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Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.27 by dl, Thu May 18 10:29:23 2006 UTC vs.
Revision 1.37 by jsr166, Sat Nov 21 10:25:05 2009 UTC

#	Line 2 | Line 2
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4		* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10		import java.util.concurrent.locks.*;
11		import java.util.concurrent.*;
12	+	import static java.util.concurrent.TimeUnit.MILLISECONDS;
13		import java.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());
#	Line 105 | 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());
#	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	<
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	<	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	<	}
214	<	}
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();
231	<	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(1000,MILLISECONDS);
219	>	}});
220	>
221	>	t.start();
222	>	t.interrupt();
223	>	lock.writeLock().unlock();
224	>	t.join();
225		}
226
227		/**
228		* read-lockInterruptibly is interruptible
229		*/
230	<	public void testReadLockInterruptibly_Interrupted() {
231	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
232	<	lock.writeLock().lock();
233	<	Thread t = new Thread(new Runnable() {
234	<	public void run() {
235	<	try {
236	<	lock.readLock().lockInterruptibly();
237	<	} catch(InterruptedException success){}
238	<	}
239	<	});
240	<	try {
241	<	t.start();
242	<	Thread.sleep(SHORT_DELAY_MS);
243	<	t.interrupt();
244	<	Thread.sleep(SHORT_DELAY_MS);
257	<	lock.writeLock().unlock();
258	<	t.join();
259	<	} catch(Exception e){
260	<	unexpectedException();
261	<	}
262	<	}
230	>	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
231	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
232	>	lock.writeLock().lock();
233	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
234	>	public void realRun() throws InterruptedException {
235	>	lock.readLock().lockInterruptibly();
236	>	}});
237	>
238	>	t.start();
239	>	Thread.sleep(SHORT_DELAY_MS);
240	>	t.interrupt();
241	>	Thread.sleep(SHORT_DELAY_MS);
242	>	lock.writeLock().unlock();
243	>	t.join();
244	>	}
245
246		/**
247		* timed read-tryLock is interruptible
248		*/
249	<	public void testReadTryLock_Interrupted() {
250	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
251	<	lock.writeLock().lock();
252	<	Thread t = new Thread(new Runnable() {
253	<	public void run() {
254	<	try {
255	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
256	<	threadShouldThrow();
257	<	} catch(InterruptedException success){}
258	<	}
259	<	});
278	<	try {
279	<	t.start();
280	<	t.interrupt();
281	<	t.join();
282	<	} catch(Exception e){
283	<	unexpectedException();
284	<	}
249	>	public void testReadTryLock_Interrupted() throws InterruptedException {
250	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
251	>	lock.writeLock().lock();
252	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
253	>	public void realRun() throws InterruptedException {
254	>	lock.readLock().tryLock(1000,MILLISECONDS);
255	>	}});
256	>
257	>	t.start();
258	>	t.interrupt();
259	>	t.join();
260		}
261
262	<
262	>
263		/**
264		* write-tryLock fails if locked
265		*/
266	<	public void testWriteTryLockWhenLocked() {
267	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
268	<	lock.writeLock().lock();
269	<	Thread t = new Thread(new Runnable() {
270	<	public void run() {
271	<	threadAssertFalse(lock.writeLock().tryLock());
272	<	}
273	<	});
274	<	try {
275	<	t.start();
276	<	t.join();
277	<	lock.writeLock().unlock();
303	<	} catch(Exception e){
304	<	unexpectedException();
305	<	}
306	<	}
266	>	public void testWriteTryLockWhenLocked() throws InterruptedException {
267	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
268	>	lock.writeLock().lock();
269	>	Thread t = new Thread(new CheckedRunnable() {
270	>	public void realRun() {
271	>	threadAssertFalse(lock.writeLock().tryLock());
272	>	}});
273	>
274	>	t.start();
275	>	t.join();
276	>	lock.writeLock().unlock();
277	>	}
278
279		/**
280		* read-tryLock fails if locked
281		*/
282	<	public void testReadTryLockWhenLocked() {
283	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
284	<	lock.writeLock().lock();
285	<	Thread t = new Thread(new Runnable() {
286	<	public void run() {
287	<	threadAssertFalse(lock.readLock().tryLock());
288	<	}
289	<	});
290	<	try {
291	<	t.start();
292	<	t.join();
293	<	lock.writeLock().unlock();
323	<	} catch(Exception e){
324	<	unexpectedException();
325	<	}
326	<	}
282	>	public void testReadTryLockWhenLocked() throws InterruptedException {
283	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
284	>	lock.writeLock().lock();
285	>	Thread t = new Thread(new CheckedRunnable() {
286	>	public void realRun() {
287	>	threadAssertFalse(lock.readLock().tryLock());
288	>	}});
289	>
290	>	t.start();
291	>	t.join();
292	>	lock.writeLock().unlock();
293	>	}
294
295		/**
296		* Multiple threads can hold a read lock when not write-locked
297		*/
298	<	public void testMultipleReadLocks() {
299	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
300	<	lock.readLock().lock();
301	<	Thread t = new Thread(new Runnable() {
302	<	public void run() {
303	<	threadAssertTrue(lock.readLock().tryLock());
304	<	lock.readLock().unlock();
305	<	}
306	<	});
307	<	try {
308	<	t.start();
309	<	t.join();
310	<	lock.readLock().unlock();
344	<	} catch(Exception e){
345	<	unexpectedException();
346	<	}
347	<	}
298	>	public void testMultipleReadLocks() throws InterruptedException {
299	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
300	>	lock.readLock().lock();
301	>	Thread t = new Thread(new CheckedRunnable() {
302	>	public void realRun() {
303	>	threadAssertTrue(lock.readLock().tryLock());
304	>	lock.readLock().unlock();
305	>	}});
306	>
307	>	t.start();
308	>	t.join();
309	>	lock.readLock().unlock();
310	>	}
311
312		/**
313		* A writelock succeeds after reading threads unlock
314		*/
315	<	public void testWriteAfterMultipleReadLocks() {
316	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
317	<	lock.readLock().lock();
318	<	Thread t1 = new Thread(new Runnable() {
319	<	public void run() {
320	<	lock.readLock().lock();
321	<	lock.readLock().unlock();
322	<	}
323	<	});
324	<	Thread t2 = new Thread(new Runnable() {
325	<	public void run() {
326	<	lock.writeLock().lock();
327	<	lock.writeLock().unlock();
365	<	}
366	<	});
315	>	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
316	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
317	>	lock.readLock().lock();
318	>	Thread t1 = new Thread(new CheckedRunnable() {
319	>	public void realRun() {
320	>	lock.readLock().lock();
321	>	lock.readLock().unlock();
322	>	}});
323	>	Thread t2 = new Thread(new CheckedRunnable() {
324	>	public void realRun() {
325	>	lock.writeLock().lock();
326	>	lock.writeLock().unlock();
327	>	}});
328
329	<	try {
330	<	t1.start();
331	<	t2.start();
332	<	Thread.sleep(SHORT_DELAY_MS);
333	<	lock.readLock().unlock();
334	<	t1.join(MEDIUM_DELAY_MS);
335	<	t2.join(MEDIUM_DELAY_MS);
336	<	assertTrue(!t1.isAlive());
337	<	assertTrue(!t2.isAlive());
377	<
378	<	} catch(Exception e){
379	<	unexpectedException();
380	<	}
381	<	}
329	>	t1.start();
330	>	t2.start();
331	>	Thread.sleep(SHORT_DELAY_MS);
332	>	lock.readLock().unlock();
333	>	t1.join(MEDIUM_DELAY_MS);
334	>	t2.join(MEDIUM_DELAY_MS);
335	>	assertTrue(!t1.isAlive());
336	>	assertTrue(!t2.isAlive());
337	>	}
338
339		/**
340		* Readlocks succeed after a writing thread unlocks
341		*/
342	<	public void testReadAfterWriteLock() {
343	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
344	<	lock.writeLock().lock();
345	<	Thread t1 = new Thread(new Runnable() {
346	<	public void run() {
347	<	lock.readLock().lock();
348	<	lock.readLock().unlock();
349	<	}
350	<	});
351	<	Thread t2 = new Thread(new Runnable() {
352	<	public void run() {
353	<	lock.readLock().lock();
354	<	lock.readLock().unlock();
355	<	}
356	<	});
357	<
358	<	try {
359	<	t1.start();
360	<	t2.start();
361	<	Thread.sleep(SHORT_DELAY_MS);
362	<	lock.writeLock().unlock();
363	<	t1.join(MEDIUM_DELAY_MS);
364	<	t2.join(MEDIUM_DELAY_MS);
409	<	assertTrue(!t1.isAlive());
410	<	assertTrue(!t2.isAlive());
411	<
412	<	} catch(Exception e){
413	<	unexpectedException();
414	<	}
415	<	}
342	>	public void testReadAfterWriteLock() throws InterruptedException {
343	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
344	>	lock.writeLock().lock();
345	>	Thread t1 = new Thread(new CheckedRunnable() {
346	>	public void realRun() {
347	>	lock.readLock().lock();
348	>	lock.readLock().unlock();
349	>	}});
350	>	Thread t2 = new Thread(new CheckedRunnable() {
351	>	public void realRun() {
352	>	lock.readLock().lock();
353	>	lock.readLock().unlock();
354	>	}});
355	>
356	>	t1.start();
357	>	t2.start();
358	>	Thread.sleep(SHORT_DELAY_MS);
359	>	lock.writeLock().unlock();
360	>	t1.join(MEDIUM_DELAY_MS);
361	>	t2.join(MEDIUM_DELAY_MS);
362	>	assertTrue(!t1.isAlive());
363	>	assertTrue(!t2.isAlive());
364	>	}
365
366		/**
367		* Read trylock succeeds if write locked by current thread
368		*/
369	<	public void testReadHoldingWriteLock() {
370	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
371	<	lock.writeLock().lock();
369	>	public void testReadHoldingWriteLock() {
370	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
371	>	lock.writeLock().lock();
372		assertTrue(lock.readLock().tryLock());
373		lock.readLock().unlock();
374		lock.writeLock().unlock();
375	<	}
375	>	}
376
377		/**
378		* Read lock succeeds if write locked by current thread even if
379		* other threads are waiting for readlock
380		*/
381	<	public void testReadHoldingWriteLock2() {
382	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
383	<	lock.writeLock().lock();
384	<	Thread t1 = new Thread(new Runnable() {
385	<	public void run() {
386	<	lock.readLock().lock();
387	<	lock.readLock().unlock();
388	<	}
389	<	});
390	<	Thread t2 = new Thread(new Runnable() {
391	<	public void run() {
392	<	lock.readLock().lock();
393	<	lock.readLock().unlock();
394	<	}
395	<	});
396	<
397	<	try {
398	<	t1.start();
399	<	t2.start();
400	<	lock.readLock().lock();
401	<	lock.readLock().unlock();
402	<	Thread.sleep(SHORT_DELAY_MS);
403	<	lock.readLock().lock();
404	<	lock.readLock().unlock();
405	<	lock.writeLock().unlock();
406	<	t1.join(MEDIUM_DELAY_MS);
407	<	t2.join(MEDIUM_DELAY_MS);
459	<	assertTrue(!t1.isAlive());
460	<	assertTrue(!t2.isAlive());
461	<
462	<	} catch(Exception e){
463	<	unexpectedException();
464	<	}
465	<	}
381	>	public void testReadHoldingWriteLock2() throws InterruptedException {
382	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
383	>	lock.writeLock().lock();
384	>	Thread t1 = new Thread(new CheckedRunnable() {
385	>	public void realRun() {
386	>	lock.readLock().lock();
387	>	lock.readLock().unlock();
388	>	}});
389	>	Thread t2 = new Thread(new CheckedRunnable() {
390	>	public void realRun() {
391	>	lock.readLock().lock();
392	>	lock.readLock().unlock();
393	>	}});
394	>
395	>	t1.start();
396	>	t2.start();
397	>	lock.readLock().lock();
398	>	lock.readLock().unlock();
399	>	Thread.sleep(SHORT_DELAY_MS);
400	>	lock.readLock().lock();
401	>	lock.readLock().unlock();
402	>	lock.writeLock().unlock();
403	>	t1.join(MEDIUM_DELAY_MS);
404	>	t2.join(MEDIUM_DELAY_MS);
405	>	assertTrue(!t1.isAlive());
406	>	assertTrue(!t2.isAlive());
407	>	}
408
409		/**
410		*  Read lock succeeds if write locked by current thread even if
411		* other threads are waiting for writelock
412		*/
413	<	public void testReadHoldingWriteLock3() {
414	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
415	<	lock.writeLock().lock();
416	<	Thread t1 = new Thread(new Runnable() {
417	<	public void run() {
418	<	lock.writeLock().lock();
419	<	lock.writeLock().unlock();
420	<	}
421	<	});
422	<	Thread t2 = new Thread(new Runnable() {
423	<	public void run() {
424	<	lock.writeLock().lock();
425	<	lock.writeLock().unlock();
484	<	}
485	<	});
413	>	public void testReadHoldingWriteLock3() throws InterruptedException {
414	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
415	>	lock.writeLock().lock();
416	>	Thread t1 = new Thread(new CheckedRunnable() {
417	>	public void realRun() {
418	>	lock.writeLock().lock();
419	>	lock.writeLock().unlock();
420	>	}});
421	>	Thread t2 = new Thread(new CheckedRunnable() {
422	>	public void realRun() {
423	>	lock.writeLock().lock();
424	>	lock.writeLock().unlock();
425	>	}});
426
427	<	try {
428	<	t1.start();
429	<	t2.start();
430	<	lock.readLock().lock();
431	<	lock.readLock().unlock();
432	<	Thread.sleep(SHORT_DELAY_MS);
433	<	lock.readLock().lock();
434	<	lock.readLock().unlock();
435	<	lock.writeLock().unlock();
436	<	t1.join(MEDIUM_DELAY_MS);
437	<	t2.join(MEDIUM_DELAY_MS);
438	<	assertTrue(!t1.isAlive());
439	<	assertTrue(!t2.isAlive());
500	<
501	<	} catch(Exception e){
502	<	unexpectedException();
503	<	}
504	<	}
427	>	t1.start();
428	>	t2.start();
429	>	lock.readLock().lock();
430	>	lock.readLock().unlock();
431	>	Thread.sleep(SHORT_DELAY_MS);
432	>	lock.readLock().lock();
433	>	lock.readLock().unlock();
434	>	lock.writeLock().unlock();
435	>	t1.join(MEDIUM_DELAY_MS);
436	>	t2.join(MEDIUM_DELAY_MS);
437	>	assertTrue(!t1.isAlive());
438	>	assertTrue(!t2.isAlive());
439	>	}
440
441
442		/**
443		*  Write lock succeeds if write locked by current thread even if
444		* other threads are waiting for writelock
445		*/
446	<	public void testWriteHoldingWriteLock4() {
447	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
448	<	lock.writeLock().lock();
449	<	Thread t1 = new Thread(new Runnable() {
450	<	public void run() {
451	<	lock.writeLock().lock();
452	<	lock.writeLock().unlock();
453	<	}
454	<	});
455	<	Thread t2 = new Thread(new Runnable() {
456	<	public void run() {
457	<	lock.writeLock().lock();
458	<	lock.writeLock().unlock();
524	<	}
525	<	});
446	>	public void testWriteHoldingWriteLock4() throws InterruptedException {
447	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
448	>	lock.writeLock().lock();
449	>	Thread t1 = new Thread(new CheckedRunnable() {
450	>	public void realRun() {
451	>	lock.writeLock().lock();
452	>	lock.writeLock().unlock();
453	>	}});
454	>	Thread t2 = new Thread(new CheckedRunnable() {
455	>	public void realRun() {
456	>	lock.writeLock().lock();
457	>	lock.writeLock().unlock();
458	>	}});
459
460	<	try {
461	<	t1.start();
462	<	t2.start();
463	<	lock.writeLock().lock();
464	<	lock.writeLock().unlock();
465	<	Thread.sleep(SHORT_DELAY_MS);
466	<	lock.writeLock().lock();
467	<	lock.writeLock().unlock();
468	<	lock.writeLock().unlock();
469	<	t1.join(MEDIUM_DELAY_MS);
470	<	t2.join(MEDIUM_DELAY_MS);
471	<	assertTrue(!t1.isAlive());
472	<	assertTrue(!t2.isAlive());
540	<
541	<	} catch(Exception e){
542	<	unexpectedException();
543	<	}
544	<	}
460	>	t1.start();
461	>	t2.start();
462	>	lock.writeLock().lock();
463	>	lock.writeLock().unlock();
464	>	Thread.sleep(SHORT_DELAY_MS);
465	>	lock.writeLock().lock();
466	>	lock.writeLock().unlock();
467	>	lock.writeLock().unlock();
468	>	t1.join(MEDIUM_DELAY_MS);
469	>	t2.join(MEDIUM_DELAY_MS);
470	>	assertTrue(!t1.isAlive());
471	>	assertTrue(!t2.isAlive());
472	>	}
473
474
475		/**
476		* Fair Read trylock succeeds if write locked by current thread
477		*/
478	<	public void testReadHoldingWriteLockFair() {
479	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
480	<	lock.writeLock().lock();
478	>	public void testReadHoldingWriteLockFair() {
479	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
480	>	lock.writeLock().lock();
481		assertTrue(lock.readLock().tryLock());
482		lock.readLock().unlock();
483		lock.writeLock().unlock();
484	<	}
484	>	}
485
486		/**
487		* Fair Read lock succeeds if write locked by current thread even if
488		* other threads are waiting for readlock
489		*/
490	<	public void testReadHoldingWriteLockFair2() {
491	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
492	<	lock.writeLock().lock();
493	<	Thread t1 = new Thread(new Runnable() {
494	<	public void run() {
495	<	lock.readLock().lock();
496	<	lock.readLock().unlock();
497	<	}
498	<	});
499	<	Thread t2 = new Thread(new Runnable() {
500	<	public void run() {
501	<	lock.readLock().lock();
502	<	lock.readLock().unlock();
503	<	}
504	<	});
505	<
506	<	try {
507	<	t1.start();
508	<	t2.start();
509	<	lock.readLock().lock();
510	<	lock.readLock().unlock();
511	<	Thread.sleep(SHORT_DELAY_MS);
512	<	lock.readLock().lock();
513	<	lock.readLock().unlock();
514	<	lock.writeLock().unlock();
515	<	t1.join(MEDIUM_DELAY_MS);
516	<	t2.join(MEDIUM_DELAY_MS);
589	<	assertTrue(!t1.isAlive());
590	<	assertTrue(!t2.isAlive());
591	<
592	<	} catch(Exception e){
593	<	unexpectedException();
594	<	}
595	<	}
490	>	public void testReadHoldingWriteLockFair2() throws InterruptedException {
491	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
492	>	lock.writeLock().lock();
493	>	Thread t1 = new Thread(new CheckedRunnable() {
494	>	public void realRun() {
495	>	lock.readLock().lock();
496	>	lock.readLock().unlock();
497	>	}});
498	>	Thread t2 = new Thread(new CheckedRunnable() {
499	>	public void realRun() {
500	>	lock.readLock().lock();
501	>	lock.readLock().unlock();
502	>	}});
503	>
504	>	t1.start();
505	>	t2.start();
506	>	lock.readLock().lock();
507	>	lock.readLock().unlock();
508	>	Thread.sleep(SHORT_DELAY_MS);
509	>	lock.readLock().lock();
510	>	lock.readLock().unlock();
511	>	lock.writeLock().unlock();
512	>	t1.join(MEDIUM_DELAY_MS);
513	>	t2.join(MEDIUM_DELAY_MS);
514	>	assertTrue(!t1.isAlive());
515	>	assertTrue(!t2.isAlive());
516	>	}
517
518
519		/**
520		* Fair Read lock succeeds if write locked by current thread even if
521		* other threads are waiting for writelock
522		*/
523	<	public void testReadHoldingWriteLockFair3() {
524	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
525	<	lock.writeLock().lock();
526	<	Thread t1 = new Thread(new Runnable() {
527	<	public void run() {
528	<	lock.writeLock().lock();
529	<	lock.writeLock().unlock();
530	<	}
531	<	});
532	<	Thread t2 = new Thread(new Runnable() {
533	<	public void run() {
534	<	lock.writeLock().lock();
535	<	lock.writeLock().unlock();
615	<	}
616	<	});
523	>	public void testReadHoldingWriteLockFair3() throws InterruptedException {
524	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
525	>	lock.writeLock().lock();
526	>	Thread t1 = new Thread(new CheckedRunnable() {
527	>	public void realRun() {
528	>	lock.writeLock().lock();
529	>	lock.writeLock().unlock();
530	>	}});
531	>	Thread t2 = new Thread(new CheckedRunnable() {
532	>	public void realRun() {
533	>	lock.writeLock().lock();
534	>	lock.writeLock().unlock();
535	>	}});
536
537	<	try {
538	<	t1.start();
539	<	t2.start();
540	<	lock.readLock().lock();
541	<	lock.readLock().unlock();
542	<	Thread.sleep(SHORT_DELAY_MS);
543	<	lock.readLock().lock();
544	<	lock.readLock().unlock();
545	<	lock.writeLock().unlock();
546	<	t1.join(MEDIUM_DELAY_MS);
547	<	t2.join(MEDIUM_DELAY_MS);
548	<	assertTrue(!t1.isAlive());
549	<	assertTrue(!t2.isAlive());
631	<
632	<	} catch(Exception e){
633	<	unexpectedException();
634	<	}
635	<	}
537	>	t1.start();
538	>	t2.start();
539	>	lock.readLock().lock();
540	>	lock.readLock().unlock();
541	>	Thread.sleep(SHORT_DELAY_MS);
542	>	lock.readLock().lock();
543	>	lock.readLock().unlock();
544	>	lock.writeLock().unlock();
545	>	t1.join(MEDIUM_DELAY_MS);
546	>	t2.join(MEDIUM_DELAY_MS);
547	>	assertTrue(!t1.isAlive());
548	>	assertTrue(!t2.isAlive());
549	>	}
550
551
552		/**
553		* Fair Write lock succeeds if write locked by current thread even if
554		* other threads are waiting for writelock
555		*/
556	<	public void testWriteHoldingWriteLockFair4() {
557	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
558	<	lock.writeLock().lock();
559	<	Thread t1 = new Thread(new Runnable() {
560	<	public void run() {
561	<	lock.writeLock().lock();
562	<	lock.writeLock().unlock();
563	<	}
564	<	});
565	<	Thread t2 = new Thread(new Runnable() {
566	<	public void run() {
567	<	lock.writeLock().lock();
568	<	lock.writeLock().unlock();
655	<	}
656	<	});
556	>	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
557	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
558	>	lock.writeLock().lock();
559	>	Thread t1 = new Thread(new CheckedRunnable() {
560	>	public void realRun() {
561	>	lock.writeLock().lock();
562	>	lock.writeLock().unlock();
563	>	}});
564	>	Thread t2 = new Thread(new CheckedRunnable() {
565	>	public void realRun() {
566	>	lock.writeLock().lock();
567	>	lock.writeLock().unlock();
568	>	}});
569
570	<	try {
571	<	t1.start();
572	<	t2.start();
573	<	Thread.sleep(SHORT_DELAY_MS);
574	<	assertTrue(lock.isWriteLockedByCurrentThread());
575	<	assertTrue(lock.getWriteHoldCount() == 1);
576	<	lock.writeLock().lock();
577	<	assertTrue(lock.getWriteHoldCount() == 2);
578	<	lock.writeLock().unlock();
579	<	lock.writeLock().lock();
580	<	lock.writeLock().unlock();
581	<	lock.writeLock().unlock();
582	<	t1.join(MEDIUM_DELAY_MS);
583	<	t2.join(MEDIUM_DELAY_MS);
584	<	assertTrue(!t1.isAlive());
585	<	assertTrue(!t2.isAlive());
674	<
675	<	} catch(Exception e){
676	<	unexpectedException();
677	<	}
678	<	}
570	>	t1.start();
571	>	t2.start();
572	>	Thread.sleep(SHORT_DELAY_MS);
573	>	assertTrue(lock.isWriteLockedByCurrentThread());
574	>	assertTrue(lock.getWriteHoldCount() == 1);
575	>	lock.writeLock().lock();
576	>	assertTrue(lock.getWriteHoldCount() == 2);
577	>	lock.writeLock().unlock();
578	>	lock.writeLock().lock();
579	>	lock.writeLock().unlock();
580	>	lock.writeLock().unlock();
581	>	t1.join(MEDIUM_DELAY_MS);
582	>	t2.join(MEDIUM_DELAY_MS);
583	>	assertTrue(!t1.isAlive());
584	>	assertTrue(!t2.isAlive());
585	>	}
586
587
588		/**
589		* Read tryLock succeeds if readlocked but not writelocked
590		*/
591	<	public void testTryLockWhenReadLocked() {
592	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
593	<	lock.readLock().lock();
594	<	Thread t = new Thread(new Runnable() {
595	<	public void run() {
596	<	threadAssertTrue(lock.readLock().tryLock());
597	<	lock.readLock().unlock();
598	<	}
599	<	});
600	<	try {
601	<	t.start();
602	<	t.join();
603	<	lock.readLock().unlock();
604	<	} catch(Exception e){
698	<	unexpectedException();
699	<	}
700	<	}
591	>	public void testTryLockWhenReadLocked() throws InterruptedException {
592	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
593	>	lock.readLock().lock();
594	>	Thread t = new Thread(new CheckedRunnable() {
595	>	public void realRun() {
596	>	threadAssertTrue(lock.readLock().tryLock());
597	>	lock.readLock().unlock();
598	>	}});
599	>
600	>	t.start();
601	>	t.join();
602	>	lock.readLock().unlock();
603	>	}
604	>
605
702	–
606
607		/**
608		* write tryLock fails when readlocked
609		*/
610	<	public void testWriteTryLockWhenReadLocked() {
611	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
612	<	lock.readLock().lock();
613	<	Thread t = new Thread(new Runnable() {
614	<	public void run() {
615	<	threadAssertFalse(lock.writeLock().tryLock());
616	<	}
617	<	});
618	<	try {
619	<	t.start();
620	<	t.join();
621	<	lock.readLock().unlock();
719	<	} catch(Exception e){
720	<	unexpectedException();
721	<	}
722	<	}
610	>	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
611	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
612	>	lock.readLock().lock();
613	>	Thread t = new Thread(new CheckedRunnable() {
614	>	public void realRun() {
615	>	threadAssertFalse(lock.writeLock().tryLock());
616	>	}});
617	>
618	>	t.start();
619	>	t.join();
620	>	lock.readLock().unlock();
621	>	}
622
623
624		/**
625		* Fair Read tryLock succeeds if readlocked but not writelocked
626		*/
627	<	public void testTryLockWhenReadLockedFair() {
628	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
629	<	lock.readLock().lock();
630	<	Thread t = new Thread(new Runnable() {
631	<	public void run() {
632	<	threadAssertTrue(lock.readLock().tryLock());
633	<	lock.readLock().unlock();
634	<	}
635	<	});
636	<	try {
637	<	t.start();
638	<	t.join();
639	<	lock.readLock().unlock();
640	<	} catch(Exception e){
742	<	unexpectedException();
743	<	}
744	<	}
627	>	public void testTryLockWhenReadLockedFair() throws InterruptedException {
628	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
629	>	lock.readLock().lock();
630	>	Thread t = new Thread(new CheckedRunnable() {
631	>	public void realRun() {
632	>	threadAssertTrue(lock.readLock().tryLock());
633	>	lock.readLock().unlock();
634	>	}});
635	>
636	>	t.start();
637	>	t.join();
638	>	lock.readLock().unlock();
639	>	}
640	>
641
746	–
642
643		/**
644		* Fair write tryLock fails when readlocked
645		*/
646	<	public void testWriteTryLockWhenReadLockedFair() {
647	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
648	<	lock.readLock().lock();
649	<	Thread t = new Thread(new Runnable() {
650	<	public void run() {
651	<	threadAssertFalse(lock.writeLock().tryLock());
652	<	}
653	<	});
654	<	try {
655	<	t.start();
656	<	t.join();
657	<	lock.readLock().unlock();
658	<	} catch(Exception e){
764	<	unexpectedException();
765	<	}
766	<	}
646	>	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
647	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
648	>	lock.readLock().lock();
649	>	Thread t = new Thread(new CheckedRunnable() {
650	>	public void realRun() {
651	>	threadAssertFalse(lock.writeLock().tryLock());
652	>	}});
653	>
654	>	t.start();
655	>	t.join();
656	>	lock.readLock().unlock();
657	>	}
658	>
659
768	–
660
661		/**
662		* write timed tryLock times out if locked
663		*/
664	<	public void testWriteTryLock_Timeout() {
665	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
666	<	lock.writeLock().lock();
667	<	Thread t = new Thread(new Runnable() {
668	<	public void run() {
669	<	try {
670	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
671	<	} catch (Exception ex) {
672	<	threadUnexpectedException();
673	<	}
674	<	}
675	<	});
676	<	try {
786	<	t.start();
787	<	t.join();
788	<	lock.writeLock().unlock();
789	<	} catch(Exception e){
790	<	unexpectedException();
791	<	}
792	<	}
664	>	public void testWriteTryLock_Timeout() throws InterruptedException {
665	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
666	>	lock.writeLock().lock();
667	>	Thread t = new Thread(new CheckedRunnable() {
668	>	public void realRun() throws InterruptedException {
669	>	threadAssertFalse(lock.writeLock().tryLock(1, MILLISECONDS));
670	>	}});
671	>
672	>	t.start();
673	>	t.join();
674	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
675	>	lock.writeLock().unlock();
676	>	}
677
678		/**
679		* read timed tryLock times out if write-locked
680		*/
681	<	public void testReadTryLock_Timeout() {
682	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
683	<	lock.writeLock().lock();
684	<	Thread t = new Thread(new Runnable() {
685	<	public void run() {
686	<	try {
687	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
688	<	} catch (Exception ex) {
689	<	threadUnexpectedException();
690	<	}
691	<	}
692	<	});
693	<	try {
810	<	t.start();
811	<	t.join();
812	<	lock.writeLock().unlock();
813	<	} catch(Exception e){
814	<	unexpectedException();
815	<	}
816	<	}
681	>	public void testReadTryLock_Timeout() throws InterruptedException {
682	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
683	>	lock.writeLock().lock();
684	>	Thread t = new Thread(new CheckedRunnable() {
685	>	public void realRun() throws InterruptedException {
686	>	threadAssertFalse(lock.readLock().tryLock(1, MILLISECONDS));
687	>	}});
688	>
689	>	t.start();
690	>	t.join();
691	>	assertTrue(lock.writeLock().isHeldByCurrentThread());
692	>	lock.writeLock().unlock();
693	>	}
694
695
696		/**
697		* write lockInterruptibly succeeds if lock free else is interruptible
698		*/
699	<	public void testWriteLockInterruptibly() {
700	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
701	<	try {
702	<	lock.writeLock().lockInterruptibly();
703	<	} catch(Exception e) {
704	<	unexpectedException();
705	<	}
706	<	Thread t = new Thread(new Runnable() {
707	<	public void run() {
708	<	try {
709	<	lock.writeLock().lockInterruptibly();
710	<	threadShouldThrow();
711	<	}
712	<	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	<	}
699	>	public void testWriteLockInterruptibly() throws InterruptedException {
700	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
701	>	lock.writeLock().lockInterruptibly();
702	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
703	>	public void realRun() throws InterruptedException {
704	>	lock.writeLock().lockInterruptibly();
705	>	}});
706	>
707	>	t.start();
708	>	Thread.sleep(SHORT_DELAY_MS);
709	>	t.interrupt();
710	>	Thread.sleep(SHORT_DELAY_MS);
711	>	t.join();
712	>	lock.writeLock().unlock();
713		}
714
715		/**
716		*  read lockInterruptibly succeeds if lock free else is interruptible
717		*/
718	<	public void testReadLockInterruptibly() {
719	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
720	<	try {
721	<	lock.writeLock().lockInterruptibly();
722	<	} catch(Exception e) {
723	<	unexpectedException();
724	<	}
725	<	Thread t = new Thread(new Runnable() {
726	<	public void run() {
727	<	try {
728	<	lock.readLock().lockInterruptibly();
729	<	threadShouldThrow();
730	<	}
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	<	}
718	>	public void testReadLockInterruptibly() throws InterruptedException {
719	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
720	>	lock.writeLock().lockInterruptibly();
721	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
722	>	public void realRun() throws InterruptedException {
723	>	lock.readLock().lockInterruptibly();
724	>	}});
725	>
726	>	t.start();
727	>	Thread.sleep(SHORT_DELAY_MS);
728	>	t.interrupt();
729	>	t.join();
730	>	lock.writeLock().unlock();
731		}
732
733		/**
734		* Calling await without holding lock throws IllegalMonitorStateException
735		*/
736	<	public void testAwait_IllegalMonitor() {
737	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
736	>	public void testAwait_IllegalMonitor() throws InterruptedException {
737	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
738		final Condition c = lock.writeLock().newCondition();
739		try {
740		c.await();
741		shouldThrow();
742	<	}
892	<	catch (IllegalMonitorStateException success) {
893	<	}
894	<	catch (Exception ex) {
895	<	shouldThrow();
896	<	}
742	>	} catch (IllegalMonitorStateException success) {}
743		}
744
745		/**
746		* Calling signal without holding lock throws IllegalMonitorStateException
747		*/
748		public void testSignal_IllegalMonitor() {
749	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
749	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
750		final Condition c = lock.writeLock().newCondition();
751		try {
752		c.signal();
753		shouldThrow();
754	<	}
909	<	catch (IllegalMonitorStateException success) {
910	<	}
911	<	catch (Exception ex) {
912	<	unexpectedException();
913	<	}
754	>	} catch (IllegalMonitorStateException success) {}
755		}
756
757		/**
758		* awaitNanos without a signal times out
759		*/
760	<	public void testAwaitNanos_Timeout() {
761	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
760	>	public void testAwaitNanos_Timeout() throws InterruptedException {
761	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
762		final Condition c = lock.writeLock().newCondition();
763	<	try {
764	<	lock.writeLock().lock();
765	<	long t = c.awaitNanos(100);
766	<	assertTrue(t <= 0);
767	<	lock.writeLock().unlock();
927	<	}
928	<	catch (Exception ex) {
929	<	unexpectedException();
930	<	}
763	>
764	>	lock.writeLock().lock();
765	>	long t = c.awaitNanos(100);
766	>	assertTrue(t <= 0);
767	>	lock.writeLock().unlock();
768		}
769
770
771		/**
772		*  timed await without a signal times out
773		*/
774	<	public void testAwait_Timeout() {
775	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
774	>	public void testAwait_Timeout() throws InterruptedException {
775	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
776		final Condition c = lock.writeLock().newCondition();
777	<	try {
778	<	lock.writeLock().lock();
779	<	lock.writeLock().unlock();
943	<	}
944	<	catch (Exception ex) {
945	<	unexpectedException();
946	<	}
777	>	lock.writeLock().lock();
778	>	assertFalse(c.await(SHORT_DELAY_MS, MILLISECONDS));
779	>	lock.writeLock().unlock();
780		}
781
782		/**
783		* awaitUntil without a signal times out
784		*/
785	<	public void testAwaitUntil_Timeout() {
786	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
785	>	public void testAwaitUntil_Timeout() throws InterruptedException {
786	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
787		final Condition c = lock.writeLock().newCondition();
788	<	try {
789	<	lock.writeLock().lock();
790	<	java.util.Date d = new java.util.Date();
791	<	lock.writeLock().unlock();
959	<	}
960	<	catch (Exception ex) {
961	<	unexpectedException();
962	<	}
788	>	lock.writeLock().lock();
789	>	java.util.Date d = new java.util.Date();
790	>	assertFalse(c.awaitUntil(new java.util.Date(d.getTime() + 10)));
791	>	lock.writeLock().unlock();
792		}
793
794		/**
795		* await returns when signalled
796		*/
797	<	public void testAwait() {
798	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
797	>	public void testAwait() throws InterruptedException {
798	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
799		final Condition c = lock.writeLock().newCondition();
800	<	Thread t = new Thread(new Runnable() {
801	<	public void run() {
802	<	try {
803	<	lock.writeLock().lock();
804	<	c.await();
805	<	lock.writeLock().unlock();
977	<	}
978	<	catch(InterruptedException e) {
979	<	threadUnexpectedException();
980	<	}
981	<	}
982	<	});
800	>	Thread t = new Thread(new CheckedRunnable() {
801	>	public void realRun() throws InterruptedException {
802	>	lock.writeLock().lock();
803	>	c.await();
804	>	lock.writeLock().unlock();
805	>	}});
806
807	<	try {
808	<	t.start();
809	<	Thread.sleep(SHORT_DELAY_MS);
810	<	lock.writeLock().lock();
811	<	c.signal();
812	<	lock.writeLock().unlock();
813	<	t.join(SHORT_DELAY_MS);
991	<	assertFalse(t.isAlive());
992	<	}
993	<	catch (Exception ex) {
994	<	unexpectedException();
995	<	}
807	>	t.start();
808	>	Thread.sleep(SHORT_DELAY_MS);
809	>	lock.writeLock().lock();
810	>	c.signal();
811	>	lock.writeLock().unlock();
812	>	t.join(SHORT_DELAY_MS);
813	>	assertFalse(t.isAlive());
814		}
815
816		/** A helper class for uninterruptible wait tests */
817		class UninterruptableThread extends Thread {
818		private Lock lock;
819		private Condition c;
820	<
820	>
821		public volatile boolean canAwake = false;
822		public volatile boolean interrupted = false;
823		public volatile boolean lockStarted = false;
824	<
824	>
825		public UninterruptableThread(Lock lock, Condition c) {
826		this.lock = lock;
827		this.c = c;
828		}
829	<
829	>
830		public synchronized void run() {
831		lock.lock();
832		lockStarted = true;
833	<
833	>
834		while (!canAwake) {
835		c.awaitUninterruptibly();
836		}
837	<
837	>
838		interrupted = isInterrupted();
839		lock.unlock();
840		}
#	Line 1025 | Line 843 | public class ReentrantReadWriteLockTest
843		/**
844		* awaitUninterruptibly doesn't abort on interrupt
845		*/
846	<	public void testAwaitUninterruptibly() {
846	>	public void testAwaitUninterruptibly() throws InterruptedException {
847		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
848		final Condition c = lock.writeLock().newCondition();
849		UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
850
851	<	try {
1034	<	thread.start();
1035	<
1036	<	while (!thread.lockStarted) {
1037	<	Thread.sleep(100);
1038	<	}
851	>	thread.start();
852
853	<	lock.writeLock().lock();
854	<	try {
855	<	thread.interrupt();
1043	<	thread.canAwake = true;
1044	<	c.signal();
1045	<	} finally {
1046	<	lock.writeLock().unlock();
1047	<	}
853	>	while (!thread.lockStarted) {
854	>	Thread.sleep(100);
855	>	}
856
857	<	thread.join();
858	<	assertTrue(thread.interrupted);
859	<	assertFalse(thread.isAlive());
860	<	} catch (Exception ex) {
861	<	unexpectedException();
857	>	lock.writeLock().lock();
858	>	try {
859	>	thread.interrupt();
860	>	thread.canAwake = true;
861	>	c.signal();
862	>	} finally {
863	>	lock.writeLock().unlock();
864		}
865	+
866	+	thread.join();
867	+	assertTrue(thread.interrupted);
868	+	assertFalse(thread.isAlive());
869		}
870
871		/**
872		* await is interruptible
873		*/
874	<	public void testAwait_Interrupt() {
875	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
874	>	public void testAwait_Interrupt() throws InterruptedException {
875	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
876		final Condition c = lock.writeLock().newCondition();
877	<	Thread t = new Thread(new Runnable() {
878	<	public void run() {
879	<	try {
880	<	lock.writeLock().lock();
881	<	c.await();
882	<	lock.writeLock().unlock();
1069	<	threadShouldThrow();
1070	<	}
1071	<	catch(InterruptedException success) {
1072	<	}
1073	<	}
1074	<	});
877	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
878	>	public void realRun() throws InterruptedException {
879	>	lock.writeLock().lock();
880	>	c.await();
881	>	lock.writeLock().unlock();
882	>	}});
883
884	<	try {
885	<	t.start();
886	<	Thread.sleep(SHORT_DELAY_MS);
887	<	t.interrupt();
888	<	t.join(SHORT_DELAY_MS);
1081	<	assertFalse(t.isAlive());
1082	<	}
1083	<	catch (Exception ex) {
1084	<	unexpectedException();
1085	<	}
884	>	t.start();
885	>	Thread.sleep(SHORT_DELAY_MS);
886	>	t.interrupt();
887	>	t.join(SHORT_DELAY_MS);
888	>	assertFalse(t.isAlive());
889		}
890
891		/**
892		* awaitNanos is interruptible
893		*/
894	<	public void testAwaitNanos_Interrupt() {
895	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
894	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
895	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
896		final Condition c = lock.writeLock().newCondition();
897	<	Thread t = new Thread(new Runnable() {
898	<	public void run() {
899	<	try {
900	<	lock.writeLock().lock();
901	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
902	<	lock.writeLock().unlock();
1100	<	threadShouldThrow();
1101	<	}
1102	<	catch(InterruptedException success) {
1103	<	}
1104	<	}
1105	<	});
897	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
898	>	public void realRun() throws InterruptedException {
899	>	lock.writeLock().lock();
900	>	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
901	>	lock.writeLock().unlock();
902	>	}});
903
904	<	try {
905	<	t.start();
906	<	Thread.sleep(SHORT_DELAY_MS);
907	<	t.interrupt();
908	<	t.join(SHORT_DELAY_MS);
1112	<	assertFalse(t.isAlive());
1113	<	}
1114	<	catch (Exception ex) {
1115	<	unexpectedException();
1116	<	}
904	>	t.start();
905	>	Thread.sleep(SHORT_DELAY_MS);
906	>	t.interrupt();
907	>	t.join(SHORT_DELAY_MS);
908	>	assertFalse(t.isAlive());
909		}
910
911		/**
912		* awaitUntil is interruptible
913		*/
914	<	public void testAwaitUntil_Interrupt() {
915	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
914	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
915	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
916		final Condition c = lock.writeLock().newCondition();
917	<	Thread t = new Thread(new Runnable() {
918	<	public void run() {
919	<	try {
920	<	lock.writeLock().lock();
921	<	java.util.Date d = new java.util.Date();
922	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
923	<	lock.writeLock().unlock();
1132	<	threadShouldThrow();
1133	<	}
1134	<	catch(InterruptedException success) {
1135	<	}
1136	<	}
1137	<	});
917	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
918	>	public void realRun() throws InterruptedException {
919	>	lock.writeLock().lock();
920	>	java.util.Date d = new java.util.Date();
921	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
922	>	lock.writeLock().unlock();
923	>	}});
924
925	<	try {
926	<	t.start();
927	<	Thread.sleep(SHORT_DELAY_MS);
928	<	t.interrupt();
929	<	t.join(SHORT_DELAY_MS);
1144	<	assertFalse(t.isAlive());
1145	<	}
1146	<	catch (Exception ex) {
1147	<	unexpectedException();
1148	<	}
925	>	t.start();
926	>	Thread.sleep(SHORT_DELAY_MS);
927	>	t.interrupt();
928	>	t.join(SHORT_DELAY_MS);
929	>	assertFalse(t.isAlive());
930		}
931
932		/**
933		* signalAll wakes up all threads
934		*/
935	<	public void testSignalAll() {
936	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
935	>	public void testSignalAll() throws InterruptedException {
936	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
937		final Condition c = lock.writeLock().newCondition();
938	<	Thread t1 = new Thread(new Runnable() {
939	<	public void run() {
940	<	try {
941	<	lock.writeLock().lock();
942	<	c.await();
943	<	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	<	});
938	>	Thread t1 = new Thread(new CheckedRunnable() {
939	>	public void realRun() throws InterruptedException {
940	>	lock.writeLock().lock();
941	>	c.await();
942	>	lock.writeLock().unlock();
943	>	}});
944
945	<	try {
946	<	t1.start();
947	<	t2.start();
948	<	Thread.sleep(SHORT_DELAY_MS);
949	<	lock.writeLock().lock();
950	<	c.signalAll();
951	<	lock.writeLock().unlock();
952	<	t1.join(SHORT_DELAY_MS);
953	<	t2.join(SHORT_DELAY_MS);
954	<	assertFalse(t1.isAlive());
955	<	assertFalse(t2.isAlive());
956	<	}
957	<	catch (Exception ex) {
958	<	unexpectedException();
959	<	}
945	>	Thread t2 = new Thread(new CheckedRunnable() {
946	>	public void realRun() throws InterruptedException {
947	>	lock.writeLock().lock();
948	>	c.await();
949	>	lock.writeLock().unlock();
950	>	}});
951	>
952	>	t1.start();
953	>	t2.start();
954	>	Thread.sleep(SHORT_DELAY_MS);
955	>	lock.writeLock().lock();
956	>	c.signalAll();
957	>	lock.writeLock().unlock();
958	>	t1.join(SHORT_DELAY_MS);
959	>	t2.join(SHORT_DELAY_MS);
960	>	assertFalse(t1.isAlive());
961	>	assertFalse(t2.isAlive());
962		}
963
964		/**
965		* A serialized lock deserializes as unlocked
966		*/
967	<	public void testSerialization() {
967	>	public void testSerialization() throws Exception {
968		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
969		l.readLock().lock();
970		l.readLock().unlock();
971
972	<	try {
973	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
974	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
975	<	out.writeObject(l);
976	<	out.close();
977	<
978	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
979	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
980	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
981	<	r.readLock().lock();
1218	<	r.readLock().unlock();
1219	<	} catch(Exception e){
1220	<	e.printStackTrace();
1221	<	unexpectedException();
1222	<	}
972	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
973	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
974	>	out.writeObject(l);
975	>	out.close();
976	>
977	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
978	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
979	>	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
980	>	r.readLock().lock();
981	>	r.readLock().unlock();
982		}
983
984		/**
985		* hasQueuedThreads reports whether there are waiting threads
986		*/
987	<	public void testhasQueuedThreads() {
988	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
987	>	public void testhasQueuedThreads() throws InterruptedException {
988	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
989		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
990		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
991	<	try {
992	<	assertFalse(lock.hasQueuedThreads());
993	<	lock.writeLock().lock();
994	<	t1.start();
995	<	Thread.sleep(SHORT_DELAY_MS);
996	<	assertTrue(lock.hasQueuedThreads());
997	<	t2.start();
998	<	Thread.sleep(SHORT_DELAY_MS);
999	<	assertTrue(lock.hasQueuedThreads());
1000	<	t1.interrupt();
1001	<	Thread.sleep(SHORT_DELAY_MS);
1002	<	assertTrue(lock.hasQueuedThreads());
1003	<	lock.writeLock().unlock();
1004	<	Thread.sleep(SHORT_DELAY_MS);
1005	<	assertFalse(lock.hasQueuedThreads());
1006	<	t1.join();
1007	<	t2.join();
1249	<	} catch(Exception e){
1250	<	unexpectedException();
1251	<	}
1252	<	}
991	>	assertFalse(lock.hasQueuedThreads());
992	>	lock.writeLock().lock();
993	>	t1.start();
994	>	Thread.sleep(SHORT_DELAY_MS);
995	>	assertTrue(lock.hasQueuedThreads());
996	>	t2.start();
997	>	Thread.sleep(SHORT_DELAY_MS);
998	>	assertTrue(lock.hasQueuedThreads());
999	>	t1.interrupt();
1000	>	Thread.sleep(SHORT_DELAY_MS);
1001	>	assertTrue(lock.hasQueuedThreads());
1002	>	lock.writeLock().unlock();
1003	>	Thread.sleep(SHORT_DELAY_MS);
1004	>	assertFalse(lock.hasQueuedThreads());
1005	>	t1.join();
1006	>	t2.join();
1007	>	}
1008
1009		/**
1010		* hasQueuedThread(null) throws NPE
1011		*/
1012	<	public void testHasQueuedThreadNPE() {
1013	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1012	>	public void testHasQueuedThreadNPE() {
1013	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1014		try {
1015		sync.hasQueuedThread(null);
1016		shouldThrow();
1017	<	} catch (NullPointerException success) {
1263	<	}
1017	>	} catch (NullPointerException success) {}
1018		}
1019
1020		/**
1021		* hasQueuedThread reports whether a thread is queued.
1022		*/
1023	<	public void testHasQueuedThread() {
1024	<	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1023	>	public void testHasQueuedThread() throws InterruptedException {
1024	>	final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1025		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
1026		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
1027	<	try {
1028	<	assertFalse(sync.hasQueuedThread(t1));
1029	<	assertFalse(sync.hasQueuedThread(t2));
1030	<	sync.writeLock().lock();
1031	<	t1.start();
1032	<	Thread.sleep(SHORT_DELAY_MS);
1033	<	assertTrue(sync.hasQueuedThread(t1));
1034	<	t2.start();
1035	<	Thread.sleep(SHORT_DELAY_MS);
1036	<	assertTrue(sync.hasQueuedThread(t1));
1037	<	assertTrue(sync.hasQueuedThread(t2));
1038	<	t1.interrupt();
1039	<	Thread.sleep(SHORT_DELAY_MS);
1040	<	assertFalse(sync.hasQueuedThread(t1));
1041	<	assertTrue(sync.hasQueuedThread(t2));
1042	<	sync.writeLock().unlock();
1043	<	Thread.sleep(SHORT_DELAY_MS);
1044	<	assertFalse(sync.hasQueuedThread(t1));
1045	<	Thread.sleep(SHORT_DELAY_MS);
1046	<	assertFalse(sync.hasQueuedThread(t2));
1047	<	t1.join();
1048	<	t2.join();
1295	<	} catch(Exception e){
1296	<	unexpectedException();
1297	<	}
1298	<	}
1027	>	assertFalse(sync.hasQueuedThread(t1));
1028	>	assertFalse(sync.hasQueuedThread(t2));
1029	>	sync.writeLock().lock();
1030	>	t1.start();
1031	>	Thread.sleep(SHORT_DELAY_MS);
1032	>	assertTrue(sync.hasQueuedThread(t1));
1033	>	t2.start();
1034	>	Thread.sleep(SHORT_DELAY_MS);
1035	>	assertTrue(sync.hasQueuedThread(t1));
1036	>	assertTrue(sync.hasQueuedThread(t2));
1037	>	t1.interrupt();
1038	>	Thread.sleep(SHORT_DELAY_MS);
1039	>	assertFalse(sync.hasQueuedThread(t1));
1040	>	assertTrue(sync.hasQueuedThread(t2));
1041	>	sync.writeLock().unlock();
1042	>	Thread.sleep(SHORT_DELAY_MS);
1043	>	assertFalse(sync.hasQueuedThread(t1));
1044	>	Thread.sleep(SHORT_DELAY_MS);
1045	>	assertFalse(sync.hasQueuedThread(t2));
1046	>	t1.join();
1047	>	t2.join();
1048	>	}
1049
1050
1051		/**
1052		* getQueueLength reports number of waiting threads
1053		*/
1054	<	public void testGetQueueLength() {
1055	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1054	>	public void testGetQueueLength() throws InterruptedException {
1055	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1056		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1057		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1058	<	try {
1059	<	assertEquals(0, lock.getQueueLength());
1060	<	lock.writeLock().lock();
1061	<	t1.start();
1062	<	Thread.sleep(SHORT_DELAY_MS);
1063	<	assertEquals(1, lock.getQueueLength());
1064	<	t2.start();
1065	<	Thread.sleep(SHORT_DELAY_MS);
1066	<	assertEquals(2, lock.getQueueLength());
1067	<	t1.interrupt();
1068	<	Thread.sleep(SHORT_DELAY_MS);
1069	<	assertEquals(1, lock.getQueueLength());
1070	<	lock.writeLock().unlock();
1071	<	Thread.sleep(SHORT_DELAY_MS);
1072	<	assertEquals(0, lock.getQueueLength());
1073	<	t1.join();
1074	<	t2.join();
1325	<	} catch(Exception e){
1326	<	unexpectedException();
1327	<	}
1328	<	}
1058	>	assertEquals(0, lock.getQueueLength());
1059	>	lock.writeLock().lock();
1060	>	t1.start();
1061	>	Thread.sleep(SHORT_DELAY_MS);
1062	>	assertEquals(1, lock.getQueueLength());
1063	>	t2.start();
1064	>	Thread.sleep(SHORT_DELAY_MS);
1065	>	assertEquals(2, lock.getQueueLength());
1066	>	t1.interrupt();
1067	>	Thread.sleep(SHORT_DELAY_MS);
1068	>	assertEquals(1, lock.getQueueLength());
1069	>	lock.writeLock().unlock();
1070	>	Thread.sleep(SHORT_DELAY_MS);
1071	>	assertEquals(0, lock.getQueueLength());
1072	>	t1.join();
1073	>	t2.join();
1074	>	}
1075
1076		/**
1077		* getQueuedThreads includes waiting threads
1078		*/
1079	<	public void testGetQueuedThreads() {
1080	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1079	>	public void testGetQueuedThreads() throws InterruptedException {
1080	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1081		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1082		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1083	<	try {
1084	<	assertTrue(lock.getQueuedThreads().isEmpty());
1085	<	lock.writeLock().lock();
1086	<	assertTrue(lock.getQueuedThreads().isEmpty());
1087	<	t1.start();
1088	<	Thread.sleep(SHORT_DELAY_MS);
1089	<	assertTrue(lock.getQueuedThreads().contains(t1));
1090	<	t2.start();
1091	<	Thread.sleep(SHORT_DELAY_MS);
1092	<	assertTrue(lock.getQueuedThreads().contains(t1));
1093	<	assertTrue(lock.getQueuedThreads().contains(t2));
1094	<	t1.interrupt();
1095	<	Thread.sleep(SHORT_DELAY_MS);
1096	<	assertFalse(lock.getQueuedThreads().contains(t1));
1097	<	assertTrue(lock.getQueuedThreads().contains(t2));
1098	<	lock.writeLock().unlock();
1099	<	Thread.sleep(SHORT_DELAY_MS);
1100	<	assertTrue(lock.getQueuedThreads().isEmpty());
1101	<	t1.join();
1102	<	t2.join();
1357	<	} catch(Exception e){
1358	<	unexpectedException();
1359	<	}
1360	<	}
1083	>	assertTrue(lock.getQueuedThreads().isEmpty());
1084	>	lock.writeLock().lock();
1085	>	assertTrue(lock.getQueuedThreads().isEmpty());
1086	>	t1.start();
1087	>	Thread.sleep(SHORT_DELAY_MS);
1088	>	assertTrue(lock.getQueuedThreads().contains(t1));
1089	>	t2.start();
1090	>	Thread.sleep(SHORT_DELAY_MS);
1091	>	assertTrue(lock.getQueuedThreads().contains(t1));
1092	>	assertTrue(lock.getQueuedThreads().contains(t2));
1093	>	t1.interrupt();
1094	>	Thread.sleep(SHORT_DELAY_MS);
1095	>	assertFalse(lock.getQueuedThreads().contains(t1));
1096	>	assertTrue(lock.getQueuedThreads().contains(t2));
1097	>	lock.writeLock().unlock();
1098	>	Thread.sleep(SHORT_DELAY_MS);
1099	>	assertTrue(lock.getQueuedThreads().isEmpty());
1100	>	t1.join();
1101	>	t2.join();
1102	>	}
1103
1104		/**
1105		* hasWaiters throws NPE if null
1106		*/
1107		public void testHasWaitersNPE() {
1108	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1108	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1109		try {
1110		lock.hasWaiters(null);
1111		shouldThrow();
1112	<	} catch (NullPointerException success) {
1371	<	} catch (Exception ex) {
1372	<	unexpectedException();
1373	<	}
1112	>	} catch (NullPointerException success) {}
1113		}
1114
1115		/**
1116		* getWaitQueueLength throws NPE if null
1117		*/
1118		public void testGetWaitQueueLengthNPE() {
1119	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1119	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1120		try {
1121		lock.getWaitQueueLength(null);
1122		shouldThrow();
1123	<	} catch (NullPointerException success) {
1385	<	} catch (Exception ex) {
1386	<	unexpectedException();
1387	<	}
1123	>	} catch (NullPointerException success) {}
1124		}
1125
1126
#	Line 1392 | Line 1128 | public class ReentrantReadWriteLockTest
1128		* getWaitingThreads throws NPE if null
1129		*/
1130		public void testGetWaitingThreadsNPE() {
1131	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1131	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1132		try {
1133		lock.getWaitingThreads(null);
1134		shouldThrow();
1135	<	} catch (NullPointerException success) {
1400	<	} catch (Exception ex) {
1401	<	unexpectedException();
1402	<	}
1135	>	} catch (NullPointerException success) {}
1136		}
1137
1138		/**
1139		* hasWaiters throws IAE if not owned
1140		*/
1141		public void testHasWaitersIAE() {
1142	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1143	<	final Condition c = (lock.writeLock().newCondition());
1144	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1142	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1143	>	final Condition c = lock.writeLock().newCondition();
1144	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1145		try {
1146		lock2.hasWaiters(c);
1147		shouldThrow();
1148	<	} catch (IllegalArgumentException success) {
1416	<	} catch (Exception ex) {
1417	<	unexpectedException();
1418	<	}
1148	>	} catch (IllegalArgumentException success) {}
1149		}
1150
1151		/**
1152		* hasWaiters throws IMSE if not locked
1153		*/
1154		public void testHasWaitersIMSE() {
1155	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1156	<	final Condition c = (lock.writeLock().newCondition());
1155	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1156	>	final Condition c = lock.writeLock().newCondition();
1157		try {
1158		lock.hasWaiters(c);
1159		shouldThrow();
1160	<	} catch (IllegalMonitorStateException success) {
1431	<	} catch (Exception ex) {
1432	<	unexpectedException();
1433	<	}
1160	>	} catch (IllegalMonitorStateException success) {}
1161		}
1162
1163
#	Line 1438 | Line 1165 | public class ReentrantReadWriteLockTest
1165		* getWaitQueueLength throws IAE if not owned
1166		*/
1167		public void testGetWaitQueueLengthIAE() {
1168	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1169	<	final Condition c = (lock.writeLock().newCondition());
1170	<	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1168	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1169	>	final Condition c = lock.writeLock().newCondition();
1170	>	final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1171		try {
1172		lock2.getWaitQueueLength(c);
1173		shouldThrow();
1174	<	} catch (IllegalArgumentException success) {
1448	<	} catch (Exception ex) {
1449	<	unexpectedException();
1450	<	}
1174	>	} catch (IllegalArgumentException success) {}
1175		}
1176
1177		/**
1178		* getWaitQueueLength throws IMSE if not locked
1179		*/
1180		public void testGetWaitQueueLengthIMSE() {
1181	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1182	<	final Condition c = (lock.writeLock().newCondition());
1181	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1182	>	final Condition c = lock.writeLock().newCondition();
1183		try {
1184		lock.getWaitQueueLength(c);
1185		shouldThrow();
1186	<	} catch (IllegalMonitorStateException success) {
1463	<	} catch (Exception ex) {
1464	<	unexpectedException();
1465	<	}
1186	>	} catch (IllegalMonitorStateException success) {}
1187		}
1188
1189
#	Line 1470 | Line 1191 | public class ReentrantReadWriteLockTest
1191		* getWaitingThreads throws IAE if not owned
1192		*/
1193		public void testGetWaitingThreadsIAE() {
1194	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1195	<	final Condition c = (lock.writeLock().newCondition());
1196	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1194	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1195	>	final Condition c = lock.writeLock().newCondition();
1196	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1197		try {
1198		lock2.getWaitingThreads(c);
1199		shouldThrow();
1200	<	} catch (IllegalArgumentException success) {
1480	<	} catch (Exception ex) {
1481	<	unexpectedException();
1482	<	}
1200	>	} catch (IllegalArgumentException success) {}
1201		}
1202
1203		/**
1204		* getWaitingThreads throws IMSE if not locked
1205		*/
1206		public void testGetWaitingThreadsIMSE() {
1207	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1208	<	final Condition c = (lock.writeLock().newCondition());
1207	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1208	>	final Condition c = lock.writeLock().newCondition();
1209		try {
1210		lock.getWaitingThreads(c);
1211		shouldThrow();
1212	<	} catch (IllegalMonitorStateException success) {
1495	<	} catch (Exception ex) {
1496	<	unexpectedException();
1497	<	}
1212	>	} catch (IllegalMonitorStateException success) {}
1213		}
1214
1215
1216		/**
1217		* hasWaiters returns true when a thread is waiting, else false
1218		*/
1219	<	public void testHasWaiters() {
1220	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1221	<	final Condition c = (lock.writeLock().newCondition());
1222	<	Thread t = new Thread(new Runnable() {
1223	<	public void run() {
1224	<	try {
1225	<	lock.writeLock().lock();
1226	<	threadAssertFalse(lock.hasWaiters(c));
1227	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1228	<	c.await();
1229	<	lock.writeLock().unlock();
1515	<	}
1516	<	catch(InterruptedException e) {
1517	<	threadUnexpectedException();
1518	<	}
1519	<	}
1520	<	});
1219	>	public void testHasWaiters() throws InterruptedException {
1220	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1221	>	final Condition c = lock.writeLock().newCondition();
1222	>	Thread t = new Thread(new CheckedRunnable() {
1223	>	public void realRun() throws InterruptedException {
1224	>	lock.writeLock().lock();
1225	>	threadAssertFalse(lock.hasWaiters(c));
1226	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
1227	>	c.await();
1228	>	lock.writeLock().unlock();
1229	>	}});
1230
1231	<	try {
1232	<	t.start();
1233	<	Thread.sleep(SHORT_DELAY_MS);
1234	<	lock.writeLock().lock();
1235	<	assertTrue(lock.hasWaiters(c));
1236	<	assertEquals(1, lock.getWaitQueueLength(c));
1237	<	c.signal();
1238	<	lock.writeLock().unlock();
1239	<	Thread.sleep(SHORT_DELAY_MS);
1240	<	lock.writeLock().lock();
1241	<	assertFalse(lock.hasWaiters(c));
1242	<	assertEquals(0, lock.getWaitQueueLength(c));
1243	<	lock.writeLock().unlock();
1244	<	t.join(SHORT_DELAY_MS);
1536	<	assertFalse(t.isAlive());
1537	<	}
1538	<	catch (Exception ex) {
1539	<	unexpectedException();
1540	<	}
1231	>	t.start();
1232	>	Thread.sleep(SHORT_DELAY_MS);
1233	>	lock.writeLock().lock();
1234	>	assertTrue(lock.hasWaiters(c));
1235	>	assertEquals(1, lock.getWaitQueueLength(c));
1236	>	c.signal();
1237	>	lock.writeLock().unlock();
1238	>	Thread.sleep(SHORT_DELAY_MS);
1239	>	lock.writeLock().lock();
1240	>	assertFalse(lock.hasWaiters(c));
1241	>	assertEquals(0, lock.getWaitQueueLength(c));
1242	>	lock.writeLock().unlock();
1243	>	t.join(SHORT_DELAY_MS);
1244	>	assertFalse(t.isAlive());
1245		}
1246
1247		/**
1248		* getWaitQueueLength returns number of waiting threads
1249		*/
1250	<	public void testGetWaitQueueLength() {
1251	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1252	<	final Condition c = (lock.writeLock().newCondition());
1253	<	Thread t = new Thread(new Runnable() {
1254	<	public void run() {
1255	<	try {
1256	<	lock.writeLock().lock();
1257	<	threadAssertFalse(lock.hasWaiters(c));
1258	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1259	<	c.await();
1260	<	lock.writeLock().unlock();
1557	<	}
1558	<	catch(InterruptedException e) {
1559	<	threadUnexpectedException();
1560	<	}
1561	<	}
1562	<	});
1250	>	public void testGetWaitQueueLength() throws InterruptedException {
1251	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1252	>	final Condition c = lock.writeLock().newCondition();
1253	>	Thread t = new Thread(new CheckedRunnable() {
1254	>	public void realRun() throws InterruptedException {
1255	>	lock.writeLock().lock();
1256	>	threadAssertFalse(lock.hasWaiters(c));
1257	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
1258	>	c.await();
1259	>	lock.writeLock().unlock();
1260	>	}});
1261
1262	<	try {
1263	<	t.start();
1264	<	Thread.sleep(SHORT_DELAY_MS);
1265	<	lock.writeLock().lock();
1266	<	assertTrue(lock.hasWaiters(c));
1267	<	assertEquals(1, lock.getWaitQueueLength(c));
1268	<	c.signal();
1269	<	lock.writeLock().unlock();
1270	<	Thread.sleep(SHORT_DELAY_MS);
1271	<	lock.writeLock().lock();
1272	<	assertFalse(lock.hasWaiters(c));
1273	<	assertEquals(0, lock.getWaitQueueLength(c));
1274	<	lock.writeLock().unlock();
1275	<	t.join(SHORT_DELAY_MS);
1578	<	assertFalse(t.isAlive());
1579	<	}
1580	<	catch (Exception ex) {
1581	<	unexpectedException();
1582	<	}
1262	>	t.start();
1263	>	Thread.sleep(SHORT_DELAY_MS);
1264	>	lock.writeLock().lock();
1265	>	assertTrue(lock.hasWaiters(c));
1266	>	assertEquals(1, lock.getWaitQueueLength(c));
1267	>	c.signal();
1268	>	lock.writeLock().unlock();
1269	>	Thread.sleep(SHORT_DELAY_MS);
1270	>	lock.writeLock().lock();
1271	>	assertFalse(lock.hasWaiters(c));
1272	>	assertEquals(0, lock.getWaitQueueLength(c));
1273	>	lock.writeLock().unlock();
1274	>	t.join(SHORT_DELAY_MS);
1275	>	assertFalse(t.isAlive());
1276		}
1277
1278
1279		/**
1280		* getWaitingThreads returns only and all waiting threads
1281		*/
1282	<	public void testGetWaitingThreads() {
1283	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1282	>	public void testGetWaitingThreads() throws InterruptedException {
1283	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1284		final Condition c = lock.writeLock().newCondition();
1285	<	Thread t1 = new Thread(new Runnable() {
1286	<	public void run() {
1287	<	try {
1288	<	lock.writeLock().lock();
1289	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1290	<	c.await();
1291	<	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	<	});
1285	>	Thread t1 = new Thread(new CheckedRunnable() {
1286	>	public void realRun() throws InterruptedException {
1287	>	lock.writeLock().lock();
1288	>	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1289	>	c.await();
1290	>	lock.writeLock().unlock();
1291	>	}});
1292
1293	<	try {
1294	<	lock.writeLock().lock();
1295	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1296	<	lock.writeLock().unlock();
1297	<	t1.start();
1298	<	Thread.sleep(SHORT_DELAY_MS);
1299	<	t2.start();
1300	<	Thread.sleep(SHORT_DELAY_MS);
1301	<	lock.writeLock().lock();
1302	<	assertTrue(lock.hasWaiters(c));
1303	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1304	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1305	<	c.signalAll();
1306	<	lock.writeLock().unlock();
1307	<	Thread.sleep(SHORT_DELAY_MS);
1308	<	lock.writeLock().lock();
1309	<	assertFalse(lock.hasWaiters(c));
1310	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1311	<	lock.writeLock().unlock();
1312	<	t1.join(SHORT_DELAY_MS);
1313	<	t2.join(SHORT_DELAY_MS);
1314	<	assertFalse(t1.isAlive());
1315	<	assertFalse(t2.isAlive());
1316	<	}
1317	<	catch (Exception ex) {
1318	<	unexpectedException();
1319	<	}
1293	>	Thread t2 = new Thread(new CheckedRunnable() {
1294	>	public void realRun() throws InterruptedException {
1295	>	lock.writeLock().lock();
1296	>	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1297	>	c.await();
1298	>	lock.writeLock().unlock();
1299	>	}});
1300	>
1301	>	lock.writeLock().lock();
1302	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1303	>	lock.writeLock().unlock();
1304	>	t1.start();
1305	>	Thread.sleep(SHORT_DELAY_MS);
1306	>	t2.start();
1307	>	Thread.sleep(SHORT_DELAY_MS);
1308	>	lock.writeLock().lock();
1309	>	assertTrue(lock.hasWaiters(c));
1310	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1311	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1312	>	c.signalAll();
1313	>	lock.writeLock().unlock();
1314	>	Thread.sleep(SHORT_DELAY_MS);
1315	>	lock.writeLock().lock();
1316	>	assertFalse(lock.hasWaiters(c));
1317	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1318	>	lock.writeLock().unlock();
1319	>	t1.join(SHORT_DELAY_MS);
1320	>	t2.join(SHORT_DELAY_MS);
1321	>	assertFalse(t1.isAlive());
1322	>	assertFalse(t2.isAlive());
1323		}
1324
1325		/**

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