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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.28 by jsr166, Mon Nov 2 20:28:31 2009 UTC vs.
Revision 1.44 by jsr166, Tue Mar 15 19:47:07 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
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
#	Line 9 | Line 9
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 66 | Line 62 | public class ReentrantReadWriteLockTest
62		* Constructor sets given fairness, and is in unlocked state
63		*/
64		public void testConstructor() {
65	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
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();
83	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
84		rl.writeLock().lock();
85		assertTrue(rl.isWriteLocked());
86		assertTrue(rl.isWriteLockedByCurrentThread());
#	Line 106 | Line 106 | public class ReentrantReadWriteLockTest
106		* locking an unlocked fair lock succeeds
107		*/
108		public void testFairLock() {
109	<	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
109	>	ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
110		rl.writeLock().lock();
111		assertTrue(rl.isWriteLocked());
112		assertTrue(rl.isWriteLockedByCurrentThread());
#	Line 131 | Line 131 | public class ReentrantReadWriteLockTest
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	<	}
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.writeLock().getHoldCount());
153	<	}
154	<	for(int i = SIZE; i > 0; i--) {
155	<	lock.writeLock().unlock();
156	<	assertEquals(i-1,lock.writeLock().getHoldCount());
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
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	<	}
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
#	Line 177 | Line 177 | public class ReentrantReadWriteLockTest
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){}
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	<	Thread.sleep(SHORT_DELAY_MS);
207	<	t.interrupt();
208	<	Thread.sleep(SHORT_DELAY_MS);
209	<	lock.writeLock().unlock();
210	<	t.join();
211	<	} catch(Exception e){
212	<	unexpectedException();
213	<	}
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	<	} catch(InterruptedException success){}
221	<	}
222	<	});
223	<	try {
224	<	t.start();
225	<	t.interrupt();
232	<	lock.writeLock().unlock();
233	<	t.join();
234	<	} catch(Exception e){
235	<	unexpectedException();
236	<	}
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	<	Thread.sleep(SHORT_DELAY_MS);
244	<	t.interrupt();
256	<	Thread.sleep(SHORT_DELAY_MS);
257	<	lock.writeLock().unlock();
258	<	t.join();
259	<	} catch(Exception e){
260	<	unexpectedException();
261	<	}
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 {
279	<	t.start();
280	<	t.interrupt();
281	<	t.join();
282	<	} catch(Exception e){
283	<	unexpectedException();
284	<	}
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
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();
302	<	lock.writeLock().unlock();
303	<	} catch(Exception e){
304	<	unexpectedException();
305	<	}
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();
322	<	lock.writeLock().unlock();
323	<	} catch(Exception e){
324	<	unexpectedException();
325	<	}
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();
343	<	lock.readLock().unlock();
344	<	} catch(Exception e){
345	<	unexpectedException();
346	<	}
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();
365	<	}
366	<	});
367	<
368	<	try {
369	<	t1.start();
370	<	t2.start();
371	<	Thread.sleep(SHORT_DELAY_MS);
372	<	lock.readLock().unlock();
373	<	t1.join(MEDIUM_DELAY_MS);
374	<	t2.join(MEDIUM_DELAY_MS);
375	<	assertTrue(!t1.isAlive());
376	<	assertTrue(!t2.isAlive());
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	<	} catch(Exception e){
332	<	unexpectedException();
333	<	}
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);
408	<	t2.join(MEDIUM_DELAY_MS);
409	<	assertTrue(!t1.isAlive());
410	<	assertTrue(!t2.isAlive());
411	<
412	<	} catch(Exception e){
413	<	unexpectedException();
414	<	}
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();
372	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
373	>	lock.writeLock().lock();
374		assertTrue(lock.readLock().tryLock());
375		lock.readLock().unlock();
376		lock.writeLock().unlock();
#	Line 429 | Line 380 | public class ReentrantReadWriteLockTest
380		* Read lock succeeds if write locked by current thread even if
381		* other threads are waiting for readlock
382		*/
383	<	public void testReadHoldingWriteLock2() {
384	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
385	<	lock.writeLock().lock();
386	<	Thread t1 = new Thread(new Runnable() {
387	<	public void run() {
388	<	lock.readLock().lock();
389	<	lock.readLock().unlock();
390	<	}
391	<	});
392	<	Thread t2 = new Thread(new Runnable() {
393	<	public void run() {
394	<	lock.readLock().lock();
395	<	lock.readLock().unlock();
396	<	}
397	<	});
398	<
399	<	try {
400	<	t1.start();
401	<	t2.start();
402	<	lock.readLock().lock();
403	<	lock.readLock().unlock();
404	<	Thread.sleep(SHORT_DELAY_MS);
405	<	lock.readLock().lock();
406	<	lock.readLock().unlock();
407	<	lock.writeLock().unlock();
408	<	t1.join(MEDIUM_DELAY_MS);
458	<	t2.join(MEDIUM_DELAY_MS);
459	<	assertTrue(!t1.isAlive());
460	<	assertTrue(!t2.isAlive());
461	<
462	<	} catch(Exception e){
463	<	unexpectedException();
464	<	}
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
412	>	* Read lock succeeds if write locked by current thread even if
413		* other threads are waiting for writelock
414		*/
415	<	public void testReadHoldingWriteLock3() {
416	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
417	<	lock.writeLock().lock();
418	<	Thread t1 = new Thread(new Runnable() {
419	<	public void run() {
420	<	lock.writeLock().lock();
421	<	lock.writeLock().unlock();
422	<	}
423	<	});
424	<	Thread t2 = new Thread(new Runnable() {
425	<	public void run() {
426	<	lock.writeLock().lock();
427	<	lock.writeLock().unlock();
484	<	}
485	<	});
486	<
487	<	try {
488	<	t1.start();
489	<	t2.start();
490	<	lock.readLock().lock();
491	<	lock.readLock().unlock();
492	<	Thread.sleep(SHORT_DELAY_MS);
493	<	lock.readLock().lock();
494	<	lock.readLock().unlock();
495	<	lock.writeLock().unlock();
496	<	t1.join(MEDIUM_DELAY_MS);
497	<	t2.join(MEDIUM_DELAY_MS);
498	<	assertTrue(!t1.isAlive());
499	<	assertTrue(!t2.isAlive());
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	<	} catch(Exception e){
430	<	unexpectedException();
431	<	}
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
445	>	* Write lock succeeds if write locked by current thread even if
446		* other threads are waiting for writelock
447		*/
448	<	public void testWriteHoldingWriteLock4() {
449	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
450	<	lock.writeLock().lock();
451	<	Thread t1 = new Thread(new Runnable() {
452	<	public void run() {
453	<	lock.writeLock().lock();
454	<	lock.writeLock().unlock();
455	<	}
456	<	});
457	<	Thread t2 = new Thread(new Runnable() {
458	<	public void run() {
459	<	lock.writeLock().lock();
460	<	lock.writeLock().unlock();
524	<	}
525	<	});
526	<
527	<	try {
528	<	t1.start();
529	<	t2.start();
530	<	lock.writeLock().lock();
531	<	lock.writeLock().unlock();
532	<	Thread.sleep(SHORT_DELAY_MS);
533	<	lock.writeLock().lock();
534	<	lock.writeLock().unlock();
535	<	lock.writeLock().unlock();
536	<	t1.join(MEDIUM_DELAY_MS);
537	<	t2.join(MEDIUM_DELAY_MS);
538	<	assertTrue(!t1.isAlive());
539	<	assertTrue(!t2.isAlive());
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	<	} catch(Exception e){
463	<	unexpectedException();
464	<	}
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
#	Line 548 | Line 478 | public class ReentrantReadWriteLockTest
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();
481	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
482	>	lock.writeLock().lock();
483		assertTrue(lock.readLock().tryLock());
484		lock.readLock().unlock();
485		lock.writeLock().unlock();
#	Line 559 | Line 489 | public class ReentrantReadWriteLockTest
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() {
493	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
494	<	lock.writeLock().lock();
495	<	Thread t1 = new Thread(new Runnable() {
496	<	public void run() {
497	<	lock.readLock().lock();
498	<	lock.readLock().unlock();
499	<	}
500	<	});
501	<	Thread t2 = new Thread(new Runnable() {
502	<	public void run() {
503	<	lock.readLock().lock();
504	<	lock.readLock().unlock();
505	<	}
506	<	});
507	<
508	<	try {
509	<	t1.start();
510	<	t2.start();
511	<	lock.readLock().lock();
512	<	lock.readLock().unlock();
513	<	Thread.sleep(SHORT_DELAY_MS);
514	<	lock.readLock().lock();
515	<	lock.readLock().unlock();
516	<	lock.writeLock().unlock();
517	<	t1.join(MEDIUM_DELAY_MS);
588	<	t2.join(MEDIUM_DELAY_MS);
589	<	assertTrue(!t1.isAlive());
590	<	assertTrue(!t2.isAlive());
591	<
592	<	} catch(Exception e){
593	<	unexpectedException();
594	<	}
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
#	Line 599 | Line 522 | public class ReentrantReadWriteLockTest
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() {
526	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
527	<	lock.writeLock().lock();
528	<	Thread t1 = new Thread(new Runnable() {
529	<	public void run() {
530	<	lock.writeLock().lock();
531	<	lock.writeLock().unlock();
532	<	}
533	<	});
534	<	Thread t2 = new Thread(new Runnable() {
535	<	public void run() {
536	<	lock.writeLock().lock();
537	<	lock.writeLock().unlock();
615	<	}
616	<	});
617	<
618	<	try {
619	<	t1.start();
620	<	t2.start();
621	<	lock.readLock().lock();
622	<	lock.readLock().unlock();
623	<	Thread.sleep(SHORT_DELAY_MS);
624	<	lock.readLock().lock();
625	<	lock.readLock().unlock();
626	<	lock.writeLock().unlock();
627	<	t1.join(MEDIUM_DELAY_MS);
628	<	t2.join(MEDIUM_DELAY_MS);
629	<	assertTrue(!t1.isAlive());
630	<	assertTrue(!t2.isAlive());
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	<	} catch(Exception e){
540	<	unexpectedException();
541	<	}
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
#	Line 639 | Line 555 | public class ReentrantReadWriteLockTest
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() {
559	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
560	<	lock.writeLock().lock();
561	<	Thread t1 = new Thread(new Runnable() {
562	<	public void run() {
563	<	lock.writeLock().lock();
564	<	lock.writeLock().unlock();
565	<	}
566	<	});
567	<	Thread t2 = new Thread(new Runnable() {
568	<	public void run() {
569	<	lock.writeLock().lock();
570	<	lock.writeLock().unlock();
655	<	}
656	<	});
657	<
658	<	try {
659	<	t1.start();
660	<	t2.start();
661	<	Thread.sleep(SHORT_DELAY_MS);
662	<	assertTrue(lock.isWriteLockedByCurrentThread());
663	<	assertTrue(lock.getWriteHoldCount() == 1);
664	<	lock.writeLock().lock();
665	<	assertTrue(lock.getWriteHoldCount() == 2);
666	<	lock.writeLock().unlock();
667	<	lock.writeLock().lock();
668	<	lock.writeLock().unlock();
669	<	lock.writeLock().unlock();
670	<	t1.join(MEDIUM_DELAY_MS);
671	<	t2.join(MEDIUM_DELAY_MS);
672	<	assertTrue(!t1.isAlive());
673	<	assertTrue(!t2.isAlive());
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	<	} catch(Exception e){
573	<	unexpectedException();
574	<	}
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();
696	<	lock.readLock().unlock();
697	<	} catch(Exception e){
698	<	unexpectedException();
699	<	}
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
#	Line 704 | Line 609 | public class ReentrantReadWriteLockTest
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();
718	<	lock.readLock().unlock();
719	<	} catch(Exception e){
720	<	unexpectedException();
721	<	}
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() {
630	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
631	<	lock.readLock().lock();
632	<	Thread t = new Thread(new Runnable() {
633	<	public void run() {
634	<	threadAssertTrue(lock.readLock().tryLock());
635	<	lock.readLock().unlock();
636	<	}
637	<	});
638	<	try {
639	<	t.start();
640	<	t.join();
740	<	lock.readLock().unlock();
741	<	} catch(Exception e){
742	<	unexpectedException();
743	<	}
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
#	Line 748 | Line 645 | public class ReentrantReadWriteLockTest
645		/**
646		* Fair write tryLock fails when readlocked
647		*/
648	<	public void testWriteTryLockWhenReadLockedFair() {
649	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
650	<	lock.readLock().lock();
651	<	Thread t = new Thread(new Runnable() {
652	<	public void run() {
653	<	threadAssertFalse(lock.writeLock().tryLock());
654	<	}
655	<	});
656	<	try {
657	<	t.start();
658	<	t.join();
762	<	lock.readLock().unlock();
763	<	} catch(Exception e){
764	<	unexpectedException();
765	<	}
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
#	Line 770 | Line 663 | public class ReentrantReadWriteLockTest
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	<	});
785	<	try {
786	<	t.start();
787	<	t.join();
788	<	lock.writeLock().unlock();
789	<	} catch(Exception e){
790	<	unexpectedException();
791	<	}
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	<	});
809	<	try {
810	<	t.start();
811	<	t.join();
812	<	lock.writeLock().unlock();
813	<	} catch(Exception e){
814	<	unexpectedException();
815	<	}
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) {
836	<	}
837	<	}
838	<	});
839	<	try {
840	<	t.start();
841	<	Thread.sleep(SHORT_DELAY_MS);
842	<	t.interrupt();
843	<	Thread.sleep(SHORT_DELAY_MS);
844	<	t.join();
845	<	lock.writeLock().unlock();
846	<	} catch(Exception e){
847	<	unexpectedException();
848	<	}
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
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	<	}
867	<	catch(InterruptedException success) {
868	<	}
869	<	}
870	<	});
871	<	try {
872	<	t.start();
873	<	Thread.sleep(SHORT_DELAY_MS);
874	<	t.interrupt();
875	<	t.join();
876	<	lock.writeLock().unlock();
877	<	} catch(Exception e){
878	<	unexpectedException();
879	<	}
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	<	}
892	<	catch (IllegalMonitorStateException success) {
893	<	}
894	<	catch (Exception ex) {
895	<	shouldThrow();
896	<	}
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	<	}
909	<	catch (IllegalMonitorStateException success) {
910	<	}
911	<	catch (Exception ex) {
912	<	unexpectedException();
913	<	}
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();
927	<	}
928	<	catch (Exception ex) {
929	<	unexpectedException();
930	<	}
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	<	lock.writeLock().unlock();
943	<	}
944	<	catch (Exception ex) {
945	<	unexpectedException();
946	<	}
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	<	lock.writeLock().unlock();
959	<	}
960	<	catch (Exception ex) {
961	<	unexpectedException();
962	<	}
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();
977	<	}
978	<	catch(InterruptedException e) {
979	<	threadUnexpectedException();
980	<	}
981	<	}
982	<	});
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	<	try {
810	<	t.start();
811	<	Thread.sleep(SHORT_DELAY_MS);
812	<	lock.writeLock().lock();
813	<	c.signal();
814	<	lock.writeLock().unlock();
815	<	t.join(SHORT_DELAY_MS);
991	<	assertFalse(t.isAlive());
992	<	}
993	<	catch (Exception ex) {
994	<	unexpectedException();
995	<	}
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 */
#	Line 1025 | Line 845 | public class ReentrantReadWriteLockTest
845		/**
846		* awaitUninterruptibly doesn't abort on interrupt
847		*/
848	<	public void testAwaitUninterruptibly() {
848	>	public void testAwaitUninterruptibly() throws InterruptedException {
849		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
850		final Condition c = lock.writeLock().newCondition();
851		UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
852
853	<	try {
1034	<	thread.start();
1035	<
1036	<	while (!thread.lockStarted) {
1037	<	Thread.sleep(100);
1038	<	}
853	>	thread.start();
854
855	<	lock.writeLock().lock();
856	<	try {
857	<	thread.interrupt();
1043	<	thread.canAwake = true;
1044	<	c.signal();
1045	<	} finally {
1046	<	lock.writeLock().unlock();
1047	<	}
855	>	while (!thread.lockStarted) {
856	>	Thread.sleep(100);
857	>	}
858
859	<	thread.join();
860	<	assertTrue(thread.interrupted);
861	<	assertFalse(thread.isAlive());
862	<	} catch (Exception ex) {
863	<	unexpectedException();
859	>	lock.writeLock().lock();
860	>	try {
861	>	thread.interrupt();
862	>	thread.canAwake = true;
863	>	c.signal();
864	>	} finally {
865	>	lock.writeLock().unlock();
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();
1069	<	threadShouldThrow();
1070	<	}
1071	<	catch(InterruptedException success) {
1072	<	}
1073	<	}
1074	<	});
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	<	try {
887	<	t.start();
888	<	Thread.sleep(SHORT_DELAY_MS);
889	<	t.interrupt();
890	<	t.join(SHORT_DELAY_MS);
1081	<	assertFalse(t.isAlive());
1082	<	}
1083	<	catch (Exception ex) {
1084	<	unexpectedException();
1085	<	}
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();
1100	<	threadShouldThrow();
1101	<	}
1102	<	catch(InterruptedException success) {
1103	<	}
1104	<	}
1105	<	});
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	<	try {
907	<	t.start();
908	<	Thread.sleep(SHORT_DELAY_MS);
909	<	t.interrupt();
910	<	t.join(SHORT_DELAY_MS);
1112	<	assertFalse(t.isAlive());
1113	<	}
1114	<	catch (Exception ex) {
1115	<	unexpectedException();
1116	<	}
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();
1132	<	threadShouldThrow();
1133	<	}
1134	<	catch(InterruptedException success) {
1135	<	}
1136	<	}
1137	<	});
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	<	try {
928	<	t.start();
929	<	Thread.sleep(SHORT_DELAY_MS);
930	<	t.interrupt();
931	<	t.join(SHORT_DELAY_MS);
1144	<	assertFalse(t.isAlive());
1145	<	}
1146	<	catch (Exception ex) {
1147	<	unexpectedException();
1148	<	}
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();
1163	<	}
1164	<	catch(InterruptedException e) {
1165	<	threadUnexpectedException();
1166	<	}
1167	<	}
1168	<	});
1169	<
1170	<	Thread t2 = new Thread(new Runnable() {
1171	<	public void run() {
1172	<	try {
1173	<	lock.writeLock().lock();
1174	<	c.await();
1175	<	lock.writeLock().unlock();
1176	<	}
1177	<	catch(InterruptedException e) {
1178	<	threadUnexpectedException();
1179	<	}
1180	<	}
1181	<	});
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	<	try {
948	<	t1.start();
949	<	t2.start();
950	<	Thread.sleep(SHORT_DELAY_MS);
951	<	lock.writeLock().lock();
952	<	c.signalAll();
953	<	lock.writeLock().unlock();
954	<	t1.join(SHORT_DELAY_MS);
955	<	t2.join(SHORT_DELAY_MS);
956	<	assertFalse(t1.isAlive());
957	<	assertFalse(t2.isAlive());
958	<	}
959	<	catch (Exception ex) {
960	<	unexpectedException();
961	<	}
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();
1218	<	r.readLock().unlock();
1219	<	} catch(Exception e){
1220	<	e.printStackTrace();
1221	<	unexpectedException();
1222	<	}
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	<	try {
994	<	assertFalse(lock.hasQueuedThreads());
995	<	lock.writeLock().lock();
996	<	t1.start();
997	<	Thread.sleep(SHORT_DELAY_MS);
998	<	assertTrue(lock.hasQueuedThreads());
999	<	t2.start();
1000	<	Thread.sleep(SHORT_DELAY_MS);
1001	<	assertTrue(lock.hasQueuedThreads());
1002	<	t1.interrupt();
1003	<	Thread.sleep(SHORT_DELAY_MS);
1004	<	assertTrue(lock.hasQueuedThreads());
1005	<	lock.writeLock().unlock();
1006	<	Thread.sleep(SHORT_DELAY_MS);
1007	<	assertFalse(lock.hasQueuedThreads());
1008	<	t1.join();
1248	<	t2.join();
1249	<	} catch(Exception e){
1250	<	unexpectedException();
1251	<	}
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();
1015	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1016		try {
1017		sync.hasQueuedThread(null);
1018		shouldThrow();
1019	<	} catch (NullPointerException success) {
1263	<	}
1019	>	} catch (NullPointerException success) {}
1020		}
1021
1022		/**
1023		* hasQueuedThread reports whether a thread is queued.
1024		*/
1025	<	public void testHasQueuedThread() {
1026	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
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	<	try {
1030	<	assertFalse(sync.hasQueuedThread(t1));
1031	<	assertFalse(sync.hasQueuedThread(t2));
1032	<	sync.writeLock().lock();
1033	<	t1.start();
1034	<	Thread.sleep(SHORT_DELAY_MS);
1035	<	assertTrue(sync.hasQueuedThread(t1));
1036	<	t2.start();
1037	<	Thread.sleep(SHORT_DELAY_MS);
1038	<	assertTrue(sync.hasQueuedThread(t1));
1039	<	assertTrue(sync.hasQueuedThread(t2));
1040	<	t1.interrupt();
1041	<	Thread.sleep(SHORT_DELAY_MS);
1042	<	assertFalse(sync.hasQueuedThread(t1));
1043	<	assertTrue(sync.hasQueuedThread(t2));
1044	<	sync.writeLock().unlock();
1045	<	Thread.sleep(SHORT_DELAY_MS);
1046	<	assertFalse(sync.hasQueuedThread(t1));
1047	<	Thread.sleep(SHORT_DELAY_MS);
1048	<	assertFalse(sync.hasQueuedThread(t2));
1049	<	t1.join();
1294	<	t2.join();
1295	<	} catch(Exception e){
1296	<	unexpectedException();
1297	<	}
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();
1324	<	t2.join();
1325	<	} catch(Exception e){
1326	<	unexpectedException();
1327	<	}
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();
1356	<	t2.join();
1357	<	} catch(Exception e){
1358	<	unexpectedException();
1359	<	}
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) {
1371	<	} catch (Exception ex) {
1372	<	unexpectedException();
1373	<	}
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) {
1385	<	} catch (Exception ex) {
1386	<	unexpectedException();
1387	<	}
1125	>	} catch (NullPointerException success) {}
1126		}
1127
1128
#	Line 1392 | 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) {
1400	<	} catch (Exception ex) {
1401	<	unexpectedException();
1402	<	}
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) {
1416	<	} catch (Exception ex) {
1417	<	unexpectedException();
1418	<	}
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) {
1431	<	} catch (Exception ex) {
1432	<	unexpectedException();
1433	<	}
1162	>	} catch (IllegalMonitorStateException success) {}
1163		}
1164
1165
#	Line 1438 | 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) {
1448	<	} catch (Exception ex) {
1449	<	unexpectedException();
1450	<	}
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) {
1463	<	} catch (Exception ex) {
1464	<	unexpectedException();
1465	<	}
1188	>	} catch (IllegalMonitorStateException success) {}
1189		}
1190
1191
#	Line 1470 | 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) {
1480	<	} catch (Exception ex) {
1481	<	unexpectedException();
1482	<	}
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) {
1495	<	} catch (Exception ex) {
1496	<	unexpectedException();
1497	<	}
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();
1515	<	}
1516	<	catch(InterruptedException e) {
1517	<	threadUnexpectedException();
1518	<	}
1519	<	}
1520	<	});
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	<	try {
1234	<	t.start();
1235	<	Thread.sleep(SHORT_DELAY_MS);
1236	<	lock.writeLock().lock();
1237	<	assertTrue(lock.hasWaiters(c));
1238	<	assertEquals(1, lock.getWaitQueueLength(c));
1239	<	c.signal();
1240	<	lock.writeLock().unlock();
1241	<	Thread.sleep(SHORT_DELAY_MS);
1242	<	lock.writeLock().lock();
1243	<	assertFalse(lock.hasWaiters(c));
1244	<	assertEquals(0, lock.getWaitQueueLength(c));
1245	<	lock.writeLock().unlock();
1246	<	t.join(SHORT_DELAY_MS);
1536	<	assertFalse(t.isAlive());
1537	<	}
1538	<	catch (Exception ex) {
1539	<	unexpectedException();
1540	<	}
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();
1557	<	}
1558	<	catch(InterruptedException e) {
1559	<	threadUnexpectedException();
1560	<	}
1561	<	}
1562	<	});
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	<	try {
1265	<	t.start();
1266	<	Thread.sleep(SHORT_DELAY_MS);
1267	<	lock.writeLock().lock();
1268	<	assertTrue(lock.hasWaiters(c));
1269	<	assertEquals(1, lock.getWaitQueueLength(c));
1270	<	c.signal();
1271	<	lock.writeLock().unlock();
1272	<	Thread.sleep(SHORT_DELAY_MS);
1273	<	lock.writeLock().lock();
1274	<	assertFalse(lock.hasWaiters(c));
1275	<	assertEquals(0, lock.getWaitQueueLength(c));
1276	<	lock.writeLock().unlock();
1277	<	t.join(SHORT_DELAY_MS);
1578	<	assertFalse(t.isAlive());
1579	<	}
1580	<	catch (Exception ex) {
1581	<	unexpectedException();
1582	<	}
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();
1599	<	}
1600	<	catch(InterruptedException e) {
1601	<	threadUnexpectedException();
1602	<	}
1603	<	}
1604	<	});
1605	<
1606	<	Thread t2 = new Thread(new Runnable() {
1607	<	public void run() {
1608	<	try {
1609	<	lock.writeLock().lock();
1610	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1611	<	c.await();
1612	<	lock.writeLock().unlock();
1613	<	}
1614	<	catch(InterruptedException e) {
1615	<	threadUnexpectedException();
1616	<	}
1617	<	}
1618	<	});
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	<	try {
1296	<	lock.writeLock().lock();
1297	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1298	<	lock.writeLock().unlock();
1299	<	t1.start();
1300	<	Thread.sleep(SHORT_DELAY_MS);
1301	<	t2.start();
1302	<	Thread.sleep(SHORT_DELAY_MS);
1303	<	lock.writeLock().lock();
1304	<	assertTrue(lock.hasWaiters(c));
1305	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1306	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1307	<	c.signalAll();
1308	<	lock.writeLock().unlock();
1309	<	Thread.sleep(SHORT_DELAY_MS);
1310	<	lock.writeLock().lock();
1311	<	assertFalse(lock.hasWaiters(c));
1312	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1313	<	lock.writeLock().unlock();
1314	<	t1.join(SHORT_DELAY_MS);
1315	<	t2.join(SHORT_DELAY_MS);
1316	<	assertFalse(t1.isAlive());
1317	<	assertFalse(t2.isAlive());
1318	<	}
1319	<	catch (Exception ex) {
1320	<	unexpectedException();
1321	<	}
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		/**

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