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

Comparing jsr166/src/test/tck/ReentrantReadWriteLockTest.java (file contents):
Revision 1.27 by dl, Thu May 18 10:29:23 2006 UTC vs.
Revision 1.33 by jsr166, Tue Nov 17 14:33:55 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.*;
#	Line 14 | Line 14 | import java.util.*;
14
15		public class ReentrantReadWriteLockTest extends JSR166TestCase {
16		public static void main(String[] args) {
17	<	junit.textui.TestRunner.run (suite());
17	>	junit.textui.TestRunner.run (suite());
18		}
19		public static Test suite() {
20		return new TestSuite(ReentrantReadWriteLockTest.class);
#	Line 23 | Line 23 | public class ReentrantReadWriteLockTest
23		/**
24		* A runnable calling lockInterruptibly
25		*/
26	<	class InterruptibleLockRunnable implements Runnable {
26	>	class InterruptibleLockRunnable extends CheckedRunnable {
27		final ReentrantReadWriteLock lock;
28		InterruptibleLockRunnable(ReentrantReadWriteLock l) { lock = l; }
29	<	public void run() {
30	<	try {
31	<	lock.writeLock().lockInterruptibly();
32	<	} catch(InterruptedException success){}
29	>	public void realRun() throws InterruptedException {
30	>	lock.writeLock().lockInterruptibly();
31		}
32		}
33
#	Line 38 | Line 36 | public class ReentrantReadWriteLockTest
36		* A runnable calling lockInterruptibly that expects to be
37		* interrupted
38		*/
39	<	class InterruptedLockRunnable implements Runnable {
39	>	class InterruptedLockRunnable extends CheckedInterruptedRunnable {
40		final ReentrantReadWriteLock lock;
41		InterruptedLockRunnable(ReentrantReadWriteLock l) { lock = l; }
42	<	public void run() {
43	<	try {
46	<	lock.writeLock().lockInterruptibly();
47	<	threadShouldThrow();
48	<	} catch(InterruptedException success){}
42	>	public void realRun() throws InterruptedException {
43	>	lock.writeLock().lockInterruptibly();
44		}
45		}
46
#	Line 54 | Line 49 | public class ReentrantReadWriteLockTest
49		*/
50		static class PublicReentrantReadWriteLock extends ReentrantReadWriteLock {
51		PublicReentrantReadWriteLock() { super(); }
52	<	public Collection<Thread> getQueuedThreads() {
53	<	return super.getQueuedThreads();
52	>	public Collection<Thread> getQueuedThreads() {
53	>	return super.getQueuedThreads();
54		}
55	<	public Collection<Thread> getWaitingThreads(Condition c) {
56	<	return super.getWaitingThreads(c);
55	>	public Collection<Thread> getWaitingThreads(Condition c) {
56	>	return super.getWaitingThreads(c);
57		}
58		}
59
60		/**
61		* Constructor sets given fairness, and is in unlocked state
62		*/
63	<	public void testConstructor() {
63	>	public void testConstructor() {
64		ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
65		assertFalse(rl.isFair());
66		assertFalse(rl.isWriteLocked());
#	Line 74 | Line 69 | public class ReentrantReadWriteLockTest
69		assertTrue(r2.isFair());
70		assertFalse(r2.isWriteLocked());
71		assertEquals(0, r2.getReadLockCount());
72	+	ReentrantReadWriteLock r3 = new ReentrantReadWriteLock(false);
73	+	assertFalse(r3.isFair());
74	+	assertFalse(r3.isWriteLocked());
75	+	assertEquals(0, r3.getReadLockCount());
76		}
77
78		/**
79		* write-locking and read-locking an unlocked lock succeed
80		*/
81	<	public void testLock() {
81	>	public void testLock() {
82		ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
83		rl.writeLock().lock();
84		assertTrue(rl.isWriteLocked());
#	Line 105 | Line 104 | public class ReentrantReadWriteLockTest
104		/**
105		* locking an unlocked fair lock succeeds
106		*/
107	<	public void testFairLock() {
107	>	public void testFairLock() {
108		ReentrantReadWriteLock rl = new ReentrantReadWriteLock(true);
109		rl.writeLock().lock();
110		assertTrue(rl.isWriteLocked());
#	Line 132 | Line 131 | public class ReentrantReadWriteLockTest
131		*/
132		public void testGetWriteHoldCount() {
133		ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
134	<	for(int i = 1; i <= SIZE; i++) {
134	>	for (int i = 1; i <= SIZE; i++) {
135		lock.writeLock().lock();
136		assertEquals(i,lock.getWriteHoldCount());
137		}
138	<	for(int i = SIZE; i > 0; i--) {
138	>	for (int i = SIZE; i > 0; i--) {
139		lock.writeLock().unlock();
140		assertEquals(i-1,lock.getWriteHoldCount());
141		}
#	Line 147 | Line 146 | public class ReentrantReadWriteLockTest
146		*/
147		public void testGetHoldCount() {
148		ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
149	<	for(int i = 1; i <= SIZE; i++) {
149	>	for (int i = 1; i <= SIZE; i++) {
150		lock.writeLock().lock();
151		assertEquals(i,lock.writeLock().getHoldCount());
152		}
153	<	for(int i = SIZE; i > 0; i--) {
153	>	for (int i = SIZE; i > 0; i--) {
154		lock.writeLock().unlock();
155		assertEquals(i-1,lock.writeLock().getHoldCount());
156		}
#	Line 162 | Line 161 | public class ReentrantReadWriteLockTest
161		*/
162		public void testGetReadHoldCount() {
163		ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
164	<	for(int i = 1; i <= SIZE; i++) {
164	>	for (int i = 1; i <= SIZE; i++) {
165		lock.readLock().lock();
166		assertEquals(i,lock.getReadHoldCount());
167		}
168	<	for(int i = SIZE; i > 0; i--) {
168	>	for (int i = SIZE; i > 0; i--) {
169		lock.readLock().unlock();
170		assertEquals(i-1,lock.getReadHoldCount());
171		}
172		}
173	<
173	>
174
175		/**
176		* write-unlocking an unlocked lock throws IllegalMonitorStateException
177		*/
178	<	public void testUnlock_IllegalMonitorStateException() {
178	>	public void testUnlock_IllegalMonitorStateException() {
179		ReentrantReadWriteLock rl = new ReentrantReadWriteLock();
180		try {
181		rl.writeLock().unlock();
182		shouldThrow();
183	<	} catch(IllegalMonitorStateException success){}
183	>	} catch (IllegalMonitorStateException success) {}
184		}
185
186
187		/**
188		* write-lockInterruptibly is interruptible
189		*/
190	<	public void testWriteLockInterruptibly_Interrupted() {
190	>	public void testWriteLockInterruptibly_Interrupted() throws Exception {
191		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
192	<	Thread t = new Thread(new Runnable() {
193	<	public void run() {
194	<	try {
195	<	lock.writeLock().lockInterruptibly();
196	<	lock.writeLock().unlock();
197	<	lock.writeLock().lockInterruptibly();
198	<	lock.writeLock().unlock();
199	<	} catch(InterruptedException success){}
200	<	}
201	<	});
202	<	try {
203	<	lock.writeLock().lock();
204	<	t.start();
205	<	Thread.sleep(SHORT_DELAY_MS);
206	<	t.interrupt();
207	<	Thread.sleep(SHORT_DELAY_MS);
209	<	lock.writeLock().unlock();
210	<	t.join();
211	<	} catch(Exception e){
212	<	unexpectedException();
213	<	}
214	<	}
192	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
193	>	public void realRun() throws InterruptedException {
194	>	lock.writeLock().lockInterruptibly();
195	>	lock.writeLock().unlock();
196	>	lock.writeLock().lockInterruptibly();
197	>	lock.writeLock().unlock();
198	>	}});
199	>
200	>	lock.writeLock().lock();
201	>	t.start();
202	>	Thread.sleep(SHORT_DELAY_MS);
203	>	t.interrupt();
204	>	Thread.sleep(SHORT_DELAY_MS);
205	>	lock.writeLock().unlock();
206	>	t.join();
207	>	}
208
209		/**
210		* timed write-tryLock is interruptible
211		*/
212	<	public void testWriteTryLock_Interrupted() {
212	>	public void testWriteTryLock_Interrupted() throws InterruptedException {
213		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
214		lock.writeLock().lock();
215	<	Thread t = new Thread(new Runnable() {
216	<	public void run() {
217	<	try {
218	<	lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
219	<	} catch(InterruptedException success){}
220	<	}
221	<	});
222	<	try {
223	<	t.start();
231	<	t.interrupt();
232	<	lock.writeLock().unlock();
233	<	t.join();
234	<	} catch(Exception e){
235	<	unexpectedException();
236	<	}
215	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
216	>	public void realRun() throws InterruptedException {
217	>	lock.writeLock().tryLock(1000,TimeUnit.MILLISECONDS);
218	>	}});
219	>
220	>	t.start();
221	>	t.interrupt();
222	>	lock.writeLock().unlock();
223	>	t.join();
224		}
225
226		/**
227		* read-lockInterruptibly is interruptible
228		*/
229	<	public void testReadLockInterruptibly_Interrupted() {
229	>	public void testReadLockInterruptibly_Interrupted() throws InterruptedException {
230		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
231		lock.writeLock().lock();
232	<	Thread t = new Thread(new Runnable() {
233	<	public void run() {
234	<	try {
235	<	lock.readLock().lockInterruptibly();
236	<	} catch(InterruptedException success){}
237	<	}
238	<	});
239	<	try {
240	<	t.start();
241	<	Thread.sleep(SHORT_DELAY_MS);
242	<	t.interrupt();
243	<	Thread.sleep(SHORT_DELAY_MS);
257	<	lock.writeLock().unlock();
258	<	t.join();
259	<	} catch(Exception e){
260	<	unexpectedException();
261	<	}
262	<	}
232	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
233	>	public void realRun() throws InterruptedException {
234	>	lock.readLock().lockInterruptibly();
235	>	}});
236	>
237	>	t.start();
238	>	Thread.sleep(SHORT_DELAY_MS);
239	>	t.interrupt();
240	>	Thread.sleep(SHORT_DELAY_MS);
241	>	lock.writeLock().unlock();
242	>	t.join();
243	>	}
244
245		/**
246		* timed read-tryLock is interruptible
247		*/
248	<	public void testReadTryLock_Interrupted() {
248	>	public void testReadTryLock_Interrupted() throws InterruptedException {
249		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
250		lock.writeLock().lock();
251	<	Thread t = new Thread(new Runnable() {
252	<	public void run() {
253	<	try {
254	<	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
255	<	threadShouldThrow();
256	<	} catch(InterruptedException success){}
257	<	}
258	<	});
278	<	try {
279	<	t.start();
280	<	t.interrupt();
281	<	t.join();
282	<	} catch(Exception e){
283	<	unexpectedException();
284	<	}
251	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
252	>	public void realRun() throws InterruptedException {
253	>	lock.readLock().tryLock(1000,TimeUnit.MILLISECONDS);
254	>	}});
255	>
256	>	t.start();
257	>	t.interrupt();
258	>	t.join();
259		}
260
261	<
261	>
262		/**
263		* write-tryLock fails if locked
264		*/
265	<	public void testWriteTryLockWhenLocked() {
265	>	public void testWriteTryLockWhenLocked() throws InterruptedException {
266		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
267		lock.writeLock().lock();
268		Thread t = new Thread(new Runnable() {
#	Line 296 | Line 270 | public class ReentrantReadWriteLockTest
270		threadAssertFalse(lock.writeLock().tryLock());
271		}
272		});
273	<	try {
274	<	t.start();
275	<	t.join();
276	<	lock.writeLock().unlock();
277	<	} catch(Exception e){
304	<	unexpectedException();
305	<	}
306	<	}
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() {
282	>	public void testReadTryLockWhenLocked() throws InterruptedException {
283		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
284		lock.writeLock().lock();
285		Thread t = new Thread(new Runnable() {
#	Line 316 | Line 287 | public class ReentrantReadWriteLockTest
287		threadAssertFalse(lock.readLock().tryLock());
288		}
289		});
290	<	try {
291	<	t.start();
292	<	t.join();
293	<	lock.writeLock().unlock();
294	<	} catch(Exception e){
324	<	unexpectedException();
325	<	}
326	<	}
290	>
291	>	t.start();
292	>	t.join();
293	>	lock.writeLock().unlock();
294	>	}
295
296		/**
297		* Multiple threads can hold a read lock when not write-locked
298		*/
299	<	public void testMultipleReadLocks() {
299	>	public void testMultipleReadLocks() throws InterruptedException {
300		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
301		lock.readLock().lock();
302		Thread t = new Thread(new Runnable() {
#	Line 337 | Line 305 | public class ReentrantReadWriteLockTest
305		lock.readLock().unlock();
306		}
307		});
308	<	try {
309	<	t.start();
310	<	t.join();
311	<	lock.readLock().unlock();
312	<	} catch(Exception e){
345	<	unexpectedException();
346	<	}
347	<	}
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() {
317	>	public void testWriteAfterMultipleReadLocks() throws InterruptedException {
318		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
319		lock.readLock().lock();
320		Thread t1 = new Thread(new Runnable() {
#	Line 365 | Line 330 | public class ReentrantReadWriteLockTest
330		}
331		});
332
333	<	try {
334	<	t1.start();
335	<	t2.start();
336	<	Thread.sleep(SHORT_DELAY_MS);
337	<	lock.readLock().unlock();
338	<	t1.join(MEDIUM_DELAY_MS);
339	<	t2.join(MEDIUM_DELAY_MS);
340	<	assertTrue(!t1.isAlive());
341	<	assertTrue(!t2.isAlive());
377	<
378	<	} catch(Exception e){
379	<	unexpectedException();
380	<	}
381	<	}
333	>	t1.start();
334	>	t2.start();
335	>	Thread.sleep(SHORT_DELAY_MS);
336	>	lock.readLock().unlock();
337	>	t1.join(MEDIUM_DELAY_MS);
338	>	t2.join(MEDIUM_DELAY_MS);
339	>	assertTrue(!t1.isAlive());
340	>	assertTrue(!t2.isAlive());
341	>	}
342
343		/**
344		* Readlocks succeed after a writing thread unlocks
345		*/
346	<	public void testReadAfterWriteLock() {
346	>	public void testReadAfterWriteLock() throws InterruptedException {
347		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
348		lock.writeLock().lock();
349		Thread t1 = new Thread(new Runnable() {
#	Line 399 | Line 359 | public class ReentrantReadWriteLockTest
359		}
360		});
361
362	<	try {
363	<	t1.start();
364	<	t2.start();
365	<	Thread.sleep(SHORT_DELAY_MS);
366	<	lock.writeLock().unlock();
367	<	t1.join(MEDIUM_DELAY_MS);
368	<	t2.join(MEDIUM_DELAY_MS);
369	<	assertTrue(!t1.isAlive());
370	<	assertTrue(!t2.isAlive());
411	<
412	<	} catch(Exception e){
413	<	unexpectedException();
414	<	}
415	<	}
362	>	t1.start();
363	>	t2.start();
364	>	Thread.sleep(SHORT_DELAY_MS);
365	>	lock.writeLock().unlock();
366	>	t1.join(MEDIUM_DELAY_MS);
367	>	t2.join(MEDIUM_DELAY_MS);
368	>	assertTrue(!t1.isAlive());
369	>	assertTrue(!t2.isAlive());
370	>	}
371
372		/**
373		* Read trylock succeeds if write locked by current thread
374		*/
375	<	public void testReadHoldingWriteLock() {
375	>	public void testReadHoldingWriteLock() {
376		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
377		lock.writeLock().lock();
378		assertTrue(lock.readLock().tryLock());
379		lock.readLock().unlock();
380		lock.writeLock().unlock();
381	<	}
381	>	}
382
383		/**
384		* Read lock succeeds if write locked by current thread even if
385		* other threads are waiting for readlock
386		*/
387	<	public void testReadHoldingWriteLock2() {
387	>	public void testReadHoldingWriteLock2() throws InterruptedException {
388		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
389		lock.writeLock().lock();
390		Thread t1 = new Thread(new Runnable() {
#	Line 445 | Line 400 | public class ReentrantReadWriteLockTest
400		}
401		});
402
403	<	try {
404	<	t1.start();
405	<	t2.start();
406	<	lock.readLock().lock();
407	<	lock.readLock().unlock();
408	<	Thread.sleep(SHORT_DELAY_MS);
409	<	lock.readLock().lock();
410	<	lock.readLock().unlock();
411	<	lock.writeLock().unlock();
412	<	t1.join(MEDIUM_DELAY_MS);
413	<	t2.join(MEDIUM_DELAY_MS);
414	<	assertTrue(!t1.isAlive());
415	<	assertTrue(!t2.isAlive());
461	<
462	<	} catch(Exception e){
463	<	unexpectedException();
464	<	}
465	<	}
403	>	t1.start();
404	>	t2.start();
405	>	lock.readLock().lock();
406	>	lock.readLock().unlock();
407	>	Thread.sleep(SHORT_DELAY_MS);
408	>	lock.readLock().lock();
409	>	lock.readLock().unlock();
410	>	lock.writeLock().unlock();
411	>	t1.join(MEDIUM_DELAY_MS);
412	>	t2.join(MEDIUM_DELAY_MS);
413	>	assertTrue(!t1.isAlive());
414	>	assertTrue(!t2.isAlive());
415	>	}
416
417		/**
418		*  Read lock succeeds if write locked by current thread even if
419		* other threads are waiting for writelock
420		*/
421	<	public void testReadHoldingWriteLock3() {
421	>	public void testReadHoldingWriteLock3() throws InterruptedException {
422		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
423		lock.writeLock().lock();
424		Thread t1 = new Thread(new Runnable() {
#	Line 484 | Line 434 | public class ReentrantReadWriteLockTest
434		}
435		});
436
437	<	try {
438	<	t1.start();
439	<	t2.start();
440	<	lock.readLock().lock();
441	<	lock.readLock().unlock();
442	<	Thread.sleep(SHORT_DELAY_MS);
443	<	lock.readLock().lock();
444	<	lock.readLock().unlock();
445	<	lock.writeLock().unlock();
446	<	t1.join(MEDIUM_DELAY_MS);
447	<	t2.join(MEDIUM_DELAY_MS);
448	<	assertTrue(!t1.isAlive());
449	<	assertTrue(!t2.isAlive());
500	<
501	<	} catch(Exception e){
502	<	unexpectedException();
503	<	}
504	<	}
437	>	t1.start();
438	>	t2.start();
439	>	lock.readLock().lock();
440	>	lock.readLock().unlock();
441	>	Thread.sleep(SHORT_DELAY_MS);
442	>	lock.readLock().lock();
443	>	lock.readLock().unlock();
444	>	lock.writeLock().unlock();
445	>	t1.join(MEDIUM_DELAY_MS);
446	>	t2.join(MEDIUM_DELAY_MS);
447	>	assertTrue(!t1.isAlive());
448	>	assertTrue(!t2.isAlive());
449	>	}
450
451
452		/**
453		*  Write lock succeeds if write locked by current thread even if
454		* other threads are waiting for writelock
455		*/
456	<	public void testWriteHoldingWriteLock4() {
456	>	public void testWriteHoldingWriteLock4() throws InterruptedException {
457		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
458		lock.writeLock().lock();
459		Thread t1 = new Thread(new Runnable() {
#	Line 524 | Line 469 | public class ReentrantReadWriteLockTest
469		}
470		});
471
472	<	try {
473	<	t1.start();
474	<	t2.start();
475	<	lock.writeLock().lock();
476	<	lock.writeLock().unlock();
477	<	Thread.sleep(SHORT_DELAY_MS);
478	<	lock.writeLock().lock();
479	<	lock.writeLock().unlock();
480	<	lock.writeLock().unlock();
481	<	t1.join(MEDIUM_DELAY_MS);
482	<	t2.join(MEDIUM_DELAY_MS);
483	<	assertTrue(!t1.isAlive());
484	<	assertTrue(!t2.isAlive());
540	<
541	<	} catch(Exception e){
542	<	unexpectedException();
543	<	}
544	<	}
472	>	t1.start();
473	>	t2.start();
474	>	lock.writeLock().lock();
475	>	lock.writeLock().unlock();
476	>	Thread.sleep(SHORT_DELAY_MS);
477	>	lock.writeLock().lock();
478	>	lock.writeLock().unlock();
479	>	lock.writeLock().unlock();
480	>	t1.join(MEDIUM_DELAY_MS);
481	>	t2.join(MEDIUM_DELAY_MS);
482	>	assertTrue(!t1.isAlive());
483	>	assertTrue(!t2.isAlive());
484	>	}
485
486
487		/**
488		* Fair Read trylock succeeds if write locked by current thread
489		*/
490	<	public void testReadHoldingWriteLockFair() {
490	>	public void testReadHoldingWriteLockFair() {
491		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
492		lock.writeLock().lock();
493		assertTrue(lock.readLock().tryLock());
494		lock.readLock().unlock();
495		lock.writeLock().unlock();
496	<	}
496	>	}
497
498		/**
499		* Fair Read lock succeeds if write locked by current thread even if
500		* other threads are waiting for readlock
501		*/
502	<	public void testReadHoldingWriteLockFair2() {
502	>	public void testReadHoldingWriteLockFair2() throws InterruptedException {
503		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
504		lock.writeLock().lock();
505		Thread t1 = new Thread(new Runnable() {
#	Line 575 | Line 515 | public class ReentrantReadWriteLockTest
515		}
516		});
517
518	<	try {
519	<	t1.start();
520	<	t2.start();
521	<	lock.readLock().lock();
522	<	lock.readLock().unlock();
523	<	Thread.sleep(SHORT_DELAY_MS);
524	<	lock.readLock().lock();
525	<	lock.readLock().unlock();
526	<	lock.writeLock().unlock();
527	<	t1.join(MEDIUM_DELAY_MS);
528	<	t2.join(MEDIUM_DELAY_MS);
529	<	assertTrue(!t1.isAlive());
530	<	assertTrue(!t2.isAlive());
591	<
592	<	} catch(Exception e){
593	<	unexpectedException();
594	<	}
595	<	}
518	>	t1.start();
519	>	t2.start();
520	>	lock.readLock().lock();
521	>	lock.readLock().unlock();
522	>	Thread.sleep(SHORT_DELAY_MS);
523	>	lock.readLock().lock();
524	>	lock.readLock().unlock();
525	>	lock.writeLock().unlock();
526	>	t1.join(MEDIUM_DELAY_MS);
527	>	t2.join(MEDIUM_DELAY_MS);
528	>	assertTrue(!t1.isAlive());
529	>	assertTrue(!t2.isAlive());
530	>	}
531
532
533		/**
534		* Fair Read lock succeeds if write locked by current thread even if
535		* other threads are waiting for writelock
536		*/
537	<	public void testReadHoldingWriteLockFair3() {
537	>	public void testReadHoldingWriteLockFair3() throws InterruptedException {
538		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
539		lock.writeLock().lock();
540		Thread t1 = new Thread(new Runnable() {
#	Line 615 | Line 550 | public class ReentrantReadWriteLockTest
550		}
551		});
552
553	<	try {
554	<	t1.start();
555	<	t2.start();
556	<	lock.readLock().lock();
557	<	lock.readLock().unlock();
558	<	Thread.sleep(SHORT_DELAY_MS);
559	<	lock.readLock().lock();
560	<	lock.readLock().unlock();
561	<	lock.writeLock().unlock();
562	<	t1.join(MEDIUM_DELAY_MS);
563	<	t2.join(MEDIUM_DELAY_MS);
564	<	assertTrue(!t1.isAlive());
565	<	assertTrue(!t2.isAlive());
631	<
632	<	} catch(Exception e){
633	<	unexpectedException();
634	<	}
635	<	}
553	>	t1.start();
554	>	t2.start();
555	>	lock.readLock().lock();
556	>	lock.readLock().unlock();
557	>	Thread.sleep(SHORT_DELAY_MS);
558	>	lock.readLock().lock();
559	>	lock.readLock().unlock();
560	>	lock.writeLock().unlock();
561	>	t1.join(MEDIUM_DELAY_MS);
562	>	t2.join(MEDIUM_DELAY_MS);
563	>	assertTrue(!t1.isAlive());
564	>	assertTrue(!t2.isAlive());
565	>	}
566
567
568		/**
569		* Fair Write lock succeeds if write locked by current thread even if
570		* other threads are waiting for writelock
571		*/
572	<	public void testWriteHoldingWriteLockFair4() {
572	>	public void testWriteHoldingWriteLockFair4() throws InterruptedException {
573		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
574		lock.writeLock().lock();
575		Thread t1 = new Thread(new Runnable() {
#	Line 655 | Line 585 | public class ReentrantReadWriteLockTest
585		}
586		});
587
588	<	try {
589	<	t1.start();
590	<	t2.start();
591	<	Thread.sleep(SHORT_DELAY_MS);
592	<	assertTrue(lock.isWriteLockedByCurrentThread());
593	<	assertTrue(lock.getWriteHoldCount() == 1);
594	<	lock.writeLock().lock();
595	<	assertTrue(lock.getWriteHoldCount() == 2);
596	<	lock.writeLock().unlock();
597	<	lock.writeLock().lock();
598	<	lock.writeLock().unlock();
599	<	lock.writeLock().unlock();
600	<	t1.join(MEDIUM_DELAY_MS);
601	<	t2.join(MEDIUM_DELAY_MS);
602	<	assertTrue(!t1.isAlive());
603	<	assertTrue(!t2.isAlive());
674	<
675	<	} catch(Exception e){
676	<	unexpectedException();
677	<	}
678	<	}
588	>	t1.start();
589	>	t2.start();
590	>	Thread.sleep(SHORT_DELAY_MS);
591	>	assertTrue(lock.isWriteLockedByCurrentThread());
592	>	assertTrue(lock.getWriteHoldCount() == 1);
593	>	lock.writeLock().lock();
594	>	assertTrue(lock.getWriteHoldCount() == 2);
595	>	lock.writeLock().unlock();
596	>	lock.writeLock().lock();
597	>	lock.writeLock().unlock();
598	>	lock.writeLock().unlock();
599	>	t1.join(MEDIUM_DELAY_MS);
600	>	t2.join(MEDIUM_DELAY_MS);
601	>	assertTrue(!t1.isAlive());
602	>	assertTrue(!t2.isAlive());
603	>	}
604
605
606		/**
607		* Read tryLock succeeds if readlocked but not writelocked
608		*/
609	<	public void testTryLockWhenReadLocked() {
609	>	public void testTryLockWhenReadLocked() throws InterruptedException {
610		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
611		lock.readLock().lock();
612		Thread t = new Thread(new Runnable() {
#	Line 690 | Line 615 | public class ReentrantReadWriteLockTest
615		lock.readLock().unlock();
616		}
617		});
693	–	try {
694	–	t.start();
695	–	t.join();
696	–	lock.readLock().unlock();
697	–	} catch(Exception e){
698	–	unexpectedException();
699	–	}
700	–	}
618
619	<
619	>	t.start();
620	>	t.join();
621	>	lock.readLock().unlock();
622	>	}
623	>
624	>
625
626		/**
627		* write tryLock fails when readlocked
628		*/
629	<	public void testWriteTryLockWhenReadLocked() {
629	>	public void testWriteTryLockWhenReadLocked() throws InterruptedException {
630		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
631		lock.readLock().lock();
632		Thread t = new Thread(new Runnable() {
#	Line 712 | Line 634 | public class ReentrantReadWriteLockTest
634		threadAssertFalse(lock.writeLock().tryLock());
635		}
636		});
637	<	try {
638	<	t.start();
639	<	t.join();
640	<	lock.readLock().unlock();
641	<	} catch(Exception e){
720	<	unexpectedException();
721	<	}
722	<	}
637	>
638	>	t.start();
639	>	t.join();
640	>	lock.readLock().unlock();
641	>	}
642
643
644		/**
645		* Fair Read tryLock succeeds if readlocked but not writelocked
646		*/
647	<	public void testTryLockWhenReadLockedFair() {
647	>	public void testTryLockWhenReadLockedFair() throws InterruptedException {
648		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
649		lock.readLock().lock();
650		Thread t = new Thread(new Runnable() {
#	Line 734 | Line 653 | public class ReentrantReadWriteLockTest
653		lock.readLock().unlock();
654		}
655		});
737	–	try {
738	–	t.start();
739	–	t.join();
740	–	lock.readLock().unlock();
741	–	} catch(Exception e){
742	–	unexpectedException();
743	–	}
744	–	}
656
657	<
657	>	t.start();
658	>	t.join();
659	>	lock.readLock().unlock();
660	>	}
661	>
662	>
663
664		/**
665		* Fair write tryLock fails when readlocked
666		*/
667	<	public void testWriteTryLockWhenReadLockedFair() {
667	>	public void testWriteTryLockWhenReadLockedFair() throws InterruptedException {
668		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock(true);
669		lock.readLock().lock();
670		Thread t = new Thread(new Runnable() {
#	Line 756 | Line 672 | public class ReentrantReadWriteLockTest
672		threadAssertFalse(lock.writeLock().tryLock());
673		}
674		});
759	–	try {
760	–	t.start();
761	–	t.join();
762	–	lock.readLock().unlock();
763	–	} catch(Exception e){
764	–	unexpectedException();
765	–	}
766	–	}
675
676	<
676	>	t.start();
677	>	t.join();
678	>	lock.readLock().unlock();
679	>	}
680	>
681	>
682
683		/**
684		* write timed tryLock times out if locked
685		*/
686	<	public void testWriteTryLock_Timeout() {
686	>	public void testWriteTryLock_Timeout() throws InterruptedException {
687		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
688		lock.writeLock().lock();
689	<	Thread t = new Thread(new Runnable() {
690	<	public void run() {
691	<	try {
692	<	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
693	<	} catch (Exception ex) {
694	<	threadUnexpectedException();
695	<	}
696	<	}
697	<	});
785	<	try {
786	<	t.start();
787	<	t.join();
788	<	lock.writeLock().unlock();
789	<	} catch(Exception e){
790	<	unexpectedException();
791	<	}
792	<	}
689	>	Thread t = new Thread(new CheckedRunnable() {
690	>	public void realRun() throws InterruptedException {
691	>	threadAssertFalse(lock.writeLock().tryLock(1, TimeUnit.MILLISECONDS));
692	>	}});
693	>
694	>	t.start();
695	>	t.join();
696	>	lock.writeLock().unlock();
697	>	}
698
699		/**
700		* read timed tryLock times out if write-locked
701		*/
702	<	public void testReadTryLock_Timeout() {
702	>	public void testReadTryLock_Timeout() throws InterruptedException {
703		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
704		lock.writeLock().lock();
705	<	Thread t = new Thread(new Runnable() {
706	<	public void run() {
707	<	try {
708	<	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
709	<	} catch (Exception ex) {
710	<	threadUnexpectedException();
711	<	}
712	<	}
713	<	});
809	<	try {
810	<	t.start();
811	<	t.join();
812	<	lock.writeLock().unlock();
813	<	} catch(Exception e){
814	<	unexpectedException();
815	<	}
816	<	}
705	>	Thread t = new Thread(new CheckedRunnable() {
706	>	public void realRun() throws InterruptedException {
707	>	threadAssertFalse(lock.readLock().tryLock(1, TimeUnit.MILLISECONDS));
708	>	}});
709	>
710	>	t.start();
711	>	t.join();
712	>	lock.writeLock().unlock();
713	>	}
714
715
716		/**
717		* write lockInterruptibly succeeds if lock free else is interruptible
718		*/
719	<	public void testWriteLockInterruptibly() {
719	>	public void testWriteLockInterruptibly() throws InterruptedException {
720		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
721	<	try {
722	<	lock.writeLock().lockInterruptibly();
723	<	} catch(Exception e) {
724	<	unexpectedException();
725	<	}
726	<	Thread t = new Thread(new Runnable() {
727	<	public void run() {
728	<	try {
729	<	lock.writeLock().lockInterruptibly();
730	<	threadShouldThrow();
731	<	}
732	<	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	<	}
721	>	lock.writeLock().lockInterruptibly();
722	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
723	>	public void realRun() throws InterruptedException {
724	>	lock.writeLock().lockInterruptibly();
725	>	}});
726	>
727	>	t.start();
728	>	Thread.sleep(SHORT_DELAY_MS);
729	>	t.interrupt();
730	>	Thread.sleep(SHORT_DELAY_MS);
731	>	t.join();
732	>	lock.writeLock().unlock();
733		}
734
735		/**
736		*  read lockInterruptibly succeeds if lock free else is interruptible
737		*/
738	<	public void testReadLockInterruptibly() {
738	>	public void testReadLockInterruptibly() throws InterruptedException {
739		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
740	<	try {
741	<	lock.writeLock().lockInterruptibly();
742	<	} catch(Exception e) {
743	<	unexpectedException();
744	<	}
745	<	Thread t = new Thread(new Runnable() {
746	<	public void run() {
747	<	try {
748	<	lock.readLock().lockInterruptibly();
749	<	threadShouldThrow();
750	<	}
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	<	}
740	>	lock.writeLock().lockInterruptibly();
741	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
742	>	public void realRun() throws InterruptedException {
743	>	lock.readLock().lockInterruptibly();
744	>	}});
745	>
746	>	t.start();
747	>	Thread.sleep(SHORT_DELAY_MS);
748	>	t.interrupt();
749	>	t.join();
750	>	lock.writeLock().unlock();
751		}
752
753		/**
754		* Calling await without holding lock throws IllegalMonitorStateException
755		*/
756	<	public void testAwait_IllegalMonitor() {
757	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
756	>	public void testAwait_IllegalMonitor() throws InterruptedException {
757	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
758		final Condition c = lock.writeLock().newCondition();
759		try {
760		c.await();
761		shouldThrow();
762	<	}
892	<	catch (IllegalMonitorStateException success) {
893	<	}
894	<	catch (Exception ex) {
895	<	shouldThrow();
896	<	}
762	>	} catch (IllegalMonitorStateException success) {}
763		}
764
765		/**
766		* Calling signal without holding lock throws IllegalMonitorStateException
767		*/
768		public void testSignal_IllegalMonitor() {
769	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
769	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
770		final Condition c = lock.writeLock().newCondition();
771		try {
772		c.signal();
773		shouldThrow();
774	<	}
909	<	catch (IllegalMonitorStateException success) {
910	<	}
911	<	catch (Exception ex) {
912	<	unexpectedException();
913	<	}
774	>	} catch (IllegalMonitorStateException success) {}
775		}
776
777		/**
778		* awaitNanos without a signal times out
779		*/
780	<	public void testAwaitNanos_Timeout() {
781	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
780	>	public void testAwaitNanos_Timeout() throws InterruptedException {
781	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
782		final Condition c = lock.writeLock().newCondition();
783	<	try {
784	<	lock.writeLock().lock();
785	<	long t = c.awaitNanos(100);
786	<	assertTrue(t <= 0);
787	<	lock.writeLock().unlock();
927	<	}
928	<	catch (Exception ex) {
929	<	unexpectedException();
930	<	}
783	>
784	>	lock.writeLock().lock();
785	>	long t = c.awaitNanos(100);
786	>	assertTrue(t <= 0);
787	>	lock.writeLock().unlock();
788		}
789
790
#	Line 935 | Line 792 | public class ReentrantReadWriteLockTest
792		*  timed await without a signal times out
793		*/
794		public void testAwait_Timeout() {
795	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
795	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
796		final Condition c = lock.writeLock().newCondition();
797	<	try {
798	<	lock.writeLock().lock();
942	<	lock.writeLock().unlock();
943	<	}
944	<	catch (Exception ex) {
945	<	unexpectedException();
946	<	}
797	>	lock.writeLock().lock();
798	>	lock.writeLock().unlock();
799		}
800
801		/**
802		* awaitUntil without a signal times out
803		*/
804		public void testAwaitUntil_Timeout() {
805	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
805	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
806		final Condition c = lock.writeLock().newCondition();
807	<	try {
808	<	lock.writeLock().lock();
809	<	java.util.Date d = new java.util.Date();
958	<	lock.writeLock().unlock();
959	<	}
960	<	catch (Exception ex) {
961	<	unexpectedException();
962	<	}
807	>	lock.writeLock().lock();
808	>	java.util.Date d = new java.util.Date();
809	>	lock.writeLock().unlock();
810		}
811
812		/**
813		* await returns when signalled
814		*/
815	<	public void testAwait() {
816	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
815	>	public void testAwait() throws InterruptedException {
816	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
817		final Condition c = lock.writeLock().newCondition();
818	<	Thread t = new Thread(new Runnable() {
819	<	public void run() {
820	<	try {
821	<	lock.writeLock().lock();
822	<	c.await();
823	<	lock.writeLock().unlock();
977	<	}
978	<	catch(InterruptedException e) {
979	<	threadUnexpectedException();
980	<	}
981	<	}
982	<	});
818	>	Thread t = new Thread(new CheckedRunnable() {
819	>	public void realRun() throws InterruptedException {
820	>	lock.writeLock().lock();
821	>	c.await();
822	>	lock.writeLock().unlock();
823	>	}});
824
825	<	try {
826	<	t.start();
827	<	Thread.sleep(SHORT_DELAY_MS);
828	<	lock.writeLock().lock();
829	<	c.signal();
830	<	lock.writeLock().unlock();
831	<	t.join(SHORT_DELAY_MS);
991	<	assertFalse(t.isAlive());
992	<	}
993	<	catch (Exception ex) {
994	<	unexpectedException();
995	<	}
825	>	t.start();
826	>	Thread.sleep(SHORT_DELAY_MS);
827	>	lock.writeLock().lock();
828	>	c.signal();
829	>	lock.writeLock().unlock();
830	>	t.join(SHORT_DELAY_MS);
831	>	assertFalse(t.isAlive());
832		}
833
834		/** A helper class for uninterruptible wait tests */
835		class UninterruptableThread extends Thread {
836		private Lock lock;
837		private Condition c;
838	<
838	>
839		public volatile boolean canAwake = false;
840		public volatile boolean interrupted = false;
841		public volatile boolean lockStarted = false;
842	<
842	>
843		public UninterruptableThread(Lock lock, Condition c) {
844		this.lock = lock;
845		this.c = c;
846		}
847	<
847	>
848		public synchronized void run() {
849		lock.lock();
850		lockStarted = true;
851	<
851	>
852		while (!canAwake) {
853		c.awaitUninterruptibly();
854		}
855	<
855	>
856		interrupted = isInterrupted();
857		lock.unlock();
858		}
#	Line 1025 | Line 861 | public class ReentrantReadWriteLockTest
861		/**
862		* awaitUninterruptibly doesn't abort on interrupt
863		*/
864	<	public void testAwaitUninterruptibly() {
864	>	public void testAwaitUninterruptibly() throws InterruptedException {
865		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
866		final Condition c = lock.writeLock().newCondition();
867		UninterruptableThread thread = new UninterruptableThread(lock.writeLock(), c);
868
869	<	try {
1034	<	thread.start();
1035	<
1036	<	while (!thread.lockStarted) {
1037	<	Thread.sleep(100);
1038	<	}
869	>	thread.start();
870
871	<	lock.writeLock().lock();
872	<	try {
873	<	thread.interrupt();
1043	<	thread.canAwake = true;
1044	<	c.signal();
1045	<	} finally {
1046	<	lock.writeLock().unlock();
1047	<	}
871	>	while (!thread.lockStarted) {
872	>	Thread.sleep(100);
873	>	}
874
875	<	thread.join();
876	<	assertTrue(thread.interrupted);
877	<	assertFalse(thread.isAlive());
878	<	} catch (Exception ex) {
879	<	unexpectedException();
875	>	lock.writeLock().lock();
876	>	try {
877	>	thread.interrupt();
878	>	thread.canAwake = true;
879	>	c.signal();
880	>	} finally {
881	>	lock.writeLock().unlock();
882		}
883	+
884	+	thread.join();
885	+	assertTrue(thread.interrupted);
886	+	assertFalse(thread.isAlive());
887		}
888
889		/**
890		* await is interruptible
891		*/
892	<	public void testAwait_Interrupt() {
893	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
892	>	public void testAwait_Interrupt() throws InterruptedException {
893	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
894		final Condition c = lock.writeLock().newCondition();
895	<	Thread t = new Thread(new Runnable() {
896	<	public void run() {
897	<	try {
898	<	lock.writeLock().lock();
899	<	c.await();
900	<	lock.writeLock().unlock();
1069	<	threadShouldThrow();
1070	<	}
1071	<	catch(InterruptedException success) {
1072	<	}
1073	<	}
1074	<	});
895	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
896	>	public void realRun() throws InterruptedException {
897	>	lock.writeLock().lock();
898	>	c.await();
899	>	lock.writeLock().unlock();
900	>	}});
901
902	<	try {
903	<	t.start();
904	<	Thread.sleep(SHORT_DELAY_MS);
905	<	t.interrupt();
906	<	t.join(SHORT_DELAY_MS);
1081	<	assertFalse(t.isAlive());
1082	<	}
1083	<	catch (Exception ex) {
1084	<	unexpectedException();
1085	<	}
902	>	t.start();
903	>	Thread.sleep(SHORT_DELAY_MS);
904	>	t.interrupt();
905	>	t.join(SHORT_DELAY_MS);
906	>	assertFalse(t.isAlive());
907		}
908
909		/**
910		* awaitNanos is interruptible
911		*/
912	<	public void testAwaitNanos_Interrupt() {
913	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
912	>	public void testAwaitNanos_Interrupt() throws InterruptedException {
913	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
914		final Condition c = lock.writeLock().newCondition();
915	<	Thread t = new Thread(new Runnable() {
916	<	public void run() {
917	<	try {
918	<	lock.writeLock().lock();
919	<	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
920	<	lock.writeLock().unlock();
1100	<	threadShouldThrow();
1101	<	}
1102	<	catch(InterruptedException success) {
1103	<	}
1104	<	}
1105	<	});
915	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
916	>	public void realRun() throws InterruptedException {
917	>	lock.writeLock().lock();
918	>	c.awaitNanos(SHORT_DELAY_MS * 2 * 1000000);
919	>	lock.writeLock().unlock();
920	>	}});
921
922	<	try {
923	<	t.start();
924	<	Thread.sleep(SHORT_DELAY_MS);
925	<	t.interrupt();
926	<	t.join(SHORT_DELAY_MS);
1112	<	assertFalse(t.isAlive());
1113	<	}
1114	<	catch (Exception ex) {
1115	<	unexpectedException();
1116	<	}
922	>	t.start();
923	>	Thread.sleep(SHORT_DELAY_MS);
924	>	t.interrupt();
925	>	t.join(SHORT_DELAY_MS);
926	>	assertFalse(t.isAlive());
927		}
928
929		/**
930		* awaitUntil is interruptible
931		*/
932	<	public void testAwaitUntil_Interrupt() {
933	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
932	>	public void testAwaitUntil_Interrupt() throws InterruptedException {
933	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
934		final Condition c = lock.writeLock().newCondition();
935	<	Thread t = new Thread(new Runnable() {
936	<	public void run() {
937	<	try {
938	<	lock.writeLock().lock();
939	<	java.util.Date d = new java.util.Date();
940	<	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
941	<	lock.writeLock().unlock();
1132	<	threadShouldThrow();
1133	<	}
1134	<	catch(InterruptedException success) {
1135	<	}
1136	<	}
1137	<	});
935	>	Thread t = new Thread(new CheckedInterruptedRunnable() {
936	>	public void realRun() throws InterruptedException {
937	>	lock.writeLock().lock();
938	>	java.util.Date d = new java.util.Date();
939	>	c.awaitUntil(new java.util.Date(d.getTime() + 10000));
940	>	lock.writeLock().unlock();
941	>	}});
942
943	<	try {
944	<	t.start();
945	<	Thread.sleep(SHORT_DELAY_MS);
946	<	t.interrupt();
947	<	t.join(SHORT_DELAY_MS);
1144	<	assertFalse(t.isAlive());
1145	<	}
1146	<	catch (Exception ex) {
1147	<	unexpectedException();
1148	<	}
943	>	t.start();
944	>	Thread.sleep(SHORT_DELAY_MS);
945	>	t.interrupt();
946	>	t.join(SHORT_DELAY_MS);
947	>	assertFalse(t.isAlive());
948		}
949
950		/**
951		* signalAll wakes up all threads
952		*/
953	<	public void testSignalAll() {
954	<	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
953	>	public void testSignalAll() throws InterruptedException {
954	>	final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
955		final Condition c = lock.writeLock().newCondition();
956	<	Thread t1 = new Thread(new Runnable() {
957	<	public void run() {
958	<	try {
959	<	lock.writeLock().lock();
960	<	c.await();
961	<	lock.writeLock().unlock();
1163	<	}
1164	<	catch(InterruptedException e) {
1165	<	threadUnexpectedException();
1166	<	}
1167	<	}
1168	<	});
956	>	Thread t1 = new Thread(new CheckedRunnable() {
957	>	public void realRun() throws InterruptedException {
958	>	lock.writeLock().lock();
959	>	c.await();
960	>	lock.writeLock().unlock();
961	>	}});
962
963	<	Thread t2 = new Thread(new Runnable() {
964	<	public void run() {
965	<	try {
966	<	lock.writeLock().lock();
967	<	c.await();
968	<	lock.writeLock().unlock();
1176	<	}
1177	<	catch(InterruptedException e) {
1178	<	threadUnexpectedException();
1179	<	}
1180	<	}
1181	<	});
963	>	Thread t2 = new Thread(new CheckedRunnable() {
964	>	public void realRun() throws InterruptedException {
965	>	lock.writeLock().lock();
966	>	c.await();
967	>	lock.writeLock().unlock();
968	>	}});
969
970	<	try {
971	<	t1.start();
972	<	t2.start();
973	<	Thread.sleep(SHORT_DELAY_MS);
974	<	lock.writeLock().lock();
975	<	c.signalAll();
976	<	lock.writeLock().unlock();
977	<	t1.join(SHORT_DELAY_MS);
978	<	t2.join(SHORT_DELAY_MS);
979	<	assertFalse(t1.isAlive());
1193	<	assertFalse(t2.isAlive());
1194	<	}
1195	<	catch (Exception ex) {
1196	<	unexpectedException();
1197	<	}
970	>	t1.start();
971	>	t2.start();
972	>	Thread.sleep(SHORT_DELAY_MS);
973	>	lock.writeLock().lock();
974	>	c.signalAll();
975	>	lock.writeLock().unlock();
976	>	t1.join(SHORT_DELAY_MS);
977	>	t2.join(SHORT_DELAY_MS);
978	>	assertFalse(t1.isAlive());
979	>	assertFalse(t2.isAlive());
980		}
981
982		/**
983		* A serialized lock deserializes as unlocked
984		*/
985	<	public void testSerialization() {
985	>	public void testSerialization() throws Exception {
986		ReentrantReadWriteLock l = new ReentrantReadWriteLock();
987		l.readLock().lock();
988		l.readLock().unlock();
989
990	<	try {
991	<	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
992	<	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
993	<	out.writeObject(l);
994	<	out.close();
995	<
996	<	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
997	<	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
998	<	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
999	<	r.readLock().lock();
1218	<	r.readLock().unlock();
1219	<	} catch(Exception e){
1220	<	e.printStackTrace();
1221	<	unexpectedException();
1222	<	}
990	>	ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
991	>	ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
992	>	out.writeObject(l);
993	>	out.close();
994	>
995	>	ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
996	>	ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
997	>	ReentrantReadWriteLock r = (ReentrantReadWriteLock) in.readObject();
998	>	r.readLock().lock();
999	>	r.readLock().unlock();
1000		}
1001
1002		/**
1003		* hasQueuedThreads reports whether there are waiting threads
1004		*/
1005	<	public void testhasQueuedThreads() {
1005	>	public void testhasQueuedThreads() throws InterruptedException {
1006		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1007		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1008		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1009	<	try {
1010	<	assertFalse(lock.hasQueuedThreads());
1011	<	lock.writeLock().lock();
1012	<	t1.start();
1013	<	Thread.sleep(SHORT_DELAY_MS);
1014	<	assertTrue(lock.hasQueuedThreads());
1015	<	t2.start();
1016	<	Thread.sleep(SHORT_DELAY_MS);
1017	<	assertTrue(lock.hasQueuedThreads());
1018	<	t1.interrupt();
1019	<	Thread.sleep(SHORT_DELAY_MS);
1020	<	assertTrue(lock.hasQueuedThreads());
1021	<	lock.writeLock().unlock();
1022	<	Thread.sleep(SHORT_DELAY_MS);
1023	<	assertFalse(lock.hasQueuedThreads());
1024	<	t1.join();
1025	<	t2.join();
1249	<	} catch(Exception e){
1250	<	unexpectedException();
1251	<	}
1252	<	}
1009	>	assertFalse(lock.hasQueuedThreads());
1010	>	lock.writeLock().lock();
1011	>	t1.start();
1012	>	Thread.sleep(SHORT_DELAY_MS);
1013	>	assertTrue(lock.hasQueuedThreads());
1014	>	t2.start();
1015	>	Thread.sleep(SHORT_DELAY_MS);
1016	>	assertTrue(lock.hasQueuedThreads());
1017	>	t1.interrupt();
1018	>	Thread.sleep(SHORT_DELAY_MS);
1019	>	assertTrue(lock.hasQueuedThreads());
1020	>	lock.writeLock().unlock();
1021	>	Thread.sleep(SHORT_DELAY_MS);
1022	>	assertFalse(lock.hasQueuedThreads());
1023	>	t1.join();
1024	>	t2.join();
1025	>	}
1026
1027		/**
1028		* hasQueuedThread(null) throws NPE
1029		*/
1030	<	public void testHasQueuedThreadNPE() {
1030	>	public void testHasQueuedThreadNPE() {
1031		final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1032		try {
1033		sync.hasQueuedThread(null);
1034		shouldThrow();
1035	<	} catch (NullPointerException success) {
1263	<	}
1035	>	} catch (NullPointerException success) {}
1036		}
1037
1038		/**
1039		* hasQueuedThread reports whether a thread is queued.
1040		*/
1041	<	public void testHasQueuedThread() {
1041	>	public void testHasQueuedThread() throws InterruptedException {
1042		final ReentrantReadWriteLock sync = new ReentrantReadWriteLock();
1043		Thread t1 = new Thread(new InterruptedLockRunnable(sync));
1044		Thread t2 = new Thread(new InterruptibleLockRunnable(sync));
1045	<	try {
1046	<	assertFalse(sync.hasQueuedThread(t1));
1047	<	assertFalse(sync.hasQueuedThread(t2));
1048	<	sync.writeLock().lock();
1049	<	t1.start();
1050	<	Thread.sleep(SHORT_DELAY_MS);
1051	<	assertTrue(sync.hasQueuedThread(t1));
1052	<	t2.start();
1053	<	Thread.sleep(SHORT_DELAY_MS);
1054	<	assertTrue(sync.hasQueuedThread(t1));
1055	<	assertTrue(sync.hasQueuedThread(t2));
1056	<	t1.interrupt();
1057	<	Thread.sleep(SHORT_DELAY_MS);
1058	<	assertFalse(sync.hasQueuedThread(t1));
1059	<	assertTrue(sync.hasQueuedThread(t2));
1060	<	sync.writeLock().unlock();
1061	<	Thread.sleep(SHORT_DELAY_MS);
1062	<	assertFalse(sync.hasQueuedThread(t1));
1063	<	Thread.sleep(SHORT_DELAY_MS);
1064	<	assertFalse(sync.hasQueuedThread(t2));
1065	<	t1.join();
1066	<	t2.join();
1295	<	} catch(Exception e){
1296	<	unexpectedException();
1297	<	}
1298	<	}
1045	>	assertFalse(sync.hasQueuedThread(t1));
1046	>	assertFalse(sync.hasQueuedThread(t2));
1047	>	sync.writeLock().lock();
1048	>	t1.start();
1049	>	Thread.sleep(SHORT_DELAY_MS);
1050	>	assertTrue(sync.hasQueuedThread(t1));
1051	>	t2.start();
1052	>	Thread.sleep(SHORT_DELAY_MS);
1053	>	assertTrue(sync.hasQueuedThread(t1));
1054	>	assertTrue(sync.hasQueuedThread(t2));
1055	>	t1.interrupt();
1056	>	Thread.sleep(SHORT_DELAY_MS);
1057	>	assertFalse(sync.hasQueuedThread(t1));
1058	>	assertTrue(sync.hasQueuedThread(t2));
1059	>	sync.writeLock().unlock();
1060	>	Thread.sleep(SHORT_DELAY_MS);
1061	>	assertFalse(sync.hasQueuedThread(t1));
1062	>	Thread.sleep(SHORT_DELAY_MS);
1063	>	assertFalse(sync.hasQueuedThread(t2));
1064	>	t1.join();
1065	>	t2.join();
1066	>	}
1067
1068
1069		/**
1070		* getQueueLength reports number of waiting threads
1071		*/
1072	<	public void testGetQueueLength() {
1072	>	public void testGetQueueLength() throws InterruptedException {
1073		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1074		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1075		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1076	<	try {
1077	<	assertEquals(0, lock.getQueueLength());
1078	<	lock.writeLock().lock();
1079	<	t1.start();
1080	<	Thread.sleep(SHORT_DELAY_MS);
1081	<	assertEquals(1, lock.getQueueLength());
1082	<	t2.start();
1083	<	Thread.sleep(SHORT_DELAY_MS);
1084	<	assertEquals(2, lock.getQueueLength());
1085	<	t1.interrupt();
1086	<	Thread.sleep(SHORT_DELAY_MS);
1087	<	assertEquals(1, lock.getQueueLength());
1088	<	lock.writeLock().unlock();
1089	<	Thread.sleep(SHORT_DELAY_MS);
1090	<	assertEquals(0, lock.getQueueLength());
1091	<	t1.join();
1092	<	t2.join();
1325	<	} catch(Exception e){
1326	<	unexpectedException();
1327	<	}
1328	<	}
1076	>	assertEquals(0, lock.getQueueLength());
1077	>	lock.writeLock().lock();
1078	>	t1.start();
1079	>	Thread.sleep(SHORT_DELAY_MS);
1080	>	assertEquals(1, lock.getQueueLength());
1081	>	t2.start();
1082	>	Thread.sleep(SHORT_DELAY_MS);
1083	>	assertEquals(2, lock.getQueueLength());
1084	>	t1.interrupt();
1085	>	Thread.sleep(SHORT_DELAY_MS);
1086	>	assertEquals(1, lock.getQueueLength());
1087	>	lock.writeLock().unlock();
1088	>	Thread.sleep(SHORT_DELAY_MS);
1089	>	assertEquals(0, lock.getQueueLength());
1090	>	t1.join();
1091	>	t2.join();
1092	>	}
1093
1094		/**
1095		* getQueuedThreads includes waiting threads
1096		*/
1097	<	public void testGetQueuedThreads() {
1097	>	public void testGetQueuedThreads() throws InterruptedException {
1098		final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1099		Thread t1 = new Thread(new InterruptedLockRunnable(lock));
1100		Thread t2 = new Thread(new InterruptibleLockRunnable(lock));
1101	<	try {
1102	<	assertTrue(lock.getQueuedThreads().isEmpty());
1103	<	lock.writeLock().lock();
1104	<	assertTrue(lock.getQueuedThreads().isEmpty());
1105	<	t1.start();
1106	<	Thread.sleep(SHORT_DELAY_MS);
1107	<	assertTrue(lock.getQueuedThreads().contains(t1));
1108	<	t2.start();
1109	<	Thread.sleep(SHORT_DELAY_MS);
1110	<	assertTrue(lock.getQueuedThreads().contains(t1));
1111	<	assertTrue(lock.getQueuedThreads().contains(t2));
1112	<	t1.interrupt();
1113	<	Thread.sleep(SHORT_DELAY_MS);
1114	<	assertFalse(lock.getQueuedThreads().contains(t1));
1115	<	assertTrue(lock.getQueuedThreads().contains(t2));
1116	<	lock.writeLock().unlock();
1117	<	Thread.sleep(SHORT_DELAY_MS);
1118	<	assertTrue(lock.getQueuedThreads().isEmpty());
1119	<	t1.join();
1120	<	t2.join();
1357	<	} catch(Exception e){
1358	<	unexpectedException();
1359	<	}
1360	<	}
1101	>	assertTrue(lock.getQueuedThreads().isEmpty());
1102	>	lock.writeLock().lock();
1103	>	assertTrue(lock.getQueuedThreads().isEmpty());
1104	>	t1.start();
1105	>	Thread.sleep(SHORT_DELAY_MS);
1106	>	assertTrue(lock.getQueuedThreads().contains(t1));
1107	>	t2.start();
1108	>	Thread.sleep(SHORT_DELAY_MS);
1109	>	assertTrue(lock.getQueuedThreads().contains(t1));
1110	>	assertTrue(lock.getQueuedThreads().contains(t2));
1111	>	t1.interrupt();
1112	>	Thread.sleep(SHORT_DELAY_MS);
1113	>	assertFalse(lock.getQueuedThreads().contains(t1));
1114	>	assertTrue(lock.getQueuedThreads().contains(t2));
1115	>	lock.writeLock().unlock();
1116	>	Thread.sleep(SHORT_DELAY_MS);
1117	>	assertTrue(lock.getQueuedThreads().isEmpty());
1118	>	t1.join();
1119	>	t2.join();
1120	>	}
1121
1122		/**
1123		* hasWaiters throws NPE if null
#	Line 1367 | Line 1127 | public class ReentrantReadWriteLockTest
1127		try {
1128		lock.hasWaiters(null);
1129		shouldThrow();
1130	<	} catch (NullPointerException success) {
1371	<	} catch (Exception ex) {
1372	<	unexpectedException();
1373	<	}
1130	>	} catch (NullPointerException success) {}
1131		}
1132
1133		/**
#	Line 1381 | Line 1138 | public class ReentrantReadWriteLockTest
1138		try {
1139		lock.getWaitQueueLength(null);
1140		shouldThrow();
1141	<	} catch (NullPointerException success) {
1385	<	} catch (Exception ex) {
1386	<	unexpectedException();
1387	<	}
1141	>	} catch (NullPointerException success) {}
1142		}
1143
1144
#	Line 1396 | Line 1150 | public class ReentrantReadWriteLockTest
1150		try {
1151		lock.getWaitingThreads(null);
1152		shouldThrow();
1153	<	} catch (NullPointerException success) {
1400	<	} catch (Exception ex) {
1401	<	unexpectedException();
1402	<	}
1153	>	} catch (NullPointerException success) {}
1154		}
1155
1156		/**
#	Line 1407 | Line 1158 | public class ReentrantReadWriteLockTest
1158		*/
1159		public void testHasWaitersIAE() {
1160		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1161	<	final Condition c = (lock.writeLock().newCondition());
1161	>	final Condition c = lock.writeLock().newCondition();
1162		final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1163		try {
1164		lock2.hasWaiters(c);
1165		shouldThrow();
1166	<	} catch (IllegalArgumentException success) {
1416	<	} catch (Exception ex) {
1417	<	unexpectedException();
1418	<	}
1166	>	} catch (IllegalArgumentException success) {}
1167		}
1168
1169		/**
#	Line 1423 | Line 1171 | public class ReentrantReadWriteLockTest
1171		*/
1172		public void testHasWaitersIMSE() {
1173		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1174	<	final Condition c = (lock.writeLock().newCondition());
1174	>	final Condition c = lock.writeLock().newCondition();
1175		try {
1176		lock.hasWaiters(c);
1177		shouldThrow();
1178	<	} catch (IllegalMonitorStateException success) {
1431	<	} catch (Exception ex) {
1432	<	unexpectedException();
1433	<	}
1178	>	} catch (IllegalMonitorStateException success) {}
1179		}
1180
1181
#	Line 1439 | Line 1184 | public class ReentrantReadWriteLockTest
1184		*/
1185		public void testGetWaitQueueLengthIAE() {
1186		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1187	<	final Condition c = (lock.writeLock().newCondition());
1187	>	final Condition c = lock.writeLock().newCondition();
1188		final ReentrantReadWriteLock lock2 = new ReentrantReadWriteLock();
1189		try {
1190		lock2.getWaitQueueLength(c);
1191		shouldThrow();
1192	<	} catch (IllegalArgumentException success) {
1448	<	} catch (Exception ex) {
1449	<	unexpectedException();
1450	<	}
1192	>	} catch (IllegalArgumentException success) {}
1193		}
1194
1195		/**
#	Line 1455 | Line 1197 | public class ReentrantReadWriteLockTest
1197		*/
1198		public void testGetWaitQueueLengthIMSE() {
1199		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1200	<	final Condition c = (lock.writeLock().newCondition());
1200	>	final Condition c = lock.writeLock().newCondition();
1201		try {
1202		lock.getWaitQueueLength(c);
1203		shouldThrow();
1204	<	} catch (IllegalMonitorStateException success) {
1463	<	} catch (Exception ex) {
1464	<	unexpectedException();
1465	<	}
1204	>	} catch (IllegalMonitorStateException success) {}
1205		}
1206
1207
#	Line 1470 | Line 1209 | public class ReentrantReadWriteLockTest
1209		* getWaitingThreads throws IAE if not owned
1210		*/
1211		public void testGetWaitingThreadsIAE() {
1212	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1213	<	final Condition c = (lock.writeLock().newCondition());
1214	<	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1212	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1213	>	final Condition c = lock.writeLock().newCondition();
1214	>	final PublicReentrantReadWriteLock lock2 = new PublicReentrantReadWriteLock();
1215		try {
1216		lock2.getWaitingThreads(c);
1217		shouldThrow();
1218	<	} catch (IllegalArgumentException success) {
1480	<	} catch (Exception ex) {
1481	<	unexpectedException();
1482	<	}
1218	>	} catch (IllegalArgumentException success) {}
1219		}
1220
1221		/**
1222		* getWaitingThreads throws IMSE if not locked
1223		*/
1224		public void testGetWaitingThreadsIMSE() {
1225	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1226	<	final Condition c = (lock.writeLock().newCondition());
1225	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1226	>	final Condition c = lock.writeLock().newCondition();
1227		try {
1228		lock.getWaitingThreads(c);
1229		shouldThrow();
1230	<	} catch (IllegalMonitorStateException success) {
1495	<	} catch (Exception ex) {
1496	<	unexpectedException();
1497	<	}
1230	>	} catch (IllegalMonitorStateException success) {}
1231		}
1232
1233
1234		/**
1235		* hasWaiters returns true when a thread is waiting, else false
1236		*/
1237	<	public void testHasWaiters() {
1237	>	public void testHasWaiters() throws InterruptedException {
1238		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1239	<	final Condition c = (lock.writeLock().newCondition());
1240	<	Thread t = new Thread(new Runnable() {
1241	<	public void run() {
1242	<	try {
1243	<	lock.writeLock().lock();
1244	<	threadAssertFalse(lock.hasWaiters(c));
1245	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1246	<	c.await();
1247	<	lock.writeLock().unlock();
1515	<	}
1516	<	catch(InterruptedException e) {
1517	<	threadUnexpectedException();
1518	<	}
1519	<	}
1520	<	});
1239	>	final Condition c = lock.writeLock().newCondition();
1240	>	Thread t = new Thread(new CheckedRunnable() {
1241	>	public void realRun() throws InterruptedException {
1242	>	lock.writeLock().lock();
1243	>	threadAssertFalse(lock.hasWaiters(c));
1244	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
1245	>	c.await();
1246	>	lock.writeLock().unlock();
1247	>	}});
1248
1249	<	try {
1250	<	t.start();
1251	<	Thread.sleep(SHORT_DELAY_MS);
1252	<	lock.writeLock().lock();
1253	<	assertTrue(lock.hasWaiters(c));
1254	<	assertEquals(1, lock.getWaitQueueLength(c));
1255	<	c.signal();
1256	<	lock.writeLock().unlock();
1257	<	Thread.sleep(SHORT_DELAY_MS);
1258	<	lock.writeLock().lock();
1259	<	assertFalse(lock.hasWaiters(c));
1260	<	assertEquals(0, lock.getWaitQueueLength(c));
1261	<	lock.writeLock().unlock();
1262	<	t.join(SHORT_DELAY_MS);
1536	<	assertFalse(t.isAlive());
1537	<	}
1538	<	catch (Exception ex) {
1539	<	unexpectedException();
1540	<	}
1249	>	t.start();
1250	>	Thread.sleep(SHORT_DELAY_MS);
1251	>	lock.writeLock().lock();
1252	>	assertTrue(lock.hasWaiters(c));
1253	>	assertEquals(1, lock.getWaitQueueLength(c));
1254	>	c.signal();
1255	>	lock.writeLock().unlock();
1256	>	Thread.sleep(SHORT_DELAY_MS);
1257	>	lock.writeLock().lock();
1258	>	assertFalse(lock.hasWaiters(c));
1259	>	assertEquals(0, lock.getWaitQueueLength(c));
1260	>	lock.writeLock().unlock();
1261	>	t.join(SHORT_DELAY_MS);
1262	>	assertFalse(t.isAlive());
1263		}
1264
1265		/**
1266		* getWaitQueueLength returns number of waiting threads
1267		*/
1268	<	public void testGetWaitQueueLength() {
1268	>	public void testGetWaitQueueLength() throws InterruptedException {
1269		final ReentrantReadWriteLock lock = new ReentrantReadWriteLock();
1270	<	final Condition c = (lock.writeLock().newCondition());
1271	<	Thread t = new Thread(new Runnable() {
1272	<	public void run() {
1273	<	try {
1274	<	lock.writeLock().lock();
1275	<	threadAssertFalse(lock.hasWaiters(c));
1276	<	threadAssertEquals(0, lock.getWaitQueueLength(c));
1277	<	c.await();
1278	<	lock.writeLock().unlock();
1557	<	}
1558	<	catch(InterruptedException e) {
1559	<	threadUnexpectedException();
1560	<	}
1561	<	}
1562	<	});
1270	>	final Condition c = lock.writeLock().newCondition();
1271	>	Thread t = new Thread(new CheckedRunnable() {
1272	>	public void realRun() throws InterruptedException {
1273	>	lock.writeLock().lock();
1274	>	threadAssertFalse(lock.hasWaiters(c));
1275	>	threadAssertEquals(0, lock.getWaitQueueLength(c));
1276	>	c.await();
1277	>	lock.writeLock().unlock();
1278	>	}});
1279
1280	<	try {
1281	<	t.start();
1282	<	Thread.sleep(SHORT_DELAY_MS);
1283	<	lock.writeLock().lock();
1284	<	assertTrue(lock.hasWaiters(c));
1285	<	assertEquals(1, lock.getWaitQueueLength(c));
1286	<	c.signal();
1287	<	lock.writeLock().unlock();
1288	<	Thread.sleep(SHORT_DELAY_MS);
1289	<	lock.writeLock().lock();
1290	<	assertFalse(lock.hasWaiters(c));
1291	<	assertEquals(0, lock.getWaitQueueLength(c));
1292	<	lock.writeLock().unlock();
1293	<	t.join(SHORT_DELAY_MS);
1578	<	assertFalse(t.isAlive());
1579	<	}
1580	<	catch (Exception ex) {
1581	<	unexpectedException();
1582	<	}
1280	>	t.start();
1281	>	Thread.sleep(SHORT_DELAY_MS);
1282	>	lock.writeLock().lock();
1283	>	assertTrue(lock.hasWaiters(c));
1284	>	assertEquals(1, lock.getWaitQueueLength(c));
1285	>	c.signal();
1286	>	lock.writeLock().unlock();
1287	>	Thread.sleep(SHORT_DELAY_MS);
1288	>	lock.writeLock().lock();
1289	>	assertFalse(lock.hasWaiters(c));
1290	>	assertEquals(0, lock.getWaitQueueLength(c));
1291	>	lock.writeLock().unlock();
1292	>	t.join(SHORT_DELAY_MS);
1293	>	assertFalse(t.isAlive());
1294		}
1295
1296
1297		/**
1298		* getWaitingThreads returns only and all waiting threads
1299		*/
1300	<	public void testGetWaitingThreads() {
1301	<	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1300	>	public void testGetWaitingThreads() throws InterruptedException {
1301	>	final PublicReentrantReadWriteLock lock = new PublicReentrantReadWriteLock();
1302		final Condition c = lock.writeLock().newCondition();
1303	<	Thread t1 = new Thread(new Runnable() {
1304	<	public void run() {
1305	<	try {
1306	<	lock.writeLock().lock();
1307	<	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1308	<	c.await();
1309	<	lock.writeLock().unlock();
1599	<	}
1600	<	catch(InterruptedException e) {
1601	<	threadUnexpectedException();
1602	<	}
1603	<	}
1604	<	});
1303	>	Thread t1 = new Thread(new CheckedRunnable() {
1304	>	public void realRun() throws InterruptedException {
1305	>	lock.writeLock().lock();
1306	>	threadAssertTrue(lock.getWaitingThreads(c).isEmpty());
1307	>	c.await();
1308	>	lock.writeLock().unlock();
1309	>	}});
1310
1311	<	Thread t2 = new Thread(new Runnable() {
1312	<	public void run() {
1313	<	try {
1314	<	lock.writeLock().lock();
1315	<	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1316	<	c.await();
1317	<	lock.writeLock().unlock();
1613	<	}
1614	<	catch(InterruptedException e) {
1615	<	threadUnexpectedException();
1616	<	}
1617	<	}
1618	<	});
1311	>	Thread t2 = new Thread(new CheckedRunnable() {
1312	>	public void realRun() throws InterruptedException {
1313	>	lock.writeLock().lock();
1314	>	threadAssertFalse(lock.getWaitingThreads(c).isEmpty());
1315	>	c.await();
1316	>	lock.writeLock().unlock();
1317	>	}});
1318
1319	<	try {
1320	<	lock.writeLock().lock();
1321	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1322	<	lock.writeLock().unlock();
1323	<	t1.start();
1324	<	Thread.sleep(SHORT_DELAY_MS);
1325	<	t2.start();
1326	<	Thread.sleep(SHORT_DELAY_MS);
1327	<	lock.writeLock().lock();
1328	<	assertTrue(lock.hasWaiters(c));
1329	<	assertTrue(lock.getWaitingThreads(c).contains(t1));
1330	<	assertTrue(lock.getWaitingThreads(c).contains(t2));
1331	<	c.signalAll();
1332	<	lock.writeLock().unlock();
1333	<	Thread.sleep(SHORT_DELAY_MS);
1334	<	lock.writeLock().lock();
1335	<	assertFalse(lock.hasWaiters(c));
1336	<	assertTrue(lock.getWaitingThreads(c).isEmpty());
1337	<	lock.writeLock().unlock();
1338	<	t1.join(SHORT_DELAY_MS);
1339	<	t2.join(SHORT_DELAY_MS);
1340	<	assertFalse(t1.isAlive());
1642	<	assertFalse(t2.isAlive());
1643	<	}
1644	<	catch (Exception ex) {
1645	<	unexpectedException();
1646	<	}
1319	>	lock.writeLock().lock();
1320	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1321	>	lock.writeLock().unlock();
1322	>	t1.start();
1323	>	Thread.sleep(SHORT_DELAY_MS);
1324	>	t2.start();
1325	>	Thread.sleep(SHORT_DELAY_MS);
1326	>	lock.writeLock().lock();
1327	>	assertTrue(lock.hasWaiters(c));
1328	>	assertTrue(lock.getWaitingThreads(c).contains(t1));
1329	>	assertTrue(lock.getWaitingThreads(c).contains(t2));
1330	>	c.signalAll();
1331	>	lock.writeLock().unlock();
1332	>	Thread.sleep(SHORT_DELAY_MS);
1333	>	lock.writeLock().lock();
1334	>	assertFalse(lock.hasWaiters(c));
1335	>	assertTrue(lock.getWaitingThreads(c).isEmpty());
1336	>	lock.writeLock().unlock();
1337	>	t1.join(SHORT_DELAY_MS);
1338	>	t2.join(SHORT_DELAY_MS);
1339	>	assertFalse(t1.isAlive());
1340	>	assertFalse(t2.isAlive());
1341		}
1342
1343		/**

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