	<	unexpectedException();
1161	<	}
1252	>	public void testGetWaitQueueLength() throws InterruptedException {
1253	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1254	>	final Condition c = lock.writeLock().newCondition();
1255	>	Thread t = new Thread(new CheckedRunnable() {
1256	>	public void realRun() throws InterruptedException {
1257	>	lock.writeLock().lock();
1258	>	assertFalse(lock.hasWaiters(c));
1259	>	assertEquals(0, lock.getWaitQueueLength(c));
1260	>	c.await();
1261	>	lock.writeLock().unlock();
1262	>	}});
1263	>
1264	>	t.start();
1265	>	Thread.sleep(SHORT_DELAY_MS);
1266	>	lock.writeLock().lock();
1267	>	assertTrue(lock.hasWaiters(c));
1268	>	assertEquals(1, lock.getWaitQueueLength(c));
1269	>	c.signal();
1270	>	lock.writeLock().unlock();
1271	>	Thread.sleep(SHORT_DELAY_MS);
1272	>	lock.writeLock().lock();
1273	>	assertFalse(lock.hasWaiters(c));
1274	>	assertEquals(0, lock.getWaitQueueLength(c));
1275	>	lock.writeLock().unlock();
1276	>	t.join(SHORT_DELAY_MS);
1277	>	assertFalse(t.isAlive());
1278		}
1279
1280
1281		/**
1282		* getWaitingThreads returns only and all waiting threads
1283		*/
1284	<	public void testGetWaitingThreads() {
1285	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1284	>	public void testGetWaitingThreads() throws InterruptedException {
1285	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1286		final Condition c = lock.writeLock().newCondition();
1287	<	Thread t1 = new Thread(new Runnable() {
1288	<	public void run() {
1289	<	try {
1290	<	lock.writeLock().lock();
1291	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1292	<	c.await();
1293	<	lock.writeLock().unlock();
1294	<	}
1295	<	catch(InterruptedException e) {
1296	<	threadUnexpectedException();
1297	<	}
1298	<	}
1299	<	});
1300	<
1301	<	Thread t2 = new Thread(new Runnable() {
1302	<	public void run() {
1303	<	try {
1304	<	lock.writeLock().lock();
1305	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1306	<	c.await();
1307	<	lock.writeLock().unlock();
1308	<	}
1309	<	catch(InterruptedException e) {
1310	<	threadUnexpectedException();
1311	<	}
1312	<	}
1313	<	});
1314	<
1315	<	try {
1316	<	lock.writeLock().lock();
1317	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1318	<	lock.writeLock().unlock();
1319	<	t1.start();
1320	<	Thread.sleep(SHORT_DELAY_MS);
1321	<	t2.start();
1322	<	Thread.sleep(SHORT_DELAY_MS);
1323	<	lock.writeLock().lock();
1324	<	assertTrue(lock.hasWaiters(c));
1325	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1326	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1327	<	c.signalAll();
1328	<	lock.writeLock().unlock();
1329	<	Thread.sleep(SHORT_DELAY_MS);
1330	<	lock.writeLock().lock();
1331	<	assertFalse(lock.hasWaiters(c));
1332	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1333	<	lock.writeLock().unlock();
1334	<	t1.join(SHORT_DELAY_MS);
1335	<	t2.join(SHORT_DELAY_MS);
1336	<	assertFalse(t1.isAlive());
1337	<	assertFalse(t2.isAlive());
1338	<	}
1339	<	catch (Exception ex) {
1340	<	unexpectedException();
1341	<	}
1287	>	Thread t1 = new Thread(new CheckedRunnable() {
1288	>	public void realRun() throws InterruptedException {
1289	>	lock.writeLock().lock();
1290	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1291	>	c.await();
1292	>	lock.writeLock().unlock();
1293	>	}});
1294	>
1295	>	Thread t2 = new Thread(new CheckedRunnable() {
1296	>	public void realRun() throws InterruptedException {
1297	>	lock.writeLock().lock();
1298	>	assertFalse(lock.getWaitingThreads(c).isEmpty());
1299	>	c.await();
1300	>	lock.writeLock().unlock();
1301	>	}});
1302	>
1303	>	lock.writeLock().lock();
1304	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1305	>	lock.writeLock().unlock();
1306	>	t1.start();
1307	>	Thread.sleep(SHORT_DELAY_MS);
1308	>	t2.start();
1309	>	Thread.sleep(SHORT_DELAY_MS);
1310	>	lock.writeLock().lock();
1311	>	assertTrue(lock.hasWaiters(c));
1312	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1313	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1314	>	c.signalAll();
1315	>	lock.writeLock().unlock();
1316	>	Thread.sleep(SHORT_DELAY_MS);
1317	>	lock.writeLock().lock();
1318	>	assertFalse(lock.hasWaiters(c));
1319	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1320	>	lock.writeLock().unlock();
1321	>	t1.join(SHORT_DELAY_MS);
1322	>	t2.join(SHORT_DELAY_MS);
1323	>	assertFalse(t1.isAlive());
1324	>	assertFalse(t2.isAlive());
1325	>	}
1326	>
1327	>	/**
1328	>	* toString indicates current lock state
1329	>	*/
1330	>	public void testToString() {
1331	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1332	>	String us = lock.toString();
1333	>	assertTrue(us.indexOf("Write locks = 0") >= 0);
1334	>	assertTrue(us.indexOf("Read locks = 0") >= 0);
1335	>	lock.writeLock().lock();
1336	>	String ws = lock.toString();
1337	>	assertTrue(ws.indexOf("Write locks = 1") >= 0);
1338	>	assertTrue(ws.indexOf("Read locks = 0") >= 0);
1339	>	lock.writeLock().unlock();
1340	>	lock.readLock().lock();
1341	>	lock.readLock().lock();
1342	>	String rs = lock.toString();
1343	>	assertTrue(rs.indexOf("Write locks = 0") >= 0);
1344	>	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1345	>	}
1346	>
1347	>	/**
1348	>	* readLock.toString indicates current lock state
1349	>	*/
1350	>	public void testReadLockToString() {
1351	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1352	>	String us = lock.readLock().toString();
1353	>	assertTrue(us.indexOf("Read locks = 0") >= 0);
1354	>	lock.readLock().lock();
1355	>	lock.readLock().lock();
1356	>	String rs = lock.readLock().toString();
1357	>	assertTrue(rs.indexOf("Read locks = 2") >= 0);
1358	>	}
1359	>
1360	>	/**
1361	>	* writeLock.toString indicates current lock state
1362	>	*/
1363	>	public void testWriteLockToString() {
1364	>	ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1365	>	String us = lock.writeLock().toString();
1366	>	assertTrue(us.indexOf("Unlocked") >= 0);
1367	>	lock.writeLock().lock();
1368	>	String ls = lock.writeLock().toString();
1369	>	assertTrue(ls.indexOf("Locked") >= 0);
1370		}
1371
1372		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines